CN211858469U

CN211858469U - Side key waterproof construction and electronic terminal

Info

Publication number: CN211858469U
Application number: CN202020837431.4U
Authority: CN
Inventors: 赵杰
Original assignee: Shanghai Moqin Intelligent Technology Co ltd
Current assignee: Shanghai Moqin Intelligent Technology Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-11-03
Anticipated expiration: 2030-05-19

Abstract

The utility model relates to a side key waterproof technical field specifically discloses a side key waterproof construction and electron terminal, and side key waterproof construction includes: the shell is provided with a key groove, and a through hole is formed in the bottom of the key groove; the soft rubber sleeve comprises an integrally formed frame body, a pressing block and an elastic wall connecting the frame body and the pressing block; the frame body is positioned in the key groove, and the outer side of the frame body is fixedly connected with the inner wall of the key groove in an injection molding mode; the pressing block is positioned in the frame body, and one end of the pressing block extends into the through hole; the keycap is positioned in the frame body and is fixedly connected with the other end of the pressing block. The utility model provides a side key waterproof construction and electron terminal need not the point and glues the waterproof performance that sealed process can possess the higher grade, is favorable to improving the economic benefits of product.

Description

Side key waterproof construction and electronic terminal

Technical Field

The utility model relates to a side key waterproof technology field especially relates to a side key waterproof construction and electron terminal.

Background

In order to facilitate the operation, the side of the general mobile phone is provided with a side key structure, such as a volume key or a power key. Referring to fig. 1, the side key structure generally includes three parts of a housing 1, a key cap 2 and a silicone sleeve 3. The waterproof design of the side keys is important and must prevent water outside the side frame 101 of the housing 1 from easily penetrating into the side frame 101.

The side frame 101 generally includes two hook grooves 102, a dispensing groove 103 is disposed between the two hook grooves 102, and a through hole 104 is disposed at the bottom of the dispensing groove 103. The hook groove 102 is generally provided with other structures (not shown in the figure) to prevent water from penetrating into the side frame 101 through the hook groove 102, which is not the focus of the present invention, and thus the description is omitted. The silica gel sleeve 3 is located in the through hole 104 and is in interference fit with the through hole 104, so that the outer wall of the silica gel sleeve can be tightly attached to the wall of the through hole 104 to prevent water from entering the side frame 101 through the through hole 104. Hook plates are arranged at two ends of the keycap 2 and extend into the hook grooves 102 to realize buckling connection of the keycap 2 and the side frames 101; the middle part of the key cap 2 is provided with a push rod 201 extending into the silica gel sleeve 3, the key cap 2 is pushed inwards, and the push rod presses a corresponding switch elastic sheet 401 on the circuit board through the silica gel sleeve 3, so that a related control function is realized.

However, when the key cap 2 is pressed down, the push rod 201 moves inward, the length of the silicone sleeve 3 is increased, accordingly, the diameter of the silicone sleeve 3 is decreased, the silicone sleeve 3 seals the through hole 104 by means of interference fit, and once the diameter of the silicone sleeve 3 is decreased, the sealing performance is greatly reduced. At present, the glue is generally dispensed at the glue dispensing groove 103, so that water cannot enter the glue dispensing groove 103, and the problem of reduction of sealing performance caused by deformation of the silica gel sleeve 3 is avoided.

Although the sealing problem of the through hole can be solved by arranging the dispensing groove and dispensing, the waterproof grade is lower, and the dispensing sealing step needs to be added, so that the overall economic benefit of the product is lower.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a side key waterproof construction and electron terminal need not the point and glues the waterproof performance that sealed process can possess the higher grade.

To achieve the above object, in one aspect, the present invention provides a side key waterproof structure, including:

a keycap;

the shell is provided with a key groove, and a through hole is formed in the bottom of the key groove;

the soft rubber sleeve comprises an integrally formed frame body, a pressing block and an elastic wall connecting the frame body and the pressing block; the frame body is positioned in the key groove, and the outer side of the frame body is fixedly connected with the inner wall of the key groove in an injection molding mode; the pressing block is positioned in the frame body, and one end of the pressing block extends into the through hole;

the keycap is positioned in the frame body and is fixedly connected with the other end of the pressing block.

Optionally, the housing and the soft rubber sleeve are fixedly connected in a two-color injection molding manner.

Optionally, the housing and the soft rubber sleeve are fixedly connected in an in-mold injection molding manner.

Optionally, a distance between one end of the elastic wall connected with the frame and the keycap is greater than a distance between one end of the elastic wall connected with the pressing block and the keycap.

Optionally, the elastic wall has a straight structure from the end connected with the frame body to the end connected with the pressing block.

Optionally, the elastic wall is an arc-shaped structure that is arched towards the keycap side from the end connected with the frame to the end connected with the pressing block.

Optionally, one end of the pressing block, which is close to the key cap, is provided with a positioning groove, and the key cap is provided with a positioning boss inserted into the positioning groove.

Optionally, the positioning boss and the positioning groove are fixedly connected through dispensing.

On the other hand, the utility model provides an electronic terminal, include any kind of side key waterproof construction of above-mentioned and be located circuit board in the casing, the circuit board correspond to the position department of through hole is equipped with the switch shell fragment.

The beneficial effects of the utility model reside in that: the side key waterproof structure and the electronic terminal are provided, the soft rubber sleeve belongs to an integrally formed structure, and the situation that the joints between the frame body and the elastic wall and between the elastic wall and the pressing block cannot leak is guaranteed; furthermore, the soft rubber sleeve is fixedly connected with the key groove of the shell through an injection molding process, and the connection mode of injection molding is very firm, so that the connection strength between the soft rubber sleeve and the key groove wall is high, no gap exists, leakage is not easy to occur, correspondingly, the waterproof grade of the soft rubber sleeve is also high, and the glue dispensing mode is far beyond the traditional glue dispensing mode. Therefore, the side key waterproof construction that this embodiment provided not only saves the sealed process of point gluing, has reduced production procedure, still possesses the waterproof performance of higher level, has greatly improved the economic benefits of product.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic cross-sectional view of a side key structure along the length direction of a keycap according to the prior art;

FIG. 2 is a schematic cross-sectional view of an electronic terminal along a width direction of a keycap according to an embodiment;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic view of an embodiment in which the elastic wall has an arc-shaped structure.

In the figure:

1. a housing; 101. a side frame; 102. hooking a groove; 103. dispensing a glue groove; 104. a through hole; 105. a keyway;

2. a keycap; 201. a push rod; 202. positioning the boss;

3. a silica gel sleeve;

4. a circuit board; 401. a switch spring plate;

5. a soft rubber sleeve; 501. a frame body; 502. a pressing block; 503. a flexible wall.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that 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. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have the specific orientation, operate in the specific orientation configuration, and thus, should not be construed as limiting the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Referring to fig. 2 to 3, the present embodiment provides an electronic terminal including a side key waterproof structure and a circuit board 4.

The side key waterproof structure comprises a shell 1, a soft rubber sleeve 5 and a keycap 2. The shell 1 is provided with a key groove 105, and a through hole 104 is formed in the bottom of the key groove 105. The soft rubber sleeve 5 comprises a frame body 501, a pressing block 502 and an elastic wall 503 which connects the frame body 501 and the pressing block 502 which are integrally formed; the frame 501 is located in the key slot 105, and the outer side of the frame is fixedly connected with the inner wall of the key slot 105 in an injection molding manner; the pressing block 502 is located in the frame 501, and one end of the pressing block extends into the through hole. The keycap 2 is located in the frame 501 and is fixedly connected with the other end of the pressing block 502. The circuit board 4 is located in the housing 1, and a switch elastic sheet 401 is disposed at a position corresponding to the through hole 104.

It can be understood that, when the key cap 2 is pressed to the left, the key cap 2 will push the pressing block 502 to slide along the through hole 104, and finally press the switch dome 401, triggering the related electrical signal on the circuit board 4.

In the side key waterproof structure provided by the embodiment, the soft rubber sleeve 5 is of an integrally formed structure, so that the connection positions between the frame body 501 and the elastic wall 503 and between the elastic wall 503 and the pressing block 502 are ensured not to leak; furthermore, the soft rubber sleeve 5 is fixedly connected with the key groove 105 of the shell 1 through an injection molding process, and the connection mode of injection molding is very firm, so that the connection strength between the soft rubber sleeve 5 and the groove wall of the key groove 105 is high, no gap exists, leakage is not easy to occur, correspondingly, the waterproof grade is high, and the glue dispensing mode is far beyond the traditional glue dispensing mode. Therefore, the side key waterproof construction that this embodiment provided not only saves the sealed process of point gluing, has reduced the assembly procedure, still possesses the waterproof performance of higher level, has greatly improved the economic benefits of product.

Optionally, the housing 1 and the soft rubber sleeve 5 are fixedly connected in a two-color injection molding manner. Generally, the housing 1 is made of hard plastic, and the soft rubber cover 5 is mostly made of soft silicone. The fixing mode of the double-color injection molding is that hard plastic and soft silica gel are simultaneously injected into a mold cavity, and after cooling and molding, the soft rubber sleeve 5 is reliably fixed with the shell 1. The fixing mode has the advantages that the production efficiency is high, the production and the assembly of the shell 1 and the soft rubber sleeve 5 can be completed by one-time injection molding, and the number of working procedures is small. Specifically, the two-color injection molding belongs to the existing process, and details are not described in this embodiment.

Or, the shell 1 and the soft rubber sleeve 5 are fixedly connected in an in-mold injection molding mode. For example, the soft rubber sleeve 5 is produced first, then the soft rubber sleeve 5 is placed into a mold for producing the shell 1, hard plastic is poured, and the shell 1 and the soft rubber sleeve 5 which are fixedly connected in an intramembrane injection molding mode can be obtained after cooling and forming. The fixed connection mode has the advantages that the production and assembly of the shell 1 and the soft rubber sleeve 5 can be realized through twice injection molding, the technical difficulty is low, and the equipment cost is low.

In this embodiment, the distance between the end of the elastic wall 503 connected to the frame 501 and the key cap 2 is greater than the distance between the end of the elastic wall 503 connected to the pressing block 502 and the key cap 2, that is, the elastic wall 503 is inclined toward the key cap 2. Specifically, when the user presses the key cap 2 with a finger, the elastic wall 503 is squeezed, the structural design of the inclined elastic wall 503 enables the user to feel a large reaction force from the elastic wall 503, and once the user releases the hand, the elastic wall 503 is restored to its original shape, so that the key cap 2 is quickly restored, which provides a good pressing feeling for the user.

Alternatively, referring to fig. 3, the elastic wall 503 has a straight structure from the end connected to the frame 501 to the end connected to the pressing block 502, or, referring to fig. 4, the elastic wall 503 has an arc-shaped structure that is arched toward the key cap 2 from the end connected to the frame 501 to the end connected to the pressing block 502. Specifically, the elastic wall 503 with a straight structure has better deformation recovery capability, better pressing hand feeling, uniform stress on the elastic wall 503 with an arc structure and longer service life.

In this embodiment, a positioning groove is formed at one end of the pressing block 502 close to the key cap 2, and the key cap 2 is provided with a positioning boss 202 inserted into the positioning groove. Specifically, the positioning groove may be used to realize alignment between the key cap 2 and the pressing block, and preferably, in order to further improve connection reliability between the key cap 2 and the pressing block, glue may be dispensed between the positioning boss 202 and the positioning groove.

Optionally, the keycap 2 is fixedly connected with the pressing block 502 in a dispensing manner, so that a hook groove and a hook plate are not required to be arranged, the structure is more simplified, and the economic benefit is higher.

It should be noted that the side key waterproof structure provided in this embodiment may be used for an electronic terminal, but may also be used for other plastic products with waterproof requirements, and further, the electronic terminal in this embodiment may be a POS machine, a tablet computer, a mobile phone, a toy with keys, a notebook, or the like, which is not limited in this embodiment.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A side key waterproof structure, characterized by comprising:

2. The waterproof side key structure according to claim 1, wherein the housing is fixedly connected to the soft rubber sleeve by two-color injection molding.

3. The waterproof side key structure according to claim 1, wherein the housing is fixedly connected to the soft rubber sleeve by in-mold injection molding.

4. The side key waterproof structure according to claim 1, wherein a distance dimension from an end of the elastic wall connected to the frame to the key cap is larger than a distance dimension from an end of the elastic wall connected to the pressing block to the key cap.

5. The side key waterproof structure according to claim 4, wherein the elastic wall has a straight structure from an end connected to the frame body to an end connected to the pressing block.

6. The side key waterproof structure according to claim 4, wherein the elastic wall has an arc-like structure that is arched toward the keycap side from an end connected to the frame to an end connected to the pressing block.

7. The waterproof side key structure of claim 1, wherein a positioning groove is formed at one end of the pressing block close to the key cap, and the key cap is provided with a positioning boss inserted into the positioning groove.

8. The waterproof structure of claim 7, wherein the positioning boss is fixedly connected to the positioning groove.

9. An electronic terminal, characterized in that, includes the side key waterproof structure of any claim 1-8 and a circuit board located in the housing, the circuit board is provided with a switch shrapnel at a position corresponding to the through hole.