Operating mechanism and dual-power change-over switch

Abstract

The invention discloses an operating mechanism and a dual-power change-over switch, the operating mechanism comprises a motor and a change-over assembly, the change-over assembly is connected with the motor through a driving rod, and the motor drives the change-over assembly to complete common and standby opening and closing; the switching assembly comprises a support, a common driving lever and a standby driving lever, the upper end of the common driving lever and the upper end of the standby driving lever are installed on the support in a sliding mode, the lower end of the common driving lever is connected with the support through a first elastic assembly, and the lower end of the standby driving lever is connected with the support through a second elastic assembly. Compared with the prior art, the operating mechanism is simple in structure, time-saving, labor-saving, convenient to assemble and reliable in interlocking.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to an operating mechanism and a dual power supply conversion switch. Background Art

[0002] The current operating mechanism of automatic transfer switch electrical appliances has the following problems: the length of the resistance arm of the standby drive connecting rod is often greater than the length of the power arm. As the closing process is over, the resistance to the handle rotation increases, the motor load increases, and the operation is difficult; the motor rotation angle is large, and the contact conversion time is long; the laborious mechanism causes the left and right spring assemblies to vibrate as the handle rotates during the closing process, causing the elastic assembly to vibrate, resulting in uneven force.

[0003] Therefore, the present invention needs to provide a dual-power operating mechanism with simple structure, time-saving and labor-saving, convenient assembly and reliable interlocking. Summary of the invention

[0004] The object of the present invention is to provide an operating mechanism and a dual power conversion switch, so as to solve the above-mentioned problems existing in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows: An operating mechanism comprises: a motor and a conversion assembly, wherein the conversion assembly is connected to the motor through a driving rod, and the motor drives the conversion assembly to complete normal and standby opening and closing; The conversion assembly comprises: a bracket, a common lever and a spare lever, wherein the upper ends of the common lever and the spare lever are mounted on the bracket in a sliding manner, the lower end of the common lever is connected to the bracket via a first elastic component, and the lower end of the spare lever is connected to the bracket via a second elastic component; The upper ends of the common lever and the standby lever are overlapped, the upper ends of the common lever and the standby lever are respectively provided with a first sliding groove and a second sliding groove, the upper end of the bracket is also provided with a third sliding groove, the first sliding groove, the second sliding groove and the third sliding groove are provided with a roller, and one end of the roller is connected to the driving rod; A first connecting rod is further provided between the first elastic component and the common lever, the upper end of the first connecting rod is connected to the common lever via a first connecting shaft, the lower end of the first connecting rod is connected to the upper end of the first elastic component and the lower end of the common lever via a first sliding shaft, and the lower end of the first elastic component is connected to the bracket via a first sliding rod; A second connecting rod is also provided between the second elastic component and the spare lever, the upper end of the second connecting rod is connected to the spare lever through a second connecting shaft, the lower end of the second connecting rod is connected to the upper end of the second elastic component and the lower end of the spare lever through a second sliding shaft, and the lower end of the second elastic component is connected to the bracket through a second sliding rod.

[0006] Further, the first elastic component includes a first transmission rod and a first elastic member, the first elastic member is sleeved on the first transmission rod, a first slide groove is provided on the first transmission rod, a first fixing hole is provided at the upper end of the first slide groove, the first sliding shaft passes through the first connecting rod, the first fixing hole and the lower end of the common lever in sequence, and a first slide rod is further provided in the first slide groove; The second elastic component includes a second transmission rod and a second elastic member, the second elastic member is sleeved on the second transmission rod, a second slide groove is provided on the second transmission rod, a second fixing hole is provided at the upper end of the second slide groove, the second sliding shaft passes through the second connecting rod, the second fixing hole and the lower end of the spare lever in sequence, and a second slide rod is also provided in the second slide groove.

[0007] Furthermore, the first transmission rod and the second transmission rod have the same structure and size, and both the first transmission rod and the second transmission rod are U-shaped structures.

[0008] Furthermore, the first elastic member and the second elastic member are springs, the first elastic member is located between the first sliding shaft and the first sliding rod, and the second elastic member is located between the second sliding shaft and the second sliding rod.

[0009] Furthermore, the first sliding groove and the second sliding groove each include a first part and a second part, the first part is arranged transversely, the second part is arranged at one end where the common lever and the spare lever are close to each other, and the second part forms an angle with the first part at the connection.

[0010] Furthermore, the first transmission rod and the second transmission rod each include a first vertical rod, a first cross rod and a second vertical rod, the first cross rod is located in the middle of the first vertical rod and the second vertical rod, and both ends of the first cross rod are respectively connected to one end of the first vertical rod and the second vertical rod, and the first vertical rod, the first cross rod and the second vertical rod form a U-shaped structure of the first transmission rod and the second transmission rod.

[0011] Furthermore, the first slide groove is located on the first vertical rod and the second vertical rod and is opened along the length direction of the first vertical rod and the second vertical rod, and the second slide groove is located on the third vertical rod and the fourth vertical rod and is opened along the length direction of the third vertical rod and the fourth vertical rod.

[0012] Furthermore, the bracket also includes a fourth sliding groove and a fifth sliding groove, the end of the first sliding shaft close to the bracket slides left and right along the S1 direction in the fourth sliding groove, the end of the first sliding shaft away from the bracket is connected to the common contact, the end of the second sliding shaft close to the bracket slides left and right along the S1 direction in the fifth sliding groove, and the end of the second sliding shaft away from the bracket is connected to the spare contact.

[0013] Furthermore, the third sliding groove, the fourth sliding groove and the fifth sliding groove are arc grooves.

[0014] The present invention also includes a dual power conversion switch, which includes the above-mentioned operating mechanism.

[0015] The beneficial effects of the present invention are: Since the operating mechanism of the present invention adopts a double-link driving structure, the length of the power arm of the standby driving link is equivalent to that of the resistance arm, and during the switch closing process, as the resistance of the switch handle gradually increases, the power arm of the standby driving rod gradually becomes longer and the resistance arm gradually becomes shorter and smaller, thereby reducing the motor load; the standby lever adopts three parts of equal-sized arc grooves and the driving rod to complete the interlocking function; the transmission system between the connecting rods is used to achieve unrelated human operation; the motor has the advantages of small rotation angle and short contact conversion time, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the operating mechanism of the present invention; Figure 2 is an exploded view of the operating mechanism of the present invention; Figure 3 It is a two-position structural diagram of the operating mechanism of the present invention; Figure 4 This is a common closing structure diagram of the operating mechanism of the present invention. Figure 5 It is a diagram of the standby closing structure of the operating mechanism of the present invention; Figure 6 This is a commonly used closing energy storage release structure diagram of the operating mechanism of the present invention; Figure 7 This is a commonly used closing energy storage release structure diagram of the operating mechanism of the present invention.

[0017] Reference numerals: Motor 1, driving rod 2, bracket 3, common lever 4, spare lever 5, roller 6, first connecting rod 7, first connecting shaft 8, first sliding shaft 9, first sliding rod 10, first transmission rod 11 and first elastic member 12, first sliding groove 13, first fixing hole 14; The first sliding groove 41, the first part 411, the second part 412, the second sliding groove 51; A second connecting rod 7', a second connecting shaft 8', a second sliding shaft 9', a second sliding rod 10', a second transmission rod 11', a second elastic member 12', a second sliding groove 13', and a second fixing hole 14'; The third sliding groove 31 , the fourth sliding groove 32 , the fixing hole 33 , and the fifth sliding groove 35 . DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] Among them, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0022] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0023] like Figures 1 to 7 As shown, an operating mechanism includes: a motor 1 and a conversion assembly, wherein the conversion assembly is connected to the motor 1 through a driving rod 2, and the motor 1 drives the conversion assembly to complete normal and standby opening and closing; The conversion assembly includes: a bracket 3, a common lever 4 and a spare lever 5, wherein the upper ends of the common lever 4 and the spare lever 5 are mounted on the bracket 3 in a sliding manner, the lower end of the common lever 4 is connected to the bracket 3 via a first elastic component, and the lower end of the spare lever 4 is connected to the bracket 3 via a second elastic component; The upper ends of the common lever 4 and the standby lever 5 are overlapped, and the upper ends of the common lever 4 and the standby lever 5 are respectively provided with a first sliding groove 41 and a second sliding groove 51, and the upper end of the bracket 3 is also provided with a third sliding groove 31, and a roller 6 is provided in the first sliding groove 41, the second sliding groove 51 and the third sliding groove 31, and one end of the roller 6 is connected to the driving rod 2; A first connecting rod 7 is further provided between the first elastic component and the common lever 4, the upper end of the first connecting rod 7 is connected to the common lever 4 via a first connecting shaft 8, the lower end of the first connecting rod 7 is connected to the upper end of the first elastic component and the lower end of the common lever 4 via a first sliding shaft 9, and the lower end of the first elastic component is fixed to the bracket via a first sliding rod 10; A second connecting rod 7′ is also provided between the second elastic component and the spare lever 5. The upper end of the second connecting rod 7′ is connected to the spare lever 5 via a second connecting shaft 8′, and the lower end of the second connecting rod 7′ is connected to the upper end of the second elastic component and the lower end of the spare lever 5 via a second sliding shaft 9′. The lower end of the second elastic component is fixed to the bracket 3 via a second sliding rod 10′.

[0024] Through the above method, it can be known that since the operating mechanism of the present invention adopts a double-link driving structure, the length of the power arm of the standby driving connecting rod is equivalent to that of the resistance arm, and during the switch closing process, as the resistance of the execution switch handle gradually increases, the power arm of the standby driving rod gradually becomes shorter and the resistance arm gradually decreases, thereby reducing the motor load; the standby lever adopts three parts of equal-sized arc grooves and driving rods to complete the interlocking function; the transmission system between the connecting rods is used to achieve unrelated human operation; the motor has the advantages of small rotation angle and short contact conversion time.

[0025] In addition, it is worth mentioning that the first elastic component includes a first transmission rod 11 and a first elastic member 12, the first elastic member 12 is sleeved on the first transmission rod 11, a first slide groove 13 is provided on the first transmission rod 11, a first fixing hole 14 is provided at the upper end of the first slide groove 13, the first sliding shaft 9 passes through the first connecting rod 7, the first fixing hole 14 and the lower end of the common lever 4 in sequence, and a first slide rod 10 is further provided in the first slide groove 13; The second elastic component comprises a second transmission rod 11′ and a second elastic member 12′, the second elastic member 12′ is sleeved on the second transmission rod 11′, a second slide slot 13′ is provided on the second transmission rod 11′, a second fixing hole 14′ is provided at the upper end of the second slide slot 13′, the second sliding shaft 9′ passes through the second connecting rod 7′, the second fixing hole 14′ and the lower end of the standby lever 5 in sequence, and a second slide rod 10′ is further provided in the second slide slot 13′; In the present embodiment, the first transmission rod 11 and the second transmission rod 11' have the same structure and size, and the first transmission rod 11 and the second transmission rod 11' are both U-shaped structures. In the actual assembly process, the shapes of the first transmission rod 11 and the second transmission rod 11' can also be other shapes, which are not specifically limited.

[0026] In addition, it is worth mentioning that the first sliding groove 41 and the second sliding groove 51 both include a first part 411 and a second part 412, the first part 411 and the second part 412 are connected, the first part 411 is arranged horizontally, and the second part 412 is arranged at an end where the commonly used lever 4 and the spare lever 5 are close to each other, and the second part 412 forms an angle with the first part 411 at the connection.

[0027] In this embodiment, the first elastic member 12 and the second elastic member 12' are springs. The first elastic member 12 is located between the first sliding shaft 9 and the first sliding rod 10, and the second elastic member 12 is located between the second sliding shaft 9' and the second sliding rod 10'. Figure 3 Convert to Figure 4 When the switch completes the action from double opening to common closing, the output shaft 101 of the motor 1 drives the driving rod to rotate, and the roller on the driving rod pushes the second part 412 of the first sliding groove 51 of the common lever 5 to make it rotate around the fixing hole 33 of the bracket. At the same time, the straight arm 532 of the lower notch of the common lever 4 pushes the first sliding shaft 9, and the first sliding shaft 9 drives the common lever and the first elastic component to swing to the straightened state of the first connecting rod 7. The position of the first sliding shaft 9 slides from 111 to 112, which completes the spring energy storage. When the common lever and the first elastic component exceed 180 degrees, the spring is released. Figure 6 As shown, the position of the first sliding shaft 9 slides back from position 112 to position 111 and reaches position 321 of the fourth sliding slot 32 of the bracket, and at the same time, the roller 6 reaches position 511 of the first part 411 of the standby lever 5, forming an interlock for the standby lever 5. When the roller 6 rotates to position 312 of the third sliding slot 31, the common closing action is completed, and the switch is closed by passing the dead point of the elastic element, and the conversion speed is faster.

[0028] Depend on Figure 4 Convert to Figure 3When the switch completes the action from the common closing to the double opening, the output shaft 101 of the motor 1 drives the driving rod 3 to rotate, and the roller 6 on the driving rod 2 pushes the second part 411 straight arm 413 on the common lever 4 to make it rotate around the bracket fixing hole 33. At the same time, the straight arm 431 at the lower end notch pushes the first sliding shaft 9. The first sliding shaft 9 drives the common lever and the first elastic component to swing to the straightened state of the first connecting rod 7. The position of the first sliding shaft 9 slides from position 111 to position 112 to complete the spring energy storage. When the common lever and the first elastic component exceed 180 degrees, the spring is released, and the first sliding shaft position slides back from position 112 to position 111 to the fourth sliding groove position 452 of the bracket 3. At this time, the roller 6 is located in the first part of the second sliding groove, thereby limiting the rotation of the standby lever 5, forming an interlock for the standby lever 5, and when the driving roller 6 is located in the middle position of the third sliding groove on the bracket 3, the common opening action is completed.

[0029] Depend on Figure 3 Convert to Figure 5 When the switch completes the action from double opening to standby closing, when the output shaft 101 of the motor 1 drives the driving rod 2 to rotate, the roller 6 on the driving rod 2 pushes the straight arm 512 on the first part 411 of the second sliding groove 51 of the standby lever 5 to make it rotate around the bracket fixing hole 34, and at the same time, the straight arm 531 at the lower end notch of the standby lever 5 pushes the second sliding shaft 9', and the second sliding shaft 9' drives the standby lever 5 and the second elastic component to swing to the second connecting rod 7' straightened state. The second connecting shaft position slides from position 111' to position 112', which completes the spring energy storage. When the common lever and the first elastic component exceed 180 degrees, the spring is released, such as Figure 7 As shown, the position of the second sliding shaft 9′ slides from position 112′ back to position 111′ to reach position 461 of the fifth sliding slot of the bracket 3, and at the same time, the driving rod 2 reaches position 414 of the first part 411 of the first sliding slot 41 of the common lever 4, forming an interlock for the common lever 4. When the roller 6 rotates to the common closing limit position 412 of the third sliding slot, the standby closing action is completed.

[0030] Depend on Figure 5 Convert to Figure 3When the switch completes the action from normal closing to double opening, when the output shaft 101 of the motor 1 drives the driving rod 2 to rotate, the roller 6 on the driving rod 2 pushes the straight arm 513 of the second part 412 of the second sliding groove 51 on the standby lever 5 to make it rotate around the bracket fixing hole 34, and at the same time, the straight arm 532 of the slot at the lower end of the standby lever 6 pushes the second connecting shaft 8', and the second connecting shaft 8' drives the standby lever 5 and the second elastic component to swing to the second connecting rod straightening state, and the position of the second connecting shaft 8' slides from position 111' to position 112' to complete the spring energy storage, and the spring is released when the standby lever 5 and the second elastic component exceed 180 degrees, and the position of the second connecting shaft 8' slides from position 112' back to position 111' to reach the position 351 of the point sliding groove, at this time, the roller 6 is located in the first part 411 of the first sliding groove 41, thereby limiting the rotation of the normal lever 4, forming an interlock for the normal lever 4, and when the roller 6 is located at the middle 311 position of the third sliding groove 31, the standby opening action is completed.

[0031] Specifically, the first transmission rod 11 and the second transmission rod 11′ each include a first vertical rod, a first cross rod and a second vertical rod, the first cross rod is located in the middle of the first vertical rod and the second vertical rod, and the two ends of the first cross rod are respectively connected to one end of the first vertical rod and the second vertical rod, the first vertical rod, the first cross rod and the second vertical rod are connected by integral molding, and the first vertical rod, the first cross rod and the second vertical rod form a first transmission rod and a second transmission rod of a U-shaped structure, and the first transmission rod 11 cooperates with the common lever 4 and the second transmission rod 11′ cooperates with the spare lever 5, thereby realizing common opening and closing and spare opening and closing of the switch.

[0032] In addition, it should be noted that the first slide groove 13 is located on the first vertical rod and the second vertical rod, and is opened along the length direction of the first vertical rod and the second vertical rod; the second slide groove is located on the third vertical rod and the fourth vertical rod, and is opened along the length direction of the third vertical rod and the fourth vertical rod. By setting the first slide groove 13 and the second slide groove 13′, the first slide rod and the second slide rod slide up and down in the first slide groove 13 and the second slide groove 13′ respectively, thereby realizing the energy storage and release of the first elastic member 12 and the second elastic member 12′.

[0033] When the switch performs normal opening and closing and standby opening and closing, the bracket 3 also includes a fourth sliding groove 32 and a fifth sliding groove 35. The end of the first sliding shaft close to the bracket slides left and right along the S1 direction in the fourth sliding groove 32, and the end of the first sliding shaft 9 away from the bracket 3 is connected to the normal contact. The end of the second sliding shaft 9' close to the bracket 3 slides left and right along the S1 direction in the fifth sliding groove 35, and the end of the second sliding shaft 9' away from the bracket 3 is connected to the standby contact. In this embodiment, the third sliding groove 31, the fourth sliding groove 32 and the fifth sliding groove 35 are arc grooves.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be considered as the scope of protection of the present invention.

Claims

1. An operating mechanism, comprising: characterized in that, A motor and a conversion assembly, wherein the conversion assembly is connected to the motor through a driving rod, and the motor drives the conversion assembly to complete normal and standby opening and closing; The conversion assembly comprises: a bracket, a common lever and a spare lever, wherein the upper ends of the common lever and the spare lever are mounted on the bracket in a sliding manner, the lower end of the common lever is connected to the bracket via a first elastic component, and the lower end of the spare lever is connected to the bracket via a second elastic component; The upper ends of the common lever and the standby lever are overlapped, the upper ends of the common lever and the standby lever are respectively provided with a first sliding groove and a second sliding groove, the upper end of the bracket is also provided with a third sliding groove, the first sliding groove, the second sliding groove and the third sliding groove are provided with a roller, and one end of the roller is connected to the driving rod; A first connecting rod is further provided between the first elastic component and the common lever, the upper end of the first connecting rod is connected to the common lever via a first connecting shaft, the lower end of the first connecting rod is connected to the upper end of the first elastic component and the lower end of the common lever via a first sliding shaft, and the lower end of the first elastic component is connected to the bracket via a first sliding rod; A second connecting rod is also provided between the second elastic component and the spare lever, the upper end of the second connecting rod is connected to the spare lever through a second connecting shaft, the lower end of the second connecting rod is connected to the upper end of the second elastic component and the lower end of the spare lever through a second sliding shaft, and the lower end of the second elastic component is connected to the bracket through a second sliding rod.

2. The operating mechanism according to claim 1, characterized in that: The first elastic component includes a first transmission rod and a first elastic member, the first elastic member is sleeved on the first transmission rod, a first slide groove is provided on the first transmission rod, a first fixing hole is provided at the upper end of the first slide groove, the first sliding shaft passes through the first connecting rod, the first fixing hole and the lower end of the common lever in sequence, and a first slide rod is further provided in the first slide groove; The second elastic component includes a second transmission rod and a second elastic member, the second elastic member is sleeved on the second transmission rod, a second slide groove is provided on the second transmission rod, a second fixing hole is provided at the upper end of the second slide groove, the second sliding shaft passes through the second connecting rod, the second fixing hole and the lower end of the spare lever in sequence, and a second slide rod is also provided in the second slide groove.

3. The operating mechanism according to claim 2, characterized in that: The first transmission rod and the second transmission rod have the same structure and size, and both the first transmission rod and the second transmission rod are U-shaped structures.

4. The operating mechanism according to claim 2, characterized in that: The first elastic member and the second elastic member are springs. The first elastic member is located between the first sliding shaft and the first sliding rod, and the second elastic member is located between the second sliding shaft and the second sliding rod.

5. The operating mechanism according to claim 2, characterized in that: The first sliding slot and the second sliding slot both include a first part and a second part, the first part is arranged transversely, the second part is arranged at one end where the common lever and the spare lever are close to each other, and the second part forms an angle with the first part at the connection.

6. The operating mechanism according to claim 3, characterized in that: The first transmission rod and the second transmission rod each include a first vertical rod, a first cross rod and a second vertical rod. The first cross rod is located in the middle of the first vertical rod and the second vertical rod, and both ends of the first cross rod are respectively connected to one end of the first vertical rod and the second vertical rod. The first vertical rod, the first cross rod and the second vertical rod form a U-shaped first transmission rod and a second transmission rod.

7. The operating mechanism according to claim 2, characterized in that: The first slide groove is located on the first and second vertical rods and is opened along the length direction of the first and second vertical rods. The second slide groove is located on the third and fourth vertical rods and is opened along the length direction of the third and fourth vertical rods.

8. The operating mechanism according to claim 1, characterized in that: The bracket also includes a fourth sliding groove and a fifth sliding groove, the end of the first sliding shaft close to the bracket slides left and right along the S1 direction in the fourth sliding groove, the end of the first sliding shaft away from the bracket is connected to the common contact, the end of the second sliding shaft close to the bracket slides left and right along the S1 direction in the fifth sliding groove, and the end of the second sliding shaft away from the bracket is connected to the spare contact.

9. The operating mechanism according to claim 8, characterized in that: The third sliding groove, the fourth sliding groove and the fifth sliding groove are arc grooves.

10. A dual power switch, comprising an operating mechanism, characterized in that: The operating mechanism is the same as the operating mechanism described in any one of claims 1 to 9.

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