zhejiang jida metal co,ltd Cases

Abstract The utility model discloses a hand-tightening screw, which comprises a screw head and a screw rod. The utility model is characterized in that: a fixing hole is arranged on the screw head, a hanging plate is matched in the fixing hole, and a connecting section is integrally arranged on one side of the hanging plate, and the connecting section is in the fixing hole. The hand screw can be easily tightened by hand.   Description hand screw technical field [0001] The utility model relates to screws, in particular to a hand screw. Background technique [0002] A hand screw is a type of screw that can realize the normal disassembly and assembly of the screw without tools, and is generally used in places that require rapid disassembly and assembly. At present, the Chinese patent of publication number CN204175749U discloses a kind of captive screw that can be disassembled and assembled quickly, and it comprises a press-fit screw sleeve, a screw, a spring and a hand-twisted lifting ring; the bottom of the press-fit screw sleeve It is provided with straight knurling, the straight knurling part is press-fitted into the opening of the connected piece, the spring is sleeved on the screw, the screw is screwed into the press-fitting screw sleeve, and the screw head is provided with a hand Screw the mounting hole of the lifting ring, and connect the lifting ring by hand to the screw head through the mounting hole. Although this kind of quick detachable captive screw can be tightened without using tools, the lifting ring is arc-shaped, and the force area of ​​the fingers is small when tightening by hand, so it is not easy to tighten. Utility model content [0004] For the deficiencies existing in the prior art, the purpose of this utility model is to provide a hand screw, which can be easily tightened by hand. The above-mentioned technical purpose of the present utility model is achieved through the following technical solutions: a kind of hand screw, including screw head and screw rod, it is characterized in that: screw head is provided with fixing hole, and in the fixing hole, there is a hanger One side of the hanging plate is integrally provided with a connecting section, and the connecting section is located in the fixing hole. [0006] Through the above-mentioned technical scheme, using the hanging plate to replace the hanging ring, when the finger is in contact with the hanging plate, there can be a larger contact area, so that the finger is relatively evenly stressed, and a large torque can be provided, which is convenient for tightening the screw. [0007] The hanger plate can be rotated along the axis of the fixing hole, and the hanger plate is provided with a circular arc groove that prevents interference with the screw head when the hanger plate rotates. Through the above-mentioned technical scheme, when do not need to use the hanging plate, the hanging plate can be made to rotate along the axis of the fixing hole, so that the hanging plate and the screw head are in the same plane, avoiding when the hanging plate keeps the vertical state and collides with the human body , causing the body to be injured. [0009] The height a of the end face of the connecting section is greater than the width b of the connecting section, and below the fixing hole is an elastic piece that interferes with the connecting section and limits the rotation range of the hanging plate. [0010] Through the above-mentioned technical scheme, when the connecting section and the hanging plate are rotated together, the shrapnel is always in a state of conflict with the connecting section. Because the height of the end face of the connecting section is greater than the width of the connecting section, when the hanging plate is rotated to be in the same plane as the screw head Due to the large contact length between the shrapnel and the end face of the connecting section, a large blocking force will be generated between the two to prevent further rotation of the hanging plate. At the same time, due to the small width of the connecting section, when the hanging plate is parallel to the screw head When it rotates to the plane perpendicular to the screw head, it will not have a large jamming force, and the normal rotation of the hanging plate can be realized. Preferably, the two surfaces parallel to the width direction of the connecting section and the hanging plate are arc surfaces. [0012] Through the above-mentioned technical solution, when the hanger plate is rotated from a state parallel to the screw head to a state perpendicular to the screw head, the clamping force generated between the connecting section and the elastic piece is small, which is convenient for the hanger plate to rotate within this range. [0013] Preferably, the hanging plate is a rectangle, and each corner of the hanging plate is a rounded corner. By above-mentioned technical scheme, the length of the hanging plate is greater than the height, and the hanging plate is generally placed between the index finger and the thumb when the hanging plate is twisted by hand, and the index finger and the thumb are respectively placed at the ends of the two surfaces of the hanging plate. The larger the length of the hanging plate, the larger the force arm between the force application point and the axis of the screw rod, which is convenient for screwing the screw. All corners of the hanging plate are rounded to avoid scratching hands when scratched. [0015] Preferably, the upper end face of the screw head is provided with a cross slot or a slot for screwing the screw with a screwdriver. [0016] Through the above technical solution, when the screw cannot be screwed out using the hanger plate, the screw can be screwed out with a screwdriver. [0017] Preferably, the head of the screw rod is provided with a threaded section, and the diameter of the threaded section is greater than the diameter of the screw rod. [0018] Through the above-mentioned technical scheme, the diameter of the threaded section is greater than the diameter of the screw rod, the strength of the threaded section can be increased, and the threaded section is prevented from being damaged due to the small threaded section, ensuring the connection strength. To sum up, the beneficial effect of the present utility model in contrast to the prior art is: by using the hanging plate to twist the screw, the contact area between the hand and the hanging plate is increased, and when the screw is screwed, more Large torque, easy to screw the screw. At the same time, a connecting section is arranged on one side of the hanging plate, and a circular arc groove is arranged in the hanging plate, so that the hanging plate can be rotated on the screw head, which is convenient for the storage of the hanging plate when the hanging plate does not need to be twisted. Set the shrapnel to limit the rotation range of the hanging plate to prevent the thread on the hanging plate and the screw from interfering and destroying the thread during transportation. Description of drawings Fig. 1 is the perspective view of embodiment; Fig. 2 is the front view of embodiment hanger; Fig. 3 is the sectional view at A-A place in Fig. 2; [0023] FIG. 4 is an outline view of the top perspective of the embodiment. Reference sign: 11, screw head; 111, shrapnel; 12, screw rod; 121, thread segment; 2, hanging plate; 21, connecting segment; 22, arc groove; 23, arc surface; 3, cross groove. Detailed ways Below in conjunction with accompanying drawing, the utility model is described in further detail. This specific embodiment is only the explanation to the present utility model, it is not the limitation of the present utility model, those skilled in the art can make the modification without creative contribution to the present embodiment as required after reading this specification, but as long as Within the scope of the claims of the present utility model, it is protected by the patent law. As shown in Figure 1, a kind of hand screw, comprises screw head 11 and screw rod 12, is provided with fixing hole on screw head 11, is matched with hanging plate 2 in the fixing hole, and one side of hanging plate 2 is integrally provided with The connecting section 21, the connecting section 21 is located in the fixing hole. In this way, the hanging plate 2 is used to replace the hanging ring, and the fingers and the hanging plate 2 can have a larger contact area, so that the fingers are more evenly stressed, and a large torque can be provided, which is convenient for tightening the screw. The hanging plate 2 can rotate along the fixed hole axis at the same time, and the hanging plate 2 is provided with an arc groove 22 that interferes with the screw head 11 when the hanging plate 2 is rotated, and the hanging plate 2 can be made when the hanging plate 2 is not needed. 2. Rotate along the axis of the fixing hole, so that the hanging plate 2 and the screw head 11 are in the same plane, so as to avoid the human body being injured when the hanging plate 2 is kept vertical and collides with the human body. [0029] In addition, as shown in FIG. 2 and FIG. 3, the height a of the end face of the connecting section 21 is set to be greater than the width b of the connecting section 21, and there is an elastic piece 111 under the fixing hole that interferes with the connecting section 21 to limit the rotation range of the hanging plate. In this way, when the connecting section 21 and the hanging plate 2 are rotated together, the elastic piece 111 is always in a state of conflict with the connecting section 21. Since the height of the end face of the connecting section 21 is greater than the width of the connecting section 21, when the hanging plate 2 rotates to the position where the screw head 11 is connected When the elastic sheet 111 and the end face of the connecting section 21 are in the same plane, the contact length is relatively large, so a large blocking force will be generated between the two, preventing further rotation of the hanging plate 2. At the same time, the width of the connecting section 21 is small, so When the hanging plate 2 rotates from a state parallel to the screw head 11 to a plane perpendicular to the screw head 11 , there will be no large jamming force, and the normal rotation of the hanging plate 2 can be realized. [0030] As shown in FIG. 1 and FIG. 4 , the two surfaces parallel to the width direction of the connecting section 21 and the hanging plate 2 are arc surfaces 23 . In this way, when the hanger plate 2 rotates from a state parallel to the screw head 11 to a state perpendicular to the screw head 11, the blocking force generated between the connecting section 21 and the elastic piece 111 is small, which is convenient for the hanger plate 2 to rotate within this range . At the same time, when the hanging plate 2 rotates, the elastic pieces 111 basically remain in a stationary state, so as to prevent the elastic pieces 111 from being repeatedly deformed, causing the elastic pieces 111 to be broken and unable to limit the position. [0031] As shown in Figure 2, the hanging plate 2 is preferably a rectangle, and each corner of the hanging plate 2 is set to be rounded. Hanging plate 2 is a rectangle, and the length of hanging plate 2 is greater than the height. When screwing hanging plate 2 by hand, generally place hanging plate 2 between the index finger and the thumb, and make the index finger and thumb respectively on the two sides of hanging plate 2. The longer the length of the hanger plate 2, the larger the force arm between the force application point and the axis of the screw rod 12, which is convenient for screwing the screw. All corners of the hanging plate 2 are rounded, so that scratches can be avoided when scratching occurs. [0032] In addition, as shown in FIG. 4 , the upper end surface of the screw head 11 is provided with a cross groove 3 that cooperates with a screwdriver to turn the screw. In this way, when the screw cannot be screwed out by using the hanging plate 2, the screw can be screwed out with a screwdriver. The screw head 11 can also be a slotted slot or a slot that combines the slotted slot and the cross slot 3 . [0033] At the same time, the head of the screw rod 12 is provided with a threaded section 121, and the diameter of the threaded section 121 is larger than the diameter of the screw rod 12. In this way, the strength of the threaded section 121 can be increased, and the threaded section 121 can be prevented from being damaged due to the small size of the threaded section 121, thereby ensuring the connection strength. [0034] The above is only an exemplary embodiment of the present utility model, rather than being used to limit the scope of protection of the present utility model, the scope of protection of the present utility model is determined by the appended claims. Claims (5) Hide Dependent 1. a hand screw, comprising screw head (11) and screw rod (12), it is characterized in that: screw head (11) is provided with fixing holes, the fixing holes are equipped with hanger plate (2), hanger plate ( 2) One side is provided with a connecting section (21), the connecting section (21) is located in the fixing hole, the hanger plate (2) can be rotated along the axis of the fixing hole, and the hanger plate (2) is provided with an avoidance hanger plate (2). 2) The circular arc groove (22) that interferes with the screw head (11) during rotation, the connecting section

Abstract The utility model discloses an adjusting screw. The adjusting screw comprises a head provided with an external thread and a tail without an external thread. The outer diameter of the tail without an external thread is larger than the bottom diameter of the head provided with the external thread or outer diameter. The end surface of the tail is spherical or conical, and the end surface of the head is provided with an adjustment groove for adapting the adjustment tool. The adjustment groove is an inner hexagonal groove, a straight-shaped groove, a cross-shaped groove, a quadrangular groove, a triangular groove, a five-star-shaped groove or a quincunx-shaped groove. In the utility model, since the outer diameter of the tail without external thread is larger than the bottom diameter or the outer diameter of the head provided with external thread, a blocking ring is formed at the junction of the tail and the head, so that the nut matched with it is formed. It cannot fall off from the tail, which improves the safety and reliability of the adjusting screw during use. adjusting screw technical field [0001] The utility model relates to a screw, in particular to an adjustment screw. Background technique In mechanical equipment, adjusting screw is often used to adjust and locate the position of elastic part, for example, in small circuit breaker, the position of bimetal and elastic steel sheet is adjusted by adjusting screw. However, due to the limitation of the space of the use occasion, the length of the adjustment screw is generally short. During installation and use, due to vibration or improper adjustment, the tail of the adjustment screw is easy to fall off from the nut, resulting in adjustment and positioning failure. In addition, the falling off Leaving the adjusting screw in the circuit breaker also creates a safety hazard. Utility model content The technical problem to be solved by this utility model is to solve the problem that the adjustment screw is easy to fall off from the nut. In order to solve the above-mentioned technical problem, the technical scheme adopted in the present utility model is to provide a kind of adjustment screw, and this adjustment screw comprises the head part that is provided with external thread and the tail part that is not provided with external thread, and the outer diameter of tail part is larger than head part bottom or outer diameter. In above-mentioned scheme, the front end face of described tail is in spherical shape, conical shape or stepped shaft shape with small outside and inside big. [0006] In the above-mentioned scheme, the tail end face of the head is provided with an adjustment groove for adapting the adjustment tool. In such scheme, described adjustment groove is inner hexagonal groove, in-line groove, cruciform groove, quadrangular groove, triangular groove, five-star groove or quincunx groove. The utility model, because the outer diameter of the tail that is not provided with external thread is greater than the bottom diameter or the outer diameter of the head that is provided with external thread, therefore at the junction of the tail that is not provided with external thread and the head that is provided with external thread A blocking ring is formed at the top, so that the matching nut cannot fall off from the tail, which improves the safety and reliability of the adjusting screw during use. Description of drawings Fig. 1 is the structural representation of the present utility model. Detailed ways Below in conjunction with accompanying drawing, the utility model is described in detail. As shown in Figure 1, the adjusting screw 1 that the utility model provides comprises the head 12 that is provided with external thread and the tail 11 that is not provided with external thread, and the outer diameter of the tail 11 that is not provided with external thread is greater than that provided with external thread The bottom or outer diameter of the head 12. The end portion of the tail portion 11 is spherical, conical or stepped shaft shape with a small outside and a large inside, and the end surface of the head 12 is provided with an adjustment groove 14 for adapting the adjustment tool. Described adjustment groove 14 is a hexagonal groove, a straight groove, a cross groove, a quadrangular groove, a triangular groove, a five-star groove or a quincunx groove. The utility model, because the outer diameter of the tail part 11 that is not provided with external thread is greater than the bottom diameter or the outer diameter of the head 12 that is provided with external thread, therefore in the tail part 11 that is not provided with external thread and the head that is provided with external thread The junction of the part 12 forms a blocking ring 13, so that the matching nut cannot fall off from the tail part 11, but can only be screwed in and out from the head in one direction, which solves the problem of the adjusting screw 1 falling off from the nut, even if It will not fall off when working on machines with high-speed vibration. [0013] The specific application of the adjusting screw in the circuit breaker is described below. After the utility model is combined with the nut, it is installed in the circuit breaker, wherein the nut is installed in the positioning slot corresponding to its shape and size and uses the nut as a positioning, and the adjustment screw is not provided with an external thread tail and the metal in the circuit breaker. The elastic sheet is tight and has elastic contact, and the metal elastic sheet is always applied to the end of the adjusting screw with a kind of elastic force. Therefore, under normal conditions, the adjusting screw will not move and fall out from the head with external threads, but can only move in the direction of the tail without external threads. The outer diameter of 11 is larger than that of the head 12 provided with external threads, so that a blocking ring 13 is formed at the junction of the tail 11 without external threads and the head 12 with external threads, preventing the nut from continuing to move and preventing The nut comes off the tail, which ensures the safe use of the circuit breaker. Beneficial effect of the present utility model is: (1), can make product meet different customer demands by the mode of changing thread specification and pitch specification, and the scope of application of product is more extensive; (2), adjusting screw and nut combination can provide better adjustment and anti-dropping function, even if working on the machine of high-speed vibration, it will not fall off, ensuring the working stability of circuit breaker; (3), because this adjusting screw shape only realizes by changing mould, therefore does not increase the manufacturing cost of product, has good development prospect. The present utility model is not limited to above-mentioned best embodiment, anyone should know the structural change made under the enlightenment of the present utility model, all have identical or similar technical scheme with the present utility model, all fall into the present utility model within the scope of the new protection. Claims (4) Hide Dependent The adjusting screw is characterized in that the adjusting screw comprises a tail part with an external thread on the head and without external thread, and the outer diameter of the tail part is larger than the bottom diameter or the outer diameter of the head part. 2. The adjusting screw according to claim 1, characterized in that the front end surface of the tail is in the shape of a spherical surface, a conical shape, or a stepped shaft shape with a small outside and a large inside. 3. The adjusting screw according to claim 1 or 2, characterized in that an adjusting groove for fitting an adjusting tool is provided on the rear end face of the head. 4. The adjusting screw according to claim 3, wherein the adjusting groove is an inner hexagonal groove, a straight-line groove, a cross-shaped groove, a quadrangular groove, a triangular groove, a five-star groove or a quincunx-shaped groove groove.