CN216967608U

CN216967608U - Screwdriver with torsion protection

Info

Publication number: CN216967608U
Application number: CN202220770160.4U
Authority: CN
Inventors: 李威
Original assignee: Dongguan Gosemay Medical Technology Co ltd
Current assignee: Dongguan Gosemay Medical Technology Co ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-07-15
Anticipated expiration: 2032-04-02

Abstract

The utility model relates to a screwdriver with torque force protection, which comprises a handle, a torsional spring, a ratchet wheel, a rotating rod and a screwdriver head, wherein the ratchet wheel is fixed on the rotating rod, the torsional spring is sleeved on the rotating rod, the handle is provided with a rotating groove for the rotating rod to rotate, the inner surface of the rotating groove is provided with a clamping groove, one end of the torsional spring is clamped with the ratchet wheel, the other end of the torsional spring is abutted against the clamping groove, and the screwdriver head is connected with the rotating rod. Above-mentioned screwdriver with torsion protection, screwdriver bit can change according to the screw model of difference, adsorbs screwdriver bit through magnet during the installation fixed, and the installation is simple and convenient, and sets up through torsional spring and ratchet cooperation, and when the torsion of torsional spring surpassed a definite value, the torsional spring broke away from the ratchet, can protect torsional spring and ratchet, the life of extension torsional spring and ratchet.

Description

Screwdriver with torsion protection

Technical Field

The utility model relates to the technical field of screwdrivers, in particular to a screwdriver with torque protection.

Background

The existing screwdriver generally drives the screwdriver to open the screw through the rotation of the wrist, if the traditional screwdriver is used for a long time, the traditional screwdriver can damage the wrist to a certain extent, and the efficiency is low. The existing screwdriver has small torque due to small circumferential force arm, is difficult to slip when rotating, and brings inconvenience to disassembly and assembly. And the traditional screwdriver that uses does not have torsion protect function, can damage the screw behind the torsion too big, and current screwdriver does not have can dismantle the function, and perhaps screwdriver bit installation is complicated, is difficult for the installation to and torsion protect function uses part life weak point, the easy fracture and wearing and tearing appear, such as the novel hardware and tools that chinese patent (patent number is 201420650080.0) disclosed, this kind of instrument leads to the torsional spring fracture easily when torsion is too big, leads to life to hang down.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a screwdriver with torque protection to solve the technical problems, and the screwdriver has the torque protection function and is not easy to break and wear.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a screwdriver with torsion protection, is including handle, torsional spring, ratchet, rotary rod and screwdriver head, the ratchet is fixed in on the rotary rod, the torsional spring cover is located on the rotary rod, be equipped with on the handle and supply rotary rod pivoted rotation groove, the internal surface that rotates the groove is equipped with the draw-in groove, the one end of torsional spring with the ratchet joint, the other end with the draw-in groove butt, screwdriver head with rotary rod connection.

As a preferred technical scheme, including fixed part, connecting portion and supporting part on the rotary rod, the fixed part connecting portion with the supporting part connects gradually, the fixed part with screwdriver head connects, the ratchet is fixed in on the connecting portion, the torsional spring housing is located on the supporting part.

As a preferable technical solution, a supporting groove is provided on a bottom surface of the rotating groove, and an end of the supporting portion is provided in the supporting groove.

As a preferred technical scheme, a clamping block is arranged at an opening of the rotating groove, a clamping groove is formed in the fixing portion, the clamping groove is annularly formed in the fixing portion, and the clamping block is clamped in the clamping groove.

As a preferable technical solution, a bit fixing groove is provided on the fixing portion, and the shape of the bit fixing groove matches the shape of the fixing end of the screwdriver bit.

As a preferred technical solution, the cross section of the fixing end of the screwdriver bit is polygonal.

As a preferable mode, a magnet is further provided, and the magnet is provided in the bit fixing groove.

The utility model has the beneficial effects that: above-mentioned screwdriver with torsion protection, screwdriver bit can be changed according to the screw model of difference, adsorbs screwdriver bit through magnet during the installation fixed, and the installation is simple and convenient, and sets up through torsional spring and ratchet cooperation, and when the torsion of torsional spring surpassed a definite value, the torsional spring breaks away from the ratchet, can protect torsional spring and ratchet, prolongs the life of torsional spring and ratchet.

Drawings

FIG. 1 is an exploded view of a torque-protected screwdriver according to the present invention;

FIG. 2 is a cross-sectional view of a torque-protected screwdriver according to the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Please refer to fig. 1 and 2, a screwdriver with torque protection comprises a handle 1, a torsion spring 2, a ratchet 3, a rotating rod 4, a magnet 5 and a screwdriver bit 6, wherein the ratchet 3 is fixed on the rotating rod 4, the torsion spring 2 is sleeved on the rotating rod 4, a rotating groove 11 for rotating the rotating rod 4 is formed in the handle 1, a clamping groove 12 is formed in the inner surface of the rotating groove 11, one end of the torsion spring 2 is clamped with the ratchet 3, the other end of the torsion spring is abutted against the clamping groove 12, one end of the torsion spring 2 is fixed through the clamping groove 12, so that the torsion spring 2 can apply torque to the ratchet 3, the magnet 5 is arranged on the rotating rod 4, the screwdriver bit 6 is connected with the rotating rod 4 through the magnet 5, and the screwdriver bit 6 is convenient to install.

Referring to fig. 1, 2 and 3, specifically, the rotating rod 4 includes a fixing portion 43, a connecting portion 42 and a supporting portion 41, the fixing portion 43, the connecting portion 42 and the supporting portion 41 are sequentially connected and fixed, the magnet 5 is disposed on the fixing portion 43, the fixing portion 43 is connected to the screwdriver bit 6 through the magnet 5, the ratchet 3 is fixed on the connecting portion 42, the torsion spring 2 is sleeved on the supporting portion 41, wherein a latch 14 is disposed at an opening of the rotating slot 11, a slot 432 is disposed on the fixing portion 43, the slot 432 is annularly disposed on the fixing portion 43, the latch 14 is clamped in the slot 432, the rotating rod 4 is prevented from being separated from the handle 1 during rotation, and an inclined plane 433 is disposed on one side of the fixing portion 43 close to the connecting portion 42, so that the latch 14 moves along the inclined plane 433 to be clamped into the slot 432. The bottom surface of the rotation groove 11 is provided with a support groove 13, and the end of the support portion 41 is disposed in the support groove 13 to prevent the rotation lever 4 from deflecting during rotation. Be equipped with tool bit fixed slot 431 on fixed part 43, the shape of tool bit fixed slot 431 matches with the shape of the fixed tip of screwdriver bit 6, and magnet 5 sets up in tool bit fixed slot 431, and the cross section of the fixed tip of screwdriver bit 6 is the polygon, can be triangle-shaped, square or regular pentagon in this embodiment, can fix screwdriver bit 6, prevents that in-process screwdriver bit 6 at the lock screw from taking place to rotate.

Before the screw needs to be locked, the screwdriver head 6 is selected according to the type of the screw to be locked, the fixed end of the screwdriver head 6 is aligned with the screwdriver head fixing groove 431, the magnet 5 adsorbs the fixed end of the screwdriver head 6, and the fixed end of the screwdriver head 6 is fixed in the screwdriver head fixing groove 431, so that the installation of the screwdriver head 6 is completed; when the screwdriver is used, the screwdriver head 6 is aligned with a locking screw, the rotating handle 1 is locked, the rotating rod 4 rotates in the rotating process, the torsion spring 2 deforms, and the rotating rod 4 is driven to rotate towards the locking direction of the screw, so that the screwdriver is more labor-saving in use, when the torsion force reaches a certain value, the ratchet wheel 3 cannot tightly clamp the end part of the torsion spring 2, the ratchet wheel 3 is separated from the torsion spring 2, the torsion force protection is realized, the stress borne by the ratchet wheel 2 is reduced by the installation mode of the ratchet wheel 3 and the torsion spring 2, the service life of the ratchet wheel 2 is prolonged, and the product quality is improved.

Before the screwdriver with the torque force protection is used by loosening a screw, firstly, a screwdriver head 6 is selected according to the type of the screw to be loosened, the fixed end part of the screwdriver head 6 is aligned with the screwdriver head fixing groove 431, the magnet 5 adsorbs the fixed end part of the screwdriver head 6, and the fixed end part of the screwdriver head 6 is fixed in the screwdriver head fixing groove 431 to complete the installation of the screwdriver head 6; during the use, with the screwdriver head 6 alignment screw, twist grip 1 carries out doing the action of loosening to the lock solid screw, at rotatory in-process, rotation takes place for rotary rod 4, torsional spring 2 takes place to deform, and it is rotatory to drive rotary rod 4 to the direction that the screw loosens, it is more laborsaving when making this screwdriver use, ratchet 3 can be with the tip chucking of torsional spring 2, can not be with the tip separation of torsional spring 2 at rotatory in-process ratchet 2, make torsional spring 2 can provide torsion, labour saving and time saving always.

The above-described embodiments are merely preferred examples of the present invention, and not intended to limit the scope of the utility model, so that equivalent changes or modifications in the structure, features and principles of the utility model described in the claims should be included in the claims.

Claims

1. The utility model provides a screwdriver with torsion protection, a serial communication port, including handle, torsional spring, ratchet, rotary rod and screwdriver bit, the ratchet is fixed in on the rotary rod, the torsional spring cover is located on the rotary rod, be equipped with on the handle and supply rotary rod pivoted rotation groove, the internal surface that rotates the groove is equipped with the draw-in groove, the one end of torsional spring with the ratchet joint, the other end with the draw-in groove butt, screwdriver bit with rotary rod connection.

2. The screwdriver with the torque force protection as recited in claim 1, wherein the rotating rod comprises a fixing portion, a connecting portion and a supporting portion, the fixing portion, the connecting portion and the supporting portion are sequentially connected, the fixing portion is connected with the screwdriver head, the ratchet wheel is fixed on the connecting portion, and the torsion spring is sleeved on the supporting portion.

3. The torque force protected screwdriver according to claim 2, wherein the bottom surface of the rotation groove is provided with a support groove, and the end of the support part is disposed in the support groove.

4. The screwdriver according to claim 2 or 3, wherein a locking block is disposed at an opening of the rotation slot, a locking groove is disposed on the fixing portion, the locking groove is annularly disposed on the fixing portion, and the locking block is locked in the locking groove.

5. The torque-protected screwdriver according to claim 4, wherein the fixing portion is provided with a bit-fixing groove having a shape matching the shape of the fixing end of the screwdriver bit.

6. The torque protected screwdriver according to claim 5, wherein said fixed end of said screwdriver bit is polygonal in cross-section.

7. The torque-protected screwdriver according to claim 6, further comprising a magnet disposed in said bit-securing slot.