Sealing ring for air cylinder

Abstract

The sealing ring for the air cylinder comprises a ring body, the longitudinal section of the ring body is rectangular, an annular groove is formed in the top face of the ring body, an elastic metal ring is arranged in the annular groove and comprises an inner ring body and an outer ring body, the lower edge of the inner ring body is connected with the lower edge of the outer ring body, and an annular space with an upward opening is formed. The inner ring of the elastic metal ring abuts against the inner side wall of the annular groove, and the outer ring of the elastic metal ring abuts against the outer side wall of the annular groove. According to the utility model, the elastic metal ring is arranged in the ring body, so that the ring body is supported, and the sealing effect of the outer ring of the ring body on the cylinder body is improved.

Description

Technical Field

[0001] The utility model belongs to the field of cylinder sealing, in particular to a sealing ring for a cylinder. Background Art

[0002] Currently, sealing rings are commonly used in cylinder structures to achieve tightness, preventing the escape of high-pressure gas and preventing oil and debris from entering the cylinder. Due to the frequent frictional forces acting on the sealing rings, they can become heavily worn after prolonged use. If the sealing rings are not replaced promptly, the cylinder's tightness can be compromised, easily leading to leakage of high-pressure gas. Furthermore, oil and other impurities can easily enter the cylinder, affecting its normal operation. Utility Model Content

[0003] In view of this, the present invention aims to provide a sealing ring for a cylinder to achieve stable and good sealing of the cylinder.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] A sealing ring for a cylinder includes a ring body, the longitudinal cross-section of the ring body is rectangular, a ring groove is provided on the top surface of the ring body, an elastic metal ring is provided in the ring groove, the elastic metal ring includes an inner ring and an outer ring, the lower edges of the inner ring and the outer ring are connected to form an annular space with an opening facing upward, the inner ring of the elastic metal ring abuts the inner side wall of the ring groove, and the outer ring abuts the outer side wall of the ring groove.

[0006] Furthermore, a plurality of grooves are evenly arranged in the circumferential direction of the outer ring of the elastic metal ring. The upper end of the groove is an open end extending from the upper edge of the outer ring, and the lower end of the groove is a closed end located at the connection between the inner ring and the outer ring of the elastic metal ring.

[0007] Furthermore, a plurality of positioning protrusions are provided outwardly in the circumferential direction on the upper portion of the inner ring of the elastic metal ring, and positioning grooves are provided on the inner side wall of the annular groove corresponding to the positioning protrusions, and the positioning protrusions are snap-fitted into the corresponding positioning grooves.

[0008] Furthermore, a convex ring is integrally formed at the top of the outer side wall of the ring groove, and a slot corresponding to the outer ring of the elastic metal ring is provided at the junction of the convex ring and the outer side wall, and the top of the outer ring is inserted into the slot.

[0009] Furthermore, the annular groove is a tapered annular groove with an opening facing upward, wherein the inner side wall of the annular groove is vertically arranged and the outer side wall thereof is inclinedly arranged.

[0010] Furthermore, the ring body includes a lower ring body portion and an upper ring body portion, the outer diameter of the upper ring body portion is larger than the outer diameter of the lower ring body portion, and the annular groove is provided in the upper ring body portion.

[0011] Furthermore, an anti-slip groove is provided at the center of the inner ring of the ring body.

[0012] Compared with the prior art, the cylinder sealing ring described in the present invention has the following advantages:

[0013] (1) In the present invention, the elastic metal ring inside the ring body is provided to support the ring body and improve the sealing effect of the outer ring of the ring body on the cylinder body.

[0014] (2) In the present invention, a plurality of grooves are evenly arranged on the outer ring of the elastic metal ring, which facilitates the installation of the elastic metal ring and improves its supporting performance for the ring body.

[0015] (3) In the present invention, a slot and a positioning groove are provided in the annular cavity of the ring body, and a positioning protrusion is provided corresponding to the positioning groove of the elastic metal ring. The positioning protrusion and the positioning groove are matched and installed, and the outer ring of the elastic metal ring is inserted into the slot to improve the installation stability of the elastic metal ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic structural diagram of a cylinder sealing ring according to an embodiment of the present utility model;

[0018] Figure 2 Schematic diagram of the ring structure in this embodiment;

[0019] Figure 3 for Figure 2 B enlarged view;

[0020] Figure 4 This is a top view of the elastic metal ring in this embodiment;

[0021] Figure 5 for Figure 4 AA view of the .

[0022] Description of reference numerals:

[0023] 1-ring body; 11-lower ring body; 12-upper ring body; 13-sealing ear; 15-anti-slip ring groove; 16-ring groove; 161-inner wall; 162-outer wall; 163-positioning groove; 164-slot; 165-convex ring; 2-elastic metal ring; 21-inner ring; 22-outer ring; 23-groove; 24-positioning protrusion. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] like Figure 1The figure shows a cylinder sealing ring comprising a ring body 1, which is a rubber member having a rectangular longitudinal cross-section. For ease of illustration, the centerline of ring body 1 is vertically positioned. An annular groove 16 is defined on the top surface of ring body 1, within which is located an elastic metal ring 2. This elastic metal ring 2 supports ring body 1 and improves the sealing stability of the outer ring of ring body 1 against the cylinder.

[0026] The structure of ring 1 is as follows Figure 2 As shown, it includes a lower ring body 11 and an upper ring body 12 that are arranged adjacent to each other. The outer diameter of the upper ring body 12 is larger than that of the lower ring body 11. The annular groove 16 is provided in the upper ring body 12. The portion of the upper ring body 12 outside the annular groove 16 forms a sealing ear 13, which seals the cylinder. The structure of the annular groove 16 is as follows: Figure 3 As shown, the inner side wall 161 (the side wall close to the center of the ring body 1) is vertically arranged, and the outer side wall 162 (the side wall away from the center of the ring body) is inclined, so that the annular groove 16 is a tapered annular groove with the opening facing upward.

[0027] The elastic metal ring 2 is made of elastic steel sheet or copper sheet, and its shape corresponds to the ring groove 16. Figure 4 、 Figure 5 As shown, the elastic metal ring 2 includes an inner ring 21 and an outer ring 22. The inner ring 21 is vertically arranged, while the outer ring 22 is inclined. The inner ring 21 and the outer ring 22 are connected at their lower edges, forming an annular space with an upward opening. After installation, the inner ring 21 of the elastic metal ring 2 abuts the inner sidewall 161 of the annular groove 16, while the outer ring 22 abuts the outer sidewall 162 of the annular groove 16.

[0028] To facilitate the installation of the elastic metal ring 2 into the annular groove 16, a plurality of grooves 23 are uniformly formed along the circumference of the outer ring 22 of the elastic metal ring 2. The upper ends of the grooves 23 are open and extend beyond the upper edge of the outer ring 22, while the lower ends of the grooves 23 are closed and located at the junction of the inner ring 21 and the outer ring 22 of the elastic metal ring 2. The plurality of grooves 23 divide the outer ring of the elastic metal ring 2 into several sections, each of which is connected to the inner ring 21 to form a plurality of spring plates. Each spring plate can be deformed independently, thereby facilitating the installation of the elastic metal ring 2 into the annular groove 16. The formed plurality of spring plates also supports the annular groove 16, thereby improving the support of the elastic metal ring 2 for the upper ring body 12, thereby enhancing the sealing stability and sealing effect of the upper ring body 12 on the cylinder.

[0029] Furthermore, to enhance the installation stability of the elastic metal ring 2, several positioning protrusions 24 are provided on the upper portion of the inner ring 21 of the elastic metal ring 2, circumferentially outward (toward the center of the elastic metal ring). Positioning grooves 163 corresponding to these protrusions 24 are formed on the inner sidewall 161 of the annular groove 16, and the positioning protrusions 24 snap into place within these corresponding positioning grooves 163. Simultaneously, a raised ring 165 is integrally formed at the top of the outer sidewall 162 of the annular groove 16. A slot 164 corresponding to the outer ring 22 of the elastic metal ring 2 is provided at the bottom where the raised ring 165 and the outer sidewall 162 meet, and the top of the outer ring 22 is inserted into the slot 164. This structure enhances the installation stability of the elastic metal ring 2 and prevents it from falling out of the annular groove 16.

[0030] In the present invention, an anti-slip groove 15 is provided at the center of the inner ring of the ring body 1, which is matched and assembled with the clamping convex ring on the cylinder shaft to prevent the ring body 1 from sliding on the cylinder shaft, so as to achieve good sealing of the cylinder body in the present invention.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sealing ring for a cylinder, characterized in that: The invention comprises a ring body (1), wherein the longitudinal section of the ring body (1) is rectangular, and an annular groove (16) is provided on the top surface of the ring body (1). An elastic metal ring (2) is provided in the annular groove (16), and the elastic metal ring (2) comprises an inner ring (21) and an outer ring (22). The lower edges of the inner ring (21) and the outer ring (22) are connected to form an annular space with an opening facing upwards, and the inner ring (21) of the elastic metal ring (2) abuts against the inner side wall (161) of the annular groove (16), and the outer ring (22) abuts against the outer side wall (162) of the annular groove (16).

2. A cylinder sealing ring according to claim 1, characterized in that: The outer ring (22) of the elastic metal ring (2) is provided with a plurality of grooves (23) uniformly arranged in a circumferential direction. The upper ends of the grooves (23) are open ends and extend beyond the upper edge of the outer ring (22). The lower ends of the grooves (23) are closed ends and are located at the connection between the inner ring (21) and the outer ring (22) of the elastic metal ring (2).

3. The cylinder sealing ring according to claim 1, characterized in that: A plurality of positioning protrusions (24) are provided on the upper portion of the inner ring (21) of the elastic metal ring (2) in an outward circumferential direction, and positioning grooves (163) are provided on the inner side wall (161) of the annular groove (16) corresponding to the positioning protrusions (24), and the positioning protrusions (24) are snap-fitted into the corresponding positioning grooves (163).

4. A cylinder sealing ring according to claim 3, characterized in that: A convex ring (165) is integrally formed at the top of the outer side wall (162) of the annular groove (16); a slot (164) corresponding to the outer ring (22) of the elastic metal ring (2) is provided at the junction of the convex ring (165) and the outer side wall (162); the top of the outer ring (22) is inserted into the slot (164).

5. The cylinder sealing ring according to claim 1, characterized in that: The annular groove (16) is a tapered annular groove with an opening facing upward, wherein the inner side wall (161) of the annular groove (16) is vertically arranged, and the outer side wall (162) thereof is inclinedly arranged.

6. The cylinder sealing ring according to claim 1, characterized in that: The ring body (1) comprises a lower ring body portion (11) and an upper ring body portion (12); the outer diameter of the upper ring body portion (12) is larger than the outer diameter of the lower ring body portion (11); and the annular groove (16) is provided in the upper ring body portion (12).

7. The cylinder sealing ring according to claim 1, characterized in that: An anti-slip groove (15) is provided at the center of the inner ring of the ring body (1).

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