CN211088098U

CN211088098U - Dual-power transfer switch

Info

Publication number: CN211088098U
Application number: CN201922328990.2U
Authority: CN
Inventors: 陈斐斐
Original assignee: Nanjing Apaitek Technology Co ltd
Current assignee: Nanjing Apaitek Technology Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-07-24
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses a dual power transfer switch, which comprises a housin, the well core rod of symmetry around the inner chamber bottom fixed mounting of casing is a set of, through bolt fixed connection between the well core rod, the gravity lever has been cup jointed in the surface rotation of bolt, the trompil that corresponds with the bolt is seted up to the central point of gravity lever, the inside cavity of gravity lever, and the inside symmetry of gravity lever is provided with electric telescopic handle, electric telescopic handle's power take off end fixed mounting has the burden pouring weight, the inner chamber bottom symmetry fixed mounting of casing has the power connection, the both ends bottom fixed mounting of gravity lever has the power contact that corresponds with the power connection, the inner chamber top of casing is provided with the signal lamp joint that corresponds with power signal lamp, the signal lamp joint is connected with the signal lamp contact swing joint at the both ends top: switch more smoothly, avoided some fault nature problems that often appear in spring coupling, still have simple structure simultaneously, life is longer advantage.

Description

Dual-power transfer switch

Technical Field

The utility model relates to a low-voltage circuit switch technical field specifically is a dual supply change over switch.

Background

In the electromechanical field, the circuit transfer switch has a very important role, because whether the circuit transfer switch works reliably relates to the on-off of the circuit and the accuracy of judging and detecting the original state of the circuit, which is one of the important judgment bases for the safety of the circuit system. The spring seat, the spring and the contact are embedded in a switch body, the spring is pushed to move longitudinally in the switch body to enable the spring to be in contact with different contacts to achieve communication of different circuits, however, the spring is not designed to be positioned in the moving process, so that the communication of different circuits cannot be reliably completed in the switch, the spring and the contact need to be in tight contact if the spring and the contact need to be in reliable connection, and the spring and the contact can be in tight contact to cause great moving force. Moreover, after the dual-power transfer switch with the spring structure in the prior art is used for a period of time, the contact is not tight or cannot be contacted due to the change of the elastic potential energy of the spring.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dual power transfer switch to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a dual-power transfer switch comprises a shell, wherein a group of front and back symmetrical center rods are fixedly installed at the bottom of an inner cavity of the shell, the center rods are fixedly connected through a bolt, a gravity lever is connected to the outer surface of the bolt in a rotating mode, an opening corresponding to the bolt is formed in the center point of the gravity lever, the gravity lever is hollow, electric telescopic rods are symmetrically arranged inside the gravity lever, a negative weight block is fixedly installed at the power output end of each electric telescopic rod, power connectors are symmetrically and fixedly installed at the bottom of the inner cavity of the shell and located under the two ends of the gravity lever, power contacts corresponding to the power connectors are fixedly installed at the bottoms of the two ends of the gravity lever, signal lamp contacts are fixedly installed at the tops of the two ends of the gravity lever, and power signal lamps are symmetrically arranged on the surface of the, the top of the inner cavity of the shell is provided with a signal lamp connector corresponding to a power signal lamp, and the signal lamp connector is movably connected with signal lamp contact pieces at the tops of two ends of the gravity lever.

Preferably, the gravity lever and the power connector are arranged by taking the central rod as a symmetry axis, and the fixed end of the gravity lever is close to the opening.

Preferably, a pulley is arranged between the weight block and the inner wall of the gravity lever, and the electric telescopic rod and the weight block at two ends have the same mass and the same structure.

Preferably, the power connector is of a triangular structure, and the triangular inclined plane of the power connector is just tightly attached to the corresponding power contact when the gravity lever inclines.

Preferably, the outer surface of the shell is further provided with a power switch for controlling the electric telescopic rod.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the state of the gravity lever is adjusted through different force arm sizes of the acting force to realize the switching of the whole power circuit, so that some fault problems which often occur in spring connection are avoided;

2. the power supply is switched more smoothly, so that the problem that the spring is difficult to separate due to too close contact with the contact is avoided;

3. compared with the existing spring-structured dual-power-supply change-over switch, the structure is simpler, and the service life is longer.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

FIG. 2 is a schematic diagram of the left power connection of the present invention;

fig. 3 is a schematic diagram of the right power connection of the present invention.

In the figure: 1 casing, 2 well core poles, 3 bolts, 4 gravity levers, 5 trompils, 6 electric telescopic handle, 7 burden heavy pieces, 8 power connection, 9 power contact, 10 signal lamp contact, 11 power signal lamps, 12 signal lamp connect.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a dual-power transfer switch comprises a shell 1, wherein a group of front and back symmetrical center rods 2 are fixedly installed at the bottom of an inner cavity of the shell 1, the center rods 2 are fixedly connected through bolts 3, a gravity lever 4 is connected to the outer surface of each bolt 3 in a rotating mode, a hole 5 corresponding to each bolt 3 is formed in the center point of each gravity lever 4, each gravity lever 4 is hollow, electric telescopic rods 6 are symmetrically arranged inside each gravity lever 4, negative weights 7 are fixedly installed at power output ends of the electric telescopic rods 6, power connectors 8 are symmetrically and fixedly installed at the bottom of the inner cavity of the shell 1, the power connectors 8 are located under two end portions of each gravity lever 4, power contacts 9 corresponding to the power connectors 8 are fixedly installed at the bottoms of two ends of each gravity lever 4, signal lamp contacts 10 are fixedly installed at the tops of the two ends of each gravity lever 4, the top surface symmetry of casing 1 is provided with signal light 11, the inner chamber top of casing 1 is provided with the signal lamp that corresponds with signal light 11 and connects 12, signal lamp connects 12 and the signal lamp contact 10 swing joint at the both ends top of gravity lever 4.

It should be noted that the gravity lever 4 and the power connector 8 are both disposed with the center rod 2 as a symmetry axis, and the fixed end of the gravity lever 4 is close to the opening 5.

It is worth noting that a pulley is arranged between the weight 7 and the inner wall of the gravity lever 4, and the electric telescopic rod 6 and the weight 7 at the two ends have the same mass and the same structure.

It is worth noting that the power connector 8 is of a triangular structure, the triangular inclined plane of the power connector is just tightly attached to the corresponding power contact 9 when the gravity lever 4 inclines, and the outer surface of the shell 1 is also provided with a power switch for controlling the electric telescopic rod 6.

Example (b):

the utility model discloses at specific power switching in-process, can control electric telescopic handle 6's flexible through switch, when electric telescopic handle 6 takes place to stretch out and draw back, the position of burden pouring weight 7 will change, gravity lever 4 can destroy the balance at both ends because the change of burden pouring weight 7 positions like this, the power contact 9 of certain one end will contact with the power connection 8 that corresponds one end, thereby realized the power switching of this device, its specifically refer to following process, for convenient understanding with gravity lever 4 about both ends record respectively as A end and B end.

As shown in fig. 2, at this time, the electric telescopic rod 6 in the end a extends, and the electric telescopic rod 6 at the end B contracts, so that the end a of the gravity lever 4 is subjected to a large force, the power supply contact 9 at the end a is connected with the power supply connector 8, the power supply at the end a is switched, the end B is tilted upwards, the signal lamp contact 10 at the top of the end B is electrically connected with the corresponding signal lamp connector 12, and the corresponding power supply signal lamp 11 is lighted, which indicates that the power supply a is in use;

as shown in fig. 3, the electric telescopic rod 6 in the end B extends at this time, the electric telescopic rod 6 at the end a contracts, so that the force applied to the end B of the gravity lever 4 is large, the power contact 9 at the end B is connected with the power connector 8, the switching of the power at the end B is realized, the end a tilts upwards, the signal lamp contact 10 at the top of the end a is arranged to be in circuit connection with the corresponding signal lamp connector 12, and the corresponding power signal lamp 11 lights up, which indicates that the power supply B is in use.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A dual power transfer switch includes a housing (1), characterized in that: the inner cavity bottom of the shell (1) is fixedly provided with a group of symmetrical central rods (2) at the front and back, the central rods (2) are fixedly connected through a bolt (3), a gravity lever (4) is sleeved on the outer surface of the bolt (3), a hole (5) corresponding to the bolt (3) is formed in the central point of the gravity lever (4), the gravity lever (4) is hollow inside, electric telescopic rods (6) are symmetrically arranged inside the gravity lever (4), a negative weight block (7) is fixedly arranged at the power output end of each electric telescopic rod (6), power connectors (8) are symmetrically and fixedly arranged at the bottom of the inner cavity of the shell (1), the power connectors (8) are located under the two end parts of the gravity lever (4), and power contacts (9) corresponding to the power connectors (8) are fixedly arranged at the bottoms of the two ends of the gravity lever (4), the utility model discloses a gravity lever, including the inner chamber of casing (1), the inner chamber top of casing (1) is provided with signal lamp contact (10), the both ends top fixed mounting of gravity lever (4) has signal lamp contact (10), the top surface symmetry of casing (1) is provided with power signal lamp (11), the signal lamp of inner chamber top with power signal lamp (11) correspondence connects (12), signal lamp contact (10) swing joint at the both ends top of signal lamp joint (12) and gravity lever (4).

2. The dual power transfer switch of claim 1, wherein: gravity lever (4) and power connect (8) all use well core rod (2) to set up as the symmetry axis, and the stiff end of gravity lever (4) is close to trompil (5) department.

3. The dual power transfer switch of claim 1, wherein: and a pulley is arranged between the negative weight block (7) and the inner wall of the gravity lever (4), and the electric telescopic rod (6) and the negative weight block (7) are equal in mass and same in structure at two ends.

4. The dual power transfer switch of claim 1, wherein: the power supply connector (8) is of a triangular structure, and the triangular inclined plane of the power supply connector is just tightly attached to the corresponding power supply contact piece (9) when the gravity lever (4) inclines.

5. The dual power transfer switch of claim 1, wherein: the outer surface of the shell (1) is also provided with a power switch for controlling the electric telescopic rod (6).