WO2017221109A1

WO2017221109A1 - Switch device

Info

Publication number: WO2017221109A1
Application number: PCT/IB2017/053485
Authority: WO
Inventors: 田永超; 徐珊; 郭耀
Original assignee: Bsh家用电器有限公司
Priority date: 2016-06-16
Filing date: 2017-06-13
Publication date: 2017-12-28
Also published as: CN107516611A

Abstract

Disclosed is a switch device having a housing, a sliding button arranged thereupon, a printed circuit board arranged within the housing and cooperating with the sliding button to implement positional switching, an electrically-conductive member arranged upon the sliding button, and a first contact and a second contact arranged upon said electrically-conductive member. Arranged upon the printed circuit board are a circuit module and a first contact area and a second contact area electrically connected thereto. At least two operative positions are provided upon the path of the sliding button; when the sliding button is at the first position, the first contact and the second contact are both in contact with the first contact area and establish thereby an electrical connection; when the sliding button is at the second position, the first contact and the second contact are both in contact with the second contact area and establish thereby an electrical connection; when the sliding button is in the process of sliding from the first position to the second position, at least one of the first contact and the second contact remains in contact with the first contact area or with the second contact area, thus ensuring that the electrically-conductive member remains in an electrically-conductive state with the circuit board without interruption.

Description

Switching device

[Technical Field]

The present invention relates to the field of switches, and in particular to a switching device.

【Background technique】

In the prior art motor control, the most commonly used gear position adjustment function is to install a slide switch on the circuit board of the motor, and provide different signals through the gear position adjustment of the slide switch to realize the adjustment of the motor power. However, in the process of adjusting the gear position, there is a blank area between each gear position, so there will be an open circuit when switching, which will result in the motor not working continuously. In view of the problem that the switching device for controlling the operation of the motor in the prior art is broken when the gear position is switched, thereby affecting the continuity of the motor work, an effective solution has not been proposed yet.

[Summary of the Invention]

The invention provides a switch device for solving at least the problem that the switch device for controlling the operation of the motor in the prior art can be disconnected when the gear position is switched, thereby affecting the continuity of the work of the motor. In order to achieve the object, in one aspect of the invention, a switch device is provided which can be used on other household appliances such as a vacuum cleaner. The switch device has a housing, a sliding button mounted on the housing, a circuit board disposed in the housing and engaged with the sliding button to complete gear shifting, and the sliding button is provided with a conductive sheet. a first contact and a second contact are disposed on the conductive sheet; a circuit module is disposed on the circuit board, and the circuit module is a first contact area and a second contact area electrically connected to the block; at least two gear positions are disposed on the path of the slider; wherein, when the slider is in the first gear position, the first contact And the second contact is in contact with the first contact area to establish an electrical connection; when the slider is in the second gear position, the first contact and the second contact are both The second contact area contacts to establish an electrical connection; in the process of sliding the slider from the first gear position to the second gear position, the first contact and the second contact are at least One of them is in contact with the first contact region or the second contact region to ensure that the conductive sheet and the circuit board are always in an electrically connected state. Through this design, the gear position adjustment function is realized at a low cost, and there is no disconnection when switching between each gear, which ensures the continuity of the motor work.

Preferably, in the process of sliding the slider from the first gear position to the second gear position, the switch device is in an operating state of the first gear position. During the sliding process of the slider, the working state of the switch device can be the first gear position, and the working state can also be set to ensure the continuous operation of the motor.

Preferably, an isolation strip is disposed between the first contact area and the second contact area; wherein, when the first contact passes through the isolation strip, the second contact is in the first contact The first contact is in the second contact area when the second contact passes through the isolation strip. The design allows at least one of the first contact and the second contact to contact the first contact region or the second contact region on the circuit board to ensure that the circuit board remains electrically connected at all times without an open circuit.

Preferably, the first contact and the second contact are arranged side by side perpendicular to a sliding direction of the slider; the isolation strip is provided with a first isolation region and a second isolation region spaced apart from each other; The sheet passes through the first isolation region and the second isolation region, and the first contact and the second contact are respectively in contact with the first isolation region and the second isolation region at different times, The conductive sheet is always electrically connected to the circuit board.

Preferably, the conductive sheet is provided with a third contact; the circuit board is provided with a third contact area, and the third contact always slides on the third contact area. Preferably, the third contact region is juxtaposed with the first contact region and the second contact region. Preferably, the third contact area is a ground or a negative pole of a power source.

Preferably, one end of the slider and one of the housings are provided with protrusions, and the other one of the housings is provided with a recess corresponding to the protrusions; the protrusions and the recesses cooperate to achieve a pair Positioning of the first gear position and the second gear position. The invention solves the problem that the switching device for controlling the working of the motor in the prior art breaks when the gear position is switched, thereby affecting the continuity of the working of the motor, so that the conductive device is always on the circuit board during the gear switching process. The contact area remains electrically connected to ensure continuity of operation of the motor.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,, . In the drawings: Figure 1 is a schematic cross-sectional view of a switching device;

Figure 2 is a schematic diagram of the connection of the switch device (1);

Figure 3 is a schematic diagram of the connection of the switching device (2).

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. Embodiments of the present invention provide a switching device that can be used on other household appliances such as a vacuum cleaner. 1 is a schematic cross-sectional view of a switching device, FIG. 2 is a schematic view of the connection of the switching device (1), and FIG. 3 is a schematic view of the connection of the switching device (2). The switch device 1 has a housing 2, a slider 3 mounted on the housing 2, a circuit board 4 disposed in the housing 2 and configured to cooperate with the slider 3 to complete gear shifting, and the slider 3 is provided with at least two The gear positions (S1, S2) correspond to the two gear positions (Pl, P2) on the circuit board 4, and have different working states, such as low and high.

The slider 3 is provided with a conductive sheet 5 (usually an elastic conductive copper sheet), the conductive sheet 5 is provided with a first contact 7 and a second contact 8; and the circuit board 4 is provided with a circuit module 6 (in the drawing) Not shown), and the first contact region 10 and the second contact region 11 electrically connected to the circuit module 6, the circuit module 6 determines and controls the operating state of the motor according to the contact position of the contact and the contact region.

As described above, the two knob positions (P1, P2) are provided on the path of the slider 3, and when the slider 3 is in the first gear position P1, the first contact 7 and the second contact 8 are both first and first. The contact area 10 is in contact with each other to establish an electrical connection; when the slider 3 is in the second gear position P2, the first contact 7 and the second contact 8 are both in contact with the second contact area 11 to establish an electrical connection; the slider 3 In the process of sliding from the first gear position P1 to the second gear position P2, at least one of the first contact 7 and the second contact 8 is in contact with the first contact zone 10 or the second contact zone 11 to Make sure that the conductive sheet 5 and the circuit board 4 are always in electrical connection. Through this scheme, it is ensured that the circuit of the switch device is in an uninterrupted state during the gear shifting process, which ensures the continuity of the motor operation.

Specifically, for example, because the isolation strip 13 is disposed between the first contact area 10 and the second contact area 11, a blank area is switched as a gear position; wherein, when the first contact 7 passes through the isolation belt 13, the second touch Point 8 is in first contact zone 10; when second contact 8 passes through spacer strip 13, first contact 7 is in second contact zone 11. The separation belt 13 is a blank area for gear shifting.

The design causes at least one of the first contact 7 and the second contact 8 to contact the first contact region 10 or the second contact region 11 on the circuit board 4, even if one contact enters a blank area for gear shifting And another contact can ensure contact with one of the above contact areas to ensure that the board is always protected With an electrical connection, there will be no open circuit. Through this design, the gear position adjustment function is realized at a low cost, and there is no disconnection when switching between each gear, which ensures the continuity of the motor work.

Specifically, the first contact 7 and the second contact 8 in the above solution are arranged side by side perpendicular to the sliding direction of the slider 3; the isolation strip 13 is provided with a first isolation region 13a and a second isolation region 13b spaced apart from each other; The sheet 5 passes through the first isolation region 13a and the second isolation region 13b, and the first contact 7 and the second contact 8 are respectively in contact with the first isolation region 13a and the second isolation region 13b at different times to make the conductive sheet. 5 is always electrically connected to the circuit board 4.

Preferably, during the sliding of the slider 3 from the first gear position P1 to the second gear position P2, the switching device 1 is in the operating state of the first gear position S1. It is easy to think that during the sliding process, the working state of the switch device 1 can be the first gear position, or the working state can be set by itself to ensure the continuous operation of the motor.

In a preferred embodiment, the conductive strip 5 is provided with a third contact 9; the circuit board 4 is provided with a third contact region 12, and the third contact 9 always slides over the third contact region 12. The third contact area 12 is elongated, and its length direction is arranged along the sliding direction of the slider 3, and during the sliding process of the slider 3, the third contact area 12 is always in contact with the third contact 9 on the conductive sheet 5. The third contact zone can be set to ground or the negative pole of the power supply.

Preferably, in order to cooperate with the sliding of the slider and the switching of the gear position, the third contact zone 12 is juxtaposed with the first contact zone 10 and the second contact zone 11.

Preferably, as shown in FIG. 1, FIG. 2 and FIG. 3, the tail portion 31 of the slider 3 is provided with a protrusion 32, which may be arranged in a triangle or a circle, and the housing 2 is provided with a protrusion 32. The recess 20, the protrusion 32 and the recess 20 cooperate to realize the positioning of the above gear position, specifically the positioning of the first gear position P1 and the second gear position P2.

In this embodiment, the three positions of the slider 3 are provided with P1, P2 and P3, respectively. Corresponding to three working states, such as low, medium and high.

Correspondingly, the housing is provided with three gear recesses (20a, 20b, 20c), which are respectively a first gear position S1, a second gear position S2 and a third gear position S3, respectively corresponding to the above three gear positions P1, P2 and P3.

It is easily conceivable by those skilled in the art that, with reference to the above solution, by adding a plurality of gear positions and corresponding contact areas, it is possible to effectively realize a plurality of different positions such as a low speed position, a medium speed position, a high speed position, etc. by sliding the slider. Uninterrupted switching between gears. The invention solves the problem that the switching device for controlling the working of the motor in the prior art breaks when the gear position is switched, thereby affecting the continuity of the working of the motor, so that the conductive device is always on the circuit board during the gear switching process. The contact area remains electrically connected to ensure continuity of operation of the motor. The various embodiments described above and shown in the drawings are merely illustrative of the invention and are not all of the invention. It is within the scope of the present invention to make any changes to the present invention made by those skilled in the art within the scope of the basic technical idea of the present invention.

Claims

Claim

A switch device (1) having a housing (2), a slider (3) mounted on the housing (2), being disposed in the housing (2) and with the slider (3) A circuit board (4) that cooperates with the completion of gear shifting, and is characterized by:

The slider (3) is provided with a conductive sheet (5), and the conductive sheet (5) is provided with a first contact (7) and a second contact

(8);

The circuit board (4) is provided with a circuit module (6), and a first contact area (10) and a second contact area (11) electrically connected to the circuit module (6);

At least two gear positions (P1, P2) are provided on the path of the slider (3);

When the slider (3) is in the first gear position P1, the first contact (7) and the second contact (8) are both in contact with the first contact zone (10) to establish Electrical connection

When the slider (3) is in the second gear position P2, the first contact (7) and the second contact (8) are both in contact with the second contact area (11) to establish Electrical connection

The first contact (7) and the second contact (8) are at least in the process of sliding the slider (3) from the first gear position P1 to the second gear position P2. One of the first contact regions (10) or the second contact regions (11) is in contact with each other to ensure that the conductive sheets (5) and the circuit board (4) are always in an electrically connected state.

2. The switching device of claim 1 wherein:

During the sliding of the slider (3) from the first gear position P1 to the second gear position P2, the switch device (1) is in an operating state of the first gear position.

3. The switching device of claim 1 wherein:

An isolation strip (13) is disposed between the first contact region (10) and the second contact region (11); wherein, when the first contact (7) passes through the isolation strip (13), The second contact (8) is in the first contact area;

When the second contact (8) passes through the isolation strip (13), the first contact (7) is in the second contact area.

4. The switching device of claim 3, wherein:

The first contact (7) and the second contact (8) are juxtaposed perpendicularly to the sliding direction of the slider (3);

The isolation strip (13) is provided with a first isolation region (13a) and a second isolation region (13b) spaced apart from each other;

The conductive sheet (5) passes through the first isolation region (13a) and the second isolation region (13b), respectively, the first contact (7) and the second contact (8) are respectively The first isolation region (13a) and the second isolation region (13b) are contacted at different times to keep the conductive sheet (5) and the circuit board (4) electrically connected at all times.

5. The switching device of claim 4, wherein:

The conductive sheet (5) is provided with a third contact (9);

The circuit board (5) is provided with a third contact area (12), and the third contact (9) always slides on the third contact area (12).

6. The switching device of claim 5, wherein:

The third contact region (12) is juxtaposed with the first contact region (10) and the second contact region (11).

7. The switching device of claim 5, wherein:

The third contact region (12) is a ground or a negative power source.

8. The switching device of claim 1 wherein:

One end (31) of the slider (3) and one of the housings (2) are provided with protrusions (32), and the other one of the sliders (3) is provided with a recess corresponding to the protrusions (32) (20);

The projections (32) and the recesses (20) cooperate to achieve positioning of the first gear position P1 and the second gear position P2.