Axial fixing device for stator chip assembly

Abstract

The utility model relates to the field of motors, in particular to an axial fixing device for a stator chip assembly, which comprises a casing, a stator chip assembly, a fixing device and an axial fixing device, and is characterized in that the stator chip assembly is mounted at the top of the casing; an axial fixing mechanism which is installed between the casing and the stator chip assembly and can fix the stator chip assembly; when a boss and a groove are clamped, the boss drives a pressing plate to extrude a hollow rod and a first sliding plate, when the first sliding plate is pressed to descend, the first sliding plate drives an air bag to descend, air in the air bag is injected into the hollow rod, and when the air enters the hollow rod, the air extrudes a second sliding plate and an inserting rod, so that the air bag is compressed. According to the utility model, through the arrangement of the boss, the insertion rod is inserted into the boss to lock the boss and the stator chip assembly, so that the stator chip assembly and the rib plate can be fastened, and the situation that the stator chip assembly and the rib plate are loosened to affect the installation stability is avoided.

Description

Technical Field

[0001] The utility model relates to the field of motors, and particularly to an axial fixing device for a stator chip assembly. Background Art

[0002] The main structure of a small air duct motor includes a stator chip assembly, a housing, a rotor assembly, a circuit board, etc.; the small air duct motor has a compact structure and usually a small outer diameter (such as 28 mm). Its stator assembly is cylindrical, and it is not convenient to fix axially or radially. The gap between the stator chip assembly and the housing is the air duct, and the larger the area of the air duct, the more beneficial it is for ventilation. In the prior art, the stator chip assembly and the housing of a small air duct motor are connected by riveting or screws, which is not only not conducive to processing, but also results in a small gap between the stator chip and the housing. Therefore, it is necessary to propose a new axial fixing structure for the stator chip assembly, which is not only convenient for connection, but also conducive to a large gap between the stator chip and the housing;

[0003] After retrieval, for example, an axial fixing structure for a stator chip assembly with the authorization announcement number: CN212063649U. Although this structure realizes the axial fixing of the stator chip assembly and has the advantage of convenient connection, the device cannot be firmly fixed after the convex platform and the clamping groove are installed. Because the motor will generate vibration during operation, it is easy to cause the convex platform and the clamping groove to loosen, affecting the installation stability.

[0004] Therefore, an axial fixing device for the stator chip assembly is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the utility model is to provide an axial fixing device for a stator chip assembly to solve the above problems, and improve the problem that the device cannot be firmly fixed after the convex platform and the clamping groove are installed. Because the motor will generate vibration during operation, it is easy to cause the convex platform and the clamping groove to loosen, affecting the installation stability.

[0006] The utility model realizes the above purpose through the following technical solutions. The axial fixing device for the stator chip assembly includes: a housing, on the top of which a stator chip assembly is installed; an axial fixing mechanism, which is installed between the housing and the stator chip assembly and can fix the stator chip assembly; wherein, the axial fixing mechanism includes a hollow shaft installed inside the housing, several rib plates are installed on the top of the housing, several convex platforms are installed at the bottom of the surface of the stator chip assembly, the convex platforms are clamped with the rib plates, and a fixing component is installed through the inside of the rib plates, and the fixing component is used to lock the convex platforms.

[0007] Preferably, the fixing component includes a groove formed on one side of the rib plate. An installation cavity is formed inside the rib plate at the bottom of the groove. A first sliding plate is slidably installed inside the installation cavity. A hollow rod is fixedly installed at the top of the first sliding plate. The top end of the hollow rod penetrates through the installation cavity and extends into the inner cavity of the groove. A pressing plate is fixedly installed at the top end of the hollow rod.

[0008] Preferably, a second sliding plate is slidably installed at the bottom inside the hollow rod. A plug rod is fixedly installed at the top of the second sliding plate. The top end of the plug rod penetrates through the pressing plate and is slidably connected therewith. A return spring is sleeved on the surface of the plug rod. The return spring is fixedly installed between the second sliding plate and the top inside the hollow rod.

[0009] Preferably, an airbag is fixedly installed at the bottom inside the installation cavity. An air pipe is connected and communicated at the top of the airbag. The top end of the air pipe penetrates through the first sliding plate and is communicated with the hollow rod. The top of the airbag is fixedly connected with the bottom of the first sliding plate.

[0010] Preferably, threaded through holes are formed on the surface of the hollow shaft for the motor rotating shaft to penetrate through.

[0011] Preferably, grooves with the same number are formed on the surfaces of several rib plates. Several bosses and several rib plates are connected through the grooves.

[0012] Preferably, the pressing plate is in the shape of a "rectangle", and the pressing plate is made of a rubber component.

[0013] The beneficial effects of the present utility model are as follows:

[0014] When the boss is clamped with the groove, the boss drives the pressing plate to squeeze the hollow rod and the first sliding plate. When the first sliding plate is pressed and descends, the first sliding plate drives the airbag to descend, and injects the gas inside the airbag into the inside of the hollow rod. When the gas enters the inside of the hollow rod, the gas squeezes the second sliding plate and the plug rod, so that the plug rod is inserted into the inside of the boss, locking the boss and the stator chip assembly, which can fasten the stator chip assembly and the rib plate, and avoid the situation that the stator chip assembly and the rib plate are loosened, affecting the installation stability.

[0015] When installing the stator chip assembly, insert the stator chip assembly into the inside of the machine shell and contact with the hollow shaft. When the hollow shaft enters the inside of the machine shell, rotate the stator chip assembly to drive the boss to contact with the rib plate and clamp the boss, which can realize axial fixation by using the connection between the boss and the rib plate, so as to facilitate the installation of the stator chip assembly. Description of the Drawings

[0016] Figure 1Schematic structural diagram of the present utility model;

[0017] Figure 2 Schematic split structural diagram of the present utility model;

[0018] Figure 3 Schematic cross-sectional structural diagram of the rib plate of the present utility model;

[0019] Figure 4 Schematic partial structural diagram of the fixing component of the present utility model.

[0020] In the figure: 10, housing; 11, stator chip assembly; 20, axial fixing mechanism; 21, hollow shaft; 22, rib plate; 23, boss; 24, fixing component; 241, groove; 242, installation cavity; 243, first slide plate; 244, hollow rod; 245, pressing plate; 246, airbag; 247, air pipe; 248, second slide plate; 249, insertion rod; 2401, return spring. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] During specific implementation: As Figures 1-4 shown, the axial fixing device for the stator chip assembly includes:

[0023] A housing 10, on the top of which a stator chip assembly 11 is installed;

[0024] Threaded through holes are provided on the surface of the hollow shaft 21 for the motor rotating shaft to penetrate through

[0025] An axial fixing mechanism 20, which is installed between the housing 10 and the stator chip assembly 11 and can fix the stator chip assembly 11;

[0026] Among them, the axial fixing mechanism 20 includes a hollow shaft 21 installed inside the housing 10. A plurality of rib plates 22 are installed on the top of the housing 10. A plurality of bosses 23 are installed at the bottom of the surface of the stator chip assembly 11. The bosses 23 and the rib plates 22 are clamped. A fixing component 24 is installed through the inside of the rib plate 22, and the fixing component 24 is used to lock the bosses 23;

[0027] In this embodiment, the stator chip assembly 11 is inserted into the interior of the housing 10 and contacts the hollow shaft 21. When the hollow shaft 21 enters the interior of the housing 10, the stator chip assembly 11 is rotated to drive the boss 23 into contact with the rib 22, and the boss 23 can be clamped.

[0028] As Figure 2 , Figure 3 and Figure 4 shown, the fixing component 24 includes a groove 241 formed on one side of the rib 22. An installation cavity 242 is formed inside the rib 22 at the bottom of the groove 241. A first slide plate 243 is slidably installed inside the installation cavity 242. A hollow rod 244 is fixedly installed at the top of the first slide plate 243. The top end of the hollow rod 244 penetrates through the installation cavity 242 and extends into the inner cavity of the groove 241. A pressing plate 245 is fixedly installed at the top end of the hollow rod 244; a second slide plate 248 is slidably installed at the bottom of the inner cavity of the hollow rod 244. A plug rod 249 is fixedly installed at the top of the second slide plate 248. The top end of the plug rod 249 penetrates through the pressing plate 245 and is slidably connected to it. A return spring 2401 is sleeved on the surface of the plug rod 249. The return spring 2401 is fixedly installed between the second slide plate 248 and the top of the inner cavity of the hollow rod 244; an airbag 246 is fixedly installed at the bottom of the inner cavity of the installation cavity 242. An air pipe 247 is connected and communicated at the top of the airbag 246. The top end of the air pipe 247 penetrates through the first slide plate 243 and is communicated with the hollow rod 244. The top of the airbag 246 is fixedly connected to the bottom of the first slide plate 243;

[0029] In this embodiment, the boss 23 drives the pressing plate 245 to form extrusion on the hollow rod 244 and the first slide plate 243. When the first slide plate 243 is pressed and descends, the first slide plate 243 drives the airbag 246 to descend, and injects the gas inside the airbag 246 into the inside of the hollow rod 244. When the gas enters the inside of the hollow rod 244, the gas forms extrusion on the second slide plate 248 and the plug rod 249, so that the plug rod 249 is inserted into the inside of the boss 23, forming locking on the boss 23 and the stator chip assembly 11;

[0030] In this embodiment, a plurality of grooves 241 with the same quantity are formed on the surfaces of a plurality of ribs 22. A plurality of bosses 23 and a plurality of ribs 22 are connected through the grooves 241; it has the advantage of enabling the boss 23 to be adapted to the groove 241, so as to facilitate the installation of the stator chip assembly 11; the shape of the pressing plate 245 is "rectangular", and the material of the pressing plate 245 is a rubber component.

[0031] When the stator chip assembly 11 is installed in the present utility model, the stator chip assembly 11 is inserted into the interior of the housing 10 and contacts the hollow shaft 21. When the hollow shaft 21 enters the interior of the housing 10, the stator chip assembly 11 is rotated to drive the boss 23 into contact with the rib plate 22, and the boss 23 can be clamped; and when the boss 23 is clamped with the groove 241, the boss 23 drives the pressure plate 245 to squeeze the hollow rod 244 and the first slide plate 243. When the first slide plate 243 is pressed down, the first slide plate 243 drives the airbag 246 to descend, and the gas inside the airbag 246 is injected into the interior of the hollow rod 244. When the gas enters the interior of the hollow rod 244, the gas squeezes the second slide plate 248 and the insertion rod 249, so that the insertion rod 249 is inserted into the interior of the boss 23, and the boss 23 and the stator chip assembly 11 can be locked.

[0032] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Axial fixing device for stator chip assembly, characterized in that, Comprising: A casing (10), on the top of which a stator chip assembly (11) is mounted; An axial fixing mechanism (20), which is installed between the casing (10) and the stator chip assembly (11) and can fix the stator chip assembly (11); Wherein, the axial fixing mechanism (20) includes a hollow shaft (21) installed inside the casing (10), several rib plates (22) are installed on the top of the casing (10), several bosses (23) are installed on the bottom of the surface of the stator chip assembly (11), the bosses (23) and the rib plates (22) are snap-connected, and a fixing component (24) is installed through the inside of the rib plates (22), and the fixing component (24) is used to lock the bosses (23).

2. The axial fixing device for the stator core assembly according to claim 1, wherein: The fixing component (24) includes a groove (241) opened on one side of the rib plate (22), an installation cavity (242) is opened at the bottom of the rib plate (22) and located inside the groove (241), a first sliding plate (243) is slidably installed inside the installation cavity (242), a hollow rod (244) is fixedly installed on the top of the first sliding plate (243), the top end of the hollow rod (244) penetrates through the installation cavity (242) and extends into the inner cavity of the groove (241), and a pressing plate (245) is fixedly installed at the top end of the hollow rod (244).

3. The axial fixing device for the stator chip assembly according to claim 2, wherein: A second sliding plate (248) is slidably installed at the bottom of the inner cavity of the hollow rod (244), a plug rod (249) is fixedly installed on the top of the second sliding plate (248), the top end of the plug rod (249) penetrates through the pressing plate (245) and is slidably connected thereto, a return spring (2401) is sleeved on the surface of the plug rod (249), and the return spring (2401) is fixedly installed between the second sliding plate (248) and the top of the inner cavity of the hollow rod (244).

4. The axial fixing device for the stator chip assembly according to claim 3, wherein: An airbag (246) is fixedly installed at the bottom of the inner cavity of the installation cavity (242), a trachea (247) is connected and communicated to the top of the airbag (246), the top end of the trachea (247) penetrates through the first sliding plate (243) and is communicated with the hollow rod (244), and the top of the airbag (246) is fixedly connected to the bottom of the first sliding plate (243).

5. The axial fixing device for the stator core assembly according to claim 1, wherein: Threaded through holes are formed on the surface of the hollow shaft (21), and the threaded through holes are used for the motor rotating shaft to penetrate through it.

6. The axial fixing device for the stator chip assembly according to claim 2, characterized in that: The same number of grooves (241) are opened on the surfaces of several rib plates (22), and several bosses (23) and several rib plates (22) are snap-connected through the grooves (241).

7. The axial fixing device for the stator core assembly according to claim 2, characterized in that: The pressing plate (245) is in the shape of a "rectangle", and the pressing plate (245) is made of a rubber component.

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