Telescopic quick coupler

Abstract

The utility model provides a telescopic quick coupler. The telescopic quick coupler comprises a tubular quick coupler and a tubular telescopic coupler, the quick joint is a socket joint or a spigot joint; a socket structure is arranged at one end of the socket joint, and an insertion hole penetrating through the inner wall of the socket structure is formed in the socket structure; a socket structure is arranged at one end of the socket connector, and a limiting groove is formed in the outer wall of the socket structure; the other end of the socket joint and the other end of the spigot joint form connecting ends matched with the telescopic joint; the telescopic joint comprises a telescopic piece and an external joint, and one end of the telescopic piece is slidably connected to the connecting end of the socket joint or the spigot joint in a sleeving manner; the external connector is connected to the other end of the telescopic piece. The quick connector and the telescopic connector are combined, so that products in the water meter box can be installed and maintained more flexibly and quickly, and interference is not prone to occurring when the water meter box is installed in a limited water meter box space.

Description

Technical Field

[0001] The utility model relates to the technical field of waterway joints, in particular to a telescopic quick-connect joint. Background Art

[0002] Various valves (such as ball valves, gate valves, pressure reducing valves, check valves, etc.) need to be installed before and after the household water meter. These valves are usually connected in series with the water meter. The prior art uses a threaded connection method for connection. This connection method requires winding raw tape during actual installation, which is not only cumbersome, but also requires high experience of installers during the winding process of the raw tape. Improper use of the raw tape will directly affect the installation quality and is prone to leakage points.

[0003] Therefore, the inventor proposed a method of directly inserting and docking valves with each other for installation. However, due to the limitation of the installation space, when the series-connected valves are docked with the water meter (threaded joint), there is often a situation where the installation spacing is uncontrollable.

[0004] Based on this, this application is proposed. Content of the Utility Model

[0005] The utility model discloses a telescopic quick-connect joint, aiming to overcome the problem of uncontrollable installation spacing existing in the prior art.

[0006] With the above concept, the technical solution adopted by the utility model is as follows:

[0007] The telescopic quick-connect joint includes a tubular quick-connect joint and a tubular telescopic joint;

[0008] The quick-connect joint is a socket joint or a spigot joint; one end of the socket joint is provided with a socket structure, and the socket structure is provided with a jack penetrating its inner wall; one end of the spigot joint is provided with a spigot structure, and a limiting groove is provided on the outer wall of the spigot structure; the other ends of the socket joint and the spigot joint both form an interface end for cooperating with the telescopic joint;

[0009] The telescopic joint includes a telescopic member and an external joint. One end of the telescopic member is slidably sleeved on the interface end of the socket joint or the spigot joint; the external joint is connected to the other end of the telescopic member.

[0010] In a recommended embodiment, the socket structure is provided with a socket seat protruding from its side wall, the jack is opened in the socket seat, and at least one end leads to the outside. The setting of the socket seat can increase the stability of the socket and spigot structure.

[0011] In a recommended embodiment, the number of the socket seats is one. It is provided with a single jack, which can be used in cooperation with a single plug during use.

[0012] In a recommended embodiment, the limiting groove surrounds the outer wall of the socket structure. During use, there is no need to adjust the relative angle, which facilitates the insertion of the bolt.

[0013] In a recommended embodiment, the socket structure further includes at least one first sealing ring, which is sleeved on the outer wall of the socket structure, and the first sealing ring is located between the limiting groove and the end face of the socket structure. After socket connection, mutual sealing can be ensured.

[0014] In a recommended embodiment, the telescopic member extends into the socket joint or the spigot joint in a sealed connection manner.

[0015] In a recommended embodiment, the telescopic joint further includes a compression nut and a second sealing ring. The compression nut is sleeved outside the telescopic member. It includes an axial threaded section and a radial stop section. The threaded section is fixedly connected to the connection end, and the second sealing ring is pressed between the end face of the connection end and the stop section. The above method of cooperating with the end face sealing through the compression nut has high reliability and can ensure the sealing effect.

[0016] In a recommended embodiment, the telescopic quick-connect joint further includes a limiting component. The limiting component includes a retaining ring protruding from the outer wall of the telescopic member, a limiting portion for preventing the telescopic member from extending deeply, and a limiting ring for preventing the telescopic member from disengaging. The limiting portion protrudes from the inner wall of the socket joint or the spigot joint, the limiting ring is located at the port of the connection end, and the retaining ring is axially limited between the limiting portion and the limiting ring. With the above structure, on the one hand, it can prevent the telescopic member from extending too deeply, and on the other hand, it can ensure that the telescopic member and the socket joint or the spigot joint always maintain a connected state.

[0017] In a recommended embodiment, an annular groove is formed inside the end face of the connection end. The limiting ring is installed in the groove, and the limiting ring is flush with the end face of the connection end. The second sealing ring abuts against both the end face of the connection end and the limiting ring at the same time. The second sealing ring can be effectively protected to prevent it from being damaged.

[0018] In a recommended embodiment, the external joint is a union nut. It is used to dock with traditional threaded connection structures (such as water meters).

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] 1. For the telescopic quick-connect joint of the present utility model, the quick-disassembly and assembly with the valve can be realized through the quick-connect joint, and the telescopic installation with the water meter can be realized in combination with the telescopic joint, that is, it can be adjusted in the length direction. The combination of the quick-connect joint and the telescopic joint can make the installation and maintenance of products in the water meter box more flexible and fast, and in the limited space of the water meter box, the installation is not likely to cause interference.

[0021] 2. The telescopic quick-connect fitting of the present utility model replaces the conventional threaded connection type. When installing, there is no need to wrap the raw material tape. It is not only simple to install, but also can greatly shorten the installation time. At the same time, the connection leakage points are reduced, and the connection reliability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an axial structure schematic diagram of the first embodiment.

[0023] Figure 2 It is a structural schematic diagram after docking of the first embodiment.

[0024] Figure 3 It is Figure 2 A cross-sectional view taken along line C-C in

[0025] Figure 4 It is a sectional structural schematic diagram of the second embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of description, only parts related to the present utility model are shown in the drawings, rather than all the structures.

[0027] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0029] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for differentiation in description and do not have special meanings.

[0030] Embodiment 1

[0031] Referring simultaneously to Figure 1 、 Figure 2 and Figure 3 , a telescopic quick-connect fitting includes a tubular quick-connect fitting and a tubular telescopic joint 1. In this embodiment, the quick-connect fitting is a socket joint 2. One end of the socket joint 2 is provided with a socket structure 21, and a limiting groove 211 is provided on the outer wall of the socket structure; the other end of the socket joint 2 forms an abutting end 22 that cooperates with the telescopic joint 1.

[0032] As Figure 1 shown, the left side of the socket joint 2 is the socket structure 21, and the right side of the socket joint 2 is the abutting end 22. A first sealing ring 212 is provided on the socket structure 21. The first sealing ring 212 is sleeved on the outer wall of the socket structure 21, and the first sealing ring 212 is located between the limiting groove 211 and the end face 210 of the socket structure 21. The number of the first sealing rings 212 is not limited to 1. In order to achieve a better sealing effect, the number of the first sealing rings 212 can also be multiple. In this embodiment, an external thread is provided on the outer wall of the abutting end 22, and an annular convex ring 23 is protruded at the junction of the abutting end 22 and the socket structure 21. The convex ring 23 is used for axial limiting during assembly.

[0033] The telescopic joint 1 includes a telescopic member 11 and an external joint 12. One end of the telescopic member 11 is slidably sleeved on the abutting end 22 of the socket joint 2; the external joint 12 in this embodiment is a union nut, which is connected to the other end of the telescopic member 11 and is used for mating connection with a water meter (not shown in the figure) or other traditional threaded structures.

[0034] The telescopic member 11 is hermetically connected and extends into the abutting end 22 of the socket joint 2. In this embodiment, the telescopic member 11 and the abutting end 22 are sealed by an end face seal (of course, other sealing methods can also be used for sealing).

[0035] Specifically, the expansion joint 1 further includes a compression nut 13 and a second sealing ring 14. The compression nut 13 is sleeved outside the telescopic member 11. It includes an axial threaded section 131 and a radial stop section 132. The threaded section 131 is fixedly connected to the connection end 22. The second sealing ring 14 is pressed between the end face of the connection end 22 and the stop section 132. The above method of cooperating with end face sealing through the compression nut 131 has high reliability and can ensure the sealing effect.

[0036] In addition, in order to prevent the telescopic member 11 from penetrating too deeply into the socket joint 2 and at the same time ensure that the telescopic member 11 and the socket joint 2 always remain connected, the expansion quick-connect joint of this embodiment further includes a limiting component.

[0037] The limiting component includes a retaining ring 31, a limiting portion 32 and a limiting ring 33. An annular groove (not marked in the figure) is formed on the outer wall of the telescopic member 11. The retaining ring 31 is a C-shaped retaining ring. The retaining ring 31 is clamped in the annular groove, and after installation, the retaining ring 31 protrudes from the outer wall of the telescopic member 11. The limiting portion 32 protrudes from the inner wall of the socket joint 2. In this embodiment, the limiting portion 32 is located in the middle of the socket structure 21. In addition, in order to protect the second sealing ring 14 and prevent the second sealing ring 14 from being damaged, an annular groove (not marked in the figure) is formed on the inner side of the end face of the connection end 22 of this embodiment. The limiting ring 33 is installed in the groove, and the limiting ring 33 is flush with the end face of the connection end 22. The second sealing ring 14 abuts against the end face of the connection end 22 and the limiting ring 33 at the same time. After installation, the limiting ring 33 is located at the port of the connection end 22, and the retaining ring 31 is axially limited between the limiting portion 32 and the limiting ring 33.

[0038] Continue to refer to Figure 2 and Figure 3 , during installation, a pipe joint of a valve (not shown in the figure) forms a socket structure 4'. A jack 41' penetrating through its inner wall is provided on the socket structure 4'. The jack 41' shown in the figure is close to the side face of the socket structure 4'. The specific installation process is as follows. First, insert the socket joint 2 into the socket structure 4' of the valve until the convex ring 23 abuts against the end face of the socket structure 4'. At this time, the jack 41' and the limiting groove 211 are just axially aligned. Then insert a single pin 5 through the jack 41' so that the single pin 5 is limited in both the jack 41' and the limiting groove 211, and the docking of the valve and the socket joint 2 can be completed. In order to facilitate the insertion of the single pin 5, the limiting groove 211 surrounds the outer wall of the socket structure 21.

[0039] Embodiment 2

[0040] Refer to Figure 4, the structure of the second embodiment is basically the same as that of the first embodiment above. The main difference is that the quick-connect fitting in this embodiment is a socket joint 6. One end of the socket joint 6 is provided with a socket structure 61, and the other end of the socket joint 6 forms an adapter end 62. A plug socket 611 protruding from its side wall is provided on the socket structure 61, and a socket hole 610 (a through hole in this embodiment) penetrating the inner wall of the socket structure 61 is provided in the plug socket 611. As can be seen from the figure, the pipe joint of the valve docked with it forms a spigot structure 2'. During installation, the spigot structure 2' extends into the socket structure 61 of the socket joint 6 and is axially limited by a single pin (not shown in the figure).

[0041] The above embodiments only illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, there are various changes and modifications to the present invention, and these changes and modifications all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Telescopic quick-connect fitting, characterized in that: It includes a tubular quick-connect fitting and a tubular telescopic joint; The quick-connect fitting is a socket joint or a spigot joint; one end of the socket joint is provided with a socket structure, and a jack penetrating its inner wall is opened in the socket structure; one end of the spigot joint is provided with a spigot structure, and a limiting groove is arranged on the outer wall of the spigot structure; the other ends of the socket joint and the spigot joint both form a connection end for cooperating with the telescopic joint; The telescopic joint includes a telescopic member and an external joint, and one end of the telescopic member is slidably sleeved on the connection end of the socket joint or the spigot joint; the external joint is connected to the other end of the telescopic member.

2. The telescopic quick-connect fitting according to claim 1, characterized in that: A plug socket protruding from the side wall is arranged on the socket structure, the jack is opened in the plug socket, and at least one end leads to the outside.

3. The telescopic quick-connect fitting according to claim 2, characterized in that: The number of the plug sockets is one.

4. The telescopic quick-connect fitting according to claim 1, wherein: The limiting groove surrounds the outer wall of the spigot structure.

5. The telescopic quick-connect fitting according to claim 4, wherein: The spigot structure further includes at least one first sealing ring, the first sealing ring is sleeved on the outer wall of the spigot structure, and the first sealing ring is located between the limiting groove and the end face of the spigot structure.

6. The telescopic quick-connect fitting according to claim 1, wherein: The telescopic member is hermetically connected and extends into the socket joint or the spigot joint.

7. The telescopic quick-connect fitting according to claim 6, characterized in that: The telescopic joint further includes a compression nut and a second sealing ring, the compression nut is sleeved on the telescopic member, and it includes an axial threaded section and a radial stop section, the threaded section is fixedly connected to the connection end, and the second sealing ring is pressed between the end face of the connection end and the stop section.

8. The telescopic quick-connect fitting according to claim 7, characterized in that: The telescopic quick-installation joint further includes a limiting component, the limiting component includes a retaining ring protruding from the outer wall of the telescopic member, a limiting part for preventing the telescopic member from going deep, and a limiting ring for preventing the telescopic member from coming out, the limiting part protrudes from the inner wall of the socket joint or the spigot joint, the limiting ring is located at the port of the connection end, and the retaining ring is axially limited between the limiting part and the limiting ring.

9. The telescopic quick-connect fitting according to claim 8, wherein: An annular groove is opened on the inner side of the end face of the connection end, the limiting ring is installed in the groove, and the limiting ring is flush with the end face of the connection end, and the second sealing ring abuts against the end face of the connection end and the limiting ring at the same time.

10. The telescopic quick-connect fitting according to claim 1, characterized in that: The external joint is a union nut.

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