An operating mechanism for a rotary switch

Abstract

The present invention discloses an operating mechanism for a rotary switch, which belongs to the technical field of rotary switches. It includes a mounting base, in which an operating lever assembly for manual rotation, a first spring and a turntable assembly are sequentially provided from top to bottom; the operating lever assembly includes a first coupling and a guide member, and the first coupling is provided with a plurality of semi-cylinders; the guide member is a guide block, a ring and a cylindrical tube connected sequentially from top to bottom; the top of the guide block is provided with a plurality of notches with a side wall being an inclined surface. With the assistance of the first spring, the present invention rotates the first coupling 360° and adopts radial-axial-radial motion to realize the opening and closing of the operating mechanism. Compared with the existing method of using torsion springs, on the one hand, it can avoid the contact bounce phenomenon, thereby extending the service life; on the other hand, it can avoid the stress concentration at the bending part of the torsion spring due to the torsion spring, thereby increasing the reliability of the operating mechanism.

Description

Technical Field

[0001] The invention relates to an operating mechanism for a rotary switch, belonging to the technical field of rotary switches. Background Art

[0002] At present, the traditional operating mechanism mainly adopts the torsion spring type, which realizes the opening / closing of the operating mechanism by rotating 90° to the left or 90° to the right.

[0003] In the process of rotating the traditional contact to 90° left or right, the torsion spring will store and release energy, causing the contact to bounce. This bouncing is not conducive to arc extinguishing and affects the electrical life of the contact.

[0004] In addition, the use of torsion springs will affect their service life because the stress is concentrated at their bends.

[0005] Therefore, in view of the above situation, it is necessary to design an operating mechanism for a rotary switch using a compression spring structure to solve the above problem. Summary of the Invention

[0006] The present invention aims to solve the technical problems mentioned in the above background technology by adopting the following technical solutions:

[0007] An operating mechanism for a rotary switch comprises a mounting base, wherein an operating lever assembly for manual rotation, a first spring and a rotary disk assembly are sequentially arranged in the mounting base from top to bottom;

[0008] The operating rod assembly includes a first coupling and a guide member, wherein the first coupling is provided with a plurality of semi-cylinders;

[0009] The guide member is a guide block, a ring and a cylindrical barrel connected in sequence from top to bottom;

[0010] The top of the guide block is provided with a plurality of notches with a side wall being an inclined surface, and when each of the semi-cylinders passes through the inclined surface to the bottom of the notch, the radial movement of the first coupling is realized to drive the guide member to move axially;

[0011] The upper end of the first spring is sleeved on the cylindrical tube, and the top of the first spring is in contact with the bottom of the ring;

[0012] The lower end of the first spring is sleeved on the second coupling, and the lower end of the first spring is in contact with the inner bottom of the mounting base;

[0013] The cylindrical tube is sleeved inside the second coupling. When the semi-cylinder contacts the inclined surface of the notch on one side wall and rotates, the cylindrical tube and the first spring move axially on the second coupling.

[0014] The cylindrical tube is provided with a driving assembly, and the interior of the second coupling is provided with an auxiliary structure for matching the driving assembly, which is used to drive the second coupling to move radially by the axial movement of the driving assembly with the assistance of the auxiliary structure.

[0015] Furthermore, the inclined surface is an inclined straight surface or an inclined curved surface.

[0016] Preferably, the operating rod assembly further includes a shaft, which is plugged into the inner top of the first coupling and is used to drive the first coupling to rotate.

[0017] Preferably, the number of the semi-cylinders is four, and the number of the notches on the guide block is also four;

[0018] When one of the semi-cylinders passes through the notch in one of the slots, the inclined surface, and the notch in the other slot in sequence, the first coupling realizes the back-and-forth axial movement of the guide member under the conditions of rotating 90°, 180°, 270° and 360°.

[0019] Furthermore, when one of the semi-cylinders passes through the notch on one of the slots, through the inclined surface where the slot is located, to the highest point of the other slot, and then through the highest point to the notch where the semi-cylinder is located, the first spring is compressed and rebounded, which is counted as one cycle, and the angles rotated by the first coupling at this time are as follows:

[0020] A. When the first coupling rotates 90 degrees clockwise or counterclockwise, it is a cycle, such as a closing operation;

[0021] B. When the first coupling rotates 180 degrees clockwise or counterclockwise, it is one cycle, such as the opening operation;

[0022] C. When the first coupling rotates 270 degrees clockwise or counterclockwise, it is one cycle, such as a closing operation;

[0023] D. When the first coupling rotates 360 degrees clockwise or counterclockwise, it is one cycle, such as a tripping operation.

[0024] Preferably, a first protrusion is provided on the side wall of the circular ring, a limiting groove matching the first protrusion is provided on the side wall of the mounting base, and the first protrusion is installed in the limiting groove.

[0025] Preferably, the drive assembly includes a drive shaft and two arc blocks, the drive shaft is installed in a drive groove in the cylindrical barrel, and a second spring is further provided in the drive groove, the second spring is used to limit the axial movement of the drive shaft and act as a buffer for the drive shaft;

[0026] Two arc blocks are respectively provided on the lower side wall of the circular ring, and each of the arc blocks is provided with a first inclined surface; the side walls of the second protrusion on the second coupling are respectively provided with a second inclined surface, and the first inclined surface and the second inclined surface match;

[0027] The auxiliary structure includes four limiting grooves provided on the second coupling, and a third inclined surface is provided inside each limiting groove, and the position at the lowest point of the third inclined surface is set as the vertex;

[0028] When the vertex is not in contact with the drive shaft, the two first inclined surfaces push the two second inclined surfaces, causing the second coupling to start rotating. When the semi-cylinder passes over the inclined surfaces and enters the gap, it is in the unlocked state.

[0029] Under the action of the first spring, the ring on the top guide member causes the guide member to rebound. At this time, the drive shaft will rebound along the third inclined surface in the limit groove, so that the drive shaft drives the second coupling to rotate during the rising process in the limit groove. When the drive shaft enters another limit groove, the second coupling stops rotating.

[0030] Furthermore, the first inclined surface, the second inclined surface and the third inclined surface are all inclined straight surfaces or inclined curved surfaces.

[0031] Preferably, the bottom of the second coupling is connected to a third coupling, and the bottom of the third coupling is connected to a contact rotating seat. The third coupling cooperates with the contact rotating seat to enable the contacts on the contact rotating seat to rotate clockwise or counterclockwise to achieve closing or opening operations.

[0032] The beneficial effects of the present invention are as follows: with the assistance of the first spring, the present invention rotates the first coupling 360° and adopts radial-axial-radial movement to realize the opening and closing of the operating mechanism. Compared with the existing method of using torsion springs, on the one hand, it can avoid the contact bounce phenomenon, thereby extending the service life; on the other hand, it avoids the stress concentration at the bending point of the torsion spring due to the torsion spring, thereby increasing the reliability of the operating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 is a cross-sectional view of the present invention;

[0035] Figure 3 An exploded view of the present invention;

[0036] Figure 4 It is an enlarged structural diagram of the first coupling, the guide member and the second coupling in the present invention;

[0037] Figure 5Schematic diagram of the structure of the guide member in the present invention;

[0038] Figure 6 for Figure 5 Schematic diagram of the structure in the AA direction;

[0039] Figure 7 Schematic diagram of the structure of the second coupling in the present invention;

[0040] Figure 8 for Figure 7 Schematic diagram of the structure in the middle BB direction;

[0041] Figure 9 Schematic diagram of the structure of the connection between the middle shaft and the first coupling of the present invention;

[0042] Figure 10 Schematic diagram of the structure when the third coupling and the contact rotating seat are connected in the present invention;

[0043] In the figure: mounting base 1; first coupling 2; semi-cylinder 21; square groove 22; circular notch 23; guide member 3; notch 31; inclined surface 32; notch 33; first inclined surface 34; drive groove 35; first spring 6; second coupling 7; limit groove 71; second inclined surface 72; third inclined surface 73; vertex 74; semi-arc shell 9; third coupling 8; square hole 81; first protrusion 10; shaft 11; circular gasket 111; square block 112; contact 12, square column 13. DETAILED DESCRIPTION

[0044] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further explained below with reference to specific illustrations.

[0045] Example 1

[0046] like Figure 1-10 As shown, an operating mechanism for a rotary switch includes a mounting base 1, wherein the mounting base 1 is provided with an operating lever assembly for manual rotation, a first spring, and a rotary disk assembly from top to bottom;

[0047] The operating rod assembly includes a first coupling 2 and a guide member 3. The first coupling 2 is provided with a plurality of semi-cylinders 21;

[0048] The guide member 3 is a guide block, a ring and a cylinder connected in sequence from top to bottom;

[0049] The top of the guide block is provided with a plurality of slots 31 with a side wall being an inclined surface 32. When each semi-cylinder 21 passes through the inclined surface 32 to the bottom of the slot 31, the radial movement of the first coupling 2 is realized to drive the guide member 3 to move axially.

[0050] The upper end of the first spring 6 is sleeved on the cylindrical tube, and the top of the first spring 6 is in contact with the bottom of the ring;

[0051] The turntable assembly includes a second coupling 7, the lower end of the first spring 6 is sleeved on the second coupling 7, and the lower end of the first spring 6 is in contact with the bottom of the mounting base 1;

[0052] It should be noted that the mounting base 1 is formed by installing two axially symmetrical semi-arc shells 9. The interior of the arc shell 9 where the mounting base 1 is located is provided with a step, and the lower end of the first spring 6 contacts the step. Figure 2 As shown,

[0053] The cylindrical tube is sleeved inside the second coupling 72. When the semi-cylinder 21 contacts the inclined surface 32 where the notch 31 with a side wall having an inclined surface 32 is located and rotates, the cylindrical tube and the first spring 6 move axially on the second coupling 7.

[0054] A driving assembly is provided on the cylindrical tube, and an auxiliary structure for matching the driving assembly is provided inside the second coupling 7, which is used to drive the second coupling 7 to move radially by the axial movement of the driving assembly with the assistance of the auxiliary structure.

[0055] It should be noted here that, since the driving assembly is provided on the cylindrical barrel, and the cylindrical barrel performs axial movement on the second coupling 7, the cylindrical barrel also performs axial movement.

[0056] It should be noted that the inclined surface 32 is an inclined curved surface.

[0057] The operating rod assembly further includes a shaft 11 , which is plugged into the inner top of the first coupling 2 for driving the first coupling 2 to rotate.

[0058] It should be noted that a circular gasket 111 is sleeved on the shaft 11, and a square block 112 is provided at the bottom of the shaft 11. A square groove 22 matching the square block 112 is provided at the top of the first coupling 2, and a circular notch 23 matching the circular gasket 111 is provided at the top of the assembly formed by assembling the two semi-arc-shaped shells 9 of the mounting base 1. Figure 9 As shown;

[0059] When the square block 112 of the shaft 11 is inserted into the square groove 22 of the first coupling 2 , the circular gasket 111 is then inserted into and fixed in the circular notch 23 .

[0060] The number of the semi-cylinders 21 is four, and the number of the notches 31 on the guide block is also four;

[0061] When one of the semi-cylinders 21 passes through the notch 33 in one of the slots 31, the inclined surface 32, and the notch 33 in the other slot 31 in sequence, the first coupling 6 realizes the back-and-forth axial movement of the guide member under the conditions of rotating 90°, 180°, 270° and 360°.

[0062] Furthermore, when one of the semi-cylinders 21 passes through the notch 33 on one of the slots 31 and the inclined surface 32 where the slot 31 is located to the highest point of the other slot 31; it should be noted that when one slot 31 is adjacent to the other slot 31 and then passes through the highest point to the notch 33 of the slot 31 where the semi-cylinder 21 is located, the first spring 6 is compressed and rebounded, which is counted as one cycle, and the angles rotated by the first coupling 7 at this time are as follows:

[0063] A. When the first coupling 2 rotates 90 degrees clockwise or counterclockwise, it is a cycle, such as a closing operation;

[0064] B. When the first coupling 2 rotates 180 degrees clockwise or counterclockwise, it is one cycle, such as a tripping operation;

[0065] C. When the first coupling 2 rotates 270 degrees clockwise or counterclockwise, it is one cycle, such as a closing operation;

[0066] D. When the first coupling 2 rotates 360 degrees clockwise or counterclockwise, it is one cycle, such as a tripping operation.

[0067] It should be noted that the closing operation mentioned in A and C and the opening operation mentioned in B and D above mainly refer to:

[0068] The contacts on the contact rotating seat; mainly refers to the contactor's moving contact piece on the contactor that is in the closed state when in contact with the static contact piece on the disconnector, and in the open state when separated.

[0069] The drive assembly includes a drive shaft 4 and two arc blocks. The drive shaft is installed in a drive groove 35 in the cylindrical barrel. A second spring 5 is also provided in the drive groove 35. The second spring 5 is used to limit the axial movement of the drive shaft 4 and act as a buffer for the drive shaft 4.

[0070] Two arc blocks are respectively provided on the lower side wall of the circular ring; it should be noted that the circular ring and the arc block are integrally formed, and each arc block is provided with a first inclined surface 34; the side wall of the second protrusion on the second coupling 7 is respectively provided with a second inclined surface 72, and the first inclined surface 34 and the second inclined surface 72 match;

[0071] The auxiliary structure includes four limiting grooves 71 provided on the second coupling 7, and a third inclined surface 73 is provided inside each limiting groove 71, and the position at the lowest point of the third inclined surface 73 is set as a vertex 74;

[0072] When the vertex 74 is not in contact with the drive shaft 4, the two first inclined surfaces 34 push the two second inclined surfaces 72, causing the second coupling 7 to start rotating. When the semi-cylinder 21 passes over the inclined surfaces 32 and enters the notch 33, it is in the unlocked state.

[0073] Under the action of the first spring 6, the ring on the top guide member 3 causes the guide member 3 to rebound. At this time, the drive shaft 4 will rebound along the third inclined surface 73 in the limiting groove 71, so that the drive shaft 4 drives the second coupling 7 to rotate during the rising process in the limiting groove 71. When the drive shaft 4 enters another limiting groove 71, the second coupling 7 stops rotating.

[0074] A first protrusion 10 is provided on the side wall of the ring, and a limiting groove 71 matching the first protrusion 10 is provided on the side wall of the mounting base 1 . The first protrusion 10 is mounted in the limiting groove 71 .

[0075] It should be noted that both the first inclined surface 34 and the second inclined surface 72 are inclined straight surfaces, and the third inclined surface 73 is an inclined curved surface.

[0076] The bottom of the second coupling 7 is connected to the third coupling 8, and the bottom of the third coupling 8 is connected to the contact rotating seat. The third coupling 8 cooperates with the contact rotating seat to enable the contact 12 on the contact rotating seat to rotate clockwise or counterclockwise to achieve closing or opening operations.

[0077] It should be noted that a square hole 81 is provided at the bottom of the third coupling 8, and a square column 13 is provided on the contact rotating seat. When the square hole 81 of the third coupling 8 is inserted into the square column 13, the connection between the third coupling 8 and the contact rotating seat is realized. Figure 10 shown.

[0078] It should be noted that the rotation of the second coupling 7 drives the rotation of the third coupling 8 , thereby driving the rotation of the contact 12 .

[0079] Example 2

[0080] This embodiment is basically the same as the embodiment 1, except that the inclined surface 32 is an inclined straight surface.

[0081] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. Various changes and improvements can be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An operating mechanism for a rotary switch, characterized in that: include A mounting base, wherein the mounting base is provided with an operating lever assembly for manual rotation, a first spring, and a turntable assembly in sequence from top to bottom; The operating rod assembly includes a first coupling and a guide member, wherein the first coupling is provided with a plurality of semi-cylinders; The guide member is a guide block, a ring and a cylindrical barrel connected in sequence from top to bottom; The top of the guide block is provided with a plurality of notches with a side wall being an inclined surface, and when each of the semi-cylinders passes through the inclined surface to the bottom of the notch, the radial movement of the first coupling is realized to drive the guide member to move axially; The upper end of the first spring is sleeved on the cylindrical tube, and the top of the first spring is in contact with the bottom of the ring; The lower end of the first spring is sleeved on the second coupling, and the lower end of the first spring is in contact with the inner bottom of the mounting base; The cylindrical tube is sleeved inside the second coupling. When the semi-cylinder contacts the inclined surface of the notch on one side wall and rotates, the cylindrical tube and the first spring move axially on the second coupling. The cylindrical tube is provided with a driving assembly, and the interior of the second coupling is provided with an auxiliary structure for matching the driving assembly, which is used to drive the second coupling to move radially by the axial movement of the driving assembly with the assistance of the auxiliary structure.

2. The operating mechanism for a rotary switch according to claim 1, characterized in that: The operating rod assembly further comprises a shaft, which is plugged into the inner top of the first coupling and is used to drive the first coupling to rotate.

3. The operating mechanism for a rotary switch according to claim 1, characterized in that: The number of the semi-cylinders is four, and the number of the notches on the guide block is also four; When one of the semi-cylinders passes through the notch in one of the slots, the inclined surface, and the notch in the other slot in sequence, the first coupling realizes the back-and-forth axial movement of the guide member under the conditions of rotating 90°, 180°, 270° and 360°.

4. The operating mechanism for a rotary switch according to claim 1, characterized in that: A first protrusion is provided on the side wall of the circular ring, and a limiting groove matching the first protrusion is provided on the side wall of the mounting base, and the first protrusion is installed in the limiting groove.

5. The operating mechanism for a rotary switch according to claim 4, characterized in that: The drive assembly includes a drive shaft and two arc blocks. The drive shaft is installed in a drive groove in the cylindrical barrel. A second spring is also provided in the drive groove. The second spring is used to limit the axial movement of the drive shaft and act as a buffer for the drive shaft. Two arc blocks are respectively provided on the lower side wall of the circular ring, and each of the arc blocks is provided with a first inclined surface; the side walls of the second protrusion on the second coupling are respectively provided with a second inclined surface, and the first inclined surface and the second inclined surface match; The auxiliary structure includes four limiting grooves provided on the second coupling, and a third inclined surface is provided inside each limiting groove, and the position at the lowest point of the third inclined surface is set as the vertex; When the vertex is not in contact with the drive shaft, the two first inclined surfaces push the two second inclined surfaces, causing the second coupling to start rotating. When the semi-cylinder passes over the inclined surfaces and enters the gap, it is in the unlocked state. Under the action of the first spring, the ring on the top guide member causes the guide member to rebound. At this time, the drive shaft will rebound along the third inclined surface in the limit groove, so that the drive shaft drives the second coupling to rotate during the rising process in the limit groove. When the drive shaft enters another limit groove, the second coupling stops rotating.

6. The operating mechanism for a rotary switch according to claim 5, characterized in that: The bottom of the second coupling is connected to a third coupling, and the bottom of the third coupling is connected to a contact rotating seat. The third coupling cooperates with the contact rotating seat to enable the contacts on the contact rotating seat to rotate clockwise or counterclockwise to achieve closing or opening operations.

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