CN212170224U - Ratchet wrench - Google Patents

Abstract

The utility model provides a ratchet wrench belongs to spanner technical field. It has solved the unstable problem of ratchet rotation among the current ratchet spanner. This ratchet spanner, including pulling the body, the ratchet, the tooth piece, a spring, kicking block and clamp plate, the head of pulling the body has the holding hole, the ratchet is located the holding hole, the upper end of ratchet is passed through the snap ring and is connected on pulling the body, the lower extreme of ratchet has the turn-ups, the turn-ups leans on with the lower surface counterbalance of pulling the body, the ratchet can rotate for pulling the body, the outer peripheral face of ratchet has ratchet and two spigot surfaces, ratchet and two spigot surfaces all are located the holding hole, the ratchet is located the middle part of the outer peripheral face of ratchet, two spigot surfaces are located the upper and lower side of ratchet respectively, the spigot surface pastes with the inner wall in holding hole and. This structure is showing the stability that has improved the ratchet rotation.

Description

Ratchet wrench

Technical Field

The utility model belongs to the technical field of the spanner, a ratchet spanner is related to.

Background

When the ordinary wrench is used for wrenching the screw, the ordinary wrench is influenced by the position of the screw or the nut, and after the ordinary wrench is wrenched for a certain angle, the interference effect of other parts or objects can be caused, so that the wrench cannot be wrenched continuously, the wrench can only be taken down from the screw or the nut firstly, and then the wrench is sleeved on the screw or the nut again by adjusting the angle, so that the screw or the nut can be screwed or unscrewed repeatedly, and particularly under the condition that the rotatable angle is very small, the efficiency is very slow, and the operation is very complicated.

At present, the ratchet wrench in the existing market greatly improves the convenience of assembling and disassembling the screw or the nut, for example, the chinese patent network discloses a one-way ratchet wrench [ grant bulletin number: CN201537883U, comprising a driving head body, a ratchet wheel, a pawl, a shaft rod, an elastic component, a retaining ring and a cover plate, wherein the ratchet wheel is rotatably disposed in a first accommodating groove of the body, the ratchet wheel is supported by a ring edge to avoid downward separation, the pawl is disposed in a second accommodating groove, the pawl is engaged with the ratchet wheel, and the retaining ring is embedded in a retaining ring groove of the body and a concave ring groove of the ratchet wheel.

After the ratchet wheel is positioned in the first accommodating groove, the ratchet wheel is arranged on the peripheral surface of the ratchet wheel, one end of the ratchet wheel extends to one end of the ratchet wheel, the other end of the ratchet wheel extends to the other end of the ratchet wheel, all parts of the peripheral surface of the ratchet wheel, which are positioned in the first accommodating groove, are the ratchet wheels, the ratchet wheel only rotates through the retaining ring and the ring edge support, the rotation of the ratchet wheel is not stable enough, the ratchet wheel is easy to deviate in the working process of the ratchet wheel wrench, the engagement between the ratchet wheel and the pawl is not tight, the ratchet wheel of the ratchet wheel and teeth on the pawl are easy to wear.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a ratchet spanner, the utility model aims to solve the technical problem that: how to improve the stability of the ratchet wheel rotation.

The purpose of the utility model can be realized by the following technical proposal:

the ratchet wrench is characterized in that the lower end of the ratchet wheel is provided with a flanging which abuts against the lower surface of the wrench body, the ratchet wheel can rotate relative to the wrench body, the outer peripheral surface of the ratchet wheel is provided with a ratchet and two guide surfaces, the ratchet and the two guide surfaces are both located in the accommodating hole, the ratchet is located in the middle of the outer peripheral surface of the ratchet wheel, the two guide surfaces are respectively located on the upper side and the lower side of the ratchet, and the guide surfaces abut against the inner wall of the accommodating hole.

This ratchet passes through the snap ring and the turn-ups is installed on pulling the body, snap ring and turn-ups carry out spacing from top to bottom to the ratchet, snap ring and turn-ups play the effect of supporting to the rotation of ratchet, because existing ratchet has the spigot surface again on the outer peripheral face of ratchet, the area of contact of ratchet and holding downthehole wall has been improved in the setting of spigot surface, the structure that two spigot surfaces leaned on mutually to the inner wall in holding the hole further plays the effect of supporting to the rotation of ratchet, ratchet pivoted stability has further been improved, make ratchet and tooth piece meshing inseparable, the difficult wearing and tearing of tooth on the ratchet and the tooth piece, the life of ratchet spanner has been prolonged. In addition, the occupied area of the ratchets on the peripheral surface of the ratchet wheel is small, so that the processing amount of the ratchets is small, the processing and the manufacturing of the ratchet wheel are convenient, and the manufacturing cost of the ratchet wheel is reduced.

In foretell ratchet spanner, the storage tank that is linked together with the holding hole is seted up to the upper surface of spanner head, the cogged block is located the storage tank and cogged block and ratchet meshing, the step face has been seted up on the inner wall in holding hole, this ratchet spanner still includes the holding ring, the holding ring is located the step face, the ring channel has been seted up to the outer peripheral face of ratchet upper end, the snap ring is located the ring channel and the snap ring pastes mutually with the upper surface of holding ring and leans on, the clamp plate sets up in the storage tank and is located the top of cogged block, holding ring and clamp plate integrated into one piece. Through the setting of this structure, holding ring and clamp plate integrated into one piece's structure, the holding ring is fixed a position between snap ring and step face, and then makes the clamp plate be fixed a position on pulling the body, and the clamp plate is spacing to the tooth piece.

In the above ratchet wrench, the top block is located in the accommodating groove, the pressing plate is located above the top block, and the spring is located between the top block and the tooth block. Through the arrangement of the structure, the top block is limited in the accommodating groove by the pressing plate.

In the ratchet wrench, a mounting hole is formed in one side surface of the top block facing the tooth block, one end of the spring is located in the mounting hole, and the other end of the spring abuts against the tooth block. Through the arrangement of the structure, the installation of the spring is facilitated through the arrangement of the installation hole, and the spring is positioned.

In the ratchet wrench, the tooth block is in a long strip shape, one end face of the tooth block, facing the top block, is in a W shape, one end of the spring abuts against the end face, the upper end of the top block is connected with the handle, the upper surface of the wrench body is provided with the limiting groove, and the handle is located in the limiting groove. Through the setting of this structure, can stir the handle and make the kicking block at the storage tank internal rotation, and then drive the spring and swing in the storage tank, when the one end of spring leaned on with a tip of tooth piece, but the spanner forward rotation this moment, when the one end of spring leaned on with another tip of tooth piece counterbalance, but the spanner antiport this moment, consequently, this ratchet spanner is two-way ratchet spanner.

Compared with the prior art, the utility model discloses a ratchet spanner has following advantage: the ratchet wheel is installed on the wrench body through the clamping ring and the flanging, the clamping ring and the flanging limit the ratchet wheel up and down, the clamping ring and the flanging play a supporting role in rotating the ratchet wheel, the outer peripheral surface of the ratchet wheel is provided with the ratchet teeth and the guide surfaces, the contact area between the ratchet wheel and the inner wall of the accommodating hole is increased due to the arrangement of the guide surfaces, the structure, which is attached to the inner wall of the accommodating hole, of the two guide surfaces further plays a supporting role in rotating the ratchet wheel, the stability of rotation of the ratchet wheel is further improved, the ratchet wheel is meshed with the pawl tightly, the ratchet teeth on the ratchet wheel are not easy to wear and tear with the teeth on the tooth block, and the service life.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic sectional structure of the present invention.

Fig. 3 is a schematic diagram of the explosion structure of the present invention.

In the figure, 1, a wrench body; 1a, a containing hole; 1b, a containing groove; 1c, a step surface; 1d, limiting grooves; 2. a ratchet wheel; 21. flanging; 22. a ratchet; 23. a guide surface; 24. an annular groove; 3. a tooth block; 4. a spring; 5. a top block; 51. mounting holes; 52. a handle; 6. pressing a plate; 7. a snap ring; 8. a retaining ring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 3, the ratchet wrench includes a wrench body 1, a ratchet 2, a tooth block 3, a spring 4, a top block 5 and a pressing plate 6, wherein the head of the wrench body 1 has a receiving hole 1a, the ratchet 2 is located in the receiving hole 1a, the upper surface of the head of the wrench body 1 is provided with a receiving groove 1b communicated with the receiving hole 1a, the inner wall of the receiving hole 1a is provided with a step surface 1c, the ratchet wrench further includes a positioning ring 8, the positioning ring 8 is located on the step surface 1c, the outer peripheral surface of the upper end of the ratchet 2 is provided with an annular groove 24, the snap ring 7 is located in the annular groove 24, the snap ring 7 is attached to the upper surface of the positioning ring 8, the lower end of the ratchet 2 has a turned edge 21, the turned edge 21 is attached to the lower surface of the wrench body 1.

Further, the positioning ring 8 and the pressing plate 6 are integrally formed, the pressing plate 6 is arranged in the accommodating groove 1b and located above the tooth block 3, the tooth block 3 is located in the accommodating groove 1b, the tooth block 3 is meshed with the ratchet 2, the outer peripheral surface of the ratchet 2 is provided with a ratchet 22 and two guide surfaces 23, the ratchet 22 and the two guide surfaces 23 are both located in the accommodating hole 1a, the ratchet 22 is located in the middle of the outer peripheral surface of the ratchet 2, the two guide surfaces 23 are located on the upper side and the lower side of the ratchet 22 respectively, the guide surfaces 23 are attached to the inner wall of the accommodating hole 1a, the top block 5 is located in the accommodating groove 1b, the pressing plate 6 is located above the top block 5, the spring 4 is located between the top block 5 and the tooth block 3, a side surface, facing the tooth block 3, of the top block 5 is provided with an installation hole 51, one end of the spring 4 is located. The clamping ring 7 and the flanging 21 limit the ratchet wheel 2 up and down, the clamping ring 7 and the flanging 21 play a supporting role for the rotation of the ratchet wheel 2, the existing ratchets 22 and the guide surfaces 23 are arranged on the outer peripheral surface of the ratchet wheel 2, the contact area between the ratchet wheel 2 and the inner wall of the accommodating hole 1a is increased due to the arrangement of the guide surfaces 23, the structure that the two guide surfaces 23 are attached to the inner wall of the accommodating hole 1a further plays a supporting role for the rotation of the ratchet wheel 2, the rotation stability of the ratchet wheel 2 is further improved, the ratchet wheel 2 is meshed with the tooth block 3 tightly, the ratchets on the ratchet wheel 2 and the teeth on the tooth block 3 are not easy to wear, and the service life of the ratchet wrench is prolonged.

As shown in fig. 1 and 3, the tooth block 3 is in a long strip shape, one end surface of the tooth block 3 facing the top block 5 is in a W shape, one end of the spring 4 abuts against the end surface, the upper end of the top block 5 is connected with the handle 52, the upper surface of the wrench body 1 is provided with the limiting groove 1d, and the handle 52 is located in the limiting groove 1 d.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (5)

1. A ratchet wrench comprises a wrench body (1), a ratchet wheel (2), a tooth block (3), a spring (4), a top block (5) and a pressing plate (6), wherein the head of the wrench body (1) is provided with a containing hole (1a), the ratchet wheel (2) is positioned in the containing hole (1a), the upper end of the ratchet wheel (2) is connected to the wrench body (1) through a clamping ring (7), the ratchet wrench is characterized in that the lower end of the ratchet wheel (2) is provided with a flanging (21), the flanging (21) is abutted against the lower surface of the wrench body (1), the ratchet wheel (2) can rotate relative to the wrench body (1), the outer peripheral surface of the ratchet wheel (2) is provided with a ratchet wheel (22) and two guide surfaces (23), the ratchet wheel (22) and the two guide surfaces (23) are both positioned in the containing hole (1a), the ratchet wheel (22) is positioned in the middle of the outer peripheral surface of the ratchet wheel (2), and the two guide surfaces (23) are respectively positioned on the upper side and the lower side, the guide surface (23) is attached to the inner wall of the accommodating hole (1 a).

2. The ratchet wrench as claimed in claim 1, wherein the wrench body (1) has a receiving slot (1b) formed on the top surface of the head portion thereof and connected to the receiving hole (1a), the tooth block (3) is positioned in the containing groove (1b) and the tooth block (3) is meshed with the ratchet wheel (2), the inner wall of the containing hole (1a) is provided with a step surface (1c), the ratchet wrench also comprises a positioning ring (8), the positioning ring (8) is positioned on the step surface (1c), the peripheral surface of the upper end of the ratchet wheel (2) is provided with an annular groove (24), the snap ring (7) is positioned in the annular groove (24) and the snap ring (7) is attached to the upper surface of the positioning ring (8), the pressing plate (6) is arranged in the accommodating groove (1b) and is located above the tooth block (3), and the positioning ring (8) and the pressing plate (6) are integrally formed.

3. A ratchet wrench as claimed in claim 1, wherein said top block (5) is located in the receiving groove (1b), said pressing plate (6) is located above the top block (5), and said spring (4) is located between the top block (5) and the tooth block (3).

4. The ratchet wrench according to claim 3, wherein a mounting hole (51) is formed in one side surface of the top block (5) facing the tooth block (3), one end of the spring (4) is located in the mounting hole (51), and the other end of the spring abuts against the tooth block (3).

5. The ratchet wrench according to claim 4, wherein the tooth block (3) is long, an end surface of the tooth block (3) facing the top block (5) is W-shaped, one end of the spring (4) abuts against the end surface, a handle (52) is connected to the upper end of the top block (5), a limiting groove (1d) is formed in the upper surface of the wrench body (1), and the handle (52) is located in the limiting groove (1 d).

Images