Quick connector convenient for push-in connection and unlocking

Abstract

The utility model discloses a quick connector convenient for push-in connection and unlocking, which comprises a male head and a female head buckled with the male head, the male head is a hollow pipe, the male head comprises a butt joint 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 female head is provided with a locking groove. 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 and a sealing 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; according to the invention, the self-locking and unlocking structures are simpler, so that the manufacturing is simpler, the cost is reduced, the self assembly of the female head is simpler, and the overall butting process and the unlocking process are easier to operate.

Description

Technical Field

[0001] The utility model relates to the field of pipeline connection, in particular to a quick connector which is convenient for push-in connection and unlocking. 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 self-locking and unlocking structures are complicated, which increases the overall material cost and is difficult to manufacture, and also makes the overall assembly of the quick-connect connector more 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 quick connector that is easy to push in, connect and unlock. Not only is the self-locking and unlocking structure simpler, thereby reducing costs and simplifying the production, but the assembly of the female head itself is also simpler, and the overall docking process and unlocking process are also relatively easy to operate.

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

[0007] A quick connector that is easy to push in, connect and unlock, comprising a male head and a female head snap-connected to 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, and the collar having a groove guide surface with a thickness gradually decreasing from the side away from the female head;

[0008] The female connector comprises a main body and a locking block, wherein the main body comprises a locking portion, a sealing portion and a second external connection portion; the locking portion is provided with a guide groove for fitting the locking block, and the guide groove has an anti-dropping tooth on the side close to the sealing portion for preventing the locking block from escaping from the guide groove; the sealing portion has a cavity for fitting the pipe of the docking portion;

[0009] The bottom of the locking block is provided with a locking notch for engaging the shaft ring; the side of the locking block is provided with an adjustment groove, and the bottom of the adjustment groove away from the notch has an elastic baffle, and the elastic baffle starts to tilt outward from the side of the adjustment groove close to the locking notch; the locking block is provided with an offset notch between the locking notch and the adjustment groove;

[0010] The male head is fixedly connected to an arc-shaped unlocking strip coaxial with the shaft ring at the locking surface, and both sides of the arc-shaped unlocking strip have guiding inclined surfaces for guiding the movement of the locking block when unlocking, and the arc-shaped unlocking strip has an anti-slip surface parallel to the locking surface. When the male head is rotated, one component of the resultant force received by the locking block at the guiding inclined surface is along the radial direction of the male head, and the other component is parallel to the axial direction of the male head.

[0011] The second external connection portion is connected to an external pipeline.

[0012] Preferably, the outer diameter of the arc-shaped unlocking strip is greater than the outer diameter of the shaft collar.

[0013] 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.

[0014] Preferably, a guiding arc surface is provided on a side of the bottom of the locking block away from the locking notch.

[0015] Preferably, the bottom corners of the locking block are transitional rounded corners.

[0016] Preferably, there are two guide grooves, and the two guide grooves are symmetrically arranged with respect to the main body.

[0017] Preferably, the male head is provided with an annular groove at the docking portion, and a sealing ring is installed in the annular groove.

[0018] Preferably, the corners of the butt joint of the male connector are transition chamfers.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] On the whole, the self-locking function is achieved by the cooperation between the groove guide surface and the locking surface of the male connector's collar and the locking block on the female connector. The arc-shaped unlocking strip and the guide slope on the male connector can lift up the locking block when the male head is rotated to achieve unlocking, and the operation is relatively simple. In addition, the structure of the collar, arc-shaped unlocking strip, and locking block for achieving self-locking and unlocking is relatively simple, which is easier to manufacture and reduces the raw material cost of the quick connector. In addition, the self-assembly of the female head, the overall assembly and docking between the male and female heads are also simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an exploded schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a cross-sectional schematic diagram of the overall structure of the utility model after explosion;

[0023] Figure 3 It is a cross-sectional schematic diagram of the overall structure of the utility model;

[0024] Figure 4 This is a structural schematic diagram of the locking block of the utility model;

[0025] Figure 5 It is a schematic diagram of the main structure of the female head of the utility model;

[0026] Figure 6 It is an isometric structural diagram of the male head of the utility model;

[0027] Figure 7 It is a top view schematic diagram of the male plug of the utility model;

[0028] Figure 8 It is a left side schematic diagram of the male plug of the utility model;

[0029] Fig. 9 It is an isometric view of the male connector with the second type of unlocking strip installed;

[0030] Fig.10 is a schematic top view of a male connector with a second type of unlocking strip installed;

[0031] In the figure: 1. male head; 11. docking part; 111. annular groove; 112. transition chamfer; 12. first external connecting part; 13. shaft collar; 131. locking surface; 132. guide surface for entering the groove; 14. arc-shaped unlocking strip; 141. guiding inclined surface; 142. anti-slip surface; 15. second unlocking strip; 151. second inclined 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 connecting part; 22. locking block; 221. locking notch; 222. adjusting groove; 223. elastic baffle; 224. dislocation notch; 225. guiding arc surface; 226. transition fillet; 3. sealing ring; 4. external pipe. DETAILED DESCRIPTION

[0032] 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.

[0033] Please refer to Figure 1 - Figure 5The present embodiment provides a quick connector that is easy to push in, connect and unlock, 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. 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.

[0034] 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; the first external connecting portion 12 can be connected to the external pipe 4, and can also serve as an inlet head or an outlet head, and the second external connecting portion 213 is used to be connected to the external pipe 4.

[0035] 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.

[0036] 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.

[0037] Further, see Figure 6 - Figure 8 An arc-shaped unlocking strip 14 coaxial with the shaft ring 13 is fixedly connected to the locking surface 131 of the male head 1. Both sides of the arc-shaped unlocking strip have guiding inclined surfaces 141 for guiding the movement of the locking block when unlocking. The arc-shaped unlocking strip also has an anti-slip surface 142 parallel to the locking surface. When the male head is rotated, one component of the force applied to the locking block at the guiding inclined surface 141 is along the radial direction of the male head, and the other component is parallel to the axial direction of the male head.

[0038] There are guiding slopes 141 on both sides of the arc-shaped unlocking strip 14 for guiding the movement of the locking block 22 when unlocking. The guiding slopes 141 can be made by chamfering and are not parallel to the axis of the male head 1 .

[0039] When unlocking, by rotating the male head 1, the guide slope 141 of the arc-shaped unlocking strip 14 will first contact the bottom of the locking block 22. As the male head 1 rotates, the locking block 22 is pushed by the arc-shaped unlocking strip 14 at the guide slope 141. It should be noted that when the male head 1 is rotated, the force component of the arc-shaped unlocking strip 14 on the locking block 22 at the guide slope 141 has two directions, namely, along the radial direction of the male head 1 pipe fitting and the axial direction. The radial direction of the force component can drive the locking block 22 to move radially. The male head 10 is moved to the top of the arc-shaped unlocking strip 14, and the axial force drives the male head to move axially, so that the locking block does not reach the top of the arc-shaped unlocking strip after passing the guide slope 141, but fits with the anti-slip surface 142. In this way, only applying a rotational force to the male head cannot make the male head and the female head unstressed. It is also necessary to pull the male head while rotating it, so that the locking block moves directly to the top of the arc-shaped unlocking strip 14 along the guide slope 141, and then pull the male head 1 to make the locking block 22 pass the shaft ring 13 to achieve unlocking. In addition, the material used for the unlocking strip is relatively small, which can save material costs.

[0040] In addition, if Fig. 9 and Fig.10 , a second unlocking strip 15 is arranged on the locking surface 131 of the collar 13, and a second inclined surface 151 is provided at both ends of the second unlocking strip 15 for guiding the movement of the locking block 22, and the second inclined surface 151 is parallel to the axis of the male head 1. Although this style of arc-shaped unlocking strip 14 can also realize the unlocking function, when the male head 1 rotates, the locking block 22 will move directly to the top of the second unlocking strip along the second inclined surface, and the water in the pipe pushes the male head to directly separate from the female head. Although this is more labor-saving, it is easy to cause misoperation problems, that is, when the male head 1 and the female head 2 are rotated at will, the male head 1 and the female head 2 may be disengaged. It is easy to cause the male head 1 and the female head 2 to be disengaged if the male head 1 is rotated by mistake during the later maintenance of other parts, thereby causing water leakage. Therefore, the arc-shaped unlocking strip 14 is designed so that the guiding inclined surfaces 141 on both sides are not parallel to the male head axis, and the arc-shaped unlocking strip 14 also has an anti-slip surface 142 parallel to the locking surface. When the male head is rotated, one component of the force of the guiding inclined surface on the locking block is along the radial direction of the male head, and the other component is parallel to the axial direction of the male head. In this way, the locking block cannot slide directly to the top surface of the arc-shaped unlocking strip 14 by simply applying a rotational force, but will slide to the anti-slip surface 142, so it cannot be unlocked. The rotational force and axial pulling force must be applied to the male head at the same time to slide the locking block smoothly to the top surface of the arc-shaped unlocking strip to unlock, so it is not easy to cause water leakage due to misoperation.

[0041] On the whole, the self-locking function is achieved by the cooperation between the groove guide surface 132 and the locking surface 131 of the male connector's collar 13 and the locking block 22 on the female connector. The locking block 22 can be lifted up by the arc-shaped unlocking strip 14 and the guiding slope 141 on the male connector when the male head 1 is rotated to achieve unlocking, and the operation is relatively simple. In addition, the structure of the collar 13, the arc-shaped unlocking strip 14, and the locking block 22 for achieving self-locking and unlocking is relatively simple, which is easier to manufacture and reduces the raw material cost of the quick connector. In addition, the self-assembly of the female head 2, the overall assembly and docking between the male head 1 and the female head 2 are also simpler.

[0042] Reference Figure 8 As a specific implementation of the embodiment of the present application, the outer diameter of the arc-shaped unlocking strip 14 is greater than the outer diameter of the shaft ring 13.

[0043] In combination with specific usage scenarios, the outer diameter of the arc-shaped unlocking strip 14 is designed to be larger than the outer diameter of the shaft ring 13. In this way, when the locking ring runs along the guide bevel 141 to the highest point of the arc-shaped unlocking strip 14, the locking block 22 can more easily pass over the shaft ring 13 when the male head 1 is pulled out, thereby ensuring smoother unlocking between the male head 1 and the female head 2.

[0044] Reference Figure 2 - 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.

[0045] 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.

[0046] Reference Figure 1 - Figure 4 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 .

[0047] 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.

[0048] Reference Figure 1 , Figure 2 and Figure 6 As a specific implementation of the embodiment of the present application, the bottom corner of the locking block 22 is a transition fillet 226.

[0049] Combined with the specific usage scenario, since the bottom of the lock block 22 is in contact with the outer wall of the male head 1, when unlocking, if the bottom of the lock block 22 is an edge, the male head 1 is rotated, and as the lock block 22 moves on the guide bevel 141 of the arc-shaped unlocking strip 14, the edge of the lock block 22 will scratch the guide bevel 141 of the arc-shaped unlocking strip 14. If it is rotated too much during long-term use, the scratch may deepen and increase the friction between the lock block 22 and the guide bevel 141, thereby making unlocking more laborious. In addition, if the bottom of the lock block 22 is an edge, stress concentration problems will occur, and bumps are prone to occur during production or centralized transportation, and there is also a risk of scratches on the edges during the assembly process of the staff. The bottom of the lock block 22 is rounded, which not only reduces the stress concentration problem, but also makes unlocking smoother, and avoids the problem of the staff being scratched by the edges of the lock block 22 when assembling the female head 2.

[0050] Reference Figure 1 , Figure 2 and Figure 8 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, and further, there are two corresponding locking blocks 22 and arc-shaped unlocking strips 14.

[0051] 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.

[0052] Reference Figure 1 - Figure 3 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 3 is installed in the annular groove 111 .

[0053] 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 3, thereby improving the water sealing effect of the quick connector.

[0054] Reference Figure 2 or Figure 6 or Figure 7 or Figure 8As 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 .

[0055] 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.

[0056] 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 quick connector that is easy to push in, connect and unlock, comprising a male connector (1) and a female connector (2) snap-connected to the male connector (1), wherein the male connector (1) is a hollow tube, characterized in that: The male head (1) comprises a docking portion (11), the docking portion (11) having a collar (13) on its outer periphery, the collar (13) having a locking surface (131) on the side away from the female head (2), and the collar (13) having 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) and a sealing portion (212); 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 male head (1) is fixedly connected to an arc-shaped unlocking strip (14) coaxial with the shaft ring (13) at the locking surface (131), and both sides of the arc-shaped unlocking strip (14) are provided with guiding inclined surfaces (141) for guiding the movement of the locking block (22) when unlocking, and the arc-shaped unlocking strip (14) has an anti-slip surface (142) parallel to the locking surface, and when the male head is rotated, one component of the resultant force received by the locking block (22) at the guiding inclined surface (141) is along the radial direction of the male head (1), and the other component is parallel to the axial direction of the male head (1).

2. A quick connector that is easy to push into and unlock according to claim 1, characterized in that: The outer diameter of the arc-shaped unlocking strip (14) is greater than the outer diameter of the shaft collar (13).

3. A quick connector that is easy to push-in connect and unlock 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).

4. A quick connector that is easy to push-in connect and unlock according to claim 3, 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).

5. A quick connector that is easy to push-in connect and unlock according to claim 4, characterized in that: The bottom corner of the locking block (22) is a transitional rounded corner (226).

6. A quick connector that is easy to push-in connect and unlock 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).

7. A quick connector that is easy to push-in connect and unlock 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 (3) is installed in the annular groove (111).

8. A quick connector that is easy to push-in connect and unlock 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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