CN216242779U - Quick connector - Google Patents

Abstract

The utility model aims to provide a quick connector which is simple in structure, convenient to mount and dismount, capable of simplifying connection steps and improving connection tightness. The quick-connection plug comprises a nut piece, a screw rod piece, a clamping sleeve and at least one clamping block; the nut piece is sleeved on the pipe joint; the screw rod piece is connected with the nut piece and is communicated with a pipe joint positioned in the nut piece; the clamping sleeve is arranged in the nut piece and sleeved on the pipe joint; the clamping block is movably arranged in the nut piece along the radial direction of the nut piece; the clamping block is adapted to abut a collet located within the nut member to deform the collet and clamp the pipe joint. The quick connector is simple in structure, convenient to install and detach, capable of simplifying connection steps and improving connection tightness.

Description

Quick connector

Technical Field

The utility model relates to the technical field of fuel cell detection, in particular to a quick connector.

Background

When the air tightness of the galvanic pile is detected, a pipe joint of the galvanic pile is required to be connected with an air pipe, the air pipe generally adopts a hose, the inner diameter of the air pipe is slightly larger than the outer diameter of the pipe joint of the galvanic pile, and after the air pipe is connected with the pipe joint of the galvanic pile, the connection part of the air pipe is fastened by a hose clamp (an iron wire) and the like, so that the air leakage during the air tightness detection is prevented.

The sealing mode can not ensure that the air pipe is tightly attached to the pipe joint and is inconvenient to use; when the air pipe is inflated, gas leakage is easy to occur, so that an air tightness detection result is inaccurate, and the air tightness of the galvanic pile cannot be accurately judged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a quick connector which is simple in structure, convenient to mount and dismount, capable of simplifying connection steps and improving connection tightness.

The embodiment of the utility model is realized by the following steps:

the utility model provides a quick connector which comprises a nut member, a screw member, a clamping sleeve and at least one clamping block, wherein the nut member is fixedly connected with the clamping sleeve;

the nut piece is sleeved on the pipe joint; the screw rod piece is connected with the nut piece and is communicated with a pipe joint positioned in the nut piece; the clamping sleeve is arranged in the nut piece and sleeved on the pipe joint;

the clamping block is movably arranged in the nut piece along the radial direction of the nut piece; the clamping block is adapted to abut a collet located within the nut member to deform the collet and clamp the pipe joint.

In an optional embodiment, the nut member is provided with a first channel and a second channel along the axial direction of the nut member, the first channel is communicated with the second channel, and the axial lines of the first channel and the second channel are overlapped;

the pipe joint, the clamping sleeve and the clamping block are all accommodated in the first channel;

the screw rod is in threaded connection with the second channel.

In an alternative embodiment, the quick-connect coupling further comprises a connecting stud;

the inner wall of the first channel is provided with at least one accommodating groove, and the clamping block is matched with the accommodating groove in a sliding manner along the radial direction of the nut piece;

the bottom of the accommodating groove is provided with a first through hole, and the connecting stud is in threaded connection with the first through hole and is connected with the clamping block;

the connecting stud is used for rotating relative to the first through hole under the action of external force so as to drive the clamping block to slide relative to the accommodating groove along the radial direction of the nut piece.

In an alternative embodiment, the quick-connect coupling further comprises a coupling nut coupled to the clamping block and cooperating with the coupling stud.

In an optional embodiment, the clamping block is provided with a mounting groove and a second through hole communicated with the mounting groove; the mounting groove extends along the axial direction of the nut piece, and the second through hole extends along the radial direction of the nut piece;

the connecting nut is accommodated in the mounting groove, and the connecting stud is connected with the nut through the second through hole.

In an alternative embodiment, the first through hole is a strip-shaped hole, and the strip-shaped hole and the mounting groove together form a T-shaped groove.

In an optional embodiment, the nut member is provided with a via hole, the via hole is located between the first channel and the second channel, and the via hole conducts the first channel and the second channel;

the through hole extends along the axis of the first channel, and the inner diameter of the through hole is smaller than the inner diameters of the first channel and the second channel.

In an optional embodiment, one end of the screw rod piece, which is used for being connected with the nut piece, is provided with a third channel and an air guide hole communicated with the third channel;

the third channel is communicated with the second channel, and the air guide hole is used for being connected with a pneumatic connector of an external air pipe.

In an alternative embodiment, the inner diameter of the jacket gradually decreases from one end to the other end in the axial direction thereof, and the outer circumferential surface of the jacket is opened in the axial direction thereof.

In an optional embodiment, the quick-connect coupling further comprises a first seal ring, a second seal ring and a third seal ring;

the first sealing ring is positioned between the pipe joint and the nut piece;

the second sealing ring is positioned between the nut piece and the jacket;

the third sealing ring is positioned between the screw rod piece and the nut piece.

The embodiment of the utility model has the beneficial effects that:

the quick-connection plug comprises a nut member, a screw member, a clamping sleeve and at least one clamping block; the nut piece is sleeved on the pipe joint; the screw rod piece is connected with the nut piece and is communicated with a pipe joint positioned in the nut piece; the clamping sleeve is arranged in the nut piece and sleeved on the pipe joint; and the clamping block is movably arranged in the nut piece along the radial direction of the nut piece, and the clamping block is used for being abutted to a clamping sleeve positioned in the nut piece, so that the clamping block can drive the clamping sleeve sleeved on the pipe joint to move towards the direction close to the pipe joint through the movement of the clamping block relative to the nut piece, and further the clamping sleeve deforms and clamps the pipe joint. Therefore, the sealing performance of the joint of the quick-connection plug and the pipe joint is improved in a mode of clamping the pipe joint through the jacket, and the air leakage condition is avoided; and when the deformation force of the clamping block on the jacket disappears, the jacket can return to the original shape, so that the inner diameter of the jacket is increased, the jacket can be separated from the pipe joint, and the quick-connect plug can be conveniently taken down from the pipe joint.

In conclusion, the quick connector is simple in structure, convenient to install and disassemble, capable of simplifying connecting steps and improving connection tightness.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is an exploded view of a quick connector according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the connection between the quick connector and the stack according to the embodiment of the present invention;

FIG. 3 is a cross-sectional view of a quick connector and a stack according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a quick connector according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a nut member in an embodiment of the utility model;

FIG. 6 is a cross-sectional view of a nut member in an embodiment of the utility model;

FIG. 7 is a schematic view of the connection of the clamping block to the coupling nut in an embodiment of the present invention;

FIG. 8 is a schematic structural view of a clamping block in an embodiment of the utility model;

FIG. 9 is a schematic structural diagram of a screw member according to an embodiment of the present invention;

FIG. 10 is a cross-sectional view of a screw member according to an embodiment of the present invention;

FIG. 11 is a schematic view of a jacket structure in an embodiment of the present invention.

The icon is 100-quick connector; 200-electric pile; 110-nut member; 120-screw member; 130-jacket; 140-a clamping block; 210-a pipe joint; 111-a first channel; 112-a second channel; 150-connecting studs; 113-a receiving groove; 114 — a first via; 160-coupling nut; 141-a mounting groove; 142-a second via; 115-via holes; 121-a third channel; 122-gas-guide holes; 131-an opening; 171-a first sealing ring; 172-a second seal ring; 173-third sealing ring.

Detailed Description

In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, fig. 1 and 4 show the structure of a quick connector according to an embodiment of the present invention, and fig. 2 and 3 show the structure of a quick connector and a stack according to an embodiment of the present invention; the present embodiment provides a quick connector 100, the quick connector 100 includes a nut member 110, a screw member 120, a collet 130, and at least one clamping block 140;

the nut member 110 is used for sleeving the pipe joint 210; the screw member 120 is connected to the nut member 110 and communicates with a pipe joint 210 located in the nut member 110; the clamping sleeve 130 is arranged in the nut member 110 and sleeved on the pipe joint 210;

the clamping block 140 is movably disposed in the nut member 110 in a radial direction of the nut member 110; the clamping block 140 is used to abut the collet 130 located within the nut member 110 to deform the collet 130 and clamp the pipe joint 210.

The working principle of the quick connector 100 is as follows:

referring to fig. 1-4, the quick connector 100 includes a nut member 110, a screw member 120, a collet 130, and at least one clamping block 140; the nut member 110 is used for sleeving the pipe joint 210; the screw member 120 is connected to the nut member 110 and communicates with a pipe joint 210 located in the nut member 110; the clamping sleeve 130 is arranged in the nut member 110 and sleeved on the pipe joint 210; the clamping block 140 is movably disposed in the nut member 110 along the radial direction of the nut member 110, and the clamping block 140 is used for abutting against the clamping sleeve 130 disposed in the nut member 110, so that the clamping sleeve 130 sleeved on the pipe joint 210 can be driven to move towards the pipe joint 210 by the movement of the clamping block 140 relative to the nut member 110, and the clamping sleeve 130 deforms and clamps the pipe joint 210. Therefore, the tightness of the joint of the quick connector 100 and the pipe joint 210 is improved in a mode that the pipe joint 210 is clamped by the jacket 130, and the condition of air leakage is avoided; and when the deformation force of the clamping block 140 applied to the collet 130 disappears, the collet 130 can return to the original shape, so that the inner diameter of the collet 130 is increased, the collet 130 can be separated from the pipe joint 210, and the quick connector 100 can be conveniently taken down from the pipe joint 210.

In conclusion, the quick connector 100 has a simple structure, is convenient to assemble and disassemble, and can simplify the connection steps and improve the connection tightness. And the quick-connect connector 100 can be applied to a fuel cell stack 200 airtightness detection device to realize the butt joint of an external air pipe and the pipe joint 210 of the stack 200.

Note that, in the present embodiment, first, a plurality of clamping blocks 140 may be provided around the axis of the nut member 110 to improve the stability of clamping by the collet 130, thereby ensuring sealability; however, the present embodiment adopts an arrangement manner of arranging two clamping blocks 140, and since the structures and the working principles of the two clamping blocks 140 are the same, the following description will be made on the structure and the working process of one of the clamping blocks 140;

secondly, when the collet 130 is arranged, in order to enable the collet 130 to be deformed under the action of the clamping block 140, the inner diameter of the collet 130 can be reduced, so that the collet 130 can be clamped on the pipe joint 210 due to the reduction of the inner diameter; moreover, in case that the external force action of the clamping block 140 on the collet 130 is lost, the collet 130 may be restored to the original shape, thereby enabling the inner diameter to be increased to be separated from the pipe joint 210; therefore, the jacket 130 may be made of a material having a strong recovery capability.

Further, referring to fig. 1-6, fig. 5 and 6 show the structure of the nut member in the embodiment of the present invention, in this embodiment, when the nut member 110 is disposed, in order to enable the nut member 110 to be abutted against the screw member 120 and the pipe joint 210, and an end abutted against the pipe joint 210 to accommodate the jacket 130, the nut member 110 is provided with a first channel 111 and a second channel 112 along an axial direction thereof, the first channel 111 is communicated with the second channel 112, and axes of the first channel 111 and the second channel 112 are overlapped; the pipe joint 210, the jacket 130 and the clamping block 140 are all accommodated in the first channel 111; the screw member 120 is threadedly coupled to the second passage 112.

Moreover, in order to prevent the screw member 120 located in the second channel 112 from extending into the first channel 111 and affecting the fit between the pipe joint 210 and the jacket 130, the nut member 110 is provided with a via hole 115, the via hole 115 is located between the first channel 111 and the second channel 112, and the via hole 115 conducts the first channel 111 and the second channel 112; the leading through hole 115 extends along the axis of the first passage 111, and the leading through hole 115 has an inner diameter smaller than the inner diameters of the first and second passages 111 and 112. In this way, the through hole 115 communicates the first passage 111 and the second passage 112, and at the same time, isolates the jacket 130 and the pipe joint 210 in the first passage 111 from the screw member 120 in the second passage 112, thereby preventing the screw member 120 from extending into the first passage 111 to affect the fit between the pipe joint 210 and the jacket 130.

Further, referring to fig. 1-6, in the present embodiment, in order to drive the clamping block 140 to move in the nut member 110, the quick-connect coupling 100 further includes a connecting stud 150; at least one accommodating groove 113 is formed in the inner wall of the first channel 111, and the clamping block 140 is slidably matched with the accommodating groove 113 along the radial direction of the nut member 110; a first through hole 114 is formed at the bottom of the accommodating groove 113, and the connecting stud 150 is in threaded connection with the first through hole 114 and is connected with the clamping block 140; the connecting stud 150 is configured to rotate relative to the first through hole 114 under the action of an external force, so as to drive the clamping block 140 to slide relative to the receiving groove 113 along the radial direction of the nut member 110.

Therefore, the connecting stud 150 can be driven to rotate relative to the first through hole 114 on the nut member 110 by rotating the connecting stud 150 outside the nut member 110, so that the connecting stud 150 can relatively extend into the first channel 111 or extend out of the second channel 112, the clamping block 140 can press the jacket 130 to clamp the pipe joint 210 when the connecting stud 150 relatively extends into the first channel 111, and the clamping block 140 can press the jacket 130 to separate from the pipe joint 210 when the connecting stud 150 relatively extends out of the first channel 111.

Further, referring to fig. 1-8, fig. 7 and 8 show structures of a clamping block and a connecting nut in an embodiment of the present invention, in the embodiment, the quick-connect coupling 100 further includes a connecting nut 160, and the connecting nut 160 is connected to the clamping block 140 and is engaged with the connecting stud 150. The clamping block 140 is provided with a mounting groove 141 and a second through hole 142 communicated with the mounting groove 141; the mounting groove 141 extends in the axial direction of the nut member 110, and the second through hole 142 extends in the radial direction of the nut member 110; the connection nut 160 is received in the mounting groove 141, and the connection stud 150 is connected to the nut through the second through hole 142.

Therefore, by installing the connecting nut 160 matched with the connecting stud 150 on the clamping block 140, the clamping block 140 can be driven to move synchronously when the connecting stud 150 extends into or out of the first channel 111 relative to the nut hole; moreover, since the connection nut 160 and the connection stud 150 are in threaded fit, when the rotation nut rotates, the connection nut 160 moves relative to the connection stud 150, so as to drive the clamping block 140 to move along the radial direction of the nut member 110, and the movement of the connection nut 160 is synchronous and in the same direction as the movement of the connection stud 150; that is, when the connecting stud 150 starts to rotate, the connecting nut 160 and the clamping block 140 are driven to move by the movement of the connecting stud 150 relative to the nut member 110, and simultaneously, the connecting nut 160 is driven to move relative to the connecting stud 150 by the rotation of the connecting stud 150 relative to the connecting nut 160, so that the moving speed of the clamping block 140 can be increased, and the clamping block 140 can rapidly clamp the pipe joint 210 or rapidly separate from the pipe joint 210. In the embodiment, to facilitate the connection between the connection nut 160 and the connection stud 150, the first through hole 114 is a strip-shaped hole, and the strip-shaped hole and the mounting groove 141 together form a T-shaped groove.

Further, referring to fig. 1-10, fig. 9 and 10 show the structure of the screw member in the embodiment of the present invention, in the embodiment, in order to facilitate the butt joint of the screw member 120 and the external air pipe, a third channel 121 and an air vent 122 communicated with the third channel 121 are disposed at one end of the screw member 120 for connecting with the nut member 110; the third passage 121 communicates with the second passage 112, and the air-guide hole 122 is used for connecting with a pneumatic connector of an external air pipe.

Referring to fig. 1 to 11, fig. 11 shows a structure of a collet according to an embodiment of the present invention, in this embodiment, in order to enable the inner diameter of the collet 130 to gradually decrease after abutting against the pipe joint 210 in a process that the collet 130 moves relative to the first passage 111 under the action of the clamping block 140, one end of the inner diameter of the collet 130 along the axial direction thereof gradually decreases toward the other end thereof, and the outer circumferential surface of the collet 130 is provided with an opening 131 along the axial direction thereof. That is, the collet 130 has a shape corresponding to the stopper portion first passage 111, and since the outer peripheral surface of the collet 130 has the opening 131 opened along the axial direction thereof, when the inner diameter thereof is reduced, the portion of the collet 130 at the opening 131 is gradually abutted, so that the opening 131 is eliminated, and the amount of deformation of the collet 130 is reduced and the sealing property is improved.

Meanwhile, in order to improve the sealing performance between the pipe joint 210 and the nut member 110, the sealing performance between the screw member 120 and the jacket 130, and the sealing performance between the screw member 120 and the nut member 110, the quick-connect coupling 100 further includes a first sealing ring 171, a second sealing ring 172, and a third sealing ring 173; the first seal ring 171 is located between the pipe joint 210 and the nut member 110; a second seal ring 172 is located between the nut member 110 and the collet 130; a third seal 173 is located between the screw member 120 and the nut member 110.

In summary, referring to fig. 1 to 11, when the quick connector 100 is used, the steps are as follows:

firstly, the connecting nut 160 is placed in the mounting groove 141 of the clamping block 140;

subsequently, the clamping block 140 is placed in the receiving groove 113 such that the axis of the coupling nut 160 coincides with the axis of the first through hole 114;

then the connecting stud 150 is installed;

sleeving the clamping sleeve 130 and the nut member 110 on the pipe joint 210, rotating the connecting stud 150, screwing the connecting stud 150, and connecting the screw member 120 with the nut member 110;

the screw member 120 is butted against an external air pipe;

and blowing air to the electric pile 200 through an external air pipe so as to detect the air tightness of the electric pile 200.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A quick connector is characterized in that:

the quick-connection plug comprises a nut piece, a screw rod piece, a clamping sleeve and at least one clamping block;

the nut piece is sleeved on the pipe joint; the screw rod piece is connected with the nut piece and is communicated with the pipe joint positioned in the nut piece; the clamping sleeve is arranged in the nut piece and sleeved on the pipe joint;

the clamping block is movably arranged in the nut piece along the radial direction of the nut piece; the clamping block is used for abutting against the clamping sleeve positioned in the nut piece so as to enable the clamping sleeve to deform and clamp the pipe joint.

2. The quick connect coupling of claim 1, wherein:

the nut piece is provided with a first channel and a second channel along the axis direction, the first channel is communicated with the second channel, and the axes of the first channel and the second channel are overlapped;

the pipe joint, the jacket and the clamping block are all accommodated in the first channel;

the screw rod is in threaded connection with the second channel.

3. The quick connect coupling of claim 2, wherein:

the quick-connection connector also comprises a connecting stud;

the inner wall of the first channel is provided with at least one accommodating groove, and the clamping block is matched with the accommodating groove in a sliding manner along the radial direction of the nut piece;

the bottom of the accommodating groove is provided with a first through hole, and the connecting stud is in threaded connection with the first through hole and is connected with the clamping block;

the connecting stud is used for rotating relative to the first through hole under the action of external force so as to drive the clamping block to slide relative to the accommodating groove along the radial direction of the nut piece.

4. The quick connect coupling of claim 3, wherein:

the quick-connection connector further comprises a connecting nut, and the connecting nut is connected with the clamping block and matched with the connecting stud.

5. The quick connect coupling of claim 4, wherein:

the clamping block is provided with a mounting groove and a second through hole communicated with the mounting groove; the mounting groove extends along the axial direction of the nut member, and the second through hole extends along the radial direction of the nut member;

the connecting nut is accommodated in the mounting groove, and the connecting stud is connected with the nut through the second through hole.

6. The quick connect coupling of claim 5, wherein:

the first through hole is a strip-shaped hole, and the strip-shaped hole and the mounting groove jointly form a T-shaped groove.

7. The quick connect coupling of claim 2, wherein:

the nut piece is provided with a via hole, the via hole is positioned between the first channel and the second channel, and the via hole conducts the first channel and the second channel;

the via extends along an axis of the first channel, and an inner diameter of the via is smaller than inner diameters of the first channel and the second channel.

8. The quick connect coupling of claim 2, wherein:

one end of the screw rod piece, which is used for being connected with the nut piece, is provided with a third channel and an air guide hole communicated with the third channel;

the third channel is communicated with the second channel, and the air guide hole is used for being connected with a pneumatic connector of an external air pipe.

9. The quick connector as claimed in any one of claims 1 to 8, wherein:

the inner diameter of the jacket is gradually reduced from one end to the other end along the axis direction of the jacket, and an opening is formed in the peripheral surface of the jacket along the axis direction of the jacket.

10. The quick connector as claimed in any one of claims 1 to 8, wherein:

the quick-connection plug also comprises a first sealing ring, a second sealing ring and a third sealing ring;

the first sealing ring is positioned between the pipe joint and the nut piece;

the second sealing ring is positioned between the nut piece and the jacket;

the third seal ring is located between the screw member and the nut member.

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