Fixing mechanism and controller assembly
By using the fixing mechanism of the base and flexible parts in the installation of the IGBT module, the problems of unstable installation of the IGBT module and loosening due to thermal expansion and contraction in the prior art are solved, and higher stability and service life are achieved.
Patent Information
- Application Number
- CN202421339649.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-12
AI Technical Summary
The installation method of existing IGBT modules is unstable, especially the problem of loosening due to thermal expansion and contraction during the operation of the module.
Using a fixing mechanism including a base member and a flexible member, the IGBT module is fixed to the controller housing, and the adaptive adjustment of the flexible member ensures stable clamping of the module during operation.
It improves the firmness of the IGBT module and the controller housing, avoids loosening problems caused by thermal expansion and contraction, extends the service life of the IGBT module, and simplifies the installation process.
Smart Images
Figure CN222736422U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of heaters, in particular to a fixing mechanism and a controller assembly. Background Art
[0002] Most of the heaters in existing vehicle air conditioners generate heat through ceramic heaters at a set voltage, and then transfer the heat to the vehicle system coolant. The coolant passes through the heater of a traditional air-conditioning box so that the air conditioning blows out the heat of the coolant to heat the passenger compartment or other locations.
[0003] The heater includes an IGBT module (Insulated Gate Bipolar Transistor), which is a switch electrical component that can control the power on and off of the heater. The existing IGBT installation is directly fixed by bolts, and the existing IGBT module installation method has the problem of unstable installation. Utility Model Content
[0004] The utility model aims to provide a fixing mechanism and a controller assembly, which can improve the firmness of the cooperation between the IGBT module and the controller housing, and the IGBT module is not easy to loosen when thermal expansion and contraction occur during its operation.
[0005] The embodiment of the utility model is achieved as follows:
[0006] In a first aspect, the utility model provides a fixing mechanism for fixing an IGBT module on a controller housing, comprising:
[0007] A base member and a flexible member, wherein the base member is used for being fixedly connected to the controller housing; the flexible member is installed on the base member, and the flexible member is used for pressing the IGBT module against the controller housing in cooperation with the base member and the controller housing.
[0008] In an optional embodiment, a first concave-convex portion is provided on the base member, and a second concave-convex portion is provided on the flexible member, and the first concave-convex portion and the second concave-convex portion are snap-fitted.
[0009] Based on the above scheme, when the base member and the flexible member are connected, the first concave-convex portion and the second concave-convex portion are snap-fitted together to improve the firmness of the combination of the base member and the flexible member, and the position of the flexible member relative to the base member is stable and reliable, thereby facilitating the effective positioning of the IGBT module through the flexible member.
[0010] In an optional embodiment, a positioning groove is provided on the base member, the first concave-convex portion is provided as a positioning protrusion, and the positioning protrusion is provided on the bottom wall of the positioning groove; the second concave-convex portion is provided as a positioning hole, the flexible member is inserted into the positioning groove, and the positioning protrusion is inserted into the positioning hole.
[0011] Based on the above solution, the first concavoconvex part and the second concavoconvex part have simple structures, the matching mode is firm and reliable, and the assembly is convenient. At the same time, the flexible part is inserted into the positioning groove on the base part, which further improves the firmness of the matching between the flexible part and the base part.
[0012] In an optional embodiment, the positioning hole is configured as a through hole.
[0013] Based on the above solution, a through hole is provided on the flexible part, which not only meets the requirements of positioning by plugging with the protrusion, but also reduces the consumables of the flexible part, reduces the weight of the flexible part, and reduces the processing and manufacturing cost. At the same time, due to the design of the through hole, the area of the end of the flexible part that contacts the IGBT module is reduced, and the shielding area of the IGBT module is small, which is conducive to the heat dissipation of the IGBT module.
[0014] In an optional embodiment, the base member includes a skeleton and a jacket wrapping the skeleton, the hardness of the skeleton is greater than the hardness of the jacket; and the flexible member is mounted on the jacket.
[0015] Based on the above solution, the structural strength of the base member is increased by the skeleton, so that the base member is not easily deformed during use, and the base member can provide a stable supporting force, thereby firmly pressing the IGBT module onto the controller housing through the flexible member.
[0016] In an optional embodiment, the fixing mechanism further includes a fastener, the fastener is connected to the base member, and the fastener is used to be fixedly connected to the controller housing.
[0017] Based on the above solution, during assembly, the base member is locked on the controller housing by fasteners, which is convenient and quick to operate, and convenient and quick to disassemble, which is conducive to subsequent inspection or maintenance operations.
[0018] In an optional embodiment, a fixing hole is provided on the base member, and the fastener is inserted into the fixing hole.
[0019] Based on the above scheme, the position of the fastener is positioned by the fixing hole, which can improve the firmness of the fastener and the base member, and facilitate the fastener and the base member to be matched during assembly, thereby reducing the difficulty of operation, reducing the assembly cost, and improving the assembly efficiency.
[0020] In an optional embodiment, the fixing hole is configured as a countersunk hole, one end of the fastener is used to be connected to the controller housing, and the other end of the fastener is embedded in the countersunk hole.
[0021] Based on the above scheme, after the fastener locks the base component on the controller housing, the end of the fastener is embedded in the countersunk hole, and the end of the fastener away from the controller housing does not protrude from the base component. In this way, the end of the fastener away from the controller housing occupies a small space and is not easy to interfere with other components in the controller housing.
[0022] In an optional embodiment, there are multiple flexible members, and all of the multiple flexible members are connected to the base member.
[0023] Based on the above solution, multiple flexible parts can contact the IGBT module, thereby improving the force balance of the IGBT module, making it less likely for the IGBT module to warp, and the installation quality of the IGBT module is high.
[0024] In a second aspect, the utility model provides a controller assembly, the controller assembly comprising:
[0025] An IGBT module, a controller housing and a fixing mechanism as described in any one of the aforementioned embodiments, wherein the base member is connected to the controller housing, and the flexible member and the controller housing cooperate to clamp the IGBT module.
[0026] The beneficial effects of the embodiments of the utility model are:
[0027] In summary, the fixing mechanism provided in this embodiment can cooperate with the controller housing to fix the IGBT module at a set position on the controller housing, wherein the fixing mechanism includes a base member and a flexible member. During operation, the base member is fixedly connected to the controller housing, and the flexible member abuts against the side of the IGBT module away from the controller housing, that is, the base member provides a locking force, and the IGBT module is clamped by the flexible member and the controller housing. Since the flexible member has a certain flexibility and is in flexible contact with the IGBT module, it is not easy to damage the IGBT module when it is pressed on the IGBT module, thereby improving the safety during the assembly process. In addition, since the IGBT module will expand and contract when heated or cooled during operation, the flexible member itself can adaptively adjust the pressing force, which can ensure that the IGBT module can also be subjected to a good clamping force during operation, thereby improving the stability of the position of the IGBT module. In addition, the flexible member and the controller housing cooperate to clamp the IGBT module, and there is no need to open a hole on the IGBT module, thereby reducing damage to the IGBT module and extending the service life of the IGBT module. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0029] Figure 1 A schematic diagram of a fixing mechanism of an embodiment of the utility model from one perspective;
[0030] Figure 2 A schematic diagram of a fixing mechanism of an embodiment of the utility model from another perspective;
[0031] Figure 3 It is a cross-sectional schematic diagram of a fixing mechanism of an embodiment of the utility model;
[0032] Figure 4 It is a partial schematic diagram of a controller assembly according to an embodiment of the present utility model.
[0033] icon:
[0034] 100-base member; 101-fixing hole; 1011-first hole section; 1012-second hole section; 102-positioning groove; 103-first concave-convex portion; 110-skeleton; 120-jacket; 200-flexible member; 210-second concave-convex portion; 300-fastener; 001-IGBT module; 002-controller housing; 021-boss. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0038] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0039] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0041] In the prior art, when the IGBT module 001 of the heater is installed with the controller housing 002, a hole is generally opened on the IGBT module 001, and then structural parts such as screws are inserted into the hole, and the screws are fixed to the controller housing 002. In this way, a fixed connection between the IGBT module 001 and the controller housing 002 is achieved. This installation method requires destroying the IGBT module 001, which is cumbersome to process. In addition, the locking force between the IGBT module 001 and the controller housing 002 cannot be adaptively adjusted, which makes it inconvenient to adjust the tightness of the installation.
[0042] Please combine Figure 1-Figure 3 In view of this, the designer provides a fixing mechanism that does not require opening holes in the IGBT module 001, reduces the processing steps, and saves processing costs. Moreover, the fixing mechanism can adaptively adjust the tightness to improve the stability of the IGBT module 001.
[0043] In this embodiment, it should be noted that the fixing mechanism can be used to fix the IGBT module 001. Obviously, it can also be used to fix other components according to actual conditions, which is not exhaustively listed in this embodiment.
[0044] In this embodiment, the fixing mechanism includes a base member 100 and a flexible member 200. The base member 100 is used to be fixedly connected to the controller housing 002; the flexible member 200 is installed on the base member 100, and the flexible member 200 is used to press the IGBT module 001 against the controller housing 002 under the cooperation of the base member 100 and the controller housing 002.
[0045] Based on the above solution, the fixing mechanism provided in this embodiment is used as follows:
[0046] During assembly, the base member 100 is fixedly connected to the controller housing 002, and the flexible member 200 abuts against the side of the IGBT module 001 away from the controller housing 002, that is, the base member 100 provides a locking force, and the IGBT module 001 is clamped by the flexible member 200 and the controller housing 002. Since the flexible member 200 has a certain degree of flexibility and is in flexible contact with the IGBT module 001, it is not easy to damage the IGBT module when it is pressed on the IGBT module 001, thereby improving the safety during the assembly process. In addition, since the IGBT module 001 will expand and contract when heated or cooled during operation, the flexible member 200 itself can adaptively adjust the pressing force, which can ensure that the IGBT module 001 can also receive a good clamping force during operation, thereby improving the stability of the position of the IGBT module 001. Furthermore, the flexible member 200 and the controller housing 002 cooperate to clamp the IGBT module 001 , and there is no need to open a hole on the IGBT module 001 , thereby reducing damage to the IGBT module 001 and extending the service life of the IGBT module 001 .
[0047] The details of the fixing mechanism provided in the embodiment of the present application are described below by way of examples.
[0048] Please combine Figure 1-Figure 4 In this embodiment, optionally, the fixing mechanism includes a base member 100, two flexible members 200 and two fasteners 300. The base member 100 can be fixed on the controller housing 002 by the two fasteners 300, the two flexible members 200 are both matched with the base member 100, the two flexible members 200 are both used to abut against the IGBT module 001, and the two flexible members 200 are simultaneously matched with the controller housing 002 to clamp the IGBT module 001.
[0049] In this embodiment, optionally, the base member 100 is configured as a long strip plate-like structure, and the base member 100 includes a frame 110 and a jacket 120 wrapped outside the frame 110, and the hardness of the frame 110 is greater than the hardness of the jacket 120. The frame 110 can be configured as a metal plate, and the jacket 120 can be configured as a plastic part. The jacket 120 can be wrapped outside the frame 110 by injection molding or the like. Through the structural design of the frame 110, the structural strength of the base member 100 can be improved.
[0050] Further, two fixing holes 101 are arranged on the base member 100, and the two fixing holes 101 are arranged at intervals in the length direction of the base member 100. Both fixing holes 101 can be set as round holes, and both fixing holes 101 are set through the outer sleeve 120 and the frame 110. Further, the fixing hole 101 is set as a countersunk hole, that is, the fixing hole 101 is set as a two-stage hole structure, and the fixing hole 101 includes a coaxial and connected first hole section 1011 and a second hole section 1012, the end of the first hole section 1011 extends to one side of the frame 110, the second hole section 1012 penetrates the outer sleeve 120 and the frame 110 at the same time, and the port of the second hole section 1012 located on the frame 110 is connected to the first hole section 1011, and the diameter of the first hole section 1011 is greater than the diameter of the second hole section 1012. During assembly, the fastener 300 penetrates the fixing hole 101 from the first hole section 1011, extends out of the second hole section 1012, and is connected to the controller housing 002. Furthermore, part of the fastener 300 is located in the first hole section 1011 , and the fastener 300 locks the base member 100 on the controller housing 002 through the skeleton 110 .
[0051] It should be understood that the fastener 300 can be set as a screw, and the fastener 300 and the controller housing 002 can be screwed and fixed, which is easy to operate. In addition, after the fastener 300 locks the base member 100 on the controller housing 002, the end cap of the screw is embedded in the first hole section 1011 and is not exposed, which occupies a small space.
[0052] It should be understood that two fixing holes 101 are provided on the base member 100, and two fasteners 300 are respectively inserted into the two fixing holes 101. The base member 100 is locked on the controller housing 002 by the cooperation of the two fasteners 300, and the locking effect is good.
[0053] Furthermore, two positioning grooves 102 are provided on the side of the outer sleeve 120 away from the first hole section 1011, each positioning groove 102 is a circular groove, and a first convex-concave portion 103 is provided on the bottom wall of each positioning groove 102. The first convex-concave portion 103 can be a cylindrical positioning protrusion, and the positioning protrusion is coaxially arranged with the positioning groove 102.
[0054] In this embodiment, optionally, the flexible member 200 is set to a cylindrical structure, and a second concave-convex portion 210 is provided on the flexible member 200. The second concave-convex portion 210 can be set to a positioning hole, and the positioning hole can be a circular through hole. The axis of the positioning hole is coaxially arranged with the axis of the flexible member 200. During assembly, the flexible member 200 is inserted into the positioning groove 102, and the positioning hole on the flexible member 200 is snap-fitted with the positioning protrusion in the positioning groove 102. Part of the flexible member 200 protrudes from the notch of the positioning groove 102, and the positioning protrusion has a spacing with the end face of the flexible member 200 away from the positioning groove 102. In this way, the positioning protrusion is not easy to interfere with the part of the flexible member 200 exposed outside the positioning groove 102, and is not easy to affect the deformation of the part of the flexible member 200 exposed outside the positioning groove 102.
[0055] It should be understood that the flexible member 200 may be configured as a rubber member or the like.
[0056] In other embodiments, the base member 100 may be configured as a metal plate or a plastic plate, etc., as long as it can provide a stable supporting force.
[0057] It should be understood that in other embodiments, the base member 100 and the flexible member 200 may also be provided as an integral structure.
[0058] The fixing mechanism provided in this embodiment locks the base member 100 on the controller housing 002 through the cooperation of two fasteners 300, so that the two flexible members 200 abut against the IGBT module 001. Since the flexible member 200 has a certain deformation ability, the flexible member 200 can adapt to processing or assembly errors and can adaptively adjust the clamping force applied to the IGBT module 001. The two flexible members 200 can cooperate to provide a stable clamping force, so that the position of the IGBT module 001 relative to the controller housing 002 is stable and reliable.
[0059] This embodiment also provides a controller assembly, which includes an IGBT module, a controller housing 002 and a fixing mechanism. The base member 100 is connected to the controller housing 002 , and the flexible member 200 and the controller housing 002 cooperate to clamp the IGBT module 001 .
[0060] It should be understood that two bosses 021 can be provided on the controller housing 002, and the thickness of the controller housing 002 is relatively thick at the position of the bosses 021, and threaded holes can be provided on the bosses 021 to provide a locking position for the fastener 300. That is, after the fastener 300 is inserted into the base member 100, the fastener 300 can be screwed into the threaded hole on the boss 021, which is convenient for installation.
[0061] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A fixing mechanism for fixing an IGBT module on a controller housing (002), characterized in that: include: A base member (100) and a flexible member (200), wherein the base member (100) is used for being fixedly connected to the controller housing (002); the flexible member (200) is installed on the base member (100), and the flexible member (200) is used for pressing the IGBT module (001) against the controller housing (002) in cooperation with the base member (100) and the controller housing (002).
2. The fixing mechanism according to claim 1, characterized in that: The base member (100) is provided with a first concave-convex portion (103), and the flexible member (200) is provided with a second concave-convex portion (210), and the first concave-convex portion (103) and the second concave-convex portion (210) are snap-fitted.
3. The fixing mechanism according to claim 2, characterized in that: The base member (100) is provided with a positioning groove (102); the first concave-convex portion (103) is provided as a positioning protrusion, and the positioning protrusion is provided on the bottom wall of the positioning groove (102); the second concave-convex portion is provided as a positioning hole, the flexible member (200) is inserted into the positioning groove (102), and the positioning protrusion is inserted into the positioning hole.
4. The fixing mechanism according to claim 3, characterized in that: The positioning hole is configured as a through hole.
5. The fixing mechanism according to claim 1, characterized in that: The base member (100) comprises a frame (110) and a jacket (120) wrapping the frame (110), wherein the hardness of the frame (110) is greater than the hardness of the jacket (120); and the flexible member (200) is mounted on the jacket (120).
6. The fixing mechanism according to claim 1, characterized in that: The fixing mechanism further comprises a fastener (300), wherein the fastener (300) is connected to the base member (100), and the fastener (300) is used for being fixedly connected to the controller housing (002).
7. The fixing mechanism according to claim 6, characterized in that: The base member (100) is provided with a fixing hole (101), and the fastener (300) is inserted into the fixing hole (101).
8. The fixing mechanism according to claim 7, characterized in that: The fixing hole (101) is configured as a countersunk hole, one end of the fastener (300) is used to be connected to the controller housing (002), and the other end of the fastener (300) is embedded in the countersunk hole.
9. The fixing mechanism according to claim 1, characterized in that: There are multiple flexible members (200), and each of the multiple flexible members (200) is connected to the base member (100).
10. A controller assembly, characterized in that: The controller assembly comprises: An IGBT module, a controller housing (002) and a fixing mechanism as described in any one of claims 1 to 9, wherein the base member (100) is connected to the controller housing (002), and the flexible member (200) and the controller housing (002) cooperate to clamp the IGBT module (001).