CN218548272U - Luminous switch - Google Patents

Abstract

A luminescent switch, comprising: a base having a switch surface; the plurality of terminals are fixed on the base and comprise two first terminals, and the first terminals are provided with a first connecting part exposed out of the switch surface; the conductive elastic sheet is positioned above the switch surface; the pressing block is positioned above the conductive elastic sheet; the conductive elastic sheet, the pressing block and the key are sequentially stacked from bottom to top, the light-emitting diode is accommodated in the key and provided with a light-emitting body and two pins connected with the light-emitting body, the light-emitting diode keeps static when the key moves up and down, the two first guide connecting parts are respectively provided with a through hole, each pin penetrates through one of the through holes, and each pin is limited in the corresponding through hole and is electrically connected with the inner wall of the through hole.

Description

Luminous switch

[ technical field ] A method for producing a semiconductor device

The present invention relates to a light emitting switch, and more particularly to a light emitting switch using a light emitting diode as a light source.

[ background of the invention ]

Chinese patent No. 200620076140.8 discloses a switch with light emitting diode, which comprises an insulating body, wherein the insulating body is provided with an accommodating space, the elastic sheet, the pressing body, the positioning body, the light emitting diode and the operating body are sequentially accommodated in the accommodating space from bottom to top, after the operating body is pressed, the positioning body is extruded by the operating body to sequentially drive the pressing body and the elastic sheet to move downwards together, but the light emitting diode is kept still, and the pressing body presses the elastic sheet downwards to enable the elastic sheet to elastically deform, so as to form a circuit switch with a terminal fixed on the body. For the push type switch, the operation can be completed only by transmitting the stress of the operation body to the elastic sheet, and the operation body and the elastic sheet are separated by the positioning body and the pressing body, and the positioning body is redundant only in terms of transmitting the stress, so that the material cost of a product is increased, however, if the positioning body is omitted, the position of the light emitting diode is possibly deviated in the assembling process, and the subsequent assembling process is influenced.

Therefore, there is a need for a light emitting switch to overcome the above problems.

[ Utility model ] content

To the problem that the background art faces, the utility model provides a luminous switch, only have one between its button and the electrically conductive shell fragment and press the briquetting, and emitting diode's pin passes and is spacing in the through-hole of terminal.

In order to achieve the above object, the utility model adopts the following technical means:

a luminescent switch, comprising: a base having a switch surface; the plurality of terminals are fixed on the base and comprise two first terminals, and the first terminals are provided with a first connecting part exposed out of the switch surface; a conductive elastic sheet, which is positioned above the switch surface; the pressing block is positioned above the conductive elastic sheet; the key is positioned above the pressing block and provided with a first accommodating groove positioned in the key, the key is also provided with two through grooves, each through groove penetrates through the key along the horizontal direction and is communicated with the first accommodating groove, the conductive elastic sheet, the pressing block and the key are sequentially stacked from bottom to top, and the key and the pressing block can move up and down relative to the base together to apply pressure to the conductive elastic sheet or relieve pressure; the light-emitting diode is provided with a light-emitting body and two pins connected with the light-emitting body, the light-emitting body is positioned in the first accommodating groove, each pin penetrates through one of the through grooves, and the light-emitting diode keeps static relative to the base when the key moves up and down; the method is characterized in that: the two first conductive parts are respectively provided with a through hole, each pin penetrates through one of the through holes, and each pin is limited in the corresponding through hole and is electrically connected with the inner wall of the through hole.

Furthermore, the key is provided with a second accommodating groove which is positioned below the first accommodating groove, the width of the second accommodating groove along the horizontal direction is greater than that of the first accommodating groove, and the pressing block is always fixed in the second accommodating groove and positioned below the light-emitting body.

Furthermore, the outer side surface of the key is provided with at least one fool-proof convex rib, the base is provided with at least one fool-proof groove, and the fool-proof convex rib is contained in the fool-proof groove.

Furthermore, the base is provided with two first protruding parts protruding from the switch surface, an abdicating groove is formed between the two first protruding parts, the terminals comprise two second terminals, each second terminal is provided with a second guide connecting part exposed out of the switch surface, the conductive elastic sheet is provided with at least two contact pins, the lower surface of each contact pin is provided with a second protruding part, the two first protruding parts are positioned below one contact pin, the abdicating groove is positioned right below the corresponding second protruding part, the protruding height of the second protruding part is larger than the depth of the abdicating groove, the two contact pins are kept in contact with the two second guide connecting parts before the key is pressed downwards, the pressure of the pressed key is transmitted to the conductive elastic sheet to enable the conductive elastic sheet to generate elastic deformation, the second protruding part enters the abdicating groove and abuts against the switch surface, and the contact pins warp and are separated from the second guide connecting parts.

Furthermore, the plurality of terminals further include a third terminal, the third terminal has a third conductive portion exposed from the switch surface, the third conductive portion is located below the center of the conductive elastic sheet and is used for contacting with the conductive elastic sheet deformed downwards, the third terminal also has two embedded portions located at two lengthwise ends of the third conductive portion, and the two embedded portions are embedded in the base.

Furthermore, the base is also provided with a pin guide groove which extends up and down, the pin is inserted into the through hole from top to bottom through the pin guide groove, and one part of the pin, which is positioned above the through hole, is accommodated in the pin guide groove.

Furthermore, the base is provided with a plurality of first clamping points positioned in the pin guide groove, the first guide connection part is provided with a plurality of second clamping points positioned in the through holes, and the pin is fixed by mutual interference of the first clamping points and the second clamping points.

Furthermore, the base is provided with an accommodating cavity, the conductive elastic sheet, the pressing block and the key are accommodated in the accommodating cavity, the switch surface is used as the bottom surface of the accommodating cavity, the outer side surface of the key is provided with at least one limiting bump, the limiting bump extends to the bottom surface of the key, the base is provided with at least one boss, the boss is positioned in the accommodating cavity and higher than the switch surface, and the limiting bump is positioned right above the corresponding boss.

Furthermore, the pressing block is an elastic body, and the distance between the pressing block and the switch surface is smaller than the distance between the limiting convex block and the boss.

Further, the conductive elastic sheet is provided with a central part which is arched upwards, and before the key is pressed down, the height of the central part relative to the switch surface is smaller than that of the lug boss relative to the switch surface.

The utility model discloses a luminous switch has following technological effect: the conductive elastic sheet, press the piece and the button to stack in proper order, make the pressure that presses the button and form just transmit conductive elastic sheet through a pressure piece, for prior art reduced the component quantity between conductive elastic sheet and the button, reduced the material cost, set up the through-hole on first terminal on this basis, make two pins of emitting diode correspond to pass and spacing in the through-hole, fix a position two pins of emitting diode, help emitting diode to realize the location in the equipment process, luminous switch's the equipment degree of difficulty has been reduced.

[ description of the drawings ]

Fig. 1 is a perspective view of a light emitting switch of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of one of the contact pins covering the first protrusion and the relief groove;

FIG. 4 is a top view of FIG. 1;

FIG. 5 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 4 in an initial state of the illuminated switch;

FIG. 6 is a sectional view taken along line B-B of FIG. 4 in an initial state of the light emitting switch;

FIG. 7 is a partial cross-sectional view taken along line C-C of FIG. 4 in an initial state of the illuminated switch;

FIG. 8 is a schematic diagram of the light emitting switch shown in FIG. 5 being switched to a triggered state;

FIG. 9 is a schematic diagram of the light emitting switch shown in FIG. 6 being switched to a triggered state;

fig. 10 is a schematic diagram illustrating the light emitting switch shown in fig. 7 switched to a triggered state.

The reference numbers illustrate:

base 1 accommodating cavity 11 of luminous switch 1000

Pin guide groove 13 of fool-proof groove 12 of switch surface 111

First stuck point 131 key guide groove 14 boss 141

Positioning column 16 with first protruding part 15 abdicating groove 151

Mounting surface M fixture block 17 first terminal 2

First lead-in part 21 through hole 211

Second terminal 3, second lead-in part 31, third terminal 4

The third lead-in portion 41 contacts the embedded portion 42 of the protrusion 411

Extending part 43 welding part S conductive spring 5

The central portion 51 contacts the second projection 521 of the leg 52

First accommodation groove 71 of press block 6 key 7

Fool-proof rib 74 of through groove 73 of second accommodating groove 72

Limiting bump 75 light emitting diode 8 light emitting body 81

Pin 82 and hole 91 of cover 9

[ detailed description ] embodiments

For better understanding of the objects, structures, features, and functions of the present invention, reference should now be made to the drawings and detailed description of the invention.

As shown in fig. 1 to 10, an embodiment of a light emitting switch 1000 of the present invention includes a base 1, a plurality of terminals, a conductive elastic sheet 5, a pressing block 6, a key 7, a light emitting diode 8, and a cover 9. In this embodiment, the light emitting switch 1000 is soldered on a circuit board (not shown), the operator presses the key 7 to trigger a circuit switch therein, the pressing action is converted into an electrical signal on the circuit, and the electrical signal is received by other components through the circuit board, and the light emitting diode 8 can change color after the pressing action, so as to provide a visual indication for the operator to successfully trigger the switch. The foregoing description of the function of the illuminated switch 1000 is intended to fully describe the illuminated switch 1000, rather than to provide functional limitations for the illuminated switch 1000 of the present invention, and the illuminated switch 1000 of the present invention can be used to implement other functions. In addition, in the present embodiment, the key 7 can move only in a single direction when pressed, and the rear key 7 is not pressed and reset in the opposite direction, for convenience of description, the moving direction in which the key 7 is pressed is taken as a downward direction, and the moving direction in which the key 7 is reset is taken as an upward direction; the state before the key 7 is pressed is used as the initial state or default state of the light-emitting switch 1000, and the state after the key 7 is pressed and successfully triggers the electrical signal is used as the trigger state of the light-emitting switch 1000.

As shown in fig. 2 and 3, the base 1 is formed by plastic injection molding, and includes a top surface, a bottom surface and four side surfaces connecting the top surface and the bottom surface, the base 1 has a receiving cavity 11 extending downward from the top surface, and the bottom surface of the receiving cavity 11 defines a switch surface 111. The base 1 further has four fool-proof grooves 12, two pin guide grooves 13 and two key guide grooves 14 extending downward from the top surface thereof, and these fool-proof grooves 12, pin guide grooves 13 and key guide grooves 14 are all communicated with the accommodation cavity 11. The fool-proof grooves 12 extend to the switch surface 111, wherein the shapes of two fool-proof grooves 12 are different from the shapes of the other two fool-proof grooves 12, and the four fool-proof grooves 12 are used for matching with the corresponding structures of the keys 7 to prevent assembly errors. Both pin guide grooves 13 extend to the switch surface 111 and are located above the two terminals, and in this embodiment, the groove wall surface of each pin guide groove 13 has a plurality of first clamping points 131. The key guide 14 does not extend to the switch surface 111, so that the bottom surface of each key guide 14 forms a projection 141 with respect to the switch surface 111.

As shown in fig. 3, in the accommodating cavity 11, the base 1 has two first protruding portions 15 protruding from the switch surface 111, a yielding groove 151 is formed between the two first protruding portions 15, and the two first protruding portions 15 and the yielding groove 151 are both located below the conductive elastic piece 5.

As shown in fig. 1 and fig. 2, one side of the base 1 has two positioning posts 16, the side serves as a mounting surface M of the base 1 facing the circuit board, and the positioning posts 16 are inserted into corresponding holes of the circuit board to position the base 1 on the circuit board. Two sides on both sides of the mounting surface M are respectively provided with a protruding latch 17 for snap-fastening the housing 9. In other embodiments, the mounting surface M of the base 1 may be disposed on the bottom surface of the base 1 instead of the side surface, and the illustrated embodiment is not limited thereto.

As shown in fig. 1 and 2, a plurality of terminals are fixed to the base 1, and include two first terminals 2, two second terminals 3, and one third terminal 4. The three kinds of terminals have different overall shapes, but each terminal has a soldering portion S through which each terminal is electrically connected to the circuit board. Each of the soldering portions S protrudes out of the base 1 on the mounting surface M in the same direction as the positioning post 16.

As shown in fig. 2, 5 and 6, each first terminal 2 further has a first conductive portion 21 exposed on the switch surface 111, each first conductive portion 21 has a through hole 211 and a plurality of second clamping points (not numbered) located in the through hole 211, each through hole 211 is located right below one of the pin guiding grooves 13, one of the first terminals 2 is used as a positive electrode, and the other first terminal 2 is used as a negative electrode. Each second terminal 3 further has a second connection portion 31 exposed on the switch surface 111, the second connection portion 31 is flat, and one second connection portion 31 is adjacent to two first protruding portions 15. The third terminal 4 has a third conductive portion 41 exposed on the switch surface 111 and an extending portion 43, the extending portion 43 spans the switch surface 111, the third conductive portion 41 extends perpendicular to a midpoint of the extending portion 43, the third conductive portion 41 extends to a center of the switch surface 111 and is located right below a center of the conductive elastic sheet 5, and an upper surface of the third conductive portion 41 has a contact protrusion 411 protruding upward for contacting the conductive elastic sheet 5. The third terminal 4 further has two embedded portions 42 located at two ends of the third conductive portion 41, and the embedded portions 42 are obliquely fixed in the base 1 to prevent the third conductive portion 41 from warping after being pressed by the conductive elastic sheet 5.

As shown in fig. 2, 3 and 7, the conductive elastic sheet 5 is located in the accommodating cavity 11 and above the switch surface 111. The conductive elastic sheet 5 includes a central portion 51 and four contact pins 52 extending outwardly and downwardly from the peripheral edge of the central portion 51. In the initial state, the four contact legs 52 support the entire conductive spring 5, and the central portion 51 is arched upward and has a dome shape. Four contact pins 52 are symmetrically and equally spaced around the periphery of the central portion 51, two of the contact pins 52 are located above and in contact with the two second conductive portions 31, and the other two contact pins 52 are located above and in contact with the switch plane 111. The two contact pins 52 contacting the second conductive connection portion 31 both support and conduct electricity, so that the two second terminals 3 are electrically connected through the conductive elastic sheet 5, and the two contact pins 52 not contacting the second conductive connection portion 31 only support. The lower surface of each contact leg 52 has a second protrusion 521 protruding downward. One of the contact pins 52 covers the two first protruding portions 15 and the receding groove 151 above, the corresponding second protruding portion 521 is located above the receding groove 151, and the protruding height D1 of the second protruding portion 521 is greater than the depth D2 of the receding groove 151, that is, greater than the height D2 of the first protruding portion 15 relative to the switch surface 111, so that after the conductive elastic sheet 5 is deformed by sinking downward, the second protruding portion 521 can contact the switch surface 111 before the contact pin 52 contacts the first protruding portion 15. In other embodiments, which are not shown in the drawings, the number of the contact pins 52 on the conductive elastic sheet 5, which are not in contact with the second conductive connecting portion 31, is variable, and at least two contact pins 52 for contacting two second conductive connecting portions 31 are provided regardless of the number of the contact pins 52 that are used for supporting only.

As shown in fig. 2, 5 and 6, the pressing block 6 is an elastic member, and is located in the accommodating cavity 11 and above the conductive elastic sheet 5, and the lower surface of the pressing block 6 abuts against the center of the central portion 51.

As shown in fig. 2, 5 and 6, the push button 7 has a substantially cylindrical shape, a portion of which is located in the housing cavity 11, and the remaining portion of which protrudes upward with respect to the top surface of the base 1 for the operator to push. The key 7 has a first receiving groove 71 inside the key 7 and a second receiving groove 72 below the first receiving groove 71, the width of the second receiving groove 72 along the line B-B is larger than the width of the first receiving groove 71, the first receiving groove 71 and the second receiving groove 72 are vertically communicated, and the second receiving groove 72 penetrates through the lower surface of the key 7. The key 7 further has two through grooves 73 located at two opposite sides of the first receiving groove 71, and the through grooves 73 are communicated with the first receiving groove 71 along the extending direction of the linebase:Sub>A-base:Sub>A and penetrate through the outer circumferential surface of the key 7. The first receiving groove 71 and the through groove 73 receive the light emitting diode 8, and the key 7 keeps a distance from the light emitting diode 8, that is, the key 7 does not contact the light emitting diode 8. The pressing block 6 is received in the second receiving groove 72 and is held and fixed by the key 7, so that when the key 7 is pressed downward, the pressing block 6 moves downward along with the key 7. In this embodiment, the keys 7 are made of a transparent material to avoid shielding the light generated by the leds 8.

As shown in fig. 2, 5 and 6, the outer circumferential surface of the key 7 further has four fool-proof ribs 74 (only three of them are shown) and two limit protrusions 75, which extend upward and downward. Two of the four fool-proof ribs 74 are different in shape from the other two and match the corresponding fool-proof grooves 12 of different shapes. The limiting convex block 75 is matched with the key guide groove 14, the lower surface of the limiting convex block 75 is flush with the lower surface of the whole key 7, the limiting convex block 75 is positioned right above the corresponding boss 141, and the maximum downward displacement stroke of the key 7 is equal to the distance between the limiting convex block 75 and the boss 141. When the key is in the initial state, the distance D3 between the limiting convex block 75 and the boss 141 is greater than the distance D4 between the lower surface of the pressing block 6 and the switch surface 111, and the elastic material of the pressing block 6 is matched, so that after the central part 51 is pressed down to the height of the switch surface 111 by the pressing block 6, the key 7 still has a little descending space, and the pressing hand feeling of the key 7 is improved by the arrangement. In the initial state, the height of the boss 141 with respect to the switch surface 111 is greater than the height of the central portion 51 with respect to the switch surface 111 to prevent the conductive dome 5 from being excessively pressed. In other embodiments, the number of the fool-proof ribs 74 may vary, but at least one fool-proof rib 74 is required to enable the key 7 to be assembled correctly.

As shown in fig. 2, 5 and 6, the light emitting diode 8 includes a light emitting body 81 and two leads 82 extending from a lower surface of the light emitting body 81, wherein one of the leads 82 serves as a positive electrode and the other of the leads 82 serves as a negative electrode. The light emitting body 81 is accommodated in the first accommodation groove 71. The pin 82 extends through the through slot 73 to expose the outer surface of the key 7, and then extends downward through the pin guiding slot 13 and the through hole 211, the surface of the pin 82 and the first and second clamping points 131 and 211 interfere with each other to be fixed on the base 1 and the first terminal 2, and meanwhile, the pin 82 and the first conductive portion 21 of the first terminal 2 are electrically connected and conducted to provide power for the light-emitting body 81 to emit light.

As shown in fig. 1 and 2, the housing 9 is a metal member, and has an opening 91 at the middle thereof for the key 7 to pass through. The cover 9 covers the top surface of the base 1, the fool-proof groove 12 and the key guide groove 14, and is fixed by the two blocks 17 to prevent the key 7 from separating from the base 1.

The manufacturing process of the light emitting switch 1000 of the present invention is specifically described with reference to fig. 2 and 5. In the present embodiment, a plurality of terminals are coated and fixed on the base 1 by the insert injection molding process, the welding portion S exposes the mounting surface M, the first, second and third guiding portions 21, 31 and 41 are exposed on the switch surface 111 of the receiving cavity 11, then the conductive elastic sheet 5 is placed in the receiving cavity 11, two of the contact pins 52 contact the second guiding portion 31, then the pressing block 6, the key 7 and the light emitting diode 8 are assembled together, the light emitting body 81 is first placed in the first receiving cavity 71, the pressing block 6 is then placed in and fixed to the second receiving cavity 72, so that the light emitting body 81 is surrounded by the key 7 and the pressing block 6 from top to bottom and cannot be separated from the key 7, then the assembled pressing block 6, the key 7 and the light emitting diode 8 are placed in the receiving cavity 11 together, the lower surface of the pressing block 6 is contacted with the central portion 51 of the conductive elastic sheet 5, the pins 82 pass through the pin guiding grooves 13 and the through holes 211 to be fixed with the base 1 and the first terminal 2, and the pin guiding the positive and negative electrodes 74 and the positive and negative electrodes of the two electrodes 82 of the light emitting diode 7 are correctly assembled from top to bottom, and the auxiliary key 7, and the auxiliary key 9 are then assembled together.

The state change of the light emitting switch 1000 before and after being pressed will be described with reference to fig. 5 to 10. In an initial state, as shown in fig. 5 to 7, two of the contact pins 52 of the conductive elastic sheet 5 are in contact with and electrically connected to the two second terminals 3, and the pins 82 are electrically connected to the two first terminals 2, so that the light emitting diode 8 is kept normally bright with a single color. When the light emitting switch 1000 needs to be triggered, an operator presses the key 7, the key 7 drives the pressing block 6 to move downwards, but the key 7 and the pressing block 6 always keep a distance from the light emitting diode 8 without contacting the light emitting diode 8, so that the light emitting diode 8 keeps still in the process of pressing the key 7, the pressing block 6 moving downwards presses the central part 51 of the conductive elastic sheet 5 downwards to apply pressure on the conductive elastic sheet 5, the conductive elastic sheet 5 is integrally deformed in a downward concave manner, and after the second protruding part 521 contacts the switch surface 111, the contact pins 52 are deformed in a warping manner by taking the second protruding part 521 as a fulcrum. When the light emitting switch 1000 is in the triggered state, as shown in fig. 8 to 10, the ends of the contact pins 52 tilt upward, so that the two contact pins 52 are separated from the second connection portion 31, the two second terminals 3 are electrically disconnected, and the central portion 51 is pressed down by the pressing block 6 and contacts the contact protrusion 411 of the third connection portion 41. When the operator does not press the key 7 any more, the key 7 and the pressing block 6 release the pressure on the conductive elastic sheet 5, the light emitting switch 1000 returns to the initial state, the conductive elastic sheet 5 returns to its original shape by its own elasticity, the contact pins 52 return to contact with the second conduction connection portions 31, the two second terminals 3 return to the electrical connection, the central portion 51 returns to the upward arch to be separated from the third conduction connection portions 41, and the pressing block 6 and the key 7 are pushed to the initial positions where they are not pressed. During the upward movement of the key 7 to return to the initial state, the light emitting diode 8 is kept distant from the key 7 without contacting each other.

In the present embodiment, the distance between the key 7 and the pressing block 6 and the led 8 is used as a preferred technical means for keeping the led 8 still, but in other embodiments, the led 8 is still kept still after the key 7 and the pressing block 6 are slightly contacted.

To sum up, the utility model discloses a luminous switch 1000 possesses following beneficial effect:

(1) The conductive elastic sheet 5, the pressing blocks 6 and the keys 7 are sequentially stacked, so that pressure generated by pressing the keys 7 is transmitted to the conductive elastic sheet 5 only through one pressing block 6, elements between the conductive elastic sheet 5 and the keys 7 are saved compared with the prior art, material cost is reduced, on the basis, the through hole 211 is formed in the first terminal 2, two pins 82 of the light-emitting diode 8 correspondingly penetrate through and are limited in the through hole 211, the realization and the positioning of the light-emitting diode 8 in the assembling process are facilitated, and the assembling difficulty of the light-emitting switch 1000 is reduced.

(2) When the second protruding portion 521 is flattened by multiple pressing, the first protruding portion 15 can be used as a deformation fulcrum of the contact arm located above the second protruding portion 521 instead of the second protruding portion 521, specifically, when the contact arm moves downward due to downward pressing of the key 7, even if the flat second protruding portion 521 cannot tilt the end of the contact portion, the contact arm contacts the first protruding portion 15 downward, the end of the contact arm can still tilt upward and separate from the second conductive portion 31 with the first protruding portion 15 as a fulcrum, and the two second terminals 3 cannot be electrically connected through the conductive elastic sheet 5, so that an electrical signal can be effectively switched.

(3) At least one fool-proof rib 74 is arranged on the periphery of the key 7, and at least one fool-proof groove 12 for accommodating the fool-proof rib 74 is correspondingly arranged on the base 1, so that the positive and negative poles of the two pins 82 of the light-emitting diode 8 which is assembled with the key 7 in advance can be correctly connected with the positive and negative poles of the two first terminals 2 correspondingly, and the error of the assembling direction is avoided.

(4) The pin 82 penetrates through the pin guide groove 13 and the through hole 211 simultaneously, so that the pin 82 interferes with the first clamping point 131 in the pin guide groove 13 and the second clamping point in the through hole 211, the pin 82 is fixed on the base 1 and the first terminal 2, and the pin 82 and the whole light emitting diode 8 can be accurately positioned.

(5) The pressing block 6 is an elastic body, and when the pressing block is in an initial state, the distance D4 between the pressing block 6 and the switch surface 111 is smaller than the distance D3 between the limiting bump 75 and the boss 141, so that a better pressing hand feeling can be provided.

(6) Before the conductive elastic sheet 5 is pressed down, the height of the conductive elastic sheet 5 relative to the switch surface 111 is smaller than that of the boss 141 relative to the switch surface 111, so that the conductive elastic sheet 5 can be prevented from being pressed excessively.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, so that all the modifications of the equivalent technology using the contents of the specification and drawings of the present invention are included in the scope of the present invention.

Claims (10)

1. A luminescent switch, comprising:

a base having a switch surface;

the plurality of terminals are fixed on the base and comprise two first terminals, and the first terminals are provided with a first connecting part exposed out of the switch surface;

the conductive elastic sheet is positioned above the switch surface;

the pressing block is positioned above the conductive elastic sheet;

the key is positioned above the pressing block and provided with a first accommodating groove positioned in the key, the key is also provided with two through grooves, each through groove penetrates through the key along the horizontal direction and is communicated with the first accommodating groove, the conductive elastic sheet, the pressing block and the key are sequentially stacked from bottom to top, and the key and the pressing block can move up and down relative to the base together to apply pressure to the conductive elastic sheet or relieve pressure;

the light-emitting diode is provided with a light-emitting body and two pins connected with the light-emitting body, the light-emitting body is positioned in the first accommodating groove, each pin penetrates through one of the through grooves, and the light-emitting diode keeps static relative to the base when the key moves up and down;

the method is characterized in that: the two first conductive parts are respectively provided with a through hole, each pin penetrates through one of the through holes, and each pin is limited in the corresponding through hole and is electrically connected with the inner wall of the through hole.

2. The illuminated switch of claim 1, wherein: the key is provided with a second containing groove, the second containing groove is positioned below the first containing groove, the width of the second containing groove along the horizontal direction is larger than that of the first containing groove, and the pressing block is always fixed in the second containing groove and positioned below the light-emitting body.

3. The illuminated switch of claim 2, wherein: the outer side surface of the key is provided with at least one fool-proof convex rib, the base is provided with at least one fool-proof groove, and the fool-proof convex rib is contained in the fool-proof groove.

4. The illuminated switch of claim 1, wherein: the base is provided with two first protruding parts protruding from the switch surface, a yielding groove is formed between the two first protruding parts, the terminals comprise two second terminals, each second terminal is provided with a second guide connection part exposed out of the switch surface, the conductive elastic sheet is provided with at least two contact pins, the lower surface of each contact pin is provided with a second protruding part, the two first protruding parts are positioned below one contact pin, the yielding groove is positioned under the corresponding second protruding part, the protruding height of the second protruding part is larger than the depth of the yielding groove, the two contact pins are kept in contact with the two second guide connection parts before the key is pressed downwards, the pressure of the pressed key is conducted to the conductive elastic sheet to enable the conductive elastic sheet to be elastically deformed, the second protruding part enters the yielding groove and abuts against the switch surface, and the contact pins are warped and separated from the second guide connection parts.

5. The illuminated switch of claim 1, wherein: the plurality of terminals further comprise a third terminal, the third terminal is provided with a third conducting part exposed out of the switch surface, the third conducting part is positioned below the center of the conductive elastic sheet and is used for being contacted with the conductive elastic sheet deformed downwards, the third terminal is further provided with two embedded parts positioned at two lengthwise ends of the third conducting part, and the two embedded parts are embedded in the base.

6. The illuminated switch of claim 1, wherein: the base is also provided with a pin guide groove which extends up and down, the pin is inserted into the through hole from top to bottom through the pin guide groove, and one part of the pin, which is positioned above the through hole, is contained in the pin guide groove.

7. The illuminated switch of claim 6, wherein: the base is provided with a plurality of first clamping points positioned in the pin guide groove, the first guide connection part is provided with a plurality of second clamping points positioned in the through hole, and the pin is fixed by mutual interference of the first clamping points and the second clamping points.

8. The illuminated switch of claim 1, wherein: the base is provided with an accommodating cavity, the conductive elastic sheet, the pressing block and the key are accommodated in the accommodating cavity, the switch surface serves as the bottom surface of the accommodating cavity, the outer side surface of the key is provided with at least one limiting lug, the limiting lug extends to the bottom surface of the key, the base is provided with at least one boss, the boss is located in the accommodating cavity and higher than the switch surface, and the limiting lug is located right above the corresponding boss.

9. The illuminated switch of claim 8, wherein: the pressing block is an elastic body, and the distance between the pressing block and the switch surface is smaller than the distance between the limiting convex block and the boss.

10. The illuminated switch of claim 8, wherein: the conductive elastic sheet is provided with a central part which is arched upwards, and before the key is pressed down, the height of the central part relative to the switch surface is smaller than that of the lug boss relative to the switch surface.

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