Heat dissipation structure of electric tool switch
By using a modularly designed heat dissipation structure and a combination of detachable and adjustable heat sinks and coolant, the problem of low heat dissipation efficiency in traditional power tool switches is solved, achieving efficient heat dissipation and stable operation of components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional power tool switches have inefficient heat dissipation methods, which are particularly difficult to ensure the stable operation of electronic components in high-temperature or enclosed environments, and the number or location of heat dissipation modules cannot be adjusted according to working conditions.
A modular heat dissipation structure was designed, including detachable and adjustable heat dissipation components. The internal cavity contains a cavity and a thin tube. Heat exchange is carried out using a heat dissipation fluid. Heat is transferred to the exchange channel through capillary action and discharged through the heat sink. The heat dissipation components can be added or removed and the gap can be adjusted according to needs.
It achieves flexible heat dissipation adjustment, adapts to different working environments, improves heat dissipation efficiency, ensures stable operation of electronic components, and avoids problems caused by insufficient or redundant heat dissipation.
Smart Images
Figure CN224053043U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of electric tool switches, in particular to a heat dissipation structure of an electric tool switch. BACKGROUND
[0002] Electronic components such as resistors, transistors and integrated circuits in the switch of an electric tool generate a certain amount of heat, and excessive heat accumulation in the switch shell can cause the electronic components to age and degrade in performance, and even cause a fire.
[0003] Traditional electric tool switches generally have fixed shells, and the heat dissipation mode of the electric tool switch depends on natural cooling or simple fin design. These modes have certain limitations in terms of heat dissipation efficiency, especially in high-temperature or closed working environments, the heat dissipation effect is poor, it is difficult to effectively ensure the stable operation of the electronic component assembly, and the number or position of the heat dissipation modules cannot be adjusted according to the working conditions, resulting in heat dissipation redundancy or deficiency.
[0004] The above content is only used to assist in understanding the technical solutions of the application, and does not represent the acknowledgement of the above content as the closest prior art to the application. SUMMARY
[0005] Therefore, the application provides a heat dissipation structure of an electric tool switch to solve one of the above technical problems.
[0006] The technical scheme adopted by the application to solve the technical problems is: a heat dissipation structure of an electric tool switch, comprising: a shell and an electronic component assembly, the electronic component assembly is provided with an operating button for operating the on-off of the electric tool switch, the shell is symmetrically provided with a mounting groove on both sides, a plurality of heat dissipation pieces are slidably arranged in the mounting groove, the heat dissipation pieces can be removed or added on the shell according to actual needs, a cavity is formed in the heat dissipation piece, a heat dissipation liquid is encapsulated in the cavity, a plurality of fine tubes are arranged on the side of the heat dissipation piece close to the electronic component assembly, an exchange channel in communication with the cavity is formed in the fine tube, the fine tube is in contact with the electronic component assembly, the position of the heat dissipation piece sliding in the mounting groove can be fixed, and the spacing between the two heat dissipation pieces can be adjusted.
[0007] In some embodiments, the mounting groove divides a mounting plate from the shell, a plurality of open grooves are arranged on the mounting plate, and the shell and the mounting plate are made of iron.
[0008] In some embodiments, a pair of sliding blocks is extended from each side of the heat dissipation piece, and the heat dissipation piece is detachably mounted on the shell by sliding the sliding blocks in the mounting groove.
[0009] In some embodiments, a magnet rod matching the opening slot is placed in the opening slot, and the magnet rod is used to fix the position of the heat dissipation member in the mounting slot.
[0010] In some embodiments, a plurality of partition plates are formed inside the cavity, and the partition plates are parallel to each other and arrayed along the height direction of the cavity.
[0011] In some embodiments, the partition plates are downwardly concave arc-shaped plates, and the plurality of partition plates separate the cavity into a plurality of independent chambers.
[0012] In some embodiments, a plurality of heat dissipation fins are arrayed on the outer side of the heat dissipation member.
[0013] In some embodiments, the thin tube includes a first segment and a second segment, the first segment extends vertically from the heat dissipation member, and the second segment extends vertically upward from the end of the first segment.
[0014] The application has the following beneficial effects:
[0015] 1. The heat dissipation member is designed in a modular manner, and can be freely added or removed on the shell of the switch. The number of heat dissipation members and the gap therebetween can be adaptively adjusted according to the working environment of the switch, and the flexibility is high.
[0016] 2. The heat dissipation member is internally formed with a cavity, the cavity is separated by a partition plate into a plurality of chambers, the chambers are filled with heat dissipation liquid, and the cavity is communicated with a thin tube. The thin tube absorbs the heat dissipation liquid into the exchange channel through capillary action. After the thin tube absorbs the heat of the electronic components, the heat dissipation liquid in the exchange channel exchanges heat with the heat dissipation liquid in the cavity. The heat dissipation liquid in the cavity is discharged through the heat dissipation fins, and the heat dissipation effect is good. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0018] Figure 1 is a perspective view of the present application.
[0019] Figure 2 is a cross-sectional view of the present application.
[0020] Figure 3 is a Figure 2 enlarged view of A of the present application.
[0021] Figure 4 is a schematic view of the heat dissipation member of the present application.
[0022] Figure 5 is the internal structure diagram of the heat dissipation member of the present application.
[0023] Brief Description of Drawings: 1, the shell, 2, electronic component assembly, 3, operating button, 4, mounting groove, 5, heat dissipation member, 6, heat dissipation liquid, 7, thin tube, 701, first section, 702, second section, 8, exchange channel, 9, mounting plate, 10, open slot, 11, slider, 12, magnet bar, 13, partition plate, 14, cavity, 15, heat dissipation fin. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on that a person of ordinary skill in the art can realize, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.
[0025] In the embodiments of the present application, please refer to Figures 1-5 The heat dissipation structure of the electric tool switch mainly comprises a shell 1 and an electronic component assembly 2. An operating button 3 for operating the on-off of the electric tool switch is arranged on the electronic component assembly 2. Mounting grooves 4 are symmetrically formed on both sides of the shell 1. A plurality of heat dissipation members 5 are slidably arranged in the mounting grooves 4. The heat dissipation members 5 can be disassembled or added on the shell 1 according to actual needs. A cavity is formed in the heat dissipation member 5. Heat dissipation liquid 6 is encapsulated in the cavity. A plurality of thin tubes 7 are arranged in an array on one side of the heat dissipation member 5 close to the electronic component assembly 2. Exchange channels 8 are formed in the thin tubes 7 and communicate with the cavity. The thin tubes 7 are in contact with the electronic component assembly 2. The position of the heat dissipation member 5 sliding in the mounting groove 4 can be fixed. The interval between the two heat dissipation members 5 can be adjusted. When the heat dissipation members 5 are not fixed, that is, when the heat dissipation members 5 are naturally stacked in the mounting grooves 4, a certain number of heat dissipation members 5 can exactly fill one side of the shell 1. The heat dissipation members 5 are arranged on at least one side of the shell 1.
[0026] Some preferred / improved embodiments based on the above embodiments will be further described below. The following embodiments can be selected or combined.
[0027] As Figure 1As shown, the mounting groove 4 divides the mounting plate 9 from the housing 1. The mounting plate 9 has a plurality of open slots 10 arrayed on it. The housing 1 and the mounting plate 9 are made of iron. The number of open slots 10 is a certain number. The number of open slots 10 in the figure is only an example. The opening of the open slots 10 will not affect the structural strength of the mounting plate 9.
[0028] Furthermore, a pair of sliders 11 extend from each side of the heat sink 5. The heat sink 5 is detachably installed on the housing 1 by sliding the sliders 11 into the mounting groove 4. By increasing or decreasing the number of heat sinks 5 and adjusting the gap between them, different degrees of heat dissipation can be achieved to adapt to the heat dissipation function required by the switch in different power tool working environments. Once the heat sink 5 is adjusted, it does not need to be replaced or adjusted again after being installed in the power tool, thus providing a long-lasting heat dissipation effect.
[0029] Furthermore, a magnet rod 12 matching the opening groove 10 is placed inside the opening groove 10. The magnet rod 12 is used to fix the position of the heat sink 5 in the mounting groove 4. The heat sink 5 is adjusted to a suitable position above the opening groove 10, and then the magnet rod 12 is completely inserted into the opening groove 10. The opening groove 10 can then be attracted to the opening groove 10. If the power tool is in a high-vibration environment, a clamp can be used to clamp the heat sink 5 and the magnet rod 12 together for fixation. Alternatively, screws and nuts can be used to directly fix the magnet to the mounting plate 9.
[0030] like Figures 2-3 As shown, the cavity contains several partition plates 13, which are parallel to each other and arranged in an array along the height of the cavity. Each partition plate 13 is a concave arc-shaped plate. The partition plates 13 divide the cavity into several independent chambers 14. The partition plates divide the cavity into several small chambers 14. The heat dissipation liquid 6 in a single chamber 14 moves more efficiently in the smaller chambers 14, and the heat exchange is faster, thereby improving the heat dissipation effect. In addition, the concave partition plates can reduce the influence of water pressure on the capillary tube 7, so that the heat dissipation liquid 6 can enter the exchange channel 8 of the suction tube under the influence of the capillary tube 7. The heat dissipation liquid 6 can be water or isopropanol.
[0031] In some embodiments, the heat sink 5 has a plurality of parallel heat sinks 15 arranged on its outer side. The array of heat sinks 15 can increase the heat dissipation area, and the gaps between the heat sinks 15 can guide the air to undergo thermal motion, accelerate air flow, and improve heat dissipation efficiency.
[0032] In some embodiments, the thin tube 7 comprises a first section 701 extending vertically from the heat sink 5 and a second section 702 extending vertically upward from the end of the first section 701, the connection between the first section 701 and the second section 702 is curved, the exchange channel 8 inside the curved connection is a smooth arc-shaped channel, which avoids affecting the normal flow exchange of the heat sink liquid 6, wherein the second section 702 is in contact with the electronic component assembly 2, the contact surface is a plane, the curved second section 702 increases the heat absorption area of the thin tube 7 and reduces the influence of water pressure, the thin tube 7 and the heat sink 5 synchronously absorb heat, the heat absorption area is large and the heat absorption effect is good. Thus, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present application, and the foregoing embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can understand that the technical solutions described in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A heat dissipation structure of a power tool switch, comprising a housing and an electronic component assembly, an operation knob for operating on-off of the power tool switch being provided on the electronic component assembly, characterized in that, The shell is symmetrically provided with mounting slots on both sides, a plurality of heat dissipation pieces are slidably arranged in the mounting slots, the heat dissipation pieces can be removed or added on the shell according to actual needs, a cavity is formed in the heat dissipation piece, heat dissipation liquid is encapsulated in the cavity, a plurality of thin tubes are arranged on the side of the heat dissipation piece close to the electronic component assembly, exchange channels are formed in the thin tubes and communicated with the cavity, the thin tubes are in contact with the electronic component assembly, the position of the heat dissipation piece slidably arranged in the mounting slot can be fixed, and the interval between the two heat dissipation pieces can be adjusted.
2. The heat dissipation structure of an electric power tool switch according to claim 1, wherein The mounting slots are divided from the shell to form mounting plates, a plurality of open slots are arranged on the mounting plates, and the shell and the mounting plates are made of iron.
3. The heat dissipation structure of an electric power tool switch according to claim 2, wherein A pair of sliding blocks is extended from each side of the heat dissipation piece, and the heat dissipation piece is detachably mounted on the shell by sliding the sliding blocks in the mounting slots.
4. The heat dissipating structure of an electric power tool switch according to claim 2, wherein A magnet rod matched with the open slot is placed in the open slot, and the magnet rod is used for fixing the position of the heat dissipation piece in the mounting slot.
5. The heat dissipating structure of an electric power tool switch according to claim 1, wherein A plurality of partition plates are formed in the cavity, and the partition plates are parallel to each other and arranged along the height direction of the cavity.
6. The heat dissipating structure of an electric power tool switch according to claim 5, wherein The partition plate is a downwardly concave arc-shaped plate, and a plurality of the partition plates divide the cavity into a plurality of independent chambers.
7. The heat dissipating structure of an electric tool switch according to claim 1, wherein A plurality of parallel heat dissipation fins are arranged on the outer side of the heat dissipation piece.
8. The heat dissipating structure of an electric power tool switch according to claim 1, wherein The thin tube comprises a first segment and a second segment, the first segment is vertically extended from the heat dissipation piece, and the second segment is vertically extended upward from the end of the first segment.