An angular quick hydraulic pipe joint
The adjustment sleeve and lever design of the angle-fit quick hydraulic pipe connector solves the problem of dust ingress caused by exposed balls, enabling convenient connection and disconnection operations, and improving the reliability of fixation and ease of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG HENGZHAN MASCH CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-14
AI Technical Summary
Existing quick couplings have ball bearings that are easily exposed during installation, allowing dust to enter, affecting sliding performance, and making operation inconvenient.
The ball bearings are engaged and fixed by rotating the adjusting sleeve. The design of the first and second levers simplifies the operation and prevents dust from entering. The rotation of the adjusting sleeve is controlled by a torsion spring and a limit groove to achieve reliable fixing of the ball bearings.
It effectively protects the ball bearings during connector installation, preventing dust from entering, improving operational convenience and fixing reliability, and simplifying the connection and disconnection process.
Smart Images

Figure CN224497867U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a hydraulic pipe connector, specifically an angle-connected quick hydraulic pipe connector, belonging to the field of hydraulic pipe connector technology. Background Technology
[0002] Hydraulic pipe fittings are components in hydraulic systems that connect high-pressure oil pipes to each other. Hydraulic pipe fittings can be further categorized into hydraulic hoses, high-pressure ball valves, quick couplings, compression fittings, welded fittings, high-pressure hoses, transition fittings, tee fittings, non-standard fittings, flared fittings, right-angle fittings, rotary fittings, stainless steel fittings, and copper fittings.
[0003] Existing quick couplings typically use ball joints for connection and fixation. However, during use, users usually need to slide the outer movable sleeve, which is inconvenient in practice. Furthermore, pushing the movable sleeve may expose the internal balls during coupling installation, allowing external dust to enter and affecting the sliding of the balls. Utility Model Content
[0004] The purpose of this utility model is to provide an angle-type quick hydraulic pipe connector to solve the above problems. By rotating the adjusting sleeve, the ball is pushed to achieve the locking and fixing of the connector, avoiding the exposure of the ball during the installation process. At the same time, the first and second levers set on the side make the rotation of the adjusting sleeve more convenient and labor-saving, and easy to operate.
[0005] This utility model achieves the above-mentioned objective through the following technical solution: a corner-type quick hydraulic pipe connector, including a connector head, the end of which is provided with a connecting structure, the connecting structure including a first connecting pipe, a plurality of balls sliding on the inner side of the first connecting pipe, a positioning groove being provided on the side of the connector head, the balls abutting against the connector head through the positioning groove, an adjusting sleeve being rotatably connected to the outer side of the first connecting pipe, a plurality of protrusions being provided on the inner side of the adjusting sleeve corresponding to the balls, the protrusions abutting against the corresponding balls, a first lever being fixedly connected to the side of the adjusting sleeve, a second lever being fixedly connected to the side of the first connecting pipe, and a bending structure being connected to the end of the first connecting pipe.
[0006] Preferably, a torsion spring is fixedly connected between the plurality of adjusting sleeves and the first connecting tube, and the included angle between the first lever and the second lever is 30°.
[0007] Preferably, a sealing gasket is fixedly connected to the inner side of the first connecting pipe, and the inner side of the sealing gasket abuts against the outer side of the connector.
[0008] Preferably, a limiting groove is formed on the outer side of the first connecting tube, and the inner side of the adjusting sleeve is slidably connected to the first connecting tube through the limiting groove.
[0009] Preferably, a locking rod is slidably connected to the inner side of the first lever, and a spring is fixedly connected between the end of the locking rod and the first lever.
[0010] Preferably, the second lever has a locking groove on its side, and one end of the locking rod has a beveled structure.
[0011] Preferably, a release block is slidably connected to the inner side of the second lever, and the end of the release block is slidably connected to the second lever through a locking groove.
[0012] Preferably, the bending structure includes a connecting hose, with a connecting hose fixedly connected to the end of the first connecting pipe and a second connecting pipe fixedly connected to the end of the connecting hose.
[0013] Preferably, a first rotating block is rotatably connected to the side of the first connecting pipe, and a second rotating block is rotatably connected to the side of the second connecting pipe.
[0014] Preferably, an adjusting screw is rotatably connected to the middle of the second rotating block, and the end of the adjusting screw is threadedly connected to the first rotating block.
[0015] The beneficial effects of this utility model are as follows: the connector and the first connecting tube are fixed by the engagement between the ball and the positioning groove. An adjusting sleeve is provided on the outer side of the first connecting tube. The user can rotate the adjusting sleeve to make the protrusion on the inner side of the adjusting sleeve misalign with the ball, thus releasing the fixing effect on the ball, thereby facilitating the insertion or separation of the connector and the first connecting tube. During this process, since it is achieved by rotating the adjusting sleeve, the ball is always on the inner side of the adjusting sleeve, which can prevent external dust from entering and ensure the normal sliding of the ball. At the same time, a first lever and a second lever are respectively provided on the outer side of the connector and the first connecting tube. The user can rotate the adjusting sleeve by using the first lever until the first lever and the second lever are aligned, thus releasing the ball and improving the convenience of operation. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the connection structure of the second connecting pipe and the connecting hose of this utility model;
[0018] Figure 3 for Figure 2 The diagram shown is an enlarged view of the structure of part A.
[0019] Figure 4 This is a schematic diagram of the connection structure between the first connecting pipe and the adjusting sleeve of this utility model;
[0020] Figure 5 This is a schematic diagram of the connection structure between the first connecting pipe and the first lever block of this utility model;
[0021] Figure 6 This is a schematic diagram of the connection structure between the adjusting sleeve and the protrusion of this utility model.
[0022] In the diagram: 1. Connector; 2. Connecting structure; 201. First connecting pipe; 202. Adjusting sleeve; 203. First lever; 204. Second lever; 205. Ball bearing; 206. Positioning groove; 207. Sealing gasket; 208. Torsion spring; 209. Release block; 210. Engaging groove; 211. Limiting groove; 212. Engaging rod; 213. Spring; 214. Protrusion; 3. Bending structure; 301. Connecting hose; 302. Second connecting pipe; 303. First rotating block; 304. Second rotating block; 305. Adjusting screw. Detailed Implementation
[0023] 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.
[0024] Please see Figures 1-6 As shown, a corner-type quick hydraulic pipe connector includes a connector 1. The end of the connector 1 is provided with a connecting structure 2. The connecting structure 2 includes a first connecting pipe 201. Multiple balls 205 slide on the inner side of the first connecting pipe 201. A positioning groove 206 is provided on the side of the connector 1. The balls 205 abut against the connector 1 through the positioning groove 206. An adjusting sleeve 202 is rotatably connected to the outer side of the first connecting pipe 201. Multiple protrusions 214 are provided on the inner side of the adjusting sleeve 202 corresponding to the balls 205. The protrusions 214 abut against the corresponding balls 205. A first lever 203 is fixedly connected to the side of the adjusting sleeve 202. A second lever 204 is fixedly connected to the side of the first connecting pipe 201. A bending structure 3 is connected to the end of the first connecting pipe 201.
[0025] As a technical optimization of this utility model, a torsion spring 208 is fixedly connected between the plurality of adjusting sleeves 202 and the first connecting tube 201. The included angle between the first lever 203 and the second lever 204 is 30°. By setting the torsion spring 208 between the adjusting sleeve 202 and the first connecting tube 201, the adjusting sleeve 202 can automatically return to the state where the inner protrusion 214 abuts against the ball 205, ensuring the fixed state between the first connecting tube 201 and the connector 1. A sealing gasket 207 is fixedly connected to the inner side of the first connecting tube 201. The inner side of the sealing gasket 207 abuts against the outer side of the connector 1. A limiting groove 211 is formed on the outer side of the first connecting pipe 201. The inner side of the adjusting sleeve 202 is slidably connected to the first connecting pipe 201 through the limiting groove 211. The limiting groove 211 on the outer side of the first connecting pipe 201 can limit the rotation angle of the adjusting sleeve 202, which facilitates the control of the engagement state between the connector 1 and the first connecting pipe 201. A locking rod 212 is slidably connected to the inner side of the first lever 203. The end of the locking rod 212 is connected to the first lever 203. A spring 213 is fixedly connected between 03 and 04. A locking groove 210 is provided on the side of the second lever 204. One end of the locking rod 212 has a beveled structure. A release block 209 is slidably connected to the inner side of the second lever 204. The end of the release block 209 is slidably connected to the second lever 204 through the locking groove 210. To further facilitate the connection between the connector 1 and the first connecting tube 201, when the user rotates the first lever 203 to align with the second lever 204, the locking rod 212 provided on the inner side of the first lever 203 will... The inclined structure at the end engages with the engaging groove 210 on the second lever 204, thereby fixing the current position of the first lever 203 and keeping the current ball bearing 205 free. This means that the user can freely insert and remove the connector 1. After installation, the user can press the release block 209 located on the side of the second lever 204 to push the engaging block out of the engaging groove 210. At this time, the adjusting sleeve 202 can be released, allowing the adjusting sleeve 202 to rotate and reset along the limiting groove 211 under the action of the torsion spring 208, and the connector 1 is fixed again by the ball bearing 205.
[0026] As a technical optimization of this utility model, the bending structure 3 includes a connecting hose 301. The end of the first connecting pipe 201 is fixedly connected to the connecting hose 301, and the end of the connecting hose 301 is fixedly connected to the second connecting pipe 302. A first rotating block 303 is rotatably connected to the side of the first connecting pipe 201, and a second rotating block 304 is rotatably connected to the side of the second connecting pipe 302. An adjusting screw 305 is rotatably connected to the middle of the second rotating block 304. The end of the adjusting screw 305 is threadedly connected to the first rotating block 303. In actual use, to facilitate adjustment of the overall connection direction of the connector... A connecting hose 301 is fixedly connected between the first connector 1 and the second connector 1, allowing the user to freely adjust the direction of the second connector 1. To fix the adjusted direction, the user can rotate the adjusting screw 305 located on the side of the connecting hose 301. One end of the adjusting screw 305 is threadedly connected to the first rotating block 303, and the other end is rotatably connected to the second rotating block 304. When the adjusting screw 305 rotates, it will pull the first connecting pipe 201 toward the second connecting pipe 302, thereby causing the connecting hose 301 to bend, thus changing the connection direction and facilitating the installation of the connector in different usage scenarios.
[0027] In use, the connector 1 and the first connecting tube 201 are firstly fixed by the engagement of the ball bearing 205 and the positioning groove 206. An adjusting sleeve 202 is provided on the outer side of the first connecting tube 201. The user can rotate the adjusting sleeve 202 to displace the protrusion 214 on the inner side of the adjusting sleeve 202 from the ball bearing 205, thus releasing the fixing effect on the ball bearing 205. This facilitates the insertion or separation of the connector 1 and the first connecting tube 201. During this process, because the adjustment is achieved by rotating the adjusting sleeve 202, the ball bearing 205 remains inside the adjusting sleeve 202, preventing external dust from entering and ensuring the normal sliding of the ball bearing 205. Simultaneously, the position of the ball bearing 205 is located between the connector 1 and the first connecting tube 201... A first lever 203 and a second lever 204 are respectively provided on the outer side of the connecting tube 201. The user can rotate the adjusting sleeve 202 by using the first lever 203 until the first lever 203 and the second lever 204 are rotated to the aligned state, at which point the ball 205 is released, improving the convenience of operation. By setting a torsion spring 208 between the adjusting sleeve 202 and the first connecting tube 201, the adjusting sleeve 202 can automatically return to the state where the inner protrusion 214 abuts against the ball 205, ensuring the fixed state between the first connecting tube 201 and the connector 1. The limiting groove 211 on the outer side of the first connecting tube 201 can limit the rotation angle of the adjusting sleeve 202, facilitating the connection between the connector 1 and the first connecting tube 201. The engagement state between connector 1 and the first connecting tube 201 is controlled. To further facilitate the connection between connector 1 and the first connecting tube 201, when the user rotates the first lever 203 to align with the second lever 204, the engaging rod 212 on the inner side of the first lever 203 will engage with the engaging groove 210 on the second lever 204 through the inclined structure at its end. This fixes the current position of the first lever 203 and keeps the ball bearing 205 free, allowing the user to freely insert and remove connector 1. After installation, the user can press the release block 209 located on the side of the second lever 204 to push the engaging block out of the engaging groove 210. At this time, the adjusting sleeve 202 can be released, allowing the adjusting sleeve 202 to move along the limit under the action of the torsion spring 208. The slot 211 rotates and resets, re-fixing the connector 1 via the ball bearing 205. In actual use, to facilitate adjustment of the overall connection direction of the connector, a connecting hose 301 is fixedly connected between the first connector 1 and the second connector 1, allowing the user to freely adjust the direction of the second connector 1. To fix the adjusted direction, the user can rotate the adjusting screw 305 located on the side of the connecting hose 301. One end of the adjusting screw 305 is threadedly connected to the first rotating block 303, and the other end is rotatably connected to the second rotating block 304. When the adjusting screw 305 rotates, it pulls the first connecting tube 201 toward the second connecting tube 302, causing the connecting hose 301 to bend, thereby changing the connection direction.This allows for convenient installation of the connectors in various usage scenarios.
[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A corner-type quick hydraulic pipe fitting, comprising a connector (1), characterized in that: The connector (1) has a connecting structure (2) at its end. The connecting structure (2) includes a first connecting tube (201). Multiple balls (205) slide on the inner side of the first connecting tube (201). A positioning groove (206) is provided on the side of the connector (1). The balls (205) abut against the connector (1) through the positioning groove (206). An adjusting sleeve (202) is rotatably connected to the outer side of the first connecting tube (201). Multiple protrusions (214) are provided on the inner side of the adjusting sleeve (202) corresponding to the balls (205). The protrusions (214) abut against the corresponding balls (205). A first lever (203) is fixedly connected to the side of the adjusting sleeve (202). A second lever (204) is fixedly connected to the side of the first connecting tube (201). A bending structure (3) is connected to the end of the first connecting tube (201).
2. The corner-connection quick hydraulic pipe fitting according to claim 1, characterized in that: A torsion spring (208) is fixedly connected between the plurality of adjustment sleeves (202) and the first connecting tube (201), and the included angle between the first lever (203) and the second lever (204) is 30°.
3. The corner-connection quick hydraulic pipe fitting according to claim 1, characterized in that: A sealing gasket (207) is fixedly connected to the inner side of the first connecting pipe (201), and the inner side of the sealing gasket (207) abuts against the outer side of the connector (1).
4. The corner-connection quick hydraulic pipe fitting according to claim 1, characterized in that: A limiting groove (211) is provided on the outer side of the first connecting pipe (201), and the inner side of the adjusting sleeve (202) is slidably connected to the first connecting pipe (201) through the limiting groove (211).
5. A corner-connected quick hydraulic pipe fitting according to claim 1, characterized in that: A locking rod (212) is slidably connected to the inner side of the first lever (203), and a spring (213) is fixedly connected between the end of the locking rod (212) and the first lever (203).
6. A corner-type quick hydraulic pipe fitting according to claim 5, characterized in that: The second lever (204) has a locking groove (210) on its side, and the end of the locking rod (212) has a beveled structure on one side.
7. A corner-connected quick hydraulic pipe fitting according to claim 6, characterized in that: The second lever (204) has a release block (209) slidably connected to its inner side, and the end of the release block (209) is slidably connected to the second lever (204) through a locking groove (210).
8. A corner-type quick hydraulic pipe fitting according to claim 1, characterized in that: The bending structure (3) includes a connecting hose (301), the end of the first connecting pipe (201) is fixedly connected to the connecting hose (301), and the end of the connecting hose (301) is fixedly connected to the second connecting pipe (302).
9. A corner-connected quick hydraulic pipe fitting according to claim 8, characterized in that: The first connecting pipe (201) is rotatably connected to a first rotating block (303) on its side, and the second connecting pipe (302) is rotatably connected to a second rotating block (304) on its side.
10. A corner-connected quick hydraulic pipe fitting according to claim 9, characterized in that: The second rotating block (304) is rotatably connected to an adjusting screw (305) at its center, and the end of the adjusting screw (305) is threadedly connected to the first rotating block (303).