Handheld grinding tool with lamplight and lamplight structure applied to grinding tool

Abstract

The handheld grinding tool comprises a machine body with a handle, a driving motor is installed in the machine body, a grinding disc which is connected with the driving motor and used for grinding operation is arranged at the bottom of the machine body, the handheld grinding tool further comprises an illumination module independent of the machine body, and a connecting part is arranged on the illumination module. According to the polishing machine, a control switch does not need to be independently arranged on the machine body, so that the size of the machine body cannot be increased when the machine body is machined and formed, and the lighting module is detachably arranged on the machine body, so that the size of the machine body cannot be increased. A user can replace illumination modules with different illumination intensities or illumination modules with different illumination angles according to requirements, can be installed on the machine body for use when illumination is needed, and can detach the illumination modules or close the illumination modules for illumination when illumination is not needed. The problem that electric power is wasted or the illumination module always illuminates when the grinding equipment works is avoided.

Description

Technical Field

[0001] The utility model relates to a grinding tool, in particular to a handheld grinding tool with light and a lighting structure applied to the grinding tool. Background Art

[0002] Grinding is a type of surface modification technology. It generally refers to a processing method that uses rough objects (such as sandpaper containing high-hardness particles) to change the physical properties of the material surface through friction. The main purpose is to obtain a specific surface roughness. The application of electric grinders has gradually become common in the fields of mechanical manufacturing and home improvement. Electric grinders are mechanized tools that use an electric motor as power and drive the working head through a transmission mechanism to work. They include dry grinders or other grinders. They are very efficient in grinding flat surfaces such as walls, wooden boards, and floors. During the processing, the operator needs to understand the condition of the surface being ground. When there is insufficient light, a light source is needed to assist in observation. At this stage, external light sources are used for lighting, but this type of lighting cannot be illuminated as the grinder moves.

[0003] To address these issues, electric grinders are now being marketed with fixed lighting devices, available in two types: one with a single on / off switch and one with a constant lighting mode. For example, Chinese utility model patent CN202155773U discloses an integrated electric grinder with an integrated inspection light. The device comprises a grinder body and a lighting structure within the grinder body housing. The lighting structure includes an inspection light, a lamp holder for mounting the inspection light, and an electronic control assembly for driving the inspection light. The inspection light is located at the front end of the grinder body and is illuminated by triggering the electronic control assembly.

[0004] For example, the Chinese utility model patent CN209503763U discloses a new type of lithium-ion grinder, which includes a body, a handle, an outer cover, a battery pack, a switch, a speed control switch, an air outlet, an air inlet, a dust outlet, a brushless motor controller, a grinding disc, a vertical gear, a spring, a transverse gear, a dust suction fan blade, a heat dissipation fan blade, a brushless motor rotor, a brushless motor stator, an LED lamp, a switch pull rod, a switch push button and a switch spring. The inner cavity of the body is equipped with a brushless motor and an LED lamp, the LED lamp and the brushless motor are electrically connected to the switch, and a grinding disc is installed at the bottom of the body.

[0005] The existing electric grinders with lighting have the following problems: 1. For the mode of controlling the lighting with a separate switch, a separate control switch needs to be set on the machine body to control the lighting, which increases the processing cost of the electric grinder; 2. For the always-on lighting mode, the lighting lamp and the motor are controlled by the same power switch. The lighting lamp turns on when the motor starts. When used in a well-lit environment, the lighting lamp will waste electricity. Moreover, the lighting lamp turns on synchronously with the motor. If the lighting lamp is always on, the effective life of the lamp will be reduced; 3. For both the modes of controlling the lighting with a separate switch and the always-on lighting, the lighting lamp is fixed on the electric grinder and is an inseparable part of the electric grinder. Therefore, the light intensity and illumination angle of the lighting lamp cannot be changed according to needs, which has certain limitations. Utility Model Content

[0006] Based on the above-mentioned separate switch control lighting mode, a control switch needs to be set on the electric grinder for control. The lighting mode is always in a lighting state when the light is not needed, and the lights in the two modes cannot be replaced according to the light intensity and illumination angle requirements. The utility model provides a handheld grinding tool with light and a lighting structure used for the grinding tool.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a handheld grinding tool with light, including a body with a handle, a drive motor installed in the body, a grinding disc connected to the drive motor for grinding operations is provided at the bottom of the body, and also includes a lighting module independent of the body, the lighting module has a connecting portion, and the lighting module is detachably mounted on the body through the connecting portion for lighting during grinding disc operation.

[0008] A further preferred technical solution of the present invention is that the lighting module surrounds the side wall of the machine body adjacent to the bottom, and the lighting module is in an arc shape that matches the outer contour of the machine body.

[0009] A further preferred technical solution of the present invention is that a plurality of positioning parts are provided on the inner side of the lighting module for contacting with the outer contour of the body to position the lighting module.

[0010] A further preferred technical solution of the present invention is that a power supply battery is provided in the lighting module for providing electrical energy.

[0011] A further preferred technical solution of the present invention is: a power supply port is provided on the body, and an electrical connector is connected to the lighting module, and the electrical connector is connected to the power supply port to provide electrical energy to the lighting module.

[0012] A further preferred technical solution of the present invention is: the lighting module includes a support frame and a light-emitting part fixed on the support frame, the connecting part is a fixing seat arranged on the support frame and / or the light-emitting part, the fixing seat is provided with a mounting hole, and the body is correspondingly provided with a threaded hole, and the screw passes through the mounting hole and is connected with the threaded hole to fix the lighting module on the body.

[0013] A further preferred technical solution of the present utility model is: the lighting module includes a support frame and a light-emitting part fixed on the support frame, the connecting part is a bayonet / snap-on part arranged on the lighting module, and the body is correspondingly provided with a snap-on part / bayonet, and the lighting module and the body are snap-connected through the bayonet and the snap-on part.

[0014] A further preferred technical solution of the present invention is: the lighting module includes a support frame and a light-emitting portion fixed to the support frame, the connecting portion is an adhesive portion provided on the lighting module, and the lighting module is adhered to the body through the adhesive portion.

[0015] A further preferred technical solution of the present utility model is: the lower end of the body is provided with an outward-expanded mounting portion, the diameter of the mounting portion gradually decreases from bottom to top, the lighting module is a non-closed circular ring, one side of the lighting module has a notch, the lighting module is supported on the mounting portion and connected to it, the handle is laterally arranged at the upper end of the body, the body part between the handle and the mounting portion has a narrow portion, the width of the narrow portion is smaller than the width of the notch, and a control switch is provided on the lighting module for controlling its light illumination.

[0016] Another topic: A lighting structure applied to grinding tools, comprising an arc-shaped lighting module having a connection portion for detachable connection to the grinding tool; a plurality of positioning portions are provided on the inner side of the lighting module, the positioning portions being used to contact the grinding tool during installation to position the lighting module; the lighting module comprising a support frame and a light-emitting portion fixed to the support frame.

[0017] Compared with the existing technology, the advantage of the present invention is that the lighting module and the machine body are independent of each other, and there is no need to set a separate control switch on the machine body, so that the size of the machine body itself will not increase during processing and forming, and the lighting module is detachably installed on the machine body. Users can replace lighting modules with different lighting intensities or lighting modules with different illumination angles according to needs, and can be installed on the machine body for use when lighting is needed. When lighting is not needed, the lighting module can be removed or the lighting module can be turned off, avoiding waste of electricity or the problem of the lighting module always being illuminated when the grinding equipment is operating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the depicted objects and may contain exaggerated representations. Furthermore, the drawings are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the structure in which the lighting module is mounted on the body;

[0020] Figure 2 This is a schematic diagram of the disassembly of the lighting module and the body;

[0021] Figure 3 It is a cross-sectional schematic diagram of the lighting module installed on the body;

[0022] Figure 4 Schematic diagram of the structure of the lighting module;

[0023] Figure 5 It is the top view of the lighting module;

[0024] Figure 6 This is a top view of the lighting module installed on the body;

[0025] Figure 7 This is a schematic diagram of the three-dimensional structure of the lighting module installed on the body.

[0026] In the figure: 1. Body; 2. Handle; 3. Lighting module; 4. Grinding disc; 5. Fixing seat; 6. Mounting hole; 7. Threaded hole; 8. Mounting part; 9. Support frame; 10. Light-emitting part; 11. Positioning part; 12. Bump; 13. Notch; 14. Narrow part. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0028] It should be noted that like reference numerals denote like items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0029] Figure 1-Figure 7 As shown, the handheld grinding tool with light includes a body 1 with a handle 2 and a lighting module 3.

[0030] A driving motor is installed in the body 1, and a grinding disc 4 connected to the driving motor for grinding operations is provided at the bottom of the body 1. This structure is the same as that of existing grinding tools and is not elaborated in detail in this patent.

[0031] Figure 2 As shown, the above-mentioned lighting module 3 is a component independent of the body 1. The lighting module 3 has a connecting portion. The lighting module 3 is detachably mounted on the body 1 through the connecting portion for lighting when the grinding disc 4 is in operation. The lighting module 3 includes a support frame 9 and a light-emitting portion 10 fixed on the support frame 9, and lighting is performed by emitting light through the light-emitting portion 10.

[0032] There are many ways of detachable connection, and conventional connection methods in the field are applicable to this patent, for example:

[0033] Figure 2 、 Figure 4 、 Figure 5 As shown, one solution is shown, in which the connection portion is a fixing base 5 provided on the support frame 9 and / or the light-emitting portion 10. The fixing base 5 is provided with a mounting hole 6, and the body 1 is provided with a threaded hole 7. Screws pass through the mounting hole 6 and connect with the threaded hole 7 to fix the lighting module 3 to the body 1. Preferably, the support frame 9 and the light-emitting portion 10 are both provided with a bump 12, and the corresponding bumps 12 on the support frame 9 and the light-emitting portion 10 are combined to form the above-mentioned fixing base 5.

[0034] In another solution, the connection part is a bayonet / snap portion set on the lighting module 3, and a corresponding snap portion / bayonet is set on the body 1. The lighting module 3 and the body 1 are connected by inserting the snap portion into the bayonet, so that the lighting module 3 is fixed on the body 1.

[0035] In another solution, the connection portion is an adhesive portion provided on the lighting module 3 , and the lighting module 3 is adhered to the body 1 via the adhesive portion.

[0036] This patent provides lighting by setting up a lighting module 3 independent of the body 1. There is no need to set a separate switch on the body 1 to control the lighting of the lighting module 3, so that the size of the body 1 itself will not increase during processing and molding. The lighting module 3 is detachably installed on the body 1. The user can replace the lighting module 3 with different lighting intensities or lighting modules 3 with different illumination angles according to needs, and can be installed on the body 1 for use when lighting is needed. When lighting is not needed, the lighting module 3 can be removed or turned off to avoid wasting electricity or the problem of the lighting module 3 always being illuminated when the grinding equipment is operating.

[0037] In addition, a power supply battery is provided in the lighting module 3 for providing electrical energy, and a control switch is provided on the lighting module 3 for controlling its light emission.

[0038] Regarding the power supply method of the lighting module 3, we have another solution, the details of which are as follows:

[0039] A power supply port is provided on the body 1, and the power supply port is electrically connected to the power supply of the body 1. A power connector is connected to the lighting module 3. When the lighting module 3 is installed on the body 1, the power connector is connected to the power supply port so that the power supply on the body 1 supplies power to the lighting module 3. At this time, a control switch can be provided on the lighting module 3 to control the lighting of the lighting module 3, or the lighting module 3 can be powered on and illuminated when the power connector is connected to the power supply port, and the lighting module 3 stops lighting when the power connector is disconnected from the power supply port.

[0040] The lighting module 3 surrounds the side wall of the body 1 near the bottom. The lighting module 3 is an arc that matches the outer contour of the body 1. When the lighting module 3 is illuminated, it shines above the grinding edge of the grinding disc 4, illuminating the grinding area to the greatest extent.

[0041] Figure 1-Figure 3 As shown, specifically, the lower end of the body 1 is provided with an outwardly expanded mounting portion 8, the diameter of which gradually decreases from bottom to top. The lighting module 3 is in the shape of a non-closed ring, with a notch 13 on one side of the lighting module 3. The lighting module 3 is supported on and connected to the mounting portion 8. The handle 2 is disposed transversely at the upper end of the body 1, and the grinding disc 4 is located below the mounting portion 8. When the lighting module 3 is mounted on the mounting portion 8, the light-emitting portion 10 protrudes from the edge of the mounting portion 8 to illuminate the lower portion. Preferably, the lighting module 3 is in the shape of a three-quarter to five-sixths ring.

[0042] Figure 7 As shown, the body portion between the handle 2 and the mounting portion 8 has a narrow portion 14, and the width of the narrow portion 14 is smaller than the width of the notch 13. After the lighting module 3 is disconnected from the mounting portion 8, the lighting module 3 can be moved upward so that the notch 13 is opposite to the narrow portion 14, and then the lighting module 3 can be removed from the body 1 by moving the lighting module 3 horizontally.

[0043] In addition, a plurality of positioning portions 11 are provided on the inner side of the lighting module 3 for contacting the outer contour of the body 1 to position the lighting module 3. Preferably, the number of the positioning portions 11 is three, and the three positioning portions 11 are evenly spaced on the inner peripheral side wall of the light-emitting portion 10. When the lighting module 3 is sleeved on the outer side of the body 1 and fixed on the mounting portion 8, the three positioning portions 11 are against the side wall of the mounting portion 8 to position the lighting module 3, so that the range illuminated by the positioning module can face the grinding disc 4 below. When the grinding tool is grinding, the positioning portion 11 also serves as a force-bearing part that bears vibration, preventing vibration from directly acting on the connection between the lighting module 3 and the mounting portion 8, making the connection between the lighting module 3 and the body 1 more stable.

[0044] Regarding the structure for disassembling the lighting module 3, this patent has another solution, the specific contents are as follows:

[0045] Figure 6 As shown, the handle 2 is provided with a narrow portion 14 opposite to the notch 13 of the lighting module 3 below. The width of the narrow portion 14 is smaller than the width of the notch 13. After the lighting module 3 is disconnected from the mounting portion 8, the lighting module 3 can be removed from the body 1 by moving the lighting module 3 upward.

[0046] The above describes the lighted handheld grinding tool and the light structure for use with the grinding tool provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The above examples are intended only to facilitate understanding of the present invention and its core concepts. It should be noted that those skilled in the art may, without departing from the principles of the present invention, make various improvements and modifications to the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A handheld grinding tool with light, comprising a body with a handle, a drive motor installed in the body, and a grinding disc connected to the drive motor for grinding operation at the bottom of the body, characterized in that: It also includes a lighting module independent of the machine body, the lighting module has a connection portion, the lighting module is detachably mounted on the machine body through the connection portion for lighting during the grinding disc operation, The lighting module includes a support frame and a light-emitting portion fixed to the support frame. The connection portion is a fixing seat provided on the support frame and / or the light-emitting portion. The fixing seat is provided with a mounting hole. The body is provided with a corresponding threaded hole. The screw passes through the mounting hole and is connected to the threaded hole to fix the lighting module to the body. Alternatively, the lighting module includes a support frame and a light-emitting portion fixed to the support frame, the connection portion is a bayonet / snap-lock portion provided on the lighting module, the body is correspondingly provided with a snap-lock portion / bayonet, and the lighting module is snap-connected to the body via the bayonet and the snap-lock portion. Alternatively, the lighting module includes a support frame and a light-emitting portion fixed on the support frame, and the connecting portion is an adhesive portion provided on the lighting module, and the lighting module is adhered to the body through the adhesive portion.

2. The lighted handheld grinding tool according to claim 1, characterized in that: The lighting module surrounds the side wall of the machine body adjacent to the bottom, and the lighting module is in an arc shape matching the outer contour of the machine body.

3. The lighted handheld grinding tool according to claim 2, characterized in that: A plurality of positioning parts are provided on the inner side of the lighting module for contacting with the outer contour of the machine body to position the lighting module.

4. The handheld grinding tool with light according to claim 1, characterized in that: A power supply battery is provided in the lighting module for providing electrical energy.

5. The handheld grinding tool with light according to claim 1, characterized in that: The body is provided with a power supply port, and the lighting module is connected with an electrical connector, which is connected to the power supply port to provide electrical energy to the lighting module.

6. The lighted handheld grinding tool according to claim 3, characterized in that: The lower end of the body is provided with an outward-expanded mounting portion, and the diameter of the mounting portion gradually decreases from bottom to top. The lighting module is a non-closed circular ring, and one side of the lighting module has a notch. The lighting module is supported on the mounting portion and connected to it. The handle is laterally arranged at the upper end of the body, and the body part between the handle and the mounting portion has a narrow portion, the width of the narrow portion is smaller than the width of the notch, and a control switch is provided on the lighting module for controlling its light illumination.

7. A lighting structure for a grinding tool, characterized in that: It includes an arc-shaped lighting module, which has a connection part for detachable connection with a grinding tool. Several positioning parts are provided on the inner side of the lighting module. The positioning parts are used to contact the grinding tool to position the lighting module during installation. The lighting module includes a support frame and a light-emitting part fixed on the support frame.

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