CN115946071A - Ratchet wrench - Google Patents

Abstract

The invention belongs to the field of hardware tools, and particularly relates to a ratchet wrench which comprises a wrench head and a handle body, wherein ratchets are arranged on the side wall of the other side of the wrench head, a sliding groove axially penetrating through the wrench head is formed between a jaw and the ratchets, a sliding pin shaft is arranged at one end of the handle body and is arranged in the sliding groove, and a pawl mechanism is arranged in the handle body and can be matched with the ratchets. The wrench head has a simple structure, is convenient to use, can adjust the meshing state of the handle body and the wrench head by simply pressing the pressing handle, realizes the disassembly of parts only through simple harmonic motion of the handle body, and can be used in a limited force application space.

Description

Ratchet wrench

Technical Field

The invention belongs to the field of hardware tools, and particularly relates to a ratchet wrench.

Background

At present, when a nut at the end of a pipeline is disassembled, a wrench can not be normally screwed, because the obstacles are too many, the force application space of the wrench is seriously influenced, the operation of a common wrench is difficult, and the efficiency is low in reluctant construction.

Disclosure of Invention

In order to solve the problems, the invention provides the ratchet wrench which is simple in structure and convenient to use, the meshing state of the handle body and the wrench head can be adjusted by simply pressing and pressing the handle, the parts can be detached only through simple harmonic motion of the handle body, and the ratchet wrench can be used in a limited force application space.

The scheme provided by the invention is as follows: the utility model provides a ratchet wrench, includes wrench end and handle body, wrench end swing joint in handle body one end, the wrench end is the cylinder, and wrench end one side is seted up the axial and is run through keep silent. The jaw adopted by the invention is an open 9-angle jaw, and can be suitable for disassembling various pipes or nuts. The center of the jaw is not overlapped with the axis of the wrench head and is more inclined to one side.

The side wall of the other side of the wrench head is provided with a ratchet, and a sliding groove which axially penetrates through the wrench head is arranged between the jaw and the ratchet. The ratchet and the spout all set up in the one side relative with keeping silent, and the ratchet is used for cooperating the handle body to drive the wrench end and rotates, and the spout is used for cooperating the handle body to carry on spacingly, and both all set up in the one side relative of keeping silent, can not influence the centre gripping of keeping silent to the part after making the installation of the handle body.

And a sliding pin shaft is arranged at one end of the handle body and is arranged in the chute, and two ends of the sliding pin shaft are fixed with the handle body, so that one end of the handle body can slide in the chute through the sliding pin shaft. For stable connection, two sliding pins are generally provided.

A pawl mechanism is arranged in the handle body and can be matched with the ratchet. The pawl mechanism comprises a pawl, a return spring, a push rod, a rotating shaft and a pressing handle, wherein the pawl can be matched with the ratchet, the push rod is arranged in the handle body, one end of the push rod is connected with the pawl, the return spring is sleeved outside the push rod, the middle part of the pressing handle is movably connected with the rotating shaft and can rotate around the rotating shaft, one end of the pressing handle extends into the handle body and is connected with one end, far away from the pawl, of the push rod, and the other end of the pressing handle extends out of the handle body. The direction of the ejector rod is the same as that of the handle body, generally the direction of the ejector rod is opposite to the axis direction of the wrench head, and the direction of the rotating shaft is vertical to the direction of the ejector rod, so that the ejector rod can be driven to move in the direction of the ejector rod when the pressing handle rotates, namely towards the direction of the wrench head.

The invention applies force to the pressing handle from the outer side. The pressing handle is rotated to drive the ejector rod to move towards the wrench head, the pawl is moved to be clamped with the ratchet, the wrench head and the handle body are relatively fixed, the handle body can drive the wrench head to rotate for disassembly, and the reset spring is in a compressed state; after the outside application of force of cancellation, under reset spring's effect, the ejector pin resumes the original position, drives the pawl and breaks away from the ratchet, and wrench head and handle body do not connect with this moment, and the one end of handle body can slide in the spout, and the wrench head does not rotate for the relative position of adjustment handle body.

The sliding groove is arc-shaped, and the circle of the sliding groove is coaxial with the wrench head, so that the handle body can slide and rotate around the wrench head when the relative position is adjusted.

The ratchet used in the invention has an angle range of 140.6 degrees, the chute has an angle range of 200 degrees, and the ratchet can be matched with the pawl no matter the handle body rotates to any position.

Preferably, a solid wrench is arranged at one end of the handle body, which is far away from the wrench head, so that the handle can adapt to nuts with sizes different from the size of the turning head.

Compared with the prior art, the invention has the advantages that:

1. the wrench head has a simple structure, is convenient to use, can realize the engagement state of the adjusting handle body and the wrench head by simply pressing the pressing handle, can disassemble parts only by simple harmonic motion of the handle body, and can be used in a limited force application space.

2. The installation is convenient, the time and the labor are saved, the working efficiency of an operator is greatly improved, and the production is convenient.

Drawings

Fig. 1 is a structural view of the present application.

Fig. 2 is a side view of the present application.

In the figure, the wrench comprises a wrench head 1, a wrench head 2, a ratchet 3, a sliding pin shaft 4, a pawl 5, a return spring 6, a handle body 7, a counter bore screw 8, a push rod 9, a pin shaft 10, a rotating shaft 11, a pressing handle 12, a solid wrench 13, a jaw 14 and a sliding groove.

Detailed Description

The invention is further illustrated below with reference to the figures and examples.

An open spanner with a ratchet function comprises a spanner head 1, wherein the spanner head 1 is a cylinder, an open 9-angle jaw 13 is arranged on the upper side of the spanner head, and the opening faces the upper side. The side wall of the outer ring at the lower side of the wrench head 1 is provided with a ratchet 2 with an angle of 140.6 degrees, a circular arc-shaped sliding groove 14 is arranged between the jaw 13 and the ratchet 2, the circle of the sliding groove 14 is concentric with the wrench head 1, and the angle range is 200 degrees.

The upper end of the handle body 6 is provided with a groove, 2 sliding pin shafts 3 are arranged in the groove, the lower side of the wrench head 1 with the ratchet 2 extends into the groove, the sliding pin shafts 3 are installed, the sliding pin shafts 3 penetrate through the sliding grooves 14, and the two ends of each sliding pin shaft are fixed on the handle body 6 on the two sides of the groove, so that the sliding pin shafts 3 can slide in the sliding grooves 14 along the sliding grooves. After the connection of the handle body 6 is completed, the direction is towards the axis of the wrench head.

Inside the handle body 6, along the direction of the handle body be provided with ejector pin 8, pawl 4 is connected to the upper end of ejector pin 8, and when ejector pin 8 moved to spanner head 1 direction, pawl 4 was close to ratchet 2, can cooperate with ratchet 2, formed ratchet structure. The outer side of the ejector rod 8 is sleeved with a return spring 5, and when the ejector rod 8 moves towards the wrench head 1, the return spring 5 is compressed. The lower side of the handle body 6 is provided with a pressing handle 11, one end of the pressing handle 11 is groove-shaped, is sleeved on two sides of the handle body 1, penetrates through two sides through a pin shaft 9 and is connected with the lower end of the inner ejector rod 8. The other end that compresses tightly handle 11 stretches out to the outside of handle body 1 for press the operation, compress tightly handle 11 and rotate through the pivot 10 around running through the handle body, both ends form the lever, press the one end in outside, just upward movement of inboard one end drives ejector pin 8 and moves towards wrench head 1 direction, makes pawl 4 and ratchet 2 cooperate.

The lower extreme of handle body 6 can set up the solid wrench of equidimension not according to the selection of difference, widens and uses the sight. Cover plates can be arranged on the two sides of the base through counter bore screws 7, so that the appearance is improved, and the protection is performed.

The using method of the invention is as follows: the jaw 13 is sleeved on the nut, the pressing handle 11 is pressed downwards, the pressing handle 11 rotates to drive the ejector rod 8 to move towards the wrench head 1, the pawl 4 is occluded with the ratchet 2, the wrench head 1 and the handle body 6 are fixed relatively, and the wrench head 1 can be driven to rotate by exerting force to press the handle body 6, so that the nut is detached. After rotating a certain angle, loosening and pressing the handle 11, enabling the ejector rod 8 to move downwards under the action of the reset spring 5 to return to the original position, enabling the pawl 4 to be separated from the ratchet 2, enabling the wrench head 1 and the handle body 6 to be relatively unfixed at the moment, enabling the pressing handle body 6 not to drive the wrench head 1 to rotate, enabling the handle body to slide in the sliding groove 14 through the sliding pin shaft 3, returning the handle body to the original position where force is exerted in an idle mode, pressing the pressing handle 11 downwards, and performing secondary rotation disassembly. Through the reciprocating motion, the parts can be detached only through the simple harmonic motion of the handle body in the limited rotation space of the handle body.

Claims (9)

1. A ratchet wrench comprises a wrench head and a handle body, wherein the wrench head is movably connected with one end of the handle body, and is characterized in that the wrench head is a cylinder, one side of the wrench head is provided with a jaw which axially penetrates through, the side wall of the other side of the wrench head is provided with a ratchet, and a sliding groove which axially penetrates through the wrench head is arranged between the jaw and the ratchet;

one end of the handle body is provided with a sliding pin shaft which is arranged in the sliding groove and can slide in the sliding groove, a pawl mechanism is arranged in the handle body, and the ratchet extends into the handle body and can be matched with the pawl mechanism.

2. The ratchet wrench of claim 1, wherein the pawl mechanism comprises a pawl, a return spring, a push rod, a rotating shaft and a pressing handle, the pawl is matched with the ratchet, the push rod is arranged in the handle body, one end of the push rod is connected with the pawl, and the return spring is sleeved outside the push rod;

the middle part of the pressing handle is movably connected with the rotating shaft and can rotate around the rotating shaft, one end of the pressing handle is connected with one end, far away from the pawl, of the ejector rod through a pin shaft, and the other end of the pressing handle extends out of the handle body.

3. The ratchet wrench of claim 2, wherein the axis of rotation is oriented perpendicular to the ram.

4. The ratchet wrench of claim 3, wherein the return spring is in a compressed state when the pawl engages the ratchet teeth; when the pawl is disengaged from the ratchet, the return spring is in a relaxed state.

5. The ratchet wrench of claim 1, wherein the slot is arcuate, the slot being located on a circle coaxial with the wrench head.

6. The ratchet wrench of claim 5, wherein the slot is angled in a range of 200 °.

7. The ratchet wrench of claim 1, wherein the ratchet teeth are angularly oriented in a range of 140.6 °.

8. The ratchet wrench of claim 1, wherein the jaws are open 9-angle jaws.

9. The ratchet wrench of claim 1, wherein a solid wrench is disposed at an end of the handle body distal from the wrench head.

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