Pneumatic clutch in compound transmission with motor

Abstract

The utility model provides a pneumatic clutch in composite transmission with a motor, which comprises an inner ring, a first transmission part connected to one end of the inner ring through a first bearing, a first cover plate connected to the other end of the inner ring through a second bearing, and a second transmission part arranged on the inner ring and capable of synchronously rotating with the inner ring, the second transmission part can be close to or far away from the first transmission part, and the outer ring is connected to the first cover plate; and a relatively closed transmission space is formed between the outer ring and the inner ring. The inner ring and the outer ring are arranged to form the relatively closed transmission space, and the transmission part performs meshing transmission in the transmission space, so that the sealing grade is improved, and the problem that dust and other foreign matters easily enter the pneumatic clutch to affect the working performance of the pneumatic clutch is solved. The two transmission pieces rotate in a meshed mode through the fluted discs on the end faces, combination is smooth, and teeth are not prone to being broken. The first cover plate can be directly used as a cover plate of the output end of the motor, so that the mounting structure of the motor and the clutch is compact, and the transmission precision can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to a pneumatic clutch that is compound-driven with a motor. Background Art

[0002] A clutch is a mechanical device used to control the connection and disconnection between the engine or motor and the transmission system. It plays a vital role in various mechanical equipment and systems, ensuring the flexibility and controllability of power transmission.

[0003] Under the trend of new energy, there are now many electric motors as the power, especially dual-output occasions. The dual-output motor needs to achieve dual control function, so it is necessary to install clutches on both sides. The known inherent clutch is a friction plate type, which is large in size. If the clutch is installed on the motor shaft, it will lead to a large installation space, high cost, and complicated installation. At the same time, long-term use can easily cause damage to the motor bearings, poor sealing level of the clutch, and easy water ingress.

[0004] To address the issues of friction plate clutches, such as large size, large installation space, high cost, and complex installation, pneumatic clutches have also been developed. For example, Patent Application No. 201310489283.6 discloses a pneumatic clutch. However, this pneumatic clutch utilizes a side-mounted internal and external tooth meshing transmission, which is prone to tooth clashing. Furthermore, this pneumatic clutch does not address the issue of poor sealing, which allows dust and other foreign matter to easily enter the pneumatic clutch, affecting its performance. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a pneumatic clutch that is compound-driven with a motor to solve the above-mentioned problem.

[0006] The utility model adopts the following scheme:

[0007] The present application provides a pneumatic clutch with a composite transmission with a motor, comprising an inner ring, a first transmission member connected to one end of the inner ring via a first bearing, a first cover plate connected to the other end via a second bearing, and a second transmission member disposed on the inner ring and capable of rotating synchronously with the inner ring, wherein the second transmission member can move closer to or farther from the first transmission member.

[0008] It also includes an outer ring connected to the first cover plate; a relatively closed transmission space is formed between the outer ring and the inner ring; the first transmission member and the second transmission member are engaged and transmitted in the transmission space through the toothed disc on the end face.

[0009] Furthermore, the cross section of the first transmission member along its axis is Y-shaped as a whole, one end of which is a transmission shaft, and the other end is connected to the inner ring through the first bearing.

[0010] Furthermore, it also includes a second cover plate, which is connected to the transmission shaft through a third bearing, and an oil seal is provided on the outside of the third bearing between the second cover plate and the transmission shaft; the outer ring is connected between the first cover plate and the second cover plate.

[0011] Furthermore, the outer ring is sealed to the first cover plate and the second cover plate via a sealing ring.

[0012] Furthermore, when the second transmission member is away from the first transmission member, a distance between the second transmission member and an outer end surface of the upper gear disk of the first transmission member is 0.6 mm-1 mm.

[0013] Furthermore, the angle of the meshing teeth of the gear discs on the end surfaces of the first transmission member and the second transmission member is 50-70 degrees, and the depth is 1mm-2.5mm.

[0014] Furthermore, a sliding groove is provided on the first cover plate placed in the transmission space, and an air intake channel connected to the sliding groove is provided on the first cover plate; a transition ring is provided in the sliding groove, which can push the second transmission member close to the first transmission member under the action of external air pressure.

[0015] Furthermore, one side of the transition ring can be slidably disposed in the sliding groove, and the other side is connected to the second transmission member through a fourth bearing.

[0016] Furthermore, a guide pin is provided on the first cover plate along its axial direction, and a guide groove adapted to the guide pin is provided on the transition ring.

[0017] Furthermore, an elastic member is included; a retaining ring is fixed on the inner ring, and the elastic member is arranged between the retaining ring and the second transmission member.

[0018] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0019] 1. A relatively closed transmission space is formed by the arrangement of the inner ring and the outer ring. The transmission parts are engaged and transmitted in the transmission space, which improves the sealing level and prevents foreign matter such as dust from easily entering the pneumatic clutch and affecting its working performance.

[0020] 2. The two transmission parts are engaged and rotated through the toothed discs on the end faces, and the engagement is smooth and not prone to tooth jamming.

[0021] 3. The first cover plate can be directly used as the cover plate of the motor output end, making the installation structure of the motor and the clutch compact and also improving the transmission accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic cross-sectional view of a pneumatic clutch with a motor-compound transmission according to an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the first transmission member of a pneumatic clutch with a motor composite transmission according to an embodiment of the utility model. Figure 1 ;

[0025] Figure 3 This is a schematic diagram of the structure of the first transmission member of a pneumatic clutch with a motor composite transmission according to an embodiment of the utility model. Figure 2 ;

[0026] Figure 4 This is a schematic structural diagram of a second transmission member of a pneumatic clutch that is compound-driven with a motor according to an embodiment of the present utility model;

[0027] Figure 5 yes Figure 1 Schematic diagram of the enlarged structure of A in FIG;

[0028] Figure 6 yes Figure 1 Schematic diagram of the enlarged structure of B in FIG;

[0029] Icons: inner ring 1, first bearing 2, first transmission member 3, second bearing 4, first cover plate 5, second transmission member 6, transmission space 7, first gear disc 8, first step 9, second step 10, third bearing 11, second cover plate 12, oil seal 13, outer ring 14, first sealing ring 15, transition ring 16, intake channel 17, second sealing ring 18, third sealing ring 19, air chamber 20, fourth bearing 21, retaining ring 22, return spring 23, guide pin 24, hole card 25, shaft card 26, A-type key 27, transmission flange 28, vent plug 29, second gear disc 30, mounting groove 31. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Example

[0032] Combine Figures 1 to 6 As shown, this embodiment provides a pneumatic clutch with a composite transmission with a motor, including an inner ring 1, a first transmission member 3 connected to one end of the inner ring 1 through a first bearing 2, a first cover plate 5 connected to the other end through a second bearing 4, and a second transmission member 6 provided on the inner ring 1 and capable of rotating synchronously with the inner ring 1, and the second transmission member 6 can move closer to or farther away from the first transmission member 3.

[0033] It also includes an outer ring 14 connected to the first cover plate 5; a relatively closed transmission space 7 is formed between the outer ring 14 and the inner ring 1; the first transmission member 3 and the second transmission member 6 are engaged and transmitted in the transmission space 7 through the toothed disc on the end face.

[0034] The arrangement of the inner ring 1 and outer ring 14 creates a relatively enclosed transmission space 7, within which the transmission components engage and transmit power, enhancing the seal and preventing dust and other foreign matter from entering the pneumatic clutch and affecting its performance. The two transmission components engage and rotate via toothed discs on their end faces, ensuring smooth engagement and preventing tooth snagging. The first cover plate 5 can directly serve as a cover for the motor output, making the motor and clutch installation compact while also improving transmission accuracy.

[0035] Specifically, if Figures 1 to 4As shown, in this embodiment, the cross-section of the first transmission member 3 along its axis is Y-shaped as a whole, one end of which is a transmission shaft, and the other end is connected to the inner ring 1 through the first bearing 2, and a first gear disc 8 is provided on the end face of the other end; one end of the second transmission member 6 is provided with a second gear disc 30 adapted to the first gear disc 8. The transmission shaft includes a first step 9 and a second step 10, and the first step 9 is connected to a second cover plate 12 through a third bearing 11, and an oil seal 13 is provided on the outside of the third bearing 11 between the second cover plate 12 and the first step 9; the outer ring 14 is connected between the first cover plate 5 and the second cover plate 12, and is sealed by a first sealing ring 15. A relatively closed transmission space 7 is formed between the inner ring 1 and the outer ring 14 to prevent foreign matter such as dust from easily entering the pneumatic clutch and affecting its working performance. As shown Figure 6 As shown, the first cover plate 5 is positioned within the transmission space 7 and is provided with a sliding groove. The first cover plate 5 is also provided with an air intake passage 17 connected to the sliding groove. A transition ring 16 is positioned within the sliding groove, capable of moving along the axis of the inner ring 1. One side of the transition ring 16 is sealed against the sliding groove by a second sealing ring 18 and a third sealing ring 19. An air chamber 20 connected to the air intake passage 17 is formed between the end face of the transition ring 16 and the bottom surface of the sliding groove. The other side of the transition ring 16 is connected to the second transmission member 6 via a fourth bearing 21. When air pressure is applied to the air chamber 20 via the air intake passage 17, the transition ring 16, under the action of the air pressure, pushes the second transmission member 6 toward the first transmission member 3, achieving meshing transmission. A vent plug 29 is also provided on the outer ring 14 for exhausting air from the transmission space 7. A retaining ring 22 is fixed to the inner ring 1, and a mounting groove 31 is provided on the second transmission member 6. A return spring 23 is interposed between the retaining ring 22 and the mounting groove 31. When the external air pressure input is turned off, the elastic force of the return spring 23 moves the second transmission member 6 away from the first transmission member 3, releasing the transmission. The above-mentioned configuration of the oil seal 13 and the sealing ring at each interface achieves an improved overall dust and water resistance rating, achieving an IP65 waterproof rating through actual testing.

[0036] Preferably, a guide pin 24 is provided on the first cover plate 5 along its axial direction, and a guide groove adapted to the guide pin 24 is provided on the transition ring 16. The setting of the guide pin 24 can guide the transition ring 1, while preventing the transition ring 16 from rotating with the first transmission member 3, thereby reducing the wear of the sealing ring and the wear between the mating surfaces of the structural parts.

[0037] In this embodiment, if Figure 5As shown, when the second transmission member 6 is away from the first transmission member 3, the distance a between the outer end surfaces of the first and second gear plates 8 and 30 is 0.6 mm to 1 mm, enabling rapid clutch response. The meshing teeth on the first and second gear plates 8 and 30 have an angle of 50 to 70 degrees and a depth of 1 mm to 2.5 mm, allowing for smoother engagement of the gear plates on the two transmission members and effectively preventing tooth clashing.

[0038] It should be noted that the first bearing 2, the second bearing 4 and the third bearing 11 are all limited by hole clips 25 and / or shaft clips 26 to prevent the bearings from sliding or falling off.

[0039] The second step 10 of the clutch's transmission shaft is connected to a transmission flange 28 via an A-shaped key 27. This transmission flange 28 is used to connect to the universal joint, thereby driving the load. The first cover plate 5 can directly serve as the cover for the motor's output end. The motor's output shaft is keyed to the inner ring 1, making the motor and clutch installation compact and improving transmission accuracy.

[0040] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention fall within the protection scope of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0043] 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.

[0044] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

Claims

1. A pneumatic clutch with a combined transmission and a motor, comprising an inner ring, a first transmission member connected to one end of the inner ring via a first bearing, a first cover plate connected to the other end via a second bearing, and a second transmission member disposed on the inner ring and capable of rotating synchronously with the inner ring, wherein the second transmission member can move toward or away from the first transmission member, characterized in that: It also includes an outer ring connected to the first cover plate; a relatively closed transmission space is formed between the outer ring and the inner ring; the first transmission member and the second transmission member are engaged and transmitted in the transmission space through the toothed disc on the end face.

2. The pneumatic clutch with motor composite transmission according to claim 1, characterized in that: The cross section of the first transmission member along its axis is Y-shaped as a whole, one end of which is a transmission shaft, and the other end is connected to the inner ring through the first bearing.

3. The pneumatic clutch with motor composite transmission according to claim 2, characterized in that: It also includes a second cover plate, which is connected to the transmission shaft through a third bearing, and an oil seal is provided on the outside of the third bearing between the second cover plate and the transmission shaft; the outer ring is connected between the first cover plate and the second cover plate.

4. The pneumatic clutch with motor composite transmission according to claim 3, characterized in that: The outer ring is sealed to the first cover plate and the second cover plate via a sealing ring.

5. The pneumatic clutch with motor composite transmission according to claim 1, characterized in that: When the second transmission member is away from the first transmission member, the distance between the second transmission member and the outer end surface of the upper gear disk of the first transmission member is 0.6 mm-1 mm.

6. The pneumatic clutch with motor composite transmission according to claim 4, characterized in that: The angle of the meshing teeth of the gear discs on the end surfaces of the first transmission member and the second transmission member is 50-70 degrees, and the depth is 1mm-2.5mm.

7. The pneumatic clutch with motor composite transmission according to claim 1, characterized in that: A sliding groove is provided on the first cover plate placed in the transmission space, and an air intake channel connected to the sliding groove is provided on the first cover plate; a transition ring is provided in the sliding groove, which can push the second transmission member close to the first transmission member under the action of external air pressure.

8. The pneumatic clutch with motor composite transmission according to claim 7, characterized in that: One side of the transition ring is slidably disposed in the sliding groove, and the other side is connected to the second transmission member via a fourth bearing.

9. The pneumatic clutch with motor composite transmission according to claim 8, characterized in that: The first cover plate is provided with a guide pin along its axial direction, and the transition ring is provided with a guide groove adapted to the guide pin.

10. The pneumatic clutch with motor composite transmission according to any one of claims 7 to 9, characterized in that: It also includes an elastic member; a retaining ring is fixed on the inner ring, and the elastic member is arranged between the retaining ring and the second transmission member.

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