Upper machine head assembly of sanding machine

Abstract

The utility model discloses an upper machine head assembly of a sanding machine. The upper machine head assembly is characterized by comprising a machine shell assembly, a motor and a battery connecting assembly. The machine shell assembly comprises a front shell body and a rear shell body. The front shell and the rear shell are fixedly connected to form an upper machine shell with a cavity, and a circuit board is installed in the right portion of the upper machine shell. A switch is arranged at the upper part of the left side of the upper shell; the battery connecting assembly is fixedly arranged on the right portion of the upper machine shell and used for being electrically connected with the battery pack in the battery pack slot. And the battery pack is electrically connected with the circuit board through the battery connecting assembly and a corresponding circuit. The motor is fixedly arranged in the upper machine shell, and a motor shaft extends downwards. A first installation groove is formed in the left portion of the lower side of the upper machine shell, and a second installation groove is formed in the right portion of the lower side of the upper machine shell.

Description

Technical Field

[0001] The utility model relates to the technical field of power tools, in particular to an upper head assembly of a sander. Background Art

[0002] Sanders in power tools are widely used for sanding and polishing walls or floors. When the sander works, the motor drives the bottom plate to polish the surface to be polished, so as to make it smooth and flat, and can be used for sanding operations on the surfaces of wood products, metal products, plastic products, walls, etc. In order to generate oscillation, the bottom plate is usually mounted on an eccentric wheel. The bottom of the head is provided with a bottom plate, and sandpaper is provided under the bottom plate, and the sandpaper contacts the workpiece for polishing. Sanders have different shapes such as circular bottom plates and triangular bottom plates according to different usage occasions.

[0003] Chinese patent document CN215659543U discloses a sander, and the bottom plate of this sander is circular. Chinese patent CN217224976U discloses a handheld sander, and the chassis (i.e., the bottom plate) of this sander is triangular. Due to the different shapes of the bottom plates, the shapes of their protective covers are also different, and the cover is usually integrated with the housing, so they do not have universality with each other. The circular and triangular ones can only be produced separately, which is not convenient for manufacturers to produce and stockpile. Content of the Utility Model

[0004] The purpose of the utility model is to provide an upper head assembly of a sander with a simple structure, which can be used for sanders with circular bottom plates or triangular bottom plates.

[0005] The basic technical solution to achieve the purpose of the utility model is: an upper head assembly of a sander, and its structural feature is: it includes a housing assembly, a motor and a battery connection assembly. The housing assembly includes a front housing and a rear housing. The front housing and the rear housing are fixedly connected to form an upper housing with a cavity, and a circuit board is installed in the right part of the upper housing.

[0006] A switch is provided at the upper left part of the upper housing, and a battery pack slot is provided at the right side of the upper housing. The battery connection assembly is fixedly arranged on the right part of the upper housing for electrically connecting with the battery pack in the battery pack slot. The battery pack is electrically connected to the circuit board through the battery connection assembly and corresponding circuits.

[0007] The motor is fixedly arranged in the upper housing, and its motor shaft extends downward. A first installation groove is provided at the lower left part of the lower side of the upper housing, and a second installation groove is provided at the lower right part of the lower side of the upper housing.

[0008] Further, in order to facilitate the fixation of the vibration frame: the cross-section of the first installation groove is T-shaped.

[0009] Further, in order to facilitate the fixation of the vibration frame: the cross-section of the second installation groove is T-shaped.

[0010] Further, to facilitate the fixation of the corresponding housing: A clamping groove is provided on the lower side of the upper housing around the left side and the front and rear sides of the upper housing.

[0011] Further, to meet different grinding requirements: A speed control switch is provided on the upper right side of the front housing, and the speed control switch is electrically connected to the circuit board through corresponding wires.

[0012] The utility model has the following beneficial effects: (1) The structure of the upper head assembly of the sander of the utility model is simple, which is convenient for the manufacturer to produce and stock up during the off-season of sales. When the peak sales season comes, as long as the corresponding circular or triangular bottom plates are produced according to needs and then assembled with the upper head assembly, the production efficiency and supply capacity are greatly improved. Brief Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the sander when the upper head assembly of the sander of the utility model uses a circular bottom plate.

[0014] Figure 2 It is Figure 1 a bottom view schematic diagram.

[0015] Figure 3 It is a schematic diagram when observed from the Figure 1 upper left front.

[0016] Figure 4 It is a schematic diagram when observed from the Figure 1 lower left front.

[0017] Figure 5 It is a schematic structural diagram of the sander when the upper head assembly of the sander of the utility model uses a triangular bottom plate.

[0018] Figure 6 It is Figure 5 a bottom view schematic diagram.

[0019] Figure 7 It is a schematic diagram when observed from the Figure 5 upper left front.

[0020] Figure 8 It is a schematic diagram when observed from the Figure 5 lower left front.

[0021] Figure 9 It is a schematic diagram when observed from the Figure 1 lower left front of the upper head assembly.

[0022] Figure 10 It is a schematic diagram when observed from the Figure 1 lower right rear of the upper head assembly.

[0023] Figure 11 It is a schematic diagram when observed fromFigure 1 Schematic diagram after removing the corresponding lower housing and circular bottom plate when observing from the lower left front.

[0024] Figure 12 For observing from Figure 1 Internal structure schematic diagram after removing the front shell when observing from the upper left front.

[0025] Figure 13 For observing from Figure 5 Schematic diagram after removing the corresponding lower housing and triangular bottom plate when observing from the lower left front.

[0026] Figure 14 For observing from Figure 5 Internal structure schematic diagram after removing the front shell when observing from the upper left front.

[0027] Figure 15 Schematic diagram of the triangular bottom plate.

[0028] The reference numerals in the drawings are:

[0029] Housing assembly 1, front housing 1-1, rear housing 1-2, battery pack slot 11, snap-in groove 12, first mounting groove 13, second mounting groove 14,

[0030] Motor 2,

[0031] Battery connection assembly 3,

[0032] Circuit board 4,

[0033] Switch 5,

[0034] Speed control switch 6,

[0035] Circular housing 81, first dust outlet 81-1, first fan blade 82, circular bottom plate 83,

[0036] Triangular housing 91, second dust outlet 91-1, second fan blade 92, triangular bottom plate 93, vibration frame 94. Detailed implementation manners

[0037] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to specific embodiments and in conjunction with the drawings. The description of the orientation of the present utility model is carried out according to the Figure 1 shown orientation, that is, Figure 1 the up, down, left, and right directions shown are the up, down, left, and right directions described, Figure 1 the direction facing is the front, away from Figure 1The side facing away is the rear. It should be understood that the terms "upper", "lower", "inner", "outer", etc. indicating orientation or positional relationships are based on the positional relationships shown in the drawings, and are only for the convenience of describing the present utility model or simplifying the description, rather than indicating a specific orientation that must be possessed.

[0038] (Embodiment 1 )

[0039] See Figures 1 to 15 , the upper head assembly of the sander of the present utility model includes a housing assembly 1, a motor 2, and a battery connection assembly 3. The housing assembly 1 includes a front housing 1-1 and a rear housing 1-2. The front housing 1-1 and the rear housing 1-2 are fixedly connected to form an upper housing with a cavity, and a circuit board 4 is installed in the right part of the upper housing.

[0040] A switch 5 is provided at the upper left side of the upper housing, and a speed control switch 6 is provided at the upper right side of the front housing 1-1. The speed control switch 6 is a rotary wave switch. A battery pack slot 11 is provided at the right side of the upper housing. The battery connection assembly 3 is fixedly arranged on the right part of the upper housing. The battery connection assembly 3 is a prior art, and its corresponding part is located in the battery pack slot 11 for electrically connecting with the battery pack in the battery pack slot 11.

[0041] The switch 5 is electrically connected to the circuit board 4 through corresponding wires, and the speed control switch 6 is electrically connected to the circuit board 4 through corresponding wires. The battery pack is electrically connected to the circuit board 4 through the battery connection assembly 3 and corresponding wires.

[0042] The motor 2 is fixedly arranged in the upper housing, and its motor shaft extends downward.

[0043] A clamping groove 12 is provided around the left side, front side, and rear side of the lower side of the upper housing.

[0044] A first installation groove 13 is provided at the left part of the lower side of the upper housing, and the cross-section of the first installation groove 13 is T-shaped.

[0045] A second installation groove 14 is provided at the right part of the lower side of the upper housing, and the cross-section of the second installation groove 14 is T-shaped.

[0046] When assembling a sander with a circular bottom plate: Fix the corresponding circular cover 81 to the lower part of the upper housing, and the corresponding part is fixedly connected with the clamping groove 12 of the upper housing in a clamping and matching manner. A first dust outlet 81-1 is provided at the rear side of the circular cover 81. A first wind blade 82 is fixedly arranged on the motor shaft of the motor 2. The first wind blade 82 is a prior art, and an eccentric wheel installation part is provided at the lower side of the first wind blade 82. The circular bottom plate 83 is rotatably arranged on the eccentric wheel installation part at the lower side of the first wind blade 82.

[0047] When assembling the sander with a triangular base plate: Fix the corresponding triangular cover 91 to the lower part of the upper housing, and the corresponding part is fixedly connected with the clamping groove 12 of the upper housing by clamping fit. A second dust outlet 91-1 is provided at the rear side of the triangular cover 91. The second fan blade 92 is fixedly arranged on the motor shaft of the motor 2. The second fan blade 92 is a prior art. An eccentric wheel mounting part is provided below the second fan blade 82. The triangular base plate 93 is rotatably arranged on the eccentric wheel mounting part below the second fan blade 92. The triangular base plate 93 is connected to the upper housing through a vibration frame 94, and the corresponding part of the vibration frame 94 is arranged in the first mounting groove 13 and the second mounting groove 14 of the upper housing.

[0048] In the specific embodiments described above, the purpose, technical solutions and beneficial effects of the present invention have been further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The upper head assembly of a sander, characterized in that: It includes a housing assembly (1), a motor (2), and a battery connection assembly (3); the housing assembly (1) includes a front housing (1-1) and a rear housing (1-2); the front housing (1-1) and the rear housing (1-2) are fixedly connected to form an upper housing with a cavity, and a circuit board (4) is installed in the right part of the upper housing; A switch (5) is provided at the upper left side of the upper housing, and a battery pack slot (11) is provided at the right side of the upper housing; the battery connection assembly (3) is fixedly arranged on the right part of the upper housing for electrically connecting with the battery pack in the battery pack slot (11); the battery pack is electrically connected to the circuit board (4) through the battery connection assembly (3) and corresponding circuits; The motor (2) is fixedly arranged in the upper housing, and its motor shaft extends downward; a first installation groove (13) is provided at the lower left part of the lower side of the upper housing, and a second installation groove (14) is provided at the lower right part of the lower side of the upper housing.

2. The upper head assembly of the sander according to claim 1, characterized in that: The cross-section of the first installation groove (13) is T-shaped.

3. The upper head assembly of the sander according to claim 1, wherein: The cross-section of the second installation groove (14) is T-shaped.

4. The upper head assembly of the sander according to claim 1, characterized in that: A clamping groove (12) is provided around the lower side of the upper housing on the left side and the front and rear sides of the upper housing.

5. The upper head assembly of the sander according to claim 1, characterized in that: A speed regulation switch (6) is provided at the upper right side of the upper part of the front housing (1-1), and the speed regulation switch (6) is electrically connected to the circuit board (4) through corresponding circuits.

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