Connecting piece for air conditioner hose and metal hard pipe

Abstract

The utility model relates to the technical field of connecting pieces, and discloses a connecting piece for an air conditioner hose and a metal hard pipe, which comprises a hose and a hard pipe, the outside of the hose is fixedly connected with a first sealing rubber ring, the outside of the hard pipe is fixedly connected with a second sealing rubber ring, and the first sealing rubber ring is in contact with the second sealing rubber ring. A first sealing rubber ring and a second sealing rubber ring are arranged on the outer side of the hose, a sealing assembly is arranged outside the first sealing rubber ring and the second sealing rubber ring, a sleeve is arranged outside the sealing assembly, and a connecting assembly is arranged inside the sleeve. The connection sealing performance between the soft pipe and the hard pipe is higher, the problems of leakage and leakage of the R air conditioner pipe are avoided to a certain degree, and therefore the using effect and the service life of the R air conditioner pipe are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a connector for an air-conditioning hose and a metal hard pipe. Background Art

[0002] With the development of economy and the progress of society, the country has higher and higher requirements for environmental protection. New energy electric vehicles have become a trend. As users, the requirements for user comfort are getting higher and higher with the development of the times. As a car's thermal management system, it has the greatest impact on battery life, cruising range, and comfort of electric vehicles. The heat pump air-conditioning system using carbon dioxide as a refrigerant has a high-pressure working pressure of about 17MPa, a limit pressure of 30MPa, an operating temperature of about -40℃~180℃, a low-pressure pipe working pressure of about 13MPa, and an operating temperature of about 10℃~100℃. The conventional refrigerant R134a has a high pressure of 2MPa, a low pressure of no more than 0.3MPa, and an operating temperature of no more than 100℃. Therefore, the pipeline using carbon dioxide refrigerant has much higher requirements for high temperature, high pressure and permeation resistance than the pipeline using R134a or R1234yf. Therefore, in order to use carbon dioxide refrigerant as the refrigerant and make it suitable for high and low pressure, high and low temperature automotive air-conditioning pipes, we are required to ensure the sealing performance and permeation resistance of the pipeline connection under high temperature and high pressure. Therefore, a connector for air-conditioning hoses and metal hard pipes is needed.

[0003] At present, there are patents for the design of carbon dioxide air conditioning pipes both at home and abroad. Domestic air conditioning pipe manufacturing companies have applied for more patents. The basic ideas of these patents are: barrier layer stainless steel bellows, carbon dioxide (R744) air conditioning hose, conversion connection assembly, air conditioning hard pipe. The R744 air conditioning hose is composed of rubber layer, reinforcement layer (braided layer), rubber layer from inside to outside; the conversion joint assembly includes: stainless steel connection joint, conversion connection pipe (aluminum), sleeve. For the R744 air conditioning pipe whose barrier layer is a stainless steel bellows, the air conditioning pipe is first welded with the stainless steel connection joint and the stainless steel bellows, and then the conversion joint is connected to the former, and then the R744 air conditioning hose is put on their outside, and then the hose, the stainless steel connection joint and the conversion joint (aluminum material) are buckled together through a sleeve, and a non-metallic sealing ring or other soft sealing layer is added to the stainless steel connection joint to increase the anti-penetration and enhance the sealing performance. A plurality of parallel protrusions are added to the stainless steel connection joint and the conversion joint to increase the friction resistance after buckling, and the conversion joint (aluminum material) is welded (brazed) to the air conditioning hard pipe (aluminum pipe) before buckling. The patent adopts the buckling method for sealing. Under high temperature and high pressure, this method of sealing by buckling and pressing purely relying on non-metallic sealing rings is difficult to ensure that the non-metal layer has no aging phenomenon under long-term high temperature and high pressure, and ultimately it is still impossible to guarantee that the R744 air conditioning pipe has no leakage and seepage problems for a long time. Utility Model Content

[0004] The purpose of the utility model is to provide a connector for an air conditioning hose and a metal hard pipe in order to solve the above problems. The device utilizes a sealing component and a connecting component to achieve a leak-free and seepage-free effect, thereby solving the problems mentioned in the background technology.

[0005] In order to solve the above problems, the utility model provides a technical solution:

[0006] A connector for an air conditioning hose and a metal rigid tube, comprising a hose and a rigid tube, wherein a first sealing rubber ring is fixedly connected to the outside of the hose, and a second sealing rubber ring is fixedly connected to the outside of the rigid tube, and the first sealing rubber ring and the second sealing rubber ring are in contact with each other, and sealing assemblies are provided on the outside of the first sealing rubber ring and the second sealing rubber ring, and a sleeve is provided on the outside of the sealing assembly, and a connecting assembly is provided on the inside of the sleeve.

[0007] As a preferred solution of the utility model, the sealing assembly includes an upper arc block and a lower arc block, and two T-shaped grooves are arranged inside the upper arc block.

[0008] As a preferred solution of the utility model, two T-shaped rubber strips are fixedly connected to the outside of the lower arc block, and the two T-shaped rubber strips are respectively clamped with corresponding T-shaped grooves.

[0009] As a preferred solution of the utility model, the connection assembly includes a silicone strip, two of the silicone strips are fixedly connected to the inner side of the sleeve, and a plurality of positioning grooves are provided inside the two silicone strips.

[0010] As a preferred solution of the utility model, movable grooves are provided inside the upper arc block and the lower arc block, springs are provided inside the two movable grooves, and one end of the two springs is fixedly connected to a first positioning rod.

[0011] As a preferred solution of the utility model, a second positioning rod is fixedly connected to the inside of the two movable grooves and on one side away from the first positioning rod, and the two first positioning rods and the second positioning rods extend into the corresponding positioning grooves respectively.

[0012] The beneficial effect of the utility model is that when the hose and the hard pipe are connected, the connection sealing between the hose and the hard pipe is made stronger through the cooperation of the first sealing rubber ring, the second sealing rubber ring and the sealing assembly as well as the sleeve and the connecting assembly, thereby avoiding leakage and seepage problems of the R air-conditioning pipe to a certain extent, thereby ensuring the use effect and service life of the R air-conditioning pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] For ease of explanation, the present invention is described in detail by the following specific implementations and drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the overall disassembly of the utility model;

[0016] Figure 3 This is a schematic diagram of the interior side of the sealing component of the utility model;

[0017] Figure 4 It is a schematic diagram of the interior of the connection assembly of the utility model.

[0018] In the figure: 1. hose; 2. hard tube; 3. first sealing rubber ring; 4. second sealing rubber ring; 5. sealing assembly; 51. upper arc block; 52. lower arc block; 53. T-slot; 54. T-shaped rubber strip; 6. sleeve; 7. connecting assembly; 71. silicone strip; 72. positioning groove; 73. movable groove; 74. spring; 75. first positioning rod; 76. second positioning rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Example:

[0021] See also Figure 1 - Figure 4 The utility model provides a technical solution: a connector for an air conditioning hose and a metal hard pipe, comprising a hose 1 and a hard pipe 2, a first sealing rubber ring 3 is fixedly connected to the outside of the hose 1, a second sealing rubber ring 4 is fixedly connected to the outside of the hard pipe 2, and the first sealing rubber ring 3 and the second sealing rubber ring 4 are in contact, a sealing assembly 5 is arranged outside the first sealing rubber ring 3 and the second sealing rubber ring 4, a sleeve 6 is arranged outside the sealing assembly 5, a connecting assembly 7 is arranged inside the sleeve 6, the sealing assembly 5 comprises an upper arc block 51 and a lower arc block 52, two T-shaped grooves 53 are arranged inside the upper arc block 51, two T-shaped rubber strips 54 are fixedly connected to the outside of the lower arc block 52, and the two T-shaped rubber strips 54 are respectively It is clamped with the corresponding T-slot 53. When the hose 1 and the hard tube 2 are connected, the first sealing rubber ring 3 on the hose 1 and the second sealing rubber ring 4 on the hard tube 2 are in contact to seal the connection between the hose 1 and the hard tube 2. Subsequently, the upper arc block 51 is covered on the outside of the first sealing rubber ring 3 and the second sealing rubber ring 4. Then, the lower arc block 52 is connected to the upper arc block 51. When connecting, the T-shaped rubber strip 54 on the lower arc block 52 is inserted into the T-slot 53 in the upper arc block 51. Since the material of the T-shaped rubber strip 54 is silicone, it is easy to insert the T-shaped rubber strip 54 into the T-slot 53 during installation. At the same time, the T-shaped rubber strip 54 has certain sealing and anti-leakage properties.

[0022] Furthermore, the connecting component 7 includes a silicone strip 71, and the two silicone strips 71 are fixedly connected to the inner side of the sleeve 6. A plurality of positioning grooves 72 are provided inside the two silicone strips 71, and movable grooves 73 are provided inside the upper arc block 51 and the lower arc block 52. Springs 74 are provided inside the two movable grooves 73, and one end of the two springs 74 is fixedly connected to a first positioning rod 75. The inside of the two movable grooves 73 and the side away from the first positioning rod 75 are fixedly connected to a second positioning rod 76, and the two first positioning rods 75 and the second positioning rods 76 extend to the corresponding positioning grooves 72 respectively. After the upper arc block 51 and the T-slot 53 are fixed, the sleeve 6 is sleeved on the outside of the upper arc block 51 and the lower arc block 52. When the sleeve 6 is connected, first, when the sleeve 6 is located outside the upper arc block 51 and the lower arc block 52, the sleeve 6 is moved in the direction of the spring 74, and then the sleeve 6 is moved. During the movement, the silicone strip 71 on the inner side of the sleeve 6 is inserted into the movable groove 73. When the first positioning rod 75 is inserted into the positioning groove 72, the sleeve 6 will continue to move in the direction of the spring 74 to squeeze the spring 74. When the spring 74 is squeezed, the silicone strip 71 is completely located in the movable groove 73. At this time, the second positioning rod 76 will coincide with the positioning groove 72 on the side away from the spring 74. Subsequently, the second positioning rod 76 and the positioning groove 72 will be clamped by the spring 74 reset, thereby fixing the sleeve 6. Therefore, through the cooperation of the first sealing rubber ring 3, the second sealing rubber ring 4 and the sealing assembly 5, as well as the sleeve 6 and the connecting assembly 7, the connection sealing between the hose 1 and the hard pipe 2 is made stronger, which to a certain extent avoids the leakage and seepage of the R744 air-conditioning pipe, thereby ensuring the use effect and service life of the R744 air-conditioning pipe.

[0023] In summary: when the hose 1 and the hard tube 2 are connected, the first sealing rubber ring 3 on the hose 1 and the second sealing rubber ring 4 on the hard tube 2 are in contact to seal the connection between the hose 1 and the hard tube 2. Subsequently, the upper arc block 51 is covered on the outside of the first sealing rubber ring 3 and the second sealing rubber ring 4. Then, the lower arc block 52 is connected to the upper arc block 51. When connecting, the T-shaped rubber strip 54 on the lower arc block 52 is inserted into the T-shaped groove 53 in the upper arc block 51. Since the material of the T-shaped rubber strip 54 is silicone, it is convenient to insert the T-shaped rubber strip 54 into the T-shaped groove 53 during installation. At the same time, the T-shaped rubber strip 54 has certain sealing and anti-leakage performance. After the upper arc block 51 and the T-shaped groove 53 are fixed, the sleeve 6 is sleeved on the outside of the upper arc block 51 and the lower arc block 52. When the sleeve 6 is connected, first, when the sleeve 6 is located outside the upper arc block 51 and the lower arc block 52, the sleeve 6 is elastically tightened. When the first positioning rod 75 is inserted into the positioning groove 72, the sleeve 6 will continue to move in the direction of the spring 74 to squeeze the spring 74. When the spring 74 is squeezed, the silicone strip 71 is completely located in the movable groove 73. At this time, the second positioning rod 76 will coincide with the positioning groove 72 on the side away from the spring 74. Subsequently, the spring 74 is reset to make the second positioning rod 76 and the positioning groove 72 snap-fit, thereby fixing the sleeve 6. Therefore, through the cooperation of the first sealing rubber ring 3, the second sealing rubber ring 4 and the sealing assembly 5, as well as the sleeve 6 and the connecting assembly 7, the connection sealing between the hose 1 and the hard pipe 2 is made stronger, thereby avoiding leakage and seepage problems of the R744 air-conditioning pipe to a certain extent, thereby ensuring the use effect and service life of the R744 air-conditioning pipe.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connector for an air conditioning hose and a metal hard pipe, comprising a hose (1) and a hard pipe (2), characterized in that: The outside of the hose (1) is fixedly connected to a first sealing rubber ring (3), the outside of the hard tube (2) is fixedly connected to a second sealing rubber ring (4), and the first sealing rubber ring (3) and the second sealing rubber ring (4) are in contact with each other. A sealing assembly (5) is provided outside the first sealing rubber ring (3) and the second sealing rubber ring (4), a sleeve (6) is provided outside the sealing assembly (5), and a connecting assembly (7) is provided inside the sleeve (6).

2. A connector for an air conditioning hose and a metal hard pipe according to claim 1, characterized in that: The sealing assembly (5) comprises an upper arc block (51) and a lower arc block (52), and two T-shaped grooves (53) are arranged inside the upper arc block (51).

3. A connector for an air conditioning hose and a metal hard pipe according to claim 2, characterized in that: Two T-shaped rubber strips (54) are fixedly connected to the outside of the lower arc block (52), and the two T-shaped rubber strips (54) are respectively clamped with corresponding T-shaped grooves (53).

4. A connector for an air conditioning hose and a metal hard pipe according to claim 1, characterized in that: The connection assembly (7) comprises a silicone strip (71), and the two silicone strips (71) are fixedly connected to the inner side of the sleeve (6), and a plurality of positioning grooves (72) are provided inside the two silicone strips (71).

5. A connector for an air conditioning hose and a metal hard pipe according to claim 2, characterized in that: The upper arc block (51) and the lower arc block (52) are both provided with movable grooves (73), the two movable grooves (73) are both provided with springs (74), and one end of the two springs (74) is fixedly connected to a first positioning rod (75).

6. A connector for an air conditioning hose and a metal hard pipe according to claim 5, characterized in that: A second positioning rod (76) is fixedly connected to the inside of the two movable grooves (73) and on one side away from the first positioning rod (75), and the two first positioning rods (75) and the second positioning rod (76) respectively extend into the inside of the corresponding positioning grooves (72).

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