WO2015032230A1

WO2015032230A1 - Ratchet wrench

Info

Publication number: WO2015032230A1
Application number: PCT/CN2014/079577
Authority: WO
Inventors: 徐卫锋
Original assignee: 绍兴恒力工具有限公司
Priority date: 2013-09-06
Filing date: 2014-06-10
Publication date: 2015-03-12
Also published as: CN203418480U

Abstract

A ratchet wrench comprises a movable jaw (21), a fixing jaw (22), a wrench head (25), a handle (26), a first ratchet mechanism (23) and a second ratchet mechanism (24). The fixing jaw (22) is fixedly provided at one end of the top of the wrench head (25). The movable jaw (21) is provided at the other end thereof, and can be slid towards the fixing jaw (22). The top portion of the handle (26) is connected with the bottom of the wrench head (25). The first ratchet mechanism (23) is hinged within the movable jaw (21), and the second ratchet mechanism (24) is hinged within the fixing jaw (22).

Description

Ratchet wrench

Technical field

The utility model relates to a ratchet wrench.

Background technique

A wrench is a commonly used mounting and dismounting tool that is a hand tool that uses a lever principle to twist a bolt, screw, nut, and other threaded opening or socket firmware of a bolt or nut. When the wrench is normally used, apply an external force in the direction of the thread rotation and turn the bolt or nut.

Please refer to FIG. 1. FIG. 1 is a schematic view of a prior art wrench. The prior art wrench generally includes a movable wrench 11, a fixed wrench 12, a wrench 15 and a handle 16; the fixed wrench 12 is fixedly disposed at an upper end of the wrench 15; the movable wrench 11 and the wrench 15 The upper end is connected, and the movable wrench 11 is slidable toward the fixed wrench 12; the bottom of the wrench 15 is connected to the upper end of the handle. The bottom end surface of the movable jaw 11 is provided with a threaded sliding portion 111. The guide 15 is provided with a slideway, a receiving groove, a shaft and a worm 154. The slide is disposed on the upper end surface of the wrench 15, the receiving groove is disposed below the slide, and the receiving groove The upper end is connected to the slide rail, and the shaft rod passes through the worm 154 and is disposed together in the accommodating groove, and the two ends of the shaft rod are respectively connected with the opposite inner walls of the accommodating groove. The worm 154 is rotatable about the shaft and the rod 154 is in meshing engagement with the helical slide 111. When the existing wrench is used, the spiral sliding portion 111 in the movable jaw 11 is slid to the fixed jaw by the finger, so that the movement of the clamping nut is made, so that the inner wall of the movable wrench 11 contacts the nut. Then, force the rotary wrench to turn the nut. However, the existing wrench has the following problems: When the operating space is limited, that is, the wrench cannot be allowed to rotate the nut to rotate the nut, the action can only be rotated by a small angle; then when the nut needs to be continuously turned When the wrench is removed, the nut must be turned over at an angle and then the nut is rotated. This action needs to be repeated, which is inconvenient to use and reduces the operator's working efficiency.

Utility model content

The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art, in order to remove the wrench and re-engage the nut after the wrench is rotated by an angle in a limited operating space, and provide a reciprocating function when the workpiece is screwed A ratchet wrench that is sporty, unaffected by the operating space and easy to operate, improves operator productivity.

The utility model is realized by the following technical solutions: A ratchet wrench includes a movable wrench, a fixed wrench, a wrench and a handle. The fixed wrench is fixedly disposed at one end of the top of the wrench, the movable wrench is disposed at the other end of the top of the wrench, and the movable wrench can slide to the fixed wrench; the top of the handle and the top of the handle Connect at the bottom. It is important to further include: a first ratchet mechanism and a second ratchet mechanism, the first ratchet mechanism being hingedly coupled to the movable wrench; the second ratchet mechanism being hingedly coupled to the fixed trigger. The structure provides a ratchet wrench that can reciprocate when the workpiece is twisted, is not affected by the operation space, and is easy to operate, thereby improving the operator's work efficiency.

The first ratchet mechanism includes a first guide rod, a first spring, a first guide groove, and a first ratchet. The first ratchet hinge is connected to In the movable trigger, the first guiding groove is disposed in the first ratchet, and the first guiding rod penetrates through the first spring and is disposed together in the first guiding groove. The second ratchet mechanism includes a second guide rod, a second spring, a second guide groove, and a second ratchet. The second ratchet hinge is connected to the fixed wrench, the second guiding groove is disposed in the second ratchet, and the second guiding rod penetrates through the second spring and is disposed together in the second guiding slot. Since the ratchet mechanism has two states of bouncing and retracting, when the bouncing mechanism is in the pop-up state, the first ratchet mechanism and the second ratchet mechanism rotate the workpiece clockwise to rotate the workpiece, and the workpiece and the movable panel The mouth is engaged with the fixed wrench. When it is in the retracted state, the first ratchet mechanism and the second ratchet mechanism rotate counterclockwise about the workpiece to release the engagement between the workpiece and the two ratchet mechanisms, ie, the first ratchet mechanism and the second The ratchet mechanism idly moves around the workpiece in a counterclockwise direction. Therefore, the first ratchet mechanism and the second ratchet mechanism enable the ratchet wrench to reciprocate rapidly when the operating space is limited, thereby ensuring that the ratchet wrench in operation always maintains a good working angle and does not It is necessary to remove the wrench and re-insert the nut after the wrench is rotated by an angle, which is convenient for the operator's work and improves the operator's work efficiency.

The lower end surface of the movable jaw is provided with a threaded sliding portion; the upper end surface of the wrench is provided with a slide; the threaded sliding portion is embedded in the slide, and the threaded sliding portion is slidable in the slide. This setting enables adjustment of the size of the wrench.

The ferrule is further provided with a receiving groove, a shaft and a worm; the accommodating groove is disposed at a lower end of the slideway in the wrench, and an upper end of the accommodating groove communicates with the sliding track; the shaft passes through The worm is disposed in the accommodating groove together, and both ends of the shaft are fixedly connected to the opposite inner walls of the accommodating groove, and the worm is engaged with the thread sliding portion of the movable rivet. Due to the arrangement of the above structure, the adjustment of the opening size of the wrench is achieved by controlling the sliding direction of the threaded sliding portion by rotating the worm.

The inner side surfaces of the movable wrench and the fixed wrench are respectively two curved tooth faces, or the movable inner side of the movable wrench and the fixed wrench are two parallel parallel tooth faces. The movable wrench and the inner side of the fixed wrench are arranged as tooth surfaces to increase the friction between the two wrenches of the workpiece, so that the ratchet wrench is less prone to slipping when the workpiece is turned.

For a better understanding and implementation, the present invention will be described in detail below with reference to the accompanying drawings.

DRAWINGS

Figure 1 is a schematic illustration of a prior art wrench.

2 is a perspective view of a ratchet wrench of the present invention.

3 is a cross-sectional view of a ratchet wrench of the present invention.

4 is an exploded view of the ratchet wrench of the present invention.

FIG. 5 is a schematic view showing the installation of a ratchet mechanism of a ratchet wrench according to the present invention.

detailed description

2 and FIG. 3, wherein FIG. 2 is a perspective view of a ratchet wrench of the present invention; and FIG. 3 is a cross-sectional view of a ratchet wrench of the present invention. The ratchet wrench 20 of the present invention includes a movable wrench 21, a fixed wrench 22, The first ratchet mechanism 23, the second ratchet mechanism 24, the wrench 25 and the handle 26. The fixed wrench 22 is fixedly disposed at one end of the top of the wrench 25, the movable wrench is disposed at the other end of the top of the wrench 25, and the movable wrench can slide to the fixed wrench; the top of the handle 26 is The bottom of the wrench 25 is connected. The first ratchet mechanism 23 is hingedly connected to the movable wrench 21; the second ratchet mechanism 24 is hingedly connected to the fixed wrench 22 .

Specifically, please refer to FIG. 4 and FIG. 5, wherein FIG. 4 is an exploded view of a ratchet wrench of the present invention; and FIG. 5 is a schematic view of the ratchet mechanism of the ratchet wrench of the present invention. The first ratchet mechanism 23 includes a first guide rod 231, a first spring 232, a first guide groove 233, and a first ratchet 234. The first ratchet 234 is hingedly connected to the movable jaw 21, and the first guiding slot 233 is disposed in the first ratchet 234. The first guiding rod 231 extends through the first spring 232 and is disposed together at the first In the guide groove 233.

The second ratchet mechanism 24 includes a second guide rod 241, a second spring 242, a second guide groove 243, and a second ratchet 244. The second ratchet 244 is hingedly connected to the fixed wrench 22, the second guiding groove 243 is disposed in the second ratchet 244, and the second guiding rod 241 is inserted through the second spring 242 and disposed together in the second In the guide groove 243.

The movable jaw 21 is provided with a threaded sliding portion 211 which is disposed on the lower end surface of the movable jaw 21.

The wrench 25 is provided with a slide 251, a receiving groove 252, a shaft 253, and a worm 254. The slide 251 is disposed on the wrench

The upper end surface of the slide portion 251 is fitted into the threaded sliding portion 211 of the movable wrench, that is, the threaded sliding portion 211 of the movable wrench is embedded in the slide rail 251 and the threaded sliding portion 211 can be slid Slide 251. The accommodating groove 252 is disposed at the lower end of the sliding portion 252, and the upper end of the accommodating groove 252 is communicated with the sliding path 251. The shaft 253 passes through the worm 254 and is disposed together in the accommodating groove 252, and The two ends of the shaft 253 are fixedly connected to the opposite inner walls of the accommodating groove 252, respectively. At the same time, the worm 254 is rotatable about the shaft 253, and the worm 254 is meshed with the threaded sliding portion 211.

The movable jaw 21 and the inner side of the wrench of the fixed wrench 22 are respectively two curved tooth faces.

In addition, in this embodiment, there are other modified embodiments. For example, the movable inner side 21 and the inner side of the fixed side of the fixed wrench 22 are two parallel parallel tooth faces.

The working principle of the utility model is as follows:

When the workpiece is to be rotated, the worm 254 is rotated by hand. Since the worm 254 is engaged with the threaded sliding portion 211, the rotation of the worm 254 causes the threaded sliding portion 211 to slide in the slide 251. Then, the threaded sliding portion 211 drives the movable wrench 21 to move to the fixed wrench 22 until the first ratchet 234 of the movable wrench 21 and the second ratchet 244 of the fixed wrench 22 just clamp the workpiece to stop. The worm 254 is rotated, and the workpiece can be twisted. Since the ratchet mechanism has two states of bouncing and retracting, when the bouncing mechanism is in the bouncing state, the first ratchet mechanism 23 and the second ratchet mechanism 24 rotate the workpiece clockwise around the workpiece, and the workpiece and the workpiece are Activity wrench 21 and the solid The fixed wrench 22 is engaged. When it is in the retracted state, the first ratchet mechanism 23 and the second ratchet mechanism 24 rotate counterclockwise about the workpiece to release the engagement between the workpiece and the two ratchet mechanisms, that is, the first ratchet mechanism 23 and The second ratchet mechanism 24 performs an idling motion about the workpiece in the counterclockwise direction. Therefore, the first ratchet mechanism 23 and the second ratchet mechanism 24 enable the ratchet wrench 20 to reciprocate rapidly when the operating space is limited, thereby ensuring that the ratchet wrench 20 in operation is always well maintained. The working angle does not require the ratchet wrench 20 to be removed after the ratchet wrench 20 is rotated by an angle and the nut is re-inserted to facilitate the operator's work and improve the operator's work efficiency.

Compared with the prior art, the utility model provides a ratchet wrench which can reciprocate when the workpiece is twisted, is not affected by the operation space and is convenient to operate, and improves the working efficiency of the operator.

The present invention is not limited to the above embodiments, and various modifications and variations of the present invention are possible without departing from the spirit and scope of the invention. The invention is also intended to cover such modifications and variations.

Claims

The invention relates to a ratchet wrench, comprising a movable wrench, a fixed wrench, a wrench and a handle; the fixed wrench is fixedly disposed at one end of the top of the wrench, and the movable wrench is disposed at the other end of the top of the wrench And the movable trigger is slidable to the fixed wrench; the top of the handle is coupled to the bottom of the wrench; and characterized by: further comprising a first ratchet mechanism and a second ratchet mechanism; the first ratchet mechanism is hingedly connected to The movable ratchet; the second ratchet mechanism is hingedly connected to the fixed trigger.

The ratchet wrench according to claim 1, wherein: the first ratchet mechanism comprises a first guide rod, a first spring, a first guide groove and a first ratchet; the first ratchet hinge is coupled to the movable wrench The first guiding groove is disposed in the first ratchet, and the first guiding rod is inserted into the first spring and disposed together in the first guiding slot;

The second ratchet mechanism includes a second guide rod, a second spring, a second guide slot and a second ratchet; the second ratchet hinge is coupled to the fixed trigger, and the second guide slot is disposed in the second ratchet. A second guide rod extends through the second spring and is disposed together in the second guide groove.

The ratchet wrench according to claim 2, wherein: the lower end surface of the movable wrench is provided with a threaded sliding portion; the upper end surface of the wrench is provided with a slide; the threaded sliding portion is embedded in the slide and the thread The sliding portion can slide in the slide.

The ratchet wrench according to claim 3, wherein: the wrench is further provided with a receiving groove, a shaft and a worm; the receiving groove is disposed at a lower end of the slideway in the wrench, and the capacity is The upper end of the slot is communicated with the slide rail; the shaft passes through the worm and is disposed together in the accommodating groove, and both ends of the shaft are fixedly connected with the opposite inner walls of the accommodating groove, respectively, and the worm Engaged with the threaded sliding portion of the movable wrench.

The ratchet wrench according to claim 4, wherein: the movable inner side of the movable wrench and the fixed side of the fixed wrench are two curved tooth faces, or the inner side of the movable trigger and the fixed trigger They are two parallel parallel tooth faces.