Sanding machine

Abstract

The utility model discloses a sanding machine which comprises a machine shell, and the machine shell comprises a shell top, a shell bottom and a contraction part arranged between the shell top and the shell bottom; the bottom plate assembly comprises a bottom plate; the driving assembly comprises a motor, and the motor is used for driving the bottom plate; a lighting device including a light emitting portion; the light-emitting part is arranged on the machine shell and located above the contraction part, and the bottom plate is within the irradiation range of the light-emitting part. By means of the arrangement, the sanding machine can meet the lighting requirement of a user at the same time, and the application scene of the sanding machine is widened.

Description

Technical Field

[0001] This application relates to a power tool, and more particularly to a sander. Background Art

[0002] A sander in the related art is a power tool for sanding operations. It is often used to sand uneven or uneven-thickness walls, tabletops, etc. to obtain a surface with a target smoothness. A sander is also known as a belt sander, a grinder, or a polishing machine, etc. A handheld sander is an important classification of sanders and is widely used in various industries due to its small size and easy portability.

[0003] When the sander is working, it usually relies on an external light source for illumination. For some working environments with dim light, the sander is also expected to be able to provide or supplement light by itself. Some sanders set the lighting device near the bottom plate. With such a setting, the lighting device is far from the top of the shell, and it is not easy to observe and operate the operation keys of the sander on the top of the shell.

[0004] This section provides background information related to this application, and these background information are not necessarily prior art. Summary of the Utility Model

[0005] An object of this application is to solve or at least mitigate part or all of the above problems. To this end, an object of this application is to provide a sander.

[0006] To achieve the above object, this application adopts the following technical solutions:

[0007] A sander includes: a housing, the housing includes a top of the shell, a bottom of the shell, and a contraction part provided between the top of the shell and the bottom of the shell; a bottom plate assembly including a bottom plate; a drive assembly including a motor, the motor being used to drive the bottom plate; a lighting device including a light-emitting part; the light-emitting part is provided on the housing and above the contraction part, and the bottom plate is within the irradiation range of the light-emitting part.

[0008] In some embodiments, the light-emitting part is provided at the junction of the contraction part and the top of the shell.

[0009] In some embodiments, the lighting device is detachably provided relative to the housing.

[0010] In some embodiments, the light-emitting part is one or a combination of at least two of a point light source, a surface light source, and an LED light source.

[0011] In some embodiments, the lighting device can be turned on when the motor is turned on, and the lighting device can be turned off after a preset time when the motor stops rotating.

[0012] In some embodiments, the light-emitting part can emit light rays of at least two colors, and / or, the lighting device is arranged to be able to adjust the brightness of the light-emitting part according to the ambient brightness.

[0013] In some embodiments, the lighting device can perform at least one of safety indication, fault indication, battery pack power reminder, or image projection.

[0014] In some embodiments, the lighting device further includes a switch assembly, and the switch assembly can: turn on and off the light-emitting part, and / or, adjust the brightness of the light-emitting part, and / or, select the light-emitting color of the light-emitting part, and / or, trigger the light-emitting part to project an image, and / or, select the light-emitting mode of the light-emitting part.

[0015] In some embodiments, the lighting device is arranged to be able to transmit control signals to and from a user terminal to adjust the light-emitting parameters of the light-emitting part.

[0016] In some embodiments, the overall height of the sander is less than or equal to 120 mm.

[0017] A sander, comprising: a housing; a bottom plate assembly including a bottom plate; a drive assembly including a motor for driving the bottom plate; a dust passage disposed within the housing, where dust is collected from the bottom plate and flows into the dust passage, and then through the dust passage into a dust collection device; a lighting device including a light-emitting part; the light-emitting part is disposed in the dust collection device.

[0018] In some embodiments, the light-emitting part is arranged circumferentially around the dust collection device.

[0019] In some embodiments, the light-emitting part is disposed inside and / or outside the dust collection device.

[0020] In some embodiments, the dust collection device is detachably connected to the housing, and the dust collection device has an assembled state assembled to the housing. When the dust collection device is in the assembled state, the lighting device is turned on.

[0021] In some embodiments, the overall height of the sander is less than or equal to 120 mm.

[0022] The advantages of the present application are as follows: By arranging the lighting device at the position of the contraction part between the top and bottom of the housing, the sander can work by its own emitted light source in a dim environment, and the light emitted by the lighting device arranged at the contraction part has a good lighting effect. For a sander with a relatively short overall height, arranging the lighting device at the contraction part can make full use of the housing space, neither interfering with the hand grip nor interfering with the user's operation of the main switch. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of a sander provided by the present application;

[0024] Figure 2 is an exploded structural schematic diagram of a sander provided by the present application Figure 1 ;

[0025] Figure 3 is an exploded structural schematic diagram of a sander provided by the present application Figure 2 ;

[0026] Figure 4 is an exploded structural schematic diagram of a sander provided by the present application Figure 3 ;

[0027] Figure 5 is a schematic diagram of a partial structure of a sander provided by the present application;

[0028] Figure 6 is a front view of a partial structure of a sander provided by the present application;

[0029] Figure 7 is a top view of a partial structure of a sander provided by the present application;

[0030] Figure 8 is a schematic structural diagram of a dust collection device and a filter element provided by the present application;

[0031] Figure 9 is an exploded structural schematic diagram of a dust collection device and a filter element provided by the present application;

[0032] Figure 10 is a schematic structural diagram of a dust collection device provided by the present application;

[0033] Figure 11 is a front view of a dust collection device provided by the present application;

[0034] Figure 12 is a schematic structural diagram of another dust collection device provided by the present application;

[0035] Figure 13 is a front view of another dust collection device provided by the present application;

[0036] Figure 14 is a schematic structural diagram of yet another dust collection device provided by the present application;

[0037] Figure 15 is a schematic diagram of a partial structure of yet another dust collection device provided by the present application Figure 1 ;

[0038] Figure 16It is a cross-sectional view of another dust collection device provided by the present application;

[0039] Figure 17 It is a schematic diagram of a partial structure of another dust collection device provided by the present application Figure 2 ;

[0040] Figure 18 It is a schematic diagram of a partial structure of another dust collection device provided by the present application Figure 3 ;

[0041] Figure 19 It is a front view of another sander provided by the present application;

[0042] Figure 20 It is a side view of another sander provided by the present application;

[0043] Figure 21 It is a schematic structural diagram of another sander provided by the present application.

[0044] In the figure:

[0045] 100, sander;

[0046] 10, housing; 101, first mating surface; 102, top of the housing; 103, bottom of the housing; 104, contraction part; 11, gripping part; 12, dust channel; 121, dust inlet; 122, dust outlet; 13, mounting plate; 131, first mounting surface; 132, second mounting surface; 14, ball snap;

[0047] 20, bottom plate assembly; 21, bottom plate;

[0048] 30, drive assembly; 31, motor; 32, control board; 33, speed regulation assembly; 34, air flow element;

[0049] 40, main switch assembly;

[0050] 51, dust collection device; 510, second mating surface; 511, dust collection chamber; 512, air inlet; 513, air outlet; 514, cyclone dust collection assembly; 5141, dust discharge port; 52, filter element; 521, bracket; 522, filter paper;

[0051] 60, energy source;

[0052] 70, lighting device; 71, light emitting part. Detailed implementation manners

[0053] Before explaining any implementation manner of the present application in detail, it should be understood that the present application is not limited to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0054] In this application, the terms "comprise", "include", "have" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element.

[0055] In this application, the term "and / or" describes the relationship between associated objects and indicates that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this application, the character " / " generally indicates that the associated objects before and after are in an "and / or" relationship.

[0056] In this application, the terms "connect", "combine", "couple", "mount" can be direct connection, combination, coupling or mounting, or can be indirect connection, combination, coupling or mounting. Among them, by way of example, direct connection means that two parts or components are connected together without the need for an intermediate member, and indirect connection means that two parts or components are respectively connected to at least one intermediate member, and these two parts or components are connected through the intermediate member. In addition, "connect" and "couple" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0057] In this application, those of ordinary skill in the art will understand that relative terms used in connection with a quantity or condition (such as "about", "approximately", "substantially", etc.) are intended to include the stated value and have the meaning indicated by the context. For example, such relative terms at least include the degree of error associated with the measurement of a particular value, tolerances resulting from manufacturing, assembly, use in relation to a particular value, etc. Such terms should also be considered to disclose a range defined by the absolute values of two endpoints. Relative terms can refer to a plus or minus of a certain percentage (such as 1%, 5%, 10% or more) of the indicated value. A numerical value without a relative term should also be disclosed as a particular value with a tolerance. In addition, when expressing a relative angular positional relationship (such as substantially parallel, substantially perpendicular), "substantially" can refer to a plus or minus of a certain number of degrees (such as 1 degree, 5 degrees, 10 degrees or more) based on the indicated angle.

[0058] In this application, those of ordinary skill in the art will understand that the functions performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0059] In this application, the orientation terms such as "upper", "lower", "left", "right", "front", and "rear" are described based on the orientation and positional relationship shown in the drawings, and should not be construed as a limitation on the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that one component is connected "above" or "below" another component, it can not only be directly connected "above" or "below" another component, but also be indirectly connected "above" or "below" another component through an intermediate component. It should also be understood that the orientation terms such as the upper side, the lower side, the left side, the right side, the front side, and the rear side not only represent the positive orientation, but can also be understood as the side orientation. For example, the lower side can include directly below, lower left, lower right, lower front, and lower rear, etc.

[0060] As Figures 1 to 7 shown, the sander 100 includes a housing 10, a bottom plate assembly 20, a drive assembly 30, a main switch assembly 40, a dust collection device 51, and an energy source 60. The energy source 60 is used to supply energy to the sander 100. The energy source 60 can be alternating current or direct current such as a battery pack and other portable mobile power sources. The dust collection device 51 can be a dust collection bag, a dust collection box, or the sander 100 can be connected to a vacuum cleaner, and the vacuum cleaner is used as the dust collection device 51. In this embodiment, taking the dust collection device 51 as a dust collection box as an example, the dust collection device 51 is in a box shape, further enhancing the integrity with the housing 10.

[0061] The dust collection device 51 is detachably installed on the housing 10, facilitating the dumping of the dust in the dust collection device 51. The dust collection device 51 has an assembled state assembled with the housing 10 and a disassembled state separated from the housing 10. When the dust collection device 51 is in the assembled state, the housing 10 and the dust collection device 51 jointly form the outer shape part of the sander 100, with strong integrity, facilitating use, storage, and transportation. For the dust collection device 51, in order to form an integral whole with the housing 10, the dust collection device 51 can be set in an arc shape. When the dust collection device 51 is in the assembled state, the top surface, bottom surface, and inner surface of the dust collection device 51 are basically fitted with the housing 10. A broken line shape approximated by multiple straight lines spliced together into an arc shape is also considered to be the same as the technical concept of this application and is also covered within the protection scope of this application.

[0062] The housing 10 and / or the dust collection device 51 form a gripping portion 11 for the user to grip. The main switch assembly 40 is arranged on the front side of the housing 10 and the gripping portion 11, enabling the user to relatively conveniently trigger the main switch assembly 40 when gripping the gripping portion 11. A receiving portion is formed on the rear side of the housing 10 for installing an energy source 60 such as a battery pack.

[0063] The bottom plate assembly 20 is disposed at the bottom of the housing 10, and the drive assembly 30 is disposed within the housing 10. The bottom plate assembly 20 includes a bottom plate 21, and the bottom plate 21 is connected to a working accessory; the drive assembly 30 includes a motor 31, and the motor 31 is used to drive the bottom plate 21, so that the bottom plate 21 drives the working accessory to swing relative to the housing 10. The bottom plate 21 includes an upper surface and a lower surface which are oppositely arranged, and the lower surface is used for mounting the working accessory, and the working accessory can be a functional element such as sandpaper. When the bottom plate 21 performs an eccentric motion, the sandpaper can continuously rub on the surface of the workpiece to be ground, so as to realize functions such as grinding and polishing of the workpiece to be ground.

[0064] The sander 100 further includes a dust passage 12, the dust passage 12 is disposed within the housing 10, dust is collected from the bottom plate 21 and flows into the dust passage 12, and then flows into the dust collection device 51 through the dust passage 12. Specifically, through holes are provided on the bottom plate 21, the through holes penetrate the upper surface and the lower surface, and the dust enters the dust passage 12 through the through holes.

[0065] The motor 31 includes a motor shaft for outputting power, and the motor shaft rotates around the motor axis. In this embodiment, the motor axis extends substantially in the vertical direction. The sander 100 further includes an air flow element 34 that can be driven by the motor 31, the air flow element 34 can be driven by the motor 31 to rotate around the central axis, and an air flow can be generated when the air flow element 34 rotates, and the air flow drives the dust to be collected from the bottom plate 21 and flow into the dust passage 12, and then flows into the dust collection device 51 through the dust passage 12.

[0066] A control board 32 and a speed regulation assembly 33 are further disposed within the housing 10, the control board 32 is electrically connected to the motor 31, the speed regulation assembly 33 is electrically connected to the control board 32, the rotation speed of the motor 31 can be controlled through the speed regulation assembly 33, and the speed regulation assembly 33 can be controlled through a speed regulation button on the housing 10.

[0067] The dust passage 12 includes a dust inlet 121 and a dust outlet 122, the inhaled dust flows from the dust inlet 121 to the dust outlet 122, in the vertical direction, the dust outlet 122 is higher than the dust inlet 121; the bottom plate 21 extends in a first plane, and the projection of the dust passage 12 on the first plane is substantially arc-shaped to reduce the resistance of dust flow and achieve smooth dust collection. It should be noted that the arc involved in this application can be a circular arc along the inner contour of the housing, or other arcs such as a curve or an involute that are non-circular arcs.

[0068] For the dust channel 12, the smaller the height difference between the dust outlet 122 and the dust inlet 121, the smaller the resistance to the airflow. However, the dust outlet 122 is connected to the dust collection device 51. The higher the dust outlet 122, the less likely the dust collection device 51 is to be blocked by dust. The height difference H1 between the dust outlet 122 and the dust inlet 121 in the vertical direction is greater than or equal to 9 mm and less than or equal to 41 mm. In some embodiments, the height difference H1 between the dust outlet 122 and the dust inlet 121 in the vertical direction is greater than or equal to 15 mm and less than or equal to 30 mm. In some embodiments, the height difference H1 between the dust outlet 122 and the dust inlet 121 in the vertical direction is equal to 27 mm.

[0069] The included angle formed by the line connecting the center point of the dust inlet 121 to the bottom plate 21 and the line connecting the center point of the dust outlet 122 to the bottom plate 21 is the first angle α. The first angle α is greater than or equal to 60 degrees and less than or equal to 120 degrees to reduce the resistance of the airflow flowing in the dust channel 12. In some embodiments, the first angle α is greater than or equal to 80 degrees and less than or equal to 100 degrees. In some embodiments, the first angle α is equal to 60 degrees, 70 degrees, 80 degrees, 90 degrees, 100 degrees, 110 degrees or 120 degrees. In one embodiment, both the dust inlet 121 and the dust outlet 122 of the dust channel 12 are located within the housing 10. In one embodiment, the projection of the dust outlet 122 of the dust channel 12 in the first plane does not exceed the boundary range of the bottom plate 21. In one embodiment, the bottom plate 21 is substantially rectangular, and the center point of the bottom plate 21 is the center point of the rectangular surface.

[0070] In some embodiments, the dust channel 12 extends spirally between the dust inlet 121 and the dust outlet 122, causing the dust channel 12 to rise gently and reducing the airflow resistance. In some embodiments, the dust channel 12 extends linearly between the dust inlet 121 and the dust outlet 122.

[0071] The projection of the dust channel 12 in the first plane is the first projection, and the first projection is completely located within the boundary of the bottom plate 21, making the structure compact and the center of gravity stable. The projection of the dust collection device 51 in the first plane is the second projection, and the second projection is completely located within the boundary of the bottom plate 21, making the structure compact and the center of gravity stable. There may be an overlapping part between the first projection and the second projection. The area of the second projection exceeds half of the area of the bottom plate 21.

[0072] A first electrostatic conduction component is provided on the dust collection device 51, and the first electrostatic conduction component is used to conduct the static electricity of the dust collection device. The first electrostatic conduction component can be a metal sheet, such as a copper sheet.

[0073] The sanding machine 100 further includes a second electrostatic conduction component, which includes a first conductive member and a second conductive member, wherein two ends of the first conductive member are respectively connected to the dust duct 12 and the stator core of the motor 31, and two ends of the second conductive member are respectively connected to the stator core and the housing 10. Since the housing 10 is held by a human hand, the static electricity on the dust duct 12 is conducted away by the human hand through the second electrostatic conduction component.

[0074] like Figure 8 and Figure 9 As shown, the dust collecting device 51 has a dust collecting chamber 511 and an air inlet 512 and an air outlet 513 connected to the dust collecting chamber 511. The air inlet 512 is connected to the dust outlet 122 of the dust duct 12, so that dust can enter the dust collecting device 51 from the dust duct 12. The air outlet 513 is connected to the outside world. After the airflow carrying dust enters the dust collecting device 51, the dust falls into the dust collecting chamber 511 under the action of its own gravity, and the airflow flows out from the air outlet 513.

[0075] The air inlet 512 is connected to the dust outlet 122 of the dust duct 12, and the area of ​​the air inlet 512 is less than or equal to 400 square millimeters, ensuring sufficient air intake while making full use of the space. In some embodiments, the area of ​​the air inlet 512 is less than or equal to 350 square millimeters. In some embodiments, the area of ​​the air inlet 512 is less than or equal to 300 square millimeters. In some embodiments, the area of ​​the air inlet 512 is equal to 250 square millimeters, 260 square millimeters, or 270 square millimeters.

[0076] A filter 52 is provided at the air outlet 513 of the dust collecting device 51. If a small amount of dust flows out from the air outlet 513 along with the air flow, the filter 52 can filter the dust to prevent dust from overflowing. The filter 52 includes a bracket 521 and a filter paper 522. The filter paper 522 is installed on the bracket 521, and the bracket 521 is detachably connected to the air outlet 513. The bracket 521 supports the filter paper 522. The bracket 521 is easy to install and disassemble. When replacing the filter paper 522, the bracket 521 can be disassembled. After replacing the filter paper 522, the bracket 521 can be installed. The bracket 521 and the dust collecting device 51 can be snap-fitted.

[0077] like Figure 10 As shown, the air outlet 513 is provided with one and is located at the top of the dust collecting device 51. Figure 11 As shown, in the vertical direction, the bottom edge of the air inlet 512 is higher than the bottom surface of the dust collecting chamber 511 and the height difference H2 between the two is greater than or equal to 5 mm and less than or equal to 20 mm, which prevents the dust in the dust collecting chamber 511 from overflowing from the air inlet 512 and preventing the air inlet 512 from being blocked, so that the dust collecting chamber 511 has a certain space and the dust collection amount is increased.

[0078] like Figure 12and Figure 13 As shown in Figure 13 , there are at least two air outlets 513 provided, which increases air permeability and air discharge volume, making dust collection smoother. The air outlets 513 can be arranged on the top or side of the dust collection device 51. Specifically, the air outlets 513 are located on the side of the dust collection device 51 close to the casing 10, that is, the air outlets 513 are arranged on the inner side surface of the dust collection device 51, making the outer surface of the dust collection device 51 flat.

[0079] A filter element 52 is provided at each air outlet 513, and the filter element 52 can filter dust to prevent dust from overflowing.

[0080] In the layout where the air outlet 513 is located on the side of the dust collection device 51 close to the casing 10, in order to facilitate air outlet, a gap is formed between the dust collection device 51 and the casing 10, and the gap connects the air outlet 513 with the outside. As Figure 2 shown in Figure 2 , the casing 10 includes a first mating surface 101, and the inner side surface of the dust collection device 51 is the second mating surface 510. When the dust collection device 51 is assembled with the casing 10, a gap is formed between the first mating surface 101 and the second mating surface 510 to facilitate air outlet of the air outlet 513. The size of the gap is 1 mm to 3 mm, preferably 2 mm.

[0081] As Figure 2 shown in Figure 2 , the casing 10 includes a mounting plate 13, and the mounting plate 13 has a first mounting surface 131. The dust collection device 51 is detachably connected to the first mounting surface 131, and the first mounting surface 131 is a mirror-finished surface, which reduces the friction during assembly and facilitates the disassembly and assembly of the dust collection device 51.

[0082] The dust collection device 51 and the casing 10 can be snap-connected. Specifically, a ball snap 14 can be used for connection. The ball snap 14 is arranged on the first mounting surface 131. During installation, the dust collection device 51 is pushed towards the casing 10, so that the dust collection device 51 slides along the first mounting surface 131 until it is snap-connected to the ball snap 14. Since the first mounting surface 131 is a mirror-finished surface, the friction during assembly is reduced.

[0083] The mounting plate 13 further includes a second mounting surface 132. The second mounting surface 132 is located on the outer periphery of the first mounting surface 131 and is lower than the first mounting surface 131. The roughness of the second mounting surface 132 is higher than that of the first mounting surface 131. The dust collection device 51 abuts against the second mounting surface 132, increasing the contact area and friction between the dust collection device 51 and the casing 10, making the connection firm.

[0084] As Figures 14 to 18As shown, in one embodiment, the dust collection device 51 has a dust collection chamber 511. A cyclone dust collection assembly 514 is provided in the dust collection chamber 511. The cyclone dust collection assembly 514 has an air inlet 512, a dust discharge port 5141, and an air outlet 513. The air inlet 512 is communicated with the dust outlet 122, the dust discharge port 5141 is communicated with the dust collection chamber 511, and the air outlet 513 is communicated with the outside. Due to the setting of the cyclone dust collection assembly 514, there is no need to set the air inlet 512 higher than the bottom surface of the dust collection chamber 511, and the dust in the dust collection chamber 511 will not overflow from the air inlet 512.

[0085] The working principle of the cyclone dust collection assembly 514 is a conventional technology and will not be elaborated here. The airflow with dust rises after entering from the air inlet 512. Under the action of the cyclone dust collection assembly 514, the dust falls from the dust discharge port 5141, and the airflow is discharged from the air outlet 513. The air outlet 513 can be provided on the outer side wall of the dust collection device 51. Therefore, the top of the dust collection device 51 does not need to be opened and can be sealed.

[0086] As Figure 19 and Figure 20 As shown, the sander 100 further includes a lighting device 70. The housing 10 includes a housing top 102, a housing bottom 103, and a contraction part 104 provided between the housing top 102 and the housing bottom 103. The contraction part 104 is a part of the housing 10 that contracts inward. In the field of sanders, the contraction part 104 is often used for users to hold, thus forming a holding area different from the housing top 102. A transition part 105 is formed during the upward extension of the contraction part 104 to the housing top 102. When the user holds the contraction part 104, the tiger's mouth can hold the transition part 105, and the fingers can rest on the housing top 102.

[0087] Nowadays, with the miniaturization of the sander 100, the height of the sander 100 is getting lower and lower. The contraction part 104 and the transition part 105 reduce the need for holding, enabling the user to obtain a lower holding position when holding the hand on the housing top 102, thus holding the sander 100 firmly. At the same time, the lighting requirement of the sander 100 is gradually emerging. The sander 100 of the present application is provided with a lighting device 70 to meet the use requirement in insufficient light.

[0088] The lighting device 70 includes a light-emitting part 71. The light-emitting part 71 is provided on the housing 10 and above the contraction part 104. The bottom plate 21 is within the irradiation range of the light-emitting part 71. The setting position of the light-emitting part 71 makes the bottom plate 21 within the irradiation range of the light-emitting part 71. Since the grinding part on the bottom plate 21 grinds the workpiece to be ground, during operation, the working area is within the irradiation range of the light-emitting part 71, facilitating the operator's observation and improving the use experience.

[0089] In some embodiments, the light-emitting part 71 is disposed at the junction of the contraction part 104 and the top shell 102. In this embodiment, the lighting device 70 is located below the main switch assembly 40 and above the contraction part 104. It can be understood that the light-emitting part 71 emits light downward or obliquely downward to illuminate the area where the bottom plate 21 is located.

[0090] The lighting device 70 is detachably disposed relative to the housing 10, facilitating maintenance. The connection between the light-emitting part 71 and the housing 10 can be a screw connection, a snap connection, or a magnetic attraction connection.

[0091] In one embodiment, the overall height of the sander 100 is less than or equal to 130 mm. In one embodiment, the overall height of the sander 100 is less than or equal to 120 mm. In one embodiment, the overall height of the sander 100 is less than or equal to 110 mm. In one embodiment, the overall height of the sander 100 is less than or equal to 100 mm. In some embodiments, the overall height of the sander 100 can be 98 mm, 103 mm, 105 mm, 108 mm, 112 mm, etc. The overall height of the sander 100 here refers to the distance between the topmost part of the top shell 102 and the bottommost part of the bottom plate 21, excluding the distance that the battery pack protrudes from the top shell 102. With such a setting, when the lighting device 70 is disposed at the transition part 105 for a sander 100 with a relatively short height, there are greater space advantages.

[0092] In some embodiments, the battery pack of the sander 100 provides electrical energy for the lighting device 70. In some embodiments, the sander 100 further includes a lighting power source, which supplies power to the lighting device 70, and the lighting power source is a power supply component independent of the battery pack. Optionally, the lighting power source can be a battery, a storage battery, etc. that is detachably connected to the sander 100. In some embodiments, the sander 100 further includes a self-power generation module, and the self-power generation module is a component that can generate electricity by sunlight. The module that generates electricity by sunlight is an existing component, so its working principle and detailed structure will not be introduced in detail here.

[0093] The light-emitting part 71 is one or a combination of at least two of a point light source, a surface light source, and an LED light source. The light-emitting part 71 can be arranged in a ring shape or a rectangular shape to increase the light-emitting area.

[0094] The light-emitting part 71 can be provided with one or more. When multiple light-emitting parts 71 are provided, each light-emitting part 71 can be located at a different position, and each light-emitting part 71 can be turned on or off simultaneously, or can be independently turned on or off. In some embodiments, the lighting device 70 includes at least two light-emitting parts 71. At least two light-emitting parts 71 can be turned on separately. Optionally, one of the light-emitting parts 71 can be set to the low-beam mode, and one light-emitting part 71 can be set to the high-beam mode, so as to meet different usage requirements. Of course, the two light-emitting parts 71 can also be turned on simultaneously, so that the lighting device 70 has higher intensity and a larger illumination range. It should be noted that the low-beam mode and the high-beam mode are collectively referred to as the light-emitting modes of the light-emitting part 71. Optionally, different light-emitting parts 71 can be provided at different positions of the sander 100, so that while the lighting device 70 illuminates the bottom plate 21 of the sander 100, it can also illuminate the front, side, and rear of the sander 100, thereby preventing the user from bumping due to unclear surrounding environment.

[0095] The lighting device 70 can be turned on when the motor 31 is turned on, and the lighting device 70 can be turned off after a preset time when the motor 31 stops rotating. By linking the lighting device 70 with the motor 31, the intelligent turn-on and turn-off of the lighting device 70 are realized, and the user experience is improved. Optionally, the preset time can be 3s, 5s, 7s, etc., and no specific limitation is made here. In some embodiments, the user can set the lighting device 70 to select an appropriate preset time.

[0096] The light-emitting part 71 can emit light of at least two colors. Optionally, the light-emitting part 71 can emit white light, and the white light has better brightness and is suitable for use in normal weather. The light-emitting part 71 can emit yellow light, and the yellow light has stronger penetrability and is more suitable for use in foggy weather. Optionally, the light-emitting part 71 can emit red light. When working under complex construction conditions, turning on the red light can play a warning role for the outside world. In other embodiments, the colors emitted by the light-emitting part 71 are not limited to the above colors. Optionally, the lighting device 70 can include at least two light-emitting parts 71, and each light-emitting part 71 emits light of one color correspondingly.

[0097] In some embodiments, the lighting device 70 is configured to be able to adjust the light color of the light-emitting part 71 according to the ambient brightness. The lighting device 70 can be provided with a light sensing device. When the ambient brightness drops to the first threshold and is recognized by the light sensing device, the light-emitting part 71 switches from the first color to the second color.

[0098] The lighting device 70 is configured to be able to adjust the brightness of the light-emitting part 71 according to the ambient brightness. In some embodiments, the lighting device 70 may be provided with a light-sensing device. When the ambient brightness drops to a first threshold and is recognized by the light-sensing device, the light-emitting part 71 automatically lights up. In some embodiments, when the ambient brightness rises to a second threshold and is recognized by the light-sensing device, the brightness of the light-emitting part 71 is automatically adjusted to become dimmer.

[0099] In some embodiments, the light-emitting part 71 has at least two brightness levels. When the user presses the button for the first time, the light-emitting part 71 emits light at a first brightness level. When the user presses the button for the second time, the light-emitting part 71 emits light at a second brightness level. When the user presses the button for the third time, the light-emitting part 71 turns off.

[0100] The lighting device 70 is capable of performing at least one of safety indication, fault indication, battery pack power reminder, or projecting an image. Optionally, the light-emitting part 71 can blink at different frequencies and respectively indicate safety indication, fault indication, and power reminder at different blinking frequencies. It can be understood that the light-emitting part 71 can also indicate safety indication, fault indication, and power reminder respectively by emitting light of different colors. Optionally, the light-emitting part 71 is also capable of projecting an image, which can be the brand logo, model, etc. of the product, thereby being able to achieve a certain promotional effect.

[0101] The lighting device 70 further includes a switch assembly, which can: turn on and off the light-emitting part 71, and / or adjust the brightness of the light-emitting part 71, and / or select the light-emitting color of the light-emitting part 71, and / or trigger the light-emitting part 71 to project, and / or select the light-emitting mode of the light-emitting part 71. In one embodiment, the maximum distance between the switch assembly and the light-emitting part 71 is less than or equal to 5 cm, so as to be able to shorten the length of the cable connecting the switch assembly and the light-emitting part 71, and further make the cables inside the sander 100 regular and not easily damaged. The switch assembly can be located above the holding part 11 for easy operation.

[0102] In some embodiments, the lighting device 70 is configured to be able to transmit control signals to and from a user terminal to adjust the light-emitting parameters of the light-emitting part 71. Specifically, the lighting device 70 further includes a communication module. The user can communicate with the communication module through a terminal device such as a mobile phone to control the light-emitting part 71. Optionally, the communication module can be a Bluetooth module, a Wi-Fi module, etc. The light-emitting parameters include but are not limited to turning on and off the light-emitting part 71, adjusting the brightness of the light-emitting part 71, selecting the light-emitting color of the light-emitting part 71, triggering the light-emitting part 71 to project, selecting the light-emitting mode of the light-emitting part 71, adjusting the stroboscopic frequency of the light-emitting part 71, etc. The user terminal can be a portable terminal such as a tablet or a mobile phone to facilitate adjusting the light-emitting parameters of the light-emitting part 71.

[0103] In Figure 19and Figure 20 In the solution of the lighting device 70 disclosed, the light-emitting part 71 can protrude from the outer surface of the housing 10, can also be embedded inside the housing 10 so as to be substantially flush with the outer surface of the housing 10, or can also be slightly lower than the outer surface of the housing 10, and no limitation is made here.

[0104] As Figure 21 shown, in the case where the sander 100 includes the dust collection device 51, the lighting device 70 can include the light-emitting part 71, and the light-emitting part 71 is arranged on the dust collection device 51, making full use of the space of the dust collection device 51. Since the outer peripheral surface size of the dust collection device 51 is relatively large, arranging the light-emitting part 71 on the dust collection device 51 is less likely to be blocked. The specific structure of the dust collection device 51 can refer to the relevant content of the above-mentioned dust collection device 51. The specific structure of the light-emitting part 71 can refer to the relevant content of the above-mentioned light-emitting part 71.

[0105] In some embodiments, the light-emitting part 71 is arranged circumferentially around the dust collection device 51, so that the light has a relatively large coverage area, increasing the irradiation range and ensuring the light uniformity.

[0106] In some embodiments, the light-emitting part 71 is arranged inside and / or outside the dust collection device 51. The light-emitting part 71 can be arranged on the outer peripheral surface of the dust collection device 51, can also be arranged on the inner peripheral surface of the dust collection device 51, or light-emitting parts 71 are arranged on both the outer peripheral surface and the inner peripheral surface of the dust collection device 51.

[0107] In some embodiments, part of the light-emitting part 71 is arranged on the dust collection device 51, and part of the light-emitting part 71 is arranged on the housing 10.

[0108] In some embodiments, the dust collection device 51 is detachably connected to the housing 10, and the dust collection device 51 has an assembled state assembled to the housing 10. When the dust collection device 51 is in the assembled state, the lighting device 70 is turned on. By linking the dust collection device 51 with the lighting device 70, the intelligent turn-on of the lighting device 70 is realized, improving the user experience. The dust collection device 51 has a disassembled state of being separated from the housing 10. In some embodiments, when the dust collection device 51 is in the disassembled state, the lighting device 70 is turned off.

[0109] In some embodiments, different lighting devices 70, or different light-emitting parts 71, can be separately arranged on the contraction part 104 and the dust collection device 51 respectively.

[0110] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form. Any technical solutions obtained by using equivalent replacement or equivalent transformation fall within the protection scope of the present application.

Claims

1. A sanding machine, comprising: A housing, the housing comprising a housing top, a housing bottom, and a contraction portion disposed between the housing top and the housing bottom; A base plate assembly, including a base plate; A driving assembly, comprising a motor, wherein the motor is used to drive the base plate; A lighting device, comprising a light emitting portion; The invention is characterized in that the light emitting portion is arranged on the housing and is located above the shrinking portion, and the bottom plate is within the irradiation range of the light emitting portion.

2. The sanding machine according to claim 1, characterized in that: The light emitting portion is arranged at the junction of the contraction portion and the top of the shell.

3. The sanding machine according to claim 1, characterized in that: The lighting device is detachably mounted relative to the housing.

4. The sanding machine according to claim 1, characterized in that: The light emitting portion is one of a point light source, a surface light source, and an LED light source, or a combination of at least two of them.

5. The sanding machine according to claim 1, characterized in that: The lighting device can be turned on when the motor is turned on, and the lighting device can be turned off after a preset time when the motor stops.

6. The sanding machine according to claim 1, characterized in that: The light emitting portion can emit light of at least two colors, and / or the lighting device is configured to adjust the brightness of the light emitting portion according to ambient brightness.

7. The sanding machine according to claim 1, characterized in that: The lighting device can provide at least one of safety indication, fault indication, battery pack power reminder or projected image.

8. The sanding machine according to claim 1, characterized in that: The lighting device also includes a switch component, which can: turn on and off the light-emitting part, and / or adjust the brightness of the light-emitting part, and / or select the light color of the light-emitting part, and / or trigger the projection of the light-emitting part, and / or select the light-emitting mode of the light-emitting part.

9. The sanding machine according to claim 1, characterized in that: The lighting device is configured to transmit a control signal to a user terminal to adjust the light-emitting parameters of the light-emitting portion.

10. The sanding machine according to claim 1, characterized in that The overall height of the sanding machine is less than or equal to 120 mm.

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