CN107026048A - Paralleling switch - Google Patents

Abstract

The invention relates to a parallel switch. This parallel switch includes a first isolating switch and a second isolating switch, the first isolating switch has a first drive module and at least one first contact module connected together side by side, and the second isolating switch has a first driving module and at least one first contact module connected together side by side A second drive module and at least one second contact module, the first drive module and the second drive module are connected side by side, a first transmission assembly is arranged inside the first drive module, and a second drive module is arranged inside the second drive module. The transmission assembly and the first transmission assembly and the second transmission assembly are synchronously linked with each other. A drive shaft is connected to the first drive module and can drive the first transmission assembly inside the first drive module to rotate, and then drive the inside of the second drive module. The second transmission assembly realizes synchronous rotation. According to the parallel switch of the present invention, the synchronization of the operation of two groups of isolating switches can be effectively improved.

Description

parallel switch

technical field

The invention relates to the field of electrical equipment, in particular to a parallel switch.

Background technique

An isolating switch is an electrical device commonly used in circuits. It is used to change circuit connections or isolate lines or equipment from power sources. Usually, it can change its on/off state by front or side operation. In order to adapt to different power systems, two isolating switches can be connected side by side to form a parallel switch to cut off or connect two power sources at the same time.

However, the parallel switches in the prior art have the following defects: First, the two isolating switches are driven by various driving parts, and the driving parts of the two isolating switches are synchronized through gears, racks and drive shafts. Linkage, due to the transmission gap, the effect of complete synchronization of the actions between the two isolating switches needs to be improved. Moreover, since the contact parts between the two isolating switches are not connected, when the dynamic and static contacts of one of the isolating switches are welded due to short circuit, the drive shaft can still rotate to the disconnected position, and the error indication of the drive shaft will affect the The entire power system has brought potential safety hazards.

Contents of the invention

The purpose of the present invention is to provide a parallel switch, which can effectively improve the synchronization of the operation of two sets of isolating switches. This parallel switch comprises a first isolating switch and a second isolating switch, the first isolating switch has a first drive module and at least one first contact module connected together side by side, the second isolating switch has a parallel A second drive module and at least one second contact module connected together, the first drive module and the second drive module are connected together side by side, and a first transmission assembly is arranged inside the first drive module, A second transmission assembly is arranged inside the second drive module, and the first transmission assembly and the second transmission assembly are synchronized with each other, and a drive shaft is connected to the first drive module and can drive the first transmission assembly. The first transmission assembly inside the drive module rotates, and then drives the second transmission assembly inside the second drive module to rotate synchronously, so that the parallel switch can be completely synchronously disconnected and connected.

According to one aspect of the parallel switch of the present invention, the driving force is synchronously transmitted between the first transmission component and the second transmission component through the cooperation of the key and the keyway.

According to another aspect of the parallel switch of the present invention, the first transmission assembly includes: a pair of elastic mounts with a predetermined interval; a cam plate that rotatably abuts between the pair of elastic mounts, and Both end surfaces are provided with a mounting groove; and the first fitting and the second fitting are respectively installed in the corresponding mounting grooves and rotated by the cam disc driven by the drive shaft , the first fitting and the second fitting are both provided with a keyway; wherein, the outer contour of the first fitting is fully adapted to the installation groove, so as to transmit the driving force synchronously, so There is a predetermined movable gap between the second matching part and the installation groove, so as to realize buffering and reduce harmful vibration.

According to still another aspect of the parallel switch of the present invention, the second transmission assembly includes: a pair of elastic mounts with a predetermined interval; a cam plate that rotatably abuts between the pair of elastic mounts, and Both end faces are provided with a mounting groove; and the first fitting and the second fitting are respectively installed in the corresponding mounting groove and can drive the cam disc to rotate, the first fitting and the second fitting A keyway is provided on each piece; wherein, the outer contour of the first fitting fits completely with the installation groove so as to transmit the driving force synchronously, and the connection between the second fitting and the installation groove There is a predetermined active gap between them to achieve cushioning and reduce harmful vibrations.

According to still another aspect of the parallel switch of the present invention, the first matching part in the first driving module is adjacent to the first matching part in the second driving module, and two of the matching parts are connected by a common key. The key grooves on the first fitting are fitted and connected with each other.

According to yet another aspect of the parallel switch of the present invention, the radial length of the key is equal to the sum of the radial depths of the key grooves on the two first matching parts, so as to enhance the reliability of the synchronous rotation of the two cam discs.

According to still another aspect of the parallel switch of the present invention, the key grooves are spline grooves, the keys are splines, and two adjacent key grooves are connected together by the same spline, so that the two transmission components The stability of inter-synchronous motion can be effectively enhanced.

According to yet another aspect of the parallel switch of the present invention, the drive shaft is provided with a contact block, and the cam plate of the first transmission assembly is provided with two bumps corresponding to different working states, through which the contact block The cam disc can be rotated under the driving action of the drive shaft by abutting against the protrusion, and the rotation axis of the cam disc is perpendicular to the axis of the drive shaft. Through the above design, it can be more Good realization of the driving effect of the drive shaft.

According to still another aspect of the parallel switch of the present invention, between the adjacent first driving modules and the first contact modules, between the adjacent first contact modules, between the adjacent second driving modules and the first contact modules, The two contact modules and the adjacent second contact modules are also connected through the key and the keyway to transmit the driving force, so as to further improve the operation synchronization of the opening and closing of the entire parallel switch.

According to yet another aspect of the parallel switch of the present invention, both the first fitting and the second fitting have a body and wings connected to both sides of the body, the keyway is located on the body, and the first The body and the two wings of a matching part completely fill up the installation groove, and there is a gap between the two wings of the second fitting part and the installation groove, so as to better cooperate with the rotation.

Description of drawings

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. in:

Fig. 1 is the structural representation of parallel switch of the present invention;

The exploded schematic view of the composition structure of the parallel switch of the present invention of Fig. 2;

Fig. 3 is a schematic structural diagram of the first driving module and the second driving module in Fig. 2;

Fig. 4 is a structural schematic view of the first driving module and the second driving module shown in Fig. 3 viewed from another angle;

Fig. 5 is a structural schematic diagram of the first transmission assembly and the second transmission assembly shown in Fig. 3; and

FIG. 6 is a schematic view of the side structure of the first transmission assembly shown in FIG. 5 viewed from another angle.

Label description

parallel switch 100

First isolating switch 200

Second isolating switch 300

First drive module 210

Second drive module 310

First Contact Module 220

Second contact module 320

First drive assembly 230

Second drive assembly 330

Resilient Mount 231, 331

Cam disc 232, 332

bumps 232a, 232b

Mounting slots 233, 333

First fitting 234, 334

Second fitting 235, 335

drive shaft 400

contact block 401

Keyway 500

key 600

detailed description

In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals represent the same parts.

In order to make the drawing concise, each drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked.

Herein, "upper", "lower", "front", "rear", "left", "right", etc. are only used to indicate the positional relationship between related parts, not to limit their absolute positions.

In this document, "first", "second" and so on are only used to distinguish each other, but not to indicate their importance, order and the like.

Herein, "parallel", "perpendicular" and the like are not strictly restricted in the sense of mathematics and/or geometry, but also include errors understandable by those skilled in the art and allowed in manufacturing or use.

FIG. 1 shows a parallel switch 100 according to an embodiment of the present invention. The parallel switch 100 includes at least two groups of isolation switches. Referring to FIG. 2 , as an exemplary embodiment, the parallel switch 100 of the present invention includes a first isolation switch 200 and an isolation switch 300 .

Specifically, the first isolating switch 200 has a first driving module 210 and at least one first contact module 220, and the first driving module 210 and the first contact module 220 are connected together side by side. Similarly, the isolating switch 300 also has a second driving module 310 and at least one second contact module 320 , and the second driving module 310 and the second contact module 320 are connected together side by side. The first driving module 210 of the first isolating switch 200 and the second driving module 310 of the second isolating switch 300 are connected side by side. As an exemplary embodiment, as shown in FIG. 2 , the first isolation switch 200 has one first driving module 210 and four first contact modules 220 . The second isolating switch 300 has a second driving module 310 and four second contact modules 320 . Those skilled in the art can understand that the number of the first contact module 220 and the number of the second contact module 320 can be rationally increased or decreased according to different application scenarios.

3-5, the inside of the first drive module 210 is provided with a first transmission assembly 230, the inside of the second drive module 310 is also provided with a second transmission assembly 330, the first transmission assembly 230 and the second transmission assembly 230 The transmission components 330 are synchronously linked with each other. It is worth noting that the first drive module 210 is also connected with a drive shaft 400, the drive shaft 400 is connected to the first transmission assembly 230 inside the first drive module 210 and can drive it to rotate, and then drive the second drive module 310 The second transmission assembly 330 achieves synchronous rotation. Referring to FIG. 3 and FIG. 4 , it can be seen that the driving shaft 400 is located on the front of the first driving module 210 .

In order to further improve the synchronization of the operation of the two sets of isolating switches, in particular, referring to FIG. The key and the keyway cooperate to transmit the driving force. FIG. 5 is a schematic structural diagram of the first transmission assembly 230 and the second transmission assembly 330 located inside the first drive module 210 and the second drive module 310 after removing their respective outer shells.

FIG. 6 is a schematic view of the side structure of the first transmission assembly 230 of the present application viewed from another angle. To be more specific with reference to FIG. 5 and FIG. 6 , the first transmission assembly 230 further includes: a pair of elastic mounts 231 , a cam plate 232 , a first fitting 234 and a second fitting 235 . There is a predetermined interval between the elastic mounts 231 for mounting the cam disc 232 and the drive shaft 400 . The cam plate 232 abuts between the pair of elastic mounts 231 , and two end surfaces of the cam plate 232 are provided with a mounting groove 233 , so that both end surfaces of the cam plate 232 can transmit force. The first fitting part 234 and the second fitting part 235 are respectively rotatably installed in the corresponding mounting slots 233 and can be rotated by the cam plate 232 driven by the drive shaft 400 . A keyway 500 is provided in the middle of the first matching part 234 , and a keyway 500 is also provided in the middle of the second matching part 235 . In particular, the outer contour of the first matching part 234 is completely adapted to the installation groove 233 , and there is a predetermined movable gap between the second matching part 235 and the installation groove 233 .

At the same time, the second transmission assembly 330 also includes: a pair of elastic mounts 331 , a cam plate 332 , and a first matching part 334 and a second matching part 335 . There is a predetermined interval between the elastic mounts 331 for mounting the cam disc 332 . The cam plate 332 abuts between the pair of elastic mounts 331 , and two end surfaces of the cam plate 332 are provided with a mounting groove 333 , so that both end surfaces of the cam plate 332 can transmit force. The first fitting part 334 and the second fitting part 335 are respectively rotatably installed in the corresponding mounting slots 333 and can drive the cam plate 332 to rotate. A keyway 500 is provided in the middle of the first matching part 334 , and a keyway 500 is also provided in the middle of the second matching part 335 . In particular, the outer contour of the first matching part 334 is completely matched with the installation groove 333 , and there is a predetermined movable gap between the second matching part 335 and the installation groove 333 .

It should be understood that since the cooperation between the first fittings 234, 334 and the key 600 mainly plays a role in synchronous transmission of torque, in order to avoid delays in transmission time, the outer contours of the first fittings 234, 334 and the mounting grooves 233, 233, 333 is fully fitted to ensure that the cam plate 332 can move synchronously with the first fitting 334 , the key 600 , the first fitting 234 and the cam plate 232 . As shown in FIGS. 3-4 , the transmission sequence of the driving force is the drive shaft 400 , the cam plate 232 , the first matching member 234 , the key 600 , the first matching member 334 , and the cam plate 332 . It is worth pointing out that since the second fittings 235, 335 are mainly used to transmit the driving force to the adjacent contact modules 220, 320 respectively, there is a certain gap between the second fittings 235, 335 and the installation grooves 233, 333 , so that when a driving force is suddenly applied to the second matching part 235, 335, it can be pre-rotated at a small angle in the installation groove 233, 333, so as to achieve buffering and reduce harmful vibration.

As an optional implementation, each of the first fitting part 234, 334 and the second fitting part 235, 335 has a body and wings connected to two sides of the body. In order to ensure synchronous torque transmission between the two transmission components, the body of the first fitting 234 and the two wings completely fill the installation slot 233 . The body and the two wings of the first fitting part 334 completely fill up the installation groove 333 . There is a gap between the two wings of the second fitting part 335 and the installation groove 233 . There is a gap between the two wings of the second fitting part 335 and the installation groove 333 .

It is worth noting that when the first isolating switch and the second isolating switch are connected together side by side, the first fitting 234 in the first driving module 210 is adjacent to the first fitting 334 in the second driving module 310 , And the keyway 500 on the first matching part 234 and the keyway 500 on the first matching part 334 are connected together through a common key 600 . In order to enhance the reliability of the synchronous rotation of the two cam plates 232 , 332 , preferably, the radial length of the key 600 is equal to the sum of the radial depths of the two key grooves 500 .

As a preferred embodiment, the key groove 500 adopts a spline groove, the key 600 adopts a spline, and two adjacent key grooves 500 are connected together by the same spline. Since the spline connection has a high bearing capacity, high centering accuracy and good guiding performance, the stability and reliability of the synchronous movement between the first transmission assembly 230 and the second transmission assembly 330 are effectively enhanced.

In order to achieve better driving, it is worth pointing out that the drive shaft 400 is provided with a contact block 401, and the cam plate 232 of the first transmission assembly 230 is provided with two protrusions 232a, 232b corresponding to different working states. Through the cooperation and abutment between the contact block 401 and the protruding blocks 232a, 232b, the cam plate 232 can be driven by the driving shaft 400 to realize rotation. Preferably, as shown in FIG. 5 , the rotation axis of the cam disc 232 is perpendicular to the axis of the drive shaft 400 .

Preferably, in order to enable the parallel switches to be disconnected and connected completely synchronously, between the adjacent first drive modules 310 and the first contact modules 220 , the adjacent first contact modules 220 between the adjacent second drive modules 310 and the second contact modules 320, and between the adjacent second contact modules 320 are also connected by keys and keyways to transmit driving force synchronously. , to further improve the operation synchronization of the entire parallel switch.

In order to facilitate those skilled in the art to better understand the present application, the operation process of the parallel switch of the present application will be introduced in detail below. When the parallel switch 100 needs to be used, the user can push the contact block 401 to push one of the two protrusions 232a, 232b on the cam plate 232 by manipulating the drive shaft 400, thereby urging the cam plate 232 to overcome the torque from the elastic mount 231 Make a turn. At this time, the cam plate 232 can drive the first fitting 234 completely installed in the installation groove 233 to rotate synchronously, because the key 600 is connected to the keyway 500 on the first fitting 234 and the keyway 500 on the first fitting 334 at the same time, along with The rotation of the first matching part 234 can also synchronously drive the first matching part 334 to rotate. Since the first matching part 334 is completely installed in the installation groove 333 , the cam plate 332 where the first matching part 334 is located can also realize synchronous rotation. In this way, when the drive shaft 400 located on the first drive module 210 is operated, the first transmission assembly 230 located inside the first drive module 210 and the second transmission assembly 330 located inside the second drive module 310 can be sequentially and synchronously linked, A plurality of first contact modules 220 and second contact modules 320 connected together side by side are then driven.

To sum up, compared with the prior art where the two drive modules are individually driven by their respective drive shafts, the drive method according to the present application enables no time delay in the transmission of the drive force and can be disconnected or connected synchronously. Power on for better synchronization. In particular, when the dynamic and static contacts of a certain contact module are welded, the entire parallel switch cannot be switched to the off position, which avoids the wrong display of the drive shaft and ensures the reliability of the product operation. In addition, this application relies on the matching relationship between the key and the keyway to transmit torque to realize synchronous drive, which completely replaces the drive method of using multiple gears and racks and other components in the prior art, which not only makes the structure of the transmission simpler and the assembly process It is more convenient, and because the number of spare parts is saved, the cost of the product is lower, which greatly improves the competitiveness of the product.

In this article, "schematic" means "serving as an example, example or illustration", and any illustration or implementation described as "schematic" should not be interpreted as a more preferred or more advantageous Technical solutions.

It should be understood that although this specification is described according to various implementations, not each implementation only includes an independent technical solution. This description of the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions of the feasible implementation modes of the present invention, and they are not intended to limit the protection scope of the present invention. All changes should be included within the protection scope of the present invention.

Claims (10)

1. Parallel switch (100), comprising a first isolating switch (200) and a second isolating switch (300), said first isolating switch (200) having a first drive module (210) connected side by side and at least one first contact module (220), the second isolating switch (300) has a second drive module (310) and at least one second contact module (320) connected side by side, the first drive The module (210) and the second drive module (310) are connected side by side, a first transmission assembly (230) is arranged inside the first drive module (210), and a first transmission assembly (230) is arranged inside the second drive module (310). A second transmission assembly (330) is provided and the first transmission assembly (230) and the second transmission assembly (330) are synchronously linked with each other, and a drive shaft (400) is connected to the first drive module (210 ) and can drive the first transmission assembly (230) inside the first drive module (210) to rotate, and then drive the second transmission assembly (330) inside the second drive module (310) to realize synchronous rotation. 2. The parallel switch according to claim 1, wherein the driving force is synchronously transmitted between the first transmission assembly (230) and the second transmission assembly (330) through cooperation of a key and a keyway. 3. The parallel switch according to claim 2, wherein the first transmission assembly (230) comprises: a pair of elastic mounts (231) with a predetermined interval; The cam disc (232) is rotatably abutted between the pair of elastic mounting seats (231), and a mounting groove (233) is opened on both end surfaces of the cam disc (232); and The first fitting (234) and the second fitting (235) are respectively installed in the corresponding mounting grooves (233) and can be rotated by the cam disc (232), and the cam disc (232) Driven by the drive shaft (400), a keyway (500) is provided on the first fitting (234) and the second fitting (235); Wherein, the outer contour of the first fitting (234) is fully adapted to the installation groove (233), and there is a predetermined movable gap between the second fitting (235) and the installation groove (233) . 4. The parallel switch according to claim 3, wherein the second transmission assembly (330) comprises: a pair of elastic mounts (331) with a predetermined interval; The cam disc (332) is rotatably abutted between the pair of elastic mounting seats (331), and a mounting groove (333) is opened on both end surfaces of the cam disc (332); and The first fitting (334) and the second fitting (335) are respectively installed in the corresponding mounting grooves (333) and can drive the rotation of the cam disc (332), and the first fitting (334) A keyway (500) is provided on the second fitting (335); Wherein, the outer contour of the first fitting (334) is fully adapted to the installation groove (333), and there is a predetermined movable gap between the second fitting (335) and the installation groove (333) . 5. The parallel switch according to claim 4, wherein the first fitting (234) in the first driving module (210) is connected to the first fitting (334) in the second driving module (310) ) are adjacent to each other, and the key grooves (500) on the two first fitting parts (234, 334) are connected to each other through a common key (600). 6. The parallel switch according to claim 5, wherein the radial length of the key (600) is equal to the sum of the radial depths of the key grooves (500) on the two first fittings (234, 334) . 7. The parallel switch according to claim 6, wherein the keyway (500) is a spline groove, the key (600) is a spline, and the same splined together. 8. The parallel switch according to claim 3, wherein a contact block (401) is provided on the drive shaft (400), and a contact block (401) is provided on the cam disc (232) of the first transmission assembly (230). The two bumps (232a, 232b) corresponding to different working states, through the abutment between the contact block (401) and the bumps (232a, 232b), the cam plate (232) can The drive shaft (400) is driven to rotate, and the rotation axis of the cam disc (232) is perpendicular to the axis of the drive shaft (400). 9. The parallel switch according to claim 1, wherein, between the adjacent first drive modules (310) and the first contact modules (220), the adjacent first contact modules (220) ), between the adjacent second drive modules (310) and the second contact modules (320), and between the adjacent second contact modules (320) also through the key and keyway Mating connection for synchronous transfer of driving force. 10. The parallel switch according to claim 4, wherein each of the first fitting (234, 334) and the second fitting (235, 335) has a body, and wing-like wings connected to both sides of the body object, the keyway (500) is located on the body, the body and two wings of the first fitting (234, 334) completely fill the mounting groove (233, 333), the second fitting There is a gap between the two wings of the piece (235, 335) and the installation groove (233, 333).