Electric tool

Abstract

The utility model discloses an electric tool, which comprises a shell, a light source module, a power supply module, a power supply module, a power supply module, a power supply module and a power supply module, the light guide part is of a transparent structure and is arranged in the light hole, the light guide part comprises an inner end face and an outer end face which are opposite, the inner end face faces the containing cavity, and the outer end face faces the outside; the control panel is arranged in the accommodating cavity and comprises a first part adjacent to the light guide piece; the LED lamp is attached to the control panel and arranged on the first part, the LED lamp comprises a light-emitting face, the light-emitting face is arranged opposite to the inner end face of the light guide part, the projection of the light-emitting face on the plane where the inner end face is located is located in the range of the inner end face, and light emitted by the self-luminous face enters the light guide part through the inner end face and is emitted out through the outer end face. According to the electric tool, the LED lamp is easy to assemble and not prone to damage, and the lighting effect is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric tools, and in particular relates to an electric tool with an illuminating LED lamp. Background Art

[0002] In order to adapt to working in an environment with insufficient light source, some existing handheld power tools (such as electric drills) are integrated with LED lights to provide lighting for the working area.

[0003] There are two ways to install LED lights on existing handheld power tools: the first is to integrate the LED light into the controller in a plug-in manner; the second is to set the LED light independently from the control board and connect it to the control board through wires. The former, which installs the LED light as a plug-in on the control board, has a lower cost, but integrating it on the controller will increase the processing cost of the control board, and it is necessary to open holes corresponding to the LED pins on the control board. The lamp pins of the plug-in LED need to be bent, so the control board is difficult to assemble and the LED is easily damaged during the assembly process. The latter, which uses an independent LED light to connect to the control board through wires, is convenient and flexible to install, but the processing is complicated and the overall cost is the highest, and it is also easy to be damaged during the assembly process.

[0004] Therefore, it is necessary to improve the prior art to overcome the above defects in the prior art. Utility Model Content

[0005] Therefore, the utility model aims to solve the technical problem that LED lamps are easily damaged in the prior art.

[0006] In order to solve the above technical problems, the utility model provides an electric tool, comprising:

[0007] A housing having a receiving cavity formed therein, wherein the housing is provided with a light-transmitting hole passing through the receiving cavity and the outside;

[0008] A light guide member is a transparent structure, and is disposed in the light-transmitting hole. The light guide member comprises an inner end surface and an outer end surface opposite to each other, wherein the inner end surface faces the receiving cavity, and the outer end surface faces the outside;

[0009] A control panel, disposed in the receiving cavity, including a first portion adjacent to the light guide;

[0010] An LED lamp is mounted on the control board and is arranged in the first part. The LED lamp includes a light-emitting surface, which is arranged opposite to the inner end surface of the light guide. The projection of the light-emitting surface on the plane where the inner end surface is located is located within the range of the inner end surface. Light emitted from the light-emitting surface enters the interior of the light guide through the inner end surface and is emitted through the outer end surface.

[0011] Preferably, the inner wall of the shell is partially recessed to form a clearance groove, the light-transmitting hole is located at the bottom wall of the clearance groove, the first part is at least partially located in the clearance groove, and the LED lamp is arranged adjacent to the outer edge of the panel of the first part.

[0012] Preferably, a gap is provided between the first portion and the bottom wall of the recess, and a distance between the light-emitting surface of the LED lamp and the inner end surface of the light guide is less than 1 cm.

[0013] Preferably, the irradiation direction of the LED lamp is parallel to the control board, and in one of the planes parallel to the control board, the center of the light-emitting surface and the center of the inner end surface are arranged coplanarly.

[0014] Preferably, the number of the LED lamps is at least 2, at least two of the LED lamps are arranged side by side, and the light-emitting surface of each LED lamp is parallel to the inner end surface and is equidistantly arranged.

[0015] Preferably, the shell includes a first half shell and a second half shell that are matched with each other, the light-transmitting hole is formed at the joint between the first half shell and the second half shell, and the light guide is clamped between the first half shell and the second half shell.

[0016] Preferably, the light guide includes a light guide body and a limiting portion, the inner end surface and the outer end surface are respectively formed at two opposite ends of the light guide body, the limiting portion is arranged on the side of the light guide body, the light-transmitting hole includes a limiting groove cooperating with the limiting portion, the limiting groove is located at the mating surfaces of the first half shell and the second half shell, and the limiting portion is received in the limiting groove to position the light guide.

[0017] Preferably, the limiting portion is constructed as a convex column protruding from the side of the light guide body, and the number of the convex columns is two, which are respectively arranged on two opposite sides of the light guide body.

[0018] Preferably, the housing comprises a main body and a gripping portion connected to or integrally formed with the main body, an outer surface of the gripping portion forms a gripping area for gripping, the gripping portion has a gripping center line, and the gripping area surrounds the gripping center line;

[0019] The electric tool also includes a trigger arranged in the middle area of ​​the grip portion, and the grip portion also includes an upper area located above the trigger and adjacent to the main body and a lower area located below the middle area, the upper area, the middle area and the lower area are arranged in sequence along the grip center line, and the light-transmitting hole is arranged in the upper area, located above the same side of the grip portion where the trigger is arranged.

[0020] Preferably, it also includes a motor arranged in the main body, the control board is arranged parallel to the axis of the motor, the first part includes a first board surface arranged toward the motor and a second board surface arranged away from the motor, and the LED light is arranged on the second board surface.

[0021] The technical solution provided by the utility model has the following advantages:

[0022] In the electric tool provided by the utility model, the LED lamp is mounted on the control board, which reduces the risk of damage to the LED assembly. The LED lamp is further arranged on the first part of the control board adjacent to the light guide. The projection of the light-emitting surface of the LED lamp on the plane where the inner end face of the light guide is located is located within the range of the inner end face, thereby reducing the distance between the light-emitting surface of the LED lamp and the light guide, and at the same time increasing the amount of light emitted from the light-emitting surface that enters the interior of the light guide through the inner end face, thereby improving the lighting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of the electric tool provided by the embodiment of the utility model;

[0025] Figure 2 for Figure 1 An enlarged schematic diagram of area a of the three-dimensional structural schematic diagram of the electric tool shown;

[0026] Figure 3 A schematic diagram of the internal structure of the electric tool (with the first half shell hidden) provided by an embodiment of the utility model;

[0027] Figure 4 for Figure 3 An enlarged schematic diagram of area b of the schematic diagram of the internal structure of the electric tool shown;

[0028] Figure 5 A schematic diagram of the three-dimensional structure of a control panel and a light guide member of an electric tool provided by an embodiment of the utility model;

[0029] Figure 6 for Figure 5 A schematic diagram of the three-dimensional structure of the light guide shown in another perspective;

[0030] Figure 7 A schematic diagram of the three-dimensional structure of the first half shell of the electric tool provided by an embodiment of the utility model;

[0031] Figure 8 for Figure 7 The enlarged schematic diagram of the c area of ​​the three-dimensional structural schematic diagram of the first half shell is shown. DETAILED DESCRIPTION

[0032] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0034] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0035] Example 1

[0036] This embodiment provides an electric tool. Figure 1 This is a three-dimensional structural diagram of the electric tool provided by the embodiment of the utility model. Figure 2 for Figure 1 The enlarged schematic diagram of area a of the three-dimensional structural schematic diagram of the electric tool shown in FIG. Figure 3 This is a schematic diagram of the internal structure of the electric tool (with the first half shell hidden) provided by the embodiment of the utility model. Figure 4 for Figure 3 The enlarged schematic diagram of area b of the schematic diagram of the internal structure of the power tool shown. Figures 1 to 4 The electric tool includes a housing 10 , a light guide 20 , a control panel 30 and an LED lamp 40 .

[0037] The housing 10 is the outer shell of the electric tool, and a receiving chamber 16 is formed inside the housing for receiving functional components of the electric tool. Figure 1In the illustrated embodiment, the housing 10 is in the shape of a handheld gun, including a main body 11 and a gripping portion 13 connected to or integrally formed with the main body 11. The outer surface of the gripping portion 13 forms a gripping area for gripping, and the gripping portion 13 has a gripping centerline, and the gripping area surrounds the gripping centerline. The main body 11 has a main body centerline, and the gripping centerline is set at an angle with the main body centerline, and the angle is not zero. In the normal operating state, a person grasps the gripping portion 13, and the main body 11 is located on the side of the base of the operator's gripping hand.

[0038] Please refer to Figure 3 and Figure 4 The control board 30 is disposed in the receiving cavity 16 and is used to control the operation of the power tool. The LED lamp 40 is mounted on the control board 30, and the LED lamp 40 is turned on and off by the control board 30. Specifically, the LED lamp is mounted on the surface of the control board 30 by SMT (Surface Mounted Technology) technology.

[0039] It should be noted that SMT technology, referred to as surface mount technology in Chinese, is a circuit assembly technology that mounts pinless or short-lead surface mount components (referred to as SMC / SMD, called sheet components in Chinese) on the surface of a printed circuit board (PCB) or other substrate, and assembles them by soldering through reflow soldering or dip soldering.

[0040] Please return Figure 2 The housing 10 is provided with a light-transmitting hole 12 that passes through the receiving cavity 16 and the outside, and the light guide 20 is a transparent structure, which is arranged in the light-transmitting hole 12. When the LED is in the on state, the light emitted by the LED lamp 40 can be emitted to the outside through the light guide 20, and the light guide 20 can guide the light to the outside more advantageously, and improve the brightness and / or distance of the light emitted after passing through the light guide 20. Preferably, the light guide 20 basically closes the light-transmitting hole 12, which can prevent foreign matter from entering the receiving cavity from the light-transmitting hole and polluting the receiving cavity, and on the other hand, can maximize the use of the light-transmitting hole size and improve the light guiding amount.

[0041] For the purpose of illustration, please combine Figure 5 and Figure 6 , the end surface of the light guide 20 facing the receiving cavity 16 is defined as the inner end surface 211, and the end surface facing the outside is defined as the outer end surface 213. The inner end surface 211 and the outer end surface 213 are arranged opposite to each other, and the light emitted from the LED lamp 40 first hits the inner end surface 211, enters the inside of the light guide 20 through the inner end surface 211, and finally emits to the outside from the outer end surface 213 to illuminate the external environment.

[0042] Please refer to Figure 4The control panel 30 includes a first portion 31 adjacent to the light guide 20, and the LED lamp 40 is mounted on the surface of the first portion 31, which can reduce the distance between the LED lamp 40 and the light guide 20 and ensure the intensity of the light emitted to the outside. Figure 5 and Figure 6 The LED lamp 40 includes a light-emitting surface 42, which is arranged opposite to the inner end surface 211 of the light guide 20. The projection of the light-emitting surface 42 on the plane where the inner end surface 211 is located is within the range of the inner end surface 211. The light emitted from the light-emitting surface 42 enters the interior of the light guide 20 through the inner end surface 211 and is emitted through the outer end surface 213. In this way, it can be ensured that the light emitted from the light-emitting surface of the LED lamp hits the inner end surface of the light guide to a large extent, which is convenient for guiding the light through the light guide, thereby improving the lighting effect of the emitted external light.

[0043] For specific embodiments, see Figure 3 As shown, the electric tool also includes a motor 50 for providing power and a working part (not shown) driven by the motor 50. The motor 50 is disposed in the main body 11 and is substantially parallel to the center line of the main body. According to the different working tasks performed by the working part, the electric tool is divided into multiple types. In a specific embodiment, the electric tool can be an electric drill, an electric screwdriver, or an electric wrench. Figure 1 The electric tool in the embodiment shown is an electric drill, and the working part matched therewith is a drill bit, which performs the drilling task. The utility model is described by taking the electric drill as an example, but it cannot be understood as a limitation of the utility model.

[0044] In order to further improve the lighting effect of the LED lamp, in one embodiment, see Figure 4 As shown, the inner wall of the housing 10 is partially recessed to form a clearance groove 18, the light-transmitting hole 12 is located at the bottom wall of the clearance groove 18, the first part 31 is at least partially located in the clearance groove 18, and the LED lamp 40 is arranged near the outer edge of the plate surface of the first part 31. The side surface of the housing 10 facing the receiving cavity 16 is the inner surface, and the surface facing the outside is the outer surface. The recessed direction of the above-mentioned clearance groove 18 is from the inner surface to the outer surface. In this way, an expansion space (that is, the inner space of the clearance groove 18) is formed inside the housing 10, and the light-transmitting hole 12 is located at the bottom wall of the expansion space. The expansion space allows the first part 31 to penetrate into the clearance groove 18. Preferably, the LED lamp 40 at least partially penetrates into the clearance groove 18 to shorten the distance between the LED lamp 40 and the light guide 20. Furthermore, the LED lamp 40 is disposed close to the outer edge of the panel of the first portion 31 , so that the LED lamp 40 is closer to the light guide 20 , the distance between the LED lamp 40 and the light guide 20 is shortened, and the lighting effect of the emitted light is improved.

[0045] Specifically, a gap is set between the first portion 31 and the bottom wall of the recess 18, and the distance between the light-emitting surface 42 of the LED lamp 40 and the inner end surface 211 of the light guide 20 is less than 1 cm. The gap between the first portion and the bottom wall of the recess is conducive to avoiding interference, and the distance between the light-emitting surface and the inner end surface of the light guide is less than 1 cm, which can ensure the brightness of the light irradiated by the LED light source on the light guide, thereby improving the brightness of the light emitted to the outside.

[0046] In order to further ensure the lighting effect, in one embodiment, the irradiation direction of the LED lamp 40 is parallel to the control board 30, and in one of the planes parallel to the control board 30, the center of the light-emitting surface 42 is coplanar with the center of the inner end surface 211. Specifically, the light-emitting surface 42 of the LED lamp 40 is a plane, and the inner end surface 211 of the light guide 20 is also a plane and is parallel to the light-emitting surface 42, and the center of the light-emitting surface 42 is coplanar with the center of the inner end surface 211. In this way, the centers of the light-emitting surface and the inner end surface are aligned, and the light of the light-emitting surface is roughly hit in the middle area of ​​the inner end surface after being emitted in parallel, which can ensure the guiding effect of the light guide on the light and ensure the lighting effect.

[0047] In order to further improve the lighting range, in one embodiment, the number of LED lamps 40 is 2, and the two LED lamps 40 are arranged side by side, and the light-emitting surface 42 of each LED lamp 40 is parallel to and equidistant from the inner end surface 211. Of course, the number of LED lamps 40 can also be more, such as 3, 4 or 5, and multiple LED lamps 40 are arranged side by side, and the light-emitting surface 42 of each LED lamp 40 is parallel to and equidistant from the inner end surface 211. Regardless of the number of LED lamps, the projections of the light-emitting surfaces of all LEDs on the plane where the inner end surface is located are all located within the range of the inner end surface.

[0048] In order to facilitate the assembly of the light guide, in a specific embodiment, the housing 10 is a left and right half-shell structure. Figure 3 This is a schematic diagram of the internal structure of the electric tool (with the first half shell hidden) provided by the embodiment of the utility model. Figure 7 This is a three-dimensional structural diagram of the first half shell of the electric tool provided by the embodiment of the utility model. Figure 3 and Figure 7 As shown, the housing 10 includes a first half shell 14 and a second half shell 15 that are matched with each other. The matching surfaces of the first half shell 14 and the second half shell 15 are roughly a plane, and the housing 10 is symmetrical about the plane. The first half shell 14 and the second half shell 15 are fixed by bolts after matching, and the two half shells are surrounded to form a receiving cavity. Please refer to Figure 4 and Figure 8 The light-transmitting hole 12 is formed at the joint between the first half shell 14 and the second half shell 15 .

[0049] For details, see Figure 5 and Figure 6The light guide 20 includes a light guide body 21 and a stopper 23. The light guide body 21 is generally block-shaped, and an inner end face 211 and an outer end face 213 are formed at opposite ends of the light guide body 21. The stopper 23 is disposed on the side of the light guide body 21 and protrudes outward from the side wall of the light guide body 21. The side is a side surface different from the inner end face 211 and the outer end face 213. Figure 8 As shown, the light-transmitting hole 12 includes a limiting groove 121 that cooperates with the limiting portion 23. The limiting groove 121 is located at the mating surface of the first half shell 14 and the second half shell 15. Before the first half shell 14 and the second half shell 15 are mated, the light guide 20 is first positioned at the groove of the light-transmitting hole 12 of the first half shell 14 or the second half shell 15, and the limiting portion 23 is at least partially accommodated in the limiting groove 121 to achieve preliminary positioning of the light guide 20 relative to the first half shell 14 or the second half shell 15. Then the two half shells are mated and fixed by fasteners. The light guide 20 is clamped between the first half shell 14 and the second half shell 15 to achieve fixation of the light guide 12.

[0050] More specifically, the limiting portion 23 is constructed as a convex column protruding from the side of the light guide 21, and the number of the convex columns is two, which are respectively arranged on the opposite sides of the light guide 21. Correspondingly, the number of the limiting grooves 121 is also two, which are arranged on the opposite side walls of the light transmission hole 12, and are used to cooperate with the two limiting portions 23 respectively. The light guide is positioned by two opposite limiting portions, which can more stably fix the light guide, reduce shaking, and ensure the light guiding effect.

[0051] In some embodiments, the electric tool further includes a trigger 61 disposed on the grip portion 13 and a control body 62 located in the grip portion 13. The trigger 61 is disposed on the front side of the grip portion 13, and is used for a human hand to operate to trigger the control body 62 to control the start and stop of the electric tool. In the extension direction of the grip center line of the grip portion 13, the trigger 61 is disposed in the middle area of ​​the grip portion 13, and the grip portion 13 also includes an upper area located above the trigger 61 and a lower area located below the trigger 61. Among them, the upper area is adjacent to the main body 11, and the upper area, the middle area and the lower area are arranged in sequence along the grip center line. The light-transmitting hole 12 is disposed in the upper area of ​​the grip portion 13, and is located above the same side of the grip portion 13 where the trigger 61 is disposed. When a human hand grasps the grip area, the index finger usually operates the trigger 61, and the light-transmitting hole 12 is located above the index finger of the operator and will not be blocked by the hand. The light direction is toward the front of the wrist, which is convenient for illuminating the front working environment.

[0052] In the axial direction of the motor 50, the length of the upper region is greater than that of the middle region and the lower region, and the control panel 30 is disposed in the upper region. In other words, the length of the upper region is the largest, and the length of the internal space formed by the upper region is also the longest. The control panel 30 is disposed in the upper region, which utilizes the spatial length of the upper region, has little impact on the shell shape, and has a compact overall structure. It should be noted that the relative relationship between the upper region, the middle region, and the lower region is defined by centering the grip portion 13 region where the trigger 61 is located, and does not mean that the three regions need to be equally divided in any size.

[0053] In a specific embodiment, the control board 30 is arranged as a whole parallel to the axis of the motor 50 (the first part 31 is also parallel to the axis of the motor 50), the first part 31 includes a first board surface 34 arranged toward the motor 50 and a second board surface 36 arranged away from the motor 50, and the LED lamp 40 is arranged on the second board surface 36 of the first part 31. Thus, the LED lamp 40 is relatively far away from the motor 50, reducing the adverse effect of heat generated by the motor 50 during operation on the LED lamp 40.

[0054] To sum up, in the electric tool provided in this embodiment, the LED lamp is mounted on the control board, which reduces the risk of damage to the LED assembly. Furthermore, the LED lamp is arranged in the first part of the control board adjacent to the light guide, thereby shortening the distance between the light-emitting surface of the LED lamp and the light guide. At the same time, the LED lamp is arranged so that the projection of the light-emitting surface on the plane where the inner end face of the light guide is located is within the range of the inner end face, thereby increasing the amount of light emitted from the light-emitting surface that enters the interior of the light guide through the inner end face, thereby improving the lighting effect.

[0055] Obviously, the above described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the utility model.

Claims

1. An electric tool, characterized in that: include: A housing having a receiving cavity formed therein, wherein the housing is provided with a light-transmitting hole passing through the receiving cavity and the outside; A light guide member is a transparent structure, and is disposed in the light-transmitting hole. The light guide member comprises an inner end surface and an outer end surface opposite to each other, wherein the inner end surface faces the receiving cavity, and the outer end surface faces the outside; A control panel, disposed in the receiving cavity, including a first portion adjacent to the light guide; An LED lamp is mounted on the control board and is arranged in the first part. The LED lamp includes a light-emitting surface, which is arranged opposite to the inner end surface of the light guide. The projection of the light-emitting surface on the plane where the inner end surface is located is located within the range of the inner end surface. Light emitted from the light-emitting surface enters the interior of the light guide through the inner end surface and is emitted through the outer end surface.

2. The electric tool according to claim 1, characterized in that: The inner wall of the shell is partially recessed to form a recess, the light-transmitting hole is located at the bottom wall of the recess, the first part is at least partially located in the recess, and the LED lamp is arranged adjacent to the outer edge of the panel of the first part.

3. The electric tool according to claim 2, characterized in that: A gap is provided between the first portion and the bottom wall of the recess, and a distance between the light-emitting surface of the LED lamp and the inner end surface of the light guide is less than 1 cm.

4. The electric tool according to claim 1, characterized in that: The irradiation direction of the LED lamp is parallel to the control board. In one plane parallel to the control board, the center of the light-emitting surface and the center of the inner end surface are arranged coplanarly.

5. The electric tool according to claim 1, wherein: The number of the LED lamps is at least 2, at least two of the LED lamps are arranged side by side, and the light-emitting surface of each LED lamp is parallel to the inner end surface and is equidistantly arranged.

6. The electric tool according to claim 1, wherein: The shell comprises a first half shell and a second half shell which are matched with each other, the light-transmitting hole is formed at the joint between the first half shell and the second half shell, and the light guide is clamped between the first half shell and the second half shell.

7. The electric tool according to claim 6, characterized in that: The light guide component includes a light guide body and a limiting portion, the inner end surface and the outer end surface are respectively formed at two opposite ends of the light guide body, the limiting portion is arranged on the side of the light guide body, the light-transmitting hole includes a limiting groove matched with the limiting portion, the limiting groove is located at the mating surface of the first half shell and the second half shell, and the limiting portion is received in the limiting groove to position the light guide component.

8. The electric tool according to claim 7, characterized in that: The limiting portion is configured as a convex column protruding from the side of the light guide body, and the number of the convex columns is two, which are respectively arranged on two opposite sides of the light guide body.

9. The electric tool according to any one of claims 1 to 8, characterized in that: The housing comprises a main body and a gripping portion connected to or integrally formed with the main body, the outer surface of the gripping portion forms a gripping area for gripping, the gripping portion has a gripping center line, and the gripping area surrounds the gripping center line; The electric tool also includes a trigger arranged in the middle area of ​​the grip portion, and the grip portion also includes an upper area located above the trigger and adjacent to the main body and a lower area located below the middle area, the upper area, the middle area and the lower area are arranged in sequence along the grip center line, and the light-transmitting hole is arranged in the upper area, located above the same side of the grip portion where the trigger is arranged.

10. The electric tool according to claim 9, characterized in that: It also includes a motor arranged in the main body, the control board is arranged parallel to the axis of the motor, the first part includes a first board surface arranged toward the motor and a second board surface arranged away from the motor, and the LED light is arranged on the second board surface.

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