Key-lifting switch

Abstract

The utility model relates to a switch which is operated by a solid directly acting on an operating part capable of rotating around a pivot, in particular to a key-lifting switch, which is used for overcoming the defects that the existing key-lifting switch does not have a light-emitting function, so that the safety risk is increased, the operation is wrong, and the maintenance and overhaul operation are inconvenient. The key-lifting switch comprises a shell, a handle assembly, a transparent light-emitting cover shell, a light-emitting circuit board, a transmission gear, a cam assembly, an external outgoing line terminal printed board and a plurality of quick-action switches, the handle assembly, the transmission gear, the cam assembly and the quick-action switches are in transmission in sequence, and different signal output can be achieved by triggering different quick-action switches. The control light-emitting circuit board can achieve the lighting function through the transparent light-emitting housing, is suitable for night driving, can achieve the accurate judgment of the position of the key-lifting switch, and improves the practicability and safety.

Description

Technical Field

[0001] The utility model relates to a switch which is operated by a solid directly acting on an operating component which can rotate around a pivot, in particular to a toggle switch. Background Art

[0002] A toggle switch is a mechanical switch that is usually used to control the start and stop of circuits or mechanical equipment on trains. This type of switch is usually designed to be rugged and durable, and can withstand heavy usage and environmental stress. On trains, toggle switches may be used to control lighting, air conditioning systems, door openings or other important functions. Due to the special nature of the train environment, these switches usually have dustproof and shockproof features to ensure stability and safety during operation.

[0003] Existing toggle switches do not have a lighting function, resulting in the following problems: (1) in emergency situations, it will increase the safety risk of personnel; (2) in insufficient light conditions, it may cause incorrect operations; (3) during maintenance and repair work, external lighting is required, resulting in inconvenience in operation. Utility Model Content

[0004] The utility model aims to provide a toggle switch to solve the shortcomings of the existing toggle switch, which has no luminous function, leading to increased safety risks, erroneous operation, and inconvenient maintenance and repair operations.

[0005] In order to solve the deficiencies of the above-mentioned prior art, the present invention provides the following technical solutions:

[0006] A toggle switch, which is special in that it includes a housing, a handle assembly, a transparent luminous cover, and a luminous circuit board, a transmission gear, a cam assembly, an external output terminal printed board and a plurality of quick-action switches arranged in the housing;

[0007] The handle assembly includes a handle rod and a handle shaft;

[0008] The top surface of the shell is provided with a top surface convex ring connected with the inside of the shell, and a transparent luminous cover shell is arranged outside the top surface convex ring; the lower end of the handle rod is located inside the shell, and the upper end passes through the top surface convex ring and is located outside the shell; the handle shaft is located in the top surface convex ring and is arranged in a vertical axis direction, and both ends of the handle shaft pass through the through hole provided on the side wall of the top surface convex ring and the limiting hole provided on the transparent luminous cover shell in sequence, and the middle part of the handle shaft passes through the handle through hole provided on the handle rod, so as to make the handle rod rotate around the handle shaft;

[0009] The light-emitting circuit board is arranged in the housing at a position corresponding to the convex ring on the top surface, and the light-emitting circuit board is electrically connected to the transparent light-emitting cover shell;

[0010] The lower end of the handle rod passes through the light-emitting circuit board and is connected to the transmission gear;

[0011] The cam assembly comprises a rotating shaft, a transmission cam sleeved on the rotating shaft and at least one cam; the transmission cam meshes with the transmission gear; a plurality of snap switches are respectively arranged on both sides of each cam and all snap switches are fixed on the inner wall of the housing; the cam teeth on both sides of the cam respectively correspond to the contacts of the corresponding snap switches, so that when the cam rotates, the corresponding contacts are pressed, thereby triggering the snap switches;

[0012] The external output terminal printed board is respectively connected to the pins of each quick-acting switch.

[0013] Furthermore, a limiting assembly is arranged in the shell, and the limiting assembly includes a positioning plate, a limiting rod, a spring, a roller shaft and a roller; the positioning plate is arranged on the rear side wall of the transmission gear close to the shell, and the bottom surface of the positioning plate is arc-shaped; one end of the limiting rod is hinged to a fixed shaft arranged on the inner wall of the shell, and a groove is arranged in the middle, and the roller shaft is arranged in the groove. The roller sleeve is arranged on the roller shaft and contacts with the bottom surface of the positioning plate and rolls relatively; a boss is arranged on the side of the inner wall of the shell opposite to the fixed shaft, and the spring is arranged vertically, and the two ends are respectively abutted against the boss and the other end of the limiting rod.

[0014] Furthermore, two sides of each of the cams are respectively fixed to the pressing sheets of two snap-action switches.

[0015] Furthermore, the handle assembly also includes a handle head sleeved on the upper part of the handle rod.

[0016] Furthermore, the number of the cams is two, and the two cams are symmetrically arranged on both sides of the axial direction of the transmission cam.

[0017] Furthermore, the housing includes a symmetrical front housing and a rear housing.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] (1) The utility model discloses a toggle switch, comprising a housing, a handle assembly, a transparent luminous cover, a luminous circuit board, a transmission gear, a cam assembly, an external output terminal printed circuit board and a plurality of snap-action switches, wherein the handle assembly, the transmission gear, the cam assembly and the plurality of snap-action switches are sequentially transmitted, and different signal outputs can be achieved by triggering different snap-action switches, and the luminous circuit board can realize a lighting function by controlling the transparent luminous cover. The utility model is suitable for driving at night, and can realize accurate judgment of the position of the toggle switch, thereby improving practicality and safety.

[0020] (2) In a toggle switch of the utility model, the limit assembly limits the rotation range of the handle assembly and the transmission gear through the interaction of the positioning plate, the limit rod and the roller, and ensures that the handle assembly can accurately stop at the required position during operation, which not only ensures the consistency and accuracy of the signal, but also prevents the transmission gear and cam assembly from being damaged due to excessive rotation of the handle rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of a toggle switch embodiment of the utility model is shown in FIG. Figure 1 (front housing not shown);

[0022] Figure 2 for Figure 1 axonometric drawing;

[0023] Figure 3 The structure of the embodiment of the utility model is shown in FIG. Figure 2 (rear housing not shown);

[0024] Figure 4 It is a structural schematic diagram of the handle bar, the transmission gear and the cam assembly in the embodiment of the utility model;

[0025] Figure 5 for Figure 1 AA section view;

[0026] Figure 6 This is a schematic diagram of the structure of the limit rod and the fixed shaft in the embodiment of the utility model;

[0027] Figure 7 It is a schematic diagram of the structure in which the transmission gear contacts the inner wall of the housing in an embodiment of the utility model.

[0028] The reference numerals are as follows: 1-housing, 11-top convex ring; 21-handle rod, 22-handle head, 23-handle shaft, 24-handle through hole; 3-transparent luminous cover; 4-luminous circuit board; 5-transmission gear; 6-cam assembly, 61-rotating shaft, 62-transmission cam, 63-cam; 7-quick-action switch; 81-positioning plate, 82-limiting rod, 83-spring, 84-roller shaft, 85-roller, 86-groove, 87-fixed shaft; 9-external output terminal printed circuit board; 10-boss. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Reference Figures 1 to 7A toggle switch includes a housing 1, a handle assembly, a transparent luminous cover 3, and a luminous circuit board 4, a transmission gear 5, a cam assembly 6, a limit assembly, an external output terminal printed circuit board 9 and four quick-action switches 7 arranged in the housing 1.

[0031] The handle assembly comprises a handle bar 21, a handle head 22 and a handle shaft 23, wherein the handle head 22 is sleeved on the upper part of the handle bar 21;

[0032] The above-mentioned shell 1 includes a symmetrical front shell and a rear shell, and a top surface of the shell 1 is provided with a top surface convex ring 11, and a transparent luminous cover shell 3 is arranged outside the top surface convex ring 11, and a handle shaft 23 is arranged in the top surface convex ring 11 along the axial direction perpendicular to the top surface convex ring 11, and both ends of the handle shaft 23 pass through the through holes set on the side wall of the top surface convex ring 11 and the limiting holes set on the transparent luminous cover shell 3 in sequence, and the middle part of the handle shaft 23 passes through the handle through hole 24 set on the handle rod 21, which is used to make the handle rod 21 rotate around the handle shaft 23; the above-mentioned luminous circuit board 4 is arranged in the shell 1 at a position corresponding to the top surface convex ring 11, and the luminous circuit board 4 is electrically connected to the transparent luminous cover shell 3.

[0033] The upper end of the handle bar 21 passes through the top convex ring 11 and is located outside the housing 1 , and the lower end is located inside the housing 1 and is arranged in a vertical axis direction. The lower end passes through the light-emitting circuit board 4 to set the transmission gear 5 .

[0034] The cam assembly 6 comprises a rotating shaft 61, a transmission cam 62 sleeved on the rotating shaft 61 and two cams 63. The two cams 63 are symmetrically arranged along the transmission cam 62. The transmission cam 62 is meshed with the transmission gear 5. Two quick-acting switches 7 are arranged on both sides of each cam 63, and the cam teeth on both sides of each cam 63 are respectively fixed to the pressing pieces of the two quick-acting switches 7, so that when the cam 63 rotates, the corresponding contacts are squeezed, thereby triggering the quick-acting switches 7. All quick-acting switches 7 are fixed on the inner wall of the housing 1.

[0035] An external output terminal printed board 9 is provided on the bottom surface of the inner wall of the housing 1, and the external output terminal printed board 9 is connected to the pins of each quick-acting switch 7, specifically by plugging or welding. The external output terminal printed board 9 provides a physical interface for the quick-acting switch 7, converts the switch action into an electrical signal, and distributes and outputs these signals to the circuit or device outside the toggle switch, that is, when a quick-acting switch 7 is triggered, the corresponding signal will be transmitted to other electronic components or systems through the external output terminal printed board 9 to realize the control function. The external output terminal printed board 9 can also supply power to the light-emitting circuit board 4 to ensure that its lighting function works normally. In addition, the external output terminal printed board 9 simplifies the connection between the toggle switch and the external system, making installation, maintenance and replacement more convenient and quick.

[0036] Reference Figure 3 , Figure 5 , Figure 6 The limit assembly is used to ensure that the handle assembly can accurately stop at the required position during operation, thereby ensuring the consistency and accuracy of the signal. The limit assembly includes a positioning plate 81, a limit rod 82, a spring 83, a roller shaft 84 and a roller 85; the positioning plate 81 is arranged on the rear side wall of the transmission gear 5 close to the housing 1, and the bottom surface of the positioning plate 81 is arc-shaped; one end of the limit rod 82 is hinged to a fixed shaft 87 arranged on the inner wall of the housing 1, and a groove 86 is arranged in the middle, and the roller shaft 84 is arranged in the groove 86. The roller 85 is sleeved on the roller shaft 84 and contacts with the bottom surface of the positioning plate 81 and rolls relatively. A boss 10 is arranged on the upper inner wall of the housing 1, and the spring 83 is arranged vertically, and its two ends are respectively abutted against the boss 10 and the other end of the limit rod 82.

[0037] Reference Figure 7 When the handle bar 21 rotates to the set maximum angle, the transmission gear 5 will contact the inner wall of the housing 1. Figure 7 As shown at A in the middle, the feedback force generated by the contact will prompt the operator that the limit position has been reached, preventing the handle bar 21 from rotating further, thereby preventing damage that may be caused by excessive force.

[0038] The working principle of the utility model is as follows:

[0039] The handle head 22 is controlled to make the handle rod 21 rotate around the handle shaft 23, and the transmission gear 5, the transmission cam 62, the rotating shaft 61, and the cam 63 are driven in sequence through the handle rod 21. The pressing piece of the quick-acting switch 7 is squeezed by the cam 63 to trigger the quick-acting switch 7 to output a signal; at the same time, the light-emitting circuit board 4 is controlled to realize the lighting function through the transparent light-emitting cover 3, so that the position of the toggle switch and whether the toggle switch function is normal can be judged during night driving.

Claims

1. A toggle switch, characterized in that: It comprises a housing (1), a handle assembly, a transparent luminous cover (3), and a luminous circuit board (4), a transmission gear (5), a cam assembly (6), an external output terminal printed board (9), and a plurality of quick-acting switches (7) arranged in the housing (1); The handle assembly comprises a handle rod (21) and a handle shaft (23); The top surface of the shell (1) is provided with a top surface convex ring (11) which is in communication with the inside of the shell (1), and the top surface convex ring (11) is provided with a transparent luminous cover shell (3) on its outer cover; the lower end of the handle rod (21) is located inside the shell (1), and the upper end passes through the top surface convex ring (11) and is located outside the shell (1); the handle shaft (23) is located inside the top surface convex ring (11) and is arranged perpendicular to the axis direction, and both ends of the handle shaft (23) pass through the through hole provided on the side wall of the top surface convex ring (11) and the limiting hole provided on the transparent luminous cover shell (3) in sequence, and the middle part of the handle shaft (23) passes through the handle through hole (24) provided on the handle rod (21), so as to enable the handle rod (21) to rotate around the handle shaft (23); The light-emitting circuit board (4) is arranged in the housing (1) at a position corresponding to the top surface convex ring (11), and the light-emitting circuit board (4) is electrically connected to the transparent light-emitting cover shell (3); The lower end of the handle rod (21) passes through the light-emitting circuit board (4) and is connected to the transmission gear (5); The cam assembly (6) comprises a rotating shaft (61), a transmission cam (62) sleeved on the rotating shaft (61), and at least one cam (63); the transmission cam (62) meshes with the transmission gear (5); a plurality of snap switches (7) are respectively arranged on both sides of each cam (63); all snap switches (7) are fixed on the inner wall of the housing (1); the cam teeth on both sides of the cam (63) respectively correspond to the contacts of the corresponding snap switches (7), so that when the cam (63) rotates, the corresponding contacts are pressed, thereby triggering the snap switches (7); The external output terminal printed board (9) is respectively connected to the pins of each quick-acting switch (7).

2. A toggle switch according to claim 1, characterized in that: A limiting assembly is arranged in the housing (1), and the limiting assembly comprises a positioning plate (81), a limiting rod (82), a spring (83), a roller shaft (84) and a roller (85); the positioning plate (81) is arranged on the rear side wall of the transmission gear (5) close to the housing (1), and the bottom surface of the positioning plate (81) is arc-shaped; one end of the limiting rod (82) is hinged to a fixed shaft (87) arranged on the inner wall of the housing (1), and a groove (86) is arranged in the middle part; the roller shaft (84) is arranged in the groove (86), and the roller (85) is sleeved on the roller shaft (84) and contacts with the bottom surface of the positioning plate (81) and rolls relatively; a boss (10) is arranged on the inner wall of the housing (1) on the side opposite to the fixed shaft (87), and the spring (83) is arranged vertically, and two ends thereof are respectively in contact with the boss (10) and the other end of the limiting rod (82).

3. A toggle switch according to claim 1 or 2, characterized in that: Both sides of each cam (63) are respectively fixed to the pressing sheets of two snap-action switches (7).

4. A toggle switch according to claim 3, characterized in that: The handle assembly also includes a handle head (22) sleeved on the upper part of the handle rod (21).

5. A toggle switch according to claim 4, characterized in that: The number of the cams (63) is two, and the two cams (63) are symmetrically arranged on both sides of the axial direction of the transmission cam (62).

6. A toggle switch according to claim 5, characterized in that: The housing (1) comprises a symmetrical front housing and a rear housing.

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