Positioning device of universal change-over switch

Abstract

The utility model relates to the technical field of switches, and discloses a universal change-over switch positioning device which comprises a switch shell, twelve wiring terminals, a first spring seat, a first positioning column, a second spring seat, a second positioning column, a conduction reed, a rotating shaft, a positioning cam disc and a first limiting block. The twelve wiring terminals are embedded and fixed in the switch shell and are uniformly distributed, the twelve wiring terminals are divided into six groups, the first spring seat and the second spring seat are fixedly mounted on the top inner wall and the bottom inner wall of the switch shell respectively, the first positioning column is slidably mounted at the bottom of the first spring seat, and the second positioning column is slidably mounted at the bottom of the second spring seat. And the second positioning column is slidably mounted at the top of the second spring seat. The universal change-over switch has the following advantages and effects that when the universal change-over switch is powered off and is not used, the positioning cam disc can be fixed and positioned, the positioning cam disc and the rotating shaft are prevented from autonomously rotating, and the safety performance of the universal change-over switch in use is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of switches, in particular to a positioning device of a universal change-over switch. BACKGROUND

[0002] The universal change-over switch can convert different current household appliances into normal working voltage and current, is used for infrequently connected and disconnected circuits, realizes change-over of power supply and load, is a multi-grade type control multi-circuit master electric appliance, and is usually composed of an operating mechanism, a positioning device, contacts, a contact system, a rotating shaft and a handle. At present, the universal change-over switch is mainly used for change-over of various control circuits, phase change measurement control of a voltmeter and an ammeter, change-over of a power distribution device circuit and remote control. According to the search, the patent document with the authorized announcement number CN210628157U discloses a positioning device of a universal change-over switch, which comprises a shell and a rotating shaft, one end of the rotating shaft is fixedly connected with a positioning cam disc, the upper part and the lower part of the positioning cam disc are slidably connected with a first positioning column and a second positioning column respectively, the outer surfaces of the first positioning column and the second positioning column are provided with three conductive spring sheets, a plurality of wiring terminals can be connected to a plurality of complex circuits at the same time, space is saved, the universal change-over switch is prevented from impacting other electrical equipment when the cabinet door of the control cabinet is opened and closed, the traditional one-layer two-pair contact form of the universal change-over switch is improved into a one-layer six-pair contact form, diversified control requirements are met, the length of the universal change-over switch is shortened, and the universal change-over switch is convenient to install and does not need to be provided with a longer universal change-over switch.

[0003] The above scheme still has at least the following problems in actual use: when the universal change-over switch is switched to the first gear to be powered off, the position of the positioning cam disc is not fixed and positioned, the positioning cam disc and the rotating shaft can be automatically rotated due to the influence of external factors such as vibration, and the safety of the universal change-over switch during use is reduced.

[0004] Therefore, the positioning device of the universal change-over switch is proposed to solve the above problems. Invention content

[0005] The application aims to provide a positioning device of a universal change-over switch, which can fix and position the positioning cam disc when the universal change-over switch is not used in the powered-off state, avoid automatic rotation of the positioning cam disc and the rotating shaft, and improve the safety performance of the universal change-over switch during use.

[0006] The above technical problem of the present application is solved by the following technical scheme: a positioning device of a universal change-over switch, comprising a switch shell, wiring terminals, a first spring seat, a first positioning column, a second spring seat, a second positioning column, a conducting spring leaf, a rotating shaft, a positioning cam disc and a limiting block one, the number of the wiring terminals is twelve, the twelve wiring terminals are fixedly embedded in the switch shell and are uniformly distributed, the twelve wiring terminals are divided into six groups, the first spring seat and the second spring seat are fixedly installed on the top inner wall and the bottom inner wall of the switch shell respectively, the first positioning column is slidingly installed at the bottom of the first spring seat, the second positioning column is slidingly installed at the top of the second spring seat, the conducting spring leaf is fixedly installed on the first positioning column and the second positioning column, the rotating shaft is rotatably installed in the switch shell, the positioning cam disc is fixedly sleeved on the rear end of the rotating shaft, the first positioning column and the second positioning column are slidingly contacted with the positioning cam disc at the end close to each other, two positioning grooves are formed in the right side of the positioning cam disc, the limiting block one is fixedly installed on the left side wall of the positioning cam disc, an arc-shaped positioning slot is formed in the left side of the limiting block one, and a locking positioning assembly for fixing the positioning cam disc is arranged in the switch shell.

[0007] Further, the locking positioning assembly comprises a cross beam, a sliding rod, a return spring and a clamping ball, the cross beam is fixedly installed on the left inner wall of the switch shell, a sliding groove is formed in the right end of the cross beam, the left end of the sliding rod is slidingly installed in the sliding groove, the left end of the return spring is fixedly connected with the left inner wall of the sliding groove, the right end of the return spring is fixedly connected with the left end of the sliding rod, the clamping ball is fixedly installed on the right end of the sliding rod, and the right side of the clamping ball is slidingly installed in the arc-shaped positioning slot.

[0008] Further, limiting grooves are formed in the top inner wall and the bottom inner wall of the sliding groove, limiting blocks two are fixedly installed at the left end top and the left end bottom of the sliding rod, and the two limiting blocks two are slidingly installed in the corresponding limiting grooves.

[0009] Further, the outer surface of the clamping ball is a smooth surface, and the surface of the arc-shaped positioning slot is a frosted surface.

[0010] Further, the included angle between the limiting block one and the first positioning column is greater than the included angle between the first positioning column and the upper positioning groove.

[0011] Further, the included angle between the limiting block one and the second positioning column is greater than the included angle between the second positioning column and the lower positioning groove.

[0012] Further, the front end of the rotating shaft extends to the switch shell, and a handle is fixedly sleeved on the front end of the rotating shaft.

[0013] Further, the upper surface and the lower surface of the limiting block one are arc-shaped surfaces.

[0014] The application includes at least one of the following beneficial technical effects:

[0015] 1、The application can fix and position the positioning cam disc in the state of the universal switch being off and not in use by using the locking and positioning assembly composed of the cross beam, the sliding rod, the return spring and the ball, so as to avoid the independent rotation of the positioning cam disc and the rotating shaft and improve the safety performance of the universal switch in use.

[0016] 2、The upper surface and the lower surface of the limiting block are provided with arc surfaces, so that the ball can be smoothly and smoothly slid into the arc positioning groove in the process of rotating the rotating shaft and the positioning cam disc by the handle, so as to realize the effect of smoothly and effectively fixing and positioning the positioning cam disc. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of the embodiment.

[0018] Figure 2 is a schematic diagram of the front view of the structure of the embodiment.

[0019] Figure 3 is Figure 2 an enlarged structure schematic diagram of part A.

[0020] In the figure, 1 is a switch housing, 2 is a terminal, 3 is a first spring seat, 4 is a first positioning column, 5 is a second spring seat, 6 is a second positioning column, 7 is a conducting spring leaf, 8 is a rotating shaft, 9 is a positioning cam disc, 10 is a positioning groove, 11 is a limiting block one, 12 is an arc positioning groove, 13 is a cross beam, 14 is a sliding groove, 15 is a sliding rod, 16 is a return spring, 17 is a ball, 18 is a limiting groove, 19 is a limiting block two, and 20 is a handle. DETAILED DESCRIPTION

[0021] The technical solutions of the application will be described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the application, not all. Based on the embodiments of the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0022] Referring to Figure 1 , Figure 2 and Figure 3 , the application provides a positioning device of a universal switch, which comprises a switch housing 1, a terminal 2, a first spring seat 3, a first positioning column 4, a second spring seat 5, a second positioning column 6, a conducting spring leaf 7, a rotating shaft 8, a positioning cam disc 9 and a limiting block one 11, wherein:

[0023] The number of the connecting terminals 2 is twelve, and the twelve connecting terminals 2 are evenly distributed and fixed in the switch housing 1, and the twelve connecting terminals 2 are divided into six groups. By arranging multiple connecting terminals 2, multiple complex lines can be connected at the same time, and space is saved. The first spring seat 3 and the second spring seat 5 are fixedly installed on the top inner wall and the bottom inner wall of the switch housing 1 respectively. The first positioning column 4 is slidingly installed at the bottom of the first spring seat 3, and the second positioning column 6 is slidingly installed at the top of the second spring seat 5. The first positioning column 4 and the second positioning column 6 are both fixedly installed with the conducting spring leaf 7. The rotating shaft 8 is rotatably installed in the switch housing 1. The positioning cam disc 9 is fixedly sleeved on the rear end of the rotating shaft 8. The first positioning column 4 and the second positioning column 6 are both in sliding contact with the positioning cam disc 9 at the end close to each other. Two positioning grooves 10 are formed on the right side of the positioning cam disc 9. The limiting block one 11 is fixedly installed on the left side wall of the positioning cam disc 9. Among them:

[0024] An arc-shaped positioning groove 12 is formed on the left side of the limiting block one 11. A locking positioning assembly for fixing the positioning cam disc 9 is arranged in the switch housing 1. The locking positioning assembly comprises a cross beam 13, a sliding rod 15, a return spring 16 and a clamping ball 17. The cross beam 13 is fixedly installed on the left inner wall of the switch housing 1. A sliding groove 14 is formed on the right end of the cross beam 13. The left end of the sliding rod 15 is slidingly installed in the sliding groove 14. The left end of the return spring 16 is fixedly connected with the left inner wall of the sliding groove 14. The right end of the return spring 16 is fixedly connected with the left end of the sliding rod 15. The clamping ball 17 is fixedly installed on the right end of the sliding rod 15. The right side of the clamping ball 17 is slidingly installed in the arc-shaped positioning groove 12. By clamping the clamping ball 17 in the arc-shaped positioning groove 12, the position of the limiting block one 11 can be fixed and positioned, that is, the positioning cam disc 9 is fixed and positioned, so that the positioning cam disc 9 and the rotating shaft 8 are prevented from rotating automatically. By the elastic force of the return spring 16, the sliding rod 15 and the clamping ball 17 can be automatically reset.

[0025] In this embodiment, it should be noted that one side of the first spring seat 3 and the second spring seat 5 is fixedly connected with a spring. The first positioning column 4 and the second positioning column 6 are respectively fixedly connected with the corresponding springs. Conductive contacts are arranged on both sides of the lower surface of the six conducting spring leaves 7. By arranging multiple conducting spring leaves 7, the traditional universal switch is improved from one layer of two pairs of contacts to one layer of six pairs of contacts, which can meet the diversified control requirements and shorten the length of the universal switch. Furthermore, an insulating sheet is fixedly connected in the switch housing 1. The insulating sheet has four strips. The insulating sheet is used to prevent the same side of different conductive sheets from contacting each other, so as to avoid generating a large electric arc and improve the safety protection performance. One side of the twelve connecting terminals 2 is fixedly connected with a conductive sheet. One end of the conductive sheet is provided with a conductive contact.

[0026] In the embodiment, in order to limit the sliding stroke of the sliding rod 15 in the sliding groove 14 and to ensure that the sliding rod 15 can smoothly slide horizontally and linearly in the sliding groove 14, a limiting groove 18 is formed on the top inner wall and the bottom inner wall of the sliding groove 14, and a limiting block two 19 is fixedly installed on the top left end and the bottom left end of the sliding rod 15, and the two limiting blocks two 19 are respectively slidably installed in the corresponding limiting grooves 18.

[0027] In the embodiment, in order to ensure that a certain force is applied to control the ball 17 to slide out of the arc-shaped positioning groove 12, the outer surface of the ball 17 is a smooth surface, and the surface of the arc-shaped positioning groove 12 is a frosted surface.

[0028] In the embodiment, in order to ensure that the bottom end of the first positioning column 4 can be smoothly inserted into the positioning groove 10 above, the included angle between the limiting block one 11 and the first positioning column 4 is greater than the included angle between the first positioning column 4 and the positioning groove 10 above.

[0029] In the embodiment, in order to ensure that the bottom end of the second positioning column 6 can be smoothly inserted into the positioning groove 10 below, the included angle between the limiting block one 11 and the second positioning column 6 is greater than the included angle between the second positioning column 6 and the positioning groove 10 below.

[0030] In the embodiment, in order to facilitate manual rotation of the rotating shaft 8, a handle 20 is fixedly installed on the front end of the rotating shaft 8 which extends to the switch housing 1.

[0031] In the embodiment, in order to ensure that the ball 17 can smoothly slide into the arc-shaped positioning groove 12, the upper surface and the lower surface of the limiting block one 11 are both arc-shaped surfaces.

[0032] Through the above structure, the positioning device of the universal switch provided by the application can fix and position the positioning cam disc 9 when the universal switch is not in use, so as to avoid self-rotation of the positioning cam disc 9 and the rotating shaft 8, thereby improving the safety performance of the universal switch in use. When operating, the handle 20 is counterclockwise rotated by hand, the handle 20 drives the rotating shaft 8 and the positioning cam disc 9 to counterclockwise rotate, so that the positioning groove 10 above is counterclockwise rotated to be aligned with the first positioning column 4, and under the elastic force of the spring above, the bottom end of the first positioning column 4 is inserted into the positioning groove 10 above, the first positioning column 4 drives the three conductive spring leaves 7 installed thereon to vertically move downward, so that the conductive contacts on both sides of the three conductive spring leaves 7 above are respectively in contact with the conductive contacts on one side of the corresponding terminal 2, and at this time, the three groups of terminal 2 above are electrified.

[0033] By clockwise rotating the handle 20, the handle 20 drives the rotating shaft 8 and the positioning cam disc 9 to rotate clockwise, so that the lower positioning groove 10 rotates clockwise to align with the second positioning column 6, and under the elastic force of the lower spring, the top end of the second positioning column 6 can be controlled to be inserted into the lower positioning groove 10, the second positioning column 6 drives the three conductive reeds 7 installed thereon to move vertically upward, so that the conductive contacts on both sides of the lower three conductive reeds 7 respectively contact the conductive contacts on one side of the corresponding terminal 2, at this time, the lower three groups of terminal 2 are powered on;

[0034] When it is needed to turn off the universal switch, the handle 20 drives the rotating shaft 8 and the positioning cam disc 9 to rotate, the limiting block one 11 rotates with the positioning cam disc 9, so that the outer rotation of the limiting block one 11 is in contact with the arc surface on one side of the ball 17, and then a little more force is applied to continue to rotate the handle 20, with the limiting block one 11 continuing to rotate with the positioning cam disc 9, the ball 17 and the slide rod 15 are pushed to move horizontally towards the beam 13, at this time, the return spring 16 is gradually compressed to generate elastic force, when the arc-shaped positioning groove 12 on the limiting block one 11 aligns with the ball 17, under the elastic force of the return spring 16, the ball 17 can be automatically clamped into the arc-shaped positioning groove 12, at this time, the position of the positioning cam disc 9 can be fixed and positioned, which can effectively avoid the self-rotation of the positioning cam disc 9 and the rotating shaft 8, the next time the universal switch needs to be powered on, the handle 20 is rotated with a certain force, which can make the ball 17 gradually slide out of the arc-shaped positioning groove 12, and then the handle 20 can be easily rotated to power on the universal switch.

Claims

1. A positioning device for a universal transfer switch, characterized in that: The switch comprises a housing (1), a terminal (2), a first spring seat (3), a first positioning column (4), a second spring seat (5), a second positioning column (6), a conducting spring (7), a rotating shaft (8), a positioning cam disc (9) and a limit block (11), wherein the number of the terminal (2) is twelve, the twelve terminal (2) are all fixed on the switch housing (1) and are evenly distributed, the twelve terminal (2) are divided into six groups, the first spring seat (3) and the second spring seat (5) are respectively fixed on the top inner wall and the bottom inner wall of the switch housing (1), the first positioning column (4) is slidably mounted on the bottom of the first spring seat (3), and the second positioning column (6) is slidably mounted on the second spring seat (5), the first positioning column (4) and the second positioning column (6) are both fixedly mounted with a conducting spring (7), the rotating shaft (8) is rotatably mounted in the switch housing (1), the positioning cam disc (9) is fixedly mounted on the rear end of the rotating shaft (8), the first positioning column (4) and the second positioning column (6) are both in sliding contact with the positioning cam disc (9), the right side of the positioning cam disc (9) is provided with two positioning grooves (10), the limit block (11) is fixedly mounted on the left side wall of the positioning cam disc (9), the left side of the limit block (11) is provided with an arc-shaped positioning groove (12), and a locking positioning component for fixing the positioning cam disc (9) is provided in the switch housing (1).

2. A positioning device for a universal transfer switch according to claim 1, characterized in that: The locking positioning assembly includes a crossbeam (13), a slide rod (15), a return spring (16) and a snap ball (17). The crossbeam (13) is fixedly mounted on the left inner wall of the switch housing (1). A slide groove (14) is provided at the right end of the crossbeam (13). The left end of the slide rod (15) is slidably mounted in the slide groove (14). The left end of the return spring (16) is fixedly connected to the left inner wall of the slide groove (14). The right end of the return spring (16) is fixedly connected to the left end of the slide rod (15). The snap ball (17) is fixedly mounted on the right end of the slide rod (15). The right side of the snap ball (17) is slidably mounted in the arc-shaped positioning groove (12).

3. The positioning device for a universal transfer switch according to claim 2, characterized in that: The top inner wall and the bottom inner wall of the slide groove (14) are both provided with a limiting groove (18), and the left top and the left bottom of the slide rod (15) are both fixedly installed with a limiting block 2 (19), and the two limiting blocks 2 (19) are respectively slidably installed in the corresponding limiting grooves (18).

4. The positioning device for a universal transfer switch according to claim 2, characterized in that: The outer surface of the clamping ball (17) is a smooth surface, and the surface of the arc-shaped positioning groove (12) is a frosted surface.

5. The positioning device for a universal transfer switch according to claim 1, characterized in that: The angle between the first limiting block (11) and the first positioning column (4) is greater than the angle between the first positioning column (4) and the upper positioning groove (10).

6. The positioning device for a universal transfer switch according to claim 1, characterized in that: The angle between the first limiting block (11) and the second positioning column (6) is greater than the angle between the second positioning column (6) and the positioning groove (10) below.

7. The positioning device for a universal transfer switch according to claim 1, characterized in that: The front end of the rotating shaft (8) extends to the switch housing (1), and a handle (20) is fixedly mounted on the front end of the rotating shaft (8).

8. The positioning device for a universal transfer switch according to claim 1, characterized in that: The upper surface and the lower surface of the limit block 1 (11) are both arc-shaped structures.

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