CN212259065U - Key structure and mobile terminal - Google Patents

Abstract

The utility model relates to a button structure and mobile terminal. This button structure includes button body, cooperation post and bolster, the cooperation post with button body structure as an organic whole, the bolster cover is located the cooperation post, mobile terminal includes the casing and locates the support of casing, the casing is equipped with according to the keyway, the support seted up with the storage tank of button groove intercommunication, the button body wears to locate according to the keyway, the cooperation post with the bolster hold in the storage tank. Above-mentioned button structure, through the mutual cooperation of the bolster of locating the cooperation post through the cover and the support in the mobile terminal, can inject the relative motion of button body and casing, effectively avoid the relative casing of button body to take place to rock.

Description

Key structure and mobile terminal

Technical Field

The utility model relates to an electronic equipment technical field especially relates to a button structure and mobile terminal.

Background

The mobile phone is usually provided with keys such as a power key and a volume key, and a user can control the mobile phone to turn on or off, adjust the volume and the like by pressing the keys. In order to be convenient to press, the keys and the mobile phone shell adopt a clearance fit mode. In the production process of the mobile phone, errors inevitably exist, when the width dimension of the key is the minimum value and the width dimension of the groove body used for installing the key on the shell is the maximum value, the problem that the key shakes relative to the shell is very likely to occur, namely, when the key is not pressed, the key moves relative to the shell. In order to solve the above problems, the prior art generally adopts a strict tolerance control mode, which puts higher requirements on the dimensional accuracy and stability of the product, inevitably loses yield within a certain range, and leads to cost increase.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a key structure and a mobile terminal, which address the problem that the key is prone to shake.

The utility model provides a key structure, is applied to mobile terminal, key structure includes button body, cooperation post and bolster, the cooperation post with button body structure as an organic whole, the bolster cover is located the cooperation post, mobile terminal includes the casing and locates the support of casing, the casing is equipped with according to the keyway, the support seted up with the storage tank of key groove intercommunication, the button body is worn to locate according to the keyway, the cooperation post with the bolster holds in the storage tank.

In one embodiment, the size of the fitting column is smaller than that of the receiving groove.

In one embodiment, the outer wall of the matching column is provided with a groove, and the buffer piece is accommodated in the groove.

In one embodiment, a gap is formed between the key body and the side wall of the key slot, and the width of the gap is 0.05 mm-0.1 mm.

In one embodiment, the key structure further includes a key post and a key circuit board, the key circuit board is provided with a switch, the key post is arranged opposite to the switch, and the key post can trigger the switch under the pushing of the key body.

In one embodiment, the bracket comprises an accommodating part, the tail end of the key circuit board is fixed in the accommodating part, the bracket is further provided with a through hole communicated with the accommodating part, and the key post penetrates through the through hole and is partially positioned in the accommodating part.

In one embodiment, the key structure further includes a sealing ring, and the sealing ring is sleeved on the key post and abuts against the inner wall of the through hole.

In one embodiment, the key body is provided with a connecting portion, the bracket is provided with an assembling groove, and the key structure further comprises a fixing member, wherein the fixing member is arranged in the assembling groove and clamped with the connecting portion to limit the relative position of the key body and the shell.

In one embodiment, flanges are formed on both sides of the key body, and the flanges form positional interference with the housing.

A mobile terminal comprises the key structure.

The utility model provides a button structure and include button structure's mobile terminal locates mutually supporting of bolster and the support in the mobile terminal of cooperation post through the cover, can inject the relative motion of button body and casing, effectively avoids the relative casing of button body to take place to rock, simultaneously because the bolster has certain compression capacity, guarantees that button structure can normally press, can not influence the use of button structure and feel.

Drawings

FIG. 1 is an exploded view of a mobile terminal in one embodiment;

FIG. 2 is a side view of the mobile terminal shown in FIG. 1;

FIG. 3 is a partial cross-sectional view of the mobile terminal of FIG. 2 taken along direction B-B;

fig. 4 is an enlarged view of the mobile terminal a shown in fig. 3;

fig. 5 is a schematic structural diagram of a key body of the mobile terminal shown in fig. 3.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, a key structure 100 such as a volume key and a power key is generally disposed on the mobile terminal 200, and a part of the key structure 100 is exposed outside a housing of the mobile terminal 200, so that a user can conveniently perform operations such as adjusting volume, turning on and off a computer, lighting up or closing a display screen, and in addition, screen capturing can be performed through a combination of a plurality of keys, which is convenient and fast and improves user experience. Specifically, the mobile terminal 200 may be a smart phone, a tablet computer, a Personal Digital Assistant (PDA), a point of sale (POS), a vehicle-mounted computer, a wearable device, or the like. The smart phone is exemplified herein, and it should be understood that the scope of the present invention is not limited thereto.

The smart phone 200 includes a housing 210, a display screen and a rear cover, the display screen is disposed on one side of the housing 210, the rear cover is disposed on one side of the housing 210 departing from the display screen, and the key structure 100 is disposed on a side surface of the housing 210.

In order to better solve the problem of key shaking, in an embodiment, please refer to fig. 3 and fig. 4, the key structure 100 includes a key body 10, a mating post 20 and a buffer 30, the mating post 20 and the key body 10 are an integral structure, and the buffer 30 is sleeved on the mating post 20. The casing 210 has a key slot 211, and the key body 10 is inserted into the key slot 211. The smartphone 200 further includes a holder 220 disposed on the housing 210, the holder 220 is provided with a receiving groove 221 communicated with the key groove 211, and the matching column 20 and the buffer 30 are received in the receiving groove 221.

The key structure 100 can limit the relative movement of the key body 10 and the housing 210 along the length direction and the width direction of the key body 10 by the mutual matching of the buffer 30 sleeved on the matching column 20 and the bracket 220, and effectively prevents the key body 10 from shaking relative to the housing 210. Meanwhile, the buffer 30 has a certain compression amount, so that the key structure 100 can be normally pressed, and the use hand feeling of the key structure 100 is not affected. The longitudinal direction of the key body 10 is the Z direction shown in fig. 2, and the width direction of the key body 10 is the X direction shown in fig. 2.

In an embodiment, the buffer 30 is in interference fit with the receiving groove 221.

The matching column 20 and the key body 10 are integrated, and the relative movement between the key body 10 and the housing 210 can be effectively avoided by limiting the position of the matching column 20. The matching column 20 and the key body 10 are made of the same material and are conveniently formed integrally. The buffer 30 may be made of silicon rubber, styrene butadiene rubber, ethylene propylene rubber, or the like.

The key structure 100 may be a volume key or a power key. When the key structure 100 is a power key, the matching column 20 is disposed at an end of the key body 10, or the matching column 20 may be disposed at a middle portion of the key body 10. When the fitting post 20 is disposed at the middle portion of the key body 10, the fitting post 20 may also serve as a key post. When the key structure 100 is a volume key, the matching column 20 is disposed in the middle of the key body 10, and when one end of the key body 10 is pressed, the volume can be increased, and when the other end of the key body 10 is pressed, the volume can be decreased, thereby adjusting the volume.

In an embodiment, the housing 210 is a middle frame of the smart phone 200, and may be made of a metal material by stamping, such as aluminum alloy, titanium alloy, stainless steel, steel-aluminum composite die casting, and the like, so as to ensure the structural strength of the smart phone 200. The housing 210 may also be made of plastic, which may reduce weight and cost while ensuring the structural strength of the smart phone 200. The bracket 220 is a plastic member formed inside the housing 210, and provides a mounting space for other components of the smart phone 200.

In some embodiments, the bracket 220 is formed inside the casing 210 made of metal by injection molding, and the bracket 220 and the casing 210 are an integral structure. In other embodiments, the bracket 220 and the housing 210 are made of plastic, and the bracket 220 and the housing 210 can be formed by an integral molding process, such as an injection molding process.

Because the key body 10 is partially exposed out of the casing 210, in order to ensure the appearance consistency between the casing 210 and the key body 10, the key body 10 is made of the same material as the casing 210, so as to ensure the consistency of the hand feeling of the user, that is, the key body 10 may be made of metal or plastic.

The size of the matching column 20 is smaller than the size of the accommodating groove 221, that is, the matching column 20 and the accommodating groove 221 are in clearance fit, so as to avoid affecting the pressing hand feeling of the key structure 100.

The buffer 30 is a ring structure and is sleeved outside the mating column 20. The outer wall of the matching column 20 is provided with the groove 21, the buffer member 30 is accommodated in the groove 21, the buffer member 30 is placed in the groove 21 of the matching column 20, the buffer member 30 can be prevented from falling off from the matching column 20 or moving relative to the matching column 20, and the assembling precision is improved.

A gap is formed between the key body 10 and the side wall of the key groove 211, and the width of the gap is 0.05 mm-0.1 mm. The key body 10 and the key groove 211 are in clearance fit, and when the key body 10 moves to a certain extent under the pressing action, the clearance provides a movement space for the key body 10, so that the user can conveniently press the key structure 100. In order to ensure the matching precision of the key body 10 and the key groove 211, the range of the gap width is 0.05 mm-0.1 mm.

The key structure 100 further includes a key post 40 and a key circuit board 50, the key circuit board 50 is provided with a switch 51, the key post 40 is opposite to the switch 51, and the key post 40 can trigger the switch 51 under the pushing of the key body 10. The switch 51 may be a touch switch or an inductive switch, and when the switch 51 is a touch switch, the switch 51 may be a dome sheet (dome sheet), and may sense a touch pressure, and convert a pressing action of the user on the key structure 100 into a signal for volume adjustment, power on/off, and the like, and transmit the signal to the motherboard.

In an embodiment, the key circuit board 50 is a flexible printed circuit board, the key circuit board 50 is connected to a main board of the smart phone 200, and the end of the key circuit board 50 is bent to be parallel to the side of the housing 210, so that the switch 51 at the end of the key circuit board 50 is disposed opposite to the key post 40.

It should be noted that the key post 40 is made of a plastic material to avoid interference with the antenna component inside the smart phone 200. In the present embodiment, the key post 40 and the key body 10 are separate structures, and the key body 10 is provided with a convex post 12 abutting against the key post 40.

The bracket 220 includes an accommodating portion 222, the end of the key circuit board 50 is bent and extended and is fixed in the accommodating portion 222, the bracket 220 is further provided with a via hole 223 communicated with the accommodating portion 222, and the key post 40 penetrates through the via hole 223 and is partially located in the accommodating portion 222. The key structure 100 further includes a mounting block 80, wherein the cross-section of the mounting block 80 is shaped to match the inner cavity of the receiving portion 222 for fixing the end of the key circuit board 50 to the receiving portion 222.

The button post 40 can conduct the pressing force that the user applied to the button body 10 on the one hand, and on the other hand, the button post 40 can keep apart outside steam and dust, prevents that steam or dust from getting into inside the support 220, and influence smart mobile phone 200's performance.

The key structure 100 further includes a sealing ring 60, wherein the sealing ring 60 is sleeved on the key post 40 and abuts against the inner wall of the through hole 223. Due to the arrangement of the sealing ring 60, the dustproof and waterproof performance of the key structure 100 can be further improved, and water vapor and dust are prevented from entering the support 220 from a gap between the key post 40 and the via hole 223.

It can be understood that there are various ways to fix the key body 10 to the housing 210. In one embodiment, the key body 10 is provided with the connecting portion 11, the bracket 220 is provided with an assembling groove 224, and the key structure 100 further includes a fixing member 70, wherein the fixing member 70 is disposed in the assembling groove 224 and used for defining the relative positions of the key body 10 and the housing 210. This arrangement facilitates assembly of the key body 10 from outside the housing 210. Specifically, when the key body 10 is assembled, the key body 10 is aligned with the key groove 211 formed in the side surface of the housing 210, the key body 10 is then assembled into the housing 210 through the key groove 211, and the fixing member 70 is placed in the assembly groove 224 from the back surface of the housing 210 to fix the key body 10. The rear surface of the housing 210 refers to a side of the housing 210 on which the rear cover is provided.

Further, referring to fig. 4, the number of the connecting portions 11 is 2, and the 2 connecting portions 11 are respectively disposed at two ends of the key body 10, wherein one side of the key body 10 departing from the connecting portions 11 is exposed outside the housing 210. The connecting portion 11 has a hook-shaped structure and is formed with an engagement groove 11a, the fixing member 70 includes an engaging portion 71 and an engaging portion 72 connected to each other, the engaging portion 71 is interference-fitted with the fitting groove 224 in the width direction (Y direction shown in fig. 4), and the engaging portion 72 is clearance-fitted with the engagement groove 11 a. The fitting portion 71 of the fixing member 70 is interference-fitted with the fitting groove 224 in the width direction (Y direction shown in fig. 4) to avoid the fitting portion 71 from wobbling in the fitting groove 224. The engaging portion 72 of the fixing member 70 is engaged with the engaging groove 11a of the key body 10, so as to prevent the key body 10 from falling off the housing 210. The engaging portion 72 and the engaging groove 11a are disposed in a clearance fit to ensure that the key body 10 can be displaced within a certain range when pressed.

It will be appreciated that the fixing member 70 is made of plastic material, and can be elastically deformed to some extent for assembly.

In other embodiments, referring to fig. 5, flanges 10a are formed on both sides of the key body 10, and the flanges 10a interfere with the housing 210, so that the flanges 10a are clamped inside the housing 210, and at this time, the key body 10 needs to be assembled from the inside of the housing 210, and thus, an installation space needs to be reserved. Specifically, in the assembling process of the key body 10, the outer side of the key body 10 is aligned with the key groove 211, and then the key body 10 is pushed out of the housing 210 through the key groove 211, wherein the flange 10a is clamped inside the housing 210 to prevent the key body 10 from falling off from the key groove 211.

The smart phone 200 further includes a rear cover (not shown), when the components on the housing 210 and the bracket 220 are assembled, the rear cover is assembled to the housing 210, and the key circuit board 50, the fixing member 70, the mounting block 80 and other components are located in a cavity formed by the rear cover and the housing 210, so as to isolate the internal components from the external environment and ensure the aesthetic property of the smart phone 200.

In one embodiment, the key structure 100 is assembled as follows:

bending the end of the key circuit board 50 provided with the switch 51 and inserting the end into the mounting block 80, placing the mounting block 80 in the accommodating part 222 on the bracket 220, and arranging the main body part of the key circuit board 50 adjacent to the bracket 220;

a sealing ring 60 is sleeved on the key post 40, and then the key post 40 is arranged in a through hole 223 formed in the bracket 220 in a penetrating manner;

the buffer member 30 is sleeved on the matching column 20, so that the convex column 12 of the key body 10 is aligned with the key column 40 on the bracket 220, the matching column 20 is aligned with the accommodating groove 221, and then the key body 10 is placed in the key groove 211 on the housing 210, and the connecting part 11 arranged on the key body 10 is positioned in the assembling groove 224;

the fastener 70 is placed in the fitting groove, and the engaging portion 72 of the fastener 70 is engaged with the engaging groove 11a of the connecting portion 11.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a key structure, is applied to mobile terminal, its characterized in that, key structure includes button body, cooperation post and bolster, the cooperation post with button body structure as an organic whole, the bolster cover is located the cooperation post, mobile terminal includes the casing and locates the support of casing, the casing is equipped with according to the keyway, the support seted up with the storage tank of button groove intercommunication, the button body is worn to locate according to the keyway, the cooperation post with the bolster hold in the storage tank.

2. The key structure of claim 1, wherein the size of the mating posts is smaller than the size of the receiving slots.

3. The key structure of claim 1, wherein the outer wall of the mating post defines a recess, and the buffer member is received in the recess.

4. The key structure of claim 1, wherein the key body and the side wall of the key groove have a gap, and the width of the gap is 0.05mm to 0.1 mm.

5. The key structure of claim 1, further comprising a key post and a key circuit board, wherein the key circuit board is provided with a switch, the key post is disposed opposite to the switch, and the key post can trigger the switch under the pushing of the key body.

6. The key structure of claim 5, wherein the bracket includes a receiving portion, the end of the key circuit board is fixed in the receiving portion, the bracket is further provided with a via hole communicated with the receiving portion, and the key post penetrates through the via hole and is partially located in the receiving portion.

7. The key structure according to claim 6, further comprising a sealing ring, wherein the sealing ring is sleeved on the key post and abuts against an inner wall of the through hole.

8. The key structure of claim 1, wherein the key body is provided with a connecting portion, the bracket is provided with an assembling groove, and the key structure further comprises a fixing member, the fixing member is disposed in the assembling groove and clamped with the connecting portion to limit the relative position of the key body and the housing.

9. The key structure according to claim 1, wherein flanges are formed on both sides of the key body, the flanges forming positional interference with the housing.

10. A mobile terminal, characterized in that it comprises a key structure according to any one of claims 1-9.

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