Thin key switch

Abstract

The utility model relates to the technical field of key switches, in particular to a thin key switch, which comprises a base, a switch contact piece, a wiring terminal, a rocker assembly and a switch surface cover, the switch contact piece and the wiring terminal are both mounted in the base, the rocker assembly and the switch surface cover are mounted on the base, and the switch surface cover and the rocker assembly are both rotationally connected with the base. The rocker assembly comprises an inner rocker, a switch shifting nozzle which is installed in the inner rocker and is connected with the inner rocker through an elastic piece, and a switch springboard which is installed on the base and abuts against the switch shifting nozzle, one end of the bottom face of the switch springboard is provided with a first switch contact, and the top face of the switch contact piece is provided with a second switch contact corresponding to the first switch contact; a lug plate is arranged on the top surface of the switch contact piece, the lug plate is formed by bending the middle part of the switch contact piece, and the wiring terminal is connected with the lug plate. The middle part of the switch contact piece is bent in the direction of the second switch contact to form the lug plate, so that the total height after the switch contact piece is connected with the wiring terminal is reduced, and the key switch can be thinner.

Description

Technical Field

[0001] The utility model relates to the technical field of key switches, and more particularly to a thin key switch. Background Art

[0002] Switch decoration is trending toward ultra-thin, low-angle, full-panel designs. To achieve this, current switches on the market typically employ a method of enlarging the swing arm angles on the cover and inner bend. For example, patent publication number CN114242504A describes a dual-rocker switch. This switch cover, without the aid of a conversion mechanism, allows the inner rocker to rotate at a very small angle to meet the requirements of the pull-switch spring. This allows the outer rocker to be enlarged without increasing the product's thickness. Eliminating the need for a conversion mechanism reduces the number of components and assembly steps required, simplifying the switch structure and reducing costs.

[0003] However, many existing switch thinning methods focus on the rocker or switch cover, without considering the thinning of other switch components. Furthermore, the aforementioned patent can only achieve the thinning of a single switch cover, and cannot achieve the thinning of multiple switch covers. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiency in the prior art that other components in a switch are not thinned, and to provide a thin push button switch in which switch contacts and connection terminals are thinned.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A thin push button switch is provided, comprising a base, a switch contact and a wiring terminal both mounted within the base, a seesaw assembly and a switch cover mounted on the base, the switch cover and the seesaw assembly both being rotatably connected to the base, the seesaw assembly comprising an inner seesaw, a switch paddle mounted within the inner seesaw and connected to the inner seesaw via an elastic member, and a switch spring mounted on the base and abutting the switch paddle, a first switch contact being provided at one end of a bottom surface of the switch spring, a second switch contact corresponding to the first switch contact being provided on a top surface of the switch contact, a wiring lug being provided on the top surface of the switch contact, the wiring lug being formed by bending a middle portion of the switch contact, and the wiring terminal being connected to the wiring lug.

[0007] In the above technical solution, the push switch is a straight push switch with the first and second switch contacts positioned. The terminal lug is formed by bending the middle portion of the switch contact, with the bending direction facing the top surface of the switch contact. Therefore, the terminal lug is located on the switch contact. When the terminal is connected to the terminal lug, the thickness of the terminal and the switch contact is the thickness of the terminal plus the switch contact. Compared with a conventional straight push switch, the thickness is reduced by the thickness of the second switch contact. By reducing the thickness of this location, the thickness of the entire switch base can be reduced, thereby making the entire switch thinner. Moreover, because the terminal lug is formed by bending the middle portion of the switch contact, material for the switch contact can be saved.

[0008] Preferably, the height of the connecting piece is smaller than that of the connecting terminal, so as to avoid interference caused by the protrusion of the connecting piece from the connecting terminal affecting the layout of components above the connecting terminal.

[0009] Preferably, the rocker assembly further comprises an adapter rocker with a clamping arm, a clamping portion provided on one side of the inner rocker, the clamping arm being connected to the clamping portion; a cavity being provided within the base, the adapter rocker and the inner rocker both being located within the cavity and being rotatably connected to the base; and the switch cover being snap-connected to the adapter rocker. The switch cover is rotatably connected to the base via the adapter rocker, which is located between the inner rocker and the switch cover, with the pivot point between the inner rocker and the base being located below the adapter rocker. Furthermore, the contact points between the clamping arm and the clamping portion and the pivot points between the inner rocker and the adapter rocker form a corresponding pivoting force difference, such that when the adapter rocker is rotated at a small angle, the inner rocker amplifies the pivoting angle due to the force difference, thereby enabling the switch toggle in the inner rocker to toggle the switch spring plate even when the switch cover is rotated at a small angle, thereby achieving a thin pushbutton switch. Based on this, the transfer rocker and the inner rocker are both accommodated in the cavity near the base, which can further reduce the part exposed from the base, and the switch cover can appear thinner in appearance.

[0010] Preferably, the transition rocker is provided with first pivoting axes on both sides, and second pivoting axes on both sides of the inner rocker. The base is provided with a support frame, which is provided with a first rotation hole and a second rotation hole, respectively connected to the first rotation axis and the second rotation axis. The first rotation hole is located directly below the second rotation hole, and the axes of the first and second rotation holes are aligned on the same vertical line. The axes of the first and second rotation holes are aligned on the same vertical line, so that the transition rocker and the inner rocker can be rotated without deflection or jamming.

[0011] Preferably, the switch cover is provided with a claw portion, and the transition rocker is provided with a clamping portion that is snap-connected to the claw portion. The claw portion of the switch cover can be inserted into the clamping portion, thereby achieving concealment in appearance and being more beautiful.

[0012] Preferably, the switch cover has at least three seesaw assemblies, and the number of the seesaw assemblies corresponds to the number of the switch cover. At least two of the seesaw assemblies are symmetrically arranged. Since the three switch cover are arranged side by side, the transfer seesaw also needs to occupy a certain volume in terms of width. Arranging them side by side in a single direction requires a larger width to ensure that the claw portions and the engaging portions match one to one. However, by arranging two of the seesaw assemblies symmetrically, that is, the engaging portions of the two transfer seesaws are close to each other, the corresponding claw portions can be gathered towards the center, and the three switch cover can be arranged in a smaller width.

[0013] Preferably, a raised portion is provided on the side of the switch spring plate at the end away from the first switch contact, and an abutment portion is provided on the bottom of the inner rocker plate for the raised portion to abut against. The first and second switch contacts may become stuck during use. If this happens, because the switch trigger is mounted within the inner rocker plate and connected by an elastic member, pressing the switch cover plate at this time will not produce sufficient elastic force to disengage the first and second switch contacts. Instead, the elastic member will be compressed, causing the switch trigger to retract into the inner rocker plate. Even after the switch cover plate is switched, the switch spring plate does not actually swing with it. With the raised portion and abutment portion provided, the switch trigger retracts into the inner rocker plate. Since the switch spring plate remains in place and does not move, the inner rocker plate swings toward the raised portion, causing the abutment portion to abut against the raised portion. As the inner rocker plate continues to swing, the force applied by the inner rocker plate to the raised portion forcibly disengages the first and second switch contacts.

[0014] Preferably, the distance from the inner surface of the raised portion to the center of the switch springboard is greater than or equal to the maximum diameter of the switch selector. The inner surface of the raised portion refers to the end surface closest to the switch springboard. The selector of a pushbutton switch abuts the center of the switch springboard. Therefore, by ensuring that the distance from the inner surface of the raised portion to the center of the switch springboard is greater than or equal to the maximum diameter of the switch selector, the switch selector can be prevented from contacting the raised portion during normal use.

[0015] Preferably, the raised portion is provided with a curved surface, and the abutting portion is provided with an inclined surface corresponding to the curved surface. The abutting portion only needs to drive the raised portion to move during movement to achieve the separation of the first switch contact and the second switch contact. In this case, if the raised portion is provided with an angular structure such as a straight surface, the movement resistance between the two will be very large. Therefore, the combination of the curved surface and the inclined surface can reduce the movement resistance between the abutting portion and the raised portion, allowing the user to press the switch cover into place without applying too much external force.

[0016] Preferably, the side surfaces of both ends of the switch springboard are provided with the protrusions. When assembling the first switch contact installation position, it is not necessary to identify the position of the protrusions, and any installation can be performed.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) By bending the middle part of the switch contact piece in the direction of the second switch contact to form a wiring piece, the total height of the switch contact piece after being connected to the wiring terminal is reduced, making the push button switch thinner. At the same time, it can also save the material required for the switch contact piece.

[0019] (2) The transfer rocker and the inner rocker are both accommodated in the cavity provided in the base, so that the switch cover can appear thinner in appearance.

[0020] (3) By providing a protruding portion on the switch springboard and a contact portion on the inner rocker, when the first switch contact and the second switch contact are stuck together, the contact portion on the inner rocker can push the protruding portion to move, thereby causing the switch springboard to swing and realize forced separation of the first switch contact and the second switch contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an exploded view of a thin push button switch of the present invention;

[0022] Figure 2 for Figure 1 A partial enlarged view of

[0023] Figure 3 This is a schematic diagram of the structure of the switch contact and the wiring terminal of the present invention;

[0024] Figure 4 This is a structural diagram of the rocker assembly and the switch cover of the utility model;

[0025] Figure 5 This is a structural diagram of the base of the utility model;

[0026] Figure 6 This is a structural diagram of the inner rocker and switch springboard of the present invention.

[0027] In the accompanying drawings: 100, base; 110, cavity; 120, receiving frame; 121, first rotating hole portion; 122, second rotating hole portion; 200, switch contact piece; 210, second switch contact; 220, wiring piece; 300, terminal; 400, switch cover; 410, claw portion; 500, inner rocker; 510, clamping portion; 520, second rotating shaft portion; 530, abutting portion; 531, inclined surface; 600, switch dial; 700, switch spring; 710, first switch contact; 720, raised portion; 721, arc surface; 800, transfer rocker; 810, clamping arm; 820, first rotating shaft portion; 830, engaging portion. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] Example 1

[0031] This embodiment is the first embodiment of a thin key switch. Figure 1-3As shown, it includes a base 100, a switch contact 200 and a terminal block 300 both mounted in the base 100, and a rocker assembly and a switch cover 400 mounted on the base 100. The switch cover 400 and the rocker assembly are both rotatably connected to the base 100. The rocker assembly includes an inner rocker 500, a switch toggle 600 mounted in the inner rocker 500 and connected to the inner rocker 500 via an elastic member, and a switch jumper 700 mounted on the base 100 and abutting the switch toggle 600. A first switch contact 710 is provided at one end of the bottom surface of the switch jumper 700, and a second switch contact 210 corresponding to the first switch contact 710 is provided on the top surface of the switch contact 200. A terminal block 220 is provided on the top surface of the switch contact 200. The terminal block 220 is formed by bending the middle portion of the switch contact 200, and the terminal block 300 is connected to the terminal block 220.

[0032] In this embodiment, the height of the connecting piece 220 is smaller than the height of the connecting terminal 300. This prevents the connecting piece 220 from protruding from the connecting terminal 300 and affecting the layout of components above the connecting terminal 300, thereby preventing interference.

[0033] The working principle of the thin key switch of this embodiment is as follows:

[0034] With the first switch contact 710 and the second switch contact 210 positioned, the pushbutton switch is a standard pushbutton switch. The terminal lug 220 is formed by bending the middle portion of the switch contact 200, with the bending direction directed toward the top surface of the switch contact 200. Therefore, the terminal lug 220 is positioned above the switch contact 200. When the terminal 300 is connected to the terminal lug 220, the combined thickness of the terminal 300 and the switch contact 200 is the sum of the thickness of the terminal 300 and the switch contact 200. Compared to a typical standard pushbutton switch, the thickness is reduced by the thickness of the second switch contact 210. By reducing the thickness of this portion, the thickness of the entire switch base 100 can be reduced, thereby making the entire switch thinner. Furthermore, since the terminal lug 220 is formed by bending the middle portion of the switch contact 200, material used for the switch contact 200 can be saved.

[0035] The beneficial effect of this embodiment is that by bending the middle portion of the switch contact piece 200 in the direction of the second switch contact 210 to form the connection piece 220, the overall height of the switch contact piece 200 after connection with the connection terminal 300 is reduced, making the push button switch thinner. Furthermore, the material required for the switch contact piece 200 can be reduced.

[0036] Example 2

[0037] This embodiment is the second embodiment of the thin key switch. Figure 3 As shown, based on Example 1, the difference is that, as Figure 4 and 5As shown, the rocker assembly and the base 100 are further defined.

[0038] The rocker assembly also includes a transfer rocker 800 provided with a clamping arm 810, a clamping portion 510 is provided on one side of the inner rocker 500, and the clamping arm 810 is connected to the clamping portion 510; a cavity 110 is provided in the base 100, and the transfer rocker 800 and the inner rocker 500 are both located in the cavity 110 and are respectively rotatably connected to the base 100; the switch surface cover 400 is snap-connected to the transfer rocker 800.

[0039] Preferably, a first rotating shaft portion 820 is provided on both sides of the transfer rocker 800, and a second rotating shaft portion 520 is provided on both sides of the inner rocker 500; a supporting frame 120 is provided on the base 100, and a first rotating hole portion 121 and a second rotating hole portion 122 are provided on the supporting frame 120, which are rotatably connected to the first rotating shaft portion 820 and the second rotating shaft portion 520 respectively. The first rotating hole portion 121 is located directly below the second rotating hole portion 122 and the axes of the two are on the same vertical line.

[0040] Preferably, the switch cover 400 is provided with a claw portion 410, and the transition rocker 800 is provided with a snap-fitting portion 830 that is snap-fitted with the claw portion 410. The claw portion 410 of the switch cover 400 can be inserted into the snap-fitting portion 830, thereby making it concealed in appearance and more beautiful.

[0041] Preferably, the switch cover 400 has three, and the number of the seesaw components corresponds to the number of the switch cover 400; wherein at least two of the seesaw components are symmetrically arranged, and the symmetrical arrangement can be seen in Figure 4 Since the three switch covers 400 are arranged side by side, the width of the transition rocker 800 also needs to occupy a certain volume. Arranging them side by side in a single direction requires a larger width to allow the claw portions 410 to match the engaging portions 830 one by one. After two of the rocker assemblies are arranged symmetrically, that is, the engaging portions 830 of the two transition rocker 800 are close to each other, the corresponding claw portions 410 can be gathered towards the middle, so that the three switch covers 400 can be arranged in a smaller width.

[0042] The working principle of this embodiment is as follows: the switch cover 400 is rotatably connected to the base 100 via the adapter rocker 800. The adapter rocker 800 is located between the inner rocker 500 and the switch cover, and the second rotation hole 122 is located entirely below the first rotation hole 121. That is, in the installed state, the second rotation axis 520 is located below the first rotation axis 820. The contact point between the clamping arm 810 and the clamping portion 510 forms a corresponding rotation force arm difference corresponding to the distance between the first rotation axis 820 of the inner rocker 500 and the second rotation axis 520 of the adapter rocker 800. When the adapter rocker 800 rotates at a small angle, the inner rocker 500 is amplified by the force arm difference, and the rotation angle conversion between the adapter rocker 800 and the inner rocker 500 does not deflect or jam. This ensures that even when the switch cover rotates at a small angle, the switch toggle 600 in the inner rocker 500 can toggle the switch spring 700, achieving a thin push button switch. Based on this, by accommodating both the transfer rocker 800 and the inner rocker 500 in the cavity 110 near the base 100 , the portion exposed from the base 100 can be further reduced, and the switch cover can appear thinner in appearance.

[0043] This embodiment has a beneficial effect compared to the first embodiment: through the action of the transition rocker 800 and the inner rocker 500, the switch cover can drive the switch spring 700 to swing at a relatively small angle, making the case switch thinner. By housing both the transition rocker 800 and the inner rocker 500 within the cavity 110 provided in the base 100, the switch cover can appear thinner in appearance.

[0044] Example 3

[0045] This embodiment is the third embodiment of the thin key switch. This embodiment is similar to the first or second embodiment, except that Figure 6 As shown, a protrusion 720 is provided on the side of one end of the switch springboard 700 away from the first switch contact 710 , and an abutment portion 530 for abutting the protrusion 720 is provided at the bottom of the inner rocker 500 .

[0046] Specifically, the distance from the inner surface of the protrusion 720 to the center of the switch springboard 700 is greater than or equal to the maximum diameter of the switch nozzle 600 .

[0047] In this embodiment, the protrusion 720 is provided with a curved surface 721 , and the abutting portion 530 is provided with an inclined surface 531 corresponding to the curved surface 721 .

[0048] Specifically, the sides of both ends of the switch springboard 700 are provided with raised portions 720. When assembling the first switch contact 710, there is no need to identify the position of the raised portions 720, and any installation is possible. In this embodiment, the two raised portions 720 are located on two opposing sides of the switch springboard 700.

[0049] In the existing push-button switch, the first switch contact 710 and the second switch contact 210 may stick together during use. After sticking occurs, since the switch nozzle 600 is installed in the inner rocker 500 and connected by an elastic member, when the switch cover is pressed at this time, the elastic force of the elastic member is insufficient to disengage the first switch contact 710 and the second switch contact 210. Instead, the elastic member will be compressed, and the switch nozzle 600 will retract into the inner rocker 500. Even after the switch cover is switched, the switch spring 700 does not actually swing with it.

[0050] The working principle of this embodiment is as follows: after the protrusion 720 and the abutment 530 are provided, the switch nozzle 600 is retracted into the inner rocker 500. Since the switch spring 700 remains in place and does not move, the inner rocker 500 swings toward the protrusion 720 and causes the abutment 530 to abut against the protrusion 720. As the inner rocker 500 continues to swing, the force applied by the inner rocker 500 to the protrusion 720 forces the first switch contact 710 and the second switch contact to be disengaged. In the process of the abutting portion 530 driving the protrusion 720 to move, the abutting portion 530 only needs to drive the protrusion 720 to move during the movement to realize the separation of the first switch contact 710 and the second switch contact 210. At this time, if the protrusion 720 is provided with an angular structure such as a straight surface, the movement resistance between the two will be very large. Therefore, the cooperation between the arc surface 721 and the inclined surface 531 can reduce the movement resistance between the abutting portion 530 and the protrusion 720, so that the user does not need to use too much external force to press the switch cover into place.

[0051] Since the distance between the inner surface of the protrusion 720 and the center of the switch springboard 700 is greater than or equal to the maximum diameter of the switch nozzle 600 , the switch nozzle 600 can be prevented from touching the protrusion 720 during normal use.

[0052] The present embodiment has a beneficial effect compared to the first or second embodiment: by providing the protrusion 720 on the switch springboard 700 and the abutment 530 on the inner rocker 500, when the first switch contact 710 and the second switch contact 210 are adhered, the abutment 530 on the inner rocker 500 can push the protrusion 720 to move, thereby causing the switch springboard 700 to swing and realize forced separation of the first switch contact 710 and the second switch contact 210.

[0053] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A thin push button switch, comprising a base (100), a switch contact (200) and a terminal (300) both mounted in the base (100), and a seesaw assembly and a switch cover (400) mounted on the base (100), wherein the switch cover (400) and the seesaw assembly are both rotatably connected to the base (100), the seesaw assembly comprising an inner seesaw (500), a switch nozzle (600) mounted in the inner seesaw (500) and connected to the inner seesaw (500) via an elastic member, and a switch springboard (700) mounted on the base (100) and abutting against the switch nozzle (600), characterized in that: A first switch contact (710) is provided at one end of the bottom surface of the switch jumper (700), and a second switch contact (210) corresponding to the first switch contact (710) is provided on the top surface of the switch contact piece (200); a wiring piece (220) is provided on the top surface of the switch contact piece (200), and the wiring piece (220) is formed by bending the middle part of the switch contact piece (200), and the wiring terminal (300) is connected to the wiring piece (220).

2. The thin key switch according to claim 1, characterized in that: The height of the connecting piece (220) is smaller than the height of the connecting terminal (300).

3. The thin key switch according to claim 1, characterized in that: The rocker assembly further comprises a transition rocker (800) provided with a clamping arm (810); a clamping portion (510) is provided on one side of the inner rocker (500); the clamping arm (810) is connected to the clamping portion (510); a cavity (110) is provided in the base (100); the transition rocker (800) and the inner rocker (500) are both located in the cavity (110) and are rotatably connected to the base (100); and the switch cover (400) is snap-connected to the transition rocker (800).

4. The thin key switch according to claim 3, characterized in that: First rotating shafts (820) are provided on both sides of the transition rocker (800), and second rotating shafts (520) are provided on both sides of the inner rocker (500); a supporting frame (120) is provided on the base (100), and a first rotating hole (121) and a second rotating hole (122) are provided on the supporting frame (120), which are rotatably connected to the first rotating shaft (820) and the second rotating shaft (520), respectively. The first rotating hole (121) is located directly below the second rotating hole (122), and the axes of the two are on the same vertical line.

5. The thin key switch according to claim 4, characterized in that: The switch cover (400) is provided with a claw portion (410), and the transition rocker (800) is provided with a snap-fitting portion (830) that is snap-connected to the claw portion (410).

6. The thin key switch according to claim 5, characterized in that: The switch surface covers (400) have at least three, and the number of the rocker components corresponds to the number of the switch surface covers (400); at least two of the rocker components are symmetrically arranged.

7. The thin key switch according to any one of claims 1 to 6, characterized in that: A protrusion (720) is provided on the side of one end of the switch springboard (700) away from the first switch contact (710), and an abutment portion (530) for abutting the protrusion (720) is provided at the bottom of the inner rocker plate (500).

8. The thin key switch according to claim 7, characterized in that: The distance from the inner surface of the protrusion (720) to the center of the switch springboard (700) is greater than or equal to the maximum diameter of the switch nozzle (600).

9. The thin key switch according to claim 7, characterized in that: The raised portion (720) is provided with a curved surface (721), and the abutting portion (530) is provided with an inclined surface (531) corresponding to the curved surface (721).

10. The thin key switch according to claim 7, wherein: The protrusions (720) are provided on the side surfaces of both ends of the switch jump plate (700).

Images