Quick-action switch with normally open end

Abstract

The utility model relates to the technical field of switches for control systems, and discloses a quick-action switch with a normally open end, which comprises a back plate, a first fixing plate fixedly mounted at the top of the front side of the back plate, a fixed contact fixedly mounted at the bottom of the first fixing plate, a second fixing plate fixedly mounted at the front side of the back plate, and a movable contact fixedly mounted at the bottom of the second fixing plate. And a boss is fixedly mounted at the top of the second fixing plate. According to the utility model, through the arrangement of the breaking reed and the position difference between the rectangular block and the connecting block, the limiting plate and the boss abut against each other in a default state, so that the switch is switched off, the guide rod is pressed downwards, so that the position of the rectangular block is changed, and further, the moving contact rapidly bounces upwards and abuts against the static contact; compared with a traditional device, the device can realize the switching-on and switching-off functions of the switch only through one group of static contacts and moving contacts, so that materials are effectively saved, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the control system switch technical field, more specifically, the utility model relates to a normally open end quick -acting switch. BACKGROUND

[0002] As the core component of locomotive various signal feedback and signal control, the quick -acting switch plays an indispensable role. It is particularly suitable for low voltage electrical appliance control loop and auxiliary loop, can work stably in complex electrical environment, ensures the accuracy and reliability of signal transmission, in various locomotives, high speed rail, subway and shielded door etc. track transportation field, the quick -acting switch is popular because of its excellent performance and wide applicability.

[0003] In the signal system of locomotive and other track transportation equipment, the switch of some positions needs to carry out signal feedback when the switch is closed and opened, to ensure that the system can obtain the switch state in real time, thereby making correct control decision, in order to meet this demand, the quick -acting switch needs to have two contacts of normally closed end and normally open end, so as to provide two kinds of signal states at the same time when the switch acts, however, in actual application, many positions of the switch only need a normally open end to meet the requirement of signal transmission, and the normally closed end is in idle state, this design not only increases the manufacturing cost of the switch, but also causes the waste of resources.

[0004] More importantly, because the moving contact and the static contact of the switch are pure silver or silver alloy such as noble metal, the idle normally closed end contact will cause the waste of resources and increase the manufacturing cost, therefore, a quick -acting switch with only normally open end is needed. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of the prior art, the utility model provides a quick -acting switch with normally open end, which has the advantages of only normally open end and fast on-off.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a quick -acting switch with normally open end, comprising a back plate, a first fixed plate is fixedly installed at the top of the front side of the back plate, a static contact is fixedly installed at the bottom of the first fixed plate, a second fixed plate is fixedly installed at the front side of the back plate, and a boss is fixedly installed at the top of the second fixed plate.

[0007] A guide rod is movably sleeved at the top of the back plate, a rectangular block is fixedly installed at the bottom of the guide rod, a transmission block is fixedly installed at the bottom of the rectangular block, a moving column is fixedly installed at the bottom of the transmission block, a supporting seat is fixedly installed at the bottom of the front side of the back plate, and the moving column is movably installed in the inside of the supporting seat.

[0008] The inner wall of the back plate is provided with a limiting groove on the left and right sides, a fixed frame is movably installed at the upper and lower ends of the limiting groove, a connecting block is fixedly installed between the two fixed frames, the connecting block is provided on both sides and located at the left and right ends of the fixed frame, a second V-shaped groove is formed at one end of the rectangular block facing the two connecting blocks, a first V-shaped groove is formed at the left and right ends of the rectangular block, the second V-shaped groove and the first V-shaped groove are elastically connected through a break spring, a moving contact is fixedly installed between the upper fixed frame and the connecting block, the moving contact is provided in two groups and located at the left and right ends of the fixed frame, a limiting plate is fixedly installed between the lower fixed frame and the connecting block, and the limiting plate is provided in two groups and located at the left and right ends of the fixed frame.

[0009] As a preferred technical scheme of the utility model, the inside of the support base is provided with a guide groove, the outer wall of the moving column is provided with a guide block, the guide block is movably installed in the inside of the guide groove, and the moving column and the support base are elastically connected through a spring.

[0010] As a preferred technical scheme of the utility model, the two groups of moving contacts are located at the bottom of the two groups of static contacts, and the two groups of limiting plates and the bosses abut against each other.

[0011] As a preferred technical scheme of the utility model, the left and right sides of the support base are provided with arc-shaped grooves, and the inside of the two groups of arc-shaped grooves is rotatably installed with a break block, and the rotating shaft of the break block is located in the middle of the break block.

[0012] As a preferred technical scheme of the utility model, when the switch is in a free state, the distance between the static contact and the moving contact is 1.3-1.4 mm.

[0013] As a preferred technical scheme of the utility model, the thickness of the break spring is 0.12 mm, the left and right ends of the break spring are stressed after assembly, and the rectangular block and the connecting block compress the break spring.

[0014] As a preferred technical scheme of the utility model, the left and right ends of the transmission block are provided with bosses, and the bosses are located above the two groups of break blocks.

[0015] Compared with the prior art, the utility model has the beneficial effects as follows:

[0016] The utility model discloses a break spring, a rectangular block and a connecting block, which are arranged in the support base, and the break spring is elastically connected between the rectangular block and the connecting block.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic diagram of the utility model;

[0018] Figure 2 It is the structure schematic diagram of the utility plate and guide rod split of the utility model;

[0019] Figure 3 It is the structure schematic diagram of the utility model moving contact;

[0020] Figure 4 It is the structure schematic diagram of the utility model breaking spring piece;

[0021] Figure 5 It is the structure schematic diagram of the utility model backboard.

[0022] In the drawing: 1, backboard;2, first fixed plate;3, static contact;4, second fixed plate;5, boss;6, support seat;7, guide rod;8, rectangular block;9, transmission block;10, moving column;11, spring;12, guide block;13, guide groove;14, arc-shaped groove;15, breaking block;16, limiting groove;17, fixed frame;18, connecting block;19, moving contact;20, first V-shaped groove;21, second V-shaped groove;22, breaking spring piece;23, limiting plate. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] As Figures 1 to 5 Indicated, the utility model provides a kind of quick operating switch of normally open end, including backboard 1, the front side top of backboard 1 is fixedly installed with first fixed plate 2, the bottom of first fixed plate 2 is fixedly installed with static contact 3, the front side of backboard 1 is fixedly installed with second fixed plate 4, and the top of second fixed plate 4 is fixedly installed with boss 5;

[0025] The top of backboard 1 movably sleeves guide rod 7, the bottom of guide rod 7 is fixedly installed with rectangular block 8, the bottom of rectangular block 8 is fixedly installed with transmission block 9, the bottom of transmission block 9 is fixedly installed with moving column 10, the front side bottom of backboard 1 is fixedly installed with support seat 6, and moving column 10 is movably installed in the inside of support seat 6;

[0026] The inner wall of the back plate 1 is provided with a limiting groove 16 on the left and right sides, the upper and lower ends of the limiting groove 16 are movably provided with a fixed frame 17, the upper and lower groups of fixed frames 17 are fixedly provided with a connecting block 18, the connecting block 18 has two sides and is located at the left and right ends of the fixed frame 17, one end of the two groups of connecting blocks 18 facing the rectangular block 8 is provided with a second V-shaped groove 21, the left and right ends of the rectangular block 8 are provided with a first V-shaped groove 20, the second V-shaped groove 21 and the first V-shaped groove 20 are elastically connected through a broken spring piece 22, the upper fixed frame 17 and the connecting block 18 are fixedly provided with a moving contact 19, the moving contact 19 has two groups and is located at the left and right ends of the fixed frame 17, the lower fixed frame 17 and the connecting block 18 are fixedly provided with a limiting plate 23, and the limiting plate 23 has two groups and is located at the left and right ends of the fixed frame 17.

[0027] After the device is assembled, in the default state, the spring 11 elastically supports the guide rod 7 because the moving column 10 and the supporting seat 6 are elastically connected through the spring 11, and at this time the height of the rectangular block 8 is higher than that of the connecting block 18. Further, the broken spring piece 22 is inclined because the rectangular block 8 and the connecting block 18 are elastically connected through the broken spring piece 22, and the broken spring piece 22 always gives the connecting block 18 a downward force. At this time, the limiting plate 23 at the bottom of the connecting block 18 and the boss 5 abut against each other, the moving contact 19 and the static contact 3 are separated, the switch is in a non-conductive state, and the force applied to the connecting block 18 through the broken spring piece 22 makes the moving contact 19 in a stable state. When the switch needs to be turned on, the worker presses the guide rod 7 downward, and further the guide rod 7 drives the rectangular block 8, the transmission block 9 and the moving column 10 to move downward, so that the spring 11 is compressed. With the downward movement of the rectangular block 8, the broken spring piece 22 gradually recovers from the inclined state to the horizontal state, and because the linear distance between the connecting block 18 and the rectangular block 8 becomes shorter, the left and right ends of the broken spring piece 22 are further compressed by the rectangular block 8 and the connecting block 18 to accumulate energy. When the rectangular block 8 continues to move downward and the height of the rectangular block 8 is lower than that of the connecting block 18, the connecting block 18 quickly moves upward through the elastic potential energy of the broken spring piece 22, further the connecting block 18 drives the fixed frame 17 to move upward along the limiting groove 16, and the moving contact 19 abuts against the static contact 3 to realize closing, completing the switching process from non-conduction to closing. After the worker releases the guide rod 7, the moving column 10 moves upward along the guide groove 13 through the elastic potential energy of the spring 11, further making the rectangular block 8 reset to a position higher than the connecting block 18. Further based on the above principle, the connecting block 18 resets downward, so that the limiting plate 23 and the boss 5 abut against each other, and the static contact 3 and the moving contact 19 are disconnected, realizing the whole process of the switch.

[0028] By the setting of the disconnecting spring piece 22 and the gap between the rectangular block 8 and the connecting block 18, the limiting plate 23 and the boss 5 abut against each other in the default state, so that the switch is disconnected, and by pressing the guide rod 7 downward, the position of the rectangular block 8 is changed, further making the moving contact 19 quickly pop up and abut against the stationary contact 3, compared with the traditional device, the device is always in the disconnected state in the free state, the device can realize the closing and opening functions of the switch through only one set of stationary contact 3 and moving contact 19, effectively saving the material and reducing the cost.

[0029] Wherein, the inside of the support base 6 is provided with a guide groove 13, and the outer wall of the moving column 10 is provided with a guide block 12, the guide block 12 is movably installed in the inside of the guide groove 13, and the moving column 10 and the support base 6 are elastically connected through the spring 11.

[0030] After the staff releases the guide rod 7, the moving column 10 will be reset upward along the guide groove 13 through the elastic potential energy of the spring 11.

[0031] Wherein, the two sets of moving contacts 19 are located at the bottom of the two sets of stationary contacts 3, and the two sets of limiting plates 23 and the bosses 5 abut against each other.

[0032] When the boss 5 and the limiting plate 23 abut against each other, the switch is not connected, and when the moving contact 19 and the stationary contact 3 abut against each other, the switch is connected.

[0033] Wherein, the left and right sides of the support base 6 are provided with arc-shaped grooves 14, and the two sets of arc-shaped grooves 14 are rotatably installed with disconnecting blocks 15, and the rotating shafts of the disconnecting blocks 15 are located in the middle of the disconnecting blocks 15.

[0034] When the guide rod 7 is pressed downward, the transmission block 9 will be displaced downward synchronously, and the left and right ends of the transmission block 9 will extrude the ends of the two sets of disconnecting blocks 15 facing the inside during the movement, further making the disconnecting blocks 15 rotate, at this time, the ends of the disconnecting blocks 15 facing the outside are lifted up, the fixed frame 17 at the bottom is lifted up, this step is to forcibly lift up the fixed frame 17, avoiding the limiting plate 23 and the boss 5 on the left and right sides of the fixed frame 17 from being abutted against each other for a long time to cause the adhesion together, avoiding the jamming of the guide rod 7.

[0035] Wherein, the distance between the stationary contact 3 and the moving contact 19 is 1.3-1.4mm in the free state of the switch.

[0036] Wherein, the thickness of the disconnecting spring piece 22 is 0.12mm, and the left and right ends of the disconnecting spring piece 22 are stressed after assembly, and the disconnecting spring piece 22 is compressed by the rectangular block 8 and the connecting block 18.

[0037] The rectangular block 8 and the connecting block 18 are elastically connected through the disconnecting spring 22, the disconnecting spring 22 is in an inclined state, and the disconnecting spring 22 always gives the connecting block 18 a downward force, at this time, the limiting plate 23 at the bottom of the connecting block 18 and the boss 5 abut against each other, the moving contact 19 and the static contact 3 are separated, the switch is in a non-conducting state, and the force applied to the connecting block 18 through the disconnecting spring 22 makes the moving contact 19 in a stable state.

[0038] The transmission block 9 is provided with protrusions at the left and right ends, and the protrusions are located above the left and right groups of disconnecting blocks 15.

[0039] The working principle and use process of the utility model are as follows:

[0040] After the device is assembled, in the default state, the spring 11 elastically supports the guide rod 7 because the moving column 10 and the supporting seat 6 are elastically connected through the spring 11, at this time, the height of the rectangular block 8 is higher than that of the connecting block 18, further, the disconnecting spring 22 is in an inclined state because the rectangular block 8 and the connecting block 18 are elastically connected through the disconnecting spring 22, and the disconnecting spring 22 always gives the connecting block 18 a downward force, at this time, the limiting plate 23 at the bottom of the connecting block 18 and the boss 5 abut against each other, the moving contact 19 and the static contact 3 are separated, the switch is in a non-conducting state, and the force applied to the connecting block 18 through the disconnecting spring 22 makes the moving contact 19 in a stable state, when it is necessary to open the switch, the worker presses downward the guide rod 7, further, the guide rod 7 drives the rectangular block 8, the transmission block 9 and the moving column 10 to displace downward, so that the spring 11 is compressed, along with the downward displacement of the rectangular block 8, the disconnecting spring 22 gradually recovers from the inclined state to the horizontal state, and the left and right ends of the disconnecting spring 22 are further compressed by the rectangular block 8 and the connecting block 18 because the linear distance between the connecting block 18 and the rectangular block 8 is shortened, and energy is accumulated, when the rectangular block 8 continuously displaces downward and the height of the rectangular block 8 is lower than that of the connecting block 18, the connecting block 18 quickly displaces upward through the elastic potential energy of the disconnecting spring 22, further, the connecting block 18 drives the fixed frame 17 to move upward along the limiting groove 16, and the moving contact 19 abuts against the static contact 3, so that the switch is closed, and the switching process from the non-conducting state to the closed state is completed, after the worker releases the guide rod 7, the moving column 10 is reset upward along the guide groove 13 through the elastic potential energy of the spring 11, further, the rectangular block 8 is reset to a position higher than that of the connecting block 18, further, based on the above principle, the connecting block 18 is reset downward, so that the limiting plate 23 and the boss 5 abut against each other, and the static contact 3 and the moving contact 19 are disconnected, so that the whole process of the switch is realized.

[0041] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0042] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A snap switch of the normally open type comprising a backplate (1), characterised in that: The front side top of the back plate (1) is fixedly installed with a first fixed plate (2), the bottom of the first fixed plate (2) is fixedly installed with a static contact (3), the front side of the back plate (1) is fixedly installed with a second fixed plate (4), and the top of the second fixed plate (4) is fixedly installed with a boss (5). The top of the back plate (1) is movably sleeved with a guide rod (7), the bottom of the guide rod (7) is fixedly installed with a rectangular block (8), the bottom of the rectangular block (8) is fixedly installed with a transmission block (9), the bottom of the transmission block (9) is fixedly installed with a moving column (10), the front bottom of the back plate (1) is fixedly installed with a support seat (6), and the moving column (10) is movably installed in the inside of the support seat (6). The left and right sides of the inner wall of the back plate (1) are both provided with a limiting groove (16), the upper and lower ends of the limiting groove (16) are both movably installed with a fixed frame (17), a connecting block (18) is fixedly installed between the two groups of fixed frames (17), the two sides of the connecting block (18) are located at the left and right ends of the fixed frame (17), one end of the two groups of connecting blocks (18) facing the rectangular block (8) is provided with a second V-shaped groove (21), the left and right ends of the rectangular block (8) are both provided with a first V-shaped groove (20), the second V-shaped groove (21) and the first V-shaped groove (20) are elastically connected through a break spring (22), the top of the fixed frame (17) and the connecting block (18) are fixedly installed with a moving contact (19), the two groups of moving contacts (19) are located at the left and right ends of the fixed frame (17), and the bottom of the fixed frame (17) and the connecting block (18) are fixedly installed with a limiting plate (23).

2. A normally open, quick break switch according to claim 1, wherein: The inside of the support seat (6) is provided with a guide groove (13), the outer wall of the moving column (10) is provided with a guide block (12), the guide block (12) is movably installed in the inside of the guide groove (13), and the moving column (10) and the support seat (6) are elastically connected through a spring (11).

3. A normally open, quick break switch according to claim 1, wherein: The two groups of moving contacts (19) are located at the bottom of the two groups of static contacts (3), and the two groups of limiting plates (23) and the boss (5) abut each other.

4. A normally open, quick break switch according to claim 1, wherein: The left and right sides of the support seat (6) are both provided with an arc-shaped groove (14), and the inside of the two groups of arc-shaped grooves (14) is rotatably installed with a break block (15), and the rotating shaft of the break block (15) is located in the middle of the break block (15).

5. A normally open, quick break switch according to claim 1, wherein: When the switch is in a free state, the distance between the static contact (3) and the moving contact (19) is 1.3-1.4 mm.

6. A normally open, quick break switch according to claim 1, wherein: The thickness of the break spring (22) is 0.12 mm, the left and right ends of the break spring (22) are stressed after assembly, and the rectangular block (8) and the connecting block (18) compress the break spring (22).

7. A normally open, quick break switch according to claim 1, wherein: The left and right ends of the transmission block (9) are provided with protruding blocks, and the protruding blocks are located above the two groups of break blocks (15).

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