Rotary operation structure and switch device

Abstract

The utility model relates to a rotation operation structure and switch equipment, the structure comprises an operation wheel, a transmission sheet and a connecting portion, the operation wheel is provided with a plurality of wheel limiting protrusions, the transmission sheet is provided with a plurality of sheet limiting grooves, the operation wheel is connected with the transmission sheet in a tenon-and-mortise mode through clamping connection of the wheel limiting protrusions and the sheet limiting grooves, and the connection portion is connected with the transmission sheet in a tenon-and-mortise mode. The transmission piece is positioned on the operation wheel in the circumferential direction, the connecting part is installed at the rotation center of the transmission piece, the rotation center of the transmission piece is fixed to the rotation center of the operation wheel through the connecting part, and the central axis of the connecting part coincides with the central axis of the operation wheel and the central axis of the transmission piece. Compared with the prior art, the device is stable and reliable in operation and long in service life.

Description

Technical Field

[0001] This utility model belongs to the field of electrical switch technology, and relates to a rotary operating structure and a switching device. Background Technology

[0002] like Figure 1 As shown, in a typical rotary operating structure, multiple connecting parts 3 confine the transmission plate 2 to the operating wheel 1. When screws are used for fastening the connecting parts 3, they bear both the circumferential shear force when the operating wheel 1 rotates and the axial tensile force of the thread, which can easily cause fatigue fracture of the connecting parts 3, resulting in the failure of the connecting parts 3 and causing the switchgear containing the rotary operating structure to malfunction.

[0003] Patent CN219917046U discloses a manual operating mechanism for a low-voltage fixed circuit breaker. In this mechanism, the rear end of the bushing passing through the mechanism bracket is fixed to the traction crank arm by two crank arm fixing screws. This means that the rotating operating structure is constrained by multiple screws (crank arm fixing screws) to the operating wheel (shoulder sleeve). The screws bear both the circumferential shear force when the operating wheel rotates and the axial tension of the thread. After repeated use, the screws are prone to failure, causing the switchgear to malfunction. Utility Model Content

[0004] The purpose of this invention is to overcome at least one of the defects in the prior art and provide a rotary operating structure and switching device. This invention is stable and reliable in operation and has a long service life.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] One of the technical solutions of this utility model is to provide a rotary operating structure, which includes an operating wheel, a transmission plate, and a connecting part. The operating wheel is provided with a plurality of wheel limiting protrusions, and the transmission plate is provided with a plurality of plate limiting grooves. The operating wheel is tenon-and-mortise connected to the transmission plate through the wheel limiting protrusions and plate limiting grooves, thereby positioning the transmission plate on the operating wheel in the circumferential direction. The connecting part is installed at the rotation center of the transmission plate, and the rotation center of the transmission plate is fixed to the rotation center of the operating wheel using the connecting part. The connecting part does not bear the shear force when the operating wheel rotates, but only bears the axial tensile force of fastening, which has the advantages of stable and reliable operation and long service life.

[0007] The central axis of the connecting part coincides with the central axis of the operating wheel and the transmission plate, so that the torsional torque of the connecting part is 0 when the operating wheel rotates, thereby improving the service life of the connecting part and the stability of the entire rotating operating structure.

[0008] Furthermore, a number of wheel limiting protrusions are provided on the outer edge of the circumferential plane of the operating wheel. These wheel limiting protrusions are arranged in a circle to limit the transmission plate in the circumferential direction and bear the shearing torque when the operating wheel rotates.

[0009] As a preferred technical solution, the operating wheel and the wheel limiting protrusion are integrally formed.

[0010] Furthermore, a plurality of limiting grooves are provided on the outer edge of the circumferential plane of the transmission plate. These limiting grooves are arranged in a circle, and the shape and position of the limiting grooves are consistent with the shape and position of the wheel limiting protrusion.

[0011] Furthermore, a plate limiting protrusion is provided between adjacent plate limiting grooves, and the plate limiting protrusion is embedded between adjacent wheel limiting protrusions, so that the operating wheel and the transmission plate rotate together.

[0012] Furthermore, the two side surfaces of the wheel limiting protrusion serve as the wheel force-bearing surface, and the extension line of the wheel force-bearing surface points to the rotation center of the operating wheel. The two side surfaces of the plate limiting protrusion serve as the plate force-bearing surface, and the extension line of the plate force-bearing surface points to the rotation center of the transmission plate. The shape of the force-bearing surface is planar. The force directions of the wheel force-bearing surface and the plate force-bearing surface are both parallel to the circumferential rotational speed direction of the operating wheel and the transmission plate. This ensures that the connection part at the rotation center is not subjected to shear force.

[0013] As a preferred technical solution, the inner surface of the wheel limiting protrusion serves as the non-force-bearing surface of the wheel. The shape of the non-force-bearing surface is an arc surface that conforms to the radius of the operating wheel's setting position, and there is an arc transition between the force-bearing surface and the non-force-bearing surface of the wheel.

[0014] Furthermore, the transmission plate is provided with a transmission part, which drives adjacent transmission plates to rotate relative to each other.

[0015] Furthermore, the center of the plate limiting groove and the transmission part are arranged in a uniform circumferential pattern, so that the force on the transmission plate is more uniform during transmission.

[0016] Furthermore, the transmission plate is threaded or riveted to the operating wheel, and the connection part adopts screws or riveting blocks.

[0017] Furthermore, the transmission plate is threadedly connected to the operating wheel. When the connecting part is a screw, the rotation center of both the operating wheel and the transmission plate is provided with a connecting hole. The connecting hole is a threaded hole. The transmission plate is threadedly fixed to the operating wheel by passing the screw through the threaded hole, and the connection part is subjected to the tension when the operating wheel and the transmission plate are fastened together.

[0018] Alternatively, when the transmission plate is riveted to the operating wheel and the connecting part is a riveting block, the rotation center of the operating wheel is provided with a connecting part, and the rotation center of the transmission plate is provided with a connecting hole. This connecting hole is a riveting hole, and the transmission plate is riveted and fixed to the operating wheel by passing the riveting block through the riveting hole, so as to withstand the tension of the connecting part when the operating wheel and the transmission plate are fastened together.

[0019] One of the technical solutions of this utility model is to provide a switching device, which includes the aforementioned rotary operating structure.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) Compared with the traditional rotary operation structure, the rotary operation structure of this utility model adopts a single connecting part to fix the transmission plate to the operating wheel at the center of rotation, and uses a limiting protrusion integrally formed with the operating wheel to fix the transmission plate in the circumferential direction.

[0022] (2) Compared with the traditional rotary operation structure, which is prone to fatigue fracture of the connection, the fixed connection in this utility model does not bear the shear torque when the operating wheel rotates, but only bears the tension of the fixed transmission plate. This fixing method is more stable and the connection has a longer service life. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a rotation operation structure in the prior art;

[0024] Figure 2 This is an exploded view of the rotating operation structure in Embodiment 1 of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the operating wheel in Embodiment 1 of this utility model;

[0026] Figure 4 This is an assembly diagram of the rotary operation structure in Embodiment 1 of this utility model;

[0027] Figure 5 This is a schematic diagram of the force applied to the limiting protrusion in Embodiment 1 of this utility model;

[0028] Figure 6 This is an exploded view of the rotating operation structure in Embodiment 2 of this utility model;

[0029] Figure 7 This is an assembly diagram of the rotary operation structure in Embodiment 2 of this utility model.

[0030] Explanation of markings in the diagram:

[0031] 1—Operating wheel, 2—Transmission plate, 3—Connecting part;

[0032] 11—Wheel limiting protrusion; 12—Wheel bearing surface;

[0033] 21—Limiting protrusion, 22—Force-bearing surface, 23—Transmission part. Detailed Implementation

[0034] The present invention will now be described in detail with reference to specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., used to describe a common object only indicate different instances of the same object, and are not intended to imply that the objects described in this way must be in a given order, whether temporally, spatially, sequentially, or in any other way.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0037] Example 1:

[0038] A rotary operation structure, such as Figures 2 to 4 As shown, it includes an operating wheel 1, a transmission plate 2, and a connecting part 3. The operating wheel 1 is provided with several wheel limiting protrusions 11, and the transmission plate 2 is provided with several limiting grooves. The operating wheel 1 is connected to the transmission plate 2 by the wheel limiting protrusions 11 and the limiting grooves, and the transmission plate 2 is positioned on the operating wheel 1 in the circumferential direction. The connecting part 3 is installed at the rotation center of the transmission plate 2. The rotation center of the transmission plate 2 is fixed to the rotation center of the operating wheel 1 by the connecting part 3. The connecting part 3 does not bear the shear force when the operating wheel 1 rotates, but only bears the axial tensile force of the fastening. It has the advantages of stable and reliable operation and long service life.

[0039] The central axis of the connecting part 3 coincides with the central axis of the operating wheel 1 and the transmission plate 2, so that the torsional torque of the connecting part 3 is 0 when the operating wheel 1 rotates, thereby improving the service life of the connecting part 3 and the stability of the entire rotating operating structure.

[0040] Several wheel limiting protrusions 11 are provided on the outer edge of the circumferential plane of the operating wheel 1. The wheel limiting protrusions 11 are arranged in a circle to limit the transmission plate 2 in the circumferential direction and bear the shearing torque when the operating wheel 1 rotates.

[0041] The operating wheel 1 and the wheel limiting protrusion 11 are integrally formed;

[0042] Several limiting grooves are provided on the outer edge of the circumferential plane of the transmission plate 2. The limiting grooves are arranged in a circle, and the shape and position of the limiting grooves are consistent with the shape and position of the wheel limiting protrusion 11.

[0043] A plate limiting protrusion 21 is provided between adjacent plate limiting grooves. The plate limiting protrusion 21 is embedded between adjacent wheel limiting protrusions 11, so that the operating wheel 1 and the transmission plate 2 rotate together.

[0044] The transmission plate 2 is provided with a transmission part 23, which drives adjacent transmission plates 2 to rotate relative to each other.

[0045] The center of the plate limiting groove and the transmission part 23 is evenly arranged in a circle, so that the force on the transmission plate 2 is more even during transmission. In this embodiment, there are three wheel limiting protrusions 11 and three plate limiting grooves, and two plate limiting protrusions 21. The three plate limiting grooves and the transmission part 23 are arranged at 90° to each other.

[0046] The transmission plate 2 is threadedly connected to the operating wheel 1, and the connecting part 3 is made of screws;

[0047] Both the operating wheel 1 and the transmission plate 2 have connection holes at their rotation centers. The connection holes are threaded holes. The transmission plate 2 is threaded and fixed to the operating wheel 1 by passing screws through the threaded holes. The connection part 3 bears the tension when the operating wheel 1 and the transmission plate 2 are fastened together.

[0048] like Figure 5 As shown, the two sides of the wheel limiting protrusion 11 serve as the wheel force-bearing surface 12, and the extension line of the wheel force-bearing surface 12 points to the rotation center of the operating wheel 1. The two sides of the plate limiting protrusion 21 serve as the plate force-bearing surface 22, and the extension line of the plate force-bearing surface 22 points to the rotation center of the transmission plate 2. The shape of the force-bearing surface is a plane. The force directions of the wheel force-bearing surface 12 and the plate force-bearing surface 22 are parallel to the circumferential rotation speed direction of the operating wheel 1 and the transmission plate 2. This ensures that the connecting part 3 at the rotation center will not be subjected to shear force.

[0049] The inner surface of the wheel limiting protrusion 11 serves as the non-force-bearing surface of the wheel. The shape of the non-force-bearing surface is selected to be an arc surface that fits the radius of the setting position of the operating wheel 1. The force-bearing surface 12 of the wheel and the non-force-bearing surface of the wheel are connected by an arc.

[0050] A switching device comprising the above-described structure.

[0051] Example 2:

[0052] A rotary operation structure, such as Figure 6 and Figure 7 As shown, it is basically the same as in Embodiment 1, except that the transmission plate 2 is riveted to the operating wheel 1, and the connecting part 3 is a riveting block.

[0053] The rotation center of the operating wheel 1 is provided with a connecting part 3, and the rotation center of the transmission plate 2 is provided with a connecting hole. The connecting hole is a riveting hole. The transmission plate 2 is riveted and fixed to the operating wheel 1 by passing through the riveting hole with a riveting block, and the connecting part 3 bears the tension when the operating wheel 1 and the transmission plate 2 are tightly connected.

[0054] A switching device comprising the above-described structure.

[0055] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A rotary operation structure, characterized in that, The structure includes an operating wheel (1), a transmission plate (2), and a connecting part (3). The operating wheel (1) is provided with several wheel limiting protrusions (11), and the transmission plate (2) is provided with several limiting grooves. The operating wheel (1) is connected to the transmission plate (2) by the wheel limiting protrusions (11) and the limiting grooves. The transmission plate (2) is positioned on the operating wheel (1) in the circumferential direction. The connecting part (3) is installed at the rotation center of the transmission plate (2). The rotation center of the transmission plate (2) is fixed to the rotation center of the operating wheel (1) by the connecting part (3). The central axis of the connecting part (3) coincides with the central axis of the operating wheel (1) and the transmission plate (2).

2. The rotary operation structure according to claim 1, characterized in that, The outer edge of the circumferential plane of the operating wheel (1) is provided with a number of wheel limiting protrusions (11), which are arranged in a circle.

3. The rotary operation structure according to claim 2, characterized in that, The transmission plate (2) has several limiting grooves on the outer edge of its circumferential plane. The limiting grooves are arranged in a circle, and the shape and position of the limiting grooves are consistent with the shape and position of the wheel limiting protrusion (11).

4. The rotary operation structure according to claim 3, characterized in that, A plate limiting protrusion (21) is provided between adjacent plate limiting grooves, and the plate limiting protrusion (21) is embedded between adjacent wheel limiting protrusions (11).

5. The rotary operation structure according to claim 4, characterized in that, The two sides of the wheel limiting protrusion (11) serve as the wheel force-bearing surface (12), and the extension line of the wheel force-bearing surface (12) points to the rotation center of the operating wheel (1). The two sides of the plate limiting protrusion (21) serve as the plate force-bearing surface (22), and the extension line of the plate force-bearing surface (22) points to the rotation center of the transmission plate (2). The shape of the force-bearing surface is planar.

6. The rotary operation structure according to claim 3, characterized in that, The transmission plate (2) is provided with a transmission part (23), which drives adjacent transmission plates (2) to rotate relative to each other.

7. The rotary operation structure according to claim 6, characterized in that, The plate limiting groove and the transmission part (23) are arranged in a uniform circumferential arrangement at their center positions.

8. The rotary operation structure according to claim 1, characterized in that, The transmission plate (2) is threaded or riveted to the operating wheel (1), and the connecting part (3) is made of screws or riveting blocks.

9. A rotary operation structure according to claim 8, characterized in that, The transmission plate (2) is threadedly connected to the operating wheel (1). When the connecting part (3) is a screw, the rotation center of the operating wheel (1) and the transmission plate (2) are provided with a connecting hole. The connecting hole is a threaded hole. The transmission plate (2) is threadedly connected and fixed to the operating wheel (1) by passing the screw through the threaded hole. Alternatively, when the transmission plate (2) is riveted to the operating wheel (1) and the connecting part (3) is a riveting block, the operating wheel (1) has a connecting part (3) at its rotation center and the transmission plate (2) has a connecting hole at its rotation center. The connecting hole is a riveting hole, and the transmission plate (2) is riveted and fixed to the operating wheel (1) by passing the riveting block through the riveting hole.

10. A switching device, characterized in that, The device includes a rotary operating structure as described in any one of claims 1 to 9.

Images