Pneumatic roller type locking mechanism and device

Abstract

The utility model provides a pneumatic roller type locking mechanism and device. The pneumatic roller type locking mechanism comprises a shell, a positioning column and a locking assembly. A through hole is formed in the shell in the first direction. A first inner cavity is defined by the positioning column and the through hole, and the surface of the positioning column is sunken inwards to form a positioning groove; the locking assembly comprises a pin roller and a locking retaining piece, the locking retaining piece is arranged in the first inner cavity, attached to the shell and slidably connected with the positioning column, the locking retaining piece and the positioning column define a second inner cavity, and the pin roller is arranged in the second inner cavity; the locking retaining piece moves in the first direction to push the pin roller to be partially attached to the positioning groove so as to lock the positioning column. According to the pneumatic roller type locking mechanism, the roller is used, so that the stress surface is changed into a line from a point, and the locking force is greatly increased. The locking retainer moves along the first direction to push the pin roller to be partially attached to the positioning groove, so that the positioning column is firmly locked, the detected piece is ensured to be stable and immovable in the detection process, and the detection reliability and accuracy are improved.

Description

Technical Field

[0001] The present application relates to the technical field of locking devices, and in particular to a pneumatic roller locking mechanism. Background Art

[0002] Traditional airtightness testing devices usually need to apply a lot of pressure to achieve effective locking when testing the test piece. In order to ensure that the test piece does not move or leak during the test, the locking structure must provide sufficient pressure. However, the application of such a large pressure not only requires the device itself to have a large volume and high mechanical strength, but also requires the use of a high-power drive device, which increases the size and load of the device to a certain extent, which is not conducive to the lightweight and miniaturization of the device.

[0003] At present, many airtightness detection devices use motors and locking mechanisms to provide the required locking pressure, thereby reducing the size and load of the equipment. However, traditional locking mechanisms mostly use ball structures, and achieve locking through point contact between the ball and the positioning groove. However, this point contact method leads to poor locking effect and may cause insufficient locking force, resulting in leakage of the tested part during the detection process, affecting the accuracy of the test results. Utility Model Content

[0004] In view of this, it is necessary to provide a pneumatic roller locking mechanism that can provide greater locking force to solve the above problems.

[0005] An embodiment of the present application provides a pneumatic roller locking mechanism, comprising:

[0006] The housing is provided with a through hole along a first direction;

[0007] A positioning column, which is enclosed with the through hole to form a first inner cavity, and the surface of the positioning column is inwardly recessed to form a positioning groove;

[0008] A locking assembly, comprising a roller and a locking retainer, wherein the locking retainer is disposed in the first inner cavity and fits the housing and is slidably connected to the positioning column, the locking retainer and the positioning column enclose a second inner cavity, and the roller is disposed in the second inner cavity;

[0009] The locking retaining member moves along the first direction to push the roller part to fit the positioning groove to lock the positioning column.

[0010] In at least one embodiment of the present application, when viewed along a second direction perpendicular to the first direction, two end surfaces of the locking retainer in the first direction are enclosed with the housing to form a first air cavity and a second air cavity;

[0011] An air inlet and an air outlet are provided on the shell, the air inlet is connected to the first air cavity, and the air outlet is connected to the second air cavity;

[0012] When the first air cavity is inflated, the locking retainer pushes the roller to lock the positioning column.

[0013] In at least one embodiment of the present application, the locking retainer includes a sliding portion, a limiting portion, and a pushing portion, and one side of the sliding portion is in contact with the housing;

[0014] The sliding portion extends outward from a side of the housing to form the limiting portion, the limiting portion is in contact with the positioning column, and the housing, the sliding portion and the limiting portion are enclosed to form the second inner cavity;

[0015] The pushing portion is disposed on the sliding portion and is located in the second inner cavity, and one end of the pushing portion is inclined along the first direction;

[0016] When the first air cavity is inflated, the sliding portion slides along the first direction, the pushing portion abuts against and pushes the locking member to lock the positioning column, and the limiting portion abuts against the shell on one side and the roller on the other side to limit the movement of the roller in the first direction.

[0017] In at least one embodiment of the present application, the sliding portion, the limiting portion and the pushing portion are integrally formed.

[0018] In at least one embodiment of the present application, the locking assembly includes a plurality of the rollers, and the plurality of the rollers are annularly arranged in the second inner cavity.

[0019] In at least one embodiment of the present application, the maximum depth of the positioning groove is defined as a, the diameter of the roller is defined as b, and a=2 / 3b.

[0020] In at least one embodiment of the present application, the shell includes a limit block and a first part arranged along the first direction and a second part threadedly connected to the first part, the limit block is arranged in the second part and located in the second inner cavity, and the limit block abuts the roller to limit the horizontal movement of the roller.

[0021] In at least one embodiment of the present application, two adjacent limit blocks are attached to two ends of each roller.

[0022] In at least one embodiment of the present application, the locking mechanism also includes a plurality of sealing rings, and a plurality of annular sealing grooves are provided at both ends of the locking assembly close to the first air cavity and the second air cavity, and each of the sealing rings partially extends into each of the sealing grooves, with one end facing away from the locking assembly abutting against the shell.

[0023] A pneumatic roller locking device comprises the pneumatic roller locking mechanism as described above.

[0024] The pneumatic roller locking mechanism provided above uses rollers to change the force-bearing surface from a point to a line, greatly increasing the locking force. The locking retainer moves along the first direction, pushing the roller part to fit the positioning groove, thereby firmly locking the positioning column, ensuring that the tested part is stable and motionless during the detection process, reducing the dependence on high-power drive devices in traditional airtight detection, and improving the reliability and accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional exploded view of a pneumatic roller locking mechanism in one embodiment of the present application.

[0026] Figure 2 for Figure 1 A schematic diagram of an unlocked state of a pneumatic roller locking mechanism.

[0027] Figure 3 for Figure 1 A schematic diagram of the locking state of the pneumatic roller locking mechanism.

[0028] Figure 4 for Figure 1 A side sectional view of the pneumatic roller locking mechanism.

[0029] Figure 5 for Figure 1 A top cross-sectional view of the pneumatic roller locking mechanism.

[0030] Figure 6 for Figure 1 A cross-sectional view of a locking retainer of a pneumatic roller locking mechanism.

[0031] Main component symbols

[0032] 100. A pneumatic roller locking mechanism; 10. Shell; 11. Through hole; 12. Air inlet; 13. Air outlet; 14. First air cavity; 15. Second air cavity; 16. First part; 17. Second part; 171. Limit block; 20. Positioning column; 21. First inner cavity; 22. Positioning groove; 30. Locking assembly; 31. Roller; 32. Locking retainer; 321. Sliding part; 322. Limiting part; 323. Pushing part; 33. Second inner cavity; 34. Sealing groove; 40. Sealing ring. DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0034] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0035] An embodiment of the present application provides a pneumatic roller locking mechanism, comprising:

[0036] The housing is provided with a through hole along a first direction;

[0037] A positioning column, which is enclosed with the through hole to form a first inner cavity, and the surface of the positioning column is inwardly recessed to form a positioning groove;

[0038] A locking assembly, comprising a roller and a locking retainer, wherein the locking retainer is disposed in the first inner cavity and fits the housing and is slidably connected to the positioning column, the locking retainer and the positioning column enclose a second inner cavity, and the roller is disposed in the second inner cavity;

[0039] The locking retaining member moves along the first direction to push the roller part to fit the positioning groove to lock the positioning column.

[0040] The pneumatic roller locking mechanism provided above uses rollers to change the force-bearing surface from a point to a line, greatly increasing the locking force. The locking retainer moves along the first direction, pushing the roller part to fit the positioning groove, thereby firmly locking the positioning column, ensuring that the tested part is stable and motionless during the detection process, reducing the dependence on high-power drive devices in traditional airtight detection, and improving the reliability and accuracy of the detection.

[0041] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0042] See also Figure 1-Figure 6 , an embodiment of the present application provides a pneumatic roller locking mechanism 100, comprising a housing 10, a positioning column 20 and a locking assembly 30;

[0043] The shell 10 is provided with a through hole 11 along a first direction; the positioning column 20 and the through hole 11 are combined to form a first inner cavity 21, and the surface of the positioning column 20 is recessed inward to form a positioning groove 22; the locking assembly 30 includes a roller 31 and a locking retainer 32, the locking retainer 32 is arranged in the first inner cavity 21 and fits the shell 10, and is slidably connected to the positioning column 20, the locking retainer 32 and the positioning column 20 are combined to form a second inner cavity 33, and the roller 31 is arranged in the second inner cavity 33; the locking retainer 32 moves along the first direction to push the roller 31 to partially fit the positioning groove 22 to lock the positioning column 20.

[0044] Specifically, the housing 10 serves as the outer shell of the entire pneumatic roller 31 locking mechanism, and provides a position for component installation and fixing by opening a through hole 11 along the first direction. The provision of the through hole 11 enables the positioning column 20 and the locking retainer 32 to be correctly installed inside the housing 10, thereby ensuring the stability and reliability of the entire structure. The main function of the positioning column 20 is to provide a basic structure and positioning function for locking. It is enclosed with the through hole 11 in the housing 10 to form a first inner cavity 21, and the positioning groove 22 formed by the inward depression on the surface of the positioning column 20 is used to receive the locking part of the roller 31. The design of the positioning groove 22 ensures the precise positioning of the roller 31 during the locking process, thereby enhancing the stability and reliability of the locking.

[0045] Furthermore, the locking assembly 30 is a core component for realizing the locking function. The locking retainer 32 is installed in the first inner cavity 21, fits the shell 10, and is slidably connected with the positioning column 20. The locking retainer 32 and the positioning column 20 enclose a second inner cavity 33, and the roller 31 is placed in the second inner cavity 33. This design allows the locking retainer 32 to move along the first direction, pushing the roller 31 to fit the positioning groove 22, thereby firmly locking the positioning column 20. The moving locking retainer 32 pushes the roller 31 to approach the positioning column 20, and the roller 31 fits the positioning groove 22. By controlling the movement of the locking retainer 32, the locking force and time can be accurately controlled to ensure the stability and reliability of the locking.

[0046] Furthermore, the roller 31 is one of the core components of the locking assembly 30, and its design allows it to partially fit the positioning groove 22 on the positioning column 20. This precise positioning ensures the correct position of the roller 31 during the locking process, preventing the positioning column 20 from moving or loosening unnecessarily during use. Compared with the traditional ball locking mechanism, the design of the roller 31 makes the locking surface a line instead of a point. This linear contact surface can share a larger locking force, thereby greatly increasing the stability and reliability of the locking. Therefore, even under high pressure or vibration environment, the roller 31 can effectively maintain the locked state, avoiding equipment operation problems or leakage caused by loose locking.

[0047] In a specific embodiment, when viewed along a second direction perpendicular to the first direction, two end surfaces of the locking retainer 32 in the first direction are enclosed with the housing 10 to form a first air cavity 14 and a second air cavity 15;

[0048] The housing 10 is provided with an air inlet 12 and an air outlet 13 , wherein the air inlet 12 is connected to the first air cavity 14 , and the air outlet 13 is connected to the second air cavity 15 ;

[0049] When the first air cavity 14 is inflated, the locking retainer 32 pushes the roller 31 to lock the positioning column 20 .

[0050] Specifically, this feature describes the positional relationship of the locking retainer 32 in the first direction. At both ends of the locking retainer 32, two air cavities are formed together with the housing 10, namely, the first air cavity 14 and the second air cavity 15. The design of the air cavity enables the system to achieve precise movement of the locking retainer 32 through pneumatic control. The arrangement of the two air cavities in the first direction enables the locking retainer 32 to be pushed by air pressure in the first direction, thereby driving the roller 31 to lock. This arrangement improves the control accuracy and response speed of the locking mechanism.

[0051] Furthermore, the air inlet 12 and the air outlet 13 are respectively connected to the first air cavity 14 and the second air cavity 15, so that gas can enter or exit the air cavity. By controlling the inlet and outlet of gas, the position of the locking retainer 32 can be adjusted. This design allows the pneumatic system to flexibly control the movement of the locking retainer 32. The air inlet 12 supplies air to the first air cavity 14, so that the locking retainer 32 moves in one direction, while the air outlet 13 exhausts air to the second air cavity 15, ensuring the balance of air pressure and the smooth movement of the locking retainer 32. In this way, high-precision control of the locking process can be achieved.

[0052] Furthermore, when the gas enters the first air cavity 14, the air pressure pushes the locking retainer 32 to move in the first direction. The moving locking retainer 32 pushes the roller 31 so that it partially fits the positioning groove 22, thereby locking the positioning column 20. The use of the pneumatic system makes the locking process more automated and precise. The control of the air pressure can achieve precise adjustment of the locking state, ensuring that the roller 31 can firmly lock the positioning column 20. Compared with the mechanical locking mechanism, the pneumatic system has a fast response, high control accuracy, and is easy to automate.

[0053] In a specific embodiment, the locking retainer 32 includes a sliding portion 321, a limiting portion 322 and a pushing portion 323, and one side of the sliding portion 321 is in contact with the housing 10;

[0054] The sliding portion 321 extends outward from one side of the housing 10 to form the limiting portion 322 , and the limiting portion 322 fits the positioning column 20 . The housing 10 , the sliding portion 321 and the limiting portion 322 enclose the second inner cavity 33 .

[0055] The pushing portion 323 is disposed on the sliding portion 321 and is located in the second inner cavity 33 , and one end of the pushing portion 323 is inclined along the first direction;

[0056] When the first air cavity 14 is inflated, the sliding portion 321 slides along the first direction, the pushing portion 323 adheres to and pushes the locking member to lock the positioning column 20, and the limiting portion 322 abuts against the shell 10 on one side and the roller 31 on the other side to limit the movement of the roller 31 in the first direction.

[0057] Specifically, the sliding portion 321 is the core part of the locking retainer 32, and its design enables it to slide smoothly in the housing 10. One side of the sliding portion 321 fits the housing 10 to ensure that the sliding portion 321 maintains the correct trajectory during movement and avoids deviation. The fitting design of the sliding portion 321 and the housing 10 ensures the smooth sliding of the locking retainer 32 and improves the accuracy and reliability of the locking mechanism. The limiting portion 322 extends outward from the sliding portion 321 and fits with the positioning column 20. The design of the limiting portion 322 ensures that the sliding portion 321 always maintains close contact with the positioning column 20 during movement. The existence of the limiting portion 322 prevents the sliding portion 321 and the roller 31 from excessive movement or misalignment during the locking process, ensuring the accuracy and reliability of the locking action.

[0058] Furthermore, the housing 10, the sliding portion 321 and the limiting portion 322 are enclosed together to form a second inner cavity 33, which provides space for the placement and movement of the roller 31. The design of the second inner cavity 33 provides a limited activity space for the roller 31, so that the roller 31 can stably move and position during the locking process, thereby improving the stability of the locking mechanism. The pushing portion 323 is mounted on the sliding portion 321, located in the second inner cavity 33, and one end thereof is inclined along the first direction. The pushing portion 323 is designed so that it can push the roller 31 when the sliding portion 321 moves. When the sliding portion 321 moves, the inclined pushing portion 323 can gradually push the roller 31 toward the positioning groove 22, thereby achieving a smooth and gradual locking action and avoiding the impact and wear caused by sudden locking.

[0059] Furthermore, when the gas enters the first air cavity 14, the sliding portion 321 slides in the first direction under the action of the air pressure. The pushing portion 323 fits against the roller 31 during the sliding process, pushing it toward the positioning groove 22 to achieve locking. One side of the limiting portion 322 abuts against the shell 10, and the other side abuts against the roller 31, limiting the movement of the roller 31 to ensure that it does not deviate during the locking process. By pneumatically controlling the movement of the sliding portion 321, the pushing portion 323 pushes the roller 31 toward the positioning groove 22 to achieve a smooth and reliable locking action. The design of the limiting portion 322 further enhances the stability of the locking process, prevents unnecessary movement of the roller 31, and improves the accuracy and reliability of the locking.

[0060] In summary, the linear contact design of the roller 31 significantly improves the locking force, providing a more stable and reliable locking effect compared to the traditional ball locking mechanism. The sophisticated design of the pneumatic system and the locking retainer 32 ensures a smooth and accurate locking action, preventing movement or leakage of the test piece during the test. Pneumatic control achieves a fast locking action, which is suitable for application scenarios that require frequent locking and release, and improves work efficiency.

[0061] In a specific embodiment, the sliding portion 321 , the limiting portion 322 and the pushing portion 323 are integrally formed.

[0062] Specifically, the one-piece design improves the connection strength between the sliding portion 321, the limiting portion 322 and the pushing portion 323, and reduces the assembly error and looseness possibility between the parts. It reduces the complexity of manufacturing and assembling multiple parts separately, improves production efficiency, and reduces manufacturing costs. The one-piece molded components ensure the precise matching and coordinated work of each part, further improving the reliability and service life of the locking mechanism.

[0063] In a specific embodiment, the locking assembly 30 includes a plurality of rollers 31 , and the plurality of rollers 31 are annularly disposed in the second inner cavity 33 .

[0064] Specifically, multiple positioning grooves 22 of the positioning columns 20 are provided for locking during the locking process. The locking force and stability are increased, and more uniform force transmission is achieved through the distribution of multiple rollers 31, reducing the wear of a single roller 31 and extending the service life of the locking assembly 30. Multiple rollers 31 are arranged in a ring shape and evenly distributed in the second inner cavity 33 to ensure the uniformity of the locking force in all directions. The ring arrangement makes the locking force evenly distributed around the positioning column 20, avoiding the deviation or instability caused by the unidirectional force, and improving the stability and reliability of the locking effect.

[0065] In a specific embodiment, the maximum depth of the positioning groove 22 is defined as a, the diameter of the roller 31 is defined as b, and a=2 / 3b.

[0066] Specifically, the positioning groove 22 is a groove formed by the surface of the positioning column 20, which is used to accommodate a part of the roller 31, so as to achieve a locking effect. The maximum depth a is set to ensure that the roller 31 can be fully embedded in the positioning groove 22 in the locked state to provide a stable locking force. The diameter of the roller 31 determines its size in the second inner cavity 33, and also affects the contact area between the roller 31 and the positioning groove 22 and the distribution of the locking force.

[0067] Preferably, a=2 / 3b means that the maximum depth of the positioning groove 22 is two-thirds of the diameter of the roller 31. The contact area between the roller 31 and the positioning groove 22 is moderate, which not only ensures sufficient contact force to lock the positioning column 20, but also avoids the problem of difficulty in release caused by excessive penetration. The contact force of the roller 31 in the positioning groove 22 is relatively uniform, and there will be no local excessive force points, thereby reducing the risk of wear and damage. The stability and reliability of the locking and unlocking process are guaranteed, ensuring that the positioning column 20 can be locked and released quickly and effectively when needed.

[0068] In a specific embodiment, the shell 10 includes a limit block 171 and a first part 16 arranged along the first direction and a second part 17 threadedly connected to the first part 16. The limit block 171 is arranged in the second part 17 and is located in the second inner cavity 33. The limit block 171 abuts against the roller 31 to limit the horizontal movement of the roller 31.

[0069] Specifically, the limit block 171 is a part of the housing 10, located in the second portion 17 inside the housing 10, and is disposed in the second inner cavity 33. The main function of the limit block 171 is to provide a fixed and precise limit position in the second inner cavity 33 where the roller 31 is located, so as to limit the movement of the roller 31 in the horizontal direction.

[0070] Furthermore, when the first air chamber 14 of the pneumatic locking mechanism is inflated, the locking retainer 32 and the sliding portion 321 move in the first direction, pushing the roller 31 to partially fit the positioning groove 22, thereby locking the positioning column 20. At the same time, the limit block 171 is located in the second inner cavity 33, ensuring that when the roller 31 is pushed into the positioning groove 22, one side of the limit block 171 abuts against the housing 10 and the other side abuts against the roller 31, limiting the horizontal movement of the roller 31. This limit ensures the stability and locking effect of the roller 31, and avoids unnecessary deviation or looseness.

[0071] In a specific embodiment, two adjacent limiting blocks 171 are attached to two ends of each roller 31 .

[0072] Specifically, each limit block 171 is designed to fit tightly with both ends of the roller 31. This design ensures that when the roller 31 moves in the second inner cavity 33, both ends of each roller 31 are supported and limited by the limit blocks 171, thereby limiting any accidental movement or deviation of the roller 31 in the horizontal direction. When the first air cavity 14 of the pneumatic roller 31 type locking mechanism is inflated, the locking retainer 32 and the sliding portion 321 move along the first direction, pushing the roller 31 to partially fit the positioning groove 22 and lock the positioning column 20. At the same time, each limit block 171 is located in the second inner cavity 33, at both ends of the roller 31. When the roller 31 is pushed into the positioning groove 22 and locked, the limit blocks 171 ensure that both ends of the roller 31 are supported to prevent it from moving or swinging in the horizontal direction.

[0073] Furthermore, the stoppers 171 at both ends of each roller 31 are fitted together to ensure the stability and precise alignment of the roller 31 in the locked state. This is very important for applications that require high-precision positioning and locking, such as precision machining equipment and test and measurement systems. The design of the stoppers 171 effectively prevents uncontrolled horizontal movement of the roller 31 in the locked state, ensuring the stability and reliability of the equipment or workpiece during operation. By reducing the ineffective movement of the roller 31 in the locked state, the service life of the locking mechanism and related components is extended, and the maintenance and replacement costs are reduced.

[0074] In a specific embodiment, the locking mechanism also includes a plurality of sealing rings 40, and a plurality of annular sealing grooves 34 are provided at both ends of the locking assembly 30 close to the first air cavity 14 and the second air cavity 15, and each of the sealing rings 40 partially extends into each of the sealing grooves 34, and the end facing away from the locking assembly 30 abuts against the shell 10.

[0075] Specifically, each sealing ring 40 is designed to partially extend into the sealing groove 34, and is used to provide an effective seal between the moving part and the stationary part of the locking mechanism. This seal prevents gas leakage or medium leakage, and maintains the airtightness inside the locking mechanism. When the first air cavity 14 of the pneumatic roller 31 type locking mechanism is inflated, the locking retainer 32 and the sliding part 321 move along the first direction, pushing the roller 31 to partially fit the positioning groove 22, and locking the positioning column 20. At the same time, since the locking assembly 30 is provided with annular sealing grooves 34 at both ends close to the first air cavity 14 and the second air cavity 15, the sealing ring 40 partially extends into the sealing groove 34, and forms an effective sealing contact with the housing 10. Such a design ensures that during the locking process, gas cannot leak through the seal or the medium cannot leak out, thereby maintaining the stability and reliability of the locking mechanism.

[0076] Furthermore, the design of the sealing ring 40 effectively prevents gas or other media from leaking from the inside of the locking mechanism to the external environment, maintaining the airtightness of the system and the cleanliness of the working environment. The presence of the sealing ring 40 reduces the risk of external contaminants entering the locking mechanism, prolongs the service life of the mechanism components and reduces maintenance requirements. Good sealing ensures the stability and reliability of the locking mechanism during operation, especially in applications that require long-term pressure maintenance or prevention of medium leakage.

[0077] In summary, by adopting the design of roller 31 and positioning groove 22, roller 31 can effectively lock positioning column 20, ensuring the stability and accuracy of position. The proportional relationship between roller 31 and positioning groove 22 ensures good fit in the locked state and enhances the locking force. The locking retainer 32 is pneumatically controlled to move along the first direction to push roller 31 to lock positioning column 20. This design ensures accurate position control during locking and unlocking, which is particularly important for applications requiring high-precision positioning.

[0078] The structural design of the housing 10 includes a limit block 171 and a specific layout of the air inlet 12 and the air outlet 13, which limits the horizontal movement of the roller 31 and improves the overall stability and operational reliability. The setting of the limit block 171 effectively limits the unnecessary movement of the roller 31 and ensures the stability of the mechanism during operation.

[0079] The multi-roller 31 design enhances the stability and force distribution of the lock, and is suitable for various industrial and technological application requirements. The mechanism design takes into account a variety of operating environments and application scenarios, such as hydraulic and pneumatic systems, precision instruments and industrial automation. The application of the sealing ring 40 not only ensures airtightness, making the pneumatic lock more stable, but also prevents air leakage and locking problems, so that the mechanism can operate stably under harsh environmental conditions, and can also prevent the locking assembly 30 inside the housing 10 from being affected by the outside world.

[0080] In general, the design of the pneumatic roller 31-type locking mechanism fully considers the strength of the locking force, the accuracy of position control, and the requirements of operational stability, and is suitable for various industrial and technological application scenarios that require precise and reliable locking.

[0081] A pneumatic roller locking device includes various structures in the pneumatic roller locking mechanism 100 described above. Since this embodiment includes all the features of the above embodiments, the above embodiment has all the beneficial effects of the above embodiments and will not be repeated here.

[0082] The above is only an implementation method of the present application. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present application, but these improvements are within the scope of protection of the present application.

Claims

1. A pneumatic roller locking mechanism, characterized in that: include: The housing is provided with a through hole along a first direction; A positioning column, which is enclosed with the through hole to form a first inner cavity, and the surface of the positioning column is inwardly recessed to form a positioning groove; A locking assembly, comprising a roller and a locking retainer, wherein the locking retainer is disposed in the first inner cavity and fits the housing and is slidably connected to the positioning column, the locking retainer and the positioning column enclose a second inner cavity, and the roller is disposed in the second inner cavity; The locking retaining member moves along the first direction to push the roller part to fit the positioning groove to lock the positioning column.

2. A pneumatic roller locking mechanism according to claim 1, characterized in that: When viewed along a second direction perpendicular to the first direction, two end surfaces of the locking retainer in the first direction are enclosed with the housing to form a first air cavity and a second air cavity; An air inlet and an air outlet are provided on the shell, the air inlet is connected to the first air cavity, and the air outlet is connected to the second air cavity; When the first air cavity is inflated, the locking retainer pushes the roller to lock the positioning column.

3. A pneumatic roller locking mechanism according to claim 2, characterized in that: The locking retainer comprises a sliding portion, a limiting portion and a pushing portion, and one side of the sliding portion is in contact with the housing; The sliding portion extends outward from a side of the housing to form the limiting portion, the limiting portion is in contact with the positioning column, and the housing, the sliding portion and the limiting portion are enclosed to form the second inner cavity; The pushing portion is disposed on the sliding portion and is located in the second inner cavity, and one end of the pushing portion is inclined along the first direction; When the first air cavity is inflated, the sliding portion slides along the first direction, the pushing portion abuts against and pushes the locking member to lock the positioning column, and the limiting portion abuts against the shell on one side and the roller on the other side to limit the movement of the roller in the first direction.

4. A pneumatic roller locking mechanism according to claim 3, characterized in that: The sliding portion, the limiting portion and the pushing portion are integrally formed.

5. The pneumatic roller locking mechanism according to claim 1, characterized in that: The locking assembly includes a plurality of rollers, and the plurality of rollers are annularly arranged in the second inner cavity.

6. A pneumatic roller locking mechanism according to claim 1, characterized in that: The maximum depth of the positioning groove is defined as a, and the diameter of the roller is defined as b, where a=2 / 3b.

7. The pneumatic roller locking mechanism according to claim 1, characterized in that: The shell includes a limit block, a first part arranged along the first direction, and a second part threadedly connected to the first part. The limit block is arranged in the second part and located in the second inner cavity. The limit block abuts against the roller to limit the horizontal movement of the roller.

8. The pneumatic roller locking mechanism according to claim 7, characterized in that: Two adjacent limit blocks are attached to two ends of each roller.

9. The pneumatic roller locking mechanism according to claim 2, characterized in that: The locking mechanism also includes a plurality of sealing rings. The locking assembly is provided with a plurality of annular sealing grooves at both ends close to the first air cavity and the second air cavity. Each sealing ring partially extends into each sealing groove, and one end away from the locking assembly abuts against the shell.

10. A pneumatic roller locking device, characterized in that: A pneumatic roller locking mechanism comprising any one of claims 1 to 9.

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