Isolating switch operating mechanism
By adopting the rod transmission design in the isolating switch operating mechanism, the problems of high weight, high cost and rising spring force in the prior art are solved, and the effects of lower cost and longer mechanical life are achieved.
Patent Information
- Application Number
- CN202323446242.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-18
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2033-12-18
AI Technical Summary
Due to the use of gear transmission, the existing isolating switch operating mechanism has high weight, large volume and high cost. As the switching capacity increases, the spring force needs to increase significantly, causing an impact on the shell, and the structure needs to be strengthened independently to ensure the mechanical life.
The rod is used for transmission, and the gear structure is not used. The crank, drive rod, rotating shaft, connector and elastic components are designed. The drive rod is driven by the crank 90° rotation, thereby achieving 120° rotation of the contact, making full use of the shell structure to make the spring force Release directly onto the housing.
It greatly reduces the use of materials and the number of parts, reduces the cost of mechanism, increases the contact opening distance, and reduces the impact on the shell, and extends the mechanical life.
Smart Images
Figure CN222440442U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of manufacturing and application technology of low-voltage electrical appliances, in particular to an isolating switch operating mechanism. Background Art
[0002] At present, a large number of isolating switches on the market have adopted modular structural design. The component modules of such isolating switches include operating mechanism modules. If the contact needs to move 120° when the handle is operated 90°, most of the operating mechanism modules use gear transmission, which is heavy and large in size, resulting in high cost. In addition, as the switch capacity increases, the spring force needs to increase significantly, which causes obvious impact on the shell, and often requires an independent reinforcement structure to ensure the mechanical life of the mechanism. In response to the above problems, this patent proposes the use of rods for transmission without using gear structures, which greatly reduces the use of materials and realizes the operation of driving the contacts to rotate 120° when the handle is rotated 90°. In addition, the shell structure is fully utilized to release the spring force directly to the shell, reducing the number of parts. In summary, this design greatly reduces the cost of the mechanism. Utility Model Content
[0003] The utility model aims to provide an isolating switch operating mechanism to solve the problems in the prior art of high weight and large volume, resulting in high cost, and with the increase of switch capacity, its spring force needs to increase significantly, causing obvious impact on the shell.
[0004] To achieve the above object, the utility model provides the following technical solutions: an isolating switch operating mechanism, comprising: a crank, a driving rod, a rotating shaft, a connecting piece and an elastic component, wherein the driving rod is arranged at one side of the bottom end of the outer wall of the crank, the rotating shaft is located below the crank, and the rotating shaft and the elastic component are connected by a connecting piece;
[0005] The rotating shaft is composed of a first rotating base plate, a second rotating base plate, a third rotating base plate, a first connecting column, a first lever and a second lever. The first rotating base plate, the second rotating base plate and the third rotating base plate are arranged in parallel and on the same axis. The first connecting column is arranged between the first rotating base plate and the second rotating base plate along the axis direction of the first rotating base plate. The first lever and the second lever are mirror-imaged between the second rotating base plate and the third rotating base plate. The top end of the connecting member is rotatably connected to the first connecting column.
[0006] Preferably, the elastic component includes: two sliders, a connecting plate, a second connecting column and two elastic members, the two sliders are symmetrically arranged below the rotating shaft and are linked by the connecting plate, the second connecting column is arranged on the connecting plate, and the second connecting column is parallel to the first connecting column, the second connecting column is rotatably connected to the bottom end of the connecting member, and the two elastic members are arranged on the bottom surfaces of the two sliders.
[0007] Preferably, the rotation range of the driving rod is located between the second rotating base plate and the third rotating base plate.
[0008] Preferably, the outer end surfaces of the first rotating base plate and the third rotating base plate are respectively provided with limiting grooves, the outer end surfaces of the first rotating base plate and the third rotating base plate are respectively abutted with end covers, and the inner end surfaces of the end covers are provided with rotating blocks matching the limiting grooves.
[0009] Preferably, the crank can rotate at an angle between 0° and 90°, and the rotating shaft can rotate at an angle between 0° and 240°.
[0010] Preferably, the outer end surface of the end cover is provided with a plum key.
[0011] Preferably, the two sliders are in an inverted bowl-shaped structure, and the top of the spring is located in the inner cavity of the slider.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. No gear structure is used, and rod drive is adopted to reduce materials and costs;
[0014] 2. The contact opening can be 120°, which greatly increases the contact opening distance compared to the common 90°;
[0015] 3. The structural design of the shell reduces the number of parts used. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the utility model;
[0017] Figure 2 This is an explosion diagram of the utility model;
[0018] Figure 3 It is a partial schematic diagram of the utility model;
[0019] Figure 4 This is a schematic diagram of the utility model in the open state;
[0020] Figure 5 This is a schematic diagram of the closing process of the utility model;
[0021] Figure 6 This is a schematic diagram of the closing state of the utility model;
[0022] In the figure: 11, left shell, 12, right shell, 13, upper cover, 21, placement groove, 22, second protrusion, 31, auxiliary groove, 32, spring sheet, 41, crank, 42, connecting rib plate, 43, driving rod, 51, first rotating base plate, 52, second rotating base plate, 53, third rotating base plate, 54, first connecting column, 55, first shift rod, 56, second shift rod, 61, first part of connecting rod, 62, second part of connecting rod, 63, locking screw, 71, slider, 72, connecting plate, 73, second connecting column, 74, elastic member, 8, limiting groove, 91, end cover, 92, rotating block, 93, slot, 94, plum key, 10, base, 101, first protrusion. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-6 The utility model provides a technical solution for an isolating switch operating mechanism, and its detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and the specific operations are as follows.
[0025] An isolating switch operating mechanism includes: a crank 41, a driving rod 43, a rotating shaft, a connecting piece and an elastic component. The driving rod 43 is arranged on one side of the bottom end of the outer wall of the crank 41, the rotating shaft is located below the crank 41, and the rotating shaft and the elastic component are connected by a connecting piece.
[0026] A connecting rib plate 42 is provided between the crank 41 and the driving rod 43. The driving rod 43 rotates around the rotation axis of the crank 41. The horizontal cross-section of the driving rod 43 is a cylindrical structure to ensure smoothness with the first lever 55 and the second lever 56. The top of the crank 41 can be connected to the handle or the extended shaft of the mechanism outside the cabinet. Two through holes for use with the first connecting column 54 and the second connecting column 73 are provided on the connecting piece. The connecting piece is composed of a first connecting rod part 61 and a second connecting rod part 62, and is fixed by a locking screw 63. The first connecting rod part 61 and the second connecting rod part 62 each have a half circular hole. The elastic component is used for energy storage and driving mechanism movement.
[0027] The rotating shaft is composed of a first rotating base plate 51, a second rotating base plate 52, a third rotating base plate 53, a first connecting column 54, a first lever 55 and a second lever 56. The first rotating base plate 51, the second rotating base plate 52 and the third rotating base plate 53 are arranged in parallel and on the same axis. The first connecting column 54 is arranged between the first rotating base plate 51 and the second rotating base plate 52 along the axis direction of the first rotating base plate 51. The first lever 55 and the second lever 56 are mirror-imaged between the second rotating base plate 52 and the third rotating base plate 53. The top end of the connecting member is rotatably connected to the first connecting column 54.
[0028] The first rotating base plate 51, the second rotating base plate 52 and the third rotating base plate 53 are cylindrical plate structures, and the three are coaxially arranged in parallel and connected by a first connecting column 54, a first lever 55 and a second lever 56. Structures such as ribs can be appropriately added between the first rotating base plate 51, the second rotating base plate 52 and the third rotating base plate 53 to increase the overall strength of the rotating shaft.
[0029] The elastic component includes: two sliders 71, a connecting plate 72, a second connecting column 73 and two elastic members 74. The two sliders 71 are symmetrically arranged below the rotating shaft and are linked by the connecting plate 72. The second connecting column 73 is arranged on the connecting plate 72, and the second connecting column 73 is parallel to the first connecting column 54. The second connecting column 73 is rotatably connected to the bottom end of the connecting member. The two elastic members 74 are arranged on the bottom surfaces of the two sliders 71.
[0030] The two sliders 71 can only move in the vertical direction, and the displacement distance of the two sliders 71 in the vertical direction is greater than the displacement distance of the bottom end of the connecting member when the rotating shaft rotates. The connecting plate 72 connects the two sliders 71. The two elastic members 74 can be springs, elastic supports, etc., as long as they have elastic force in the movable direction of the two sliders 71.
[0031] The rotation range of the driving rod 43 is located between the second rotating base plate 52 and the third rotating base plate 53.
[0032] When the driving rod 43 rotates with the crank 41 as the rotation axis, the driving rod 43 rotates between the second rotating base plate 52 and the third rotating base plate 53 and contacts the first shifting rod 55 and the second shifting rod 56 respectively.
[0033] The outer end surfaces of the first rotating bottom plate 51 and the third rotating bottom plate 53 are respectively provided with limiting grooves 8, the outer end surfaces of the first rotating bottom plate 51 and the third rotating bottom plate 53 are respectively abutted with end covers 91, and the inner end surfaces of the end covers 91 are provided with rotating blocks 92 matching the limiting grooves 8.
[0034] The limiting groove 8 is an arc-shaped groove, and there are two of them. The two limiting grooves 8 are mirror-imaged and located at the same center of a circle, and at the same axis as the rotating shaft. The two limiting grooves 8 are not connected. The rotating block 92 on the inner end surface of the end cover 91 is adapted to the limiting groove 8, and sliding can occur between the rotating block 92 and the limiting groove 8, so that when the rotating shaft rotates 240°, the end cover 91 rotates 120°.
[0035] The crank 41 can rotate at an angle between 0° and 90°, and the rotation axis can rotate at an angle between 0° and 240°.
[0036] The outer end surface of the end cover 91 is provided with a plum key.
[0037] The outer end surface of the end cover 91 is connected to the contact system module. The outer end surface of the end cover 91 can adopt different structures such as a plum blossom key 94, a plum blossom groove, a spline, etc. to be suitable for the contact system module.
[0038] The two sliders 71 are in an inverted bowl-shaped structure, and the top of the spring is located in the inner cavity of the slider 71.
[0039] The spring is located in the inner cavity of the two sliders 71 , and the length of the spring is greater than the depth of the inner cavity of the two sliders 71 , so the spring is fixed.
[0040] The housing 11 and the right housing 12 are fixed by bolts, and the upper cover 13 is snap-fitted to the upper part of the left housing 11 and the right housing 12 to form a complete housing. The upper cover 13 is mounted on the top of the housing, and the two lower feet 10 are mounted on both sides of the bottom of the housing to realize the installation and fixation of the housing with external equipment. The inner cavity of the housing has an installation chamber for the elastic component, and the housing is used to limit the two sliders 71 to slide only in the vertical direction. The end covers 91 on the outer end surfaces of the first rotating bottom plate 51 and the third rotating bottom plate 53 are respectively rotatably mounted on the main extension of the left housing 11 and the right housing 12. The first rotating base plate 51 and the third rotating base plate 53 are placed in the placement groove 21, and the rotating shaft can rotate on the same axis as the end cover 91. An auxiliary groove 31 is provided above the placement groove 21, and a spring sheet 32 is installed in the auxiliary groove 31, and the spring sheet 32 extends into the placement groove 21. A clamping groove 93 is provided on the annular outer wall of the end cover 91 at a rotation angle of 120°. One end of the spring sheet 32 extending into the placement groove 21 can be clamped in the clamping groove 93. At the same time, the outer end surfaces of the first rotating base plate 51 and the third rotating base plate 53, and the first protrusions 101 are respectively provided at the positions outside the limiting groove 8, and the inner wall of the placement groove 21 is provided with a corresponding second protrusion 22 to limit the rotatable angle of the rotating shaft to 240°.
[0041] Example:
[0042] like Figure 4In the open state, when the crank 41 is rotated clockwise, the drive rod 43 rotates synchronously, and the drive rod 43 abuts against the first lever 55, thereby driving the rotating shaft to rotate counterclockwise. At this time, the bottom of the connecting member presses the connecting plate 72 downward, and the two sliders 71 slide vertically downward, and the two elastic members 74 are compressed. When the movement state continues until Figure 5 When the spring is at the maximum compression, the connecting piece is in a vertical state, and the rotating shaft rotates 120°. When the rotating shaft continues to rotate, the connecting piece tilts, and the elastic piece 74 is released. By utilizing the reaction force of the elastic piece 74, the slider 71 moves up quickly. Under the restriction of the first protrusion 101 and the second protrusion 22, the connecting piece drives the rotating shaft to continue rotating 120°, and finally reaches Figure 6 The closing state is Figure 5 The status lasts until Figure 6 During the process of the state, that is, during the process of the elastic member 74 releasing the elastic force, the driving rod 43 does not generate pressure on the first lever 55, but the second lever 56, under the action of the elastic member 74, quickly rotates with the rotating shaft, contacts the driving rod 43, and drives the driving rod 43 to move until the driving rod 43 rotates 90°, that is, reaches the closing position. During the rotation of the rotating shaft, there is an idle stroke between the limit groove 8 and the rotating block 92, that is, the first 120° rotation of the rotating shaft is an idle stroke, so that after the rotating shaft rotates 240°, the end cover 91 rotates 120°, and the last 120° rotation of the rotating shaft is completely acted upon by the reaction force of the elastic member 74, realizing the operation independent of human power, and using the plum blossom key 94 on the end cover 91 to transmit the rotation to the contact system module, finally realizing the operation of closing the switch;
[0043] To switch the mechanism from the closed state to the open state, it is only necessary to rotate the crank 41 in the reverse direction. The principle is the same as that from the open state to the closed state, that is, Figure 6 to Figure 4 , only in the opposite direction.
[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An isolating switch operating mechanism, characterized in that: include: A crank, a driving rod, a rotating shaft, a connecting piece and an elastic component, wherein the driving rod is arranged at one side of the bottom end of the outer wall of the crank, the rotating shaft is located below the crank, and the rotating shaft and the elastic component are connected via a connecting piece; The rotating shaft is composed of a first rotating base plate, a second rotating base plate, a third rotating base plate, a first connecting column, a first lever and a second lever. The first rotating base plate, the second rotating base plate and the third rotating base plate are arranged in parallel and on the same axis. The first connecting column is arranged between the first rotating base plate and the second rotating base plate along the axis direction of the first rotating base plate. The first lever and the second lever are mirror-imaged between the second rotating base plate and the third rotating base plate. The top end of the connecting member is rotatably connected to the first connecting column.
2. The isolating switch operating mechanism according to claim 1, characterized in that: The elastic component includes: two sliders, a connecting plate, a second connecting column and two elastic members. The two sliders are symmetrically arranged below the rotating shaft and are linked by the connecting plate. The second connecting column is arranged on the connecting plate, and the second connecting column is parallel to the first connecting column. The second connecting column is rotatably connected to the bottom end of the connecting member. The two elastic members are arranged on the bottom surfaces of the two sliders.
3. The isolating switch operating mechanism according to claim 1, characterized in that: The rotation range of the driving rod is located between the second rotating base plate and the third rotating base plate.
4. The isolating switch operating mechanism according to claim 1, characterized in that: The outer end surfaces of the first rotating base plate and the third rotating base plate are respectively provided with limiting grooves, the outer end surfaces of the first rotating base plate and the third rotating base plate are respectively abutted with end covers, and the inner end surfaces of the end covers are provided with rotating blocks matching the limiting grooves.
5. The isolating switch operating mechanism according to claim 4, characterized in that: The crank can rotate at an angle between 0° and 90°, and the rotating shaft can rotate at an angle between 0° and 240°.
6. The isolating switch operating mechanism according to claim 5, characterized in that: The outer end surface of the end cover is provided with a plum key.
7. The isolating switch operating mechanism according to claim 2, characterized in that: The two slide blocks are in an inverted bowl-shaped structure, the two elastic members are springs, and the tops of the springs are located in the inner cavity of the slide block.