One-way clutch for electric vehicle

Abstract

The utility model discloses a one-way clutch for an electric vehicle, which belongs to the technical field of one-way clutches, and comprises an outer ring and an inner ring sleeved at the circle center of the outer ring, the outer ring is provided with a groove, a roller is arranged in the groove, two groups of fixing rings are fastened on the outer ring through first fixing bolts, and the inner ring is provided with a second fixing bolt. The fixing rings are located on the two sides of the inner ring respectively. A fixing block is fixedly installed on the face, close to the inner ring, of the fixing ring, a spring is arranged on the fixing block, and a positioning ring is fixedly installed at the other end of the spring. The two ends of the rollers are inserted into the positioning rings on the two sides of the inner ring respectively, and the grooves are distributed in the inner side face of the outer ring in a circumferential array mode. According to the utility model, the roller is inserted into the positioning ring, so that the roller is convenient to mount and dismount, an operator can conveniently check and maintain the roller, and the service life of the roller is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of one-way clutches, in particular to a one-way clutch for electric vehicles. Background Art

[0002] The roller-type one-way clutch in the prior art is often used in electric vehicles, and uses rollers to lock the outer ring and the inner ring to transmit power.

[0003] However, the roller-type one-way clutch in the prior art must have a certain gap between its inner and outer rings. However, when the minimum gap is 0.025, radial movement is more likely to occur, affecting the force of the roller and easily causing problems such as cracking and jamming. Therefore, it is often necessary to inspect and maintain it. However, the roller-type one-way clutch in the prior art is inconvenient to disassemble, which makes maintenance difficult and affects its service life.

[0004] In addition, the Chinese patent with authorization announcement number CN216009310U discloses a one-way clutch. Although the elastic structure space therein is reduced, its spring plate and roller need to be installed in the groove, resulting in a limited number of rollers that can be added, and therefore a limited effect of increasing stability.

[0005] Therefore, we propose a one-way clutch for electric vehicles to solve the above problems.

[0006] The above information disclosed in this background technology is only for enhancing understanding of the background technology of the present invention and therefore it may contain information that does not constitute the prior art that is already known to a person of ordinary skill in the art. Utility Model Content

[0007] The purpose of the present utility model is to provide a one-way clutch for an electric vehicle to solve the problems in the current market raised by the above background technology.

[0008] To achieve the above-mentioned object, the present invention provides a one-way clutch for an electric vehicle, comprising an outer ring and an inner ring sleeved at the center of the outer ring, the outer ring being provided with a groove, the groove being provided with a roller, the outer ring being fastened to two sets of fixing rings by a first fixing bolt, and the fixing rings being located on both sides of the inner ring respectively;

[0009] A fixing block is fixedly mounted on one side of the fixing ring close to the inner ring, a spring is provided on the fixing block, and a positioning ring is fixedly mounted on the other end of the spring;

[0010] The two ends of the roller are respectively inserted into the positioning rings on both sides of the inner ring.

[0011] Preferably, the grooves are distributed in a circumferential array on the inner side of the outer ring, the number of the rollers is the same as the number of the grooves, and each of the rollers is located in one of the grooves;

[0012] Positioning rings are installed at both ends of each roller.

[0013] Preferably, the inner side surface of the outer ring is further provided with an arc-shaped guide groove, the contact surface between the fixed block and the outer ring is further provided with a spherical groove, and a ball is provided in the spherical groove, and the ball part passes through the spherical groove and is located in the guide groove.

[0014] Preferably, outer collars are provided on both sides of the outer ring, and the two outer collars are fastened to the outer ring by second fixing bolts.

[0015] Preferably, the diameters of the upper and lower sides of the inner ring are smaller than the diameter of the middle part, and the difference is adapted to the thickness of the positioning ring.

[0016] Preferably, the groove has a surface a and a surface b, and a perpendicular line from the center of the roller to the surface b forms an angle with the axis of the spring in the groove at that location.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) The utility model makes it easy to install and disassemble the roller by inserting it into the positioning ring, and facilitates the inspection and maintenance of the roller by the operator, thereby effectively improving its service life.

[0019] (2) The present invention reduces the area occupied by the groove by installing the spring outside the groove, and the spring axis and the perpendicular line from the roller to the groove b surface have a certain angle, so that more grooves can be opened on the outer ring and more rollers and springs can be installed, which further improves the stability of use compared with the existing technology.

[0020] (3) The utility model can replace the rollers more conveniently when the rollers are worn out after long-term use, or can replace a part of the rollers individually when a part of the rollers is damaged.

[0021] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 for Figure 1 Exploded diagram of

[0024] Figure 3 for Figure 1 Schematic diagram of the structure after hiding the outer ring;

[0025] Figure 4 for Figure 3 Schematic diagram of the structure after hiding the fixing ring;

[0026] Figure 5 This is a schematic structural diagram of the inner ring of the utility model;

[0027] Figure 6 for Figure 2 A magnified view of the structure at point A;

[0028] Figure 7 for Figure 4 Top view of .

[0029] In the figure: 1. Outer ring; 2. Inner ring; 3. Roller; 4. Fixing ring; 5. Fixing block; 6. Spring; 7. Positioning ring; 8. First fixing bolt; 9. Outer ring; 10. Second fixing bolt; 11. Groove; 12. Guide groove; 13. Spherical groove; 14. Ball; 15. Surface a; 16. Surface b. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of the embodiments. It should be noted that the drawings are schematic and not to scale. For the sake of clarity and convenience, the relative sizes and proportions of the parts shown in the drawings are exaggerated or reduced in size, and any sizes are only illustrative and not restrictive.

[0031] See also Figure 1-Figure 7A one-way clutch for electric vehicles comprises an outer ring 1 and an inner ring 2 sleeved at the center of the outer ring 1. The outer ring 1 is provided with a groove 11, and a roller 3 is provided in the groove 11. The outer ring 1 is fastened with two sets of fixing rings 4 by a first fixing bolt 8, and the fixing rings 4 are respectively located on both sides of the inner ring 2. A fixing block 5 is fixedly installed on one side of the fixing ring 4 close to the inner ring 2. A spring 6 is provided on the fixing block 5. A positioning ring 7 is fixedly installed on the other end of the spring 6. The two ends of the roller 3 are respectively inserted into the positioning rings on both sides of the inner ring 2. In the ring 7, the grooves 11 are distributed in a circular array on the inner side of the outer ring 1. The number of rollers 3 is the same as the number of grooves 11, and each roller 3 is located in one of the grooves 11. A positioning ring 7 is installed at both ends of each roller 3. The groove 11 has an a surface 15 and a b surface 16. The perpendicular line from the center of the roller 3 to the b surface 16 has an angle with the axis of the spring 6 in the groove 11 at that location. The diameters of the upper and lower sides of the inner ring 2 are smaller than the diameter of the middle, and the difference is adapted to the thickness of the positioning ring 7.

[0032] The groove 11 has the same form as the groove setting of the roller-type one-way clutch in the prior art, and its width increases slightly from surface a to surface b, and the roller 3 is located in the groove 11. Compared with the prior art, its difference is: first, the axis of the spring 6 and the perpendicular line from the center of the roller 3 to the b surface have a certain angle, that is, the fixed block 5 is closer to the outer side surface of the outer ring 1, and the spring 6 and the roller 3 are not located in the groove 11 at the same time. This can provide more space for the outer ring 1, and more grooves 11 can be opened, more rollers 3 can be added, and the stability of use can be improved; second, the roller 3 is inserted into the positioning ring 7. Since it will directly contact the annular surface of the inner ring 2 during use, it will wear out after long-term use. In this way, the roller 3 can be removed and replaced with a new roller 3 when it is worn; third, the shape of the inner ring 2 is different from that of the prior art. Through such a design, the middle area of ​​the inner ring 2 can contact the roller 3 during operation, while the two side areas will not directly contact the positioning ring 7.

[0033] The two side surfaces of the inner ring 2 are also sleeved on the fixing ring 4 to prevent separation.

[0034] The inner side surface of the outer ring 1 is also provided with an arc-shaped guide groove 12, and the contact surface between the fixed block 5 and the outer ring 1 is also provided with a spherical groove 13, and a ball 14 is provided in the spherical groove 13. The ball 14 partially passes through the spherical groove 13 and is located in the guide groove 12.

[0035] By adopting the above technical solution, a certain convenience can be provided for the installation and disassembly process.

[0036] The installation process is as follows: first, install a fixing ring 4 on one side of the outer ring 1 so that the ball 14 is located on the guide groove 12, then insert the roller 3 on the outer ring 9 on the fixing ring 4, slightly rotate the fixing ring 4 so that the roller 3 is close to the b-side 16, and put in the inner ring 2, then align the positioning ring 7 on the other fixing ring 4 with the roller 3, and install it, finally, slightly rotate the two fixing rings 4 again so that the holes for installing the first fixing bolt 8 on the outer ring 1 and the fixing ring 4 are aligned, and the first fixing bolt 8 is put in and tightened, so that the middle part of the inner ring 2 and the roller 3 are in the same plane, and the two sides are movably clamped in the fixing ring 4, so that the position of the inner ring 2 will not change.

[0037] An outer ring 9 is provided on both sides of the outer ring 1 , and the two outer rings 9 are fastened to the outer ring 1 by second fixing bolts 10 .

[0038] By adopting the above technical solution, a certain protection capability is provided to the fixing ring 4.

[0039] Example 2:

[0040] The difference from Example 1 is that the roller 3 and the positioning ring 7 can be clearance-fitted, so that the roller 3 can have a certain rotation ability when in use, reducing the friction between the roller 3 and the inner ring 2 and improving the service life.

[0041] Working principle: During inspection and maintenance, first unscrew the second fixing bolt 10 and remove the outer ring 9, then unscrew the first fixing bolt 8, remove the fixing ring 4, check and replace the roller 3, and then install it according to the above steps.

[0042] All standard parts used in this utility model can be purchased commercially, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as bolts, rivets, welding, etc. that are mature in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. In addition, the circuit connections adopt conventional connection methods in the existing technology and will not be described in detail here. Any matters not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0043] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined.

[0044] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0045] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0047] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A one-way clutch for an electric vehicle, comprising an outer ring (1) and an inner ring (2) sleeved on the center of the outer ring (1), wherein the outer ring (1) is provided with a groove (11), and a roller (3) is provided in the groove (11), characterized in that: The outer ring (1) is fastened with two sets of fixing rings (4) via first fixing bolts (8), and the fixing rings (4) are respectively located on both sides of the inner ring (2); A fixing block (5) is fixedly mounted on one side of the fixing ring (4) close to the inner ring (2), a spring (6) is provided on the fixing block (5), and a positioning ring (7) is fixedly mounted on the other end of the spring (6); Both ends of the roller (3) are respectively inserted into the positioning rings (7) on both sides of the inner ring (2).

2. The one-way clutch for an electric vehicle according to claim 1, characterized in that: The grooves (11) are distributed in a circumferential array on the inner side of the outer ring (1), the number of the rollers (3) is the same as the number of the grooves (11), and each of the rollers (3) is located in one of the grooves (11); Positioning rings (7) are installed at both ends of each roller (3).

3. The one-way clutch for an electric vehicle according to claim 1, characterized in that: The inner side surface of the outer ring (1) is also provided with an arc-shaped guide groove (12), and the contact surface between the fixed block (5) and the outer ring (1) is also provided with a spherical groove (13), and a ball (14) is provided in the spherical groove (13), and the ball (14) partially passes through the spherical groove (13) and is located in the guide groove (12).

4. The one-way clutch for an electric vehicle according to claim 1, characterized in that: An outer collar (9) is provided on both sides of the outer ring (1), and the two outer collars (9) are fastened to the outer ring (1) via second fixing bolts (10).

5. The one-way clutch for an electric vehicle according to claim 1, characterized in that: The diameters of the upper and lower sides of the inner ring (2) are smaller than the diameter of the middle part thereof, and the difference is adapted to the thickness of the positioning ring (7).

6. The one-way clutch for an electric vehicle according to claim 1, characterized in that: The groove (11) has an a surface (15) and a b surface (16), and a perpendicular line from the center of the roller (3) to the b surface (16) has an angle with the axis of the spring (6) in the groove (11) at that location.

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