CN209856584U - Quick connector - Google Patents

Abstract

The utility model provides a quick connector belongs to valve pipeline class technical field. The movable joint solves the problems that the movable joint is realized on the basis that the pipe fitting can be conveniently disassembled, the applicability is improved, and the safety is ensured during use. It is including connecting the body, it is the grafting end to connect the at least one end of body, connect and be connected with the shell on the body, be equipped with bush and rand in the shell in proper order, the grafting end passes in rand to the bush, this quick connector still including can connect on the shell and carry out the pivoted for the shell and dismantle the cover, the middle part outside that connects the body is equipped with cyclic annular fender shoulder one in proper order and keeps off shoulder two with cyclic annular, cyclic annular keeps off and forms annular draw-in groove between the interior terminal surface of shoulder one and the cyclic annular outer terminal surface that keeps off shoulder two, port department is equipped with annular convex part in the shell, annular convex part. This quick connector makes the user can conveniently be to the pipe fitting for quick connector has possessed the loose joint function, prevents that other people from dismantling the shell from the outside, advantages such as the security is higher.

Description

Quick connector

Technical Field

The utility model belongs to the technical field of valve pipeline class, a connect, in particular to quick connector is related to.

Background

In daily life, butt joint of plastic pipelines is usually inconvenient and inefficient to operate in modes of hot melt connection, ring pressure locking connection, bonding and the like. The quick connector is usually characterized in that a clamping ring arranged on the connector is used for fixing a pipeline inserted into the quick connector, clamping teeth are arranged on the clamping ring and incline along the insertion direction of the pipeline, and the pipeline can be easily inserted into the quick connector but is difficult to extract due to the reaction force from the clamping teeth when being extracted. The appearance of the quick connector facilitates the connection of pipelines. Compared with the mode of hot melt connection, ring pressure locking connection, bonding and the like, the quick connector is utilized to greatly shorten the connection time, and the efficiency is greatly improved.

However, the practice shows that the quick connector is convenient to connect the pipeline, but is inconvenient when the connecting end needs to be disassembled, and then a quick connector disassembling tool is invented, and the pipe fitting connected with the quick connector is disassembled by using a special tool. Although the problem can be solved, it is very inconvenient. And the common quick connector has no loose joint function, and when the pipeline needs to be rotated or changed, the function cannot be met.

Furthermore, some quick connectors with a loose joint or a detachable quick connector, such as the quick connector disclosed in application No. 201810650426.X, have a loose joint function but cannot be detached, and the loose joint has a complex structure and is not easy to assemble, and for example, the quick-release quick connector disclosed in application No. 201720777320.7 has a function of conveniently detaching a pipe fitting but does not have an obvious loose joint function.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a quick connector, the technical problem that solve realizes the loose joint on the basis that the pipe fitting can conveniently be dismantled, improves the security when suitability and assurance use.

The purpose of the utility model can be realized by the following technical proposal:

the quick connector comprises a hollow columnar connector body, wherein at least one end of the connector body is a plug end, a shell is connected onto the connector body, the plug end is positioned in the shell, a cavity is formed between the plug end and the shell, a bushing and a clamping ring are sequentially arranged in the shell, and the plug end penetrates through the clamping ring to the bushing, the quick connector also comprises a disassembling sleeve which can be connected onto the shell and rotates relative to the shell, when the disassembling sleeve rotates relative to the shell, the disassembling sleeve can move towards the direction close to the clamping ring and push the bushing to open the clamping ring, and the quick connector is characterized in that an annular first retaining shoulder and an annular second retaining shoulder are sequentially arranged on the outer side of the middle part of the connector body, an annular clamping groove is formed between the inner end surface of the annular first retaining shoulder and the outer end surface of the annular second retaining shoulder, an annular convex part is arranged at the inner port of the shell, the annular convex part is positioned in, the outer end face of the first annular blocking shoulder is obliquely arranged, and the oblique direction of the outer end face of the first annular blocking shoulder is the same as that of the inner end face of the annular convex part.

During assembly, the shell is connected to the connector body, specifically, the inner end face of the annular convex part on the shell is obliquely arranged and the outer end face of the annular shoulder I on the connector body is obliquely arranged, and the oblique directions of the inner end face and the outer end face are the same, so that the annular convex part can be extruded through the annular shoulder I and clamped into the annular clamping groove. Annular convex part and ring groove's cooperation for the shell is fixed with the body that connects in the axial, but relative rotation, so just realized the loose joint function, the suitability has been improved when utilizing the dismantlement cover to realize that the pipe fitting can conveniently dismantle, and ring groove is kept off shoulder one by cyclic annular and keeps off shoulder two and form, go into back in ring groove when annular convex part card, the interior terminal surface of shell can support and keep off shoulder two by cyclic annular, make like this and connect between the body not have the detaching point, prevent that other people from dismantling the shell from the outside, the security is higher.

In the quick connector, the outer diameter of the second annular retaining shoulder is larger than that of the first annular retaining shoulder.

The advantage that the external diameter of cyclic annular fender shoulder is greater than the external diameter of cyclic annular fender shoulder one prevents that the shell from excessively assembling, and effectual shell card that lets is gone into in the ring groove, prevents to use violently to make the shell cross cyclic annular fender shoulder two, can guarantee simultaneously that the shell inner end face can support smoothly to lean on the outer terminal surface that keeps off shoulder two in order to ensure that there is not the detaching point between shell and the joint body.

In the quick connector, the outer shell comprises a positioning seat and a positioning sleeve connected to the positioning seat, the annular convex part is arranged on the positioning seat, the inner end of the positioning sleeve is fixed to the outer end of the positioning seat, the bushing is arranged on the inner side of the positioning sleeve in a sliding mode, a concave cavity is formed in the outer end face of the positioning seat, and the outer edge of the clamping ring abuts against the concave cavity.

The shell is divided into two parts of a positioning seat and a positioning sleeve, and has the advantages of convenience in disassembly and assembly of the clamping ring, simplification of the assembly process and the like.

In foretell quick connector, the position sleeve is including the body for the solid of revolution, and the inner of body is equipped with annular protrusion, and the positioning seat outer end is located annular protrusion inboard, and annular convex inner peripheral surface is equipped with annular positioning groove, and the outer peripheral face of positioning seat outer end is equipped with annular location portion, and annular location portion imbeds in the annular positioning groove, and annular convex inner port has interior conical surface, and the outer terminal surface slope of annular location portion sets up.

During the assembly, exert external force on the position sleeve, the annular protrusion leans on and produces the deformation through the outer terminal surface counterbalance of the interior conical surface of interior port and annular location portion to make annular location portion can crowd annular convex inboard and imbed smoothly the annular constant head tank in, adopt this kind of mode to assemble position sleeve and positioning seat and can ensure to be difficult to dismantle between position sleeve and the positioning seat.

In the quick connector, the outer peripheral surface of the outer end of the positioning seat is also provided with an annular supporting part, the inner end surface of the annular protrusion abuts against the outer end surface of the annular supporting part, and the outer peripheral surface of the annular protrusion is flush with the outer peripheral surface of the annular supporting part.

The design of annular supporting part has strengthened the intensity of whole quick-witted bayonet joint for quick-witted bayonet joint life greatly increased. When the annular protrusion is matched with the annular supporting part, the outer peripheral surfaces of the annular protrusion and the annular supporting part are flush, so that a position which can apply acting force does not exist between the positioning sleeve and the positioning seat, the positioning sleeve and the positioning seat have the advantage that the positioning sleeve and the positioning seat cannot be forcibly destroyed and removed by tools or external force, and the positioning seat and the positioning sleeve form a whole, namely a shell.

In the quick connector, the inner end surface of the annular supporting part is provided with a convex block, the inner end inner side of the dismounting sleeve is provided with a convex matching block, the convex block is provided with an inclined surface, the matching block is provided with an inclined matching surface, the matching block is positioned on one side of the convex block when the dismounting sleeve is connected to the shell, and the matching surface moves along the inclined surface when the dismounting sleeve rotates and enables the matching block to move to abut against the inner end surface of the convex block.

The inner end face of the annular supporting portion is provided with a downward convex block, the disassembling sleeve is provided with a matching block, the matching block on the matching block of the disassembling sleeve can be contacted with the inclined plane of the convex block as long as the matching block is rotated, then the matching block can move along the inclined plane in the further rotation of the disassembling sleeve to enable the matching block to move to abut against the inner end face of the convex block, and the disassembling sleeve is enabled to move towards the direction close to the clamping ring to push the lining to open the clamping ring.

In the quick connector, the outer end face of the bushing is flush with the outer end face of the shell, the inner side of the dismounting sleeve is provided with an arc-shaped flange, the inner end face of the flange abuts against the outer end face of the bushing when the dismounting sleeve is connected to the shell, the inner side of the shell is provided with an annular limiting groove, the outer side of the bushing is provided with a limiting block, the limiting block is located in the annular limiting groove, the outer end face of the limiting block abuts against one side groove wall of the annular limiting groove, and a gap is formed between the inner end face of the limiting block and the other side groove wall of the annular limiting.

The outer terminal surface of bush lies in with the outer terminal surface of shell and flushes the effect, ensures that other people dismantle the pipe fitting under the condition of no dismantlement cover, has avoided external force to cause the extrusion to make the pipeline not hard up to it in the use, has improved the security when using, also makes its leakproofness obtain very big promotion.

When the rotary dismounting sleeve axially moves towards the annular supporting part relative to the shell, the flange on the inner side of the dismounting sleeve can abut against the bushing and pushes the bushing downwards along with the continuous downward movement, the downward movement of the bushing can push the clamping ring open, and the clamping ring is pushed open so that the pipeline can be smoothly taken out of the quick connector.

The bush is slidable fixed in the shell, and the annular spacing groove on the shell is mainly in order to prevent that the bush from falling out or excessively push open the rand and lead to the condition emergence that the rand damaged, is equipped with the stopper on the bush, is equipped with the spacing groove on the shell, the home range of restriction bush.

In the quick connector, the inner end face of the limiting block is obliquely arranged.

When the bushing is assembled, the inner end face of the limiting block contacts the upper end face of the shell firstly, and the inner end face of the limiting block is arranged in an inclined mode, so that the limiting block can be clamped into the shell more easily.

The outer end face of the limiting block is not provided with an inclined plane, so that the limiting block is not easy to fall out reversely, a good limiting effect is achieved, the movement range of the bushing is limited, the bushing is prevented from falling out, and meanwhile the assembly is easier.

The slope sets up convenient assembly, and the inclined plane design can make the stopper on the bush easily slide into annular spacing inslot.

Compared with the prior art, the quick connector has the following advantages:

1. the arrangement of the disassembling sleeve enables a user to conveniently disassemble the pipe fitting, and meanwhile, the matching of the annular convex part and the annular clamping groove enables the quick connector to have a loose joint function;

2. after the annular convex part is clamped in the annular clamping groove, the inner end face of the shell abuts against the outer end face of the annular retaining shoulder II, so that no disassembling point exists between the shell and the joint body, the shell is prevented from being disassembled from the outside by other people, and the safety is high;

3. the outer terminal surface of bush lies in with the outer terminal surface of shell flushes the effect, ensures that other people dismantle the pipe fitting under the condition of not having the dismantlement cover, has avoided external force to cause the extrusion to make the pipeline not hard up to it in the use, has improved the security when using, also makes its leakproofness obtain very big promotion, still is equipped with annular spacing groove on the position sleeve and can prevents effectively that the bush from excessively moving and pushing up bad rand.

Drawings

Fig. 1 is a schematic view of a quick connector.

Fig. 2 is a partial cross-sectional view of a quick connector.

Fig. 3 is a partial exploded view of the quick connector.

Fig. 4 is an enlarged view at a in fig. 2.

Fig. 5 is a schematic view of the positioning seat in the quick connector.

Fig. 6 is a schematic view of the release sleeve of the present quick connector.

In the figure, 1, a joint body; 11. a plug end; 111. an annular groove; 12. a first annular retaining shoulder; 13. a second annular shoulder; 14. an annular neck; 2. a housing; 21. positioning seats; 211. an annular protrusion; 212. a concave cavity; 213. an annular positioning portion; 214. an annular support portion; 215. a bump; 2151. an inclined surface; 22. a positioning sleeve; 221. a body; 222. an annular protrusion; 223. an annular limiting groove; 3. a bushing; 31. a limiting block; 4. a collar; 5. disassembling the sleeve; 51. a matching block; 511. a mating surface; 52. a flange; 6. and an O-shaped ring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, the quick connector includes a hollow cylindrical connector body 1, at least one end of the connector body 1 is a plug end 11, the plug end 11 is provided with an annular groove 111 for accommodating an O-ring 6, and the plug end 11 is provided with the O-ring 6 for sealing when a pipeline is inserted into the quick connector. Connect and be connected with shell 2 on the body 1, grafting end 11 is located shell 2 and forms the cavity between the two, is equipped with bush 3 and rand 4 in proper order in the shell 2, and grafting end 11 passes rand 4 to bush 3 in.

As shown in fig. 2 and 3, a first annular retaining shoulder 12 and a second annular retaining shoulder 13 are sequentially arranged on the outer side of the middle portion of the joint body 1, the first annular retaining shoulder 12 is arranged close to the insertion end 11, the outer diameter of the second annular retaining shoulder 13 is larger than that of the first annular retaining shoulder 12, and an annular clamping groove 14 is formed between the inner end surface of the first annular retaining shoulder 12 and the outer end surface of the second annular retaining shoulder 13. An annular convex part 211 is arranged at the inner port of the shell 2, the inner end face of the annular convex part 211 is obliquely arranged, the outer end face of the annular first blocking shoulder 12 is obliquely arranged, the oblique direction of the outer end face of the annular first blocking shoulder 12 is the same as that of the inner end face of the annular convex part 211, and the annular convex part 211 is clamped into the annular clamping groove 14. During assembly, the housing 2 is connected to the connector body 221, specifically, the inner end face of the annular protrusion 211 on the housing 2 is obliquely arranged and the outer end face of the annular first shoulder 12 on the connector body 221 is obliquely arranged, and the oblique directions of the inner end face and the outer end face are the same, so that the annular protrusion 211 can be squeezed through the annular first shoulder 12 and clamped into the annular clamping groove 14.

Annular convex part 211 and ring groove 14's cooperation, make shell 2 and joint body 221 be fixed in the axial, but also relatively rotate, so just realized the loose joint function, the suitability has been improved when utilizing dismantling cover 5 to realize that the pipe fitting can conveniently be dismantled, and ring groove 14 is kept off shoulder one 12 and annular and is kept off two 13 formation by the annular, back in ring groove 14 is gone into to annular convex part 211 card, the interior terminal surface of shell 2 can support and lean on annular keeps off shoulder two 13, make like this that shell 2 and joint body 221 do not have the detaching point, prevent that other people from dismantling shell 2 from the outside, the security is higher.

As shown in fig. 2, 3 and 4, the outer shell 2 includes a positioning seat 21 and a positioning sleeve 22 connected to the positioning seat 21, the annular protrusion 211 is disposed on the positioning seat 21, an inner end of the positioning sleeve 22 is fixed to an outer end of the positioning seat 21, the bushing 3 is slidably disposed inside the positioning sleeve 22, an outer end surface of the bushing 3 is flush with an outer end surface of the positioning sleeve 22, an outer end surface of the positioning seat 21 is provided with a cavity 212, and an outer edge of the collar 4 abuts against the cavity 212. The inboard annular spacing groove 223 that is equipped with of position sleeve 22, the bush 3 outside is equipped with stopper 31, stopper 31 is located annular spacing groove 223, stopper 31's outer terminal surface supports with one side cell wall of annular spacing groove 223 and leans on, the clearance has between stopper 31's the interior terminal surface and the opposite side cell wall of annular spacing groove 223, annular spacing groove 223 can restrict bush 3's removal stroke with stopper 31's cooperation, avoid bush 3 to excessively strut rand 4 and lead to rand 4 unable deformation to reset.

As shown in fig. 2 to 5, the specific connection mode between the positioning seat 21 and the positioning sleeve 22 is as follows: the positioning seat 21 is sleeved with a body 221 which is a revolving body, an annular protrusion 222 is arranged at the inner end of the body 221, the outer end of the positioning seat 21 is located on the inner side of the annular protrusion 222, an annular positioning groove is arranged on the inner circumferential surface of the annular protrusion 222, an annular positioning portion 213 is arranged on the outer circumferential surface of the positioning seat 21, an inner port of the annular protrusion 222 is provided with an inner conical surface, the outer end surface of the annular positioning portion 213 is obliquely arranged, and the annular positioning portion 213 is embedded into. The outer end face of the positioning seat 21 is further provided with an annular support portion 214, the inner end face of the annular protrusion 222 abuts against the outer end face of the annular support portion 214, and the outer peripheral face of the annular protrusion 222 is flush with the outer peripheral face of the annular support portion 214.

As shown in fig. 1, 2, 5 and 6, the quick connector further includes a removing sleeve 5 which can be connected to the outer casing 2 and rotate relative to the outer casing 2, the removing sleeve 5 has an arc-shaped flange 52 inside, an inner end surface of the flange 52 abuts against an outer end surface of the bushing 3 when the removing sleeve 5 is connected to the outer casing 2, and the removing sleeve 5 can move toward the collar 4 and push the bushing 3 to open the collar 4 when the removing sleeve 5 rotates relative to the outer casing 2. In this embodiment, the inner end surface of the ring-shaped support portion 214 is provided with a projection 215, the inner end of the removing sleeve 5 is provided with a projecting fitting block 51 on the inner side, the projection 215 is provided with an inclined surface 2151, the fitting block 51 is provided with an inclined fitting surface 511, the fitting block 51 is located on one side of the projection 215 when the removing sleeve 5 is attached to the housing 2, and the fitting surface 511 moves along the inclined surface 2151 and moves the fitting block 51 to abut against the inner end surface of the projection 215 when the removing sleeve 5 is rotated.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (8)

1. The quick connector comprises a hollow cylindrical connector body (1), wherein at least one end of the connector body (1) is provided with a plug end (11), the connector body (1) is connected with a shell (2), the plug end (11) is positioned in the shell (2) and forms a cavity between the plug end and the shell, a bushing (3) and a clamping ring (4) are sequentially arranged in the shell (2), the plug end (11) penetrates through the clamping ring (4) to the bushing (3), the quick connector also comprises a disassembling sleeve (5) which can be connected to the shell (2) and rotates relative to the shell (2), when the disassembling sleeve (5) rotates relative to the shell (2), the disassembling sleeve (5) can move towards the direction close to the clamping ring (4) and push the bushing (3) to open the clamping ring (4), and the quick connector is characterized in that a first annular retaining shoulder (12) and a second annular retaining shoulder (13) are sequentially arranged on the outer side of the middle part of the connector body (1), an annular clamping groove (14) is formed between the inner end face of the first annular retaining shoulder (12) and the outer end face of the second annular retaining shoulder (13), an annular convex portion (211) is arranged at the inner end opening of the shell (2), the annular convex portion (211) is located in the annular clamping groove (14), the inner end face of the shell (2) is abutted against the second annular retaining shoulder (13), the inner end face of the annular convex portion (211) is obliquely arranged, the outer end face of the first annular retaining shoulder (12) is obliquely arranged, and the oblique direction of the outer end face of the first annular retaining shoulder (12) is the same as that of the inner end face of the annular convex portion (211).

2. The quick connector according to claim 1, wherein the outer diameter of the second annular shoulder (13) is larger than the outer diameter of the first annular shoulder (12).

3. The quick connector according to claim 1 or 2, wherein the outer housing (2) comprises a positioning seat (21) and a positioning sleeve (22) connected to the positioning seat (21), the annular protrusion (211) is disposed on the positioning seat (21), an inner end of the positioning sleeve (22) is fixed to an outer end of the positioning seat (21), the bushing (3) is slidably disposed inside the positioning sleeve (22), a cavity (212) is disposed on an outer end surface of the positioning seat (21), and an outer edge of the collar (4) abuts against the cavity (212).

4. The quick connector according to claim 3, wherein the positioning sleeve (22) comprises a body (221) which is a solid of revolution, the inner end of the body (221) is provided with an annular protrusion (222), the outer end of the positioning seat (21) is located inside the annular protrusion (222), the inner circumferential surface of the annular protrusion (222) is provided with an annular positioning groove, the outer circumferential surface of the outer end of the positioning seat (21) is provided with an annular positioning portion (213), the annular positioning portion (213) is embedded in the annular positioning groove, the inner port of the annular protrusion (222) is provided with an inner conical surface, and the outer end surface of the annular positioning portion (213) is arranged in an inclined manner.

5. The quick connector as claimed in claim 4, wherein the outer peripheral surface of the outer end of the positioning seat (21) is further provided with an annular support portion (214), the inner end surface of the annular protrusion (222) abuts against the outer end surface of the annular support portion (214), and the outer peripheral surface of the annular protrusion (222) is flush with the outer peripheral surface of the annular support portion (214).

6. The quick-connect coupling according to claim 5, characterized in that the inner end face of the annular support part (214) is provided with a projection (215), the inner end of the removal sleeve (5) is provided with a projecting mating block (51) on the inside, the projection (215) is provided with an inclined face (2151), the mating block (51) is provided with an inclined mating face (511), the mating block (51) is located on one side of the projection (215) when the removal sleeve (5) is connected to the housing (2), and the mating face (511) moves along the inclined face (2151) and moves the mating block (51) against the inner end face of the projection (215) when the removal sleeve (5) is rotated.

7. The quick connector according to claim 1, wherein the outer end surface of the bushing (3) is flush with the outer end surface of the housing (2), the inner side of the detaching sleeve (5) is provided with an arc-shaped flange (52), the inner end surface of the flange (52) abuts against the outer end surface of the bushing (3) when the detaching sleeve (5) is connected to the housing (2), the inner side of the housing (2) is provided with an annular limiting groove (223), the outer side of the bushing (3) is provided with a limiting block (31), the limiting block (31) is located in the annular limiting groove (223), the outer end surface of the limiting block (31) abuts against one side groove wall of the annular limiting groove (223), and a gap is formed between the inner end surface of the limiting block (31) and the other side groove wall of the annular limiting groove (223).

8. The quick connector according to claim 7, characterized in that the inner end face of the stopper (31) is arranged obliquely.