CN108571631B - Quick connector - Google Patents

Abstract

The invention provides a quick connector, and relates to the technical field of automobile manufacturing. According to the invention, the positioning table is arranged on the female joint main body, the guide protrusion is arranged on the outer side surface of the positioning table, the distance from the upper supporting surface to the lower end surface of the guide protrusion is gradually increased and then gradually decreased, so that the outer edge of the upper supporting surface is favorably deflected inwards, the contact area between the positioning claw and the upper supporting surface is favorably reduced, and even if the amplitude of the outer supporting leg of the male joint is smaller, the positioning claw on the supporting leg can smoothly slide to the guide protrusion from the upper supporting surface, so that a worker can smoothly push the connecting lock catch downwards, and the positioning claw of the connecting lock catch smoothly moves to the locking position along the guide protrusion, thereby reducing the assembly difficulty of the quick connector and the male joint.

Description

Quick connector

Technical field

The invention relates to the technical field of automobile manufacturing, and in particular to a quick connector.

Background technique

There are many pipes in automobiles, such as the fuel system, and these pipes are usually connected to male connectors through connectors. One of the pipes is fixedly connected to the connecting joint, and the other pipe is fixedly connected to the male joint. The male joint is plugged into the connecting joint, and the boss provided on the male joint is interlocked with the inside of the connecting joint.

In the prior art, the connector includes: a female connector body and a connecting lock; the female connector body has a receiving channel for the male connector to be inserted into, and the female connector body has two opposite openings, and the two openings are connected to the receiving channel. , the part on the main body of the female connector and between the two openings forms a thrust platform; the connecting lock buckle has two legs, and when the connecting lock buckle is in the initial position, the two legs are supported on the inner side of the thrust platform facing the channel. On the wall; when in use, insert the male connector into the main body of the female connector, the male connector boss opens the two legs of the connecting lock, the staff pushes the connecting lock downward, and the connecting lock legs move down along the opening, Until the part connecting the locking legs extends out of the opening on the main body of the female connector, thereby connecting the male connector to the connector.

However, in the existing technology, there are production errors in the production process of connectors and male connectors. For example, when the outer diameter error of the male connector boss is large, after the male connector is inserted into the female connector body, the male connector boss will be outward. The support of the legs is small, making it difficult for the legs to separate from the thrust platform, and the staff cannot push the connection lock downwards, which increases the difficulty of assembling the connector and the male connector.

Contents of the invention

In view of the above-mentioned defects in the prior art, the present invention provides a quick connector, which can facilitate workers to push the connection lock downward smoothly and reduce the difficulty of assembling the quick connector and the male connector.

The invention provides a quick connector, which includes: a female connector body and a connection lock; the female connector body has a receiving channel for receiving a male connector, and the female connector body also has two oppositely arranged first openings , a positioning platform is provided at the lower part of each first opening; the positioning platform includes: an upper support surface, a lower end surface, and a side surface between the upper support surface and the lower end surface, and the positioning platform extends along the female connector A guide protrusion is formed on the outer surface of the main body in the radial direction and away from the receiving channel, and the distance of the guide protrusion increases first and then decreases from the upper support surface to the lower end surface. trend; the connection lock buckle has two legs, the upper ends of the two legs are connected through the connecting portion, and the lower ends of the two legs are respectively provided with a radial direction along the radial direction of the female connector body. Internally extending positioning claw.

Wherein, when the positioning claw is supported on the upper support surface of the positioning platform, the connection lock is in an initial position for receiving the male connector; the positioning claw moves downward to extend out of the first opening and When abutting the lower end surface, the connection lock is in a locking position to lock the male connector in the female connector body; the guide protrusion is used to guide the connecting portion when it is acted upon by an external force. The positioning pawl moves from the initial position to the locking position.

Optionally, the guide protrusion includes: an upper inclined section extending outward from top to bottom in a radial direction of the female connector body, and is connected to the bottom end of the upper inclined section, and extends from top to bottom. A downward inclined section extends downward and inward along the radial direction of the female connector body.

Optionally, the inclination of the upper inclined section is smaller than the inclination of the lower inclined section.

Optionally, a transition section is connected between the upper inclined section and the lower inclined section.

Optionally, the surface of the guide protrusion used to contact the positioning claw is an arc surface.

Optionally, a reinforcing part is provided between the two positioning platforms, and there is a distance between the reinforcing part and the positioning platform.

Optionally, the lower end surface of the positioning platform is flat.

Optionally, the lower end surface is arranged parallel to the upper support surface.

Optionally, the lower end surface and the upper support surface are flush with each other along the inner side of the radial direction of the female connector body, and the length of the projection of the lower end surface on the plane where the upper support surface is located is greater than the length of the upper support surface.

Optionally, the positioning claw is arranged on the inner side of the lower end of the support leg, and a disassembly claw is also arranged on the outer side of the lower end of the support leg, and the disassembly claw is arranged to be inclined outward along the radial direction of the female connector body from top to bottom.

Optionally, a first protrusion is further provided on the connecting portion of the connecting lock, and a slideway is provided on the female connector body, the slideway extends in a direction perpendicular to the receiving channel, and the first protrusion is slidably arranged in the slideway.

Optionally, the connection lock is also provided with a male connector slot, and the male connector slot is used to cooperate with the male connector boss on the male connector to clamp the male connector on the Connect the lock buckle to the female connector body.

In the quick connector provided by the present invention, a positioning platform is provided on the main body of the female connector, and a guide protrusion is provided on the outer side of the positioning table, and the guide protrusion protrudes outward by a distance from the upper support surface to the The lower end surface first increases and then decreases, which is beneficial to shifting the outer edge of the upper support surface inward and reducing the contact area between the positioning claw and the upper support surface. In this way, even if the width of the leg support outside the male joint is relatively large, When the hour is small, the positioning claws on the legs can also slide smoothly from the upper support surface to the guide protrusions, so that the staff can smoothly push the connecting lock buckle downward, and the positioning claws of the connecting lock buckles smoothly move along the guide protrusions to the lock. stop position, thereby reducing the difficulty of assembling the quick connector and the male connector.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

Figure 1 is a schematic structural diagram of the quick connector provided in this embodiment;

Figure 2 is a schematic structural diagram of a male connector connected to the quick connector provided in this embodiment;

Figure 3 is a schematic diagram of the state of the quick connector provided by this embodiment when the connection lock is in the initial position;

FIG4 is a schematic diagram of a state in which the connection lock buckle is located in a locked position in the quick connector provided in this embodiment;

Figure 5 is a partial schematic diagram of the quick connector provided in this embodiment when the connection lock locks the female connector body and the male connector;

Figure 6 is a schematic structural diagram of the connection lock in the quick connector provided in this embodiment;

Figure 7 is a schematic diagram 2 of the structure of the connection lock in the quick connector provided by this embodiment;

Figure 8 is a schematic structural diagram of the positioning platform in the quick connector provided in this embodiment;

Figure 9 is a schematic diagram of the state of the quick connector provided by this embodiment when the connection lock is pushed downward;

Figure 10 is a second schematic diagram of the state of the quick connector provided in this embodiment when the connection lock is pushed downward.

Description of reference numerals:

1-Female connector body; 1a-Male connector connection end; 1b-Pipeline connection end; 1c-Receiving channel; 11-Second opening; 12-Support platform; 13-First opening; 14-Positioning platform; 15-No. Three openings; 16-reinforcement part; 17-fourth boss; 18-slide;

141-Upper support surface; 142-Guide protrusion; 143-Lower end surface;

1421-upward inclined section; 1422-downward inclined section; 1423-transition section;

2-connection lock; 21-connection part; 22-leg; 23-positioning claw; 24-disassembly claw;

211-first protrusion; 212-male connector slot;

221-The second boss; 222-The third boss;

3-Male connector; 31-Male connector boss.

The above drawings have shown clear embodiments of the present invention, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention. The following embodiments and features in the embodiments may be combined with each other without conflict.

The terms "upper", "lower", etc. are used to describe the relative position of each structure in the drawings. They are only used to facilitate the description and are not used to limit the scope of the present invention. The relative relationship Changes or adjustments shall also be deemed to be within the scope of the present invention as long as there is no substantial change in the technical content.

It should be noted that in the description of the present invention, the terms "first" and "second" are only used to conveniently describe different components, and cannot be understood as indicating or implying a sequential relationship, relative importance, or implicitly indicating what is indicated. The number of technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features.

In the present invention, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. touch. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

In addition, in the present invention, unless otherwise expressly stipulated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. Disassembly and connection, or integration; it can be directly connected, or it can be indirectly connected through an intermediary, it can be the internal connection of two elements or the interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

FIG. 1 is a schematic diagram of the structure of a quick connector provided in this embodiment; FIG. 2 is a schematic diagram of the structure of a male connector connected to the quick connector provided in this embodiment.

Figure 3 is a schematic diagram of the quick connector provided by this embodiment when the connection lock is in the initial position; Figure 4 is a schematic diagram of the quick connector provided by this embodiment when the connection lock is in the locked position; Figure 5 is a partial schematic diagram of the quick connector provided in this embodiment when the connection lock locks the female connector body and the male connector.

Figure 6 is a schematic diagram 1 of the structure of the connection lock in the quick connector provided by this embodiment; Figure 7 is a schematic diagram 2 of the structure of the connection lock in the quick connector provided in this embodiment;

Please refer to Figures 1-7. This embodiment provides a quick connector, including: a female connector body 1 and a connection lock 2.

Among them, the direction pointed by arrow A in Figure 3-4 is upward; the direction pointed by arrow B is downward.

The female joint body 1 has a hollow connecting pipe. The connecting pipe has a male connector connecting end 1a for connecting to the male connector 3, and the male connector connecting end 1a is formed with a receiving channel 1c for receiving the male connector 3; the connecting pipe also has a male connector connecting end 1a for connecting to a car pipeline such as a fuel system or a ventilation system. The pipeline connection end 1b is connected to the pipeline in the connector. The pipeline connection end 1b is connected with the male connector connection end 1a, and the pipeline connection end 1b forms a flow passage. The male connector 3 also has a flow passage; after the male connector 3 is inserted into the male connector connection end 1a, the flow passage of the male connector 3 is connected to the flow passage formed by the pipeline connection end 1b.

The connecting pipe may have one or more pipe connecting ends 1b, and/or the connecting pipe may have one or more male connector connecting ends 1a. In this embodiment, the pipe connecting end 1b and the male connector in the connecting pipe are The number of joint connection ends 1a is not specifically limited, and can be set according to actual needs.

The connection lock 2 is mainly used to lock the male connector 3 on the female connector body 1 . The connection lock 2 has an initial position for releasing the male connector 3. At this time, the male connector 3 can enter the receiving channel 1c of the female connector body 1 or move out from the receiving channel 1c of the female connector body 1; the connection lock 2 also has the function of releasing the male connector 3. In the locked position where the connector 3 is locked, the male connector 3 is fixed on the female connector body 1 and fluid can pass through the overflow channel formed by the male connector 3 and the female connector body 1 together.

The connecting lock buckle 2 has two legs 22 , the upper ends of the two legs 22 are connected by a connecting portion 21 , and the lower ends of the two legs 22 are respectively provided with positioning claws 23 , and the two positioning claws 23 extend toward each other.

The female connector body 1 has two opposite second openings 11 , and a support platform 12 is provided between the two second openings 11 . The second openings 11 are used to receive the connection lock buckle when the connection lock buckle 2 is in the locked position. 2, and the connecting portion 21 can also be set up on the support platform 12 to limit the continued downward movement of the connection lock 2; at the same time, the support platform 12 is also used to increase the strength of the female connector body 1, which is beneficial to extending the female connector body 1 service life. Among them, the two legs 22 connecting the lock 2 are also inserted into the two second openings 11 respectively.

The female connector body 1 also has two first openings 13 arranged opposite to each other, and the first openings 13 are located below the second opening 11; a positioning platform 14 is provided below the two first openings 13. The positioning platform 14 forms an upper support surface 141 toward the upper end of the receiving channel 1c; the upper support surface 141 can be a plane, an inclined surface, or an arc surface, etc., as long as it can achieve the function of supporting the positioning claw 23 located in the initial device; the positioning platform also has a lower end surface and a side surface connected between the upper support surface and the lower end surface.

A third opening 15 is formed between the two positioning platforms 14 to facilitate injection molding of the female connector body 1 and to better avoid interference with the male connector 3 entering and exiting the receiving channel 1c. At this time, a reinforcement portion 16 may be provided between the two positioning platforms 14 to improve the strength of the female connector body 1 and to extend the service life of the female connector body 1; a third opening 15 is formed between the two positioning platforms 14 and the reinforcement portion 16.

In this embodiment, when the positioning claw 23 is supported on the upper supporting surface 141 of the positioning platform 14, the connection lock 2 is in the initial position of releasing the male connector 3, as shown in Figure 3; the positioning claw 23 moves downward to extend. When the second opening 11 abuts the lower end surface 143 of the positioning platform 14, the connection lock 2 is in the locking position to lock the male connector 3 on the female connector body 1, as shown in Figure 4.

The positioning platform 14 is provided with guide protrusions 142 along the radial direction of the female connector body 1 and on the outer side away from the receiving channel 1c. That is, the guide protrusions 142 are formed on the sides of the two positioning platforms 14 that are away from each other; the guide protrusions 142 are directed outward. The protruding upper supporting surface 141 is provided. The guide protrusion 142 is used to guide the positioning claw 23 to move between the initial position and the locking position. The outward protruding distance of the guide protrusion 142 first increases and then decreases from the upper support surface 141 to the lower end surface 143 .

In this embodiment and the following embodiments, the direction toward the receiving channel 1c is defined as the inside, and the direction away from the receiving channel 1c is defined as the outside.

In this embodiment, by forming a guide protrusion 142 on the outer side of the positioning platform 14, it is helpful to reduce the area of the upper support surface 141, reduce the contact area between the positioning claw 23 and the upper support surface 141, that is, it is helpful to shift the outer edge of the upper support surface inward, so that even when the outer diameter of the male joint boss 31 is small, that is, the amplitude of the outwardly supported leg 22 is small, the positioning claw 23 on the leg 22 can slide smoothly from the upper support surface 141 to the guide protrusion 142, so that the staff can smoothly push the connection lock buckle 2 downward. Among them, the staff can apply a downward propulsion force through the connection portion 21 of the connection lock buckle 2.

Moreover, since the guide protrusion 142 is disposed protruding from the upper supporting surface 141 in the direction toward the first opening 13, at this time, after the male joint boss 31 opens the leg 22 of the connection lock 2, the positioning claw 23 of the connection lock 2 Can be supported on the guide protrusion 142. When the male connector 3 is inserted into place, the male connector 3 gradually moves downward along the guide protrusion 142 to the locking position under the action of a downward pushing force exerted by the outside, such as a worker.

In this embodiment, the surface of the guide protrusion 142 used to contact the positioning claw 23 is a guide surface, and a smooth transition can be made between the guide surface and the upper support surface 141 to reduce wear on the positioning claw 23 .

Optionally, the guide surface may be an arc-shaped surface; in this case, the maximum distance between the two guide surfaces is located between the upper support surface 141 and the lower end surface 143 of the positioning platform 14 and is disposed close to the lower end surface to facilitate When the worker pushes the connection lock 2 downward, the positioning claws 23 on the legs 22 of the connection lock 2 are gradually stretched outward, thereby improving the stress distribution of the connection lock 2 and protecting the legs 22 from being damaged. It is beneficial to extend the service life of the connection lock 2.

In addition, the connection lock 2 in this embodiment is also provided with two first protrusions 211, and the first protrusions 211 can be provided on the connecting portion 21 of the connection lock 2; accordingly, the female connector body 1 is provided with There are two slideways 18 extending in a direction perpendicular to the direction in which the male connector 3 enters and exits the receiving channel 1c. Two first protrusions 211 are respectively slidably provided in the two slideways 18 to reliably define the connection lock 2 sliding direction.

The side of the connecting lock 2 away from the first protrusion 211 can also be provided with a male connector slot 212. When the male connector 3 enters the receiving channel 1c of the female connector body 1 and the male connector boss 31 is aligned with the male connector slot 212 , the male connector 3 is inserted into place. At this time, when the connection lock 2 is pushed downward to the locking position, the male connector boss 31 is sandwiched between the connection lock 2 and the female connector body 1, thereby locking the male connector 3 on the female connector body 1.

When the first protrusion 211 is located on the side of the connecting lock 2 away from the pipeline connection end 1b on the female connector body 1, the male connector slot 212 is located on the side facing the pipeline connection end 1b on the female connector body 1.

A second boss 221 can also be provided on the opposite side of the legs 22 of the connection lock 2. When the male connector 3 enters the receiving channel 1c, the male connector boss 31 offsets the second boss 221 on the leg 22, and Push the second boss 221 outward to support the leg 22 outward. Wherein, the distance between the two second bosses 221 can gradually decrease from top to bottom, that is, the side walls of the second bosses facing each other of the two second bosses 221 are inclined surfaces or curved surfaces, so that the male connector 3 can After being inserted into place, the two second bosses 221 are smoothly spread apart, that is, the two support legs 22 are spread apart; and the minimum distance between the two second bosses 221 is smaller than the outer diameter of the male connector boss 31 .

A third boss 222 is also provided on the opposite side of the support leg 22; a fourth boss 17 is provided on the female connector body 1, and the upper end of the fourth boss 17 is used to enclose the second opening 11. The lower end of 17 is used to enclose the first opening 13; under the action of external force, when the connecting lock 2 moves back from the locking position, the third boss 222 on the leg 22 is used to offset the fourth boss 17 , to prevent the connection lock 2 from coming out of the female connector body 1; when the external force is removed, the connection lock 2 moves downward under its own gravity until the positioning claw 23 of the connection lock 2 is supported on the upper support surface of the positioning platform 14 141 on.

The upper end surface of the third boss 222 is used to offset the lower end surface of the fourth boss 17 . The upper end surface of the third boss 222 and the lower end surface of the fourth boss 17 can both be flat surfaces; the third boss 222 The side walls of the third boss that are away from each other can be inclined inward from top to bottom, and specifically can be an inclined surface or an arc surface, so as to facilitate the connection lock 2 to smoothly enter the female connector body 1 and be in the initial position.

The quick connector provided in this embodiment is provided with a positioning platform 14 on the female connector body 1, and a guide protrusion 142 is provided on the outer side of the positioning platform, and the guide protrusion 142 protrudes outward by a distance from the upper support surface 141 to The lower end surface 143 first increases and then decreases, which is beneficial to shifting the outer edge of the upper supporting surface 141 inward and reducing the contact area between the positioning claw 23 and the upper supporting surface 141. In this way, even when the male connector 3 is externally supported When the width of the support leg 22 is small, the positioning claw 23 on the support leg 22 can also slide smoothly from the upper support surface 141 to the guide protrusion 142, so that the staff can smoothly push the connecting lock buckle 2 downward, and the connecting lock buckle 2 The positioning claw 23 smoothly moves to the locking position along the guide protrusion 142, thereby reducing the difficulty of assembling the quick connector and the male connector 3.

Figure 8 is a schematic structural diagram of the positioning platform in the quick connector provided by this embodiment; Figure 9 is a schematic diagram of the state of the quick connector provided by this embodiment when the connection lock is pushed downward; Figure 10 is a schematic diagram of the state provided by this embodiment In the quick connector, the schematic diagram 2 shows the state of the connection lock when it is pushed downward. Among them, arrow A in Figure 8-10 points upward; arrow B points downward.

8-10, and continue to refer to FIGS. 1-7, optionally, the guide protrusion 142 includes: an upper inclined section 1421 extending from top to bottom and outward, and a lower inclined section 1422 extending from top to bottom and inward, and the upper inclined section 1421 is located above the lower inclined section 1422. That is, the guide surface of the guide protrusion 142 has an upper inclined surface and a lower inclined surface.

After the male joint boss 31 is inserted into place and the legs 22 of the connection lock 2 are opened, the positioning claw 23 is separated from the upper supporting surface 141 of the positioning platform 14, as shown in Figure 9. At this time, the staff can open the connection lock. The buckle 2 exerts a downward thrust to push the connecting lock buckle 2 downward. The positioning claws 23 on the legs 22 of the connecting lock buckle 2 gradually move downward along the upper inclined surface of the upper slope section 1421; the connecting lock buckle 2 legs 22 After the upper positioning claw 23 crosses the upper slope section 1421, it will continue to gradually transition to the lower end of the positioning platform 14 along the lower slope of the lower slope section 1422, as shown in Figure 10.

In this way, the guiding protrusion 142 can guide the connecting lock buckle 2 to move smoothly from the initial position to the locking position, thereby effectively avoiding the positioning claw 23 from being stuck in the middle area between the initial position and the locking position, thereby realizing the reliable locking of the connecting lock buckle 2 to the male connector 3; at the same time, it can also improve the stress distribution of the connecting lock buckle 2, which is beneficial to extending the service life of the connecting lock buckle 2.

Moreover, when the connecting lock 2 returns from the locked position, an outward force is exerted on the positioning claw 23, and the positioning claw 23 can also quickly break away from the lower end of the positioning platform 14 and slide to the lower inclined surface. At this time, again Applying an upward pulling force to the connection lock 2, the positioning claw 23 can gradually move upward along the lower inclined surface, and transition to the upper supporting surface 141 of the positioning platform 14 along the upper inclined surface, thereby also preventing the positioning claw 23 from being stuck. The function of the intermediate zone between the initial position and the locked position, as well as the function of improving the stress distribution of the connecting lock buckle 2 and extending the service life of the connecting lock buckle 2.

Optionally, a transition section 1423 can be connected between the upper inclined section 1421 and the lower inclined section 1422. The transition section 1423 can have a smooth curved surface, and the smooth curved surface is a smooth transition between the upper inclined surface and the lower inclined surface, so that the positioning claw 23 It can move smoothly from the upper inclined surface to the lower inclined surface and reduces wear on the positioning claw 23. At the same time, the transition section 1423 is also conducive to the injection molding of the positioning boss.

Optionally, the inclination of the upper inclined section 1421 is smaller than the inclination of the lower inclined section 1422 . Among them, the direction in which the connecting lock 2 is pushed is the vertical direction, and the inclination of the upper inclined section 1421 refers to the angle α between the upper inclined surface of the upper inclined section 1421 and the ground plane; The slope refers to the angle β between the lower slope of the lower slope section 1422 and the ground plane. Among them, the included angle refers to the positive angle.

By setting the inclination of the upper inclined section 1421 to be relatively small, the positioning claw 23 connected to the lock buckle 2 can gradually move downward along the upper inclined surface, and the legs 22 connected to the lock buckle 2 can be gradually and relatively slowly opened. The stress distribution of the connecting lock buckle 2 can be better improved to avoid stress concentration and breakage on the connecting lock buckle 2 such as the connection between the leg 22 and the connecting part 21 . By setting the inclination of the upper inclined section 1421 to be relatively large, while achieving the guiding function of the upper inclined section 1421, it is also conducive to shortening the distance that the positioning claw 23 moves along the lower inclined surface, so that the positioning claw 23 can quickly move to The lower end of the positioning platform 14 is in contact with the lower end surface of the positioning platform 14, and when the connecting lock buckle 2 is returned, it is also conducive to the quick return of the connecting lock buckle 2.

Optionally, the lower end surface 143 of the positioning platform 14 is flat; the positioning claw 23 can be cube-shaped, and the upper end surface of the positioning claw 23 can also be flat. At this time, the positioning claw 23 can be in surface contact with the positioning platform 14. Therefore, there can be a larger contact area between the positioning claw 23 and the positioning platform 14, thereby positioning the connection lock 2 in its locking position more reliably.

The upper support surface 141 can also be flat, that is, parallel to the ground plane, that is, the upper support surface 141 can be arranged parallel to the lower end surface 143 of the positioning platform 14; at this time, the lower end surface of the positioning claw 23 can also be flat. shape, when the connection lock 2 is in the initial state, the positioning claw 23 can also contact the upper supporting surface 141 through surface contact, which is beneficial to improving the wear of the positioning claw 23.

Optionally, the lower end surface 143 of the positioning platform 14 extends outwards from the upper supporting surface 141 , that is, the lower end surface 143 of the positioning platform 14 and the upper supporting surface 141 are flush with each other along the inner side of the radial direction of the female connector body 1 , and the lower end surface 143 and the upper supporting surface 141 are flush with each other. The length of the projection of the end surface 143 on the plane where the upper supporting surface 141 is located is greater than the length of the upper supporting surface 141. In this way, while realizing the guiding function of the upper inclined section 1421, it is also conducive to shortening the distance that the positioning claw 23 moves along the lower inclined surface. This enables the positioning claw 23 to move quickly to the lower end of the positioning platform 14 and abuts against the lower end surface of the positioning platform 14, and also facilitates the quick return of the connecting lock buckle 2 when the connecting lock buckle 2 returns to its position. In addition, it is also beneficial to increase the contact area between the upper end surface of the positioning claw 23 and the positioning platform 14, so that the positioning claw 23 is not easy to come out when locked without disassembly, thereby increasing its reliability.

Optionally, the positioning claw 23 is provided on the inside of the lower end of the leg 22; a detachment claw 24 is also provided on the outside of the lower end of the two legs 22. The detachment claw 24 is inclined from top to bottom to facilitate the connection of the lock buckle 2. Return operation.

At this time, when the connecting lock 2 returns to its position, an outward force can be applied to the detachment claw 24 so that the positioning claw 23 can quickly move from the lower end surface 143 to the lower inclined surface; and then an upward force can be applied to the positioning claw 23 The acting force causes the positioning claw 23 to transition along the lower inclined surface to the upper inclined surface and finally move to the upper supporting surface 141 .

Moreover, the outer surface of the disassembly claw 24 can be flush with the outer surface of the female joint body 1 close to the disassembly claw 24 to improve the aesthetics of the quick connector and prevent accidental impact of the positioning claw by external force; at this time, the positioning claw can be The three openings 15 exert an outward force on the disassembly claw 24 .

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. A quick connector, characterized in that it includes: a female connector body and a connection lock; The female connector body has a receiving channel for receiving the male connector, the female connector body also has two first openings arranged oppositely, and a positioning platform is provided at the lower part of each first opening; The positioning platform includes: an upper support surface, a lower end surface, and a side surface located between the upper support surface and the lower end surface. The positioning platform faces along the radial direction of the female connector body and away from the outer side of the receiving channel. The outer protrusion is formed with a guide protrusion, and the distance of the guide protrusion that protrudes outward increases first and then decreases from the upper support surface to the lower end surface; The connection lock buckle has two legs, the upper ends of the two legs are connected through the connecting part, and the lower ends of the two legs are respectively provided with inward extensions along the radial direction of the female connector body. positioning claw; Wherein, when the positioning claw is supported on the upper support surface of the positioning platform, the connection lock is in an initial position for receiving the male connector; the positioning claw moves downward to extend out of the first opening and When abutting against the lower end surface, the connection lock is in a locking position that locks the male connector in the female connector body; The guide protrusion is used to guide the positioning claw to move from the initial position to the locking position when the connecting part is acted upon by an external force; The guide protrusion includes: an upper inclined section extending outward from top to bottom along the radial direction of the female connector body, and a lower inclined section connected to the bottom end of the upper inclined section and extending inward from top to bottom along the radial direction of the female connector body; The inclination of the upper inclined section is smaller than the inclination of the lower inclined section; A transition section is connected between the upper inclined section and the lower inclined section; The surface of the guide protrusion used to contact the positioning claw is an arc surface; The connection lock buckle is also provided with a male connector slot, and the male connector slot is used to cooperate with the male connector boss on the male connector to clamp the male connector between the connection lock buckle and the female connector body. 2. The quick connector according to claim 1, characterized in that a reinforcing part is provided between the two positioning platforms, and there is a distance between the reinforcing part and the positioning platform. 3. The quick connector according to claim 2, wherein the lower end surface of the positioning platform is flat. 4. The quick connector according to claim 3, wherein the lower end surface is arranged parallel to the upper supporting surface. 5. The quick connector according to claim 4, wherein the lower end surface and the upper supporting surface are flush with each other along the inner side of the radial direction of the female connector body, and the lower end surface is located where the upper supporting surface is located. The length of the projection on the plane is greater than the length of the upper support surface. 6. The quick connector according to claim 1, wherein the positioning claw is arranged inside the lower end of the leg, and a disassembly claw is also provided outside the lower end of the leg, and the disassembly claw It is arranged to be inclined outward from top to bottom along the radial direction of the female connector body; And/or, a first protrusion is further provided on the connecting portion of the connecting lock, a slideway is provided on the female connector body, the slideway extends in a direction perpendicular to the receiving channel, and the first protrusion is slidably provided in the slideway.