Mistaken touch prevention structure of handheld electric tool

Abstract

The utility model discloses a mistaken touch prevention structure of a handheld electric tool, which belongs to the technical field of handheld electric tools, and adopts the technical scheme that the mistaken touch prevention structure comprises a handheld angle grinder body, the rear side of the handheld angle grinder body is rotatably connected with a mistaken touch prevention mechanism, the top of the mistaken touch prevention mechanism is fixedly connected with a bearing mechanism, and the bearing mechanism is fixedly connected with the handheld angle grinder body. A torsional spring in the mistaken touch prevention mechanism drives a baffle and can automatically reset and completely cover a start or pause button on the rear side of the handheld angle grinder, foreign matter and mistaken touch risks are effectively isolated, the clamping design of an anti-deviation groove and a stop lever ensures that the position of the baffle is accurate when the baffle is closed, the use safety and reliability of the tool are improved, and the working efficiency is improved. A supporting rod in the bearing mechanism is matched with a compression spring and a slidable sleeve, the height of the arm supporting frame can be adjusted in a self-adaptive mode according to the holding habit and the force application angle of a user, the arm supporting frame is flexible in supporting, hand fatigue is greatly relieved, the man-machine engineering experience is optimized, and the comfort and stability of long-time operation are improved.

Description

An anti-accidental operation structure for handheld power tools Technical Field

[0001] This utility model relates to the field of handheld power tool technology, and in particular to an anti-accidental touch structure for a handheld power tool. Background Technology

[0002] Handheld power tools such as electric drills, electric cutters, electric saws, and electric hammers are usually controlled by triggers and other components to start and operate. When not in use, if a person accidentally touches the trigger, the power tool can easily start unexpectedly. This may lead to construction hazards. For example, if there are people or objects around, the sudden start of the tool may cause collisions, cutting accidents, etc., threatening personnel safety. It may also accelerate the wear and tear of consumables and even cause personal injury.

[0003] To address the aforementioned issues, existing patents offer solutions. Existing rear-opening handheld angle grinders typically start or stop from the rear, lacking a structure to prevent accidental activation of the rear start or pause button. This means that during daily use, if the start button is accidentally pressed, the angle grinder may suddenly run at high speed. If there are people or other objects nearby at this time, it is very easy to cause injury, thus reducing the safety of rear-opening handheld angle grinders during use.

[0004] To address this, a structure for preventing accidental activation of handheld power tools is proposed. Summary of the Invention

[0005] The purpose of this utility model is to provide an anti-accidental touch structure for handheld power tools. This solves the problem that existing handheld power tools, such as rear-opening handheld angle grinders, which are usually turned on or off from the rear, lack a structure to prevent accidental touch of the rear start or pause button. As a result, if the start button is accidentally pressed during daily use, the angle grinder may suddenly run at high speed. If there are people or other objects nearby at this time, it is very easy to cause injury, thus reducing the safety of using rear-opening handheld angle grinders.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-accidental touch structure for a handheld power tool, comprising a handheld angle grinder body, an anti-accidental touch mechanism rotatably connected to the rear side of the handheld angle grinder body, and a support mechanism fixedly connected to the top of the anti-accidental touch mechanism;

[0007] The anti-accidental touch mechanism includes a torsion spring, a baffle, an anti-deviation groove, and a stop bar. The torsion spring is fixedly connected to the right side of the rear of the handheld angle grinder body, the baffle is fixedly connected to the rear side of the torsion spring, the anti-deviation groove is opened on the left side of the top of the baffle, and the stop bar is welded to the left side of the rear of the handheld angle grinder body. The anti-deviation groove and the stop bar are engaged and locked together.

[0008] Preferably, the supporting mechanism includes two support rods, a compression spring, a sleeve, and a support arm, with the support rods welded to both sides of the top of the baffle.

[0009] Preferably, the compression spring is disposed at the top of the support rod, and the sleeve is slidably connected to the surface of the support rod.

[0010] Preferably, the top of the compression spring is fixedly connected to the top of the inner side of the sleeve, and the support arm is welded to the top of the sleeve.

[0011] Preferably, the inner side of the support arm is fitted with a protective pad, which is made of silicone material.

[0012] Preferably, the bottom of the support rod and the top of the sleeve are both fixedly connected to a reinforcing ring, and the surface of the reinforcing ring is coated with an anti-corrosion coating.

[0013] Preferably, a buffer pad is fitted inside the anti-deviation groove, and the buffer pad is made of rubber material.

[0014] Preferably, the baffle is semi-circular and is made of aluminum alloy.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The torsion spring driven baffle in the anti-accidental touch mechanism of this application can automatically reset and completely cover the start or pause button on the back of the handheld angle grinder, effectively isolating foreign objects and the risk of accidental touch. The anti-deviation groove and the locking design of the baffle ensure that the position is accurate when the baffle is closed, improving the safety and reliability of tool use.

[0017] 2. The support rod in the support mechanism of this application is equipped with a compression spring and a sliding sleeve, which can adaptively adjust the height of the support arm according to the user's grip habits and force application angle. The support arm provides flexible support, greatly reduces hand fatigue, optimizes the ergonomic experience, and improves the comfort and stability of long-term operation. Attached Figure Description

[0018] Figure 1 is an overall structural diagram of the anti-accidental touch structure of the handheld power tool of this utility model;

[0019] Figure 2 is a schematic diagram of the structure of the stop bar of this utility model;

[0020] Figure 3 is an enlarged schematic diagram of point A in Figure 2 of this utility model;

[0021] Figure 4 is a schematic diagram of the anti-deviation groove of this utility model;

[0022] Figure 5 is a structural schematic diagram of the support mechanism of this utility model.

[0023] In the diagram, 1. Handheld angle grinder body; 2. Anti-accidental touch mechanism; 21. Torsion spring; 22. Baffle; 23. Anti-deviation groove; 24. Stop bar; 3. Support mechanism; 31. Support rod; 32. Compression spring; 33. Sleeve; 34. Support arm frame; 4. Protective pad; 5. Reinforcing ring; 6. Buffer pad. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please refer to Figures 1-5. The technical solution provided by this utility model is as follows:

[0026] An anti-accidental touch structure for a handheld power tool includes a handheld angle grinder body 1, an anti-accidental touch mechanism 2 rotatably connected to the rear side of the handheld angle grinder body 1, and a support mechanism 3 fixedly connected to the top of the anti-accidental touch mechanism 2.

[0027] The anti-accidental touch mechanism 2 includes a torsion spring 21, a baffle 22, an anti-deviation groove 23, and a stop bar 24. The torsion spring 21 is fixedly connected to the right side of the rear side of the handheld angle grinder body 1. The baffle 22 is fixedly connected to the rear side of the torsion spring 21. The anti-deviation groove 23 is opened on the left side of the top of the baffle 22. The stop bar 24 is welded to the left side of the rear side of the handheld angle grinder body 1. The anti-deviation groove 23 and the stop bar 24 are engaged and locked together.

[0028] In this embodiment: By setting the handheld angle grinder body 1, the items to be processed can be cut and ground. At the same time, it can support and limit the anti-accidental touch mechanism 2. The elastic force of the torsion spring 21 keeps the baffle 22 in a closed state when there is no external force, effectively blocking the start or pause button on the rear side and preventing accidental touch. At the same time, the user only needs to apply slight pressure with one hand to push the baffle 22 open to operate the button. After releasing the hand, the baffle 22 automatically resets without additional operation. The baffle 22 is set as a semi-circle. At the same time, the baffle 22 covers the button area, preventing foreign objects such as tools from directly contacting the button and reducing the risk of accidental touch. The anti-deviation groove 23 and the stop bar 24 ensure that the position of the baffle 22 is accurate when closed, avoiding the failure of protection due to shaking or displacement.

[0029] Specifically, as shown in Figure 5, the support mechanism 3 includes two support rods 31, a compression spring 32, a sleeve 33, and a support arm 34. The support rods 31 are welded to both sides of the top of the baffle 22.

[0030] Specifically, as shown in Figure 5, the compression spring 32 is disposed at the top of the support rod 31, and the sleeve 33 is slidably connected to the surface of the support rod 31.

[0031] Specifically, as shown in Figure 5, the top of the compression spring 32 is fixedly connected to the top of the inner side of the sleeve 33, and the support arm 34 is welded to the top of the sleeve 33.

[0032] In this embodiment: the support rod 31 can support and limit the compression spring 32 and the sleeve 33. At the same time, the sleeve 33 can slide up and down along the support rod 31. The sleeve 33 slides on the surface of the support rod 31, and together with the compression spring 32, it can achieve adaptive height adjustment to adapt to different users' grip habits and force application angles. The elasticity of the compression spring 32 absorbs tool vibration, reduces hand fatigue, and the deformation of the compression spring 32 disperses grip pressure, reduces local pressure, and improves the ergonomic experience. The arm bracket 34 provides users with additional grip support points, optimizes the force application posture, and reduces the burden of single-handed gripping.

[0033] Specifically, as shown in Figure 1, a protective pad 4 is fitted on the inner side of the support arm 34, and the protective pad 4 is made of silicone material.

[0034] Specifically, as shown in Figure 1, the bottom of the support rod 31 and the top of the sleeve 33 are both fixedly connected with reinforcing rings 5, and the surface of the reinforcing rings 5 ​​is coated with anti-corrosion paint.

[0035] In this embodiment: by setting a protective pad 4, vibration energy is absorbed, reducing the risk of damage to the operator's hands and arms during prolonged use. By setting the protective pad 4 to be made of silicone material, the silicone material protective pad 4 provides a soft touch and high friction, reducing the risk of slippage caused by hand sweat. By setting a reinforcing ring 5, the strength of the connection between the support rod 31 and the sleeve 33 is enhanced. By setting an anti-corrosion coating, it resists environmental erosion such as moisture and oil stains, extending the service life of the components.

[0036] Specifically, as shown in Figure 4, a buffer pad 6 is fitted inside the anti-deviation groove 23. The buffer pad 6 is made of rubber material.

[0037] Specifically, as shown in Figure 2, the baffle 22 is designed as a semi-circle and is made of aluminum alloy.

[0038] In this embodiment: By setting a buffer pad 6, cushioning can be provided when the anti-deviation groove 23 and the stop bar 24 are engaged. By setting the buffer pad 6 to be made of rubber material, the rubber buffer pad 6 reduces the noise when the stop bar 24 collides with the anti-deviation groove 23 and prevents wear or deformation caused by direct contact between metal parts. By setting the baffle 22 to be semi-circular, the semi-circular design can fit the outline of the button area on the rear side of the handheld angle grinder body 1. By setting the baffle 22 to be made of aluminum alloy material, aluminum alloy has the characteristics of high strength and lightweight. On the one hand, it can resist the collision and squeezing in daily use, avoid the deformation and damage of the baffle 22, and ensure long-term stable protective performance. On the other hand, it will not significantly increase the overall weight of the tool, making it convenient for users to hold and operate for a long time and reducing the burden of use.

[0039] Working principle: First, when the user needs to use the handheld angle grinder body 1, only a slight pressure needs to be applied with one hand to overcome the elastic force of the torsion spring 21 and push open the semi-circular baffle 22. After the user opens the handheld angle grinder body 1, the user releases their hand, and the baffle 22 automatically returns to its original position under the action of the torsion spring 21. During this process, the anti-deviation groove 23 and the stop rod 24 engage to ensure that the baffle 22 is accurately positioned when closed. Then, the user holds the handheld angle grinder body 1 and places their arm inside the support arm 34. At this time, according to the user's own grip habits and force application angle, the sleeve 33 slides on the surface of the support rod 31 and works with the compression spring 32 to achieve adaptive height adjustment. Afterwards, during the operation of the angle grinder, the compression spring 32 plays an elastic buffering role, absorbing the vibration generated by the tool. At the same time, it disperses the grip pressure through its own deformation, reducing the local pressure. Finally, when the cutting and grinding work is finished, the user pushes the baffle 22 again, presses the pause button, and then disconnects the power to the handheld angle grinder body 1 or places it aside.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anti-accidental operation structure for a handheld power tool, comprising a handheld angle grinder body (1), characterized in that: The rear side of the handheld angle grinder body (1) is rotatably connected to an anti-accidental touch mechanism (2), and the top of the anti-accidental touch mechanism (2) is fixedly connected to a support mechanism (3). The anti-accidental touch mechanism (2) includes a torsion spring (21), a baffle (22), an anti-deviation groove (23), and a stop bar (24). The torsion spring (21) is fixedly connected to the right side of the rear side of the handheld angle grinder body (1), the baffle (22) is fixedly connected to the rear side of the torsion spring (21), the anti-deviation groove (23) is opened on the left side of the top of the baffle (22), and the stop bar (24) is welded to the left side of the rear side of the handheld angle grinder body (1). The anti-deviation groove (23) and the stop bar (24) are engaged and locked together.

2. The anti-accidental touch structure for a handheld power tool according to claim 1, characterized in that: The supporting mechanism (3) includes two support rods (31), a compression spring (32), a sleeve (33) and a support arm (34), wherein the support rods (31) are welded to both sides of the top of the baffle (22).

3. The anti-accidental touch structure for a handheld power tool according to claim 2, characterized in that: The compression spring (32) is disposed at the top of the support rod (31), and the sleeve (33) is slidably connected to the surface of the support rod (31).

4. The anti-accidental touch structure for a handheld power tool according to claim 2, characterized in that: The top of the compression spring (32) is fixedly connected to the top of the inner side of the sleeve (33), and the support arm (34) is welded to the top of the sleeve (33).

5. The anti-accidental touch structure for a handheld power tool according to claim 2, characterized in that: The inner side of the support arm (34) is fitted with a protective pad (4), which is made of silicone material.

6. The anti-accidental touch structure for a handheld power tool according to claim 2, characterized in that: The bottom of the support rod (31) and the top of the sleeve (33) are both fixedly connected with reinforcing rings (5), and the surface of the reinforcing rings (5) is coated with anti-corrosion paint.

7. The anti-accidental touch structure for a handheld power tool according to claim 1, characterized in that: The inner side of the anti-deviation groove (23) is fitted with a buffer pad (6), which is made of rubber material.

8. The anti-accidental touch structure for a handheld power tool according to claim 1, characterized in that: The baffle (22) is semi-circular and is made of aluminum alloy.

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