Hydraulic quick connector

Abstract

The utility model provides a hydraulic quick connector, and belongs to the technical field of quick connectors. The problem that in the prior art, steel balls are prone to damage is solved. The one-way valve connector comprises a connector body, a one-way valve element and a connector outer sleeve, the connector body and the connector outer sleeve are both in a hollow cylinder shape, the one-way valve element is fixedly installed in the connector body, one end of the connector body is a polygonal flange body, and a plurality of through installation holes which are arrayed in a circumferential mode are formed in the position, close to the end, of the other end of the connector body. The inner side surface of the mounting hole is in a concave arc shape, the diameter of the outer side end of the mounting hole is larger than that of the inner side end of the mounting hole, a friction ring is fixedly mounted at the inner side end of the mounting hole, a steel ball is mounted in the mounting hole, the bottom end of the steel ball extends out of the inner side end of the mounting hole, and the top end of the steel ball is located in the mounting hole. The connector body is fixedly sleeved with the connector outer sleeve. The utility model has the advantages that the steel ball is not easy to damage and the service life is long.

Description

Technical Field

[0001] The utility model belongs to the technical field of quick connectors and relates to a hydraulic quick connector. Background Art

[0002] A quick connector is a connector tool that can quickly connect and disconnect pipelines or gas paths. Quick connectors are widely used in various fields, such as industry, medical treatment, scientific research, etc. They are suitable for different application scenarios and fluid media.

[0003] A Chinese patent with the patent publication number CN209943299U discloses a quick connector, which includes a connecting body and a sleeve sleeved on the connecting body. The connecting body includes a cylindrical connecting head with a plugging hole for plugging with an external component. Two mounting holes for installing steel balls are symmetrically arranged on the side wall of the connecting head. The mounting holes communicate with the plugging hole. A spring step is arranged at the lower end of the connecting head. The inner wall of the sleeve is sequentially provided with a first step surface, a rib, and a second step surface from top to bottom. A spring installation cavity is formed between the rib and the spring step. A spring is sleeved on the outer wall of the connecting head located in the spring installation cavity. The second step surface is located below the spring step. The distance between the first step surface and the top of the sleeve forms a first adjustment hole. The distance between the rib and the first step surface forms a second adjustment hole. The distance between the second step surface and the bottom of the sleeve forms a limiting hole. The diameter of the mounting hole is smaller than the diameter of the steel ball. In the normal state, the arc-shaped outer surface of the steel ball extending into the mounting hole protrudes from the plane where the mounting hole is located, and the arc-shaped surface on the other side of the steel ball abuts against the inner wall of the second adjustment hole.

[0004] In the quick connector provided by this patent, there are components in contact on both sides of the steel ball. After long-term use, the steel ball is prone to damage. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a hydraulic quick connector for the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved by the following technical solutions: A hydraulic quick connector includes a connector body, a one-way valve spool, and a connector outer sleeve. The connector body and the connector outer sleeve are both in the shape of a hollow cylinder. The one-way valve spool is fixedly installed inside the connector body. One end of the connector body is a polygonal flange body. A plurality of circumferentially arranged and through mounting holes are opened near the end of the other end of the connector body. The inner surface of the mounting hole is in the shape of an inward concave arc. The diameter of the outer end of the mounting hole is larger than the diameter of the inner end of the mounting hole. A friction ring is fixedly installed on the inner end of the mounting hole. A steel ball is installed inside the mounting hole. The bottom end of the steel ball extends out of the inner end of the mounting hole and the top end of the steel ball is located inside the mounting hole. The connector outer sleeve is sleeved and fixed on the outside of the connector body.

[0007] In the above-mentioned hydraulic quick connector, a limiting ring body is formed on the connector body, and a spring is sleeved and fixed on the outer side of the connector body on one side of the limiting ring body.

[0008] In the above-mentioned hydraulic quick connector, a slot is formed on the outer side of the connector body, and a sealing ring is fixed in the slot, and the sealing ring is in contact with the inner wall of the connector outer sleeve.

[0009] In the above-mentioned hydraulic quick connector, an anti-disengagement ring is fixedly installed inside the installation hole, and the anti-disengagement ring is in contact with the surface of the steel ball.

[0010] Compared with the prior art, a hydraulic quick connector provided by the present utility model has the following beneficial effects: through the structural settings of the installation hole, the friction ring, the steel ball and the anti-disengagement ring, the inner part of the installation hole is arranged in an arc surface structure that is larger at the top and smaller at the bottom. When the steel ball is placed in the installation hole, the arc surface fits with the surface of the steel ball, and the inner end of the bottom end extending out of the installation hole and the top end of the steel ball do not extend out of the top end of the installation hole, effectively reducing the frictional damage to the steel ball when the installation hole contacts the steel ball, and also avoiding the wear problem caused by the contact between the top end of the steel ball and other components. The friction ring and the anti-disengagement ring play a role in limiting the steel ball. Description of the Drawings

[0011] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0012] Figure 2 is an exploded schematic diagram of the present utility model;

[0013] Figure 3 is a schematic diagram of the structure of the present utility model after removing the connector outer sleeve;

[0014] Figure 4 is a schematic diagram of the connector body structure.

[0015] In the figure: 1, connector body; 11, flange body; 12, installation hole; 13, friction ring; 14, anti-disengagement ring; 15, limiting ring body; 16, slot; 2, one-way valve spool; 3, connector outer sleeve; 4, steel ball; 5, spring; 6, sealing ring. Detailed Description of the Invention

[0016] The following are specific embodiments of the present utility model and in conjunction with the drawings, the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0017] As Figures 1 to 4As shown in the figure, this embodiment includes a joint body 1, a one-way valve spool 2 and a joint outer sleeve 3. Both the joint body 1 and the joint outer sleeve 3 are cylindrical bodies with both ends internally through. The one-way valve spool 2 is fixedly installed inside the joint body 1. One end of the joint body 1 is a polygonal flange body 11, and the flange body 11 is hexagonal. The flange body 11 facilitates clamping of this embodiment with tools such as wrenches. The other end of the joint body 1 is provided with a number of circumferentially arrayed and through mounting holes 12 near the end. The inner surface of the mounting hole 12 is in a concave arc shape. The mounting hole 12 has a structure that is larger at the top and smaller at the bottom, that is, the diameter of the outer end of the mounting hole 12 is larger than the diameter of the inner end of the mounting hole 12. Steel balls 4 are placed inside the mounting hole 12. A friction ring 13 is fixedly installed on the inner end of the mounting hole 12. The bottom end of the steel ball 4 extends out of the inner end of the mounting hole 12 and the top end of the steel ball 4 does not extend out of the outer end of the mounting hole 12. The friction ring 13 contacts the surface of the steel ball 4 extending out of the inner end of the mounting hole 12. A retaining ring 14 is fixedly installed in the middle inside the mounting hole 12. The retaining ring 14 contacts the surface of the steel ball 4. The friction ring 13 and the retaining ring 14 play a limiting role on the steel ball 4.

[0018] For further details, as Figures 1 to 4 shown, the joint outer sleeve 3 is sleeved and fixed on the outside of the joint body 1 near one end of the mounting hole 12. A circumferential and communicating slot 16 is provided on the joint body 1 outside the mounting hole 12. A sealing ring 6 is installed in the slot 16. The sealing ring 6 contacts the inner wall of the joint outer sleeve 3 to play a sealing role.

[0019] For further details, as Figures 1 to 3 shown, a limiting ring body 15 is formed on the joint body 1. A spring 5 is sleeved and fixed on the outside of the joint body 1 on one side of the limiting ring body 15. The limiting ring body 15 plays a limiting role on the spring 5.

[0020] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0021] Although various terms are used more in this article, the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A hydraulic quick connector, comprising a connector body (1), a one-way valve spool (2) and a connector outer sleeve (3). Both the connector body (1) and the connector outer sleeve (3) are in the shape of a hollow cylinder. The one-way valve spool (2) is fixedly installed inside the connector body (1). One end of the connector body (1) is a polygonal flange body (11), and it is characterized in that: On the other end of the joint body (1) near the end, a number of through mounting holes (12) arranged in a circumferential array are provided. The inner surface of the mounting hole (12) is in the shape of an inward concave arc. The diameter of the outer end of the mounting hole (12) is larger than that of the inner end of the mounting hole (12). A friction ring (13) is fixedly installed on the inner end of the mounting hole (12). A steel ball (4) is installed inside the mounting hole (12). The bottom end of the steel ball (4) extends out of the inner end of the mounting hole (12), and the top end of the steel ball (4) is located inside the mounting hole (12). The joint outer sleeve (3) is sleeved and fixed on the outside of the joint body (1).

2. The hydraulic quick connector according to claim 1, wherein: A limiting ring body (15) is formed on the joint body (1). A spring (5) is sleeved and fixed on the outside of the joint body (1) on one side of the limiting ring body (15).

3. The hydraulic quick connector according to claim 1, characterized in that: A slot (16) is provided on the outside of the joint body (1). A sealing ring (6) is fixed in the slot (16). The sealing ring (6) is in contact with the inner wall of the joint outer sleeve (3).

4. A hydraulic quick connector according to claim 1, characterized in that: An anti - detachment ring (14) is fixedly installed inside the mounting hole (12). The anti - detachment ring (14) is in contact with the surface of the steel ball (4).

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