Electric tool controller

Abstract

The utility model belongs to the technical field of electric tool controllers, and discloses an electric tool controller which comprises a shell, a circuit board is arranged in the shell, the top of the shell is connected with a top cover through a bolt, a heat dissipation assembly is installed on the shell, telescopic guide-out rods are evenly distributed in the shell, and the telescopic guide-out rods are connected with the circuit board through bolts. The heat dissipation assembly comprises a heat exchange pipe, the top end of the heat exchange pipe penetrates through the circuit board and is connected with an air guide cover, the air guide cover is arranged on the top cover, the bottom end of the heat exchange pipe penetrates through the shell, the bottom of the shell is fixedly connected with a fixing frame, and the bottom end of the heat exchange pipe extends into the inner side of the fixing frame. The heat dissipation fan is installed in the fixing frame, heat exchange is carried out through the heat exchange pipe and the interior of the shell, external dust is prevented from entering and being attached to the circuit board, the heat dissipation fan drives air in the heat exchange pipe to flow, heat in the heat exchange pipe is led out rapidly, and heat dissipation work can be carried out continuously.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric tool controllers, in particular to an electric tool controller. Background Art

[0002] As the core component of the power tool, the installation of the power tool controller requires good stability and heat dissipation performance to ensure the normal operation of the power tool. In the prior art, the power tool controller is installed by directly fixing the circuit board inside the shell by locking screws, resulting in poor heat dissipation performance.

[0003] A Chinese patent application with application number 201821361939.0 discloses an electric tool controller. By adding a heat conducting plate between the outer shell and the circuit board, the heat in the inner cavity of the outer shell is transferred to the shell wall through the heat conducting plate, thereby further improving the heat dissipation efficiency of the circuit board and ensuring the normal operation of the circuit board. However, the electric tool controller has the following deficiencies: the lack of air flow results in a slow heat dissipation efficiency, and the air circulation causes dust to accumulate on the circuit board, affecting the use of the circuit board.

[0004] Therefore, in view of the above problems, an electric tool controller is proposed. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides an electric tool controller, which has the advantages of improving heat dissipation efficiency, avoiding dust adhesion, and facilitating maintenance.

[0006] To achieve the above object, the utility model provides the following technical solutions: an electric tool controller, comprising a housing, a circuit board is arranged in the housing, a top cover is connected to the top of the housing by bolts, a heat dissipation assembly is installed on the housing, and evenly distributed telescopic lead-out rods are arranged in the housing, and the top of the telescopic lead-out rods is connected to the circuit board;

[0007] The heat dissipation component includes a heat exchange tube, through which heat is exchanged with the inside of the shell to prevent external dust from entering and adhering to the circuit board. The top end of the heat exchange tube passes through the circuit board and is connected to an air guide cover, which is arranged on the top cover. The bottom end of the heat exchange tube passes through the shell, and a fixed frame is fixedly connected to the bottom of the shell. The bottom end of the heat exchange tube extends into the inside of the fixed frame. A heat dissipation fan is installed in the fixed frame. The heat dissipation fan drives the flow of air inside the heat exchange tube to quickly extract the heat inside the heat exchange tube for continuous heat dissipation.

[0008] Preferably, a pressing rod is fixedly connected to the bottom of the top cover, and a rubber head is provided at the end of the pressing rod.

[0009] Preferably, a through groove is provided at a position on the circuit board corresponding to the heat exchange tube, and the heat exchange tube passes through the through groove.

[0010] Preferably, the telescopic export rod includes a fixed shell, a movable plate is provided inside the fixed shell, the bottom of the movable plate is connected to a spring, the top of the movable plate is connected to a movable rod, the top of the movable rod passes through the fixed shell to connect to the circuit board, and after opening the top cover, the circuit board inside the shell will be pushed out of the shell by the telescopic export rod to facilitate the inspection of the circuit board.

[0011] Preferably, both the inner wall and the outer surface of the heat exchange tube are provided with heat conducting fins to increase the rate of heat transfer.

[0012] Preferably, dustproof nets are provided inside the air guide cover and at the bottom of the fixing frame to prevent the entry of external dust and to prevent dust adhesion from affecting heat transfer.

[0013] Preferably, a sealing ring is provided on the outer surface of the bottom end of the air guide cover, the bottom end of the air guide cover extends into the heat exchange tube, and the sealing ring is tightly attached to the inner wall of the heat exchange tube.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model sets a heat dissipation component, and its structure exchanges heat with the inside of the shell through the heat exchange tube to prevent external dust from entering and adhering to the circuit board. The heat dissipation fan drives the flow of air inside the heat exchange tube, so that the heat inside the heat exchange tube is quickly discharged, so as to continuously perform heat dissipation work;

[0016] 2. The utility model provides a telescopic lead-out rod, which is arranged at the bottom of the circuit board. The circuit board is installed in the shell. The circuit board is pressed down by the top cover. After the top cover is opened, the circuit board inside the shell will be pushed out of the shell by the telescopic lead-out rod, so as to facilitate the maintenance of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the bottom structure of the top cover of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the heat exchange tube of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the telescopic lead-out rod of the utility model.

[0022] In the figure: 1. Shell; 2. Circuit board; 3. Bolts; 4. Top cover;

[0023] 5. heat dissipation assembly; 51. heat exchange tube; 52. air guide cover; 53. fixing frame; 54. heat dissipation fan;

[0024] 6. telescopic lead-out rod; 61. fixed housing; 62. movable plate; 63. spring; 64. movable rod;

[0025] 7. Downward pressure rod; 8. Rubber head; 9. Through groove; 10. Heat conducting fin; 11. Dustproof net; 12. Sealing ring. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention;

[0027] like Figures 1 to 5 As shown, the utility model provides an electric tool controller, including a shell 1, a circuit board 2 is arranged in the shell 1, a top cover 4 is connected to the top of the shell 1 by bolts 3, a heat dissipation component 5 is installed on the shell 1, heat is exchanged with the inside of the shell 1 through a heat exchange tube 51, so as to prevent external dust from entering and adhering to the circuit board 2, and a heat dissipation fan 54 drives the flow of air inside the heat exchange tube 51, so that the heat inside the heat exchange tube 51 is quickly discharged, so as to continuously perform heat dissipation work, evenly distributed telescopic lead-out rods 6 are arranged in the shell 1, and the top of the telescopic lead-out rod 6 is connected to the circuit board 2, the circuit board 2 is installed in the shell 1, and the circuit board 2 is pressed down by the top cover 4. After opening the top cover 4, the circuit board 2 inside the shell 1 will be pushed out of the shell 1 by the telescopic lead-out rod 6, so as to facilitate the maintenance of the circuit board 2;

[0028] The heat dissipation assembly 5 includes a heat exchange tube 51. The top end of the heat exchange tube 51 passes through the circuit board 2 and is connected to an air guide cover 52. The air guide cover 52 is arranged on the top cover 4. The bottom end of the heat exchange tube 51 passes through the outer shell 1. The bottom of the outer shell 1 is fixedly connected to a fixing frame 53. The bottom end of the heat exchange tube 51 extends into the inner side of the fixing frame 53. A heat dissipation fan 54 is installed in the fixing frame 53.

[0029] Specifically, a pressing rod 7 is fixedly connected to the bottom of the top cover 4, and a rubber head 8 is provided at the end of the pressing rod 7. When the top cover 4 is fixed to the top of the outer shell 1 by means of the bolts 3, the pressing rod 7 will press the circuit board 2 down into the outer shell 1, leaving a gap between the circuit board 2 and the top cover 4. The rubber head 8 can prevent the pressing rod 7 from damaging the circuit board 2.

[0030] Furthermore, a through groove 9 is provided at a position on the circuit board 2 corresponding to the heat exchange tube 51 , and the heat exchange tube 51 passes through the through groove 9 .

[0031] Furthermore, the telescopic export rod 6 includes a fixed shell 61, a movable plate 62 is provided in the fixed shell 61, the bottom of the movable plate 62 is connected to a spring 63, the top of the movable plate 62 is connected to a movable rod 64, and the top of the movable rod 64 passes through the fixed shell 61 to connect to the circuit board 2.

[0032] It is worth noting that the inner wall and outer surface of the heat exchange tube 51 are both provided with heat conducting fins 10 , which increase the contact area between the heat exchange tube 51 and the air, facilitate the rapid transfer of heat, and facilitate the transfer of heat inside the shell 1 to the inside of the heat exchange tube 51 .

[0033] It is worth noting that dustproof nets 11 are provided inside the air guide cover 52 and at the bottom of the fixing frame 53 to prevent dust and the like from entering the heat exchange tube 51, so as to avoid dust accumulation affecting heat transfer.

[0034] It is worth mentioning that a sealing ring 12 is provided on the outer surface of the bottom end of the air guide cover 52, and the bottom end of the air guide cover 52 extends into the heat exchange tube 51. The sealing ring 12 is close to the inner wall of the heat exchange tube 51. The air guide cover 52 is movably connected to the heat exchange tube 51 to facilitate the removal of the top cover 4.

[0035] Among them, the heat dissipation fan 54 is a prior art and will not be described in detail; at the same time, the utility model also includes a power supply, a controller and a switch, which are not the main technical points of this patent and will not be described in detail.

[0036] Working principle and process: The heat exchange tube 51 runs through the inner cavity of the shell 1, and the heat generated by the circuit board 2 is transferred to the heat exchange tube 51. Part of the heat accumulates in the heat exchange tube 51. The cooling fan 54 is started, and the air starts to flow. The air inside the heat exchange tube 51 is quickly introduced into the external environment to take away the hot air inside the heat exchange tube 51, and the heat in the shell 1 will be transferred to the heat exchange tube 51 more quickly. The heat-conducting fins 10 provided on the heat exchange tube 51 are conducive to improving the efficiency of heat transfer. When the circuit board 2 needs to be repaired, the bolts 3 on the top cover 4 are unscrewed, and the spring 63 in the telescopic lead-out rod 6 is extended, thereby squeezing the movable rod upward. Plate 62 can push the movable rod 64 to drive the circuit board 2 to move up, so as to push the circuit board 2 out of the inner cavity of the shell 1, so as to facilitate the staff to repair the circuit board 2. During installation, the top cover 4 is placed above the circuit board 2, and the pressing rod 7 fixedly connected to the bottom of the top cover 4 contacts the corresponding position on the top of the circuit board 2. Press the top cover 4 downward, and the pressing rod 7 can press the circuit board 2 downward. At this time, the spring 63 of the telescopic lead-out rod 6 is compressed until the circuit board 2 is in the inner cavity of the shell 1 and the bottom of the top cover 4 contacts the top of the shell 1. At this time, install the bolt 3 on the top cover 4 and make the bolt 3 threadedly connected to the shell 1 to complete the installation.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power tool controller, comprising a housing (1), characterized in that: A circuit board (2) is arranged inside the housing (1); a top cover (4) is connected to the top of the housing (1) via bolts (3); a heat dissipation assembly (5) is installed on the housing (1); evenly distributed telescopic lead-out rods (6) are arranged inside the housing (1); the top ends of the telescopic lead-out rods (6) are connected to the circuit board (2); The heat dissipation assembly (5) comprises a heat exchange tube (51), the top end of the heat exchange tube (51) passes through the circuit board (2) and is connected to an air guide cover (52), the air guide cover (52) is arranged on the top cover (4), the bottom end of the heat exchange tube (51) passes through the outer shell (1), the bottom of the outer shell (1) is fixedly connected to a fixing frame (53), the bottom end of the heat exchange tube (51) extends into the inner side of the fixing frame (53), and a heat dissipation fan (54) is installed in the fixing frame (53).

2. The electric tool controller according to claim 1, characterized in that: A pressing rod (7) is fixedly connected to the bottom of the top cover (4), and a rubber head (8) is provided at the end of the pressing rod (7).

3. The electric tool controller according to claim 1, characterized in that: A through groove (9) is provided at a position on the circuit board (2) corresponding to the heat exchange tube (51), and the heat exchange tube (51) passes through the through groove (9).

4. The electric tool controller according to claim 1, characterized in that: The telescopic lead-out rod (6) comprises a fixed housing (61), a movable plate (62) is arranged inside the fixed housing (61), a spring (63) is connected to the bottom of the movable plate (62), a movable rod (64) is connected to the top of the movable plate (62), and the top end of the movable rod (64) passes through the fixed housing (61) to connect to the circuit board (2).

5. The electric tool controller according to claim 1, characterized in that: Heat-conducting fins (10) are provided on the inner wall and the outer surface of the heat exchange tube (51).

6. The electric tool controller according to claim 1, characterized in that: Dust-proof nets (11) are provided inside the air guide cover (52) and at the bottom of the fixing frame (53).

7. The electric tool controller according to claim 1, characterized in that: A sealing ring (12) is provided on the outer surface of the bottom end of the air guide cover (52), the bottom end of the air guide cover (52) extends into the heat exchange tube (51), and the sealing ring (12) is in close contact with the inner wall of the heat exchange tube (51).

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