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