Key switch

Abstract

The utility model particularly relates to a key switch, which comprises a base, a switch panel arranged on the base and a key board hinged on the switch panel, a trigger assembly is arranged in the base, the trigger assembly comprises a trigger seesaw and a wiring terminal, the key board is linked with the trigger seesaw through a linkage piece, and the wiring terminal is connected with the trigger seesaw through the linkage piece. The two ends of the trigger warping plate are respectively provided with a moving contact, the wiring terminals are arranged on the two sides of the trigger warping plate and are connected with static contacts which are electrically connected with the moving contacts when making contact with the moving contacts, the trigger assembly further comprises a conductive gasket, and the wiring terminals are located at the top end of the conductive gasket and are electrically communicated with the conductive gasket. And the height difference between the top surface of the wiring terminal and the bottom surface of the conductive gasket in the first direction A is 9-12cm. By increasing the height distance between the top surface of the wiring terminal and the bottom surface of the conductive gasket, the contact area between the wire and the wiring device is increased, the current per unit area is effectively reduced, the temperature rise is reduced, and the service life of the product is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a key switch. Background Art

[0002] Push button switches are common electrical devices and an important part of home decoration. With the improvement of living standards, people have higher and higher requirements on the appearance of wall switches, hoping that wall switches can be made thinner while ensuring sufficient strength.

[0003] The utility model patent with application number 202320659659.2 discloses an ultra-thin key switch, including a switch base, a switch panel arranged on the switch base, and a key panel hinged on the switch panel. A trigger rocker and a pair of wiring terminals are arranged in the switch base. The key panel is linked with the trigger rocker through a linkage member. A moving contact is respectively arranged at both ends of the trigger rocker.

[0004] The terminal block is used to connect the wires. A metal conductive sheet is provided between the bottom of the terminal block and the switch base. The metal conductive sheet is electrically connected to a conductive member located below the metal conductive sheet and axially penetrated in the switch base. A static contact is provided at the position of the metal conductive sheet corresponding to the moving contact.

[0005] Existing wall switches mostly use metal sheet terminals with a height of 7.6 cm and a thickness of 0.6 cm. The height difference between the top surface of the terminal and the metal sheet is about 7.6 cm. The contact area between the terminal and the wire is small, the current passing through the unit area is large, the temperature rises, and thus affects the service life of the switch. Utility Model Content

[0006] The purpose of the utility model is to provide a key switch in order to overcome the shortcomings and deficiencies of the prior art.

[0007] The technical solution adopted by the utility model is as follows: a key switch, comprising a base, a switch panel arranged on the base, and a key plate hinged on the switch panel, wherein a trigger assembly is arranged in the base, wherein the trigger assembly comprises a trigger seesaw and a wiring terminal, wherein the key plate is linked with the trigger seesaw through a linkage member, wherein a moving contact is respectively arranged at both ends of the trigger seesaw, wherein the wiring terminal is arranged at both sides of the trigger seesaw and is connected with a static contact which forms an electrical connection with the moving contact when in contact with the static contact,

[0008] The trigger assembly also includes a conductive gasket, the connection terminal is located at the top of the conductive gasket and is electrically connected with the conductive gasket.

[0009] The height difference between the top surface of the terminal block and the bottom surface of the conductive pad in the first direction A is 9 cm to 12 cm.

[0010] Preferably, the stationary contact is located at the bottom of the conductive gasket, and there is a height difference in the first direction A between the bottom of the terminal block and the stationary contact.

[0011] Preferably, at least two raised side plates extend upward from a side of the conductive gasket away from the moving contact, and the top of the raised side plate abuts against the bottom of the terminal.

[0012] Preferably, the base and the linkage member are provided with a vertical groove along the first direction A, a conductive member is inserted into the vertical groove, an LED light bar is limitedly arranged between the switch panel and the linkage member, and the lower end of the conductive member is electrically connected with the LED light bar.

[0013] The conductive pad has a contact portion, and the conductive pad is always in contact with the upper end of the conductive member through the contact portion to form an electrical connection, or is in contact with the upper end of the conductive member under the drive of the key panel to form an electrical connection.

[0014] Preferably, the conductive member is a spring pin, the upper end of the spring pin is conical, the abutment portion is a limiting hole that cooperates with the top of the spring pin, the top of the spring pin abuts against the wall of the limiting hole; the lower end of the spring pin abuts against the LED light bar.

[0015] Preferably, the base is connected to a connecting shell, a partition plate is arranged in parallel in the connecting shell, a mounting groove is formed between the two partition plates, and the trigger assembly is installed in the mounting groove.

[0016] Preferably, the conductive gasket includes a first connecting plate and a second connecting plate, one end of the first connecting plate is connected to the middle of the second connecting plate in the horizontal first direction B, and the width of the first connecting plate in the horizontal first direction B is smaller than that of the second connecting plate, so that both sides of the first connecting plate in the horizontal first direction B form a limiting angle with the second connecting plate,

[0017] The partition plates on both sides of the conductive gasket are provided with first convex ribs on their inner sides close to the mounting grooves, which are adapted to the shape of the limiting angles and form a limiting fit. The first convex ribs form limits on the conductive gasket in a horizontal first direction B and its opposite direction, and a horizontal second direction C, and the horizontal second direction C is perpendicular to the horizontal first direction B.

[0018] Preferably, the conductive gasket includes two raised side plates located at both ends of the conductive gasket in the horizontal first direction B, and the partition plates on both sides of the conductive gasket are provided with second ribs on the inner side close to the mounting groove to upper limit the raised side plates in the horizontal first direction B and the opposite direction.

[0019] Preferably, a mounting protrusion that forms a limiting fit with the trigger rocker plate is extended toward the mounting groove from the middle of one side of the partition plate close to the mounting groove in the horizontal first direction B.

[0020] The mounting protrusion is provided with first limit slots at the lower ends of both sides in the second horizontal direction C, which are abutted against the conductive gasket;

[0021] The end of the base away from the switch panel is provided with a second limiting groove abutting against the conductive gasket.

[0022] Preferably, three key panels are provided along the horizontal first direction B, three groups of trigger components are provided correspondingly, and two adjacent groups of trigger components are separated by a partition plate.

[0023] The beneficial effects of the utility model are as follows: by increasing the height distance between the top surface of the terminal block and the bottom surface of the conductive gasket, the contact area between the wire and the wiring device is increased, the current per unit area is effectively reduced, the temperature rise is reduced, and the service life of the product is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0025] Figure 1 This is a top view of the structure of Embodiment 1 of the utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model;

[0027] Figure 3 This is a front cross-sectional view of Embodiment 1 of the utility model;

[0028] Figure 4 This is a front cross-sectional view of Example 1 of the utility model without the connecting shell;

[0029] Figure 5 This is a three-dimensional structural diagram of the guide blade pad in Example 1 of the utility model;

[0030] Figure 6 This is a top view of the guide blade pad portion in Example 1 of the utility model;

[0031] Figure 7 This is a diagram showing the matching structure of the guide pad and the connection terminal in Embodiment 1 of the present utility model;

[0032] Figure 8 This is a front cross-sectional view of the trigger assembly, the switch panel, and the keypad in Embodiment 1 of the present utility model;

[0033] Fig. 9 for Figure 8 A magnified view of the structure at D in the middle;

[0034] Fig.10 This is a top cross-sectional view of Example 1 of the utility model without the switch panel, the keypad, and the trigger rocker;

[0035] Fig.11 for Fig.10 A magnified view of the structure at E in the middle;

[0036] Fig.12 This is a front cross-sectional view of Embodiment 2 of the utility model without the connecting shell;

[0037] Fig.13 for Fig.12 A magnified view of the structure at F in the middle;

[0038] Fig.14 This is a front view of the utility model embodiment 2 without the connection shell and the base;

[0039] Fig.15 This is a three-dimensional structural diagram of the guide blade pad in Example 2 of the utility model;

[0040] In the figure, 1, base; 2, switch panel; 3, keypad; 4, trigger rocker; 5, wiring terminal; 6, static contact; 8, connecting shell; 9, linkage member; 11, conductive member; 12, partition plate; 13, mounting convex portion; 14, first limiting slot; 15, second limiting slot; 16, LED light strip; 51, through hole; 71, conductive gasket; 72, raised side plate; 73, limiting insert; 121, first convex rib; 122, second convex rib; 711, slot; 712, abutment portion; 713, first connecting plate; 714, second connecting plate; 715, limiting angle; 716, limiting hole. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0042] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0043] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0044] Example 1

[0045] like Figures 1 to 11 As shown, in Example 1 of the utility model, a key switch comprises a base 1, a switch panel 2 arranged on the base 1, and a key plate 3 hinged on the switch panel 2. A trigger assembly is arranged in the base 1, and the trigger assembly comprises a trigger rocker 4 and a wiring terminal 5. The key plate 3 is linked with the trigger rocker 4 through a linkage member 9. A moving contact 10 is respectively arranged at both ends of the trigger rocker 4. The wiring terminal 5 is arranged on both sides of the trigger rocker 4 and is connected with a static contact 6 that forms an electrical connection with the moving contact 10 when in contact.

[0046] The trigger assembly further includes a conductive gasket 71. The connecting terminal 5 is located at the top of the conductive gasket 71 and is electrically connected to the conductive gasket 71.

[0047] The height difference between the top surface of the connection terminal 5 and the bottom surface of the conductive pad 71 in the first direction A is 9 cm-12 cm.

[0048] Through this arrangement, the height distance between the top surface of the terminal block and the bottom surface of the conductive gasket is increased, the contact area between the wire and the wiring device is increased, the current per unit area is effectively reduced, the temperature rise is reduced, and the service life of the product is increased.

[0049] In this embodiment, the height difference between the top surface of the terminal 5 and the bottom surface of the conductive gasket 71 in the first direction A is specifically 10.6 cm, wherein the thickness of the conductive gasket 71 is specifically 0.6 cm. The height distance between the top surface of the terminal and the bottom surface of the conductive gasket can be increased by increasing the height of the terminal or by using a conventional terminal size and increasing the distance between the bottom surface of the conductive gasket and the terminal. This embodiment adopts the latter method.

[0050] The stationary contact 6 is located at the bottom of the conductive pad 71 , and there is a height difference in the first direction A between the bottom of the wiring terminal 5 and the stationary contact 6 .

[0051] Through this arrangement, compared with directly connecting the static contact to the wiring terminal, the relative distance between the moving and static contacts is further reduced, the key opening and closing stroke is reduced, and the opening and closing is more convenient and labor-saving.

[0052] At least two raised side plates 72 extend upward from a side of the conductive gasket 71 away from the moving contact 10 , and the top of the raised side plate 72 abuts against the bottom of the terminal 5 .

[0053] In this embodiment, the height of the connection terminal 5 is 7.6 cm, and the height difference between the top of the raised side plate 72 and the bottom of the conductive gasket 71 is 3 cm.

[0054] The base 1 and the linkage member 9 are provided with a vertical groove along the first direction A, a conductive member 11 is inserted into the vertical groove, an LED light bar 16 is limitedly arranged between the switch panel 2 and the linkage member 9, and the lower end of the conductive member 11 is electrically connected with the LED light bar 16.

[0055] The conductive gasket 71 has a contact portion, and the conductive gasket 71 is always in contact with the upper end of the conductive member 11 through the contact portion to form an electrical connection.

[0056] Through this arrangement, the LED light bar can be used as a light indicator to facilitate user operation. The light transmission arrangement of the operation panel and the keypad can adopt existing conventional technical means, which will not be described in detail here.

[0057] The conductive member 11 is a wire connecting strip, and a slot 711 is provided at one end of the conductive gasket 71 away from the trigger rocker 4. The conductive gasket 71 has an abutting piece 712 extending toward the slot 711 and abutting against the upper end of the conductive member 11, namely the abutting portion.

[0058] With this arrangement, the conductive part is limited by the abutment portion after being inserted, and the assembly is convenient and stable.

[0059] The conductive gasket 71 is connected to a limiting insert 73 that extends into the through hole 51 of the wiring terminal 5 and forms a close fit therewith.

[0060] This arrangement improves the connection stability between the wiring terminal and the conductive pad. At the same time, the two fit together to form electrical contact without the need for other electrical connection structures, thus simplifying the overall structure of the device.

[0061] The base 1 is connected to a connecting shell 8 , and a partition plate 12 is arranged in parallel in the connecting shell 8 . A mounting groove is formed between the two partition plates 12 , and the trigger assembly is installed in the mounting groove.

[0062] The conductive gasket 71 includes a first connecting plate 713 and a second connecting plate 714. One end of the first connecting plate 713 is connected to the middle of the second connecting plate 714 in the horizontal first direction B. The width of the first connecting plate 713 in the horizontal first direction B is smaller than that of the second connecting plate 714, so that the two sides of the first connecting plate 713 in the horizontal first direction B form a limiting angle 715 with the second connecting plate 714.

[0063] The partition plates 12 on both sides of the conductive gasket 71 are provided with first convex ribs 121 on the inner side close to the mounting groove, which are adapted to the shape of the limiting angle 715 and form a limiting fit. The first convex ribs 121 form limitations on the conductive gasket 71 in the horizontal first direction B and its opposite direction, and the horizontal second direction C, and the horizontal second direction C is perpendicular to the horizontal first direction B.

[0064] The conductive gasket 71 includes two raised side plates 72 located at both ends of the conductive gasket 71 in the horizontal first direction B. The partition plates 12 on both sides of the conductive gasket 71 are provided with second ribs 122 on their inner sides close to the mounting groove to form upper limits for the raised side plates 72 in the horizontal first direction B and the opposite direction.

[0065] The partition plate 12 has a mounting protrusion 13 extending toward the mounting groove from the middle of the first horizontal direction B on one side of the partition plate 12 close to the mounting groove and forming a limiting fit with the trigger rocker plate 4.

[0066] The mounting protrusion 13 is formed with first limiting grooves 14 at the lower ends of both sides in the horizontal second direction C, which are abutted against the conductive gasket 71;

[0067] The base 1 is provided with a second limiting groove 15 at one end away from the switch panel 2 and abutting against the conductive gasket 71 .

[0068] The key plates 3 are provided in three numbers along the horizontal first direction B, and the trigger components are correspondingly provided in three groups, and two adjacent groups of trigger components are separated by a partition plate 12 .

[0069] Example 2

[0070] like Figure 12-15 As shown in this embodiment, the bottom of the terminal 5 is in abutment with the top of the conductive pad 71, and the distance between the top surface of the terminal 5 and the bottom surface of the conductive pad 71 in the first direction A is increased by increasing the height of the terminal 5. The height of the terminal 5 is specifically set to 10 cm, the height of the conductive pad 71 is specifically set to 0.6 cm, and the height difference between the top surface of the terminal 5 and the bottom surface of the conductive pad 71 in the first direction A is specifically 10.6 cm.

[0071] In this embodiment, the conductive member 11 is a spring pin, the upper end of which is conical, and the abutment portion is a limiting hole 716 that cooperates with the top of the spring pin. The top of the spring pin abuts against the wall of the limiting hole 716; the lower end of the spring pin abuts against the LED light strip 16.

[0072] Through this arrangement, the limiting hole cooperates with the conical tip of the spring thimble, and the spring thimble always maintains a stable fit with the limiting hole under the action of the restoring force of its internal spring, and the application is stable; at the same time, the spring thimble is less likely to be damaged during the installation process than the wire connecting strip in Example 1 because it is retractable.

[0073] The other configurations of this embodiment are the same as those of Embodiment 1.

[0074] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A key switch, comprising a base (1), a switch panel (2) arranged on the base (1), and a key plate (3) hinged on the switch panel (2), wherein a trigger assembly is arranged in the base (1), wherein the trigger assembly comprises a trigger seesaw (4) and a wiring terminal (5), wherein the key plate (3) is linked with the trigger seesaw (4) through a linkage member (9), wherein a moving contact (10) is respectively arranged at both ends of the trigger seesaw (4), wherein the wiring terminal (5) is arranged at both sides of the trigger seesaw (4) and is connected to a stationary contact (6) which forms an electrical connection with the moving contact (10) when in contact with the stationary contact, wherein: The trigger assembly further comprises a conductive gasket (71), the connection terminal (5) is located at the top of the conductive gasket (71) and is electrically connected to the conductive gasket (71). The height difference between the top surface of the connection terminal (5) and the bottom surface of the conductive pad (71) in the first direction (A) is 9 cm to 12 cm.

2. A key switch according to claim 1, characterized in that: The stationary contact (6) is located at the bottom of the conductive gasket (71), and there is a height difference between the bottom of the wiring terminal (5) and the stationary contact (6) in the first direction (A).

3. A key switch according to claim 1, characterized in that: At least two raised side plates (72) extend upward from a side of the conductive gasket (71) away from the moving contact (10), and the top of the raised side plate (72) abuts against the bottom of the connecting terminal (5).

4. A key switch according to claim 1, characterized in that: The base (1) and the linkage member (9) are provided with a vertical groove along a first direction (A), a conductive member (11) is inserted into the vertical groove, an LED light bar (16) is limitedly arranged between the switch panel (2) and the linkage member (9), and the lower end of the conductive member (11) is electrically connected to the LED light bar (16). The conductive gasket (71) has a contact portion, and the conductive gasket (71) is always in contact with the upper end of the conductive member (11) through the contact portion to form an electrical connection.

5. A key switch according to claim 4, characterized in that: The conductive member (11) is a spring ejector pin, the upper end of which is conical, the abutment portion is a limiting hole (716) formed to match the top of the spring ejector pin, and the top of the spring ejector pin abuts against the wall of the limiting hole (716); The lower end of the spring ejector pin is in abutment with the LED light bar (16).

6. A key switch according to claim 1, characterized in that: The base (1) is connected to a connecting shell (8), a partition plate (12) is arranged in parallel in the connecting shell (8), a mounting groove is formed between the two partition plates (12), and the trigger assembly is installed in the mounting groove.

7. A key switch according to claim 6, characterized in that: The conductive gasket (71) comprises a first connecting plate (713) and a second connecting plate (714), one end of the first connecting plate (713) is connected to the middle of the second connecting plate (714) in a first horizontal direction (B), and the width of the first connecting plate (713) in the first horizontal direction (B) is smaller than that of the second connecting plate (714), so that two sides of the first connecting plate (713) in the first horizontal direction (B) form a limiting angle (715) with the second connecting plate (714), The partition plates (12) on both sides of the conductive gasket (71) are provided with first convex ribs (121) on the inner sides thereof close to the mounting grooves, which are adapted to the shape of the limiting angle (715) and form a limiting fit. The first convex ribs (121) form a limit for the conductive gasket (71) in a first horizontal direction (B), its opposite direction, and a second horizontal direction (C), and the second horizontal direction (C) is perpendicular to the first horizontal direction (B).

8. A key switch according to claim 6 or 7, characterized in that: The conductive gasket (71) comprises two raised side plates (72) located at both ends of the conductive gasket (71) in a first horizontal direction (B), and the partition plates (12) on both sides of the conductive gasket (71) are provided with second convex ribs (122) on their inner sides close to the mounting grooves to form upper limits for the raised side plates (72) in the first horizontal direction (B) and in the opposite direction.

9. A key switch according to claim 6, characterized in that: The partition plate (12) has a mounting protrusion (13) extending toward the mounting groove from the middle of the partition plate (12) on one side close to the mounting groove in the first horizontal direction (B) and forming a limiting fit with the trigger rocker plate (4). The mounting protrusion (13) is provided with first limiting grooves (14) at the lower ends of both sides in the second horizontal direction (C) thereof, which are abutted against the conductive gasket (71); One end of the base (1) away from the switch panel (2) is provided with a second limiting groove (15) that abuts against the conductive gasket (71).

10. A key switch according to any one of claims 1 to 7, characterized in that: The key panels (3) are provided in three numbers along the horizontal first direction (B), and the trigger components are correspondingly provided in three groups, and two adjacent groups of trigger components are separated by a partition plate (12).

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