Connecting structure of heat exchanger and large-diameter valve block and automobile

Abstract

The utility model discloses a connecting structure of a heat exchanger and a large-diameter valve block and an automobile. The connecting structure of the heat exchanger and the large-diameter valve block comprises a connecting hole formed in a bottom plate of the heat exchanger and an internal thread arranged on the large-diameter valve block, an elastic supporting piece is arranged in the connecting hole in a matched mode, a through hole allowing a connecting bolt to pass through is formed in the elastic supporting piece, an opening is formed in the side wall of the elastic supporting piece, and the opening is matched with the connecting hole. The connecting bolt penetrates through the through hole to be screwed with the internal thread, so that the two ends of the elastic supporting piece abut against the nut end of the connecting bolt and the large-diameter valve block respectively. The automobile comprises the connecting structure of the heat exchanger and the large-diameter valve block. The large-diameter valve block has the advantages that the elastic supporting pieces are arranged in the connecting holes in a matched mode, axial force generated when the connecting bolts are screwed is borne through the elastic supporting pieces, and the situation that threads of the internal threads cannot be meshed (slipped) due to the fact that the connecting position of the heat exchanger bottom plate and the large-diameter valve block deforms is avoided. The quality of the automobile is good.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile part structures, in particular to a connection structure of a heat exchanger and a large-caliber valve block and an automobile. Background Art

[0002] When assembling the heat exchanger and the large-diameter valve block, screws are generally used for easy disassembly. During assembly, one end of the large-diameter valve block is first connected to the refrigerant outlet at the top of the heat exchanger as the main positioning, and then the other end of the large-diameter valve block is connected to the bottom plate of the heat exchanger as the auxiliary positioning.

[0003] In actual assembly, before the above positioning assembly, it is necessary to weld the condensing plate of the heat exchanger. In the process of welding the condensing plate, there is inevitable deformation. Since it is impossible to estimate the exact deformation of the parts, in order to ensure that they can be connected at the auxiliary positioning, there will be a gap between the bottom plate of the heat exchanger and the large-diameter valve block. After the screws are continuously tightened with torque, the bottom plate of the heat exchanger and the large-diameter valve block are fitted and connected, resulting in deformation of the connection between the two parts, making it impossible for the threads at the auxiliary positioning to bite (slippage), and may also cause plastic deformation failure of the bottom plate of the heat exchanger and the large-diameter valve block. Utility Model Content

[0004] The technical problem to be solved by the utility model is that there is a gap between the bottom plate of the heat exchanger and the large-diameter valve block. After the screws are continuously tightened with torque, the bottom plate of the heat exchanger and the large-diameter valve block are fitted together, which may cause deformation at the connection between the bottom plate of the heat exchanger and the large-diameter valve block, making it impossible for the screw threads at the auxiliary positioning to bite (slipping). The purpose is to provide a connection structure between the heat exchanger and the large-diameter valve block, which solves the problem that the screw threads at the auxiliary positioning may not bite after the screws are continuously tightened with torque.

[0005] The utility model is realized by the following technical solutions:

[0006] A connection structure between a heat exchanger and a large-diameter valve block, comprising a connection hole arranged on a bottom plate of the heat exchanger, an internal thread arranged on the large-diameter valve block, an elastic support member fitted in the connection hole, a through hole for a connecting bolt to pass through arranged on the elastic support member, an opening arranged on a side wall of the elastic support member, the connecting bolt passing through the through hole and being screwed into the internal thread, so that the two ends of the elastic support member respectively abut against the nut end of the connecting bolt and the large-diameter valve block.

[0007] The utility model adopting the above scheme has an elastic support member in the connection hole, and a through hole for the connection bolt to pass through is provided on the elastic support member. After the connection bolt passes through the through hole of the elastic support member, it is screwed with the internal thread of the large-diameter valve block, and the two ends of the elastic support member are respectively against the nut end of the connection bolt and the large-diameter valve block. The elastic support member bears the axial force when the connection bolt is tightened, and the heat exchanger bottom plate and the large-diameter valve block bear the axial force when the connection bolt is tightened, so as to prevent the connection between the heat exchanger bottom plate and the large-diameter valve block from being deformed so that the thread of the internal thread cannot be engaged (slipping), and also prevent the heat exchanger bottom plate and the large-diameter valve block from plastic deformation and failure. An opening is also provided on the side wall of the elastic support member, so that the outer side of the elastic support member can be kept in contact with the connection hole through the opening, and the elastic support member is radially positioned to ensure the stability of the connection.

[0008] Preferably, the elastic support member is in an elongated strip shape as a whole, and the through hole extends along the axis of the elastic support member.

[0009] In this way, by making the elastic support member as a whole into a long strip, the two ends of the elastic support member can respectively abut against the nut end of the connecting bolt and the large-diameter valve block when the bolt is tightened, and the through hole is extended along the axis of the elastic support member to ensure that the connecting bolt is coaxial with the internal thread.

[0010] Preferably, the outer side of the elastic support is cylindrical, and the cross section of the connecting hole matched with the outer side of the elastic support is circular. In this way, by matching the outer side of the elastic support with the cylindrical shape and the connecting hole with a circular cross section, the elastic support can slide axially when tightening the connecting bolt.

[0011] Preferably, the outer side of the elastic support member is polygonal, and the cross-section of the connecting hole matched with the outer side of the elastic support member is polygonal.

[0012] In this way, by matching the polygonal outer side of the elastic support with the polygonal cross-section of the connecting hole, the elastic support can slide axially during the tightening of the connecting bolt, while preventing the elastic support from rotating in the connecting hole, thereby ensuring the stability of the connection point.

[0013] Preferably, inclined portions are formed on the outer sides of both ends of the elastic support member, and the inclined portions are inclined from the outer side of the elastic support member to the end surface thereof.

[0014] In this way, by forming inclined portions on the outer sides of both ends of the elastic support member, the inclined portions are inclined from the outer side of the elastic support member to the end surface close to it, which facilitates reducing the difficulty of assembling the elastic support member into the connecting hole.

[0015] Preferably, the elastic support member is clearance-matched with the connecting bolt.

[0016] In this way, by matching the elastic support member with the connecting bolt through clearance, the difficulty of screwing the connecting bolt with the internal thread can be reduced.

[0017] Preferably, the opening is parallel to the axis of the elastic support member.

[0018] Preferably, the elastic support member is elastically matched with the connecting hole.

[0019] In this way, by elastically matching the elastic support member with the connecting hole, it is convenient to utilize the restoring force of the elastic support member to act on the side wall of the connecting hole to radially position the elastic support member and prevent the elastic support member from radially moving and affecting the stability of the connection point.

[0020] Preferably, one end of the elastic support member away from the large-diameter valve block extends out of the heat exchanger bottom plate by 2 mm to 3 mm.

[0021] In this way, by extending the end of the elastic support away from the large-diameter valve block 2mm to 3mm from the heat exchanger bottom plate, it is prevented that when the connecting bolts are tightened, the nuts of the connecting bolts contact the heat exchanger bottom plate and exert force on the heat exchanger bottom plate, causing deformation of the heat exchanger bottom plate.

[0022] Another aspect of the utility model provides a vehicle, comprising a connection structure between a heat exchanger and a large-diameter valve block.

[0023] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0024] 1. By matching the elastic support piece in the connection hole, it is convenient for the connection bolt to pass through the through hole of the elastic support piece and then be screwed with the internal thread of the large-diameter valve block, so that the two ends of the elastic support piece are respectively against the nut end of the connection bolt and the large-diameter valve block, and the elastic support piece bears the axial force when the connection bolt is tightened, and the heat exchanger bottom plate and the large-diameter valve block bear the axial force when the connection bolt is tightened, so as to prevent the connection between the heat exchanger bottom plate and the large-diameter valve block from being deformed so that the thread of the internal thread cannot be engaged (slipping).

[0025] 2. By setting elastic supports to bear the axial force when the connecting bolts are tightened, the plastic deformation failure of the heat exchanger bottom plate and the large-diameter valve block can be prevented.

[0026] 3. An opening is provided on the side wall of the elastic support member, so that the outer side of the elastic support member can be kept in contact with the connecting hole through the opening, and the elastic support member can be radially positioned to ensure the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0028] Figure 1 It is a structural diagram of the utility model;

[0029] Figure 2 It is a partial structural diagram of the utility model;

[0030] Figure 3 This is a structural diagram of the elastic support member in the utility model;

[0031] Figure 4 This is another structural diagram of the elastic support member in the utility model.

[0032] Marks and corresponding parts names in the attached drawings:

[0033] Elastic support member 10 , opening 101 , inclined portion 102 , heat exchanger 20 , heat exchanger bottom plate 201 , connecting hole 2011 , large-diameter valve 30 , internal thread 31 , connecting bolt 40 . DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0035] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any appropriate combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the diagrams provided herein are for illustrative purposes, and the diagrams are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0036] In the description of the present invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0037] The terms "first", "second", etc. used in the present invention are only used to distinguish the corresponding components for the purpose of clarity of description, and are not intended to limit any order or emphasize importance, etc. In addition, the term "connected" used in this article can be directly connected or indirectly connected via other components without special explanation.

[0038] Example 1

[0039] This embodiment 1 provides a connection structure between a heat exchanger and a large-diameter valve block, such as Figure 1-Figure 4 As shown, it includes a connecting hole 2011 arranged on the bottom plate 201 of the heat exchanger, and an internal thread 31 arranged on the large-diameter valve 30 block. The connecting hole 2011 is matched with an elastic support member 10, and the elastic support member 10 is provided with a through hole for the connecting bolt 40 to pass through. The side wall of the elastic support member 10 is provided with an opening 101. The connecting bolt 40 passes through the through hole and is screwed with the internal thread 31, so that the two ends of the elastic support member 10 are respectively abutted against the nut end of the connecting bolt 40 and the large-diameter valve 30 block.

[0040] See also Figure 3 and Figure 4 The elastic support member 10 is in an elongated strip shape as a whole, and the through hole extends along the axis of the elastic support member 10 .

[0041] By making the elastic support member 10 as a whole into an elongated strip, the two ends of the elastic support member 10 can respectively abut against the nut end of the connecting bolt 40 and the large-diameter valve block 30 when the bolt is tightened, and the through hole is extended along the axis of the elastic support member 10 to ensure that the connecting bolt 40 is coaxial with the internal thread 31.

[0042] See also Figure 1 and Figure 3 The outer side of the elastic support member 10 is cylindrical, and the cross section of the connecting hole 2011 matched with the outer side of the elastic support member 10 is circular, so that the elastic support member 10 can slide along the axial direction during the process of tightening the connecting bolt 40.

[0043] See also Figure 4The outer side of the elastic support member 10 is polygonal, and the cross section of the connection hole 2011 matched with the outer side of the elastic support member 10 is polygonal. This facilitates the elastic support member 10 to slide along the axial direction during the process of tightening the connection bolt 40, and also prevents the elastic support member 10 from rotating in the connection hole 2011, thereby ensuring the stability of the connection point.

[0044] See also Figure 1 and Figure 3 The outer sides of both ends of the elastic support member 10 are formed with inclined portions 102, and the inclined portions 102 are inclined from the outer side of the elastic support member 10 to the end surface close to it, so as to reduce the difficulty of assembling the elastic support member 10 into the connecting hole 2011.

[0045] See also Figure 1 The elastic support member 10 is loosely matched with the connecting bolt 40 , so as to reduce the difficulty of screwing the connecting bolt 40 with the internal thread 31 .

[0046] See also Figure 3 and Figure 4 , the opening 101 is parallel to the axis of the elastic support member 10 .

[0047] See also Figure 1 , the elastic support member 10 is elastically matched with the connecting hole 2011. It is convenient to use the restoring force of the elastic support member 10 to act on the side wall of the connecting hole 2011 to radially position the elastic support member 10. The elastic matching in the utility model refers to the matching relationship when the elastic support member 10 has a restoring force acting on the inner side of the connecting hole 2011.

[0048] See also Figure 1 The end of the elastic support member 10 away from the large-diameter valve 30 extends out of the heat exchanger bottom plate 201 by 2 mm to 3 mm. This prevents the nut of the connecting bolt 40 from contacting the heat exchanger bottom plate 201 and exerting force on the heat exchanger bottom plate 201 when tightening the connecting bolt 40, causing the heat exchanger bottom plate 201 to deform.

[0049] Specifically, the end of the elastic support member 10 away from the large-diameter valve 30 extends out of the heat exchanger bottom plate 201 for a short distance and cannot be connected. The nut end of the bolt 40 will contact the heat exchanger bottom plate 201, causing the heat exchanger bottom plate 201 to be stressed and possibly deformed. If the end of the elastic support member 10 away from the large-diameter valve 30 extends out of the heat exchanger bottom plate 201 for a long distance, the connection point may be insufficiently stable.

[0050] During operation, one end of the large-diameter valve 30 is first installed at the top refrigerant outlet position of the heat exchanger 20 for main positioning connection, and then the large-diameter valve 30 is connected to the heat exchanger bottom plate 201 for auxiliary positioning connection. During the auxiliary positioning connection, the elastic support member 10 is first elastically fitted in the connection hole 2011 on the heat exchanger bottom plate 201, and then the connecting bolt 40 is passed through the through hole of the elastic support member 10 and gradually screwed with the internal thread 31 on the large-diameter valve 30. During the screwing process, the elastic support member 10 abuts against the nut end of the connecting bolt 40, and the elastic support member 10 moves axially along the connection hole 2011 until it abuts against the large-diameter valve 30. Finally, the connecting bolt 40 is tightened so that the axial force of the connecting bolt 40 is applied to the elastic support member 10.

[0051] Embodiment 2, an automobile, including a connection structure between a heat exchanger and a large-caliber valve block. The automobile may include a passenger car, a commercial vehicle, an off-road vehicle, a dump truck, a semi-trailer and a special-purpose vehicle.

[0052] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A connection structure between a heat exchanger and a large-diameter valve block, characterized in that: It includes a connecting hole arranged on the bottom plate of the heat exchanger and an internal thread arranged on the large-diameter valve block. An elastic support member is matched in the connecting hole. The elastic support member is provided with a through hole for the connecting bolt to pass through. An opening is provided on the side wall of the elastic support member. The connecting bolt passes through the through hole and is screwed into the internal thread, so that the two ends of the elastic support member are respectively abutted against the nut end of the connecting bolt and the large-diameter valve block.

2. The connection structure between the heat exchanger and the large-diameter valve block according to claim 1 is characterized in that: The elastic support member is in an elongated strip shape as a whole, and the through hole extends along the axis of the elastic support member.

3. The connection structure between the heat exchanger and the large-diameter valve block according to claim 1, characterized in that: The outer side of the elastic support member is cylindrical, and the cross section of the connecting hole matched with the outer side of the elastic support member is circular.

4. The connection structure between the heat exchanger and the large-diameter valve block according to claim 1, characterized in that: The outer side of the elastic support member is polygonal, and the cross section of the connecting hole matched with the outer side of the elastic support member is polygonal.

5. The connection structure between the heat exchanger and the large-diameter valve block according to any one of claims 1 to 4, characterized in that: Inclined portions are formed on the outer sides of both ends of the elastic support member.

6. The connection structure between the heat exchanger and the large-diameter valve block according to any one of claims 1 to 4, characterized in that: The elastic support member is loosely matched with the connecting bolt.

7. The connection structure between the heat exchanger and the large-diameter valve block according to any one of claims 1 to 4, characterized in that: The opening is parallel to the axis of the elastic supporting member.

8. The connection structure between a heat exchanger and a large-diameter valve block according to any one of claims 1 to 4, characterized in that: The elastic support piece is elastically matched with the connecting hole.

9. The connection structure between a heat exchanger and a large-diameter valve block according to any one of claims 1 to 4, characterized in that: One end of the elastic support member away from the large-diameter valve block extends out of the heat exchanger bottom plate by 2 mm to 3 mm.

10. An automobile, characterized in that: The invention comprises a connection structure between a heat exchanger and a large-diameter valve block as described in any one of claims 1 to 9.

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