Quick connector

Abstract

The utility model discloses a quick connector, which comprises a female joint, a male joint and a female joint, the female joint comprises a female joint shell, a guide post and a female joint valve core, a female joint flow channel is formed between the guide post and the female joint shell, and the female joint valve core can move in a female core left moving state and a female core right moving state; the male connector comprises a male connector shell and a male connector valve element, a male connector flow channel is formed in the male connector shell, and movement of the male connector valve element has a male element left movement state and a male element right movement state; the male connector shell is inserted into the female connector flow channel, so that the female connector valve element is in a female element left moving state, and the guide column is inserted into the male connector flow channel, so that the male connector valve element is in a male element right moving state. When the male connector and the female connector are disassembled, the female connector valve element moves from a female core left moving state to a female core right moving state, the internal space of the female connector is increased, the male connector valve element moves from a male core right moving state to a male core left moving state, the internal space of the male connector is increased, the purpose of pressure relief is achieved, and internal liquid cannot overflow under the action of liquid pressure; and use requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe joint technical field, especially quick connector. BACKGROUND

[0002] In the field of automatic fluid transmission, quick connectors need to meet the requirements of high efficiency, reliable sealing, pressure resistance and corrosion resistance. High-precision equipment such as liquid injection machines have strict requirements on the vacuum sealing performance, high-pressure resistance and operation efficiency of the connector. The existing quick connectors, such as quick couplings, use expansion pieces to prop open the sealing pieces to achieve good sealing. However, when the liquid delivery is completed, it is easy to cause leakage during disassembly, which cannot meet the use requirements. SUMMARY

[0003] The utility model discloses at least solve one of the prior art technical problems. Therefore, the utility model provides a kind of quick connector.

[0004] According to the quick connector of the utility model embodiment, comprising:

[0005] The female connector includes a female head housing, a guide column disposed in the female head housing, and a female head valve core. The guide column and the female head housing form a female head flow channel. The female head valve core is slidably disposed in the female head flow channel. The movement of the female head valve core has a female core left-moving state and a female core right-moving state. In the female core left-moving state, the female head flow channel is open. In the female core right-moving state, the female head flow channel is closed.

[0006] The male connector includes a male head housing and a male head valve core disposed in the male head housing. The male head housing has a male head flow channel. The male head valve core is slidably disposed in the male head flow channel. The movement of the male head valve core has a male core left-moving state and a male core right-moving state. In the male core left-moving state, the male head flow channel is closed. In the male core right-moving state, the male head flow channel is open.

[0007] The male head housing is inserted into the female head flow channel, so that the female head valve core is in the female core left-moving state. The guide column is inserted into the male head flow channel, so that the male head valve core is in the male core right-moving state. The male head housing and the guide column form a transition flow channel. The female head flow channel and the male head flow channel are connected through the transition flow channel.

[0008] According to the quick connector provided by the embodiment of the utility model, at least has following technical effect: When split male joint and female joint, the internal space of female joint increases in the process that female valve core moves from female core left shift state to female core right shift state, the internal space of male joint increases in the process that male valve core moves from male core right shift state to male core left shift state, reach the purpose of pressure relief, make the internal liquid in the process that split male joint and female joint will not overflow under the action of liquid pressure, satisfy the use demand.

[0009] According to some embodiments of the utility model, the female head shell is equipped with female head elastic element for driving the female head valve core to move right, and the male head shell is equipped with male head elastic element for driving the male head valve core to move left.

[0010] According to some embodiments of the utility model, the male head flow channel has a narrowing flow section, and the male head valve core is provided with a first convex edge, and in the male core left shift state, the first convex edge abuts against the side wall of the narrowing flow section from right to left.

[0011] According to some embodiments of the utility model, the number of male head elastic elements is two, and the two male head elastic elements are a first spring and a second spring respectively; the right side of the male head valve core is provided with a sliding rod for sliding connection with the male head shell, the first spring is sleeved on the outside of the sliding rod and abuts against the male head valve core, and the second spring is sleeved on the outside of the first spring and abuts against the first convex edge.

[0012] According to some embodiments of the utility model, the female head valve core is provided with a groove, the inside of the male head shell is provided with a first sealing ring, and the side wall of the groove is sealingly connected with the male head shell through the first sealing ring.

[0013] According to some embodiments of the utility model, in the male core left shift state, the male head valve core is sealingly connected with the male head shell through the first sealing ring.

[0014] According to some embodiments of the utility model, the right end of the guide column is provided with a second convex edge, and in the female core right shift state, the female head valve core abuts against the second convex edge from left to right.

[0015] According to some embodiments of the utility model, the outside of the guide column is provided with a second sealing ring, and in the female core right shift state, the female head valve core is sealingly connected with the guide column through the second sealing ring.

[0016] According to some embodiments of the utility model, the outside of the female head valve core is provided with a third sealing ring, and the female head valve core is sealingly connected with the female head shell through the third sealing ring.

[0017] According to some embodiments of the utility model, the outer side of the male head shell is equipped with a limiting step, and the female head shell abuts against the limiting step from left to right.

[0018] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0020] Figure 1 is the structure schematic view of female joint in an embodiment of the utility model;

[0021] Figure 2 is the structure schematic view of male joint in an embodiment of the utility model;

[0022] Figure 3 is the schematic view of joint state of an embodiment of the utility model;

[0023] Figure 4 is the schematic view of alignment state of an embodiment of the utility model;

[0024] In the drawings:

[0025] 100-female head shell;101-female head flow passage;111-guide column main body;112-guide column end;113-second sealing ring;114-second convex edge;120-female head valve core;121-third sealing ring;130-pyramid spring;140-guide column connecting piece;200-male head shell;201-male head flow passage;210-sliding rod;220-male head valve core;221-first convex edge;222-first sealing ring;231-first spring;232-second spring;240-sliding seat;290-limiting step. DETAILED DESCRIPTION

[0026] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as the limitation of the utility model.

[0027] In the description of the utility model, need understanding, relate to the direction description, for example the direction or positional relation of indication such as upper, lower, front, back, left, right is based on the direction or positional relation shown in drawing, only for the convenience of describing the utility model and simplifying the description, and is not the indication device or element must have a particular orientation, with a particular orientation configuration and operation, therefore can not be understood as the limitation of the utility model. In addition, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceed and so on are understood as not including the number, above, below, within and so on are understood as including the number. If it is described to first, second, only for the purpose of distinguishing technical features, and can not be understood as indicating relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0028] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be broadly understood, and the specific meaning of the above words in the utility model can be reasonably determined by the person skilled in the art in combination with the specific content of the technical scheme.

[0029] The following refers to Figures 1 to 4 The utility model discloses a quick connector.

[0030] The utility model discloses a quick connector.

[0031] Referring to Figure 1 The female head housing 100 is in the form of a horizontally arranged tube, and the left end of the female head housing 100 is provided with a female head connecting structure for connecting to an external pipeline. The female head connecting structure can be an internal thread, and the female connector can be installed on the external pipeline that needs to be quickly connected through a threaded connection during use. A guide post connecting piece 140 is fixedly arranged in the female head housing 100, and the left end of the guide post is connected to the guide post connecting piece 140. The guide post connecting piece 140 is provided with a horizontally arranged through hole to prevent the guide post connecting piece 140 from blocking the flow channel in the female head housing 100.

[0032] The female head flow passage 101 is formed between the guide column and the female head shell 100, the female valve core 120 is annular, and the female valve core 120 is arranged in the female head flow passage 101 in a transverse sliding mode. The outer side of the female valve core 120 is in sliding sealing connection with the inner wall of the female head outer side. The guide column has a guide column main body 111 and a guide column end portion 112 arranged at the right end of the guide column main body 111. The diameter of the guide column end portion 112 is greater than the diameter of the guide column main body 111. The movement of the female valve core 120 has a female core left-moving state and a female core right-moving state. In the female core left-moving state, the female valve core 120 is sleeved between the guide column main body 111 and the female head shell 100. The sum of the radial dimensions of the female valve core 120 and the guide column main body 111 is less than the internal radial dimension of the female head shell 100, so that a gap is left between the female valve core 120 and the guide column main body 111. Therefore, the female head flow passage 101 is open. In the female core right-moving state, the female valve core 120 is sleeved between the guide column end portion 112 and the female head shell 100. The outer side and the inner side of the female valve core 120 are in sliding sealing with the female head shell 100 and the guide column end portion 112 respectively. Therefore, the female head flow passage 101 is closed.

[0033] Referring to Figure 2 The male connector includes a male head shell 200 and a male valve core 220 arranged in the male head shell 200. The male head shell 200 is in a tubular shape arranged transversely. The right end of the male head shell 200 is provided with a male head connecting structure for connecting to an external pipeline. The male head connecting structure can be an internal thread. In use, the male connector can be installed on the external pipeline requiring quick connection in a threaded connection mode.

[0034] The male head shell 200 is provided with a male head flow passage 201. The male valve core 220 is arranged in the male head flow passage 201 in a transverse sliding mode. The male head shell 200 is provided with a sliding seat 240 and a sliding rod 210 arranged transversely. The right end of the sliding rod 210 is slidingly inserted into the sliding seat 240. The sliding seat 240 is provided with a through hole arranged transversely to prevent the sliding seat 240 from blocking the flow passage in the male head shell 200. The male valve core 220 is arranged at the left end of the sliding rod 210.

[0035] The male head flow passage 201 has a first flow section, a second flow section arranged at the right side of the first flow section, and a narrowed flow section connected between the first flow section and the second flow section. The first flow section is arranged at the left end of the male head shell 200. The diameter of the first flow section is less than the diameter of the second flow section.

[0036] The movement of the male valve core 220 has a male core left-moving state and a male core right-moving state. In the male core left-moving state, the male valve core 220 is in sliding sealing connection with the inner wall of the first flow section. Therefore, the male head flow passage 201 is closed. In the male core right-moving state, the male valve core 220 is arranged in the second flow section. The diameter of the male valve core 220 is less than the diameter of the second flow section. A gap is arranged between the male valve core 220 and the inner wall of the second flow section. Therefore, the male head flow passage 201 is open.

[0037] The outer diameter of the left end of the male head shell 200 is not greater than the inner diameter of the female head shell 100, so that the left end of the male head shell 200 can be inserted into the female head shell 100 from right to left; meanwhile, the diameter of the guide post end portion 112 is not greater than the diameter of the male head valve core 220, so that the left end of the male head shell 200 can be sleeved outside the guide post from right to left;

[0038] The female connector and the male connector have a joint state and a separation state, in the joint state, referring to Figure 3 , the male head shell 200 is inserted into the female head flow channel 101, the male head shell 200 abuts against the female head valve core 120 from right to left, so that the female head valve core 120 is in the female core left-moving state; the guide post is inserted into the male head flow channel 201, the guide post abuts against the male head valve core 220 from left to right, so that the male head valve core 220 is in the male core right-moving state; the transition flow channel is formed between the male head shell 200 and the guide post, and the female head flow channel 101 and the male head flow channel 201 are communicated through the transition flow channel; in the separation state, the male connector is separated from the female connector, the female head valve core 120 is in the female core right-moving state, and the male head valve core 220 is in the male core left-moving state.

[0039] When liquid needs to be delivered, the male connector and the female connector are driven to be connected, so that the female head valve core 120 is in the female core left-moving state and the male head valve core 220 is in the male core right-moving state, and liquid delivery can be performed through the male head flow channel 201, the transition flow channel and the female head flow channel 101, and the joint can be realized only by driving the male connector and / or the female connector to move, without manual buckling or locking, which is convenient for realizing automatic production;

[0040] When the delivery of liquid is completed and the split is performed, the male connector is separated from the female connector, the female head valve core 120 is moved from the female core left-moving state to the female core right-moving state, and the male head valve core 220 is moved from the male core right-moving state to the male core left-moving state, so that the female head flow channel 101 and the male head flow channel 201 are both blocked, preventing liquid leakage.

[0041] It can be understood that the liquid delivered has a certain pressure, which causes the liquid to easily overflow when the male connector and the female connector are split. In the process of splitting the male connector and the female connector, the internal space of the female connector increases when the female head valve core 120 is moved from the female core left-moving state to the female core right-moving state, and the internal space of the male connector increases when the male head valve core 220 is moved from the male core right-moving state to the male core left-moving state, so that the purpose of pressure relief is achieved, and the internal liquid will not overflow under the action of liquid pressure in the process of splitting the male connector and the female connector, meeting the use requirement.

[0042] In some embodiments of the utility model, the female head shell 100 is internally provided with a female elastic member for driving the female valve core 120 to move rightwards, and the male head shell 200 is internally provided with a male elastic member for driving the male valve core 220 to move leftwards. It can be understood that under the action of liquid pressure, even if the elastic member is not provided, the female valve core 120 will move rightwards and reset, and the male valve core 220 will move leftwards and reset when the male joint and the female joint are split; the male elastic member and the female elastic member are provided in the embodiment, the reset action of the female valve core 120 and the male valve core 220 is more streamlined, and the reset speed is faster, which is beneficial to prevent liquid leakage, and the seal can also be maintained when the liquid pressure is small due to shutdown.

[0043] In some embodiments of the utility model, the male head flow channel 201 has a narrowed flow section, and the male valve core 220 is externally provided with a first convex edge 221, and in the male core leftward movement state, the first convex edge 221 abuts against the side wall of the narrowed flow section from right to left.

[0044] The diameter of the narrowed flow section gradually decreases from right to left, the first convex edge 221 sealingly abuts against the side wall of the narrowed flow section, and the seal between the male valve core 220 and the male head shell 200 in the male core rightward movement state is realized; at the same time, the leftward movement limit of the male valve core 220 is limited, and the male valve core 220 is prevented from being pulled out.

[0045] In some embodiments of the utility model, the number of male elastic members is two, and the two male elastic members are respectively a first spring 231 and a second spring 232; the right side of the male valve core 220 is provided with a sliding rod 210 for sliding connection with the male head shell 200, the first spring 231 is sleeved on the outside of the sliding rod 210 and abuts against the male valve core 220, and the second spring 232 is sleeved on the outside of the first spring 231 and abuts against the first convex edge 221. The right side of the male valve core 220 is provided with a first accommodating groove recessed to the left, and the left end of the first spring 231 is arranged in the first accommodating groove; by arranging the first spring 231 and the second spring 232, the traditional single spring rebound jamming problem is solved, the double spring structure is not easy to deform or fatigue when bearing high load for a long time, even if the spring is broken, the spring force will not suddenly decrease, and the safe operation of the equipment is ensured.

[0046] In some embodiments of the utility model, the female valve core 120 is provided with a groove, the inner side of the male head shell 200 is provided with a first sealing ring 222, and the side wall of the groove is sealingly connected with the male head shell 200 through the first sealing ring 222. The groove is recessed to the left from the right side of the female valve core 120; in this way, the sealing connection between the male head shell 200 and the female valve core 120 in the joint state is realized, and liquid leakage during liquid conveying is prevented.

[0047] In some embodiments of the utility model, the left side of female valve core 120 is provided with the second accommodating groove which is recessed to right, female elastic piece is the pagoda shaped spring 130 which left end radial size is larger and right end radial size is smaller, the right end of pagoda shaped spring 130 is arranged in the second accommodating groove;Through the optimization of wire diameter and number of turns design, avoid the problem that ordinary spring is easily deformed or service life is shortened under high pressure, the effective number of turns of pagoda shaped spring 130 gradually reduces in compression process, stiffness nonlinearly increases, can not only high -efficiently absorb vibration energy, but also can provide stable support in high load stage.

[0048] In some embodiments of the utility model, in male core left shift state, male valve core 220 and male head shell 200 are sealedly connected through first sealing ring 222.First sealing ring 222 can seal between female valve core 120 and male head shell 200 in joint state, and can seal between male valve core 220 and male head shell 200 in separation state, and the structure is simple and compact.It should be noted that the male joint is generally connected to the source of infusion, that is, the liquid pressure in the male joint is larger in the separation state, and the sealing requirement of the male joint is higher.This embodiment simultaneously sets first sealing ring 222 and first convex edge 221, cooperates the sealing between male valve core 220 and male head shell 200, and the sealing effect is better, and the use requirement is satisfied.

[0049] In some embodiments of the utility model, the right end of the guide column is provided with the second convex edge 114, and in the female core right shift state, the female valve core 120 abuts against the second convex edge 114 from left to right.The second convex edge 114 can limit the right shift limit of the female valve core 120, and avoid the female valve core 120 from coming out.

[0050] In some embodiments of the utility model, the outer periphery of the guide column is provided with the second sealing ring 113, and in the female core right shift state, the female valve core 120 and the guide column are sealedly connected through the second sealing ring 113.The second sealing ring 113 is arranged to block the female flow channel 101 in the female core right shift state.

[0051] In some embodiments of the utility model, the outer periphery of the female valve core 120 is provided with the third sealing ring 121, and the female valve core 120 and the female head shell 100 are sealedly connected through the third sealing ring 121.The third sealing ring 121 is arranged to keep the female valve core 120 and the female head shell 100 slidingly sealed, and the female core left shift state and the female core right shift state can realize the sealing between the female valve core 120 and the female head shell 100.

[0052] In some embodiments of this utility model, a limiting step 290 is provided on the outer side of the male connector housing 200, and the female connector housing 100 abuts against the limiting step 290 from left to right. This can avoid interference between the male and female connectors, thereby preventing the female valve core 120 from colliding with the guide post connector 140 and preventing the male valve core 220 from colliding with the sliding seat 240.

[0053] In the separated state, the female connector housing 100 protrudes to the right from the right end of the guide post, and the female and male connectors are aligned. In the aligned state, as follows: Figure 4 As shown, the left end of the male connector is inserted into the part of the female connector housing 100 that protrudes from the guide post, which facilitates the alignment of the male and female connectors. In the separated state, the left end of the male connector housing 200 is flush with the male connector valve core 220. When the male and female connectors are separated, the male connector valve core 220 first moves to the first flow section to cut off the male connector flow channel 201. Then the male connector valve core 220 will continue to move to the left to release pressure, preventing the liquid in the male connector from overflowing under pressure.

[0054] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A quick connector, characterized in that, include: A female connector includes a female connector housing, a guide post disposed within the female connector housing, and a female connector valve core. A female connector flow channel is formed between the guide post and the female connector housing. The female connector valve core is slidably disposed within the female connector flow channel in a transverse direction. The movement of the female connector valve core has a leftward movement state and a rightward movement state. In the leftward movement state, the female connector flow channel is open, and in the rightward movement state, the female connector flow channel is closed. A male connector includes a male connector housing and a male connector valve core disposed within the male connector housing. The male connector housing is provided with a male connector flow channel. The male connector valve core is slidably disposed within the male connector flow channel in a transverse direction. The movement of the male connector valve core has a male connector leftward movement state and a male connector rightward movement state. In the male connector leftward movement state, the male connector flow channel is blocked, and in the male connector rightward movement state, the male connector flow channel is open. The male connector housing is inserted into the female connector flow channel, causing the female connector valve core to be in a leftward position. The guide post is inserted into the male connector flow channel, causing the male connector valve core to be in a rightward position. A transition flow channel is formed between the male connector housing and the guide post. The female connector flow channel and the male connector flow channel are connected through the transition flow channel.

2. The quick connector according to claim 1, characterized in that: The female connector housing is provided with a female connector elastic element for driving the female connector valve core to move to the right, and the male connector housing is provided with a male connector elastic element for driving the male connector valve core to move to the left.

3. The quick connector according to claim 2, characterized in that: The male connector has a narrowed flow section, and the outer periphery of the male connector valve core is provided with a first protruding edge. In the leftward movement state of the male connector, the first protruding edge abuts against the side wall of the narrowed flow section from right to left.

4. The quick connector according to claim 3, characterized in that: The number of male connector elastic elements is two, namely a first spring and a second spring; the right side of the male connector valve core is provided with a slide rod for sliding connection to the male connector housing, the first spring is sleeved on the outside of the slide rod and abuts against the male connector valve core, and the second spring is sleeved on the outside of the first spring and abuts against the first protrusion.

5. The quick connector according to claim 1, characterized in that: The female valve core has a groove, and the inner side of the male valve housing has a first sealing ring. The side wall of the groove is sealed to the male valve housing through the first sealing ring.

6. The quick connector according to claim 5, characterized in that: In the leftward shift state of the male core, the male valve core and the male outer shell are sealed together by the first sealing ring.

7. The quick connector according to claim 1, characterized in that: The guide post has a second protruding edge at its right end. In the rightward movement state of the female core, the female valve core abuts against the second protruding edge from left to right.

8. The quick connector according to claim 1, characterized in that: The guide post is provided with a second sealing ring on its outer periphery. In the rightward movement state of the female core, the female valve core and the guide post are sealed and connected by the second sealing ring.

9. The quick connector according to claim 1, characterized in that: The outer periphery of the female valve core is provided with a third sealing ring, and the female valve core and the female outer shell are sealed together by the third sealing ring.

10. The quick connector according to claim 1, characterized in that: The outer side of the male head shell is provided with a limiting step, and the female head shell abuts against the limiting step from left to right.

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