CN220660679U - Ratchet wrench capable of rotating in narrow space - Google Patents
Ratchet wrench capable of rotating in narrow space Download PDFInfo
- Publication number
- CN220660679U CN220660679U CN202322153566.5U CN202322153566U CN220660679U CN 220660679 U CN220660679 U CN 220660679U CN 202322153566 U CN202322153566 U CN 202322153566U CN 220660679 U CN220660679 U CN 220660679U
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- CN
- China
- Prior art keywords
- pawl
- ratchet
- rotating
- spring
- hole
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 claims description 41
- 239000010959 steel Substances 0.000 claims description 41
- 210000004907 gland Anatomy 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Abstract
The utility model belongs to the technical field of manual hardware tools, and particularly relates to a ratchet wrench capable of rotating in a narrow space, wherein one end of a wrench body is provided with a mounting hole, the inner wall of the mounting hole is provided with an inner gear ring, the ratchet wrench further comprises a rotary joint, the rotary joint comprises a rotary part and a joint part, the rotary part is arranged in the mounting hole and matched with the inner gear ring, and the joint part extends out of the mounting hole; the middle part of the rotating part is provided with a pawl cavity, the middle part of the pawl cavity is provided with a baffle plate, pawl cavities at two sides of the baffle plate are respectively provided with a pawl, ratchet teeth of the two pawls face the outer side of the rotating part and are matched with the annular gear, the middle part of the baffle plate is provided with a gap, and a spring passes through the gap and is elastically connected with the two pawls; the utility model has reasonable structure, when the ratchet teeth of one pawl are meshed with the inner gear ring, the ratchet teeth of the other pawl are positioned between the two teeth of the inner gear ring. The minimum driving rotation angle is changed into one half of the original rotation angle through the alternate meshing work of the two pawls, so that the wrench can be used in a narrow space.
Description
Technical Field
The utility model belongs to the technical field of manual hardware tools, and particularly relates to a ratchet wrench capable of rotating in a narrow space.
Background
The existing ratchet wrench has the structure that through the cooperation of ratchet pawls, a reciprocating rotating handle can drive a sleeve to rotate clockwise or anticlockwise, the minimum reciprocating rotating angle is generally determined by the number of teeth of a ratchet, and when the using space is narrow, a ratchet tool cannot be used.
Disclosure of Invention
According to the ratchet wrench capable of rotating in the narrow space, the two pawls are alternately meshed to work, the minimum driving rotation angle is changed into one half of the original driving rotation angle, the wrench can be used in the narrow space, and the quick assembly and disassembly of all parts are realized through the cooperation of the rotary switch, the steel balls, the steel ball limiting holes and the quick-disassembly springs, so that the ratchet wrench is convenient to maintain and repair.
The scheme provided by the utility model is as follows:
the utility model provides a ratchet spanner that can rotate in narrow and small space, includes the spanner body, spanner body one end is equipped with the mounting hole, the mounting hole inner wall is equipped with the ring gear, still includes rotary joint, rotary joint locates in the mounting hole to cooperate with the ring gear, rotary joint includes rotary part and joint portion, rotary part locates in the mounting hole and cooperates with the ring gear, and joint portion stretches out outside the mounting hole for with the supporting telescopic joint of spanner.
The middle part of the rotating part is provided with a hollow pawl cavity, the middle position of the pawl cavity is provided with a baffle plate, the baffle plate divides the pawl cavity into two parts with the same size and shape, each of the pawl cavities which are equally divided on two sides of the baffle plate is provided with a pawl, ratchets of the two pawls face to the outer side of the rotating part and are matched with the annular gear, the baffle plate is discontinuous, the middle part is provided with a gap which is communicated with two sides, and the spring passes through the gap to be elastically connected with the two pawls; when the ratchet teeth of one pawl are engaged with the ring gear, the ratchet teeth of the other pawl are located between the two teeth of the ring gear.
When the ratchet teeth of one pawl are meshed with the inner gear ring, the ratchet teeth of the other pawl are positioned between the two teeth of the inner gear ring, so that the two pawls are alternately meshed with the inner gear ring, and the effect of reducing the minimum angle of the reciprocating motion of the wrench by half is achieved. The baffle plate provides the rotation limiting function for the two pawls, and the spring simultaneously provides reciprocating elasticity for the two pawls, so that the pawl function is realized.
The ratchet teeth of the two pawls are identical to the inner gear ring in modulus, so that meshing is completed, and the modulus and the tooth number of the two pawls are identical.
Two counter bores are formed in the rotary part at corresponding positions of the two pawls and are used for installing pin shafts of the two pawls.
More preferably, the pawl is a bidirectional pawl, the two sides of the pawl are provided with ratchets with the same modulus and tooth number, and when one side of the ratchets is meshed with the annular gear, the other side of the ratchets is separated from the annular gear; one side of the pawl, which is contacted with the spring, is arc-shaped, when the spring is switched from one end of the pawl to the other end, the ratchet meshed with the annular gear can be switched to the other side, and the pawl end meshed with the annular gear can be switched by moving the connection position of the spring and the inner side of the pawl, so that the rotation reversing of the wrench is realized.
The reversing switch is arranged in the rotating part, the extending part is a cylinder and penetrates through the pawl cavity through the baffle plate gap, a spring through hole is formed in the reversing switch, the spring penetrates through the spring through hole to be respectively in contact connection with pawls on two sides, when the reversing switch is rotated, the spring can be driven to rotate together, the contact point of the spring and the pawl is rotated to the other end from one end of the pawl, and reversing is completed.
Preferably, the reversing switch penetrates through the rotating part and stretches into the connecting part, a stepped counter bore is formed in the part, stretching into the connecting part, of the reversing switch, a steel ball limiting hole is formed in the mounting part, and steel balls are mounted in the stepped counter bore and the steel ball limiting hole. The stepped counter bores contain parts with different depths, and the heights of the parts of the steel balls exposed out of the steel ball limiting holes can be controlled by the steps of the stepped counter bores, so that the stepped counter bores can be used for locking a matched wrench sleeve; meanwhile, as the steel balls are locked between the step counter bore and the steel ball limiting hole, the steel balls are also used as connecting pieces of the reversing switch and the rotary switch and used for fixing the reversing switch. The deepest part in the stepped counter bore can completely contain the steel balls, so that the steel balls are separated from the steel ball limiting holes and are not exposed, and the reversing switch is separated from the connecting part.
Preferably, the outer side of the rotary switch is sleeved with a quick-release spring; the rotary part center is equipped with the quick detach through-hole, rotary switch passes in the quick detach through-hole stretches into connecting portion, the quick detach through-hole is echelonment, cooperatees with the quick detach spring, and when the steel ball falls into the deepest position in the ladder counter bore completely, the steel ball can break away from the spacing of the spacing hole of steel ball this moment, and rotary switch breaks away from connecting portion under the elasticity of quick detach spring and pops out, realizes the quick detach function.
The part of the reversing switch which does not extend in the utility model is provided with a knob, so that the reversing switch is convenient to rotate.
Better, the two ends of the spring are also provided with the pressing covers, so that the spring is contacted with the inner sides of the two pawls through the pressing covers, the pressing covers can slide on the inner sides of the pawls, the moving resistance is reduced, and the reversing is convenient.
Compared with the prior art, the utility model has the advantages that:
1. the minimum driving rotation angle is changed into one half of the original rotation angle through the alternate meshing work of the two pawls, so that the wrench can be used in a narrow space.
2. Through the cooperation of rotary switch, steel ball spacing hole, quick detach spring, realize the quick assembly disassembly of each part, convenient maintenance.
3. Compact structure, simple to operate reduces manufacturing cost.
Drawings
Fig. 1 is an exploded view of the structure of the present application.
Fig. 2 is a structural view of a rotary joint.
Fig. 3 is a cross-sectional view of a swivel joint.
Fig. 4 is a diagram of a detent mechanism.
Fig. 5 is a block diagram of a reversing switch.
Fig. 6 is a diagram of the body structure of the wrench.
In the figure, 1, a reversing switch, 2, a spanner body, 3, a quick-release spring, 4, a gland, 5, a pawl, 6, a rotary joint, 7, a sealing cover, 8, a steel ball, 9, a pawl spring, 10, a pin roll, 11, a rotary part, 12, a partition plate, 13, a joint part, 14, a quick-release through hole, 15, a pin roll counter bore, 16, a steel ball limiting hole, 17, a ratchet, 18, a knob, 19, a through hole, 20, a step counter bore, 21, an annular gear, 22 and a mounting hole.
Detailed Description
The utility model is further illustrated by the following examples in connection with the accompanying drawings.
As shown in the figure: the utility model provides a ratchet spanner that can rotate in narrow and small space, includes spanner body 2, and spanner body 2 can refer to prior art's ratchet spanner, and one end is equipped with circular through-hole form mounting hole 22, and the other end is the handle portion. The inner wall of the mounting hole 22 is provided with a whole ring gear 21.
The rotary joint 6 is further included, the rotary joint 6 comprises a rotary part 11 and a joint part 13, and the rotary part 11 is cylindrical and is installed in the installation hole 22. The middle part is equipped with hollow pawl chamber, pawl chamber middle position is equipped with baffle 12, baffle 12 has equally divided into two parts of size shape with pawl chamber, respectively be equipped with a pawl 5 in the pawl chamber that baffle 12 both sides were halved, the ratchet 17 of two pawls 5 all is towards the rotation part 11 outside, baffle 12 is discontinuous, the gap intercommunication both sides have been seted up in the centre, pawl spring 9 passes the gap installation, a gland 4 is respectively installed at pawl spring 9 both ends, make gland 4 and the inboard elastic connection of two pawls 5.
The two pawls 5 are identical in shape and are arranged and installed in pawl cavities through pin shafts 10, and pin shaft counter bores 15 are formed in corresponding positions of the rotating parts 11 and are used for installation. When the installation pawls 5 are arranged, the installation angles of the two pawls 5 are adjusted through adjusting the positions of the pin shafts 10, so that the two pawls 5 are in staggered engagement with the annular gear 21, namely, when the ratchet 17 of one pawl 5 is engaged with the annular gear 21, the ratchet 17 of the other pawl 5 is positioned between the two tooth shapes of the annular gear 21, and the two pawls 5 are alternately engaged with the annular gear 21.
The two pawls 5 are two-way pawls, the two sides of each pawl 5 are provided with ratchets 17 with the same modulus and tooth number, and when one side of each ratchet 17 is meshed with the annular gear 21, the other side of each ratchet 17 is separated from the annular gear 21; one side of the pawl 5, which is contacted with the pawl spring 9, is arc-shaped, when the pawl spring 9 is switched from one end of the pawl to the other end, the ratchet 17 meshed with the annular gear 21 can be switched to the other side, and the pawl end meshed with the annular gear 1 can be switched by moving the connection position of the pawl spring 9 and the inner side of the pawl 52, so that the rotation reversing of the wrench is realized. Reference is made to the prior art bi-directional detent arrangements.
The joint part 13 is in a cuboid shape, a round steel ball limiting hole 16 is formed in the side face of the joint part, the steel ball 8 is arranged in the joint part, and the diameter of the steel ball limiting hole 16 is smaller than that of the steel ball 8. The joint part 13 is used for connecting a matched wrench socket, the reversing switch 1 is pressed, the steel balls 8 move in different heights of the stepped counter bores 20, the exposed height of the steel balls 8 can be controlled, and the socket is disassembled and assembled.
The joint portion 13 and the rotating portion 11 are integrally formed and located on the same axis. The quick release through hole 14 is located at the axis position, penetrates from the rotating part 11 to the joint part 13, and is communicated with the steel ball limiting hole 16. The quick release through hole 14 is stepped, and the inside diameter of the portion inside the joint portion 13 is smaller than the portion inside the rotating portion 11.
The reversing switch 1 includes a knob 18 portion at one end and a cylindrical portion extending into the quick release through hole 14. The diameter of the cylindrical part is matched with the inner diameter of the quick release through hole 14, a spring through hole 19 is formed in the upper part, and the pawl spring 9 penetrates through the spring through hole 19 to be installed. The part extending into the joint part 13 is provided with a stepped counter bore 20, the position of the stepped counter bore 20 corresponds to the steel ball limiting hole 16, and the stepped counter bore 20 contains parts with different depths, and the height of the part of the steel ball 8 exposed out of the steel ball limiting hole 16 can be controlled due to the stepped shape of the stepped counter bore 20, so the stepped counter bore can be used for locking with a matched wrench sleeve; the deepest part of the stepped counter bore 20 can completely contain the steel ball 8, so that the steel ball 8 is separated from the steel ball limiting hole 16 and is not exposed, and the reversing switch 1 is separated from the joint part 13. The quick release spring 3 is sleeved outside the cylinder, and the quick release spring 3 is sleeved on the part extending into the joint part 13 only, and the quick release spring 3 can be limited because the diameter of the cylinder part in the upper rotating part 11 is larger than that of the part in the lower joint part 13. When the steel ball 8 is positioned at the deepest part of the stepped counter bore 20, the reversing switch 1 is separated from the joint part 13, and the reversing switch 1 is ejected out through the elasticity of the quick release spring 3, so that quick release is realized.
The rotary joint 6 is mounted in a limited manner by using a sealing cover 7 at the lower side of the mounting hole 22.
When the wrench is used, the reversing switch 1 is pressed, the exposed height of the steel balls 8 is reduced, the wrench sleeve to be used is installed on the joint part 13, the reversing switch is reset 1, the steel balls 8 are reset, and the sleeve installation is completed. The wrench body 2 can be used by turning. Since the two pawls 5 are alternately engaged with the ring gear 21, the minimum driving angle becomes one half of the original one, so that the wrench can be used in a narrow space. When reversing is needed, the knob 18 is rotated to drive the pawl spring 9 to rotate, so that the pressing covers 4 on two sides move from one end of the pawl 5 to the other end, and the engagement between the pawl 5 and the annular gear 21 is switched from one end to the other end, thereby completing reversing.
When the reversing switch 1 needs to be disassembled for maintenance, the deepest part of the stepped counter bore 20 is aligned with the steel ball 8 by forcibly pressing down, so that the steel ball 8 falls into the stepped counter bore 20 completely and no steel ball limiting hole 16 is exposed, the reversing switch 1 is disconnected with the joint part 13, and the reversing switch 1 is ejected out under the elasticity of the quick-release spring 3 to complete quick-release.
Claims (8)
1. The ratchet wrench capable of rotating in a narrow space comprises a wrench body, wherein one end of the wrench body is provided with a mounting hole, an inner gear ring is arranged on the inner wall of the mounting hole, and the ratchet wrench further comprises a rotary joint which is arranged in the mounting hole and matched with the inner gear ring;
the middle part of the rotating part is provided with a pawl cavity, the middle part of the pawl cavity is provided with a baffle plate, pawl cavities at two sides of the baffle plate are respectively provided with a pawl, ratchet teeth of the two pawls face the outer side of the rotating part and are matched with the annular gear, the middle part of the baffle plate is provided with a gap, and a spring passes through the gap and is elastically connected with the two pawls;
when the ratchet teeth of one pawl are engaged with the ring gear, the ratchet teeth of the other pawl are located between the two teeth of the ring gear.
2. The ratchet wrench of claim 1, wherein the ratchet teeth of the two pawls are identical in modulus to the ring gear.
3. The ratchet wrench capable of rotating in a small space according to claim 1, wherein the pawl is a bidirectional pawl, ratchet teeth with the same modulus and number of teeth are arranged on two sides of the pawl, and when one side ratchet tooth is meshed with the inner gear ring, the other side ratchet tooth is separated from the inner gear ring;
one side of the pawl, which is contacted with the spring, is arc-shaped, and when the spring is switched from one end of the pawl to the other end, the ratchet meshed with the annular gear can be switched to the other side.
4. A ratchet wrench capable of rotating in a small space according to claim 3, further comprising a reversing switch, wherein the reversing switch extends into the rotating portion and passes through the pawl cavity through the slit of the partition plate, a spring through hole is formed in the reversing switch, and the pawl spring passes through the spring through hole.
5. The ratchet wrench capable of rotating in a small space according to claim 4, wherein the reversing switch penetrates through the rotating part and stretches into the connecting part, a stepped counter bore is formed in the part, stretching into the connecting part, of the reversing switch, a steel ball limiting hole is formed in the connecting part, and steel balls are arranged in the stepped counter bore and the steel ball limiting hole.
6. The ratchet wrench capable of rotating in a small space according to claim 5, wherein a quick-release spring is sleeved outside the reversing switch;
the rotary part center is equipped with quick detach through-hole, the reversing switch passes quick detach through-hole stretches into in the connecting portion, and quick detach through-hole is echelonment, cooperatees with quick detach spring.
7. A ratchet wrench as claimed in any one of claims 4 to 6, wherein one end of the reversing switch is provided with a knob.
8. The ratchet wrench of any one of claims 1-6, wherein the spring is provided with a gland on both sides thereof, the gland being slidable inside the pawl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322153566.5U CN220660679U (en) | 2023-08-10 | 2023-08-10 | Ratchet wrench capable of rotating in narrow space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322153566.5U CN220660679U (en) | 2023-08-10 | 2023-08-10 | Ratchet wrench capable of rotating in narrow space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220660679U true CN220660679U (en) | 2024-03-26 |
Family
ID=90326603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322153566.5U Active CN220660679U (en) | 2023-08-10 | 2023-08-10 | Ratchet wrench capable of rotating in narrow space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220660679U (en) |
-
2023
- 2023-08-10 CN CN202322153566.5U patent/CN220660679U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |