Light and thin waterproof touch switch with lamp

Abstract

The invention discloses a light and thin waterproof touch switch with a lamp. The light and thin waterproof touch switch comprises a switch base, a base cover, an elastic key cap, an elastic coupling piece, two conductive terminals and an LED light source, wherein a containing cavity is formed in the switch base, the base cover covers a base opening of the switch base, and the elastic key cap, the elastic coupling piece, the two conductive terminals and the LED light source are sequentially arranged in the containing cavity from top to bottom. A force application part abutting against the top of the elastic coupling piece is formed in the middle of the bottom end of the elastic key cap, and the bottom end of the elastic key cap extends towards the periphery to form a sealing part used for sealing a gap between the base cover and the switch base. The elastic coupling piece is provided with a light hole opposite to the LED light source; under the condition that the LED light source is loaded, the light touch switch has waterproof performance, the overall thickness of the light touch switch is reduced, and the light and thin performance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof light-touch switches with lights, and in particular to a light and thin waterproof light-touch switch with lights. Background Art

[0002] A touch switch is an electronic switch. When in use, the external button is pressed, which causes the metal spring inside the base to sink and connect the positive and negative static contacts of the base, thereby completing the circuit. When the external button is released, the metal spring returns to its convex shape, and the circuit returns to the disconnected state. In daily use, liquids in the external environment can easily enter the touch switch through the gap between the external button and the base, causing the internal conductive parts to break.

[0003] The Chinese patent with patent number CN202322683719.7 discloses a multi-color waterproof touch switch with light, including a waterproof lighted button, a base, a button support seat, and a metal shrapnel for connecting the positive static contact piece and the negative static contact piece of the base. The metal shrapnel is arranged in the concave cavity of the base, and an elastic waterproof partition is provided between the base and the button support seat. The waterproof lighted button is fixedly arranged at the button support seat, and the button support seat is provided with a number of metal contacts for electrically connecting to the LED lamp beads of the waterproof lighted button. The metal contacts include an inner contact portion and an exposed contact portion.

[0004] In the above patent, an elastic waterproof partition is provided to close the top opening of the base, so that the touch switch has waterproof performance; however, since the elastic waterproof partition is an independent part with a certain thickness, the overall thickness of the touch switch is increased, affecting the lightness and thinness. Summary of the Invention

[0005] The object of the present invention is to provide a thin and light-emitting waterproof tact switch, which can reduce the overall thickness while achieving waterproofness and loading a light, thereby improving the lightness and thinness of the tact switch.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A thin, light-emitting diode (LED) waterproof tact switch comprises a switch base with an internal accommodating chamber, a base cover disposed at the base opening of the switch base, and an elastic keycap, an elastic coupling member, two conductive terminals, and an LED light source arranged in descending order within the accommodating chamber. The elastic keycap has a force-applying portion formed in the middle of its bottom end for contacting the top of the elastic coupling member, and a sealing portion extending from the bottom end of the elastic keycap to form a sealing portion for sealing the gap between the base cover and the switch base. The elastic coupling member has a light-transmitting hole disposed opposite the LED light source.

[0008] On the basis of the above technical solution, the present invention can be improved as follows:

[0009] Furthermore, one of the conductive terminals is provided with a conductive support portion, and an insulating support portion is provided in the accommodating chamber at a position corresponding to the other conductive terminal; the elastic coupling member extends from the bottom end to the surrounding areas to form an edge portion, and the edge portion abuts against the conductive support portion and the insulating support portion.

[0010] Furthermore, coupling parts are provided on the two conductive terminals. When the elastic keycap is pressed, the elastic coupling piece is elastically deformed under the driving force of the force-applying part on the elastic keycap and is coupled with the coupling part.

[0011] Furthermore, the switch seat is provided with an anchoring portion at the top, and the seat cover is provided with an anchoring hole adapted to the anchoring portion, and the anchoring portion and the anchoring hole are anchored to each other so that the switch seat and the seat cover are fixedly connected to each other.

[0012] Furthermore, the base cover is provided with a through hole, and the top end of the elastic keycap extends out of the switch base through the through hole.

[0013] Furthermore, the force-applying portion of the elastic keycap is a conical boss whose diameter gradually decreases from top to bottom, and the conical boss can abut against the top of the elastic coupling member along the vertical direction.

[0014] Furthermore, a limiting flange is provided on the top surface of the switch seat, and the limiting flange can be embedded in the bottom surface of the sealing portion of the elastic keycap when the seat cover and the switch seat are connected to each other.

[0015] Furthermore, the elastic coupling member is a circular disc that is high in the middle and low around the edges, and the circular disc extends to the edges at the lowest point; the light-transmitting hole is opened at the top center of the circular disc.

[0016] Furthermore, the circular disc is formed with at least two supporting bosses on the edge portion, and the circular disc abuts against the conductive support portion and the insulating support portion through the supporting bosses.

[0017] Furthermore, the switch seat is provided with a lamp trough in the middle of the bottom wall of the accommodating chamber, and the LED light source is accommodated in the lamp trough; the LED light source is provided with LED lamp pins at the positive pole and the negative pole respectively, and the LED lamp pins extend out of the switch seat.

[0018] Compared with the prior art, the technology of the present invention has the following advantages:

[0019] The present invention provides a force-applying portion in the middle of the bottom end of the elastic keycap and a sealing portion around the bottom end of the elastic keycap; when the elastic keycap is pressed, the force-applying portion drives the elastic coupling member to couple with the two conductive terminals, and the sealing portion can seal the gap between the base cover and the switch base without the need for additional sealing members. The bright light generated by the LED light source passes through the light-transmitting hole on the elastic coupling member and illuminates the elastic keycap to be transmitted outward, so that the touch switch can have waterproof performance when the LED light source is loaded, and the overall thickness of the touch switch can be reduced to improve the lightness and thinness. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of a thin and light-emitting waterproof touch switch in Example 1;

[0022] Figure 2 This is a disassembly diagram of the thin and light-emitting waterproof touch switch in Example 1;

[0023] Figure 3 This is a cross-sectional view of the thin and light-emitting waterproof touch switch in Example 1;

[0024] Figure 4 This is a schematic structural diagram of the switch base in Example 1;

[0025] Figure 5 Schematic diagram of the top surface structure of the elastic keycap in Example 1;

[0026] Figure 6 Schematic diagram of the bottom surface structure of the elastic keycap in Example 1;

[0027] Figure 7 Schematic diagram of the structure of the circular disc in Example 1;

[0028] Figure 8 This is a schematic structural diagram of two conductive terminals and LED lamp pins in Example 1;

[0029] Figure 9 This is a schematic structural diagram of two conductive terminals and LED lamp pins in Example 2;

[0030] Figure 10 This is a schematic structural diagram of the two conductive terminals and the LED lamp pin portion in Example 3.

[0031] Markings on the accompanying drawings: 1-switch seat, 101-insulating support part, 102-anchoring part, 103-limiting flange, 104-lamp groove, 2-seat cover, 201-perforation, 202-anchoring hole, 3-elastic keycap, 301-sealing part, 302-force-applying part, 303-annular transition groove, 4-first conductive terminal, 401-conductive support part, 402-first pin part, 5-second conductive terminal, 501-second pin part, 6-coupling part, 7-circular disc, 701-edge part, 702-light-transmitting hole, 703-support boss, 8-SMD LED lamp, 801-LED lamp pin part. DETAILED DESCRIPTION

[0032] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings. The description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] Example 1

[0034] See also Figures 1 to 8 This embodiment relates to a thin and light-emitting waterproof touch switch, including a switch housing, in which an elastic keycap 3, an elastic coupling member, two conductive terminals and an LED light source are arranged in sequence from top to bottom; the switch housing includes a switch base 1 and a base cover 2 connected to each other.

[0035] The base cover 2 is provided with a perforation 201 to facilitate the top end of the elastic keycap 3 to extend outside the switch base 1 for the operator to press; the bottom end of the elastic keycap 3 is formed with a sealing portion 301 and a force-applying portion 302, the sealing portion 301 is used to seal the gap between the base cover 2 and the switch base 1, and the force-applying portion 302 is used to transmit the force applied when pressing the elastic keycap 3 to the elastic coupling member; the elastic coupling member has an edge portion 701.

[0036] For ease of description, the two conductive terminals are named first conductive terminal 4 and second conductive terminal 5 respectively. The first conductive terminal 4 is connected to the input end of the circuit, and the second conductive terminal 5 is connected to the output end of the circuit. The first conductive terminal 4 has a conductive support portion 401. A accommodating chamber for accommodating the elastic coupling is formed inside the switch base 1, and an insulating support portion 101 is provided in the accommodating chamber. In the free state, the edge portion 701 on one side of the elastic coupling is supported on the conductive support portion 401 of the first conductive terminal 4, and the edge portion 701 on the other side of the elastic coupling is supported on the insulating support portion 101 in the accommodating chamber. Coupling portions 6 are provided on the two conductive terminals. When the elastic keycap 3 is pressed, the elastic coupling can be compressed and deformed in the accommodating chamber, and the elastic coupling is simultaneously coupled to the coupling portions 6 on the two conductive terminals to conduct the circuit. When the elastic keycap 3 is released, the elastic coupling recovers under the action of its own elastic force, and the elastic coupling is simultaneously separated from the coupling portions 6 on the two conductive terminals to disconnect the circuit.

[0037] The elastic coupling member is provided with a light-transmitting hole 702 at a position opposite to the LED light source, so that the bright light generated by the LED light source can pass through the elastic coupling member and illuminate the elastic keycap 3 and then be transmitted outwards.

[0038] Specifically, the switch base 1 has a square base structure, and a base opening is formed at the top of the switch base 1, through which the elastic keycap 3, the elastic coupling, the two conductive terminal groups and the LED light source are easily installed into the switch base 1; according to actual conditions, other base structures suitable for installing the elastic keycap 3, the elastic coupling, the two conductive terminals and the LED light source can also be used instead, such as a rectangular base structure; the base cover 2 is arranged at the top base opening of the switch base 1.

[0039] The switch base 1 is provided with an anchoring portion 102 at the top, and the base cover 2 is provided with an anchoring hole 202 adapted to the anchoring portion 102. The anchoring portion 102 and the anchoring hole 202 are anchored together to fix the switch base 1 and the base cover 2 to each other.

[0040] In this embodiment, four anchoring portions 102 are provided, which are respectively arranged at the four right angles of the switch seat 1. The anchoring portions 102 are cylindrical bodies integrally formed on the top surface of the switch seat 1, and the top ends of the anchoring portions 102 are semi-spherical. In this embodiment, the seat cover 2 is a square cover structure corresponding to the seat opening of the switch seat 1. The seat cover 2 has anchoring holes 202 at four right angles. The anchoring portions 102 and the anchoring holes 202 are anchored and matched one by one to fix the switch seat 1 and the seat cover 2 to each other.

[0041] The elastic keycap 3 is made of a light-transmitting silicone material and is formed in one piece. It includes a cap body with a cylindrical structure. The top of the cap body extends axially from the through-hole 201 of the base cover 2 to the outside of the switch base 1. The cap body forms a square sheet-shaped sealing portion 301 on all sides at the bottom end. Since the elastic keycap 3 is made of a light-transmitting silicone material and is formed in one piece, the silicone itself is elastic, which makes the elastic keycap 3 as a whole also elastic. When released, the pressed elastic keycap 3 can recover by its own elasticity, without the need for an additional elastic reset part, effectively reducing the thickness of the light-touch switch. Moreover, when the base cover 2 and the switch base 1 are connected to each other, the sealing portion on the elastic keycap 3 301 is compressed to form elastic force, so that the top surface of the sealing portion 301 is kept in close contact with the bottom surface of the seat cover 2, and the bottom surface of the sealing portion 301 on the elastic keycap 3 is kept in close contact with the top surface of the switch seat 1, thereby sealing the gap between the seat cover 2 and the switch seat 1, effectively preventing external liquid from entering the interior of the switch seat 1, improving the waterproof performance, and achieving waterproofness without the need for additional waterproof parts, which is beneficial to reducing the thickness of the touch switch, thereby improving the lightness and thinness; it should be noted that, in this embodiment, the sealing portion 301 is in the shape of a square sheet. According to actual conditions, a sealing portion 301 of other shapes can also be provided, such as a sealing portion 301 in the shape of a circular or rectangular sheet.

[0042] In order to ensure that the elastic keycap 3 can be pressed normally, the diameter of the through hole 201 on the base cover 2 should be larger than the diameter of the cap body, so that the cap body on the elastic keycap 3 can move axially relative to the base cover 2 at the through hole 201 when pressed; the cap body and the sealing part 301 are provided with an annular transition groove 303 with a circular arc cross-section at the top of the junction. The annular transition groove 303 can form an avoidance space to avoid the elastic keycap 3 from interfering with the bottom edge of the through hole 201 when it is released and rebounds, thereby ensuring that the elastic keycap 3 rebounds and resets smoothly, reducing scratches and correspondingly extending the service life of the elastic keycap 3.

[0043] A force-applying portion 302 is provided at the center of the bottom surface of the cap body. The force-applying portion 302 is a conical boss whose diameter gradually decreases from top to bottom. Since the conical boss itself has anti-lateral force performance in the horizontal direction, it can resist the horizontal force to a certain extent, so that when the elastic keycap 3 is pressed, the conical boss can abut the top of the elastic coupling member in the vertical direction to avoid tilting and sideways, ensuring that the force when pressing the elastic keycap 3 is vertically transmitted to the elastic coupling member, thereby increasing the elastic deformation speed of the elastic coupling member, shortening the coupling time, and thus improving the sensitivity of the on-off circuit of the touch switch.

[0044] A limiting flange 103 is provided on the top surface of the switch base 1. The limiting flange 103 can be embedded in the bottom surface of the sealing portion 301 of the elastic keycap 3 when the base cover 2 and the switch base 1 are connected to each other, so as to limit the radial position of the elastic keycap 3 and prevent the elastic keycap 3 from radial movement when the base cover 2 and the switch base 1 are connected to each other, thereby ensuring that the force-applying portion 302 of the elastic keycap 3 and the top of the elastic keycap 3 can be in contact with force in the vertical direction when the elastic keycap 3 is pressed, and at the same time, the sealing performance of the touch switch is improved; avoidance holes are provided at the four right angles of the sealing portion for the anchoring portion on the switch base 1 to pass through.

[0045] The elastic coupling member is a circular disc 7 with a high center and low edges, and is made of an elastic conductive material, such as copper. The circular disc 7 extends from the lowest point to the surrounding areas to form a square edge portion 701. When the elastic keycap 3 is pressed, the force-applying portion 302 of the elastic keycap 3 contacts the middle of the top of the circular disc 7, so that it can receive the force applied by the elastic keycap 3 and produce elastic deformation into a flat shape, coupling the coupling portions 6 on the two conductive terminals.

[0046] The circular disc 7 has a light-transmitting hole 702 at the center of the top. The diameter of the light-transmitting hole 702 is smaller than the diameter of the force-applying portion 302 on the elastic keycap 3, so as to prevent the force-applying portion 302 on the elastic keycap 3 from being embedded in the circular disc 7 through the light-transmitting hole 702. This allows the top of the circular disc 7 to maintain force contact with the force-applying portion 302 on the elastic keycap 3 when the keycap is pressed.

[0047] The circular disc 7 is recessed downward at the edge 701 to form four supporting bosses 703 . The four supporting bosses 703 are respectively located at right angles to the edge 701 .

[0048] Both conductive terminals are made of conductive metal material and include an integrally formed connecting portion and a pin portion. The connecting portion is embedded in the switch base 1, and the pin portion extends out of the switch base 1. The two conductive terminals are provided with a coupling portion 6 in the middle of the connecting portion, which is exposed on the bottom wall of the accommodating chamber inside the switch base 1. The coupling portion 6 is in the shape of an elongated block and is close to the opposite side of the two conductive terminals. Two conductive support portions 401 are provided, one on each side of the coupling portion 6 on the first conductive terminal 4. The conductive support portion 401 is in the shape of a square block. Other shapes can also be used instead according to actual conditions.

[0049] Two insulating support parts 101 are provided, formed on the bottom wall of the accommodating chamber and located on both sides of the coupling part 6 on the second conductive terminal 5. The insulating support parts 101 are square blocks, and other shapes can also be used instead according to actual conditions.

[0050] In the free state, two of the supporting bosses 703 on the circular disc 7 respectively abut against the two conductive support parts 401 on the first conductive terminal 4, and the other two supporting bosses 703 on the circular disc 7 respectively abut against the two insulating support parts 101 in the accommodating chamber; the tops of the conductive support parts 401 and the insulating support parts 101 both form flat abutting surfaces to increase the contact area with the supporting bosses 703 on the circular disc 7, thereby improving the supporting stability of the circular disc 7; the abutting surfaces of the conductive support parts 401 and the insulating support parts 101 are at the same height, so as to support the circular disc 7 on the same horizontal plane.

[0051] The first conductive terminal 4 forms first pin portions 402 at both ends of the connecting portion. The first pin portion 402 bends downward and extends, then bends outward to form a horizontal shape and extends out of the switch base 1 .

[0052] The second conductive terminal 5 forms second pin portions 501 at both ends of the connecting portion. The second pin portions 501 bend downward and extend, then bend outward to form a horizontal shape and extend out of the switch base 1 .

[0053] Four pins can form four welding points at the bottom of the switch base 1, so that the touch switch can be welded and fixed to the PCB board, ensuring uniform force and improving firmness. In addition, since the pin portions of the two conductive terminals are bent into a horizontal shape, not only can the overall thickness of the touch switch be reduced, but also the gap between the touch switch and the PCB board after welding can be reduced, which is conducive to reducing space occupation.

[0054] The switch base 1 is provided with a lamp groove 104 in the middle of the bottom wall of the accommodating chamber, and the lamp groove 104 contains an LED light source; in this embodiment, the LED light source is a SMD LED lamp 8, and the SMD LED lamp 8 is respectively provided with LED lamp pin parts 801 at the positive and negative poles, and the LED lamp pin parts 801 are bent horizontally and extend out of the switch base 1; when the touch switch is installed, the LED lamp pin parts 801 are welded to the PCB board so that the positive and negative poles of the SMD LED lamp 8 are connected to the light source circuit to conduct light. The LED light source is not controlled by the touch switch in this embodiment, but is controlled by the connected light source circuit. For this reason, the LED light source is connected to the light source circuit in a normally open state, and the touch switch is only used to control the on and off of the circuits on the PCB board except the light source circuit; since the SMD LED lamp 8 is accommodated in the lamp groove 104, the space occupied by the accommodating chamber of the switch base 1 can be reduced, the thickness of the touch switch can be effectively reduced, and the lightness and thinness can be further improved.

[0055] Example 2

[0056] Parameters Figure 9The difference between the technical solution of the second embodiment and the first embodiment is that, in the present embodiment, the first conductive terminal 4 is provided with a first bending portion 403 between the connecting portion and the first pin portion 402; the second conductive terminal 5 is provided with a second bending portion 503 between the connecting portion and the second pin portion 501; the SMD LED lamp 8 is provided with a third bending portion 802 between the two electrodes and the LED lamp pin portion 801; compared with the direct bending forming pin portion in the first embodiment, by adding the bending portion, the single bending length can be reduced, so as to facilitate bending and forming by the mold.

[0057] Example 3

[0058] Parameters Figure 10 The difference between the technical solution of the third embodiment and the second embodiment is that, in the present embodiment, the first pin portion 402, the second pin portion 501 and the LED lamp pin portion 801 extend to the outside of the switch base 1 and are attached to the bottom surface of the switch base 1 after being bent. The switch base 1 is provided with corresponding pin fitting grooves on the bottom surface to facilitate the insertion of the bent pins, thereby reducing the overall size of the touch switch.

[0059] The above embodiments of the present invention are not intended to limit the scope of protection of the present invention, and the implementation methods of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in this field, without departing from the above basic technical ideas of the present invention, should fall within the scope of protection of the present invention.

Claims

1. A thin, waterproof, light-touch switch with an indicator light, comprising a switch base with an internal accommodating chamber, a base cover disposed at the opening of the switch base, and an elastic keycap, an elastic coupling member, two conductive terminals, and an LED light source arranged in descending order within the accommodating chamber; characterized in that: The elastic keycap is formed with a force-applying portion at the middle of the bottom end to resist the top of the elastic coupling member, and the elastic keycap extends to the four sides of the bottom end to form a sealing portion for sealing the gap between the seat cover and the switch seat; the elastic coupling member is provided with a light-transmitting hole opposite to the LED light source.

2. The thin waterproof touch switch with light according to claim 1, characterized in that: One of the conductive terminals is provided with a conductive support portion, and an insulating support portion is provided in the accommodating chamber at a position corresponding to the other conductive terminal; the elastic coupling member extends from the bottom end to the surrounding area to form an edge portion, and the edge portion abuts against the conductive support portion and the insulating support portion.

3. The thin waterproof touch switch with light according to claim 2, characterized in that: The two conductive terminals are provided with coupling parts. When the elastic keycap is pressed, the elastic coupling piece is elastically deformed under the driving force of the force-applying part on the elastic keycap and is coupled with the coupling part.

4. The thin waterproof touch switch with light according to claim 3, characterized in that: The switch seat is provided with an anchoring portion at the top, and the seat cover is provided with an anchoring hole adapted to the anchoring portion. The anchoring portion and the anchoring hole are anchored together to ensure that the switch seat and the seat cover are fixedly connected to each other.

5. The thin waterproof touch switch with light according to claim 4, characterized in that: The seat cover is provided with a through hole, and the top end of the elastic key cap extends out of the switch seat through the through hole.

6. The thin waterproof touch switch with light according to claim 5, characterized in that: The force-applying portion of the elastic keycap is a conical boss whose diameter gradually decreases from top to bottom, and the conical boss can abut against the top of the elastic coupling member along the vertical direction.

7. The thin waterproof touch switch with light according to claim 6, characterized in that: The switch seat is provided with a limiting flange on the top surface, and the limiting flange can be embedded in the bottom surface of the sealing portion of the elastic keycap when the seat cover and the switch seat are connected to each other.

8. The thin and light waterproof touch switch with light according to claim 7, characterized in that: The elastic coupling member is a circular disc with a high middle and low sides. The circular disc extends to the sides at the lowest point to form an edge portion. The light-transmitting hole is opened at the top center of the circular disc.

9. The thin and light waterproof touch switch with light according to claim 8, characterized in that: The circular disc is formed with at least two supporting bosses on the edge portion, and the circular disc abuts against the conductive support portion and the insulating support portion through the supporting bosses.

10. The thin and light waterproof touch switch with light according to claim 9, characterized in that: The switch seat is provided with a lamp groove in the middle of the bottom wall of the accommodating chamber, and the LED light source is accommodated in the lamp groove; the LED light source is provided with LED lamp pin parts at the positive pole and the negative pole respectively, and the LED lamp pin parts extend out of the switch seat.

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