Air cylinder end cover connector
By setting a cross-shaped boss and internal thread connection on the cylinder end cap joint, the problems of easy damage and inconvenient installation of the traditional cylinder end cap joint structure are solved, thereby improving the stability and sealing reliability of the cylinder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG YILAN ALUMINUM
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional cylinder end cap joints have a simple design, lack reinforcement, are prone to deformation and damage, have inflexible connection methods, are inconvenient to install and disassemble, and affect the working stability and sealing reliability of the cylinder.
A cross-shaped boss is provided on the rear cover of the cylinder end cover joint to enhance structural strength and provide a stable installation platform for the connector and sealing cover. The internal thread connection facilitates the threaded connection with the air pipe connector, ensuring the tightness and reliability of the connection.
It improves the stability and reliability of cylinder operation, ensures the stability of sealing performance, simplifies the installation and disassembly process, and enhances the overall installation and fixation.
Smart Images

Figure CN224200905U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cylinder technology, specifically relating to a cylinder end cap connector. Background Technology
[0002] In the field of pneumatic transmission and automation control, cylinders, as key actuators that convert the energy of compressed air into mechanical energy, are widely used in various industrial equipment, automated production lines, and mechanical devices. Cylinder end cap joints, as important connecting components between the cylinder and external air sources and control elements, directly affect the cylinder's operational stability. Traditional cylinder end cap joints often have simple structural designs and lack effective reinforcement. During cylinder operation, they are subjected to frequent pressure changes, vibrations, and external impacts, making the end cap joints prone to deformation and damage. Furthermore, the connection methods of some cylinder end cap joints and air pipe joints on the market are not flexible enough, typically employing welding or complex snap-fit connections, making installation and disassembly inconvenient. Utility Model Content
[0003] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and to provide a cylinder end cover connector with a clever and reasonable structural design and strong practicality. A cross boss is set on the rear cover to enhance the overall structural strength, provide a stable installation platform for the connector and sealing cover, and also provide sufficient space and size for the air intake chamber and air intake hole. The internal thread of the air intake hole can facilitate the threaded connection with components such as air pipe connectors, which is convenient for actual installation and disassembly. The threaded connection can also ensure the tightness and reliability of the connection, thereby ensuring the stability and reliability of the cylinder during operation. The connector can facilitate the overall installation and fixation of the cylinder.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0005] A cylinder end cap connector includes a rear cover body and a connector. A cross-shaped boss is provided on one side of the rear cover body, and an air intake chamber is provided within the cross-shaped boss. A sealing cover plate covers and shields the top opening of the air intake chamber. The sealing cover plate and the cross-shaped boss are detachably installed. An air outlet is provided on the bottom surface of the air intake chamber. One end of the cross-shaped boss has an air intake hole communicating with the air intake chamber, and an internal thread is provided within the air intake hole. The connector is located on the cross-shaped boss and is detachably installed. The connector abuts against and is limited by the sealing cover plate. The structure is ingeniously and rationally designed, with strong practicality. The cross-shaped boss on the rear cover body enhances the overall structural strength and provides better support for the connector and sealing cover plate. The system provides a stable installation platform and ample space and dimensions for the intake chamber and intake port. The internal thread of the intake port facilitates threaded connections with components such as air pipe connectors, making installation and disassembly easier. The threaded connection also ensures the tightness and reliability of the connection, thereby ensuring the stability and reliability of the cylinder during operation. The connector facilitates the overall installation and fixation of the cylinder, and after installation, the connector presses against the sealing cover plate, providing additional fixation for the sealing cover plate and preventing it from loosening or shifting during operation. This ensures the stability of the sealing performance and improves the sealing reliability of the cylinder under various working conditions.
[0006] Furthermore, the cross-shaped boss is formed by the perpendicular intersection of two transverse bosses. An air intake chamber is provided along one of the transverse bosses within the cross-shaped boss. A stepped groove is provided at the top opening of the air intake chamber. The sealing cover is limited and engaged in the stepped groove. The two transverse bosses intersect perpendicularly and meet at the center to form a complete cross-shaped boss. The cross-shaped boss and the rear cover are integrally formed, which facilitates actual processing and ensures structural strength and stability. The cross-shaped boss design provides a stable installation platform for the sealing cover and connectors. The cross-shaped boss also raises the height of the side of the rear cover, which facilitates the processing of side holes and the reasonable placement of the air intake chamber. The top of the air intake chamber is an open end, which is covered and shielded by the sealing cover to prevent gas leakage. This design also facilitates subsequent inspection and maintenance. The stepped groove facilitates the precise engagement and positioning of the sealing cover, which is convenient for actual assembly.
[0007] Furthermore, the connector is fixedly installed on another transverse boss of the cross boss. The connector includes a connecting seat and a fixing ear. The connecting seat is fixedly connected to the transverse boss. The top surface of the connecting seat is provided with fixing ears at both ends. The fixing ears and the connecting seat are an integral structure to ensure the integrity and strength of the overall structure. The fixing ears can facilitate the connection with external components to realize the installation and connection of the cylinder. The design is reasonable and the position is reasonable. It makes full use of the space on the cross boss, so that the connector is pressed and limited on the top surface of the sealing cover after installation, ensuring the stability of the sealing performance.
[0008] Furthermore, both ends of the connector are provided with extensions, forming a U-shaped groove between the extensions and the connector. The connector is secured to the transverse boss by the U-shaped groove. The extensions are provided with stepped mounting holes, through which bolts pass and are fixed to the end face of the transverse boss. The extensions can enhance the structural strength of the connector. The U-shaped groove between the connector and the extensions at both ends facilitates the initial installation and positioning of the connector on the transverse boss, improving installation efficiency. The bolts are then used for further connection and fixation, effectively ensuring the firmness and reliability of the connection between the connector and the transverse boss. The bolt connection also facilitates subsequent disassembly and maintenance.
[0009] Furthermore, the top surface of the sealing cover is provided with a protrusion, and the protrusion is provided with an elongated slot. The design of the protrusion can improve the overall structural strength of the sealing cover and ensure the structural stability of the sealing cover at the location of the elongated slot. The elongated slot can facilitate the disassembly and assembly of the sealing cover.
[0010] Furthermore, the bottom surface of the connector is provided with a positioning slot, which matches the protrusion. The protrusion is locked in the positioning slot, and the positioning slot matches the protrusion. Together with the U-shaped slot, it can achieve precise positioning during the installation of the connector, ensuring that the mounting hole on the upper step of the extension corresponds to the hole on the transverse protrusion, so that the bolt can be screwed in for installation, effectively improving installation efficiency and preventing misalignment of the connector during installation.
[0011] Furthermore, both ends of the sealing cover are provided with stepped positioning holes. Bolts pass through the stepped positioning holes and are fixed to the end face of the stepped groove. The bolt connection can ensure the firmness and tightness of the sealing cover on the cross boss, and the installation and disassembly are convenient and simple.
[0012] Furthermore, a positioning ring is provided on the other end face of the rear cover, and a positioning slot is provided in the center of the positioning ring. The air outlet is connected to the positioning slot. The positioning slot can facilitate the installation and positioning between the rear cover and the cylinder body, improve assembly efficiency, and the positioning ring surrounds the positioning slot to form a relatively closed connection area, which plays a limiting role on the cylinder body part inserted into the connection area, ensuring the reliability of the connection between the rear cover and the cylinder body.
[0013] Furthermore, the four corners of the end face of the cross-shaped boss on the rear cover are provided with recessed cavities, and the recessed cavities are provided with arc-shaped protrusions. Stepped fixing holes are provided through the arc-shaped protrusions. The design is ingenious and reasonable. The arc-shaped protrusions increase the local strength of the end face of the rear cover and ensure the structural stability at the location of the stepped fixing holes. The stepped fixing holes can facilitate the connection between the rear cover and other components.
[0014] Furthermore, a stiffening rib is provided inside the concave cavity. The stiffening rib connects the inner wall of the concave cavity and the arc protrusion. The stiffening rib enhances the local strength, making the arc protrusion and the concave cavity structure more stable and less prone to deformation.
[0015] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:
[0016] This utility model features a clever and reasonable structural design with strong practicality. A cross-shaped boss on the rear cover enhances the overall structural strength, providing a stable mounting platform for the connectors and sealing cover. It also provides ample space and dimensions for the air intake chamber and air intake port. The internal thread of the air intake port facilitates threaded connections with components such as air pipe connectors, simplifying installation and disassembly. The threaded connection also ensures tightness and reliability at the connection point, thereby ensuring the smoothness and reliability of the cylinder during operation. The connector facilitates the overall installation and fixation of the cylinder, and after installation, it presses firmly against the sealing cover, providing additional fixation and preventing loosening or displacement during operation. This ensures the stability of the sealing performance and improves the sealing reliability of the cylinder under various working conditions. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings:
[0018] Figure 1 This is a schematic diagram of the structure of a cylinder end cap connector according to the present invention;
[0019] Figure 2 for Figure 1 A structural diagram from another perspective;
[0020] Figure 3 This is a schematic diagram of the structure of the sealing cover plate after it is installed on the cross-shaped boss in this utility model;
[0021] Figure 4 This is a schematic diagram showing the position and structure of the positioning slot on the back cover in this utility model;
[0022] Figure 5 This is a schematic diagram of the structure of the rear cover in this utility model;
[0023] Figure 6 for Figure 5 A structural diagram from another perspective;
[0024] Figure 7 This is a schematic diagram of the sealing cover plate in this utility model;
[0025] Figure 8 This is a schematic diagram of the connecting component in this utility model;
[0026] Figure 9 for Figure 8 A structural diagram from another perspective.
[0027] In the diagram: 1-Rear cover; 2-Connector; 3-Cross boss; 4-Air inlet chamber; 5-Sealing cover; 6-Air outlet; 7-Air inlet; 8-Internal thread; 9-Transverse boss; 10-Step groove; 11-Connecting seat; 12-Fixing ear; 13-Extension; 14-U-shaped groove; 15-Step mounting hole; 16-Protrusion; 17-Long slot; 18-Positioning groove; 19-Step positioning hole; 20-Positioning ring; 21-Positioning slot; 22-Recessed cavity; 23-Arched protrusion; 24-Step fixing hole; 25-Reinforcing rib; 26-Arched chamfer. Detailed Implementation
[0028] like Figures 1 to 9 As shown, this utility model discloses a cylinder end cap connector, including a rear cover body 1 and a connector 2. The rear cover body 1 has an arc-shaped chamfer 26 at its corner, which makes the overall structure more aesthetically pleasing and reduces sharp parts, thus improving safety. A cross-shaped boss 3 is provided on one side of the rear cover body 1, and an air intake chamber 4 is provided within the cross-shaped boss 3. A sealing cover plate 5 covers the top opening of the air intake chamber 4. The sealing cover plate 5 and the cross-shaped boss 3 are detachably installed. An air outlet 6 is provided on the bottom surface of the air intake chamber 4. An air inlet 7 communicating with the air intake chamber 4 is provided at one end of the cross-shaped boss 3, and an internal thread 8 is provided within the air inlet 7. The connector 2 is located on the cross-shaped boss 3 and is detachably installed. The connector 2 is abutted and limited by the sealing cover plate 5. The structural design is ingenious and reasonable. Highly practical, the rear cover 1 features a cross-shaped boss 3 to enhance overall structural strength, providing a stable mounting platform for the connector 2 and sealing cover 5. It also provides ample space and dimensions for the air intake chamber 4 and air intake port 7. The internal thread 8 of the air intake port 7 facilitates threaded connections with components such as air pipe connectors, making installation and disassembly easier. The threaded connection also ensures the tightness and reliability of the connection, thereby ensuring the stability and reliability of the cylinder during operation. The connector 2 facilitates the overall installation and fixation of the cylinder, and after installation, it presses against the sealing cover 5, providing additional fixation for the sealing cover 5 and preventing it from loosening or shifting during operation. This ensures the stability of the sealing performance and improves the sealing reliability of the cylinder under various working conditions.
[0029] The cross-shaped boss 3 is formed by the perpendicular intersection of two transverse bosses 9. An air intake chamber 4 is provided in the cross-shaped boss 3 along the direction of one of the transverse bosses 9. A stepped groove 10 is provided at the top opening end of the air intake chamber 4. The sealing cover 5 is limited and engaged in the stepped groove 10. The two transverse bosses 9 intersect perpendicularly and meet at the center to form a complete cross-shaped boss 3. The cross-shaped boss 3 and the rear cover 1 are integrally formed, which facilitates actual processing and ensures structural strength and stability. The cross-shaped boss 3 design can provide a stable installation platform for the sealing cover 5 and the connector 2. The cross-shaped boss 3 also raises the height of the side of the rear cover 1, which facilitates the processing of side holes and the reasonable setting of the air intake chamber 4. The top of the air intake chamber 4 is an open end, which is covered and shielded with the sealing cover 5 to prevent gas leakage. This design can also facilitate subsequent inspection and maintenance. The stepped groove 10 can facilitate the precise engagement and positioning of the sealing cover 5 and facilitate actual assembly.
[0030] The connector 2 is fixedly installed on another transverse boss 9 on the cross boss 3. The connector 2 includes a connecting seat 11 and a fixing ear 12. The connecting seat 11 is fixedly connected to the transverse boss 9. The top surface of the connecting seat 11 is provided with fixing ears 12 at both ends. The fixing ears 12 and the connecting seat 11 are integrated into one structure to ensure the integrity and strength of the overall structure. The fixing ears 12 can facilitate the connection with external components to realize the installation and connection of the cylinder. The design is reasonable and the position is reasonable. It makes full use of the space on the cross boss 3 so that the connector 2 is pressed and limited on the top surface of the sealing cover plate 5 after installation, ensuring the stability of the sealing performance.
[0031] Both ends of the connector 11 are provided with extensions 13, and a U-shaped groove 14 is formed between the extensions 13 and the connector 11. The connector 11 is limited and locked onto the transverse boss 9 by the U-shaped groove 14. The extensions 13 are provided with stepped mounting holes 15. Bolts pass through the stepped mounting holes 15 and are fixed to the end face of the transverse boss 9. The extensions 13 can enhance the structural strength of the connector 11. The U-shaped groove 14 is formed between the connector 11 and the extensions 13 at both ends, which facilitates the initial installation and positioning of the connector 11 on the transverse boss 9 and improves the installation efficiency. The bolts are then used for further connection and fixation, which effectively ensures the firmness and reliability of the connection between the connector 11 and the transverse boss 9. The bolt connection also facilitates subsequent disassembly and maintenance.
[0032] The top surface of the sealing cover 5 is provided with a protrusion 16, and the protrusion 16 is provided with an elongated slot 17. The design of the protrusion 16 can improve the overall structural strength of the sealing cover 5 and ensure the structural stability of the sealing cover 5 at the location of the elongated slot 17. The elongated slot 17 facilitates the installation and removal of the sealing cover 5. The bottom surface of the connecting seat 11 is provided with a positioning groove 18, which matches the protrusion 16. The protrusion 16 is limited and engaged in the positioning groove 18. The positioning groove 18 and the protrusion 16, together with the U-shaped groove 14, can achieve precise positioning of the connecting seat 11 during installation, ensuring that the mounting hole 15 on the upper step of the extension 13 corresponds to the hole on the transverse boss 9, so as to facilitate the screwing in of the bolts, effectively improving the installation efficiency and preventing the installation of the connecting seat 11 from being misaligned.
[0033] Both ends of the sealing cover 5 are provided with stepped positioning holes 19. Bolts pass through the stepped positioning holes 19 and are fixed to the end face of the stepped groove 10. The bolt connection can ensure the firmness and tightness of the sealing cover 5 on the cross boss 3, and the installation and disassembly are convenient and simple. A positioning ring 20 is provided on the other end face of the rear cover 1. The positioning ring 20 has a positioning slot 21 in the center. The air outlet 6 communicates with the positioning slot 21. The positioning slot 21 can facilitate the installation and positioning between the rear cover 1 and the cylinder body, improve the assembly efficiency, and the positioning ring 20 surrounds the positioning slot 21 to form a relatively closed connection area, which plays a limiting role for the cylinder body part inserted into the connection area, ensuring the reliability of the connection between the rear cover 1 and the cylinder body.
[0034] The rear cover 1 has a cross-shaped boss 3 with recessed cavities 22 at each of its four corners. Each recessed cavity 22 contains an arc-shaped protrusion 23, through which a stepped fixing hole 24 is threaded. This ingenious and reasonable design increases the local strength of the rear cover 1's end face, ensuring structural stability at the location of the stepped fixing hole 24. The stepped fixing hole 24 facilitates the connection between the rear cover 1 and other components. A reinforcing rib 25 is provided within the recessed cavity 22, connecting the inner wall of the recessed cavity 22 to the arc-shaped protrusion 23. The reinforcing rib 25 enhances local strength, making the structure of the arc-shaped protrusion 23 and the recessed cavity 22 more stable and less prone to deformation.
[0035] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.
Claims
1. A cylinder end cap connector, characterized in that: Including the back cover and connectors; A cross-shaped protrusion is provided on one side end face of the rear cover. An air intake chamber is provided inside the cross-shaped protrusion. A sealing cover plate covers and shields the top opening end of the air intake chamber. The sealing cover plate and the cross-shaped protrusion are detachably installed. An air outlet is provided on the bottom surface of the air intake chamber. One end of the cross-shaped boss is provided with an air inlet hole that communicates with the air inlet chamber, and the air inlet hole is provided with an internal thread. The connector is located on the cross-shaped protrusion, and the connector and the cross-shaped protrusion are detachably installed. The connector is also abutted against and limited by the sealing cover plate.
2. A cylinder end cap connector according to claim 1, characterized in that: The cross-shaped boss is formed by two horizontal bosses intersecting perpendicularly. The air intake chamber is provided inside the cross-shaped boss along the direction of one of the horizontal bosses. The top opening end of the air intake chamber is provided with a stepped groove, and the sealing cover is limited and engaged in the stepped groove.
3. A cylinder end cap connector according to claim 2, characterized in that: The connector is fixedly installed on another transverse boss on the cross boss. The connector includes a connecting seat and a fixing lug. The connecting seat is fixedly connected to the transverse boss, and the fixing lug is provided at both ends of the top surface of the connecting seat.
4. A cylinder end cap connector according to claim 3, characterized in that: Both ends of the connector are provided with extensions, and a U-shaped groove is formed between the extension and the connector. The connector is limited and locked onto the transverse boss by the U-shaped groove. The extension is provided with a stepped mounting hole, and the bolt passes through the stepped mounting hole and is fixed to the end face of the transverse boss.
5. A cylinder end cap connector according to claim 3, characterized in that: The top surface of the sealing cover is provided with a protrusion, and the protrusion is provided with an elongated slot.
6. A cylinder end cap connector according to claim 5, characterized in that: The bottom surface of the connector is provided with a positioning slot, which matches the protrusion, and the protrusion is limited and engaged in the positioning slot.
7. A cylinder end cap connector according to claim 2, characterized in that: Both ends of the sealing cover are provided with stepped positioning holes, and bolts pass through the stepped positioning holes and are fixed to the end face of the stepped groove.
8. A cylinder end cap connector according to claim 1, characterized in that: A positioning ring is provided on the other end face of the rear cover, and a positioning groove is provided in the center of the positioning ring. The air vent is connected to the positioning groove.
9. A cylinder end cap connector according to claim 1, characterized in that: The rear cover has recessed cavities at the four corners of the end face where the cross-shaped boss is located. An arc-shaped protrusion is provided in the recessed cavity, and a stepped fixing hole is provided through the arc-shaped protrusion.
10. A cylinder end cap connector according to claim 9, characterized in that: A stiffening rib is provided inside the recessed cavity, and the stiffening rib is connected between the inner sidewall of the recessed cavity and the arc protrusion.