CN209774487U - silent ratchet wrench - Google Patents
silent ratchet wrench Download PDFInfo
- Publication number
- CN209774487U CN209774487U CN201920377613.5U CN201920377613U CN209774487U CN 209774487 U CN209774487 U CN 209774487U CN 201920377613 U CN201920377613 U CN 201920377613U CN 209774487 U CN209774487 U CN 209774487U
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- wrench
- roller
- transmission assemblies
- flange ring
- head
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Abstract
Noiseless ratchet wrench, the utility model relates to a ratchet wrench especially relates to noiseless ratchet wrench. The silent ratchet wrench has the advantages of high stability, simple and convenient processing and convenient maintenance. One end of the wrench body is provided with a wrench hole; the wrench head is limited in the wrench hole through a pair of clamp springs; the wrench is characterized in that a flange ring fixedly connected is arranged on the outer side surface of the wrench head; a plurality of uniformly distributed transmission assemblies are arranged on the flange ring; a plurality of uniformly distributed inclined platforms are arranged in the spanner holes; a plurality of working cavities matched with the transmission assembly are formed between the plurality of inclined tables and the flange ring; the working cavity comprises a sliding part and a limiting part; the quantity of the plurality of the inclined tables is equal to that of the plurality of the transmission assemblies, and the inclined tables correspond to the transmission assemblies one by one; the number of the transmission assemblies is equal to that of the working cavities, and the transmission assemblies correspond to the working cavities one by one; the transmission assembly comprises a roller and a steel plate spring piece; the utility model has the characteristics of stability is high, and processing is simple and convenient, convenient maintenance etc.
Description
Technical Field
the utility model relates to a ratchet spanner especially relates to noiseless ratchet spanner.
background
the ratchet wrench comprises a wrench main body, wherein a clamp spring, a pawl, a spring and a ratchet wheel are arranged in a containing space in the head of the wrench main body in a matching mode, the ratchet wheel is composed of the ratchet wheel main body and a spacer bush, the spacer bush is a circular ring with a concave ring groove in the periphery, and the spacer bush is sleeved on one side of the ratchet wheel main body in a matching mode. The existing ratchet wrench generally realizes one-way work by meshing and seizing between the ratchet wheel and the ratchet, and the friction between the ratchet wheel and the ratchet generates harsh noise during work, thereby influencing the use environment.
in the prior art, for example, "a silent ratchet wrench" issued by the national office on 6/8/2018 entitled "2017216008854" is applied. The ratchet head is a hollow cylindrical body, a plurality of inclined platforms are arranged on the periphery of the ratchet head by taking a circular shaft of the ratchet head as a central array, the inclined plane of each inclined platform is tangent to the inner side circle of the ratchet head, the ratchet head is inserted into and rotatably connected into the circular ring, each inclined platform and the circular ring are also provided with a large pin column and a small pin column in the space formed by the ratchet head, the bottoms of the two pin columns are positioned by the mounting groove, an annular end cover is rotatably connected onto the positioning groove, the ratchet head is positioned in the circular ring by the annular end cover, the outer circumference of the end cover is provided with a clamping groove, a clamping opening is further formed in the clamping groove, and the clamping spring is clamped into the clamping groove and positions the two pin columns. The silent ratchet wrench in the prior art can realize relative silence and silence during working, but has poor operation stability in the processes of production, processing, operation and use, and the phenomenon that the wrench is frequently screwed and slipped occurs.
SUMMERY OF THE UTILITY MODEL
the utility model discloses to above problem, provide stability height, processing is simple and convenient, the convenient noiseless ratchet spanner who maintains.
The technical scheme of the utility model is that: the wrench comprises a wrench body and a wrench head, wherein one end of the wrench body is provided with a wrench hole; the wrench head is limited in the wrench hole through a pair of clamp springs; the wrench is characterized in that a flange ring fixedly connected is arranged on the outer side surface of the wrench head; a plurality of uniformly distributed transmission assemblies are arranged on the flange ring;
a plurality of uniformly distributed inclined platforms are arranged in the spanner holes; a plurality of working cavities matched with the transmission assembly are formed between the plurality of inclined tables and the flange ring; the working cavity comprises a sliding part and a limiting part;
the quantity of the plurality of the inclined tables is equal to that of the plurality of the transmission assemblies, and the inclined tables correspond to the transmission assemblies one by one;
the number of the transmission assemblies is equal to that of the working cavities, and the transmission assemblies correspond to the working cavities one by one;
the transmission assembly comprises a roller and a steel plate spring piece;
A clamping position matched with the steel plate spring is arranged on the flange ring and is positioned in the limiting part;
The roller is movably arranged in the sliding part; the diameter of the roller is larger than the width of the limiting part;
The diameter of the roller is smaller than the width of the sliding part;
the steel plate spring is C-shaped and is matched with the adjacent roller in the working cavity.
The number of the rollers is 18.
the inner side sleeve opening of the wrench head is in a hexagonal or quincunx shape.
a gasket is arranged between the wrench head and the clamp spring and is matched with the wrench head, and the gasket is annular.
the utility model comprises a wrench body and a wrench head, wherein one end of the wrench body is provided with a wrench hole; the wrench head is limited in the wrench hole through a pair of clamp springs; a flange ring fixedly connected is arranged on the outer side surface of the wrench head; and a plurality of uniformly distributed transmission assemblies are arranged on the flange ring. The present case improves the structure of the transmission assembly among the prior art, has promoted silent spanner's stability and reliability. Through the cooperation of the steel plate spring and the adjacent roller in the working cavity, the functions of noiseless screwing or rotation of the wrench and the like are realized. The utility model has the characteristics of stability is high, and processing is simple and convenient, convenient maintenance etc.
Drawings
FIG. 1 is a schematic perspective view of the exploded structure of the present invention,
Figure 2 is a perspective view of the combined state of the present invention,
figure 3 is an enlarged view of the installation structure of the leaf spring and the roller,
figure 4 is a schematic view of a configuration in a use state,
FIG. 5 is a schematic structural view of a second usage state;
FIG. 6 is a schematic view of a structure of a back position for using the wrench of the present invention;
In the drawing, 1 is a wrench body, 11 is a wrench hole, 111 is an inclined table, 2 is a wrench head, 21 is a flange ring, 211 is a clamping position, 3 is a clamping spring, 4 is a transmission assembly, 41 is a roller, 42 is a steel plate spring piece, 5 is a working cavity, and 6 is a gasket.
Detailed Description
the utility model, as shown in fig. 1-6, comprises a wrench body 1 and a wrench head 2, wherein one end of the wrench body 1 is provided with a wrench hole 11; the wrench head 2 is limited in the wrench hole 11 through a pair of clamp springs 3; a flange ring 21 fixedly connected is arranged on the outer side surface of the wrench head 2; the flange ring 21 is provided with a plurality of uniformly distributed transmission assemblies 4; the structure of the device is compact and reasonable, the device is convenient to disassemble, and as shown in figure 1, the device is convenient to maintain and repair;
A plurality of uniformly distributed and fixedly arranged inclined platforms 111 are arranged in the plate hole 11; a plurality of working cavities 5 matched with the transmission assembly 4 are formed between the plurality of inclined platforms 111 and the flange ring 21; the working cavity 5 comprises a sliding part and a limiting part; the sliding part is that the roller 41 can roll without being limited by the side wall after the roller 41 is positioned at the position; the limiting part is that the roller 41 is limited by the side wall after being positioned at the position, and the wrench body 1 cannot rotate when being pulled;
The quantity of the plurality of inclined platforms 111 is equal to that of the plurality of transmission assemblies 4, and the inclined platforms correspond to the transmission assemblies one by one;
the number of the transmission assemblies 4 is equal to that of the working cavities 5, and the transmission assemblies correspond to the working cavities one by one;
the transmission assembly 4 comprises a roller 41 and a steel plate spring piece 42; the steel plate spring piece 42 has strong elastic stability and is not easy to age;
A clamping position 211 matched with the steel plate spring is arranged on the flange ring 21, the clamping position 211 is positioned in the limiting part, and the steel plate spring is always in contact with the roller;
The roller 41 is movably arranged in the sliding part; the diameter of the roller 41 is larger than the width of the limiting part;
The diameter of the roller is smaller than the width of the sliding part;
the steel plate spring is C-shaped and is matched with the adjacent roller 41 in the working cavity 5. As shown in fig. 3, the left sides of the plurality of rollers 41 are respectively provided with a steel plate spring matched with the rollers, so that the rollers 41 are ensured to be always contacted with the wrench body 1 and the wrench head 2 under the condition of no stress, and the stability of the wrench is improved. The technical scheme includes that the pin column comprises a large pin column and a small pin column, the large pin column in the pin column is a stainless steel pin column, the small pin column is a nylon pin column, the large pin column and the small pin column are not fixedly connected, the small pin column and the nylon pin column are separately arranged, and when the pin column is used, a gap exists between two pin shafts in part, the connection is unreliable, and the problem that the overall strength and the stability are poor is directly caused.
As shown in fig. 4, when the wrench is operated, the holding portion of the plate body is wrenched in a clockwise direction (an arrow on the left side of the holding portion in the figure indicates a wrenching direction of force), and the roller 41 moves in a counterclockwise direction around the center of the bolt (an arrow near the hole-wrenching position in the figure indicates a moving direction of the roller), that is, the roller 41 moves toward the stopper; because the width of the limiting part is smaller than the diameter of the roller 41, the plurality of rollers 41 are respectively clamped between the plate body and the wrench head 2, so that the wrench head 2, the rollers 41 and the wrench body 1 are integrated, and the wrench can realize the function of screwing or unscrewing the bolt.
When the wrench is turned counterclockwise (the left arrow of the grip portion indicates the pulling direction of the force in the figure), the roller 41 will overcome the elastic force of the steel plate spring and move around the bolt center in the opposite direction to the pulling direction of the wrench (the arrow near the wrench hole indicates the moving direction of the roller), and the roller 41 is located at the sliding portion where the distance between the ramp 111 and the flange 21 is larger than the diameter of the roller 41, and the roller 41 is disengaged from the wrench body 1 and the wrench head 2, and the wrench body 1 will rotate around the bolt center by a certain angle.
the number of the rollers is 18. Through the increase of the number of the rollers 41, the strength of the wrench can be improved, the rotation angle of the wrench can be reduced, and the rotation angle of the wrench can reach 0 degree (as shown in fig. 6, it is assumed that the wrench is in a tightening direction clockwise and a loosening direction counterclockwise, the wrench drawn by a solid line is in a starting-point pulling position, the wrench drawn by a dotted line is in a position after being pulled at an in-place point, the wrench can be pulled in a narrow space, and can be retracted to the solid-line position again after being pulled to the dotted-line position clockwise, that is, the rotation angle of the wrench can reach 0 degree), so that the wrench can be operated in a smaller working space conveniently.
Compared with a ratchet wrench, the minimum angle of the wrench rotation angle of the ratchet pawl structure is determined according to the number of ratchet teeth, the number of the ratchet teeth cannot be unlimited, for example, the number of the ratchet teeth is 45, the minimum angle of the wrench rotation angle is 8 degrees, the number of the ratchet teeth is 90 degrees, and the minimum angle of the wrench rotation angle is 4 degrees.
The inner side sleeve opening of the wrench head 2 is in a hexagon or quincunx shape.
A gasket 6 matched with the wrench head 2 and the clamp spring 3 is arranged between the wrench head 2 and the clamp spring 3, and the gasket 6 is annular. Shelter from the both sides of working chamber 5 through gasket 6, effectively improve the stability of transmission assembly 4 operation.
the disclosure of the present application also includes the following points:
(1) The drawings of the embodiments disclosed herein only relate to the structures related to the embodiments disclosed herein, and other structures can refer to general designs;
(2) In case of conflict, the embodiments and features of the embodiments disclosed in this application can be combined with each other to arrive at new embodiments;
the above embodiments are only embodiments disclosed in the present disclosure, but the scope of the disclosure is not limited thereto, and the scope of the disclosure should be determined by the scope of the claims.
Claims (4)
1. The silent ratchet wrench comprises a wrench body and a wrench head, wherein one end of the wrench body is provided with a wrench hole; the wrench head is limited in the wrench hole through a pair of clamp springs; the wrench is characterized in that a flange ring fixedly connected is arranged on the outer side surface of the wrench head; a plurality of uniformly distributed transmission assemblies are arranged on the flange ring;
a plurality of uniformly distributed inclined platforms are arranged in the spanner holes; a plurality of working cavities matched with the transmission assembly are formed between the plurality of inclined tables and the flange ring; the working cavity comprises a sliding part and a limiting part;
The quantity of the plurality of the inclined tables is equal to that of the plurality of the transmission assemblies, and the inclined tables correspond to the transmission assemblies one by one;
the number of the transmission assemblies is equal to that of the working cavities, and the transmission assemblies correspond to the working cavities one by one;
The transmission assembly comprises a roller and a steel plate spring piece;
a clamping position matched with the steel plate spring is arranged on the flange ring and is positioned in the limiting part;
the roller is movably arranged in the sliding part; the diameter of the roller is larger than the width of the limiting part;
The diameter of the roller is smaller than the width of the sliding part;
The steel plate spring is C-shaped and is matched with the adjacent roller in the working cavity.
2. the silent ratchet wrench of claim 1, wherein the number of roller arrangements is 18.
3. the silent ratchet wrench of claim 1, wherein the socket on the inside of the wrench head is hexagonal or quincunx.
4. The silent ratchet wrench as claimed in claim 1, wherein an adaptive washer is disposed between the wrench head and the clamp spring, and the washer is ring-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920377613.5U CN209774487U (en) | 2019-03-22 | 2019-03-22 | silent ratchet wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920377613.5U CN209774487U (en) | 2019-03-22 | 2019-03-22 | silent ratchet wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209774487U true CN209774487U (en) | 2019-12-13 |
Family
ID=68799263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920377613.5U Active CN209774487U (en) | 2019-03-22 | 2019-03-22 | silent ratchet wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209774487U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843898A (en) * | 2020-07-29 | 2020-10-30 | 安阳市途鑫机动车鉴定评估有限公司 | Self-locking mute needle roller wrench |
-
2019
- 2019-03-22 CN CN201920377613.5U patent/CN209774487U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843898A (en) * | 2020-07-29 | 2020-10-30 | 安阳市途鑫机动车鉴定评估有限公司 | Self-locking mute needle roller wrench |
| CN111843898B (en) * | 2020-07-29 | 2021-08-06 | 安阳市途鑫机动车鉴定评估有限公司 | Self-locking mute needle roller wrench |
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