A two-way micro-cylinder convenient to assemble

Abstract

The application discloses a two-way micro cylinder convenient to assemble, relates to the field of micro cylinders, and comprises a cylinder body, a sliding cavity is arranged on the inner side of the cylinder body, a piston is arranged in the sliding cavity in a sliding mode, the upper end of the piston is provided with a sliding rod, a first sealing ring is arranged on the outer side of the piston, the upper end of the sliding cavity is provided with a plug, the sliding rod passes through the middle position of the plug, a second sealing ring is arranged on the outer side of the plug, a third sealing ring is arranged on the inner side of the plug, a first air hole and a second air hole, which are in communication with the sliding cavity, are formed in the side end of the cylinder body, the first air hole is in communication with the space above the piston, and the second air hole is in communication with the space below the piston. The device has a one-way opening sliding cavity, the installation can be completed by sequentially placing components, the device can be quickly and conveniently assembled, has two air inlet ports for two-way air supply effect, and can realize more detailed and stable telescopic control.

Description

Technical Field

[0001] This application relates to the field of miniature cylinders, and in particular to a bidirectional miniature cylinder that is easy to assemble. Background Technology

[0002] Miniature cylinders are small pneumatic components designed for confined spaces, using compressed air to drive a piston for linear motion. They are compact, lightweight, and highly sealed, offering high repeatability and low friction, overcoming the limitations of traditional cylinders such as large size, high energy consumption, and short lifespan. Through modular design, reinforced structures, and the use of wear-resistant materials, miniature cylinders are widely used in high-precision automation fields such as electronics manufacturing and medical equipment, becoming a key technological solution for precision control and energy saving.

[0003] For example, a resin miniature cylinder with patent number CN214533794U has the following shortcomings in actual use:

[0004] The aforementioned device includes a cylinder and a piston and piston rod disposed inside the cylinder. The piston rod passes through one end of the cylinder, and the piston is fixedly connected to the piston rod. The piston can slide along the inner wall of the cylinder. The structure is compact and the fitting precision is high. However, the structure of the aforementioned device is relatively complex and is a sealed structure, which makes it inconvenient to assemble and replace internal parts. Utility Model Content

[0005] To address the technical problem of existing miniature cylinders being inconvenient to assemble and replace internal parts, this application provides a bidirectional miniature cylinder that is easy to assemble.

[0006] The bidirectional miniature cylinder provided in this application adopts the following technical solution:

[0007] A bidirectional miniature cylinder that is easy to assemble includes a cylinder body. A sliding cavity is provided inside the cylinder body, and a piston is slidably disposed in the sliding cavity. A sliding rod is provided at the upper end of the piston, and a first sealing ring is provided on the outer side of the piston. A plug is provided at the upper end of the sliding cavity, and the sliding rod passes through the middle position of the plug. A second sealing ring is provided on the outer side of the plug, and a third sealing ring is provided on the inner side of the plug. A first air hole and a second air hole are provided at the side end of the cylinder body, which communicate with the sliding cavity. The first air hole communicates with the space above the piston, and the second air hole communicates with the space below the piston.

[0008] By adopting the above technical solution, during assembly, each component can be installed sequentially from one end of the slide cavity. The structure is simple and easy to install. Moreover, the upper and lower ends of the piston are connected to the first and second air holes respectively, achieving a bidirectional air supply effect, which can realize more precise and stable extension and retraction control.

[0009] Preferably, a placement platform is provided on the upper side of the sliding cavity, and the edge of the plug rests on the placement platform. A slot is provided on the upper part of the inner wall of the sliding cavity, and an open clamp is provided in the slot, with the lower part of the open clamp abutting against the plug.

[0010] By adopting the above technical solution, during installation, the plug can be directly placed into the sliding cavity, and then the plug can be fixed by using a tool to clamp the opening clamp into the groove, further reducing the installation difficulty.

[0011] Preferably, an internal threaded hole is provided at the center of the upper end of the slide rod.

[0012] By adopting the above technical solution, when using a miniature cylinder, the moving parts can be connected through the internal threaded hole, and the internal threaded hole will not affect the smoothness of the outer side of the slide rod, which facilitates sealing.

[0013] Preferably, an inner rubber ring and an outer rubber ring are provided below the third sealing ring, with the bottom of the outer rubber ring inclined outward and the bottom of the inner rubber ring inclined inward.

[0014] By adopting the above technical solution, after installation, the inner rubber ring is squeezed inward and fits against the slide rod, while the outer rubber ring is tilted outward and fits against the inner wall of the plug. When gas is introduced into the second air hole, the air pressure at the top of the piston will squeeze the inner and outer rubber rings to both sides, further improving the sealing effect.

[0015] Preferably, the piston stroke is 2 mm.

[0016] By adopting the above technical solution, the piston's position remains between the first and second air holes throughout the entire process of its up-and-down movement.

[0017] Preferably, the second vent includes a first vent, a second vent, and a third vent that are interconnected. The first vent is connected to the interior of the sliding cavity, the second vent is distributed along a direction away from the first vent, and the third vent is parallel to the first vent.

[0018] By adopting the above technical solution, the distance between the third air hole and the first air hole is increased by the second air hole, providing more installation space for the connection of the air circuit and making it more convenient to use.

[0019] Preferably, a bent pipe is threaded onto the second air hole, and a straight pipe is connected to the first air hole.

[0020] By adopting the above technical solution, the distance between the connection positions of the second air hole and the first air hole can be increased by the bend and the straight pipe, providing more installation space for the connection of the air circuit and making it more convenient to use. Moreover, when connecting, the bend is installed first and then the straight pipe is installed, which can avoid structural collision.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. When installing a miniature cylinder, the components can be placed into the sliding cavity in sequence through the open sliding cavity. The structure is simple and easy to install. Moreover, the upper and lower ends of the piston are connected to the first and second air holes respectively, realizing a bidirectional air supply effect, which can achieve more precise and stable extension and retraction control. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall isometric structure of this application;

[0024] Figure 2 This is a schematic diagram of the split structure of this application;

[0025] Figure 3 This is a cross-sectional view of Embodiment 1 in this application;

[0026] Figure 4 This is a cross-sectional view of the third sealing ring in this application;

[0027] Figure 5 This is a cross-sectional view of Embodiment 2 in this application;

[0028] Figure 6 This is a cross-sectional structural diagram of Embodiment 3 in this application.

[0029] Reference numerals: 1. Cylinder body; 2. Slide cavity; 3. Piston; 4. First sealing ring; 5. Slide rod; 6. Plug; 7. Second sealing ring; 8. Third sealing ring; 9. First vent; 10. Second vent; 11. Placement platform; 12. Slot; 13. Open clamp; 14. Internal threaded hole; 15. Outer rubber ring; 16. Inner rubber ring; 17. First vent; 18. Second vent; 19. Third vent; 20. Straight pipe; 21. Bend. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0031] This application discloses a bidirectional miniature cylinder that is easy to assemble.

[0032] Example 1:

[0033] Reference Figures 1-3A bidirectional miniature cylinder for easy assembly includes a cylinder body 1 with an internal sliding cavity 2. A piston 3 is slidably mounted in the sliding cavity 2, with a stroke of 2 mm. A sliding rod 5 is connected to the upper end of the piston 3, and a first sealing ring 4 is nested on the outside of the piston 3 to ensure sealing. A plug 6 is provided at the top of the sliding cavity 2, and the edge of the plug 6 overlaps with the placement platform 11 on the upper part of the sliding cavity 2 for initial positioning. At the same time, a slot 12 is opened on the upper part of the inner wall of the sliding cavity 2, with an open clamp 13 inside, the lower end of which is tightly abutted against the plug 6 to complete the fixation. The sliding rod 5 passes through the center of the plug 6, and a second sealing ring 7 and a third sealing ring 8 are respectively arranged on the outer and inner sides of the plug 6 to enhance the sealing effect. In addition, a first air hole 9 and a second air hole 10 communicating with the sliding cavity 2 are opened on the side wall of the cylinder body 1, wherein the first air hole 9 communicates with the space above the piston 3, and the second air hole 10 communicates with the space below the piston 3, thereby realizing bidirectional pneumatic control.

[0034] With the above setup, during assembly, the piston 3, plug 6, and open clamp 13 can be inserted into one end of the slide cavity 2 in sequence. The structure is simple and easy to install. Moreover, the upper and lower ends of the piston 3 are connected to the first air hole 9 and the second air hole 10 respectively. During the entire process of the piston 3 moving up and down, its position is always between the first air hole 9 and the second air hole 10, achieving a bidirectional air supply effect and enabling more precise and stable telescopic control.

[0035] Reference Figure 3 The upper center of the slide rod 5 is provided with an internal threaded hole 14 for connecting components.

[0036] With the above settings, when using a miniature cylinder, the moving parts can be connected through the internal threaded hole 14, and the internal threaded hole 14 will not affect the smoothness of the outer side of the slide rod 5, which is convenient for sealing. There is no need to lengthen the slide rod 5, and the structure is more compact.

[0037] Reference Figure 4 Below the third sealing ring 8, there is an inner rubber ring 16 that is inclined inward and an outer rubber ring 15 that is inclined outward.

[0038] With the above settings, the inner rubber ring 16 is pressed inward and fits against the slide rod 5, while the outer rubber ring 15 is tilted outward and fits against the inner wall of the plug 6. When gas is introduced into the second air hole 10, the air pressure at the top of the piston 3 will press the inner rubber ring 16 against the slide rod 5 and the outer rubber ring 15 against the plug 6, further improving the sealing effect.

[0039] The implementation principle of this embodiment is as follows:

[0040] When assembling the miniature cylinder, the piston 3, plug 6, and open clamp 13 are inserted sequentially from one end of the slide cavity 2. The structure is simple and easy to install. When using the miniature cylinder, the moving parts can be connected through the internal threaded hole 14. During the entire process of the piston 3 moving up and down, its position is always between the first air hole 9 and the second air hole 10, achieving a bidirectional air supply effect. This allows for more precise and stable telescopic control. Moreover, the air pressure at the upper end of the piston 3 will press the inner rubber ring 16 against the slide rod 5 and the outer rubber ring 15 against the plug 6, further improving the sealing effect.

[0041] Example 2:

[0042] Reference Figure 5 The difference between this embodiment and the first embodiment is that the second air hole 10 is composed of a first air hole 17, a second air hole 18 and a third air hole 19 that are interconnected. The first air hole 17 is connected to the inside of the sliding cavity 2 to achieve the air supply effect. The second air hole 18 is distributed in a direction away from the first air hole 9, so that the third air hole 19 is away from the first air hole 9 and is parallel to the first air hole 9.

[0043] By using the above settings, the distance between the third air hole 19 and the first air hole 9 is increased by the second air hole 18, providing more installation space for the connection of the air circuit and making it more convenient to use.

[0044] The implementation principle of this embodiment is as follows:

[0045] The second vent 10 is designed as a segmented curved vent, which, while connecting the upper space of the piston 3, provides more installation space for the connection of the air passage and makes it more convenient to use.

[0046] Example 3:

[0047] Reference Figure 6 The difference between this embodiment and embodiment one is that: a bent pipe 21 is threaded onto the second air hole 10, a straight pipe 20 is connected to the first air hole 9, and the bending direction of the bent pipe 21 is away from the straight pipe 20.

[0048] With the above setup, the bend 21 is installed first, followed by the straight pipe 20, increasing the distance between the connection points of the second air hole 10 and the first air hole 9, providing more installation space for the air circuit connection and making it more convenient to use.

[0049] The implementation principle of this embodiment is as follows:

[0050] When connecting the air circuit, the first air hole 9 and the second air hole 10 are connected through two intermediate parts, the straight pipe 20 and the bent pipe 21, respectively. Due to the bending effect of the bent pipe 21, the distance between the two joints of the air circuit is greater, providing more installation space for the connection of the air circuit and making it more convenient to use.

[0051] In summary, this device can be assembled quickly and easily, and it has two air inlet ports for bidirectional air supply, enabling more precise and stable telescopic control.

[0052] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bidirectional miniature cylinder that is easy to assemble, comprising a cylinder body (1), characterized in that: The cylinder body (1) has a sliding cavity (2) inside, a piston (3) is slidably arranged in the sliding cavity (2), and a sliding rod (5) is arranged at the upper end of the piston (3). A first sealing ring (4) is arranged on the outer side of the piston (3). A plug (6) is arranged at the upper end of the sliding cavity (2), and the sliding rod (5) passes through the middle position of the plug (6). A second sealing ring (7) is arranged on the outer side of the plug (6), and a third sealing ring (8) is arranged on the inner side of the plug (6). A first air hole (9) and a second air hole (10) communicating with the sliding cavity (2) are opened at the side end of the cylinder body (1). The first air hole (9) is connected to the upper space of the piston (3), and the second air hole (10) is connected to the lower space of the piston (3).

2. The easily assembled bidirectional miniature cylinder according to claim 1, characterized in that: A placement platform (11) is provided on the upper side of the sliding cavity (2), and the edge of the plug (6) rests on the placement platform (11). A slot (12) is provided on the upper part of the inner wall of the sliding cavity (2), and an open clamp (13) is provided in the slot (12). The lower part of the open clamp (13) abuts against the plug (6).

3. The easily assembled bidirectional miniature cylinder according to claim 1, characterized in that: The upper center of the slide rod (5) is provided with an internal thread hole (14).

4. The easily assembled bidirectional miniature cylinder according to claim 1, characterized in that: The third sealing ring (8) is provided with an inner rubber ring (16) and an outer rubber ring (15) below it, and the bottom of the outer rubber ring (15) is inclined to the outside, while the bottom of the inner rubber ring (16) is inclined to the inside.

5. A bidirectional miniature cylinder that is easy to assemble according to claim 1, characterized in that: The piston (3) has a stroke of 2 mm.

6. The easily assembled bidirectional miniature cylinder according to claim 1, characterized in that: The second vent (10) includes a first vent (17), a second vent (18) and a third vent (19) that are interconnected. The first vent (17) is connected to the interior of the sliding cavity (2), the second vent (18) is distributed along a direction away from the first vent (9), and the third vent (19) is parallel to the first vent (9).

7. A bidirectional miniature cylinder that is easy to assemble according to claim 1, characterized in that: A bent pipe (21) is threaded onto the second air hole (10), and a straight pipe (20) is connected to the first air hole (9).

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