A direct current stabilized power supply device and a method of using the same

Abstract

The application discloses a kind of DC voltage stabilizing power supply device and its using method, including bearing shell, the positive surface of bearing shell is fixedly installed with side plate cover, the inside of bearing shell is provided with stabilizer host computer, the inside of bearing shell is provided with the heat dissipation unit of heat dissipation to stabilizer host computer, the bottom of bearing shell inner chamber is provided with buffer assembly, the inside of bearing shell is provided with the locking assembly of stabilizer host computer and heat dissipation unit, locking assembly is used in cooperation with buffer assembly and side plate cover.The application utilizes the setting mode of bearing shell, side plate cover, stabilizer host computer, heat dissipation unit and locking assembly cooperation, locking assembly includes limiting cover, positioning assembly and clamping assembly, under the action of positioning assembly, limiting cover can be clamped locking to stabilizer host computer, and limiting cover can lock heat dissipation unit by clamping assembly at this time, and disassembly side plate cover, it can be disassembled one by one.

Description

Technical Field

[0001] This invention relates to the field of DC voltage regulation technology, and in particular to a DC voltage regulator device and its usage method. Background Technology

[0002] A DC regulated power supply is a power supply whose output voltage changes due to factors such as ambient temperature, load size, and input voltage. DC regulated power supplies typically use voltage regulators to control and transmit power. With increasing demands for fast and convenient DC regulated power supplies, they are a common type of electronic instrument.

[0003] When in use, DC regulated power supplies are usually directly and fixedly installed inside a housing, and a cooling fan is installed inside the housing to dissipate heat and protect the DC regulated power supply when it is working.

[0004] When installing DC regulated power supplies and cooling fans, they are usually fixed directly with bolts. Therefore, when disassembling and maintaining them, the side panels of the housing are usually removed, and then the bolts inside are removed one by one before the DC regulated power supply and cooling fan can be disassembled or installed. However, the space inside the housing is limited, making it inconvenient to disassemble or install them. Summary of the Invention

[0005] The purpose of this invention is to provide a DC regulated power supply device and its usage method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a DC regulated power supply device, comprising a carrier housing, a side plate cover fixedly installed on the front of the carrier housing, a voltage regulator main unit disposed inside the carrier housing, and heat dissipation units for heat dissipation of the voltage regulator main unit symmetrically arranged inside the carrier housing;

[0007] The bottom of the inner cavity of the bearing housing is provided with a buffer assembly for buffer support of the voltage regulator main unit;

[0008] The housing is equipped with a locking component for locking the voltage regulator and heat dissipation unit. The locking component works in conjunction with the buffer component and the side cover.

[0009] Preferably, the buffer component includes:

[0010] A restraint frame, the bottom of which is fixedly connected to the supporting shell;

[0011] A support plate, which is fixedly connected to the bottom of the voltage regulator main unit;

[0012] A buffer spring is disposed between the restraint frame and the bearing plate;

[0013] A guide frame is fixedly connected to the bottom of the support plate, and the guide frame is used for docking between the support plate and the restraint frame.

[0014] Preferably, the locking component includes:

[0015] A limiting cover and a rubber pad, wherein the rubber pad is fixedly connected to the inside of the limiting cover, and the limiting cover is slidably snapped onto the top of the outer wall of the voltage regulator host;

[0016] A positioning component, which is disposed on the top of the limiting cover to lock the voltage regulator main unit;

[0017] A snap-fit ​​assembly is fixedly installed on the side of the limiting cover to snap and lock the heat dissipation unit.

[0018] Preferably, the positioning component includes:

[0019] A first positioning block and a second positioning block are stacked and engaged between the limiting cover and the bearing housing. The first positioning block and the second positioning block are used to squeeze and limit the limiting cover.

[0020] A riveting rod is used to engage and limit the first positioning block and the second positioning block. The first positioning block and the second positioning block have a groove on their opposite sides that matches the riveting rod.

[0021] Preferably, the positioning component further includes:

[0022] A positioning frame is slidably engaged with the end of a rivet rod, and the end of the rivet rod is engaged with the bearing housing and the side plate cover through the positioning frame.

[0023] The first limiting member is fixedly connected to the top of the limiting cover and engages with and restrains the first positioning block.

[0024] The second limiting member is fixedly connected to the top of the inner wall of the bearing housing to engage and restrain the second positioning block, and the second limiting member and the first limiting member are arranged symmetrically on the top surface.

[0025] Preferably, the snap-fit ​​assembly includes:

[0026] A connecting plate and a first snap-fit ​​plate, wherein the first snap-fit ​​plate is disposed on one side of the limiting cover via the connecting plate;

[0027] A limiting block, which is fixedly connected to the outer wall of the heat dissipation unit;

[0028] The second snap-fit ​​plate is fixedly connected to the inner wall of the supporting housing. The second snap-fit ​​plate and the first snap-fit ​​plate are snapped together with the limiting block to lock and restrain the heat dissipation unit.

[0029] Preferably, the snap-fit ​​assembly further includes:

[0030] A tripod, which is fixedly connected to the bottom of the first snap-fit ​​plate;

[0031] A fixing bolt, which passes through the tripod and the connecting plate and is threadedly inserted into the limiting cover;

[0032] A docking block is fixedly connected to one side of the first snap-fit ​​plate, and the outer wall of the docking block is slidably snapped into the connecting plate.

[0033] Preferably, the buffer component further includes:

[0034] A support sleeve and a support rod are provided. The bottom of the support sleeve is fixedly connected to the bearing housing, the top of the support rod is fixedly connected to the bearing plate, the bottom of the outer wall of the support rod is slidably sleeved with the support sleeve, and the buffer spring is located inside the support sleeve.

[0035] A damping sleeve is fixedly sleeved on the outer wall of the guide frame, and the outer wall of the damping sleeve is slidably sleeved with the restraint frame.

[0036] The first buffer pad is fixedly connected to the bottom of the guide frame;

[0037] The second buffer pad is fixedly connected to the side of the bottom of the support plate.

[0038] The present invention also provides a method for using a DC regulated power supply device, including the following specific steps:

[0039] Step 1: When installing the voltage regulator main unit and the heat dissipation unit, place the voltage regulator main unit on the restraint frame, so that the support rod at the bottom of the bearing plate is slidably engaged with the support sleeve, thereby squeezing the buffer spring by the support rod, and then slidably engaging the limiting block at the bottom of the heat dissipation unit with the second snap-fit ​​plate on the inner wall of the bearing housing.

[0040] Step 2: Use the limiting cover to lock and secure the voltage regulator main unit. That is, put the limiting cover on the top of the outer wall of the voltage regulator main unit and press the limiting cover downward, so that the limiting cover drives the connecting plate and the first locking plate to descend, thereby locking the first locking plate into the limiting block at the top of the heat dissipation unit. Then, the first positioning block and the second positioning block are docked and locked between the limiting cover and the bearing housing, and the riveting rod is inserted between the slots of the first positioning block and the second positioning block.

[0041] Step 3: Install and fix the side panel cover. After the side panel cover is installed and fixed, the positioning frame on the back of the side panel cover will engage and restrain the rivet rod, so that the rivet rod, the first positioning block and the second positioning block are in a stable state and engage and restrain the limit cover.

[0042] The technical effects and advantages of this invention are as follows:

[0043] (1) The present invention utilizes a combination of a bearing housing, a side cover, a voltage regulator host, a heat dissipation unit and a locking component. The locking component includes a limiting cover, a positioning component and a snap-fit ​​component. Under the action of the positioning component, the limiting cover can snap-fit ​​and lock the voltage regulator host. At this time, the limiting cover can lock the heat dissipation unit through the snap-fit ​​component. And by removing the side cover, it can be disassembled one by one.

[0044] (2) The present invention utilizes the combination of voltage regulator host and buffer assembly. The buffer assembly includes a restraint frame, a bearing plate, a buffer spring and a guide frame. When the voltage regulator host is installed, the buffer spring is in a compressed state. The buffer spring can provide buffer support and protection for the voltage regulator host. The damping sleeve outside the guide frame can improve the stability of the buffer spring's buffering of the voltage regulator host. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0046] Figure 2 This is a schematic diagram of the internal structure of the side of the present invention.

[0047] Figure 3 This is a schematic diagram of the internal structure of the front of the present invention.

[0048] Figure 4 This is a schematic diagram of the exploded structure at the first positioning block of the present invention.

[0049] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0050] Figure 6 This is a schematic diagram of the internal structure of the restraint frame portion of the present invention.

[0051] In the diagram: 1. Bearing housing; 2. Side plate cover; 3. Voltage regulator main unit; 4. Heat dissipation unit; 5. Buffer assembly; 51. Restraint frame; 52. Bearing plate; 53. Buffer spring; 54. Guide frame; 55. Support sleeve; 56. Support rod; 57. Damping sleeve; 58. First buffer pad; 59. Second buffer pad; 6. Locking assembly; 61. Limiting cover; 63. Positioning assembly; 631. First positioning block; 632. Second positioning block; 633. Riveting rod; 634. Slot; 635. Positioning frame; 636. First limiting component; 637. Second limiting component; 64. Snap-fit ​​assembly; 641. Connecting plate; 642. First snap-fit ​​plate; 643. Limiting block; 644. Second snap-fit ​​plate; 645. Tripod; 646. Fixing bolt; 65. Rubber pad. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] This invention provides, for example Figure 1-6 The DC regulated power supply device shown includes a housing 1, a side cover 2 fixedly mounted on the front of the housing 1, a voltage regulator 3 disposed inside the housing 1, and heat dissipation units 4 symmetrically arranged inside the housing 1 for cooling the voltage regulator 3. The heat dissipation unit 4 consists of a frame and a cooling fan, with the cooling fan fixedly mounted inside the frame. A buffer assembly 5 for buffering and supporting the voltage regulator 3 is disposed at the bottom of the inner cavity of the housing 1. A locking assembly 6 for locking the voltage regulator 3 and the heat dissipation units 4 is disposed inside the housing 1. The locking assembly 6 works in conjunction with the buffer assembly 5 and the side cover 2. The side cover 2 is fixedly installed by bolts. When the side cover 2 is fixedly installed, it can lock the locking assembly 6, thereby ensuring the stability of the locking assembly 6 in locking the voltage regulator 3. Furthermore, by removing the side cover 2, the locking assembly 6 can be disassembled, thereby disassembling the voltage regulator 3.

[0054] Furthermore, the locking component 6 includes a limiting cover 61 and a rubber pad 65. The rubber pad 65 is fixedly connected to the inside of the limiting cover 61. The rubber pad 65 can buffer and protect the voltage regulator host 3, preventing the voltage regulator host 3 from rigidly colliding with the limiting cover 61 after its reset movement following a buffer descent. The limiting cover 61 is slidably snapped onto the top of the outer wall of the voltage regulator host 3. The positioning component 63 is set on the top of the limiting cover 61 to lock the voltage regulator host 3. Under the limitation of the positioning component 63, the limiting cover 61 can be snapped and locked onto the voltage regulator host 3, and at this time, the buffer spring 53 is in a compressed state, thereby ensuring the stability of the voltage regulator host 3 installation. The snap-fit ​​component 64 can lock the heat dissipation unit 4, and after removing the limiting cover 61, the snap-fit ​​component 64 can be removed, thereby removing the heat dissipation unit 4. The snap-fit ​​component 64 is fixedly installed on the side of the limiting cover 61 to snap and lock the heat dissipation unit 4.

[0055] In particular, the positioning component 63 includes a first positioning block 631 and a second positioning block 632, which are stacked and engaged between the limiting cover 61 and the supporting housing 1. The first positioning block 631 and the second positioning block 632 are used to compress and limit the limiting cover 61, such as... Figure 3As shown, the first positioning block 631 and the second positioning block 632 are stacked vertically, which can compress and limit the limiting cover 61. Under the action of the riveting rod 633, they can be prevented from sliding apart. Under the action of the first limiting member 636 and the second limiting member 637, the first positioning block 631 and the second positioning block 632 can be locked together again, preventing them from sliding on the limiting cover 61. After removing the side cover 2 and taking off the riveting rod 633, and because the second limiting member 637 and the first limiting member 636 are symmetrically arranged, the first positioning block 631 and the second positioning block 632 can slide apart in opposite directions. That is, the first positioning block 631 slides apart towards the opening of the first limiting member 636, and the second positioning block 632 slides apart towards the opening of the second limiting member 637. After removing the first positioning block 631 and the second positioning block 632, the limiting cover 61 can be slid off, thereby releasing the voltage regulator host. The voltage regulator host 3 and the heat dissipation unit 4 are disassembled by the locking state of the limit cover 61 and the locking assembly 64. The riveting rod 633 is used to lock and limit the first positioning block 631 and the second positioning block 632. The first positioning block 631 and the second positioning block 632 have a slot 634 that matches the riveting rod 633 on the opposite side. The positioning assembly 63 also includes a positioning frame 635, which is slidably locked onto the riveting rod 63. At the end of 3, the end of the riveting rod 633 is engaged with the bearing housing 1 and the side plate cover 2 through the positioning frame 635. The first limiting member 636 is fixedly connected to the top of the limiting cover 61 to engage and restrain the first positioning block 631. The second limiting member 637 is fixedly connected to the top of the inner wall of the bearing housing 1 to engage and restrain the second positioning block 632. The second limiting member 637 and the first limiting member 636 are arranged symmetrically on the top and form a door shape.

[0056] Furthermore, the snap-fit ​​assembly 64 includes a connecting plate 641 and a first snap-fit ​​plate 642. The first snap-fit ​​plate 642 is disposed on one side of the limiting cover 61 via the connecting plate 641. Multiple limiting blocks 643 are fixedly connected to the top and bottom of the heat dissipation unit 4, respectively. The limiting blocks 643 are fixedly connected to the outer wall of the heat dissipation unit 4. The second snap-fit ​​plate 644 can support and restrain the heat dissipation unit 4, and the first snap-fit ​​plate 642 can snap-fit ​​and restrain the top of the heat dissipation unit 4. Therefore, after removing the limiting cover 61, the first snap-fit ​​plate 642 can be separated from the heat dissipation unit 4, allowing for disassembly, cleaning, and maintenance of the heat dissipation unit 4. The second snap-fit ​​plate 644 is fixedly connected... The second snap-fit ​​plate 644 and the first snap-fit ​​plate 642 are attached to the inner wall of the bearing housing 1, and snap-fit ​​with the limiting block 643 to lock and bind the heat dissipation unit 4. The snap-fit ​​assembly 64 also includes a tripod 645, which is fixedly connected to the bottom of the first snap-fit ​​plate 642. The fixing bolt 646 passes through the tripod 645 and the connecting plate 641 and is threadedly inserted into the limiting cover 61. The mating block, the tripod 645 and the fixing bolt 646 can fix the first snap-fit ​​plate 642 and the connecting plate 641 to the side of the limiting cover 61. The mating block is fixedly connected to one side of the first snap-fit ​​plate 642, and the outer wall of the mating block is slidably snapped with the connecting plate 641.

[0057] Furthermore, the buffer assembly 5 includes a restraint frame 51, the bottom of which is fixedly connected to the bearing housing 1. A bearing plate 52 is fixedly connected to the bottom of the voltage regulator host 3. A buffer spring 53 is disposed between the restraint frame 51 and the bearing plate 52. The buffer spring 53 can provide an elastic buffering force to the bearing plate 52 via the support rod 56, thereby providing buffer protection for the voltage regulator host 3. A guide frame 54 ensures the stability of the connection between the bearing plate 52 and the restraint frame 51. The guide frame 54 is fixedly connected to the bottom of the bearing plate 52 and is used for the connection between the bearing plate 52 and the restraint frame 51. The buffer assembly 5 also includes a support sleeve 55 and a support rod 56. The bottom of the support sleeve 55 is fixedly connected to the bearing housing 1, and the top of the support rod 56 is fixedly connected to the bearing plate 52. The bottom of the outer wall of the support rod 56 is slidably sleeved with the support sleeve 55, and the buffer spring 53 is located inside the support sleeve 55. A damping sleeve 57 can absorb the frictional resistance between the guide frame 54 and the restraint frame 51, thereby... To improve the stability of the buffer spring 53 in buffering the voltage regulator host 3, the damping sleeve 57 is fixedly sleeved on the outer wall of the guide frame 54, and the outer wall of the damping sleeve 57 is slidably sleeved with the restraint frame 51. The distance between the bottom of the first buffer pad 58 and the bottom of the inner wall of the bearing housing 1 is the same as the distance between the second buffer pad 59 and the restraint frame 51, and the distance between them is less than the depth of the inner cavity of the limiting cover 61. This can prevent the voltage regulator host 3 and the bearing plate 52 from falling and buffering, so that the distance they fall is less than the depth of the inner wall of the limiting cover 61. The voltage regulator host 3 descends and separates from the limiting cover 61, which can further buffer the support plate 52. That is, when the voltage regulator host 3 and the support plate 52 are impacted and descend, the bottom of the first buffer pad 58 is released from the inner wall of the support housing 1, and the bottom of the second buffer pad 59 is released from the top of the restraint frame 51. It can further buffer and protect the voltage regulator host 3 and the support plate 52. The first buffer pad 58 is fixedly connected to the bottom of the guide frame 54, and the second buffer pad 59 is fixedly connected to the side of the bottom of the support plate 52.

[0058] The present invention also provides a method for using a DC regulated power supply device, including the following specific steps:

[0059] Step 1: When installing the voltage regulator host 3 and the heat dissipation unit 4, place the voltage regulator host 3 on the restraint frame 51, so that the support rod 56 at the bottom of the bearing plate 52 is slidably connected to the support sleeve 55, thereby causing the support rod 56 to compress the buffer spring 53, and then slidably engage the limiting block 643 at the bottom of the heat dissipation unit 4 with the second snap-fit ​​plate 644 on the inner wall of the bearing housing 1.

[0060] Step 2: Use the limiting cover 61 to lock and bind the voltage regulator host 3. That is, put the limiting cover 61 on the top of the outer wall of the voltage regulator host 3 and press the limiting cover 61 downward, so that the limiting cover 61 drives the connecting plate 641 and the first locking plate 642 to descend, thereby locking the first locking plate 642 into the limiting block 643 at the top of the heat dissipation unit 4. Then, the first positioning block 631 and the second positioning block 632 are connected and locked between the limiting cover 61 and the bearing housing 1, and the riveting rod 633 is inserted between the slots 634 between the first positioning block 631 and the second positioning block 632.

[0061] Step 3: Install and fix the side panel cover 2. After the side panel cover 2 is installed and fixed, the positioning frame 635 on the back of the side panel cover 2 engages and binds the rivet rod 633, so that the rivet rod 633, the first positioning block 631 and the second positioning block 632 are in a stable state and engage and bind the limit cover 61.

[0062] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A DC regulated power supply device, comprising a carrier housing (1), a side plate cover (2) fixedly installed on the front of the carrier housing (1), a voltage regulator host (3) disposed inside the carrier housing (1), and heat dissipation units (4) symmetrically disposed inside the carrier housing (1) for dissipating heat from the voltage regulator host (3). Its features are: The bottom of the inner cavity of the bearing housing (1) is provided with a buffer assembly (5) that provides buffer support for the voltage regulator host (3). The housing (1) is equipped with a locking assembly (6) for locking the voltage regulator main unit (3) and the heat dissipation unit (4). The locking assembly (6) works in conjunction with the buffer assembly (5) and the side cover (2). The locking assembly (6) includes: Limiting cover (61) and rubber pad (65), the rubber pad (65) is fixedly connected to the inside of the limiting cover (61), and the limiting cover (61) is slidably snapped onto the top of the outer wall of the voltage regulator host (3); Positioning component (63), which is located on the top of the limiting cover (61) to lock the voltage regulator host (3); The snap-fit ​​assembly (64) is fixedly installed on the side of the limiting cover (61) to snap and lock the heat dissipation unit (4).

2. The DC regulated power supply device according to claim 1, characterized in that, The buffer component (5) includes: A restraint frame (51) is fixedly connected at its bottom to the bearing housing (1); The support plate (52) is fixedly connected to the bottom of the voltage regulator host (3); A buffer spring (53) is disposed between the restraint frame (51) and the bearing plate (52); A guide frame (54) is fixedly connected to the bottom of the support plate (52) and is used for docking the support plate (52) with the restraint frame (51).

3. The DC regulated power supply device according to claim 2, characterized in that, The positioning component (63) includes: The first positioning block (631) and the second positioning block (632) are stacked and snapped between the limiting cover (61) and the bearing housing (1). The first positioning block (631) and the second positioning block (632) are used to squeeze and limit the limiting cover (61). The riveting rod (633) is used to engage and limit the first positioning block (631) and the second positioning block (632). The first positioning block (631) and the second positioning block (632) have a groove (634) that matches the riveting rod (633) on opposite sides.

4. The DC regulated power supply device according to claim 3, characterized in that, The positioning component (63) further includes: A positioning frame (635) is slidably engaged with the end of a riveting rod (633), and the end of the riveting rod (633) is engaged with the bearing housing (1) and the side plate cover (2) through the positioning frame (635). The first limiting member (636) is fixedly connected to the top of the limiting cover (61) and engages and restrains the first positioning block (631); The second limiting member (637) is fixedly connected to the top of the inner wall of the bearing housing (1) to engage and restrain the second positioning block (632), and the second limiting member (637) and the first limiting member (636) are arranged symmetrically on the top surface.

5. A DC regulated power supply device according to claim 4, characterized in that, The snap-fit ​​assembly (64) includes: A connecting plate (641) and a first snap-fit ​​plate (642), wherein the first snap-fit ​​plate (642) is disposed on one side of the limiting cover (61) via the connecting plate (641); Limiting block (643), the limiting block (643) is fixedly connected to the outer wall of heat dissipation unit (4); The second snap-fit ​​plate (644) is fixedly connected to the inner wall of the bearing housing (1). The second snap-fit ​​plate (644) and the first snap-fit ​​plate (642) are snapped together with the limiting block (643) to snap and restrain the heat dissipation unit (4).

6. A DC regulated power supply device according to claim 5, characterized in that, The snap-fit ​​assembly (64) further includes: A tripod (645) is fixedly connected to the bottom of a first snap-fit ​​plate (642); A fixing bolt (646) passes through the tripod (645) and the connecting plate (641) and is threadedly connected to the limiting cover (61); A docking block is fixedly connected to one side of the first snap-fit ​​plate (642), and the outer wall of the docking block is slidably snapped into the connecting plate (641).

7. A DC regulated power supply device according to claim 2, characterized in that, The buffer component (5) further includes: The support sleeve (55) and the support rod (56) are provided. The bottom of the support sleeve (55) is fixedly connected to the bearing housing (1), the top of the support rod (56) is fixedly connected to the bearing plate (52), the bottom of the outer wall of the support rod (56) is slidably sleeved with the support sleeve (55), and the buffer spring (53) is located inside the support sleeve (55). Damping sleeve (57), the damping sleeve (57) is fixedly sleeved on the outer wall of the guide frame (54), and the outer wall of the damping sleeve (57) is slidably sleeved with the restraint frame (51). The first buffer pad (58) is fixedly connected to the bottom of the guide frame (54); The second buffer pad (59) is fixedly connected to the side of the bottom of the support plate (52).

8. A method of using a DC regulated power supply device according to any one of claims 1-7, characterized in that, The specific usage steps are as follows: Step 1: When installing the voltage regulator host (3) and the heat dissipation unit (4), place the voltage regulator host (3) on the restraint frame (51), so that the support rod (56) at the bottom of the bearing plate (52) is slidably connected to the support sleeve (55), so that the support rod (56) squeezes the buffer spring (53), and then the limiting block (643) at the bottom of the heat dissipation unit (4) is slidably connected to the second snap-fit ​​plate (644) on the inner wall of the bearing housing (1); Step 2: Use the limiting cover (61) to clamp and bind the voltage regulator host (3), that is, put the limiting cover (61) on the top of the outer wall of the voltage regulator host (3), and squeeze the limiting cover (61) downward, so that the limiting cover (61) drives the connecting plate (641) and the first clamping plate (642) to descend, so that the first clamping plate (642) is clamped to the limiting block (643) at the top of the heat dissipation unit (4). Then, the first positioning block (631) and the second positioning block (632) are clamped between the limiting cover (61) and the bearing housing (1), and the riveting rod (633) is inserted between the slot (634) between the first positioning block (631) and the second positioning block (632). Step 3: Install and fix the side cover (2). After the side cover (2) is installed and fixed, the positioning frame (635) on the back of the side cover (2) clamps and binds the rivet rod (633), so that the rivet rod (633), the first positioning block (631) and the second positioning block (632) are in a stable state and clamp and bind the limit cover (61).

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