CN215470803U

CN215470803U - Screwdriver

Info

Publication number: CN215470803U
Application number: CN202121591192.XU
Authority: CN
Inventors: 蒋好学
Original assignee: Foshan Jieyu Hardware Products Co ltd
Current assignee: Foshan Jieyu Hardware Products Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-01-11
Anticipated expiration: 2031-07-13

Abstract

The utility model discloses a screwdriver, which is characterized in that: the screwdriver comprises a screwdriver rod, wherein a first connecting end and a second connecting end are respectively arranged at two ends of the screwdriver rod; a handle provided with an installation space; one end of the installation space is set as a clutch end, and the other end is set as an adjusting end; the adjusting end is communicated with the outside, and the first connecting end is rotationally connected with the clutch end; the variable torque connecting mechanism comprises a first clutch part, a second clutch part, an elastic piece and an adjusting structure which are arranged in the mounting space; the first clutch part, the second clutch part, the elastic piece and the adjusting structure are sequentially arranged along the directions of the clutch end and the adjusting end; the first clutch part is relatively fixed with the handle, the adjusting structure is in threaded connection with the adjusting end, and the elastic piece enables the second clutch part to be coupled with the first clutch part in a torque locking mode. The maximum torque of the screwdriver is adjustable, and the screwdriver can be adapted to screws with different maximum torque requirements. In addition, the screwdriver of this scheme easy dismounting, the person of facilitating the use maintenance.

Description

Screwdriver

Technical Field

The utility model relates to the technical field of hardware tools, in particular to a screwdriver.

Background

A screwdriver, also known as a screwdriver, is a common hardware tool used to turn a screw to force it into place. Insufficient torque of the screwdriver can affect the precision of equipment installation, so that the equipment is unstable in operation; and too big moment of torsion can lead to screw deformation, if the intensity limit of screw is exceeded, can cause the damage of screw, can fracture when serious, causes the harm to equipment.

The common manual screwdriver does not have the function of limiting the torque, but in the prior art, a screwdriver capable of limiting the maximum torque exists to protect the screw and avoid the damage of the screw caused by the overlarge torque. However, the maximum torque of the screwdriver in the prior art is generally not adjustable, when screws with different maximum torque requirements need to be screwed, different screwdrivers need to be selected for screwing, and the adaptability of the existing screwdriver capable of limiting the maximum torque to the screws with the maximum torque requirements is poor.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the screwdriver is provided to solve one or more technical problems in the prior art, and at least provides a beneficial choice or creation condition.

The solution of the utility model for solving the technical problem is as follows:

a screwdriver which is characterized in that: the screwdriver comprises a screwdriver rod, wherein a first connecting end and a second connecting end are respectively arranged at two ends of the screwdriver rod; a handle provided with an installation space; one end of the installation space is set as a clutch end, and the other end of the installation space is set as an adjusting end; the adjusting end is communicated with the outside, and the first connecting end is rotationally connected with the clutch end; the variable torque connecting mechanism comprises a first clutch part, a second clutch part, an elastic piece and an adjusting structure which are arranged in the mounting space; the first clutch part, the second clutch part, the elastic piece and the adjusting structure are sequentially arranged along the direction from the clutch end to the adjusting end; the first clutch part and the handle are relatively fixed, the adjusting structure is in threaded connection with the adjusting end, and the elastic piece enables the second clutch part and the first clutch part to be coupled in a torque locking mode.

Through the scheme, the adjusting structure is rotated to move forwards or backwards from the clutch end to the adjusting end, so that the distance between the adjusting structure and the second clutch part is adjusted, the length of the elastic piece is changed, the pressing force between the first clutch part and the second clutch part is adjusted, and the torque between the first clutch part and the second clutch part is adjusted. When the handle is screwed, if the friction between the screw and the object to be nailed is smaller than the torque between the first clutch part and the second clutch part, the screw of the screwdriver is rotated, so that the screw is further screwed into the object to be nailed; if the friction between the screw and the object to be driven is larger than the torque between the first clutch part and the second clutch part, the handle is continuously rotated, the elastic piece is compressed, the first clutch part and the second clutch part are separated, and the rotation of the handle does not drive the screwdriver rod to rotate, so that the screw is prevented from being damaged by continuously rotating the screw. The maximum torque of the screwdriver is adjustable, and the screwdriver can be adapted to screws with different maximum torque requirements.

In addition, through will adjusting the direct and handle threaded connection of structure, when the screwdriver of this scheme of installation, only need to set up each part of variable torque coupling mechanism in the installation space entirely, will adjust structure screw in installation space afterwards, can accomplish the installation of the screwdriver of this scheme, carry out opposite action when needs are dismantled, the screwdriver easy dismounting of this scheme, the person of facilitating the use maintenance.

As a further improvement of the above technical solution, the adjusting structure includes a rotation block and a butt block, the rotation block is in threaded connection with the adjusting end, the butt block is arranged on the side where the rotation block is close to the separation end, the rotation block is in butt connection with the butt block, and the butt block is far away from the end face of the rotation block and is connected with the elastic member.

Through the scheme, when the maximum torque of the screwdriver needs to be adjusted, a user rotates the rotating block, so that the rotating block moves along the rotating axis of the handle, and the abutting block is pushed to move, so that the length of the elastic piece is adjusted. Will revolve the piece and separate with the elastic component, can avoid revolving the piece and taking place the friction with the elastic component when rotating and lead to the elastic component wearing and tearing, can effectively improve the life of this screwdriver's elastic component.

As a further improvement of the technical scheme, the rotating block is provided with a rotating groove.

Through above-mentioned scheme, user's accessible external instrument inserts to the rotating groove to rotate through external instrument, thereby make the rotation piece rotate, avoid directly rotating bad phenomena such as the rotation piece appears skidding with the hand.

As a further improvement of the technical scheme, the rotating groove is in a regular hexagon groove-shaped structure.

Through the scheme, the regular hexagonal groove can bear larger torque and is less prone to abrasion compared with groove bodies in other shapes.

As a further improvement of the above technical solution, the first clutch portion includes a plurality of first tooth-shaped surfaces, and the plurality of first tooth-shaped surfaces are circumferentially distributed; the second clutch part comprises a plurality of second toothed surfaces which are distributed circumferentially; the first and second toothed surfaces mesh.

Through above-mentioned scheme, adopt the mode of first profile of tooth and second profile of tooth meshing to realize the separation and reunion, compare in the mode that uses friction to realize the separation and reunion and be difficult to take place to squint or skid.

As a further improvement of the technical scheme, the handle comprises a fixed handle, a driving handle and a connecting block, the fixed handle is arranged on one side, away from the adjusting end, of the driving portion, the fixed handle and the driving handle are relatively fixed, the connecting block and the driving handle are relatively fixed through a limiting structure, and the first clutch portion is arranged on the end face, close to the adjusting end, of the connecting block.

Through the scheme, the handle is disassembled into different parts, different materials can be adopted among the different parts, and the overall performance of the screwdriver can be greatly improved while the cost is controlled within a certain range. And the handle is split into a plurality of parts, so that the important characteristics among all the parts can be processed, the precision of the important characteristics can be ensured, and the matching of all the parts of the screwdriver is ensured.

As a further improvement of the technical scheme, the limiting structure comprises a limiting groove and a limiting protrusion, the limiting groove is formed in the inner wall of the driving handle, the limiting protrusion is fixedly connected with the outer peripheral surface of the connecting block, and the limiting groove is in plug-in fit with the limiting protrusion.

Through the scheme, the limiting groove and the limiting protrusion are used for enabling the connecting block to rotate along with the driving handle.

As a further improvement of the technical scheme, the second connecting end is provided with a batch head mounting groove.

Through the scheme, the screwdriver head mounting groove is used for mounting the detachable screwdriver head, so that the screwdriver can be suitable for screws of different types and specifications.

As a further improvement of the technical scheme, the outer peripheral surface of the handle is provided with anti-skid grains.

Through the scheme, the anti-skidding lines can reduce the occurrence of the situation that the hands of a user slip.

The utility model has the beneficial effects that: the maximum torque of the screwdriver is adjustable, and the screwdriver can be adapted to screws with different maximum torque requirements.

The utility model is used in the technical field of hardware tools.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic illustration of an explosive structure according to an embodiment of the utility model;

FIG. 3 is a schematic view of a half-section of an embodiment of the present invention;

FIG. 4 is a schematic view of the overall structure of a connecting block according to an embodiment of the present invention;

fig. 5 is an overall structural schematic diagram of the second clutch portion according to the embodiment of the utility model.

In the figure, 100, batch rod; 110. a batch head mounting groove; 200. a handle; 201. an installation space; 202. a clutch end; 203. an adjustment end; 210. a fixed handle; 220. a drive handle; 221. a limiting groove; 230. connecting blocks; 231. a first clutch section; 232. a first toothed surface; 233. a limiting bulge; 310. a second clutch section; 320. a second toothed surface; 400. an adjustment structure; 410. rotating the block; 411. rotating the groove; 420. a butting block; 500. an elastic member.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the utility model can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1 to 5, a screwdriver includes a batch bar 100, a handle 200, and a variable torque connection mechanism.

The two ends of the batch rod 100 are respectively a first connecting end and a second connecting end, and the second connecting end is provided with a batch head mounting groove 110 for mounting a batch head.

The handle 200 is a hollow tubular structure, and a cavity of the handle 200 is provided as an installation space 201. One end of the installation space 201 is set as a clutch end 202, the other end is set as an adjusting end 203, and the first connecting end is rotatably connected with the clutch end 202. The handle 200 includes a stationary handle 210, a drive handle 220, and a connecting block 230 (in other embodiments the handle 200 may be provided as a unitary design to facilitate assembly). The fixing handle 210 is disposed at an end of the driving handle 220 away from the adjusting end 203, and the fixing handle 210 and the driving handle 220 are fixed relatively by interference fit. Three limiting structures are arranged between the driving handle 220 and the connecting block 230, and the three limiting structures are distributed around the central axis of the handle 200 in a circumferential array. The limiting structure comprises a limiting groove 221 and a limiting bulge 233. The limiting groove 221 is opened on the inner side wall of the driving handle 220, and an insertion opening is arranged at one end of the limiting groove 221, which is far away from the adjusting end 203, and the insertion opening is communicated with the end face of the driving handle 220. The limiting protrusion 233 is fixedly connected to the outer side wall of the connecting block 230, and the limiting protrusion 233 is inserted into the limiting groove 221 through the insertion opening. The outer peripheral surfaces of the fixing handle 210 and the driving handle 220 are provided with anti-slip threads, in this embodiment, the anti-slip threads are in the form of straight grooves, and in other embodiments, the anti-slip threads may also be in the form of meshes.

The variable torque connection mechanism includes a first clutch portion 231, a second clutch portion 310, an elastic member 500, and an adjustment structure 400 provided in the installation space 201. The first clutch portion 231, the second clutch portion 310, the elastic member 500 and the adjustment structure 400 are arranged in a direction from the clutch end 202 to the adjustment end 203.

The first engaging and disengaging portion 231 is an end of the connecting block 230 near the adjusting end 203 (in other embodiments, if the handle 200 is designed as a single piece, the first engaging and disengaging portion 231 is disposed as an end surface of the engaging and disengaging end 202), the first engaging and disengaging portion 231 is provided with a first engaging and disengaging surface, the first engaging and disengaging surface includes a plurality of first toothed surfaces 232, and the plurality of first toothed surfaces 232 are circumferentially distributed around the central axis of the handle 200.

The second clutch portion 310 is a cylindrical member, and a second clutch surface is disposed on an end surface of the second clutch portion 310 away from the adjustment end 203, and the second clutch surface includes a plurality of second toothed surfaces 320, and the plurality of second toothed surfaces 320 are circumferentially distributed around the central axis of the handle 200. The first clutch surface and the second clutch surface are oppositely arranged. In the present embodiment, the first toothed surface 232 and the second toothed surface 320 are engaged, so that the connecting block 230 and the second clutch portion 310 are locked in a form-fit manner with torque. In other embodiments, the first and second clutch surfaces may be arranged as planes, the coupling between the first and second clutch surfaces being by way of frictional torque locking. The slip phenomenon of friction-type torque locking can be greatly reduced by the form-locking.

The elastic member 500 is provided as a compression spring, and the elastic member 500 is provided between the second clutch portion 310 and the adjustment structure 400.

The adjustment structure 400 includes a rotation block 410 and an abutment block 420. The rotating block 410 is connected with the adjusting end 203 by a screw thread, the rotating block 410 is provided with a rotating groove 411, and the rotating groove 411 is in a regular hexagon groove-shaped structure (in other embodiments, the rotating groove 411 can also adopt a cross-shaped or straight-shaped common groove-shaped structure). The abutting block 420 is disposed on one side of the rotating block 410 close to the engaging end 202, the abutting block 420 abuts against the rotating block 410, and the end surface of the abutting block 420 far from the rotating block 410 abuts against the elastic member 500.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the utility model as set forth in the claims appended hereto.

Claims

1. A screwdriver which is characterized in that: the method comprises the following steps:

the two ends of the batch rod (100) are respectively a first connecting end and a second connecting end;

a handle (200), the handle (200) being provided with an installation space (201); one end of the installation space (201) is set to be a clutch end (202), and the other end is set to be an adjusting end (203); the adjusting end (203) is communicated with the outside, and the first connecting end is rotatably connected with the clutch end (202);

a variable torque connection mechanism comprising a first clutch part (231), a second clutch part (310), an elastic member (500) and an adjustment structure (400) arranged in the mounting space (201); the first clutch part (231), the second clutch part (310), the elastic member (500) and the adjusting structure (400) are sequentially arranged in a direction from the clutch end (202) to the adjusting end (203); the first clutch part (231) is fixed relative to the handle (200), the adjusting structure (400) is in threaded connection with the adjusting end (203), and the elastic piece (500) couples the second clutch part (310) and the first clutch part (231) in a torque locking manner.

2. A screwdriver as defined in claim 1, wherein: adjust structure (400) including the piece that revolves (410) and butt piece (420), revolve the piece (410) with adjust end (203) threaded connection, butt piece (420) set up in revolve piece (410) and be close to one side of separation and reunion end (202), revolve piece (410) with butt piece (420) butt, butt piece (420) are kept away from the terminal surface of the piece that revolves (410) with elastic component (500) are connected.

3. A screwdriver as defined in claim 2, wherein: the rotating block (410) is provided with a rotating groove (411).

4. A screwdriver as defined in claim 3, wherein: the rotating groove (411) is of a regular hexagon groove-shaped structure.

5. A screwdriver as defined in claim 1, wherein: the first clutch portion (231) comprises a plurality of first toothed surfaces (232), a plurality of said first toothed surfaces (232) being circumferentially distributed; the second clutch portion (310) comprises a plurality of second toothed surfaces (320), a plurality of the second toothed surfaces (320) being circumferentially distributed; the first toothed surface (232) and the second toothed surface (320) mesh.

6. A screwdriver as defined in claim 1, wherein: the handle (200) comprises a fixed handle (210), a driving handle (220) and a connecting block (230), the fixed handle (210) is arranged on one side, away from the adjusting end (203), of the driving handle (220), the fixed handle (210) is fixed relative to the driving handle (220), the connecting block (230) is fixed relative to the driving handle (220) through a limiting structure, and the first clutch portion (231) is arranged at one end, close to the adjusting end (203), of the connecting block (230).

7. The screwdriver as defined in claim 6, wherein: the limiting structure comprises a limiting groove (221) and a limiting protrusion (233), the limiting groove (221) is formed in the inner wall of the driving handle (220), the limiting protrusion (233) is fixedly connected with the outer peripheral face of the connecting block (230), and the limiting groove (221) is in plug-in fit with the limiting protrusion (233).

8. A screwdriver as defined in claim 1, wherein: the second connecting end is provided with a batch head mounting groove (110).

9. A screwdriver as defined in claim 1, wherein: the outer peripheral surface of the handle (200) is provided with anti-skid grains.