Time relay for rail transit

Abstract

The utility model relates to a time relay, in particular to a time relay for rail transit, which is used for solving the defects that the transportation and storage difficulty and the maintenance difficulty and cost are increased due to the larger volume of the conventional time relay for rail transit. In the time relay for rail transit, the panel and the shell, the base and the socket, and the shell and the socket are connected in a clamping manner, the upper end and the lower end of the left circuit board and the upper end and the lower end of the right circuit board are respectively connected with the panel and the base in a clamping manner, and the two sides of the upper circuit board and the two sides of the lower circuit board are respectively connected with the left circuit board and the right circuit board in a clamping manner. According to the utility model, a clamping structure is adopted, so that the increase of the overall volume caused by threaded connection and excessive welding is avoided, and the advantages of compact structure and small volume are achieved.

Description

Technical Field

[0001] The utility model relates to a time relay, in particular to a time relay for rail transportation. Background Art

[0002] In recent years, with the rapid development of high-speed railways, urban subways, light rail vehicles and trunk locomotive equipment, small-volume, high-precision, intelligent control electrical equipment is being used more and more. However, most of the electrical control systems of domestically produced EMUs, diesel locomotives, electric locomotives, subways and other vehicles use imported time relays. Although imported time relays have good reliability, they have many factors such as long supply cycle, large size and inconvenient service, which make it difficult to meet user requirements.

[0003] Rail transit time relays are specially used in rail transit systems, such as subways, light rails, trams, etc., and their function is to control and synchronize the train operation schedule, signal system and other related functions. The structure of rail transit time relays usually includes a housing, a base assembly (including a pin signal connector), a panel assembly, a circuit board assembly, a switching relay and a signal connector; among them, the base assembly is used to connect an external power supply or other external systems; the panel assembly is used to adjust the settings of the relay and view the status indication; the circuit board assembly is used to carry the main electronic components and circuits of the relay; the switching relay is used to switch between different circuits to achieve control of different functions; the signal connector is used to communicate with other rail transit system components.

[0004] Due to the particularity of the rail transit system, the time relays used in rail transit usually require a larger volume to accommodate the complex components mentioned above, as well as redundant systems and installation matching devices, but this will increase the difficulty of transportation and storage, and increase the difficulty and cost of maintenance. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the existing time relays for rail transit, that is, the large size increases the difficulty of transportation and storage, as well as the difficulty and cost of maintenance, and to provide a time relay for rail transit.

[0006] In order to solve the deficiencies of the above-mentioned prior art, the present invention provides the following technical solutions:

[0007] A time relay for rail transit, comprising a housing, a base assembly, a panel assembly, a circuit board assembly and a socket; the panel assembly comprises a panel arranged at an opening at the upper end of the housing, an adjustment switch and a status indication assembly arranged on the panel; the base assembly comprises a base arranged at an opening at the lower end of the housing, a plurality of pins arranged on the base, and the lower ends of the plurality of pins are electrically connected to the socket; the circuit board assembly is arranged in the housing; the socket is used to connect an external device;

[0008] Its special features are:

[0009] The panel and the shell, the base and the socket, the base and the shell, and the shell and the socket are all connected by snap-fitting;

[0010] The circuit board assembly includes a left circuit board, a right circuit board, an upper circuit board and a lower circuit board; the upper and lower ends of the left circuit board are respectively clamped with the panel and the base, and the left circuit board is provided with a control chip, a conversion relay and a left signal connector; the upper and lower ends of the right circuit board are respectively clamped with the panel and the base, and the right circuit board is provided with a right signal connector; the upper circuit board is clamped and welded with the adjustment switch and the status indication assembly, and the two sides of the upper circuit board are respectively clamped and electrically connected with the upper ends of the left circuit board and the upper ends of the right circuit board, the lower circuit board is clamped and welded with the upper ends of multiple pins, and the two sides of the lower circuit board are respectively clamped and welded with the lower ends of the left circuit board and the lower ends of the right circuit board.

[0011] Furthermore, both sides of the lower end of the left circuit board and both sides of the lower end of the right circuit board are provided with card slots, and both corners of the lower end of the left circuit board and both corners of the lower end of the right circuit board are wedge-shaped corners;

[0012] The top surface of the base is provided with a left lower connecting component and a right lower connecting component which are respectively clamped with the lower end of the left circuit board and the lower end of the right circuit board. The left lower connecting component and the right lower connecting component have the same structure and both include two lower connecting units. Each lower connecting unit includes two lower connecting plates which are vertically arranged and perpendicular to each other. The upper parts of the inner walls of the two lower connecting plates are provided with wedge surfaces which are adapted to the wedge angles. The upper parts of the inner walls of the two lower connecting plates are connected by a lower clamping block which is adapted to the clamping slot.

[0013] Furthermore, both sides of the upper end of the left circuit board and both sides of the upper end of the right circuit board are provided with card slots, and both corners of the upper end of the left circuit board and both corners of the upper end of the right circuit board are wedge-shaped corners;

[0014] The bottom surface of the panel is provided with a left upper connecting component and a right upper connecting component which are respectively clamped with the upper end of the left circuit board and the upper end of the right circuit board. The left upper connecting component and the right upper connecting component have the same structure and both include two upper connecting units. Each upper connecting unit includes two upper connecting plates which are vertically arranged and parallel to each other. The lower parts of the inner walls of the two upper connecting plates are provided with wedge surfaces which are adapted to the wedge angles. The lower parts of the inner walls of the two upper connecting plates are connected by an upper clamping block which is adapted to the clamping slot.

[0015] Furthermore, a plurality of shell upper slots are provided on the side wall of the upper end of the shell, and a plurality of panel card blocks respectively adapted to the plurality of shell upper slots are provided on the bottom surface of the panel. The plurality of panel card blocks pass through the corresponding shell upper slots for connecting the upper end of the shell with the panel assembly.

[0016] Furthermore, at least one base card slot with a horizontal opening is provided on the side wall of the base, two first shell lower card slots corresponding to the two base card slots are provided on the side wall of the lower end of the shell, and two elastic socket card blocks are provided on the socket, each elastic socket card block passes through the first shell lower card slot and the base card slot in sequence, and is used to connect the lower end of the shell, the base and the socket.

[0017] Furthermore, the front and rear ends of the top surface of the base are both provided with upwardly protruding base blocks, the base card blocks are provided with the base card slots, and the front and rear side walls of the lower circuit board are provided with two lower grooves corresponding to the two base card blocks respectively.

[0018] Furthermore, the left and right walls of the base are both provided with T-shaped grooves, the T-shaped grooves include a horizontal groove and a vertical groove, and the lower side wall surface of the horizontal groove is wedge-shaped; two second shell lower clamping grooves respectively adapted to the two T-shaped grooves are provided on the side wall at the lower end of the shell, the second shell lower clamping grooves include two strip grooves respectively adapted to the protrusions on both sides of the vertical groove, and a shell protrusion adapted to the vertical groove, and the lower side wall surfaces of the two strip grooves and the shell protrusions are adapted to the lower side wall surface of the horizontal groove.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] (1) In a time relay for rail transit of the utility model, the panel and the shell, the base and the socket, the base and the shell, and the shell and the socket are all connected by snap-fitting. The upper end and the lower end of the left circuit board and the upper end and the lower end of the right circuit board are respectively snap-fitted to the panel and the base. The two sides of the upper circuit board and the two sides of the lower circuit board are respectively snap-fitted to the left circuit board and the right circuit board. The utility model adopts a snap-fitting structure as a whole, avoiding the increase of the overall volume caused by threaded connection and excessive welding, and has the advantages of compact structure and small volume, thereby reducing the difficulty of transportation and storage, as well as the difficulty and cost of maintenance.

[0021] (2) In the utility model of a time relay for rail transit, the upper connecting unit, the lower connecting unit and the left circuit board and the right circuit board adopt a slot matching and wedge-shaped design to ensure smooth assembly and improve product reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the exploded structure of an embodiment of a time relay for rail transit of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the housing in the embodiment of the utility model;

[0024] Figure 3This is a schematic diagram of the structure of the panel assembly and the upper connecting unit in the embodiment of the utility model (the protective shell is not shown);

[0025] Figure 4 This is a schematic diagram of the structure of the left circuit board in the embodiment of the utility model (the control chip and the left signal connector are not shown);

[0026] Figure 5 This is a schematic diagram of the structure of the right circuit board in the embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the upper circuit board in the embodiment of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the lower circuit board in the embodiment of the utility model;

[0029] Figure 8 It is a structural schematic diagram of the base assembly and the lower connecting unit in the embodiment of the utility model;

[0030] Fig. 9 It is a schematic diagram of the structure of the socket in the embodiment of the utility model.

[0031] The following are the descriptions of the reference numerals:

[0032] 1-housing, 11-housing upper slot, 12-first housing lower slot, 13-second housing lower slot, 14-positioning card seat; 2-base assembly, 21-base, 22-pin, 23-base block, 24-base slot, 25-T-slot; 31-left circuit board, 311-first upper groove, 32-right circuit board, 321-second upper groove, 33-upper circuit board, 331-first upper bump, 332-second upper bump, 34-lower circuit board, 341-lower groove , 35-card slot, 36-wedge angle; 4-panel assembly, 41-panel, 42-adjustment switch, 43-status indication assembly, 44-protective shell, 45-panel card block; 5-socket, 51-elastic socket card block; 6-lower connecting unit, 61-lower connecting plate, 62-lower card block; 7-upper connecting unit, 71-upper connecting plate, 72-upper card block; 8-conversion relay; 9-right signal connector; 10-control chip; 101-wedge surface; 102-left signal connector. DETAILED DESCRIPTION

[0033] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Reference Figures 1 to 9 A time relay for rail transit includes a housing 1, a base assembly 2, a panel assembly 4, a circuit board assembly and a socket 5.

[0035] Reference Figure 2The shell 1 is a square structure and is provided with an upper opening and a lower opening. A plurality of inverted buckles 14 are provided on the side wall of the shell 1. The inverted buckles 14 are a kind of reserved upper end installation method.

[0036] Reference Figure 3 The panel assembly 4 includes a panel 41 arranged at the upper opening of the housing 1, an adjustment switch 42 and a status indication assembly 43 arranged on the panel 41, and a protective shell 44 arranged outside the panel 41; the adjustment switch 42 includes a single switch control and a double switch control, the single switch control is used to realize a single delay function (such as power-on delay, power-off delay), and the double control switch is used to realize a double delay function (such as pulse cycle delay, disconnection start cycle type, connection start cycle type, etc.); the status indication assembly 43 monitors the working state of the conversion relay 8 and the internal contact conversion state, so as to judge the use state of the utility model. The protective shell 44 is made of transparent material.

[0037] Reference Figure 2 , Figure 3 The panel 41 and the inner wall of the shell 1, and the protective shell 44 and the outer wall of the shell 1 are connected by snapping. Specifically, the four side walls of the shell 1 are each provided with a shell upper slot 11, and the bottom surface of the panel 41 is provided with four panel card blocks 45 respectively adapted to the four shell upper slots 11.

[0038] Reference Figure 8 , Fig. 9 The base assembly 2 includes a base 21 disposed at the lower end opening of the shell 1, and eight pins 22 disposed on the base 21. The lower ends of the eight pins 22 are electrically connected to the socket 5 for signal conversion output.

[0039] Reference Figure 2 , Figure 8 , Fig. 9The base 21 and the socket 5, the base 21 and the shell 1, and the shell 1 and the socket 5 are all connected by snapping. Specifically, the front and rear ends of the top surface of the base 21 are provided with a base block 23 protruding upward, and the base block 23 is provided with a horizontally opened base slot 24. The side wall of the lower end of the shell 1 is provided with two first shell lower slots 12 corresponding to the two base slots 24 respectively, and the socket 5 is provided with two elastic socket blocks 51, each elastic socket block 51 passes through the first shell lower slot 12 and the base slot 24 in sequence, and is used to snap the lower end of the shell 1, the base 21 and the socket 5. The left and right walls of the base 21 are both provided with T-shaped grooves 25, and the T-shaped grooves 25 include horizontal grooves and vertical grooves. The lower side wall surface of the horizontal groove is wedge-shaped, and the side wall at the lower end of the shell 1 is provided with two second shell lower grooves 13 respectively adapted to the two T-shaped grooves 25. The second shell lower grooves 13 include two strip grooves respectively adapted to the protrusions on both sides of the vertical groove, and a shell protrusion adapted to the vertical groove. The lower side wall surfaces of the two strip grooves and the shell protrusions are adapted to the lower side wall surface of the horizontal groove.

[0040] Reference Figures 2 to 7 , the circuit board assembly includes a left circuit board 31, a right circuit board 32, an upper circuit board 33 and a lower circuit board 34. The upper circuit board 33 contains the main control circuit for processing time control, synchronization and other related functions. The lower circuit board 34 contains a power management circuit and a relay output circuit, which is responsible for supplying power to the entire time relay system and outputting the relay conversion signal through the lower circuit board 34. The left circuit board 31 is provided with a control chip 10, a conversion relay 8 and a left signal connector 102, and the control chip 10 is responsible for the control logic of the overall relay. The right circuit board 32 is a power management circuit, which includes an overvoltage protection circuit and an overcurrent protection circuit, as well as voltage conversion to ensure the safe operation of the circuit board assembly. The right signal connector 9 on the right circuit board 32 is used to transmit the power management signal to the upper circuit board 33 and the left circuit board 31.

[0041] The upper and lower ends of the left circuit board 31 are respectively engaged with the upper left connecting component on the bottom surface of the panel 41 and the lower left connecting component on the top surface of the base 21, and the upper and lower ends of the right circuit board 32 are respectively engaged with the upper right connecting component on the bottom surface of the panel 41 and the lower right connecting component on the top surface of the base 21. A groove corresponding to the conversion relay 8 is provided on the right circuit board 32.

[0042] The left circuit board 31 is provided with slots 35 on both sides of the upper end and the lower end, and the four corners of the left circuit board 31 are wedge-shaped corners 36; the right circuit board 32 is provided with slots 35 on both sides of the upper end and the lower end, and the four corners of the right circuit board 32 are wedge-shaped corners 36;

[0043] The left lower connecting assembly and the right lower connecting assembly have the same structure and both include two lower connecting units 6. Each lower connecting unit 6 includes two lower connecting plates 61 that are vertically arranged and perpendicular to each other. The upper inner walls of the two lower connecting plates 61 are provided with wedge surfaces 101 that match the wedge angles 36 to facilitate assembly. The upper inner walls of the two lower connecting plates 61 are connected by a lower clamping block 62 that matches the clamping slot 35. The length of the lower clamping block 62 along the vertical direction matches the width of the clamping slot 35.

[0044] The upper left connecting assembly and the upper right connecting assembly have the same structure and both include two upper connecting units 7. Each upper connecting unit 7 includes two upper connecting plates 71 vertically arranged and parallel to each other. The lower inner walls of the two upper connecting plates 71 are provided with wedge surfaces 101 adapted to the wedge angles 36 for smooth assembly. The lower inner walls of the two upper connecting plates 71 are connected by an upper clamping block 72, which is adapted to the clamping slot 35.

[0045] Reference Figure 6 The upper circuit board 33 is respectively clamped and welded with the adjustment switch 42 and the status indication component 43, and the left side wall and the right side wall of the upper circuit board 33 are respectively clamped and electrically connected with the upper ends of the left circuit board 31 and the right circuit board 32. Specifically, the left circuit board 31 and the right circuit board 32 are respectively provided with a first upper groove 311 and a second upper groove 321 with upper end openings, the left side wall of the upper circuit board 33 is provided with a first upper protrusion 331 adapted to the first upper groove 311, and the right side wall is provided with a second upper protrusion 332 adapted to the second upper groove 321.

[0046] Reference Figure 7 The lower circuit board 34 is clamped and welded with the upper ends of the eight pins 22, and the lower circuit board 34 is clamped and welded with the base 21 for reinforcement. Specifically, the front side wall and the rear side wall of the lower circuit board 34 are provided with two lower grooves 341 corresponding to the two base blocks 23 respectively. The four corners of the lower circuit board 34 are provided with grooves adapted to the four lower connection units 6.

[0047] The working process of the utility model is as follows:

[0048] Before use, the user sets the delay time by adjusting the switch 42; after power-on, the control chip 10 will read the setting information of the adjustment switch 42 through the left signal connector 102, and then control the conversion relay 8 to act, thereby achieving the set delay effect, and output the action status of the conversion relay 8 through the status indication component 43.

Claims

1. A time relay for rail transit, comprising a housing (1), a base assembly (2), a panel assembly (4), a circuit board assembly and a socket (5); the panel assembly (4) comprises a panel (41) arranged at an upper opening of the housing (1), an adjustment switch (42) and a status indication assembly (43) arranged on the panel (41); the base assembly (2) comprises a base (21) arranged at a lower opening of the housing (1), a plurality of pins (22) arranged on the base (21), and the lower ends of the plurality of pins (22) are electrically connected to the socket (5); the circuit board assembly is arranged in the housing (1); and the socket (5) is used to connect an external device; Features: The panel (41) and the housing (1), the base (21) and the socket (5), the base (21) and the housing (1), and the housing (1) and the socket (5) are all connected by snap-fitting; The circuit board assembly comprises a left circuit board (31), a right circuit board (32), an upper circuit board (33) and a lower circuit board (34); the upper end and the lower end of the left circuit board (31) are respectively clamped with the panel (41) and the base (21); the left circuit board (31) is provided with a control chip (10), a conversion relay (8) and a left signal connector (102); the upper end and the lower end of the right circuit board (32) are respectively clamped with the panel (41) and the base (21); the right circuit board (32) is provided with a control chip (10), a conversion relay (8) and a left signal connector (102); A right signal connector (9) is provided; the upper circuit board (33) is respectively clamped and welded with the regulating switch (42) and the status indicating component (43); the two sides of the upper circuit board (33) are respectively clamped and electrically connected with the upper end of the left circuit board (31) and the upper end of the right circuit board (32); the lower circuit board (34) is clamped and welded with the upper ends of the plurality of pins (22); and the two sides of the lower circuit board (34) are respectively clamped and welded with the lower end of the left circuit board (31) and the lower end of the right circuit board (32).

2. A time relay for rail transit according to claim 1, characterized in that: Both sides of the lower end of the left circuit board (31) and both sides of the lower end of the right circuit board (32) are provided with card slots (35), and both corners of the lower end of the left circuit board (31) and both corners of the lower end of the right circuit board (32) are wedge-shaped corners (36); The top surface of the base (21) is provided with a left lower connection component and a right lower connection component which are respectively clamped with the lower end of the left circuit board (31) and the lower end of the right circuit board (32). The left lower connection component and the right lower connection component have the same structure and both include two lower connection units (6). Each lower connection unit (6) includes two lower connection plates (61) which are vertically arranged and perpendicular to each other. The upper parts of the inner walls of the two lower connection plates (61) are provided with a wedge surface (101) which is adapted to the wedge angle (36). The upper parts of the inner walls of the two lower connection plates (61) are connected by a lower clamping block (62), and the lower clamping block (62) is adapted to the clamping slot (35).

3. A time relay for rail transit according to claim 1, characterized in that: Both sides of the upper end of the left circuit board (31) and both sides of the upper end of the right circuit board (32) are provided with card slots (35), and both corners of the upper end of the left circuit board (31) and both corners of the upper end of the right circuit board (32) are wedge-shaped corners (36); The bottom surface of the panel (41) is provided with a left upper connection component and a right upper connection component which are respectively clamped with the upper end of the left circuit board (31) and the upper end of the right circuit board (32). The left upper connection component and the right upper connection component have the same structure and both include two upper connection units (7). Each upper connection unit (7) includes two upper connection plates (71) which are vertically arranged and parallel to each other. The lower parts of the inner walls of the two upper connection plates (71) are provided with a wedge surface (101) which is adapted to the wedge angle (36). The lower parts of the inner walls of the two upper connection plates (71) are connected by an upper clamping block (72), and the upper clamping block (72) is adapted to the clamping slot (35).

4. A time relay for rail transit according to any one of claims 1 to 3, characterized in that: A plurality of housing upper slots (11) are provided on the side wall of the upper end of the housing (1), and a plurality of panel card blocks (45) respectively adapted to the plurality of housing upper slots (11) are provided on the bottom surface of the panel (41); the plurality of panel card blocks (45) pass through the corresponding housing upper slots (11) and are used to connect the upper end of the housing (1) to the panel assembly (4).

5. A time relay for rail transit according to any one of claims 1 to 3, characterized in that: At least one base card slot (24) with a horizontal opening is provided on the side wall of the base (21); two first shell lower card slots (12) corresponding to the two base card slots (24) are provided on the side wall of the lower end of the shell (1); two elastic socket card blocks (51) are provided on the socket (5); each elastic socket card block (51) passes through the first shell lower card slot (12) and the base card slot (24) in sequence, and is used to connect the lower end of the shell (1), the base (21) and the socket (5) by carding.

6. A time relay for rail transit according to claim 5, characterized in that: The front and rear ends of the top surface of the base (21) are both provided with base blocks (23) protruding upwards, the base blocks (23) are provided with the base slots (24), and the front and rear side walls of the lower circuit board (34) are provided with two lower grooves (341) respectively corresponding to the two base blocks (23).

7. A time relay for rail transit according to claim 5, characterized in that: The left and right walls of the base (21) are both provided with T-shaped grooves (25), the T-shaped grooves (25) comprising a horizontal groove and a vertical groove, the lower side wall surface of the horizontal groove being wedge-shaped; the side wall at the lower end of the shell (1) is provided with two second shell lower clamping grooves (13) respectively adapted to the two T-shaped grooves (25), the second shell lower clamping grooves (13) comprising two strip grooves respectively adapted to the protrusions on both sides of the vertical groove, and a shell protrusion adapted to the vertical groove, the lower side wall surfaces of the two strip grooves and the shell protrusion being adapted to the lower side wall surface of the horizontal groove.

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