A sander

Abstract

The utility model discloses a sanding machine, including the casing subassembly, motor, bottom plate, dust removal fan blade, dust absorption box and battery package. Its key points are: the casing subassembly still includes the air duct box. The lower portion front of right casing body is equipped with the dust outlet to the front upper side. The air duct box is fixedly arranged in the lower portion of casing, and the front of air duct box is equipped with the air outlet opening upward, and the air outlet extends out of casing upward from the dust outlet of right casing body. The downside right part of dust absorption box is equipped with the dust collection port matched with the air outlet of air duct box. The dust absorption box is fixedly arranged on the front of casing from top to bottom, and the air outlet of air duct box extends into the dust collection port. The motor is fixedly arranged in casing, and the motor shaft extends downward, and the dust removal fan blade is fixedly arranged on the lower end of motor shaft of motor and located in the air duct box. The downside of dust removal fan blade is equipped with eccentric wheel part, and the bottom plate is connected on eccentric wheel part through corresponding bearing, and the bottom plate is fixedly connected on casing through a group of swing support.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, specifically a sander with a dust collection box integrated into the body. Background Technology

[0002] Currently, sanders are widely used for sanding walls or floors. When a sander is working, the motor drives the base plate to sand the surface to be sanded, making it smooth and flat. A typical sander mainly consists of a housing, motor, transmission device, and base plate. The motor drives the base plate to rotate or swing through the transmission device. During use, a large amount of dust is generated when the sandpaper comes into contact with the workpiece surface. This dust is usually discharged through the side of the machine body into a corresponding integrated bag for collection. For example, Chinese patent document CN101511534B discloses a handheld machine tool for performing grinding operations, particularly an ultra-precision grinding machine, which describes a housing 11 with a housing head shaped as a spherical handle 12 for gripping and operating the ultra-precision grinding machine. A dust collection container 13, which can be removed by hand, is mounted on the housing 11. Here, the dust collection container 13 is pushed to a dust discharge pipe 14 (…). Figure 2 On the surface of the workpiece, grinding dust is sucked up by a suction fan and transported to the dust collection container 13 through a dust discharge pipe. This structure is relatively large and can sometimes affect operation. Chinese patent document CN206534587U discloses a dust collection box and a power tool, which describes a dust collection box mounted on the machine body. The dust collection box includes a box body, which includes a first support box and a second support box that are interconnected. One end of the first support box and the second support box are connected, and the other end of the first support box and the second support box extends in the same direction and is arranged circumferentially on the outer periphery of the machine body. The box body has a dust collection port and an air outlet that are connected to the first support box and the second support box. This structure is beneficial for reducing the size of the power tool. However, this structure is arranged around the machine body, which is inconvenient to install and not conducive to heat dissipation of the machine body. Utility Model Content

[0003] The purpose of this invention is to provide a sander with a simple and compact structure and an easy-to-disassemble and install dust collection box.

[0004] The basic technical solution for achieving the purpose of this utility model is as follows: A sander includes a housing assembly, a motor, a base plate, a dust-collecting fan, a dust collection box, and a battery pack. The housing assembly includes a left housing and a right housing, which are fixedly connected to form a housing with a cavity. A circuit board is installed in the housing. The housing assembly also includes an air duct box. The lower front part of the right housing has a dust outlet facing upwards. The air duct box is fixedly installed in the lower part of the housing, and the front part of the air duct box has an upward-opening air outlet that extends upwards from the dust outlet of the right housing outside the housing. The lower right side of the dust collection box has a dust collection port that matches the air outlet of the air duct box. The dust collection box is inserted and fixedly installed on the front part of the housing from top to bottom, with the air outlet of the air duct box extending into the dust collection port. The motor is fixedly installed in the housing, with its motor shaft extending downwards. The dust-collecting fan is fixedly installed on the lower end of the motor shaft, located in the air duct box. The dust collector fan blades are equipped with an eccentric wheel section on the lower side. The base plate is connected to the eccentric wheel section through corresponding bearings. The base plate is fixedly connected to the housing through a set of swing brackets.

[0005] To facilitate heat dissipation, a left ventilation opening is located on the upper left side of the left casing. A right ventilation opening is located on the upper right side of the right casing.

[0006] To facilitate the installation of the dust collection box, the lower part of the casing extends forward to form a support section. The front of the support section has a positioning groove with its opening facing upwards. The upper part of the casing has a connector slot.

[0007] The dustbin includes a front shell and a rear cover. The rear cover is fixedly mounted on the rear side of the front shell, forming a dustbin structure with a cavity. An upper air vent is located at the top of the dustbin. A removable filter is located between the dust collection port and the upper air vent. A positioning post that mates with a positioning groove is located on the lower front side of the dustbin, and a snap-fit ​​part that mates with an insertion groove is located on the upper rear side of the dustbin. The dustbin is inserted and fixedly mounted on the front of the casing from top to bottom.

[0008] To collect dust, the lower side of the air duct box has an air inlet running through it from top to bottom. The bottom plate has a dust suction hole running through it from top to bottom.

[0009] To enhance support strength, the swing bracket is a single unit, comprising a connecting column, an upper fixing part, and a lower fixing part. The upper fixing part of the swing bracket is fixedly mounted on the machine housing, and the lower fixing part is fixedly connected to the base plate. The upper fixing part is connected to the lower end of the connecting column via two symmetrical connecting columns, and the lower fixing part is connected to the upper end of the connecting column via two symmetrical connecting columns.

[0010] The present invention has the following beneficial effects: (1) The sander of the present invention has a simple structure, and the dust collection box is detachably and fixedly installed on the machine shell, which is compact. The front shell is made of transparent material, which makes it easy to observe the dust collection status inside and clean it in time. (2) The sander of the present invention has a left ventilation port on the left shell and a right ventilation port on the right shell, which facilitates the heat dissipation of the motor. (3) The swing bracket of the sander of the present invention has good support in the vertical direction, and in the horizontal direction, the upper fixed part and the lower fixed part can move relative to each other, thereby realizing the swing of the base plate. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the sander of this utility model.

[0012] Figure 2 for Figure 1 A diagram showing the view from the right.

[0013] Figure 3 for Figure 1 A top-down view.

[0014] Figure 4 From Figure 1 A diagram showing the view from the upper right front.

[0015] Figure 5 From Figure 1 A diagram showing the view from the lower left rear.

[0016] Figure 6 From Figure 1 A diagram showing the dustbin when viewed from the upper left front.

[0017] Figure 7 From Figure 1 This is a diagram of the dustbin when viewed from the lower right rear.

[0018] Figure 8 From Figure 1 A diagram showing the dustbin when viewed from the lower left rear.

[0019] Figure 9 From Figure 1 The diagram shows the dustbin with the back cover removed when viewed from the lower right rear.

[0020] Figure 10 From Figure 1 The diagram shows the dustbin with the back cover removed when viewed from the upper left rear.

[0021] Figure 11 From Figure 1 This is a diagram showing the vacuum cleaner box removed when viewed from the upper right front.

[0022] Figure 12 From Figure 1This is a diagram showing the vacuum box and right casing removed when viewed from the upper right rear.

[0023] Figure 13 From Figure 1 This is a diagram showing the vacuum box and right casing removed when viewed from the lower left front.

[0024] Figure 14 This is a schematic diagram of the swinging support when viewed from above.

[0025] Figure 15 This is a schematic diagram of the swinging support when viewed from below.

[0026] Figure 16 This is a schematic diagram of the air duct box.

[0027] The labels in the attached diagram are:

[0028] Casing assembly 1, support 11, positioning groove 11-1, insertion groove 12, battery pack slot 13, left housing 1-1, left vent 1-11, right housing 1-2, dust outlet 1-21, right vent 1-22, air duct box 1-3, air outlet 1-31, air inlet 1-32, switch 1-4.

[0029] Motor 2,

[0030] Base plate 3, dust extraction hole 3-1

[0031] Dust collector fan blade 4, eccentric wheel part 4-1,

[0032] Dust collection box 5, front shell 51, rear cover 52, dust collection port 5-1, upper air outlet 5-2, filter 5-3, positioning post 5-4, snap-fit ​​part 5-5, push button 5-6.

[0033] Circuit board 6,

[0034] The swing bracket 7 consists of a connecting column 7-1, an upper fixing part 7-2, and a lower fixing part 7-3. Detailed Implementation

[0035] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. The description of the orientation of this utility model is as follows: Figure 1 Proceeding in the indicated direction, that is Figure 1 The up, down, left, and right directions shown are the same as the directions described. Figure 1 The direction one faces is the front, and the direction one turns away from is the back. Figure 1 The side to the left is the rear. The terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model or simplifying the description, rather than indicating a specific orientation that must be present.

[0036] (Example 1)

[0037] See Figures 1 to 16 The sander of this utility model includes a housing assembly 1, a motor 2, a base plate 3, a dust collector fan 4, a dust collection box 5, and a battery pack. The housing assembly 1 includes a left housing 1-1, a right housing 1-2, and an air duct box 1-3. The left housing 1-1 and the right housing 1-2 are fixedly connected to form a housing with a cavity. A circuit board 6 is installed in the upper part of the housing, and a support part 11 extends forward from the lower part of the housing. A positioning groove 11-1 is provided at the front of the support part 11, with the opening of the positioning groove 11-1 facing upward. A insertion groove 12 is provided in the upper part of the housing. A dust outlet 1-21 facing forward and upward is provided at the lower front part of the right housing 1-2. A left ventilation opening 1-11 is provided on the upper left side of the left housing 1-1. A right ventilation opening 1-22 is provided on the upper right side of the right housing 1-2. A switch 1-4 is provided on the upper right side of the housing. A battery pack slot 13 is provided on the rear side of the housing. The battery pack is plugged into and fixed in the battery pack slot 13, and is electrically connected to the circuit board via corresponding electrical connection components (using existing technology). Switch 1-4 is electrically connected to the circuit board via corresponding wiring. The air duct box 1-3 is fixedly installed in the lower part of the casing. The front of the air duct box 1-3 has an upward-opening air outlet 1-31, which extends upwards from the dust outlet 1-21 of the right casing 1-2 outside the casing. The lower side of the air duct box 1-3 has a through-hole 1-32.

[0038] Motor 2 is fixedly mounted in housing 1, with its motor shaft extending downwards. Dust collector fan 4 is fixedly mounted on the lower end of the motor shaft of motor 2, located in air duct box 1-3. An eccentric wheel portion 4-1 is provided on the lower side of the dust collector fan 4. Base plate 3 is connected to the eccentric wheel portion 4-1 via corresponding bearings. Base plate 3 is fixedly connected to the housing via a set of swing brackets 7. In this embodiment, there are three swing brackets 7, arranged in an isosceles triangle. Dust suction holes 3-1 penetrate the base plate 3 from top to bottom. The swing bracket 7 is a single piece, made of rubber in this embodiment, and includes a connecting column portion 7-1, an upper fixing portion 7-2, and a lower fixing portion 7-3. The upper fixing portion 7-2 of the swing bracket 7 is fixedly mounted on the housing, and the lower fixing portion 7-3 of the swing bracket 7 is fixedly connected to the base plate 3. The upper fixing part 7-2 is connected to the lower end of the connecting column part 7-1 by two symmetrical connecting columns, and the lower fixing part 7-3 is connected to the upper end of the connecting column part 7-1 by two symmetrical connecting columns. Thus, the swing bracket 7 has good support in the vertical direction, and in the horizontal direction, the upper fixing part 7-2 and the lower fixing part 7-3 can move relative to each other, thereby realizing the swing of the base plate 3.

[0039] The dust collection box 5 includes a front shell 51 and a rear cover 52. The front shell 51 is made of transparent material, and the rear cover 52 is fixedly mounted on the rear side of the front shell 51 to form a dust collection box 5 structure with a cavity. The lower right side of the front shell 51 of the dust collection box 5 has a dust collection port 5-1 that cooperates with the air outlet 1-31 of the air duct box 1-3. The upper part of the front shell 51 of the dust collection box 5 has an upper air outlet 5-2. The dust collection box 5 is inserted and fixedly mounted on the front part of the housing from top to bottom, and the air outlet 1-31 of the air duct box 1-3 extends into the dust collection port 5-1. A removable filter screen 5-3 is provided between the dust collection port 5-1 and the upper air outlet 5-2 of the dust collection box 5. The lower front side of the front shell 51 of the dust collection box 5 has a positioning post 5-4 that cooperates with the positioning groove 11-1, and the upper rear side of the rear cover 52 of the dust collection box 5 has a snap-fit ​​part 5-5 that cooperates with the insertion groove 12. The upper rear side of the dust collection box 5 is provided with a push button 5-6. The push button 5-6 adopts existing technology. The push button 5-6 is slidably set on the front shell 51 and extends out of the rear cover 52. The dust collection box 5 is locked and fixed on the housing by the push button 5-6. Pushing the push button 5-6 forward unlocks it. After unlocking, the dust collection box 5 can be taken out upward.

[0040] When the sander of this utility model is working: the dust removal fan blade 4 sucks the dust generated by the base plate 3 during operation into the air duct box 1-3 through the dust suction hole 3-1, and then discharges it into the dust collection box 5 from the air outlet 1-31. The dust is blocked in the dust collection box 5 by the filter screen 5-3.

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sander, comprising a housing assembly (1), a motor (2), a base plate (3), a dust collector fan (4), a dust collection box (5), and a battery pack; the housing assembly (1) comprises a left housing (1-1) and a right housing (1-2), the left housing (1-1) and the right housing (1-2) being fixedly connected to form a housing with a cavity, and a circuit board (6) being installed in the housing, characterized in that: The housing assembly (1) also includes an air duct box (1-3); the lower front part of the right housing (1-2) is provided with a dust outlet (1-21) facing forward and upward; the air duct box (1-3) is fixedly installed in the lower part of the housing, and the front part of the air duct box (1-3) is provided with an upward-opening air outlet (1-31), which extends upward from the dust outlet (1-21) of the right housing (1-2) outside the housing; the lower right side of the dust collection box (5) is provided with a dust collection port (5-1) that cooperates with the air outlet (1-31) of the air duct box (1-3); the dust collection box ( 5) The air outlet (1-31) of the air duct box (1-3) is inserted and fixedly installed on the front of the housing from top to bottom. The air outlet (1-31) of the air duct box (1-3) extends into the dust collection port (5-1); the motor (2) is fixedly installed in the housing, and its motor shaft extends downward. The dust removal fan (4) is fixedly installed on the lower end of the motor shaft of the motor (2) and located in the air duct box (1-3); the lower side of the dust removal fan (4) is provided with an eccentric wheel (4-1), and the base plate (3) is connected to the eccentric wheel (4-1) through the corresponding bearing. The base plate (3) is fixedly connected to the housing through a set of swing brackets (7).

2. The sander according to claim 1, characterized in that: The left shell (1-1) has a left ventilation opening (1-11) on the upper left side; the right shell (1-2) has a right ventilation opening (1-22) on the upper right side.

3. The sander according to claim 1, characterized in that: The lower part of the housing extends forward to form a support part (11), and the front part of the support part (11) is provided with a positioning groove (11-1), with the opening of the positioning groove (11-1) facing upward; the upper part of the housing is provided with a plug-in groove (12). The dust collection box (5) includes a front shell (51) and a rear cover (52); the rear cover (52) is fixedly installed on the rear side of the front shell (51) to form a dust collection box (5) structure with a cavity; the upper part of the dust collection box (5) is provided with an upper air outlet (5-2); a removable filter screen (5-3) is provided between the dust collection port (5-1) of the dust collection box (5) and the upper air outlet (5-2); the lower front side of the dust collection box (5) is provided with a positioning post (5-4) that cooperates with the positioning groove (11-1), and the upper rear side of the dust collection box (5) is provided with a snap-fit ​​part (5-5) that cooperates with the insertion groove (12); the dust collection box (5) is inserted and fixedly installed on the front part of the housing from top to bottom.

4. The sander according to claim 1, characterized in that: The air duct box (1-3) has an air inlet (1-32) running through it from top to bottom on the lower side; the bottom plate (3) has a dust suction hole (3-1) running through it from top to bottom.

5. The sander according to claim 1, characterized in that: The swing bracket (7) is a single piece, including a connecting column (7-1), an upper fixing part (7-2) and a lower fixing part (7-3); the upper fixing part (7-2) of the swing bracket (7) is fixedly mounted on the housing, and the lower fixing part (7-3) of the swing bracket (7) is fixedly connected to the base plate (3); the upper fixing part (7-2) is connected to the lower end of the connecting column (7-1) by two symmetrical connecting columns, and the lower fixing part (7-3) is connected to the upper end of the connecting column (7-1) by two symmetrical connecting columns.

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