Fan assembling device

Abstract

An assembling device for a fan comprises a shaft clamp jacking mechanism arranged in the middle of a workbench, a positioning base is arranged above the workbench and used for containing a fan assembly, the lower portion of the positioning base is connected with the workbench through an elastic telescopic rod, a through hole is machined in the middle of the positioning base and used for the shaft clamp jacking mechanism to penetrate through, and an upper pressing block is arranged above the positioning base; the shaft clamp jacking mechanism comprises a guide sleeve, a jacking rod is slidably arranged in the guide sleeve, a groove is machined in the top of the guide sleeve and used for containing a shaft clamp, a stepped hole is machined in the middle of the groove and communicated with the inner hole, the upper portion of the jacking rod penetrates through the stepped hole and extends out of the guide sleeve, and the jacking rod is sleeved with the shaft clamp. During working, the upper pressing block integrally presses down the positioning seat on which the fan assembly is placed, the guide sleeve firstly extends into the positioning sleeve of the fan assembly, and then the rotating shaft presses the ejector rod into the guide sleeve and presses the shaft clamp at the upper part of the guide sleeve into the annular groove of the rotating shaft; the device is simple in structure, accurate in positioning and capable of automatically completing assembling work of the small-size shaft clamps in the fan assembly, and the working efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to a fan assembly device. Background Technology

[0002] Cooling fans are widely used in various equipment to ensure that the equipment operates within a suitable temperature range. Therefore, the heat dissipation performance of cooling fans is crucial for equipment operation. The motor is the core component of the fan product. In existing technologies, external rotor motors used in fans generally include a stator assembly and a rotor assembly. The stator assembly is fixed in the middle of the housing, with a stator bearing seat inside. The stator bearing seat has a main shaft hole (usually housing a bushing or bearing), and the winding coil is installed outside the stator bearing seat. The rotor assembly includes a main shaft and a magnetic ring assembly fixed in the middle of the impeller assembly. The front end of the main shaft passes through the main shaft hole, and the main shaft is connected to the main shaft hole through a bushing or bearing. A shaft clamp is then installed at the end of the main shaft for axial positioning. In existing technologies, the shaft clamp assembly is mostly done manually. Due to the small size of the main shaft hole and the main shaft, the shaft clamp assembly is inconvenient and inefficient. Utility Model Content

[0003] To address the shortcomings mentioned above, this utility model provides a fan assembly device.

[0004] To achieve the above objectives, this utility model provides a fan assembly device, including a worktable, a shaft clamping and pressing mechanism disposed in the middle of the worktable, a positioning seat above the worktable for placing a fan assembly, the lower part of the positioning seat being connected to the worktable via an elastic telescopic rod, a through hole machined in the middle of the positioning seat for the shaft clamping and pressing mechanism to pass through, a limiting block fixed on the worktable to limit the outer side of the fan assembly, an upper pressing block above the positioning seat, and a cylinder connected to the upper part of the upper pressing block;

[0005] The shaft clamp pressing mechanism includes a guide sleeve fixed to the worktable at its lower part. A push rod is slidably provided in the inner hole of the guide sleeve. A compression spring is installed at the lower part of the push rod. A groove is machined on the top of the guide sleeve for placing the shaft clamp. A stepped hole is machined in the middle of the groove and connects to the inner hole. After the upper part of the push rod retracts, it passes through the stepped hole and extends out of the guide sleeve. The shaft clamp is sleeved on the outside of the push rod. The push rod and the rotating shaft in the fan assembly are arranged vertically in correspondence.

[0006] As a further improvement of this utility model, the limiting blocks are provided in three or more sets in a centrally symmetrical manner, and the side of the limiting blocks facing the positioning seat is machined with an arc-shaped side groove.

[0007] As a further improvement of this utility model, the positioning groove on the upper part of the positioning seat matches the shape of the bottom of the housing of the fan assembly.

[0008] As a further improvement of this utility model, the cylinder is mounted on the upper part of the upper fixing plate, and the lower edge of the upper fixing plate is fixed to the workbench by a column.

[0009] As a further improvement of this utility model, the groove depth is less than the thickness of the shaft clip, and the groove size is greater than the shaft clip and can be radially opened by the shaft clip.

[0010] As a further improvement of this utility model, the outer diameter of the guide sleeve matches the lower inner diameter of the positioning sleeve in the fan assembly, and the upper edge of the guide sleeve is chamfered.

[0011] As a further improvement of this utility model, the large diameter of the stepped hole is larger than the outer diameter of the rotating shaft.

[0012] The beneficial effects of this utility model are as follows:

[0013] In this device, an upper pressure block presses down the entire positioning seat containing the fan assembly, placing the shaft clip in the groove on the upper part of the guide sleeve and positioning it through the center of the push rod. The push rod and the guide sleeve are connected by an elastic telescopic structure. The guide sleeve first extends into the positioning sleeve of the fan assembly, and then the rotating shaft inside the positioning sleeve presses the push rod into the guide sleeve and presses the shaft clip on the upper part of the guide sleeve into the annular groove of the rotating shaft. The device has a simple structure, accurate positioning, and can automatically complete the assembly of small-sized shaft clips in the fan assembly, effectively improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a front view of a fan assembly device according to the present invention;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 for Figure 2 View B in the middle;

[0017] Figure 4 This is a top view of a fan assembly device according to the present invention;

[0018] Figure 5 This is a schematic diagram of the operation of a fan assembly device according to the present invention.

[0019] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0020] Figure 7 This is a structural diagram of the fan assembly after the shaft card is assembled.

[0021] In the diagram: 1. Workbench; 2. Limiting block; 21. Arc-shaped side groove; 3. Elastic telescopic rod; 4. Positioning seat; 41. Positioning groove; 42. Through hole; 5. Shaft clamp pressing mechanism; 51. Guide sleeve; 511. Groove; 512. Stepped hole; 513. Inner hole; 52. Push rod; 53. Compression spring; 6. Column; 7. Upper pressure block; 8. Cylinder; 9. Upper fixing plate; 10. Shaft clamp; 11. Impeller assembly; 111. Magnetic ring; 112. Rotating shaft; 113. Annular groove; 12. Housing; 121. Stator assembly; 122. Positioning sleeve; 123. Inner shoulder; 124. Metal bushing. Detailed Implementation

[0022] like Figure 1 , Figure 4 As shown, the assembly device for a fan according to this utility model includes a workbench 1, a shaft clamping mechanism 5 located in the middle of the workbench 1, a positioning seat 4 above the workbench 1 for placing a fan assembly, the lower part of the positioning seat 4 is connected to the workbench 1 via an elastic telescopic rod 3, the upper part of the positioning seat 4 is machined with a positioning groove 41 that matches the bottom shape of the housing 12 of the fan assembly, the middle part of the positioning seat 4 is machined with a through hole 42 for the shaft clamping mechanism 5 to pass through, a limiting block 2 is fixed on the workbench 1 to limit the outer side of the fan assembly, the limiting block 2 is centrally symmetrically arranged in three or more sets, the side of the limiting block 2 facing the positioning seat 4 is machined with an arc-shaped side groove 21, an upper pressing block 7 is provided above the positioning seat 4, the upper part of the upper pressing block 7 is connected to a cylinder 8, the cylinder 8 is installed on the upper part of the upper fixing plate 9, and the lower edge of the upper fixing plate 9 is fixed to the workbench 1 via a column 6;

[0023] The shaft clamp pressing mechanism 5 includes a guide sleeve 51 fixed to the worktable 1 at its lower part. A push rod 52 is slidably disposed in the inner hole 513 of the guide sleeve 51. A compression spring 53 is installed at the lower part of the push rod 52. A groove 511 is machined on the top of the guide sleeve 51 for placing the shaft clamp 10. The depth of the groove 511 is less than the thickness of the shaft clamp 10. The size of the groove 511 is larger than the shaft clamp 10 and can allow the shaft clamp 10 to open radially. A stepped hole 512 is machined in the middle of the groove 511 to connect to the inner hole 513. After the upper part of the push rod 52 retracts, it passes through the stepped hole 512 and extends out of the guide sleeve 51 (see...). Figure 2 , Figure 3 The top rod 52 is chamfered at the top, and the shaft clip 10 is sleeved on the outside of the top rod 52. The top rod 52 and the rotating shaft 112 in the fan assembly are arranged vertically and vertically. The large diameter of the stepped hole 512 is larger than the outer diameter of the rotating shaft 112. The outer diameter of the guide sleeve 51 matches the lower inner diameter of the positioning sleeve 122 in the fan assembly. The upper edge of the guide sleeve 51 is chamfered.

[0024] In this device, an upper pressure block presses down the entire positioning seat containing the fan assembly, placing the shaft clip in the groove on the upper part of the guide sleeve and positioning it through the center of the push rod. The push rod and the guide sleeve are connected by an elastic telescopic structure. The guide sleeve first extends into the positioning sleeve of the fan assembly, and then the rotating shaft inside the positioning sleeve presses the push rod into the guide sleeve and presses the shaft clip on the upper part of the guide sleeve into the annular groove of the rotating shaft. The device has a simple structure, accurate positioning, and can automatically complete the assembly of small-sized shaft clips in the fan assembly, effectively improving work efficiency.

[0025] In practical use, for ease of understanding of this utility model, it will be described in conjunction with the accompanying drawings;

[0026] like Figure 7 As shown, the fan assembly includes an impeller assembly 11 and a housing 12. A rotating shaft 112 and a magnetic ring 111 are fixed at the center of the impeller assembly 11. An annular groove 113 is machined near the end of the rotating shaft 112 for mounting a shaft clip. An integral positioning sleeve 122 is provided in the middle of the housing 12. A stator assembly 121 and a corresponding magnetic ring 111 are fixed on the outside of the positioning sleeve 122. A metal bushing 124 is installed inside the positioning sleeve 122. An inner shoulder 123 is formed in the middle of the inner wall of the positioning sleeve 122. After the impeller assembly 11 and the housing 12 are assembled, the rotating shaft 112 passes through the center of the metal bushing 124. The position of the annular groove 113 is just below the inner shoulder 123. The device in this embodiment is mainly used to assemble the shaft clip in the annular groove of the rotating shaft to prevent the impeller assembly from separating from the housing.

[0027] During operation, the fan assembly is pre-assembled: the impeller shaft in the middle of the impeller assembly is inserted into the metal bushing of the positioning sleeve in the middle of the housing. The magnetic ring and stator assembly will automatically be attracted and positioned. After the shaft passes through the metal bushing, the annular groove at the end of the shaft clip is just below the inner shoulder. The shaft clip is then placed on the push rod in the middle of the guide sleeve. The shaft clip slides down the push rod into the groove of the guide sleeve. Then, the pre-assembled fan assembly is placed on the upper part of the positioning seat, with the impeller assembly facing upwards. The lower part of the housing abuts against the positioning groove of the positioning seat. The evenly distributed limit blocks limit the outer side of the housing. The cylinder drives the upper pressure block downwards, and the upper pressure block... The block is pressed against the middle of the impeller, pressing down the fan assembly and positioning seat as a whole. The elastic telescopic rod retracts elastically, and the limiting blocks around the housing guide the fan assembly to prevent it from shifting during downward movement. As the fan assembly moves downward, the guide sleeve passes through the through hole in the middle of the positioning seat and extends into the positioning sleeve in the middle of the housing. Then, the lower end of the shaft contacts the upper end of the push rod and presses the push rod down. Under force, the push rod slides down along the inner hole of the guide sleeve, and the compression spring at the lower part of the push rod retracts elastically. The end of the shaft extends into the stepped hole of the guide sleeve, and the shaft retainer in the upper groove of the guide sleeve is pressed into the annular groove of the shaft (see...). Figure 5 , Figure 6 After the shaft clip is assembled, each component is reset in sequence, and the assembled fan assembly can be removed.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fan assembly device, characterized in that: The device includes a worktable (1) and a shaft clamping mechanism (5) located in the middle of the worktable (1). A positioning seat (4) is provided above the worktable (1) for placing the fan assembly. The lower part of the positioning seat (4) is connected to the worktable (1) through an elastic telescopic rod (3). A through hole (42) is machined in the middle of the positioning seat (4) for the shaft clamping mechanism (5) to pass through. A limiting block (2) is fixed on the worktable (1) to limit the outer side of the fan assembly. An upper pressing block (7) is provided above the positioning seat (4). A cylinder (8) is connected to the upper part of the upper pressing block (7). The shaft clamp pressing mechanism (5) includes a guide sleeve (51) fixed to the worktable (1) at its lower part. A push rod (52) is slidably provided in the inner hole (513) of the guide sleeve (51). A compression spring (53) is installed at the lower part of the push rod (52). A groove (511) is machined on the top of the guide sleeve (51) for placing the shaft clamp (10). A stepped hole (512) is machined in the middle of the groove (511) and connects to the inner hole (513). After the upper part of the push rod (52) retracts, it passes through the stepped hole (512) and extends out of the guide sleeve (51). The shaft clamp (10) is sleeved on the outside of the push rod (52). The push rod (52) and the rotating shaft (112) in the fan assembly are arranged vertically in correspondence.

2. The fan assembly device according to claim 1, characterized in that: The limiting block (2) is provided in three or more sets in a centrally symmetrical manner, and the limiting block (2) has an arc-shaped side groove (21) machined on the side facing the positioning seat (4).

3. The fan assembly device according to claim 1, characterized in that: The positioning groove (41) on the upper part of the positioning seat (4) matches the shape of the bottom of the housing (12) of the fan assembly.

4. The fan assembly device according to claim 1, characterized in that: The cylinder (8) is mounted on the upper part of the upper fixed plate (9), and the lower edge of the upper fixed plate (9) is fixed to the worktable (1) by a column (6).

5. The fan assembly device according to claim 1, characterized in that: The groove (511) is less than the thickness of the shaft clip (10), and the groove (511) is larger than the shaft clip (10) and can be radially opened by the shaft clip (10).

6. The fan assembly device according to claim 1, characterized in that: The outer diameter of the guide sleeve (51) matches the lower inner diameter of the positioning sleeve (122) in the fan assembly, and the upper edge of the guide sleeve (51) is chamfered.

7. The fan assembly device according to claim 1, characterized in that: The large diameter of the stepped hole (512) is larger than the outer diameter of the rotating shaft (112).

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