Press fit jig of motor shell assembly

Abstract

A pressing jig of a motor shell assembly is composed of a jig pressing rod and a fixing base, an inner cavity of the fixing base is a hollow cavity, and a positioning guide device is fixedly arranged in the hollow cavity. A vertical counter bore is formed in the center in the jig pressing rod; the positioning guide device is composed of a guide seat installed in an inner cavity of the fixing seat and an elastic T-shaped block assembly movably arranged on the guide seat, and the elastic T-shaped block assembly moves up and down in the guide seat. According to the utility model, the positioning and guiding device is arranged in the cavity of the fixed seat, and the counter bore for the shaft core of the motor shell assembly to penetrate through is further arranged in the T-shaped block in the positioning and guiding device, so that the shaft core of the motor shell assembly can be downwards pressed into the fan blade, and the shaft core of the motor shell assembly can also upwards penetrate into the vertical counter bore of the jig pressing rod; therefore, the shaft core of the motor shell assembly is upwards pressed into the fan blades; the press-fit jig can press the motor shell assembly in two directions, is flexible in installation and convenient to operate, and is particularly suitable for assembling the motor shell assembly and fan blades of a large-scale air blower.

Description

Technical Field

[0001] This utility model belongs to the field of jig technology, specifically relating to a pressing jig for an electric motor housing assembly. Background Technology

[0002] The fan stator inside the blower is one of the key components driving the fan's rotation. The fan stator is mounted at the center of the fan via a motor housing assembly. When the coil windings inside the fan stator and the motor housing assembly are energized, a rotating magnetic field is generated, causing the fan to rotate. The motor housing assembly includes a metal motor housing, magnetic plates mounted on the inner wall of the motor housing, and coil windings mounted inside the motor housing. The motor housing with magnetic plates needs to be tightly installed at the center of the fan. Therefore, the traditional installation method is to manually press the motor housing into the center of the fan blades. However, for larger blowers, the fan blades are larger, and therefore the matching motor outer diameter is also larger. Manual operation makes it difficult to press the motor housing tightly into the fan blades. Moreover, manual operation can cause the center of the motor housing to deviate from the center of the fan blades, resulting in an uneven rotating magnetic field. This can easily cause the fan blades to vibrate during rotation.

[0003] In view of this, this case arises. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a pressing fixture for motor housing assemblies that ensures the center of the motor housing matches and aligns with the center of the fan blades, resulting in an ideal pressing effect.

[0005] This utility model is achieved through the following technical solution: a pressing fixture for a motor housing assembly, which consists of a fixture pressing rod and a fixed seat, characterized in that the fixed seat has a hollow cavity, and a positioning guide device is fixedly installed inside the hollow cavity.

[0006] The fixture pressure rod has a vertical countersunk hole at its center.

[0007] The positioning and guiding device consists of a guide seat installed in the inner cavity of the fixed seat and an elastic T-shaped block assembly movably mounted on the guide seat. The elastic T-shaped block assembly moves up and down within the guide seat.

[0008] The elastic T-block assembly includes a T-block, a spring sleeved on the vertical rod of the T-block, and a limiting block fixed to the lower end face of the vertical rod of the T-block; the upper end of the spring abuts against the horizontal rod of the T-block.

[0009] The T-shaped block is provided with countersunk holes.

[0010] The guide seat has an I-shaped through hole inside, the diameter of the upper end of the I-shaped through hole being smaller than the diameter of the lower end; the vertical rod of the T-shaped block passes through the upper end of the guide seat and extends to the lower end with a larger diameter, and is then locked to the limiting block by screws; the lower end of the spring abuts against the stepped surface of the upper end; the aforementioned limiting block is set in the lower end cavity of the guide seat, and the limiting block only restricts movement within the lower end cavity of the guide seat.

[0011] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model installs a positioning guide device in the cavity of the fixed seat, and further sets a countersunk hole in the T-block of the directional guide device for the shaft core of the motor housing assembly to pass through. Therefore, the shaft core of the motor housing assembly can be pressed downward into the fan blade, or the shaft core of the motor housing assembly can be inserted upward into the vertical countersunk hole of the jig pressure rod, so the shaft core of the motor housing assembly is pressed upward into the fan blade. The pressing jig of this utility model can press the motor housing assembly in both directions, which is flexible in installation and convenient in operation, and is particularly suitable for the assembly of large blower motor housing assemblies and fan blades. Attached Figure Description

[0012] The present invention will now be described in detail with reference to the accompanying drawings.

[0013] Figure 1 This is a cross-sectional schematic diagram of the present invention.

[0014] Figure 2 This is a cross-sectional schematic diagram of the T-shaped block component in this utility model.

[0015] Figure 3 This is a schematic diagram of the guide seat in this utility model.

[0016] Figure 4 This is a schematic diagram of the pressing fixture of this utility model installed in a hydraulic press.

[0017] Figure 5 This is a schematic diagram of the pressed fan blade and motor housing assembly of this utility model.

[0018] The following are the specific names of the symbols in the diagram: 1. Fixture pressure rod; 2. Positioning guide device; 3. Fixed seat; 4. Control panel; 5. Guide column; 6. Bearing panel; 7. Fixed panel; 8. Hydraulic cylinder; 9. Hydraulic rod; 10. Fan blade; 11. Guide sleeve; 12. Motor housing assembly; 101. Vertical countersunk hole; 201. T-block; 202. Spring; 203. Limiting block; 204. Screw; 205. Countersunk hole; 206. Guide seat; 207. Upper port; 208. Lower port; 1201. Shaft core. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] This utility model pressing fixture is mainly aimed at the bidirectional assembly problem of the fan blades and motor housing components inside a large blower.

[0021] Please see Figures 1 to 5 A pressing fixture for an electric motor housing assembly is provided, comprising a fixture pressing rod 1 and a fixed base 3. The fixed base 3 has a hollow cavity, within which a positioning guide device 2 is fixedly installed. The pressing fixture is integrally mounted on a hydraulic press, and the pressing fixture is driven by a hydraulic rod 9 to perform the pressing operation of the motor housing assembly 12.

[0022] like Figure 1 and Figure 4 As shown, a vertical countersunk hole 101 is provided in the center of the fixture pressure rod 1, which facilitates the insertion of the shaft core 1201 on the motor housing assembly 12.

[0023] like Figures 1 to 3 As shown, the positioning guide device 2 consists of a guide seat 206 installed in the inner cavity of the fixed seat 3 and an elastic T-shaped block assembly movably disposed on the guide seat 206. The elastic T-shaped block assembly moves up and down within the guide seat 206. The lower end of the guide seat 206 is fixedly installed on the control panel 4 by screws.

[0024] The elastic T-block assembly includes a T-block 201, a spring 202 sleeved on the vertical rod of the T-block 201, and a limiting block 203 fixed to the lower end face of the vertical rod of the T-block 201; the upper end of the spring 202 abuts against the horizontal rod of the T-block 201.

[0025] like Figure 2 As shown, the T-shaped block 201 is provided with a countersunk hole 205, which allows the shaft core 1201 on the motor housing assembly 12 to extend into it.

[0026] like Figure 3As shown, the guide seat 206 has an I-shaped through hole inside, the diameter of the upper port 207 of which is smaller than the diameter of the lower port 208. The vertical rod of the T-shaped block 201 passes through the upper port 207 of the guide seat 206 and extends to the larger diameter lower port 208, and is then locked to the limiting block 203 by screws. The lower end of the spring 202 just abuts against the stepped surface A of the upper port 207. The limiting block 203 is set in the cavity of the lower port 208 inside the guide seat 206 and further abuts against the stepped surface B, and the limiting block 203 only restricts its movement within the cavity of the lower port inside the guide seat 206. The vertical rod of the T-shaped block 201 moves within the cavities of the upper port 207 and the lower port 208, while the limiting block 203 can only move within the cavity of the lower port 208.

[0027] Under the action of spring 202, T-block 201 cannot move downwards indefinitely, thus supporting T-block 201.

[0028] The installation method of this utility model pressing fixture is as follows: First, the spring is fitted onto the vertical rod of the T-block 201. Then, the limiting block 203 is placed on the lower port 208 of the guide seat 206, and the T-block 201 extends into the lower port 208 of the guide seat. At this time, the limiting block 203 is fixed to the lower end of the vertical rod of the T-block 201 with screws. Then, the lower end of the guide seat 206 is fixedly installed on the control panel 4 with screws. In this way, the positioning guide device 2 is installed. The fixing seat 3 is placed on the positioning guide device 2 and fixed to the control panel 4 with screws. The upper end of the fixture pressure rod 1 is fixed to the bearing panel 6 of the hydraulic press. The pressing fixture is now fully installed.

[0029] like Figure 5 As shown, the specific assembly method of the pressing fixture of this utility model for the fan blade 10 and the motor housing assembly 12 is as follows: the fan blade 10 is a fan blade with openings at both the top and bottom ends; depending on the need for convenient operation, the motor housing assembly 12 can be assembled upwards or downwards. Figure 5 The motor housing assembly 12 is assembled downwards, that is, the motor housing assembly shaft core 1201 is pressed downwards into the fan blade 10. In this case, during the pressing process, the shaft core 1201 directly extends into the countersunk hole 205 of the T-block 201 to complete the pressing. Alternatively, the motor housing assembly 12 can be assembled upwards, that is, the motor housing assembly shaft core 1201 is pressed upwards into the fan blade 10. In this case, during the pressing process, the shaft core 1201 directly extends into the vertical countersunk hole 101 of the fixture pressure rod 1 to complete the pressing.

[0030] like Figure 4 and Figure 5As shown, the working process of this utility model pressing fixture is as follows: the fan blade 10 is fastened to the fixed base 3, and the separately configured guide sleeve 11 is placed at the outer edge of the fan blade. The motor housing assembly 12 is aligned with the guide sleeve 11 and placed inside the guide sleeve. The hydraulic press is started, and the hydraulic cylinder 8 works (the hydraulic cylinder is mounted on the fixed panel 7). The hydraulic rod 9 connected to the hydraulic cylinder 8 moves up and down. The lower end of the hydraulic rod 9 is fixed to the upper side of the bearing panel 6, and the fixture pressing rod 1 is fixed to the lower side of the bearing panel 6. The bearing panel 6 moves up and down on the guide column 5 (the guide column supports the fixed panel and the bearing panel respectively, and the guide column is fixed on the control panel). The bearing panel 6 and the fixture pressing rod 1 move up or down together as a whole. The driving force comes from the hydraulic cylinder 8 pushing the hydraulic rod 9 up or down, and the hydraulic rod 9 drives the bearing panel 6 and the fixture pressing rod 1 to move up or down as a whole. When the jig pressure rod 1 descends, the jig pressure rod 1 can press the motor housing assembly 12 into the fan blade. The shaft core 1201 on the motor housing assembly is inserted into the countersunk hole 205 of the T-block 201. The T-block 201 is matched with a spring 202. Therefore, the T-block has a guiding function and a buffering function.

Claims

1. A pressing fixture for an electric motor housing assembly, comprising a fixture pressing rod and a fixing seat, characterized in that, The fixed base has a hollow cavity inside, and a positioning guide device is fixedly installed inside the hollow cavity; A vertical countersunk hole is provided in the center of the fixture pressure rod; The positioning and guiding device consists of a guide seat installed in the inner cavity of the fixed seat and an elastic T-block assembly movably mounted on the guide seat. The elastic T-block assembly moves up and down within the guide seat. The elastic T-block assembly includes a T-block, a spring fitted onto the vertical rod of the T-block, and a limiting block fixed to the lower end face of the vertical rod of the T-block; the upper end of the spring abuts against the horizontal rod of the T-block.

2. The pressing fixture for a motor housing assembly according to claim 1, characterized in that, The T-block has countersunk holes.

3. The pressing fixture for a motor housing assembly according to claim 2, characterized in that, The guide seat has an I-shaped through hole inside, with the diameter of the upper end of the I-shaped through hole being smaller than the diameter of the lower end; the vertical rod of the T-shaped block passes through the upper end of the guide seat and extends to the lower end with a larger diameter, and is then locked to the limiting block by screws; the lower end of the spring abuts against the stepped surface of the upper end; the aforementioned limiting block is set in the lower end cavity of the guide seat, and the limiting block only restricts movement within the lower end cavity of the guide seat.

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