Locking switch of electric tool
By incorporating a rocker switch and button structure with a limit rod, limit section, and spring post, the design solves the problems of complex structure and hand fatigue associated with self-locking switches on power tools, achieving both convenient operation and enhanced safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-07
AI Technical Summary
Existing power tools have complex self-locking switch structures and require a large installation space, resulting in high costs, and prolonged trigger pressing can cause hand fatigue.
It adopts a rocker switch and button structure, combined with a limit rod, limit part and spring column design, and realizes the locking and unlocking of the button through the cooperation of the limit groove and the pressing groove, which simplifies the structure and reduces costs.
It has enabled convenient operation and improved safety of power tools, reduced hand fatigue, simplified structure and reduced cost.
Smart Images
Figure CN224096600U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power tool technology, and in particular to a locking switch for power tools. Background Technology
[0002] Handheld power tools use triggers to turn the motor on and off. With a standard trigger switch, the motor needs to be continuously pressed to keep it on, and releasing the trigger turns it off. This requires the operator to hold the trigger down for extended periods, easily causing hand fatigue and soreness.
[0003] Based on this, the prior art includes a self-locking switch for power tools proposed in application number CN2020218179360. By introducing a slope spring and a return spring into the power tool, combined with the self-locking mechanism of the positioning rib and guide groove, the fatigue problem caused by prolonged pressing of the trigger of a handheld power tool is solved. Automatic unlocking is achieved through the reset structure of the trigger lock, which improves the convenience and safety of operation.
[0004] However, this method still has the problems of relatively complex structure and large installation space requirements. Therefore, simplifying the structure and reducing costs are the objectives of this application.
[0005] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is the closest prior art to this application. Summary of the Invention
[0006] Based on this, this application provides a locking switch for power tools to solve one of the aforementioned technical problems.
[0007] The technical solution adopted by this application to solve its technical problem is a locking switch for an electric tool, including: a rocker switch, which serves as a switch for the electric tool;
[0008] A button has a contact on one side of its bottom for engaging with the rocker switch. The bottom of the button also has a connecting portion with an elastic element at its end. A limiting groove is formed on the connecting portion. A locking button is positioned perpendicular to the button and includes a limiting rod, a limiting part, and a spring post. One end of the limiting rod forms a limiting part. The spring post is positioned below the limiting part and has a spring sleeved on it, allowing it to move within the limiting groove. An additional pressing groove is formed within the limiting groove, through which the limiting part passes and restricts the button's rebound. Normally, the limiting part is located above the limiting groove. When the button is pressed towards the limiting rod, the pressing groove moves below the limiting part. After the locking button is pressed down, the limiting part restricts the button to its current position until it is pressed a second time.
[0009] In some embodiments, the limiting groove includes an arc-shaped segment, the outline of which corresponds to the outline of the limiting portion.
[0010] In some embodiments, the limiting portion includes an arc segment and a flat segment, wherein the arc segment can cooperate with the arc segment.
[0011] In some embodiments, the flat section can engage with the bottom of the button after the button is pressed toward the locking button.
[0012] In some embodiments, the diameter of the limiting portion is greater than the width of the limiting groove.
[0013] In some embodiments, the bottom edge of the arc segment is chamfered, and the top edge of the arc segment and the pressing groove are rounded to match the chamfer.
[0014] The beneficial effects of this application are as follows: This application can achieve locking of the button in the pressed state by means of two springs and matching buttons. By pressing the normally movable button, the connecting part is driven to move downward, so that the locking button is converted into a pressable state. By pressing, the limiting part restricts the rebound of the button, thereby achieving the locking function. The locking of the power tool is accomplished by means of only two springs and specially constructed connecting parts. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1This is a schematic diagram of the normal state of this application.
[0017] Figure 2 This is a schematic diagram of the lock button in the pressed state of this application.
[0018] Figure 3 This is a top view of the button structure of this application.
[0019] Figure 4 This is a schematic diagram of the locking button structure of this application.
[0020] Explanation of reference numerals in the attached diagram: 1. Rocker switch; 2. Button; 21. Contact; 22. Connecting part; 221. Elastic element; 222. Limiting groove; 223. Arc segment; 224. Pressing groove; 3. Locking button; 31. Limiting rod; 32. Limiting part; 321. Arc segment; 322. Flat segment; 33. Spring post; 34. Spring. Detailed Implementation
[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection of this application.
[0022] In the embodiments of this application, please refer to Figure 1-4 As shown, this application provides a locking switch for an electric tool, mainly including: a rocker switch, which serves as the switch for the electric tool;
[0023] Button 2, with a contact 21 on one side of its bottom for engaging with the rocker switch 1, and a connecting part 22 at its bottom, with an elastic element 221 at its end, and a limiting groove 222 formed on the connecting part 22; Locking button 3, positioned perpendicular to button 2, includes a limiting rod 31, a limiting part 32, and a spring post 33. One end of the limiting rod 31 forms a limiting part 32, and the spring post 33 is positioned below the limiting part 32. A spring 34 is fitted onto the upper part and can move within the limiting groove 222. An additional pressing groove 224 is provided within the limiting groove 222. The pressing groove 224 can be passed through by the limiting part 32 and restricts the rebound of the button 2. The limiting part 32 is normally located above the limiting groove 222. When the button 2 is pressed towards the limiting rod 31, the pressing groove 224 will move below the limiting part 32. After the locking button 3 is pressed down, the limiting part 32 will restrict the button 2 to the current position until the button 2 is pressed a second time.
[0024] Specifically, the limiting rod 31 is normally located within the limiting groove 222, and the limiting part 32 is located above the limiting groove 222. When the button 2 is pressed towards the limiting rod 31 and the elastic element 221 is compressed until the limiting part 32 is completely within the range of the pressing groove 224, the pressing groove 224 is located below the locking button 3. By pressing the locking button 3, the limiting part 32 is completely placed under the limiting groove 222. When the button 2 is released, the limiting part 32 will always be abutting against the lower part of the limiting groove 222 under the action of the elastic element 221 and the spring 34 until the button 2 is pressed again and released, so that the limiting part 32 re-enters the range of the pressing groove 224. Then, the locking button 3 rebounds under the action of the spring 34.
[0025] The following will continue to describe some preferred / improved embodiments based on the above embodiments. Any one of the following embodiments can be selected, or multiple embodiments can be combined.
[0026] Specifically, in order to enable the locking button 3 to be pressed down even when the button 2 is not fully pressed, the limiting groove 222 includes an arc-shaped segment 223, the outline of which corresponds to the outline of the limiting part 32.
[0027] Specifically, the limiting part 32 includes an arc segment 321 and a flat segment 322. The arc segment 321 can cooperate with the arc segment 223. The flat segment 322 can cooperate with the bottom of the button 2 after the button 2 is pressed towards the locking button 3. The presence of the arc segment 321 allows the limiting button 2 to provide a better fit with the limiting groove 222, and the flat segment 322 can effectively ensure that the locking button 3 is fully inserted into the pressing groove 224 and can also prevent rotation.
[0028] Preferably, in order to prevent the elastic element 221 from resetting the button 2 when the limiting part 32 is located below the limiting groove 222, the diameter of the limiting part 32 is larger than the width of the limiting groove 222.
[0029] Preferably, in order to make the pressing of the locking button 3 smoother, the bottom edge of the arc segment 321 is chamfered, and the top edge of the arc segment 223 and the pressing groove 224 are rounded to match the chamfer.
[0030] The various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.
[0031] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions 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 this application.
Claims
1. A locking switch for a power tool, characterized in that, include: A rocker switch, used as a switch for power tools; The button has a contact on one side of its bottom for engaging with the rocker switch. The bottom of the button also has a connecting part with an elastic element at its end and a limit groove on the connecting part. A locking button is provided, which is arranged perpendicular to the button. The locking button includes a limiting rod, a limiting part, and a spring post. One end of the limiting rod forms a limiting part. The spring post is located below the limiting part. A spring is sleeved on the spring post and can move within the limiting groove. An additional pressing groove is provided in the limiting groove. The pressing groove can be passed through by the limiting part and restricts the button's rebound. The limiting part is normally located above the limiting groove. When the button is pressed towards the limiting rod, the pressing groove moves below the limiting part. After the locking button is pressed down, the limiting part restricts the button to the current position until the button is pressed a second time.
2. The locking switch for a power tool according to claim 1, characterized in that, The limiting groove includes an arc-shaped segment, the outline of which corresponds to the outline of the limiting part.
3. A locking switch for a power tool according to claim 2, characterized in that, The limiting part includes an arc segment and a flat segment, and the arc segment can cooperate with the arc segment.
4. A locking switch for a power tool according to claim 3, characterized in that, The flat section can engage with the bottom of the button after the button is pressed in the direction of the lock button.
5. A locking switch for a power tool according to claim 4, characterized in that, The diameter of the limiting part is greater than the width of the limiting groove.
6. A locking switch for a power tool according to claim 3, characterized in that, The bottom edge of the arc segment is chamfered, and the top edge of the arc segment and the pressing groove are rounded to match the chamfer.