Plastic push-on connector

Abstract

The application discloses a plastic button quick plug connector, which comprises a socket pipe, a plug pipe and a button, limit ring grooves, mounting grooves and mounting ring grooves are formed on the inner wall of the socket pipe from top to bottom, the mounting grooves are three groups or more and are distributed at equal intervals in the radial direction, a single group of the mounting grooves comprises two symmetrically arranged clamping grooves, a single clamping groove occupies 120 degrees in the circumferential direction, the cross section of the clamping groove is in the shape of a trapezoid, the groove bottom is wide and the groove mouth is narrow, barbs are formed at the groove mouth of the clamping groove, elastic friction blocks are embedded in the clamping groove, and the friction blocks partially extend out of the clamping groove; the limit ring grooves are provided with two or more sealing rings; a plug-in part with a tapered outer wall is formed at the end of the button, a step is formed at the top of the plug-in part, the button is inserted into the plug pipe in the radial direction, the button moves up and down within the range of the limit ring grooves, and a plurality of groups of annular through holes are formed on the plug-in part in the radial direction.

Description

Technical Field

[0001] This application relates to the field of plug-in technology, and in particular to a plastic button quick-connect connector. Background Technology

[0002] Quick-connect couplings are widely used in fluid transport, pneumatic systems, medical devices and other fields due to their advantages such as easy installation and no need for tools, and are especially common in plastic pipe connections.

[0003] Existing quick-connect fittings, such as the one with announcement number CN211976217U, use an elastic retaining ring to provide a rebound force to the air tube inserted into the main body. Automatic locking is achieved through the friction between the elastic retaining ring and the air tube. To unlock, simply press a button to disengage the elastic retaining ring from the air tube. However, the problem is that the elastic retaining ring is embedded in the first groove, and it is easy for it to fall off during long-term or frequent use. In addition, the stability of locking the air tube by the friction provided by a single elastic retaining ring is not good, and the air tube may fall off when moved or subjected to external force. Furthermore, the button lacks foolproof and accidental touch prevention functions.

[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is the closest prior art to this application. Summary of the Invention

[0005] Based on this, this application provides a plastic button quick-connect connector to solve one of the above-mentioned technical problems.

[0006] The technical solution adopted by this application to solve its technical problem is: a plastic button quick-connect connector, comprising: a socket tube, a connector tube, and a button. The socket tube has a limiting ring groove, a mounting groove, and a mounting ring groove respectively formed on its inner wall from top to bottom. There are three or more sets of mounting grooves, radially evenly distributed. Each set of mounting grooves includes two symmetrically arranged slots, each slot occupying 120 degrees circumferentially. The slot cross-section is trapezoidal, with a wide bottom and narrow opening. A barb is formed at the opening of the slot. An elastic friction block is embedded within the slot, with the friction block extending partially out of the slot. There are two or more limiting ring grooves, each with an internal setting... The device includes a sealing ring; a tapered insertion portion is formed on the end of the button, with a step at the top; the button is radially inserted into the insertion tube, and moves up and down within the limiting annular groove; several sets of annular through holes are radially formed on the insertion portion, and the number and distribution of the annular through holes correspond one-to-one with the friction block; after the button is assembled, the friction block passes through the annular through hole and can be inserted into the insertion tube into the socket tube; the insertion tube is fixed by the sealing ring and the friction block; pressing the button can disengage the friction block from the insertion tube, thereby unlocking the insertion tube.

[0007] In some embodiments, a guide groove is formed on the inner wall of the socket tube between the limiting ring groove and the mounting groove, the guide groove including a horizontal section and a vertical section that are interconnected and perpendicular to each other.

[0008] In some embodiments, two positioning protrusions are formed on the outer wall of the plug portion. The positioning protrusions move within the guide groove. When the positioning protrusions are placed in the horizontal section, the friction block is precisely placed within the annular through hole, and the button cannot be pressed at this time. When the positioning protrusions are placed in the vertical section, the button can be pressed downwards.

[0009] In some embodiments, a limiting base is formed at the top of the button, and positioning rings are provided at the bottom of the limiting base and the top of the socket tube. The same spring is provided in the two positioning rings and the spring is disposed between the button and the socket tube. A sleeve extends radially outward from the outer edge of the limiting base and the sleeve completely encloses the spring.

[0010] In some embodiments, a limiting surface is formed axially inside the socket tube, and the limiting surface is located below the mounting annular groove.

[0011] In some embodiments, friction bumps are formed on the top of the friction block, and the friction block is made of rubber.

[0012] In some embodiments, the button is made of POM.

[0013] The beneficial effects of this application are as follows:

[0014] 1) By setting three or more sets of mounting grooves in the socket tube, and setting elastic friction blocks in the mounting grooves, the resilient force and friction force can be provided to the socket tube in a larger radial range. The friction blocks have friction protrusions on the top, which can lock the socket tube more securely. The trapezoidal structure of the slot and the barbs at the port can better embed the friction blocks in the slot, making the friction blocks less likely to fall off.

[0015] 2) The bottom of the button has an annular through hole corresponding to the number and position of the friction blocks. The circumferential angle covered by a single annular through hole is greater than the circumferential coverage of the friction block. The friction blocks are placed in the annular through hole. When unlocking is required, simply press the button to press multiple friction blocks at the same time to unlock the connector. In addition, the positioning protrusion on the button moves in the track of the guide groove. When the positioning protrusion is in the horizontal section, the button cannot be pressed down, which plays a role in preventing fooling and accidental touch.

[0016] 3) A spring is installed between the button and the connector tube, which allows the button to be reset by the spring's restoring force after being pressed down and released in the vertical section, thus reducing the occurrence of button jamming. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a cross-sectional schematic diagram of this application.

[0019] Figure 2 This is a cross-sectional schematic diagram of the socket and button of this application.

[0020] Figure 3 This is a schematic cross-sectional view of the socket tube in this application.

[0021] Figure 4 This is a three-dimensional schematic diagram of the button in this application.

[0022] The reference numerals in the attached diagram are as follows: 1. Socket tube, 2. Insert tube, 3. Button, 301. Insertion part, 302. Limiting base, 303. Sleeve, 4. Limiting ring groove, 5. Mounting groove, 501. Slot, 6. Mounting ring groove, 7. Barb, 8. Friction block, 801. Friction protrusion, 9. Sealing ring, 10. Annular through hole, 11. Guide groove, 1101. Horizontal section, 1102. Vertical section, 12. Positioning protrusion, 13. Positioning ring, 14. Spring, 15. Limiting surface, 16. Step. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection of this application.

[0024] In the embodiments of this application, please refer to Figure 1-4As shown, this plastic button quick-connect connector mainly includes: a socket tube 1, a connector tube 2, and a button 3. The socket tube 1 has a limiting ring groove 4, a mounting groove 5, and a mounting ring groove 6 respectively formed on its inner wall from top to bottom. There are three or more sets of mounting grooves 5, distributed radially at equal intervals. Each set of mounting grooves 5 includes two symmetrically arranged slots 501. Each slot 501 occupies 120 degrees circumferentially. The slot 501 has a trapezoidal cross-section, with a wider bottom and a narrower opening. A barb 7 is formed at the opening of the slot 501. An elastic friction block 8 is embedded within the slot 501, and the friction block 8 partially extends out of the slot 501. There are two or more limiting ring grooves 4, each containing a sealing ring 9. The button... The button 3 has a tapered outer wall forming a plug portion 301 at its end. A step 16 is formed at the top of the plug portion 301. The button 3 is radially inserted into the plug tube 2. The button 3 can move up and down within the range of the limiting annular groove 4. Several sets of annular through holes 10 are radially opened on the plug portion 301. The number and distribution of the annular through holes 10 correspond one-to-one with the friction blocks 8. After the button 3 is assembled, the friction blocks 8 pass through the annular through holes 10 and can be inserted into the plug tube 2 into the socket tube 1. The plug tube 2 is fixed by the sealing ring 9 and the friction blocks 8. Pressing the button 3 can disengage the friction blocks 8 from the plug tube 2, thereby unlocking the plug tube 2.

[0025] The following will continue to describe some preferred / improved embodiments based on the above embodiments. Any one of the following embodiments can be selected, or multiple embodiments can be combined.

[0026] like Figure 3 As shown, a guide groove 11 is formed on the inner wall of the socket tube 1 between the limiting ring groove 4 and the mounting groove 5. The guide groove 11 includes a horizontal section 1101 and a vertical section 1102 that are interconnected and perpendicular to each other. There are two sets of guide grooves 11, which are symmetrically arranged on the inner wall of the socket tube 1.

[0027] Furthermore, two positioning protrusions 12 are formed on the outer wall of the insertion part 301. The positioning protrusions 12 move within the guide groove 11 and can only move within the range of the guide groove 11. When the positioning protrusions 12 are placed in the horizontal section 1101, the friction block 8 is exactly placed in the annular through hole 10, and the button 3 cannot be pressed at this time. When the positioning protrusions 12 are placed in the vertical section 1102, the button 3 can be pressed down. Specifically, the positioning protrusions 12 are hemispherical. When it is necessary to lock the button 3, simply rotate the button 3 so that the positioning protrusions 12 enter the horizontal section 1101, and the button 3 cannot be pressed down, thus playing a positioning and foolproof role. When it is necessary to unlock the insertion tube 2, simply rotate the positioning protrusions 12 to the end of the vertical section 1102, and the button 3 can be pressed to unlock the insertion tube 2.

[0028] like Figure 4 As shown, a limiting base 302 is formed at the top of the button 3. A positioning ring 13 is provided at the bottom of the limiting base 302 and the top of the socket tube 1. The same spring 14 is provided in the two positioning rings 13. The spring 14 is located between the button 3 and the socket tube 1. A sleeve 303 extends radially outward from the limiting base 302. The sleeve 303 completely encloses the spring 14. When the button 3 is pressed, the socket tube 2 is unlocked and the spring 14 is compressed. When the button 3 is released, the spring 14 returns to its original position, which can reset the button 3 and make the positioning protrusion 12 return to the intersection of the horizontal segment 1101 and the vertical segment 1102.

[0029] Specifically, a limiting surface 15 is formed axially inside the socket tube 1. The limiting surface 15 is located below the mounting annular groove 6. The limiting surface 15 is used to limit the insertion depth of the socket tube 2 when it is inserted.

[0030] like Figure 2 As shown, a friction protrusion 801 is formed on the top of the friction block 8. The friction block 8 is made of rubber. When the connector 2 is inserted into the connector 2 and the button 3, the friction block 8 bends downward and the top of the friction block 8 contacts the outer wall of the connector 2. The friction protrusion 801 can increase the friction force of the friction block 8 on the connector 2, resulting in a better locking effect and better locking stability. It should be noted that the friction protrusion 801 will be compressed when it is pressed against the outer wall of the connector 2, so that the top surface of the friction block 8 can also directly contact the outer wall of the connector 2.

[0031] In addition, the button 3 is made of POM (polyoxymethylene), a thermoplastic engineering plastic, which gives the button 3 good wear resistance, temperature resistance and chemical corrosion resistance.

[0032] When using this quick-connect connector, firstly, multiple sets of friction blocks 8 are assembled into each mounting slot 5 using a tool. Then, the button 3 is inserted and assembled into the socket tube 1, so that each friction block 8 is placed into and passes through the annular through hole 10. At this time, the positioning protrusion 12 on the button 3 is exactly located in the horizontal section 1101. Then, the insertion tube 2 is inserted into the socket tube 1. When the socket tube 1 is inserted, the friction block 8 bends downward and its top surface contacts the insertion tube 2. Under the action of the rebound force, it presses against the outer wall of the insertion tube 2 and fixes the insertion tube 2 by friction. When it is necessary to unlock the insertion tube 2, simply turn the button 3 so that the positioning protrusion 12 is placed in the vertical section 1102. Then, press the button 3 to push the side wall of the annular through hole 10 downward, so that the friction block 8 is disengaged from the insertion tube 2, thereby unlocking the insertion tube 2. After releasing the button 3, the button 3 returns to its original position under the action of the spring 14.

[0033] The various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A plastic button quick-connect connector, comprising a socket tube, a connector tube, and a button, characterized in that, The inner wall of the socket tube from top to bottom is provided with a limiting ring groove, an installation groove, and an installation ring groove. There are three or more sets of installation grooves, which are radially evenly distributed. Each set of installation grooves includes two symmetrically arranged slots. Each slot occupies 120 degrees circumferentially. The slot has a trapezoidal cross-section with a wide bottom and a narrow opening. The slot opening has barbs. An elastic friction block is embedded in the slot, and the friction block extends out of the slot. There are two or more limiting ring grooves, and a sealing ring is provided inside them. The button end has a tapered outer wall for insertion, and a step is formed at the top of the insertion. The button is radially inserted into the insertion tube, and the button moves up and down within the limiting annular groove. Several sets of annular through holes are radially opened on the insertion part, and the number and distribution of the annular through holes correspond one-to-one with the friction block. After the button is assembled, the friction block passes through the annular through hole and can be inserted into the insertion tube. The insertion tube is fixed by the sealing ring and the friction block. Pressing the button will disengage the friction block from the insertion tube, thereby unlocking the insertion tube.

2. The plastic button quick-connect connector according to claim 1, characterized in that, A guide groove is formed on the inner wall of the socket tube between the limiting ring groove and the mounting groove. The guide groove includes a horizontal section and a vertical section that are interconnected and perpendicular to each other.

3. A plastic button quick-connect connector according to claim 2, characterized in that, Two positioning protrusions are formed on the outer wall of the plug-in part. The positioning protrusions move in the guide groove. When the positioning protrusions are placed in the horizontal section, the friction block is exactly placed in the annular through hole, and the button cannot be pressed at this time. When the positioning protrusions are placed in the vertical section, the button can be pressed down.

4. A plastic button quick-connect connector according to claim 1, characterized in that, The button has a limiting base at the top, and positioning rings are provided at the bottom of the limiting base and the top of the socket tube. The same spring is provided in the two positioning rings. The spring is located between the button and the socket tube. A sleeve extends radially outward from the limiting base and completely encloses the spring.

5. A plastic button quick-connect connector according to claim 1, characterized in that, A limiting surface is formed axially inside the socket tube, and the limiting surface is located below the mounting annular groove.

6. A plastic button quick-connect connector according to claim 1, characterized in that, The friction block has friction protrusions formed on its top, and the friction block is made of rubber.

7. A plastic button quick-connect connector according to claim 1, characterized in that, The button is made of POM.

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