Device for pressing front and rear bearings and output shaft of EPS motor

Abstract

The utility model discloses a device for pressing front and rear bearings and an output shaft of an EPS motor, which relates to the field of motor assembly and comprises a fixing frame, and an output shaft limiting block and an end cover positioning disc are arranged at the bottom of the fixing frame. A pressing rod is vertically, elastically and slidably arranged on the top of the fixing frame, a pressing head is arranged at the lower end of the pressing rod, and a rear bearing positioning ring is elastically arranged on the periphery of the pressing head. A rotor positioning body is fixedly arranged on the side wall of the fixing frame, and a rotor clamping groove is formed in the side wall of the rotor positioning body. Press fitting of the front bearing, the rear bearing and the output shaft is completed at the same time, investment of equipment cost is reduced, meanwhile, the operation process is convenient and fast, and assembling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor assembly field, concretely relates to a device for EPS motor pressure front and rear bearing and output shaft. BACKGROUND

[0002] The motor used for the electric power steering system is called EPS motor, at present, the front and rear ends of the rotor need to be installed with bearings and the rotor and the output shaft need to be pressed during the assembly of the EPS motor, however, the process of pressing the output shaft on the rotor needs to be completed by two sets of equipment in the industry, which leads to the increase of the assembly cost and the reduction of the assembly processing efficiency.

[0003] Therefore, the device for EPS motor pressure front and rear bearing and output shaft is provided. UTILITY MODEL CONTENTS

[0004] In view of the above-mentioned problems existing in the assembly of the EPS motor, the utility model is provided.

[0005] Therefore, the device for EPS motor pressure front and rear bearing and output shaft is provided.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A device for EPS motor pressure front and rear bearing and output shaft, comprising a fixing frame, the bottom of the fixing frame is provided with an output shaft limiting block and an end cover positioning disc; the top of the fixing frame is vertically and elastically provided with a pressing rod, the lower end of the pressing rod is provided with a pressing head, the periphery of the pressing head is elastically provided with a rear bearing positioning ring; the side wall of the fixing frame is fixedly provided with a rotor positioning body, and the side wall of the rotor positioning body is provided with a rotor clamping groove.

[0008] Preferably, the output shaft limiting block is arranged below the end cover positioning disc, and the inside of the end cover positioning disc and the position corresponding to the output shaft limiting block are provided with an opening.

[0009] Preferably, the rod wall of the pressing rod is sleeved with a circular spring, and the two ends of the circular spring are fixedly connected with the upper end of the pressing rod and the top of the fixing frame, respectively.

[0010] Preferably, the top of the rear bearing positioning ring and the lower end of the pressing rod are connected through a rectangular spring, and the center position of the pressing head and the rear bearing positioning ring is aligned.

[0011] Further, the two sides of the rotor positioning body are provided with a waist-shaped hole, and the inside of the waist-shaped hole is provided with an adjusting bolt which is threadedly connected with the fixing frame.

[0012] Preferably, the upper end of the pressing rod is arranged corresponding to the position of the moving end of the external servo press.

[0013] In the above technical solution, the technical effects and advantages of the utility model are provided:

[0014] The utility model discloses, through the output shaft limiting block, end cap locating disc, rear bearing locating ring and rotor locating body that are equipped, the inside output shaft limiting block can be positioned and placed output shaft, the inside end cap locating disc can be positioned and placed end cap bearing assembly, the inside rear bearing locating ring can be positioned and placed rear bearing, and rotor locating body can be in the inside rotor slot of magnetic adsorption of rotor, finally through the servo press of outside down pressure rod, make the pressure head of pressure rod lower end first push rotor and move down, and the front end of rotor is pressed into end cap bearing assembly first, then is pressed into the output shaft below, because output shaft limiting block will limit rotor and will not move down again, and rear bearing will move down continuously with rear bearing locating ring and enter the rear end of rotor, this process can complete the pressure equipment of front and rear bearing and output shaft simultaneously, reduce the equipment cost input, improve assembly efficiency.

[0015] The utility model discloses, through the circular spring of setting on the pressure rod, when servo press down pressure rod, make circular spring also be compressed, when servo press no longer exerts pressure on pressure rod, at this moment, circular spring exerts the elastic force of going up to pressure rod, make pressure rod can reset fast.

[0016] The utility model discloses, through the rectangular spring of setting on rear bearing locating ring, in the process that rear bearing locating ring is pressed into in the rear end of rotor, rear bearing locating ring also will compress rectangular spring, contrary rectangular spring also will exert the elastic force to rear bearing locating ring, thereby make bearing locating ring have the function of floating, avoid damaging to rear bearing. ACCURACY OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment or prior art of the present application, the following will briefly introduce the drawings needed to be used in the embodiment, obviously, the drawings in the following description are only some embodiments described in the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings.

[0018] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0019] Figure 2 It is the sectional view of fixed frame, output shaft limiting block, end cap locating disc, pressure rod, rear bearing locating ring and rotor locating body in the utility model;

[0020] Figure 3 It is the sectional view of the utility model; Figure 1

[0021] ​Reference signs:

[0022] 1, fixed frame; 2, output shaft limiting block; 3, end cover positioning disc; 4, pressing rod; 5, pressing head; 6, rear bearing positioning ring; 7, rotor positioning body; 8, circular spring; 9, rectangular spring; 10, adjusting bolt. DETAILED DESCRIPTION

[0023] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.

[0024] The utility model provides a kind of device for EPS motor press front and rear bearing and output shaft as shown in Figures 1-3 It includes fixed frame 1, the bottom of fixed frame 1 is provided with output shaft limiting block 2 and end cover positioning disc 3, output shaft limiting block 2 is arranged below end cover positioning disc 3, and the inside of end cover positioning disc 3 and the position corresponding with output shaft limiting block 2 is equipped with opening, the inside of output shaft limiting block 2 can limit the placement of output shaft, and the inside of end cover positioning disc 3 can be positioned and placed end cover bearing assembly;The top of fixed frame 1 is vertically elastically slidably provided with pressing rod 4, the rod wall of pressing rod 4 is sleeved with circular spring 8, and the two ends of circular spring 8 are respectively fixedly connected with the upper end of pressing rod 4 and the top of fixed frame 1, and the upper end of pressing rod 4 is arranged in position corresponding with the moving end of external servo press, and the lower end of pressing rod 4 is provided with pressing head 5, the periphery of pressing head 5 is elastically provided with rear bearing positioning ring 6, and the top of rear bearing positioning ring 6 is connected with the lower end of pressing rod 4 by rectangular spring 9, and the center position of pressing head 5 and rear bearing positioning ring 6 is aligned, and the inside of rear bearing positioning ring 6 can be positioned and placed rear bearing;The side wall of fixed frame 1 is fixedly provided with rotor positioning body 7, and the side wall of rotor positioning body 7 is provided with rotor clamping groove, and rotor positioning body 7 can magnetically attract rotor inside rotor clamping groove, since rotor itself has magnetism, rotor positioning body 7 is metal material, and can ensure that rotor is magnetically attracted and placed.

[0025] When pressing: control the work of external servo press, servo press extends and presses down pressing rod 4, so that the pressing head 5 at the lower end of pressing rod 4 contacts with the rear end of rotor, while pushing down rotor, the front end of rotor is pressed into end cover bearing assembly first, then rotor is continuously pressed down and pressed into the output shaft below, since output shaft limiting block 2 will limit rotor from further downward displacement, and rear bearing will continuously move down with rear bearing positioning ring 6 and enter the rear end of rotor, so that the pressing of front and rear bearings and output shaft can be completed simultaneously, which reduces the investment of equipment cost and improves assembly efficiency.

[0026] In order to be able to fine tune the up-and-down position of rotor positioning body 7, as shown in Figure 1As shown, the two sides of the rotor positioning body 7 are provided with waist-shaped holes, and the inside of the waist-shaped holes is provided with an adjusting bolt 10 which is threadedly connected with the fixing frame 1, and the staff loosens the adjusting bolt 10 through a wrench, so that the rotor positioning body 7 moves through the waist-shaped holes on the two sides, and then the position is fixed by tightening the adjusting bolt 10.

[0027] The above only describes certain exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the present application.

Claims

1. A device for pressing the front and rear bearings and output shaft of an EPS motor, comprising a fixing frame (1), characterized in that: The bottom of the fixing frame (1) is provided with an output shaft limiting block (2) and an end cover positioning plate (3). The top of the fixed frame (1) is provided with a vertical elastic sliding pressure rod (4), and the lower end of the pressure rod (4) is provided with a pressure head (5). The outer periphery of the pressure head (5) is provided with a rear bearing positioning ring (6). The side wall of the fixed frame (1) is fixedly provided with a rotor positioning body (7), and the side wall of the rotor positioning body (7) is provided with a rotor slot.

2. The device for pressing the front and rear bearings and output shaft of an EPS motor according to claim 1, characterized in that: The output shaft limiting block (2) is located below the end cover positioning plate (3), and the end cover positioning plate (3) has an opening inside that corresponds to the position of the output shaft limiting block (2).

3. The device for pressing the front and rear bearings and output shaft of an EPS motor according to claim 1, characterized in that: The rod wall of the pressure rod (4) is fitted with a circular spring (8), and the two ends of the circular spring (8) are fixedly connected to the upper end of the pressure rod (4) and the top of the fixing frame (1), respectively.

4. The device for pressing the front and rear bearings and output shaft of an EPS motor according to claim 1, characterized in that: The top of the rear bearing positioning ring (6) is connected to the lower end of the pressure rod (4) by a rectangular spring (9), and the pressure head (5) is aligned with the center position of the rear bearing positioning ring (6).

5. The device for pressing the front and rear bearings and output shaft of an EPS motor according to claim 1, characterized in that: Both sides of the rotor positioning body (7) are provided with waist-shaped holes, and the interior of the waist-shaped holes is provided with adjusting bolts (10) that are threadedly connected to the fixing frame (1).

6. The device for pressing the front and rear bearings and output shaft of an EPS motor according to claim 1, characterized in that: The upper end of the pressure rod (4) is positioned corresponding to the moving end of the external servo press.

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