An operating mechanism for a multi-connection switch

Abstract

The present invention discloses an operating mechanism of a multi-connection conversion switch, comprising a rotating handle, a central operating shaft and a transmission operating shaft, wherein a driving crank arm is provided on the central operating shaft, the driving crank arm is provided with a driving part, a driven crank arm is provided on the transmission operating shaft, the driving part and the driven crank arm are provided with a transmission structure, and the transmission structure comprises a motion guide groove and a push block structure, during the rotation process, the driving part on the driving crank arm drives the driven crank arm and the transmission operating shaft to rotate simultaneously through the cooperation of the motion guide groove and the push block structure, so that the rotating handle can drive the central operating shaft and the transmission operating shaft to rotate together, and multiple groups of universal conversion switches execute closing or opening actions at the same time. The advantage of such a design is that the customer can disperse the multiple groups of circuits that need to be controlled on the multiple groups of universal conversion switches, thereby avoiding the problem of the universal conversion switches being too long, the transmission distance of the central operating shaft and the transmission operating shaft is small, the structural strength is high, the transmission is reliable, and the action consistency is good.

Description

Technical Field

[0001] The present invention relates to the technical field of transfer switches, and in particular to an operating mechanism of a multi-connection transfer switch. Background Art

[0002] Universal conversion switches are mainly suitable for electrical circuits with AC 50Hz, rated working voltage 380V and below, DC voltage 220V and below, and rated current up to 160A. Universal conversion is mainly used for conversion of various control circuits, phase change measurement and control of voltmeters and ammeters, conversion of distribution device circuits and remote control, etc. Universal conversion switches can also be used to directly control the starting, speed regulation and reversing of small-capacity motors. When customers need to control multiple groups of circuits to open and close at the same time, the current universal conversion switches usually increase the number of controllable circuits by stacking contact modules backwards, but this will make the overall length of the product too long and cannot be used in occasions with limited installation space. At the same time, due to errors in the manufacturing and assembly process of the product, the accumulated errors are likely to lead to poor synchronization of contact actions between multiple contact modules, thereby affecting the consistency of product switching. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the overall length of the universal conversion switch in the prior art is too long when controlling the opening and closing of multiple groups of circuits, resulting in poor on-off consistency, thereby providing an operating mechanism for a multi-connection conversion switch that can control the opening and closing of multiple groups of universal conversion switches at the same time, has high action consistency, and has a short overall product length.

[0004] The present invention provides an operating mechanism of a multi-connection transfer switch, which is used to drive multiple groups of universal transfer switches to perform closing or opening actions, and the operating mechanism includes:

[0005] A rotating handle is connected to one group of the universal conversion switches, the universal conversion switches in this group are provided with a central operating shaft linked to the rotating handle, and the remaining groups of the universal conversion switches are respectively provided with transmission operating shafts regularly distributed and arranged with the central operating shaft as the center;

[0006] A driving crank arm is linked to the central operating shaft and has at least one driving portion extending toward the transmission operating shaft;

[0007] The driven crutch arm is linkedly arranged on the transmission operating shaft, and a transmission structure for transmitting the torque of the rotating handle is arranged between the driven crutch arm and the driving part. The transmission structure includes a motion guide groove arranged on one of the driven crutch arm and the driving part, and a push block structure arranged on the other of the driven crutch arm and the driving part and sliding back and forth along the motion guide groove. When the driving crutch arm rotates a certain angle, the push block structure cooperates with the motion guide groove to drive the driven crutch arm to rotate a certain angle.

[0008] In the operating mechanism of the multi-connection switch, at least one transmission operating shaft is provided on one side or both sides of the central operating shaft, and the connection line of at least one transmission operating shaft and the central operating shaft is in a straight line.

[0009] In the operating mechanism of the multi-connection switch, a plurality of transmission operating shafts 13 are arranged in a ring equidistantly with the central operating shaft as the center.

[0010] In the operating mechanism of the above-mentioned multi-connection conversion switch, the motion guide groove is a T-shaped groove arranged on the driven crank arm, and the push block structure is a circular push rod arranged on the driving crank arm, and the circular push rod slides in the T-shaped groove as the driving crank arm rotates.

[0011] In the operating mechanism of the above-mentioned multi-connection conversion switch, the T-slot includes a reset portion arranged at the top of the T-slot and a driven portion arranged at the bottom of the T-slot. When the driving crank arm rotates forward or reversely, the circular push rod slides in the driven portion to push the driven crank arm to rotate reversely or forward.

[0012] In the operating mechanism of the above-mentioned multi-connection conversion switch, the motion guide groove is a V-shaped groove arranged on the end of the driving part, and the push block structure is a circular push rod arranged on the driven crank arm. The V-shaped groove rotates with the driving crank arm to push the circular push rod to slide therein.

[0013] In the operating mechanism of the above-mentioned multi-connection conversion switch, the V-shaped groove includes a first slide groove portion and a second slide groove portion, and a guide block formed at the intersection of the first slide groove portion and the second slide groove portion. The circular push rod has a first position that moves to one end of the first slide groove portion or the second slide groove portion, and a second position that moves along the guide block to the intersection of the two. When the universal conversion switch performs a closing or opening action, the circular push rod slides between the first position and the second position.

[0014] In the operating mechanism of the above-mentioned multi-connection switch, the driving part is a strip-shaped rod extending toward the driven crank arm with the central operating axis as the center.

[0015] In the operating mechanism of the multi-connection conversion switch, the operating mechanism also includes a mounting plate for fixing the universal conversion switch, a support plate for fixing the central operating shaft and the transmission operating shaft, and a switch panel for shielding the support plate.

[0016] In the operating mechanism of the above-mentioned multi-connection switch, a bearing which rotates in cooperation with the operating shaft is provided on the support plate.

[0017] The technical solution of the present invention has the following advantages over the prior art:

[0018] 1. The operating mechanism of the multi-connection conversion switch provided by the present invention drives the central operating shaft to rotate by operating the rotating handle. The rotation of the central operating shaft will drive the driving crank arm to rotate synchronously. The driving part on the driving crank arm drives the driven crank arm to rotate together through the cooperation of the motion guide groove and the push block structure during the rotation process. The rotation of the driven crank arm will drive the transmission operating shaft to rotate, that is, when the rotating handle is rotated, it can drive a central operating shaft and multiple transmission operating shafts to rotate together, so that multiple groups of universal conversion switches can perform closing or opening actions at the same time. The advantage of such a design is that the customer can disperse the multiple groups of circuits that need to be controlled on multiple groups of the universal conversion switches, thereby avoiding the problem of any group of the universal conversion switches being too long. At the same time, at least one of the transmission operating shafts is regularly arranged with the central operating shaft as the center, so that the transmission distance between the central operating shaft and each transmission operating shaft is minimized when the central operating shaft rotates, and the structural strength is high, the transmission is reliable, and the action consistency is good.

[0019] 2. The operating mechanism of the multi-connection conversion switch provided by the present invention has two settings for the transmission operating shaft 13 and the central operating shaft. One is a linear arrangement, that is, the transmission operating shaft 13 is evenly arranged on both sides of the central operating shaft. This arrangement has the best transmission effect when the number of the transmission operating shafts 13 is one or two. The other is a matrix arrangement, that is, there are multiple transmission operating shafts 13 arranged in an equidistant ring with the central operating shaft as the center. The specific number of settings can be set according to the closing angle of the universal conversion switch, that is, when the closing angle of the switch is 45 degrees, the transmission operating shafts 13 can be set at 90 degrees intervals and no more than four, and the transmission effect is best. When the closing angle of the switch is 30 degrees, the transmission operating shafts 13 can be set at 60 degrees intervals and no more than six, and the transmission effect is best.

[0020] 3. The operating mechanism of the multi-connection switch provided by the present invention, the driving crank arm is divided into two forms: rod-driven and slot-driven. When the driving crank arm is rod-driven, the push block structure is arranged on the driving crank arm, and the driven crank arm is provided with a T-shaped groove matching with the push block structure. When the fixed crank arm is slot-driven, the driving crank arm is provided with a V-shaped groove, and the push block structure is arranged on the driven crank arm.

[0021] 4. In the operating mechanism of the multi-connection conversion switch provided by the present invention, when the rotating handle drives the central operating shaft to rotate, transmission is performed through the cooperation of the square operating shaft and the driving hole, so that the driving crank arm rotates synchronously with the rotation of the central operating shaft. Similarly, it can be obtained that the transmission operating shaft will rotate synchronously with the rotation of the driven crank arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the structure in which the operating mechanism of the multi-connection transfer switch provided by the present invention is installed on a universal transfer switch;

[0024] Figure 2 A schematic diagram of the structure of the operating mechanism provided by the present invention installed on a triple transfer switch;

[0025] Figure 3 for Figure 2 The schematic diagram of the structure of the multi-connection switch after the operating mechanism of the switch is hidden in the mounting plate;

[0026] Figure 4 A structural schematic diagram of a first driving mode in which the operating mechanism provided by the present invention is installed on a two-gang transfer switch;

[0027] Figure 5 A schematic diagram of the structure of the second driving mode in which the operating mechanism provided by the present invention is installed on a two-gang transfer switch;

[0028] Figure 6 A schematic diagram of the structure of the operating mechanism provided by the present invention installed on a linearly arranged five-link transfer switch;

[0029] Figure 7 A schematic diagram of the structure of the operating mechanism provided by the present invention installed on a quadruple transfer switch arranged in a matrix;

[0030] Figure 8 A schematic diagram of the structure of the operating mechanism provided by the present invention installed on a five-link transfer switch arranged in a matrix;

[0031] Description of reference numerals:

[0032] 1-universal conversion switch; 11-rotating handle; 12-central operating shaft; 13-transmission operating shaft; 14-mounting plate; 15-support plate; 16-switch panel; 17-bearing;

[0033] 2-driving crank arm; 21-driving part; 22-strip rod;

[0034] 3-driven crank arm;

[0035] 4-transmission structure; 41-motion guide groove; 42-push block structure; 43-T-slot; 44-reset part; 45-driven part; 46-V-slot; 47-first slide groove part; 48-second slide groove part; 49-guide block. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Example 1

[0041] The present embodiment is specifically described below in conjunction with the accompanying drawings:

[0042] The present invention provides Figure 1-8 The operating mechanism of a multi-connection transfer switch shown in the figure is used to drive multiple groups of universal transfer switches 1 to perform closing or opening actions, and the operating mechanism includes:

[0043] The rotating handle 11 is connected to one group of the universal conversion switches 1, and the universal conversion switches 1 in this group are provided with a central operating shaft 12 linked to the rotating handle 11, and the remaining groups of the universal conversion switches 1 are respectively provided with transmission operating shafts 13 regularly distributed and arranged with the central operating shaft 12 as the center;

[0044] A driving crank arm 2 is linked to the central operating shaft 12 and has at least one driving portion 21 extending toward the transmission operating shaft 13;

[0045] The driven crutch arm 3 is linkedly arranged on the transmission operating shaft 13, and a transmission structure 4 for transmitting the torque of the rotating handle 11 is arranged between the driven crutch arm 3 and the driving part 21. The transmission structure 4 includes a motion guide groove 41 arranged on one of the driven crutch arm 3 and the driving part 21, and a push block structure 42 arranged on the other of the driven crutch arm 3 and the driving part 21 and sliding back and forth along the motion guide groove 41. When the driving crutch arm 2 rotates a certain angle, the driven crutch arm 3 is driven to rotate a certain angle through the cooperation between the push block structure 42 and the motion guide groove 41.

[0046] The above implementation is the core technical solution of this embodiment. The central operating shaft 12 is driven to rotate by manipulating the rotating handle 11. The rotation of the central operating shaft 12 will drive the driving crank arm 2 to rotate synchronously. The driving part 21 on the driving crank arm 2 drives the driven crank arm 3 to rotate together through the cooperation of the motion guide groove 41 and the push block structure 42 during the rotation process. The rotation of the driven crank arm 3 will drive the transmission operating shaft 13 to rotate, that is, when the rotating handle 11 is rotated, it can drive a central operating shaft 12 and multiple transmission operating shafts 13 to rotate together, so that multiple groups of universal conversion switches 1 can perform closing or opening actions at the same time. The advantage of such a design is that the customer can disperse the multiple groups of circuits that need to be controlled on multiple groups of the universal conversion switches 1, thereby avoiding the problem of any group of the universal conversion switches 1 being too long. At the same time, at least one of the transmission operating shafts 13 is regularly arranged with the central operating shaft 12 as the center, so that the transmission distance between the central operating shaft 12 and each transmission operating shaft 13 is minimized when the central operating shaft 12 rotates, and the structural strength is high, the transmission is reliable, and the action consistency is good.

[0047] like Figure 2-6 As shown, at least one transmission operating shaft 13 is arranged on one side or both sides of the central operating shaft 12, and the connecting line of at least one transmission operating shaft 13 and the central operating shaft 12 is in a straight line, so that the transmission operating shafts 13 are evenly arranged on both sides of the central operating shaft 12. This arrangement has the best transmission effect when the number of transmission operating shafts 13 is set to one or two. Figure 7 or Figure 8 As shown, the transmission operating shafts 13 are arranged in a ring equidistantly with the central operating shaft 12 as the center. The specific number of the transmission operating shafts 13 can be set according to the closing angle of the universal conversion switch 1, that is, when the closing angle of the switch is 45 degrees, the transmission effect is best when no more than four transmission operating shafts 13 are arranged at intervals of 90 degrees. When the closing angle of the switch is 30 degrees, the transmission effect is best when no more than six transmission operating shafts 13 are arranged at intervals of 60 degrees.

[0048] As a specific structural setting, the motion guide groove 41 is a T-shaped groove 43 arranged on the driven crank arm 3, and the push block structure 42 is a circular push rod arranged on the driving crank arm 2. The circular push rod slides in the T-shaped groove 43 as the driving crank arm 2 rotates. The T-shaped groove 43 includes a reset portion 44 arranged at the top end of the T-shape, and a driven portion 45 arranged at the bottom end of the T-shape. Since an energy storage spring is provided inside the universal conversion switch 1, the energy storage spring will be stored when the push block structure 42 slides in the reset portion 44 or the driven portion 45, and the energy storage spring will release the stored energy to drive the universal conversion switch 1 to open and close when the circular push rod is separated from the reset portion 44 or the driven portion 45, thereby accelerating the opening and closing speed of the universal conversion switch 1.

[0049] like Figure 2-4 As shown, the motion guide groove 41 is a V-shaped groove 46 arranged on the end of the driving part 21, and the push block structure 42 is a circular push rod arranged on the driven crank arm 3. The V-shaped groove 46 rotates with the driving crank arm 2 to push the circular push rod to slide therein. The V-shaped groove 46 includes a first slide groove portion 47 and a second slide groove portion 48, and a guide block 49 formed at the intersection of the first slide groove portion 47 and the second slide groove portion 48. The circular push rod has a first position for moving to one end of the first slide groove portion 47 or the second slide groove portion 48, and a second position for moving along the guide block 49 to the intersection of the two. When the universal conversion switch 1 performs a closing or opening action, the circular push rod slides between the first position and the second position.

[0050] As a specific structural setting, the central operating shaft 12 and the transmission operating shaft 13 are square operating rods, and the driving crank arm 2 and the driven crank arm 3 are provided with square driving holes suitable for the central operating shaft 12 or the transmission operating shaft 13 to pass through. When the rotating handle 11 drives the central operating shaft 12 to rotate, the square operating shaft and the driving hole are used for transmission, so that the driving crank arm 2 rotates synchronously with the rotation of the central operating shaft 12. Similarly, the transmission operating shaft 13 will rotate with the rotation of the driven crank arm 3. The driven crutch arms 3 are arranged in a circular shape with the central operating axis 12 as the center, and the driving portions 21 are arranged in a corresponding number according to the number of the driven crutch arms 3. For example, when there are three driven crutch arms 3 arranged in a circular shape with the central operating axis 12 as the center, the driving portions 21 are correspondingly arranged in three and connected in a T-shaped structure; and when there are four driven crutch arms 3 arranged in a circular shape with the central operating axis 12 as the center, the driving portions 21 are correspondingly arranged in four and connected in a cross-shaped structure.

[0051] like Figure 1 As shown, the operating mechanism also includes a mounting plate 14 for fixing the universal conversion switch 1, a support plate 15 for fixing the central operating shaft 12 and the transmission operating shaft 13, and a switch panel 16 for shielding the support plate 15. The driving crank arm 2 and the driven crank arm 3 are arranged between the mounting plate 14 and the support plate 15. In order to facilitate the rotation of the operating shaft, a bearing 17 for rotating with the operating shaft is provided on the support plate 15. By providing the bearing 17, the rotation resistance of the central operating shaft 12 or the transmission operating shaft 13 can be effectively reduced.

[0052] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the protection scope of the invention.

Claims

1. An operating mechanism for a multi-connection transfer switch, used to drive multiple sets of universal transfer switches (1) to perform closing or opening actions, characterized in that , the operating mechanism comprises: A rotating handle (11) is connected to one group of the universal conversion switches (1), the group of universal conversion switches (1) is provided with a central operating shaft (12) linked to the rotating handle (11), and the remaining groups of the universal conversion switches (1) are respectively provided with transmission operating shafts (13) regularly distributed and arranged with the central operating shaft (12) as the center; A driving crank arm (2) is arranged on the central operating shaft (12) in a linkage manner and has at least one driving portion (21) extending in the direction of the transmission operating shaft (13); A driven crank arm (3) is linkedly arranged on the transmission operating shaft (13); a transmission structure (4) for transmitting the torque of the rotating handle (11) is arranged between the driven crank arm (3) and the driving part (21); the transmission structure (4) comprises a motion guide groove (41) arranged on one of the driven crank arm (3) and the driving part (21); and a push block structure (42) arranged on the other of the driven crank arm (3) and the driving part (21) and reciprocatingly sliding along the motion guide groove (41); when the driving crank arm (2) rotates a certain angle, the push block structure (42) cooperates with the motion guide groove (41) to drive the driven crank arm (3) to rotate a certain angle; The motion guide groove (41) is a T-shaped groove (43) provided on the driven crank arm (3), and the push block structure (42) is a circular push rod provided on the driving crank arm (2), and the circular push rod slides in the T-shaped groove (43) as the driving crank arm (2) rotates; or, The motion guide groove (41) is a V-shaped groove (46) provided on the end of the driving portion (21), the push block structure is a circular push rod provided on the driven crank arm (3), and the V-shaped groove (46) rotates with the driving crank arm (2) to push the circular push rod to slide therein.

2. The operating mechanism of the multi-connection switch according to claim 1 is characterized in that At least one transmission operating shaft (13) is provided on one side or both sides of the central operating shaft (12), and a line connecting at least one transmission operating shaft (13) and the central operating shaft (12) forms a straight line.

3. The operating mechanism of the multi-connection switch according to claim 1 is characterized in that A plurality of transmission operating shafts (13) are arranged in a ring equidistantly with the central operating shaft (12) as the center.

4. The operating mechanism of the multi-connection switch according to any one of claims 1 to 3, characterized in that The T-shaped slot (43) comprises a reset portion (44) arranged at the top of the T-shaped slot (43), and a driven portion (45) arranged at the bottom of the T-shaped slot (43); when the driving crank arm (2) rotates forward or reverse, the circular push rod slides in the driven portion (45) to push the driven crank arm (3) to rotate forward or reverse.

5. The operating mechanism of the multi-connection switch according to any one of claims 1 to 3, characterized in that The V-shaped groove (46) comprises a first slide groove portion (47) and a second slide groove portion (48), and a guide block (49) formed at the intersection of the first slide groove portion (47) and the second slide groove portion (48); the circular push rod has a first position at the bottom end of the first slide groove portion (47) or the second slide groove portion (48), and a second position at the top end of the intersection of the first slide groove portion (47) and the second slide groove portion (48); when the universal conversion switch (1) performs a closing or opening action, the circular push rod slides between the first position and the second position.

6. The operating mechanism of the multi-connection switch according to claim 1 is characterized in that The driving portion (21) is a strip-shaped rod (22) extending toward the driven crank arm (3) with the central operating axis (12) as the center.

7. The operating mechanism of the multi-connection switch according to claim 6 is characterized in that The operating mechanism also includes a mounting plate (14) for fixing the universal conversion switch (1), a support plate (15) for fixing the central operating shaft (12) and the transmission operating shaft (13), and a switch panel (16) for shielding the support plate (15).

8. The operating mechanism of the multi-connection switch according to claim 7 is characterized in that The support plate (15) is provided with a bearing (17) which rotates in cooperation with the central operating shaft (12) or the transmission operating shaft (13).

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