Skeleton for conductive device

Abstract

The utility model provides a framework for a conductive device, which is applied to the technical field of new energy automobile electric drive systems, and is characterized in that an elastic connecting piece is fixedly connected between the outer edge of a bottom plate and an outer side plate, and the outer side plate is used for being pressed in a machine shell, so that the outer side plate in a pressed state is flexibly connected with the bottom plate through the elastic deformation of the elastic connecting piece. The outer side plate can be flexibly connected with the bottom plate through elastic deformation of the elastic connecting piece, the inward collapse deformation degree of the outer side plate can be absorbed, the outer side plate in the press-fitting state does not need to rigidly abut against the bottom plate, the press-fitting force of the outer side plate in the press-fitting state is reduced, the degree of chippings generated during press-fitting of the outer side plate is reduced, and the press-fitting efficiency is improved. And the probability of cold welding is reduced, so that the press fitting yield is improved. In addition, the probability that deformation of the outer side plate is transmitted to the bottom plate is reduced, and the installation fixing degree of the conductive piece on the bottom plate is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric drive systems of new energy vehicles, and particularly relates to a framework for an electrically conductive device. BACKGROUND

[0002] With the popularization of 800V technology of new energy vehicles, higher voltage levels bring new challenges to the drive system. The induced voltage generated by the motor rotor is getting higher and higher. When the oil film in the bearing cannot achieve effective insulation performance, the energy accumulated by the rotor will form an electric arc when the insulation oil film is broken, which will injure the bearing balls and raceways. The injured balls and raceways will become the weak points of the bearing oil film, thereby accelerating the frequency of the bearing being injured by the electric arc and speeding up the damage speed. Therefore, during the use of the motor, a bearing protection device is usually used to protect the bearing of the motor, which can effectively control the shaft voltage and bearing current.

[0003] The existing bearing protection scheme is to establish a shaft voltage discharge channel outside the bearing to protect the bearing from electric corrosion in a pressure relief manner, thereby prolonging the service life of the bearing. In the related technology, there is an electrically conductive ring including an electrically conductive fiber assembly, a base, and a cover. The base is provided with a mounting groove for mounting the electrically conductive fiber assembly. The electrically conductive fiber assembly is fixed in the mounting groove through the cover. The base is press-fitted in the machine shell through interference fit. Since the base as a whole has rigidity, the press-fitting force is large when being fitted into the machine shell, which is easy to cause poor press-fitting.

[0004] Therefore, a new technical scheme is needed. SUMMARY

[0005] Therefore, the present application provides a framework for an electrically conductive device.

[0006] The present application provides the following technical scheme:

[0007] According to the framework for the electrically conductive device provided by the present application, the bottom plate is used for mounting the electrically conductive member, and the elastic connecting piece is fixedly connected between the outer edge of the bottom plate and the outer side plate, so that the outer side plate in the press-fitted state is flexibly connected to the bottom plate through the elastic deformation of the elastic connecting piece.

[0008] Preferably, the elastic connecting piece includes a first piece part and a second piece part connected at an included angle, so as to form a channel structure for elastic deformation through the change of the included angle between the bottom plate and the outer side plate.

[0009] Preferably, the included angle between the first piece part and the second piece part is an acute angle.

[0010] Preferably, the first piece part connects the bottom plate, the second piece part connects the bottom of the outer side plate, the second piece part is formed in the same plate surface with the outer side plate; the included angle between the first piece part and the bottom plate is obtuse; the included angle between the first piece part and the second piece part is 10-30 degrees.

[0011] Preferably, the bottom plate and the outer side plate are annular, and the outer side plate is arranged around the outer edge of the bottom plate, so that the channel structure is arranged in an annular shape.

[0012] Preferably, the first piece part and the second piece part are connected by an arc-shaped connecting part.

[0013] Preferably, the outer side plate is arranged as an elastic plate.

[0014] Preferably, the skeleton is an integrated stamping frame.

[0015] Preferably, the skeleton is a stainless steel frame.

[0016] Preferably, the thickness of the skeleton is 0.2-0.5 mm, so that the skeleton forms a thin-walled structure.

[0017] Preferably, the surface of the skeleton is electroplated with a soldering-assisted metal.

[0018] Preferably, the bottom plate is provided with a positioning groove and / or a positioning hole for positioning the conductive part.

[0019] Preferably, the inner edge of the bottom plate is used to assist in positioning the conductive part by cooperating with the positioning groove and / or the positioning hole.

[0020] Preferably, the skeleton is annular as a whole, and the positioning grooves and / or the positioning holes are circumferentially distributed on the bottom plate.

[0021] Compared with the prior art, the above at least one technical solution adopted by the present application can achieve at least the following beneficial effects:

[0022] When the outer side plate is interference-fitted, for example, interference-fitted into a machine shell, the outer side plate can be flexibly connected to the bottom plate through elastic deformation of the elastic connecting part, and can absorb the degree of inward collapse deformation of the outer side plate. The outer side plate in the interference-fitted state does not need to be rigidly supported against the bottom plate, thereby reducing the interference-fitting force of the outer side plate in the interference-fitted state, improving the degree of debris generated when the outer side plate is interference-fitted, reducing the probability of cold welding, and improving the interference-fitting yield. In addition, the probability of deformation of the outer side plate being transmitted to the bottom plate is reduced, and the installation and fixing degree of the conductive part on the bottom plate is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the first overall structure of a conductive device in this application;

[0025] Figure 2 This is a second overall structural schematic diagram of a conductive device in this application;

[0026] Figure 3 This is an exploded schematic diagram of a conductive device in this application;

[0027] Figure 4 This is a cross-sectional view of a conductive device in this application;

[0028] Figure 5 This is a schematic diagram of the overall structure of another conductive device in this application.

[0029] Reference numerals: 1. Skeleton; 101. Outer side plate; 102. Positioning recess; 103. Elastic connector; 1031. First piece; 1032. Second piece; 1033. Arc-shaped connector; 104. Base plate; 2. Conductive component; 201. Fixer; 202. Fiber bundle; 203. First positioning protrusion; 204. Second positioning protrusion. Detailed Implementation

[0030] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0031] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] It is to be understood that the embodiments described herein are for illustrative purposes and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this application and scope of the appended claims. It is also to be understood that the various aspects described herein can be implemented in any number of ways, and that the embodiments described herein describe specifically illustrative aspects only and are not meant to be limiting.

[0033] It is also to be understood that the drawings provided herein are for illustrative purposes only and that the actual implementation of the application can vary in terms of shape, size, and arrangement of components without departing from the spirit and scope of the application.

[0034] In addition, in the following description, specific details are provided to thoroughly understand examples. However, one of ordinary skill in the art will understand that the application can be practiced without these specific details.

[0035] The applicant has found through in-depth research and improvement of the manufacturing process of the bearing conductive device and the conductive ring that the Chinese utility model patent document CN217643069U discloses a fiber fixator, a bearing electrocorrosion protection conductive ring, and a motor. The fiber fixator is installed through a support, and a cover plate is fixed on the outer side. However, the structure is relatively complex, the installation process is cumbersome, and the manufacturing cost is high.

[0036] The conductive ring of the prior art solution generally uses an aluminum alloy shell, and the customer's shell for installing the conductive ring is also made of aluminum alloy. During the interference press-fitting process of the two aluminum alloy materials, the problem of "cold welding" is inevitably caused, resulting in "aluminum chips" or excessive press-fitting force during the press-fitting process.

[0037] The existing technical solutions all have the problem of complex structure. The conductive ring is generally assembled by multiple components with bolts or rivets. The complex structure design leads to a complex production process, increases the design difficulty and cost of the automatic production line, and also leads to high material cost, which is difficult to optimize.

[0038] Based on this, the technical solutions provided by the embodiments of the application are described below in conjunction with the drawings.

[0039] The embodiment of the present specification provides a skeleton for a conductive device, such as Figure 1 ,Figure 2 and Figure 5 As shown in

[0040] As shown in Figure 3 and Figure 4 , the skeleton 1 includes a bottom plate 104, an outer side plate 101 and an elastic connecting piece 103; the bottom plate 101 is used for mounting the conductive member 2. The outer side plate 101 is arranged around the outer edge of the bottom plate 104, and the elastic connecting piece 103 is fixedly connected between the outer edge of the bottom plate 104 and the outer side plate 101. The outer side plate 101 can be used for press-fitting in the shell, so that the outer side plate 101 in the press-fitting state is flexibly connected to the bottom plate 104 through the elastic deformation of the elastic connecting piece 103. Wherein, the conductive related components can be arranged on the bottom plate 104, and the shell is for example the shell of the motor. The outer side plate 101 and the bottom plate 104 can be arranged perpendicular to each other. The outer side plate 101 is used for interference fit installation with the shell part of the customer.

[0041] In an embodiment, as shown in Figure 3 and Figure 4 , the elastic connecting piece 103 includes a first piece part 1031 and a second piece part 1032 connected at an included angle, so as to form a channel structure between the bottom plate 104 and the outer side plate 101, which generates elastic deformation through the change of the included angle. The cross section of the channel structure is for example V-shaped bend, inverted V-shaped bend, U-shaped bend or inverted U-shaped bend.

[0042] In an embodiment, as shown in Figure 3 and Figure 4 , the bottom plate 104 and the outer side plate 101 are both circular rings, and the outer side plate 101 is arranged around the outer edge of the bottom plate 104, so that the channel structure is arranged in a ring shape.

[0043] In an embodiment, as shown in Figure 3 and Figure 4 , the included angle between the first piece part 1031 and the second piece part 1032 is an acute angle.

[0044] In an embodiment, as shown in Figure 3 and Figure 4 , the first piece part 1031 is connected to the bottom plate 104, and the second piece part 1032 is connected to the bottom of the outer side plate 101, and the second piece part 1032 is formed on the same plate surface as the outer side plate 101; the included angle between the first piece part 1031 and the bottom plate 104 is an obtuse angle; the included angle between the first piece part 1031 and the second piece part 1032 is 10°-30°. The depth of the channel structure is greater than 1mm. The channel structure design of the elastic connecting piece 103 meets the requirements of the stamping process, and achieves a relatively good level of elasticity.

[0045] In an embodiment, as shown in Figure 3 and Figure 4 , the first piece 1031 and the second piece 1032 are connected by an arc-shaped connecting part 1033. The arc-shaped connecting part 1033 is, for example, a circular arc.

[0046] In an embodiment, as shown in Figure 3 and Figure 4 , the outer side plate 101 is provided as an elastic plate. The thickness of the outer side plate 101 can be 0.2mm-0.5mm, so that the outer side plate 101 forms a thin-walled structure. Both the outer side plate 101 and the elastic connecting part 103 can be elastically deformed, so that the outer side plate 101 can be more easily deformed inwardly when interference press-fitting, further effectively avoiding press-fitting defects such as biting out "aluminum chips".

[0047] In an embodiment, as shown in Figure 3 and Figure 4 , the skeleton 1 is a frame body formed by one-piece stamping, that is, the skeleton 1 is formed by one-piece stamping.

[0048] In an embodiment, as shown in Figure 3 and Figure 4 , the wall thickness of the skeleton 1 as a whole can be 0.2mm-0.5mm, so that the skeleton 1 forms a thin-walled structure.

[0049] In an embodiment, as shown in Figure 3 and Figure 4 , the skeleton 1 is a stainless steel frame body. The application adopts a non-aluminum alloy material, for example, a stainless steel material for stamping the skeleton 1. By changing the material of the skeleton 1, the application optimizes the press-fitting problem, reduces the probability of press-fitting failure of the customer, improves the "cold welding" and "aluminum chip" problems, improves the production efficiency, and reduces the product cost.

[0050] In an embodiment, as shown in Figure 3 and Figure 4 , the surface of the skeleton 1 is plated with a soldering metal. The conductive part 2 can be welded on the bottom plate 104. The application performs surface treatment in order to improve the weldability of the stamped skeleton 1 and the fixator 201. A layer of soldering metal such as nickel, tin, silver, copper, gold, etc. can be plated on the surface of the skeleton 1. The application simplifies the production process by soldering, including but not limited to reflow soldering, wave soldering, and manual soldering, to weld the conductive part 2 on the skeleton 1.

[0051] In an embodiment, as shown in Figure 3 and Figure 4As shown in the figures, the bottom plate 104 is provided with positioning recesses 102 for positioning the conductive member 2. For example, the conductive member 2 is fixed with a first positioning protrusion 203, which is inserted into the positioning recess 102. The positioning recess 102 includes a positioning slot and / or a positioning hole. When the channel structure is a U-shaped bend or a V-shaped bend, the vertical distance from the first sheet portion 1031 to the bottom edge is greater than the height by which the first positioning protrusion 203 exceeds the positioning recess 102, so that the first positioning protrusion 203 does not protrude from the framework 1.

[0052] In an embodiment, as shown in the figures, Figure 3 and Figure 4 the inner edge of the bottom plate 104 is used to cooperate with the positioning slot and / or the positioning hole to assist in positioning the conductive member 2. The conductive member 2 is further provided with a second positioning protrusion 204, and the side wall of the second positioning protrusion 204 abuts against the inner edge of the bottom plate 104. The conductive member 2 is a fiber fixing assembly, which includes a fixer 201 and a fiber bundle 202. One end of the fiber bundle 202 is fixed in the fixer 201, and the other end of the fiber bundle 202 is exposed from the fixer 201. The first positioning protrusion 203 and the first positioning recess 102 are respectively arranged around the fixer 201. The fixer 201 is welded on the bottom plate 104. The fiber bundle 202 is a conductive fiber, which is inserted into the fixer 201 and is riveted to fix the wire fiber, forming the fiber fixing assembly.

[0053] In an embodiment, as shown in the figures, Figure 3 and Figure 4 the positioning slots and / or the positioning holes are circumferentially distributed on the bottom plate 104. The bottom plate 104 is arranged in a ring shape, and the outer side plate 101 extends in a direction perpendicular to the bottom plate 104, and the outer side plate 101 is arranged in a ring shape around the outer edge of the bottom plate 104. For example, the bottom plate 104 is in a circular ring shape, and is formed as a conductive ring of the framework 1. The framework 1 is formed by a stamping process, and the outer diameter circular surface is formed. The fiber fixing assembly can be placed one by one in the distributed positioning recesses 102 of the framework 1 by using an SMT patch equipment. The positioning recess 102 is used to provide auxiliary positioning for the fiber fixing assembly during patching. The U-shaped bend is used to absorb the deformation of the outer diameter from the center when the conductive ring is assembled with interference.

[0054] In an embodiment, as shown in the figures, Figure 1 and Figure 2 the conductive device further includes a ring-shaped cover plate, and the cover plate is located on the side of the conductive member 2 away from the bottom plate 104. Two positioning holes on the bottom plate 104 facilitate positioning with a tooling jig.

[0055] The present specification also provides a simple conductive ring, as shown in the figures, Figure 3 and Figure 4 which includes the framework 1 of any of the above embodiments and at least one conductive member 2. As shown in the figures, Figure 5 , Figure 3 andFigure 4 As shown in the figure, the skeleton 1 includes a bottom plate 104 and an outer side plate 101, and the outer side plate 101 is fixed at the outer edge of the bottom plate 104, and the conductive part 2 has a fixed surface which is fixedly attached to the plate surface of the bottom plate 101, and the conductive part 2 is installed on the bottom plate 104, and the conductive part 2 is arranged to protrude from the inner edge of the bottom plate 104.

[0056] In an embodiment, the fixed surface and the plate surface of the bottom plate 104 are fixedly attached by welding and / or bonding. For example, the bonding is, for example, gluing.

[0057] In an embodiment, as shown in the figure, ​ and ​ As shown in the figure, the skeleton 1 is arranged in a whole ring shape, the conductive part 2 is arranged in a plurality, and the plurality of conductive parts 2 are distributed around the ring core of the bottom plate 104 on the bottom plate 104.

[0058] In an embodiment, the conductive device further includes a ring-shaped cover plate, and the cover plate is located on the side of the conductive part 2 away from the bottom plate 104.

[0059] The conductive ring of the present application can also be used in the technical field of servo motors, high-power white household appliances, generators and large special mechanical equipment. The forming process of the present application innovatively adopts a stamping skeleton 1 type conductive ring support; the fiber fixing assembly is welded on the skeleton 1 by welding. The thin-walled skeleton 1 and the U-shaped bend design allow the conductive ring to deform inwardly when it is over-pressed, which can effectively avoid the over-pressed "aluminum chips" and improve the quality stability of the product.

[0060] The present application simplifies the structure design of the conductive ring product, simplifies the production process, reduces the cost, and improves the production efficiency; reduces the design difficulty and one-time investment of the automatic production line.

[0061] In this specification, the same and similar parts among various embodiments are referred to each other, and each embodiment focuses on the difference from other embodiments. Especially, for the embodiments described later, the description is relatively simple, and the relevant part can refer to the part of the foregoing embodiment.

[0062] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A skeleton for an electrically conductive device, characterized by, The bottom plate is used for mounting the conductive member, and the elastic connecting member is fixedly connected between the outer edge of the bottom plate and the outer side plate to make the outer side plate in the pressed state flexibly connected to the bottom plate through the elastic deformation of the elastic connecting member.

2. The skeleton for an electroconductive device according to claim 1, wherein The elastic connecting member comprises a first piece and a second piece connected at an included angle to form a channel structure between the bottom plate and the outer side plate, which produces elastic deformation through the change of the included angle.

3. The skeleton for a conductive device according to claim 2, wherein The included angle between the first piece and the second piece is an acute angle.

4. The skeleton for a conductive device according to claim 3, wherein The first piece is connected to the bottom plate, and the second piece is connected to the bottom of the outer side plate, and the second piece is formed on the same plate surface as the outer side plate; the included angle between the first piece and the bottom plate is an obtuse angle; and the included angle between the first piece and the second piece is 10-30 degrees.

5. The skeleton for a conductive device according to claim 2, wherein The bottom plate and the outer side plate are both annular, and the outer side plate is arranged around the outer edge of the bottom plate so that the channel structure is annularly arranged.

6. The skeleton for a conductive device according to claim 2, wherein The first piece and the second piece are transitionally connected through an arc-shaped connecting part.

7. The skeleton for an electroconductive device according to any one of claims 1 to 6, wherein The outer side plate is arranged as an elastic plate.

8. The skeleton for an electroconductive device according to any one of claims 1 to 6, wherein The skeleton is an integrated stamping frame.

9. The skeleton for an electroconductive device according to claim 8, wherein The skeleton is a stainless steel frame. The thickness of the skeleton is 0.2-0.5 mm to make the skeleton form a thin-walled structure. The surface of the skeleton is electroplated with a soldering-assisted metal for facilitating soldering.

10. The skeleton for an electroconductive device according to any one of claims 1 to 6, wherein The bottom plate is provided with a positioning groove and / or a positioning hole for positioning the conductive member.

11. The skeleton for an electroconductive device according to claim 10, wherein The inner edge of the bottom plate is used for assisting in positioning the conductive member through the positioning groove and / or the positioning hole. The skeleton is annular as a whole, and the positioning groove and / or the positioning hole are circumferentially distributed on the bottom plate.

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