Filament conversion button switch device

Abstract

A filament conversion button switch device comprises an annunciator bulb base, a main filament terminal is configured on the annunciator bulb base, and the main filament terminal is connected in series with a plurality of parallel normally-closed contacts of a conversion button module through a second connecting cable. A plurality of parallel middle contacts of the conversion button module are connected in series with a conversion terminal of the conversion button module through a first connecting cable, the number of the middle contacts is the same as that of the normally-closed contacts, each middle contact is connected in series with the normally-closed contacts, and each normally-closed contact is connected in series with only one middle contact. When current passes through a plurality of middle contacts or normally-closed contacts which are connected in parallel from the conversion terminal, a plurality of current branches are formed, the contact resistance of the conversion button module is reduced, when any branch goes wrong, the circuit work is not influenced, and the current reaches a main filament terminal through another circuit, so that the signal machine lighting circuit can still work normally; the utility model has the characteristics of safety, high reliability, low cost and reduction of extra work.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit signals, in particular to a filament conversion button switch device. Background Art

[0002] With the rapid development of my country's rail transit construction, the number of subway kilometers in operation in major cities across the country has been increasing year by year in recent years. As the operating life increases, the contact resistance of series circuit signaling equipment increases. At the same time, the increase in service time leads to a decline in signaling equipment performance, an increasing probability of equipment failure, a variety of fault types, and an increasing frequency of internal equipment failures. This makes fault analysis more difficult, leading to longer troubleshooting times. Furthermore, during early maintenance, it was discovered that the existing equipment had a high failure rate, making repair difficult and increasing the complexity of on-site operations. Summary of the Invention

[0003] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present utility model is to provide a filament conversion button switch device, which increases the electrical reliability by connecting multiple intermediate contacts and multiple normally closed contacts in parallel without affecting the normal operation of the original lamp circuit, thereby facilitating on-site filament breakage testing.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A filament transfer button switch device includes a signal light bulb base 1, on which a main filament terminal 12 is configured. The main filament terminal 12 is connected in series with multiple parallel normally closed contacts 22 of a transfer button module 2 via a second connecting cable 4. Multiple parallel middle contacts 21 of the transfer button module 2 are connected in series with a transfer terminal 11 of the transfer button module 2 via a first connecting cable 3. The number of middle contacts 21 of the transfer button module 2 is the same as the number of normally closed contacts 22 of the transfer button module 2. The middle contact 21 of each transfer button module 2 is connected in series with the normally closed contact 22 of the transfer button module 2, and the normally closed contact 22 of each transfer button module 2 is connected in series with only one middle contact 21 of the transfer button module 2.

[0006] The conversion button module 2 includes two groups of neutral contacts 21 and a normally closed contact 22 .

[0007] The first connecting cable 3 and the second connecting cable 4 both have a wire diameter of 0.3 mm 2 ~0.4mm 2 A multi-strand copper wire with an outer sheath is provided. One end of the first connecting cable 3 is fixed to the middle contact 21, and the other end of the first connecting cable 3 is fixed with a first welding ring 31, and the first welding ring 31 is fixed to the adapter terminal 11. One end of the second connecting cable 4 is fixed to the normally closed contact 22, and the other end of the second connecting cable 4 is fixed with a second welding ring 41, and the second welding ring 41 is fixed to the main filament terminal 12.

[0008] The inner diameters of the first welding ring 31 and the second welding ring 41 are 5 mm to 6 mm.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. The two sets of parallel middle contacts 21 and normally closed contacts 22 provided by the conversion button module of the present invention increase the electrical reliability without affecting the normal operation of the original lamp circuit, making it easier to conduct a filament breakage test on site.

[0011] 2. The present invention adopts a first welding ring 31 and a second welding ring 41, which are respectively connected to the adapter terminal 11 and the main filament terminal 12 by bolts, which facilitates installation and disassembly, and reduces maintenance difficulty and workload.

[0012] In summary, the utility model has the characteristics of low maintenance difficulty and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a circuit diagram of the utility model.

[0014] Figure 2 It is a structural diagram of the present utility model.

[0015] FIG3 is a schematic structural diagram of the first connecting cable 3 and the second connecting cable 4 of the present invention; FIG3( a ) is a schematic structural diagram of the first connecting cable 3 , and FIG3( b ) is a schematic structural diagram of the second connecting cable 4 .

[0016] In the figure, 1. Signal light bulb base; 11. Adapter terminal; 12. Main filament terminal; 2. Switch button module; 21. Middle contact; 22. Normally closed contact; 3. First connecting cable; 31. First solder ring; 4. Second connecting cable; 41. Second solder ring. DETAILED DESCRIPTION

[0017] The structural principle and working principle of the present invention are described in detail below with reference to the accompanying drawings.

[0018] In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed or operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0019] Furthermore, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model in their respective contexts.

[0020] See also Figure 1 、 Figure 2 3(a) and 3(b), a filament transfer button switch device, comprising a signal light bulb base 1, on which a main filament terminal 12 is arranged, the main filament terminal 12 being connected in series with two parallel normally closed contacts 22 of the transfer button module 2 via a second connecting cable 4, the two parallel middle contacts 21 of the transfer button module 2 being connected in series with the adapter terminal 11 of the transfer button module 2 via a first connecting cable 3, the middle contact 21 of each transfer button module 2 being connected in series with the normally closed contact 22 of the transfer button module 2, and the normally closed contact 22 of each transfer button module 2 being connected in series with only one middle contact 21 of the transfer button module 2.

[0021] The first connecting cable 3 and the second connecting cable 4 both have a wire diameter of 0.4 mm 2 A multi-strand copper wire with an outer sheath, one end of the first connecting cable 3 is welded to the middle contact 21, and the other end of the first connecting cable 3 is welded with a first welding ring 31, and the first welding ring 31 is fixed to the adapter terminal 11 by bolts, one end of the second connecting cable 4 is welded to the normally closed contact 22, and the other end of the second connecting cable 4 is welded with a second welding ring 41, and the second welding ring 41 is fixed to the main filament terminal 12 by bolts.

[0022] The inner diameters of the first welding ring 31 and the second welding ring 41 are 5 mm.

[0023] The working principle of this utility model is:

[0024] See also Figure 1 When the current flows from the adapter terminal 11 through the two parallel middle contacts 21 or the two parallel normally closed contacts 22, two current branches are formed, which reduces the contact resistance at the transfer button module 2 and increases the circuit redundancy through parallel connection. When a problem occurs in any branch, it does not affect the normal operation of the circuit. The current automatically passes through the other circuit to reach the main filament terminal 12, so that the signal lighting circuit can still work normally, improving safety and reliability, reducing usage costs, and reducing extra labor.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A filament switching push button switch device, comprising a signal light bulb base (1), the signal light bulb base (1) being provided with a main filament terminal (12), characterized in that: The main filament terminal (12) is connected in series with a plurality of parallel normally closed contacts (22) of the conversion button module (2) via a second connecting cable (4); a plurality of parallel middle contacts (21) of the conversion button module (2) are connected in series with the adapter terminal (11) of the conversion button module (2) via a first connecting cable (3); the number of middle contacts (21) of the conversion button module (2) is the same as the number of normally closed contacts (22) of the conversion button module (2); the middle contact (21) of each conversion button module (2) is connected in series with the normally closed contact (22) of the conversion button module (2); and the normally closed contact (22) of each conversion button module (2) is connected in series with only the middle contact (21) of one conversion button module (2).

2. A filament switching button switch device according to claim 1, characterized in that: The conversion button module (2) comprises two groups of intermediate contacts (21) and normally closed contacts (22).

3. A filament switching button switch device according to claim 1, characterized in that: The first connecting cable (3) and the second connecting cable (4) both have a wire diameter of 0.3 mm. 2 ~0.4mm 2 A plurality of copper wires with outer insulation, a first connecting cable (3) having one end fixed to a middle contact (21), a first welding ring (31) fixed to the other end of the first connecting cable (3), the first welding ring (31) fixed to the transfer terminal (11), a second connecting cable (4) having one end fixed to a normally closed contact (22), a second welding ring (41) fixed to the other end of the second connecting cable (4), the second welding ring (41) fixed to the main filament terminal (12).

4. A filament switching button switch device according to claim 3, characterized in that: The inner diameters of the first welding ring (31) and the second welding ring (41) are 5 mm to 6 mm.

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