CN217405295U - Monitor and button structure thereof - Google Patents

Abstract

The utility model discloses a monitor and a key structure thereof, wherein the key structure comprises a shell, a circuit board and a key component arranged between the shell and the circuit board, and the shell is provided with a matching cavity; the key assembly has: the key structure is movably assembled in the matching cavity, the waterproof and dustproof structure is in interference fit with the shell, and the touch key is fixedly assembled on the circuit board; the touch key is touched by pressing the key structure. The key structure can enable the key and the shell to be tightly combined, and plays a role in preventing water and dust from entering the circuit board.

Description

Monitor and button structure thereof

Technical Field

The utility model relates to a waterproof technical field of button, in particular to button structure. Also relates to a monitor.

Background

With the concern of people on their health, the patient monitor is required to pay more and more attention to the adaptability of the patient monitor to the environment after meeting the basic parameter measurement function, the waterproof and dustproof capacity of the patient monitor becomes a difficult point restricting the further development of electronic equipment, and the quality of waterproof performance is directly related to the service life and market occupancy rate of the product.

The most common key waterproof design at present is as follows: 1. key pad pasting: the scheme is simple and easy to implement, but the used adhesive film has the limitation of service life and can influence the hand feeling of a user to a certain extent; 2. silica gel key pressing: namely, the silica gel key is used between the touch key and the shell, and the silica gel key is extruded by the circuit board and the shell to eliminate a gap at the shell to achieve the waterproof and dustproof effects, so that the scheme is attractive in appearance, good in hand feeling and high in implementation cost; 3. non-solid key: the scheme can keep the integrity of the shell to the maximum extent, but the realization cost is higher.

Therefore, how to provide a key structure that solves the above technical problems is a technical problem that needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a button structure can make and combine closely between button and the shell, plays the effect that prevents water and dust entering circuit board. Another object of the present invention is to provide a monitor.

In order to achieve the above object, the present invention provides a key structure, which includes a housing, a circuit board and a key assembly installed therebetween, wherein the housing is provided with a matching cavity; the key assembly has: the key structure is movably assembled in the matching cavity, the waterproof and dustproof structure is in interference fit with the shell, and the touch key is fixedly assembled on the circuit board; the touch key is touched by pressing the key structure.

Preferably, the key assembly further comprises an elastic structural member, and the elastic structural member is connected with the key structural member; when the key structural part is loosened, the elastic structural part pushes the key structural part to reset.

Preferably, the key structure includes a key structure body, the upper end of the key structure body is provided with a pressing portion for pressing, and the lower end of the key structure body is provided with a thimble portion for activating the activation key.

Preferably, the peripheral side of the key structure main body is further provided with at least one limiting part, the limiting part protrudes outwards, and the limiting part is used for limiting under the action of the shell when the key structure moves.

Preferably, the upper side of the key structure main body is provided with a first mounting plane, the lower side of the matching cavity is provided with a third mounting plane, and the waterproof and dustproof structural member is assembled between the first mounting plane and the third mounting plane.

Preferably, the lower side of the key structure body is provided with a second mounting plane, the touch key comprises a touch key body and a key cap arranged on the upper side of the touch key body, the touch key body is provided with a fourth mounting plane located on the peripheral side of the key cap, and the elastic structural member is assembled between the second mounting plane and the fourth mounting plane.

Preferably, the thimble portion is composed of criss-cross ribs and longitudinal ribs, and the cross section is gradually reduced from the upper end to the lower end.

Preferably, waterproof dustproof structure spare is the silica gel circle.

Preferably, the elastic structure is a spring.

The utility model also provides a monitor, including above-mentioned button structure.

Compared with the prior art, the key structure provided by the utility model comprises a shell, a circuit board and a key assembly arranged between the shell and the circuit board, wherein the shell is provided with a matching cavity; the key assembly has: the key structure is movably assembled in the matching cavity, the waterproof and dustproof structure is in interference fit between the key structure and the shell, and the touch key is fixedly assembled on the circuit board; the touch key is triggered by pressing the key structure.

The key structure can enable the key and the shell to be tightly combined, and plays a role in preventing water and dust from entering the circuit board; the realization cost is lower, the operation hand feeling of a user is comfortable, the design protection level can reach IP44 to prevent solids larger than 1mm from entering, and liquid is splashed to the shell 1 from any direction and has no harm and influence on equipment.

Drawings

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

Fig. 1 is a schematic structural diagram of a key structure provided in an embodiment of the present invention;

fig. 2 is an exploded schematic view of a key structure according to an embodiment of the present invention;

fig. 3 is an assembly schematic view of a key structure according to an embodiment of the present invention;

fig. 4 is a first schematic structural diagram of a housing according to an embodiment of the present invention;

fig. 5 is a second schematic structural diagram of the housing according to the embodiment of the present invention;

fig. 6 is a first schematic structural diagram of a key structure according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a key structure according to an embodiment of the present invention;

fig. 8 is a first schematic structural view of a touch key according to an embodiment of the present invention;

fig. 9 is a second schematic structural view of a touch key according to an embodiment of the present invention;

FIG. 10 is an enlarged partial schematic view of FIG. 5;

fig. 11 is a partially enlarged view of fig. 1.

Wherein:

the key structure comprises a shell 1, a waterproof and dustproof structural part 2, a key structural part 3, an elastic structural part 4, a circuit board 5, a touch key 6, a fastener 7, a matching cavity 10, a third mounting plane 101, a key structure main body 30, a pressing part 31, a thimble part 32, a limiting part 33, a first mounting plane 301, a second mounting plane 302, a touch key main body 60, a key cap 61 and a fourth mounting plane 601.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments 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 work belong to the protection scope of the present invention.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 11, in which fig. 1 is a schematic structural diagram of a key structure provided in an embodiment of the present invention, fig. 2 is an exploded schematic view of a key structure provided in an embodiment of the present invention, fig. 3 is an assembled schematic view of the key structure provided in the embodiment of the present invention, fig. 4 is a first structural diagram of a housing provided in an embodiment of the present invention, fig. 5 is a second structural diagram of a housing provided in an embodiment of the present invention, fig. 6 is a first schematic structural diagram of a key structure provided in an embodiment of the present invention, fig. 7 is a second schematic structural diagram of a key structure provided in an embodiment of the present invention, fig. 8 is a first schematic structural view of a touch button provided in an embodiment of the present invention, fig. 9 is a second schematic structural view of a touch button provided in an embodiment of the present invention, fig. 10 is a partially enlarged view of fig. 5, and fig. 11 is a partially enlarged view of fig. 1.

In a first specific embodiment, the key structure provided by the present invention includes a housing 1, a circuit board 5 and a key assembly installed therebetween, the key assembly is referred to as a key for short, the housing 1 is provided with a matching cavity 10; the key has: the key structure 3 is movably assembled in the matching cavity 10, the waterproof and dustproof structure 2 is in interference fit between the key structure 3 and the shell 1, and the touch key 6 is fixedly assembled on the circuit board 5; the activation key 6 is activated by pressing the key structure 3.

In the present embodiment, the housing 1 and the circuit board 5 are assembled and fixed by means of a fastening member 7, and the fastening member 7 is preferably a screw.

The key assembly mainly comprises a waterproof and dustproof structural part 2, a key structural part 3 and a touch key 6, and is arranged between the shell 1 and the circuit board 5.

In the installation of the key assembly, the key structure 3 is assembled in the matching cavity 10, the matching cavity 10 is equivalent to a channel for the movement of the key structure 3, and the movement of the key structure 3 is represented by pressing and rebounding in the up-down direction; the touch key 6 is assembled on the circuit board 5, the touch key 6 is fixed and electrically connected with the circuit board 5, and the touch key 6 plays a role in switch control when being triggered; waterproof dustproof structure 2 is located between button structure 3 and shell 1, and interference fit, in close contact between button structure 3, waterproof dustproof structure 2, the shell 1 reaches waterproof purpose.

Reference may be made to the following table:

the embodiment provides a key structure for a patient monitor, has the characteristic of water resistance, and reasonably utilizes the installation relation among all parts, thereby ensuring the service life and the operation hand feeling of the equipment and also considering the integral type of the appearance of the equipment; the keys and the shell can be tightly combined, and the effect of preventing water and dust from entering the circuit board is achieved; the realization cost is lower, the operation hand feeling of a user is comfortable, the design protection level can reach IP44 to prevent solids larger than 1mm from entering, and liquid is splashed to the shell 1 from any direction and has no harm and influence on equipment.

Furthermore, the key assembly is also provided with an elastic structural member 4, and the elastic structural member 4 is connected with the key structural member 3; when the key structure 3 is released, the elastic structure 4 pushes the key structure 3 to reset.

In this embodiment, the elastic structural member 4 has various implementation forms, and functions to provide the function of returning and returning after the key structural member 3 is pressed, and also provides a certain resistance in the pressing process, thereby effectively improving the hand feeling of the pressing operation.

It should be noted that when the key is designed to be waterproof, the waterproof performance is ensured and the operation hand feeling is also considered, and these characteristics are realized by the reasonable matching of the force among the circuit board 5, the touch key 6, the elastic structural member 4, the key structural member 3, the waterproof and dustproof structural member 2 and the housing 1. The influence of the mechanical characteristics of the elastic structural member 4 and the waterproof and dustproof structural member 2 on the structural waterproof performance is the largest, and the influence of the mechanical characteristics of the elastic structural member 4 and the touch key 6 on the operation hand feeling of a user is the largest.

In a specific embodiment, the key structure 3 includes a key structure body 30, a pressing portion 31 is disposed at an upper end of the key structure body 30 for pressing, and a thimble portion 32 is disposed at a lower end of the key structure body 30 for activating the touch key 6.

In the present embodiment, the key structure body 30 corresponds to a bearing body of the key structure 3; the pressing part 31 is round and plays a role of pressing; the thimble portion 32 is rod-shaped and functions to actuate the touch key 6 by moving together with the movement of the key structure body 30.

It should be noted that, there are various design manners of the pressing portion 31 and the thimble portion 32, for example, the pressing portion 31 and the thimble portion 32 may be inherent parts on the key structure body 30 in the integral design, and the pressing portion 31 and the thimble portion 32 may be assembling parts on the key structure body 30 in the separate design, which also belongs to the description scope of the present embodiment.

Besides, at least one limiting portion 33 is disposed on the periphery of the key structure body 30, the limiting portion 33 protrudes outward, and the limiting portion 33 is used for being limited by the housing 1 when the key structure 3 moves.

In this embodiment, the number of the limiting parts 33 may be a pair, the pair of limiting parts 33 are symmetrically distributed on the periphery of the key structure main body 30, when the key structure main body 30 is pressed to the limiting position, the protruding limiting part 33 is blocked by the housing 1, and at this time, the touch key 6 is already touched, so as to prevent the key structure 3 from being pressed further.

In addition, the key structure body 30 has a first installation plane 301 on the upper side, a third installation plane 101 on the lower side of the fitting cavity 10, and the waterproof and dustproof structural member 2 is assembled between the first installation plane 301 and the third installation plane 101.

In the present embodiment, the key structure 3 and the housing 1 have a plane on which the waterproof and dustproof structure 2 is mounted, that is, the first mounting plane 301 and the third mounting plane 101 described above.

The first mounting plane 301 is implemented in various forms, and is disposed on the thimble portion 32, which has the advantage of being able to flexibly adapt to the elastic structural member 4 with different sizes, including length, diameter, etc.

In addition, the lower side of the key structure main body 30 has a second mounting plane 302, the touch key 6 includes a touch key main body 60 and a key cap 61 disposed on the upper side of the touch key main body 60, the touch key main body 60 has a fourth mounting plane 601 located on the peripheral side of the key cap 61, and the elastic structure 4 is assembled between the second mounting plane 302 and the fourth mounting plane 601.

In the present embodiment, the elastic structural member 4 is installed between the touch key 6 and the key structural member 3 through the second installation plane 302 and the fourth installation plane 601, similarly to the plane on which the waterproof and dustproof structural member 2 is installed.

In one specific embodiment, the thimble portion 32 is formed of criss-cross ribs and longitudinal ribs, and the cross section gradually decreases from the upper end to the lower end.

The elastic structure 4 is illustratively a spring.

In this embodiment, the spring needs to be sleeved on the thimble portion 32 of the key structure 3 and the key cap 61 of the touch key 6, and compressed between the fourth installation plane 601 of the touch key 6 and the second installation plane 302 of the key structure 3.

Illustratively, the waterproof and dustproof structural member 2 is a silicone ring.

Wherein, the shell 1 and the key structure member 3 are made of ABS; waterproof dustproof structure 2 adopts the waterproof material of compressible deformation, preferably the silica gel material.

The utility model also provides a monitor, including above-mentioned button structure, realize the two-way butt joint design in space, waterproof dustproof design, should have all beneficial effects of above-mentioned button structure, here no longer give unnecessary detail.

The screw, the circuit board 5, the touch key 6, the key structural member 3, the spring, the waterproof and dustproof structural member 2 and the shell 1 are assembled, wherein the touch key 6 is fixed on the circuit board 5, the spring or other elastic structural member 4 is arranged between the touch key 6 and the key structural member 3, and the waterproof and dustproof structural member 2 is arranged between the key structural member 3 and the shell 1. Waterproof dustproof structure 2 pressurized deformation after the assembly, interference fit between button structure 3, waterproof dustproof structure 2, the shell 1, in close contact with has both guaranteed waterproof dustproof performance, has still compromise the operation simultaneously and has felt, and button action force > compression spring's reaction force > waterproof dustproof structure 2's hardness.

Specifically, the state is divided into a key-up state and a key-down state.

The key-up state: press from both sides spring or other elastic construction spare 4 that touch between button 6 and the button structure spare 3 and exert one to button structure spare 3 with the power of button operation opposite direction, and then the extrusion presss from both sides waterproof dustproof structure spare 2 between button structure spare 3 and shell 1 and takes place deformation for fully contacting between button structure spare 3, waterproof dustproof structure spare 2, the shell 1, form interference fit, reach waterproof dustproof effect.

The key pressing state: a user applies a force along the key operation direction to the key structure 3, so that the spring or other elastic structure 4 is compressed until the thimble part 32 of the key structure 3 touches the key cap 61 of the key 6 to contact and complete key triggering; the thimble part 32 of the key structure 3 and the key cap 61 of the touch key 6 are designed to be as close as possible, so that the key cap 61 of the touch key 6 is not pressed by the thimble part 32 of the key structure 3 in the key lifting state, and thus, in the key pressing state, the waterproof and dustproof structure 2 can still keep close contact with the key structure 3 and the shell 1 after being restored to a partial compression state from an initial maximum compression state, and the key response felt by a user can be the fastest.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

It is right above that the utility model provides a monitor and button structure thereof have carried out the detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. A key structure is characterized by comprising a shell (1), a circuit board (5) and a key assembly arranged between the shell and the circuit board, wherein the shell (1) is provided with a matching cavity (10); the key assembly has: the key structure (3) is movably assembled in the matching cavity (10), the waterproof and dustproof structure (2) is in interference fit between the key structure (3) and the shell (1), and the touch key (6) is fixedly assembled on the circuit board (5); the activation key (6) is activated by pressing the key structure (3).

2. The key structure according to claim 1, characterized in that the key assembly further has an elastic structural member (4), the elastic structural member (4) being connected to the key structural member (3); when the key structural part (3) is loosened, the elastic structural part (4) pushes the key structural part (3) to reset.

3. The key structure according to claim 2, wherein the key structure (3) comprises a key structure body (30), the upper end of the key structure body (30) is provided with a pressing portion (31) for pressing, and the lower end of the key structure body (30) is provided with a thimble portion (32) for activating the activation key (6).

4. A key structure according to claim 3, wherein the key structure main body (30) is further provided with at least one limiting portion (33) on the periphery side, the limiting portion (33) protrudes outwards, and the limiting portion (33) is used for being limited by the housing (1) when the key structure (3) moves.

5. A key structure according to claim 3, characterized in that the upper side of said key structure body (30) has a first mounting plane (301) and the lower side of said mating cavity (10) has a third mounting plane (101), said waterproof and dustproof structure (2) being fitted between said first mounting plane (301) and said third mounting plane (101).

6. A key structure according to claim 3, wherein the lower side of the key structure body (30) has a second mounting plane (302), the touch key (6) comprises a touch key body (60) and a key cap (61) disposed on the upper side of the touch key body (60), the touch key body (60) has a fourth mounting plane (601) located on the peripheral side of the key cap (61), and the elastic structure (4) is assembled between the second mounting plane (302) and the fourth mounting plane (601).

7. A key structure according to claim 3, characterised in that said thimble portion (32) is composed of criss-crossing transverse and longitudinal ribs and has a cross section which gradually decreases from the upper end to the lower end.

8. The key structure according to any one of claims 1 to 7, characterized in that the waterproof and dustproof structure (2) is a silicone ring.

9. Key structure according to any of claims 2 to 7 characterized in that said elastic structure (4) is a spring.

10. A monitor comprising a key structure according to any one of claims 1 to 9.

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