CN100411499C - Closure structure for a hand-held device - Google Patents

Abstract

The invention relates to a closed structure for a handheld device, which utilizes an elastic ring to be adjacently arranged above the periphery of a key substrate so as to surround a key sheet plate with a plurality of keys. An elastic sealing part is arranged below the key substrate, so that the ring structure surrounds the periphery of the circuit substrate, and the film structure extends inwards from the ring structure between the key substrate and the circuit substrate. The upper surface of the ring contacts the inner surface of the casing of the hand held device, and the lower surface contacts the upper surface of the key substrate to isolate the inside of the hand held device. In addition, the annular upper surface of the annular structure contacts the lower surface of the periphery of the key substrate, and the lower surface contacts the upper surface of the bearing substrate, so as to isolate and seal the space where the circuit substrate is located.

Description

Enclosure structure for handheld devices

technical field

The present invention relates to a closed structure, especially a closed structure used in a hand-held device.

Background technique

Hand-held devices such as mobile phones and PDAs have become popular in the lives of modern people. The convenience of their portable use has brought great help to modern people who are running around.

However, because of the constant movement, the environment where the handheld device is located is not stable, sometimes in a coffee shop, sometimes at the seaside... . Therefore, if you are not careful, rainwater, fruit juice, and dust will often seep into the handheld device, which will seriously damage the circuit board and related electrical components inside the handheld device.

Therefore, the main purpose of the present invention is to provide a closed structure for a handheld device to solve the above problems.

Contents of the invention

The object of the present invention is to prevent pollutants from penetrating into the handheld device by using a closed structure for the handheld device, so as to protect the circuit board and related electrical components inside the handheld device.

The present invention relates to a closed structure for a handheld device, which is used to close the interior of the handheld device corresponding to a plurality of keys, and the plurality of keys is a keypad. Wherein the button sheet is arranged on the upper surface of the metal button substrate, and a hole is set on the button substrate corresponding to each button. A carrier substrate fixed inside the shell of the handheld device is arranged under the button substrate. A circuit substrate is arranged on the upper surface of the carrier substrate. The circuit substrate is provided with a plurality of electrical contacts vertically corresponding to the plurality of buttons. The closing structure includes an elastic ring and an elastic closing part.

The elastic ring is made of rubber material, adjacent to the upper edge of the key substrate, and surrounds the plurality of keys from the side of the key plate.

The elastic closing part is made of rubber material, and is arranged under the key substrate, and includes a ring structure and a film structure. The ring structure is arranged under the peripheral edge of the key substrate and surrounds the circuit substrate. The thin film structure extends inwardly from the ring structure between the key substrate and the circuit substrate.

Wherein, the annular upper surface of the elastic ring contacts the inner surface of the upper shell of the handheld device, and the annular lower surface of the elastic ring contacts the upper surface of the periphery of the button substrate, thereby isolating the interior of the handheld device. The ring-shaped upper surface of the ring structure contacts the lower surface of the periphery of the button substrate, and the ring-shaped lower surface of the ring structure contacts the upper surface of the carrier substrate, thereby isolating and sealing the space where the circuit substrate is located.

Wherein, the thin film structure is adhered to the bottom of the key through the hole, and a key column is extended downwardly under the film structure adhered to the key, and by pressing the key, the key column presses down to touch the key. Electrical contacts on circuit boards.

Therefore, the sealing structure applied to the handheld device of the present invention uses the elastic ring and the elastic sealing member to prevent pollutants from penetrating into the handheld device, so as to protect the circuit board and related electrical components inside the handheld device.

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

Description of drawings

Fig. 1 is a schematic diagram of the button sheet of the present invention; and

Fig. 2 is a schematic diagram of the closure structure of the present invention.

Detailed ways

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of a button sheet 31 of the present invention. A general electronic device needs to be equipped with a plurality of keys 3102 for inputting commands. Hand-held devices such as mobile phones or PDAs have a plurality of keys 3102 arranged adjacent to each other, so the key pad 31 (keypad) shown in the figure is usually installed on the hand-held device, and a plurality of keys on the key pad 31 3102 to perform the function of inputting instructions.

Please refer to FIG. 2 . FIG. 2 is a schematic diagram of the sealing structure 50 of the present invention. The present invention relates to a sealing structure 50 for a handheld device 30 for sealing the interior of the handheld device 30 corresponding to a plurality of keys 3102 . As shown in the cross-sectional structure of the handheld device 30 in FIG. A carrier substrate 35 fixed inside the housing 40 of the handheld device 30 is disposed below. A circuit substrate 34 is disposed on the upper surface of the carrier substrate 35 , and the circuit substrate 34 is provided with a plurality of electrical contacts vertically corresponding to the plurality of keys 3102 .

The sealing structure 50 further includes an elastic ring 52 and an elastic sealing component 54 . The elastic ring 52 is disposed adjacently above the peripheral edge of the key substrate 32 and surrounds the plurality of keys 3102 from the side of the key plate 31 .

The elastic sealing part 54 is disposed under the key substrate 32 and includes a ring structure 5402 and a film structure 5404 . The ring structure 5402 is disposed below the periphery of the key substrate 32 and surrounds the circuit substrate 34 . The film structure 5404 extends inward from the ring structure 5402 between the key substrate 32 and the circuit substrate 34 .

The film structure 5404 passes through the holes to adhere to the bottom of the keys 3102 , and the film structure 5404 adheres to the bottom of the keys 3102 and extends downward to a key column 56 . By pressing the key 3102 , the key column 56 is pressed down to touch the electrical contacts on the circuit substrate 34 .

Wherein, the material of the elastic ring 52 and the elastic sealing part 54 can be rubber. The annular upper surface of the elastic ring 52 contacts the inner surface of the upper casing 40 of the handheld device 30 , and the annular lower surface of the elastic ring 52 contacts the upper surface of the periphery of the key substrate 32 , so as to isolate the interior of the handheld device 30 . The annular upper surface of the ring structure 5402 contacts the lower surface of the key substrate 32 , and the annular lower surface of the annular structure 5402 contacts the upper surface of the carrier substrate 35 , thereby isolating and sealing the space where the circuit substrate 34 is located.

Further, like the aforementioned closed structure 50 , an elastic ring retaining wall 36 is disposed on the inner surface of the upper shell 40 of the handheld device 30 and inside the elastic ring 52 . On the upper surface of the periphery of the carrier substrate 35 and inside the ring structure 5402 is provided a ring structure retaining wall 37 . In order to make it more convenient to assemble the elastic ring 52 and the elastic sealing part 54, it is only necessary to put the elastic ring 52 and the ring structure 5402 on the outer edges of the elastic ring retaining wall 36 and the ring structure retaining wall 37 respectively. In addition, the ring structure retaining wall 37 and the elastic ring retaining wall 36 also have the function of positioning the ring structure 5402 and the elastic closing member 54 .

Therefore, the sealing structure 50 utilized in the handheld device 30 of the present invention utilizes the elastic ring 52 and the elastic sealing member 54 to prevent pollutants from penetrating into the handheld device 30, so as to protect the circuit board 34 inside the handheld device 30 and related components. electrical components.

Through the above detailed description of the preferred embodiments, it is hoped that the characteristics and spirit of the present invention can be described more clearly, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the intention is to cover various changes and equivalent arrangements within the scope of the claimed patent scope of the present invention.

Claims (7)

1. enclosed construction that is used for handheld apparatus, in order to seal the handheld apparatus inside of corresponding a plurality of buttons, wherein these a plurality of buttons are arranged at the upper surface of a button substrate, corresponding each button is provided with a hole on this button substrate, this button substrate below is provided with a bearing substrate that is fixed in this handheld apparatus enclosure, this bearing substrate upper surface is provided with a circuit substrate, to to being provided with a plurality of electrical contacts by a plurality of buttons, this enclosed construction comprises this circuit substrate with vertically:

One elastic ring ring, contiguous being arranged at above this button substrate periphery, and the side of these a plurality of buttons surrounds these a plurality of buttons certainly; And

One enclosed elastic parts, be arranged at this button substrate below, comprise a circular ring structure and a membrane structure, this circular ring structure is arranged at this button substrate periphery below, and surround this circuit substrate around, this membrane structure extends internally between this button substrate and this circuit substrate from this circular ring structure;

Wherein, the ring-type uper side surface of this elastic ring ring contacts the inner surface of this handheld apparatus upper case, the ring-type downside surface of this elastic ring ring contacts the upper surface of this button substrate periphery, use and isolate this handheld apparatus inside, the ring-type uper side surface of this circular ring structure contacts the lower surface of this button substrate periphery, the ring-type downside surface of this circular ring structure contacts the upper surface of this bearing substrate, uses the space that isolates and seal this circuit substrate place.

2. enclosed construction as claimed in claim 1, it is characterized in that this membrane structure sees through this hole to adhere to this button bottom, this membrane structure adheres to the below of this button and extends a key post downwards, see through and depress this button, so that this key post is to pressing down the electrical contact that touches on this circuit substrate.

3. enclosed construction as claimed in claim 1 is characterized in that, at the inner surface of this handheld apparatus upper case, and in this elastic ring ring inboard one elastic ring ring barricade is set.

4. enclosed construction as claimed in claim 1 is characterized in that, at the upper surface of this bearing substrate periphery, and in this circular ring structure inboard one circular ring structure barricade is set.

5. enclosed construction as claimed in claim 1 is characterized in that, these a plurality of buttons are a button piece plate.

6. enclosed construction as claimed in claim 1 is characterized in that, the material of this elastic ring ring and these enclosed elastic parts is a rubber.

7. enclosed construction as claimed in claim 1 is characterized in that, the material of this button substrate is a metal.

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