Pipe end connector of automobile air conditioner evaporator

Abstract

The utility model discloses an automobile air conditioner evaporator pipe end connector which comprises a connecting plate and a guide pipe, a through installation hole is formed in the connecting plate, the guide pipe is inserted and installed in the installation hole, a reserved clamping groove is formed in the inner wall of the installation hole in the circumferential direction, a bending part formed by pipe expansion is arranged outside the guide pipe, and the bending part is installed at the reserved clamping groove. An elastic temperature conducting piece is further installed between the bending part and the reserved clamping groove, a plurality of reserved fixing grooves are symmetrically formed in the inner wall of the installation hole in the circumferential direction, fixing protruding blocks formed by pipe expansion are arranged at the positions, corresponding to the reserved fixing grooves, of the guide pipe, and the fixing protruding blocks are installed in the reserved fixing grooves. The elastic temperature conducting piece is attached between the guide pipe and the reserved mounting groove, so that the contact faces of the guide pipe and the reserved mounting groove are in better full contact, the temperature conducting efficiency between the guide pipe and the connecting plate is improved, the elastic temperature conducting piece has the damping effect, loosening of the connecting position is effectively avoided, and the mounting stability between the guide pipe and the connecting plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air-conditioning evaporators, in particular to a pipe end joint of an automobile air-conditioning evaporator. Background Art

[0002] Automobile air conditioning uses media substances to regulate the air inside the car so that it can meet the needs of human comfort in terms of temperature, humidity, flow rate and cleanliness. It can prevent or remove fog, frost and ice and snow on the glass, ensure the health of passengers and driving safety, provide a comfortable riding environment for passengers, and create good working conditions for drivers. The evaporator is one of the important components in the automobile air conditioning system. It not only affects the cooling performance of the automobile air conditioning system, but also directly affects the actual cooling effect in the car.

[0003] For example, the patent application number is: 201320744627.9, which discloses a car air-conditioning evaporator tube end joint structure. By opening a tapered hole on a connecting plate connected to the aluminum tube, the aluminum tube is connected and fixed to the connecting plate by expanding the aluminum tube. However, there is a gap between the aluminum tube and the connecting plate, which affects the heat conduction effect between the aluminum tube and the evaporator. At the same time, the car air-conditioning will vibrate during operation and driving, which can easily cause deformation of the connection between the aluminum tube and the connecting plate and affect the fixing effect. The fixing stability is not high. Therefore, an automobile air-conditioning evaporator tube end joint is proposed to solve the above problems. Utility Model Content

[0004] In order to solve the problems in the above background technology, the utility model provides a pipe end joint for an automobile air-conditioning evaporator.

[0005] The utility model adopts the following technical solution: a car air-conditioning evaporator pipe end joint, comprising a connecting plate and a conduit, the connecting plate being provided with a penetrating mounting hole, the conduit being inserted and mounted in the mounting hole, the inner wall of the mounting hole being provided with a reserved slot along the circumferential direction, the outer surface of the conduit being provided with a bent portion formed by an expansion tube, the bent portion being mounted at the reserved slot, an elastic heat conducting member being further mounted between the bent portion and the reserved slot, the inner wall of the mounting hole being symmetrically provided with a plurality of reserved fixing grooves along the circumferential direction, the position of the conduit corresponding to the reserved fixing groove being provided with a fixing protrusion formed by an expansion tube, the fixing protrusion being mounted in the reserved fixing groove.

[0006] As a preferred embodiment of the present invention, the temperature conducting member is a temperature conducting silicone sheet.

[0007] As a preferred embodiment of the present invention, the thickness of the thermal conductive silicone sheet is 0.3mm-1mm.

[0008] As a preferred embodiment of the present invention, the shape of the inner wall of the reserved slot is arc-shaped, and the shape of the bent portion is consistent with the shape of the reserved slot.

[0009] As a preferred embodiment of the present invention, the diameter of the conduit is consistent with the inner diameter of the mounting hole on the connecting plate.

[0010] As a preferred embodiment of the present invention, the outer diameter of the bent portion on the catheter is smaller than the diameter of the inner wall of the reserved slot.

[0011] As a preferred embodiment of the present invention, the shape of the inner wall of the reserved fixing groove is arc-shaped, and the shape of the fixing protrusion is consistent with the shape of the reserved fixing groove.

[0012] As a preferred embodiment of the present invention, the number of the reserved fixing grooves is 8.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model deforms the conduit into a curved portion by expanding the tube, which limits the axial movement of the conduit, thereby firmly installing the conduit in the mounting hole of the connecting plate. The elastic thermal conductive member fits between the conduit and the reserved mounting groove, thereby filling the gap between the conduit and the reserved mounting groove, making their contact surfaces more fully contacted, thereby improving the heat conduction efficiency between the conduit and the connecting plate. Moreover, the thermal conductive member made of elastic material has a shock-absorbing effect, which effectively avoids the loosening of the connection caused by vibration generated during the operation of the air conditioner and the driving of the car, thereby improving the installation stability between the conduit and the connecting plate.

[0015] 2. The utility model is fastened and installed in the reserved slot by the fixing protrusion on the conduit, thereby further improving the stability of the fixation between the conduit and the connecting plate and playing a role in strengthening the fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model (the catheter is not expanded and installed);

[0017] Figure 2 This is a schematic diagram of the overall structure of the utility model (catheter expansion tube installation);

[0018] Figure 3 This is a schematic diagram of the catheter structure of the present utility model.

[0019] In the figure: 1, connecting plate; 11, reserved card slot; 111, thermal conductive silicone sheet; 12, reserved fixing slot; 2, conduit; 21, bending part; 22, fixing protrusion. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly used by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] See also Figure 1-3 The utility model provides a car air-conditioning evaporator pipe end joint, comprising a connecting plate 1 and a conduit 2, wherein the connecting plate 1 is provided with a through mounting hole, the conduit 2 is inserted and mounted in the mounting hole, the inner wall of the mounting hole is provided with a reserved card groove 11 along the circumferential direction, the conduit 2 is provided with a bending portion 21 formed by an expansion tube, the bending portion 21 is installed at the reserved card groove 11, and limits the axial movement of the conduit 2, thereby fastening the conduit 2 in the mounting hole of the connecting plate 1, and an elastic heat conducting member is further installed between the bending portion 21 and the reserved card groove 11, thereby filling the gap between the conduit 2 and the reserved mounting groove, so that The contact surface is in better and full contact, which improves the heat conduction efficiency between the conduit 2 and the connecting plate 1, and the heat conducting part made of elastic material has a shock-absorbing effect, which effectively avoids the loosening of the connection caused by the vibration generated during the operation of the air conditioner and the driving of the car, and improves the installation stability between the conduit 2 and the connecting plate 1. The inner wall of the mounting hole is symmetrically provided with a plurality of reserved fixing grooves 12 along the circumferential direction, and the position of the conduit 2 corresponding to the reserved fixing groove 12 is provided with a fixing protrusion 22 formed by an expansion tube. The fixing protrusion 22 is installed in the reserved fixing groove 12, which further improves the stability of the fixation between the conduit 2 and the connecting plate 1 and plays a role in strengthening the fixation.

[0024] Please pay attention to Figure 1-2The thermal conductive part is a thermal conductive silicone sheet 111. The silicone sheet material is relatively soft, has good compression performance, mature technology, is suitable for filling gaps, and has natural stickiness on both sides, which makes the installation between the conduit 2 and the connecting plate 1 more fixed. The thickness of the thermal conductive silicone sheet 111 is 0.3mm-1mm.

[0025] Please pay attention to Figure 1-3 The shape of the inner wall of the reserved slot 11 is arc-shaped, and the shape of the bending portion 21 is consistent with the shape of the reserved slot 11. The arc-shaped design makes the bending portion 21 of the catheter 2 easier to expand and effectively limits the axial movement of the catheter 2, making the processing operation simple.

[0026] Please pay attention to Figure 1-2 The diameter of the conduit 2 is consistent with the inner diameter of the mounting hole on the connecting plate 1, so that the conduit 2 and the connecting plate 1 are installed more tightly and stably, and the deformation and bending of the remaining parts of the conduit 2 are effectively avoided during the expansion process of the conduit 2, ensuring that the bending portion 21 of the conduit 2 is correctly expanded to form a shape that matches the reserved slot 11.

[0027] Please pay attention to Figure 1-2 The outer diameter of the bend 21 on the conduit 2 is smaller than the diameter of the inner wall of the reserved slot 11, and the outer diameter of the bend 21 = reserved slot 11 - (thickness of the thermal conductive silicone sheet 111 x 1.6); the gap between the conduit 2 and the reserved slot 11 is filled with the thermal conductive silicone sheet 111, and the width of the gap between the bend 21 on the conduit 2 and the reserved slot 11 is the thickness of the thermal conductive silicone sheet 111 x 0.8. A gap is reserved for placing the thermal conductive silicone sheet 111, thereby ensuring the thermal conductivity and shock absorption effect of the thermal conductive silicone sheet 111 to the highest extent, and avoiding damage to the thermal conductive silicone sheet 111 caused by excessive expansion of the tube or insufficient gap filling, which affects the thermal conductivity and shock absorption effects.

[0028] Please pay attention to Figure 1-2 The shape of the inner wall of the reserved fixing groove 12 is arc-shaped, the shape of the fixing protrusion 22 is consistent with the shape of the reserved fixing groove 12, the number of the reserved fixing grooves 12 is 8, the fixing protrusion 22 is interference-mounted with the reserved fixing groove 12, the arc-shaped reserved fixing groove 12 and the fixing protrusion 22 are easy to process and simple to operate, and the engagement of multiple fixing protrusions 22 with the reserved fixing groove 12 effectively ensures the stability of the fixation of the conduit 2 and the connecting plate 1.

[0029] The working principle of this utility model is as follows:

[0030] The installation hole on the connecting plate 1 is slotted to form an annular reserved card slot 11 and a plurality of reserved fixing slots 12, a temperature-conducting silica gel piece 111 is pasted in the reserved card slot 11 along the circumferential direction of the reserved card slot 11, the conduit 2 is inserted into the installation hole on the connecting plate 1, the conduit 2 pipe body at the reserved card slot 11 is deformed outward by using a pipe expanding tool to form a bending part 21, the bending part 21 and the inner wall of the reserved card slot 11 extrude the temperature-conducting silica gel piece 111, the temperature-conducting silica gel piece 111 is compressed to ensure that the conduit 2 is stably installed on the connecting plate 1, and the temperature-conducting and shock-absorbing performance of the temperature-conducting silica gel piece 111 is ensured, the conduit 2 pipe body at the reserved fixing slots 12 is deformed outward by using the pipe expanding tool to form fixing lugs 22, the fixing lugs 22 are tightly engaged in the reserved fixing slots 12, and the stability of the installation of the conduit 2 is further ensured, and the processing operation is simple and convenient.

[0031] The utility model has been described above in conjunction with the drawings, and obviously, the specific implementation of the utility model is not limited by the above mode, as long as the method concept and technical scheme of the utility model are adopted for such non-essential improvement or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, which are all within the protection scope of the utility model.

Claims

1. A pipe end joint for an automobile air-conditioning evaporator, characterized by: The invention comprises a connecting plate (1) and a conduit (2), wherein the connecting plate (1) is provided with a through mounting hole, the conduit (2) is inserted and mounted in the mounting hole, the inner wall of the mounting hole is provided with a reserved slot (11) along the circumferential direction, the outer surface of the conduit (2) is provided with a bending portion (21) formed by an expansion tube, the bending portion (21) is installed at the reserved slot (11), an elastic heat conducting member is also installed between the bending portion (21) and the reserved slot (11), the inner wall of the mounting hole is symmetrically provided with a plurality of reserved fixing slots (12) along the circumferential direction, a fixing protrusion (22) formed by an expansion tube is provided at a position on the conduit (2) corresponding to the reserved fixing slot (12), and the fixing protrusion (22) is installed in the reserved fixing slot (12).

2. The automobile air-conditioning evaporator pipe end joint according to claim 1, characterized in that: The thermal conductive component is a thermal conductive silicone sheet (111).

3. The automobile air-conditioning evaporator pipe end joint according to claim 2, characterized in that: The thickness of the thermal conductive silicone sheet (111) is 0.3 mm to 1 mm.

4. The automobile air-conditioning evaporator pipe end connector according to any one of claims 1 to 3, characterized in that: The inner wall of the reserved slot (11) is in an arc shape, and the shape of the bent portion (21) is consistent with the shape of the reserved slot (11).

5. The automobile air-conditioning evaporator pipe end joint according to claim 2, characterized in that: The diameter of the conduit (2) is consistent with the inner diameter of the mounting hole on the connecting plate (1).

6. The automobile air-conditioning evaporator pipe end joint according to claim 5, characterized in that: The outer diameter of the bent portion (21) on the catheter (2) is smaller than the diameter of the inner wall of the reserved slot (11).

7. The automobile air-conditioning evaporator pipe end joint according to claim 1, characterized in that: The inner wall of the reserved fixing groove (12) is in an arc shape, and the shape of the fixing protrusion (22) is consistent with the shape of the reserved fixing groove (12).

8. The automobile air-conditioning evaporator pipe end joint according to claim 7, characterized in that: The number of the reserved fixing grooves (12) is 8.

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