A compressor suction pipe assembly structure for a new energy vehicle

Abstract

The utility model discloses a compressor suction pipe assembly structure for new energy vehicle, including interface end, interface end is provided with two, one of which connects the compressor, another connects filter or evaporator, still include, the outside of rigid pipe is close to the annular clamping groove of processing at two end places, on the outside of rigid pipe, close to the position of annular clamping groove processing has the sealing end of taper, the soft pipe is provided with two, installs respectively in the both ends of rigid pipe, the one end of soft pipe is away from rigid pipe and butt joint interface end, the one end of soft pipe butt joint rigid pipe and injection moulded and formed has the sealing body, the sealing body and sealing end interference fit form seal, injection moulded and formed has the annular lug of cooperation annular clamping groove at the inner wall of sealing body, the connecting device connects soft pipe with frame, and this product has high sealability and anti -vibration.

Description

Technical Field

[0001] This utility model relates to a compressor intake pipe assembly structure for new energy vehicles. Background Technology

[0002] The thermal management system of new energy vehicles (such as pure electric or fuel cell vehicles) has extremely high requirements for the sealing, vibration resistance, and corrosion resistance of refrigerant piping. Traditional compressor suction pipes mostly use a fully flexible or fully rigid pipe structure, which has the following drawbacks: (1) Full hoses are prone to breakage due to vibration fatigue and have high flow resistance; (2) Fully rigid tubing is difficult to adapt to the relative displacement between the frame and the compressor, and is prone to leakage due to stress concentration; (3) Most of the existing sealing structures are single-stage seals, which are prone to failure under long-term vibration.

[0003] Therefore, there is an urgent need for a compressor intake pipe assembly structure for new energy vehicles that combines high sealing and vibration resistance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a compressor intake pipe assembly structure for new energy vehicles.

[0005] To solve the above problems, the present invention adopts the following technical solution: A compressor intake pipe assembly structure for a new energy vehicle includes two interface ends, one connected to the compressor and the other connected to a filter or evaporator. A rigid tube, wherein annular grooves are machined on the outside of the rigid tube near both ends, and a tapered sealing end is machined on the outside of the rigid tube near the annular grooves. Two flexible tubes are provided, each installed at one end of a rigid tube. The end of the flexible tube furthest from the rigid tube is connected to the interface end. A sealing body is injection molded onto the end of the flexible tube connected to the rigid tube. The sealing body and the sealing end are press-fitted to form a seal. An annular protrusion that matches the annular groove is injection molded onto the inner wall of the sealing body. A connecting device that connects the flexible tube to the vehicle frame.

[0006] Preferably, a stainless steel wire braided layer is provided on the outside of the flexible tube.

[0007] Preferably, the diameter of the stainless steel wire braided layer is 0.1mm to 0.15mm.

[0008] Preferably, the rigid tube is an aluminum alloy tube.

[0009] Preferably, the flexible tube is a fluororubber tube.

[0010] Preferably, openings are formed at both ends of the rigid tube, the diameter of which is larger than the inner diameter of the rigid tube, and a stepped surface is formed between the openings and the inner wall of the rigid tube; an inner insertion end is injection molded inside the sealing body, the inner insertion end is inserted into the opening, and the inner insertion end and the opening are press-fitted to form a seal, and the inner wall of the inner insertion end smoothly transitions to the inner wall of the rigid tube.

[0011] Preferably, a force-bearing portion is injection molded on the outer side of the sealing body, the force-bearing portion corresponding to the annular protrusion, and the connecting device is fixed at the force-bearing portion.

[0012] Preferably, a first annular groove is machined on the outer side of the force-bearing part, and the connecting device is positioned through the first annular groove.

[0013] Preferably, the connecting device includes an upper clamp, a lower clamp, and a connecting plate. The connecting plate is fixed to the upper clamp, and a locking bolt is fitted between the upper clamp and the lower clamp. After the locking bolt is tightened, the upper clamp and the lower clamp are clamped in the first annular groove and press the force-bearing part.

[0014] The beneficial effects of this utility model are: Triple sealing design First layer of seal: The inner insertion end of the flexible tube is press-fitted with the opening of the rigid tube to form the first layer of seal; Second seal: The annular convex ring of the sealing body is inserted into the annular groove of the rigid tube to achieve mechanical interlocking, which also forms a second seal; The third layer of sealing: The sealing body is interference-fitted with the sealing end of the rigid pipe to form a third layer of sealing. The synergistic effect of the triple seals significantly improves the sealing reliability under long-term vibration conditions.

[0015] Vibration suppression and fatigue resistance structures The thickened stress-bearing part is clamped by a connecting device, so that the annular convex ring and the annular groove fit tightly together, while absorbing the vibration energy transmitted by the frame.

[0016] The combination of rigid and flexible tubing can adapt to the cabin layout and avoid the drawbacks of single flexible or rigid tubing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a product diagram of this device; Figure 3 This is another product illustration of this device; Figure 4 This is an exploded view of the structure of this device; Figure 5 This is a sectional view at point A; Figure 6 This is a structural diagram of the connecting device. Detailed Implementation

[0019] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0020] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0021] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The illustrated compressor intake pipe assembly structure for a new energy vehicle includes an interface end 1, of which two are provided. One interface end 1 connects to the compressor, and the other connects to a filter or evaporator. It also includes... The rigid tube 2 has annular grooves 21 machined on its outer surface near both ends, and a tapered sealing end 22 machined on its outer surface near the annular grooves 21. Two flexible tubes 3 are provided, respectively installed at both ends of the rigid tube 2. The end of the flexible tube 3 away from the rigid tube 2 is connected to the interface end 1. The end of the flexible tube 3 connected to the rigid tube 2 is injection molded to form a sealing body 31. The sealing body 31 and the sealing end 22 are interference-fitted to form a seal. An annular convex ring 32 that matches the annular groove 21 is injection molded on the inner wall of the sealing body 31. Connecting device 4 connects the flexible tube 3 to the vehicle frame.

[0025] In the above technical solution, by clamping the connecting device 4 with the soft tube 3, the connection position of the soft tube 3 and the hard tube 2 is tightened to form a seal. Secondly, by using the thickened sealing body 31, the vibration transmitted from the frame to the intake pipe assembly structure is reduced.

[0026] The inner wall of the rigid tube is mirror polished (Ra≤0.8μm) to reduce flow resistance.

[0027] The inner wall of rigid pipes can be coated with a nano-coating (such as PTFE) to prevent condensation adsorption (for air conditioning systems).

[0028] See Figure 4 As shown, a stainless steel wire braided layer 388 is sleeved on the outside of the flexible tube 3.

[0029] The function of the stainless steel wire braided layer is to resist vibration fatigue and adapt to the deformation of the soft tube 2.

[0030] The diameter of the stainless steel wire braided layer is 0.1mm to 0.15mm.

[0031] A wire diameter <0.10mm makes it difficult to maintain braiding uniformity, while >0.25mm affects the bending of the pipe forming. Therefore, a wire diameter of 0.1mm~0.15mm is preferred. In this embodiment, the wire diameter of the stainless steel wire braided layer is 0.12mm.

[0032] The rigid tube 2 is an aluminum alloy tube.

[0033] Aluminum alloy tubes are lightweight and corrosion resistant.

[0034] The aluminum alloy used is 6061-T6.

[0035] The flexible tube 3 is a fluororubber tube.

[0036] Advantages of fluororubber: It is resistant to high temperatures (-20℃~200℃) and is suitable for electric vehicle heat pump refrigerants (such as R134a / R1234yf) or humid air in fuel cells.

[0037] Resistant to chemical corrosion (resistant to refrigerants, acid / alkali media, and hydrogen permeation in hydrogen fuel cell environments).

[0038] Low gas permeability (reduces the risk of refrigerant leakage).

[0039] See Figure 4 As shown, openings 211 are machined at both ends of the rigid tube 2. The diameter of the openings 211 is larger than the inner diameter of the rigid tube 2. A stepped surface is formed between the openings 211 and the inner wall of the rigid tube 2. An inner insertion end 331 is injection molded inside the sealing body 31. The inner insertion end 331 is inserted into the openings 211. The inner insertion end 331 and the openings 211 are press-fitted to form a seal. The inner wall of the inner insertion end 331 smoothly transitions to the inner wall of the rigid tube 2.

[0040] In the above technical solution, the inner insertion end 331 and the opening hole 211 cooperate to form a first seal, the annular groove and the annular convex ring cooperate to form a second seal, and the sealing body 31 and the sealing end 22 cooperate to form a triple seal.

[0041] See Figure 4 and Figure 5 As shown, a force-bearing part 321 is injection molded on the outer side of the sealing body 31. The force-bearing part 321 corresponds to the annular protrusion, and the connecting device 4 is fixed at the force-bearing part 321.

[0042] The thickness of the load-bearing part 321 is greater than the thickness of the sealing body 31. The benefit of the thickening treatment is that it works in conjunction with the connecting device 4 to play a vibration-resistant role.

[0043] The outer side of the force-bearing part 321 is machined with a first annular groove 322, and the connecting device 4 is positioned through the first annular groove 322.

[0044] See Figure 4 and Figure 6 As shown, the connecting device 4 includes an upper clamp 41, a lower clamp 42, and a connecting plate 43. The connecting plate 43 is fixed to the upper clamp 41 by machining or welding. A locking bolt 44 is fitted between the upper clamp 41 and the lower clamp 42. After the locking bolt 44 is tightened, the upper clamp 41 and the lower clamp 42 are clamped in the first annular groove 322 and press the force-bearing part 321.

[0045] After the upper clamp 41 and the lower clamp 42 are tightened, the force-bearing part undergoes elastic deformation, making the annular convex ring and the annular groove on its inner side fit more tightly, while preventing the soft tube 3 from coming out.

[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0048] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0049] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A compressor suction pipe assembly structure for new energy vehicles, comprising an interface end, the interface end is provided with two, one of which is connected with a compressor, and the other is connected with a filter or an evaporator, characterized in that: It also includes, A rigid tube, wherein annular grooves are machined on the outside of the rigid tube near both ends, and a tapered sealing end is machined on the outside of the rigid tube near the annular grooves. Two flexible tubes are provided, each installed at one end of a rigid tube. The end of the flexible tube furthest from the rigid tube is connected to the interface end. A sealing body is injection molded onto the end of the flexible tube connected to the rigid tube. The sealing body and the sealing end are press-fitted to form a seal. An annular protrusion that matches the annular groove is injection molded onto the inner wall of the sealing body. A connecting device that connects the flexible tube to the vehicle frame.

2. The compressor suction pipe assembly structure for new energy vehicles as claimed in claim 1, wherein: A stainless steel wire braided layer is fitted over the outside of the flexible tube.

3. The compressor suction pipe assembly structure for new energy vehicles as claimed in claim 2, characterized in that: The diameter of the stainless steel wire braided layer is 0.1mm to 0.15mm.

4. The compressor suction pipe assembly structure for new energy vehicles as claimed in claim 1, wherein: The rigid tube is an aluminum alloy tube.

5. The compressor suction pipe assembly structure for new energy vehicles as claimed in claim 1, wherein: The flexible tube is a fluororubber tube.

6. The compressor suction pipe assembly structure for new energy vehicles as claimed in claim 1, wherein: Openings are machined at both ends of the rigid tube, with the diameter of the openings being larger than the inner diameter of the rigid tube. A stepped surface is formed between the openings and the inner wall of the rigid tube. An inner insertion end is injection molded inside the sealing body. The inner insertion end is inserted into the opening and forms a seal after interference fit between the inner insertion end and the opening. The inner wall of the inner insertion end smoothly transitions to the inner wall of the rigid tube.

7. The compressor suction pipe assembly structure for new energy vehicles as claimed in claim 1, wherein: A force-bearing portion is injection molded on the outer side of the sealing body, the force-bearing portion corresponding to the annular protrusion, and the connecting device is fixed at the force-bearing portion.

8. The compressor suction pipe assembly structure for new energy vehicles as claimed in claim 7, characterized in that: The outer side of the force-bearing part is machined with a first annular groove, and the connecting device is positioned through the first annular groove.

9. The compressor suction pipe assembly structure for new energy vehicles as claimed in claim 8, characterized in that: The connecting device includes an upper clamp, a lower clamp, and a connecting plate. The connecting plate is fixed to the upper clamp. A locking bolt is fitted between the upper clamp and the lower clamp. After the locking bolt is tightened, the upper clamp and the lower clamp are clamped in the first annular groove and press the force-bearing part.

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