Clutch for small high-speed low-load transmission

Abstract

The utility model relates to the technical field of clutches, in particular to a clutch for small-sized high-speed low-load transmission. According to the technical scheme, the ball bearing comprises a ball retainer, a first ball groove is formed in the inner ring face of the ball retainer, and balls are arranged in the first ball groove; the transmission shaft is movably connected with the ball retainer in a sleeving mode, and a second ball groove connected with the balls in a clamped mode is formed in the outer wall of the transmission shaft; a connecting assembly is arranged on the outer wall of the ball retainer in a clamped mode. Rigid contact among parts can be reduced, so that friction loss is reduced, influences of vibration and impact on all the parts are relieved, the overall service life of the clutch is effectively prolonged, the whole clutch does not need to be disassembled, fault parts can be independently maintained or replaced, the maintenance process is simplified, maintenance difficulty and cost are reduced, and the service life of the clutch is prolonged. And the effect of convenient maintenance is achieved.

Description

Technical Field

[0001] This utility model relates to the field of clutch technology, and in particular to a clutch for small, high-speed, low-load transmission. Background Technology

[0002] In the field of small-scale, high-speed, low-load transmission, such as precision instruments and small automated equipment, the clutch, as a key component for power transmission and separation, directly affects the stability and service life of the entire transmission system. Existing clutches, when coupled with a shaft, often concentrate force on the contact surface due to rigid contact between components. Because the force-bearing surface is extremely small at the moment of contact, stress concentration is significant. Furthermore, traditional interlocking clutches experience significant impact force due to the rigid connection at the moment of engagement. During high-speed operation, the vibrations and impacts generated by the system directly affect the clutch components. Over time, this can lead to wear, deformation, and even breakage of parts, severely shortening the overall lifespan of the clutch, increasing maintenance costs and downtime. Moreover, these clutches are often integrated or complex structures; when a component malfunctions and requires repair or replacement, the entire clutch often needs to be disassembled, requiring specialized tools and technicians. This not only makes maintenance cumbersome and time-consuming but also increases the difficulty and cost of maintenance. Therefore, this invention proposes a clutch for small-scale, high-speed, low-load transmission. Utility Model Content

[0003] The purpose of this invention is to address the problem that existing clutches in the background technology have rigid contact when coupled with a shaft, resulting in the force transmission being concentrated on the contact surface. The rigid connection at the moment of contact leads to a large impact force. During high-speed operation, the vibration and impact generated by the system directly affect the various components of the clutch. After long-term use, parts are prone to wear, deformation, and even breakage, severely shortening the overall lifespan of the clutch, increasing equipment maintenance costs and downtime. Furthermore, these clutches are often integrated or complex integrated structures; when a component malfunctions and needs repair or replacement, the entire clutch often needs to be disassembled, sometimes requiring specialized tools and technicians. This not only makes maintenance cumbersome and time-consuming but also increases maintenance difficulty and costs. The invention proposes a clutch for small, high-speed, low-load transmission. This clutch, when coupled with a shaft, can convert the contact between components into flexible contact, transforming some of the impact force into the force driving the ball bearings, thereby reducing the impact force between components and improving the clutch's lifespan.

[0004] The technical solution of this utility model is as follows: a clutch for small high-speed low-load transmission, comprising: a ball retainer, wherein a first ball groove is formed on the inner ring surface of the ball retainer, and a ball is disposed inside the first ball groove; a drive shaft, wherein the drive shaft is movably sleeved with the ball retainer, and a second ball groove is formed on the outer wall of the drive shaft to engage with the ball; and a connecting component is disposed on the outer wall of the ball retainer.

[0005] Optionally, the connecting assembly includes an outer connector and a rear structural support. The inner ring surfaces of the outer connector and the rear structural support are respectively provided with grooves. A boss is snapped into the inside of the groove. The boss is fixedly connected to the outer wall of the drive shaft. The outer connector and the rear structural support are connected by a rubber gasket. A rubber block is also provided between the outer connector and the rear structural support.

[0006] Optionally, the front end face of the external connector has multiple through holes.

[0007] Optionally, the outer connector has a first slot for positioning the rubber gasket on the side facing the rubber gasket, and a portion of the rubber gasket is embedded in the first slot.

[0008] Optionally, the rear structural support body has a second slot adapted to the rubber pad on one side facing the rubber pad, and the other side of the rubber pad is embedded in the second slot.

[0009] Optionally, the outer dimensions of the rubber gasket are adapted to the dimensions of the end faces of the outer connector and the rear structural support, and the rubber gasket is provided with a through groove for the rubber block to pass through.

[0010] In summary, this application includes at least one of the following beneficial technical effects:

[0011] This utility model utilizes the ball-bearing structure between the ball retainer and the drive shaft to convert part of the force exerted when the clutch is coupled to the shaft into relative rolling of the balls. At the same time, it uses elastic parts such as rubber pads and rubber blocks between the outer connecting body and the rear structural support body to reduce rigid contact between components, thereby reducing friction loss, mitigating the impact of vibration and impact on various components, and effectively improving the overall life of the clutch.

[0012] Furthermore, this utility model utilizes a modular structure composed of a ball bearing cage, a drive shaft, and modules including an external connector and a rear structural support to enable independent disassembly and assembly of each component. When a component malfunctions, it is not necessary to disassemble the entire clutch; the faulty component can be repaired or replaced individually, thereby simplifying the maintenance process, reducing maintenance difficulty and cost, and achieving the effect of easy maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a clutch used for small, high-speed, low-load transmission.

[0014] Figure 2 A schematic diagram of the disassembled structure of the ball cage and drive shaft;

[0015] Figure 3 A schematic diagram of the sleeve structure of the ball cage and the drive shaft;

[0016] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure;

[0017] Figure 5 for Figure 1 A schematic diagram of the split structure;

[0018] Figure 6 for Figure 3 A schematic diagram of the dissected structure.

[0019] Figure label:

[0020] 1. Ball cage; 2. First ball groove; 3. Ball; 4. Drive shaft; 5. Second ball groove;

[0021] 6. Connecting component; 61. External connector; 62. Rear structural support; 63. Groove; 64. Boss; 65. Rubber gasket; 66. Rubber block;

[0022] 7. Through hole; 8. First slot; 9. Second slot; 10. Through groove. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0024] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. 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 claimed invention, but merely to illustrate selected embodiments of the invention.

[0025] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example

[0029] like Figures 1 to 6 As shown, the present invention proposes a clutch for small high-speed low-load transmission, comprising: a ball retainer 1, wherein a first ball groove 2 is formed on the inner ring surface of the ball retainer 1, the center of the first ball groove 2 on the ball retainer 1 is located above the contour line, and a ball 3 is provided inside the first ball groove 2 to prevent the ball 3 from falling out; a drive shaft 4, which is movably connected to the ball retainer 1, and a second ball groove 5 is formed on the outer wall of the drive shaft 4 to engage with the ball 3, thereby ensuring that the drive shaft 4 is connected to the ball 3 through the second ball groove 5, which facilitates the transmission and disconnection of power.

[0030] like Figure 1 and Figure 5As shown, a connecting assembly 6 is snapped onto the outer wall of the ball cage 1. The connecting assembly 6 includes an outer connecting body 61 and a rear structural support body 62. The front end face of the outer connecting body 61 has multiple through holes 7, which are used for fixed connection with external equipment to ensure stable power input or output. The inner annular surfaces of the outer connecting body 61 and the rear structural support body 62 are respectively provided with grooves 63. A boss 64 is snapped onto the inside of the groove 63. The boss 64 is fixedly connected to the outer wall of the drive shaft 4. Through the snap-fit ​​cooperation between the groove 63 and the boss 64, the relative rotation between the connecting assembly 6 and the drive shaft 4 can be restricted during transmission, ensuring the accuracy of power transmission. The outer connecting body 61 and the rear structural support body 62 are connected by a rubber gasket 65. The rubber gasket 65 can buffer and dampen the vibration when the clutch is running at high speed, reducing noise and wear of parts caused by vibration. A rubber block 66 is also provided between the outer connecting body 61 and the rear structural support body 62. The rubber block 66 enhances the elastic buffering capacity of the structure and can effectively cope with the instantaneous impact force under small high-speed and low-load conditions.

[0031] Furthermore, the outer connector 61 has a first slot 8 on the side facing the rubber pad 65 for positioning the rubber pad 65, and a portion of the rubber pad 65 is embedded in the first slot 8. The rear structural support 62 has a second slot 9 on the side facing the rubber pad 65 that is adapted to the rubber pad 65, and the other side of the rubber pad 65 is embedded in the second slot 9. Through the double slot positioning structure, the rubber pad 65 can be prevented from shifting or falling off during high-speed operation, ensuring stable performance of the cushioning effect, which is very suitable for the needs of high-speed operation.

[0032] Furthermore, the outer dimensions of the rubber gasket 65 are adapted to the dimensions of the end faces of the outer connector 61 and the rear structural support 62. The adaptation of the rubber gasket 65 to the dimensions of the mating end faces ensures that the pressure between the outer connector 61 and the rear structural support 62 is evenly distributed under low-load transmission. In addition, the rubber gasket 65 has a through groove 10 for the rubber block 66 to pass through, which provides an installation channel for the rubber block 66, enabling the rubber block 66 to accurately play an auxiliary buffering role and jointly improve the stability and service life of the clutch in small, high-speed, low-load transmission environments.

[0033] In this embodiment, before startup, the drive shaft 4 is in an idling state, while the ball retainer 1 and its engaging external connector 61 and rear structural support 62 module are stationary. At this time, the operator pushes the ball retainer 1 axially using the drive mechanism. As the pushing action proceeds, the balls 3 in the first ball groove 2 on the inner annular surface of the ball retainer 1 gradually approach the second ball groove 5 on the outer wall of the drive shaft 4. When the ball retainer 1 is pushed to the preset position, the balls 3 are precisely embedded in the pre-made grooves of the second ball groove 5. The rotational force of the drive shaft 4 is transmitted to the ball retainer 1 through the balls 3, causing the entire external connector 61 and rear structural support 62 module to begin rotating synchronously.

[0034] During this process, the impact force generated at the moment of contact between the ball 3 and the second ball groove 5 is converted into rolling friction through the relative rolling of the ball 3 within the first ball groove 2 and the second ball groove 5, avoiding direct collision during rigid engagement. This disperses the stress that might have been concentrated at the contact point onto the rolling trajectory of the ball, significantly reducing stress concentration. Simultaneously, the rubber gasket 65 and rubber block 66 between the outer connector 61 and the rear structural support 62 begin to compress slightly due to the initial stress on the module, absorbing some of the rigid impact from the axial thrust through elastic deformation, thus establishing a buffer foundation for subsequent stable operation.

[0035] After engagement, the clutch enters a stable operating state. The drive shaft 4 is rigidly coupled to the ball cage 1 through the balls 3, driving the outer connecting body 61 and the rear structural support body 62 module to rotate synchronously.

[0036] During operation, the vibration generated by high-speed rotation is transmitted to the boss 64 through the drive shaft 4. The boss 64 engages with the groove 63 on the inner ring surface of the outer connector 61 and the rear structural support 62, allowing the vibration to be further transmitted to the rubber gasket 65 and rubber block 66 between the outer connector 61 and the rear structural support 62. The rubber gasket 65 is stabilized by the positioning of the first groove 8 and the second groove 9. Its overall deformation and the elastic expansion and contraction of the rubber block 66 work together to convert rigid vibration into elastic deformation energy, reducing the rigid collision between the outer connector 61 and the rear structural support 62. At the same time, the continuous rolling of the ball bearings 3 in the first ball bearing groove 2 and the second ball bearing groove 5 converts sliding friction into rolling friction. Combined with the precise fit of the modular structure components, friction loss is significantly reduced.

[0037] When transmission needs to be stopped, the drive mechanism pulls the ball cage 1 axially out, and the balls 3 gradually separate from the second ball groove 5 of the drive shaft 4, entering the separation process. At the moment when they are about to completely separate, the outer wall of the drive shaft 4 makes brief contact with the balls 3. At this time, the rotational impact force of the drive shaft 4 is converted into relative rolling of the balls 3, avoiding stress concentration caused by rigid collision and protecting the surfaces of the balls 3 and the drive shaft 4 from damage.

[0038] As the ball retainer 1 completely retracts, the outer connector 61 and the rear structural support 62 module stop rotating. The rubber pad 65 and the rubber block 66 release the stored deformation energy through elastic rebound, further buffering the residual shock of the separation process and ensuring that the entire separation action is smooth and shock-free.

[0039] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A clutch for small, high-speed, low-load transmission, characterized in that, include: A ball retainer (1) has a first ball groove (2) on its inner ring surface, and a ball (3) is disposed inside the first ball groove (2). The drive shaft (4) is movably connected to the ball retainer (1), and the outer wall of the drive shaft (4) is provided with a second ball groove (5) that engages with the ball (3). A connecting component (6) is snapped onto the outer wall of the ball cage (1); The connecting assembly (6) includes an outer connector (61) and a rear structural support (62). The inner ring surfaces of the outer connector (61) and the rear structural support (62) are respectively provided with grooves (63). A boss (64) is snapped into the inside of the groove (63). The boss (64) is fixedly connected to the outer wall of the drive shaft (4). The outer connector (61) and the rear structural support (62) are connected by a rubber gasket (65). A rubber block (66) is also provided between the outer connector (61) and the rear structural support (62).

2. The clutch for small, high-speed, low-load transmission according to claim 1, characterized in that, The front end face of the external connector (61) has multiple through holes (7).

3. A clutch for small, high-speed, low-load transmission according to claim 1, characterized in that, The outer connector (61) has a first slot (8) for positioning the rubber pad (65) on the side facing the rubber pad (65), and a part of the rubber pad (65) is embedded in the first slot (8).

4. A clutch for small, high-speed, low-load transmission according to claim 1, characterized in that, The rear structural support (62) has a second slot (9) on one side facing the rubber pad (65) that is adapted to the rubber pad (65), and the other side of the rubber pad (65) is embedded in the second slot (9).

5. A clutch for small, high-speed, low-load transmission according to claim 1, characterized in that, The outer dimensions of the rubber pad (65) are adapted to the dimensions of the end faces of the outer connector (61) and the rear structural support (62), and the rubber pad (65) has a through groove (10) for the rubber block (66) to pass through.

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