CN218471799U

CN218471799U - Heat radiation structure of electric tool switch

Info

Publication number: CN218471799U
Application number: CN202222282640.9U
Authority: CN
Inventors: 王洪波
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-02-10
Anticipated expiration: 2032-08-29

Abstract

The utility model relates to an electric tool switch technical field discloses a heat radiation structure of electric tool switch, including: mounting a shell; a control circuit board disposed in the mounting case; and the heat dissipation assembly comprises a heat pipe and a heat dissipation sheet, one end of the heat pipe is connected with the control circuit board, and the other end of the heat pipe extends out of the mounting shell and is connected with the heat dissipation sheet. The utility model has the advantages of, this electric tool switch's heat radiation structure passes through the heat pipe and carries the heat that control circuit board produced outside the installation shell to dispel the heat to the heat pipe through the fin, and then continuously dispel the heat to the electric tool switch, the radiating effect is good, and reduces installation shell occupation space.

Description

Heat radiation structure of electric tool switch

Technical Field

The utility model relates to an electric tool switch technical field especially relates to a heat radiation structure of electric tool switch.

Background

At present, electric tools are widely applied to the fields of buildings, decorations, machinery, electric power and the like, a control switch is generally arranged on the electric tool, the control switch mainly comprises a shell and a control circuit board arranged in the shell, and the connection between the existing control circuit board and an external circuit is realized by directly welding a connecting wire on the control circuit board; in practical application, the control switch generates large heat during direct current speed regulation, and the generated heat is mostly sealed in the shell at first, so that the welding point of the control circuit board and the connecting wire is easy to melt or desolder, and the normal use of the control switch is further influenced.

The existing electric tool switch is usually arranged on the handle, and in order to dissipate heat of the electric tool switch, the shell is arranged in the shell or used as a heat dissipation part, so that the electric tool switch with the structure has poor heat dissipation effect, relatively large switch volume and increased handle diameter.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a heat radiation structure of electric tool switch in effectual, the rational utilization electric tool space of radiating effect is proposed to the above-mentioned not enough that prior art exists.

The utility model provides a technical scheme that its technical problem adopted is, provides a heat radiation structure of electric tool switch, including:

mounting a shell;

a control circuit board disposed in the mounting case;

and the radiating assembly comprises a heat pipe and a radiating fin, one end of the heat pipe is connected with the control circuit board, and the other end of the heat pipe extends out of the mounting shell and is connected with the radiating fin.

Furthermore, an opening is formed in the top of the mounting shell, and one end of the heat pipe penetrates through the opening to be connected with the control circuit board.

Furthermore, the opening is arranged along the length direction of the control circuit board, and the heat pipe is attached to the control circuit board along the length direction of the control circuit board.

Furthermore, one end of the heat pipe, which is connected with the control circuit board, is arranged in an arc shape.

Furthermore, a slot is arranged on the radiating fin, and one end of the heat pipe is inserted into the slot.

Further, the radiating fins are aluminum sheets.

Furthermore, the radiating fin comprises a radiating bottom plate and a plurality of radiating teeth, the radiating bottom plate is connected with the heat pipe, and the plurality of radiating teeth are arranged on the radiating bottom plate at intervals.

The push rod is telescopically arranged on the mounting shell so as to switch on or off a power supply loop of the control circuit board; the push rod and the heat pipe are respectively positioned on two adjacent sides of the mounting shell.

Furthermore, the push rod and the heat pipe are arranged vertically.

Furthermore, the mounting shell comprises a base and a cover plate which are detachably connected, the opening is arranged on the cover plate, and the control circuit board is attached to the inner wall of the cover plate; and a clamping block is arranged on one of the base and the cover plate, a clamping groove is arranged on the other of the base and the cover plate, and the clamping block is clamped in the clamping groove.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

in the utility model, the heat dissipation structure of the electric tool switch conveys the heat generated by the control circuit board to the outside of the installation shell through the heat pipe, and dissipates the heat of the heat pipe through the heat dissipation fins, so as to continuously dissipate the heat of the electric tool switch, the heat dissipation effect is good, and the space in the installation shell is not occupied; during the in-service use, a push rod for on-off control circuit board is the level and sets up on electric tool's handle, and this scheme arranges the heat pipe along the length direction of handle (vertical promptly), can be with heat transfer to the bottom of handle and dispel the heat to prevent scalding the staff, simultaneously can the corresponding diameter that reduces the handle, be convenient for grip.

Drawings

Fig. 1 is a schematic view of a heat dissipation structure of the switch of the electric tool of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a further exploded view of FIG. 2;

fig. 4 is a schematic structural view of the electric tool switch in an actual use state.

In the figure:

100. mounting a shell; 110. an opening; 120. a base; 121. a clamping block; 130. a cover plate; 131. a card slot; 200. a control circuit board; 300. a heat dissipating component; 310. a heat pipe; 320. a heat sink; 321. a slot; 322. a heat dissipation base plate; 323. a heat dissipating tooth; 324. mounting holes; 400. a push rod.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 4, a heat dissipation structure of a switch of an electric tool includes: a mounting case 100; a control circuit board 200 disposed in the mounting case 100; the heat dissipation assembly 300 includes a heat pipe 310 and a heat sink 320, wherein one end of the heat pipe 310 is connected to the control circuit board 200, and the other end of the heat pipe 310 extends out of the mounting case 100 and is connected to the heat sink 320. Specifically, the mounting case 100 is made of an insulating material, and serves as a mounting carrier for electrical components such as the control circuit board 200, etc., so as to be connected to a handle of the power tool; the control circuit board 200 is a main heating element, and heat generated by the control circuit board 200 is transported to the outside of the mounting case 100 through the heat pipe 310, so that the temperature in the mounting case 100 is reduced, and the normal operation of each component in the mounting case 100 is ensured; the heat pipe 310 can rapidly transfer the heat of the heating object to the outside of the heat source, the heat conduction capability of the heat pipe is better than that of any known metal, and the heat sink 320 is arranged at the other end of the heat pipe 310, so that the heat dissipation effect of the switch of the electric tool is improved.

In this embodiment, an opening 110 is formed at the top of the mounting case 100, and one end of the heat pipe 310 passes through the opening 110 to be connected to the control circuit board 200. That is, the opening 110 is communicated with the inside and the outside of the mounting case 100, the heat pipe 310 can seal the opening 110, and one end of the heat pipe 310 is inserted into the opening 110 and connected to the control circuit board 200, so as to discharge the heat generated by the control circuit board 200 in the mounting case 100 to the outside.

The opening 110 is disposed along a length direction of the control circuit board 200, and the heat pipe 310 is attached to the control circuit board 200 along the length direction of the control circuit board 200. In practical use, the opening 110 is a bar shape and extends from one side of the mounting case 100 to the opposite side, so that the heat pipe 310 and the control circuit board 200 have a larger contact area, and the heat dissipation efficiency is improved. Preferably, one end of the heat pipe 310, which is used for connecting with the control circuit board 200, is arranged in an arc shape, and the arc-shaped end facilitates uniform discharge of heat generated by the control circuit board 200 from the heat pipe 310.

As shown in fig. 3, the heat sink 320 is provided with a slot 321, one end of the heat pipe 310 is inserted into the slot 321, and when the heat pipe 310 outputs heat in the mounting case 100, the heat is dissipated by the heat sink 320; in actual installation, the heat sink 320 is sleeved on the heat pipe 310 through the slot 321, and the heat sink 320 is provided with the mounting hole 324, so that the heat sink 320 can be fixed by a screw. Preferably, the heat sink 320 may be made of silver, copper, aluminum, steel, etc., and the heat sink 320 of the present embodiment is an aluminum sheet, which is low in cost and has a good heat dissipation effect.

Specifically, the heat sink 320 includes a heat dissipation base plate 322 and a plurality of heat dissipation teeth 323, the heat dissipation base plate 322 is connected to the heat pipe 310, and the plurality of heat dissipation teeth 323 are arranged on the heat dissipation base plate 322 at intervals. That is, the heat dissipation base plate 322 is used to connect with the heat pipe 310, and the contact area with the air is increased by the plurality of heat dissipation teeth 323, so as to release the heat transferred from the heat pipe 310.

The heat dissipation structure of the power tool switch further comprises a push rod 400, wherein the push rod 400 is telescopically arranged on the mounting shell 100 to connect or disconnect a power supply circuit of the control circuit board 200; the push rod 400 and the heat pipe 310 are respectively located at two adjacent sides of the mounting case 100.

In practical use, the push rod 400 is used for being connected with a switch button, and the push rod 400 can be driven to stretch and retract by pressing the button so as to open or close the electric tool and regulate the speed of the electric tool. The installation shell 100 is quadrilateral, and the push rod 400 and the heat pipe 310 are respectively arranged at two adjacent sides of the installation shell 100; preferably, the push rod 400 and the heat pipe 310 are vertically arranged, that is, in an actual electric tool, the push rod 400 and the switch button are arranged on the handle, and the push rod 400 is arranged along the horizontal direction; the heat pipe 310 vertically arranged with the push rod 400 is longitudinally arranged, that is, the heat pipe 310 is arranged along the length direction of the handle, and specifically extends from the mounting shell 100 to the bottom of the handle, so that heat in the switch of the electric tool can be discharged through the bottom of the handle, and scalding of hands is avoided; and the heat pipe 310 is disposed at one side of the push rod 400, releasing the lateral space of the switch of the power tool, so that the diameter of the handle can be correspondingly reduced, facilitating the grip.

Preferably, the mounting case 100 includes a base 120 and a cover 130 detachably connected, the opening 110 is disposed on the cover 130, and the control circuit board 200 is attached to an inner wall of the cover 130; and a fixture block 121 is disposed on one of the base 120 and the cover plate 130, a slot 131 is disposed on the other of the base 120 and the cover plate, and the fixture block 121 is clamped in the slot 131. The base 120 and the cover plate 130 which are clamped with each other are convenient for installing each device in the installation shell 100, the control circuit board 200 is abutted to the cover plate 130 after being installed, the whole installation is compact, heat generated by the control circuit board 200 is directly exhausted through the heat pipe 310, and normal use of other elements in the installation shell 100 is ensured.

In this scheme, this electric tool switch's heat radiation structure, overall structure is compact, and occupation space is little, promotes the radiating efficiency through heat pipe 310 and fin 320, and carries out rational arrangement to heat pipe 310's position.

It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, the descriptions in the present application as to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions of the embodiments of the present invention can be combined with each other, but it is necessary to use a person skilled in the art to realize the basis, and when the technical solutions are combined and contradictory to each other or cannot be realized, the combination of the technical solutions should not exist, and is not within the protection scope of the present invention.

Claims

1. A heat radiation structure of electric tool switch, its characterized in that, including:

mounting a shell;

a control circuit board disposed in the mounting case;

and the heat dissipation assembly comprises a heat pipe and a heat dissipation sheet, one end of the heat pipe is connected with the control circuit board, and the other end of the heat pipe extends out of the mounting shell and is connected with the heat dissipation sheet.

2. The heat dissipating structure for a power tool switch of claim 1, wherein an opening is formed at a top of the mounting case, and one end of the heat pipe passes through the opening to be connected to the control circuit board.

3. The heat dissipating structure of the power tool switch according to claim 2, wherein the opening is disposed along a length direction of the control circuit board, and the heat pipe is attached to the control circuit board along the length direction of the control circuit board.

4. The heat dissipating structure of the power tool switch according to claim 1, wherein an end of the heat pipe, which is connected to the control circuit board, is curved.

5. The heat dissipating structure of the power tool switch according to claim 1, wherein the heat sink has a slot, and one end of the heat pipe is inserted into the slot.

6. The heat dissipating structure of an electric tool switch as claimed in claim 1, wherein the heat sink is an aluminum sheet.

7. The heat dissipating structure of a power tool switch of claim 1, wherein the heat sink includes a heat dissipating base plate and a plurality of heat dissipating teeth, the heat dissipating base plate is connected to the heat pipe, and the plurality of heat dissipating teeth are disposed on the heat dissipating base plate at intervals.

8. The heat dissipation structure of an electric tool switch as claimed in claim 1, further comprising a push rod telescopically disposed on the mounting case to connect or disconnect a power supply circuit of the control circuit board; the push rod and the heat pipe are respectively positioned on two adjacent sides of the mounting shell.

9. The heat dissipating structure of the power tool switch as claimed in claim 8, wherein the push rod is disposed perpendicular to the heat pipe.

10. The heat dissipating structure of the switch for the power tool as claimed in claim 2, wherein the mounting case includes a base and a cover plate detachably coupled to each other, the opening is provided in the cover plate, and the control circuit board is attached to an inner wall of the cover plate; and a clamping block is arranged on one of the base and the cover plate, a clamping groove is arranged on the other of the base and the cover plate, and the clamping block is clamped in the clamping groove.