阅读说明：本技术 一种双电源转换机构和转换开关 (Dual-power switching mechanism and transfer switch ) 是由 李兵 刘浩 邢政 左鉴波 于 2020-07-07 设计创作，主要内容包括：本发明公开一种双电源转换机构和转换开关。双电源转换机构包括凸轮,其上设有至少两种不同转动半径的凸轮曲面；两个滑轮,所述凸轮转动时,其中一个所述滑轮做靠近所述凸轮转轴的直线运动,另一个所述滑轮做远离所述凸轮转轴的直线运动；两个联动结构,所述联动结构的输入端均分别连接于所述滑轮,输出端均分别连接于电源开关；两个限定作用件。通过滑轮位于直线运动中的不同位置带动联动结构运动实现电源开关的闭合、分断,一个滑轮做靠近凸轮转轴的直线运动时而另一个滑轮做远离凸轮转轴的直线运动,确保两个滑轮进行不同方向的直线运动,不同方向的直线运动对应于电源开关不同的闭合、分断状态,两个电源开关不会出现同时闭合的情况。(The invention discloses a double-power-supply switching mechanism and a change-over switch. The dual-power switching mechanism comprises a cam, wherein at least two cam curved surfaces with different rotating radiuses are arranged on the cam; when the cam rotates, one of the pulleys makes linear motion close to the cam rotating shaft, and the other pulley makes linear motion far away from the cam rotating shaft; the input ends of the linkage structures are respectively connected to the pulleys, and the output ends of the linkage structures are respectively connected to the power switches; two defining an acting element. The pulleys are located at different positions in the linear motion to drive the linkage structure to move so as to realize the closing and breaking of the power switches, one pulley does linear motion close to the cam rotating shaft while the other pulley does linear motion far away from the cam rotating shaft, so that the two pulleys are ensured to perform linear motion in different directions, the linear motion in different directions corresponds to different closing and breaking states of the power switches, and the two power switches cannot be closed simultaneously.)

1. A dual power transfer mechanism, comprising:

the cam is provided with at least two cam curved surfaces with different rotating radiuses;

the two pulleys are supported on the curved surface of the cam, and when the cam rotates, one pulley does linear motion close to the rotating shaft of the cam along with the difference of the curved surface of the cam, and the other pulley does linear motion far away from the rotating shaft of the cam;

the input ends of the linkage structures are respectively connected to the pulleys, the output ends of the linkage structures are respectively connected to the power switch, and the power switch is driven to be closed and disconnected by the linear motion of the pulleys;

two limiting action pieces limiting the pulley to slide along the cam curved surface.

2. The dual power switching mechanism as claimed in claim 1, wherein when the cam is at rest, the pulleys are respectively supported by the curved surfaces of the cam with different radii of rotation.

3. The dual power switching mechanism as claimed in claim 2, wherein when the cam rotates, the two pulleys do not move linearly away from/close to the cam shaft at the same time.

4. The dual power transfer mechanism of claim 1, wherein the linkage is arranged in a swinging manner.

5. The dual power transfer mechanism of any one of claims 1-4, further comprising a drive structure that drives the cam to rotate and remain stationary.

6. The dual power transfer mechanism of claim 5, wherein the drive structure comprises an electromagnetic drive structure that drives the cam in rotation.

7. The dual power transfer mechanism of claim 6, wherein the drive structure further comprises a permanent magnet drive structure or a cam lock structure that drives the cam to remain stationary.

8. The dual power supply switching mechanism of any one of claims 1-4, wherein the power switch is a vacuum switch.

9. The dual power supply switching mechanism of any one of claims 1-4, wherein the power switch is an air switch.

10. A transfer switch comprising the dual power transfer mechanism of any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of electrical switches, in particular to a double-power-supply switching mechanism and a double-power-supply switching switch.

Background

The change-over switch is a low-voltage electrical appliance switch, is used in a power distribution system, and is used for selecting and changing and connecting one of two power supply sources to ensure that the output end of the switch continuously outputs electric energy.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to put an end to the risk of short circuit of two power supplies, improve the safety and reliability of the change-over switch and stabilize the power distribution system.

A dual power transfer mechanism comprising:

the cam is provided with at least two cam curved surfaces with different rotating radiuses;

the two pulleys are supported on the curved surface of the cam, and when the cam rotates, one pulley does linear motion close to the rotating shaft of the cam along with the difference of the curved surface of the cam, and the other pulley does linear motion far away from the rotating shaft of the cam;

the input ends of the linkage structures are respectively connected to the pulleys, the output ends of the linkage structures are respectively connected to the power switch, and the power switch is driven to be closed and disconnected by the linear motion of the pulleys;

two limiting action pieces limiting the pulley to slide along the cam curved surface.

Further, when the cam is at rest, the pulleys are respectively supported by the cam curved surfaces with different rotating radiuses.

Further, when the cam rotates, the two pulleys do not move away from/close to the cam rotating shaft at the same time.

Further, the linkage structure swings.

Further, the device also comprises a driving structure, and the driving structure drives the cam to rotate and keep still.

Further, the driving structure comprises an electromagnetic driving structure, and the electromagnetic driving structure drives the cam to rotate.

Further, the driving structure further comprises a permanent magnet driving structure or a cam locking structure, and the permanent magnet driving structure or the cam locking structure drives the cam to keep still.

Further, the power switch is a vacuum switch.

Further, the power switch is an air switch.

A change-over switch comprises the double-power-supply change-over mechanism.

The technical scheme of the invention has the following advantages:

1. the invention provides a double power supply switching mechanism, comprising: the cam is provided with at least two cam curved surfaces with different rotating radiuses; the two pulleys are supported on the curved surface of the cam, and when the cam rotates, one pulley does linear motion close to the rotating shaft of the cam along with the difference of the curved surface of the cam, and the other pulley does linear motion far away from the rotating shaft of the cam; the input ends of the linkage structures are respectively connected to the pulleys, the output ends of the linkage structures are respectively connected to the power switch, and the power switch is driven to be closed and disconnected by the linear motion of the pulleys; two limiting action pieces limiting the pulley to slide along the cam curved surface. The double power supply conversion mechanism of the structure is characterized in that the closing and the breaking of the power supply switch are driven to be realized through cam rotation, pulley linear movement and linkage structure swing, because the curved surface of the cam has different rotation radiuses, the pulleys correspond to different positions in the linear motion at different rotation radiuses, namely, the pulleys correspond to the positions close to the rotating shaft of the cam in the linear motion when on the curved surface of the cam with a small rotation radius, and correspond to the positions far away from the rotating shaft of the cam in the linear motion when on the curved surface of the cam with a large rotation radius, the linkage structure is driven to move through the different positions of the pulleys in the linear motion to realize the closing and the breaking of the power supply switch, and because one pulley does the linear motion close to the rotating shaft of the cam and the other pulley does the linear motion far away from the rotating shaft of the cam, the two pulleys can be ensured to perform the linear motion in different directions, namely, one power switch is closed and the other power switch is disconnected, the two power switches cannot be closed, so that the conditions that two power supplies are short-circuited, the change-over switch is damaged, and potential safety hazards exist are avoided, and the reliability of the change-over switch is ensured.

2. According to the double-power-supply conversion mechanism, when the cam is static, the pulleys are respectively supported by the curved surfaces of the cams with different rotating radiuses. When the cam is static, the pulleys are respectively supported by the cam curved surfaces with different rotating radiuses, so that the pulleys are positioned at different positions in linear motion, namely one power switch is closed and the other power switch is disconnected, and the corresponding states of the two power switches are kept.

3. According to the dual power supply switching mechanism, when the cam rotates, the two pulleys do not move away from/close to the cam rotating shaft at the same time. In the double-power switching mechanism with the structure, the pulley which is farthest away from (or closest to) the cam rotating shaft moves firstly, and the corresponding switch is disconnected firstly; then the pulley closest to (or farthest from) the cam shaft moves and the corresponding switch closes again. The two power switches are sequentially closed and disconnected, so that the two power switches are ensured not to be closed under the condition of electric arcs.

4. According to the double-power-supply conversion mechanism, the driving structure comprises an electromagnetic driving structure, and the electromagnetic driving structure drives the cam to rotate. The double-power-supply switching mechanism with the structure is provided with the electromagnetic driving structure, so that when the power switch is driven, the contact of the power switch acts quickly, and the closing and the breaking of the power switch can be realized quickly.

5. The double-power-supply conversion mechanism comprises a driving structure, a permanent magnet driving structure or a cam locking structure, wherein the permanent magnet driving structure or the cam locking structure drives a cam to keep still. The dual-power switching mechanism with the structure is provided with the permanent magnet driving structure or the cam locking structure, wherein the permanent magnet driving structure keeps the static state of the cam by means of permanent magnetic force, the cam locking structure keeps the static state of the cam by means of locking of the mechanical structure, the cam locking structure does not depend on electromagnetic force, namely the state of the transfer switch is kept without continuously switching on the generated electromagnetic force, and energy is saved.

6. The invention discloses a double-power-supply switching mechanism, wherein a power switch is a vacuum switch. The double-power-supply switching mechanism with the structure has the advantages that the power switch is a vacuum switch, arc extinguishing time is not needed, so that the contact of the vacuum switch acts quickly, the action time of the contact can be shortened to be within 10ms, the switching time of the switching switch can be shortened to be within 20ms, the double-power-supply switching mechanism can be used for UPS uninterrupted power supplies, and the double-power-supply switching mechanism is directly suitable for severe loads such as computers and servers.

7. The transfer switch comprises the double-power transfer mechanism. The transfer switch with the structure has the advantages of the double-power transfer mechanism.

Drawings

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

Fig. 1 is a schematic structural view of a dual power supply changeover mechanism provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a common side power switch disconnection and a standby side power switch disconnection in the dual power switching mechanism shown in fig. 1;

fig. 3 is a schematic structural diagram of a common-side power switch disconnection and a standby-side power switch disconnection in the dual power switching mechanism shown in fig. 2;

FIG. 4 is a schematic structural diagram of a common-side power switch breaking and a standby-side power switch closing in the dual power transfer mechanism shown in FIG. 3;

fig. 5 is a schematic structural view of a dual power supply changeover mechanism provided in embodiment 2 of the present invention;

fig. 6 is a schematic structural diagram of a common side power switch disconnection and a standby side power switch disconnection in the dual power switching mechanism shown in fig. 5;

fig. 7 is a schematic structural diagram of a common side power switch disconnection and a standby side power switch disconnection in the dual power switching mechanism shown in fig. 6;

FIG. 8 is a schematic structural diagram of a normal-side power switch breaking and a standby-side power switch closing in the dual power transfer mechanism shown in FIG. 7;

fig. 9 is a schematic structural view of a dual power supply changeover mechanism provided in embodiment 3 of the present invention;

fig. 10 is a schematic structural diagram of a normal-side power switch disconnection and a standby-side power switch disconnection in the dual power transfer mechanism shown in fig. 9;

fig. 11 is a schematic structural diagram of a breaking state of a common-side power switch and a closing state of a standby-side power switch in the dual power switching mechanism shown in fig. 10;

description of reference numerals:

11-a common side power switch and 12-a standby side power switch;

2-cam, 21-first cam curved surface, 22-second cam curved surface;

311-a common side first swing connecting arm, 312-a common side second swing connecting arm, 32-a common side first connecting piece, 331-a standby side first swing connecting arm, 332-a standby side second swing connecting arm, 34-a standby side first connecting piece;

41-driving connecting piece, 42-closing coil, 43-closing iron core, 44-opening coil, 45-opening iron core, 46-permanent magnet, 47-first biasing piece;

51-a common-side second swinging member, 52-a common-side second connecting member, 53-a common-side third connecting member, 54-a spare-side second swinging member, 55-a spare-side second connecting member, 56-a spare-side third connecting member;

61-abutment wall, 62-electromagnetic coil, 63-second biasing member, 64-electromagnetic core, 65-linkage rod;

71-a common side fourth connecting piece, 72-a common side limiting sleeve, 73-a standby side fourth connecting piece and 74-a standby side limiting sleeve;

81-common side pulley, 82-standby side pulley;

91-the usual side limiting action, 92-the spare side limiting action.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.