CN113205971A

CN113205971A - Operating mechanism of three-position switch

Info

Publication number: CN113205971A
Application number: CN202110434795.7A
Authority: CN
Inventors: 唐冰; 袁柏芝
Original assignee: Shanghai Bapei Switch Equipment Co ltd
Current assignee: Shanghai Bapei Switch Equipment Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-08-03

Abstract

The invention discloses an operating mechanism of a three-position switch, which comprises: the front end of the first transmission shaft is provided with a limiting claw, and a first gear is arranged on the first transmission shaft; the output end of the driving device is provided with a clutch, the clutch is connected with a third transmission shaft, the third transmission shaft is meshed with a second gear, and the second gear is coaxially connected with a third gear; the third gear drives the transmission structure to rotate, and the transmission structure drives the first gear to rotate the first transmission shaft; the transmission shaft is in transmission connection with a seventh gear, and a coaxial directional sleeve is arranged on the seventh gear; the directional sleeve is provided with a shifting pin; one end of the second transmission shaft is provided with an indexing claw matched with the shifting pin, and the other end of the second transmission shaft is provided with a cam; the cam is arranged corresponding to the microswitch; the cam is connected with a braking mechanism matched with the limiting claw; the middle partition plate is provided with the braking mechanism.

Description

Operating mechanism of three-position switch

Technical Field

The invention relates to an operating mechanism of a three-position switch, belonging to the technical field of switches.

Background

The existing isolating switch generally has the problems of complex structure and defects of a limiting device. The isolating switch can continue to move after being switched on and off in place until the mechanism is damaged, so that misoperation or personal safety and property loss are often caused to people. In order to solve the above problems, there is a need to improve the existing operating mechanism, optimize the structure and improve the operating stability of the mechanism.

Disclosure of Invention

The invention aims to solve the problem that in the prior art, after the disconnecting switch is switched on and off in place, the disconnecting switch can continue to move until the disconnecting switch is damaged, and provides an operating mechanism of a three-position switch.

An operating mechanism for a three-position switch comprising:

the front end of the first transmission shaft is provided with a limiting claw, and the first transmission shaft is provided with a first gear;

the output end of the driving device is provided with a clutch, the clutch is connected with a third transmission shaft, the third transmission shaft is meshed with a second gear, and the second gear is coaxially connected with a third gear;

the third gear drives the transmission structure to rotate, and the transmission structure drives the first gear to rotate the first transmission shaft;

the transmission shaft is in transmission connection with a seventh gear, and a coaxial directional sleeve is arranged on the seventh gear; the directional sleeve is provided with a shifting pin;

one end of the second transmission shaft is provided with an indexing claw matched with the shifting pin, and the other end of the second transmission shaft is provided with a cam;

the microswitch is arranged corresponding to the cam; the cam is connected with a braking mechanism matched with the limiting claw;

the middle partition plate is provided with the braking mechanism.

Further, the transmission structure comprises an output shaft, and a gear five and a gear four are mounted on the output shaft I; the fifth gear is meshed with the first gear; the gear four is meshed with the gear three to drive the output shaft to rotate.

Furthermore, a gear is arranged at one end of the transmission shaft, a gear six is meshed with the gear through the gear, and the gear six is meshed with the gear seven.

Furthermore, the braking mechanism comprises a connecting plate, a slideway is arranged on the middle partition plate, one end of the connecting plate is provided with a limiting house matched with the limiting claw, and the other end of the connecting plate is provided with a coil; a pressing plate is elastically arranged on the middle clapboard corresponding to the position of the cam, and a limiting block is elastically arranged on the connecting plate right below the pressing plate; and the limiting house is provided with a positioning pin for resisting the limiting block.

Further, the limiting sleeve is sleeved with a guide sleeve.

Furthermore, the end part of the second transmission shaft, which is far away from the indexing claw, is provided with a sign.

Furthermore, a pin for fixing the limiting claw is arranged on the first transmission shaft.

Further, the driving device is a motor.

Compared with the prior art, the invention has the following beneficial effects: the invention drives the operating mechanism to be distributed at three different positions through the matching of the driving device, the transmission structure and the braking mechanism with the cam, effectively prevents the problem that the isolating switch cannot continue to move after the switch-on and the switch-off of the isolating switch are in place through the braking mechanism, reduces the damage of the operating mechanism, improves the quality of the operating mechanism, and has compact and simple structure, low manufacturing cost and high stability.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a left side view of the present invention;

FIG. 4 is a schematic front view of the present invention;

FIG. 5 is a right side view of the present invention;

FIG. 6 is a schematic view of the present invention in connection with a microswitch;

FIG. 7 is a schematic illustration of the inoperative brake mechanism of the present invention;

FIG. 8 is a schematic view of the operation of the braking mechanism of the present invention;

FIG. 9 is a schematic diagram illustrating the opening state of the present invention;

FIG. 10 is a schematic diagram of a closing state of the present invention;

FIG. 11 is a schematic diagram of the grounding state of the present invention;

in the figure: 1. an output shaft; 2. a first transmission shaft; 3. a second transmission shaft; 4. a third transmission shaft; 5. a clutch; 6. a motor; 7. a second gear; 8. a third gear; 9. a fourth gear; 10. a fifth gear; 11. a sixth gear; 12. a seventh gear; 13. pulling a pin; 14. a positioning sleeve; 15. an indexing claw; 16. a first gear; 17. a cam; 18. pressing a plate; 19. positioning pins; 20. a limiting block; 21. a guide sleeve; 22. connecting plates; 23. a limiting claw; 24. a pin; 25. a coil; 26. limiting the position; 27. a first tension spring; 28. a tension spring II; 29. a sign; 30. a support; 31. a support bar; 32. a middle partition plate; 33. a front plate; 34. a partition plate; 35. a micro switch.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1 to 11, there is disclosed an operating mechanism of a three-position switch, including:

the front end of the first transmission shaft 2 is provided with a limiting claw 23, and the first transmission shaft 2 is provided with a first gear 16;

the output end of the driving device is provided with a clutch 5, the clutch 5 is connected with a transmission shaft III 4, the transmission shaft III 4 is meshed with a gear II 7, and the gear II 7 is coaxially connected with a gear III 8;

the gear III 8 drives the transmission structure to rotate, and the transmission structure drives the gear I16 to rotate the transmission shaft I2;

the first transmission shaft 2 is in transmission connection with a seventh gear 12, and a coaxial directional sleeve 14 is arranged on the seventh gear 12; the orientation sleeve 14 is provided with a poking pin 13;

one end of the second transmission shaft 3 is provided with an indexing claw 15 matched with the shifting pin 13, and the other end of the second transmission shaft 3 is provided with a cam 17;

as shown in fig. 9-11, the micro switch 35, the cam 17 is disposed corresponding to the micro switch 35; the cam 17 is connected with a braking mechanism matched with the limiting claw 23; the rotating position of the cam 17 is divided into three states, namely a brake opening state, a brake closing state and a grounding state;

as shown in fig. 6, the middle partition plate 32, the braking mechanism is arranged on the middle partition plate 32, the support rod 31 passes through the middle partition plate 32, the front end of the support rod 31 is connected with the front plate 33, and the rear end is connected with the support 30.

As shown in fig. 1, the transmission structure comprises an output shaft one 1, and the output shaft one 1 is provided with a gear five 10 and a gear four 9; the fifth gear 10 is meshed with the first gear 16; the gear four 9 is meshed with the gear three 8 to drive the output shaft 1 to rotate.

In this embodiment, a gear is disposed at the end of the first transmission shaft 2, a gear six 11 is engaged with the gear six 11, and the gear six 11 is engaged with a gear seven 12.

In the embodiment, the braking mechanism comprises a connecting plate 22 with a slideway arranged on the middle partition plate 32, one end of the connecting plate 22 is provided with a limiting house 26 matched with the limiting claw 23, and the other end is provided with a coil 25; a pressing plate 18 is elastically arranged on the middle partition plate 32 corresponding to the position of the cam 17, and a limiting block 20 is elastically arranged on the connecting plate 22 right below the pressing plate 18; the limiting block 26 is provided with a positioning pin 19 for resisting the limiting block 20; as shown in fig. 7 and 8, the pressing plate 18 is provided with a waist-shaped groove, a bolt is arranged at the waist-shaped groove and used for sliding the pressing plate 18, a first tension spring 27 is arranged between the bottom of the pressing plate 18 and the bolt, when the cam 17 presses the pressing plate 18, the pressing plate 18 can automatically rebound the connecting plate 22 and is provided with a second tension spring 28, and when the pressing plate 18 presses the limiting block 20 to be separated from the positioning pin 19, the limiting block 26 is abutted against the limiting claw 23; the limiting block 20 is provided with a waist-shaped hole, a bolt is arranged in the waist-shaped hole, a tension spring is also arranged between the bottom of the limiting block 20 and the bolt, and when the pressing block 18 moves upwards, the limiting block 20 automatically resets and is blocked by the positioning pin 19.

Specifically, the limiting housing 26 is sleeved with a guide sleeve 21, and the guide sleeve 21 is fixed on the connecting plate 22 and plays a role in guiding the limiting housing 26.

In this embodiment, an indication board 29 is arranged at the end of the second transmission shaft 3 far away from the indexing claw 15, and three states of opening, closing and grounding are written on the indication board to indicate the state of the mechanism in place, so that the mechanism can be distinguished by workers conveniently.

As shown in fig. 1, a pin 24 for fixing the limiting claw 23 is arranged on the first transmission shaft 2, the limiting claw 23 is sleeved at one end of the first transmission shaft 2 and is fixed through the pin 24, and disassembly is facilitated.

In this embodiment, the driving device is a motor 6, and a partition 34 is provided at a front end of the motor 6 for fixing the motor 6.

When the electric motor is used, when the motor 6 and the clutch 5 are electrified at the same time, the output shaft III 4 is meshed with the gear II 7, the gear II 7 is connected with the gear III 8, and the gear III 8 is meshed with the gear IV 9 to drive the output shaft 1 to transfer;

the gear seven 12 rotates and the pin 36 pulls the upper indexing claw 15 at the tail end of the transmission shaft II 3 to drive the transmission shaft II 3 to rotate, the cam 17 switches the microswitch 35 to act when the transmission shaft II 3 rotates, the cam 17 at the front end of the transmission shaft II 3 presses down the pressing plate 18, the pressing plate 18 pushes the limiting plate 20 open, the connecting plate 22 moves towards the left under the reset of the tension spring, the limiting tongue 26 clamps the limiting claw 23 of the transmission shaft 2, and the output shaft stops moving. When the coil 25 is electrified, the connecting plate 22 is impacted, the connecting plate 22 moves rightwards, the limiting plate 20 is clamped by the positioning pin 19, the limiting tongue 26 is separated from the limiting claw 23, and the output shaft 1 can rotate to output;

the mechanism can also be manually operated, when the mechanism is manually operated, an operating handle is inserted into the transmission shaft I2, the power supply of a control loop of the clutch 5 and the motor 6 is cut off, and the output shaft III 4 of the clutch 5 stops acting.

In summary, the following steps: the invention drives the operating mechanism to be distributed at three different positions by matching the driving device, the transmission structure, the braking mechanism and the cam, and has the advantages of compact and simple structure, low manufacturing cost and high stability.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. An operating mechanism of a three-position switch is characterized by comprising:

the front end of the first transmission shaft (2) is provided with a limiting claw (23), and the first transmission shaft (2) is provided with a first gear (16);

the output end of the driving device is provided with a clutch (5), the clutch (5) is connected with a third transmission shaft (4), the third transmission shaft (4) is meshed with a second gear (7), and the second gear (7) is coaxially connected with a third gear (8);

the gear III (8) drives the transmission structure to rotate, and the transmission structure drives the gear I (16) to rotate the transmission shaft I (2);

the first transmission shaft (2) is in transmission connection with a seventh gear (12), and a coaxial directional sleeve (14) is arranged on the seventh gear (12); the orientation sleeve (14) is provided with a shifting pin (13);

one end of the second transmission shaft (3) is provided with an indexing claw (15) matched with the shifting pin (13), and the other end of the second transmission shaft (3) is provided with a cam (17);

the microswitch (35) is matched with the cam (17) in arrangement; the cam (17) is connected with a braking mechanism matched with the limiting claw (23);

the middle partition plate (32), the brake mechanism is arranged on the middle partition plate (32).

2. An operating mechanism of a three-position switch according to claim 1, wherein the transmission structure comprises an output shaft (1), and the output shaft (1) is provided with a fifth gear (10) and a fourth gear (9); the fifth gear (10) is meshed with the first gear (16); the gear four (9) is meshed with the gear three (8) to drive the output shaft (1) to rotate.

3. The operating mechanism of the three-position switch as claimed in claim 1, wherein the end of the first transmission shaft (2) is provided with a gear, a gear six (11) is meshed through the gear, and the gear six (11) is meshed with a gear seven (12).

4. The operating mechanism of a three-position switch according to claim 1, characterized in that the braking mechanism comprises a connecting plate (22) arranged on the middle partition plate (32) in a sliding manner, one end of the connecting plate (22) is provided with a limiting hook (26) matched with the limiting claw (23), and the other end is provided with a coil (25); a pressing plate (18) is elastically arranged on the middle partition plate (32) corresponding to the position of the cam (17), and a limiting block (20) is elastically arranged on the connecting plate (22) corresponding to the position under the pressing plate (18); the limiting block (26) is provided with a positioning pin (19) for resisting the limiting block (20).

5. Operating mechanism for a three-position switch according to claim 4, characterized in that the limit housing (26) is provided with a guide sleeve (21).

6. An operating mechanism as claimed in claim 1, characterised in that the end of the second drive shaft (3) remote from the indexing pawl (15) is provided with a sign (29).

7. The operating mechanism of a three-position switch according to claim 1, characterized in that the first transmission shaft (2) is provided with a pin (24) for fixing a limiting claw (23).

8. Operating mechanism for a three-position switch according to claim 1, characterized in that the drive means is an electric motor (6).