CN2840538Y

CN2840538Y - Waterproof device for keys

Info

Publication number: CN2840538Y
Application number: CN 200520067544
Authority: CN
Inventors: 胡家英; 谢睿
Original assignee: Konka Group Co Ltd
Current assignee: Konka Group Co Ltd
Priority date: 2005-11-11
Filing date: 2005-11-11
Publication date: 2006-11-22
Anticipated expiration: 2015-11-11

Abstract

The utility model discloses a waterproof device for a press key, which comprises a boundary assembled along a casing and the press key, a groove and a raised rib which are respectively arranged on corresponding positions of the back surface of the casing and the front surface of the press key. When the casing and the press key are assembled, the raised rib is embedded into the groove, forming interference fit. After the waterproof device for a press key of the utility model is assembled through the interference fit between the groove and the raised rib arranged on the casing and the assembly boundary of the press key, a sealing ring is formed between the casing and the press key. Thereby, water vapor is effectively prevented from entering into the device through the press key and inner components can be protected. The utility model has the advantages of electrostatic and dust prevention and enhancement of device functions and service life.

Description

The button water-tight device

Technical field

The utility model relates to the button of handheld devices such as mobile phone, more particularly, relates to a kind of button water-tight device.

Background technology

Generally, during the assembling of the key-press module of handheld devices such as mobile phone and shell, all be on shell, to offer corresponding hole, button is sleeved on below shell each hole on the shell, the salient point contact circuit plate by the button back side again, induction input information.Because the feel of foozle and consideration button all can have certain clearance after button and the shell assembling.Thereby the consumer is in the process of using this equipment, owing to there was dampness in the air, rain or meet reason such as water because of carelessness, water or aqueous vapor are easy to by the access arrangement inside, gap between button and the shell, make inner electronic devices and components and circuit board make moist and be corroded, perhaps even cause damage, have a strong impact on the function and the useful life of mobile phone.

The utility model content

The technical problems to be solved in the utility model is, at the above-mentioned defective of prior art, provides a kind of button water-tight device, forms sealing, water proof and dust proof between button and shell.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of button water-tight device is provided, comprise the groove and the convex tendon that are separately positioned on the described shell back side and described button front correspondence position along the border of shell and button assembling, when described shell and the assembling of described button, described convex tendon embeds and forms interference fit in the described groove.

In button water-tight device described in the utility model, described groove is arranged on the back side of described shell along the border of described shell and the assembling of described button, and correspondingly, described convex tendon is arranged on the corresponding position in described button front.

In button water-tight device described in the utility model, described groove is arranged on the front of described button along the border of described shell and the assembling of described button, and correspondingly, described convex tendon is arranged on the corresponding position at the described shell back side.

In button water-tight device described in the utility model, the height of described convex tendon is slightly larger than the degree of depth of described groove.

In button water-tight device described in the utility model, the width of described convex tendon is slightly larger than the width of described groove.

Implement the water-tight device of button of the present utility model; has following beneficial effect: the water-tight device of button of the present utility model; assemble interference fit between borderline groove and the convex tendon by being arranged on shell and button; the assembling back forms a sealing ring between shell and button; thereby effectively stop aqueous vapor to pass through button access arrangement inside; protect inner components and parts, all right antistatic and dust, the function and the useful life that strengthen equipment.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1-a is the structural representation of shell among the embodiment of the utility model button water-tight device;

Fig. 1-b is the structural representation at the back side of the shell shown in Fig. 1-a;

Fig. 1-c is the cutaway view at B place in position in the shell shown in Fig. 1-a;

Fig. 2-a is the structural representation of key-press module among the embodiment of the utility model button water-tight device;

Fig. 2-b is the cutaway view at A place in position in the key-press module shown in Fig. 2-a;

Fig. 3-a is the cutaway view after shell and the key-press module assembling among the embodiment of the utility model button water-tight device;

Fig. 3-b is the partial enlarged drawing at C place in position among Fig. 3-a.

Embodiment

Fig. 1-a is the structural representation of shell among the embodiment of the utility model button water-tight device.Shown in Fig. 1-a, shell 100 is provided with a plurality of holes 102, and the position of each key zone 202 is corresponding on the position in hole 102 and the key-press module 200, so that button 202 is sleeved on wherein.When shell 100 assembles with key-press module 200, certain clearance is always arranged between the two, aqueous vapor, dust etc. just can pass through this access arrangement inside, gap like this, influence the work of internal circuit board, even can damage circuit board.Therefore, shown in Fig. 1-b and Fig. 1-c, the utility model is provided with groove 101 at the back side of shell 100 and the marginal position place of this key-press module assembling, and this groove 101 distributes along the assembling border, becomes closed circular.Correspondingly, in the key-press module 200 shown in Fig. 2-a and Fig. 2-b,, be provided with a corresponding circle convex tendon 201 along edge with shell 100 assemblings in the front of this key-press module 200.After shell 100 was assembled together with key-press module 200, convex tendon 201 embedded and forms sealing in the groove 101, shown in Fig. 3-a, thereby intercepts outside access arrangement inside such as aqueous vapor, influences the circuit board 300 of key-press module 200 bottoms.

Shell 100 is generally the plastic cement shell, and key-press module 200 generally all adopts silica gel (or TPU, rubber etc.) to make, and has certain elasticity.Convex tendon 201 is one-body molded with button, adopts identical material.Can adopt interference fit between convex tendon 201 and the groove 101, between convex tendon 201 and groove 101, form sealing.For example, shown in Fig. 3-b, the height that is arranged on the convex tendon 201 in key-press module 200 fronts can be slightly larger than the degree of depth of the groove that is arranged on shell 100 back sides, like this, in the two assembling process, the vertical compression of convex tendon 201 pressurizeds is embedded in groove 101 inside closely, and any gap can occur.Or the width that convex tendon 201 can be set is slightly larger than the width of groove 101, like this in assembling process, and convex tendon 201 pressurizeds and the transverse compression distortion is embedded in the inside of groove 101 closely, and any gap can occur.

In the above embodiments, key-press module 200 is as a whole, thereby has only an assembling border during with shell 100 assembling, thereby the groove 101 and the convex tendon 201 of a circle are set on shell 100 and key-press module 200 respectively.Be set in the situation in each corresponding hole of shell for key-press module by one or more button submodules, can with the assembling border of corresponding shell a plurality of grooves and convex tendon be set respectively, form a plurality of sealing rings along each button submodule.

In the above embodiments, groove 101 is arranged on the back side of shell 101, and convex tendon 201 is arranged on the front of key-press module 200, and assembling back convex tendon 201 embeds and forms sealing in the groove 101.Similarly, groove can also be opened in the front of key-press module, and in the relevant position, the back side of shell the convex tendon of interference fit with it be set, during assembling, groove is subjected to squeeze distortion, forms sealing between groove and the convex tendon, prevents that aqueous vapor, dust etc. from entering.

The button water-tight device that the utility model is above-mentioned can be applied in various buttons and the shell assembling all-in-one-piece electronic equipment, for example various handheld devices such as mobile phone, MP3 player, personal digital assistant.

Claims

1, a kind of button water-tight device, it is characterized in that, comprise the groove and the convex tendon that are separately positioned on the described shell back side and described button front correspondence position along the border of shell and button assembling, when described shell and the assembling of described button, described convex tendon embeds and forms interference fit in the described groove.

2, button water-tight device according to claim 1 is characterized in that, described groove is arranged on the back side of described shell along the border of described shell and the assembling of described button, and correspondingly, described convex tendon is arranged on the corresponding position in described button front.

3, button water-tight device according to claim 1 is characterized in that, described groove is arranged on the front of described button along the border of described shell and the assembling of described button, and correspondingly, described convex tendon is arranged on the corresponding position at the described shell back side.

4, according to each described button water-tight device in the claim 1 to 3, it is characterized in that the height of described convex tendon is slightly larger than the degree of depth of described groove.

5, according to each described button water-tight device in the claim 1 to 3, it is characterized in that the width of described convex tendon is slightly larger than the width of described groove.