CN211604993U

CN211604993U - Key structure

Info

Publication number: CN211604993U
Application number: CN201922428357.0U
Authority: CN
Inventors: 邓良有; 李刚飞; 黄俊峰; 黄俊铭; 梁昌万
Original assignee: Hi Target Surveying Instrument Co ltd
Current assignee: Hi Target Surveying Instrument Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-29
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a key structure, which comprises a shell, a key part, an elastic part and a connecting part; the shell is provided with a mounting hole, and the hole wall of the mounting hole is provided with an embedded groove; the key part, the elastic part and the connecting part are sequentially and fixedly connected and are all arranged in the mounting hole; the key part can move relative to the mounting hole; the outer wall of the key part is recessed towards the direction far away from the hole wall of the mounting hole, so that an accommodating space is formed between the outer wall of the key part and the hole wall of the mounting hole at intervals; the elastic part is positioned in the accommodating space and can generate elastic deformation in the accommodating space under the linkage of the key part; the connecting part is provided with a sealing bulge which extends around the circumference of the key part and is in a closed ring shape; the sealing bulge is embedded with the embedding groove. The utility model discloses on the basis of guaranteeing that button portion feels, need not to set up the space of holding elasticity portion in addition to avoid causing the complication of the mould structure of production shell.

Description

Key structure

Technical Field

The utility model relates to a button portion field especially relates to a button structure.

Background

With the development of miniaturization and three-prevention requirements of products in the international electronic communication industry, the three-prevention requirements of the miniaturized products are more and more important, and one of the most key cores of the miniaturized three-prevention products is to design a waterproof and dustproof key structure, wherein the hand feeling of a key part influences the user experience. At present in fields such as GNSS survey and drawing, outdoor handheld machine, the elastic component of doing in sufficient space through silica gel guarantees that button portion feels, wherein, elastic component and button portion butt.

Above-mentioned waterproof dustproof button structure of conventionality needs to design a space in addition on the shell and hold the elasticity portion, but is narrow and small in the product space, especially under the condition that the product inclines out button portion, need the more complicated of product shell structural design just can vacate the space and set up the elasticity portion, promptly, need to do corresponding change in order to form the space of holding elasticity portion when producing the shell to the mould of production shell, increase the complexity of mould structure for the cost and the mould maintenance cost of mould can greatly increased.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a key structure, which does not need to additionally arrange the space of an accommodating elastic part on the basis of ensuring the hand feeling of a key part so as to avoid the complication of the mold structure for producing a shell.

The purpose of the utility model is realized by adopting the following technical scheme:

a key structure comprises a shell, a key part, an elastic part and a connecting part; the shell is provided with a mounting hole, and the hole wall of the mounting hole is provided with an embedded groove; the key part, the elastic part and the connecting part are sequentially and fixedly connected and are all arranged in the mounting hole; the key part can move relative to the mounting hole; the outer wall of the key part is recessed towards the direction far away from the hole wall of the mounting hole, so that an accommodating space is formed between the outer wall of the key part and the hole wall of the mounting hole at intervals; the elastic part is positioned in the accommodating space and can be elastically deformed in the accommodating space under the linkage of the key part; the connecting part is provided with a sealing bulge which extends around the circumference of the key part and is in a closed ring shape; the sealing bulge is embedded with the embedding groove.

Further, the elastic portion is gradually inclined from one end thereof close to the key portion to the other end thereof in a direction away from the key portion.

Further, the elastic part extends circumferentially around the key part and is in a closed ring shape.

Further, the connecting part extends around the circumference of the key part and is in a closed ring shape.

Further, the elastic part is made of a silica gel material.

Further, the key portion is movable relative to the mounting hole in the axial direction of the mounting hole.

Further, the mounting hole comprises a first area and a second area which are distributed up and down and are communicated with each other; the diameter of the first region is smaller than the diameter of the second region; the key part and the elastic part are both arranged in the first area; the connecting part is arranged in the second area; the embedded groove is formed in the downward hole wall of the second area; the sealing protrusion protrudes upward.

Furthermore, the key structure also comprises a PCB and a pressing plate; the PCB is abutted against the lower part of the connecting part and is provided with an equipment button; the key part is positioned right above the equipment button and can be pressed against the equipment button during movement; the pressing plate is abutted against the PCB and enables the PCB to be fixed on the shell.

Furthermore, the key part comprises a first section and a second section which are distributed up and down and fixedly connected; the first section is located above the elastic portion, and the second section is located within the elastic portion.

Furthermore, the connecting part is made of a silica gel material; the connecting portion is further provided with an annular accommodating groove which is opposite to the sealing bulge and located below the sealing bulge, and the annular accommodating groove is used for accommodating the sealing bulge when the sealing bulge is extruded by external force to move downwards.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a make the outer wall indent of button portion and make the interval form accommodation space between button portion and the mounting hole, and this accommodation space can hold elasticity portion and supply elasticity portion to take place deformation, so, on the basis that button portion was guaranteed to feel at the elasticity portion, need not to set up the space of holding elasticity portion in addition to avoid causing the complication of the mould structure of production shell, practice thrift the cost.

Drawings

FIG. 1 is a schematic structural view of the key portion, the elastic portion and the connecting portion of the present invention;

fig. 2 is a schematic structural diagram of the key structure of the present invention.

In the figure: 10. a housing; 20. a key section; 21. a first stage; 22. a second stage; 23. an outer wall of the key portion; 30. an elastic portion; 40. a connecting portion; 50. an accommodating space; 60. sealing the protrusion; 70. a PCB board; 80. pressing a plate; 90. an equipment button; 100. annular holding tank.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

A key structure as shown in fig. 1-2, comprising a housing 10, a key part 20, an elastic part 30 and a connecting part 40; the shell 10 is provided with a mounting hole, and the hole wall of the mounting hole is provided with an embedded groove; it can be understood that the mounting hole communicates with the outside and the inside of the housing 10, and the key portion 20 protrudes out of the mounting hole and exposes to the outside when not receiving an external pressing force, so as to be pressed by a user; the key part 20, the elastic part 30 and the connecting part 40 are sequentially and fixedly connected and are all arranged in the mounting hole; as described above, when the key section 20 is pressed, the key section 20 deforms the elastic section 30, and when the pressing of the pressing is released, the elastic force of the elastic section 30 pushes the key section 20 back to reset the key section 20, thereby securing the feeling of the key section 20; the key part 20 can move relative to the mounting hole; the outer wall 23 of the key part is recessed towards the direction far away from the hole wall of the mounting hole, so that an accommodating space 50 is formed between the outer wall 23 of the key part and the hole wall of the mounting hole at intervals; the elastic part 30 is located in the accommodating space 50 and can be elastically deformed in the accommodating space 50 under the linkage of the key part 20; therefore, the outer wall 23 of the key part is recessed inwards to form the accommodating space 50 with the inner wall of the mounting hole at intervals, the accommodating space 50 can accommodate the elastic part 30, and when the key part 20 is pressed, the key part 20 is linked with the elastic part 30 to deform or the elastic part 30 can perform the restoration movement under the action of the elastic stress of the elastic part per se in the accommodating space 50, so that the space for accommodating the elastic part 30 is not required to be additionally designed, the complication of the mold structure for producing the shell 10 is avoided, and the mold production cost is saved; furthermore, the connecting portion 40 is provided with a sealing protrusion 60 which extends circumferentially around the key portion 20 and is in a closed ring shape; the sealing protrusion 60 is fitted into the fitting groove such that the exterior is blocked from the interior of the housing 10 by the sealing protrusion 60, i.e., the exterior is prevented from being communicated with the interior of the housing 10 through the mounting hole, thereby achieving waterproof and dustproof effects.

Specifically, the elastic portion 30 is gradually inclined from one end thereof close to the key portion 20 to the other end thereof in a direction away from the key portion 20.

Preferably, the elastic part 30 extends circumferentially around the key part 20 and has a closed ring shape, i.e., the end-to-end of the elastic part 30 is closed, so that the elastic stress of the elastic part 30 is uniformly applied to the key part 20, thereby further improving the feeling of the user pressing the key part 20.

The elastic part 30 is made of silica gel material, of course, the elastic part 30 can also be elastic sheet; it should be noted that the key portion 20, the elastic portion 30 and the connecting portion 40 may be integrally formed and made of silicone.

Further, the connecting portion 40 extends circumferentially around the key portion 20 and is in a closed ring shape, so that the sealing protrusion 60 is completely supported, and the stability of inserting the sealing protrusion 60 into the insertion groove is ensured; here, in order to ensure the isolation effect, the outer wall of the sealing protrusion 60 is tightly attached to the insertion groove, and further, the sealing protrusion 60 may be made of a silicone material, so that it may be pressed into the insertion groove by the expansion and contraction of the sealing material and only attached to the groove wall of the insertion groove when it is restored.

The key portion 20 is movable relative to the mounting hole in the axial direction of the mounting hole.

Specifically, the mounting hole comprises a first area and a second area which are distributed up and down and are communicated with each other; the diameter of the first zone is smaller than the diameter of the second zone; the key part 20 and the elastic part 30 are both disposed in the first region; the connection portion 40 is disposed in the second region; the embedding groove is formed in the downward hole wall of the second area; the sealing protrusion 60 protrudes upward, and the sealing protrusion 60 surrounds the opening of the first region communicating with the second region, thereby enhancing the sealing effect.

The key structure further comprises a PCB board 70 and a pressing board 80; the PCB 70 is abutted against the lower part of the connecting part 40 and is provided with an equipment button 90; here, the device button 90 refers to a button of an external product; the key part 20 is positioned right above the device button 90 and can press the device button 90 when moving; the pressing plate 80 abuts against the PCB 70 and fixes the PCB 70 to the housing 10, such that the connecting portion 40 is fixed to the housing 10 by abutting against the connecting portion 40 through the PCB 70.

Specifically, the key portion 20 includes a first section 21 and a second section 22 which are distributed and fixedly connected up and down; the first section 21 is located above the elastic portion 30, and the second section 22 is located inside the elastic portion 30.

Further, the connecting portion 40 is made of a silica gel material, so that the connecting portion 40 has certain flexibility and can deform; the connecting portion 40 is further provided with an annular accommodating groove 100 which is opposite to the sealing protrusion 60 and is positioned below the sealing protrusion 60, and the annular accommodating groove 100 is used for accommodating the sealing protrusion 60 when the sealing protrusion 60 is extruded by external force to move downwards, so that in the assembling process, if the height of the sealing protrusion 60 is greater than the depth of the embedded groove and is extruded by the embedded groove, the sealing protrusion 60 moves downwards to be linked with the deformation of the connecting portion 40, so that the sealing protrusion 60 sinks into the annular accommodating groove 100, and the assembling is ensured to be in place; furthermore, the connection part 40 deforms to generate a restored compression amount, so that the sealing protrusion 60 is pushed upwards to press the embedded groove, the requirements on the machining precision and the assembling precision of the sealing protrusion 60 and the embedded groove are reduced, the waterproof and dustproof performance is improved, the consistency and the stability are improved, and the cost is reduced.

In the above description, the "annular shape" of the annular accommodating groove 100 refers to a structure in which the extending locus of the annular accommodating groove 100 is closed end to end.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A key structure, characterized by: comprises a shell, a key part, an elastic part and a connecting part; the shell is provided with a mounting hole, and the hole wall of the mounting hole is provided with an embedded groove; the key part, the elastic part and the connecting part are sequentially and fixedly connected and are all arranged in the mounting hole; the key part can move relative to the mounting hole; the outer wall of the key part is recessed towards the direction far away from the hole wall of the mounting hole, so that an accommodating space is formed between the outer wall of the key part and the hole wall of the mounting hole at intervals; the elastic part is positioned in the accommodating space and can be elastically deformed in the accommodating space under the linkage of the key part; the connecting part is provided with a sealing bulge which extends around the circumference of the key part and is in a closed ring shape; the sealing bulge is embedded with the embedding groove.

2. The key structure of claim 1, wherein: the elastic part is gradually inclined from one end close to the key part to the other end far away from the key part.

3. The key structure of claim 2, wherein: the elastic part extends around the circumferential direction of the key part and is in a closed ring shape.

4. A key structure according to claim 3, wherein: the connecting part extends around the circumference of the key part and is in a closed ring shape.

5. The key structure of claim 1, wherein: the elastic part is made of a silica gel material.

6. The key structure of claim 1, wherein: the key part can move along the axial direction of the mounting hole relative to the mounting hole.

7. The key structure of claim 1, wherein: the mounting hole comprises a first area and a second area which are distributed up and down and are communicated with each other; the diameter of the first region is smaller than the diameter of the second region; the key part and the elastic part are both arranged in the first area; the connecting part is arranged in the second area; the embedded groove is formed in the downward hole wall of the second area; the sealing protrusion protrudes upward.

8. The key structure of claim 7, wherein: the key structure also comprises a PCB and a pressing plate; the PCB is abutted against the lower part of the connecting part and is provided with an equipment button; the key part is positioned right above the equipment button and can be pressed against the equipment button during movement; the pressing plate is abutted against the PCB and enables the PCB to be fixed on the shell.

9. The key structure of claim 8, wherein: the key part comprises a first section and a second section which are distributed up and down and fixedly connected; the first section is located above the elastic portion, and the second section is located within the elastic portion.

10. The key structure of claim 1, wherein: the connecting part is made of a silica gel material; the connecting portion is further provided with an annular accommodating groove which is opposite to the sealing bulge and located below the sealing bulge, and the annular accommodating groove is used for accommodating the sealing bulge when the sealing bulge is extruded by external force to move downwards.