A new type of bladder clutch device

Abstract

The present invention proposes a novel bladder clutch device. The device realizes the transmission and interruption of power through the engagement and separation between the transmission bladder and the transmission cylinder; the transmission bladder has a controllable deformation shape such as a spindle shape, and tooth-shaped protrusions are distributed on its outer surface. A flowable medium such as gas or liquid is contained inside the transmission bladder, and grooves adapted to the protrusions on the surface of the transmission bladder are distributed on the surface of the transmission cylinder in pre-contact with the transmission bladder; when the transmission bladder and the transmission cylinder approach each other relatively, the transmission bladder with a certain elasticity and strength will be deformed due to extrusion and engage with the transmission cylinder. When the transmission bladder moves away from the transmission cylinder, the transmission bladder returns to its original shape and disconnects from the transmission cylinder; compared with traditional gear or friction clutch devices, the present invention greatly reduces the impact during transmission and the speed fluctuation during the transmission process by using the flexibility of the bladder body, and reduces the precision requirements for part manufacturing and assembly. At the same time, the stability of the transmission process is improved through two methods of friction and meshing lock.

Description

Technical Field

[0001] The present invention belongs to the technical field of clutches, and particularly relates to a novel bladder clutch device. Background Art

[0002] Clutch devices are used to transmit and cut off power, and are required by a large number of mechanical devices. Existing clutches include electromagnetic clutches, magnetic powder clutches, friction clutches, and hydraulic clutches, etc. However, there are still many problems with existing types of clutch devices. For example, some clutch devices have an impact during the moment of power transmission, some clutch devices have a large amount of energy loss, some clutch devices cannot withstand large torques and thus have poor stability, and some clutch devices have high requirements for the machining and installation accuracy of components; most existing bladder clutches drive friction plates through the inflation and deflation of airbags to generate contact and separation, and then complete the transmission and cut-off of power. Their devices are not only complex, but also the airbags cannot rotate with the shaft due to the need for external pipelines, thus greatly limiting the application range of existing bladder clutch devices. Therefore, the above problems limit the practical application of existing clutch devices. Summary of the Invention

[0003] In order to overcome the problems of impact, energy loss, inability to transmit large torques, high precision requirements, complex structure, and small application range existing in existing clutch devices, the present invention proposes a novel bladder clutch device that simultaneously has anti-impact, high efficiency, adjustable torque, low precision requirements, simple structure, and wide application range.

[0004] The present invention is implemented by adopting the following technical solutions:

[0005] A novel bladder clutch device, characterized in that it includes a transmission cylinder, a transmission bladder, and a cylinder shaft and a bladder shaft respectively connected to the transmission cylinder and the transmission bladder;

[0006] The transmission bladder includes a reinforcement layer, which has a certain elasticity and strength, is used to support and stabilize the shape of the transmission bladder, and also makes the entire transmission bladder have a certain elasticity and strength. Therefore, when the transmission bladder is squeezed, it will produce an elastic deformation with a certain strength and return to its initial shape after the squeezing disappears;

[0007] The transmission bladder has an initial shape that deforms in a predetermined direction when squeezed, such as a spindle shape;

[0008] The transmission bladder can move relatively closer to the transmission cylinder, causing the transmission bladder to be gradually squeezed, and then the transmission bladder deforms, and the contact area with the transmission cylinder gradually increases until they are locked and transmitted to each other. At this time, the locking depends on friction, and there is not enough friction between the transmission bladder and the transmission cylinder when they are not squeezed, so they do not transmit power.

[0009] Furthermore, the surface of the transmission bladder is distributed with bladder teeth, and the surface of the transmission cylinder in pre-contact with the bladder teeth is distributed with protrusions and grooves adapted to the shape and size of the bladder teeth. Therefore, when the transmission bladder is deformed by extrusion to a certain extent, the bladder teeth will be embedded in the grooves of the transmission cylinder, forming a locking effect, making the transmission more stable.

[0010] Furthermore, either one or both of the edges of the bladder teeth and the protrusions have guiding structures, such as chamfers or rounded corners, etc., to guide the engagement of the bladder teeth with the protrusions and grooves, making the transmission more stable and smooth.

[0011] Furthermore, the transmission bladder includes a sealing layer, and the sealing layer plays a sealing role and forms a sealable cavity; the sealing layer and the strengthening layer can be separate multiple layers or can be integrated into one layer; the transmission bladder is equipped with a charging and discharging device, and the charging and discharging device is connected to the sealable cavity formed by the sealing layer; a flowable medium is injected inside the transmission bladder, so as to further adjust the elasticity and strength of the transmission bladder by changing the amount and type of the flowable medium.

[0012] Furthermore, a safety valve and a reservoir are installed on the charging and discharging device. When an emergency such as overload occurs and the pressure of the flowable medium in the sealable cavity rises sharply to a certain value, the safety valve will open, release the flowable medium, thereby cutting off the transmission and protecting the device from damage, and the overflowed flowable medium will enter the reservoir to avoid contaminating other components.

[0013] Furthermore, the transmission cylinder further includes a turntable, and the turntable is installed at the initial contact part of the transmission bladder and the transmission cylinder. The turntable can rotate relative to the transmission cylinder. Therefore, when the transmission bladder just starts to contact the turntable and the amount of deformation of the transmission bladder due to extrusion is not enough to lock the transmission between the transmission bladder and the transmission cylinder, the transmission bladder will drive the turntable to rotate relative to the transmission cylinder, thereby reducing the wear of the transmission bladder.

[0014] Furthermore, one or both of the cylinder shaft and the bladder shaft are connected to a transmission gear set with a transmission ratio not equal to one corresponding to each, so as to adjust the rotational speed and torque transmitted to the cylinder shaft and the bladder shaft. This function can be flexibly set according to the actual working conditions of the device and the elasticity and strength characteristics of the transmission bladder, so as to specifically achieve the functions of reducing speed and increasing torque or accelerating and reducing torque.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] A novel capsule clutch device uses a transmission capsule that is squeezed and deformed to contact and engage with a transmission cylinder to transmit power, and separates from the transmission cylinder by the rebound of the transmission capsule to cut off the power. Since the transmission capsule has a certain elasticity and strength, the flexibility of the transmission capsule in the torsional direction is utilized, and at the same time, by adjusting the relative approaching speed of the two to control the contact and engagement speed between the transmission capsule and the transmission cylinder, the impact during the instant of power transmission is greatly reduced, and the speed and torque fluctuations at the power input end or output end during the transmission process can also be well offset by the elasticity of the transmission capsule. Since the transmission between the transmission capsule and the transmission cylinder is a direct connection transmission, there is almost no energy loss. When the strength and elasticity of the transmission capsule are determined, the deformation amount of the transmission capsule can be controlled by adjusting the pressing degree of the transmission capsule, thereby controlling the contact and engagement degree between the transmission capsule and the transmission cylinder, and further controlling the maximum torque that can be transmitted between the two. This characteristic can also be used for overload protection. At the same time, because the transmission capsule has a certain elasticity, it has a certain self - adaptability. Firstly, it shows self - adaptability to the shape errors of the transmission capsule itself and the transmission cylinder, that is, even if there are certain shape errors between the two, it will not affect their contact and engagement. Secondly, it is the adaptability to the installation errors of the transmission capsule, transmission cylinder, capsule shaft, and cylinder shaft. That is, even if there are situations such as a certain degree of non - coaxiality or inclination among the four, it will not affect the normal operation of the entire device. Since the transmission capsule directly participates in the transmission by virtue of its own deformation, and the transmission capsule does not require an external device to continuously inject a medium to maintain pressure, and can complete deformation, recovery, and shape maintenance only relying on its own elasticity and strength or with the help of the existing flowable medium inside, this clutch device also has the advantages of simple structure and wide adaptability. By simply changing the amount and type of the flowable medium in the sealable cavity, various physical properties of the entire transmission capsule, including elasticity and strength, can be changed. This simple operation that can be achieved through a charging and discharging device can control the performance of the clutch device such as the overload limit and transmission sensitivity, which further expands the adaptability of this clutch device. The structural jamming force generated by the engagement of the capsule teeth and the grooves is essentially different from the transmission method of traditional capsule clutches that rely only on friction, and is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the system structure of an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of the transmission cylinder and the transmission capsule of the present invention before transmission;

[0019] Figure 3 It is a schematic diagram of the transmission cylinder and the transmission capsule of the present invention in meshed and locked transmission;

[0020] Figure 4 It is a schematic diagram of the external structure of the transmission capsule of the present invention;

[0021] Figure 5Schematic diagram of the internal structure of the drive bladder of the present invention;

[0022] Figure 6 Schematic diagram of the structure of the drive cylinder of the present invention.

[0023] Legend: 1: Cylinder shaft, 200: Drive cylinder, 300: Drive bladder, 4: Drive gear set, 5: Drive shaft, 6: Bladder shaft, 7: Guide rail, 8: Slide block, 9: Translation controller, 10: Base plate, 11: Support, 12: Flowable medium, 201: Protrusion, 202: Groove, 301: Bladder teeth, 302: Reinforcement layer, 303: Sealing layer, 304: Charging and discharging device, 305: Safety valve, 306: Reservoir.

[0024] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0025] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention. Obviously, the described ones are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0027] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, a physical connection or a wireless communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] As shown in the attached Figure 1-6 figure, in order to clearly show the principle and working process of the present invention, this embodiment gives a relatively typical implementation scheme, but this scheme does not represent all the schemes of the present invention.

[0031] Among them, the transmission cylinder 200 is connected to the cylinder shaft 1, the transmission bladder 300 is connected to the bladder shaft 6, and the transmission bladder 300 and the transmission cylinder 200 achieve power transmission through contact and meshing, and cut off the power through the separation of the two. Specifically, the transmission bladder 300 includes bladder teeth 301, a reinforcement layer 302, and also includes a sealing layer 303, a charging and discharging device 304, a safety valve 305, and a reservoir 306; the bladder teeth 301 are distributed on the surface of the reinforcement layer 302 and are in the shape of long strip protrusions, which are similar to long gear teeth and have high strength. The reinforcement layer 302 is used to support and stabilize the shape of the transmission bladder 300, and it has a certain strength and elasticity. Among them, the strength ensures the stability and durability of its shape, and the elasticity ensures its shape recovery ability. Due to the existence of the reinforcement layer 302, the entire transmission bladder 300 has a certain strength and elasticity.

[0032] When it is necessary to further adjust the strength and elasticity of the transmission bladder 300, the sealing layer 303 can be added. The sealing layer 303 and the reinforcement layer 302 can be separate multiple layers or can be integrated into one layer. Figure 5 As shown in the figure, they are two separate layers, where the sealing layer 303 adheres to the reinforcement layer 302 and forms a sealable cavity. The charging and discharging device 304 is connected to the sealable cavity formed by the sealing layer 303 and is installed at a position that does not affect the contact and meshing of the transmission bladder 300 and the transmission cylinder 200; a certain amount of flowable medium 12, including liquids and gases, is filled into the sealable cavity through the charging and discharging device 304. A safety valve 305 is also installed on the charging and discharging device 304. When an emergency such as overload occurs and the pressure of the flowable medium 12 in the sealable cavity rises sharply to a certain value, the safety valve 305 will open, release the flowable medium 12 to reduce the volume of the transmission bladder 300, thereby forcibly cutting off the transmission and protecting the clutch device from being damaged; and the overflowed flowable medium 12, especially the liquid, will enter the reservoir 306 to avoid polluting other components. The reservoir 306 preferably has elasticity so as to maintain a small volume when not storing the flowable medium 12, and thus does not interfere with the rotation of the transmission bladder 300.

[0033] The transmission bladder 300 also has an outer shape that deforms in a predetermined direction when squeezed. For example, in this embodiment, the transmission bladder 300 needs to expand outward to contact and engage with the transmission cylinder 200, so it presents a spindle shape with smaller ends and a larger middle. When the transmission bladder 300 needs to deform inward to contact the corresponding components, it can also be in a hollow concave shape. Therefore, the initial shape of the transmission bladder 300 should be adjusted according to the actual situation. As described above, after being squeezed by the transmission cylinder 200, the transmission bladder 300 will deform. After deformation, the surface of the transmission cylinder 200 in contact with the transmission bladder 300 is distributed with protrusions 201 and grooves 202 that are adapted to the shape and size of the bladder teeth 301 on the surface of the transmission bladder 300, so as to engage with the transmission cylinder 200 when the transmission bladder 300 further deforms. Any one or both of the bladder teeth 301 and the protrusions 201 have guiding structures such as chamfers or rounded corners at the edges to guide the bladder teeth 301 to engage with the protrusions 201 and the grooves 202, making the transmission more stable and smooth.

[0034] A turntable 203 is also installed on the transmission cylinder 200. The turntable 203 can rotate relative to the transmission cylinder 200. The turntable 203 first contacts the transmission bladder 300 and exerts pressure on the transmission bladder 300. When the amount of deformation of the transmission bladder 300 due to extrusion is not enough to lock the transmission bladder 300 with the transmission cylinder 200 for transmission, the transmission bladder 300 will drive the turntable 203 to rotate relative to the transmission cylinder 200, thereby reducing the wear of the transmission bladder 300.

[0035] As Figure 1 shown, a gear of the transmission gear set 4 is installed on the bladder shaft 6, and a transmission shaft 5 is installed on another gear that meshes with this gear. Thus, the transmission gear set 4 is composed of at least one pair of gear sets with a transmission ratio not equal to one, so as to play the role of adjusting the speed and torque of the bladder shaft 6.

[0036] As Figure 1 shown, the bladder shaft 6 is installed on the slider 8 through the support 11. The slider 8 is installed in cooperation with the guide rail 7, and the guide rail 7 is fixedly installed on the bottom plate 10. The translation controller 9 forms a connection relationship with the slider 8 that can transmit motion. The translation controller 9 can output translational motion and is fixedly installed on the bottom plate 10. At the same time, the transmission cylinder 200 is also installed on the bottom plate 10 through the support 11. Therefore, the transmission bladder 300 can move axially closer to and away from the transmission cylinder 200 under the control of the translation controller 9. Relatively, the transmission bladder 300 can also be fixed, and the transmission cylinder 200 can be moved closer to the transmission bladder 300. At this time, the installation of components such as the guide rail 7, the slider 8, and the translation controller 9 also needs to be adjusted accordingly.

[0037] The working process of the whole new capsule clutch device is as follows: in the illustrated scheme, assuming that the external power is input from the cylinder shaft 1, then in the working condition of the power cut-off of the clutch device, the transmission cylinder 200 keeps rotating, and the transmission capsule 300 keeps relatively still. When power needs to be transmitted, the translation controller 9 outputs a certain distance of translational motion at a certain speed, and the slider 8 drives the capsule shaft 6 to move, and then drives the transmission capsule 300 to move axially relative to the transmission cylinder 200; when the transmission capsule 300 is not in contact with the rotating disk 203 and in the initial stage of contact, the transmission capsule 300 does not contact the protrusion 201 and the groove 202 of the transmission cylinder 200, and the clutch device is still in the power cut-off state, but at this time, the rotating disk 203 keeps relative stillness in the rotation direction with the transmission capsule 300 under the action of friction, and keeps relative rotation with the transmission cylinder 200, thereby reducing the wear of the front end of the transmission capsule 300 caused by direct contact and relative rotation with the transmission cylinder 200.

[0038] As the transmission capsule 300 approaches the transmission cylinder 200 further, the deformation of the transmission capsule 300 caused by the squeezing of the turntable 203 gradually increases. Under the guidance of its own spindle shape, the axial length becomes smaller and the diameter becomes larger until it contacts with the protrusion 201. If the torque required by the load of the clutch device is small at this time, the transmission capsule 300 will rotate under the friction with the transmission cylinder 200 to achieve power transmission; if the torque required by the load of the clutch device is large, the friction between the transmission capsule 300 and the protrusion 201 is insufficient to achieve transmission, then the translation controller 9 further outputs translational motion, the transmission capsule 300 approaches the transmission cylinder 200 further, the transmission capsule 300 is further compressed, and its diameter becomes larger until the capsule teeth 301 on the surface of the transmission capsule 300 mesh with the grooves 202 of the transmission cylinder 200 and get stuck. At this time, the transmission capsule 300 rotates with the transmission cylinder 200 after a certain degree of twisting, and the entire clutch device achieves stable power transmission, and the twisting process is the process of mitigating the impact.

[0039] The transmission gear set 4 is meshed and transmitted under the drive of the capsule shaft 6, and the power is finally output to the external load by the transmission shaft 5. Since the edge of the capsule tooth 301 has a chamfer of a certain size, the capsule tooth 301 will easily mesh with the protrusion 201 and the groove 202 under the combined effects of rotation, expansion deformation and chamfer guidance. When it is necessary to interrupt the power, the translation controller 9 outputs the translation movement in the opposite direction, and the transmission capsule 300 will be relatively far away from the transmission cylinder 200. Because the transmission capsule 300 has a certain elasticity and strength, when the extrusion is withdrawn, it will restore and maintain the initial shape under the action of its own elasticity and strength, and the transmission capsule 300 will no longer contact the transmission cylinder 200, and the power is cut off. During the power cutting process, the turntable 203 still plays a role in reducing the wear of the transmission capsule 300.

[0040] When it is necessary to work under large load conditions, due to limitations of material properties and other reasons, the strength of the transmission bladder 300 alone may not be sufficient to maintain stable transmission. At this time, it is necessary to form a sealable cavity by adding a sealing layer 303, and a certain amount of flowable medium 12 is filled into the sealable cavity through the filling and discharging device 304. Since the reinforcing layer 302 has a certain strength, even after a certain amount of flowable medium 12 is filled, the transmission bladder 300 can still maintain its original shape and size, but its strength and shape recovery ability are enhanced, enabling it to withstand greater torque.

[0041] In the case where there is a sealing layer 303 and the flowable medium 12 is filled, if some extreme situations occur, such as the output of the translation controller 9 being too large, causing the transmission bladder 300 to be overly compressed, or the overload protection fails, resulting in the transmission bladder 300 being overly twisted. In the above situations, the pressure of the flowable medium 12 in the sealable cavity will rise sharply, and at this time, it is very likely to cause the rupture and failure of the transmission bladder 300 and the damage of the clutch device. Therefore, a safety valve 305 is installed on the filling and discharging device 304. That is, when an extreme situation occurs and the pressure of the flowable medium 12 rises to the predetermined opening pressure of the safety valve 305, the safety valve 305 will open automatically to release the flowable medium 12, thereby protecting the transmission bladder 300 and preventing irreversible damage. The overflowing flowable medium is filled into the storage 306 to prevent contamination of other components, especially when the flowable medium 12 is a liquid.

[0042] When a planned working condition change occurs and it is necessary to adjust the strength and elasticity of the transmission bladder 300, it is also possible to increase or decrease a certain amount of the flowable medium 12 through the filling and discharging device 304, or even replace it with other types of flowable media 12 to achieve the purpose. This property of being able to easily change the characteristics of the key transmission components without replacing parts greatly improves the adaptability of this clutch device.

[0043] The transmission gear set 4 is composed of at least a pair of gear sets with a transmission ratio not equal to one. According to the characteristics of the transmission bladder 300 and the working condition requirements, it can be installed at one end of the bladder shaft 6, or at one end of the cylinder shaft 1, or installed at both ends simultaneously, to adjust the rotational speed and torque transmitted to the cylinder shaft 1 and the bladder shaft 6, and further adjust the torque and rotational speed borne by the transmission bladder 300. This is especially important when the material or process is limited, making the manufactured transmission bladder 300 only have an advantage in terms of torque or rotational speed. When the transmission bladder 300 exceeds its service life or is overly worn, the transmission bladder 300 can be replaced.

[0044] It can be seen that this clutch device has multiple solutions for adjusting the limit torque. For example, by adjusting the strength and elasticity of the transmission bladder 300, when the torque exceeds the rated value, the bladder teeth 301 deflect and dent relative to the reinforcement layer 302, thus disengaging from the transmission cylinder 200 and slipping, playing a role in overload protection. Also, when the strength and elasticity of the transmission bladder 300 are determined, by adjusting the pressing degree of the transmission bladder 300 to control its deformation amount, the contact and meshing degree between the transmission bladder 300 and the transmission cylinder 200 can be controlled, and thus the maximum torque that can be transmitted between the two can be controlled. At the same time, without replacing parts, the limit torque and the sensitivity of the transmission can be adjusted by changing the injection amount and type of the flowable medium 12.

[0045] Since the transmission component of this clutch device, namely the transmission bladder 300, is flexible, and the flexibility is manifested in any direction and at any time, it has an excellent effect of absorbing and alleviating various impacts during the transmission instant and the transmission process. For example, even if the contact and meshing speed between the transmission bladder 300 and the transmission cylinder 200 is too fast at the transmission instant, the transmission bladder 300 can better absorb the impact. And during the transmission process, the speed and torque fluctuations at the power input or output end can also be well absorbed and eliminated. At the same time, due to the flexible nature of the transmission bladder 300, it has a certain self - adaptability. Firstly, it shows self - adaptability to the shape error between the transmission bladder 300 itself and the transmission cylinder 200, that is to say, even if there is a certain shape error between the two, it will not affect their contact and meshing. Secondly, it is adaptable to the installation error between the transmission bladder 300 and the transmission cylinder 200, as well as between the bladder shaft 6 and the cylinder shaft 1. Even if there are situations such as a certain degree of non - coaxiality or inclination angle among the four, it will not affect its normal operation, which greatly reduces the manufacturing difficulty of this clutch device. At the same time, since it is the transmission bladder 300 that directly participates in the transmission by virtue of its own deformation, and the transmission bladder 300 does not require an external device to continuously provide the flowable medium, and can complete deformation, recovery, and shape maintenance only by relying on its own elasticity and strength, this clutch device also has the advantages of simple structure, high transmission efficiency, and wide application range. In summary, this clutch device is a new type of bladder clutch device with anti - impact, high efficiency, adjustable torque, low precision requirements, simple structure, and wide application range.

[0046] The above - mentioned is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above - mentioned embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A novel bladder clutch device, characterized in that, It includes a transmission cylinder (200), a transmission bladder (300), and a cylinder shaft (1) and a bladder shaft (6) respectively connected to the transmission cylinder (200) and the transmission bladder (300); The transmission bladder (300) includes a reinforcement layer (302), and the reinforcement layer (302) has a certain elasticity and strength to support and stabilize the shape of the transmission bladder (300), so that the transmission bladder (300) also has a certain elasticity and strength; The transmission bladder (300) has an initial shape that deforms in a predetermined direction when squeezed; The transmission bladder (300) can move relatively closer to the transmission cylinder (200), and during the relative approach, the transmission bladder (300) is gradually squeezed, so that the transmission bladder (300) undergoes a predetermined deformation and the contact area with the transmission cylinder (200) gradually increases until they are locked and transmitted to each other, while the transmission bladder (300) and the transmission cylinder (200) do not transmit when not squeezed.

2. The novel bladder clutch device according to claim 1, wherein: The surface of the transmission bladder (300) is distributed with bladder teeth (301), and the surface of the transmission cylinder (200) in pre-contact with the bladder teeth (301) is distributed with protrusions (201) and grooves (202) adapted to the shape and size of the bladder teeth (301).

3. The novel bladder clutch device according to claim 2, characterized in that: Either one or both of the edges of the bladder teeth (301) and the protrusions (201) have guiding structures.

4. A novel bladder clutch device according to claim 1, wherein: The transmission bladder (300) further includes a sealing layer (303), and the sealing layer (303) functions as a seal and forms a sealable cavity; the sealing layer (303) and the reinforcement layer (302) are separate multi-layers or are integrated into one layer.

5. A novel bladder clutch device according to claim 4, wherein: The transmission bladder (300) is equipped with a charging and discharging device (304), and the charging and discharging device (304) communicates with the sealable cavity formed by the sealing layer (303); a flowable medium (12) is injected into the transmission bladder (300) to further adjust the elasticity and strength of the transmission bladder (300).

6. The novel bladder clutch device according to claim 5, wherein: A safety valve (305) and a reservoir (306) are installed on the charging and discharging device (304).

7. A novel bladder clutch device according to claim 1, characterized in that: The transmission cylinder (200) further includes a turntable (203), and the turntable (203) is installed at the initial contact part of the transmission bladder (300) and the transmission cylinder (200), and the turntable (203) can rotate relative to the transmission cylinder (200).

8. A novel bladder clutch device according to claim 1, characterized in that: One or both of the cylinder shaft (1) and the bladder shaft (6) are connected to a transmission gear set (4) with a transmission ratio not equal to one corresponding to each of them to adjust the rotational speed and torque transmitted to the cylinder shaft (1) and the bladder shaft (6).

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