Double-wing static point group of a switch machine

Abstract

This utility model provides a double-wing stationary contact assembly for a switch machine, relating to the field of switch machine technology. The double-wing stationary contact assembly includes: a base with at least two slots; and a contact assembly disposed at the slots. The contact assembly includes a contact piece and a contact post connected together. The contact piece includes a first contact piece and a second contact piece, with the second contact piece disposed outside the first contact piece. The first contact piece includes an arc segment and a first connecting segment. The second contact piece includes a bent segment and a second connecting segment, with the arc segment disposed within the bent segment. The first connecting segment and the second connecting segment are stacked. This stationary contact assembly solves the problems of low reliability, easy arc erosion, and poor self-cleaning ability of existing stationary contact assemblies due to single-wing contact.

Description

Technical Field

[0001] This utility model relates to the field of switch machine technology, specifically to a switch machine double-wing static contact assembly. Background Technology

[0002] Switch machines are key equipment in railway signaling systems, and the reliability of their static contact groups directly affects train operation safety. Existing static contact groups mainly suffer from the following technical defects:

[0003] Traditional stationary contact assemblies often employ a single-wing contact structure, forming only a single path when the contact piece contacts the moving contact. This structure is prone to poor contact and arc erosion during long-term use, severely impacting the lifespan and reliability of the contact assembly. Especially under high-current conditions, the single-wing structure is susceptible to increased contact resistance due to concentrated arc erosion, potentially leading to contact adhesion. Existing stationary contact assemblies also suffer from poor contact piece design, easily generating significant arcing during disengagement. This not only accelerates the electrochemical corrosion of the contact material but also affects stable signal transmission. Furthermore, traditional contact pieces have poor self-cleaning capabilities, easily accumulating oxide layers and contaminants on the contact surface, further reducing contact reliability.

[0004] In terms of manufacturing processes, traditional stationary contact assemblies impose stringent requirements on mold design due to their structural characteristics. For example, the mounting surface at the bottom of some stationary contact seats needs to be machined with an 11.5° inclination angle. This structural feature directly necessitates that the upper punch of the mold be designed with a corresponding wedge angle. This wedge angle structure hinders the normal flow of plastic material during injection molding, easily causing material shortages in the finished product. At the same time, the sharp angle structure at the front end of the upper punch reduces its mechanical strength, affects the lifespan of the punch, and easily causes flash in the product due to the fit clearance during molding, seriously affecting the yield. In addition, the embedded locking nut structure used in some stationary contact seats causes frictional interference between the mold core insert and the metal nut during the hot die casting demolding process. This not only affects the mold life but also causes scratches in the product slot, reducing the product qualification rate. Therefore, there is an urgent need for a new type of stationary contact assembly that can fundamentally solve the above-mentioned technical problems by starting with the product structure design. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the prior art and provide a double-wing static contact group for a switch machine. Through a unique structural design, it solves the technical problems of low reliability, easy arc erosion, poor self-cleaning ability caused by single-wing contact in existing static contact groups, as well as short mold punch life and low product qualification rate caused by structural design defects.

[0006] To achieve the above and other objectives, this utility model is implemented through the following technical solution: This utility model provides a switch machine double-wing stationary contact group, the switch machine double-wing stationary contact group comprising:

[0007] The base has at least two slots.

[0008] The device includes a contact assembly disposed at the slot. The contact assembly includes a contact piece and a contact post connected together. The contact piece includes a first contact piece and a second contact piece. The second contact piece is disposed outside the first contact piece. The first contact piece includes an arc segment and a first connecting segment. The second contact piece includes a bent segment and a second connecting segment. The arc segment is disposed within the bent segment. The first connecting segment and the second connecting segment are stacked.

[0009] The first contact piece has an arc-shaped segment that forms a first upper wing and a first lower wing, and the second contact piece has a bent segment that forms a second upper wing and a second lower wing.

[0010] The switch machine double-wing stationary contact group adopted in this utility model has the following beneficial effects:

[0011] (1) By forming two independent current paths at the top and bottom through the double-wing contact structure, redundant backup of signal transmission is achieved. The failure of a single path does not affect the overall function, significantly improving the reliability of the system.

[0012] (2) The double-wing structure divides the contact area into independent upper and lower parts, realizing segmented separation, effectively dispersing and guiding the electric arc, reducing the electro-corrosion of the contact material, and extending the service life.

[0013] (3) The relative motion of the contact pieces during the opening and closing process generates a cutting effect, which can effectively remove the oxide layer and contaminants on the contact surface and maintain stable contact resistance.

[0014] (4) The improved contact plate structure and installation method simplify the mold design, avoid the demolding difficulties and material flow problems of the traditional structure, and improve production efficiency and product qualification rate. Attached Figure Description

[0015] Figure 1 The diagram shown is a structural schematic of the double-wing stationary contact group of the switch machine of this utility model.

[0016] Figure 2 The diagram shown is a structural schematic of the double-wing stationary contact group of the switch machine of this utility model.

[0017] Figure 3 The diagram shown is a structural schematic of the base of the double-wing static contact group of the switch machine of this utility model.

[0018] Figure 4The diagram shown is an exploded view of the static contact assembly of the double-wing switch machine of this utility model.

[0019] Figure 5 The image shown is a cross-sectional view of the stationary contact assembly of the double-wing switch machine of this utility model.

[0020] Figure 6 The diagram shown is an exploded view of the contact piece of this utility model.

[0021] Numbering on the map:

[0022] 1-Base, 11-Mounting hole, 12-Slot, 111-Horizontal slot, 112-Vertical slot, 113-First through hole, 2-Contact assembly, 21-Contact post, 22-Contact piece, 23-Connector, 221-First contact piece, 221a-First arc segment, 221b-Second arc segment, 221c-First vertical segment, 221d-First horizontal segment, 221e-Second through hole, 2211-First upper wing, 2212-First lower wing, 222-Second contact piece, 222a-First bent segment, 222b-Second bent segment, 222c-Second vertical segment, 222d-Second horizontal segment, 222e-Third through hole, 2221-Second upper wing, 2222-Second lower wing, 231-Nut, 232-Washer. Detailed Implementation

[0023] Please see Figures 1 to 6 The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0024] like Figure 1 and Figure 3 As shown, the present invention provides a switch machine double-wing static contact assembly, the switch machine double-wing static contact assembly includes a base 1, the base is provided with two slots 12, and the slots 12 are also provided with mounting holes 11 on both sides.

[0025] like Figure 3 As shown, the slot 12 has a T-shaped cross-section and is formed by a horizontal slot 111 and a vertical slot 112 connected together. The width of the horizontal slot 111 is greater than the width of the vertical slot 112. The bottom of the horizontal slot 111 has a first through hole 113.

[0026] like Figure 1 and Figure 5As shown, a contact assembly 2 is provided at the slot 12. The contact assembly 2 includes a contact piece 22, a contact post 21, and a connector 23. The connector 23 includes a nut 231 and a washer 232. The nut 231 and the washer 232 can effectively connect one end of the contact piece 22 and the contact post 21. One end of the contact piece 22 is disposed in the vertical slot 112, and the other end of the contact piece 22 extends out of the base 1. The contact post 21 is disposed in the horizontal slot 111.

[0027] like Figure 5 As shown, the outer periphery of the contact post 21 is provided with threads.

[0028] like Figure 1 and Figure 4 As shown, the contact piece 22 includes a first contact piece 221, which may be a reinforcing piece. The first contact piece 221 includes an arc-shaped segment and a first connecting segment.

[0029] like Figure 4 As shown, the arc segment includes a first arc segment 221a and a second arc segment 221b. The second arc segment 221b connects the first arc segment 221a and the first connecting segment, and the second arc segment 221b is a transition segment.

[0030] like Figure 4 As shown, the first connecting section is L-shaped and includes a first vertical section 221c and a first horizontal section 221d. The first horizontal section 221d has a second through hole 221e. The first horizontal section 221d passes through the second through hole 221e and is installed on the base 1 through the contact post 21, so that the first horizontal section 221d partially covers the top of the transverse groove 111.

[0031] like Figure 4 and Figure 6 As shown, the arc-shaped segment is divided to form a first upper wing 2211 and a first lower wing 2212.

[0032] The contact piece 22 includes a second contact piece 222, which is disposed around the first contact piece 221. The second contact piece 222 includes a bent section and a second connecting section. The cross-section of the bent section can be V-shaped. The bent section includes a first bent section 222a and a second bent section 222b, which are connected to the second connecting section. The arc-shaped segment is disposed within the bent section, and the first connecting section and the second connecting section are stacked.

[0033] like Figure 2 and Figure 6As shown, the tail end of the first bent segment 222a contacts the base 1. The bent segment includes a second upper wing 2221 and a second lower wing 2222. The first arc segment 221a on the arc segment contacts the first bent segment 222a. Specifically, the first upper wing 2211 contacts the second upper wing 2221, and the first lower wing 2212 contacts the second lower wing 2222.

[0034] like Figure 4 and Figure 5 As shown, the second connecting segment is L-shaped and includes a second vertical segment 222c and a second horizontal segment 222d. The second horizontal segment 222d has a third through hole 222e. The second horizontal segment 222d passes through the third through hole 222e and passes through the contact post 21 to be installed on the base 1. The second horizontal segment 222d covers the first horizontal segment 221d.

[0035] The first contact piece (221) and the second contact piece (222) use the arc-shaped segment and the bent segment of their own structure to make the first upper wing (2211), the first lower wing (2212), the second upper wing (2221) and the second lower wing (2222) offset upward in the vertical direction relative to the first connecting segment and the second connecting segment, respectively. The offset angle is 11 to 16 degrees, for example 14 degrees. In this way, the moving contact can be smoothly driven into the contact piece (22) of the two slots (12) and guided into the moving contact.

[0036] When this utility model is in operation, when the moving contact is inserted, the moving contact contacts the upper and lower wings of the second contact piece 222, forming two independent current paths, which can achieve dual protection for signal transmission.

[0037] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A switch machine double-wing stationary contact assembly, characterized in that, The switch machine's biplane stationary contact group includes: A base (1) having at least two slots (12) thereon; The contact assembly (2) is disposed at the slot (12). The contact assembly (2) includes a contact piece (22) and a contact post (21) connected together. The contact piece (22) includes a first contact piece (221) and a second contact piece (222). The second contact piece (222) is disposed outside the first contact piece (221). The first contact piece (221) includes an arc segment and a first connecting segment. The second contact piece (222) includes a bent segment and a second connecting segment. The arc segment is disposed within the bent segment. The first connecting segment and the second connecting segment are stacked. The arc-shaped segment of the first contact piece (221) is divided to form a first upper wing (2211) and a first lower wing (2212), and the bent segment of the second contact piece (222) forms a second upper wing (2221) and a second lower wing (2222).

2. The switch machine double-wing stationary contact assembly according to claim 1, characterized in that: One end of the contact piece (22) is disposed in the slot (12), and the other end of the contact piece (22) extends out of the slot (12).

3. The switch machine double-wing stationary contact assembly according to claim 1, characterized in that: The arc-shaped segment and the bent segment are offset upwards by 11 to 16 degrees in the vertical direction relative to the first connecting segment and the second connecting segment.

4. The switch machine double-wing stationary contact assembly according to claim 1, characterized in that: The arc segment includes a first arc segment (221a) and a second arc segment (221b), the second arc segment (221b) being connected between the first arc segment (221a) and the first connecting segment.

5. The switch machine double-wing stationary contact assembly according to claim 1, characterized in that: The first connecting section is L-shaped and includes a first vertical section (221c) and a first horizontal section (221d), and the first horizontal section (221d) is provided with a second through hole (221e).

6. The switch machine double-wing stationary contact assembly according to claim 5, characterized in that: The second connecting section is L-shaped and includes a second vertical section (222c) and a second horizontal section (222d). The second horizontal section (222d) is provided with a third through hole (222e).

7. The switch machine double-wing stationary contact assembly according to claim 6, characterized in that: The second horizontal segment (222d) covers the first horizontal segment (221d).

8. The switch machine double-wing stationary contact assembly according to claim 1, characterized in that: The contact assembly (2) further includes a connector (23), which includes a nut (231) and a washer (232), and the connector (23) is sleeved on the contact post (21).

9. The switch machine double-wing stationary contact assembly according to claim 1, characterized in that: The base (1) is provided with mounting holes (11).

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