CN212146167U

CN212146167U - Ratchet wrench

Info

Publication number: CN212146167U
Application number: CN202020412996.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Shenzhen Topband Co Ltd
Current assignee: Shenzhen Topband Co Ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-12-15
Anticipated expiration: 2030-03-26

Abstract

The utility model relates to a ratchet wrench, include: the rotary handle comprises a handle body and a ratchet wheel component which can penetrate out of the handle body; the handle body comprises a first end and a second end; the ratchet component comprises an inner gear ring which is arranged in the handle body and is close to the first end, and an output shaft which is arranged on one side of the inner gear ring and penetrates out of the handle body; the reversing mechanism comprises a reversing component capable of moving back and forth between the first end and the second end of the handle body, and the reversing component is arranged on the handle body and matched with the inner gear ring to convert the rotation direction of the inner gear ring under the pushing of external force. The ratchet wrench has the advantages of simple structure and convenient and quick single-hand operation.

Description

Ratchet wrench

Technical Field

The present invention relates to wrenches, and more particularly, to a ratchet wrench.

Background

Related art ratchet wrenches typically include a ratchet mechanism that requires two pawls to rotate in the ratchet mechanism when reversing direction, typically requiring two hands to assist operation, which is generally difficult to operate with one hand.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an improved ratchet wrench.

The utility model provides a technical scheme that its technical problem adopted is: constructing a ratchet wrench comprising:

the rotary handle comprises a handle body and a ratchet wheel component which can penetrate out of the handle body; the handle body comprises a first end and a second end; the ratchet component comprises an inner gear ring which is arranged in the handle body and is close to the first end, and an output shaft which is arranged on one side of the inner gear ring and penetrates out of the handle body;

the reversing mechanism comprises a reversing component capable of moving back and forth between the first end and the second end of the handle body, and the reversing component is arranged on the handle body and matched with the inner gear ring to convert the rotation direction of the inner gear ring under the pushing of external force.

Preferably, the reversing assembly comprises a connecting sliding seat which is slidably arranged, and a first pawl and a second pawl which are arranged on the connecting sliding seat at intervals;

when the connecting sliding seat moves towards the first end of the handle body, the first pawl is meshed with the inner gear ring, and the rotating handle is driven by external force to rotate only towards a first direction;

when the connecting sliding seat moves towards the second end of the handle body, the second pawl is meshed with the inner gear ring, and the rotating handle only rotates towards the second direction under the drive of external force.

Preferably, a first mounting groove for mounting the first pawl is formed in one side of the connecting sliding seat;

a first rotating shaft which is rotatably connected with the first pawl is arranged in the first mounting groove;

a second mounting groove for mounting the second pawl is formed in the other side of the connecting sliding seat; and a second rotating shaft which is rotatably connected with the second pawl is arranged in the second mounting groove.

Preferably, the first rotating shaft is provided with a first elastic member elastically abutting against the first pawl.

Preferably, the second rotating shaft is provided with a second elastic member elastically abutting against the second pawl.

Preferably, the reversing mechanism further comprises a push rod, and the push rod is arranged on the handle body and detachably connected with the connecting sliding seat;

the push rod comprises a rod body and a push button which is arranged on the rod body and can penetrate out of the rotary handle to drive the rod body to move.

Preferably, the rod body is provided with a connecting hole connected with the connecting sliding seat;

and the connecting sliding seat is provided with a connecting convex part inserted into the connecting hole.

Preferably, a fixing cover which is matched with the inner gear ring and can fix the connecting sliding seat is further arranged in the handle body;

the fixed cover is provided with a through hole for the connection convex part to pass through, and the through hole is positioned in the motion direction of the connection sliding seat and is strip-shaped so as to guide the connection sliding seat in a sliding manner.

Preferably, the handle body is provided with an accommodating groove for accommodating the ratchet member.

Preferably, a guide groove for installing and guiding the push rod is arranged in the handle body;

the rotating handle further comprises a cover body detachably arranged on the handle body to cover the guide groove.

Implement the utility model discloses a ratchet spanner has following beneficial effect: when the ratchet wrench is used, the rotating handle can be held by one hand, and the fingers of the hand can apply external force to the reversing component arranged in the inner gear ring of the ratchet component to push the reversing component to reciprocate between the first end and the second end of the handle body so as to convert the rotating direction of the inner gear ring. The ratchet wrench has the advantages of simple structure and convenient and quick single-hand operation.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

FIG. 1 is a schematic structural view of a first embodiment of the ratchet wrench of the present invention;

FIG. 2 is a cross-sectional view of the ratchet wrench of FIG. 1;

FIG. 3 is an exploded view of the ratchet wrench of FIG. 1;

FIG. 4 is a partial schematic structural view of the ratchet wrench of FIG. 1;

FIG. 5 is a schematic structural view of a reversing mechanism of the ratchet wrench of FIG. 3;

FIG. 6 is a schematic view of a reversing assembly of the reversing mechanism of FIG. 5;

FIG. 7 is a schematic structural view of a second embodiment of the ratchet wrench of the present invention;

fig. 8 is an exploded view of the ratchet wrench of fig. 7.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 and 2 show a ratchet wrench according to a first embodiment of the present invention. The ratchet wrench may be used as a hand tool that may be used to tighten or loosen a fastener, such as a screw. Of course, it will be appreciated that in other embodiments, it may not be limited to use for tightening or loosening screws. The ratchet wrench has the advantages of simple structure and convenient and quick single-hand operation.

Further, in the present embodiment, the ratchet wrench may include a rotating handle 10, and a reversing mechanism 20. The twist grip 10 is intended to be held by a single hand of a user and can be turned to tighten or loosen the screw. The reversing mechanism 20 can be disposed on the rotating handle 10, which can be used for reversing.

As shown in fig. 2 and 3, in the present embodiment, the rotating handle 10 may include a handle body 11, a ratchet member 12, a cover 13, and a fixing cover 14. The handle body 11 is intended to be held by a user. The ratchet member 12 can be extended out of the handle body 11, and can be driven to rotate by the handle body 11, and then can be connected with a fastener to perform a screwing or unscrewing operation. The cover 13 can be disposed on the handle 11 and can be detachably connected to the handle body 11. The fixing cover 14 can be disposed in the handle body 11, and can be used for fixing the reversing mechanism 20.

Further, in the present embodiment, the handle body 11 may include a rotating portion 11a and a holding portion 11 b. The rotating portion 11a may have a cylindrical shape, and the holding portion 11b may have a bar shape, which may be disposed on a sidewall of the rotating portion 11 a. The radial dimension of the rotating portion 11a is larger than the lateral dimension of the grip portion 11 b. The handle body 11 may include a first end and a second end, the first end is an end provided with the rotating portion 11a, and the second end is an end of the holding portion 11b away from the rotating portion 11 a. The handle body 11 may be provided with a guide groove 111, and the guide groove 111 may be provided on the holding portion 11b, which may be a strip-shaped groove, and may be used to guide the movement of the reversing mechanism. The handle 11 can also be provided with a containing groove 112; the receiving groove 112 may be located inside the rotating portion 11a, and may be disposed in communication with the guiding groove 111, which may be used to receive the ratchet member 12.

Further, in the present embodiment, the ratchet member 12 may include an inner gear ring 121 and an output shaft 122. The ring gear 121 may be disposed in the handle body 11 and disposed near the first end of the handle body 11, and specifically the ring gear 121 may be disposed in the accommodating groove 112. The output shaft 122 can be disposed on one side of the ring gear 121, which is disposed through the handle body 11, and can be used to screw or unscrew a fastener. The output shaft 122 may be integrally formed with the ring gear 121, and specifically, in some embodiments, the output shaft 122 may be integrally formed with the ring gear 121 by injection molding or casting.

Further, in the present embodiment, the shape of the cover 13 can be adapted to the shape of the handle body 11. The cover 13 can be detachably connected to the handle body 11, and can be used to cover the guiding groove 111, and in this embodiment, it can also cover the receiving groove 112. The cover 13 may include a first cover portion 131 and a second cover portion 132; the first covering portion 131 may be circular and may cover the accommodating groove 112, and the second covering portion 132 may be rectangular and may cover the guide groove 111. The cover 13 may also be provided with a guide hole 1321; the guide hole 1321 may facilitate the user's operation of the reversing mechanism 20.

Further, in the present embodiment, the fixing cover 14 may be disposed in the accommodating groove 112, which may be located on the inner ring gear 121, and may be matched with the inner ring gear 121, which may be used to connect and fix the reversing mechanism 20. The fixing cover 14 may have a through hole 141, and the through hole 141 may have a bar shape and may be used to connect to the reversing mechanism 20.

Further, in the present embodiment, the reversing mechanism 20 may include a push rod 21 and a reversing assembly 22. The push rod 21 can be disposed in the guide groove 111, and can be detachably connected to the reversing component 22, which can be used to push the reversing component 22 to reverse. It will be appreciated that in other embodiments, the push rod 21 may be omitted. The reversing component 22 can be disposed on the handle body 11, specifically connected to the fixing cover 14, and partially disposed in the inner gear ring 121, and can be engaged with the inner gear ring 121 and convert the rotation direction of the inner gear ring 121 under the pushing of an external force.

As shown in fig. 2 to 5, in some embodiments, the push rod 21 may include a rod 211 and a push button 212. The rod 211 can be disposed in the guiding groove 111, and one end of the rod can extend toward the fixing cover 14 and be detachably connected to the reversing component 22. The push button 212 may be disposed on the rod 211, and may be integrally formed with the rod 211 by injection molding or casting, and may be disposed to penetrate through the rotating handle 10, specifically, may penetrate through the guiding hole 1321 of the cover 13, and may slide in the guiding hole 1321, so as to drive the rod 211 to move, thereby pushing the reversing component 22 to reverse. In this embodiment, the rod 211 is provided with a connection hole 2111; the connecting hole 211 may be disposed at an end of the rod 211 close to the first end of the handle body 11. The coupling hole 2111 may be used to detachably couple with the coupling slider 211.

As shown in fig. 3 and 6, in the present embodiment, the reversing assembly 22 may include a connecting sliding seat 221, a first pawl 222, a second pawl 223, a first elastic member 224, and a second elastic member 225. The connecting sliding seat 221 can penetrate out of the fixing cover 14 to be connected with the rod 211, and can be slidably disposed on the fixing cover 14, and a part of the connecting sliding seat can be disposed in the inner gear ring 121. The connection sliding seat 221 may be provided with a connection protrusion 2211, and the connection protrusion 2211 may be inserted into the connection hole 2111 through the through hole 141 of the fixing cover 14 to be connected with the rod 211. A first mounting groove 2212 may be formed at one side of the connecting sliding seat 221, the first mounting groove 2212 may be used for mounting the first pawl 222, and a first rotating shaft 2213 may be disposed in the first mounting groove 2212; the first rotating shaft 2213 may be disposed in a longitudinal direction, and may be connected to the first pawl 222 to facilitate rotation of the first pawl 222. The other side of the connecting sliding seat 221 may be provided with a second mounting groove 2214, the second mounting groove 2214 may be used for mounting the second pawl 223, and a second rotating shaft may be provided in the second mounting groove 2214, the second rotating shaft may be arranged in the longitudinal direction, and may be connected with the second pawl 223 to facilitate the rotation of the second pawl 223. The first pawl 222 and the second pawl 223 may be spaced apart from each other on the connecting sliding seat 221, and may be correspondingly mounted in the first mounting groove 2212 and the second mounting groove 2214 and correspondingly connected to the first rotating shaft 2213 and the second rotating shaft. The engaging portions of the first pawl 222 and the second pawl 223 are disposed opposite to each other, so that the direction change can be performed. In this embodiment, the first elastic member 224 is disposed on the first rotating shaft 2213; the first elastic member 224 is a spring, which is sleeved on the first rotating shaft 2213 and located between the first pawl 222 and the bottom wall of the first mounting groove 2212 to elastically abut against the first pawl 222. A second elastic piece 225 is arranged on the second rotating shaft; the second elastic member 225 can be sleeved on the second shaft and is located between the second pawl 223 and the bottom wall of the second mounting groove 2214 so as to elastically abut against the second pawl 223.

When the ratchet wrench is used, the rotating handle 10 can be held by one hand, and the thumb of the hand pushes the push button 212 to move towards the first end of the handle body 11, so as to drive the connecting sliding seat 221 to move towards the first end of the handle body 11, the first pawl 222 is engaged with the inner gear ring 121, and at this time, the rotating handle 10 can only rotate towards the first direction under the driving of an external force, and is locked in the second direction. The first direction may be a clockwise direction, and the second direction may be a counterclockwise direction, and it should be noted that, in some other embodiments, the first direction may not be limited to the clockwise direction, and the second direction is not limited to the counterclockwise direction. The thumb of the hand pushes the push button 212 to move towards the second end of the handle body 11, so as to drive the connecting sliding seat 221 to move towards the second end of the handle body 11, the second pawl 223 is engaged with the inner gear ring 121, the rotating handle 10 can be driven by external force to rotate only in the second direction, and the first direction is locked.

Fig. 7 and 8 show a second embodiment of the ratchet wrench of the present invention. It differs from the first embodiment in that the push rod 21, the guide groove 111, and the cover 13 can be omitted. The rotating handle 10 may further include a top cover 15 covering the receiving groove 112, and the top cover 15 may be provided with a through hole 151. The connection protrusion 2211 of the connection sliding seat 221 may pass through the through hole 141 of the fixed cover 14 and pass through the through hole 151. When the connecting sliding seat is used, the rotating handle 10 can be held by one hand, and the connecting convex part 2211 is pushed by the fingers of the hand, so that the connecting sliding seat 221 is driven to slide, the first pawl 222 and the second pawl 223 can be switched, and reversing can be realized.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A ratchet wrench, comprising:

the rotary handle (10) comprises a handle body (11) and a ratchet wheel component (12) which can penetrate out of the handle body (11); the handle body (11) comprises a first end and a second end; the ratchet component (12) comprises an inner gear ring (121) which is arranged in the handle body (11) and is close to the first end, and an output shaft (122) which is arranged on one side of the inner gear ring (121) and penetrates out of the handle body (11);

the reversing mechanism (20) comprises a reversing component (22) capable of moving back and forth between the first end and the second end of the handle body (11), and the reversing component (22) is arranged on the handle body (11) and matched with the inner gear ring (121) to convert the rotation direction of the inner gear ring (121) under the pushing of external force.

2. The ratchet wrench of claim 1, wherein the reversing assembly (22) includes a connecting slide block (221) slidably disposed, a first pawl (222) and a second pawl (223) spaced apart from the connecting slide block (221);

when the connecting sliding seat (221) moves towards the first end of the handle body (11), the first pawl (222) is meshed with the inner gear ring (121), and the rotating handle (10) is driven by external force to rotate only towards a first direction;

when the connecting sliding seat (221) moves towards the second end of the handle body (11), the second pawl (223) is meshed with the inner gear ring (121), and the rotating handle (10) only rotates towards the second direction under the drive of external force.

3. The ratchet wrench according to claim 2, wherein a first mounting groove (2212) for mounting the first pawl (222) is formed at one side of the connecting sliding seat (221);

a first rotating shaft (2213) which is rotatably connected with the first pawl (222) is arranged in the first mounting groove (2212);

a second mounting groove (2214) for mounting the second pawl (223) is formed in the other side of the connecting sliding seat (221); a second rotating shaft rotatably connected with the second pawl (223) is arranged in the second mounting groove (2214).

4. The ratchet wrench according to claim 3, wherein the first shaft (2213) is provided with a first elastic member (224) elastically abutting against the first pawl (222).

5. The ratchet wrench according to claim 3, wherein the second rotary shaft is provided with a second elastic member (225) elastically abutting against the second pawl (223).

6. The ratchet wrench according to claim 2, wherein the reversing mechanism (20) further comprises a push rod (21), the push rod (21) being disposed on the handle body (11) and detachably connected to the connecting sliding seat (221);

the push rod (21) comprises a rod body (211) and a push button (212) which is arranged on the rod body (211) and can penetrate out of the rotary handle (10) to drive the rod body (211) to move.

7. The ratchet wrench according to claim 6, wherein the shaft body (211) is provided with a connecting hole (2111) connected to the connecting slider (221);

the connecting sliding seat (221) is provided with a connecting convex part (2211) inserted into the connecting hole (2111).

8. The ratchet wrench as claimed in claim 7, wherein a fixing cover (14) which is engaged with the ring gear (121) and can fix the connecting sliding seat (221) is further provided in the handle body (11);

the fixing cover (14) is provided with a via hole (141) for the connecting convex part (2211) to pass through, and the via hole (141) is located in the moving direction of the connecting sliding seat (221) and is in a strip shape so as to provide sliding guide for the connecting sliding seat (221).

9. The ratchet wrench according to claim 1, wherein the handle body (11) is provided with a receiving groove (112) for receiving the ratchet member (12).

10. The ratchet wrench according to claim 6, wherein the handle body (11) has a guide groove (111) provided therein for the push rod (21) to be mounted and for guiding the push rod (21);

the rotating handle (10) further comprises a cover body (13) which is detachably arranged on the handle body (11) and covers the guide groove (111).