Upsetting connection structure of air conditioner pipe and pressing plate

Abstract

The utility model relates to the technical field of automobile air conditioner pipes, in particular to an upsetting connection structure of an air conditioner pipe and a pressing plate. Comprising a pipeline body and a pressing plate arranged on the outer side of the pipeline body in a sleeving mode, a protrusion located at the top of the pressing plate and a turned-over edge located at the bottom of the pressing plate are arranged on the outer circumferential face of the pipeline body, a pipe penetrating hole allowing the pipeline body to penetrate through is formed in the pressing plate, and a plurality of rectangular grooves are evenly formed in the inner circumferential face of the pipe penetrating hole at intervals; the pressing plate is arranged on the outer side of the pipeline body in a press-fitting and sleeving mode and clings to the outer circumferential face of the pipeline body through the rectangular grooves in the pipe penetrating holes. In order to solve the problems in the prior art, the utility model provides the connecting structure of the air conditioner pipe and the pressing plate, which is good in connecting reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive air-conditioning pipes, in particular to a upsetting structure between an air-conditioning pipe and a pressing plate. Background Art

[0002] An automotive air-conditioning pipe is an air-conditioning pipe connecting parts such as an automotive air-conditioning compressor, an evaporator, and a condenser. The end of the automotive air-conditioning pipe is connected to the air-conditioning compressor, the evaporator, and the condenser. The sealing at the connection plays a decisive role in whether it is reliable and can meet the standards of the vehicle manufacturer, and the end structure is crucial.

[0003] Currently, for the connection structure between an air-conditioning pipe and a pressing plate on the market, the pressing plate is complex to process. When installing the pressing plate and the air-conditioning pipe, it is necessary to distinguish the installation direction of the pressing plate. After connection, the pressing plate is prone to loosening, making it impossible for the vehicle manufacturer to install. In more serious cases, the pressing plate is installed in the wrong direction, resulting in damage to the end of the air-conditioning pipe, and even damage to the processing molds and equipment. Summary of the Utility Model

[0004] The utility model provides a connection structure between an air-conditioning pipe and a pressing plate with good connection reliability to solve the problems existing in the prior art.

[0005] The technical solution adopted by the utility model is as follows: a upsetting structure between an air-conditioning pipe and a pressing plate, including a pipe body and a pressing plate sleeved outside the pipe body. A protrusion located at the top of the pressing plate and a flanging located at the bottom of the pressing plate are provided on the outer circumferential surface of the pipe body. A pipe-passing hole for the pipe body to pass through is provided on the pressing plate, and a plurality of rectangular grooves are evenly spaced on the inner circumferential surface of the pipe-passing hole. The pressing plate is sleeved outside the pipe body by pressing and clamps the outer circumferential surface of the pipe body through the rectangular grooves on the pipe-passing hole.

[0006] As a further improvement of the utility model, chamfers are provided at both the top and bottom of the pipe-passing hole inside the pressing plate, and the two chamfers are respectively located at the intersection of the pipe-passing hole and the upper and lower planes of the pressing plate.

[0007] As a further improvement of the utility model, the width of the rectangular groove is 0.2 mm and the depth is 0.2 mm.

[0008] As a further improvement of the utility model, an annular groove is provided on the outer circumferential surface of the pipe body above the protrusion.

[0009] As a further improvement of the utility model, the cross-section of the annular groove is in a "U" shape and the notch of the annular groove is provided with an arc-shaped fillet.

[0010] As a further improvement of the utility model, the cross-section of the flanging is triangular and the flanging is upset and formed from the inner wall surface of the pipe body to the outer wall surface of the pipe body.

[0011] Advantages of the present utility model: The connection structure between the air-conditioning pipe and the pressing plate provided by the present utility model has protrusions and flanges arranged on the outer circumferential surface of the pipeline body. Through the design of the pipe-passing holes and rectangular grooves on the pressing plate, a firm connection between the pressing plate and the pipeline body is achieved, greatly improving the reliability of the connection; the chamfer design on the pressing plate makes the installation process smoother, reduces the resistance during installation, and further improves the installation efficiency; the width and depth of the rectangular groove are precisely designed to ensure an appropriate biting force between the pressing plate and the pipeline body, avoiding connection failure problems caused by over-tight or over-loose biting; it can meet the requirement of the leakage rate ≤ 2 grams / year as specified in the standard, and is economical, practical, safe and reliable. Description of the Drawings

[0012] Figure 1 Fig. is the overall structural schematic diagram of the upsetting connection structure between an air-conditioning pipe and a pressing plate of the present utility model;

[0013] Figure 2 Fig. is the exploded state diagram of the pipeline body and the pressing plate of the upsetting connection structure between an air-conditioning pipe and a pressing plate of the present utility model;

[0014] Figure 3 Fig. is the Figure 2 partial sectional view of the state of the upsetting connection structure between an air-conditioning pipe and a pressing plate of the present utility model;

[0015] Figure 4 Fig. is the top view of the pressing plate of the upsetting connection structure between an air-conditioning pipe and a pressing plate of the present utility model.

[0016] As shown in the figure: 1. Pipeline body; 2. Pressing plate; 3. Protrusion; 4. Annular groove; 5. Flange; 6. Pipe-passing hole; 7. Rectangular groove; 8. Chamfer. Detailed Embodiments

[0017] The orientation terms such as upper, lower, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned in this specification are defined relative to its structure, and they are relative concepts. Therefore, it is possible to change accordingly according to their different positions and different usage states; so, these or other orientation terms should not be construed as restrictive terms.

[0018] The singular forms of "a", "the" and "said" used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] The utility model provides a upset joint structure of an air-conditioning pipe and a pressing plate as shown in the attached Figures 1-4 figure, which includes a pipeline body 1 and a pressing plate 2 sleeved outside the pipeline body 1. A protrusion 3 located at the top of the pressing plate 2 and a flanging 5 located at the bottom of the pressing plate 2 are provided on the outer circumferential surface of the pipeline body 1, which can prevent the pressing plate 2 from moving back and forth, so that the axial pull-off force between the pressing plate 2 and the pipeline body 1 is > 120 N, thereby making the connection between the pressing plate 1 and the pipeline body 2 reliable. The pressing plate 2 is provided with a pipe-passing hole 6 for the pipeline body 1 to pass through, and a plurality of rectangular grooves 7 are evenly spaced on the inner circumferential surface of the pipe-passing hole 6. The pressing plate 2 is sleeved outside the pipeline body 1 by pressing and bites the outer circumferential surface of the pipeline body 1 through the rectangular grooves 7 on the pipe-passing hole 6, increasing the anti-rotation strength between the pressing plate 2 and the pipeline body 1, so that the torque between the pressing plate 2 and the pipeline body 1 is ≥ 20 N·m, which can prevent the pressing plate from rotating, thereby making the connection between the pressing plate 2 and the pipeline body 1 reliable.

[0021] As Figure 3 and Figure 4 shown, in the utility model, chamfers 8 are provided at the top and bottom of the pipe-passing hole 6 inside the pressing plate 2, and the two chamfers 8 are respectively located at the intersection of the pipe-passing hole 6 and the upper and lower planes of the pressing plate 2. When the pressing plate 2 is installed on the pipeline body 1, the chamfers 8 can guide the pipeline body 1 to pass through the pipe-passing hole 6 smoothly, reduce the frictional resistance during the installation process, thereby improving the installation efficiency. At the same time, the chamfers 8 can also prevent the pressing plate 2 from scratching the pipeline body 1 during the pressing process, ensuring the integrity of the pipeline body 1 and extending the service life of the air-conditioning pipe.

[0022] As Figure 3 and Figure 4 shown, in the utility model, the width of the rectangular groove 7 is 0.2 mm and the depth is 0.2 mm, which ensures the firm bite between the pressing plate 2 and the pipeline body 1 and avoids the surface damage of the pipeline body 1 caused by over-tight biting.

[0023] As Figure 3 shown, in the utility model, an annular groove 4 is provided on the outer circumferential surface of the pipeline body 1 above the protrusion 3.

[0024] As Figure 3 shown, in the utility model, the cross-section of the annular groove 4 is in a "U" shape and the notch of the annular groove 4 is provided with an arc-shaped fillet. After assembling a sealing ring in the annular groove 4, it can well protect the "O" - shaped sealing ring and achieve a good sealing effect.

[0025] As Figure 3 shown, in the present utility model, the cross-section of the flanging 5 is triangular and the flanging 5 is formed by upsetting from the inner wall surface of the pipeline body 1 to the outer wall surface of the pipeline body 1, ensuring a firm connection between the pressing plate and the pipeline body and not easily falling off.

[0026] Working principle: When the present utility model is specifically implemented, the pressing plate 2 is sleeved outside the pipeline body 1 through the pipe-passing hole 6. Since a plurality of rectangular grooves 7 are uniformly spaced on the inner circumferential surface of the pipe-passing hole 6, the pressing plate 2 will bite the outer circumferential surface of the pipeline body 1 through the rectangular grooves 7 during the pressing process, realizing a firm connection between the pressing plate 2 and the pipeline body 1. At the same time, the protrusions 3 and the flanging 5 provided on the outer circumferential surface of the pipeline body 1 can prevent the pressing plate 2 from moving forward and backward and rotating, further enhancing the reliability of the connection.

[0027] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An upset connection structure of an air conditioning pipe and a pressing plate, comprising a pipe body (1) and a pressing plate (2) sleeved on the outside of the pipe body (1), characterized in that: The outer circumferential surface of the pipeline body (1) is provided with a protrusion (3) located at the top of the pressure plate (2) and a flange (5) located at the bottom of the pressure plate (2); the pressure plate (2) is provided with a pipe-through hole (6) for the pipeline body (1) to pass through, and a plurality of rectangular grooves (7) are evenly spaced on the inner circumferential surface of the pipe-through hole (6); the pressure plate (2) is mounted on the outside of the pipeline body (1) by press-fitting, and bites the outer circumferential surface of the pipeline body (1) through the rectangular grooves (7) on the pipe-through hole (6).

2. The upsetting structure of an air conditioning pipe and a pressing plate according to claim 1, characterized in that: Chamfers (8) are provided at the top and bottom of the tube-penetrating hole (6) in the pressing plate (2), and the two chamfers (8) are respectively located at the intersection of the tube-penetrating hole (6) and the upper and lower planes of the pressing plate (2).

3. The upsetting structure of an air conditioning pipe and a pressing plate according to claim 1, characterized in that: The rectangular groove (7) has a width of 0.2 mm and a depth of 0.2 mm.

4. The upsetting structure of an air conditioning pipe and a pressing plate according to claim 1, characterized in that: An annular groove (4) located above the protrusion (3) is provided on the outer circumferential surface of the pipeline body (1).

5. The upsetting structure of an air conditioning pipe and a pressing plate according to claim 4, characterized in that: The cross section of the annular groove (4) is U-shaped and the notch of the annular groove (4) is provided with an arc-shaped rounded corner.

6. The upsetting structure of an air conditioning pipe and a pressing plate according to claim 1, characterized in that: The cross section of the flange (5) is triangular and the flange (5) is formed by upsetting the inner wall of the pipeline body (1) towards the outer wall of the pipeline body (1).

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