Hand screw convenient for force application

Abstract

The utility model discloses a hand screw facilitating force application. The hand screw comprises a screw body and a hand screwing part. The screw body comprises a screw cap and a screw rod, an inward concave area is arranged on the edge of the screw cap to form a butt joint notch, the hand screwing part comprises a knurled base, an insertion opening top cover and a handle rod, knurling patterns are arranged on the side wall of the knurled base, a butt joint protruding block matched with the butt joint notch is arranged at the bottom of the knurled base, the knurled base covers the screw cap, and the insertion opening top cover covers the screw rod. The socket top cover is fixed to the top of the knurled base, an insertion hole is formed in the side wall of the socket top cover, and the handle rod is detachably inserted into the insertion hole of the socket top cover. An operator can screw the knurled base with one hand and push the handle rod with the other hand, the knurled base and the handle rod are simultaneously matched in the same rotating direction to drive the screw body below to rotate along with the knurled base and the handle rod to simultaneously apply force with the two hands, the screw body is easier to screw, the handle rod and the knurled base are mutually staggered and do not interfere with each other, force is conveniently applied by the hands, and the pressure effect on the hands is shared. And the hand injury is not easily caused.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, in particular to a hand-tightened screw which is convenient for applying force. Background Art

[0002] Screws, as a common fastener, play an important role in daily life and industrial production. However, when tightening or loosening traditional screws, tools such as screwdrivers or wrenches are usually required, which not only increases the cost of use, but also makes operation difficult in some occasions due to space limitations or the inconvenience of carrying tools.

[0003] As a result, hand screws designed specifically for easy hand-tightening operations have appeared on the market, also known as thumb screws. Generally, knurling patterns are set on the side of the nut to increase the friction between the hand and the nut, so that the screw can be turned by hand, or butterfly nuts are used, so that the two wings of the butterfly structure can be directly pressed with the fingers, and the nut is turned to drive the screw to rotate.

[0004] However, the hand-tightened screws in the above prior art are not convenient for applying force by hand due to structural limitations. The nut can only be turned with one hand, and it is difficult to ensure that it is sufficiently tightened after turning. Even if it can be tightened, it requires a large force to be applied by hand. Since the knurled pattern and the butterfly structure provide a small contact area for the hand, the pressure generated by the structure can easily cause injury to the hand. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a hand screw that is easy to apply force to solve the above problem.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a hand-tightening screw which is convenient for applying force, and comprises a screw body and a hand-tightening part.

[0008] The screw body includes a nut and a screw rod connected to the lower end surface of the nut. An inwardly recessed area is provided on the edge of the nut to form a docking notch. The hand-tightening portion includes a knurled base, a socket top cover and a handle rod.

[0009] The side wall of the knurled base is provided with a knurled pattern, the bottom of the knurled base is provided with a docking protrusion matched with the docking notch, and the knurled base cover is arranged on the nut so that the docking protrusion is embedded in the docking notch and fixed;

[0010] The socket top cover is fixed to the top of the knurled base, the socket top cover is disc-shaped, and a plug-in hole is opened on the side wall of the socket top cover;

[0011] The handle rod is detachably plugged into the plug hole of the socket top cover, and the handle rod extends along the radial direction of the socket top cover toward the center of the socket top cover.

[0012] Preferably, a finger buckle ring is provided on the handle bar, and a hole is formed in the finger buckle ring for inserting fingers.

[0013] Preferably, a tool tightening groove is provided on the socket top cover.

[0014] Preferably, a wedge groove is provided on the nut, and a wedge block which can be wedged into the wedge groove is provided at the bottom of the knurled base.

[0015] Preferably, the plug-in hole is a circular hole or a square hole.

[0016] Preferably, the socket top cover and the knurled base are integrally formed.

[0017] Preferably, the plug-in hole of the socket top cover is a threaded hole.

[0018] The technical effects achieved by the technical solution of the utility model mainly include:

[0019] Based on the above-mentioned hand-tightened screw that is easy to apply force, the operator can turn the knurled base with one hand and push the handle bar with the other hand. The two can cooperate with each other at the same time to drive the socket top cover and the knurled base below it in the same direction. Through the cooperation of the docking protrusion and the docking notch, the screw body below also rotates. Therefore, the operator can apply force with both hands at the same time to provide power for the direction. Compared with the traditional hand-tightened screws in the prior art, it is easier to turn the screw body. The handle bar and the knurled base are offset from each other and do not interfere with each other, which is convenient for hand force application, sharing the total force required to turn the screw body, relatively reducing the pressure on the hand, and not easy to cause hand damage;

[0020] The handle bar is connected to the side wall of the socket top cover, which acts as a lever, which is relatively more labor-saving and easier to apply force;

[0021] The hand-tightening part is detachably connected to the screw body, and the hand-tightening part can be removed in the reverse direction of the sealing direction of the knurled base, and then used to tighten other screw bodies;

[0022] The nut can be easily screwed only if it has a structure matching its docking notch, which can play an anti-theft role for the equipment installed by the hand screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of a hand-tightened screw for easy force application provided by an embodiment of the utility model;

[0024] Figure 2 It is a structural disassembly diagram of the hand screw;

[0025] Figure 3 It is a bottom view of the knurled base in the thumb screw.

[0026] The reference numerals in the above drawings are:

[0027] The screw body 1, the nut 11, the docking notch 110, the wedge groove 111, the screw rod 12, the hand-tightening part 2, the knurled base 21, the docking protrusion 211, the wedge block 212, the socket top cover 22, the plug hole 220, the tightening groove 221, the handle rod 23, and the finger buckle ring 231. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the utility model shown in the accompanying drawings and described according to the accompanying drawings are merely exemplary, and the utility model is not limited to these embodiments.

[0029] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not very relevant are omitted.

[0030] Reference Figures 1 to 3 As shown, an embodiment of the utility model provides a hand-tightening screw that is easy to apply force, which includes a screw body 1 and a hand-tightening part 2.

[0031] The screw body 1 includes a nut 11 and a screw rod 12 connected to the lower end surface of the nut 11. An inwardly recessed area is provided on the edge of the nut 11 to form a docking notch 110. The hand-tightening part 2 includes a knurled base 21, a socket top cover 22 and a handle rod 23.

[0032] The side wall of the knurled base 21 is provided with a knurled pattern, and the bottom of the knurled base 21 is provided with a docking protrusion 211 that cooperates with the docking notch 110. The knurled base 21 is covered on the nut 11 so that the docking protrusion 211 is embedded in the docking notch 110 and fixed. The knurled pattern on the side wall of the knurled base 21 can increase the contact friction so that the knurled base 21 can be twisted by fingers, and when the knurled base 21 is twisted, the screw body 1 below will be driven to rotate together;

[0033] The socket top cover 22 is fixed to the top of the knurled base 21, and the socket top cover 22 is disc-shaped, and a plug-in hole 220 is opened on the side wall of the socket top cover 22;

[0034] The handle rod 23 is detachably plugged into the insertion hole 220 of the socket top cover 22. The handle rod 23 extends along the radial direction of the socket top cover 22 toward the center of the socket top cover 22, so the handle rod 23 can push the socket top cover 22 to rotate around its central axis.

[0035] Therefore, based on the above-mentioned hand-tightened screw that is easy to apply force, the operator can twist the knurled base 21 with one hand, and push the handle bar 23 with the other hand to drive the socket top cover 22 and the knurled base 21 below it in the same direction as the knurled base 21. Through the cooperation of the docking protrusion 211 and the docking notch 110, the lower screw body 1 also rotates accordingly. Since both hands of the operator can provide steering power, it is easier to twist the screw body 1 than the traditional hand-tightened screw in the prior art. The handle bar 23 and the knurled base 21 that are misaligned and do not interfere with each other are convenient for hand force application. The combined structure distributes the required force, relatively reduces the pressure on the hand, and is not easy to cause hand damage. In addition, the handle bar 23 is connected to the outside of the side wall of the socket top cover 22, playing the role of a lever, which is relatively more labor-saving and easier to apply force.

[0036] Since the knurled base 21 is embedded in the docking notch 110 and fixed by the protrusion 211, the knurled base 21 is covered on the nut 11, and the protrusion 211 and the docking notch 110 only abut against each other in the rotation direction. The hand-tightening portion 2 and the screw body 1 form a detachable connection, and the hand-tightening portion 2 can be removed in the reverse direction of the sealing direction of the knurled base 21. The hand-tightening portion 2 can be reused to tighten other screw bodies 1, and the nut 11 can be easily screwed only if it has a structure matching its docking notch 110, which can play an anti-theft effect on the equipment installed with the hand-tightening screw.

[0037] Furthermore, a finger buckle ring 231 is provided on the handle bar 23, and a hole is opened in the finger buckle ring 231 for fingers to buckle in, so that the grip is more stable when pushing the handle bar 23. The ring structure provides a larger contact area for the fingers and a smaller pressure, so the fingers are less likely to be injured when applying force.

[0038] Furthermore, a tool tightening groove 221 is provided on the socket top cover 22. That is, the operator can also be provided with the option of using a tool to tighten the above-mentioned hand screw. For example, the tool tightening groove 221 can be set as a conventional slot, a cross slot, a hexalobular slot, etc.

[0039] In order to make the structural connection between the screw body 1 and the hand-tightening part 2 more stable when the two are rotated, a wedge groove 111 is provided on the nut 11 on the basis of the matching and clamping docking protrusion 211 and the docking notch 110, and a wedge block 212 that can be wedged into the wedge groove 111 is provided at the bottom of the knurled base 21.

[0040] For example, the plug hole 220 is a circular hole or a square hole. The plug hole 220 is used to limit and fix the handle bar 23. When the handle bar 23 is pushed, the inner wall of the plug hole 220 is under pressure, so the hole shape that is easy to connect and disassemble or stable to connect can be selected according to needs.

[0041] Therefore, under the premise of considering the stable connection and easy disassembly between the balance plug hole 220 and the handle rod 23, in this embodiment, the plug hole 220 of the socket top cover 22 is a threaded hole, and the part of the handle rod 23 inserted into the plug hole 220 is correspondingly provided with threads, so that the threaded connection is more stable and convenient for disassembly.

[0042] In this embodiment, the socket top cover 22 and the knurled base 21 are integrally formed, and the connection between the knurled base 21 and the socket top cover 22 is more stable and more convenient to process.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A hand screw for easy force application, characterized in that: It comprises a screw body (1) and a hand-tightening part (2). The screw body (1) comprises a nut (11) and a screw rod (12) connected to the lower end surface of the nut (11); an inwardly recessed area is provided on the edge of the nut (11) to form a docking notch (110); the hand-tightening portion (2) comprises a knurled base (21), a socket top cover (22) and a handle rod (23); The side wall of the knurled base (21) is provided with a knurled pattern, the bottom of the knurled base (21) is provided with a docking protrusion (211) that matches the docking notch (110), and the knurled base (21) is covered on the nut (11) so that the docking protrusion (211) is embedded in the docking notch (110) and fixed; The socket top cover (22) is fixed to the top of the knurled base (21), the socket top cover (22) is disc-shaped, and a plug-in hole (220) is provided on the side wall of the socket top cover (22); The handle rod (23) is detachably plugged into the plug hole (220) of the socket top cover (22), and the handle rod (23) extends along the radial direction of the socket top cover (22) toward the center of the socket top cover (22).

2. The hand screw for easy force application according to claim 1, characterized in that: The handle bar (23) is provided with a finger buckle ring (231), and a hole is provided in the finger buckle ring (231) for inserting a finger.

3. The hand screw for easy force application according to claim 1, characterized in that: The socket top cover (22) is provided with a tool tightening groove (221).

4. The hand screw for easy force application according to claim 3, characterized in that: The nut (11) is provided with a wedge groove (111), and the bottom of the knurled base (21) is provided with a wedge block (212) which can be wedged into the wedge groove (111).

5. The hand screw for easy force application according to claim 1, characterized in that: The plug-in hole (220) is a circular hole or a square hole.

6. The hand screw for easy force application according to claim 1, characterized in that: The socket top cover (22) and the knurled base (21) are integrally formed.

7. The hand screw for easy force application according to claim 1, characterized in that: The insertion hole (220) of the socket top cover (22) is a threaded hole.

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