Accessory pre-fixing structure of collecting pipe

Abstract

The accessory pre-fixing structure comprises the collecting pipe and an accessory, the collecting pipe is composed of a slot plate and a cover plate which are matched with each other, the collecting pipe and the accessory are fixed through a fixing part, the accessory is provided with a first through hole, the cover plate is provided with a second through hole, and the first through hole is communicated with the second through hole. The fixing part comprises a rotating head and a limiting head, a connecting column is arranged between the rotating head and the limiting head, the limiting head and the connecting column can penetrate through the first through hole and the second through hole, the rotating head cannot penetrate through the first through hole, and the connecting column can rotate in the first through hole and the second through hole; after the limiting head penetrates through the first through hole and the second through hole, the fixing piece is rotated, so that the limiting head cannot retreat from the second through hole. The fixing device has the advantages of being reasonable in structure, convenient to operate and reliable in fixation.

Description

Technical Field

[0001] The utility model relates to the technical field of manifold manufacturing, and particularly to a pre-fixing structure for accessories of a manifold. Background Art

[0002] The manifold is one of the important components in the air-conditioning system. The function of the manifold in the air conditioner is as follows: The refrigerant in the air conditioner is compressed by the compressor to generate a high-temperature and high-pressure liquefied gas, which becomes a low-temperature and high-pressure liquid after heat dissipation and condensation through the heat exchanger, and then enters the manifold for collection.

[0003] Some of the existing manifolds adopt a butting structure composed of a slot plate and a cover plate, and are fixed by brazing. By using this brazing step, the accessories on the manifold can also be fixed by brazing, eliminating the trouble of separate welding of the accessories. Before sending the manifold and the accessories into the brazing furnace, the accessories need to be pre-fixed on the manifold.

[0004] In the existing structure, as disclosed in a manifold in the patent application with the application number CN201590001362.0 and the name "Manifold for a Heat Exchanger, Assembly Comprising Such a Manifold, and Heat Exchanger", the longitudinal edge of the manifold plate (i.e., the slot plate) is positioned away from the cover in at least one area to allow subsequent crimping of the component by folding a longitudinal adjacent portion adjacent to the edge of the manifold plate over the attached component, so that a part of the component is thereby fixed between the cover and the manifold plate. However, this fixing structure is complex and has high requirements for processing, resulting in high processing costs. Therefore, the pre-fixing structure for accessories of the existing manifold needs to be further improved. Summary of the Utility Model

[0005] The purpose of the utility model is to make up for the above deficiencies and disclose to the society a pre-fixing structure for accessories of a manifold with reasonable structure, convenient operation and reliable fixation.

[0006] The technical solution of the utility model is realized as follows:

[0007] A pre-fixing structure for accessories of a manifold includes a manifold and an accessory. The manifold is composed of a slot plate and a cover plate that are adapted to each other. The manifold and the accessory are fixed by a fixing member. The accessory is provided with a first through hole, and the cover plate is provided with a second through hole. The fixing member includes a rotating head and a limiting head. A connecting column is arranged between the rotating head and the limiting head. The limiting head and the connecting column can pass through the first through hole and the second through hole, while the rotating head cannot pass through the first through hole. The connecting column can rotate in the first through hole and the second through hole; when the limiting head passes through the first through hole and the second through hole, the fixing member is rotated so that the limiting head cannot withdraw from the second through hole.

[0008] Measures to further optimize this technical solution are as follows:

[0009] As an improvement, the inner surface of the cover plate is an arc surface that is higher in the middle and lower at both sides, and the long-diameter ends of the upper surface of the limiting head are in contact with the arc surface. When the fixing member rotates and locks, due to the lower sides of the arc surface, as the fixing member rotates, the fixing member is tightened, thereby fixing the accessory to the manifold.

[0010] As an improvement, a plane adapted to the lower surface of the rotating head is provided on the accessory. With this setting, the bonding between the rotating head and the accessory when the fixing member is locked can be improved, and the reliability of fixation can be enhanced.

[0011] As an improvement, the first through hole and the second through hole are elliptical holes of the same size.

[0012] As an improvement, the connecting column is of a cylindrical structure.

[0013] As an improvement, the cross-section of the slot plate is a U-shaped structure with an upward opening, and the cross-section of the cover plate is a U-shaped structure with a downward opening.

[0014] As an improvement, a contact arc surface adapted to the upper surface of the cover plate is provided on the accessory, and the contact arc surface is in close fit with the upper surface of the cover plate. The setting of the contact arc surface can increase the contact area between the accessory and the manifold, thereby improving the reliability of brazing.

[0015] As an improvement, solder layers are compounded on the inner and outer surfaces of the slot plate and the cover plate. With this setting, the processing efficiency can be improved and the defective rate can be reduced.

[0016] As an improvement, a limiting boss protruding inward is provided on the slot plate, and the cover plate is in limiting support fit with the upper end of the limiting boss.

[0017] As an improvement, the limiting boss is punched from the outside to the inside on the slot plate.

[0018] The advantages of the present utility model compared with the prior art are as follows:

[0019] The pre-fixing structure of the accessory of the manifold of the present utility model has a reasonable structure. It is fixed by a fixing member. When fixing, the limiting head and the connecting column of the fixing member are passed through the first through hole and the second through hole, and then the fixing member is rotated to lock. The operation is convenient. After the fixing member rotates, the limiting head cannot escape from the second through hole to form a fixation, thereby fixing the accessory on the manifold. Brief Description of the Drawings

[0020] Figure 1 is the three-dimensional structure diagram of the embodiment of the present utility model;

[0021] Figure 2 is a cross-sectional view of an embodiment of the present utility model;

[0022] Figure 3 is an exploded view of an embodiment of the present utility model;

[0023] Figure 4 is Figure 3 an enlarged view of part A in

[0024] Figure 5 is Figure 3 a three-dimensional structural diagram of the fixing member in

[0025] Figure 6 is Figure 3 a top view of the accessory in

[0026] Reference numerals: manifold 1, slot plate 11, limiting boss 11a, cover plate 12, second through hole 12a, arc surface 12b, accessory 2, first through hole 2a, flat surface 2b, contact arc surface 2c, fixing member 3, rotating head 31, limiting head 32, connecting column 33. Detailed implementation manners

[0027] The present utility model will be further described in detail below with reference to the accompanying drawings:

[0028] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description can be used in other implementation schemes, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present utility model.

[0029] Those skilled in the art should understand that in the disclosure of the present utility model, the orientations or positions indicated by the terms "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or position relationships shown in the drawings. It is only for the convenience of simplifying the description of the present utility model, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present utility model.

[0030] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "one" should not be construed as a limitation on the number.

[0031] As Figures 1 to 6As shown in the figure, an accessory pre-fixing structure of a manifold includes a manifold 1 and an accessory 2. The manifold 1 is composed of a mating slot plate 11 and a cover plate 12. The manifold 1 and the accessory 2 are fixed by a fixing member 3. A first through hole 2a is provided on the accessory 2, and a second through hole 12a is provided on the cover plate 12. The fixing member 3 includes a rotating head 31 and a limiting head 32. A connecting column 33 is provided between the rotating head 31 and the limiting head 32. The limiting head 32 and the connecting column 33 can pass through the first through hole 2a and the second through hole 12a, while the rotating head 31 cannot pass through the first through hole 2a. The connecting column 33 can rotate within the first through hole 2a and the second through hole 12a. After the limiting head 32 passes through the first through hole 2a and the second through hole 12a, the fixing member 3 is rotated so that the limiting head 32 cannot withdraw from the second through hole 12a.

[0032] The inner surface of the cover plate 12 is an arc surface 12b that is high in the middle and low on both sides. The long diameter ends of the upper surface of the limiting head 32 abut against the arc surface 12b. With such a setting, when the fixing member 3 is rotated and locked, due to the low sides of the arc surface 12b, as the fixing member 3 rotates, the fixing member 3 is tightened downward, thereby firmly fixing the accessory 2 to the manifold 1.

[0033] A plane 2b adapted to the lower surface of the rotating head 31 is provided on the accessory 2. After the fixing member 3 is locked, the lower surface of the rotating head 31 is in close contact with the plane 2b, which can improve the bonding between the rotating head 31 and the accessory 2 when the fixing member 3 is locked and enhance the reliability of the fixation.

[0034] The first through hole 2a and the second through hole 12a are elliptical holes of the same size. The limiting head 32 is also an elliptical structure. The major axis length of the limiting head 32 is greater than the minor axis length of the second through hole 12a and less than the major axis length of the second through hole 12a. The first through hole 2a and the second through hole 12a can also be waist-shaped holes, rectangular holes, etc.

[0035] The accessory pre-fixing structure of the present utility model is very convenient to operate. The accessory 2 is placed at the set position of the manifold 1, so that the first through hole 2a on the accessory 2 is aligned with the second through hole 12a on the cover plate 12. The limiting head 32 and the connecting column 33 of the fixing member 3 are passed through the first through hole 2a and the second through hole 12a, so that the limiting head 32 enters the manifold 1, and then the fixing member 3 is rotated by 90° ± 30°.

[0036] The cross-section of the slot plate 11 is a U-shaped structure with an upward opening, and the cross-section of the cover plate 12 is a U-shaped structure with a downward opening.

[0037] A contact arc surface 2c adapted to the upper surface of the cover plate 12 is provided on the accessory 2, and the contact arc surface 2c is in close fit with the upper surface of the cover plate 12. The contact arc surface 2c of the accessory 2 is in close fit with the upper surface of the U-shaped cover plate 12, increasing the contact area between the accessory 2 and the manifold 1 and improving the reliability of brazing.

[0038] Solder layers are compounded on the inner and outer surfaces of the slot plate 11 and the cover plate 12. The slot plate 11 and the cover plate 12 are formed by plate molding, and solder layers are compounded on the upper and lower surfaces of the plate. In this way, when processing the slot plate 11 and the cover plate 12, there is no need to distinguish between the front and back sides, which can improve the processing efficiency; it also avoids the unqualified manifold products caused by the wrong placement of the front and back sides during molding.

[0039] A limiting boss 11a protruding inward is provided on the slot plate 11, and the cover plate 12 is in limiting support fit with the upper end of the limiting boss 11a.

[0040] The limiting boss 11a is punched from the outside to the inside on the slot plate 11.

[0041] When installing the cover plate 12, the cover plate 12 is limited and supported by the limiting boss 11a, which can improve the assembly efficiency; after the cover plate 12 is installed, the upper part of the slot plate 11 is bent along the deformation groove to tightly hold the cover plate 12, and the cover plate 12 is fixed to prevent it from shifting during brazing.

[0042] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An attachment pre-fixing structure for a manifold, comprising a manifold (1) and an attachment (2), wherein the manifold (1) is composed of a mating slot plate (11) and a cover plate (12), and is characterized in that: The described manifold (1) and the accessory (2) are fixed by a fixing member (3). A first through hole (2a) is provided on the accessory (2), and a second through hole (12a) is provided on the cover plate (12). The fixing member (3) includes a rotating head (31) and a limiting head (32). A connecting column (33) is provided between the rotating head (31) and the limiting head (32). The limiting head (32) and the connecting column (33) can pass through the first through hole (2a) and the second through hole (12a), while the rotating head (31) cannot pass through the first through hole (2a). The connecting column (33) can rotate within the first through hole (2a) and the second through hole (12a). After the limiting head (32) passes through the first through hole (2a) and the second through hole (12a), the fixing member (3) is rotated so that the limiting head (32) cannot withdraw from the second through hole (12a).

2. The pre-fixed structure of the accessory of the manifold according to claim 1, wherein: The inner surface of the described cover plate (12) is an arc surface (12b) that is higher in the middle and lower on both sides. The long diameter ends of the upper surface of the limiting head (32) are in contact with the arc surface (12b).

3. The pre-fixed structure of the accessory of the manifold according to claim 2, characterized in that: A plane (2b) adapted to the lower surface of the rotating head (31) is provided on the accessory (2).

4. The pre-fixed structure of the accessory of the manifold according to claim 3, characterized in that: The first through hole (2a) and the second through hole (12a) are elliptical holes of the same size.

5. The accessory pre-fixing structure of the manifold according to claim 4, characterized in that: The connecting column (33) has a cylindrical structure.

6. The pre-fixed structure of the accessory of the manifold according to any one of claims 1 to 5, characterized in that: The cross-section of the described slot plate (11) is a U-shaped structure with an upward opening, and the cross-section of the cover plate (12) is a U-shaped structure with a downward opening.

7. The accessory pre-fixing structure of the manifold according to claim 6, characterized in that: A contact arc surface (2c) adapted to the upper surface of the cover plate (12) is provided on the accessory (2), and the contact arc surface (2c) is in close fit with the upper surface of the cover plate (12).

8. The accessory pre-fixing structure of the manifold according to claim 7, characterized in that: Solder layers are compounded on the inner and outer surfaces of the slot plate (11) and the cover plate (12).

9. The accessory pre-fixing structure of the manifold according to claim 8, characterized in that: A limiting boss (11a) protruding inward is provided on the slot plate (11), and the cover plate (12) is in limiting support cooperation with the upper end of the limiting boss (11a).

10. The pre-fixing structure of the accessory of the manifold according to claim 9, characterized in that: The limiting boss (11a) is formed by punching from the outside to the inside on the slot plate (11).

Images