CN218829378U - Fixed plate assembly and motor comprising same - Google Patents

Abstract

The utility model discloses a fixed plate subassembly and contain its motor, including fixed plate, backup pad and the polar plate of coincide fixed in proper order, be fixed with the gear shaft on the fixed plate, and have the output hole with the output shaft clearance fit of motor, the interior week of polar plate have with the stator complex polar claw of motor, the tip of output shaft supports on the backup pad surface. Fixed plate subassembly and contain its motor, increased a backup pad in the fixed plate below for the flanging hole on the fixed plate becomes the blind hole, can prevent the risk that the grease revealed from the hole. Thereby can avoid the impurity in the grease to get into gear box inside better, cause noise interference.

Description

Fixed plate assembly and motor comprising same

Technical Field

The utility model relates to a motor design technical field especially relates to a fixed plate subassembly and contain its motor.

Background

The gear reduction stepping motor is widely applied to the field of intelligent household, intelligent automobile driving, intelligent medical driving, communication equipment driving, electronic product driving and the like.

The product is mainly applied to the automobile head-up display, so that the requirements on motor noise and reliability are further increased. In the motor structure, the motor all separates through the fixed plate subassembly with the gear box, current motor fixed plate structural design, mostly be fixed plate and polar plate direct riveting, the through-hole of fixed plate subassembly is directly passed to the output shaft bottom, because the output shaft pours into when the gear box oiling, consequently during the grease in the gear box can flow into the motor air gap through the output shaft, because gear oil is more thick, grease when flowing into in the gear is too much, will lead to motor running resistance grow, lead to motor performance reduction or motor not to operate.

SUMMERY OF THE UTILITY MODEL

In order to solve among the prior art motor output shaft and directly pass the fixed plate subassembly, among the grease in the gear box can flow into the motor air gap through the output shaft, motor running resistance grow leads to motor performance reduction or motor not technical problem of operation, the utility model provides a fixed plate subassembly and contain its motor and solve above-mentioned problem.

The utility model provides a fixed plate subassembly, including fixed plate, backup pad and the polar plate of coincide fixed in proper order, be fixed with the gear shaft on the fixed plate, and have the output shaft clearance fit's with the motor delivery outlet, the inner week of polar plate have with the stator complex polar claw of motor, the tip of output shaft supports on the backup pad surface.

Further, the fixing plate, the supporting plate and the polar plate are riveted and fixed with each other.

Furthermore, the periphery of the fixed plate is provided with a baffle attached to the shell of the motor.

Further, the fixing plate and the supporting plate are provided with a first positioning hole and a first positioning column which are matched with each other.

Furthermore, the supporting plate and the polar plate are provided with a second positioning hole and a second positioning column which are matched with each other.

Furthermore, the number of the first positioning holes, the number of the first positioning columns, the number of the second positioning holes and the number of the second positioning columns are at least two.

Furthermore, the first positioning hole is located on the fixing plate, the first positioning column and the second positioning hole are located on the supporting plate, and the second positioning column is located on the pole plate.

The utility model also provides a motor, which comprises a casing component, a rotor component, a stator component, a gear box, an output shaft and the fixing plate component, wherein the rotor component, the stator component, the gear box and the output shaft are positioned in the casing component; the primary gear of the gear box is in transmission connection with the rotor assembly, and the final gear of the gear box is in transmission connection with the output shaft.

Furthermore, a flange protruding towards the direction of the gear box is arranged at the position of the output shaft, and a limiting boss is arranged on the periphery of the output shaft.

Further, the axial distance H between the limiting step and the flanging is 0.3-0.4 mm.

The utility model has the advantages that:

(1) Fixed plate subassembly and contain its motor, increased a backup pad in the fixed plate below for the flanging hole on the fixed plate becomes the blind hole, can prevent the risk that the grease revealed from the hole. Thereby can avoid the impurity in the grease to get into inside the gear box better, cause noise interference.

(2) The utility model discloses after the assembly, there is 0.3 mm's clearance along the spacing step tip of output shaft and fixed plate turn-ups, and output shaft bottom contacts with the backup pad surface during motor operation, and the backup pad surface is the smooth surface, and roughness is little, and consequently the wearing and tearing that produce are less. Lubricating grease is injected into the hole during assembly, the grease cannot be lost, the friction force between the output shaft and the surface of the supporting plate is small during rotation, noise is well improved, and the service life of the motor is prolonged.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a perspective view of an embodiment of a mounting plate assembly according to the present invention;

fig. 2 is a perspective view of the fixing plate of the present invention;

fig. 3 is a perspective view of the support plate of the present invention;

FIG. 4 is a perspective view of the middle plate of the present invention;

fig. 5 is a schematic view of an electric machine according to the present invention;

fig. 6 is a schematic view of an output shaft of the present invention;

fig. 7 is a cross-sectional view of a fixing plate assembly according to the present invention;

FIG. 8 is a schematic view of the assembly of the fixed plate assembly with the output shaft.

In the figure, 1, a fixing plate, 101, an output hole, 102, a first positioning hole, 103, a baffle, 104, a flange, 2, a support plate, 201, a first positioning column, 202, a second positioning hole, 3, a polar plate, 301, a polar claw, 302, a second positioning column, 4, a gear shaft, 5, an output shaft, 501, a limiting boss, 6, a machine shell assembly, 7, a rotor assembly, 8, a stator assembly, 9, a gear box, 10 and a fixing plate assembly.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

Example one

As shown in fig. 1-4, a fixing plate assembly comprises a fixing plate 1, a supporting plate 2 and a pole plate 3 which are sequentially overlapped and fixed, wherein a gear shaft 4 is fixed on the fixing plate 1 and is provided with an output hole 101 movably matched with an output shaft 5 of a motor, the inner periphery of the pole plate 3 is provided with a pole claw 301 matched with a stator of the motor, and the end part of the output shaft 5 is abutted against the surface of the supporting plate 2.

The traditional fixed plate assembly only has a two-layer structure of a fixed plate and a polar plate, and because the central hollow area of the polar plate is large, the output hole in the existing fixed plate is communicated with the fixed plate assembly. After the gear box oiling, because gear oil generally is high viscosity grease, structural at current motor, gear oil can flow to motor rotor through the delivery outlet of fixed plate on, impurity in the gear box, rubbish can be brought into in the lump. When grease is attached to the surface of the rotor, the running resistance of the motor is increased, and problems of noise, vibration and the like are caused, so that the performance of the motor is reduced, and the temperature rise is increased.

The utility model discloses behind fixed backup pad 2 of coincide in the middle of fixed plate 1 and polar plate 3, become the blind hole after delivery outlet 101 on the original fixed plate is plugged up, pour into lubricating grease into after, the clearance between the two boards is less, can't flow out, consequently lubricating grease is kept apart in 9 parts of gear box, inside the effectual grease that prevents flowed into the motor through this hole to increase motor reliability.

Preferably, the fixing plate 1, the supporting plate 2 and the pole plate 3 are riveted to each other. The riveting structure enables the three to be tightly connected, and the gap between two adjacent plates is reduced. During assembly, the first step is as follows: the gear shaft 4 and the fixed plate 1 are riveted firstly; the second step is that: riveting the riveted assembly with the support plate 2, and the third step: and riveting with the polar plate 3 to form a fixed plate assembly.

For the convenience of assembly, the fixing plate 1 and the supporting plate 2 are provided with a first positioning hole 102 and a first positioning column 201 which are matched with each other, so that riveting fixation is facilitated after positioning. Similarly, the support plate 2 and the pole plate 3 have a second positioning hole 202 and a second positioning column 302 which are matched with each other. At least two first positioning holes 102, two first positioning posts 201, two second positioning holes 202 and two second positioning posts 302 are provided. This way circumferential positioning can be achieved.

In the present embodiment, three first positioning holes 102 and three first positioning pillars 201 are provided, and two second positioning holes 202 and two second positioning pillars 302 are provided. In addition, the first positioning hole 102 is located on the fixing plate 1, the first positioning column 201 and the second positioning hole 202 are located on the supporting plate 2, and the second positioning column 302 is located on the plate 3. The second positioning hole 202 may also penetrate through the fixing plate 1.

In a typical arrangement of the fixed plate 1, the fixed plate 1 further has a baffle plate 103 attached to the housing of the motor on the outer periphery thereof.

Example two

As shown in fig. 5, an electric machine comprises a casing assembly, a rotor assembly 7 positioned in the casing assembly, a stator assembly 8, a gear box 9, an output shaft 5 and the fixing plate assembly; the primary gear of the gear box 9 is in transmission connection with the rotor assembly 7, and the final gear is in transmission connection with the output shaft 5. The enclosure assembly generally includes a housing and a cover.

EXAMPLE III

As shown in fig. 6 and 7, in the second embodiment, the output hole 101 has a flange 104 protruding toward the gear case 9, and the outer periphery of the output shaft 5 has a limit boss 501.

As shown in FIG. 8, the axial distance H between the limit step and the flange 104 is 0.3 mm-0.4 mm.

In the existing motor structure, because of the through hole of the output hole, the output shaft 5 is matched with the flanging 104 on the fixing plate for limiting through the limiting step, the output shaft 5 rubs with the upper edge of the flanging 104 after rotating, and because the output hole is manufactured by means of smooth forming, the upper edge of the flanging 104 cannot be subjected to surface treatment, so that the roughness of the position is larger. After lubricating grease runs off through the output hole, no lubricating grease contact exists at the friction position of the flanging 104, so that noise is easy to generate during the operation of the motor, and the surface of a part is greatly abraded.

This embodiment remains original spacing boss 501 and turn-ups 104 design, on the basis that reduces original design change, through backup pad 2 with output shaft 5 jack-up, makes spacing step and turn-ups 104 last edge leave certain clearance, output shaft 5 bottom and backup pad 2 surface contact when the motor operation, backup pad 2 surface is the smooth surface, and the roughness is little, and consequently the wearing and tearing that produce are less. Lubricating grease is injected into the hole during assembly, the grease cannot run off, the friction force between the output shaft 5 and the surface of the supporting plate 2 is small when the output shaft rotates, noise is well improved, and the service life of the motor is prolonged.

In the description of the present invention, it is to be understood that the terms "center", "inner", "outer", "axial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. A retaining plate assembly, comprising: including fixed plate, backup pad and the polar plate that coincide in proper order is fixed, be fixed with the gear shaft on the fixed plate, and have with the output shaft clearance fit's of motor delivery port, the interior week of polar plate have with the stator complex polar claw of motor, the tip of output shaft supports on the backup pad surface.

2. A fixation plate assembly as claimed in claim 1, wherein: the fixed plate, the supporting plate and the polar plate are riveted and fixed with each other.

3. A fixation plate assembly as claimed in claim 1, wherein: the periphery of the fixed plate is provided with a baffle attached to the shell of the motor.

4. A fixation plate assembly as claimed in claim 1, wherein: the fixing plate and the supporting plate are provided with a first positioning hole and a first positioning column which are matched with each other.

5. The fixed plate assembly of claim 4, wherein: the supporting plate and the polar plate are provided with a second positioning hole and a second positioning column which are matched with each other.

6. The fixed plate assembly of claim 5, wherein: at least two first positioning holes, at least two first positioning columns, at least two second positioning holes and at least two second positioning columns are arranged.

7. The fixed plate assembly of claim 5, wherein: the first positioning hole is located on the fixing plate, the first positioning column and the second positioning hole are located on the supporting plate, and the second positioning column is located on the polar plate.

8. An electric machine characterized by: comprising a housing assembly, a rotor assembly located within the housing assembly, a stator assembly, a gear box, an output shaft, and the fixed plate assembly of any of claims 1-7; the primary gear of the gear box is in transmission connection with the rotor assembly, and the final gear of the gear box is in transmission connection with the output shaft.

9. The electric machine of claim 8, wherein: a flange protruding towards the direction of the gear box is arranged at the position of the output shaft, and a limiting boss is arranged on the periphery of the output shaft.

10. The electric machine of claim 9, wherein: the axial distance H between the limiting boss and the flanging is 0.3-0.4 mm.

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