A dual function transmission structure

Abstract

The utility model relates to mechanical drive technical field discloses a transmission structure with double function, this transmission structure passes through the double function integration of power transmission flexible switching and executing piece stable locking, has simplified the structure, has promoted the performance, and the wide application range is strong and practical. It includes transmission shaft, and transmission shaft is set up with drum piece and both clutch connections, and the clutch piece is set up on the drum piece, and the clutch piece can slide horizontally on the drum piece and is linked with the drum piece, and the spring piece is still fixedly set up on the drum piece, and the spring piece is set up with the outer ring outside, and the outer ring is fixedly arranged to be able to cooperate with the spring piece, when the clutch piece and spring piece are in the separation state, the spring piece can move in the outer ring, when the clutch piece and spring piece are in the engagement state, the spring piece and the outer ring produce friction braking, and the clutch piece can be locked.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and more specifically, to a transmission structure with dual functions. Background Technology

[0002] In the field of mechanical transmission, especially in precision control scenarios (such as medical bionic machinery and automated equipment), extremely high requirements are placed on the flexibility, stability, and controllability of transmission structures. Existing transmission devices often suffer from the problem of limited functionality: most structures can only achieve unidirectional power transmission or locking in a single state, making it difficult to simultaneously meet the dual requirements of "flexible switching of power transmission" and "precise locking of actuators".

[0003] For example, in the joint control of medical bionic machines, traditional transmission structures typically require independent power switching and locking devices, resulting in a complex and bulky overall structure. Furthermore, when multiple devices work together, response delays can easily occur, affecting the motion accuracy of the mechanical joint. In addition, while some integrated transmission structures attempt to combine these two functions, they suffer from low power transmission efficiency and insufficient locking reliability—when the actuator needs to remain fixed, slippage or jamming often occurs due to poor matching between the braking structure and the transmission components, severely restricting the application of the equipment under high-precision conditions. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose a transmission structure with dual functions.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A dual-function transmission structure includes a drive shaft, on which a rotating drum is sleeved and engaged / disengaged; a clutch is sleeved on the rotating drum, and the clutch can slide horizontally on the rotating drum and move in conjunction with the rotating drum; a spring is also fixedly sleeved on the rotating drum, and an outer ring is sleeved on the outside of the spring, the outer ring being fixedly positioned to cooperate with the spring; when the clutch and the spring are in a disengaged state, the spring can move within the outer ring, and when the clutch and the spring are in an engaged state, the spring and the outer ring generate friction braking, and the clutch can be locked.

[0006] Furthermore, in the above solution, when the drive shaft and the drum are in a separated state, the drum does not move with the drive shaft; when they are in a connected state, the drum can move with the drive shaft.

[0007] Furthermore, the above solution includes a bushing for mounting a clutch component. The bushing is fitted onto the drive shaft and is engaged with the drive shaft. A drum for mounting a spring component is fixedly mounted on the bushing. A limiting platform is formed on one side of the drum to limit and block the side of the spring component. A slot for engaging the clutch component is provided along its axial direction.

[0008] Furthermore, the above solution includes a sleeve wheel fitted on a bushing, with a clutch plate fixedly provided on one side of the sleeve wheel for engaging with the slot, so that the clutch plate can be linked with the drum under the limitation of the slot, and when the clutch plate is partially engaged with the slot, it is in a separated state from the spring component, and after the entire clutch plate is engaged with the slot, it is in an engaged state with the spring component to perform braking.

[0009] Furthermore, the above solution includes an external rope or chain connecting the spool.

[0010] Furthermore, the above solution includes a spring body fixedly sleeved on the drum, with a bend at each end of the spring body for connecting into the slot, and when the bend contacts the clutch plate and is resisted by the clutch plate, the spring body and the outer ring are braked by friction.

[0011] Furthermore, in the above solution, when the elbow is subjected to resistance, the spring body expands outward.

[0012] Furthermore, in the above solution, the elbow and the spring body are integrally formed.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a clutch-connection design between the drive shaft and the drum component to precisely control whether the drum component moves in tandem with the drive shaft according to the operating conditions. When the two are separated, the drum component remains stationary, preventing unrelated power transmission from interfering with the system. When the two are engaged, power can be efficiently transmitted to the drum component, driving the operation of subsequent components. This design significantly improves the adaptability of the transmission system and can meet the flexible control requirements for power on / off under different operating conditions.

[0014] Furthermore, by utilizing the engagement state of the clutch and spring components, combined with the frictional braking effect between the spring and the fixed outer ring, reliable locking of the clutch can be achieved. When the clutch and spring are separated, the spring can rotate freely within the outer ring without affecting the transmission process. When they are engaged, the frictional braking generated between the spring and the outer ring quickly fixes the clutch, effectively preventing displacement or wobbling of the actuator under stress. Compared to traditional braking structures, this design offers faster locking response and higher stability, significantly improving the reliability of the system under static or load conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the clutch engagement and disengagement states. Figure 3 This is a schematic diagram showing the engagement state of the clutch and spring components; Figure 4 This is a schematic diagram showing the spring component separated from the outer ring. Figure 5 This is a schematic diagram showing the engagement state between the spring component and the outer ring; Figure 6 This is a schematic diagram of the overall structure of the drum component; Figure 7 This is a schematic diagram of the overall structure of the clutch assembly; Figure 8 This is a schematic diagram of the overall structure of the spring component; The components include: 1. Drive shaft; 2. Drum assembly; 21. Bushing; 22. Drum; 221. Limiting platform; 222. Slot; 3. Clutch assembly; 31. Sleeve wheel; 32. Clutch disc; 4. Spring assembly; 41. Spring body; 42. Elbow; 5. Outer ring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments: A transmission structure with dual functions, see attached diagram. Figure 1 - Appendix Figure 5 As shown, the device includes a drive shaft 1, on which a rotating drum 2 is mounted and engaged / disengaged. When disengaged, the rotating drum 2 does not move with the drive shaft 1; conversely, when engaged, it moves with the drive shaft 1. A clutch 3 is mounted on the rotating drum 2 and can slide horizontally on it, moving with it. During operation, the clutch 3 can connect to an external actuator such as a rope or chain, allowing the actuator to move with it. Additionally, a spring 4 is fixedly mounted on the rotating drum 2, with an outer ring 5 fixedly positioned to engage with it. When the clutch 3 and spring 4 are disengaged, the spring 4 rotates within the outer ring 5; conversely, when engaged, friction braking occurs between the spring 4 and the outer ring 5, locking the clutch 3.

[0017] In this design, on the one hand, the clutch connection between the drive shaft 1 and the drum 2 can control whether the drum 2 moves in tandem with the drive shaft 1, thus achieving flexible switching of power transmission; on the other hand, the engagement state of the clutch 3 and the spring 4 can be locked by the friction braking between the spring 4 and the outer ring 5, which increases the stability and controllability of the structure. This dual-function design enables the transmission structure to meet the usage requirements well under different working conditions.

[0018] Specifically, for the above scheme, refer to the appendix. Figure 2 and attached Figure 6 As shown, the drum component 2 includes a bushing 21 for mounting the clutch component 3. The bushing 21 is sleeved on the transmission shaft 1 and is engaged with the transmission shaft 1 so that the bushing 21 does not move with the transmission shaft 1 when the two are separated, and conversely, the bushing 21 can move with the transmission shaft 1 when the two are engaged. A drum 22 for mounting the spring component 4 is fixedly mounted on the bushing 21. A limiting platform 221 for limiting and blocking the side of the spring component 4 is formed on one side of the drum 22. A slot 222 for receiving the clutch component 3 is provided along its axial direction so that the drum 22 can drive the clutch component 3 to move.

[0019] In this design, bushing 21 enables a clutch connection with drive shaft 1, providing a basis for power transmission switching between drum 2 and drive shaft 1; the limiting platform 221 on drum 22 effectively limits and blocks the side of spring 4, ensuring the stability of spring 4's installation position; the slot design 222 provides conditions for the engagement and linkage of clutch 3, enabling drum 22 to reliably drive clutch 3 to move; the advantage of this structure is that each component has a strong functional focus and tight fit, ensuring that drum 2 can stably play its role in transmitting power and installing other components in the overall structure.

[0020] Specifically, for the above scheme, refer to the appendix. Figure 2 and attached Figure 7 As shown, the clutch 3 includes a sleeve wheel 31 sleeved on the bushing 21. During implementation, the sleeve wheel 31 can be connected to an actuator such as a rope or chain. A clutch plate 32 for engaging the slot 222 is fixedly provided on one side of the sleeve wheel 31 so that the clutch plate 32 can be linked with the drum 22 under the limit of the slot 222. When the clutch plate 32 is partially engaged with the slot 222, it is in a separated state from the spring 4. After the entire clutch plate is engaged with the slot 222, it is in an engaged state with the spring 4, thus achieving the braking purpose.

[0021] In this design, the clutch 3's sleeve wheel 31 can be externally connected to actuators such as ropes or chains, enabling linkage with external actuators and expanding the application range of the structure. The different degrees to which the clutch plate 32 engages with the slot 222 correspond to the separation and engagement states with the spring 4. This design makes the switching of the clutch 3's working state simple and intuitive, and easy to operate. Its advantage lies in achieving the state switching with the spring 4 through a simple structural design, thereby controlling the braking function, with rapid and reliable response.

[0022] Specifically, for the above scheme, refer to the appendix. Figure 2 and attached Figure 8 As shown, the spring component 4 includes a spring body 41 fixedly sleeved on the drum 22. Both ends of the spring body 41 are integrally formed with an elbow 42 for connecting into the slot 222. When the elbow 42 contacts the clutch plate 32 and is abutted by the clutch plate 32, it can generate an outward rotational force on the spring body 41, causing the spring body 41 to expand outward and abut against the outer ring 5 to generate greater friction, ultimately achieving the braking purpose.

[0023] In this design, the spring body 41 is fixedly sleeved on the drum 22, ensuring its own position stability; when the elbows 42 at both ends are abutted by the clutch plate 32, the spring body 41 can expand outward and generate friction braking with the outer ring 5; the advantage of this design is that it utilizes the elastic characteristics of the spring to achieve braking, the braking process is smooth, and the spring part 4 has a simple structure, low manufacturing cost, and good durability, and can play a stable braking role for a long time.

[0024] Specifically, this dual-function transmission structure achieves power transmission control and braking functions through the coordinated work of its components. Its core principle is based on the clutch connection and state switching between the components. The transmission shaft 1, as the power input component, controls whether the drum 2 receives power and rotates through the clutch connection with the bushing 21 in the drum 2. When the drum 2 rotates, it drives the clutch 3 to move together through the slot 222. When the clutch plate 32 of the clutch 3 is fully engaged in the slot 222 and abuts against the bend 42 of the spring 4, the spring 4 expands outward and generates friction with the fixed outer ring 5, thereby achieving the locking and braking of the clutch 3. The precise cooperation between the components forms an organic whole, which together realizes flexible control and reliable braking of power transmission.

[0025] In use, the operation is first determined by controlling the engagement / disengagement state of the drive shaft 1 and the bushing 21 in the drum 2, depending on whether the drum 2 needs to move in tandem with the drive shaft 1. When engaged, the drum 2 rotates with the drive shaft 1; when disengaged, it does not rotate. When the drum 2 rotates and drives the clutch 3, if the clutch 3 needs to be locked, the clutch plate 32 of the clutch 3 can be fully engaged in the slot 222 of the drum 22. At this time, the clutch plate 32 abuts against the bend 42 of the spring 4, causing the spring body 41 to expand outward and generate friction braking with the outer ring 5, thereby locking the clutch 3. If it is necessary to unlock, the clutch plate 32 can be partially engaged in the slot 222 and separated from the spring 4. The spring body 41 returns to its original state, the friction braking disappears, and the clutch 3 can move normally with the drum 2. Through this operation, the operating state of the transmission structure can be flexibly controlled according to actual working needs.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A transmission structure with dual functions, comprising a transmission shaft (1), characterized in that: A rotating drum (2) is fitted onto the drive shaft (1), and the two are engaged and disengaged. A clutch (3) is fitted on the drum component (2), and the clutch (3) can slide horizontally on the drum component (2) and move in conjunction with the drum component (2); A spring component (4) is also fixedly sleeved on the drum component (2), and an outer ring (5) is sleeved on the outside of the spring component (4). The outer ring (5) is fixedly set so as to cooperate with the spring component (4); When the clutch (3) and the spring (4) are in a disengaged state, the spring (4) can move within the outer ring (5). When the clutch (3) and the spring (4) are in an engaged state, the spring (4) and the outer ring (5) generate friction braking, and the clutch (3) can be locked. When the drive shaft (1) and the drum (2) are in a separated state, the drum (2) does not move with the drive shaft (1); when they are in a engaged state, the drum (2) can move with the drive shaft (1). The drum component (2) includes a bushing (21) for mounting the clutch component (3); The bushing (21) is sleeved on the transmission shaft (1) and is engaged and disengaged with the transmission shaft (1). A rotating drum (22) for installing the spring (4) is fixedly provided on the bushing (21). A limiting platform (221) for limiting and blocking the side of the spring (4) is formed on one side of the rotating drum (22). A slot (222) for connecting the clutch (3) is provided along its axial direction. The clutch (3) includes a bushing (31) sleeved on the bushing (21); A clutch plate (32) for engaging the slot (222) is fixedly provided on one side of the sleeve wheel (31) so that the clutch plate (32) can be linked with the drum (22) under the limit of the slot (222). When the clutch plate (32) is engaged in the slot (222) to a part, it is separated from the spring (4). After the entire clutch plate is engaged in the slot (222), it is engaged with the spring (4) to perform braking.

2. The transmission structure with dual functions according to claim 1, characterized in that: The spool (31) is connected to a rope or chain.

3. The transmission structure with dual functions according to claim 2, characterized in that: The spring component (4) includes a spring body (41) fixedly sleeved on the drum (22); Both ends of the spring body (41) are provided with elbows (42) for accessing the slot (222), and when the elbows (42) contact the clutch plate (32) and are abutted by the clutch plate (32), the spring body (41) and the outer ring (5) are braked by friction.

4. A transmission structure with dual functions according to claim 3, characterized in that: When the elbow (42) is subjected to resistance, the spring body (41) expands outward.

5. A transmission structure with dual functions according to claim 4, characterized in that: The elbow (42) and the spring body (41) are integrally formed.

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