IPM locking device and permanent magnet motor

Abstract

This utility model belongs to the field of IPM module locking and installation technology, and particularly relates to an IPM locking device and a permanent magnet motor. The IPM locking device includes: a mounting base and an IPM module body, wherein the IPM module body is disposed on the top surface of the mounting base; wherein the top surface of the mounting base has insertion holes corresponding to the pins in the IPM module body; the inner wall of the insertion hole is inclined, and the cross-sectional area of ​​the insertion hole gradually decreases from the top surface of the mounting base to the bottom surface, and the minimum cross-sectional area is adapted to the thickness of the pin, so that when the IPM module body is pressed down and placed on the top surface of the mounting base, the pins are inserted into the corresponding insertion holes through the inclined surface, thereby realizing that when installing the IPM module body, the pins are guided and aligned by the inclined surface of the insertion hole, eliminating the need for manual alignment and avoiding bending or breakage of the pins.

Description

Technical Field

[0001] This utility model belongs to the field of IPM module locking and installation technology, and particularly relates to an IPM locking device and a permanent magnet motor. Background Technology

[0002] During the assembly of permanent magnet motors, it is necessary to lock and install the IPM module (Intelligent Power Module). When installing traditional IPM modules, operators need to manually and accurately align the module pins with the sockets, which is time-consuming. Furthermore, if the alignment is off, forcibly inserting the module can cause the pins to bend or break, affecting the reliability of the electrical connection.

[0003] Therefore, if the pins of the IPM module are misaligned with the sockets during installation, the pins may be bent or broken, affecting the reliability of the electrical connection. Thus, it is necessary to design an IPM locking device and a permanent magnet motor.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0005] This disclosure provides at least one IPM locking device and a permanent magnet motor.

[0006] In a first aspect, embodiments of this disclosure provide an IPM locking device, comprising: Mounting base, and The IPM module body is disposed on the top surface of the mounting base; wherein, the top surface of the mounting base has insertion holes corresponding to the pins in the IPM module body; the inner wall of the insertion hole is inclined, and the cross-sectional area of ​​the insertion hole gradually decreases from the top surface of the mounting base to the bottom surface, and the minimum cross-sectional area is adapted to the thickness of the pin, so that when the IPM module body is pressed down and placed on the top surface of the mounting base, the pins are inserted into the corresponding insertion holes through the inclined surface.

[0007] In one optional embodiment, the top surface of the mounting base is provided with two sets of limiting components, which are arranged opposite to each other. The limiting components are configured to contact the top surface of the IPM module body after the IPM module body is pressed down and placed on the top surface of the mounting base, so as to press the IPM module body tightly.

[0008] In one optional embodiment, the limiting component includes: a limiting sleeve vertically disposed on the top surface of the mounting base; An elastic slide rod is slidably disposed inside the limiting sleeve, and the top end of the elastic slide rod extends out of the top surface of the limiting sleeve; A spring is connected between the bottom end of the elastic slide rod and the inner bottom surface of the limiting sleeve; The top of the elastic slide bar is connected to a limiting block, which extends out of the side wall of the elastic slide bar so that the shortest distance between the corresponding limiting blocks in the two sets of limiting components is less than the length of the IPM module body.

[0009] In one optional embodiment, the top surface of the limiting block is an inclined surface, and an installation groove is provided on the inclined surface, in which a roller is rotatably disposed; The roller extends from the mounting slot.

[0010] In one optional embodiment, when the IPM module body is pressed down, it contacts the roller and squeezes the elastic slide bar to tilt, compressing the spring. After the IPM module body is installed on the top surface of the base, the spring returns to its original position, causing the bottom surface of the limit block extending out of the elastic slide bar to contact the top surface of the IPM module body, thereby pressing the IPM module body.

[0011] In one optional embodiment, a plurality of mounting plates are provided on the side wall of the mounting base, and mounting holes are provided on the mounting plates, with screws installed in the mounting holes.

[0012] Secondly, embodiments of this disclosure also provide a permanent magnet motor, comprising: The motor body, and the IPM locking device installed on the motor body; The IPM locking device is suitable for pressing the IPM module body using the aforementioned IPM locking device.

[0013] In one alternative embodiment, the pins in the IPM module body locked in the IPM locking device are electrically connected to the motor body.

[0014] In one alternative embodiment, the mounting base in the IPM locking device is mounted on the motor body by screws.

[0015] In one optional embodiment, the top surface of the mounting base has a socket corresponding to the pins in the IPM module body. The inner wall of the socket is inclined, and the cross-sectional area of ​​the socket gradually decreases from the top surface of the mounting base to the bottom surface, so that when the IPM module body is pressed down and placed on the top surface of the mounting base, the pins are guided into the corresponding sockets by the inclined surface.

[0016] The beneficial effects of this utility model are as follows: This IPM locking device includes a mounting base and an IPM module body, wherein the IPM module body is disposed on the top surface of the mounting base; wherein, the top surface of the mounting base has a socket corresponding to the pins in the IPM module body; the inner wall of the socket is inclined, and the cross-sectional area of ​​the socket gradually decreases from the top surface of the mounting base to the bottom surface, and the smallest cross-sectional area is adapted to the thickness of the pin, so that when the IPM module body is pressed down and placed on the top surface of the mounting base, the pins are inserted into the corresponding sockets through the inclined surface, thereby realizing that when the IPM module body is installed, the pins are guided and aligned by the inclined surface of the socket, eliminating the need for manual alignment and avoiding bending or breakage of the pins.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an IPM locking device provided in an embodiment of the present disclosure; Figure 2 An exploded view of an IPM locking device provided in an embodiment of this disclosure; Figure 3 An exploded view of a limiting component provided in an embodiment of this disclosure; Figure 4 An enlarged view of a socket provided for an embodiment of this disclosure.

[0021] In the picture: 1. Mounting base, 11. Socket, 12. Mounting plate, 13. Mounting hole, 14. Screw; 2IPM module body, 21 pins; 3 Limiting component, 31 Limiting sleeve, 32 Elastic slide bar, 33 Spring, 34 Limiting block, 35 Mounting groove, 36 Roller. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0024] During the assembly of permanent magnet motors, it is necessary to lock and install the IPM module (Intelligent Power Module). Traditional IPM module installation requires operators to manually and precisely align the module pins with the sockets, which is time-consuming. Furthermore, if the alignment is off, forced insertion can cause the pins to bend or break, affecting the reliability of the electrical connection. In addition, the locking of the IPM module in related technologies (such as screw fixing or clip locking) requires step-by-step operations (such as tightening screws and adjusting the clip position), and cannot be completed with a single pressing action, resulting in low assembly efficiency and failing to meet the high-efficiency requirements of automated production lines.

[0025] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0028] like Figure 1 and Figure 4 As shown, at least one disclosed embodiment provides an IPM locking device, including: a mounting base 1 and an IPM module body 2, wherein the IPM module body 2 is disposed on the top surface of the mounting base 1; wherein, the top surface of the mounting base 1 has a socket 11 corresponding to the pin 21 in the IPM module body 2; the inner wall of the socket 11 is inclined, and the cross-sectional area of ​​the socket 11 gradually decreases from the top surface of the mounting base 1 to the bottom surface, and the smallest cross-sectional area is adapted to the thickness of the pin 21, so that when the IPM module body 2 is pressed down and placed on the top surface of the mounting base 1, the pin 21 is inserted into the corresponding socket 11 through the inclined surface, thereby realizing that when the IPM module body 2 is installed, the pin 21 is guided and aligned by the inclined surface of the socket 11, without the need for manual alignment, and avoiding bending or breakage of the pin 21.

[0029] In this embodiment, the cross-sectional area at which the pin is smallest is matched with the thickness of the pin 21, that is, the pin 21 can avoid shaking or shifting after passing through the cross-sectional area at which the pin 21 is smallest in the socket 11.

[0030] In this embodiment, the area of ​​the side with the larger cross-sectional area of ​​the socket 11 is greater than the cross-sectional area of ​​the pin 21. When the IPM module body 2 is pressed down for installation, the pin 21 can be smoothly inserted into the socket 11 and contact the inclined surface. During the pressing down process of the IPM module body 2, the pin passes through the socket 11 through the inclined surface and automatically slides into the socket 11 under the combined action of the gravity of the IPM module body 2 and the guidance of the inclined surface, so that the pin 21 is aligned without manual alignment, thus avoiding bending or breakage of the pin 21.

[0031] like Figure 2 As shown, in one optional embodiment, the top surface of the mounting base 1 is provided with two sets of limiting components 3, which are arranged opposite to each other. The limiting components 3 are configured to contact the top surface of the IPM module body 2 after being pressed down and placed on the top surface of the mounting base 1, so as to press the IPM module body 2 tightly.

[0032] In this embodiment, the two sets of limiting components 3 can press and lock the IPM module body 2 from both sides of the top surface of the IPM module body 2 to prevent the IPM module body 2 from moving after installation.

[0033] like Figure 3As shown, in one optional embodiment, the limiting component 3 includes: a limiting sleeve 31 vertically disposed on the top surface of the mounting base 1; an elastic slide rod 32 slidably disposed inside the limiting sleeve 31, the top end of the elastic slide rod 32 extending out of the top surface of the limiting sleeve 31; a spring 33 connecting the bottom end of the elastic slide rod 32 and the inner bottom surface of the limiting sleeve 31; and a limiting block 34 connected to the top end of the elastic slide rod 32, the limiting block 34 extending out of the side wall of the elastic slide rod 32, so that the shortest distance between the corresponding limiting blocks 34 in the two sets of limiting components 3 is less than the length of the IPM module body 2.

[0034] In this embodiment, the elastic slide bar 32 can tilt when pressed, increasing the distance between the two corresponding limit blocks 34 in the two sets of limit components 3. This allows the IPM module body 2 to be pressed down and pass over the limit blocks 34 during installation. After the IPM module body 2 is installed in place, the spring 33 and the elastic slide bar 32 reset, causing the bottom surface of the limit block 34 extending out of the elastic slide bar 32 to contact the top surface of the IPM module body 2, thereby pressing the IPM module body 2 and locking it.

[0035] like Figure 3 As shown, in one optional embodiment, the top surface of the limiting block 34 is an inclined surface, and an installation groove 35 is provided on the inclined surface. A roller 36 is rotatably disposed in the installation groove 35; the roller 36 extends out from the installation groove 35.

[0036] In this embodiment, the inclined surface of the limiting block 34 can serve as a guide when the IPM module body 2 is pressed down.

[0037] In this embodiment, the roller 36 can reduce the frictional resistance between the IPM module body 2 and the inclined surface of the limiting block 34 when the IPM module body 2 is pressed down by rotating, so as to ensure the smoothness of the tilting action of the elastic slide bar 32 and avoid scratches on the surface of the IPM module body 2.

[0038] In this embodiment, the inclined surface of the limiting block 34 and the roller 36 are squeezed when the IPM module body 2 is pressed down, driving the elastic slide bar 32 to tilt outward and compress the spring 33. At this time, the spring 33 stores energy. When the IPM module body 2 is fully pressed down to the corresponding position on the mounting base 1, the spring 33 releases the stored energy, pushes the elastic slide bar 32 to reset, and the limiting block 34 clamps the edge of the IPM module body 2 under the dual action of the tension of the spring 33 and the rigid support of the elastic slide bar 32, forming a stable mechanical lock.

[0039] In this embodiment, during the collaborative process of the various structures, the inclined surface of the socket 11 enables the self-positioning of the pin 21, the deformation-reset mechanism of the elastic slide bar 32 and the spring 33 achieves dynamic locking, and the roller 36 reduces frictional resistance. The three work together to complete the integrated operation of "pressing → guiding → deformation → locking", ultimately achieving non-destructive and rapid installation of the IPM module body 2. In one optional embodiment, when the IPM module body 2 is pressed down, it contacts the roller 36 and squeezes the elastic slide bar 32 to tilt, compressing the spring 33. After the IPM module body 2 is installed on the top surface of the base, the spring 33 resets, causing the bottom surface of the limiting block 34 extending out of the elastic slide bar 32 to contact the top surface of the IPM module body 2, thereby pressing the IPM module body 2.

[0040] In this embodiment, the rapid installation and reliable locking of the IPM power module are achieved through the coordinated operation of the various structures in the limiting component 3.

[0041] like Figure 1 As shown, in one optional embodiment, a plurality of mounting plates 12 are provided on the side wall of the mounting base 1, and mounting holes 13 are provided on the mounting plates 12. Screws 14 are provided in the mounting holes 13 to facilitate the mounting base 1 to be installed on the housing of the motor body by means of the screws 14, forming a rigid support base.

[0042] In this embodiment, the IPM module body 2 can be pressed down and installed on the top surface of the mounting base 1, or a corresponding groove can be opened on the top surface of the mounting base 1, and the IPM module body 2 can be installed in the groove, etc.

[0043] At least one other disclosed embodiment also provides a permanent magnet motor, including: a motor body, and an IPM locking device disposed on the motor body; the IPM locking device is adapted to press the IPM module body 2 with the above-described IPM locking device.

[0044] In one alternative embodiment, pin 21 of the IPM module body 2 locked in the IPM locking device is electrically connected to the motor body.

[0045] In one alternative embodiment, the mounting base 1 in the IPM locking device is mounted on the motor body by screws 14.

[0046] In one optional embodiment, the top surface of the mounting base 1 is provided with a socket 11 corresponding to the pin 21 in the IPM module body 2. The inner wall of the socket 11 is inclined, and the cross-sectional area of ​​the socket 11 gradually decreases from the top surface to the bottom surface of the mounting base 1, so that when the IPM module body 2 is pressed down and placed on the top surface of the mounting base 1, the pin 21 is guided into the corresponding socket 11 by the inclined surface.

[0047] In summary, this IPM locking device includes: a mounting base 1 and an IPM module body 2, wherein the IPM module body 2 is disposed on the top surface of the mounting base 1; wherein, the top surface of the mounting base 1 has a socket 11 corresponding to the pin 21 in the IPM module body 2; the inner wall of the socket 11 is inclined, and the cross-sectional area of ​​the socket 11 gradually decreases from the top surface of the mounting base 1 to the bottom surface, and the point with the smallest cross-sectional area is adapted to the pin 21, so that when the IPM module body 2 is pressed down and placed on the top surface of the mounting base 1, the pin 21 is inserted into the corresponding socket 11 through the inclined surface, thereby realizing that when the IPM module body 2 is installed, the pin 21 is guided and aligned by the inclined surface of the socket 11, without the need for manual alignment, and avoiding bending or breakage of the pin 21.

[0048] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0050] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0051] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An IPM locking device, characterized in that, include: Mounting bracket (1), and IPM module body (2), the IPM module body (2) is disposed on the top surface of the mounting base (1); The mounting base (1) has a socket (11) on its top surface that corresponds to the pin (21) in the IPM module body (2). The inner wall of the socket (11) is a slope. The cross-sectional area of ​​the socket (11) gradually decreases from the top surface of the mounting base (1) to the bottom surface. The smallest cross-sectional area is matched with the thickness of the pin (21) so that when the IPM module body (2) is pressed down and placed on the top surface of the mounting base (1), the pin (21) is inserted into the corresponding socket (11) through the slope.

2. The IPM locking device as described in claim 1, characterized in that, The top surface of the mounting base (1) is provided with two sets of limiting components (3), which are arranged opposite to each other. The limiting components (3) are configured to contact the top surface of the IPM module body (2) after the IPM module body (2) is pressed down and placed on the top surface of the mounting base (1) to press the IPM module body (2).

3. The IPM locking device as described in claim 2, characterized in that, The limiting component (3) includes: a limiting sleeve (31) vertically disposed on the top surface of the mounting base (1); An elastic slide rod (32) is slidably disposed inside the limiting sleeve (31), and the top end of the elastic slide rod (32) extends out of the top surface of the limiting sleeve (31); A spring (33) is connected between the bottom end of the elastic slide bar (32) and the inner bottom surface of the limiting sleeve (31). The top end of the elastic slide bar (32) is connected to a limiting block (34), which extends out of the side wall of the elastic slide bar (32) so that the shortest distance between the corresponding limiting blocks (34) in the two sets of limiting components (3) is less than the length of the IPM module body (2).

4. The IPM locking device as described in claim 3, characterized in that, The top surface of the limiting block (34) is an inclined surface, and an installation groove (35) is provided on the inclined surface. A roller (36) is rotatably arranged in the installation groove (35). The roller (36) extends from the mounting groove (35).

5. The IPM locking device as described in claim 4, characterized in that, When the IPM module body (2) is pressed down, it contacts the roller (36) and squeezes the elastic slide bar (32) to tilt, compressing the spring (33). After the IPM module body (2) is installed on the top surface of the base, the spring (33) resets so that the bottom surface of the limit block (34) extending out of the elastic slide bar (32) contacts the top surface of the IPM module body (2) to press the IPM module body (2) tightly.

6. The IPM locking device as described in claim 1, characterized in that, The mounting base (1) has several mounting plates (12) on its side wall. The mounting plates (12) have mounting holes (13) and screws (14) are installed in the mounting holes (13).

7. A permanent magnet electric machine characterized by, include: The motor body, and the IPM locking device installed on the motor body; The IPM locking device is adapted to press the IPM module body (2) with the IPM locking device as described in any one of claims 1-6.

8. The permanent magnet motor as described in claim 7, characterized in that, The pin (21) of the IPM module body (2) locked in the IPM locking device is electrically connected to the motor body.

9. The permanent magnet motor as described in claim 7, characterized in that, The mounting base (1) in the IPM locking device is mounted on the motor body by screws (14).

10. The permanent magnet motor as described in claim 9, characterized in that, The top surface of the mounting base (1) is provided with a socket (11) corresponding to the pin (21) in the IPM module body (2). The inner wall of the socket (11) is inclined. The cross-sectional area of ​​the socket (11) gradually decreases from the top surface to the bottom surface of the mounting base (1) so that when the IPM module body (2) is pressed down and placed on the top surface of the mounting base (1), the pin (21) is guided into the corresponding socket (11) by the inclined surface.

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