CN219203007U

CN219203007U - Soft light key structure

Info

Publication number: CN219203007U
Application number: CN202320700117.5U
Authority: CN
Inventors: 张欢; 焦杰
Original assignee: Durui Industrial Components Beijing Co ltd
Current assignee: Durui Industrial Components Beijing Co ltd
Priority date: 2023-04-01
Filing date: 2023-04-01
Publication date: 2023-06-16
Anticipated expiration: 2033-04-01

Abstract

The application relates to the field of control panels of medical equipment, in particular to a soft light key structure, which comprises a PCB (printed circuit board), a shell, an elastic key and a key cap, wherein a light emitting part is arranged on the PCB and used for emitting light; the shell is connected with the end face of the PCB, on which the LED lamp beads are arranged, and the part, facing the luminous piece, of the shell is provided with a mounting groove; the elastic key is positioned in the mounting groove, the wall of the mounting groove is connected with the PCB, the upper end part of the elastic key is of a closed structure and made of transparent silica gel, and the upper end part of the elastic key is opposite to the luminous piece; the button cap is arranged in the mounting groove, and the button cap is sleeved at the upper end of the elastic button, and a light scattering piece is arranged between the button cap and the elastic button and used for reducing the direct light transmittance of light rays. The LED lamp bead is avoided as much as possible to enable medical staff to have the short-term fuzzy visual field, so that the medical hidden trouble is reduced.

Description

Soft light key structure

Technical Field

The application relates to the field of medical equipment control panels, in particular to a soft light key structure.

Background

The key structure is widely used in various fields, and is mainly used as a switch of various electric devices. In the field of medical equipment, the key structure needs to have striking characteristics so as to be convenient for medical staff to control the state of the medical equipment.

At present, in the prior art, an LED lamp bead is mainly arranged on a PCB at the bottom of a key of a control panel of medical equipment, when an LED is lightened, the bottom of a key cap is irradiated, and lamplight is transmitted out from a transparent area of an icon of the key cap, so that the icon on the key is lightened, and the display purpose is achieved.

However, in the above-mentioned technology, when the LED lamp beads are lighted, the light emitted by the LED lamp beads can direct the eyes, so that the medical staff has a short-term blurred vision; and the brightness of the area opposite to the LED lamp beads on the icon of the transparent area is higher than that of other positions, so that the overall appearance is poor.

For the related art in the above, there are: the light of the LED lamp beads is directly emitted, so that the medical staff has short-term blurred vision, and the defect of medical hidden danger is increased.

Disclosure of Invention

In order to avoid the condition that the LED lamp beads cause short-term blurred vision to occur to the greatest extent, thereby reduce medical hidden danger, the application provides a soft light key structure.

The application provides a soft light key structure adopts following technical scheme:

a soft key structure comprising:

the LED lamp comprises a PCB board, wherein a luminous piece is arranged on the PCB board and used for radiating light;

the shell is connected with the end face of the PCB, on which the LED lamp beads are arranged, and the part, facing the luminous piece, of the shell is provided with a mounting groove;

the elastic key is positioned in the mounting groove, the elastic key is connected with the wall of the mounting groove and the PCB, the upper end part of the elastic key is of a closed structure and is made of transparent silica gel, and the upper end part of the elastic key is opposite to the light-emitting piece;

the button cap, the button cap is located in the mounting groove, just the button cap cup joint with the upper end of elasticity button, be provided with transparent icon on the button cap, be provided with the astigmatism piece between button cap and the elasticity button, the astigmatism piece is used for reducing the direct luminousness of light.

By adopting the technical scheme, when the light-emitting piece emits light, the light-scattering piece between the key cap and the elastic key can reduce the light transmittance of the light, so that the condition of dazzling light generated in the use process due to direct light of the light is reduced; in addition, the upper end part of the elastic key is of a closed structure and is made of transparent silica gel, so that on one hand, the stability of the whole key structure can be improved, on the other hand, the transparent silica gel can also block light rays directly, and the uniform brightness and the light softness of the transparent icons on the key cap are further improved. Finally, the situation that the LED lamp beads cause short-term blurred vision of medical staff is avoided as much as possible on the whole, so that the medical hidden trouble is reduced.

Optionally, the light emitting element is an LED lamp bead.

Through adopting above-mentioned technical scheme, when LED lamp pearl is luminous, because the LED lamp pearl is spherical, the light of its radiation is comparatively even, can not concentrate on a certain point or a certain terminal surface to it is also comparatively even to make the light that reaches the transparent icon on the button cap, further avoids the LED lamp pearl to cause medical personnel to appear the condition emergence of short-lived blurred vision as far as possible, thereby reduces the medical hidden danger.

Optionally, the light-diffusing piece is a light-diffusing piece.

By adopting the technical scheme, the light scattering sheet reflects and scatters the light emitted from the LED lamp beads, so that the effect of reducing the light transmittance is achieved.

Optionally, the side parts of the elastic keys are all made of black silica gel.

Through adopting above-mentioned technical scheme, when LED lamp pearl is luminous, black silica gel can absorb the unnecessary light of shining on the elasticity button lateral wall to avoid as far as possible unnecessary light to take place from the condition of reflecting to the transparent icon on the button cap on the lateral wall of elasticity button, thereby further improved the even luminance of transparent icon on the button cap.

Optionally, the light transmittance of a part of the upper end of the elastic key, which is opposite to the LED lamp bead, is relatively low.

Through adopting above-mentioned technical scheme, when the light that LED lamp pearl was radiated is along the direction of perpendicular to elasticity button upper end part when permeating the elasticity button, because it is perpendicular entering, its light's transmissivity is higher relatively, consequently shines the luminance on transparent icon on the button cap also higher relatively, consequently, just setting up the relative lower to the partial luminousness of LED lamp pearl that shows with elasticity button upper end, can make as far as possible to reach the light intensity of transparent icon on the button cap and keep unanimous to further improved the even luminance of transparent icon on the button cap.

Optionally, the elasticity button includes button portion and supporting part, button portion with button cap butt, supporting part with the PCB board is connected, supporting part is connected with button portion, just supporting part plays an elastic support's effect to button portion.

Through adopting above-mentioned technical scheme, when the extrusion button cap, the button cap drives the button portion of elasticity button and removes along the direction that is close to the PCB board, and button portion extrusion supporting part for the supporting part takes place elastic bending, then cancels the extrusion force to the button cap, and supporting part resets, thereby drives the button portion and the button cap of elasticity button and resumes the normal position, thereby realizes that supporting part plays an elastic support's effect to the button portion.

Optionally, an annular silica gel pad is arranged between the elastic key and the PCB.

By adopting the technical scheme, the stability of the key structure can be improved by the annular silica gel pad at the bottom; meanwhile, the probability that water drops enter the elastic keys can be reduced, so that the waterproof performance of the key structure is improved.

Optionally, a hose is arranged between the key cap and the wall of the installation groove.

By adopting the technical scheme, when the key cap moves downwards, the gap between the key cap and the wall of the mounting groove is increased, and the hose can reduce the probability that water drops enter the mounting groove from the gap; meanwhile, dust can be prevented from entering the mounting groove as much as possible, so that the situation that the mounting groove is blocked by the dust is avoided as much as possible.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the light scattering sheet can reflect and scatter light rays between the key cap and the elastic keys for multiple times, so that the direct light transmittance of the key structure is reduced, and the occurrence of dazzling light in the use process caused by direct light irradiation of the light is reduced; in addition, the transparent part at the upper end of the elastic key can prevent direct irradiation of light rays, so that the uniform brightness of the key cap pattern and the softness of the light rays are further improved, the situation that the LED lamp beads cause short-term blurred vision of medical staff is avoided as much as possible on the whole, and the medical hidden trouble is reduced.

2. The annular silica gel pad can improve the stability of the key structure on one hand; meanwhile, the probability that water drops enter the elastic keys can be reduced, so that the waterproof performance of the key structure is improved;

3. the hose can reduce the probability that water drops enter the mounting groove from the gap; meanwhile, dust can be prevented from entering the mounting groove as much as possible, so that the situation that the mounting groove is blocked by the dust is avoided as much as possible.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an elastic key according to an embodiment of the present application.

Reference numerals illustrate:

1. a PCB board; 2. a housing; 21. a mounting groove; 3. an elastic key; 31. a key section; 32. a support part; 4. a key cap; 41. a transparent icon; 5. a light emitting member; 51. LED lamp beads; 6. a light diffusing member; 61. a diffuser; 7. an annular silica gel pad; 8. and (3) a hose.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-2.

The embodiment of the application discloses a soft light key structure. Referring to fig. 1 and 2, a soft key structure includes a PCB board 1, a housing 2, an elastic key 3, and a key cap 4.

Referring to fig. 1 and 2, a housing 2 is fixedly connected to one end of a PCB board 1, and a mounting groove 21 for mounting an elastic key 3 and a key cap 4 is formed in the housing 2.

The elastic key 3 includes a key part 31 and a support part 32, the key part 31 is abutted against the key cap 32, the support part 32 is connected with the PCB board 1, and the support part 32 is connected with the key part 31. When the key cap 4 is pressed, the key cap 4 drives the key part 31 of the elastic key 3 to move along the direction close to the PCB 1, the key part 31 presses the supporting part 32, so that the supporting part 32 is elastically bent, then the pressing force to the key cap 4 is canceled, and the supporting part 32 is reset, so that the key part 31 of the elastic key 3 and the key cap 4 are driven to restore to the original position.

In this embodiment, the elastic key 3 is made of a silica gel material, the elastic key 3 is located in the mounting groove 21, the lower end portion of the elastic key 3 is connected with the PCB board 1, the key cap 4 is sleeved on the upper end portion of the elastic key 3, the key cap 4 is abutted to the groove wall of the mounting groove 21, and a transparent icon 41 is disposed on the end surface of the key cap 4 away from the elastic key 3. The key cap 4 is made of plastic in this embodiment, and has a certain elasticity so as to clamp the key cap 4 in the mounting groove 21.

The elastic key 3 can be fixedly connected with the PCB 1 or abutted against the PCB. The embodiment is preferably fixedly connected so as to enhance the overall connection strength of the key structure; the fixed connection can also be welded or bonded by glue, and the embodiment is preferably bonded by glue, so that the elastic key 3 is convenient to detach and mount.

In addition, referring to fig. 2, the pcb board 1 is provided with a light emitting element 5, and the light emitting element 5 may be a cube LED lamp, a column LED lamp, or the like, and in this embodiment, the light emitted by the light emitting element is preferably spherical LED lamp beads 51, which are relatively even, and the light reaching a certain point or a certain end surface will not be concentrated, so that the light reaching the transparent icon 41 on the key cap 4 is relatively even.

With continued reference to fig. 2, a light-diffusing piece 6 is disposed between the key cap 4 and the elastic key 3, the light-diffusing piece 6 in this embodiment is preferably a light-diffusing piece 61, and the light-diffusing piece 61 can reflect and diffuse the light emitted by the LED lamp beads 51, so as to reduce the light transmittance of the light, and therefore, the light reaching the transparent icon 41 on the key cap 4 is reduced, thereby reducing the glare in the use process caused by direct light irradiation.

Secondly, the upper end part of the elastic key 3 is of a closed structure and made of transparent silica gel, and the upper end part of the elastic key 3 faces the LED light beads.

In summary, when the LED beads 51 radiate light, the light-diffusing sheet 61 between the key cap 4 and the elastic key 3 reflects and diffuses the light, so as to reduce the light transmittance of the light, and thus reduce the glare caused by direct light; in addition, the upper end part of the elastic key 3 is of a closed structure and is made of transparent silica gel, so that on one hand, the stability of the whole key structure can be improved, on the other hand, the transparent silica gel can also block light rays directly, the uniform brightness and the light softness of the transparent icon 41 on the key cap 4 are further improved, and the appearance of the transparent icon 41 is improved. Finally, the situation that the LED lamp beads 51 cause short-term blurred vision of medical staff is avoided as much as possible, so that the medical hidden trouble is reduced.

In order to further improve the uniform brightness and the softness of the light of the transparent icon 41 on the key cap 4, a continuous chute can be formed in the part of the upper end of the elastic key 3, which is right opposite to the LED lamp beads 51, so as to increase the refraction and reflection effects on the light, thereby reducing the light transmittance; in addition, when the elastic key 3 is produced, the mass density of the part, which is right opposite to the LED lamp beads 51, of the upper end of the elastic key 3 is relatively high, so that light is not easy to pass through the elastic key 3 along the direction perpendicular to the upper end part of the elastic key 3, and the effect of reducing the light transmittance is achieved.

In order to further improve the uniform brightness of the transparent icon 41 on the key cap 4, the side wall portion of the elastic key 3 is preferably made of black silica gel or other silica gel materials capable of absorbing light, and the black silica gel can absorb the excessive light irradiated on the side wall of the elastic key 3, so as to avoid the occurrence of the situation that the excessive light is reflected from the side wall of the elastic key 3 to the transparent icon 41 on the key cap 4 as much as possible.

In order to improve the waterproof performance of the key structure, an annular silica gel pad 7 is arranged between the elastic key 3 and the PCB 1, and the annular silica gel pad 7 and the elastic key 3 are integrally formed in the embodiment, so that the stability of the key structure can be improved by the annular silica gel pad 7 on one hand; and meanwhile, the probability that water drops enter the elastic keys 3 can be reduced.

Further, the hose 8 is provided between the key cap 4 and the wall of the installation groove 21, so that not only is the probability of water drops entering the installation groove 21 reduced, but also dust can be prevented from entering the installation groove 21 as much as possible.

The implementation principle of the soft light key structure in the embodiment of the application is as follows: when the LED lamp beads 51 radiate light, the light firstly irradiates the upper end part of the elastic key 3, and the upper end part of the elastic key 3 is of a closed structure and made of transparent silica gel, so that on one hand, the stability of the whole key structure can be improved, on the other hand, the transparent silica gel can also block the light directly, especially the light directly irradiating the elastic key 3, and the uniform brightness and the light softness of the transparent icon 41 on the key cap 4 are improved. Then, the light diffusion sheet 61 between the key cap 4 and the elastic key 3 reflects and diffuses light, so that the light transmittance of the light is reduced, the light reaching the transparent icon 41 is relatively uniform, and the condition that glare occurs in the use process due to direct light of the light is reduced. Finally, the situation that the LED lamp beads 51 cause short-term blurred vision of medical staff is avoided as much as possible, so that the medical hidden trouble is reduced.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A soft key structure, comprising:

the LED lamp comprises a PCB (1), wherein a luminous piece (5) is arranged on the PCB (1);

the shell (2), the end face of the shell (2) provided with the luminous piece (5) is connected with the PCB (1), and a part of the shell (2) facing the luminous piece (5) is provided with a mounting groove (21);

the elastic key (3) is positioned in the mounting groove (21), the elastic key (3) is connected with the groove wall of the mounting groove (21) and the PCB (1), the upper end part of the elastic key (3) is of a closed structure and is made of transparent silica gel, and the upper end part of the elastic key (3) is opposite to the light emitting piece (5);

the button cap (4), button cap (4) are located in mounting groove (21), just button cap (4) cup joint in the upper end of elasticity button (3), be provided with astigmatism piece (6) between button cap (4) and elasticity button (3), astigmatism piece (6) are used for reducing the luminousness of light.

2. The soft key structure of claim 1, wherein: the luminous piece (5) is an LED lamp bead (51).

3. The soft key structure of claim 1, wherein: the light-diffusing piece (6) is a light-diffusing piece (61).

4. The soft key structure of claim 1, wherein: the side parts of the elastic keys (3) are all made of black silica gel.

5. A soft key structure according to claim 2, wherein: the light transmittance of the part, opposite to the LED lamp beads (51), of the upper end of the elastic key (3) is lower than that of the other parts.

6. The soft key structure of claim 1, wherein: the elastic key (3) comprises a key part (31) and a supporting part (32), the key part (31) is abutted to the key cap (4), the supporting part (32) is connected with the PCB (1), the supporting part (32) is connected with the key part (31), and the supporting part (32) plays an elastic supporting role on the key part (31).

7. The soft key structure of claim 1, wherein: an annular silica gel pad (7) is arranged between the elastic key (3) and the PCB (1).

8. The soft key structure of claim 1, wherein: a hose (8) is arranged between the key cap (4) and the wall of the installation groove (21).