CN220249218U - Novel quick-connect plug - Google Patents

Abstract

The utility model discloses a novel quick-connection plug, which comprises a plug and a locking ring, wherein the plug is connected to a pipe body in a sliding manner; the plug comprises a cannula, wherein the outer circumference of a connecting end of the cannula is recessed inwards to form a mounting step, an external thread area is formed in the circumferential direction of the mounting step, and a conical socket is arranged at the inner circumference of a connecting port of the mounting step; the locking ring comprises a ring body, and the front end of the ring body is provided with a conical body which can be inserted into the conical socket. The quick-connection plug can realize the fixed connection of the pipe bodies, the rubber pipes and the pipe bodies with different sizes, has high connection strength and good sealing effect, and can effectively prevent liquid leakage.

Description

Novel quick-connect plug

Technical Field

The utility model relates to a quick-connection device, in particular to a novel quick-connection plug.

Background

In a conveying pipeline for conveying low-pressure liquid, such as a cooling liquid pipeline and a low-pressure oil return pipe of a hydraulic system, the requirement on the sealing performance of the pipeline is high in practical application, and the leakage phenomenon is not allowed to exist. At present, in the connection of the pipelines, a fastening mode of threads or clamps is adopted, and in actual operation, it is found that in the assembly process of the pipelines, a spanner cannot be used for fastening a connecting bolt between two pipelines or a clamp cannot be used for installing the clamps due to the limitation of space size, so that great inconvenience is brought to related operation.

Disclosure of Invention

The utility model aims to: the utility model aims to provide a novel quick-connect plug so as to improve the connection speed and the sealing performance of the quick-connect plug.

The technical scheme is as follows: the utility model relates to a novel quick-connect plug, which comprises:

a plug and a locking ring slidably connected to the tube;

the plug comprises a cannula, wherein the outer circumference of a connecting end of the cannula is recessed inwards to form a mounting step, an external thread area is formed in the circumferential direction of the mounting step, and a conical socket is arranged at the inner circumference of a connecting port of the mounting step;

the locking ring comprises a ring body, and the front end of the ring body is provided with a conical body which can be inserted into the conical socket.

Preferably, a connecting piece is arranged corresponding to the plug, the connecting piece comprises a sleeve, an internal thread area matched with the external thread area is arranged at the connecting end of the sleeve, a blocking step is arranged at the root of the internal thread area of the sleeve, and the sleeve is in threaded connection with the cannula so as to extrude the locking ring to move forward and be inserted into the conical socket through the blocking step.

Preferably, the outer end of the sleeve is provided with a threaded cavity, and a connecting end is connected in the threaded cavity in a threaded manner; the connecting end head comprises a screwing nut, a thread head arranged at the front end of the screwing nut and a connecting rubber head arranged at the rear end of the rotating nut.

Preferably, a connecting pipe is arranged corresponding to the plug, an inner threaded area matched with the outer threaded area is arranged at the connecting end of the connecting pipe, a blocking step is arranged at the root of the inner threaded area of the connecting pipe, and the connecting pipe is in threaded connection with the insertion pipe so as to extrude the locking ring to move forwards through the blocking step and be inserted into the conical socket; the medium runner internal diameter of connecting pipe is less than the intubate internal diameter.

Preferably, the pipe body is a third pipe body, an annular clamping groove for clamping the locking ring is formed in the inner end of the third pipe body, and a plurality of second expansion joints are formed in the third pipe body along the circumference of the annular clamping groove; and the outer end of the third pipe body is provided with a mounting plug.

Preferably, the outer ends of the insertion pipe and the sleeve are respectively provided with a first clamping groove and a clamping ring clamped in the first clamping groove, and the inner ring of the clamping ring is clamped with a dustproof ring; the cannula and the sleeve are positioned at the inner side of the first clamping groove and are also provided with a second clamping groove, and a sealing ring A is clamped in the second clamping groove.

Preferably, a sealing ring B is sleeved outside the root of the mounting step; the sleeve is provided with a clamping ring at the outer end of the internal thread region, and the sealing ring B can be clamped into the clamping ring in an interference manner.

Preferably, the locking ring is of a C-shaped structure; a first expansion joint is radially arranged along the periphery of the ring body and the cone.

Preferably, the locking ring is provided with a plurality of first expansion joints along the circumferential direction of the conical body.

Preferably, at least one flexible convex ring is arranged on the inner periphery of the locking ring along the axial direction.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the quick-connection plug, in the threaded connection process of the sleeve and the insertion pipe, the sleeve can push the ring body at the rear end of the locking ring to move forwards through the blocking step so as to drive the conical body to be inserted into the conical socket, the conical body can be completely inserted into the conical socket after the insertion pipe and the sleeve are connected in place, and the fixed connection of the first pipe body and the second pipe body is realized through the extrusion of the outer conical surface of the locking ring and the inner conical surface of the conical socket;

2. the outer ends of the insertion pipe and the sleeve are correspondingly provided with the dustproof ring and the sealing ring A, the dustproof ring and the sealing ring A are in interference fit with the first pipe body or the second pipe body, the sealing connection between the insertion pipe and the sleeve and the periphery of the pipe to be connected is realized through the cooperation of the dustproof ring and the sealing ring A, and the sealing property of the connection between the quick-connection plug and the first pipe body and the second pipe body is improved;

3. the outer end of the sleeve, which is positioned in the internal thread area, is provided with a clamping ring, the periphery of the root part of the installation step is sleeved with a sealing ring B, and after the plug and the connecting piece are connected in place through threads, the sealing ring B can be clamped into the clamping ring, so that the joint of the plug and the connecting piece is sealed, and the sealing performance of the quick-connection plug is further improved;

4. the outer end of the connecting piece is provided with a connecting end in a matching way, and the connecting end can be used for fixedly connecting the rubber hose, so that the hard pipe and the rubber hose are fixedly connected;

5. the plug also can be provided with the connecting pipe in a matching way, and the sealing connection of the first pipe body and the connecting pipe is realized through the matching of the connecting pipe and the plug, so that the sealing connection of the connecting pipe bodies to be connected in different sizes is met.

Drawings

Fig. 1 is a schematic view of a first view angle structure of a plug and a locking ring to be connected according to the present utility model;

FIG. 2 is a schematic view of a second view of the plug of FIG. 1 and a locking ring to be connected;

FIG. 3 is a schematic view of the plug of FIG. 1 and a locking ring, and a connector to be connected;

FIG. 4 is an axial structural cross-sectional view of the quick connect plug connection of FIG. 3;

FIG. 5 is a cross-sectional view of the plug structure of FIG. 1;

FIG. 6 is a cross-sectional view of the connector structure of FIG. 4;

FIG. 7 is a cross-sectional view of another embodiment of the connector of FIG. 3;

FIG. 8 is a schematic diagram showing a connection state of the plug and the connection pipe in FIG. 1;

FIG. 9 is a schematic view showing a connection state of the first pipe body and the connecting pipe replaced by the third pipe body in FIG. 8;

fig. 10 is a schematic view showing a connection state of the third pipe body and the locking ring in fig. 9.

Reference numerals:

100. a plug is connected quickly;

1. a plug; 101. a cannula; 102. an annular groove; 103. a first clamping groove; 104. mounting steps; 105. an external thread region; 106. a second clamping groove; 107. a tapered socket;

2. a connecting piece; 201. a sleeve; 202. a blocking step; 203. an internally threaded region; 204. a collar; 205. a threaded cavity;

3. a locking ring; 301. a ring body; 302. a cone; 303. a first expansion joint; 304. a flexible collar;

4. a first tube body; 5. a second tube body; 6. a clasp; 7. a dust ring; 8. a sealing ring A;

9. a connecting end; 901. a thread head; 902. screwing the nut; 903. connecting the rubber heads;

10. a connecting pipe; 1001. a media flow path;

11. a sealing ring B;

12. a third tube body; 121. an annular clamping groove; 122. a second expansion joint; 123. and installing a plug.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1 to 10 of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the utility model, fall within the scope of protection of the utility model.

Example 1:

as shown in fig. 1 to 6, a novel quick connector 100 of the present utility model comprises a plug 1 sleeved on a first pipe body 4, a connecting piece 2 sleeved on a second pipe body 5, and a locking ring 3; the first tube body 4 and the second tube body 5 have the same diameter size. The plug 1 comprises a cannula 101, the inner diameter of the cannula 101 is matched with the outer diameter of the first tube body, the outer circumference of the connecting end of the cannula 101 is recessed inwards to form a mounting step 104, an external threaded area 105 is arranged on the circumference of the mounting step, and a conical socket 107 is arranged on the inner circumference of the connecting port of the mounting step 104. The locking ring 3 comprises a ring body 301, a conical body 302 which can be inserted into the conical socket is arranged at the front end of the ring body 301, the locking ring 3 can slide forwards or backwards along the second pipe body 5, and after the conical body 302 at the front end of the locking ring 3 is inserted into the conical socket 107 forwards, the fixed connection between the first pipe body and the second pipe body can be realized through the mutual extrusion of the locking ring 3 and the conical surface of the insertion pipe.

The connecting piece 2 comprises a sleeve 201, an inner threaded area 203 matched with the outer threaded area 105 is arranged at the connecting end of the sleeve 201, a blocking step 202 is arranged at the root of the inner threaded area 203 of the sleeve 201, in the process of threaded connection of the sleeve 201 and the insertion pipe 101, the sleeve 201 can squeeze a ring body 301 at the rear end of a locking ring through the blocking step 202 to move forwards so as to drive a conical body 302 to be inserted into the conical insertion hole 107, when the sleeve and the insertion pipe are connected in place, the conical body 302 can be completely inserted into the conical insertion hole 107, and the fixed connection of the first pipe body 4 and the second pipe body 5 is realized through the outer conical surface of the locking ring and the inner conical surface of the conical insertion hole 107.

Example 2:

based on embodiment 1, as shown in fig. 7, a threaded cavity 205 is formed at the outer end of the sleeve 201, and a connection end 9 is connected to the threaded cavity 205 by internal threads. The connecting end 9 comprises a screwing nut 902, a thread head 901 arranged at the front end of the screwing nut and a connecting rubber head 903 arranged at the rear end of the screwing nut, the connecting end 9 can be fixedly connected in the thread cavity 205 of the sleeve 201 through the thread head 901, and the connecting rubber head 903 can be fixedly connected with a rubber hose.

In this embodiment, the plug 1, the connecting piece 2 and the locking ring 3 are all slidably connected on the first pipe body 4, the plug and the cannula can be fixedly and hermetically connected, the sleeve 201 and the connecting end 9 cooperate to realize the quick and fixed connection between the rubber hose and the first pipe body 4, and this embodiment can satisfy the quick and fixed connection between the hard pipe and the rubber pipe.

Example 3:

based on embodiment 1, as shown in fig. 8, a connection pipe 10 is provided corresponding to the plug 1, and the connection pipe 10 may have a difference in both inner diameter and outer diameter from the first pipe body 4. Specifically, the connection mode of the connection pipe 10 and the plug 1 is similar to that of the connection mode of the plug 1 and the connection piece 2 in embodiment 1, that is, the connection end of the connection pipe 10 is provided with an internal thread area matched with the external thread area 105, the root of the internal thread area of the connection pipe 10 is provided with a blocking step, and when the connection pipe 10 is in threaded connection with the cannula 101, the locking ring can be extruded to move forward and be inserted into the conical socket 107 through the blocking step, so that the sealing connection between the plug 1 and the connection pipe 10 is realized. In this embodiment, the medium flow passage 1001 of the connection tube 10 has an inner diameter smaller than that of the insertion tube 101 and an outer diameter larger than that of the first tube body 4, so that various types of quick connection can be satisfied.

Example 4:

based on embodiment 3, as shown in fig. 9-10, the first pipe body 4 may be replaced by a third pipe body 12, the inner end of the third pipe body 12 is provided with an annular clamping groove 121 for clamping the locking ring 3, a plurality of second expansion and shrinkage seams 122 are formed along the circumference of the annular clamping groove 121 on the third pipe body, the second expansion and shrinkage seams 122 can enable the part of the pipe body to be concave inwards, so that the installation of the locking ring 3 is satisfied, the locking ring 3 can be initially positioned on the annular clamping groove 121 of the third pipe body 12 in the process of connecting the third pipe body 12 with the connecting pipe 10, dislocation in the process of connecting with the connecting pipe 10 is avoided, and the convenience of the quick connector 100 is improved. The outer end of the third pipe body 12 is provided with a mounting plug 123, and the circumference of the mounting plug 123 is provided with a plurality of annular grooves, so that the mounting plug 123 is convenient to be fixedly connected with other hoses.

Example 5:

based on the embodiments 1-4, as shown in 4-8, a first clamping groove 103 and a clamping ring 6 clamped in the first clamping groove are respectively arranged at the outer ends of the insertion tube 101 and the sleeve 201, and a dust ring 7 is clamped in the inner ring of the clamping ring 6; the cannula 101 and the sleeve 201 are positioned at the inner side of the first clamping groove and are also provided with a second clamping groove 106, and a sealing ring A8 is clamped in the second clamping groove 106. The dustproof ring 7 and the sealing ring A8 are annular rubber rings with circular cross sections, the dustproof ring 7 and the sealing ring A8 are in interference fit with the first pipe body 4 or the second pipe body 5, and the sealing connection of the cannula 101, the sleeve 201 and the periphery of the to-be-connected pipe body is realized through the cooperation of the dustproof ring and the sealing ring A. An annular groove 102 is arranged at the inlet end of the cannula and the sleeve, the diameter of the annular groove 102 is larger than the outer diameters of the first pipe body 4 and the second pipe body 5, and the quick connection of the plug and the connecting piece with the first pipe body 4 and the second pipe body 5 is facilitated.

As shown in fig. 4, a sealing ring B11 is sleeved on the periphery of the root of the mounting step 104, and the sealing ring B11 is an annular rubber ring with a circular cross section. The collar 204 is arranged at the outer end of the sleeve 201 in the internal thread area, and after the plug 1 is connected with the connecting piece 2 or the connecting pipe 10 in place through threads, the sealing ring B11 can be clamped into the collar 204, so that the joint of the plug and the cannula or the connecting pipe is sealed, and the sealing connection performance of the quick-connection plug is further improved.

Example 6:

based on embodiments 1-4, as shown in fig. 1-2, the locking ring 3 has a C-shaped structure, that is, a first expansion joint 303 is radially formed along the peripheries of the ring body 301 and the cone 302, and the locking ring 3 with such a structure can facilitate the locking ring to move forward or backward along the second pipe body 5.

Example 7:

based on embodiments 1-4, as shown in fig. 3, the locking ring 3 is provided with a plurality of first expansion slits 303 along the circumference of the cone 302, and the locking ring 3 with such a structure can facilitate the advancing or retreating movement of the locking ring along the first pipe body 4 or the second pipe body 5.

Example 8:

based on embodiment 5 and embodiment 6, as shown in fig. 6, the inner circumference of the locking ring 3 is provided with at least one flexible bead 304 along the axial direction; specifically, the number of the flexible convex rings 304 arranged on the inner periphery of the locking ring 3 is two, and when the conical body 302 is extruded to be in interference connection with the outer periphery of the first pipe body 4 or the second pipe body 5, the sealing performance of the locking ring 3 and the plug 1 is improved.

It should be noted that, in the above embodiments 1 to 8, only typical structures in many embodiments of the present utility model are shown, and different embodiment structures may be formed by combining the quick connector structures according to different embodiments, which will not be described again.

The working principle or the working method of the utility model:

when in use, the plug 1 is sleeved on the first pipe body 4, and the locking ring 3 and the connecting piece 2 are sleeved on the second pipe body 5; then the ends to be connected of the first pipe body 4 and the second pipe body 5 are butted together, the locking ring 3 is pushed to move forward and insert into the conical socket 107 of the cannula 101, then the connecting piece 2 is pushed to move forward and be connected with the external threaded area 105 of the cannula through the internal threaded area 203 of the connecting piece, and the blocking step 202 in the sleeve can squeeze and push the locking ring 3 to move forward and tightly insert into the conical socket 107 in the process of moving forward the connecting piece 2, so that the fixed connection of the first pipe body 4 and the second pipe body 5 is realized.

The outer end of the connecting piece 2 can be provided with a threaded cavity 205 and a connecting end 9 in threaded connection with the threaded cavity in a matching way, and the connecting end 9 can be fixedly connected with a rubber hose, so that the fixed connection of the hard pipe and the rubber hose is realized.

The connecting piece 2 can also be replaced by the connecting pipe 10, and the connecting pipe 10 adopts a connecting mode similar to the connecting piece 2, so that the connection of pipe bodies without the size and the type is realized.

The foregoing is a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model and are intended to be comprehended within the scope of the present utility model.

Claims (10)

1. A novel quick connect plug, characterized in that the quick connect plug (100) comprises:

a plug (1) and a locking ring (3) which are connected on the pipe body in a sliding way;

the plug (1) comprises a cannula (101), wherein the outer circumference of the connecting end of the cannula (101) is recessed inwards to form a mounting step (104), an external thread area (105) is arranged on the circumference of the mounting step, and a conical socket (107) is arranged on the inner circumference of the connecting port of the mounting step (104);

the locking ring (3) comprises a ring body (301), and a conical body (302) which can be inserted into the conical socket is arranged at the front end of the ring body (301).

2. The novel quick connector plug according to claim 1, wherein a connecting piece (2) is arranged corresponding to the plug (1), the connecting piece (2) comprises a sleeve (201), an inner threaded area (203) matched with the outer threaded area (105) is arranged at the connecting end of the sleeve (201), a blocking step (202) is arranged at the root of the inner threaded area (203) of the sleeve (201), and the sleeve (201) is in threaded connection with the insertion tube (101) to extrude the locking ring to move forward through the blocking step (202) and insert into the conical socket (107).

3. The novel quick-connect plug according to claim 2, wherein the outer end of the sleeve (201) is provided with a threaded cavity (205), and the threaded cavity (205) is internally connected with a connecting end head (9) in a threaded manner; the connecting end head (9) comprises a screwing nut (902), a thread head (901) arranged at the front end of the screwing nut and a connecting rubber head (903) arranged at the rear end of the screwing nut.

4. The novel quick connector plug according to claim 1, wherein a connecting pipe (10) is arranged corresponding to the plug (1), an inner threaded area matched with the outer threaded area (105) is arranged at the connecting end of the connecting pipe (10), a blocking step is arranged at the root of the inner threaded area of the connecting pipe (10), and the connecting pipe (10) is in threaded connection with the insertion pipe (101) so as to press the locking ring to move forwards through the blocking step and be inserted into the conical socket (107); the inner diameter of a medium runner (1001) of the connecting pipe (10) is smaller than the inner diameter of the cannula (101).

5. The novel quick connector plug according to claim 4, wherein the pipe body is a third pipe body (12), an annular clamping groove (121) for clamping the locking ring (3) is formed in the inner end of the third pipe body (12), and a plurality of second expansion joints (122) are formed in the third pipe body along the circumference of the annular clamping groove (121); the outer end of the third pipe body (12) is provided with a mounting plug (123).

6. The novel quick connector plug according to claim 2, wherein the outer ends of the insertion tube (101) and the sleeve (201) are respectively provided with a first clamping groove (103) and a clamping ring (6) clamped in the first clamping groove, and a dust ring (7) is clamped in an inner ring of the clamping ring (6); the cannula (101) and the sleeve (201) are positioned at the inner side of the first clamping groove and are also provided with a second clamping groove (106), and a sealing ring A (8) is clamped in the second clamping groove (106).

7. The novel quick connector plug according to claim 2, wherein the root of the mounting step (104) is externally sleeved with a sealing ring B (11); the sleeve (201) is provided with a clamping ring (204) at the outer end of the internal thread region, and the sealing ring B (11) can be clamped into the clamping ring (204) in an interference manner.

8. The novel quick connect plug according to claim 1, wherein the locking ring (3) is of C-type configuration; a first expansion joint (303) is radially arranged along the periphery of the ring body (301) and the cone-shaped body (302).

9. The novel quick connector plug according to claim 1, wherein the locking ring (3) is provided with a plurality of first expansion slits (303) along the circumferential direction of the cone (302).

10. A new quick connect plug according to claim 8 or 9, characterized in that the locking ring (3) is provided with at least one flexible collar (304) in the axial direction at its inner periphery.