TW201432766A - Switch structure of electronic device - Google Patents

Abstract

This invention provides a switch structure of electronic device which includes a photoelectric sensor and a rotor, the photoelectric sensor as opposed to the rotor in a fixed location, the rotor have plurality blades set on it, the blades arrangement to divide into groups based on orientation install of the rotor, the blades arranged have a different interval width, the blades have the same area, the blades with the rotor to rotated to pass through the photoelectric sensor.

Description

Switch structure of electronic device

The invention relates to a switch structure of an electronic device, in particular to a switch structure of an electronic device having a photodetector and a rotor blade disposed opposite to each other.

In general, electronic devices often use a turntable switch for functional control, such as a function selection button for a digital camera shooting mode. Such a rotating turntable switch structure is mainly composed of a circuit design of a brush and a printed circuit board, and the different conductive sheets on the brush are in contact with different contact points on the printed circuit board, and after passing through the conduction circuit, The resistors on the circuit are divided to obtain different voltage values, and then different voltage values are converted into analog and digital information for the processor to process the change shooting mode. This type of turntable switch has the following disadvantages. Firstly, the conductive sheet is prone to deformation during the assembly process, which affects the contact conduction performance and causes quality instability. Secondly, the environmental requirements are high during the assembly process, and it is necessary to prevent the dust from falling on the contact points of the printed circuit board, so as to avoid the performance and quality that affect the contact conduction. Secondly, the contact between the brush and the printed circuit board is contacted for a long time, which is prone to powder and affects the conduction performance of the brush and the contact point, resulting in unstable quality. Finally, the arrangement of different contact points on the printed circuit board requires a large amount of space, thereby making the size of the printed circuit board larger, which not only increases the cost of the printed circuit board, but also is disadvantageous for the miniaturization design of the electronic device product. So how to improve to improve the stability quality of operation control, still need to study and improve.

In view of this, it is necessary to provide a switch structure of an electronic device which can improve durability and stability.

The invention provides a switch structure of an electronic device, comprising at least one photo-sensing device and a rotating wheel, wherein the photo-electrical sensor is located at a fixed relative position with the rotating wheel, and the rotating wheel has a plurality of blade arrangements, and the blade is based on The wheel has a positioning arrangement grouping on the wheel, the blade arrangement having different spacing widths, the blades having the same area, the blades rotating through the photodetector as the turntable rotates.

Compared with the prior art, the switch structure of the electronic device of the present invention is provided by the photo-inductor and the plurality of blades provided on the rotating wheel, and the blade is provided in the photo-sensing device through the generated sensing information. The control of the operation of the device overcomes the lack of use of the contact structure by means of induction, thereby effectively improving the durability and stability of the rotary switch structure.

10. . . Switch structure

12. . . Photoelectric detector

122. . . Opening

14. . . Runner

142. . . blade

144. . . Positioning slot

a, c, e, g, i, k, m, o. . . Marking blade

b, d, f, h, j, l, n, p. . . Marking interval width

w. . . First width

W. . . Second width

1 is an exploded perspective view of an embodiment of a switch structure of an electronic device of the present invention.

2 is a top plan view of a runner of the switch structure of the electronic device of FIG. 1.

Fig. 3 is a view showing a potential waveform when the turning wheel of the switch structure of the electronic device of Fig. 1 is rotated clockwise.

4 is a waveform diagram of potentials when the turning wheel of the switch structure of the electronic device of FIG. 1 is rotated counterclockwise.

The present invention will be specifically described below with reference to the accompanying drawings.

Please refer to FIG. 1 , which is an exploded perspective view of an embodiment of a switch structure of an electronic device according to the present invention. The switch structure 10 includes at least one photo-electric detector 12 and a reel 14 . The configuration of the photo-detector 12 It is a rectangular body provided with an opening 122 at one end. The operation of the photo-electrical sensor 12 is briefly described as follows; one of the two sides of the opening 122 has a beam projecting device on one side and a beam receiving device on the other side. When the light beam emitted by the projection device is received by the receiving device, the photo-electrical sensor 12 senses a first potential value, and when the light beam emitted by the projection device is blocked from being received by the receiving device, the optical inductor The detector 12 senses a second potential value. An analogy message can be formed by the ratio of the difference between the first potential value and the second potential value and the time change ratio, and the analog message can be processed by the processor after being converted into a digital message. Therefore, the photo-electrical sensor 12 is a proportional controller (PI controller), and the proportional-integral controller belongs to a known inductive controller, which is not in the technical scope of the present invention, and therefore is not described in detail in the drawings or the description. , first specified.

In this embodiment, the photo-sensing device 12 and the reel 14 are in a fixed relative position, that is, the photo-sensing device 12 and the reel 14 are both disposed at a fixed position, and the photo-sensing is maintained. The state of the device 12 opposite the runner 14. The runner 14 has a plurality of blades 142 disposed thereon. The blade 142 is opposite the opening 122 of the photodetector 12, and the blade 142 rotates through the opening 122 as the wheel 14 rotates. The vanes 142 pass through the optical path of the photo-inductor 12 within the opening 122. The ribs 142 are arranged on the rotating wheel 14 according to the positioning arrangement of the rotating wheel 14. The positioning arrangement is to provide a positioning slot 144 having a positioning function on the axle of the rotating wheel 14, and the positioning slot 144 is matched with the rotating The elastic positioning blocks (not shown) provided by the wheel 14 work together. When the positioning block is locked in the positioning groove 144 by elastic action, the position of the rotating wheel 14 to the positioning groove 144 can be stopped. When a large torque is applied to the wheel 14 to overcome the elastic force of the positioning block, the wheel 14 can continue to rotate, and when the positioning block is inserted into the next positioning groove 144, the rotation can be made. The wheel 14 is again stopped, causing the wheel 14 to produce a setting with positioning. In this embodiment, the positioning groove 144 is disposed at an equal angle on the axle of the wheel 14, and four positioning slots 144 are disposed at an equiangular angle of ninety degrees. The blades 142 are divided into four groups according to the four positioning slots 144. Arranged on the runner 14, and each set has two of the blades 142, and a total of eight of the blades 142 are arranged on the runner 14 (as shown in Figure 2). The eight blades 142 are arranged at different intervals. For convenience of description, the blades 142 and the spacing are indicated in alphabetical order a to p in FIG. 2, wherein the English letters indicate the blades a, c, e, g, i, k, m, o, wherein the leaves a and c, e and g, i and k, m and o are each a group. The English alphabet indicates the interval widths b, d, f, h, j, l, n, p, wherein the interval widths b and d, f and h, j and l, n and p are the interval widths of the groups 142. . One of the blades 142 of each group is opposite to the positioning groove 144. For example, the indicator blades a, e, i, and m are respectively opposite to the positioning groove 144. Through the positioning of the positioning groove 144, the rotation of the wheel 14 can be confirmed. A positioning slot 144 passes through a set of the blades 142. The eight arrays of the blades 142 have different spacing widths, such as the English letter indicating that the spacing width b between the blades a and c is different from the spacing width d between the letters c and e. That is, the adjacent widths of the blades 142 arranged in the same group are different, the first group adjacent to the blades 142 has a first width w, and the adjacent groups of the blades 142 have a second width W. The spacing width of the blades 142 arranged in each group is the same. For example, the interval widths of the interval widths b, f, j, and n between the groups of the blades 142 are the same first width w. The interval between the leaves 142 of the adjacent different groups of the English letters indicates that the interval widths of the interval widths d, h, l, and p are the same second width W. The second width W (the interval in which the English letters indicate the interval widths d, h, l, and p) is greater than the first width w (the interval in which the English letters indicate the interval widths b, f, j, and n) is at least three times or more. The vanes 142 have the same area size, and the area of the vanes 142 can block the reception of the light conducting path within the photodetector 12. The blade 142 and the spacing width of the runner 14 of the embodiment pass through the photo-sensing device 12, and the analog information of the output potential difference is sensed when the blade 142 blocks the optical path of the photo-detector 12 A low potential is output during reception, and a high potential is output when the interval width between the blades 142 causes the optical path in the photodetector 12 to be normally received. When the runner 14 rotates clockwise with the blade 142, since a group of the blades 142 in each positioning arrangement has two spacing widths (the first width w and the second width W), and the spacing width Differently, the photo-sensing device 12 will sense two high-potential waveforms of different timings (as shown in FIG. 3), and the high-potential waveform timings are arranged in a large order. The high-potential waveform timing is sequentially indicated by the English alphabet to indicate the interval widths p, n, l, j, h, and f, as compared with the width of the mark interval between the blades 142. Conversely, when the wheel 14 rotates counterclockwise with the blade 142, the potential waveform of the inductive output of the photo-sensing device 12 is as shown in FIG. 4, and the high-potential waveform timing is arranged in a small order, compared with the The width of the mark interval between the blades 142 is sequentially indicated by the English alphabet to indicate the interval widths b, d, f, h, j, and l. By sequentially arranging the difference in the order of the high potential timings in the output potential waveform, the processor can be provided to determine whether the wheel 14 is rotating clockwise or counterclockwise.

In the switch structure of the electronic device of the present invention, the positioning arrangement on the wheel 14 and the plurality of the blades 142 arranged according to the positioning arrangement are arranged such that the photodetector 12 can pass the order of the blade 142 and its spacing width. Sensing, the output sensing message is provided by the processor for processing. Since the structure simplification can reduce the cost, and at the same time, the defects caused by the current contact control of the turntable switch can be eliminated, and the durability and stability of the switch structure 10 can be effectively improved.

It should be noted that the above-described embodiments are merely preferred embodiments of the present invention, and those skilled in the art can make other changes within the spirit of the present invention. All changes made in accordance with the spirit of the invention are intended to be included within the scope of the invention.

10. . . Switch structure

12. . . Photoelectric detector

122. . . Opening

14. . . Runner

142. . . blade

144. . . Positioning slot

Claims (10)

A switch structure of an electronic device, comprising at least one photo-sensing device and a rotating wheel, the photo-electrical sensor is located at a fixed relative position with the rotating wheel, and the rotating wheel has a plurality of blade arrangements, the blade is according to the rotating wheel A set of positioning settings are arranged on the wheel, the blade arrangement having different spacing widths, the blades having the same area, the blades rotating through the photodetector as the turntable rotates. The switch structure of the electronic device of claim 1, wherein the photodetector is configured as a rectangular body having an opening at one end, and one of the two sides of the opening has a beam projection device The other side has a beam receiving device. The switch structure of the electronic device of claim 1, wherein the blade is opposed to the opening, and the blade passes through the optical path of the photo-inductor light in the opening. The switch structure of the electronic device of claim 1, wherein the positioning device is provided with a positioning groove on the wheel axle of the rotating wheel, and the positioning groove cooperates with the elastic positioning block. The switch structure of the electronic device of claim 4, wherein the positioning groove is disposed at an equal angle. The switch structure of the electronic device of claim 5, wherein the positioning groove is disposed at an equiangular angle of ninety degrees. The switch structure of the electronic device of claim 1, wherein the plurality of blades of the group are arranged opposite to the positioning groove. The switch structure of the electronic device according to claim 1, wherein the adjacent groups of the blades have different spacing widths, and the adjacent groups of the same group have a first width, adjacent different groups. The blades have a second width therebetween. The switch structure of the electronic device according to claim 1, wherein the blades of the respective groups are of the same width and have the same first width and the second width. The switch structure of the electronic device of claim 9, wherein the second width is at least three times greater than the first width.