CN211536025U - Quick connector and medicine injection booster - Google Patents

Abstract

A quick connector and a medicine injection booster are provided, wherein the quick connector comprises a clamping piece, a first sliding piece, a second sliding piece, a first elastic piece, a second elastic piece, a first clamping piece and a second clamping piece; the first clamping piece and the second clamping piece are movably arranged on the clamping piece; the first sliding part is in sliding fit with the clamping part and can move from a first position to a second position. The first elastic piece is arranged on the clamping piece and used for driving the first sliding piece to move from the second position to the first position; the second sliding part is in sliding fit with the clamping part, the second elastic part is arranged on the clamping part and used for driving the second sliding part to slide along the first direction so as to drive the second clamping part to lock the first sliding part at the second position, and the second sliding part can slide relative to the clamping part under the action of external force so as to enable the second clamping part to be separated from the first sliding part, so that the first sliding part is unlocked from the second position and moves to the first position under the action of the first elastic part. The operation is convenient, time-saving and labor-saving.

Description

Quick connector and medicine injection booster

Technical Field

The utility model relates to the field of medical equipment, particularly, relate to a quick connector and medicine injection boost motor.

Background

The quick connector is a convenient plug-and-play connection mode, and is used frequently in the space occasions where pipelines are inconvenient and difficult to connect. In addition, in the medical field, the booster is also provided with a quick-connection plug for connecting with an injection needle tube.

The research shows that the prior quick connector has the following defects:

the quick connector is complex to operate and inconvenient to use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a quick connector and medicine injection boost motor, quick connector and being connected of needle tubing with take off convenient operation, efficient.

The embodiment of the utility model is realized like this:

in a first aspect, an embodiment of the present invention provides a quick connector for installing a needle tube, the quick connector includes:

the clamping device comprises a clamping piece, a first sliding piece, a second sliding piece, a first elastic piece, a second elastic piece, a first clamping piece and a second clamping piece; the first clamping piece and the second clamping piece are movably arranged on the clamping piece; the first sliding part is matched with the outside of the clamping part in a sliding manner, the first sliding part can move from a first position to a second position under the action of external force, and when the first sliding part is positioned at the first position, the first sliding part supports against the first clamping piece so that the first clamping piece can support against the needle tube; when the needle tube is positioned at the second position, the first clamping piece is released by the first sliding piece, so that the needle tube can be released by the first clamping piece; the first elastic piece is arranged on the clamping piece and used for driving the first sliding piece to move from the second position to the first position along the first direction; the second sliding part is slidably matched inside the clamping part, the second elastic part is arranged in the clamping part and used for driving the second sliding part to slide along a first direction so as to drive the second clamping part to lock the first sliding part at a second position, and the second sliding part can slide relative to the clamping part along a second direction opposite to the first direction under the action of external force so as to enable the second clamping part to be separated from the first sliding part, and further the first sliding part is unlocked from the second position and moves to the first position under the action of the first elastic part.

In an optional embodiment, the clamping piece is provided with an inner cavity, and a first bayonet and a second bayonet which are communicated with the inner cavity, and the second elastic piece and the second sliding piece are both positioned in the inner cavity; the first clamping piece is movably arranged in the first clamping opening, and the second clamping piece is movably arranged in the second clamping opening.

In an optional embodiment, the number of the first bayonets is set to be a plurality, and the plurality of the first bayonets are arranged at intervals along the circumferential direction of the clamping piece; the quantity of first fastener is a plurality of, a plurality of first fasteners and a plurality of first bayonet socket one-to-one and cooperation.

In an optional embodiment, the number of the second bayonets is set to be a plurality, and the plurality of second bayonets are arranged at intervals along the circumferential direction of the clamping piece; the quantity of second fastener is a plurality of, a plurality of second fasteners and a plurality of second bayonet socket one-to-one and cooperation.

In an alternative embodiment, the inner wall of the clamping member includes a first wall and a second wall that are arranged along the axial direction of the clamping member and connected to each other, the first wall and the second wall have an included angle, and one end of the second elastic member can abut against the first wall to provide elastic force for the first sliding member to move from the second position to the first position.

In an alternative embodiment, the first sliding part is tubular, and the first sliding part is sleeved outside the clamping part; the inner peripheral wall of the first sliding part is provided with a first clamping groove, a first abutting part and a second clamping groove which are sequentially arranged along the axial direction of the first sliding part; when the first sliding piece is positioned at the first position, the first abutting part abuts against the first clamping piece, so that the first clamping piece can abut against the needle tube; when the first sliding piece is located at the second position, the first clamping piece can move to be inserted into the first clamping groove, and the second clamping piece can move to be inserted into the second clamping groove.

In an alternative embodiment, the second sliding part is provided in a tubular shape, and the outer peripheral wall of the second sliding part is provided with a third clamping groove arranged along the axial direction of the second sliding part and a second abutting part; when the first sliding part is located at the first position, the second clamping piece is clamped with the third clamping groove, and when the first sliding part is located at the second position, the second abutting part abuts against the second clamping piece, so that the second clamping piece abuts against the first sliding part, and the first sliding part is further kept at the second position.

In an optional embodiment, a limiting block is arranged on the second sliding part, and the limiting block protrudes out of the outer peripheral wall of the second sliding part; the clamping piece is provided with a slide way, and the limiting block is in sliding fit with the slide way to limit the sliding range of the second sliding piece.

In an optional embodiment, the quick-connect connector further comprises a connecting sleeve, and the connecting sleeve is sleeved outside the clamping piece; the connecting sleeve is provided with an inner bottom wall and an inner peripheral wall which are connected, an accommodating groove is formed between the inner peripheral wall and the clamping piece, the second elastic piece is located in the accommodating groove, and one end of the second elastic piece abuts against the inner bottom wall.

In a second aspect, an embodiment of the present invention provides a medicine injection booster, which includes:

a booster body and a quick-connect coupling as according to any of the preceding embodiments, the quick-connect coupling being detachably connected to the booster body.

The embodiment of the utility model provides a beneficial effect is:

in summary, the embodiment provides a quick connector, before installing the needle tube, first slider is pushed under the action of external force to make first slider move to the second position along the second direction, at this moment, first slider relies on the second fastener joint in the outside of holder, through the cooperation structure of second fastener and second slider, can make first slider remain in the second position department all the time, and can not move to the first position by the second position under the effect of first elastic component. When the needle tube is installed, the needle tube is inserted into the clamping piece, the end part of the needle tube can be abutted against the second sliding piece along with the increase of the insertion depth of the needle tube, so that the second sliding part slides along the second direction under the action of external force, the second clamping piece can move away from the first sliding piece, the second clamping piece can be separated from the first sliding piece, and simultaneously, under the action of the elastic force of the first elastic piece, the first elastic piece can push the first sliding piece to move towards the first position along the first direction, in the process that the first sliding part moves along the first direction, the first sliding part can push the second clamping block to move along the direction far away from the first sliding part, finally the first sliding part slides to the first position, the first sliding part is abutted against the first clamping part, so that the first clamping part is abutted against the needle tube positioned in the clamping part, and the connection between the needle tube and the quick-plugging connector is completed. When the needle tube needs to be pulled out, the operation that the first sliding part moves from the first position to the second position is repeated, and in the process that the first sliding part slides to the second position, the second clamping block is separated from the second sliding part, and under the action of the second elastic part, the second sliding part can slide along the first direction and support the needle tube to enable the needle tube to be ejected out of the clamping piece, so that the needle tube can be taken out conveniently. After the first sliding part moves to the second position, the first sliding part is locked at the second position by the matching structure of the second clamping block and the second sliding part, so that a new needle tube can be directly inserted next time conveniently and rapidly, and the efficiency is high.

The medicine injection booster provided by the embodiment comprises the quick-connection-peg, and has all the advantages of the quick-connection-peg.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required 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 a schematic perspective view of a fitting structure of a quick connector and a needle tube according to an embodiment of the present invention;

FIG. 2 is an exploded view of the quick connector and needle tube assembly according to the embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a mating structure of a quick connector and a needle cannula according to an embodiment of the present invention (with the first sliding member located at a first position);

FIG. 4 is a schematic cross-sectional view of a mating structure of a quick connector and a needle cannula according to an embodiment of the present invention (with the first sliding member in the second position);

fig. 5 is a schematic structural view of a clamping member according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a clamp according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an outer tube according to an embodiment of the present invention;

fig. 8 is a schematic cross-sectional view of a first slider according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a second sliding member according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a connecting sleeve according to an embodiment of the present invention;

fig. 11 is a schematic structural view of a needle cannula according to an embodiment of the present invention.

Icon:

01-needle tube; 10-a clamping groove; 001-quick connector; 100-a clamp; 110-a first tube segment; 111-a first bayonet; 112-a second bayonet; 113-an annular mounting groove; 114-a slide; 115-annular limit projection; 120-a second pipe section; 130-a third tube segment; 140-an annular step; 200-a first slide; 210-an outer tube; 211-a seal pipe section; 212-a cylindrical tube section; 213-a truncated cone shaped pipe section; 220-an inner tube; 230-a first card slot; 240 — a first abutment; 250-a second card slot; 300-a second slide; 310-a second abutment; 320-a third card slot; 330-a limiting block; 400-a first resilient member; 500-a second elastic member; 600-a first clip; 700-second cartridge; 800-connecting sleeve; 810-sealing plate; 820-a cannula; 900-front cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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, as 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 accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to 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 the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, 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, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the following examples, unless otherwise specified, the first direction is the direction indicated by the ab arrow in the drawings, and the second direction is the direction indicated by the ba arrow in the drawings.

Referring to fig. 1, the present embodiment provides a quick connector 001, which is used for connecting with a booster body and installing a needle tube 01, so that a push rod on the booster body can push a piston in sliding fit with the needle tube 01 to move, thereby implementing a drug injection function. The booster can be used for anesthesia injection and can be suitable for oral medicine injection, and the use scenes of the booster are not listed.

Referring to fig. 1 to 4, the quick connector 001 of the present embodiment includes a clamping member 100, a first sliding member 200, a second sliding member 300, a first elastic member 400, a second elastic member 500, a first clip 600, and a second clip 700; the first clamping piece 600 and the second clamping piece 700 are movably arranged on the clamping piece 100. The first sliding part 200 is slidably matched outside the clamping part 100, the first sliding part 200 can move from a first position to a second position under the action of external force, when the first sliding part 200 is at the first position, the first sliding part 200 abuts against the first clamping piece 600, so that the first clamping piece 600 can abut against the needle tube 01, and the needle tube 01 is prevented from sliding relative to the clamping part 100 along the axial direction of the needle tube 01; when the first slider 200 is in the second position, the first slider 200 releases the first cartridge 600 so that the first cartridge 600 can move away from the needle 01 in the radial direction of the needle 01 to release the needle 01. The first elastic element 400 is disposed on the clamping element 100 and is used for driving the first sliding element 200 to move from the second position to the first position along the first direction. The second sliding member 300 is slidably fitted inside the clamping member 100, the second elastic member 500 is disposed in the clamping member 100, and is used for driving the second sliding member 300 to slide along a first direction, so as to drive the second clip member 700 to lock the first sliding member 200 at the second position, and the second sliding member 300 can slide relative to the clamping member 100 along a second direction opposite to the first direction under the action of an external force, so that the second clip member 700 can be separated from the first sliding member 200, and the first sliding member 200 can be unlocked from the second position and moved to the first position under the action of the first elastic member 400.

In summary, in the quick connector 001 of the present embodiment, please refer to fig. 3, the first sliding member 200 is located at the first position, please refer to fig. 4, and the first sliding member 200 is located at the second position. Before the needle tube 01 is installed, it is set that the initial position of the first sliding member 200 is located at the first position, an operator may first apply an external force to push the first sliding member 200 to move the first sliding member 200 from the first position to the second position along the second direction, at this time, the first sliding member 200 is clamped outside the clamping member 100 by the second clamping member 700, the first sliding member 200 can be always kept at the second position through the matching structure of the second clamping member 700 and the second sliding member 300, and the first sliding member 200 cannot move from the second position to the first position along the first direction under the action of the first elastic member 400. When the needle tube 01 is installed, the needle tube 01 is inserted into the clamping member 100, with the increase of the insertion depth of the needle tube 01, the end of the needle tube 01 can abut against the second slider 300, so that the second slider 300 slides along the second direction under the action of external force, during the sliding process of the second slider 300, the second card 700 can move away from the first slider 200, the second card 700 can disengage from the first slider 200, meanwhile, under the action of the elastic force of the first elastic member 400, the first elastic member 400 can push the first slider 200 to move towards the first position along the first direction, during the moving process of the first slider 200 along the first direction, the first slider 200 can push the second card to move along the direction away from the first slider 200, finally, the first slider 200 slides to the first position, the first slider 200 abuts against the first card 600, so that the first card 600 is located in the clamping member 100 to abut against the 01, the connection of the needle tube 01 and the quick-connect plug 001 is completed. After the needle tube 01 is installed, the needle tube 01 does not move relative to the clamping member 100 in the first direction or the second direction, so that a piston in the needle tube 01 can be pushed conveniently to perform medicine injection operation. When the needle tube 01 needs to be pulled out, the above operation of pushing the first sliding member 200 from the first position to the second position is repeated, and when the first sliding member 200 slides to the second position, the second fixture block is separated from the second sliding member 300, and under the action of the second elastic member 500, the second sliding member 300 can slide along the first direction and support the needle tube 01 to make the needle tube 01 pop out of the clamping member 100, so as to facilitate the taking out of the needle tube 01. After the first sliding member 200 moves to the second position, the first sliding member 200 is locked at the second position by the matching structure of the second locking block and the second sliding member 300, so that a new needle tube 01 can be directly inserted next time, the operation is convenient and fast, and the efficiency is high.

It should be noted that, during the operation of extracting the needle tube 01, the first sliding member 200 can be moved from the first position to the second position by the second elastic member 500 in cooperation with an external force.

Referring to fig. 5 and 6, in the present embodiment, the clamping member 100 is configured as a tube, the clamping member 100 includes a first tube segment 110, a second tube segment 120, and a third tube segment 130, which are coaxial, and the first tube segment 110, the second tube segment 120, and the third tube segment 130 can be configured as a cylindrical tube segment 212. The inner diameter of the first pipe section 110 and the inner diameter of the third pipe section 130 are both larger than the inner diameter of the second pipe section 120, and an annular step 140 is formed at the connection position of the first pipe section 110 and the second pipe section 120. The annular end surface of the annular step 140 is configured as a first wall and the inner wall of the first tube segment 110 is configured as a second wall, the first wall and the second wall being perpendicular, it being understood that in other embodiments, the first wall and the second wall may be at other angles. The peripheral wall of the first pipe segment 110 is provided with a cylindrical first bayonet 111, a cylindrical second bayonet 112, an annular mounting groove 113 for mounting a sealing ring, and an elongated slide way 114, and obviously, in other embodiments, the shapes of the first bayonet 111 and the second bayonet 112 may not be limited to be cylindrical. In the axial direction of the clamping member 100, the first bayonet 111 is farther away from the annular step 140 than the second bayonet 112.

It should be noted that the number of the first bayonets 111 is at least one, and the first bayonets 111 may be arranged as needed, for example, in this embodiment, the number of the first bayonets 111 is five, and the five first bayonets 111 are uniformly arranged at intervals along the circumferential direction of the clamping member 100. The number of the second bayonets 112 is at least one, and the second bayonets can be arranged as required. For example, in the present embodiment, the number of the second bayonets 112 is three, and the three second bayonets 112 are uniformly spaced along the circumferential direction of the clamping member 100.

In this embodiment, the outer peripheral wall of the first pipe segment 110 is provided with an annular limiting protrusion 115, the annular limiting protrusion 115 may not be limited to be an annular protrusion, the annular limiting protrusion 115 protrudes outward along the radial direction of the first pipe segment 110, and the annular limiting protrusion 115 is used for abutting against one end of the first elastic member 400 sleeved outside the clamping member 100.

In this embodiment, the inner wall of the third pipe section 130 is provided with an internal thread for screwing with the booster body. It should be apparent that in other embodiments, the third tube segment 130 may be secured to the booster body in other ways.

Referring to fig. 7 and 8, in the present embodiment, the first sliding member 200 includes an outer tube 210 and an inner tube 220 fixedly connected to each other, the outer tube 210 is sleeved outside the inner tube 220, and the inner tube 220 is a cylindrical tube. The outer tube 210 is configured as a tubular structure having a circular cross-section. The outer tube 210 comprises a sealing tube section 211, a cylindrical tube section 212 and a truncated cone-shaped tube section 213 which are sequentially communicated, wherein the sealing tube section 211 is a cylindrical tube, and the sealing tube section 211, the cylindrical tube section 212 and the truncated cone-shaped tube section 213 can be integrally formed and are coaxial. The tube sealing section 211 is communicated with one end of the cylindrical tube section 212, the other end of the cylindrical tube section 212 is communicated with the end with the larger caliber of the truncated cone-shaped tube section 213, and the inner diameter of the tube sealing section 211 is smaller than that of the cylindrical tube section 212. The truncated cone-shaped pipe section 213 is sleeved outside the inner pipe 220, one axial end face of the inner pipe 220 and the wall of the inner pipe 220 of the truncated cone-shaped pipe section 213 form a first annular clamping groove 230, the other axial end face of the inner pipe 220, part of the wall of the inner pipe 220 of the cylindrical pipe section 212 and one axial end face of the sealing pipe form a second annular clamping groove 250, and the wall of the inner pipe 220 is provided with a first abutting portion 240 for abutting against the first clamping piece 600. First slider 200 sets up to inner tube 220 and outer tube 210 integrated configuration, and the two is as an organic whole again after independently processing, reduces the processing degree of difficulty, and the processing of being convenient for improves machining efficiency.

Referring to fig. 3 and 9, in the present embodiment, the second sliding member 300 is a cylindrical tubular structure, and the outer edges of the two axial end surfaces of the second sliding member 300 are provided with chamfers, which may be fillets or chamfers. The outer peripheral surface of the second slider 300 is provided with a second abutting portion 310 and an annular third latching groove 320, in other words, a part of the outer peripheral surface of the second slider 300 is provided with the second abutting portion 310 for abutting against the second latching member 700. Further, the outer peripheral surface of the second slider 300 is provided with a limiting block 330, the limiting block 330 may be a cylinder, the limiting block 330 protrudes outward along the radial direction of the second slider 300, and the limiting block 330 is used for being inserted into the slideway 114 on the clamping member 100 and slidably cooperating with the slideway 114 to limit the sliding range of the second slider 300. That is, when the second sliding member 300 slides along its axis direction (the first direction or the second direction) relative to the clamping member 100, the limiting block 330 can abut against two side walls of the slideway 114 in the length direction, so as to limit the limiting block 330 and the clamping member 100, and finally limit the second sliding member 300 and the clamping member 100, so as to prevent the second sliding member 300 from sliding out of the clamping member 100. Optionally, the stop block 330 is detachably connected to the second slider 300 for easy installation and replacement.

In other embodiments, the annular third latching groove 320 may not be formed on the outer circumferential surface of the second slider 300, and the outer circumferential surface of the second slider 300 may be directly formed as an inclined surface, so that a gap is formed between the inclined surface of the second slider 300 and the inner circumferential wall of the clamping member 100 to avoid the first latching part 600.

In this embodiment, both the first elastic member 400 and the second elastic member 500 may be provided as coil springs. Obviously, in other embodiments, one of the first elastic member 400 and the second elastic member 500 may be provided as a coil spring. Alternatively, in other embodiments, at least one of the first and second elastic members 400 and 500 may be provided as a rubber block. Alternatively, in other embodiments, one of the first and second elastic members 400 and 500 is provided as a coil spring and the other is provided as a rubber block. It should be understood that the first and second elastic members 400 and 500 may not be limited to being coil springs or rubber blocks in other embodiments.

Referring to fig. 1 and 10, in the present embodiment, the quick connector 001 further includes a connecting sleeve 800, the connecting sleeve 800 includes a hollow sealing plate 810 and a sleeve 820 connected to the sealing plate 810, and an inner diameter of the sealing plate 810 is smaller than an inner diameter of the sleeve 820. The closure plate 810 may be a circular annular plate and the sleeve 820 may be a cylindrical tube. The connection sleeve 800 is configured to be sleeved outside the first pipe segment 110 of the clamping member 100, and is fixedly connected to the first pipe segment 110, so that an end surface of the sealing plate 810, an inner circumferential wall of the sleeve 820, and an outer circumferential wall of the first pipe segment 110 together form a receiving groove for receiving the first elastic member 400.

In this embodiment, optionally, the first clip 600 may be a ball, and the number of the first clip 600 is equal to that of the first bayonet 111 and matches with the first bayonet in a one-to-one correspondence manner. The second clamping pieces 700 can be balls, and the number of the second clamping pieces 700 is equal to that of the second bayonets 112 and the second bayonets are matched in a one-to-one correspondence manner.

In this embodiment, the quick connector 001 further includes a sealing ring, and the sealing ring is disposed in the annular mounting groove 113 of the first pipe section 110.

In this embodiment, the quick connector 001 further includes a hollow front cover 900, and the front cover 900 is sleeved outside the first pipe section 110 of the clamping member 100.

In the quick-connect coupling 001 of this embodiment, the second elastic member 500 is placed in the clamping member 100, one end of the second elastic member 500 abuts against the annular step 140 formed between the first pipe segment 110 and the second pipe segment 120, the second sliding member 300 is placed in the clamping member 100, and the limiting block 330 on the second sliding member 300 is inserted into the sliding channel 114 on the first pipe segment 110. The first clamping piece 600 is placed in the first bayonet 111, the second clamping piece 700 is placed in the second bayonet 112, the first clamping piece 600 cannot fall into the clamping piece 100, and the second clamping piece 700 cannot fall into the clamping piece 100. The outer sleeve is sleeved outside the clamping member 100 and is fixedly connected with the clamping member 100, the first elastic member 400 is sleeved outside the clamping member 100, one end of the first elastic member 400 abuts against the annular limiting protrusion 115 on the first pipe section 110, the first sliding member 200 is sleeved outside the clamping member 100, and the first sliding member 200 can be inserted into the accommodating groove in the sliding process. The front cover 900 is sleeved outside the clamping member 100 to prevent the first sliding member 200 from sliding off the clamping member 100 when sliding along its axis in a direction (first direction) away from the first elastic member 400. The front cover 900 may be coupled to the clamping member 100 using a damping structure, or may be coupled to the clamping member using a screw structure. When it is required to be used, the initial position of the first slider 200 is set to the first position. When the first slider 200 is located at the first position, the needle tube 01 can be clamped, specifically, the first abutting portion 240 abuts against the first clip 600, so that the first clip 600 locks the needle tube 01, and the second abutting portion 310 abuts against the second clip 700, so that the second clip 700 is clamped with the third slot 320 of the second slider 300. When the first sliding part 200 slides from the first position to the second position under the action of an external force, the first sliding part 200 slides along the second direction, the second sliding part 300 can slide along the first direction, the first abutting part 240 leaves the first clip 600, and the first clip groove 230 slides to the position of the first clip 600, so that the first clip 600 can move away from the needle tube 01 and enter the first clip groove 230, the first clip 600 can release the needle tube 01, and the needle tube 01 can be taken out. In the process that the first sliding member 200 slides along the second direction, the second abutting portion 310 leaves the second clip 700, and the second clip groove 250 slides to the position of the second clip 700, so that the second clip 700 can slide into the second clip groove 250 to leave the third clip groove 320 on the second sliding member 300, and further the second sliding member 300 slides towards the first direction under the elastic force of the second elastic member 500, and the third abutting portion on the second sliding member 300 abuts against the second clip 700, so that the second clip 700 is kept at the position where the second clip 700 is clipped into the second clip groove 250, and the first sliding member 200 is locked at the second position. When the needle tube 01 needs to be inserted again, the needle tube 01 is inserted from the first tube section 110, the needle tube 01 pushes the second slider 300 to slide in the second direction, the second abutting part 310 on the second slider 300 leaves the second clip member 700, the third clip member 320 on the second slider 300 moves to the position of the second clip member 700, and the second clip member 700 can slide into the third clip member 320. Meanwhile, under the action of the first elastic element 400, the first sliding element 200 can slide along the first direction, so that the first abutting portion 240 on the first sliding element 200 abuts against the first clip element 600, and the first clip element 600 locks the needle tube 01, thereby completing the installation of the needle tube 01. Since the end of the clamping member 100 is provided with the front cover 900, the front cover 900 can prevent the first slider 200 from sliding out of the clamping member 100 in the first direction. The needle tube 01 is inserted into the clamping piece 100 and the needle tube 01 is taken out from the clamping piece 100, and only one step is needed to be operated, so that the operation is simple and convenient, and the efficiency is improved.

Referring to fig. 11, it should be noted that, in practical operation, the outer peripheral surface of the needle tube 01 is provided with an annular clamping groove 10 for clamping and matching with the first clamping piece 600 to limit the needle tube 01 to slide relative to the clamping piece 100 along the first direction or the second direction.

The quick connector 001 that this embodiment provided, convenient operation, labour saving and time saving raises the efficiency.

The embodiment further provides a medicine injection booster, which comprises a booster body (not shown in the figure) and the quick-connection plug 001, wherein the quick-connection plug 001 is detachably connected with the booster body. In practice, the clamping member 100 and the booster body may be fixed by screwing, that is, the third pipe section 130 of the clamping member 100 may be screwed with the booster body.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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-connect coupling for mounting a needle cannula, the quick-connect coupling comprising:

the clamping device comprises a clamping piece, a first sliding piece, a second sliding piece, a first elastic piece, a second elastic piece, a first clamping piece and a second clamping piece; the first clamping piece and the second clamping piece are movably arranged on the clamping piece; the first sliding part is matched with the outside of the clamping part in a sliding manner, the first sliding part can move from a first position to a second position under the action of external force, and when the first sliding part is positioned at the first position, the first sliding part supports against the first clamping piece, so that the first clamping piece can support against the needle tube; when in the second position, the first slide releases the first clamping piece, so that the first clamping piece can release the needle tube; the first elastic piece is arranged on the clamping piece and used for driving the first sliding piece to move from the second position to the first position along a first direction; the second sliding part is slidably matched inside the clamping part, the second elastic part is arranged in the clamping part and used for driving the second sliding part to slide along the first direction so as to drive the second clamping part to lock the first sliding part at the second position, and the second sliding part can slide relative to the clamping part along the second direction opposite to the first direction under the action of external force, so that the second clamping part can be separated from the first sliding part, and the first sliding part is unlocked from the second position and moves to the first position under the action of the first elastic part.

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

the clamping piece is provided with an inner cavity, a first bayonet and a second bayonet, the first bayonet and the second bayonet are communicated with the inner cavity, and the second elastic piece and the second sliding piece are both positioned in the inner cavity; the first clamping piece is movably arranged in the first clamping opening, and the second clamping piece is movably arranged in the second clamping opening.

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

the number of the first bayonets is set to be multiple, and the multiple first bayonets are arranged at intervals along the circumferential direction of the clamping piece; the quantity of first fastener is a plurality of, and is a plurality of first fastener and a plurality of first bayonet socket one-to-one and cooperation.

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

the number of the second bayonets is set to be multiple, and the second bayonets are arranged at intervals along the circumferential direction of the clamping piece; the quantity of the second clamping pieces is multiple, and the second clamping pieces are in one-to-one correspondence with and matched with the second bayonets.

5. The quick connector as claimed in any one of claims 2 to 4, wherein:

the inner wall of the clamping piece comprises a first wall and a second wall which are arranged along the axial direction of the clamping piece and are connected, an included angle is formed between the first wall and the second wall, and one end of the second elastic piece can be abutted against the first wall so as to provide elasticity for the first sliding piece to move from the second position to the first position.

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

the first sliding part is tubular and is sleeved outside the clamping part; the inner peripheral wall of the first sliding part is provided with a first clamping groove, a first abutting part and a second clamping groove which are sequentially arranged along the axial direction of the first sliding part; when the first sliding piece is positioned at the first position, the first abutting part abuts against the first clamping piece, so that the first clamping piece can abut against the needle tube; when the first sliding piece is located at the second position, the first clamping piece can move to be inserted into the first clamping groove, and the second clamping piece can move to be inserted into the second clamping groove.

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

the second sliding part is tubular, and the outer peripheral wall of the second sliding part is provided with a third clamping groove and a second abutting part which are axially arranged along the second sliding part; when the first sliding part is located at the first position, the second clamping piece is clamped with the third clamping groove, and when the first sliding part is located at the second position, the second abutting part abuts against the second clamping piece, so that the second clamping piece abuts against the first sliding part, and the first sliding part is further kept at the second position.

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

the second sliding part is provided with a limiting block, and the limiting block protrudes out of the outer peripheral wall of the second sliding part; the clamping piece is provided with a slide way, and the limiting block is in sliding fit with the slide way to limit the sliding range of the second sliding piece.

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

the quick-plug connector also comprises a connecting sleeve which is sleeved outside the clamping piece; the connecting sleeve is provided with an inner bottom wall and an inner peripheral wall which are connected, a containing groove is formed between the inner peripheral wall and the clamping piece, the second elastic piece is located in the containing groove, and one end of the second elastic piece abuts against the inner bottom wall.

10. A medication injection booster, comprising:

a booster body and a quick-connect coupling as claimed in any one of claims 1 to 9, the quick-connect coupling being detachably connected with the booster body.

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