CN109185587A - A fluid quick connector - Google Patents

Abstract

The invention relates to a fluid quick connector. The fluid quick connector of the present invention comprises a male connector assembly and a female connector assembly, wherein the male connector assembly comprises a locking ring, a locking ring spring, a plurality of locking elements, and wherein when the fluid quick connector is in an engaged state, a forward end of a female piston sleeve of the female connector assembly partially extends into an annular cavity between a male piston sleeve and a male socket sleeve of the male connector assembly; and, the locking ring is in the advanced position and presses the locking elements into the locking through-holes and locking grooves on the outer circumferential surface of the female piston sleeve, thereby lockingly connecting the male and female end fitting assemblies. The fluid quick connector can fixedly install the female end connector component on the cooling plate under the condition of not increasing the complexity of manual operation, the female end connector component can simply realize the automatic pressure relief protection function at low cost, and the joint quality and the sealing performance in the joint state are high.

Description

A fluid quick connector

technical field

The invention relates to a fluid quick connector, in particular to a fluid quick connector with a locking ring arranged on a male end connector assembly.

Background technique

On devices in various fields such as rail transit (for example, on rail vehicles), various liquid lines (such as cooling lines, etc.) widely exist, which are connected in series between various devices of the device. Therefore, the liquid lines between the devices The connection is usually equipped with a liquid quick connector, such as the port of the cooling line of the cooling plate is connected with the pipeline or other equipment through the liquid quick connector to form a fluid channel.

In the existing fluid quick connector, in order to realize the function of quick disassembly, it generally includes a male end connector assembly and a female end connector assembly that can realize mutual quick connection, and they are adapted to realize mutual insertion. For example, in the quick connector disclosed in the utility model patent with the patent application number of CN201620179878.0 and the title of "compact fluid connection element", the front end of the male end connector assembly and the front end of the female end connector assembly are used to engage with each other; the male end connector Both the assembly and the female end joint assembly are one-way joints, and the male end joint assembly includes a male end seat sleeve, a male end piston sleeve, and a male end valve body and a male end arranged in the male end passage cavity inside the male end piston sleeve. a valve body spring; the female end joint assembly includes a female end piston sleeve, and a female end valve body, a female end valve body spring, and a female end ejector rod disposed in the female end passage cavity inside the female end piston sleeve; and, Locking components such as locking rings, locking balls, etc., used to realize the locking engagement of the male end joint assembly and the female end joint assembly, are provided at the female end.

When the male end fitting assembly is inserted into the female end fitting assembly to the right for engagement, the male end piston sleeve enters the female end channel cavity inside the female end piston sleeve so that the female end plunger contacts and presses against the male end valve body to the left , the male end piston sleeve contacts and abuts the female end valve body to the right, so that the male end valve body moves to the left along the axial direction inside the male end piston sleeve, and the female end valve body is in the inner part of the female end piston sleeve. The inside moves to the right in the axial direction to release the respective seals of the male end joint assembly and the female end joint assembly to achieve fluid communication; at the same time, the lock ball of the female end is matched with the locking groove on the male end piston sleeve of the male end, and the locking ring covers Locking and retaining the bead in the locking groove thereby achieves locking engagement of the male and female end fitting assemblies.

The fluid quick connector of the above structure requires manual manual operation of the locking ring (for example, the locking ring is returned to the rear end to release the lock ball in the radial direction to release the locking of the engagement), that is, manual operation is required. One end of the female connector assembly. Considering the convenience of manual operation, the male end joint assembly is generally selected to be fixedly connected to relatively fixed or difficult to move equipment (such as cooling plates), and the female end joint assembly with locking ring is fixedly connected to relatively small or easy to move. equipment or hoses.

However, equipment such as the cooling plate where the male end joint assembly is located usually requires the male end joint assembly to have a pressure relief protection function when its internal hydraulic conditions are not normal, thereby preventing damage to equipment such as high value cooling plates; this is obviously related to The sealing performance of the male end joint assembly in the separated state (the tightness between the male end piston sleeve and the male end valve body) is contrary to the requirements, and the existing design of the male end joint assembly is completely difficult to satisfy the above-mentioned pressure relief protection at the same time. both functional and sealing requirements.

SUMMARY OF THE INVENTION

In order to solve one or more of the above technical problems, the present invention provides a novel fluid quick connector.

A fluid quick connector disclosed according to the present invention includes a male end connector assembly and a female end connector assembly, the male end connector assembly can be joined with the female end connector assembly; wherein,

The male end joint assembly includes a male end seat sleeve, a male end piston sleeve, a male end valve body and a male end valve body spring arranged in a male end passage cavity inside the male end piston sleeve, the male end The valve body is connected to the male end piston sleeve through the male end valve body spring, the male end valve body can move back and forth in the axial direction in the male end passage cavity, and the male end piston sleeve and the male end An annular cavity with an open front end is formed between the seat covers;

The male end joint assembly further includes a locking ring, a locking ring spring, and a plurality of locking elements, a plurality of locking through holes are provided on the cavity wall of the male end seat sleeve corresponding to the annular cavity, and the locking ring It is sleeved on the outer side of the male end socket and is connected with the male end socket through the locking ring spring, and the locking ring can be axially on the male end socket between an advanced position and a retracted position. It moves back and forth, in the advanced position, the locking ring covers the locking element and presses it radially into the locking through hole, and in the retracted position the locking ring releases the lock element;

The female end joint assembly includes a female end piston sleeve, and a female end valve body, a female end valve body spring, a female end top rod and a fixed support ring arranged in a female end channel cavity inside the female end piston sleeve; The fixed support ring is fixedly arranged in the female end channel cavity, the rear end of the female end top rod is connected to the fixed support ring by a fixed connection, and the female end valve body can be connected to the female end. The channel cavity moves back and forth along the axial direction around the female end ejector;

When the fluid quick connector is in the engaged state, the front end of the male end piston sleeve pushes the front end surface of the female end valve body and protrudes into the female end channel cavity of the female end piston sleeve and makes the female end The end valve body and the female end ejector are separated to form a fluid channel, and the spring of the female end valve body is in a compressed state; the front end of the female end ejector pushes the front end surface of the male end valve body and extends into the In the male end channel cavity of the male end piston sleeve and separate the male end piston sleeve and the male end valve body to form a fluid channel, the male end valve body spring is in a compressed state; the front end part of the female end piston sleeve extending into the annular cavity between the male end piston sleeve and the male end seat sleeve; and the locking ring is in the advanced position and presses the locking element into the locking through hole and into a locking groove on the outer circumferential surface of the female end piston sleeve, thereby lockingly connecting the male end fitting assembly and the female end fitting assembly.

In the fluid quick connector of an embodiment, preferably, when the fluid quick connector is in a disconnected state, the front end surface of the male end piston sleeve and the front end surface of the male end valve body are flush and in sealing engagement to form a relative The front end face of the male end seat sleeve is axially outwardly convex; the female end valve body is in sealing engagement with the front end of the female end ejector rod and the female end piston sleeve at the same time, and the female end valve The front end surface of the body is flush with the front end surface of the female end ejector rod, thereby forming a second sealing surface that is axially inwardly concave relative to the front end surface of the female end piston sleeve.

In the fluid quick connector of an embodiment, preferably, the fixed connection method of the rear end of the female end top rod relative to the fixed support ring is in the way that the female end top rod is received in the female end channel cavity. A fixed connection that can be automatically disconnected when the hydraulic pressure is greater than or equal to a predetermined pressure value.

In the fluid quick connector of an embodiment, preferably, the fixed connection is a threaded connection.

In the fluid quick connector of an embodiment, preferably, the rear end of the female end ejector rod has a first thread, and the fixed support ring has a second thread that cooperates with the first thread to realize the threaded connection. Thread, by setting one or more of the shape, strength and quantity of the first thread and/or the second thread, so as to realize that the hydraulic pressure in the female end channel cavity by the female end jack is greater than or equal to all When the predetermined pressure value is reached, it can be automatically disengaged from the fixed support ring.

In the fluid quick connector of an embodiment, preferably, when the rear end of the female end top rod is threadedly connected to the fixed support ring, a part of the end face of the rear end of the female end top rod at least abuts against the fixed support ring. on the support ring.

In the fluid quick connector of an embodiment, preferably, the female end connector assembly is mounted on a cooling plate.

In the fluid quick connector of an embodiment, preferably, the front end of the male end valve body has a first sealing ring placement groove, and the first sealing ring is placed in the sealing ring placement groove;

The front end of the female end top rod is provided with a second sealing ring placement groove, and a second sealing ring located between the female end top rod and the female end valve body is placed in the second sealing ring placement groove ;

The inner wall of the female end piston sleeve is provided with a third sealing ring placement groove, and the third sealing ring placement groove is placed in the third sealing ring between the female end top rod and the female end piston sleeve. lock up.

In the fluid quick connector of an embodiment, preferably, during the engagement process of the female end piston sleeve extending into the annular cavity, the annular cavity can guide the female end piston sleeve along the Axial movement.

In the fluid quick connector of an embodiment, preferably, the inner diameter of the front end of the female end piston sleeve is equal to the outer diameter of the female end piston sleeve, and the outer diameter of the front end of the female end piston sleeve is equal to the corresponding The inner diameter dimension of the male end socket of the portion of the annular cavity.

The fluid quick connector of the present disclosure can fix the female end connector assembly on the cooling plate without increasing the complexity of manual operation, and provides the possibility to realize the automatic pressure relief protection of the cooling plate in a low-cost and simple manner, That is to say, the female end joint assembly fixedly installed on the cooling plate can realize the automatic pressure relief protection function at low cost and simply; moreover, the fluid quick joint of the present disclosure is well guided during the joining process, and the male end piston sleeve and the female end are well guided. The valve body, the female end ejector rod and the male end valve body are easily aligned in the axial direction, so the joint quality is higher and the sealing performance in the joint state is also better.

The above features and operation of the present invention will become more apparent from the following description and accompanying drawings.

Description of drawings

The above and other objects and advantages of the present invention will be more fully apparent from the following detailed description taken in conjunction with the accompanying drawings, wherein the same or similar elements are designated by the same reference numerals.

FIG. 1 is a schematic structural diagram of a male end connector assembly of a fluid quick connector according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a female end connector assembly of a fluid quick connector according to an embodiment of the present invention.

3 is a schematic structural diagram of a fluid quick connector in an engaged state according to an embodiment of the present invention.

Detailed ways

For the purposes of brevity and illustration, the principles of the invention are described herein primarily with reference to exemplary embodiments thereof. However, those skilled in the art will readily recognize that the same principles are equally applicable to all types of fluid quick connectors, and that these same principles can be implemented therein, and that any such variations do not depart from the true spirit of this patent application and range. Furthermore, in the following description, reference is made to the accompanying drawings, which illustrate specific exemplary embodiments. Mechanical and structural changes may be made to these embodiments without departing from the spirit and scope of the present invention. Furthermore, although a feature of the invention is disclosed in connection with only one of several implementations/embodiments, this feature may be combined with other implementations as may be desired and/or advantageous for any given or identifiable function / One or more other features of the embodiments are combined. Therefore, the following description should not be taken in a limiting sense, and the scope of the invention is defined by the appended claims and their equivalents.

The drawings illustrate various components that are well-equipped to implement the invention to those skilled in the art, the operation of which will be familiar and obvious to those skilled in the art.

As used herein, the orientation terms "front" and "rear" are defined relative to the mating orientation of the male and female and male sub assemblies; where, with respect to the male, "front" The corresponding orientation is the orientation close to the female end joint assembly, the orientation corresponding to "rear" is the orientation away from the female end joint assembly; for the female end joint assembly, the orientation corresponding to "front" is the orientation close to the male end joint assembly, The corresponding orientation of "rear" is the orientation away from the male end fitting assembly.

Fig. 1 is a schematic structural diagram of a male end fitting assembly of a fluid quick connector according to an embodiment of the present invention; Fig. 2 is a structural schematic diagram of a female end fitting assembly of a fluid quick connector according to an embodiment of the present invention; Fig. 3 Shown is a schematic structural diagram of a fluid quick connector in an engaged state according to an embodiment of the present invention. The male end fitting assembly 100 of the fluid quick connector 10 according to an embodiment of the present invention is provided with locking elements such as a locking ring 151, which are installed on the cooling plate, and the female end fitting assembly 200 is a device installed at the opposite end of the cooling plate. or on the pipeline; the fluid quick connector 10 has an engaged state and a disengaged state. In the engaged state, the male end connector assembly 100 and the female end connector assembly 200 are engaged with each other and form a fluid passage therein, and in the disengaged state, the male end connector assembly 100 and female end fitting assemblies 200 are separated from each other, however, their exposed front faces seal and form a sealing face so that the internal liquid does not leak.

In FIGS. 1 to 3 , the central axis 19 is the central axis of the fluid quick connector 10 , and is also the central axis of the male end connector assembly 100 and the female end connector assembly 200 respectively. The axial direction refers to the direction of the central axis 19 , front and rear. The direction corresponds to the axial direction, and the direction perpendicular to the axial direction corresponds to the radial direction. For ease of understanding, the lower half of the central axis 19 of FIGS. 1-3 illustrates cross-sectional views of certain key components, and the upper half of the central axis 19 of FIGS. 1 to 3 illustrates perspective views of certain critical components.

As shown in FIG. 1 and FIG. 3 , the male end joint assembly 100 has a male end seat sleeve 110 with a relatively large inner diameter; the rear end of the male end seat sleeve 110 can be fixedly connected to a certain device or pipeline, for example, by means of a screw connection. On the liquid path, the rear end 190 of the male end seat sleeve 110 has a through hole for the liquid to circulate in the liquid path; the front end of the male end seat sleeve 110 is open, and the male end seat sleeve 110 may be substantially cylindrical.

The male end joint assembly 100 also has a male end piston sleeve 120, the male end piston sleeve 120 may be substantially cylindrical, and a male end channel cavity 101 is formed inside the male end piston sleeve 120, and the rear end of the male end piston sleeve 120 can be fixed by, for example, screw connection. on the male end housing 110 . The radial dimension of the male end piston sleeve 120 is relatively smaller than the radial dimension of the male end seat sleeve 110. Therefore, an annular cavity 111 with an open front end may be formed between the male end piston sleeve 120 and the male end seat sleeve 110; for example, As shown in FIG. 3 , the annular cavity 111 is for the axial insertion of the female piston sleeve 210 of the female end fitting assembly 200 .

The male end joint assembly 100 also has a male end valve body 130 and a male end valve body spring 140 disposed in the male end passage cavity 101 inside the male end piston sleeve 120; wherein the male end valve body 130 passes through the male end valve body spring 140 is connected to the male end piston sleeve 120, for example, the rear end of the male end valve body spring 140 abuts against the male end piston sleeve 120, and the front end of the male end valve body spring 140 abuts against the male end valve body 130; the male end valve body 130 can The male end passage cavity 101 moves back and forth in the axial direction, that is, the male end valve body 130 may move back and forth in the male end passage cavity 101 similarly to the piston body. When the male end valve body 130 moves backward, the male end valve body spring 140 is compressed to generate a corresponding rebound force, which can automatically restore the male end valve body 130 to the initial position corresponding to the separated state; in this initial position, As shown in FIG. 1 , the inner diameter of the front end of the male end piston sleeve 120 is relatively reduced, and the radial dimension 1 corresponds to the radial dimension of the front end of the male end valve body 130 , so as to achieve a good sealing effect when they are matched. In order to improve the sealing effect and prevent liquid leakage, the front end of the male end valve 130 has a sealing ring placement groove, and a sealing ring 131 (for example, a rubber body sealing ring that is not easy to age) is placed in the sealing ring placement groove, so as to improve the male end valve body 130. The tightness with the front end of the male end piston sleeve 120 .

The male end joint assembly 100 also has a locking assembly, which includes a locking ring 151, a locking ring spring 152, and a plurality of locking elements 153; Through holes 112, the size and number of the locking through holes 112 are designed according to the size and number of the locking elements 153. For example, when the locking elements 153 are spherical lock beads, the locking through holes 112 are designed as circular through holes, and when there is no stopper , the locking element 153 can freely pass through the locking through hole 112 radially.

The locking ring 151 is fitted on the outside of the male end socket 110 and is connected with the male end socket 110 through the locking ring spring 152 . In one embodiment, the locking ring spring 152 is located between the inner side wall of the locking ring 151 and the outer side wall of the male end seat sleeve 110 in the radial direction. The rear end of the ring spring 152 abuts against the spring seat 113 on the outer side of the male end seat sleeve 110 .

The locking ring 151 is axially movable back and forth on the male socket 110 between an advanced position and a retracted position, in which the locking ring 151 covers all the locking elements 153 and presses them radially into the locking passages, respectively. The hole 112, in the retracted position, the locking ring 151 radially releases the locking element 153. Generally, without manual intervention, the locking ring 151 is in its advanced position under the forward force of the locking ring spring 152, such as the position shown in FIG. 1; by manually manipulating the locking ring 151, it is possible to Move it back to the retracted position.

Continuing as shown in FIGS. 2 and 3 , the female end joint assembly 200 has a female end piston sleeve 210 . The female end piston sleeve 210 may be substantially cylindrical, and a female end channel cavity 201 is formed therein. The radial dimension of the female end piston sleeve 210 is larger than the radial dimension of the male end piston sleeve 120. Specifically, the inner diameter of the front end of the female end piston sleeve 210 is substantially equal to the outer diameter of the female end piston sleeve 210. The female end piston sleeve 210 The outer diameter of the front end of the female end is substantially equal to the inner diameter of the male end seat sleeve 110 corresponding to the annular cavity 111, so that in the process of joining, the front end of the female end piston sleeve 210 can be easily inserted into the annular cavity 111 and made The relatively sealed piston movement is beneficial to prevent the liquid in the female end channel cavity 201 from flowing out.

In one embodiment, the rear ends of the female end piston sleeve 210 can be fixedly mounted on the female end seat sleeve 260 of the female end joint assembly 200 , such as by screwing to achieve connection with each other. The rear end 290 of the female end socket 260 can be fixedly connected to, for example, a cooling plate (not shown in the figure) by means of screw connection. The piston sleeve 210 may be substantially cylindrical, and the front end of the female end seat sleeve 260 is open so that the female end piston sleeve 210 may be partially sheathed.

Continuing as shown in FIGS. 2 and 3 , the female end joint assembly 200 further has a female end valve body 220 , a female end valve body spring 230 , a female end valve body spring 230 , a female end valve body Rod 240 and fixed support ring 250 . Wherein, the fixed support ring 250 can be fixedly arranged in the female end channel cavity 201, for example, between the female end seat sleeve 260 and the rear end of the female end piston sleeve 210, when the female end piston sleeve 210 is fitted onto the female end seat When in the sleeve 260, the fixed support ring 250 can be pressed and placed at the same time. The female end valve body spring 230 is arranged axially, for example, its rear end abuts against the support ring 250 or the female end seat sleeve 260 , and its front end abuts against the female end valve body 220 .

The female end jack 240 is fixedly arranged in the female end channel cavity 201 along the central axis 19. The female end jack 240 has a front end, a middle part and a rear end 243. Specifically, the middle part of the jack 240 has a columnar part with a constant shape , the front end of the female end push rod 240 is used to contact and abut against the male end valve body 130 when the male end joint assembly 100 is engaged with the female end joint assembly 200, and the radial dimension of the front end of the female end plunger 240 can be substantially equal to the male end valve Depending on the radial dimension of the front end of the body 130, the front end of the female end jack 240 can be connected to its middle portion through a gradually decreasing diameter portion, and the rear end 243 of the jack 240 is fixedly connected to the fixed support ring 250 by screwing. For example, the rear end 243 of the ejector rod 240 can be machined with a bolt, and the center position of the fixed support ring 250 can be machined with a threaded hole, and the above-mentioned threaded connection can be realized between the bolt and the bolt hole.

The female end valve body 220 can be, for example, a piston body with an annular structure, and the female end valve body 220 can move back and forth in the axial direction around the female end top rod 240 in the female end channel cavity 201 ; When engaged, the front end surface 221 of the female end valve body 220 is pushed back by the front end of the male end piston sleeve 120, and at this time, the female end valve body spring 230 is compressed; when the fluid quick connector 10 is separated, the female end valve body spring The rebound force of 230 can move the female valve body 220 forward to the sealing position as shown in FIG. 2 . In this sealing position, the female end valve body 220 is in sealing engagement with the front end of the female end top rod 240 and the inner wall of the female end piston sleeve 210 at the same time. In order to prevent the female end valve body from continuing to move forward under the action of the rebound force of the female end valve body spring 230 .

In one embodiment, as shown in FIG. 2 and FIG. 3 , the front end of the female end top rod 240 may be provided with a sealing ring mounting groove, which is used to install the sealing ring 241 between the female end top rod 240 and the female end valve body 220 , so as to improve the airtightness between the female end valve body 220 and the female end top rod 240 before installation; at the same time, the inner wall of the female end piston sleeve 210 can also be provided with a sealing ring placement groove, which is used for installing the female end top rod 240 and the female end. The sealing ring 212 between the piston sleeves 210 is used to improve the airtightness between the female end valve body 220 and the inner wall of the female end piston sleeve 210 . It should be understood that, in the engagement state of the fluid quick connector 10 as shown in FIG. 3 , the sealing ring 212 also improves the tightness between the outer wall of the male end piston sleeve 120 and the inner wall of the female end piston sleeve 210 .

It should be noted that the inner diameter of the female end valve body 220 may be set corresponding to the outer diameter of the front end of the female end ejector rod 240 , and the outer diameter of the female end valve body 220 may correspond to the outer diameter of the front end of the female end piston sleeve 210 . Diameter size settings can improve their tightness by controlling their machining accuracy, etc.

In order to realize the locking of the fluid quick connector 10 in the engaged state, a locking groove 211 is provided on the outer circumferential surface of the female end piston sleeve 210 .

When the fluid quick connector 10 is in the disconnected state (as shown in FIGS. 1 and 2 ), the front end face 122 of the male end piston sleeve 120 and the front end face 132 of the male end valve body 130 are substantially flush, and the male end piston sleeve 120 is sealingly engaged with the male end valve body 130, thereby forming a first sealing surface 23 that is axially outwardly convex relative to the front end surface of the male end seat sleeve 110; correspondingly, the female end valve body 220 is pushed back by the female end valve body spring 230 At its sealing position, the female end valve body 220 is in sealing engagement with the front end of the female end ejector rod 240 and the female end piston sleeve 210 at the same time, and the front end face 221 of the female end valve body 220 is flush with the front end face 240 of the female end ejector rod 230, Thus, a second sealing surface 42 that is axially inwardly concave relative to the front end surface of the female end piston sleeve 210 is formed. In this way, in the separated state, both the male end fitting assembly 100 and the female end fitting assembly 200 can achieve sealing.

When the fluid quick connector 10 is in the engaged state (as shown in FIG. 3 ), the front end of the male end piston sleeve 120 pushes the front end surface of the female end valve body 220 to the left and extends into the female end channel cavity 201 of the female end piston sleeve 210 and separate the front end surface 221 of the female end valve body 220 from the front end surface 242 of the female end ejector rod 230 to form a fluid channel (as shown by the double-headed arrow in FIG. 3 ). At this time, the female end valve body spring 230 is in the At the same time, the front end of the female end ejector rod 240 pushes the front end surface 132 of the male end valve body 130 to the right and extends into the male end channel cavity 101 of the male end piston sleeve 120 and causes the front end surface of the male end piston sleeve 120 122 and the front end face 132 of the male end valve body 130 are separated to form a fluid passage, at this time, the male end valve body spring 140 is in a compressed state; and the front end of the female end piston sleeve 210 partially extends into the male end piston sleeve 120 and In the annular cavity 111 between the male end housing 110 ; and the locking ring 151 is in the advanced position, which presses the locking element 153 into the locking through hole 112 and the locking groove 211 of the female piston sleeve 210 , thereby lockingly connecting the male end fitting assembly 100 with the female end fitting assembly 200 .

The fluid quick connector 10 of the above embodiment can realize the fixed installation of the female end connector assembly 200 on the cooling plate, and can also facilitate the connection and separation operations. For example, during the connection, the locking ring 151 can be manually retracted. At the position, the female end fitting assembly 200 and the male end fitting assembly 100 are aligned, that is, the first sealing surface 23 and the second sealing surface 42 are aligned and engaged, and then pushed toward each other until the locking element 153 falls into the locking groove 211 In the middle, the locking ring 151 will return to the forward position under the action of the spring force of the locking spring 152, and the whole process is easy to operate; when separating, the locking ring 151 can also be manually returned to its retracted position, and then the female end joint assembly 200 and the male end fitting assembly 100 are pulled away from each other and the locking element 153 automatically leaves the locking groove 211 at the same time. All of the above engagement and disengagement operations can be done with one hand.

Moreover, it will be understood that the fixed installation of the female end joint assembly 200 on the cooling plate facilitates the simple realization of the pressure relief protection function requirement of the cooling plate (usually the end where the cooling plate is located requires an automatic pressure relief protection function).

In the structure of the existing male end joint assembly or the present application, in order to realize the sealing engagement between the male end valve body 130 and the male end piston sleeve 120, the male end valve body 130 is restricted from being separated from the male end piston sleeve 120, That is to say, it is not allowed to rush forward under the action of internal high pressure. In the quick connector named "Quick Connector Assembly" with Chinese Patent Application No. 201410775061.5, in order to realize the automatic pressure relief function of the male end, it is necessary to set a relief valve on the valve body of the male end. Therefore, the male valve body becomes extremely complicated, and in order to ensure that the liquid will not leak through the pressure relief channel under normal use, the processing accuracy of the male valve body is high. The manufacturing cost of the male valve body is greatly increased.

For comparison, the female end joint assembly 200 according to an embodiment of the present disclosure can realize the automatic pressure relief protection function in a low cost and simple manner through the destructive fixed connection between the female end top rod 230 and the fixed support ring 250 . Specifically, the threaded connection of the rear end 243 of the female end jack 240 to the fixed support ring 250 adopts a connection that automatically disengages when the female jack 240 is subjected to the hydraulic pressure F in the female end channel cavity 201 greater than or equal to a predetermined pressure value manner, for example, the predetermined pressure value can be predetermined, by setting the shape, strength and/or number of threads of the bolts on the rear end 243 of the female end jack 240, or by fixing the threads in the threaded holes on the support ring 250 The connection strength of the threaded connection between the female end top rod 230 and the fixed support ring 250 is set by the shape, strength and/or quantity, or a combination of the above two methods.

When the female end joint assembly 200 of the above example is installed on the cooling plate in the separated state, if the pressure of the liquid flow circuit inside the cooling plate increases sharply due to abnormal factors such as temperature increase, the female end jack 240 will be affected by When the forward pressure F is greater than or equal to the predetermined pressure value, the rear end 243 of the female end ejector rod 240 will be disengaged from the fixed support ring 250, the liquid flow circuit is opened, and the liquid can flow from the female end ejector rod 240 and the female end valve body 220. The gap between them flows out to realize the pressure relief function and prevent the expensive cooling plate from being damaged by internal blasting.

It will be appreciated that although the female jack 240 and/or the fixed support ring 250 are susceptible to damage during automatic pressure relief, on the one hand, pressure relief protection generally occurs relatively rarely; on the other hand, the female jack 240 And/or the fixed support ring 250 can be replaced at low cost and low cost, and the female end fitting assembly 200 can continue to be used. Therefore, the cost of realizing pressure relief protection is low.

It should be noted that, when the pressure relief protection of the cooling plate is realized above, the fixed connection method between the rear end 243 of the female end top rod 240 in the female end joint assembly 200 and the fixed support ring 250 is a threaded connection method as an example to illustrate However, those skilled in the art will understand that under the teachings of the above embodiments, in other embodiments, the fixed connection between the rear end 243 of the female end top rod 240 and the fixed support ring 250 can also be implemented as, for example, an adhesive connection (By determining the strength value of the stick and connection, it will be automatically disengaged when the hydraulic pressure F in the female end channel cavity 201 is greater than or equal to the predetermined pressure value), for example, the snap connection (by determining the strength value of the snap connection, the It is automatically disengaged when the hydraulic pressure F in the female end channel cavity 201 is greater than or equal to a predetermined pressure value) and other fixed connection methods.

It will be understood that the above-mentioned predetermined pressure value can be adjusted and changed in design, for example, it can be determined according to the pressure level that the cooling plate can bear.

In one embodiment, when the rear end of the female end top rod 240 is threadedly connected to the fixed support ring 250 , a part of the end surface of the rear end 243 of the female end top rod 240 at least abuts on the fixed support ring 250 , such as the rear end 243 . Part of the stepped surface is in contact with the surface of the fixed support ring 250, and the rear end surface of the rear end 243 is in contact with the threaded hole of the fixed support ring 250, so that, in the normal engagement process or engagement state, it can prevent, for example, the male end valve body spring 140. The spring force will be fully transmitted to the above-mentioned threaded connection or fixed connection through the male valve body 130 and the female end top rod 240, so as to reduce the damage to the strength of the threaded connection or fixed connection, and reduce or eliminate the following negative effects: for example, the threaded connection Or other fixed connections are automatically disengaged when the hydraulic pressure F in the female end channel cavity 201 is less than a predetermined pressure value, which affects the normal realization of the pressure relief protection function.

It should be noted that the fluid quick connector 10 of the above embodiment also has the following advantages. As shown in FIG. 3 , during the joining process, the female end piston sleeve 210 is inserted into the annular cavity 111 , and the annular cavity 111 can guide the The female end piston sleeve 210 moves back and forth in the correct direction (eg, the axial direction), the male end piston sleeve 120 and the female end valve body 220 are aligned in the axial direction, and the female end top rod 240 and the male end valve body 130 are axially aligned The upward alignment is also better, so that the tightness in the engaged state is also better; and, in the engaged state, the male end socket 110 corresponding to forming the annular cavity 111 can be used for the key parts of the joint (eg The female end piston sleeve 210, the male end piston sleeve 120, the inner male end valve body 130 and the female end ejector rod 240, etc.) provide protection from external shocks such as in the radial direction; and, in the engaged state, The female end piston sleeve 210 will be subjected to the radial pressure toward the center of the locking element 153, and the pressure can be partially transmitted to the male end piston sleeve 120 or the female end valve body 220, which is beneficial to improve the female end piston sleeve 210 and the male end piston sleeve 120. / The tightness of the female end valve body 220 further prevents liquid leakage.

It will be understood that the fluid quick connector 10 (eg its male end connector assembly 100 ) of the embodiment of the present invention may slightly increase in size in the radial direction, but the overall size in the axial direction does not increase, and the structure is still relatively compact. In addition, the fluid quick connector 10 of the embodiment of the present invention does not sacrifice other performances compared to the quick connector disclosed in the prior art, for example, good connection reliability, good sealing performance, and quick connection can be realized.

The above examples mainly illustrate the fluid quick connector 10 of the present invention. Although only a few of these embodiments of the present invention have been described, it will be understood by those of ordinary skill in the art that the present invention may be embodied in many other forms without departing from the spirit and scope thereof. Accordingly, the examples and embodiments shown are to be regarded as illustrative and not restrictive, and various modifications are possible within the present invention without departing from the spirit and scope of the invention as defined by the appended claims. with replacement.

Claims (10)

1. A fluid quick connector (10), comprising a male end connector assembly (100) and a female end connector assembly (200), the male end connector assembly (100) being capable of being engaged with the female end connector assembly (200) on together; characterized by, The male end joint assembly (100) includes a male end seat sleeve (110), a male end piston sleeve (120), and a male end channel cavity (101) provided inside the male end piston sleeve (120) A male end valve body (130) and a male end valve body spring (140), the male end valve body (130) is connected to the male end piston sleeve (120) through the male end valve body spring (140), so The male end valve body (130) can move back and forth in the axial direction in the male end passage cavity (101), and a front end thereof is formed between the male end piston sleeve (120) and the male end seat sleeve (110). an open annular cavity (111); The male end joint assembly (100) further comprises a locking ring (151), a locking ring spring (152), a plurality of locking elements (153), and the corresponding annular cavity (153) of the male end seat sleeve (110) The cavity wall of 111) is provided with a plurality of locking through holes (112), the locking ring (151) is sleeved on the outer side of the male end seat sleeve (110) and is connected with the locking ring spring (152) through the locking ring spring (152). A male end socket (110) is connected, and the locking ring (151) is axially movable back and forth on the male end socket (110) between an advanced position and a retracted position, in which the advanced position, The locking ring (151) covers the locking element (153) and presses it radially into the locking through hole (112), in the retracted position the locking ring (151) releases the locking element (153); The female end joint assembly (200) includes a female end piston sleeve (210), and a female end valve body (220) arranged in a female end channel cavity (201) inside the female end piston sleeve (210), A female end valve body spring (230), a female end top rod (240) and a fixed support ring (250); the fixed support ring (250) is fixedly arranged in the female end channel cavity (201), and the female end The rear end (243) of the top rod (240) is connected to the fixed support ring (250) through a fixed connection, and the female end valve body (220) can surround the the female end ejector rod (240) moves back and forth along the axial direction; When the fluid quick connector (10) is in the engaged state, the front end of the male end piston sleeve (120) pushes the front end surface (221) of the female end valve body (220) and protrudes into the female end piston In the female end channel cavity (201) of the sleeve (210) and the female end valve body (220) and the female end ejector rod (240) are separated to form a fluid channel, the female end valve body spring (230) is in Compressed state; the front end of the female end ejector rod (240) pushes the front end surface (132) of the male end valve body (130) and extends into the male end passage cavity (101) of the male end piston sleeve (120) ) and separate the male end piston sleeve (120) and the male end valve body (130) to form a fluid channel, the male end valve body spring (140) is in a compressed state; the female end piston sleeve (210) ) partially protrudes into the annular cavity (111) between the male end piston sleeve (120) and the male end seat sleeve (110); and the locking ring (151) is located in the advance position and press the locking element (153) into the locking through hole (112) and the locking groove (211) on the outer circumferential surface of the female piston sleeve (210), thereby locking the male An end fitting assembly (100) is lockingly connected to the female end fitting assembly (200). 2. The fluid quick connector (10) according to claim 1, characterized in that, when the fluid quick connector (10) is in a separated state, the front end face (122) of the male end piston sleeve (120) and the The front end face (132) of the male end valve body (130) is flush and in sealing engagement so as to form a first sealing surface that is axially outwardly convex relative to the front end face of the male end seat sleeve (110); the female end valve body (110) 220) is in sealing engagement with the front end of the female end ejector rod (240) and the female end piston sleeve (210) at the same time, and the front end face (221) of the female end valve body (220) and the female end ejector rod ( The front end surface (242) of 230) is flush, thereby forming a second sealing surface that is axially inwardly concave relative to the front end surface of the female end piston sleeve (210). 3. The fluid quick connector (10) according to claim 1, characterized in that, the fixed connection method of the rear end (243) of the female end ejector rod (240) relative to the fixed support ring (250) is by using A fixed connection that can be automatically disengaged when the female end jack (240) is subjected to a hydraulic pressure in the female end channel cavity (201) that is greater than or equal to a predetermined pressure value. 4. The fluid quick connector (10) according to claim 3, characterized in that, the fixed connection mode is a threaded connection mode. 5. The fluid quick connector (10) according to claim 4, wherein the rear end (243) of the female end ejector rod (240) has a first thread, and the fixed support ring (250) has a The first thread is matched to realize the second thread of the threaded connection, and by setting one or more of the shape, strength and quantity of the first thread and/or the second thread, to realize the top of the female end The rod (240) can automatically disengage from the fixed support ring (250) when the hydraulic pressure in the female end channel cavity (201) is greater than or equal to the predetermined pressure value. 6. The fluid quick connector (10) according to claim 4, characterized in that, when the rear end (243) of the female end top rod (240) is threadedly connected to the fixed support ring (250), the A part of the end surface of the rear end (243) of the female end ejector rod (240) at least abuts against the fixed support ring (250). 7. The fluid quick connector (10) of claim 1, wherein the female end connector assembly (200) is mounted on a cooling plate. 8. The fluid quick connector (10) according to claim 1, characterized in that, The front end of the male valve body (130) is provided with a first sealing ring placement groove, and a first sealing ring (131) is placed in the sealing ring placement groove; The front end of the female end top rod (240) is provided with a second sealing ring placement groove, and a second sealing ring placement groove is placed in the female end top rod (240) and the female end valve body ( 220) between the second sealing ring (241); A third sealing ring placement groove is provided on the inner wall of the female end piston sleeve (210), and a third sealing ring placement groove is placed in the female end top rod (240) and the female end piston sleeve. A third sealing ring (212) between (210). 9. The fluid quick connector (10) according to claim 1, characterized in that, during the engagement process of the female end piston sleeve (210) extending into the annular cavity (111), the ring The hollow-shaped cavity can guide the female end piston sleeve (210) to move in the axial direction. 10. The fluid quick connector (10) according to claim 9, wherein the inner diameter of the front end of the female end piston sleeve (210) is equal to the outer diameter of the female end piston sleeve (210), so The outer diameter of the front end of the female end piston sleeve (210) is equal to the inner diameter of the male end seat sleeve (110) of the portion corresponding to the annular cavity (111).