CN106090491B - Detachable quick connector - Google Patents

Abstract

A detachable quick-plug connector includes a male connector and a female connector, wherein the male connector is connected to the female connector via the snap-on component; the snap-on component is arc-shaped, and includes an arc-shaped body, a snap-on head, a fan-shaped lower protrusion, and an arc-shaped slide rail; the snap-on head is provided at one end of the arc-shaped body, the fan-shaped lower protrusion is provided in the middle of the lower concave surface of the arc-shaped body, the arc-shaped slide rails are provided at the front and rear sides of the arc-shaped body, the arc-shaped slide rails cooperate with and abut against the arc-shaped slide rails, the snap-on head is snapped into the snap-on groove, and the fan-shaped lower protrusion abuts against the snap-on portion of the male connector; the snap-on component is provided with two first snap-on components and a second snap-on components, the first snap-on components and the second snap-on components are centrally symmetrically arranged and snap-on respectively in the card interfaces on the upper and lower sides of the opening structure. The present invention provides a detachable quick-plug connector that is not easy to fall off, has a simple structure, and is easy to use.

Description

A detachable quick-plug connector

technical field

The invention belongs to the technical field of pipeline connection, and in particular relates to a detachable quick-plug joint.

Background technique

A pipeline is a device used to transport fluids such as gas and liquid. Usually, the pipeline is connected by pipes, pipe connectors, valves, etc.; To complete, the existing connection methods of joints include threaded connection, welding and pressing, etc. In the actual operation and installation, there are some problems, such as joint manufacturing, inconvenient installation, difficult loading and unloading, and slow installation speed. One problem, quick connectors came into being.

In the existing joints, most of them use sound to confirm that the male joint is firmly locked in the female joint. In this way, in the noisy assembly environment, the click sound cannot be heard, and the workers will inevitably be fatigued after working for a long time. Negligence, so that the male connector is not firmly clamped to the female connector, resulting in accidents. Most of the existing detachable joints have many parts and many assembly processes, which will inevitably lead to reverse assembly sequence, delay assembly time, and bring certain troubles to production.

Contents of the invention

In order to overcome the deficiency of the existing quick connector technology that the male connector is not inserted in place, the present invention provides a detachable quick connector that is not easy to fall off, has a simple structure and is easy to use.

The technical solution adopted by the present invention to solve its technical problems is:

A detachable push-in joint, including a male joint and a female joint, the quick-insert joint also includes a buckle, and the male joint is connected to the female joint through the buckle;

The male joint is a hollow structure, and the male joint includes a male connecting pipe, a first hose connecting part, a first annular protrusion and a second annular protrusion, and the front end of the male connecting pipe is provided with the first flexible pipe. The pipe connection part, the second annular protrusion is arranged at the middle front part of the male connecting pipe, the first annular protrusion is located at the rear side of the second annular protrusion, and the first annular protrusion is connected to the second There is a clamping part between the annular protrusions; the outer diameter of the second annular protrusion is larger than the outer diameter of the first annular protrusion;

The female joint is a hollow structure, and the female joint includes an opening structure, a female connecting pipe and a second hose connection part, the front end of the female connecting pipe is provided with the opening structure, and the rear end of the female connecting pipe is provided with a There is a second hose connection part, the opening structure is provided with a through pipe insertion port along the front and rear axial directions, the upper and lower sides of the opening structure are respectively provided with card interfaces, and the two card interfaces are symmetrically arranged in the center, and the card interface It communicates with the tube insertion port; the card interface is arc-shaped, and the left and right sides of the card interface are provided with buckle grooves, and the front and rear sides of the card interface are respectively provided with arc-shaped slideways;

The buckle is arc-shaped, and the buckle includes an arc-shaped body, an engaging head, a fan-shaped lower protrusion and an arc-shaped slide rail. One end of the arc-shaped body is provided with the engaging head, The fan-shaped lower protrusion is provided in the middle of the lower concave surface of the arc-shaped body, and the arc-shaped slide rails are provided on the front and rear sides of the arc-shaped body, and the arc-shaped slide rails and the arc-shaped slideways Matching and conflicting, the engaging head is clamped in the buckling groove, and the fan-shaped lower protrusion is in contact with the clamping part of the male joint; the buckle is provided with two first A buckle and a second buckle, the first buckle and the second buckle are arranged symmetrically to the center and respectively snapped into the snap-in ports on the upper and lower sides of the opening structure;

The second annular protrusion of the male connector is located on the front side of the opening structure and fits on the opening structure, and the front side of the first annular protrusion fits on the rear side of the fan-shaped lower protrusion.

Further, the buckle also includes an arched protrusion and a tail, the arc-shaped slide rail is provided with the tail fin at an end away from the engaging head, and the arc-shaped slide rail is provided with the an arched protrusion integrally formed with the empennage;

The card interface is respectively provided with a cover piece on the front and back side walls of the opposite side of the buckle groove, and the cover piece is provided with a gap for the passage of the empennage, and the two cover pieces are symmetrically arranged.

Still further, the engaging head includes a first inclined plane, a first rounded corner, a second inclined plane, a third inclined plane and a second rounded corner, and the lower end of the first inclined plane of the engaging head passes through the first rounded corner and the second rounded corner. The lower end of the second inclined plane is connected, the upper end of the second inclined plane is connected with the upper end of the third inclined plane through the second rounded corner, and the first inclined plane, the first rounded corner, the second inclined plane and the second rounded corner form a V-shaped groove ;

The buckle groove includes a first slope, a second slope, a transition fillet and a third slope. The lower end of the first slope of the buckle groove is connected to the lower end of the second slope through a transition fillet. The upper end of the second slope is connected to the upper end of the third slope, the first slope, the transition fillet and the second slope form a V-shaped protrusion, and the second slope and the third slope form an inverted V-shaped groove;

The first slope of the buckle groove fits with the first slope of the buckle head, and the transition round corner of the buckle groove fits with the first round corner of the buckle head, so The second slope and the third slope of the buckle groove are attached to the second slope and the third slope of the engaging head respectively.

Still further, the arc-shaped body is provided with a rectangular protrusion on the top surface of the end close to the engaging head.

Still further, the female connecting pipe is also provided with a safety ring, an inner retaining ring, an outer sealing ring and an inner sealing ring, and the rear end of the male connecting pipe passes through the safety ring, the outer sealing ring, and the inner retaining ring in turn from front to back and an inner sealing ring, the front side of the safety ring is attached to the rear side of the first annular protrusion.

Furthermore, both the first hose connection part and the second hose connection part are provided with annular anti-slip protrusions.

The main beneficial effects of the invention are: the male joint and the female joint are not easy to fall off, the structure is simple, and the use is convenient.

Description of drawings

Figure 1 is an exploded view of the present invention.

Fig. 2 is a structural schematic diagram of a female joint.

FIG. 3 is a cross-sectional view of the card interface of FIG. 2 .

Fig. 4 is a schematic structural diagram of the buckle.

Fig. 5 is a longitudinal sectional view when the male joint is connected to the female joint.

FIG. 6 is a cross-sectional view of FIG. 5 at the clamping portion.

Fig. 7 is a schematic diagram of the internal structure of the present invention.

Fig. 8 is a slanted inward view of the empennage when the buckle is taken out.

Fig. 9 is a schematic diagram of taking out the buckle vertically upwards.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Referring to Figures 1 to 9, a detachable push-in connector includes a male connector 3 and a female connector 1, the quick-connect connector also includes a buckle 2, and the male connector 3 is connected by the buckle 2 on said female connector 1;

The male connector 3 is a hollow structure, and the male connector 3 includes a male connecting pipe 31, a first hose connecting portion 35, a first annular protrusion 32 and a second annular protrusion 34, and the front end of the male connecting pipe 31 The first hose connection part 35 is provided, the second annular protrusion 34 is arranged at the middle front part of the male connecting pipe 31, and the first annular protrusion 32 is located behind the second annular protrusion 34 On the side, between the first annular protrusion 32 and the second annular protrusion 34 is an engaging portion 33; the outer diameter of the second annular protrusion 34 is larger than the outer diameter of the first annular protrusion 32;

The female joint 1 is a hollow structure. The female joint 1 includes an opening structure, a female connecting pipe 13 and a second hose connecting part 14. The front end of the female connecting pipe 13 is provided with the opening structure, and the female connecting pipe 13 is provided with the opening structure. The rear end of the pipe 13 is provided with a second hose connection portion 14, the opening structure is provided with a through pipe insertion port 11 along the front and rear axial directions, and the upper and lower sides of the opening structure are respectively provided with a card interface 12, two card ports The center of the interface is symmetrically arranged, and the card interface 12 communicates with the tube insertion port 11; Arc-shaped slideways 122 are arranged on the front and rear sides respectively;

The buckle 2 is arc-shaped, and the buckle 2 includes an arc-shaped body, an engaging head 21, a fan-shaped lower protrusion 23 and an arc-shaped slide rail 22, and one end of the arc-shaped body is provided with the Engage the head, the fan-shaped lower protrusion 23 is provided in the middle of the lower concave surface of the arc-shaped body, and the arc-shaped slide rails 22 are provided on the front and rear sides of the arc-shaped body, and the arc-shaped slide rails 22 cooperates with and interferes with the arc-shaped slideway 122, the engaging head 21 engages in the engaging groove 121, and the fan-shaped lower protrusion 23 interferes with the engaging portion 33 of the male connector 3 The buckle 2 is provided with two respectively a first buckle and a second buckle, and the first buckle and the second buckle are arranged symmetrically to the center and respectively snapped into the opening structure In the card interface on the upper and lower sides of the

The second annular protrusion 34 of the male connector 3 is located on the front side of the opening structure and fits with the opening structure, and the front side of the first annular protrusion 32 is in contact with the rear side of the fan-shaped lower protrusion 23 . combine.

Further, the buckle 2 also includes an arched protrusion 24 and a tail 25, the arc slide rail 22 is provided with the tail fin 25 at the end away from the engaging head 21, and the arc slide rail 22 The arched protrusion 24 is provided on the upper convex surface, and the arched protrusion 24 is integrally formed with the empennage 25;

The card interface 12 is respectively provided with a cover piece 123 on the front and rear side walls of the opposite side of the buckle groove 121, and the cover piece 123 is provided with a gap 124 for the passage of the tail fin 25, two The cover sheets are arranged symmetrically.

Still further, the engaging head 21 includes a first inclined surface 211, a first rounded corner 212, a second inclined surface 213, a third inclined surface 215 and a second rounded corner 214. The first inclined surface 211 of the engaging head 21 The lower end of the second slope 213 is connected to the lower end of the second slope 213 through the first fillet 212, and the upper end of the second slope 213 is connected to the upper end of the third slope 215 through the second fillet 214. The first slope 211, the first circle The corner 212, the second bevel 213, and the second rounded corner 214 form a V-shaped groove;

The buckle groove 121 includes a first slope 1211, a second slope 1213, a transition fillet 1212 and a third slope 1214, and the lower end of the first slope 1211 of the buckle groove 121 passes through the transition fillet 1212 and the second slope. The lower end of the slope 1213 is connected, the upper end of the second slope 1213 is connected with the upper end of the third slope 1214, the first slope 1211, the transition fillet 1212 and the second slope 1213 form a V-shaped protrusion, and the second The slope 1213 and the third slope 1214 form an inverted V-shaped groove;

The first slope 1211 of the buckle groove 121 is in contact with the first slope 211 of the engaging head 21 , and the transition fillet 1212 of the buckle groove 121 is in contact with the first slope 211 of the engaging head 21 . A rounded corner 212 fits, and the second slope 1213 and the third slope 1214 of the locking groove 121 respectively fit with the second slope 213 and the third slope 215 of the engaging head 21 .

Still further, the arc-shaped body is provided with a rectangular protrusion 26 on the top surface near the end of the engaging head 21 .

Furthermore, the female connecting pipe 13 is also provided with a safety ring 133, an inner retaining ring 132, an outer sealing ring and an inner sealing ring, and the rear end of the male connecting pipe 31 passes through the safety ring 133, the outer sealing ring, and the The sealing ring, the inner retaining ring 132 and the inner sealing ring, the front side of the safety ring 133 is attached to the rear side of the first annular protrusion 32 .

Furthermore, both the first hose connection part 35 and the second hose connection part 15 are provided with annular anti-slip protrusions.

As shown in Figure 2, Figure 3 and Figure 4, the opening structure has a pipe insertion port 11 for inserting the male joint 3; the female joint has two center-symmetrically arranged card interfaces 12 for placing the buckle 2; The interface 12 is arranged with a buckle groove 121, the buckle groove 121 is used to fix the buckle head 21 of the buckle part 2, and the first slope 211 of the buckle groove 121 is used to match the buckle head of the buckle part 2 The part 21 slides into the buckle groove 121, the angle between the first slope 211 of the buckle groove 121 and the vertical direction, that is, the vertical line, is 15°, and the transition fillet 1212 is convenient for matching the buckle The rounded part of the piece 2 slides in, the radius of the transition fillet 1212 is 0.2 mm, the second slope 1213 of the buckle groove 121 is used to clamp the engaging head 21 of the buckle part 2, and the buckle concave The angle between the second slope 1213 of the groove 121 and the vertical direction, that is, the vertical line, is 45°, and the third slope 1214 of the buckle groove 121 is used to fix the engaging head 21 of the corresponding buckle 2, and the buckle groove The angle between the third slope 1214 of 121 and the vertical direction, that is, the vertical line, is 30°; the arc-shaped slideway 122 is used for sliding the arc-shaped slide rail 22 of the buckle 2 to perform clamping and unlocking actions; There are two symmetrically arranged covers 123 at the tail of the arc-shaped slideway 122, which are used to wrap the tail 25 of the buckle 2 tightly, and a gap 124 is provided at the head of the cover 123 to facilitate the locking When the tail fin 25 of the fastener 2 is disassembled, it is disengaged from the card interface 12 .

As shown in Figures 1 and 5, an O-ring 131, an inner retaining ring 132, and a safety ring 133 are arranged on the inner wall of the female connecting pipe 13 on the female joint 1. There are two O-rings, respectively The inner and outer sealing rings act as a two-way seal, the inner sealing ring prevents liquid from flowing out, and the outer sealing ring prevents external pollutants from entering; an inner retaining ring 132 is arranged between the inner sealing ring and the outer sealing ring. The ring 132 acts as an isolation to prevent the sealing rings from sticking to each other due to temperature rise; the safety ring 133 plays two functions, one is to fix the sealing ring to prevent the sealing ring from moving, and the other is to lock the buckle 2 to the male connector 3 The first annular protrusion 32 of the first ring-shaped protrusion 32 plays a clamping role, and plays an axial fixing role on the male joint part connected into the female joint 1 and prevents the axial movement of the male joint 3; the tail of the female joint 1 is The second hose connection part 14 bites into the inner wall of the corresponding hose through the annular anti-slip protrusion on it, so as to realize the connection.

As shown in FIG. 4 , the engaging head 21 includes a first inclined surface 211 , a first rounded corner 212 , a second inclined surface 213 , a second rounded corner 214 , and a third inclined surface 215 . An inclined surface 211 is used to match the first inclined surface 1211 of the buckle groove 121 and withstand it, and the included angle with the vertical direction, that is, the vertical line, is 15°; the first rounded corner 212 of the engaging head 21 is used for To match and support the transition fillet 1212 of the buckle groove 121 , the fillet radius is 0.2mm; Two slopes 1213, the slope of which is 45°; the second rounded corner 214 of the engaging head 21 is used to facilitate the sliding of the engaging head 21 into the buckle groove 121, and the radius of the fillet is 0.2 mm; The third inclined surface 215 of the engaging head 21 is used to cooperate with the third inclined surface 215 of the buckle part 21, and its slope is 30°; The buckle groove 121 plays a circumferential and axial fixing role for the buckle 2 like this; the arc-shaped slide rail 22 is convenient to slide on the arc-shaped slideway 122; the fan-shaped lower protrusion 23 is used The first annular protrusion 32 for cooperating with the safety clamping of the male joint 3 is placed on the front side of the first annular protrusion 32; the arched protrusion 24 is used for the buckle 2 to disengage from the card interface 12, and along with the inward retraction of its own tail, the oblique retraction of the empennage 25 is driven, so that the buckle 2 is separated from the card interface 12 smoothly; Shrinks inward and has elasticity to return to its original shape.

As shown in Fig. 5 and Fig. 6, the engaging part 33 on the male connector is convenient for the fitting of the fan-shaped lower protrusion 23 of the buckle 2, so as to clamp the first annular protrusion 32 with the safety ring 133. tight, and finally realize the connection between the male connector 3 and the female connector 1 of the push-in connector; the second annular protrusion 34 is used to fit the outer wall of the female connector 1 and play a positioning role; the first hose The connecting part bites into the inner wall of the corresponding hose through the annular anti-slip protrusion on it, so as to realize the connection. When the second annular protrusion 34 of the male connector 3 touches the front end of the female connector 1, the rear end of the corresponding first annular protrusion 32 is attached to the front end of the safety ring 133, so that the assembler Seeing that the male joint 3 has been inserted into the assembly position, put the buckle 2 into the card interface 12, and the rear end surface of the fan-shaped lower protrusion 23 of the buckle 2 is attached to the male joint 3, the front end face of the first annular protrusion 32, so that the male joint 3 is inserted into the female joint and clamped firmly inside the female joint to realize the connection. The first annular protrusion 32 of the male joint Clamped back and forth by the fan-shaped lower protrusion 23 of the buckle 2 and the safety ring 133, the part of the male connector inserted into the female connector is axially fixed to prevent axial movement thereof.

As shown in FIG. 7, FIG. 8 and FIG. 9, the thickness of the buckle 2 is different from that of the fan-shaped lower protrusion 23, and the part of the thickness difference is used for the buckle 2 on the arc-shaped slideway 122. The arc-shaped sliding rail 22 that slides upward is similar to a simply supported beam in material mechanics, and the deflection of the beam is concaved by applying a concentrated force. The fastener plays a supporting role, similar to the support seats at both ends of a simply supported beam. In this way, the rectangular protrusion of the fastener 2 is pressed by the thumb to make it concave in the middle of the elastic range, so that the fastener The engaging head 21 of the fastener 2 moves down, disengages from the buckle groove 121 on the female joint, and uses friction to make the fastener 2 retreat along the arc-shaped slideway 122, so that the The engaging head 21 of the buckle 2 exits the buckling groove 121 . Apply mutual inward force to the tail of the arched protrusion 24 of the buckle 2 by two fingers, so that the tail of the arched protrusion 24 can be shrunk inwardly, and at the same time, the tail 25 can be driven inward. Shrinking obliquely, so that the tail 25 moves out from under the cover 123 , and then exerts force upwards smoothly, so that the buckle 2 is separated from the female connector 1 of the quick-plug connector, and the disassembly is completed.

The installation process of the present invention is as follows: first put the sealing ring, the inner retaining ring 132 and the safety ring 133 into the female joint 1, and then pass the male connecting pipe 31 of the male joint 3 through the safety ring 133, the sealing ring and the inner retaining ring in sequence 132, the first annular protrusion 32 on the male joint 3 fits the safety ring 133, and then puts the two buckle parts 2 from the two buckle ports on the female joint 1 respectively, and puts the sector-shaped lower part of the buckle part 2 The protrusion 23 is in contact with the clamping part 33 of the male connector 3, thereby locking the male connector 3 on the female connector 1; when the buckle 2 is installed, firstly, the tail 25 passes through the gap 124 on the cover 123 , and then snap the engaging head 21 of the buckle 2 into the buckle groove 121, that is, the installation of the buckle 2 is completed.

The present invention can be applied to automobile fuel pipes, and the male connecting pipe 31 and the female connecting pipe 13 can be ends of durable metal pipes, such as metal pipes used for fuel pipes. However, push-in fittings can also be made of duroplastic material or other commonly used injection-molded materials for connection to hose lines or pipes in the usual manner.

Claims (6)

1. A detachable quick-plug connector, including a male connector and a female connector, characterized in that: the quick-connect connector also includes a buckle, and the male connector is connected to the female connector through the buckle ; The male joint is a hollow structure, and the male joint includes a male connecting pipe, a first hose connecting part, a first annular protrusion and a second annular protrusion, and the front end of the male connecting pipe is provided with the first flexible pipe. The pipe connection part, the second annular protrusion is arranged at the middle front part of the male connecting pipe, the first annular protrusion is located at the rear side of the second annular protrusion, and the first annular protrusion is connected to the second There is a clamping part between the annular protrusions; the outer diameter of the second annular protrusion is larger than the outer diameter of the first annular protrusion; The female joint is a hollow structure, and the female joint includes an opening structure, a female connecting pipe and a second hose connection part, the front end of the female connecting pipe is provided with the opening structure, and the rear end of the female connecting pipe is provided with a There is a second hose connection part, the opening structure is provided with a through pipe insertion port along the front and rear axial directions, the upper and lower sides of the opening structure are respectively provided with card interfaces, and the two card interfaces are symmetrically arranged in the center, and the card interface It communicates with the tube insertion port; the card interface is arc-shaped, and the left and right sides of the card interface are provided with buckle grooves, and the front and rear sides of the card interface are respectively provided with arc-shaped slideways; The buckle is arc-shaped, and the buckle includes an arc-shaped body, an engaging head, a fan-shaped lower protrusion and an arc-shaped slide rail. One end of the arc-shaped body is provided with the engaging head, The fan-shaped lower protrusion is provided in the middle of the lower concave surface of the arc-shaped body, and the arc-shaped slide rails are provided on the front and rear sides of the arc-shaped body, and the arc-shaped slide rails and the arc-shaped slideways Matching and conflicting, the engaging head is clamped in the buckling groove, and the fan-shaped lower protrusion is in contact with the clamping part of the male joint; the buckle is provided with two first A buckle and a second buckle, the first buckle and the second buckle are arranged symmetrically to the center and respectively snapped into the snap-in ports on the upper and lower sides of the opening structure; The second annular protrusion of the male connector is located on the front side of the opening structure and fits on the opening structure, and the front side of the first annular protrusion fits on the rear side of the fan-shaped lower protrusion. 2. A detachable push-in connector according to claim 1, characterized in that: the buckle also includes an arched protrusion and a tail, and the arc-shaped slide rail is at the end far away from the engaging head The empennage is provided, the arched protrusion is provided on the upper convex surface of the arc-shaped slide rail, and the arched protrusion is integrally formed with the empennage; The card interface is respectively provided with a cover piece on the front and back side walls of the opposite side of the buckle groove, and the cover piece is provided with a gap for the passage of the empennage, and the two cover pieces are symmetrically arranged. 3. A detachable push-in connector according to claim 1 or 2, characterized in that: the engaging head includes a first slope, a first rounded corner, a second slope, a third slope and a second rounded corners, the lower end of the first inclined plane of the engaging head is connected to the lower end of the second inclined plane through the first rounded corner, and the upper end of the second inclined plane is connected to the upper end of the third inclined plane through the second rounded corner. The first slope, the first rounded corner, the second sloped surface, and the second rounded corner form a V-shaped groove; The buckle groove includes a first slope, a second slope, a transition fillet and a third slope. The lower end of the first slope of the buckle groove is connected to the lower end of the second slope through a transition fillet. The upper end of the second slope is connected to the upper end of the third slope, the first slope, the transition fillet and the second slope form a V-shaped protrusion, and the second slope and the third slope form an inverted V-shaped groove; The first slope of the buckle groove fits with the first slope of the buckle head, and the transition round corner of the buckle groove fits with the first round corner of the buckle head, so The second slope and the third slope of the buckle groove are attached to the second slope and the third slope of the engaging head respectively. 4. A detachable push-in connector according to claim 1 or 2, characterized in that: the arc-shaped body is provided with a rectangular protrusion on the top surface of the end close to the engaging head. 5. A detachable quick-plug connector according to claim 1 or 2, characterized in that: the female connecting pipe is also provided with a safety ring, an inner retaining ring, an outer sealing ring and an inner sealing ring, and the male The rear end of the connecting pipe passes through the safety ring, the outer sealing ring, the inner retaining ring and the inner sealing ring sequentially from front to back, and the front side of the safety ring is attached to the rear side of the first annular protrusion. 6. A detachable push-in connector according to claim 1 or 2, characterized in that: both the first hose connection part and the second hose connection part are provided with annular anti-slip protrusions.