TWI413268B - Photo interrupter - Google Patents

Abstract

A photo Interrupter is used to detect if an object is passed through or not. A light emitter is to emit a light beam. A light receiver is to receive the light beam and generate an output signal. A base has a first frame for holding the light emitter and a second frame for holding the light receiver. A channel is defined between the first and second frame to be passed through by the object along an axial direction. A first lead frame is disposed within the first frame and coupled with the light emitter. The first lead frame has a first conductive part and a second conductive part extending out of the frame along two opposite directions of the axial direction. A second lead frame is disposed within the second frame and coupled with the light receiver. The second lead frame has a third conductive part and a fourth conductive part extending out of the frame along two opposite directions of the axial direction.

Description

Photointerrupter

This invention relates to a photovoltaic element, and more particularly to a photointerrupter.

Photo Interrupts, which are currently used in consumer electronics, are becoming smaller and smaller, and are used in portable electronic devices (such as cameras, mobile phones, and other miniaturized consumer electronics).

In the process of miniaturization, the traditional plug-in process is bound to be challenged by technical challenges, and how to achieve miniaturization is the goal of competition.

At present, the more common methods are to use a printed circuit board, including placing the printed circuit board underneath and placing it on both sides. But both methods have great drawbacks. First, the thickness of the printed circuit board limits the height of the component relatively; therefore, such a process cannot be further developed into a customized product. In addition, congenitally, the printed circuit board is not very good in tin, and in the case of high-precision applications, the poor soldering of the printed circuit board can easily cause the components to tilt and cause malfunction.

In view of this, there are still many areas for improvement in miniaturized photointerruptors.

Accordingly, it is an object of the present invention to provide an improved photointerrupter.

According to the above object of the present invention, there is provided a photointerrupter for detecting a state in which an object passes, and the photointerrupter comprises the following parts. A light-emitting element is used to emit a light. A light receiving component is configured to receive light and emit a signal. A pedestal has a first frame accommodating the illuminating element and a second frame accommodating the illuminating element, and a channel is defined between the first frame and the second frame for the object to pass in an axial direction. The light is sequentially received by the light receiving element through a first opening of the first frame, the channel, and a second opening of the second frame. When the object passes through the channel, it blocks the light from reaching the light receiving element. A first conductive bracket is disposed in the first frame and coupled to the light emitting element. The first conductive support has a first conductive portion and a second conductive portion, and extends in the axial direction respectively to extend out of the first frame. A second conductive bracket is disposed in the second frame and coupled to the light receiving component. The second conductive support has a third conductive portion and a fourth conductive portion, and the second frame body extends in the opposite direction in the axial direction.

According to an embodiment of the invention, the base further includes a connecting portion connecting the first frame and the second frame, and the connecting portion, the first frame and the second frame jointly define the channel.

According to another embodiment of the present invention, the photointerrupter further includes a first colloid and a second colloid, respectively filled in the first frame and the second frame, and respectively sealing the light emitting element and the light receiving element.

According to another embodiment of the present invention, the first colloid and the second colloidal material are respectively selected from the group consisting of epoxy resin, methyl rubber, methyl resin, benzene ring rubber, benzene ring resin, organic denatured silicone, and combinations thereof. .

According to another embodiment of the invention, the first conductive support and the second conductive support are parallel to each other.

According to another embodiment of the invention, the first opening and the second opening are aligned with each other.

According to another embodiment of the present invention, the first conductive portion and the second conductive portion of the first conductive support are exposed to the outside of the first frame and the third conductive portion and the fourth conductive portion of the second conductive support are exposed to the first portion The parts outside the two frames have a right angle bend.

According to another embodiment of the present invention, the first conductive support and the second conductive support are exposed in the same plane at each end of the first frame and the second frame, and each end is cut into a bottom surface of one of the parallel bases. Form a surface sticking foot shape.

According to another embodiment of the present invention, the surface adhesive foot type includes a Dual ln-line Package (DIP) foot type.

In accordance with another embodiment of the present invention, the susceptor material is selected from the group consisting of polyparaphenylene terephthalamide, high temperature resistant nylon, liquid crystal resin, polyphthalamide, plastic, and combinations thereof.

As can be seen from the above, the structure design of the photointerrupter of the present invention can reduce the size of the photointerrupter to a smaller size, and can avoid the situation in which the component is tilted due to poor tin.

As described above, the present invention provides a miniaturized photointerrupter that directly encapsulates a light-emitting element and a light-receiving element by using two layers of colloid without using a printed circuit board, so that the volume of the photointerrupter can be reduced to least.

Referring to FIG. 1 and FIG. 2, FIG. 1 illustrates a photointerrupter in accordance with a preferred embodiment of the present invention. Figure 2 is a cross-sectional view of the photointerrupter of Figure 1 taken along line A-A'. The photointerrupter 100 is configured to detect a state in which an object (not shown) passes. The photointerrupter 100 includes a pedestal 101 having a first frame accommodating a light-emitting element 102. 103 and a second housing 105 accommodating a light receiving element 104. The first frame 103 and the second frame 105 define a passage 106 for the object to pass through an axial direction 107. The axial direction is not limited to the direction of the embodiment, and may also pass in the opposite axial direction. The light emitting element 102 emits a light, and the light is sequentially received by the light receiving element 104 through a first opening 108 of the first frame 103 and a second opening 109 of the second frame 105. The light receiving element 104 A signal is sent after receiving the light.

Referring to FIG. 1 and FIG. 2 , a first conductive bracket 110 is disposed in the first frame 103 and coupled to the light emitting element 102 . The first conductive bracket 110 has a reverse direction extending in the axial direction 107 . A first conductive portion 110a and a second conductive portion 110b of the first frame body 103. A second conductive support 111 is disposed in the second frame 105 and coupled to the light receiving component 104. The second conductive support 111 has a third conductive conductively extending from the second frame 105 in the axial direction 107. a portion 111a and a fourth conductive portion 111b.

The first conductive portion 110a and the second conductive portion 110b, the third conductive portion 111a and the fourth conductive portion 111b, the light-emitting element 102 and the light-receiving element 104, and a first colloid 112 and a second colloid 113 are used to encapsulate the above-mentioned component . Further, the first colloid 112 seals the light-emitting element 102 inside one of the first frames 103 and the second gel 113 seals the light-receiving element 104 inside one of the second frames 105. It should be noted that the materials of the first colloid 112 and the second colloid 113 are selected from the group consisting of epoxy resin, methyl rubber, methyl resin, benzene ring rubber, benzene ring resin, organic denatured silicone, and combinations thereof, but Not limited to this.

The first conductive portion 110a and the second conductive portion 110b are separated from each other (electrically insulated), and the third conductive portion 111a and the fourth conductive portion 111b are separated from each other (electrically insulated).

In this embodiment, the first conductive portion 110a is located in the same plane as the second conductive portion 110b, the third conductive portion 111a, and the fourth conductive portion 111b, and the first conductive bracket 110 is located in the first colloids 112 and 110. The parts are also roughly in the same plane. Further, the first conductive portion 110a and the third conductive portion 111a are parallel to each other and the second conductive portion 110b and the fourth conductive portion 111b are also parallel to each other in the extending direction of the axial direction 107.

The light emitting element 102 is located on the first conductive portion 110a and electrically connected to the first conductive portion 110a and the second conductive portion 110b. The light receiving element 104 is located on the third conductive portion 111a, and is electrically connected to the third conductive portion 111a and the fourth conductive portion 111b. The pedestal 101 covers the first colloid 112 and the second colloid 113 and covers portions of the first conductive portion 110a and the second conductive portion 110b, the third conductive portion 111a, and a fourth conductive portion 111b. The method of colloidal packaging may be Molding or a potting process. It should be noted that the material of the susceptor 101 is selected from the group consisting of polyparaphenylene terephthalamide, high temperature resistant nylon, liquid crystal resin, polyphthalamide, plastic, and combinations thereof.

The first frame 103 and the second frame 105 of the base 101 define a channel 106, and the two are connected by the connecting portion 101, so that the first frame 103, the second frame 105 and the connecting portion 101 are also jointly defined. Channel 106. The two opposite sidewalls of the channel 106 each have a first opening 108 exposing the first frame 103 and a second opening 109 of the second frame 105. The photointerrupter 100 utilizes the first opening 108 and the second opening 109 to allow light emitted by the light emitting element 102 to be received by the light receiving element 104. In the present embodiment, the opposite side walls of the channel 106 are parallel to each other, and the first opening 108 and the second opening 109 are aligned with each other. Moreover, the opposite side walls of the channel 106 are substantially perpendicular to the plane in which the first pair of conductive supports and the second conductive support are located. When any object (not shown) is inserted into the channel 106 of the photointerrupter 100, the light passing through the first opening 108 and the second opening 109 is blocked. The photointerrupter 100 determines whether the shade is inserted into the channel 106 by the interruption of the light. In this embodiment, the first colloid 112 and the second colloid 113 have a light transmission degree greater than that of the susceptor 101, and the susceptor 101 preferably blocks light, so most of the light passes through the first opening 108 and The second opening 109 does not interfere with the operation of the photointerrupter 100.

Please refer to Figures 3 and 4, which illustrate a photointerrupter in accordance with another preferred embodiment of the present invention. The embodiment of Figures 3 and 4 differs from the embodiment of Figure 1 above only in the shape of the conductive support.

In FIG. 3, the conductive support is a DIP (Dual In-line Package) type of a symmetrical pin package, characterized in that each of the conductive portions 110a, 110b, 111a, and 111b is exposed to the base 101. All of the portions have a right angle bend 112, and all of the end portions 113 of the conductive bracket are located in the same plane and away from the bottom surface 114 of the base 101 to form a DIP foot.

In FIG. 4, the conductive support is an SMD (Surface Mounting Device) foot type, and the portion in which each of the conductive portions 110a, 110b, 111a, and 111b is exposed outside the base 101 has a right angle bend 115, and All of the ends 116 of the conductive support are in the same plane and are aligned with the bottom surface 117 of the base 101.

It can be seen from the above preferred embodiment of the present invention that the optical interrupter structure design of the present invention can reduce the size of the photointerrupter to a smaller size, and can avoid the situation in which the tin is poor and the component is tilted.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100. . . Photointerrupter

101. . . Pedestal

101a. . . Connection

102. . . Light-emitting element

103. . . First frame

104. . . Light receiving element

105. . . Second frame

106. . . aisle

107. . . Axial

108. . . First opening

109. . . Second opening

110. . . First conductive bracket

110a. . . First conductive part

110b. . . Second conductive portion

111. . . Second conductive bracket

111a. . . Third conductive part

111b. . . Fourth conductive part

112. . . First colloid

113. . . Second colloid

The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood.

1 is a view showing a photointerrupter in accordance with a preferred embodiment of the present invention;

Figure 2 is a cross-sectional view of the photointerrupter of Figure 1 taken along line A-A';

3 is a view showing a photointerrupter according to another preferred embodiment of the present invention;

4 is a view showing a photointerrupter in accordance with still another preferred embodiment of the present invention.

100. . . Photointerrupter

101. . . Pedestal

101a. . . Connection

102. . . Light-emitting element

106. . . aisle

107. . . Axial

109. . . Second opening

110. . . First conductive bracket

110a. . . First conductive part

110b. . . Second conductive portion

111. . . Second conductive bracket

111a. . . Third conductive part

111b. . . Fourth conductive part

Claims (10)

A photointerrupter for detecting a state of passage of an object, the photointerrupter comprising: at least one light emitting component for emitting a light; and a light receiving component for receiving the light and emitting a signal; a pedestal having a first frame accommodating the illuminating element and a second frame accommodating the light receiving element, wherein the first frame and the second frame define a passage for the object An axial passage, wherein the light is sequentially received by the light receiving element through a first opening of the first frame, the channel, and a second opening of the second frame, when the object passes When the channel is blocked, the light is blocked from reaching the light receiving component; a first conductive bracket is disposed in the first frame and coupled to the light emitting component, the first conductive bracket has a first conductive portion and a second a conductive portion extending in opposite directions from the first frame; and a second conductive bracket disposed in the second frame and coupled to the light receiving component, the second conductive bracket having a third a conductive portion and a fourth conductive portion extending in opposite directions in the axial direction The second frame. The photointerrupter of claim 1, wherein the base further comprises a connecting portion connecting the first frame and the second frame, the connecting portion, the first frame and the first The two frames together define the channel. The photointerrupter of claim 1, further comprising a first colloid and a second colloid, respectively filled in the first frame and the second frame, and respectively sealing the light emitting component And the light receiving element. The photointerrupter of claim 3, wherein the first colloid and the second colloidal material are respectively selected from the group consisting of epoxy resin, methyl rubber, methyl resin, benzene ring rubber, Benzene ring resin, organically modified silicone and combinations thereof. The photointerrupter of claim 1, wherein the first conductive support and the second conductive support are parallel to each other. The photointerrupter of claim 1, wherein the first opening and the second opening are aligned with each other. The photointerrupter of claim 1, wherein the first conductive portion of the first conductive support and the second conductive portion are exposed outside the first frame and the second conductive support The portions of the third conductive portion and the fourth conductive portion exposed to the outside of the second frame respectively have a right angle bend. The photointerrupter of claim 7, wherein the first conductive support and the second conductive support are exposed in the same plane at each end of the first frame and the second frame, and Each end is aligned parallel to a bottom surface of the base to form a surface-adhesive foot. The photointerrupter of claim 8, wherein the surface adhesive leg comprises a Dual ln-line Package (DIP) foot. The photointerrupter of claim 1, wherein the susceptor material is selected from the group consisting of polyparaphenylene terephthalamide, high temperature resistant nylon, liquid crystal resin, polyphthalate Amines, plastics and combinations thereof.