Impact screwdriver

Abstract

The utility model discloses an impact screwdriver. The impact screwdriver comprises a handle, a machine shell and a battery pack, a base is arranged on one side of the handle, the battery pack is installed on the base, the machine shell is arranged on the side, away from the base, of the handle, an end cover assembly is arranged on one side of the machine shell, and a lighting module is arranged on the side, away from the machine shell, of the end cover assembly. A driving device is arranged in the machine shell, the output end of the driving device is connected with a reduction gearbox, the output end of the reduction gearbox is provided with an installation part, and the installation part penetrates through the end cover assembly, protrudes out of the end cover assembly and is used for installing a working head, or the working head penetrates through the end cover assembly and is installed on the installation part. According to the lighting module, the lighting module is installed on the end cover assembly through mechanism optimization, the end cover assembly is arranged on the shell of the reduction gearbox in a sleeving mode, and therefore heat of the reduction gearbox is prevented from being directly conducted to the lighting module during operation, and the reliability of the lighting module is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of handheld electric tools, in particular to an impact driver. BACKGROUND

[0002] With the miniaturization of handheld electric tools (such as impact drivers), they can be used for work in limited spaces. Since the light is relatively dim in most limited spaces, a light is provided on the electric tool to solve the problem of poor positioning of the user during work in the limited space. The existing light adopts LED lamp beads attached to a lamp panel, and then the lamp panel is fixed on the housing of a reduction gearbox. This assembly is troublesome.

[0003] The reduction gearbox of the electric tool is prone to heat generation during work, and the heat is directly conducted to the lamp panel, causing reliability problems of the lamp panel. In addition, the lamp panel is mostly fixed on the housing of the reduction gearbox by glue, and the lamp panel has a risk of falling off after the glue is heated. CONTENT OF THE UTILITY MODEL

[0004] To overcome the above-mentioned shortcomings, the purpose of the present application is to provide an impact driver with simple structure, stability and reliability.

[0005] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0006] An impact driver comprises:

[0007] a handle, a casing and a battery pack,

[0008] one side of the handle has a base, the base mounting the battery pack,

[0009] the side of the handle away from the base has a casing, one side of the casing is provided with an end cover assembly, the side of the end cover assembly away from the casing is provided with an illumination module,

[0010] a drive device is arranged in the casing, an output end of the drive device is connected to a reduction gearbox, an output end of the reduction gearbox is provided with a mounting portion, the mounting portion passes through the end cover assembly and protrudes from the end cover assembly, for mounting a working head, or the working head passes through the end cover assembly and is mounted to the mounting portion. In this way, part of the light emitted by the light source is directed towards the working head, facilitating work in limited spaces.

[0011] In an embodiment, the illumination module comprises a light source and a lamp panel, the light source is attached to one side of the lamp panel, the illumination module comprises a light source and a lamp panel, the light source is attached to one side of the lamp panel, and the light source is close to the side of the working head.

[0012] In an embodiment, the lamp panel is C-shaped or at least partially C-shaped.

[0013] In an embodiment, the number of light sources is three, which are arranged at intervals on the lamp panel.

[0014] In an embodiment, the lamp panel is a PCB lamp panel or a FPC lamp panel, on which at least one notch is arranged, which is used for clamping with the protrusion on the housing of the reduction gearbox.

[0015] In an embodiment, the lamp panel is fixed to the end cover assembly on the side of the light source by adhesive.

[0016] In an embodiment, the end cover assembly comprises an end cover and a cover plate, and the cover plate is arranged on the side of the end cover away from the reduction gearbox, and the lamp panel is fixed to the bottom of the end cover on the side of the light source by adhesive.

[0017] In an embodiment, the cover plate is made of rubber material.

[0018] In an embodiment, a trigger switch is arranged on the handle, which is connected to the control panel by a cable, and the trigger switch is used to control the impact driver,

[0019] A display component is arranged on the base, which is electrically connected to the control panel.

[0020] In an embodiment, the battery pack is a lithium-based rechargeable battery or a solid-state battery, which outputs a current greater than 30A when working.

[0021] Advantages

[0022] The impact driver provided in the present application optimizes the mechanism of the lighting module, which is installed on the inside of the end cover assembly, and the end cover assembly is sleeved on the housing of the reduction gearbox. Such design avoids the direct conduction of the heat of the reduction gearbox to the lighting module during operation, thereby improving the reliability of the lighting module. Preferably, a gap is provided between the lighting module and the end of the reduction gearbox, so as to further avoid the direct conduction of the heat of the reduction gearbox to the lamp panel of the lighting module during operation. The impact driver provided in the present application further optimizes the end cover, and a cover plate is arranged on the end cover, which is made of heat insulation material (such as rubber material). In this way, the heat of the reduction gearbox is avoided from being conducted to the end cover side during operation, thereby avoiding the user from being scalded when replacing the tool head. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings are included to provide a further understanding of the technical scheme of the present disclosure, and constitute a part of the specification, and are used together with the embodiments of the present disclosure to explain the technical scheme of the present disclosure, and do not constitute a limitation on the technical scheme of the present disclosure. The shapes and sizes of the components in the drawings do not reflect the true proportions, and the purpose is only to schematically illustrate the content of the present application.

[0024] Figure 1A perspective view of the impact driver of the embodiment of the present application;

[0025] Figure 2 A perspective view of the impact driver of the embodiment of the present application;

[0026] Figure 3 A perspective view of the impact driver of the embodiment of the present application;

[0027] Figure 4 A perspective view of the impact driver of the embodiment of the present application;

[0028] Figure 5 A perspective view of the impact driver of the embodiment of the present application;

[0029] Figure 6 A perspective view of the impact driver of the embodiment of the present application;

[0030] Figure 7 A perspective view of the impact driver of the embodiment of the present application; Figure 6 A perspective view of the impact driver of the embodiment of the present application;

[0031] Figure 8 A perspective view of the impact driver of the embodiment of the present application;

[0032] Figure 9 A perspective view of the impact driver of the embodiment of the present application;

[0033] Figure 10 A perspective view of the impact driver of the embodiment of the present application; DETAILED DESCRIPTION

[0034] The above solutions will be further described in connection with specific embodiments. It should be understood that these embodiments are used to explain the present application and not to limit the scope of the present application. The implementation conditions used in the embodiments can be further adjusted according to the specific conditions of the manufacturer, and the implementation conditions not mentioned are usually the conditions in the conventional experiments.

[0035] Next, the impact driver proposed in the present application will be described in connection with the accompanying drawings. Figures 1-10

[0036] Figure 1 A perspective view of the impact driver of the embodiment of the present application; Figure 2 A perspective view of the impact driver of the embodiment of the present application; Figure 3 A perspective view of the impact driver of the embodiment of the present application; Figure 4 A perspective view of the impact driver of the embodiment of the present application; Figure 5 A perspective view of the impact driver of the embodiment of the present application; Figure 6 A perspective view of the impact driver of the embodiment of the present application;​Figure 7 for Figure 6 A schematic diagram of the end cap assembly from another perspective; Figure 8 This is a three-dimensional structural diagram of the cover plate according to an embodiment of this application; Figure 9 This is a three-dimensional structural diagram of the end cap according to an embodiment of this application.

[0037] like Figure 1 As shown, the impact screwdriver 100 includes a handle 110, a housing 140, and a battery pack 120. A base 111 is located on one side of the handle 110, and the battery pack 120 is mounted on the base 111. The battery pack 120 is a lithium-based rechargeable battery or a solid-state battery. The battery pack can output a current greater than 30A when operating. In one embodiment, a display component 112 is provided on the base 111, through which the operating information of the impact screwdriver can be displayed.

[0038] The handle 110 has a housing 140 on the side away from the base 111. A drive unit 170 is housed within the housing 140. The output end of the drive unit 170 is connected to a reduction gearbox 180. The output end of the reduction gearbox 180 has a mounting portion 160 for mounting a working head (not shown). Preferably, the drive unit 170 and the reduction gearbox 180 are coaxially arranged. The drive unit 170 can be a DC brushless motor.

[0039] The handle 110 is equipped with a trigger switch 130, which is connected to the control board via a cable. The trigger switch 130 is used to control the operation of the impact screwdriver.

[0040] An end cap assembly 150 is provided on one side of the housing 140. The end cap assembly 150 has a through hole in its center. A mounting portion 160 passes through this through hole and protrudes from the end cap assembly 150 for mounting a tool head. Mounting holes are spaced apart on the circumference of the end cap assembly 150. A connector uses these mounting holes to fix the end cap assembly 150 to the housing of the gearbox 180. In other embodiments, the mounting portion 160 may not protrude from the end cap assembly 150; the working head passes through the end cap assembly 150 and is mounted on the mounting portion.

[0041] The end cap assembly 150 includes an end cap 151 and a cover plate 152. The cover plate 152 is disposed on the side of the end cap 151 away from the gearbox 180, and the cover plate 152 has a circumferentially extending perforated portion 152a, which is fitted onto the light source. The cover plate 152 has a through hole in its center, through which the mounting portion 160 passes and protrudes from the cover plate 152. The cover plate 152 is made of heat-insulating material. Preferably, the cover plate 152 is made of rubber. The use of heat-insulating material (such as rubber) on the cover plate prevents heat from the gearbox from being conducted to the end cap side during operation, thus preventing burns to the user when changing tool heads.

[0042] The end cap 151 has a protrusion 151f extending axially in the middle of one side, the protrusion 151f is hollow (the protrusion has a through hole extending axially in the cover plate), and the cover plate 152 is fitted onto the protrusion 151f.

[0043] The end cap 151 has a base 151b, one side of which has a circumferentially extending dam. A recess 151a is provided on the dam, and when the end cap 151 is fixed to the gearbox, the recess 151a engages with the gearbox housing. The side of the base 151b away from the protrusion 151f serves as the bottom 151b1 of the base 151b. A protrusion 151f extending axially is located in the middle of one side of the base 151b. The protrusion 151f is hollow (it has a through hole extending axially along the cover plate), and the cover plate 152 is fitted onto the protrusion 151f. A protrusion 151d is provided on the base 151b, spaced apart circumferentially (e.g., evenly spaced) along the protrusion 151f. A light-shielding plate 151e is provided on the protrusion 151d (in other embodiments, the light-shielding plate 151e may be omitted). Preferably, when the end cap 151 is fixed to the gearbox, there is a gap between the bottom of the end cap 151 and the end of the gearbox to prevent heat from the gearbox from being directly conducted to the end cap 151. The end cap 151 has a through hole for transmitting light from a light source or light emitted by the light source. In one embodiment, the end cap 151 is made of engineering plastic or other rigid insulating material. The end cap avoids the risk of burns to the user during operation and also has an anti-static function.

[0044] The end cap assembly 150 is equipped with an illumination module, which includes a light source and a lamp board. In this embodiment, the illumination module includes a lamp board 153 and LED beads / light sources 154 disposed on one side of the lamp board 153. The LED beads / light sources 154 are attached to the lamp board 153. Preferably, the lamp board 153 has at least one notch 153a (e.g., two, three, four notches, etc.), which can be used to engage with a protrusion 181 on the gearbox housing. The lamp board can be a PCB (rigid printed circuit board) or an FPC (flexible printed circuit board). The lamp board 153 is fixed to the bottom 151b of the end cap 151 by an adhesive (e.g., hot melt adhesive). The lamp board 153 is C-shaped or partially C-shaped. The lamp board 153 is connected to a control board via a cable. The light emitted by the LED beads / light sources 154 is directed towards the working head, facilitating the user's alignment of the workpiece during operation. In this embodiment, the lighting module includes three light sources, and the lamp panel is C-shaped with the light sources evenly spaced on the lamp panel. By optimizing the structure of the lighting module, the lamp panel is mounted on the base of the end cover. This design avoids the heat from the gearbox being directly conducted to the lighting module during operation, thus improving the reliability of the lighting module.

[0045] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent transformation or modification made in the spirit and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A percussion driver, characterized in that, The utility model relates to a portable electric tool, comprising: a handle, a casing and a battery pack, one side of the handle has a base, the base is installed the battery pack, the side of the handle away from the base has a casing, one side of the casing is provided with an end cover assembly, the end cover assembly away from the casing side is provided with an illumination module, the illumination module comprises a light source and a lamp plate, the light source is attached to one side of the lamp plate, the end cover assembly comprises an end cover and a cover plate, and the cover plate is arranged on the side of the end cover away from the reduction box, the side of the lamp plate attached to the light source is fixed to the bottom of the end cover through an adhesive, and the bottom of the end cover and the end of the reduction box have a gap; the casing is provided with a driving device, the output end of the driving device is connected to the reduction box, the output end of the reduction box is provided with a mounting portion, the mounting portion passes through the end cover assembly and protrudes from the end cover assembly, and is used for mounting a working head, or the working head passes through the end cover assembly and is mounted on the mounting portion.

2. The impact driver of claim 1, wherein the lamp plate is in a C shape or at least partially in a C shape.

3. The impact driver of claim 1, wherein the number of the light sources is three, and the light sources are arranged on the lamp plate at intervals.

4. The impact driver of claim 1, wherein the lamp plate is a PCB lamp plate or an FPC lamp plate, and at least one notch is arranged on the lamp plate, the notch is used for clamping with a protrusion on the casing of the reduction box.

5. The impact driver of claim 1, wherein the cover plate is made of rubber.

6. The impact driver of claim 1, wherein a trigger switch is arranged on the handle, the trigger switch is connected to a control board through a cable, and the trigger switch is used for controlling the impact driver, a display component is arranged on the base, and the display component is electrically connected to the control board.

7. The impact driver of claim 1, wherein the battery pack is a lithium-based rechargeable battery or a solid-state battery, and the output current of the battery pack during work is greater than 30 A.

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