Novel air cylinder
By employing a rubber layer structure with a conical opening and conical surface at the valve core and mounting channel of the cylinder, as well as a multi-layer rubber layer design, the problems of insufficient sealing performance of traditional cylinders and inconvenient valve core maintenance are solved, achieving efficient sealing and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-19
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional cylinders lack an effective sealing structure at the connection between the valve core and the mounting channel, leading to gas leakage. Furthermore, valve core maintenance is inconvenient, increasing maintenance costs.
The rubber layer structure with a conical opening and conical surface, combined with multi-layer rubber layers and threaded connection design, enhances sealing performance and simplifies the valve core disassembly process through threaded connection.
It effectively prevents gas leakage, improves sealing performance, simplifies valve core maintenance procedures, reduces maintenance costs, and ensures stable operation of the cylinder under high pressure.
Smart Images
Figure CN224064615U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cylinder manufacturing, and in particular to a novel cylinder. Background Technology
[0002] Traditional cylinders have several shortcomings in terms of sealing. First, the connection between the valve core and the mounting channel usually lacks an effective sealing structure, allowing gas to easily leak from the connection gap, reducing the cylinder's working efficiency and potentially causing safety hazards due to gas leakage. Second, the maintenance and replacement of the valve core are inconvenient. The valve core of traditional cylinders is often fixed internally, making disassembly and installation complex, requiring a lot of time and effort, and increasing maintenance costs. Utility Model Content
[0003] The purpose of this invention is to provide a new type of cylinder that has high sealing performance and is easy to disassemble.
[0004] The purpose of this utility model is achieved as follows: A novel cylinder includes a cylinder body, with a front end cover and a rear end cover at both ends of the cylinder body. A piston rod is provided inside the cylinder body, with one end of the piston rod extending from the front end cover and the other end of the piston rod having a piston extending outward from the piston. The front end cover and the rear end cover have vent holes and mounting channels, with the mounting channels communicating with the vent holes. A valve core is provided within the mounting channels. Mounting holes are provided on both the front end cover and the rear end cover, with the mounting holes and mounting channels located on the same axis. The valve core is encased in a steel shell, which has external threads. The valve core outer body is connected to the mounting channels via threads. The steel shell extends to the outside of the valve core's air inlet and has a connecting cylinder, with a sealing cap at the other end of the connecting cylinder.
[0005] Preferably, the inner side of the installation channel is provided with a conical opening, the steel outer shell is provided with a conical surface that matches the conical opening, and a rubber layer is provided on the conical surface.
[0006] Preferably, the sealing cover has a cylindrical structure, and the outer side of the sealing cover is provided with external threads. The sealing cover is connected to the mounting hole by threads.
[0007] Preferably, the connecting cylinder located between the valve core and the sealing cover is provided with multiple sets of through holes.
[0008] Preferably, the outer side of the installation channel is machined with an inner step, the outer side of the steel shell is provided with a protrusion, the inner side of the protrusion is provided with a rubber layer, and the rubber layer abuts against the inner step.
[0009] Preferably, the outer diameter surface of the mounting hole is machined with an outer step, and the inner side of the sealing cover is provided with a rubber ring that abuts against the outer step.
[0010] Compared with the prior art, the advantages of this utility model are:
[0011] 1. By incorporating a tapered opening and tapered surface at the connection between the valve core and the mounting channel, along with a first rubber layer, the gaps between components are effectively filled, preventing gas leakage. Simultaneously, the inner step on the outer side of the mounting channel mates with the external protrusion of the steel outer shell and the second rubber layer, while the outer step on the outer side of the mounting hole mates with the inner rubber ring of the sealing cover, forming a multi-layered sealing system. This further enhances the overall sealing performance of the cylinder, ensuring that it maintains a good sealing effect even under high-pressure, high-frequency operating environments, guaranteeing stable and efficient cylinder operation.
[0012] 2. The sealing cover adopts a cylindrical structure with external threads on its outer side, which connect to the mounting hole via threads. This design makes the installation and removal of the sealing cover very convenient. When the valve core needs to be repaired, simply rotate the sealing cover, and the valve core can be pulled out from the installation channel through the connecting cylinder. This avoids the inconvenience of internal operation and replacement of the valve core in traditional cylinders, greatly simplifying the maintenance process, reducing maintenance difficulty and cost, and improving the maintainability of the equipment. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle.
[0015] The components include: 1. Cylinder block; 2. Front end cover; 3. Rear end cover; 4. Piston rod; 5. Piston; 6. Vent hole; 7. Mounting channel; 701. Conical opening; 702. Inner step; 8. Valve core; 801. Steel outer shell; 8011. Conical surface; 8012. Protrusion; 9. Mounting hole; 901. Outer step; 10. Connecting cylinder; 1001. Through hole; 11. Sealing cover; 12. First rubber layer; 13. Second rubber layer. Detailed Implementation
[0016] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.
[0017] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0018] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] like Figure 1-2 As shown, a novel cylinder includes a cylinder body 1, with a front end cover 2 and a rear end cover 3 at both ends of the cylinder body 1. A piston rod 4 is provided inside the cylinder body 1, with one end of the piston rod 4 extending out from the front end cover 2 and a piston 5 attached to the other end of the piston rod 4, extending outward from the outside of the piston 4. The front end cover 2 and the rear end cover 3 are provided with vent holes 6 and mounting channels 7, which are connected to the vent holes 6. A valve core 8 is provided inside the mounting channels 7. Mounting holes 9 are provided on both the front end cover 2 and the rear end cover 3, and the mounting holes 9 and the mounting channels 7 are located on the same axis. The valve core 8 is wrapped with a steel shell 801, which has external threads. The outer body of the valve core 8 is connected to the mounting channels 7 by threads. The steel shell 801 extends to the outside of the air inlet of the valve core 8 and is provided with a connecting cylinder 10. The other end of the connecting cylinder 10 is provided with a sealing cap 11.
[0020] like Figure 2As shown, the inner side of the installation channel 7 is provided with a conical opening 701, and the steel outer shell 801 is provided with a conical surface 8011 that matches the conical opening 701. A first rubber layer 12 is provided on the conical surface 8011. This design enhances the sealing between the valve core and the installation channel. The rubber layer can effectively fill the gap and prevent gas leakage. At the same time, the conical structure makes the rubber more tightly compressed, further improving the sealing effect.
[0021] like Figure 2 As shown, the sealing cover 11 has a cylindrical structure. The outer side of the sealing cover 11 is provided with external threads. The sealing cover 11 is connected to the mounting hole 9 by threads, which facilitates the installation and disassembly of the sealing cover. At the same time, when the valve core is being repaired, the valve core can be removed by rotating the sealing cover, which is more convenient and avoids the inconvenience of replacing the valve core inside.
[0022] like Figure 2 As shown, the connecting cylinder 10 located between the valve core 8 and the sealing cover 11 is provided with multiple sets of through holes 1001. Gas is connected to the valve core through the through holes to realize gas flow.
[0023] like Figure 2 As shown, the outer side of the mounting channel 7 has an inner step 702 machined on it, and the outer side of the steel shell 801 has a protrusion 8012. The inner side of the protrusion 8012 has a second rubber layer 13, which abuts against the inner step 702. The outer radial surface of the mounting hole 9 has an outer step 901 machined on it, and the inner side of the sealing cover 11 has a rubber ring that abuts against the outer step 901. The inner step on the outer side of the mounting channel cooperates with the protrusion and the second rubber layer on the outer side of the steel shell, and the outer step on the outer side of the mounting hole cooperates with the inner rubber ring of the sealing cover. This further enhances the overall sealing performance of the cylinder. When the second rubber layer and the rubber ring are compressed, they can fit tightly against the step surface to prevent gas leakage. At the same time, the rubber ring can also play a role in buffering and shock absorption, reducing wear caused by vibration between components and extending the service life of the cylinder.
[0024] The working principle of this utility model is explained as follows: When the high-sealing cylinder is working, gas enters the installation channel through the vent holes on the front and rear covers. The gas connects to the valve core through multiple sets of through holes on the connecting cylinder, realizing gas flow. When the gas enters the cylinder body, it pushes the piston to move, which in turn drives the piston rod to move, completing the extension and retraction of the cylinder. In terms of sealing, the steel shell of the valve core has a conical surface that matches the conical opening of the installation channel, and there is a first rubber layer on the conical surface, which can effectively fill the gap and prevent gas leakage. The conical structure also makes the rubber more tightly compressed, improving the sealing effect. At the same time, the inner step on the outside of the installation channel cooperates with the outer protrusion of the steel shell and the second rubber layer, and the outer step on the outside of the installation hole cooperates with the inner rubber ring of the sealing cover, further preventing gas leakage. The rubber ring also plays a role in buffering and shock absorption, reducing component wear. When the valve core needs to be maintained, the sealing cover is rotated. Since the sealing cover is connected to the installation hole by threads, and the valve core is connected to the sealing cover by the connecting cylinder, rotating the sealing cover 11 can bring out the valve core for easy replacement.
[0025] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.
Claims
1. A new type of cylinder, comprising a cylinder body, a front end cover and a rear end cover arranged at both ends of the cylinder body respectively, a piston rod arranged inside the cylinder body, one end of the piston rod leading out from the front end cover, a piston arranged on the other end of the piston rod and extending outside the piston; characterized in that, The front end cover and the rear end cover are provided with air holes and installation channels, the installation channels are communicated with the air holes, and valve cores are arranged in the installation channels; installation holes are arranged on the front end cover and the rear end cover, the installation holes and the installation channels are located on the same axis, the valve cores are wrapped with steel shells, the steel shells are provided with external threads, and the valve core outer bodies and the installation channels are connected through threads; the steel shells extend to the outside of the air inlet of the valve cores and are provided with connecting barrels, and the other ends of the connecting barrels are provided with sealing covers.
2. A new cylinder as claimed in claim 1, wherein, The inner sides of the installation channels are provided with conical ports, the steel shells are provided with conical surfaces matched with the conical ports, and the conical surfaces are provided with first rubber layers.
3. A new cylinder as claimed in claim 1, wherein, The sealing covers are in a barrel type structure, the outer vertical surfaces of the sealing covers are provided with external threads, and the sealing covers and the installation holes are connected through threads.
4. A new cylinder as claimed in claim 1, wherein, A plurality of groups of through holes are arranged on the connecting barrels between the valve cores and the sealing covers.
5. A new cylinder as claimed in claim 1, wherein, The outer sides of the installation channels are turned to have inner side steps, the outer sides of the steel shells are provided with protrusions, the inner sides of the protrusions are provided with second rubber layers, and the second rubber layers are in contact with the inner side steps.
6. A new cylinder as claimed in claim 1, wherein, The outer side steps are turned on the outer side surfaces of the installation holes, and the inner sides of the sealing covers are provided with rubber rings in contact with the outer side steps.