WO2022083640A1

WO2022083640A1 - Anti-disassembly connector and anti-disassembly connecting assembly

Info

Publication number: WO2022083640A1
Application number: PCT/CN2021/124983
Authority: WO
Inventors: 楼峰; 陈狄永; 周峰; 陈玮能
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2020-10-22
Filing date: 2021-10-20
Publication date: 2022-04-28
Also published as: KR20230066637A; JP2023544958A

Abstract

An anti-disassembly connector (100) and an anti-disassembly connecting assembly (200). The anti-disassembly connector (100) comprises a connecting section (10) and an anti-disassembly section (20) which are connected to each other. The connecting section (10) is used for being connected to a joint (210) or a nut. The anti-disassembly section (20) comprises a protecting part (21) and an anti-disassembly part (22) which are connected to each other. The anti-disassembly connector (100) is internally provided with a first through hole (30), the protecting part (21) can sleeve onto a pipe body by means of the first through hole (30), the anti-disassembly part (22) is arranged at an end part or an outer peripheral wall of the protecting part (21) in a protruded manner, and the anti-disassembly part (22) is provided with a stop face (221) and a sliding face (222) which are arranged away from each other in the circumferential direction of the protecting part (21).

Description

Anti-disassembly connecting pieces and anti-disassembling connecting components

Related applications

This application requires the application filed on October 22, 2020, the application number is 202022368227.5, and the name of the invention is "anti-disassembly connector and anti-disassembly connecting assembly", and the application filed on June 11, 2021, the application number is 202121318736.5, and the name of the invention is " Anti-disassembly connector", filed on June 11, 2021, the application number is 202121318387.7, the priority of the Chinese patent application titled "anti-disassembly connector", the entire content of which is incorporated by reference in this application.

technical field

The present application relates to the technical field of pipe joints, and in particular, to an anti-disassembly connecting piece and an anti-disassembling connecting assembly.

Background technique

The tamper-proof connector is a device arranged in the air-conditioning equipment for connecting the refrigerant circulation circuit, and is used for sheathing and connecting the pipe body in the refrigerant circulation circuit. The ends of the existing tamper-proof connector are usually provided with several tamper-proof bumps. However, the tube body is easy to interfere or squeeze with the tamper-proof bump. For example, the copper tube with softer hardness will bend and interfere with the end edge of the tamper-proof bump due to external force, so that the tamper-proof bump is easy to scratch the tube body, aggravating the situation. Therefore, the risk of rupture of the outer wall of the pipe and the hidden danger of refrigerant leakage from the pipe body are caused, so the tamper-proof connector cannot protect the pipe body.

SUMMARY OF THE INVENTION

According to various embodiments of the present application, a tamper-resistant connector is provided, which includes an interconnected connecting section and a tamper-proof section, the connecting section is used to connect a joint or a nut, and the tamper-proof section includes an interconnected protective portion and an anti-disassembly part, the anti-disassembly connecting piece has a first through hole in it, the protection part can sleeve the pipe body through the first through hole, and the anti-disassembly part is protruded from the end of the protection part or an outer peripheral wall, and the anti-removal part has a stop surface and a sliding surface arranged opposite to each other along the circumferential direction of the protection part.

As a preferred solution of the present application, the number of the tamper-proof parts is multiple, and the plurality of tamper-proof parts are arranged at intervals along the circumferential direction of the protection part, and between two adjacent tamper-proof parts Form a clamping area.

As a preferred solution of the present application, the number of the tamper-proof parts is two, and the two tamper-proof parts are arranged symmetrically with the axis of the protection part as the center.

As a preferred solution of the present application, the tamper-proof part has a reinforcing part, and the reinforcing part forms a reinforcing end face at one end away from the connecting section, and the reinforcing end face is parallel to the end face of the connecting section or the protection part; The anti-disassembly connecting piece is further provided with a processing plane located between two adjacent anti-dismantling parts, and the processing plane and the reinforcing end face are spaced apart in the axial direction of the first through hole and are parallel to each other .

As a preferred solution of the present application, the edge of the stop surface away from the inner wall of the protection portion forms a force-bearing edge line; the length of the force-bearing edge line is L, 5mm<L<20mm; and/or, the force-bearing edge The force edge line is arranged parallel to the axis of the protection portion.

As a preferred solution of the present application, the included angle between the sliding surface and the radial section of the protection portion is α, and 20°≤α≤50°.

As a preferred solution of the present application, the stop surface is a flat surface, and the stop surface is arranged parallel to the axis of the protection portion; and/or the sliding surface is a curved surface.

As a preferred solution of the present application, the sliding surface is a curved surface, and the sliding surface is recessed toward the inside of the anti-removal portion.

As a preferred solution of the present application, the anti-dismantle portion further includes an outer arc surface, and the outer arc surface is located between the stop surface of the same anti-dismantle portion and the sliding surface of the same anti-dismantle portion. An arc transition surface is provided at the connection between the arc surface and the sliding surface; and/or an arc transition surface is provided at the connection between the stop surface and the outer peripheral wall of the protection portion; and/or the sliding surface is provided with an arc transition surface. A circular arc transition surface is provided at the connection between the surface and the outer peripheral wall of the protection portion.

As a preferred solution of the present application, the tamper-proof portion is protruded from the outer peripheral wall of the protection portion, the protection portion is a pipe body, and the height of the tamper-proof portion protruding from the outer peripheral wall of the protection portion is greater than the height of the outer peripheral wall of the protection portion. The thickness of the pipe wall of the protection part.

As a preferred solution of the present application, the protection portion is provided with a first chamfer, and the first chamfer is located between the inner wall surface of the first through hole and the end surface of the protection portion.

As a preferred solution of the present application, the tamper-proof portion is flush with the end surface of the protection portion, and the protection portion is closer to the axial center of the tamper-proof section than the tamper-proof portion.

As a preferred solution of the present application, the connecting section and the anti-dismantling section are integrally formed.

As a preferred solution of the present application, the first through hole further includes a limiting segment, and the inner diameter of the limiting segment varies along the axis direction of the tamper-proof connector, which can abut the outer peripheral wall of the pipe body and limit the protection The depth of the casing pipe body.

As a preferred solution of the present application, the inner diameter of the limiting section decreases in a direction close to the protection portion, and a second chamfer is further provided in the tamper-proof connector, and the second chamfer is located at the limit. The bit segment is relatively close to one side of the protection portion.

As a preferred solution of the present application, the connecting section is provided with a thread, and is fixedly matched with the joint through the thread; the thread is provided on the inner wall of the first through hole; or, the thread is provided on the connecting segment The outer peripheral wall of the screw thread is used for mating connection with the nut.

As a preferred solution of the present application, the outer diameters of the connecting section and the tamper-proof section are the same.

According to various embodiments of the present application, a tamper-resistant connection assembly is provided, which includes a joint or a nut, a second pipe, and the tamper-resistant connector provided by the present application, wherein the connecting segment is threadedly fixed with the joint or the nut, so that the The protection part is sleeved with the second pipe through the first through hole.

As a preferred solution of the present application, the outer peripheral wall of the second nozzle is disposed in close contact with the inner peripheral wall of the first through hole.

As a preferred solution of the present application, the first through hole further includes a limiting segment, and the inner diameter of the limiting segment decreases in a direction approaching the protection portion; one end of the second nozzle is provided with a second flared opening part, the outer peripheral wall of the second flaring part abuts against the inner peripheral wall of the limiting section.

Description of drawings

In order to better describe and illustrate embodiments and/or examples of those inventions disclosed herein, reference may be made to one or more of the accompanying drawings. The additional details or examples used to describe the drawings should not be construed as limiting the scope of any of the disclosed inventions, the presently described embodiments and/or examples, and the best mode presently understood of these inventions.

1 is a schematic perspective view of a first embodiment of a tamper-resistant connector provided by the application;

FIG. 2 is a schematic cross-sectional view of the anti-removal connector shown in FIG. 1 from a first perspective;

FIG. 3 is a schematic cross-sectional view of the anti-removal connector shown in FIG. 1 from a second viewing angle;

4 is a schematic perspective view of the first embodiment of the tamper-resistant connection assembly provided by the application;

Fig. 5 is the cutaway schematic diagram of the anti-disassembly connecting assembly shown in Fig. 4;

6 is a schematic perspective view of a second embodiment of the tamper-resistant connector provided by the application;

FIG. 7 is a schematic three-dimensional view of the anti-removal connector shown in FIG. 6 from another viewing angle;

8 is a schematic perspective view of a third embodiment of the tamper-proof connector provided by the application;

FIG. 9 is a schematic perspective view of the anti-removal connector shown in FIG. 8 from another viewing angle;

FIG. 10 is a front view of the anti-disassembly connector shown in FIG. 8;

Figure 11 is a top view of the tamper-proof connector shown in Figure 8;

Figure 12 is a half cross-sectional view of the tamper-evident connector shown in Figure 8;

Figure 13 is a right side view of the anti-disassembly connector shown in Figure 8;

FIG. 14 is a schematic perspective view of a second embodiment of the tamper-resistant connecting assembly provided by the application;

FIG. 15 is a schematic diagram of the tamper-evident connection assembly shown in FIG. 14 from another viewing angle;

FIG. 16 is a schematic cross-sectional view of the tamper-evident connecting assembly shown in FIG. 14 .

100, tamper-proof connector; 10, connecting section; 11, internal thread; 12, external thread; 13, processing plane; 20, tamper-proof section; 21, protection part; 22, tamper-proof part; 221, stop surface; 222, sliding surface; 223, stress edge; 224, reinforced end surface; 225, outer arc surface; 226, arc transition surface; 30, first through hole; 31, first chamfer; 32, limit section; 33 , the second chamfer; 34, the first hole; 35, the second hole; 200, the tamper-proof connection assembly; 210, the joint; 220, the first pipe; 2201, the first flare part; 230, the second pipe; , the second flared part.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the present application are for the purpose of describing particular embodiments only, and are not intended to limit the present application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The tamper-proof connector is a device installed in the air-conditioning equipment and used to connect the refrigerant circulation circuit, and is usually used in conjunction with the joint of the hollow structure. The anti-disassembly connecting piece is connected with one of the pipe bodies, the joint is connected with the other pipe body, and the joint and the anti-disassembling connecting piece are fixedly connected so that the two pipe bodies are communicated.

The ends of the existing tamper-proof connector are usually provided with several tamper-proof bumps. However, the tube body is easy to interfere or squeeze with the tamper-proof bump. For example, the copper tube with softer hardness will bend and interfere with the end edge of the tamper-proof bump due to external force, so that the tamper-proof bump is easy to scratch the tube body, aggravating the situation. Therefore, the risk of rupture of the outer wall of the pipe and the hidden danger of refrigerant leakage from the pipe body are caused, so the tamper-proof connector cannot protect the pipe body.

In view of this, the present application provides a tamper-resistant connector 100, which includes a connecting section 10 and a tamper-proof section 20 that are connected to each other. The tamper-proof section 20 includes a protection portion 21 and a tamper-proof portion 22 that are connected to each other. The radial direction of the part 21 is protruded from the end or the outer peripheral wall of the protection part 21 ;

Wherein, the connection section 10 is used for fixed connection with a hollow joint 210 or a nut, and the joint 210 or the nut can be connected to an external pipe body; the protection part 21 can be sleeved with another external pipe body through the first through hole 30; The part 22 is used for fixed fit or sliding fit with an external tool, and the anti-removal part 22 includes a stop surface 221 and a sliding surface 222 which are arranged away from each other along the circumferential direction of the protection part 21 .

The stop surface 221 is used to form a fixed fit with an external tool. The user applies static pressure to the stop surface 221 by rotating the external tool, and then applies a tightening torque to the tamper-resistant connector 100 to complete the tamper-resistant connector 100 and the joint 210 or nut. The sliding surface 222 is used to form a sliding fit with an external tool, so that the external tool cannot apply a loosening torque opposite to the direction of the above-mentioned tightening torque on the sliding surface 222, so that the anti-disassembly connector 100 obtains the anti-disassembly function.

Unless otherwise specified, the following external tools refer to the tools that directly cooperate with the tamper-resistant connector 100 and are used to tighten the tamper-resistant connector 100 to the joint 210 or the nut, but do not include other tools. For example, the external tools do not include Nut wrench for fixed fit with fitting 210 or nut.

Optionally, the connecting section 10 is provided with a thread, and the connecting section 10 is fixedly matched with the joint 210 or the nut having the hollow channel through the screw thread. After the two are fixedly connected, the first through hole 30 is communicated with the hollow channel or the nut hole of the joint 210. When the tamper-proof connector 100 is used in the refrigerant circulation circuit, the end of the joint 210 or the nut relatively far away from the tamper-proof connector 100 is connected to the pipe body, and the hole of the pipe body is connected with the hollow channel or nut hole of the joint 210 after the connection, and finally The above-mentioned pipe body hole communicates with the first through hole 30 , and the pipe body connecting the joint 210 or the nut communicates with the pipe body sleeved through the protection portion 21 .

The connection section 10 is provided with a thread, which is convenient for the user to apply a tightening torque to the tamper-resistant connector 100 through an external tool to gradually complete the fixed connection between the tamper-resistant connector 100 and the joint 210 or the nut, and the strength of the two after being fixed is higher, and it is not easy to Connection failed.

Referring to FIGS. 2 to 3 , in the first embodiment of the tamper-resistant connector 100 provided by the present application, the inner wall of the first through hole 30 located in the connecting section 10 is provided with an internal thread 11 , and the connecting section 10 passes through the first through hole 30 . The through hole 30 is sleeved with the joint 210 and is threadedly fixed with the joint 210 .

Referring to FIGS. 6 to 12 , in the second embodiment and the third embodiment of the tamper-proof connector provided by the present application, the outer peripheral wall of the connecting section 10 is provided with an external thread 12 , and the connecting section 10 extends into the nut After the hole is fixed with the nut thread.

It can be understood that the connecting segment 10 may not be provided with threads, that is, the connecting segment 10 may also be fixedly connected to the joint 210 in other ways, which will not be described in detail in this application.

Optionally, the connection section 10 and the anti-disassembly section 20 are integrally formed, and the anti-disassembly connecting piece 100 is an integrally formed structure.

Optionally, the protection portion 21 and the connecting section 10 are both cylindrical tube structures, and the two are coaxially arranged. The first through hole 30 includes a first hole 34 opened in the connecting section 10 and a The second hole 35, the first hole 34 and the second hole 35 are coaxially arranged. The inner thread 11 of the above-mentioned connecting section 10 is arranged on the inner wall of the first hole 34;

Please refer to Figure 1, Figure 6 and Figure 8. The protection part 21 is provided with a first chamfer 31 , and the first chamfer 31 is located between the inner wall surface of the first through hole 30 and the end surface of the protection part 21 , that is, the opening edge of the first through hole 30 on the end surface of the protection part 21 A first chamfer 31 is formed on the annular surface after the material is removed, and the first chamfer 31 may be either a rounded corner or a chamfered corner.

The setting of the first chamfer 31 can prevent the tube body from being bent due to external force and cause extrusion interference with the opening edge of the first through hole 30 on the end face of the protection portion 21, and reduce the effect of the opening edge of the first through hole 30 on the outer peripheral wall of the tube. Pressure, the tube body is not easy to be scratched or crushed. In addition, when the anti-removal connector 100 is welded to the pipe body protruding from the end of the protection portion 21 relatively far away from the connecting section 10, the first chamfer 31 and the outer peripheral wall of the pipe body are formed to form an annular groove, the annular groove Can be used to place solder rings.

Optionally, the number of the anti-dismantling parts 22 is multiple, the plurality of anti-dismantling parts 22 are arranged at intervals along the circumferential direction of the protection part 21, and formed between two adjacent anti-dismantling parts 22 for external tools to cooperate and extend clamping range. The stop surfaces 221 and the sliding surfaces 222 of the plurality of anti-dismantle portions 22 are arranged alternately in sequence along the circumferential direction of the protection portion 21 , that is, in the circumferential direction of the protection portion 21 , the plurality of anti-dismantle portions 22 slide according to the stop surfaces 211 - The surface 222-stop surface 221-sliding surface 222 are arranged in this way.

Optionally, the plurality of anti-removal parts 22 have the same shape and size, and are evenly distributed around the axis of the protection part 21 , so the multiple clamping sections have the same size and shape. In this way, the external tool can cooperate with the tamper-proof part 22 at any angle in the circumferential direction of the tamper-proof connector 100 .

Please refer to Figure 1, Figure 6 and Figure 8. In the first, second and third embodiments of the tamper-proof connector 100 provided by the present application, the number of tamper-proof parts 22 is two, and the axis of the two tamper-proof parts 22 is the axis of the protection part 21 . Centrosymmetric setup.

It can be understood that the number of the anti-removal part 22 may also be only one. When the number of the anti-removal portion 22 is one, the gap between the anti-removal portion 22 and the outer peripheral wall of the protection portion 21 forms a clamping section. For convenience of description, the structure of the tamper-proof connector 100 of the present application will be described in detail below by taking as an example that the tamper-proof portion 22 is multiple and the tamper-proof portion 22 is protruded from the outer peripheral wall of the protection portion 21 .

Optionally, the stop surface 221 is a plane, and the stop surface 221 is arranged parallel to the axis of the protection portion 21 ; the sliding surface 222 is a curved surface, and the sliding surface 222 is recessed toward the inside of the anti-removal portion 22 . Such a structure arrangement is more conducive to the sliding contact between the sliding surface 222 and the external tool, so that the external tool can be separated from the anti-removal portion 22 more quickly, and the anti-removal function of the anti-removal connector 100 is more remarkable.

The angle between the sliding surface 222 and the radial section of the protection portion 21 is α, α is less than 60°, and 20°≤α≤50°. Specifically, when the sliding surface 222 is a curved surface, the angle between the tangent at any point on the sliding surface 222 and the axis of the protection portion 21 is α, 20°≤α≤50°.

In order to improve the stability and force application efficiency when the external tool applies the tightening torque to the anti-removal connector 100, the stop surface 221 and the axis of the protection portion 21 are coplanar, that is, the plane where the stop surface 221 is located includes the protection portion 21 axis. In this way, the static pressure acting on the stop surface 221 can all be used to form the tightening torque for driving the anti-removal connector 100 and the joint 210 or the nut to be screwed.

Optionally, in order to improve the anti-removal effect of the anti-removal connector 100 , the sliding surface 222 is a spiral curved surface with the axis of the protection portion 21 as the surrounding center.

Optionally, the anti-removal part 22 is flush with the end surface of the protection part 21 , and the protection part 21 is closer to the axial center of the anti-removal section 20 than the anti-removal part 22 . Specifically, the axial length of the protection portion 21 is equal to the length of the anti-removal portion 22 extending along the axial direction of the protection portion 21 . Flat set. This arrangement can prevent the end of the anti-removal part 22 from pressing the pipe body passing through and extending out of the protection part 21 , thereby preventing the anti-removal part 22 from breaking and scratching the pipe body.

Of course, the anti-removal portion 22 may also not be flush with the end face of the protection portion 21. For example, when the anti-removal portion 22 is protruded on the end face of the protection portion 21, the anti-removal portion 22 is higher than the end face of the protection portion 21; In the axial direction of 100 , the end face of the protection portion 21 may also be higher than the anti-dismantle portion 22 .

Optionally, the height of the anti-removal portion 22 protruding from the outer peripheral wall of the protection portion 21 is greater than the thickness of the pipe wall of the protection portion 21 .

The anti-dismantling portion 22 further includes an outer arc surface 225 . The outer arc surface 225 is the part of the outer peripheral wall of the connecting section 10 that extends to the anti-dismantle portion 22 along the axis of the anti-dismantle connector 100 . between the stop surface 221 and the sliding surface 222 of the same anti-removal part 22 . The height of the tamper-proof part 22 protruding from the outer peripheral wall of the protection part 21 is the height difference between the outer arc surface 225 and the protection part 21 in the radial direction of the tamper-proof connector 100 , and the thickness of the pipe wall of the protection part 21 is the radius of the outer peripheral wall of the protection part 21 . The difference with the radius of the inner wall of the second channel 35 .

See Figures 8 to 12. The connection between the outer arc surface 225 and the sliding surface 222 is provided with an arc transition surface 226; the connection between the stop surface 221 and the outer peripheral wall of the protection part 21 is provided with an arc transition surface 226; A circular arc transition surface 226 is provided at the connection. The provision of the arc transition surface 226 can reduce the connection between the outer arc surface 225 and the sliding surface 222, the connection between the stop surface 221 and the outer peripheral wall of the protection part 21 and the sliding during the process of tightening the anti-removal connector 100 and the joint 210 or the nut. The stress concentration at the connection between the surface 222 and the outer peripheral wall of the protection part 21 avoids damage to the tamper-proof part 22 or rupture between the tamper-proof part 22 and the protection part 21 , and improves the use safety and structural strength of the tamper-proof connector 100 .

Please refer to Figure 1, Figure 6, Figure 7 and Figure 9. The edge of the blocking surface 221 that is relatively far away from the inner wall of the protection portion 21 forms a stress edge 223 .

Optionally, the force-receiving edge 223 is arranged parallel to the axis of the protection portion 21 .

Optionally, the length of the force-receiving edge line 223 is L, 5mm<L<20mm.

In this way, when the user manipulates the external tool to apply a tightening torque to the tamper-resistant connector 100 , the external tool fully contacts the force-bearing edge 223 , so that the pressure of the external tool on the force-bearing edge 223 is equal to the force of the tamper-resistant connector 100 . The distance between the axes is maximized, and a large torque can be generated to the greatest extent, so it can save labor when tightening the anti-removal connector 100 and the joint 210 or the nut. When an adjustable wrench is used as an external tool that cooperates with the tamper-proof connector 100 , the force-receiving edges 223 can all abut against the adjustable wrench.

Please refer to Figure 2, Figure 3 and Figure 5. In the first embodiment of the tamper-resistant connector 100 provided in the present application, the first through hole 30 further includes a limiting section 32 disposed between the first hole 34 and the second hole 35 , and the inner diameter of the limiting section 32 is The change along the axial direction of the anti-removal connector 100 can abut against the outer peripheral wall of the pipe body and limit the depth that the protection portion 21 is sleeved on the pipe body.

Optionally, the inner diameter of the first hole 34 is larger than the inner diameter of the second hole 35 , and the inner diameter of the limiting section 32 decreases in the direction close to the protection portion 21 , that is, in the direction close to the first hole 34 , and can be abutted against the inner diameter of the stopper section 32 . The outer peripheral wall of the flaring part of the pipe body of the mouth part realizes the function of limiting the depth of the protection part 21 sleeved on the pipe body.

Optionally, the anti-removal connector 100 is further provided with a second chamfer 33 , and the second chamfer 33 is located on the side of the limiting section 32 relatively close to the protection portion 21 , that is, relatively close to the second hole 35 . The second chamfer 33 has the effect of giving way to the pipe body between the second hole 35 and the limiting section 32, which can avoid the connection between the inner wall surface of the second hole 35 and the inner wall surface of the limiting section 32 from causing a large impact on the pipe body. Squeeze action, reducing the risk of tube body being crushed and ruptured.

Please refer to Figure 1, Figure 8 to Figure 9. The anti-dismantling portion 22 has a reinforcing portion, and the reinforcing portion forms a reinforcing end face at one end relatively far away from the connecting section, and the reinforcing end face is parallel to the end face of the connecting section or the protection portion; The processing plane between the dismantling parts and facing the end of the protection part, the processing plane and the reinforcing end face are spaced apart in the axial direction of the first through hole, and the two are parallel to each other.

Optional, please refer to Figure 1 to Figure 2, Figure 4 to Figure 5. The outer diameter of the connecting section 10 and the anti-dismantling section 20 are the same, and the outer peripheral surface of the connecting section 10 and the outer peripheral surface of the anti-dismantling section 20 are arranged on a common cylindrical surface, and both are located on a common cylindrical surface coaxially arranged with the anti-dismantling connector 100 superior. In this way, the tamper-resistant connector 100 is easier to process and form, and the material can be removed from the axial length of a section of cylindrical blank near one end, and the remaining part after material removal can directly form the tamper-proof section 20 .

In the tamper-resistant connector 100 provided by the present application, the protection part 21 is sleeved with the pipe body to avoid the interference between the pipe body and the tamper-proof bump. The extrusion between the outer walls of the tubes reduces the risk of the tube body being scratched or crushed by the anti-disassembly bump, thereby reducing the hidden danger of refrigerant leakage caused by the tube body rupture, so the anti-disassembly connector 100 has better protection effect of the tube.

Please refer to Figures 4 to 5, and Figures 14 to 16. The present application also provides a tamper-resistant connection assembly 200, which includes a joint 210 or a nut, a second nozzle 230 and the aforementioned tamper-proof connector 100. The connection section 10 is threadedly connected to the joint 210 or the nut so that the first through hole 30 is connected to the joint. 210 is communicated with the hollow channel or the nut hole;

Whether the tamper-evident connector 100 is connected to the joint 210 or the nut depends on the type of threads on the connecting segment 10 . When the connection section 10 is provided with external threads, the anti-removal connector 100 is connected with the nut; when the connection section 10 is provided with internal threads, the anti-removal connector 100 is threadedly connected with the joint 210 .

The two ends of the anti-disassembly connecting assembly 200 provided in the present application can be connected to the pipeline in the refrigerant circulation circuit, or can be directly connected to the joint of the valve body. When the anti-disassembling connecting assembly 200 is directly connected to the pipeline, the joint 210 Or the end of the nut relatively far away from the tamper-proof connector 100 can be connected to the first nozzle 220, so that the hole of the first nozzle 220 and the hollow channel or nut hole of the joint 210 are communicated, and finally the refrigerant can pass through the first nozzle 220 and the joint 210. Or the nut, the anti-removal connector 100 and the second connecting pipe 230 are circulated. For the convenience of description, the specific structure and assembly method of the anti-disassembly connecting member 200 will be described in detail below by taking the screw connection of the anti-disassembly connecting member 100 and the joint 210 as an example.

Specifically, the joint 210 includes a clamping portion and a first threaded segment (not numbered), and a second through hole extending in the axial direction is opened. , the first thread segment can be an external thread or an internal thread, which can be fixed with the connecting segment 10 thread. When thread fixing is required, the user uses a nut wrench to clamp the clamping part, and use an external tool to fix the tamper-resistant connector. 100 applies a tightening torque to tighten the joint 210 and the tamper-proof connector 100; the joint 210 is sleeved with the first nozzle 220 through the second through hole.

Optionally, please refer to FIG. 5 , the first threaded section is an external thread, which extends into the connecting section 10 and is fixedly matched with the anti-disassembly connecting piece 100 ; the inner wall of the second through hole of the joint 210 is provided with a thread, which can be connected with the first connecting piece 10 . The threads on the outer peripheral wall of 220 are matched, so as to realize the fixed connection between the first nozzle 220 and the joint 210 .

Please continue to refer to Figure 5. One end of the second nozzle 230 is further provided with a second flared portion 2301 whose outer peripheral wall is in the shape of a conical surface. It abuts on the inner wall surface of the limiting section 32, so the limiting section 32 can limit the depth of the second pipe 230 sleeved on the protection part 21 by abutting and cooperating with the second flared part 2301, preventing the second pipe 230 from approaching The first through hole 30 is free to move in the direction in which the end portion of the protection portion 21 is opened.

On the basis of limiting the position of the protection portion 21 and the second connecting pipe 230, in order to realize the fixed connection between the second connecting pipe 230 and the anti-removal connecting member 100, the second flaring portion 2301 is further provided with a conical inner peripheral wall, and The end of the joint 210 extending into the anti-removal connector 100 is also provided with a conical abutting surface, and the abutting surface is in contact with the inner peripheral wall of the second flared portion 2301 , so the joint 210 connects the second The flared portion 2301 is pressed against the inner wall surface of the limiting section 32 , and the second nozzle 230 is clamped and fixed by the joint 210 and the anti-removal connector 100 .

In addition, the second chamfer 33 can give way to the area between the second flared part 2301 and the straight pipe body on the second nozzle 230 except for the second flared part 2301, so as to avoid the second flared part 2301 and the second flared part 2301 and the second flared part 2301. The junction of the straight pipe body of the nozzle 230 is subjected to the pressing force of the limiting section 32, resulting in the pressure injury and rupture.

Optionally, the outer peripheral wall of the second nozzle 230 is arranged to fit with the inner peripheral wall of the first through hole 30. Not only the straight pipe section of the second nozzle 230 is attached to the inner wall of the second hole 35, but also the outer peripheral wall of the second flared portion 2301 is in contact with the inner wall of the second hole 35. The inner wall of the limiting section 32 is in contact with each other. With this arrangement, the second nozzle 230 can be better sleeved on the protection portion 21 to prevent the second nozzle 230 from shaking in the protection portion 21 . The protection effect of the protection part 21 on the second socket 230 .

See Figure 16. One end of the first connecting pipe 220 is further provided with a first flared portion 2201 whose outer peripheral wall is conical. When the first flared portion 2201 abuts against the limiting surface, the limiting surface can stop the first nozzle 220 from continuing to move in the axial direction, thereby preventing the A nozzle 220 is separated from the connector 210.

Optionally, the end portion of the connecting segment 10 is further provided with a conical chamfered surface, and the inner wall surface of the first flared portion 2201 is in the shape of a conical surface and is adapted to the conical chamfered surface. The anti-removal connector 100 presses against the inner wall surface of the first flared portion 2201 through the conical chamfered surface, and presses the outer peripheral wall of the first flared portion 2201 against the limiting surface in the joint 210, thereby realizing the anti-removal connector. 100 and the joint 210 jointly clamp the first nozzle 220 in both directions, and the first nozzle 220, the joint 210 and the anti-disassembly connector 100 are fixed as a whole.

The technical features of the above-described embodiments can be combined arbitrarily. In order to simplify the description, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be regarded as the scope described in this specification.

Those of ordinary skill in the art should realize that the above embodiments are only used to illustrate the present application, rather than being used to limit the present application, as long as the above embodiments are appropriately changed within the scope of the essential spirit of the present application and variations all fall within the scope of protection claimed in this application.

Claims

An anti-disassembly connecting piece is characterized in that it includes a connecting section and a dismantling section that are connected to each other, the connecting section is used for connecting a joint or a nut, and the anti-disassembling section includes a protection part and an anti-disassembling part that are connected to each other, and the There is a first through hole in the anti-disassembly connecting piece, the protection part can be sleeved with the pipe body through the first through hole, the anti-disassembly part is protruded on the end part or the outer peripheral wall of the protection part, and the The anti-removal part has a stop surface and a sliding surface arranged opposite to each other along the circumferential direction of the protection part.
The tamper-proof connector according to claim 1, wherein the number of the tamper-proof parts is plural, and the plurality of tamper-proof parts are arranged at intervals along the circumference of the protection part, and two adjacent tamper-proof parts are arranged at intervals along the circumference of the protection part. A clamping section is formed between the anti-removal parts.
The tamper-proof connector according to claim 2, wherein the number of the tamper-proof parts is two, and the two tamper-proof parts are symmetrically arranged around the axis of the protection part.
The anti-removal connector according to claim 2, wherein the anti-removal part has a reinforcement part, and the reinforcement part forms a reinforcement end face at one end away from the connection section, and the reinforcement end face is parallel to the connection section or The end face of the protection part; the anti-disassembly connecting piece is also provided with a processing plane located between two adjacent anti-dismantling parts, and the processing plane and the reinforcing end face are at the position of the first through hole. The axes are spaced upward and parallel to each other.
The tamper-proof connector according to claim 1 or 2, wherein an edge of the stop surface away from the inner wall of the protection portion forms a force-bearing edge;

The length of the force-receiving edge line is L, 5 mm<L<20 mm; and/or, the force-receiving edge line is arranged parallel to the axis of the protection portion.
The tamper-proof connector according to claim 1 or 2, wherein the included angle between the sliding surface and the radial section of the protection portion is α, 20°≤α≤50°.
The anti-removal connector according to claim 1 or 2, wherein the stop surface is a plane, and the stop surface is arranged in parallel with the axis of the protection portion; and/or the sliding surface is a curved surface.
The anti-removal connector according to claim 7, wherein the sliding surface is a curved surface, and the sliding surface is recessed toward the inside of the anti-removal portion.
The tamper-proof connector according to claim 1 or 2, wherein the tamper-proof part further comprises an outer arc surface, and the outer arc surface is located on the same stop surface of the tamper-proof part and the same tamper-proof part Between the sliding surfaces, the connection between the outer arc surface and the sliding surface is provided with a circular arc transition surface; and/or,

A circular arc transition surface is provided at the connection between the stop surface and the outer peripheral wall of the protection portion; and/or a circular arc transition surface is provided at the connection between the sliding surface and the outer peripheral wall of the protection portion.
The tamper-proof connector according to claim 1 or 2, wherein the tamper-proof part is protruded from the outer peripheral wall of the protection part, the protection part is a pipe body, and the tamper-proof part is protruded from the outer peripheral wall of the protection part. The height of the outer peripheral wall of the protection portion is greater than the thickness of the tube wall of the protection portion.
The anti-removal connector according to claim 1 or 2, wherein the protection part is provided with a first chamfer, and the first chamfer is located on the inner wall surface of the first through hole and the end surface of the protection part between.
The tamper-proof connector according to claim 1 or 2, wherein the tamper-proof part is flush with the end surface of the protection part, and the protection part is closer to the axis of the tamper-proof section than the tamper-proof part Location.
The tamper-resistant connector according to claim 1 or 2, wherein the connecting section and the tamper-proof section are integrally formed.
The tamper-proof connecting piece according to claim 1 or 2, wherein the first through hole further comprises a limiting section, the inner diameter of the limiting section varies along the axis direction of the tamper-proof connecting piece, and can abut the pipe the outer peripheral wall of the body and limit the depth in which the protection part is sheathed on the pipe body.
The tamper-proof connector according to claim 14, wherein the inner diameter of the limiting section decreases in a direction close to the protection portion, a second chamfer is further provided in the tamper-proof connector, and the first The two chamfers are located on a side of the limiting section relatively close to the protection portion.
The anti-removal connector according to claim 1 or 2, wherein the connecting section is provided with a thread, and is fixedly matched with the joint through the thread;

The thread is provided on the inner wall of the first through hole; or, the thread is provided on the outer peripheral wall of the connecting section, and the thread is used for cooperating connection with the nut.
The tamper-resistant connector according to claim 1 or 2, wherein the outer diameter of the connecting section and the tamper-proof section are the same.
A tamper-proof connection assembly, characterized in that it comprises a joint or a nut, a second pipe, and the tamper-proof connector according to any one of claims 1 to 17, wherein the connection section is connected to the joint or the nut. The second pipe is sleeved on the protection part through the first through hole.
The tamper-proof connection assembly according to claim 18, wherein the outer peripheral wall of the second nozzle is arranged in a fit with the inner peripheral wall of the first through hole.
The tamper-proof connection assembly according to claim 18, wherein the first through hole further comprises a limiting segment, and the inner diameter of the limiting segment decreases in a direction approaching the protection portion; One end is provided with a second flared portion, and the outer peripheral wall of the second flared portion abuts against the inner peripheral wall of the limiting section.