CN113451064B

CN113451064B - Push button switch

Info

Publication number: CN113451064B
Application number: CN202110768580.9A
Authority: CN
Inventors: 章卫军; 张希伟; 刘金辉; 罗特苗; 殷连杰; 马帅
Original assignee: Gongniu Group Co Ltd
Current assignee: Gongniu Group Co Ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2023-05-12
Anticipated expiration: 2041-07-07
Also published as: CN113451064A

Abstract

The present disclosure provides a push button switch, which belongs to the field of electrical equipment. The button switch comprises a switch main body and a button, wherein the switch main body is at least partially positioned in a space where the button extends downwards; the switch main body comprises a base, a conducting strip assembly, a pressing locking mechanism, a first conducting spring and a second conducting spring; the conducting strip assembly is arranged on the base in a penetrating way; the pressing locking mechanism is inserted into the base, and the button can be movably connected with the pressing locking mechanism to control the on-off of the circuit; the first conductive spring is sleeved outside the pressing locking mechanism and is electrically connected with the conductive sheet component; the second conductive spring is inserted in the base and is electrically connected to the conductive sheet assembly. When setting up light emitting device, can carry out the electricity with light emitting device and first conductive spring and second conductive spring and be connected, make light emitting device can directly get the electricity from the conducting strip subassembly, need not extra welding cable, the automation equipment of this button switch of being convenient for is favorable to improving production efficiency.

Description

Push button switch

Technical Field

The present disclosure relates to the field of electrical devices, and in particular, to a push button switch.

Background

A push button switch is a switching device that is triggered by pressing. The push button switch includes a switch body and a push button which is connected to the switch body and can be pushed or sprung with respect to the switch body.

In the related art, the button includes a key cap, a through hole is generally provided at the top of the key cap, and a light emitting device such as a light emitting diode is disposed in the through hole, and the light emitting diode is electrically connected with the inside of the switch body. When the button is in a pressed state, the light emitting diode is turned on to emit light, and when the button is in a sprung state, the light emitting diode is turned off. The state of the push-button switch can be intuitively determined by the lighting or non-lighting of the light-emitting diode.

In the related art, when the light emitting device is electrically connected with the inside of the switch main body, an additional cable is generally required, and the cable is introduced into the inside of the switch main body to be welded, which is troublesome and inconvenient to assemble.

Disclosure of Invention

The embodiment of the disclosure provides a push button switch, which can facilitate the assembly of the push button switch and improve the production efficiency. The technical scheme is as follows:

the disclosed embodiments provide a push button switch comprising a switch body and a push button, the switch body being at least partially located in a space in which the push button extends downward;

the switch main body comprises a base, a conducting strip assembly, a pressing locking mechanism, a first conducting spring and a second conducting spring;

the conducting strip assembly is arranged on the base in a penetrating manner;

the pressing locking mechanism is inserted into the base, and the button can be movably connected with the pressing locking mechanism to control the on-off of the circuit;

the first conductive spring is sleeved outside the pressing locking mechanism and is electrically connected with the conductive sheet assembly; the second conductive spring is inserted into the base and is electrically connected with the conductive sheet component.

Optionally, an end of the first conductive spring away from the button has an extension portion, the extension portion extending along an axial direction of the first conductive spring, the extension portion being at least partially located within the base and electrically connected with the conductive sheet assembly.

Optionally, the button switch further includes a light emitting device, the light emitting device is located in a space where the button extends downward, the light emitting device includes a circuit board and a first light emitting device, the first light emitting device is located on a surface of the circuit board away from the switch main body and connected with the circuit board, and the circuit board is connected with the button.

Optionally, a surface of the circuit board, which is close to the switch main body, is provided with a first conductive pattern and a second conductive pattern, wherein the first conductive pattern is in electrical contact with the first conductive spring, and the second conductive pattern is in electrical contact with the second conductive spring.

Optionally, the button includes a key cap and a light guide, wherein a top wall of the key cap has a light hole, and the light guide is located in the key cap and is partially located in the light hole;

the light emitting device is positioned at one side of the light guide member close to the switch main body.

Optionally, the light guide member includes a plate body and a protruding portion, the protruding portion is located on the first face of the plate body, and the protruding portion is inserted into the light hole.

Optionally, the protruding portion is located at an edge of the plate body, and an orthographic projection of the protruding portion on the first face of the plate body is located at least partially outside the plate body;

the inner side wall of the key cap is provided with a limiting groove, and the protruding part is positioned in the limiting groove.

Optionally, the plate body has a positioning hole, and a positioning protrusion is provided on the inner side of the top wall of the key cap, and the positioning protrusion is located in the positioning hole.

Optionally, the light guide piece further includes two guide portions, the guide portions are located on a second face of the plate body, the second face is a surface of the light guide piece opposite to the first face, and the two guide portions are located on two opposite sides of the plate body and are perpendicular to the second face of the plate body;

the outer side wall of the base is provided with two guide grooves, the extending direction of the guide grooves is the same as the pressing direction of the button, the two guide grooves are in one-to-one correspondence with the two guide parts, and the guide parts are located in the corresponding guide grooves.

Optionally, the second surface of the plate body is provided with a plurality of buckles;

the circuit board is positioned on the second surface of the board body and is clamped with the buckle.

Optionally, at least part of the area of the button is made of a light-guiding material.

In another aspect, embodiments of the present disclosure also provide another push button switch including a switch body at least partially located in a space in which the push button extends downward, a push button, and a light emitting device;

the switch main body comprises a base, a conducting strip assembly and a pressing locking mechanism;

the conducting strip assembly is arranged on the base in a penetrating manner;

the light emitting device is inserted into the base and is electrically connected with the conducting strip assembly.

The technical scheme provided by the embodiment of the disclosure has the beneficial effects that at least:

through setting up first conductive spring and second conductive spring in button switch, with first conductive spring cover outside pressing locking mechanism, with second conductive spring cartridge in the base, utilize first conductive spring and second conductive spring to be connected with the conducting strip subassembly electricity in the base. When the button is pressed, the button switch is turned on, and meanwhile, the first conductive spring and the second conductive spring are also connected into the circuit, so that when the light emitting device for indicating the state of the button switch is arranged, the light emitting device is connected with the first conductive spring and the second conductive spring, and when the button switch is turned on, the light emitting device is also turned on, so that the state of the button switch can be accurately indicated. Because the first conductive spring and the second conductive spring directly take electricity from the conductive sheet component, no additional welding cable is needed, the assembly of the button switch is convenient, and the production efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural view of a push button switch according to an embodiment of the present disclosure;

fig. 2 is an exploded view of a switch body according to an embodiment of the present disclosure;

FIG. 3 is an assembled schematic view of a key cap and light guide provided by an embodiment of the present disclosure;

FIG. 4 is a schematic view of an assembly of a key cap and a light guide provided by an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of an assembly of a light guide and a circuit board provided by an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of the connection of a light guide and a circuit board provided by an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a stationary contact and a movable contact according to an embodiment of the present disclosure;

fig. 8 is an exploded view of a switch body according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of another push button switch provided by an embodiment of the present disclosure;

fig. 10 is an installation schematic diagram of a second light emitting device provided in an embodiment of the present disclosure;

fig. 11 is an installation schematic diagram of a pressing locking mechanism provided in an embodiment of the present disclosure.

Detailed Description

For the purposes of clarity, technical solutions and advantages of the present disclosure, the following further details the embodiments of the present disclosure with reference to the accompanying drawings.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," "third," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.

Fig. 1 is a schematic structural diagram of a push button switch according to an embodiment of the present disclosure. As shown in fig. 1, the push button switch includes a switch body 10 and a push button 20. The button 20 is connected to the switch body 10, and the button 20 can be pushed down or sprung up with respect to the switch body 10. The switch body 10 is at least partially located in a space where the button 20 extends downward. The space in which the button 20 extends downward means a cylindrical space formed by the contour of the button 20 extending in the direction in which the button 20 is pressed on the side of the button 20 near the switch body 10.

Fig. 2 is an exploded view of a switch body according to an embodiment of the present disclosure. As shown in fig. 2, the switch body 10 includes a base 11, a conductive sheet assembly 12, a pressing lock mechanism 13, a first conductive spring 14, and a second conductive spring 15. The conductive sheet assembly 12 is mounted through the base 11. The pressing locking mechanism 13 is inserted into the base 11, and the button 20 can be movably connected with the pressing locking mechanism 13 to control the on-off of a circuit. The first conductive spring 14 is sleeved outside the pressing locking mechanism 13, and the first conductive spring 14 is electrically connected to the conductive sheet assembly 12. The second conductive spring 15 is inserted into the base 11, and the second conductive spring 15 is electrically connected to the conductive sheet assembly 12.

Through setting up first conductive spring and second conductive spring in button switch, with first conductive spring cover outside pressing locking mechanism, with second conductive spring cartridge in the base, utilize first conductive spring and second conductive spring to be connected with the conducting strip subassembly electricity in the base. When the button is pressed, the button switch is turned on, and meanwhile, the first conductive spring and the second conductive spring are also connected into the circuit, so that when the light emitting device for indicating the state of the button switch is arranged, the light emitting device is connected with the first conductive spring and the second conductive spring, and when the button switch is turned on, the light emitting device is also turned on, so that the state of the button switch can be accurately indicated. Because the first conductive spring and the second conductive spring directly take electricity from the conductive sheet component, no additional welding cable is needed, the button switch is convenient to assemble, the production efficiency is improved, and the production efficiency is improved.

As shown in fig. 1, the push button switch further includes a light emitting device 23, and the light emitting device 23 is located in a space where the push button 20 extends downward. Also shown in fig. 2 is a light emitting device 23 so as to display the relationship of the switch body 10 and the light emitting device 23. Referring to fig. 2, the light emitting device 23 is electrically connected with the first conductive spring 14 and the second conductive spring 15. By providing the light emitting device 23, the light emitting device 23 is electrically connected with the two conductive springs for indicating the state of the key switch.

The button 20 includes a key cap 21 and a light guide 22, the top wall of the key cap 21 has a light transmission hole 21a, and the light guide 22 is located in the key cap 21 and partially located in the light transmission hole 21 a.

The light emitting device 23 is located at a side of the light guide 22 near the switch body 10, the light emitting device 23 is opposite to the light guide 22, and the light emitting device 23 is used for irradiating the light guide 22.

The light guide piece is arranged in the key cap to form the button, and the top wall of the key cap is provided with the light hole, so that the light guide piece is partially positioned in the light hole, and when the light emitted by the light emitting device for indicating the state in the button switch irradiates the light guide piece, the light is emitted at the light hole to indicate the state of the button. When the structure of the switch main body is designed, only the light emitting device can irradiate the light guide piece, so that the switch main body can be matched more easily. Even if the design of the switch main body is changed, the structure of the key cap does not need to be changed greatly, and a new die does not need to be designed, so that the production period and the cost are reduced.

In other examples, at least a portion of the area of the button 20 is made of a light-conducting material. The light emitting device 23 is used to illuminate a portion of the button 20 made of a light guiding material. For example, the button 20 is made of a light-guiding material, and when light emitted from the light-emitting device 23 irradiates the button 20, the button 20 is illuminated to indicate the state of the button switch. The embodiment of the present disclosure is explained taking a structure in which the button 20 includes the key cap 21 and the light guide 22 as an example.

Fig. 3 is an assembly schematic diagram of a key cap and a light guide provided in an embodiment of the present disclosure. As shown in fig. 3, the key cap 21 includes a top wall 211 and a side wall 212, and a cylindrical structure having a closed top end and an open bottom end is formed by the top wall 211 and the side wall 212. The light guide 22 is located in a space surrounded by the top wall 211 and the side walls 212.

The light transmission hole 21a is located at the top wall 211 of the key cap 21. The number of the light holes 21a may be one, or may be two or more, and in the embodiment of the disclosure, the top wall 211 has one light hole 21a as an example. In the embodiment of the present disclosure, the light transmitting holes 21a are located at edge positions of the top wall 211.

As shown in fig. 3, the light guide 22 includes a plate body 221 and a boss 222. The boss 222 is located on a first face 221a of the plate body 221, the plate body 221 has opposite first and

second faces

221a and 221b, and the boss 222 is located on a face of the plate body 221 adjacent to the top wall of the key cap 21. The boss 222 is inserted in the light-transmitting hole 21 a.

The plate body 221 has a larger volume and a larger surface area than the boss 222. When the light emitted from the light emitting device irradiates the plate body 221, the light propagates in the plate body 221 and reaches the boss 222, so that when the observer observes the boss 222 from the outside of the key cap 21, the boss 222 is seen to be lit up, which plays a role of indicating the state of the push button switch. The protruding portion 222 is inserted into the light hole 21a, and can also play a certain fixing role and limiting role on the light guide member 22, so that the light guide member 22 and the key cap 21 are connected more firmly.

The cross-sectional shape of the boss 222 is identical to the shape of the light-transmitting hole 21 a. In the embodiment of the present disclosure, the light hole 21a is rectangular in shape, and the cross section of the boss 222 is also rectangular. In other examples, the light-transmitting holes 21a may also take other shapes, such as a circle, an ellipse, etc., and the cross-section of the protruding portion 222 is also set to be a circle or an ellipse, respectively.

As shown in fig. 3, the protruding portion 222 is located at an edge of the plate body 221, and an orthographic projection of the protruding portion 222 on the first surface 221a of the plate body 221 is at least partially located outside the plate body 221. That is, the convex portion 222 protrudes outward with respect to the side edge of the plate body 221 in a direction parallel to the plate body 221.

The inner sidewall of the key cap 21 has a limiting groove 21b, and the protrusion 222 is partially located in the limiting groove 21b.

Since the protruding portion 222 protrudes outwards relative to the side edge of the plate body 221, and the limiting groove 21b is formed in the inner side wall of the key cap 21, when the button 20 is assembled, the protruding portion 222 is matched with the limiting groove 21b by sliding the protruding portion 222 into the limiting groove 21b, and the protruding portion 222 is limited by the limiting groove 21b, so that the light guide 22 can be installed stably.

Fig. 4 is a schematic view of an assembly of a key cap and a light guide provided by an embodiment of the present disclosure. As shown in fig. 4, the plate body 221 further has a positioning hole 221c, and the inside of the top wall of the key cap 21 has a positioning protrusion 2111, and the positioning protrusion 2111 is located in the positioning hole 221 c.

When the light guide 22 is mounted in the key cap 21, the positioning protrusions 2111 extend into the positioning holes 221c to form a fit with the positioning holes 221c, so that the light guide 22 is mounted more firmly, and loosening of the light guide 22 is avoided.

The positioning holes 221c and the positioning protrusions 2111 are arranged in a one-to-one correspondence, and the number of the positioning holes 221c may be one, or may be two or more, and in the embodiment of the present disclosure, one positioning hole 221c is taken as an example.

The positioning hole 221c is a through hole, and the height of the positioning protrusion 2111 may be smaller than the thickness of the plate body 221, or may be equal to or larger than the thickness of the plate body 221.

As shown in fig. 3, the light guide 22 further includes two guide portions 223. The plate body 221 has a first surface 221a and a second surface 221b opposite to each other, wherein the protrusion 222 is located on the first surface 221a of the plate body 221, and the guide 223 is located on the second surface 221b of the plate body 221.

The two guide portions 223 are located at opposite sides of the plate body 221 and are perpendicular to the second surface 221b of the plate body 221.

Referring to fig. 1, the outer side wall of the switch body 10 has two guide grooves 10a, the extending direction of the guide grooves 10a is the same as the pressing direction of the push button 20, the two guide grooves 10a are in one-to-one correspondence with the two guide portions 223, and the guide portions 223 are located in the corresponding guide grooves 10 a.

When the push button 20 is mounted to the switch body 10, the two guide portions 223 are inserted into the guide grooves 10a, and the guide portions 223 are engaged with the guide grooves 10 a. When the button 20 is pressed, the guide portion 223 slides in the guide groove 10a, so that the button 20 can be smoothly pressed and sprung.

The guide portion 223 has a rod shape, and the length of the guide portion 223 is longer than the stroke of the button 20, and the stroke of the button 20 is a range of change in position when the button 20 is changed between the pressed state and the sprung state. Thereby preventing the guide portion 223 from being removed from the guide groove 10a during the operation of the button 20.

As shown in fig. 2, the light emitting device 23 includes a circuit board 230 and a first light emitting device 231, the first light emitting device 231 is located on a side of the circuit board 230 remote from the switch body 10 and is connected to the circuit board 230, and the circuit board 230 is connected to the button 20. The first light emitting device 231 is integrated on the circuit board 230 and directly disposed in the push button 20, which is advantageous in reducing the volume of the push button switch. The first light emitting device 231 may be a light emitting diode, for example.

Fig. 5 is an assembled schematic view of a button and a circuit board provided in an embodiment of the present disclosure. As shown in fig. 5, the plate 221 further has a plurality of snaps 224. The protrusion 222 is located on the first surface 221a of the plate body 221, and the catch 224 is located on the second surface 221b of the plate body 221. The circuit board 230 is located on the second surface 221b of the board body 221, and the circuit board 230 is clamped with the buckle 224.

The circuit board 230 is directly connected with the light guide 22 by the buckle 224, so that the push button switch has compact structure, convenient assembly and convenient automatic production.

As shown in fig. 5, the circuit board 230 further has a limiting hole 23a thereon. Fig. 6 is a schematic connection diagram of a light guide and a circuit board according to an embodiment of the present disclosure. As shown in fig. 6, the surface of the board body 221, which is close to the circuit board 230, is further provided with a limiting boss 225, and the limiting boss 225 is located in the limiting hole 23a to limit the circuit board 230.

As shown in fig. 6, the side of the circuit board 230 remote from the board body 221, that is, the side near the switch main body 10, has a first conductive pattern 2301 and a second conductive pattern 2302. The first conductive pattern 2301 and the second conductive pattern 2302 are exposed conductive structures, such as metal sheets, on the surface of the circuit board 230. The first conductive pattern 2301 and the second conductive pattern 2302 are connected to the first light emitting device 231 on the circuit board 230.

Illustratively, the first conductive pattern 2301 is annular and the second conductive pattern 2302 is rectangular.

Alternatively, the first conductive pattern 2301 and the second conductive pattern 2302 are located at both sides of the limit hole 23a on the circuit board 230. The limiting boss 225 on the light guide 22 can separate the first conductive pattern 2301 and the second conductive pattern 2302 to avoid short circuit.

The first conductive spring 14 is in electrical contact with the first conductive pattern 2301, and the second conductive spring 15 is in electrical contact with the second conductive pattern 2302. The first conductive spring 14 and the second conductive spring 15 can maintain contact with the circuit board under the elastic force. After the circuit board 230 is connected with the light guide 22, the limiting boss 225 on the light guide 22 can separate the first conductive spring 14 and the second conductive spring 15, so as to avoid the first conductive spring 14 and the second conductive spring 15 from being in contact and short circuit.

Referring again to fig. 2, the base 11 includes a lower case 111 and an upper case 112, and the lower case 111 and the upper case 112 are coupled to form a receiving chamber. The conductive sheet assembly 12 is installed on the base 11 in a penetrating manner, which means that the conductive sheet assembly 12 is partially located in the accommodating cavity inside the base 11 and partially located outside the accommodating cavity inside the base 11.

The conductive sheet assembly 12 includes a stationary contact 121, a movable contact 122, and a stationary contact 123. The stationary contact 121 is fixed in the base 11 and partially protrudes outside the base 11 to connect wires. The movable contact 122 is fixed in the base 11 and also partially protrudes outside the base 11 to connect the wires. A portion of the movable contact 122 located in the base 11 can be deformed by an external force to contact the stationary contact 121, so that the push-button switch is turned on. The fixed contact 123 is fixed in the base 11 and also partially protrudes outside the base 11 to connect the wires.

Illustratively, the stationary contact 121 and the movable contact 122 are connected in series to the live wire, and the portion of the stationary contact 121 located outside the base 11 and the portion of the movable contact 122 located outside the base 11 are respectively connected to the live wire, and after the movable contact 122 is deformed and contacts the stationary contact 121, the live wire is turned on. The portion of the fixed contact 123 located outside the base 11 is connected to a neutral line, which functions to enable the circuit board 230 to be connected to a circuit, see in particular the description of the operation of the first light emitting device 231 hereinafter.

Fig. 7 is a schematic structural diagram of a stationary contact and a movable contact according to an embodiment of the present disclosure. As shown in fig. 7, a stationary contact 1211 is provided on the stationary contact 121, and a movable contact 1221 is provided on the movable contact 122, and after the movable contact 122 is deformed, the movable contact 1221 contacts the stationary contact 1211. The stationary contact 1211 and the movable contact 1221 are both silver contacts, and metallic silver has good conductivity, so that the resistance between the stationary contact 1211 and the movable contact 1221 is low, and the risk of over-high temperature at the contact position of the stationary contact 1211 and the movable contact 1221 is avoided.

Alternatively, stationary contact 1211 is welded to stationary contact 121 and movable contact 1221 is welded to movable contact 122. By adopting the welding mode to set the fixed contact 1211 and the movable contact 1221, the fixed contact 1211 and the fixed contact 121 can have larger contact area, so that good contact is formed, the movable contact 1221 and the movable contact 122 have larger contact area, and the problem that local resistance is too large due to too small contact area, and local temperature is too high is avoided.

As shown in fig. 2, the base 11 has a first insertion hole 112a and a second insertion hole 112b. In the disclosed embodiment, the first and

second receptacles

112a and 112b are both located in the upper housing 112.

The pressing lock mechanism 13 is inserted into the first insertion hole 112a, and one end of the pressing lock mechanism 13 is located outside the base 11, and one end of the pressing lock mechanism 13 located outside the base 11 is connected to the button 20.

Pressing the lock mechanism 13 allows the button 20 to be locked after being pressed in a sprung state, thereby holding in a pressed state and causing the movable contact 1221 to be held in contact with the stationary contact 1211. After the button 20 is pressed again and released, the button 20 can pop up, return to the popped up state, and separate the movable contact 1221 from the stationary contact 1211.

The first conductive spring 14 is sleeved outside the pressing locking mechanism 13, one end of the first conductive spring 14 abuts against the circuit board 230, and the other end of the first conductive spring 14 abuts against the base 11. The first conductive spring 14 is in electrical contact with the circuit board 230 and the conductive pad assembly 12, respectively. In the disclosed embodiment, the first conductive spring 14 is in electrical contact with the stationary contact 121.

The second conductive spring 15 is inserted into the second insertion hole 112b, and one end of the second conductive spring 15 abuts against the circuit board 230, the other end abuts against the conductive sheet assembly 12, and the second conductive spring 15 is respectively in electrical contact with the circuit board 230 and the conductive sheet assembly 12. In the disclosed embodiment, the second conductive spring 15 is in electrical contact with the fixed contact 123.

The first and second

conductive springs

14, 15 enable the button 20 to maintain the circuit board 230 in contact with the conductive pad assembly 12 during pressing. When the movable contact 1221 and the stationary contact 1211 are contacted, the circuit is completed, and the first conductive spring 14 and the second conductive spring 15 connect the circuit board 230 into the circuit, so that the first light emitting device 231 on the circuit board 230 is energized to emit light. In the embodiment of the disclosure, the first conductive spring 14 is electrically contacted with the static contact 121, the second conductive spring 15 is electrically contacted with the fixed contact 123, after the movable contact 1221 is contacted with the static contact 1211, the current passes through the movable contact 122, the static contact 121 and the first conductive spring 14 from the live wire to the circuit board 230, and then passes through the second conductive spring 15 and the fixed contact 123 from the circuit board 230 to the zero line to form a loop, so that the first light emitting device 231 on the circuit board 230 is electrified to emit light.

Fig. 8 is an exploded view of a switch body according to an embodiment of the present disclosure. Fig. 2 and 8 show opposite sides of the switch body 10. As shown in fig. 8, the end of the first conductive spring 14 away from the button 20 has an extension 141, the extension 141 extends along the axial direction of the first conductive spring 14, the extension 141 is at least partially located in the base 11, and the extension 141 is electrically connected to the conductive sheet assembly 12. In the disclosed embodiment, the extension 141 is electrically connected with the stationary contact 121.

During the pressing of the button 20, the extension 141 of the first conductive spring 14 is not deformed, and the portion of the first conductive spring 14 located between the circuit board 230 and the base 11 is deformed, so that the first conductive spring 14 maintains contact with the circuit board 230 and the conductive sheet assembly 12.

Fig. 9 is a schematic structural view of another push button switch provided in an embodiment of the present disclosure. As shown in fig. 9, the push button switch includes a switch body 10, a push button 20, and a light emitting device, the switch body 10 being at least partially located in a space where the push button 20 extends downward. The switch body 10 includes a base 11, a conductive sheet assembly 12, and a pressing lock mechanism 13. The conductive sheet assembly 12 is mounted through the base 11. Pressing locking mechanism 13 cartridge is in base 11, and button 20 swing joint is in pressing locking mechanism 13, and button 20 is used for the control circuit break-make. The light emitting device is inserted into the base 11, and the light emitting device is electrically connected to the conductive sheet assembly 12.

Through installing light emitting device and conducting strip subassembly in the base, with light emitting device and conducting strip subassembly electricity connection, light emitting device directly gets the electricity from the conducting strip subassembly, also does not need extra welding cable, and the automation equipment of this button switch of being convenient for is favorable to improving production efficiency.

In the push button switch, the housing 11 has a first insertion hole 112a and a third insertion hole 112c. The first and

third insertion holes

112a and 112c are located at the upper housing 112. The pressing lock mechanism 13 is inserted in the first insertion hole 112 a. In the push button switch, the conductive sheet assembly 12 also includes a stationary contact 121, a movable contact 122, and a stationary contact 123. The push lock mechanism 13 in the push switch is the same as the push lock mechanism 13 in the push switch shown in fig. 1, and the conductive sheet assembly 12 is the same as the conductive sheet assembly 12 in the push switch shown in fig. 1.

As shown in fig. 9, in the push button switch, the light emitting device includes a second light emitting device 16. The second light emitting device 16 is inserted into the third insertion hole 112c and is electrically connected to the conductive sheet assembly 12. The button 20 may also include a key cap 21 and a light guide 22. The second light emitting device 16 is opposite to the light guide 22. Fig. 10 is an installation schematic diagram of a second light emitting device provided in an embodiment of the present disclosure. Only the lower case 111, the conductive sheet assembly 12, and the second light emitting device 16 are shown in fig. 10. As shown in fig. 10, the second light emitting device 16 has a first terminal 161 and a second terminal 162. The first terminal 161 is electrically connected to the stationary contact 121, and the second terminal 162 is electrically connected to the stationary contact 123.

With the push button switch shown in fig. 9, after the push button 20 is pressed, the movable contact 1221 is brought into contact with the stationary contact 1211, and the second light emitting device 16 is turned on. Since the second light emitting device 16 is opposite to the light guide 22, the light emitted from the second light emitting device 16 directly irradiates the light guide 22, and the light propagates to the protrusion 222 in the light guide 22, so that when the observer observes the protrusion 222 from the outside of the key cap 21, the observer sees that the protrusion 222 is lighted up, and the function of indicating the state of the push button switch is achieved.

In the push button switch shown in fig. 9, the second light emitting device 16 is directly mounted in the base 11, so that the circuit board 230 is not required to be provided in the push button 20, further simplifying the structure of the push button 20 and making the push button 20 simpler, compared to the push button switch shown in fig. 1.

Optionally, the second light emitting device 16 is a light emitting diode. The light emitting diode has the advantages of small size, high brightness, low power consumption and long service life, and is suitable for being installed in the switch main body 10 to be used as an indicator lamp.

Fig. 11 is an installation schematic diagram of a pressing locking mechanism provided in an embodiment of the present disclosure. As shown in fig. 11, the pressing lock mechanism 13 includes an upper push rod 131, a lower push rod 132, and a return spring 133, and both the upper push rod 131 and the lower push rod 132 are cylindrical. The upper push rod 131 is coaxially sleeved outside the lower push rod 132. One end of the return spring 133 is inserted into the lower push rod 132, the other end of the return spring 133 abuts against the movable contact piece 122, and one end of the upper push rod 131, which is far away from the return spring 133, abuts against the button 20.

The outer wall of the upper push rod 131 has a plurality of first protrusions 1311, the outer wall of the lower push rod 132 has a plurality of second protrusions 1321, and the inner wall of the first insertion hole 112a has a guide rail groove 112d. The first bump 1311 and the second bump 1321 are located in the rail groove 112d. The upper push rod 131, the lower push rod 132 and the guide rail groove 112d cooperate to constitute a ratchet mechanism. When the push button 20 is pressed, the push button 20 pushes the upper push rod 131 to move, the upper push rod 131 pushes the lower push rod 132 to compress the return spring 133, and the lower push rod 132 is circumferentially rotated by a certain angle in cooperation with the guide rail groove 112d under the cooperation of the second protrusion 1321, and then is locked with the guide rail groove 112d, so that the push button 20 is maintained in a pressed state. After the button 20 is pressed again, the upper push rod 131 pushes the lower push rod 132 to move a certain distance, the lower push rod 132 rotates a certain angle along the circumferential direction again, the locking is released from the guide rail groove 112d, after the button 20 is released, the locking mechanism 13 is pressed to spring up under the elasticity of the return spring 133, and the button 20 is changed from the pressed state to the spring-up state.

The structure of the pressing lock mechanism 13 shown in fig. 11 is merely an example, and the structure of the pressing lock mechanism 13 may be the same as that in the related art, and will not be described in detail here.

The foregoing description of the preferred embodiments of the present disclosure is provided for the purpose of illustration only, and is not intended to limit the disclosure to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and principles of the disclosure.

Claims

1. A push button switch, characterized by comprising a switch body (10), a light emitting device (23) and a push button (20), said switch body (10) being at least partially located in a space where said push button (20) extends downwards;

the switch main body (10) comprises a base (11), a conductive sheet assembly (12), a pressing locking mechanism (13), a first conductive spring (14) and a second conductive spring (15);

the conducting strip assembly (12) is installed on the base (11) in a penetrating mode;

the pressing locking mechanism (13) is inserted into the base (11), and the button (20) can be movably connected with the pressing locking mechanism (13) to control the on-off of a circuit;

the first conductive spring (14) is sleeved outside the pressing locking mechanism (13), and the first conductive spring (14) is electrically connected to the conductive sheet assembly (12); the second conductive spring (15) is inserted into the base (11), and the second conductive spring (15) is electrically connected to the conductive sheet assembly (12);

the light emitting device (23) is positioned in the downward extending space of the button (20) and is electrically connected with the first conductive spring (14) and the second conductive spring (15);

the button (20) comprises a key cap (21) and a light guide piece (22), wherein a light transmission hole (21 a) is formed in the top wall of the key cap (21), and the light guide piece (22) is positioned in the key cap (21) and is partially positioned in the light transmission hole (21 a);

the light emitting device (23) is located on one side, close to the switch main body (10), of the light guide piece (22), the light guide piece (22) comprises a plate body portion (221) and a protruding portion (222), the protruding portion (222) is located on a first face (221 a) of the plate body portion (221), and the protruding portion (222) is inserted into the light-transmitting hole (21 a).

2. The push button switch according to claim 1, wherein an end of the first conductive spring (14) remote from the push button (20) has an extension (141), the extension (141) extending in an axial direction of the first conductive spring (14), the extension (141) being at least partially located within the base (11) and electrically connected to the conductive sheet assembly (12).

3. The push button switch according to claim 1, wherein the light emitting device (23) comprises a circuit board (230) and a first light emitting device (231), the first light emitting device (231) is located on a surface of the circuit board (230) away from the switch main body (10) and is connected with the circuit board (230), the circuit board (230) is connected with the push button (20), a first conductive pattern (2301) and a second conductive pattern (2302) are located on a surface of the circuit board (230) close to the switch main body (10), the first conductive pattern (2301) is in electrical contact with the first conductive spring (14), and the second conductive pattern (2302) is in electrical contact with the second conductive spring (15).

4. A push button switch according to claim 3, wherein the protrusion (222) is located at an edge of the plate body (221), and an orthographic projection of the protrusion (222) on the first face (221 a) of the plate body (221) is located at least partially outside the plate body (221);

the inner side wall of the key cap (21) is provided with a limiting groove (21 b), and the protruding part (222) is partially positioned in the limiting groove (21 b).

5. A push button switch according to claim 3, wherein the plate body (221) has a positioning hole (221 c), and the top wall of the key cap (21) has a positioning protrusion (2111) on the inner side thereof, and the positioning protrusion (2111) is located in the positioning hole (221 c).

6. A push button switch according to claim 3, wherein the light guide (22) further comprises two guiding parts (223), the guiding parts (223) being located on a second face (221 b) of the plate body (221), the second face (221 b) being a surface of the light guide (22) opposite to the first face (221 a), the two guiding parts (223) being located at opposite sides of the plate body (221) and being perpendicular to the second face (221 b) of the plate body (221);

the outer side wall of the base (11) is provided with two guide grooves (10 a), the extending direction of the guide grooves (10 a) is the same as the pressing direction of the button (20), the two guide grooves (10 a) are in one-to-one correspondence with the two guide parts (223), and the guide parts (223) are positioned in the corresponding guide grooves (10 a).

7. The push button switch according to any one of claims 3 to 6, wherein the second face (221 b) of the plate body (221) has a number of catches (224);

the circuit board (230) is located on the second surface (221 b) of the board body (221) and is clamped with the buckle (224).

8. A push button switch according to any one of claims 1-6, wherein at least part of the area of the push button (20) is made of a light guiding material.