Gear one-way clutch

Abstract

The utility model discloses a gear one-way clutch which comprises an outer gear ring, a mounting cavity, a retainer and an inner ring, the mounting cavity is arranged at the axis of the bottom of the outer gear ring, the retainer is placed in the mounting cavity, the inner ring is placed in the retainer, the outer gear ring, the retainer and the inner ring are all located on the same axis, and a notch is formed in the top of the retainer in an inward concave mode. And the notches are communicated with the front side and the rear side of the retainer. The retainer, the steel balls and the rollers are arranged to be of an integrated structure, the adjustment step of a traditional split type retainer is eliminated, assembling can be completed only by coaxially butting the outer gear ring and the inner ring, dependence on skills of workers is reduced, meanwhile, through the integrated forming structure, the assembling contact face is further reduced, rigidity is improved, and the assembling efficiency is improved. The independent machining link of the retainer is omitted, material waste and the procedures of heat treatment, grinding and the like are reduced, the production period is shortened, and the problem of tolerance accumulation caused by split assembly is solved through the integrated structure.

Description

Technical Field

[0001] This utility model relates to a clutch, specifically a one-way gear clutch, belonging to the field of clutch technology. Background Technology

[0002] A gear one-way clutch is a special mechanical transmission device whose main function is to allow power to be transmitted in one direction and to automatically cut off the transmission when the power is reversed. Through its internal structural design, it achieves a one-way working mode of "drive-idle" and is widely used in mechanical systems that require prevention of reverse or intermittent transmission.

[0003] However, most existing clutches have various problems. For example, in the gear one-way clutch disclosed in announcement number CN201448387U, although it has a compact structure, is easy to operate, and is convenient to engage and disengage, and the clutch state can be switched by simply changing the direction of the gear, in this technical solution and most current gear one-way clutches, each component needs to undergo multiple processes such as turning, heat treatment, and grinding, which leads to a longer production cycle. Moreover, the accumulation of dimensional tolerances of different components can easily cause assembly interference. Furthermore, when assembling the parts separately, it is necessary to ensure the coaxiality of the inner and outer rings and the positioning accuracy of the cage. Manual adjustment is time-consuming and has a low pass rate. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. Specifically, the purpose of this utility model is to solve the aforementioned shortcomings of existing technologies by proposing a one-way gear clutch.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A one-way gear clutch includes an outer gear ring, a mounting cavity, a cage, and an inner ring. The mounting cavity is located at the bottom center of the outer gear ring, the cage is placed inside the mounting cavity, and the inner ring is placed inside the cage. The outer gear ring, the cage, and the inner ring are all located on the same axis.

[0007] The top of the cage is recessed and has a groove that runs through the front and rear sides of the cage. A steel ball is placed in the groove of the cage and is in rolling connection with the cage. The steel ball protrudes from the front and rear sides of the cage and rolls against the inner wall of the outer gear ring and the outer wall of the inner gear ring, respectively.

[0008] As a further embodiment of this utility model: a retainer end piece is sleeved on the outside of the inner ring, the outer diameter of the retainer end piece is the same as that of the retainer, and it abuts against the bottom of the retainer, and the bottom of the inner ring and the bottom of the retainer end piece are parallel and both are located at the bottom of the mounting cavity.

[0009] As a further embodiment of this utility model: a first limiting groove is provided in the mounting cavity, and a second limiting groove is provided on the outer wall of the inner ring. Both the first limiting groove and the second limiting groove are annular structures, and the steel ball is rolled and engaged between the first limiting groove and the second limiting groove.

[0010] As a further improvement of this utility model: the bottom of the retainer is recessed with a rectangular groove, and a roller is rotatably connected in the rectangular groove. A strip groove is inclined on one side of the rectangular groove, and a spring is provided in the strip groove. One end of the spring abuts against the roller.

[0011] As a further improvement of this utility model: the bottom of the retainer is provided with a positioning hole, and the end piece of the retainer is provided with a positioning protrusion, which is inserted into the positioning hole.

[0012] As a further improvement of this utility model, an oil-impregnated copper sleeve is provided in the top center through hole of the inner ring.

[0013] The beneficial effects of this utility model are:

[0014] In this invention, by integrating the cage, steel balls, and rollers into a single structure, the adjustment steps of traditional separate cages are eliminated. Assembly can be completed simply by coaxially connecting the outer gear ring and the inner ring, reducing reliance on worker skills. At the same time, the integrated molding structure further reduces the assembly contact surface, improves rigidity, eliminates the need for separate cage processing, reduces material waste and heat treatment, grinding and other processes, shortens the production cycle, and avoids the tolerance accumulation problem caused by separate assembly, thus improving torque transmission stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the cage structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the inner ring and its connecting structure of the present invention;

[0019] In the diagram: 1. External gear ring, 2. Mounting cavity, 3. Cage, 4. Inner ring, 5. Cage end piece, 6. Steel ball, 7. First limiting groove, 8. Second limiting groove, 9. Roller, 10. Spring, 11. Positioning protrusion, and 12. Oil-impregnated copper sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0021] like Figures 1 to 4 As shown, a one-way gear clutch includes an outer gear ring 1, a mounting cavity 2, a retainer 3, and an inner ring 4. The mounting cavity 2 is located at the bottom axis of the outer gear ring 1, the retainer 3 is placed in the mounting cavity 2, and the inner ring 4 is placed in the retainer 3. The outer gear ring 1, the retainer 3, and the inner ring 4 are all located on the same axis.

[0022] The top of the cage 3 is recessed and has a groove that is connected to the front and rear sides of the cage 3. A steel ball 6 is placed in the groove of the cage 3. The steel ball 6 is in rolling connection with the cage 3. The steel ball 6 protrudes from the front and rear sides of the cage 3 and the protruding part rolls against the inner wall of the outer gear ring 1 and the outer wall of the inner ring 4 respectively.

[0023] The bottom of the retainer 3 is recessed with a rectangular slot, and a roller 9 is rotatably connected in the rectangular slot. A strip-shaped slot is inclined on one side of the rectangular slot, and a spring 10 is installed in the strip-shaped slot. One end of the spring 10 abuts against the roller 9.

[0024] In this invention, by setting the cage 3, steel ball 6, and roller 9 into an integrated structure, the adjustment steps of the traditional separate cage are eliminated. Assembly can be completed simply by coaxially connecting the outer gear ring 1 and the inner ring 4, reducing reliance on worker skills. At the same time, the integrated molding structure further reduces the assembly contact surface, improves rigidity, eliminates the separate processing of the cage 3, reduces material waste and heat treatment, grinding and other processes, shortens the production cycle, and avoids the tolerance accumulation problem caused by separate assembly, thus improving the stability of torque transmission. Example 2

[0025] like Figures 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0026] The inner ring 4 is fitted with a retainer end piece 5. The outer diameter of the retainer end piece 5 is the same as that of the retainer 3 and abuts against the bottom of the retainer 3. The bottom of the inner ring 4 and the bottom of the retainer end piece 5 are parallel and both are located at the bottom of the mounting cavity 2. The bottom of the retainer 3 is isolated and protected by the retainer end piece 5.

[0027] The mounting cavity 2 is provided with a first limiting groove 7, and the outer wall of the inner ring 4 is provided with a second limiting groove 8. Both the first limiting groove 7 and the second limiting groove 8 are annular structures, and the steel ball 6 is rolled and locked between the first limiting groove 7 and the second limiting groove 8. The steel ball 6 is locked and limited by the setting of the limiting groove, and at the same time, the retainer 3 can be locked and limited in the mounting cavity 2.

[0028] The bottom of the cage 3 is also provided with a positioning hole, and the end piece 5 of the cage is provided with a positioning protrusion 11. The positioning protrusion 11 is inserted into the positioning hole, and the end piece 5 of the cage and the cage 3 can be quickly positioned and connected through the positioning protrusion 11.

[0029] An oil-impregnated copper sleeve 12 is provided in the top center through hole of the inner ring 4. The oil-impregnated copper sleeve 12 effectively reduces the frictional resistance during the transmission between the outer gear ring 1 and the inner ring 4.

[0030] Working principle: When using this clutch, first place the steel ball 6 in the slot at the top of the cage 3, then place the entire cage 3 coaxially in the mounting cavity 2, and place the inner ring 4 coaxially in the cage 3, so that the steel ball 6 rolls and engages between the first limiting groove 7 and the second limiting groove 8. Then, the cage end plate 5 is coaxially sleeved on the outside of the inner ring 4, and the positioning protrusion 11 is aligned with the positioning hole at the bottom of the cage 3. At this time, the roller 9 is deflected by the elastic force of the spring 10 and abuts against the inner wall of the mounting cavity 2. When the clutch rotates in one direction, the roller 9 locks the outer gear ring 1 and the inner ring 4, so that the two can rotate synchronously. When rotating in the opposite direction, the roller 9 deflects, and the outer gear ring 1 and the inner ring 4 are locked in contact.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A one-way gear clutch, comprising an outer gear ring (1), a mounting cavity (2), a cage (3), and an inner ring (4), characterized in that, The mounting cavity (2) is located at the bottom axis of the outer gear ring (1), the retainer (3) is placed in the mounting cavity (2), the inner ring (4) is placed in the retainer (3), and the outer gear ring (1), the retainer (3) and the inner ring (4) are all located on the same axis. The top of the retainer (3) is recessed and has a groove that is connected to the front and rear sides of the retainer (3). A steel ball (6) is provided in the groove of the retainer (3). The steel ball (6) is in rolling connection with the retainer (3). The steel ball (6) protrudes from the front and rear sides of the retainer (3) and the protruding part rolls against the inner wall of the outer gear ring (1) and the outer wall of the inner ring (4).

2. A one-way gear clutch according to claim 1, characterized in that: The inner ring (4) is fitted with a retainer end piece (5), the outer diameter of which is the same as that of the retainer (3) and abuts against the bottom of the retainer (3). The inner ring (4) is parallel to the bottom of the retainer end piece (5) and both are located at the bottom of the mounting cavity (2).

3. A one-way gear clutch according to claim 1, characterized in that: The mounting cavity (2) is provided with a first limiting groove (7), and the outer wall of the inner ring (4) is provided with a second limiting groove (8). The first limiting groove (7) and the second limiting groove (8) are both annular structures, and the steel ball (6) is rolled and engaged between the first limiting groove (7) and the second limiting groove (8).

4. A one-way gear clutch according to claim 1, characterized in that: The bottom of the retainer (3) is recessed with a rectangular slot, and a roller (9) is rotatably connected in the rectangular slot. A strip-shaped slot is inclined on one side of the rectangular slot, and a spring (10) is provided in the strip-shaped slot. One end of the spring (10) abuts against the roller (9).

5. A one-way gear clutch according to claim 2, characterized in that: The bottom of the retainer (3) is also provided with a positioning hole, and the end piece (5) of the retainer is provided with a positioning protrusion (11), which is inserted into the positioning hole.

6. A one-way gear clutch according to claim 1, characterized in that: An oil-impregnated copper sleeve (12) is provided in the top center through hole of the inner ring (4).

Images