Self-locking quick connector convenient for push-in connection

Abstract

The utility model discloses a self-locking quick connector convenient for push-in connection, which comprises a male head and a female head connected with the male head in a buckling way, the male head is a hollow pipe, the male head comprises a butt joint part and a first external connection part, the periphery of the butt joint part is provided with a shaft ring, one side of the shaft ring far away from the female head is a locking surface, and the first external connection part is provided with a second external connection part. The shaft ring is provided with a groove entering guide surface of which the thickness is gradually reduced from one side far away from the female head; the female head comprises a main body and a locking block; the main body comprises a locking part, a sealing part and a second external connection part; the locking part is provided with a guide groove matched with the locking block, and the side, close to the sealing part, of the guide groove is provided with anti-disengaging teeth for preventing the locking block from disengaging from the guide groove. The sealing part is provided with a cavity matched with the pipeline of the butt joint part; quick connection and disassembly between pipe fittings can be achieved, only the locking blocks need to be inserted into the guide grooves when the female head is assembled, the overall structure is simple, and installation is quick.

Description

Technical Field

[0001] The utility model relates to the field of pipeline connection, in particular to a self-locking quick connector which is convenient for push-in connection. Background Art

[0002] At present, the hoses in the ceramic body of smart toilets on the market are mainly connected by conventional nuts to the corresponding male connectors. Due to the internal structure limitations, the hose assembly and connection are difficult. Therefore, a quick connection device with simple structure, small installation space, easy disassembly and assembly, and self-locking protection is needed.

[0003] The existing Chinese invention patent with application publication number CN116734065A discloses a self-locking quick connector and its self-locking and unlocking method, including a female head and a male head, the male head can be moved along the axis and inserted into the female head; the male head is provided with an annular groove, an annular step and a receiving groove forming a buckle structure, and the female head includes a main body, a claw and a sleeve; the buckle of the male head and the claw of the female head are engaged to form a self-locking. The sleeve of the female head moves along the axial direction to drive the claw of the female head to move and complete the unlocking; the invention can realize quick connection in a small space, is easy to disassemble and assemble, can automatically lock and has connection protection measures.

[0004] However, the above patent still has the following defects: the overall structure of the female head is relatively complex, and during assembly, the C-ring, sleeve, and block need to be installed on the main body in sequence, and the assembly process is relatively troublesome. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the utility model is to provide a self-locking quick connector that is easy to push into connection, which can not only realize the quick connection and disassembly between pipe fittings, but also the female head only needs to insert the locking block into the guide groove during assembly. The overall structure is simple and the installation is quick.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A self-locking quick connector that is easy to push into connection, comprising a male head and a female head that is snap-connected with the male head, the male head being a hollow tube, the male head comprising a docking portion and a first external connection portion, the docking portion having a collar on its outer periphery, the collar having a locking surface on the side away from the female head, the collar having a groove-entering guide surface whose thickness gradually decreases from the side away from the female head; the female head comprising a main body and a locking block, the main body comprising a locking portion, a sealing portion, and a second external connection portion; the locking portion is provided with a guide groove that fits the locking block, and the guide groove has an anti-slipping tooth that prevents the locking block from escaping from the guide groove on the side close to the sealing portion; the sealing portion has a cavity that fits the docking portion pipeline; the bottom of the locking block is provided with a locking notch for engaging the collar; the side of the locking block is provided with an adjustment groove, the bottom of the side of the adjustment groove that is away from the notch has an elastic baffle, and the elastic baffle tilts outward from the side of the adjustment groove that is close to the locking notch; the locking block is provided with a dislocation notch between the locking notch and the adjustment groove; the second external connection portion is connected to an external pipeline.

[0008] Preferably, the bottom of the locking block is an arc surface, and the radius of the arc surface is the same as the radius of the outer wall of the pipe where the male head is located at the docking portion.

[0009] Preferably, a guiding arc surface is provided on a side of the bottom of the locking block away from the locking notch.

[0010] Preferably, there are two guide grooves, and the two guide grooves are symmetrically arranged with respect to the main body.

[0011] Preferably, it also includes an unlocking piece, which is detachable and includes a connecting plate that slides in a C shape, and two plug plates are symmetrically fixedly connected to the side of the connecting plate, and the thickness of the plug plate gradually increases from the end away from the connecting plate; a sliding groove is opened on the main body, and a sliding block that fits the sliding groove is fixedly connected to the connecting plate. When unlocking, the end of the plug plate with the smallest thickness is inserted along the wall of the guide groove to lift the lock block.

[0012] Preferably, the adjustment groove is provided with an unlocking guide surface away from the locking notch to facilitate the insertion of the plug plate into the adjustment groove.

[0013] Preferably, the corners of the butt joint of the male connector are transition chamfers.

[0014] Preferably, the male head is provided with an annular groove at the docking portion, and a sealing ring is installed in the annular groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] On the whole, when the male and female heads are engaged, after the bottom of the locking block passes over the shaft ring along the groove guide surface, the locking block is quickly moved down and abutted against the outer periphery of the docking portion under the elastic force of the elastic baffle, and the locking surface of the shaft ring and the locking notch of the locking block are used to restrict the male and female heads, ensuring that the male and female heads cannot be separated, thereby completing the connection between the male and female heads; and when the female head is assembled, the locking block is aligned with the guide groove as a whole, and the misaligned notch of the locking block is aligned with the anti-stripping tooth, and then the locking block is inserted into the guide groove. After the elastic baffle is abutted against the anti-stripping tooth, as the locking block is continuously inserted, the elastic baffle will gradually bend and finally completely pass over the anti-stripping tooth, thus completing the assembly of the female head. In short, the embodiment of the present application can not only realize the rapid connection and disassembly between pipe fittings, but also the female head only needs to insert the locking block into the guide groove when assembling, and the overall structure is simple and quick to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the overall structure of the utility model after explosion;

[0019] Figure 3 It is a cross-sectional schematic diagram of the overall structure of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the locking block of the utility model;

[0021] Figure 5 It is a schematic diagram of the main structure of the female head of the utility model.

[0022] In the figure: 1, male head; 11, docking part; 111, annular groove; 112, transition chamfer; 12, first external part; 13, shaft ring; 131, locking surface; 132, groove guide surface; 2, female head; 21, main body; 211, locking part; 2111, guide groove; 2112, anti-slip teeth; 212, sealing part; 2121, cavity; 213, second external part; 22, locking block; 221, locking notch; 222, adjustment groove; 223, elastic baffle; 224, misaligned notch; 225, guide arc surface; 226, unlocking guide surface; 3, unlocking member; 31, connecting plate; 32, plug plate; 33, slider; 4, slide groove; 5, sealing ring; 6, external pipe. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Please refer to Figure 1 - Figure 5 The present embodiment provides a self-locking quick connector that is easy to push into connection, including a male head 1 and a female head 2 that is snap-connected with the male head 1. The male head 1 is a hollow tube. The male head 1 includes a docking portion 11 and a first external portion 12. A collar 13 is provided on the outer periphery of the docking portion 11. The side of the collar 13 away from the female head 2 is a locking surface 131. The collar 13 has a groove entry guide surface 132 whose thickness gradually decreases from the side away from the female head 2; the female head 2 includes a main body 21 and a locking block 22. The main body 21 includes a locking portion 211, a sealing portion 212 and a second external portion 213; a guide groove 2111 that fits the locking block 22 is provided in the locking portion 211, and an anti-slip tooth 2112 that prevents the locking block 22 from escaping from the guide groove 2111 is provided on the side of the guide groove 2111 close to the sealing portion 212. The sealing portion 212 has a cavity 2121 that fits the pipe of the docking portion 11;

[0025] A locking notch 221 for engaging the shaft ring 13 is provided at the bottom of the locking block 22; an adjusting groove 222 is provided on the side of the locking block 22, and an elastic baffle 223 is provided at the bottom of the side of the adjusting groove 222 away from the notch, and the elastic baffle 223 starts to tilt outward from the side of the adjusting groove 222 close to the locking notch 221; an offset notch 224 is provided on the locking block 22 between the locking notch 221 and the adjusting groove 222, and the offset notch 224 is used to prevent the locking block 22 from being obstructed by the anti-slip teeth 2112 when the locking block 22 is inserted into the slide groove 4; the first external connecting portion 12 can be connected to the external pipe 6 or can serve as a water inlet joint or a water outlet joint alone, and the second external connecting portion 213 is connected to the external pipe 6.

[0026] The following is a further introduction in combination with specific usage scenarios. When assembling the female head 2, the locking block 22 is aligned with the guide groove 2111 as a whole, and the misaligned notch 224 of the locking block 22 is aligned with the anti-slipping tooth 2112, and then the locking block 22 is inserted into the guide groove 2111; when the locking block 22 is inserted into the guide groove 2111, the elastic blocking piece 223 will abut against the anti-slipping tooth 2112 and connect. As the locking block 22 is continuously inserted, the elastic blocking piece 223 will gradually bend and eventually completely pass over the anti-slipping tooth 2112. At this time, the outermost end of the elastic blocking piece 223 is located below the anti-slipping tooth 2112. Since the locking block 22 only has a misaligned notch 224 between the locking notch 221 at the bottom and the adjustment groove 222, when the elastic blocking piece 223 passes over the anti-slipping tooth 2112, the locking block 22 cannot continue to be inserted under the constraint of the anti-slipping tooth 2112. In this way, the installation of the female connector 2 is completed. The overall structure of the female connector 2 is simple and easy to assemble.

[0027] Furthermore, when the male head 1 and the female head 2 are connected, the specific process is: align the docking portion 11 of the male head 1 with the cavity 2121 of the female head 2 and insert it; when inserting, the bottom of the locking block 22 will first abut against the outer wall of the pipe at the docking portion 11, and when the male head 1 is inserted into the position of the shaft ring 13, as the male head 1 continues to be inserted, the locking block 22 will move along the groove guide surface 132, so that the locking block 22 is continuously lifted as a whole, and at this time, the elastic blocking piece 223 abuts against the bottom surface of the anti-slip teeth 2112, and when the locking block 22 is continuously lifted, the elastic blocking piece 22 3's elastic deformation gradually increases; when the male head 1 continues to be inserted until the locking block 22 passes over the shaft ring 13, the locking block 22 will move down rapidly under the elastic force of the elastic blocking piece 223, and the locking block 22 will make a "click" sound when it is fastened. At this time, the shaft ring 13 is engaged with the locking notch 221 of the locking block 22. The cooperation between the locking notch 221 and the locking surface 131 makes it impossible for the male head 1 and the female head 2 to be separated. The male head 1 will be firmly stuck by the locking block 22 and cannot be pulled out at will. In this way, the connection between the male head 1 and the female head 2 is completed, and the operation is more convenient.

[0028] On the whole, when the male head 1 and the female head 2 are engaged, after the bottom of the locking block 22 passes over the shaft ring 13 along the groove guide surface 132, the locking block 22 is quickly moved down and abuts against the outer periphery of the docking portion 11 under the elastic force of the elastic blocking sheet 223, and the locking surface 131 of the shaft ring 13 and the locking notch 221 of the locking block 22 are used to restrict the male head 1 and the female head 2, ensuring that the male head 1 and the female head 2 cannot be separated, thereby completing the male head 1 and the female head. 2; and when assembling the female head 2, align the locking block 22 as a whole with the guide groove 2111, and at the same time, make the misaligned notch 224 of the locking block 22 correspond to the anti-slipping tooth 2112, and then insert the locking block 22 into the guide groove 2111. When the elastic blocking piece 223 abuts against the anti-slipping tooth 2112, as the locking block 22 is continuously inserted, the elastic blocking piece 223 will gradually bend and finally completely pass over the anti-slipping tooth 2112, thus completing the assembly of the female head 2. In short, the embodiment of the present application can not only realize the rapid connection and disassembly between pipe fittings, but also when assembling the female head 2, it is only necessary to insert the locking block 22 into the guide groove 2111, and the overall structure is simple and the installation is quick.

[0029] Reference Figure 1 - Figure 4 As a specific implementation of the embodiment of the present application, the bottom of the locking block 22 is an arc surface, and the radius of the arc surface is the same as the radius of the outer wall of the pipe of the male head 1 located at the docking portion 11.

[0030] In combination with specific usage scenarios, the bottom of the locking block 22 is set to a circular arc surface, and the radius of the circular arc surface is the same as the outer wall radius of the pipe of the docking part 11. In this way, when the male head 1 and the female head 2 are engaged and connected, the contact area between the bottom surface of the locking block 22 and the docking part 11 of the male head 1 can be increased, and the contact area between the locking surface 131 and the locking notch 221 of the locking block 22 is also increased, thereby further improving the connection stability between the male head 1 and the female head 2.

[0031] Reference Figure 1 and Figure 2 As a specific implementation of the embodiment of the present application, a guide arc surface 225 is provided on the bottom of the locking block 22 away from the locking notch 221 .

[0032] In combination with a specific usage scenario, when the male connector 1 is docked with the female connector 2, if a guide arc surface 225 is provided on the side of the bottom of the locking block 22 away from the locking notch 221, the locking block 22 may be touched when the male connector 1 is inserted, causing the docking portion 11 of the male connector 1 to be unable to be quickly aligned with the cavity 2121; and the provision of the guide arc surface 225 can facilitate the insertion of the male connector 1, so that the male connector 1 can enter the female connector 2 along the guide arc surface 225 and be inserted into the cavity 2121, thereby improving the installation convenience between the male connector 1 and the female connector 2.

[0033] Reference Figure 1 and Figure 2 As a specific implementation of the embodiment of the present application, there are two guide grooves 2111, and the two guide grooves 2111 are symmetrically arranged about the main body 21.

[0034] In combination with specific usage scenarios, by adopting two guide grooves 2111 and symmetrically arranging the two guide grooves 2111 about the main body 21, not only can the abutment surface area between the locking surface 131 and the locking notch 221 of the locking block 22 be increased, but also the locking position distribution of the male head 1 is balanced, thereby further improving the stability of the connection between the male head 1 and the female head 2.

[0035] Reference Figure 1 - Figure 3 As a specific implementation of the embodiment of the present application, it also includes a detachable unlocking member 3, which includes a connecting plate 31 that slides in a C shape, and two plug plates 32 are symmetrically fixedly connected to the side of the connecting plate 31, and the thickness of the plug plates 32 gradually increases from the end away from the connecting plate 31; a sliding groove 4 is opened on the main body 21, and a sliding block 33 that fits the sliding groove 4 is fixedly connected to the connecting plate 31. When unlocking, the end of the plug plate 32 with the smallest thickness is inserted along the wall of the guide groove 2111 to lift the lock block 22.

[0036] In combination with the specific usage scenario, when the quick-connect connector needs to be opened, the slider 33 of the separate unlocking piece 3 is first installed corresponding to the slide groove 4 of the main body 21, so that the separate unlocking piece 3 and the main body 21 can slide relative to each other, and then the connecting plate 31 is pushed, and then the plug plate 32 is inserted along the groove wall of the guide groove 2111. Since the wiper plate is a component with an increased thickness from one end to the other, the height of the lock block 22 being lifted up will gradually increase as the plug plate 32 is inserted. When the height of the lock block 22 being lifted up is greater than the thickness of the shaft ring 13, the lock block 22 loses its axial constraint on the male head 1, so that the male head 1 can be separated from the female head 2, and the unlocking operation of the quick-connect connector is relatively simple.

[0037] In addition, setting the unlocking member 3 to be detachable can effectively prevent the hose from coming out due to misoperation, thereby causing water leakage.

[0038] Reference Figure 1 - Figure 3 As a specific implementation of the embodiment of the present application, an unlocking guide surface 226 is provided at the adjusting groove 222 away from the locking notch 221 to facilitate the insertion of the plug plate 32 into the adjusting groove 222 .

[0039] In combination with specific usage scenarios, by setting an unlocking guide surface 226, when the plug plate 32 is inserted, it can enter the adjustment groove 222 along the unlocking guide surface 226, and then lift the locking block 22, thereby improving the alignment effect between the unlocking member 3 and the adjustment groove 222 of the locking block 22, and improving the unlocking efficiency.

[0040] Reference Figure 2 and Figure 3 As a specific implementation of the embodiment of the present application, the corner of the docking portion 11 of the male plug 1 is a transition chamfer 112 .

[0041] In combination with specific usage scenarios, by adopting a transition chamfer 112 on the docking portion 11 of the male head 1, not only can the sharp edges be reduced and removed, making the pipe installation process safer, but the transition chamfer 112 can also provide guidance, facilitating the alignment and guidance between the docking portion 11 of the male head 1 and the cavity 2121 of the female head 2, thereby improving the assembly convenience between the male head 1 and the female head 2.

[0042] Reference Figure 1 and Figure 2 As a specific implementation of the embodiment of the present application, an annular groove 111 is provided at the docking portion 11 of the male head 1 , and a sealing ring 5 is installed in the annular groove 111 .

[0043] In combination with specific usage scenarios, the sealing between the male head 1 and the female head 2 is further improved by installing the sealing ring 5, thereby improving the water sealing effect of the quick connector.

[0044] Preferably, the male connector 1 should be processed using an integrated molding technology, that is, the annular groove 111 and the collar 13 on the male connector 1 should be machined through the hollow tube body, which can ensure the integrity and waterproofness of the male connector 1.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A self-locking quick connector that is easy to push into connection, comprising a male head (1) and a female head (2) snap-connected to the male head (1), wherein the male head (1) is a hollow tube, characterized in that: The male head (1) comprises a docking portion (11) and a first external connection portion (12); the docking portion (11) has a collar (13) on its outer periphery; the collar (13) has a locking surface (131) on the side away from the female head (2); and the collar (13) has a groove entry guide surface (132) whose thickness gradually decreases from the side away from the female head (2); The female head (2) comprises a main body (21) and a locking block (22); the main body (21) comprises a locking portion (211), a sealing portion (212) and a second external connection portion (213); the locking portion (211) is provided with a guide groove (2111) for engaging with the locking block (22); the guide groove (2111) has an anti-slip tooth (2112) on a side close to the sealing portion (212) for preventing the locking block (22) from escaping from the guide groove (2111); the sealing portion (212) has a cavity (2121) for engaging with a pipe of the docking portion (11); The bottom of the locking block (22) is provided with a locking notch (221) for engaging the shaft ring (13); the side of the locking block (22) is provided with an adjustment groove (222); the bottom of the adjustment groove (222) away from the notch has an elastic blocking piece (223), and the elastic blocking piece (223) is inclined outward from the side of the adjustment groove (222) close to the locking notch (221); the locking block (22) is provided with an offset notch (224) between the locking notch (221) and the adjustment groove (222); The first external connection portion (12) and the second external connection portion (213) are both connected to an external pipeline (6).

2. A self-locking quick connector for easy push-in connection according to claim 1, characterized in that: The bottom of the locking block (22) is an arc surface, and the radius of the arc surface is the same as the radius of the outer wall of the pipe of the male head (1) at the docking portion (11).

3. A self-locking quick connector for easy push-in connection according to claim 2, characterized in that: A guide arc surface (225) is provided on a side of the bottom of the locking block (22) away from the locking notch (221).

4. A self-locking quick connector for easy push-in connection according to claim 1, characterized in that: There are two guide grooves (2111), and the two guide grooves (2111) are symmetrically arranged with respect to the main body (21).

5. A self-locking quick connector for easy push-in connection according to claim 4, characterized in that: The unlocking member (3) is detachable and comprises a connecting plate (31) that is slidable in a C-shape. Two plug plates (32) are symmetrically fixedly connected to the side of the connecting plate (31). The thickness of the plug plates (32) gradually increases from the end away from the connecting plate (31). A sliding groove (4) is provided on the main body (21). A sliding block (33) that fits the sliding groove (4) is fixedly connected to the connecting plate (31). When unlocking, the end of the plug plate (32) with the smallest thickness is inserted along the groove wall of the guide groove (2111) to lift the locking block (22).

6. A self-locking quick connector for easy push-in connection according to claim 5, characterized in that: The adjusting groove (222) is provided with an unlocking guide surface (226) away from the locking notch (221) for facilitating the insertion of the plug plate (32) into the adjusting groove (222).

7. A self-locking quick connector for easy push-in connection according to claim 1, characterized in that: The male head (1) is provided with an annular groove (111) at the butting portion (11), and a sealing ring (5) is installed in the annular groove (111).

8. A self-locking quick connector for easy push-in connection according to claim 1, characterized in that: The corners of the butt joint portion (11) of the male connector (1) are transition chamfers (112).

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