CN217114258U - Auxiliary switch of circuit breaker - Google Patents

Abstract

An auxiliary switch of a circuit breaker. The problems that the structure of the existing auxiliary switch in a frame circuit breaker adopting a double-contact auxiliary switch is complex, the cost is high and the occupied space is large are solved. It includes the support body, the support body on be equipped with ejector pin, guide and auxiliary switch group, auxiliary switch group including a plurality of micro-gap switches that set up side by side, the ejector pin on be equipped with the roof, the ejector pin pass the guide and with the guide cooperation of sliding, the ejector pin through the vertical motion control of drive roof thereby micro-gap switch realize the signal switching. The beneficial effects of the utility model are that, the micro-gap switch that adopts to set up side by side can reliably realize the signal switching as auxiliary switch, and the micro-gap switch that sets up side by side simultaneously makes signal transmission synchronization performance good, and has simplified the structure and the assembly of product greatly for product simple structure, occupation space are few, with low costs, convenient assembling, action are reliable, long service life.

Description

Auxiliary switch of a circuit breaker

technical field

The utility model relates to a universal circuit breaker, in particular to an auxiliary switch of the circuit breaker.

Background technique

Universal circuit breaker, also known as frame circuit breaker, is a mechanical switch that can make, carry and break current under normal circuit conditions, and can also make, carry, and break current under specified abnormal circuit conditions. electrical appliances. Universal circuit breakers are used to distribute electric energy and protect lines and power equipment from overload, undervoltage, short circuit, etc. Such circuit breakers generally have a steel frame in which all components are installed. It has a large capacity, can be equipped with multi-function releases and more auxiliary contacts, and has high breaking capacity and thermal stability, so it is often used in places requiring high breaking capacity and selective protection.

The auxiliary switch of the existing universal circuit breaker usually adopts a double-contact auxiliary switch. The double-contact auxiliary switch has a complex structure, high cost and large space occupation, which is not conducive to the assembly of other components, and in order to make the contacts reliable It is usually driven by a complex structure, so that the mechanism that drives the auxiliary switch also takes up a lot of space, which is not conducive to the installation and assembly of other components. Moreover, the double-contact auxiliary switch is usually set back and forth. When it is switched, the There will also be a certain time difference in the signal output, which will have a certain adverse effect on the mechanism, resulting in poor product accuracy.

Utility model content

In order to solve the problems of complex structure, high cost and large space occupation in the frame circuit breaker using the double-contact auxiliary switch of the existing auxiliary switch in the background technology, the utility model provides an auxiliary switch of the circuit breaker.

The technical scheme of the utility model is as follows: an auxiliary switch of a circuit breaker, comprising a frame body, and the frame body is provided with a push rod, a guide member and an auxiliary switch group, and the auxiliary switch group comprises a plurality of juxtaposed switches. Micro switch, the top rod is provided with a top plate, the top rod passes through the guide member and is slidingly matched with the guide member, and the top rod controls the switching of the micro switch by driving the vertical movement of the top plate So as to realize the signal switching.

As a further improvement of the present invention, the top plate is fixedly arranged on the upper part of the ejector rod, and the ejector rod is arranged through the guide piece and moves linearly up and down relative to the guide piece under the action of external force.

As a further improvement of the present invention, the ejector rod is provided with a reset piece for resetting the ejector rod, and the reset piece is sleeved on the lower part of the ejector rod and abuts against the guide piece.

As a further improvement of the present invention, the micro switch includes an elastic part, and the top rod drives the top plate to move vertically along the guide to push the elastic part of the micro switch to move under the action of external force; the reset piece When the external force of the ejector bar disappears, the ejector bar is used to drive the top plate to reset.

As a further improvement of the present invention, the micro switch includes a first elastic foot and a second elastic foot, the top plate is arranged in a "T" shape, and the transverse part of the T-shaped top plate is used for connecting with the first elastic foot of the micro switch. The two elastic feet are matched to drive the action of the second elastic feet, and the vertical part of the T-shaped top plate is used to be fixed on the top rod.

As a further improvement of the present invention, the first elastic feet and the second elastic feet cooperate with each other and are arranged in a "V" shape, the first elastic feet are in conflict with the micro switch, and the second elastic feet For conflicting with the top plate, the first elastic feet and the second elastic feet intersect at the outer side of the end of the micro switch.

As a further improvement of the present invention, the upper part of the top rod is provided with a through hole, the top plate is inserted into the through hole of the top rod and is fixedly connected with the top rod through a fixing piece, and the lower part of the top rod is provided with a hole for reducing Rollers with low frictional resistance.

As a further improvement of the present invention, there are two guide members, and the two guide members are arranged in a "U" shape, and the two guide members cooperate with each other to form a "mouth" shape.

As a further improvement of the present utility model, the frame body includes two side plates, the side plates are provided with mounting posts, different micro switches are connected through the mounting posts, and adjacent micro switches are arranged between There are partitions.

As a further improvement of the present invention, the top plate is arranged above the guide member, the side plate is provided with a guide hole or a guide groove, and the top plate is inserted into the guide hole or guide groove of the side plate and is connected with the side plate. Board slip fit.

The beneficial effect of the utility model is that the micro-switches arranged in parallel are used as auxiliary switches, so that the signal switching can be reliably realized; at the same time, the micro-switches arranged in parallel make the signal transmission synchronization performance good, and the structure and assembly of the product are greatly simplified, so that the The product has the advantages of simple structure, less space occupation, low cost, convenient assembly, reliable action and long service life.

Description of drawings

1 is a schematic structural diagram of an embodiment of the present invention.

2 is a schematic diagram of an explosion structure of an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of the micro switch 5 in FIG. 2 .

FIG. 4 is a schematic structural diagram of the guide member 3 in FIG. 2 .

FIG. 5 is a schematic structural diagram of the top plate 6 in FIG. 2 .

In the figure, 1, frame body; 11, side plate; 111, guide hole; 12, installation column; 13, partition plate; 2, ejector rod; 21, through hole; 22, fixing part; 23, roller; 3, Guide; 4. Auxiliary switch group; 5. Micro switch; 51, elastic part; 511, first elastic foot; 512, second elastic foot; 52, bump; 6, top plate; 61, transverse part; 62, Vertical part; 7. Reset parts.

Detailed ways

Embodiments of the present utility model are further described below in conjunction with the accompanying drawings:

As shown in FIG. 1 combined with FIGS. 2-5, an auxiliary switch of a circuit breaker includes a frame body 1, and the frame body 1 is provided with a push rod 2, a guide member 3 and an auxiliary switch group 4. The auxiliary switch group 4 The switch group 4 includes a plurality of micro-switches 5 arranged in parallel. The top rod 2 is provided with a top plate 6. The top rod 2 passes through the guide member 3 and slides with the guide member 3. The rod 2 controls the switching of the micro switch 5 by driving the vertical movement of the top plate 6 to realize signal switching. The beneficial effect of the utility model is that the micro-switches arranged in parallel are used as auxiliary switches, so that the signal switching can be reliably realized; at the same time, the micro-switches arranged in parallel make the signal transmission synchronization performance good, and the structure and assembly of the product are greatly simplified, so that the The product has the advantages of simple structure, less space occupation, low cost, convenient assembly, reliable action and long service life.

The top plate 6 is fixedly arranged on the upper part of the top rod 2 , and the top rod 2 is arranged through the guide member 3 and moves linearly up and down relative to the guide member 3 under the action of external force. Specifically, the top plate can move up and down linearly relative to the guide member in the hole of the guide member, so that the guide member can also guide the ejector rod, the structure is simple, and the control is convenient and reliable.

The ejector rod 2 is provided with a reset member 7 for resetting the ejector rod 2 . The reset member 7 is sleeved on the lower portion of the ejector rod 2 and abuts against the guide member 3 . The setting of the reset piece is convenient for the reset of the ejector rod and the top plate. Specifically, the micro switch 5 includes an elastic part 51, and the top rod 2 drives the top plate 6 to move vertically along the guide 3 to push the elastic part 51 of the micro switch 5 to move under the action of external force; the The reset member 7 drives the top plate 6 to reset through the top rod 2 when the external force of the top rod disappears. In this way, the micro switch can be reliably switched, so as to reliably control the signal switching of the product. The top rod drives the vertical linear motion of the top plate to convert the normally open and normally closed contacts of the micro switch, so as to realize the function of the auxiliary switch switching circuit.

The micro switch 5 includes a first elastic foot 511 and a second elastic foot 512 , the top plate 6 is arranged in a "T" shape, and the transverse part 61 of the T-shaped top plate 6 The elastic feet 512 cooperate to drive the second elastic feet 512 to act, and the vertical portion 62 of the T-shaped top plate 6 is used to be fixed on the top rod 2 . Specifically, the first elastic foot and the second elastic foot constitute the elastic part of the micro switch. More specifically, the micro switch 5 is provided with a bump 52, and the bump makes the An elastic foot is slightly away from the bottom surface of the micro switch, so as to facilitate elastic deformation and avoid damage to the micro switch during excessive movement. Such a structure can reliably connect with the ejector rod through the vertical part of the T-shaped top plate, and can reliably drive multiple micro switches to act synchronously through the lateral part of the T-shaped top plate, and the product has good synchronization performance.

The first elastic feet 511 and the second elastic feet 512 cooperate with each other and are arranged in a "V" shape, the first elastic feet 511 are in conflict with the micro switch 5, and the second elastic feet 512 are used for The top plate 6 is in conflict, and the first elastic feet 511 and the second elastic feet 512 intersect at the outer side of the end of the micro switch 5 . Such a structure makes the switching of the micro-switch signal reliable. Specifically, the micro switch is a shrapnel type micro switch.

The upper part of the top rod 2 is provided with a through hole 21, and the top plate 6 is inserted into the through hole 21 of the top rod 2 and is fixedly connected with the top rod 2 through a fixing member 22. Roller 23 with low frictional resistance. Such a structure facilitates the movement of the ejector rod, reduces resistance, and facilitates the fixing of the top plate. Specifically, the fixing member is arranged in the countersunk hole of the ejector rod to avoid interference during the movement of the ejector rod.

There are two guide members 3, and the two guide members 3 are arranged in a "U" shape, and the two guide members 3 cooperate with each other to form a "mouth" shape. Specifically, the frame body 1 includes two side plates 11 . The side plates 11 are provided with mounting posts 12 . Different micro switches 5 are connected through the mounting posts 12 , and adjacent micro switches 5 There are partitions 13 therebetween. The guide piece is arranged between the two side plates, which increases the strength of the product. At the same time, the setting of the "mouth" shape reduces the material used for the product, and at the same time, it can guide the ejector rod reliably. More specifically, the top plate 6 is provided above the guide member 3 , the side plate 11 is provided with a guide hole 111 or a guide groove, and the top plate 6 is inserted into the guide hole 111 or the guide groove of the side plate 11 Inside and sliding fit with the side plate 11 . The guide holes or guide grooves on the side plates can also guide the movement of the top plate.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "horizontal", "upper", "lower", "front", "rear", "left", "right", The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplified description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

Note to all technicians: although the present utility model has been described according to the above-mentioned specific embodiments, the utility model idea of the present utility model is not limited to this utility model, and any modification using the present utility model idea will be incorporated into the patent right of this patent. within the scope of protection.

Claims (10)

1. The auxiliary switch of the circuit breaker comprises a frame body (1) and is characterized in that an ejector rod (2), a guide piece (3) and an auxiliary switch group (4) are arranged on the frame body (1), the auxiliary switch group (4) comprises a plurality of micro switches (5) which are arranged in parallel, a top plate (6) is arranged on the ejector rod (2), the ejector rod (2) penetrates through the guide piece (3) and is in sliding fit with the guide piece (3), and the ejector rod (2) controls the micro switches (5) to switch through driving the vertical movement of the top plate (6) so as to realize signal switching.

2. The auxiliary switch of a circuit breaker according to claim 1, wherein the top plate (6) is fixedly arranged on the upper portion of the push rod (2), and the push rod (2) passes through the guide member (3) and moves linearly up and down relative to the guide member (3) under the action of external force.

3. The auxiliary switch of the circuit breaker according to claim 1, characterized in that the push rod (2) is provided with a reset member (7) for resetting the push rod (2), and the reset member (7) is sleeved on the lower part of the push rod (2) and abuts against the guide member (3).

4. The auxiliary switch of the circuit breaker according to claim 3, characterized in that the microswitch (5) comprises an elastic part (51), the top plate (6) is driven by the top rod (2) to move vertically along the guide (3) under the action of external force to push the elastic part (51) of the microswitch (5) to move; the reset piece (7) drives the top plate (6) to reset through the ejector rod (2) when the external force of the ejector rod disappears.

5. The auxiliary switch of the circuit breaker according to claim 1, wherein the microswitch (5) comprises a first elastic pin (511) and a second elastic pin (512), the top plate (6) is arranged in a T shape, a transverse part (61) of the T-shaped top plate (6) is used for being matched with the second elastic pin (512) of the microswitch (5) to drive the second elastic pin (512) to move, and a vertical part (62) of the T-shaped top plate (6) is used for being fixed on the ejector rod (2).

6. The auxiliary switch of the circuit breaker as claimed in claim 5, wherein said first resilient leg (511) and said second resilient leg (512) are engaged with each other to form a "V" shape, said first resilient leg (511) is abutted against said microswitch (5), said second resilient leg (512) is abutted against said top plate (6), and said first resilient leg (511) and said second resilient leg (512) intersect at the outer side of the end of said microswitch (5).

7. The auxiliary switch of a circuit breaker according to claim 1, characterized in that the upper portion of the push rod (2) is provided with a through hole (21), the top plate (6) is inserted into the through hole (21) of the push rod (2) and is fixedly connected with the push rod (2) through a fixing member (22), and the lower portion of the push rod (2) is provided with a roller (23) for reducing frictional resistance.

8. An auxiliary switch of a circuit breaker according to claim 1 or 2, characterized in that there are two guide members (3), and the two guide members (3) are arranged in a "U" shape, and the two guide members (3) are mutually matched to form a "square".

9. The auxiliary switch of the circuit breaker according to claim 1, characterized in that the frame body (1) comprises two side plates (11), the side plates (11) are provided with mounting posts (12), different micro switches (5) are connected through the mounting posts (12), and a partition plate (13) is arranged between adjacent micro switches (5).

10. The auxiliary switch of claim 9, wherein the top plate (6) is disposed above the guide member (3), the side plate (11) is provided with a guide hole (111) or a guide groove, and the top plate (6) is inserted into the guide hole (111) or the guide groove of the side plate (11) and slidably engaged with the side plate (11).

Images