CN221747035U - A contact structure, a pole unit, a transfer switch, a low-voltage switch and a power distribution device - Google Patents

Abstract

The application provides a contact structure, a pole unit, a change-over switch, a low-voltage switch and distribution equipment, and relates to the technical field of piezoelectric devices. The contact structure comprises at least one group of moving contact groups, at least one group of fixed contact groups which are contacted with or separated from the moving contact groups, and at least one flexible connection, wherein a rotating shaft is arranged in the middle of the moving contact groups, one end of the flexible connection is sleeved on the rotating shaft and can rotate around the rotating shaft, the other end of the flexible connection is connected with a load, the flexible connection and the moving contact groups form electric connection, and the joint has angle degrees of freedom around the shaft core of the rotating shaft. The contact structure obtained by the design provides more degrees of freedom of the connecting part of the soft connection in a rotating connection mode, reduces the rotating deflection of the soft connection, and accordingly prolongs the service life of the soft connection.

Description

A contact structure, a pole unit, a transfer switch, a low-voltage switch and a power distribution device

Technical Field

The present application relates to the technical field of low-voltage electrical appliances, and in particular to a contact structure, a pole unit, a transfer switch, a low-voltage switch and a power distribution device.

Background Art

In the field of electrical technology, automatic transfer switches are used to provide uninterrupted power supply to loads and are able to switch between different power sources to ensure the continuity of power supply.

The contact structure of the automatic transfer switch is connected to the load end through a flexible connection to ensure circuit connectivity; the existing flexible connection is usually welded to the contact structure or rigidly connected by screws. This connection method reduces the degree of freedom of the connection between the flexible connection and the contact structure. If the rotational deflection is to be reduced to increase the service life of the flexible connection, the distance from the contact structure to the load end needs to be extended, thereby increasing the length of the flexible connection and providing a sufficiently large space for the flexible connection to move. However, this method is easily limited by the structural size of the automatic transfer switch.

Utility Model Content

The present application provides a contact structure, which provides more degrees of freedom for the connection part of the soft connection through a rotational connection, reduces the rotational deflection of the soft connection, and thus improves the life of the soft connection.

The embodiment of the present application is implemented as follows:

According to one aspect of an embodiment of the present application, a contact structure is provided, comprising at least one moving contact group, at least one stationary contact group contacting or separated from the moving contact group, and at least one flexible connection, wherein a rotating shaft is provided in the middle of the moving contact group, one end of the flexible connection is sleeved on the rotating shaft and can rotate around the rotating shaft, and the other end is connected to a load, the flexible connection is electrically connected to the moving contact group, and the connection has an angular degree of freedom around the axis of the rotating shaft.

Optionally, the contact structure further comprises at least two elastic members, which act on the end of the flexible connection close to one end of the rotating shaft, so that the end of the flexible connection is subjected to the pressure of the elastic members and forms a permanent electrical connection with the moving contact group.

Optionally, the moving contact group includes at least two stacked contact plates and a contact support, the contact support is provided with a accommodating cavity and a first opening connected to the accommodating cavity, the accommodating cavity is used to accommodate at least two contact plates, and the end of the soft connection extends into the accommodating cavity through the first opening to be electrically connected to at least two contact plates.

Optionally, the contact support also includes two oppositely arranged second openings, the opening size of the two second openings is a preset width, and the ends on both sides of the contact plate can extend from the two second openings respectively and rotate within the opening range of the second openings to contact or separate from the static contact group; the rotating shaft is passed between the two ends of the contact plate.

Optionally, when the contact structure includes a flexible connection, one end of the flexible connection is sleeved on the rotating shaft and located between at least two contact plates, and the other end is connected to the load; the elastic member is arranged between the contact support and the contact plate.

Optionally, when the contact structure includes two flexible connections, one end of the two flexible connections is respectively arranged between the contact support and the contact plate, and the other end is connected to the load; the elastic member is arranged between the contact support and the flexible connection.

Another aspect of the embodiments of the present application further provides a pole unit, comprising the above-mentioned contact structure.

On the other hand, an embodiment of the present application further provides a transfer switch, which includes a drive device, an operating mechanism and the above-mentioned contact structure. The drive device drives the operating mechanism to drive the contact structure to realize the closing and opening functions of the transfer switch.

On the other hand, an embodiment of the present application further provides a low-voltage switch, which includes a driving device, an operating mechanism and the above-mentioned contact structure. The driving device drives the operating mechanism to drive the contact structure to realize the closing and opening functions of the switching switch.

On the other hand, an embodiment of the present application further provides a power distribution device, which is equipped with a low-voltage switch and/or a transfer switch. The low-voltage switch and/or the transfer switch includes a driving device, an operating mechanism and the above-mentioned contact structure. The driving device can drive the operating mechanism to drive the contact structure to realize the closing and opening functions of the low-voltage switch and/or the transfer switch.

The beneficial effects of the embodiments of the present application include at least one of the following:

The contact structure provided by the present application includes at least one group of moving contact groups, at least one group of static contact groups that are in contact with or separated from the moving contact groups, and at least one flexible connection for switching power supplies and effectively connecting circuits; a rotating shaft is provided in the middle of the moving contact group, one end of the flexible connection is sleeved on the rotating shaft and can rotate around the rotating shaft, and the other end is connected to the load, the flexible connection forms an electrical connection with the moving contact group, and there is an angular degree of freedom at the connection point around the axis of the rotating shaft, so that the flexible connection can be flexibly rotated to reduce the rotational deflection, thereby increasing the life of the flexible connection. The contact structure obtained by the above design provides more degrees of freedom to the connection part of the flexible connection by means of a rotational connection, reduces the rotational deflection of the flexible connection, and thus increases the life of the flexible connection.

The pole unit provided in the embodiment of the present application includes the above-mentioned contact structure. The pole unit provides more degrees of freedom for the connection part of the soft connection through a rotational connection, reduces the rotational deflection of the soft connection, and thus improves the life of the soft connection and the reliability of the pole unit.

The switching switch provided in the embodiment of the present application includes the above-mentioned contact structure, drive device and operating mechanism, which can provide more degrees of freedom for the connection part of the soft connection by means of rotational connection, reduce the deflection of the rotation of the soft connection, thereby improving the life of the soft connection and the reliability of the switching switch.

The low-voltage switch provided in the embodiment of the present application includes the above-mentioned contact structure, drive device and operating mechanism, which can provide more degrees of freedom for the connection part of the soft connection through a rotational connection, reduce the deflection of the soft connection during rotation, and thus improve the life of the soft connection and the reliability of the low-voltage switch.

The power distribution equipment provided in the embodiment of the present application is equipped with the above-mentioned low-voltage switch. The above-mentioned low-voltage switch should be equipped with the power distribution equipment. The power distribution equipment can be used in the whole house intelligence and should be equipped in the smart home and Internet of Things industries to realize the whole house intelligent management.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

FIG1 is one of the structural schematic diagrams of the contact structure provided in an embodiment of the present application;

FIG2 is a second schematic diagram of the structure of the contact structure provided in an embodiment of the present application;

FIG3 is a cross-sectional schematic diagram of a contact structure provided in an embodiment of the present application.

Icon: 100 - moving contact group; 101 - contact plate; 102 - contact support; 1021 - first opening; 1022 - second opening; 110 - soft connection; 120 - rotating shaft; 130 - elastic member.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

In the description of the present application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in the subsequent drawings.

In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a signal connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

In one aspect of an embodiment of the present application, a contact structure is provided, including at least one group of moving contact groups 100, at least one group of stationary contact groups that are in contact with or separated from the moving contact groups 100, and at least one flexible connection 110. A rotating shaft 120 is provided in the middle of the moving contact group 100. One end of the flexible connection 110 is sleeved on the rotating shaft 120 and can rotate around the rotating shaft 120, and the other end is connected to a load. The flexible connection 110 forms an electrical connection with the moving contact group 100, and there is an angular degree of freedom at the connection around the axis of the rotating shaft 120.

Specifically, the present application provides a contact structure. Referring to FIG. 1 , the contact structure includes at least one group of moving contact groups 100 and at least one group of stationary contact groups. The moving contact group 100 can rotate clockwise or counterclockwise to contact or separate from the moving contact group 100, thereby cutting off or connecting the power supply. The contact structure also includes at least one flexible connection 110. As shown in FIG. 3 , a rotating shaft 120 is provided in the middle of the moving contact group 100. One end of the flexible connection 110 is sleeved on the rotating shaft 120 and the other end is connected to the load to form an electrical connection with the moving contact group 100, forming a good electrical path. The end of the flexible connection 110 can rotate around the rotating shaft 120, and there is at least one degree of freedom at the connection between the end of the flexible connection 110 and the rotating shaft 120. There is at least one angular degree of freedom at the connection between the end of the flexible connection 110 and the rotating shaft 120 along the extension direction of the rotating shaft 120.

It should be noted that, in the embodiment of the present application, the end of the flexible connection 110 is movably sleeved on the rotating shaft 120, and the connection between the flexible connection 110 and the rotating shaft 120 can rotate relative to the rotating shaft 120. The existing flexible connection is usually directly welded or screwed to rigidly connect the flexible connection to the moving contact group, and the connection between the flexible connection and the moving contact group is fixed. When the moving contact group rotates, the deflection of the flexible connection increases, which is easy to cause damage to the flexible connection, reducing the service life of the flexible connection.

In order to extend the service life of the soft connection 110, the commonly used method is to increase the length of the soft connection 110, or to extend the distance from the moving contact group 100 to the load end to provide a sufficiently large activity space for the soft connection 110, and such a setting method is easily limited by the structural size of the automatic transfer switch. The contact structure provided in the present application can make the end of the soft connection 110 sleeved on the rotating shaft 120, and can move freely relative to the rotating shaft 120. When the moving contact group 100 rotates, the deflection of the soft connection 110 is reduced, and it is not easy to damage the soft connection 110, thereby improving the service life of the soft connection 110. Even if the distance from the moving contact group 100 to the load end is not extended, the reliability of the use process of the soft connection 110 can be guaranteed; in the actual production process, the length of the soft connection 110 can be appropriately shortened or the size structure of the automatic transfer switch can be reduced according to the actual situation, which can also ensure that the soft connection 110 is not damaged and improve the service life of the soft connection 110.

The contact structure provided in the present application includes at least one group of moving contact groups 100, at least one group of stationary contact groups that are in contact with or separated from the moving contact groups 100, and at least one flexible connection 110, which is used for switching power supply and effective connection of circuits; a rotating shaft 120 is provided in the middle of the moving contact group 100, one end of the flexible connection 110 is sleeved on the rotating shaft 120 and can rotate around the rotating shaft 120, and the other end is connected to the load, and the flexible connection 110 forms an electrical connection with the moving contact group 100 and there is at least one degree of freedom at the connection, so that the flexible connection 110 can rotate flexibly to reduce the rotational deflection, thereby improving the life of the flexible connection 110. The contact structure obtained by the above design provides more degrees of freedom to the connection part of the flexible connection 110 by means of rotational connection, reduces the rotational deflection of the flexible connection 110, and thus improves the life of the flexible connection 110.

In a feasible embodiment of the present application, the contact structure also includes at least two elastic members 130, which act on the end of the soft connection 110 close to one end of the rotating shaft 120, so that the end of the soft connection 110 is subjected to the pressure of the elastic member 130 and forms a permanent electrical connection with the moving contact group 100.

Specifically, please continue to refer to Figure 1. The contact structure also includes at least two elastic members 130, which act on the end of the soft connection 110 close to one end of the rotating shaft 120. In a preferred embodiment of the present application, at least two elastic members 130 are respectively sleeved on both ends of the rotating shaft 120, and the end of the soft connection 110 is located between the at least two elastic members 130, so that the end of the soft connection 110 is always subjected to the pressure of the elastic member 130, so as to ensure that the end of the soft connection 110 forms a permanent electrical connection with the moving contact group 100; of course, the elastic member 130 can also be set at other positions of the contact structure, and the present application does not impose any restrictions on this, as long as it can ensure that the end of the soft connection 110 is always subjected to the pressure of the elastic member 130, so as to form a permanent electrical connection with the moving contact group 100.

It should be noted that, in a preferred embodiment of the present application, the elastic member 130 is selected as a compression spring, and the number is two. The two compression springs are respectively sleeved on the opposite ends of the rotating shaft 120 to ensure that the end of the flexible connection 110 forms a permanent electrical connection with the moving contact group 100. Of course, in addition to the compression spring, other elastic members 130, such as leaf springs, etc., can also be selected. The present application does not impose any restrictions on the specific arrangement of the elastic member 130; in addition, the number of elastic members 130 can also be increased, as long as it can ensure that the end of the flexible connection 110 can be compressed and tightly form a permanent electrical connection with the moving contact group 100. The present application does not impose any restrictions on the specific number of elastic members 130.

Furthermore, the moving contact group 100 includes at least two stacked contact plates 101 and a contact support 102, the contact support 102 is provided with a receiving cavity and a first opening 1021 connected to the receiving cavity, the receiving cavity is used to receive at least two contact plates 101, and the end of the flexible connection 110 extends into the receiving cavity through the first opening 1021 to be electrically connected to at least two contact plates 101.

Specifically, as shown in FIG1 , the moving contact group 100 includes at least two contact plates 101, which are stacked to be used for clamping electrical connection of the stationary contact group. The moving contact group 100 also includes a contact support 102, which is provided with a receiving cavity, and at least two contact plates 101 are placed in the receiving cavity. The contact support 102 can provide a certain support and protection for the contact plates 101 and the soft connection 110.

The rotating shaft 120 passes through the middle of the two contact plates 101 in sequence and is perpendicular to the plate surfaces of the two contact plates 101, so that the two ends of the rotating shaft 120 are respectively protruded from the plate surfaces of the two contact plates 101. As shown in FIG. 2 , a first opening 1021 is provided on the contact support 102, and the first opening 1021 is connected to the accommodating cavity, so that the end of the flexible connection 110 can extend into the accommodating cavity through the first opening 1021 and be electrically connected to at least two contact plates 101.

Furthermore, the contact support 102 also includes two oppositely arranged second openings 1022, the opening size of the two second openings 1022 is a preset width, and the ends on both sides of the contact plate 101 can extend from the two second openings 1022 respectively and rotate within the opening range of the second openings 1022 to contact or separate from the static contact group; the rotating shaft 120 is passed between the two ends of the contact plate 101.

Specifically, as shown in FIG. 2 , the contact support 102 further includes two second openings 1022 arranged opposite to each other, and the opening size of the second openings 1022 is a preset width to ensure the range of motion of the contact plate 101. The ends of the contact plate 101 on opposite sides can extend from the second openings 1022 respectively, and rotate within the opening range of the second openings 1022 to contact or separate from the static contact group respectively, thereby realizing the switching of the power supply. The rotating shaft 120 is arranged in the middle position between the two ends of the contact plate 101.

In a possible implementation scheme of the present application, when the contact structure includes a soft connection 110, one end of the soft connection 110 is sleeved on the rotating shaft 120 and is located between at least two contact plates 101, and the other end is connected to the load; the elastic member 130 is arranged between the contact support 102 and the contact plate 101.

Specifically, when the contact structure includes a flexible connection 110, one end of the flexible connection 110 is sleeved on the rotating shaft 120 and is located between at least two contact plates 101, and the other end extends out from the first opening 1021 of the contact support 102 and is connected to the load. The elastic member 130 is passed through both ends of the rotating shaft 120 and is arranged between the contact support 102 and the contact plate 101. At this time, the upper side and the lower side of the flexible connection 110 are the contact plate 101, the elastic member 130 and the contact support 102 in sequence, and the elastic member 130 forms a permanent electrical connection between the flexible connection 110 and the contact plate 101.

In a possible implementation scheme of the present application, when the contact structure includes two soft connections 110, one end of the two soft connections 110 is respectively arranged between the contact support 102 and the contact plate 101, and the other end is connected to the load; the elastic member 130 is arranged between the contact support 102 and the soft connection 110.

Specifically, as shown in FIG1 , when the contact structure includes two flexible connections 110 , one end of the two flexible connections 110 is respectively arranged between the contact support 102 and the contact plate 101 , and the two flexible connections 110 are arranged opposite to each other, that is, the two flexible connections 110 are respectively arranged opposite to each other on the side of the two contact plates 101 close to the contact support 102 ; the other ends of the two flexible connections 110 extend from the first opening 1021 of the contact support 102 and are connected to the load. The elastic member 130 is passed through the two ends of the rotating shaft 120 and is arranged between the flexible connection 110 and the contact support 102 to directly press the end of the flexible connection 110 to achieve permanent electrical connection with the contact plate 101 .

Another aspect of the embodiments of the present application further provides a pole unit, comprising the above-mentioned contact structure.

Specifically, the present application also provides a pole unit, including the above-mentioned contact structure. The pole unit provides more degrees of freedom for the connection part of the soft connection 110 by means of rotational connection, reduces the deflection of the rotation of the soft connection 110, thereby improving the life of the soft connection 110 and the reliability of the pole unit. The specific setting method and beneficial effects of the contact structure have been described in detail above and will not be repeated here.

In another aspect of the embodiment of the present application, a transfer switch is provided, the transfer switch includes a drive device, an operating mechanism and the above-mentioned contact structure, the drive device drives the operating mechanism to drive the contact structure to realize the closing and opening functions of the transfer switch. The transfer switch can provide more degrees of freedom for the connection part of the soft connection 110 by means of rotational connection, reduce the deflection of the rotation of the soft connection 110, thereby improving the life of the soft connection 110 and the reliability of the transfer switch.

In another aspect of the embodiment of the present application, a low-voltage switch is provided, which includes a driving device, an operating mechanism and the above-mentioned contact structure, wherein the driving device drives the operating mechanism to drive the contact structure to realize the closing and opening functions of the transfer switch. The low-voltage switch can provide more degrees of freedom for the connection part of the soft connection 110 by means of rotational connection, reduce the deflection of the rotation of the soft connection 110, thereby improving the life of the soft connection 110 and the reliability of the low-voltage switch.

In another aspect of the embodiment of the present application, a power distribution device is provided, the power distribution device is equipped with a low-voltage switch and/or a transfer switch, the low-voltage switch and/or the transfer switch includes a drive device, an operating mechanism and the above-mentioned contact structure, the drive device can drive the operating mechanism to drive the contact structure to realize the closing and opening functions of the low-voltage switch and/or the transfer switch. The power distribution device can be equipped with the above-mentioned low-voltage switch and/or the transfer switch, the power distribution device can be equipped with the whole house intelligence, and should be equipped with the smart home and the Internet of Things industry to realize the whole house intelligent management.

The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims (10)

1. A contact structure, characterized in that it comprises at least one group of moving contact groups (100), at least one group of stationary contact groups that are in contact with or separated from the moving contact groups (100), and at least one flexible connection (110), wherein a rotating shaft (120) is provided in the middle of the moving contact group (100), one end of the flexible connection (110) is sleeved on the rotating shaft (120) and can rotate around the rotating shaft (120), and the other end is connected to a load, the flexible connection (110) forms an electrical connection with the moving contact group (100), and there is an angular degree of freedom at the connection point around the axis of the rotating shaft (120). 2. The contact structure according to claim 1 is characterized in that the contact structure also includes at least two elastic members (130), and the elastic members (130) act on the end of the soft connection (110) close to one end of the rotating shaft (120), so that the end of the soft connection (110) is subjected to the pressure of the elastic member (130) and forms a permanent electrical connection with the moving contact group (100). 3. The contact structure according to claim 2 is characterized in that the moving contact group (100) includes at least two stacked contact plates (101) and a contact support (102), the contact support (102) is provided with a receiving cavity and a first opening (1021) connected to the receiving cavity, the receiving cavity is used to receive at least two contact plates (101), and the end of the flexible connection (110) extends into the receiving cavity through the first opening (1021) to be electrically connected to at least two contact plates (101). 4. The contact structure according to claim 3 is characterized in that the contact support (102) further includes two oppositely arranged second openings (1022), the opening size of the two second openings (1022) is a preset width, and the ends on both sides of the contact plate (101) can respectively extend from the two second openings (1022) and rotate within the opening range of the second openings (1022) to contact or separate from the static contact group; the rotating shaft (120) is passed between the two ends of the contact plate (101). 5. The contact structure according to claim 3 is characterized in that when the contact structure includes a soft connection (110), one end of the soft connection (110) is sleeved on the rotating shaft (120) and is located between at least two contact plates (101), and the other end is connected to the load; the elastic member (130) is arranged between the contact support (102) and the contact plate (101). 6. The contact structure according to claim 3 is characterized in that when the contact structure includes two soft connections (110), one end of the two soft connections (110) are respectively arranged between the contact support (102) and the contact plate (101) relative to each other, and the other end is connected to the load; the elastic member (130) is arranged between the contact support (102) and the soft connection (110). 7. A pole unit, characterized by comprising the contact structure according to any one of claims 1 to 6. 8. A transfer switch, characterized in that the transfer switch comprises a driving device, an operating mechanism and a contact structure according to any one of claims 1 to 6, wherein the driving device drives the operating mechanism to drive the contact structure to realize the closing and opening functions of the transfer switch. 9. A low-voltage switch, characterized in that the low-voltage switch comprises a driving device, an operating mechanism and a contact structure as described in any one of claims 1 to 6, wherein the driving device drives the operating mechanism to drive the contact structure to realize the closing and opening functions of the low-voltage switch. 10. A power distribution equipment, characterized in that the power distribution equipment is equipped with a low-voltage switch and/or a transfer switch, and the low-voltage switch and/or the transfer switch comprises a driving device, an operating mechanism and a contact structure as described in any one of claims 1 to 6, and the driving device can drive the operating mechanism to drive the contact structure to realize the closing and opening functions of the low-voltage switch and/or the transfer switch.