Cylinder ring outer retaining ring

Abstract

The application provides a cylinder ring outer stop ring, which is characterized by comprising a base plate and a stop ring on the base plate; a cylinder rod through hole is arranged in the middle of the base plate; the stop ring comprises a base part, a V-shaped groove is arranged at the end of the base part away from the base plate, a containing groove is arranged at the groove bottom of the V-shaped groove, the containing groove is communicated with the V-shaped groove, a convex part is formed between the side wall of the V-shaped groove and the side wall of the containing groove, and the containing groove extends to the base part and the base part is basically connected; the thickness of the base part along the radial direction of the stop ring gradually decreases from the side basically connected to the side away from the base plate. The application sets the stop ring on the inner side of the base plate, sets the V-shaped groove on the base part of the stop ring and the containing groove communicated with the V-shaped groove, so that the inner part and the outer part of the base part have a space for containing the sealing ring, the sealing ring is combined with the stop ring in the process of being pressed out, and the sealing is reformed, the reliability of the cylinder work is improved, and the safety is improved.

Description

Technical Field

[0001] This invention belongs to the field of cylinder technology, and in particular relates to a cylinder sealing ring outer retaining ring. Background Technology

[0002] A cylinder is an actuator that guides a piston to perform linear reciprocating motion within the cylinder. Compared to electric actuators, cylinders can operate reliably under harsh conditions, are simple to operate, and are essentially maintenance-free. Cylinders excel at reciprocating linear motion, making them particularly suitable for the most common conveying requirements in industrial automation—the linear transport of workpieces. Moreover, stable speed control can be easily achieved by simply adjusting the one-way throttle valves installed on both sides of the cylinder. However, with prolonged use, cylinder seals are prone to being squeezed out or even falling off, resulting in poor sealing between the cylinder rod and the end cap, or even an inability to build up pressure, thus affecting the cylinder's performance. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a cylinder sealing ring outer retaining ring.

[0004] To achieve the above objectives, the technical solution created by this invention is implemented as follows:

[0005] A cylinder sealing ring outer retaining ring includes a base plate and a stop ring on the base plate; the base plate has a cylinder rod through hole in the middle; the stop ring includes a base portion, a V-shaped groove is provided at the end of the base portion away from the base plate, and a receiving groove is provided at the bottom of the V-shaped groove, the receiving groove is connected to the V-shaped groove, a protrusion is formed between the side wall of the V-shaped groove and the side wall of the receiving groove, and the receiving groove extends to the connection between the base portion and the base plate; the thickness of the base portion along the radial direction of the stop ring gradually decreases from the side connected to the base plate to the side away from the base plate.

[0006] Furthermore, the width of the receiving groove along the radial direction of the stop ring is greater than the width of the bottom of the V-shaped groove.

[0007] Furthermore, the length of the stop ring along the axial direction is 3-10 mm.

[0008] Furthermore, the thickness at the maximum thickness position of the stop ring is 1-5mm.

[0009] Furthermore, the angle between the outer wall of the stop ring and the surface of the substrate is an obtuse angle, and the diameter at the maximum inner diameter of the outer wall of the stop ring is smaller than the diameter of the cylinder rod mounting hole on the end cap, thus forming a deformation space on the outside of the stop ring.

[0010] Furthermore, the diameter at the minimum inner diameter of the inner wall of the stop ring is larger than the diameter of the cylinder rod through hole, thus forming a deformation space inside the stop ring.

[0011] Furthermore, the inclination angle of the outer wall of the stop ring is 0-20 degrees.

[0012] Furthermore, the inclination angle of the inner sidewall of the stop ring is 0-20 degrees.

[0013] Furthermore, the stop ring and the base plate are integrally formed.

[0014] Compared with existing technologies, the present invention has the following advantages:

[0015] This invention features a rational structural design. By setting a stop ring on the inner side of the base plate, and setting a V-shaped groove and a receiving groove communicating with the V-shaped groove on the base part, there is space to accommodate the sealing ring between the inner and outer parts of the base part. Furthermore, there is deformation space on the inner side of the inner part, the outer side of the outer part, and between the inner and outer parts. During the process of the sealing ring being pressed out, it will combine with the stop ring to re-form a seal, which improves the reliability and safety of the cylinder operation. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A schematic diagram of the structure created by this invention;

[0018] Figure 2 A schematic diagram of the connection between the substrate and the stop ring in this invention;

[0019] Figure 3 A schematic diagram illustrating the stop ring portion of this invention;

[0020] Figure 4 This invention provides a schematic diagram for installation and application.

[0021] Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle;

[0022] Figure 6 This is a schematic diagram showing the outer part length being greater than the inner part length in an embodiment of the present invention. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] A cylinder sealing ring outer retaining ring, such as Figures 1 to 6 As shown, the system includes a substrate 1 and a stop ring 2 on the substrate. A cylinder rod through-hole 3 is provided in the middle of the substrate. This through-hole is larger than the diameter of the cylinder rod 16 but smaller than the diameter of the end cap inner hole 17. The stop ring includes a base portion 4. A V-groove 5 is provided at the end of the base portion away from the substrate, and a receiving groove 6 is provided at the bottom of the V-groove. The receiving groove communicates with the V-groove, forming a slit 7. The width of the receiving groove along the radial direction of the stop ring is greater than the width of the bottom of the V-groove (along the radial direction of the stop ring). A protrusion 8 is formed between the sidewall of the V-groove and the sidewall of the receiving groove. When the sealing ring 9 is pressed outward, the sealing ring partially gets stuck in the receiving groove. The protrusion helps to retain the sealing ring and prevent it from detaching from the stop ring. The thickness of the base portion along the radial direction of the stop ring gradually decreases from the side connected to the base portion towards the side away from the substrate. For example, the axial length of the stop ring is 3-10 mm. The thickness at the maximum thickness position of the stop ring is 1-5 mm. Preferably, the stop ring and the base plate are integrally formed.

[0028] Since the receiving groove extends to the connection between the base and the base, the base forms two parts, an inner part 10 and an outer part 11, on both sides of the gap. When the cylinder sealing ring outer retaining ring created in this invention is installed, during the process of the retaining ring being inserted into the gap between the cylinder rod and the inner hole of the end cover, the inner and outer parts of the base are allowed to deform toward the gap, that is, the two parts are allowed to shrink toward the gap, so that the retaining ring can be smoothly inserted into the gap between the cylinder rod and the inner hole of the end cover.

[0029] The slot on the stop ring is equivalent to providing an installation groove structure for the extruded sealing ring. In an optional embodiment, the length of the outer part along the axial direction of the stop ring is greater than the length of the inner part along the axial direction of the stop ring. In this scheme, when the sealing ring is squeezed outward, it is blocked by the stop ring, making it easier for the sealing ring to enter the receiving groove through the V-groove.

[0030] This invention creates an outer retaining ring for the cylinder seal, ensuring the reliability of the seal during use. Even if the seal deforms or is extruded during cylinder operation, the extruded seal will be blocked by the retaining ring and trapped between the cylinder rod and the end cap, preventing the seal from falling out and effectively maintaining its sealing function. Furthermore, even if the cylinder rod gets stuck during the outward extrusion of the seal, it is permissible, as it at least ensures that the cylinder will not leak pressure, providing reliable safety. When the seal is deformed or detached during compression, it accumulates inside the retaining ring, thus re-establishing a seal. Furthermore, since there is a slot in the base of the stop ring and the front end of the slot is a V-groove, when the sealing ring is squeezed outward, it will enter the slot through the V-groove, which will expand the inner and outer parts of the base. It also allows the inner wall of the inner part to contact the cylinder rod to form an internal seal, and the outer part to contact the inner wall of the mounting hole of the end cover to form an external seal. Even if the sealing ring loses its sealing function, the stop ring can still maintain a certain degree of sealing to prevent the cylinder from depressurizing instantly.

[0031] The cylinder sealing ring provided by this invention has a fixing hole, which is fixed to the cylinder end cap 15 by a screw 14 passing through the fixing hole. Typically, the inclination angle of the outer wall of the stop ring is 0-20 degrees. The inclination angle of the inner wall of the stop ring is also 0-20 degrees. The angle between the outer wall of the stop ring and the surface of the substrate is obtuse. The diameter at the maximum inner diameter of the outer wall of the stop ring is smaller than the diameter of the cylinder rod mounting hole on the end cap, forming an external deformation space 12 on the outside of the stop ring. The diameter at the minimum inner diameter of the inner wall of the stop ring is larger than the diameter of the cylinder rod through hole, forming an internal deformation space 13 on the inside of the stop ring.

[0032] This invention features a rational structural design. By setting a stop ring on the inner side of the base plate, and setting a V-shaped groove and a receiving groove communicating with the V-shaped groove on the base part, there is space to accommodate the sealing ring between the inner and outer parts of the base part. Furthermore, there is deformation space on the inner side of the inner part, the outer side of the outer part, and between the inner and outer parts. During the process of the sealing ring being pressed out, it will combine with the stop ring to re-form a seal, which improves the reliability and safety of the cylinder operation.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cylinder sealing ring outer retaining ring, characterized in that: The system includes a substrate and a stop ring on the substrate; a cylinder rod through hole is provided in the middle of the substrate; the stop ring includes a base portion, a V-shaped groove is provided at the end of the base portion away from the substrate, and a receiving groove is provided at the bottom of the V-shaped groove, the receiving groove is connected to the V-shaped groove, a protrusion is formed between the side wall of the V-shaped groove and the side wall of the receiving groove, and the receiving groove extends to the connection point between the base portion and the substrate; the thickness of the base portion along the radial direction of the stop ring gradually decreases from the side connected to the substrate to the side away from the substrate.

2. The cylinder sealing ring outer retaining ring according to claim 1, characterized in that: The width of the receiving groove along the radial direction of the stop ring is greater than the width of the bottom of the V-shaped groove.

3. The cylinder sealing ring outer retaining ring according to claim 1, characterized in that: The length of the stop ring along the axial direction is 3-10mm.

4. The cylinder sealing ring outer retaining ring according to claim 1, characterized in that: The thickness of the stop ring at its maximum thickness position is 1-5mm.

5. The cylinder sealing ring outer retaining ring according to claim 1, characterized in that: The angle between the outer wall of the stop ring and the surface of the substrate is an obtuse angle.

6. The cylinder sealing ring outer retaining ring according to claim 1, characterized in that: The diameter at the minimum inner diameter of the inner wall of the stop ring is greater than the diameter of the cylinder rod through hole.

7. The cylinder sealing ring outer retaining ring according to claim 1, characterized in that: The inclination angle of the outer wall of the stop ring is 0-20 degrees.

8. The cylinder sealing ring outer retaining ring according to claim 1, characterized in that: The inclination angle of the inner wall of the stop ring is 0-20 degrees.

9. The cylinder sealing ring outer retaining ring according to claim 1, characterized in that: The stop ring and the base plate are integrally formed.

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