Asymmetric topology crank arm mechanism of duplex auxiliary switch and three-position switch

Abstract

The utility model belongs to the technical field of switching devices, and discloses a duplex auxiliary switch asymmetric topology crank arm mechanism and a three-position switch, the crank arm mechanism comprises a driving rod, a V-shaped rod, a driven rod and a connecting rod, one end of the driving rod is arranged at the output end of a driving mechanism, and the other end of the driving rod is hinged to the first end of the V-shaped rod; the V-shaped rod is connected to a first rotating rod of the first auxiliary switch, the driven rod is connected to a second rotating rod of the second auxiliary switch, and the connecting rod is hinged to the second end of the V-shaped rod and the end, away from the second rotating rod, of the driven rod. Under the driving of the driving mechanism, the driving rod moves to drive the first rotating rod and the second rotating rod to rotate synchronously, so that the synchronous state switching of the first auxiliary switch and the second auxiliary switch is realized, no extra contact is needed, and the condition that the state switching is not in place is effectively avoided; and meanwhile, accurate synchronous control of the first auxiliary switch and the second auxiliary switch is realized on the premise of zero increase of a power source.

Description

Technical Field

[0001] This utility model relates to the field of switchgear technology, and in particular to a double-gang auxiliary switch asymmetric topology crank arm mechanism and a three-position switch. Background Technology

[0002] Three-position switches with three working positions—closing, opening (or isolating), and grounding—are widely used in power distribution switchgear. An auxiliary switch is installed on the operating mechanism of the three-position switch; this auxiliary switch moves with the operating mechanism to achieve state switching between the three working positions.

[0003] Currently, the three-position switch control circuit requires a large number of auxiliary contacts according to project needs. The existing 48-contact single three-position auxiliary switch cannot meet the requirements, and its length has already reached 190mm. With only 220mm of installation depth space, it is impossible to increase the number of contacts by extending the auxiliary switch. In addition, the excessive length of the auxiliary switch also leads to insufficient power at the remote end and incomplete state switching when the steering shaft provides control power only to one side. Utility Model Content

[0004] The purpose of this invention is to provide a double-gang auxiliary switch asymmetric topology crank arm mechanism and a three-position switch, which can ensure smooth switching of working states.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] On one hand, an asymmetric topology crank arm mechanism for a double auxiliary switch is provided for synchronous switching of the states of a first auxiliary switch and a second auxiliary switch, wherein the first auxiliary switch and the second auxiliary switch are arranged side by side; comprising:

[0007] The drive lever is located at the output end of the drive mechanism;

[0008] A V-shaped rod is connected to the first rotating rod of the first auxiliary switch, and its first end is hinged to the end of the active rod away from the driving mechanism.

[0009] Driven rod, connected to the second rotating rod of the second auxiliary switch;

[0010] The connecting rod has one end hinged to the second end of the V-shaped rod and the other end hinged to the end of the driven rod away from the second rotating rod.

[0011] Driven by the drive mechanism, the active rod moves to drive the first rotating rod and the second rotating rod to rotate synchronously.

[0012] As an alternative to the asymmetric topology crank arm mechanism of the double auxiliary switch, the V-shaped rod includes a first rod and a second rod arranged at an angle, the first rotating rod is connected at the connection between the first rod and the second rod, the active rod is hinged to the end of the first rod away from the second rod, and the connecting rod is hinged to the end of the second rod away from the first rod.

[0013] As an alternative to the asymmetric topology crank arm mechanism of the double auxiliary switch, the included angle between the first rod and the second rod is less than 90 degrees.

[0014] As an alternative to the asymmetric topology crank arm mechanism of the double auxiliary switch, the V-shaped rod, the driven rod, and the connecting rod are all plate-shaped.

[0015] On the other hand, a three-position switch is provided, comprising:

[0016] The enclosure, the first auxiliary switch and the second auxiliary switch are arranged side by side on the enclosure;

[0017] The aforementioned asymmetric topology crank arm mechanism for a double auxiliary switch is mounted on the housing.

[0018] A drive mechanism is mounted on the housing, and the drive rod is located at the output end of the drive mechanism.

[0019] As an optional solution for a three-position switch, a transmission assembly is provided between the output end of the drive mechanism and the drive rod, and a rotating seat is provided on the housing; the transmission assembly includes a first crank and a transmission rod, the first crank is rotatably mounted on the rotating seat and connected to the drive rod, and the transmission rod is hinged between the output end of the drive mechanism and the first crank.

[0020] As an optional solution for the three-position switch, the transmission assembly further includes a second crank, which is rotatably mounted on the rotating seat and is set at an angle to the first crank. The second crank is larger than the first crank and is connected between the drive rod and the first crank.

[0021] As an optional solution for a three-position switch, the output end of the drive mechanism is provided with a rotating disk, which can rotate around its own axis under the drive of the drive mechanism; the transmission rod is hinged to the rotating disk.

[0022] The beneficial effects of this utility model are:

[0023] This invention provides an asymmetric topology crank arm mechanism for a double-gang auxiliary switch and a three-position switch. Under the drive of the drive mechanism, the active rod moves, causing the V-shaped rod and the driven rod to rotate synchronously, which in turn causes the first rotating rod and the second rotating rod to rotate synchronously, realizing the synchronous state switching of the first auxiliary switch and the second auxiliary switch without the need for additional contacts, effectively avoiding the situation of incomplete state switching; at the same time, it achieves precise synchronous control of the first auxiliary switch and the second auxiliary switch without adding a power source. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the three-position switch provided in a specific embodiment of this utility model;

[0025] Figure 2 This is a structural diagram of the double auxiliary switch asymmetric topology crank arm mechanism in the closed state provided in the specific embodiment of this utility model;

[0026] Figure 3 This is a structural diagram of the double auxiliary switch asymmetric topology crank arm mechanism provided in the specific embodiment of this utility model when it is in the isolated state;

[0027] Figure 4 This is a structural diagram of the asymmetric topology crank arm mechanism of the double auxiliary switch provided in the specific embodiment of this utility model when it is in the grounded state.

[0028] In the picture:

[0029] 100. First auxiliary switch; 101. First rotating rod;

[0030] 200. Second auxiliary switch; 201. Second rotating rod;

[0031] 300. Drive mechanism;

[0032] 400. Housing; 401. Rotating seat;

[0033] 500. Transmission assembly; 501. First crank; 502. Drive rod; 503. Second crank;

[0034] 1. Active lever;

[0035] 2. V-shaped bar; 21. First bar; 22. Second bar;

[0036] 3. Driven rod;

[0037] 4. Connecting rod. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0043] like Figures 1 to 4As shown, this embodiment provides a dual-gang auxiliary switch asymmetric topology crank arm mechanism for synchronously switching the states of a first auxiliary switch 100 and a second auxiliary switch 200, which are arranged side by side. This dual-gang auxiliary switch asymmetric topology crank arm mechanism includes an active rod 1, a V-shaped rod 2, a driven rod 3, and a connecting rod 4. The active rod 1 is located at the output end of the drive mechanism 300. The V-shaped rod 2 is connected to the first rotating rod 101 of the first auxiliary switch 100, and the first end of the V-shaped rod 2 is hinged to the end of the active rod 1 away from the drive mechanism 300. The driven rod 3 is connected to the second rotating rod 201 of the second auxiliary switch 200. One end of the connecting rod 4 is hinged to the second end of the V-shaped rod 2, and the other end is hinged to the end of the driven rod 3 away from the second rotating rod 201; that is, the connecting rod 4 is hinged between the V-shaped rod 2 and the driven rod 3. Driven by the drive mechanism 300, the active lever 1 moves to drive the first rotating lever 101 and the second rotating lever 201 to rotate synchronously, thereby realizing the synchronous state switching of the first auxiliary switch 100 and the second auxiliary switch 200 without the need to add additional contacts, effectively avoiding the situation of incomplete state switching; at the same time, precise synchronous control of the first auxiliary switch 100 and the second auxiliary switch 200 is achieved without adding a power source.

[0044] Specifically, both the first auxiliary switch 100 and the second auxiliary switch 200 have three operating states. Figure 2 The closed state shown is as follows: Figure 3 The isolation status shown Figure 4 The grounding state is shown. Both the first auxiliary switch 100 and the second auxiliary switch 200 are structures already disclosed in the prior art. Their specific structures and principles are as described in the prior art and will not be repeated here.

[0045] For example, in this embodiment, the drive mechanism 300 is a motor commonly used in the art.

[0046] Optionally, refer to Figure 1 The V-shaped rod 2 includes a first rod 21 and a second rod 22 arranged at an included angle. A first rotating rod 101 is connected to the junction of the first rod 21 and the second rod 22. The driving rod 1 is hinged to the end of the first rod 21 away from the second rod 22, and the connecting rod 4 is hinged to the end of the second rod 22 away from the first rod 21. The symmetrical arrangement of the first rod 21 and the second rod 22 ensures the synchronous rotation of the first rotating rod 101 and the second rotating rod 201, thereby ensuring the synchronous switching of the first auxiliary switch 100 and the second auxiliary switch 200. At the same time, the V-shaped rod 2 optimizes the torque transmission path and reduces energy loss during transmission.

[0047] Furthermore, the angle between the first rod 21 and the second rod 22 is less than 90 degrees, meaning that the first rod 21 and the second rod 22 are set at an acute angle. The acute angle setting allows the V-shaped rod 2 to be more compact, making it suitable for space-constrained environments, ensuring structural rigidity while also achieving weight reduction.

[0048] For example, in this embodiment, the angle between the first rod 21 and the second rod 22 is 70 degrees; in other embodiments, the specific angle can be set as needed, and is not specifically limited here.

[0049] Optionally, the V-shaped rod 2, the driven rod 3, and the connecting rod 4 are all plate-shaped to improve bending stiffness, effectively reduce deformation, and improve transmission accuracy; at the same time, the plate-shaped structure can achieve efficient use of materials and reduce overall weight.

[0050] Additionally, refer to Figure 1 This embodiment also provides a three-position switch, including a housing 400, the aforementioned double-gang auxiliary switch asymmetric topology crank arm mechanism, and a drive mechanism 300. The first auxiliary switch 100 and the second auxiliary switch 200 are arranged side by side on the housing 400. The double-gang auxiliary switch asymmetric topology crank arm mechanism and the drive mechanism 300 are also arranged on the housing 400, possessing all the beneficial effects of the aforementioned double-gang auxiliary switch asymmetric topology crank arm mechanism, which will not be elaborated here.

[0051] Furthermore, a transmission assembly 500 is provided between the output end of the drive mechanism 300 and the drive rod 1, and a rotating seat 401 is provided on the housing 400. The transmission assembly 500 includes a first crank 501 and a transmission rod 502. The first crank 501 is rotatably mounted on the rotating seat 401 and connected to the drive rod 1, and the transmission rod 502 is hinged between the output end of the drive mechanism 300 and the first crank 501. With the above arrangement, the rotation of the output end of the drive mechanism 300 can drive the movement of the drive rod 1, ensuring that the first auxiliary switch 100 and the second auxiliary switch 200 switch synchronously.

[0052] Furthermore, the transmission assembly 500 also includes a second crank 503, which is rotatably mounted on the rotating seat 401 and forms an angle with the first crank 501. The second crank 503 is larger than the first crank 501 and connects the drive rod 1 and the first crank 501. This arrangement prevents the drive rod 1 from interfering with the transmission rod 502 during movement, ensuring the effectiveness of the transmission.

[0053] Optionally, the output end of the drive mechanism 300 is provided with a rotating disk, which can rotate around its own axis under the drive of the drive mechanism 300; the transmission rod 502 is hinged to the rotating disk. With the above configuration, the rotational motion of the rotating disk can be converted into linear motion by the transmission rod 502, which is more flexible and has a compact structure, making it adaptable to complex installation environments.

[0054] Specifically, the housing 400 is also equipped with an interlocking plate. The interlocking plate restricts the movement range of the active rod 1 through a mechanical structure, ensuring that the three working states cannot be activated simultaneously, thereby ensuring the safety of personnel and equipment. Specifically, the interlocking plate is a structure already disclosed in existing technology, and its specific structure and principle are as described in existing technology, and will not be elaborated here.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A double auxiliary switch asymmetric topology crank mechanism for synchronous switching of states of a first auxiliary switch (100) and a second auxiliary switch (200), the first auxiliary switch (100) being arranged side by side with the second auxiliary switch (200); characterized in that Comprising: a driving rod (1) arranged at an output end of a driving mechanism (300); a V-shaped rod (2) connected to a first rotating rod (101) of the first auxiliary switch (100) and having a first end hinged to one end of the driving rod (1) away from the driving mechanism (300); a driven rod (3) connected to a second rotating rod (201) of the second auxiliary switch (200); a connecting rod (4) having one end hinged to a second end of the V-shaped rod (2) and the other end hinged to one end of the driven rod (3) away from the second rotating rod (201); Under the driving of the driving mechanism (300), the driving rod (1) moves to drive synchronous rotation of the first rotating rod (101) and the second rotating rod (201).

2. The dual auxiliary switch asymmetric topology crank mechanism of claim 1, wherein, The V-shaped rod (2) comprises a first rod (21) and a second rod (22) arranged at an angle, the first rotating rod (101) being connected to a connection between the first rod (21) and the second rod (22), the driving rod (1) being hinged to one end of the first rod (21) away from the second rod (22), and the connecting rod (4) being hinged to one end of the second rod (22) away from the first rod (21).

3. The dual auxiliary switch asymmetric topology crank mechanism of claim 2, wherein, The angle between the first rod (21) and the second rod (22) is less than 90 degrees.

4. The dual auxiliary switch asymmetric topology crank mechanism of claim 1, wherein, The V-shaped rod (2), the driven rod (3) and the connecting rod (4) are all in the shape of a sheet.

5. A three-position switch characterized by, Comprising: a box (400), the first auxiliary switch (100) and the second auxiliary switch (200) being arranged side by side on the box (400); The double auxiliary switch asymmetric topology crank mechanism according to any one of claims 1-4 is arranged on the box (400); a driving mechanism (300) arranged on the box (400) and having the driving rod (1) arranged at an output end thereof.

6. The three-position switch of claim 5, wherein, A transmission assembly (500) is arranged between the output end of the driving mechanism (300) and the driving rod (1), and a rotating seat (401) is arranged on the box (400); the transmission assembly (500) comprises a first crank (501) and a transmission rod (502), the first crank (501) being rotatably arranged on the rotating seat (401) and connected to the driving rod (1), and the transmission rod (502) being hinged between the output end of the driving mechanism (300) and the first crank (501).

7. The three position switch of claim 6, wherein, The transmission assembly (500) further comprises a second crank (503) rotatably arranged on the rotating seat (401) and arranged at an angle with the first crank (501), the second crank (503) having a size greater than that of the first crank (501) and being connected between the driving rod (1) and the first crank (501).

8. The three-position switch of claim 6, wherein, The output end of the driving mechanism (300) is provided with a rotating disc, which can rotate around its own axis direction under the driving of the driving mechanism (300); and the transmission rod (502) is hinged to the rotating disc.

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