CN219987459U - Ratchet device and ratchet screwdriver and ratchet wrench with same - Google Patents
Ratchet device and ratchet screwdriver and ratchet wrench with same Download PDFInfo
- Publication number
- CN219987459U CN219987459U CN202320949081.4U CN202320949081U CN219987459U CN 219987459 U CN219987459 U CN 219987459U CN 202320949081 U CN202320949081 U CN 202320949081U CN 219987459 U CN219987459 U CN 219987459U
- Authority
- CN
- China
- Prior art keywords
- ratchet
- pawl
- indexing
- teeth
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000004044 response Effects 0.000 claims abstract description 13
- 230000000712 assembly Effects 0.000 claims description 27
- 238000000429 assembly Methods 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000000875 corresponding effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model discloses a ratchet device, a screwdriver and a screw wrench with the same, comprising a ratchet seat, wherein the ratchet seat is provided with a ring tooth part and a pawl part, and the ring tooth part comprises ratchet tooth teeth uniformly distributed around a shaft, and the ratchet device is characterized in that: the ratchet part comprises a plurality of first ratchet components which are distributed on the ratchet seat around the circumference, the first ratchet components are provided with two ends, one ends of the first ratchet components are pivoted on the ratchet seat, and the other ends of the plurality of first ratchet components are alternately meshed with different teeth of the annular tooth part; the meshing end of the first pawl component is provided with an indexing ratchet meshed with the ratchet teeth, the ratchet seat is provided with an elastic piece used for pressing the indexing ratchet to the ratchet teeth, and small indexing response can be realized by utilizing the plurality of pawl parts.
Description
Technical Field
The utility model relates to the technical field of dismounting tools, in particular to a ratchet device, a ratchet screwdriver with the same and a ratchet wrench.
Background
In the existing ratchet screw driver or ratchet wrench, each rotation direction only comprises a claw meshed with a ratchet, for a gear with 48 teeth (most ratchet wrenches use the gear), the minimum response (reversing) angle is 360 °/48=7.5°, if the handle of the wrench is quite long, such as a torque wrench, an operator cannot easily use the wrench in a narrow space, more ratchets are needed to complete 360-degree circumferential decomposition to achieve smaller corresponding angles, and the number of teeth needed is relatively large. The number of teeth is simply increased, and when the number of teeth is increased to a certain number, exponential increase is brought to the cost; causing great inconvenience to the user and imperfect user experience.
Disclosure of Invention
The utility model aims to overcome the problems in the prior art and provide a ratchet device, a ratchet screwdriver and a ratchet wrench with the same.
The utility model is realized by the following technical scheme: the ratchet wheel device comprises a ratchet wheel seat, wherein a ring tooth part and a pawl part are arranged on the ratchet wheel seat, the ring tooth part comprises ratchet tooth teeth which are uniformly distributed around a shaft, the pawl part comprises a plurality of first pawl components which are distributed on the ratchet wheel seat around the circumference, the first pawl components are provided with two ends, one end of each first pawl component is pivoted with the ratchet wheel seat, and the other ends of the first pawl components are alternately meshed with different teeth of the ring tooth part; the meshing end of the first pawl assembly is provided with an indexing ratchet meshed with the ratchet teeth, the ratchet seat is provided with an elastic piece used for pressing the indexing ratchet to the ratchet teeth, small-angle indexing response can be achieved by using a plurality of first pawl assemblies, for example, 48 teeth are adopted in a ring tooth part, 360/48=7.5 degrees, and each pawl is indexed by three pawls, and the difference between the three pawls is 2.5 degrees, so that 144-tooth effect can be achieved.
In order to further optimize the utility model, the following technical scheme can be preferably selected:
preferably, the pawl part further comprises a plurality of second pawl components which are distributed on the ratchet seat around the circumference, the second pawl components are opposite to the stopping direction of the first pawl components, the second pawl components have the same structure as the first pawl components, one end of each second pawl component is pivoted to the ratchet seat, and the other ends of the second pawl components are alternately meshed with different teeth of the annular tooth part; the second pawl assembly is also provided with indexing ratchet teeth that engage the ratchet teeth.
Preferably, the first pawl assemblies and the second pawl assemblies are unevenly distributed on the circumference, the interval angle difference of the first pawl assemblies on the circumference realizes the indexing of the forward rotation response angle, and the interval angle difference of the second pawl assemblies on the circumference realizes the indexing of the reverse rotation response angle.
Preferably, the plurality of first pawl assemblies are uniformly distributed on the circumference, the plurality of second pawl assemblies are uniformly distributed on the circumference, the intervals between the indexing ratchets and the annular teeth on the plurality of first pawl assemblies are different, the interval angle difference of the indexing ratchets of the first pawl assemblies on the circumference realizes the indexing of the forward rotation response angle, and the interval angle difference of the indexing ratchets of the second pawl assemblies on the circumference realizes the indexing of the forward rotation response angle.
Preferably, the ratchet device has a counter-clockwise rotation state, a locking state and a clockwise rotation state, a switching mechanism for switching the state of the ratchet device is arranged on the ratchet seat, the switching mechanism comprises a shifting ring rotationally sleeved on the ratchet seat, a protruding portion for shifting the first pawl assembly and the second pawl assembly away from the ring tooth portion is arranged on the inner side wall of the shifting ring, and the protruding portion is designed to be integrated with the shifting ring, so that the overall structural strength is improved.
Preferably, anti-skid grooves are uniformly distributed on the outer side wall of the shifting ring along the axial winding shaft.
Preferably, the ratchet seat is further sleeved with a clamp spring for preventing the pawl part from being separated from the ratchet seat at a position corresponding to the top of the pawl part.
Preferably, the ring gear part comprises an outer gear ring sleeved on the ratchet seat, and the ratchet teeth are uniformly distributed on the inner wall of the outer gear ring around the shaft.
Preferably, the ring tooth part comprises an inner ratchet wheel arranged at the middle position of the ratchet wheel seat, and the ratchet wheel teeth are uniformly distributed on the outer side wall of the inner ratchet wheel around the shaft.
Preferably, the elastic piece is a return spring, a clamping groove is formed in the ratchet seat corresponding to the position of the return spring, one end of the return spring is propped against the ratchet part, the other end of the return spring is propped against the clamping groove, and the quick return of ratchet operation can be ensured by the aid of the return spring.
A ratchet screwdriver comprises the ratchet device.
A ratchet wrench comprises the ratchet device.
The utility model has the following effects:
1. the existing product needs more ratchets to complete 360-degree circumferential decomposition at a smaller corresponding angle, the number of needed teeth is relatively large, the number of teeth is simply increased, when the number of teeth is increased to a certain number, exponential increase is brought to cost, then a ratchet wrench and a ratchet screwdriver are tool products for daily use, the size of the tool products is limited to a certain extent, and the problems of heavy weight, high cost, inconvenience in carrying and the like are brought to the overlarge of the tool products; the product can realize the gear ring with small teeth number, and achieves the effect of multiple teeth number; the number of basic teeth Z of the gear ring, the number of single set of pawls is N,360 °/Z/n=a, a being the angle of each corresponding action, such as: with 48 teeth, indexing is performed by three pawls in a set, 360/48=7.5°, indexing is performed by three pawls, each pawl differing by 2.5 °, thus producing a 144 tooth effect.
2. The ratchet wheel device in the product has a anticlockwise rotation state, a locking state and a clockwise rotation state, wherein the ratchet wheel seat is provided with a switching mechanism for switching the state of the ratchet wheel device, and the ratchet wheel device is convenient to rapidly switch according to the actual use scene requirement when applied to a disassembly and assembly tool.
Drawings
FIG. 1 is a schematic view of a ratchet device in embodiment 1;
FIG. 2 is a half cross-sectional view of the ratchet device of example 1;
FIG. 3 is a cross-sectional view at C-C in example 1;
FIG. 4 is a schematic view showing the structure of a dial ring in embodiment 1;
FIG. 5 is an enlarged schematic view of FIG. 3 at A;
FIG. 6 is a schematic view of a ratchet device in embodiment 2;
FIG. 7 is a half cross-sectional view of the ratchet device of example 2;
FIG. 8 is a schematic view showing the internal structure of a ratchet seat in embodiment 2;
fig. 9 is a schematic diagram showing the structure of the dial ring in embodiment 2.
Wherein:
1-ratchet seat, 2-gear ring, 3-shifting ring, 4-jump ring, 5-first pawl component and 6-second pawl component; 7-bulge parts, 8-anti-skid grooves, 9-positioning springs, 10-positioning grooves, 11-positioning balls, 12-rotating shafts, 13-indexing ratchet plates, 14-elastic pieces, 15-indexing ratchets, 16-clamping grooves and 17-ratchet teeth;
Detailed Description
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 1-5: the ratchet device comprises a ratchet seat 1, wherein a ring tooth part and a pawl part are arranged on the ratchet seat, ratchet tooth teeth 17 are uniformly arranged on the ring tooth part around a shaft, the pawl part is movably arranged on the ratchet seat around the shaft, an indexing ratchet meshed with the ratchet tooth is arranged on the pawl part, an elastic piece for pressing the indexing ratchet into the ratchet tooth is arranged on the ratchet seat, the elastic piece 14 in the embodiment is a return spring, a clamping groove 16 is formed in the ratchet seat corresponding to the position of the return spring, one end of the return spring is propped against the pawl part, and the other end of the return spring is propped against the clamping groove; the middle ring gear part comprises a gear ring 2 which is sleeved on the ratchet seat, and ratchet teeth are uniformly arranged on the inner wall of the gear ring 2 around the shaft. The pawl part comprises a first pawl assembly 5 and a second pawl assembly 6 with opposite stopping directions; the first pawl assembly and the second pawl assembly are movably installed in a plurality of ways around the shaft; the first pawl assembly and the second pawl assembly both comprise a rotating shaft and an indexing ratchet plate, and a plurality of indexing ratchets which are clamped with the ratchet wheels are arranged at the free ends of the indexing ratchet plate; the rotating shaft and the indexing ratchet plate are integrally formed. The first pawl assembly and the second pawl assembly are used for controlling the response angle of the ratchet device, and the specific response modes are as follows: the first pawl assembly and the second pawl assembly have the same structure, the first pawl assembly and the second pawl assembly are used for indexing by using the interval angle of the first pawl assembly and the second pawl assembly on the circumference, and the indexing angles of the indexing ratchets of the adjacent two first pawl assemblies are different by phi, phi=360/Z/N 1 Wherein Z is the basic number of teeth of the ratchet teeth, N 1 The number of the first pawl assemblies is the number of the first pawl assemblies; the indexing angles of the indexing ratchet teeth of two adjacent second pawl assemblies differ by θ, θ=360/Z/N 2 Wherein Z is the basic number of teeth of the ratchet teeth, N 2 The number of the second pawl assemblies is the number of the second pawl assemblies; in addition, there is an indexing mode, the first pawl assembly and the second pawl assembly have different structures, and the indexing ratchet teeth on the first pawl assembly and the second pawl assembly are used for indexing at circumferentially-spaced angles, for example, in the embodiment: the ratchet wheel adopts 48 teeth, the indexing is carried out through three pawls which are a group, 360/48=7.5 degrees, and each pawl is indexed through three pawls, and the difference between the three pawls is 2.5 degrees, so that the 144-tooth effect can be produced; wherein the ratchet seat corresponds toThe top of the pawl part is also sleeved with a clamp spring 4 for preventing the pawl part from separating.
The ratchet wheel device has a anticlockwise rotation state, a locking state and a clockwise rotation state, a switching mechanism for switching the state of the ratchet wheel device is arranged on the ratchet wheel seat, the switching mechanism comprises a shifting ring 3 which is movably sleeved on the ratchet wheel seat in a rotating mode, anti-skid grooves 18 are uniformly distributed on the outer side wall of the shifting ring along an axial winding shaft, and the shifting is facilitated; the side wall of the shifting ring is provided with a protruding part for shifting the first pawl component and the second pawl component away from the tooth part of the ring, the protruding part 7 is a slope mechanism matched with the pawl part in the embodiment, and the pawl part is separated from the ratchet wheel by utilizing the slope mechanism so as to facilitate the improvement state of the ratchet wheel; in order to ensure the accuracy of the poking position, an installation groove is arranged on the ratchet seat along the radial direction of the impeller, a positioning ball 11 is arranged in the installation groove, a positioning spring 9 is arranged in the positioning groove corresponding to the lower position of the positioning ball, three positioning grooves 10 are arranged on the inner wall of the poking ring corresponding to the positioning ball, and the three positioning grooves respectively correspond to the anticlockwise rotation state, the locking state and the clockwise rotation state of the ratchet device. The application principle of the product is as follows:
when the dial is rotated leftward, the group B pawls (first pawl assemblies) are in a pressed state, and the ring gear can be rotated rightward.
When the dial ring rotates rightward, the group a pawls (second pawl assemblies) are in a pressed state, and the ring gear can rotate leftward.
When in the neutral state, the group a (first pawl assembly) and the group B pawls (second pawl assembly), each have a stuck state, when the ratchet screwdriver or ratchet wrench is in the stuck state. As with conventional ratchetless tools.
A ratchet screwdriver comprises the ratchet device.
A ratchet wrench comprises the ratchet device.
Example 2:
as shown in fig. 6-9, the difference between the present embodiment and embodiment 1 is that the ratchet wheel is designed in different forms, the ratchet wheel in embodiment 1 is designed as an inner gear ring structure, the ratchet wheel in this embodiment is designed as an outer gear ring structure, the same structural parts are not described in detail, the description is mainly directed at the different points of the structure, the middle gear part includes an inner ratchet wheel 18 installed in the middle position of the ratchet wheel seat, and the ratchet wheel teeth are uniformly installed on the outer side wall of the inner ratchet wheel around the shaft; in the embodiment, the protruding part is a columnar structure 19 matched with the pawl part, and the pawl is shifted by the columnar structure, so that the pawl part is separated from the ratchet wheel, and the ratchet wheel is improved.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (10)
1. The ratchet wheel device comprises a ratchet wheel seat, wherein a ring tooth part and a pawl part are arranged on the ratchet wheel seat, and the ring tooth part comprises ratchet teeth uniformly distributed around a shaft, and is characterized in that: the ratchet part comprises a plurality of first ratchet components which are distributed on the ratchet seat around the circumference, the first ratchet components are provided with two ends, one ends of the first ratchet components are pivoted on the ratchet seat, and the other ends of the plurality of first ratchet components are alternately meshed with different teeth of the annular tooth part; an indexing ratchet meshed with the ratchet teeth is arranged on the meshing end of the first pawl assembly, and an elastic piece used for pressing the indexing ratchet to the ratchet teeth is arranged on the ratchet seat.
2. The ratchet device of claim 1, wherein: the pawl part also comprises a plurality of second pawl components which are distributed on the ratchet seat around the circumference, the second pawl components are opposite to the stopping direction of the first pawl components, the second pawl component has the same structure as the first pawl component, one end of the second pawl component is pivoted to the ratchet seat, and the other ends of the second pawl components are alternately meshed with different teeth of the ring tooth part; the second pawl assembly is also provided with indexing ratchet teeth that engage the ratchet teeth.
3. The ratchet device of claim 2, wherein: the first pawl assemblies and the second pawl assemblies are unevenly distributed on the circumference, the interval angle difference of the first pawl assemblies on the circumference realizes the indexing of the forward rotation response angle, and the interval angle difference of the second pawl assemblies on the circumference realizes the indexing of the reverse rotation response angle.
4. The ratchet device of claim 2, wherein: the first pawl assemblies are uniformly distributed on the circumference, the second pawl assemblies are uniformly distributed on the circumference, the intervals between the indexing ratchets and the annular teeth on the first pawl assemblies are different, the indexing of the forward rotation response angle is realized by the interval angle difference of the indexing ratchets on the circumference of the first pawl assemblies, and the indexing of the forward rotation response angle is realized by the interval angle difference of the indexing ratchets on the circumference of the second pawl assemblies.
5. The ratchet device of claim 2, wherein: the ratchet wheel device is provided with a anticlockwise rotating state, a locking state and a clockwise rotating state, a switching mechanism for switching the state of the ratchet wheel device is arranged on the ratchet wheel seat, the switching mechanism comprises a shifting ring which is rotationally sleeved on the ratchet wheel seat, and a protruding portion for shifting the first pawl component and the second pawl component away from the ring tooth portion is arranged on the inner side wall of the shifting ring.
6. The ratchet device of claim 1, wherein: the ring gear part comprises an outer gear ring sleeved on the ratchet seat, and ratchet teeth are uniformly distributed on the inner wall of the outer gear ring around the shaft.
7. The ratchet device of claim 1, wherein: the ring tooth part comprises an inner ratchet wheel arranged at the middle position of the ratchet wheel seat, and ratchet wheel teeth are uniformly distributed on the outer side wall of the inner ratchet wheel around the shaft.
8. The ratchet device of claim 1, wherein: the elastic piece is a return spring, a clamping groove is formed in the ratchet seat corresponding to the position of the return spring, one end of the return spring is propped against the ratchet part, and the other end of the return spring is propped against the clamping groove.
9. A ratchet screwdriver, characterized in that: a ratchet arrangement comprising a ratchet arrangement as claimed in any one of claims 1 to 8.
10. A ratchet wrench, characterized in that: a ratchet arrangement comprising a ratchet arrangement as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320949081.4U CN219987459U (en) | 2023-04-24 | 2023-04-24 | Ratchet device and ratchet screwdriver and ratchet wrench with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320949081.4U CN219987459U (en) | 2023-04-24 | 2023-04-24 | Ratchet device and ratchet screwdriver and ratchet wrench with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219987459U true CN219987459U (en) | 2023-11-10 |
Family
ID=88609034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320949081.4U Active CN219987459U (en) | 2023-04-24 | 2023-04-24 | Ratchet device and ratchet screwdriver and ratchet wrench with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219987459U (en) |
-
2023
- 2023-04-24 CN CN202320949081.4U patent/CN219987459U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10549410B2 (en) | Electric ratchet wrench | |
| CA2876489C (en) | Electric ratchet wrench | |
| US4970915A (en) | Reversible unidirectional transmission | |
| US10926382B2 (en) | Electric ratchet wrench | |
| US7536934B1 (en) | Ratchet tool | |
| US11370091B2 (en) | Electric ratchet wrench | |
| CN211975705U (en) | Inertial rotating device | |
| US10751860B2 (en) | Electric rapid ratchet wrench and method of using the same | |
| US11173583B2 (en) | External tooth type ratchet screwdriver | |
| US4098354A (en) | Impact driver for electric drill | |
| CN219987459U (en) | Ratchet device and ratchet screwdriver and ratchet wrench with same | |
| US20100034617A1 (en) | Locking device | |
| EP2727686A1 (en) | Socket wrench | |
| CN209850781U (en) | Internal tooth type ratchet screwdriver | |
| US7261018B2 (en) | Power tool | |
| CN209970584U (en) | External tooth type ratchet screwdriver | |
| US20030213340A1 (en) | Reverse torque drive ratchet wrench | |
| US6902047B2 (en) | Ratchet device comprising two sets of symmetrical pawls to enhance torsion thereof | |
| JP3243928B2 (en) | Electric tool | |
| CN112223186B (en) | Hand-pressing type socket wrench | |
| US20150047472A1 (en) | Dual-drive, self-ratcheting, mechanism with multiple input ports | |
| CN210589001U (en) | Spanner is used in little space | |
| CN220660690U (en) | Structure of wrench with rotatable head | |
| CN117943995A (en) | Spanner wrench | |
| JPH0637897Y2 (en) | Rotation angle setting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |