Self-locking hydraulic quick coupling

Abstract

The utility model discloses a self -locking type hydraulic quick coupling relates to hydraulic connector technical field, including the male joint and female joint of butt joint, the inside of male joint is provided with the flow passage, is provided with the outer clamping groove on the outside of male joint, one end of flow passage is provided with the inner clamping groove, one end of female joint is provided with the embedding installation groove, and the outside of embedding installation groove is sleeve. When the utility model male joint and female joint butt joint, male joint one end is inserted in embedding installation groove, and the female joint can be clamped in the outer clamping groove, and the second female joint can be clamped in the inside of inner clamping groove, and the setting of two clamping grooves and the female joint can make the connection stability of male joint and female joint two greatly improve, and two limit sleeve threads are connected on female joint, and the position of two female joints can be positioned through the limit sleeve, further improve the connection stability between male joint and female joint, improve the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic coupling technology, specifically a self-locking hydraulic quick coupling. Background Technology

[0002] Hydraulic systems, an indispensable part of modern industry, are widely used in various mechanical equipment, such as construction machinery, agricultural machinery, and aerospace equipment. In these systems, hydraulic pipe fittings play a crucial role in connecting high-pressure oil pipes to other components. Their importance lies not only in ensuring the normal operation of the system but also in protecting operator safety and improving work efficiency. However, with the continuous expansion of application areas and technological advancements, the requirements for hydraulic pipe fittings are becoming increasingly stringent, especially in terms of material selection, structural strength, and sealing performance.

[0003] Traditional hydraulic pipe fittings are often poorly designed to meet the demands of high-intensity working environments. For example, under conditions of high vibration or extreme temperatures, the connection stability and sealing performance of the fittings may be compromised, leading to leaks or other malfunctions. Furthermore, the need for rapid installation and disassembly is increasing, especially in situations requiring frequent component replacement or maintenance. Achieving a connection that is both fast and reliable has become a challenge.

[0004] To address the aforementioned issues, various types of hydraulic quick couplings have emerged on the market. While these products have solved the problem of quick connection to some extent, they still have some shortcomings in practical use. For example, some designs, although enabling quick connection, lack an effective locking mechanism and are prone to accidental disconnection due to external forces; others may have complex internal structures, leading to high manufacturing costs and inconvenient maintenance. Therefore, designing a hydraulic quick coupling that can ensure efficient and safe quick connection while providing sufficient connection stability and sealing has become a research hotspot in the industry. Thus, this utility model proposes a self-locking hydraulic quick coupling. Utility Model Content

[0005] Technical problems to be solved

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a self-locking hydraulic quick coupling.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a self-locking hydraulic quick coupling, comprising a male connector and a female connector for mating connection:

[0009] The male connector has a flow channel inside, an outer snap-fit ​​groove on the outside of the male connector, and an inner snap-fit ​​groove at one end of the flow channel.

[0010] One end of the female connector is provided with an embedded mounting groove. The outer side of the embedded mounting groove is an outer sleeve, and the inner side is an inner sleeve. A movable docking pin is installed inside the outer sleeve. One end of the docking pin is provided with a locking connector, which can be movably locked inside the outer locking groove. A movable second locking pin is provided inside the inner sleeve. One end of the second locking pin is provided with a movable shaft, and one end of the movable shaft is provided with a movable drive shaft. A second locking connector is provided at one end of the second locking pin. When the male and female connectors are connected, one end of the male connector is inserted into the embedded mounting groove, the locking connector can be locked into the outer locking groove, and the second locking connector can be locked inside the inner locking groove. The connection stability between the male and female connectors is greatly improved by the design of the two locking grooves and locking connectors.

[0011] Preferably, the outer sleeve has two limiting sleeves connected to its external thread. One limiting sleeve is located outside the docking pin, and the other limiting sleeve is located outside the drive shaft. The two limiting sleeves are threaded onto the female connector. The limiting sleeves can limit the position of the two docking pins, further improving the connection stability between the male and female connectors and enhancing the practicality of the device.

[0012] Preferably, a first spring is sleeved on the docking post.

[0013] Preferably, a second spring is sleeved on the second locking post, a third spring is sleeved on the movable shaft, and a fourth spring is sleeved on the drive shaft.

[0014] Preferably, the second snap-fit ​​connector is movably snapped into the interior of the inner snap-fit ​​groove.

[0015] Preferably, a sealing gasket is installed at the bottom of the embedded mounting groove.

[0016] Preferably, the female connector has a second flow channel inside.

[0017] Beneficial effects:

[0018] Compared with existing technologies, this self-locking hydraulic quick coupling has the following advantages:

[0019] When the male and female connectors of this invention are connected, one end of the male connector is inserted into the embedded mounting groove, the snap-fit ​​connector can be snapped into the outer snap-fit ​​groove, and the second snap-fit ​​connector can be snapped into the inner snap-fit ​​groove. The combination of the inner and outer snap-fit ​​grooves and snap-fit ​​connectors greatly improves the connection stability between the male and female connectors. Furthermore, the two limiting sleeves are threaded onto the female connector, and the limiting sleeves can limit the position of the two snap-fit ​​connectors, further improving the connection stability between the male and female connectors and enhancing the practicality of the device. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a partial structural schematic diagram of the present invention;

[0023] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0024] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;

[0025] Figure 5 This is a schematic diagram of the structure of the male connector 1 of this utility model.

[0026] In the picture:

[0027] 1. Male connector; 2. Female connector; 3. Limiting sleeve; 4. First spring; 5. Second spring; 6. Third spring; 7. Fourth spring; 8. Sealing gasket; 101. Flow channel; 102. Outer snap-fit ​​groove; 103. Inner snap-fit ​​groove; 201. Embedded mounting groove; 202. Outer sleeve; 203. Inner sleeve; 204. Connecting pin; 205. Snap-fit ​​connector; 206. Second snap-fit ​​pin; 2061. Second snap-fit ​​connector; 207. Movable shaft; 208. Drive shaft; 209. Flow channel two. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-5 As shown, this utility model provides a technical solution: a self-locking hydraulic quick coupling, including a male connector 1 and a female connector 2 that are connected in a mating manner.

[0030] The male connector 1 has a flow channel 101 inside, an outer snap-fit ​​groove 102 on the outside, and an inner snap-fit ​​groove 103 at one end of the flow channel 101.

[0031] In this utility model, one end of the female connector 2 is provided with an embedded mounting groove 201. The outer side of the embedded mounting groove 201 is an outer sleeve 202, and the inside of the embedded mounting groove 201 is an inner sleeve 203. A movable docking pin 204 is installed inside the outer sleeve 202. One end of the docking pin 204 is provided with a locking connector 205, which is movably locked into the inside of the outer locking groove 102. The inside of the inner sleeve 203 is provided with a movable second locking pin 206. One end of the second locking pin 206 is provided with a movable movable shaft 207, and one end of the movable shaft 207 is provided with a movable... The movable drive shaft 208 has a second snap-fit ​​connector 2061 at one end of the second snap-fit ​​post 206. The second snap-fit ​​connector 2061 can be movably snapped into the inside of the inner snap-fit ​​groove 103. The inside of the female connector 2 is provided with a flow channel 209. When the male connector 1 and the female connector 2 are connected, one end of the male connector 1 is inserted into the embedded mounting groove 201, the snap-fit ​​connector 205 can be snapped into the outer snap-fit ​​groove 102, and the second snap-fit ​​connector 2061 can be snapped into the inside of the inner snap-fit ​​groove 103. The connection stability between the male connector 1 and the female connector 2 can be greatly improved by the setting of the inner and outer snap-fit ​​grooves and snap-fit ​​connectors.

[0032] Please refer to the following carefully. Figure 2 and Figure 3 The outer sleeve 202 has two limiting sleeves 3 connected to its external thread. One limiting sleeve 3 is located outside the docking pin 204, and the other limiting sleeve 3 is located outside the drive shaft 208. The two limiting sleeves 3 are threaded to the female connector 2. The positions of the two connectors can be limited by the limiting sleeves 3, which further improves the connection stability between the male connector 1 and the female connector 2 and improves the practicality of the device.

[0033] Please refer to the following carefully. Figure 2 A first spring 4 is sleeved on the docking post 204, a second spring 5 is sleeved on the second docking post 206, a third spring 6 is sleeved on the movable shaft 207, and a fourth spring 7 is sleeved on the drive shaft 208.

[0034] Please refer to the following carefully. Figure 2 A sealing gasket 8 is installed at the bottom of the embedded mounting groove 201.

[0035] Working principle: When male connector 1 and female connector 2 are connected, one end of male connector 1 is inserted into the embedded mounting groove 201, the snap-fit ​​connector 205 can be snapped into the outer snap-fit ​​groove 102, and the second snap-fit ​​connector 2061 can be snapped into the inside of the inner snap-fit ​​groove 103. The connection stability between male connector 1 and female connector 2 is greatly improved by the setting of the inner and outer snap-fit ​​grooves and snap-fit ​​connectors. In addition, the two limiting sleeves 3 are threadedly connected to female connector 2. The position of the two snap-fit ​​connectors can be limited by the limiting sleeves 3, which further improves the connection stability between male connector 1 and female connector 2.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-locking hydraulic quick coupling, comprising a male connector (1) and a female connector (2) for mating connection, characterized in that: The male connector (1) has a flow channel (101) inside, an outer snap-fit ​​groove (102) on the outside of the male connector (1), and an inner snap-fit ​​groove (103) at one end of the flow channel (101). One end of the female connector (2) is provided with an embedded mounting groove (201). The outside of the embedded mounting groove (201) is an outer sleeve (202), and the inside of the embedded mounting groove (201) is an inner sleeve (203). A movable docking pin (204) is installed inside the outer sleeve (202). One end of the docking pin (204) is provided with a locking connector (205). The locking connector (205) is movably locked inside the outer locking groove (102). The inside of the inner sleeve (203) is provided with a movable second locking pin (206). One end of the second locking pin (206) is provided with a movable movable shaft (207). One end of the movable shaft (207) is provided with a movable drive shaft (208). One end of the second locking pin (206) is provided with a second locking connector (2061).

2. The self-locking hydraulic quick coupling according to claim 1, characterized in that: The outer sleeve (202) has two limiting sleeves (3) connected to its external thread. One of the limiting sleeves (3) is located outside the docking post (204), and the other limiting sleeve (3) is located outside the drive shaft (208).

3. The self-locking hydraulic quick coupling according to claim 1, characterized in that: A first spring (4) is sleeved on the docking post (204).

4. A self-locking hydraulic quick coupling according to claim 1, characterized in that: A second spring (5) is sleeved on the second snap-fit ​​post (206), a third spring (6) is sleeved on the movable shaft (207), and a fourth spring (7) is sleeved on the drive shaft (208).

5. A self-locking hydraulic quick coupling according to claim 1, characterized in that: The second snap-fit ​​connector (2061) is movably snapped into the interior of the inner snap-fit ​​groove (103).

6. A self-locking hydraulic quick coupling according to claim 1, characterized in that: A sealing gasket (8) is installed at the bottom of the embedded mounting groove (201).

7. A self-locking hydraulic quick coupling according to claim 1, characterized in that: The female connector (2) is provided with a flow channel two (209).

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