Rotary isolating switch

Abstract

The utility model discloses a rotary disconnecting switch which comprises N switch unit layers, the switch unit layers are stacked in sequence, and N is larger than or equal to 2 and smaller than or equal to 4. Each switch unit layer comprises a shell, a rotating contact and two static contacts, the rotating contact and the two static contacts are arranged in the shell, the rotating contact rotates around a rotating axis, the two static contacts are arranged on the two sides of the rotating contact respectively, and along with rotation of the rotating contact, the rotating contact is in contact with or separated from the two static contacts at the same time; each static contact is of a flat plate structure, each static contact comprises a contact part and a wiring part, and the contact part and the wiring part of the same static contact are perpendicular to the rotating axis; the projections of the wiring parts of the static contacts on a first imaginary plane are mutually staggered, and the first imaginary plane is a plane perpendicular to the rotation axis; the processing method has the characteristic of convenience in processing.

Description

Technical Field

[0001] The present application relates to the electrical field, and more particularly to a rotary isolating switch. Background Art

[0002] Rotary isolating switches are widely used in inverters and have become a hot product in recent years.

[0003] The existing rotary isolating switch structure includes at least two switch unit layers, each of which includes a rotating contact and two stationary contacts, and the rotating contact has a moving contact. The rotating contact rotates so that the moving contact is connected to the two stationary contacts at the same time, thereby making the load circuit connected to the switch unit layer open; conversely, the rotating contact rotates so that the moving contact is separated from the two stationary contacts on the same layer, thereby disconnecting the load circuit connected to the switch unit layer. The stationary contact of the existing rotary isolating switch includes a contact portion and a wiring portion, and the contact portion and the wiring portion form an angle β (obtuse angle) in the axial direction relative to the common rotation axis, that is, the stationary contact needs to form a bending structure with an angle β, which greatly increases the difficulty of production.

[0004] Therefore, how to design the static contact structure more reasonably to reduce the difficulty of production is undoubtedly an issue that needs to be solved urgently. Summary of the invention

[0005] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide a rotary isolating switch with the feature of convenient wiring.

[0006] The present application provides: a rotary isolating switch, which includes N layers of switch unit layers, each of which is stacked in sequence, and the 2≤N≤4; each layer of the switch unit layer includes a shell and a rotating contact and two stationary contacts arranged in the shell, the rotating contact is rotatably arranged around a rotation axis, and the two stationary contacts are arranged on both sides of the rotating contact, and as the rotating contact rotates, the rotating contact is simultaneously in contact with and separated from the two stationary contacts; all the stationary contacts are flat plate structures, and all the stationary contacts include a contact portion and a wiring portion, and the contact portion and wiring portion of the same stationary contact are both perpendicular to the rotation axis; the projections of the wiring portions of each stationary contact on the first imaginary plane are staggered with each other, and the first imaginary plane is a plane perpendicular to the rotation axis.

[0007] The use of a flat-plate static contact reduces the bending process compared to the prior art, greatly simplifies the processing steps, and enables the static contact to be directly punched from a plate. The projections of the connection parts of each static contact on the first imaginary plane are staggered, which ensures that each connection part can be connected smoothly without blocking each other.

[0008] In some embodiments of the present application, an operating unit layer is also included, which includes an outer shell; all shells are stacked in sequence along the height direction, and the outer shell is arranged above the shell of the topmost switch unit layer; a wiring socket is arranged on the shell of each switch unit layer, and the wiring socket is used to place the wiring part of each switch unit layer; the wiring socket of the topmost switch unit layer is arranged beyond one side of the outer shell; the wiring sockets of the remaining switch unit layers except the topmost layer are arranged in such a way that the wiring sockets of the next switch unit layer are arranged beyond one side of the shell of the previous switch unit layer.

[0009] With this structure, the design of the wiring seat will be conducive to the placement of the wiring part. At the same time, this arrangement of exceeding the outer shell, housing, etc. will also make wiring more convenient, and the wiring part of each layer can also be distinguished by this exceeding form.

[0010] In some embodiments of the present application, each wiring seat is formed in a step-like shape.

[0011] This step form can make wiring more convenient and the overall shape looks more coordinated.

[0012] In some embodiments of the present application, a protective cover is provided on the housing, the protective cover is located above the wiring socket of the uppermost switch unit layer, and a wiring hole connected to the wiring socket is opened on the protective cover.

[0013] The provision of the protective cover can prevent the terminal block from being completely exposed, making the overall structure look more beautiful, and the protective cover can also play a certain protective effect.

[0014] In some embodiments of the present application, protective covers are provided on the shells of the switch unit layers except the bottommost layer. The protective covers are arranged in such a way that the protective cover of the upper switch unit layer is above the wiring socket of the lower switch unit layer, and the protective cover is provided with wiring holes connected to the corresponding wiring sockets.

[0015] The provision of the protective cover can prevent the terminal block from being completely exposed, making the overall structure look more beautiful, and the protective cover can also play a certain protective effect.

[0016] In some embodiments of the present application, an operating unit layer is also included, which includes an outer shell; all shells are stacked in sequence along the height direction, and the outer shell is arranged above the shell of the uppermost switch unit layer; all shells are provided with threading holes, and all wiring parts are located in the threading holes of their respective switch unit layers; a first wiring hole corresponding to the threading hole of the uppermost switch unit layer is provided on the upper surface of the outer shell, and a second wiring hole corresponding to the threading hole of the next switch unit layer is provided on the remaining shells; avoidance grooves are provided on the outer shell and the shells of the remaining switch unit layers except the lowermost layer, and the avoidance grooves correspond to and are connected to the second wiring holes.

[0017] With this structure, the design of the wiring holes and the threading holes makes the overall structure look more compact. At the same time, the design of the avoidance groove allows tools to enter the second wiring hole more conveniently, thereby improving the convenience of wiring.

[0018] In some embodiments of the present application, an operating unit layer is also included, which includes an outer shell; all shells are stacked in sequence along the height direction, and the outer shell is arranged above the shell of the uppermost switch unit layer; all shells are provided with threading holes, and the wiring parts are in the threading holes of each switch unit layer; wiring holes corresponding to the threading holes are provided on the upper surface of the outer shell, and the wiring holes corresponding to the threading holes of the uppermost switch unit layer are the first wiring holes, and the remaining wiring holes are the second wiring holes; the first wiring holes are directly connected to the threading holes of the uppermost switch unit layer; there are avoidance through holes on the shells of the remaining switch unit layers except the lowermost layer, and the second wiring holes are connected to the corresponding threading holes through the avoidance through holes.

[0019] With this structure, the overall structure looks more complete, and the design of avoiding the through hole allows the tool to pass through the second wiring hole to the corresponding wiring part to perform wiring, thereby improving the convenience of wiring.

[0020] In some embodiments of the present application, N is at least 3, and all shells are stacked in sequence along the height direction; wire holes are opened on all shells, and the wiring parts are in the wire holes of their respective switch unit layers; wiring holes are opened on the lower surface of the shell of the lowest switch unit layer, and the wiring holes and the wire holes are in a one-to-one correspondence; the wiring holes include two first wiring holes, and the rest are second wiring holes; the wire holes of the lowest switch unit layer and its adjacent switch unit layer are respectively connected with the two first wiring holes, and avoidance through holes are opened on the remaining switch unit layers except the lowest and uppermost layers, and the second wiring holes are connected with the corresponding wire holes through the avoidance through holes.

[0021] With this structure, the overall structure looks complete, and the design of avoiding the through hole allows the tool to pass through the second wiring hole to the corresponding wiring part for wiring, thereby improving the convenience of wiring.

[0022] In some embodiments of the present application, all wiring parts are exposed outside their corresponding shells, and a separator is provided on the shell. The separator and the shell are integral or detachable, and the separator is used to separate two adjacent wiring parts.

[0023] In some embodiments of the present application, the angle between the projections of the contact portion and the wiring portion of the same static contact on the first imaginary plane is A, and A is not less than 90°.

[0024] The use of this structure and the design with the included angle A will be more conducive to forming a staggered design between the wiring parts.

[0025] In some embodiments of the present application, the stationary contacts in each switch unit layer are respectively first stationary contacts and second stationary contacts, and the projections of the contact portions of all first stationary contacts on the first imaginary plane are completely overlapped or partially overlapped, and the projections of the contact portions of all second stationary contacts on the first imaginary plane are completely overlapped or partially overlapped.

[0026] By adopting this structure and utilizing the contact portions to completely overlap or partially overlap, it will be more conducive to forming a staggered design between the wiring portions.

[0027] In some embodiments of the present application, a first hole is opened on the wiring part, and a wiring screw and a nut are correspondingly provided on each wiring part, and the wiring screw passes through the first hole and cooperates with the nut.

[0028] With this structure, the wiring of the wiring part can be achieved using wiring screws and nuts.

[0029] In some embodiments of the present application, a pulling protrusion is provided on the wiring part, and a first hole is provided on the wiring part and the pulling protrusion. The first hole is a threaded hole, and a wiring screw is correspondingly provided on each wiring part, and the wiring screw cooperates with the first hole.

[0030] With this structure, the wiring of the wiring part can be achieved by using the wiring screw and the first hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A perspective view of a first embodiment of a rotary disconnect switch according to an embodiment of the present application is shown;

[0033] Figure 2 A schematic diagram showing a rotating disk, a rotating contact and a stationary contact in a rotary disconnector according to an embodiment of the present application is shown;

[0034] Figure 3 The projection diagram of all the stationary contacts in the rotary disconnector according to the embodiment of the present application on the first imaginary plane is shown;

[0035] Figure 4 A three-dimensional view of an upper cover in a first embodiment of a rotary isolating switch according to an embodiment of the present application is shown;

[0036] Figure 5 A three-dimensional view of a first-layer switch unit housing in a first implementation manner of a rotary disconnect switch according to an embodiment of the present application is shown;

[0037] Figure 6 A three-dimensional view of a second switch unit layer housing in a first embodiment of a rotary disconnect switch according to an embodiment of the present application is shown;

[0038] Figure 7 A three-dimensional view of a third switch unit layer housing in a first embodiment of a rotary disconnect switch according to an embodiment of the present application is shown;

[0039] Figure 8 A perspective view of a second embodiment of the rotary isolating switch according to the present application is shown;

[0040] Fig. 9 A perspective view of a third embodiment of the rotary isolating switch according to the present application is shown;

[0041] Fig.10 A perspective view of a fourth embodiment of a rotary isolating switch according to an embodiment of the present application is shown;

[0042] Fig.11 A perspective view of a fifth implementation of the rotary isolating switch according to an embodiment of the present application is shown;

[0043] Fig.12 A cross-sectional view of a fifth embodiment of the rotary isolating switch according to an embodiment of the present application is shown;

[0044] Fig.13 A perspective view of a sixth implementation of the rotary disconnector according to an embodiment of the present application is shown;

[0045] Fig.14 A cross-sectional view of a sixth implementation of the rotary disconnector according to an embodiment of the present application is shown;

[0046] Fig.15 A schematic diagram showing the static contacts of the first switch unit layer in the first implementation mode of the rotary disconnector according to the embodiment of the present application is shown;

[0047] Fig.16 A schematic diagram showing the static contacts of the second switch unit layer in the first implementation mode of the rotary disconnector according to the embodiment of the present application is shown;

[0048] Fig.17 A schematic diagram showing the static contacts of the third switch unit layer in the first implementation mode of the rotary disconnector according to the embodiment of the present application is shown;

[0049] Fig.18A schematic diagram showing all the stationary contacts in the first embodiment of the rotary disconnector according to the present application as viewed in the axial direction of the rotation axis O is shown. DETAILED DESCRIPTION

[0050] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0051] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more poles of the feature. In the description of this application, "multi-pole" means two or more poles, unless otherwise clearly and specifically defined.

[0053] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "electrically connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed electrical connection, a detachable electrical connection, or an integrated one; it can be a mechanical electrical connection, or an electrical electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of the two-pole element or the interaction relationship between the two-pole elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. Example

[0055] like Figure 1-18 As shown, a rotary isolating switch comprises an operating unit layer 100 and a switch unit layer 200.

[0056] Here, the operating unit layer 100 includes a housing 110 and an operating mechanism disposed in the housing 110 .

[0057] The switch unit layer 200 includes a housing 210, a rotating shaft 201, a rotating contact 202 and two stationary contacts 203 arranged on the housing 210. Here, the rotating contact 202 is arranged on the rotating shaft 201, and the two stationary contacts 203 are arranged on both sides of the rotating contact 202. Since the rotating shaft 201 and the operating mechanism are arranged in linkage, as the user drives the operating mechanism, the rotating shaft 201 can be rotated, so that the moving contact and the two stationary contacts 203 in the same switch unit layer 200 can be in contact or separated at the same time, thereby realizing the connection and disconnection of this rotary isolating switch.

[0058] Here, buckles and ultrasonic welding are used between the housings 210 and between the housing 210 of the top switch unit layer 200 and the housing 110 to form a stable whole. Of course, in addition to the buckle and ultrasonic welding fixation methods, it is also possible to use buckles alone or ultrasonic welding alone, or even to fix by passing bolts through and then tightening.

[0059] Here, there are three switch unit layers 200, which are stacked in sequence along the height direction, and the operating unit layer 100 is located above the topmost switch unit layer 200. Of course, in addition to this, a single switch unit layer 200 or a double switch unit layer 200 may also be used.

[0060] Here, if Figure 2, 3, 15-18, all the stationary contacts 203 include a contact portion 204 and a wiring portion 205, and each stationary contact 203 is a flat plate structure, that is, the contact portion 204 and the wiring portion 205 are flat, that is, the contact portion 204, the wiring portion 205 and the rotation axis O are perpendicular, and the contact portion 204 and the wiring portion 205 are arranged at a right angle. The projections (first projection S100) of all the wiring portions 205 on the first imaginary plane S1 are staggered from each other. The first imaginary plane S1 here is an imaginary plane, not a real plane. This plane is specifically a plane perpendicular to the rotation axis O of the rotating contact 202.

[0061] Here, the following two situations are classified according to whether the wiring portion 205 is disposed in the housing 210 of the corresponding switch unit layer 200 .

[0062] Case 1: Figure 8 As shown, all the wiring parts 205 here are beyond their corresponding housings 210 and exposed outside the housing 210. The housing 210 is integrally formed with a separator 211. In this embodiment, there are two separators 211, which are located between two adjacent wiring parts 205 to separate the two wiring parts 205. Of course, in addition to the integrated method, the separator 211 can also be detachably matched, for example, the separator 211 is fixed to the housing 210 by plugging or snapping.

[0063] In the second scenario, the wiring portion 205 is still located inside the corresponding housing 210 , which includes a variety of implementation methods. Several preferred implementation methods are given below as examples.

[0064] like Fig. 9 As shown in FIG. 2 , as an implementation of the second scenario, in this manner, each housing 210 is provided with a wiring seat 212, and the number of the wiring seat 212 is two, respectively corresponding to the two wiring portions 205. Moreover, the two wiring seats 212 of the uppermost switch unit layer 200 are arranged beyond the two side surfaces of the housing 110, and the wiring seats 212 of the remaining switch unit layers 200 except the uppermost switch unit layer 200 are arranged in such a manner that the wiring seats 212 of the lower switch unit layer 200 are arranged beyond the housing 210 of the upper switch unit layer 200.

[0065] Taking the three-layer switch unit layer 200 as an example, from top to bottom, they are respectively the first switch unit layer 200, the second switch unit layer 200, and the third switch unit layer 200, and the first switch unit layer 200 is the top switch unit layer 200. The two wiring sockets 212 of the first switch unit layer 200 are arranged beyond the housing 110. The two wiring sockets 212 of the second switch unit layer 200 are arranged beyond the housing 210 of the first switch unit layer 200. The two wiring sockets 212 of the third switch unit layer 200 are arranged beyond the housing 210 of the second switch unit layer 200.

[0066] Here, the connection base 212 on the same side of the three-layer switch unit layer 200 is formed in a stepped shape, that is, a structure that is gradually lowered and staggered from top to bottom. Of course, in addition to the stepped shape, a structure other than the stepped shape can also be used.

[0067] like Figure 1 , Figure 4-6 , as shown, as a variant embodiment of the second embodiment, this structural embodiment further adds a protective cover 213 on the basis of the structure of the wiring seat 212. That is to say, the housing 110 is provided with a protective cover 213, the protective cover 213 is located above the wiring seat 212 of the uppermost switch unit layer 200, and the protective cover 213 is provided with a wiring hole 214 connected to the wiring seat 212. The housing 210 of the remaining switch unit layers 200 except the lowermost switch unit layer 200 is provided with a protective cover 213, and the protective cover 213 is arranged in such a way that the protective cover 213 of the upper switch unit layer 200 is located above the wiring seat 212 of the lower switch unit layer 200, and the protective cover 213 is provided with a wiring hole 214 connected to the corresponding wiring seat 212.

[0068] Taking the three-layer switch unit layer 200 as an example, a protective cover 213 is provided on the side of the housing 110, and the protective cover 213 is located above the wiring socket 212 of the first layer of the switch unit layer 200. The protective cover 213 is provided with a wiring hole 214 connected to the wiring socket 212. The protective covers 213 are also provided on the side of the housing 210 of the first layer of the switch unit layer 200 and the second layer of the switch unit layer 200. The protective cover 213 on the housing 210 of the first layer of the switch unit layer 200 is located above the wiring socket 212 of the second layer of the switch unit layer 200, and the protective cover 213 on the housing 210 of the second layer of the switch unit layer 200 is located above the wiring socket 212 of the third layer of the switch unit layer 200, and the protective cover 213 is provided with a wiring hole 214 connected to the corresponding wiring socket 212.

[0069] like Fig.10As shown, as another embodiment of the second situation, in this way, both sides of all housings 210 are provided with threading holes 215, and the threading holes 215 correspond to the wiring parts 205 one by one, and all wiring parts 205 are in their respective threading holes 215. The upper surface of the housing 110 is provided with a first wiring hole 214a corresponding to the threading hole 215 of the uppermost switch unit layer 200, and the remaining housings 210 are provided with a second wiring hole 214b corresponding to the threading hole 215 of the next switch unit layer 200. The housing 110 and the housings 210 of the remaining switch unit layers 200 except the lowermost switch unit layer 200 are provided with an avoidance groove 216, and the avoidance groove 216 corresponds to and communicates with the second wiring hole 214b.

[0070] Taking the three-layer switch unit layer 200 as an example, a first wiring hole 214a and two avoidance grooves 216 (respectively, the first avoidance groove 216a and the second avoidance groove 216b) are provided on the upper surface of the housing 110. The first wiring hole 214a is connected to the threading hole 215 of the first layer of the switch unit layer 200. A second wiring hole 214b and two avoidance grooves 216 (respectively, the first avoidance groove 216a and the second avoidance groove 216b) are provided on the housing 210 of the first layer of the switch unit layer 200, and the second wiring hole 214b of the first layer of the switch unit layer 200 is connected to the threading hole 215 of the second layer of the switch unit layer 200. The housing 210 of the second switch unit layer 200 is provided with a second wiring hole 214b and two avoidance grooves 216 (also the first avoidance groove 216a and the second avoidance groove 216b respectively). The second wiring hole 214b of the second switch unit layer 200 is connected to the threading hole 215 of the third switch unit layer 200. Due to the design of the first avoidance groove 216a of the housing 110 and the first avoidance groove 216a of the first switch unit layer 200, the user can connect the second switch unit layer 200. Due to the design of the second avoidance groove 216b of the housing 110, the first switch unit layer 200, and the second avoidance groove 216b of the second switch unit layer 200, the user can connect the third switch unit layer 200.

[0071] like Fig.11As shown, as another embodiment of the second situation, in this way, both sides of all housings 210 are also provided with threading holes 215, and the threading holes 215 correspond to the wiring parts 205 one by one, and all wiring parts 205 are in their respective threading holes 215. The upper surface of the housing 110 is provided with wiring holes 214 corresponding to the threading holes 215 one by one, and the wiring holes 214 corresponding to the threading holes 215 of the uppermost switch unit layer 200 are first wiring holes 214a, and the remaining wiring holes 214 are second wiring holes 214b. The first wiring hole 214a is directly connected to the threading holes 215 of the uppermost switch unit layer 200. The housings 210 of the remaining switch unit layers 200 except the lowermost switch unit layer 200 are provided with avoidance through holes 217, and the second wiring holes 214b are connected to the corresponding threading holes 215 through the avoidance through holes 217.

[0072] Still taking the three-layer switch unit layer 200 as an example, a first wiring hole 214a and two second wiring holes 214b are provided on the upper surface of the housing 110. The first wiring hole 214a is connected to the threading hole 215 of the first layer of the switch unit layer 200. Two avoidance through holes 217 (also the first avoidance through hole 217a and the second avoidance through hole 217b) are provided on the housing 210 of the first layer of the switch unit layer 200, and one of the second wiring holes 214b is connected to the threading hole 215 of the second layer of the switch unit layer 200 through the first avoidance through hole 217a. One avoidance through hole 217, that is, the second avoidance through hole 217b, is provided on the housing 210 of the second layer of the switch unit layer 200, and the other second wiring hole 214b is connected to the threading hole 215 of the third layer of the switch unit layer 200 through the first layer of the switch unit layer 200 and the second avoidance through hole 217b of the second layer of the switch unit layer 200.

[0073] like Fig.12 As shown, as another embodiment of the second situation, in this way, both sides of all the housings 210 are also provided with threading holes 215, and the threading holes 215 correspond to the wiring parts 205 one by one, and all the wiring parts 205 are in their respective threading holes 215. The lower surface of the housing 210 of the bottom switch unit layer 200 is provided with wiring holes 214, and the wiring holes 214 correspond to the threading holes 215 one by one. The wiring holes 214 include two first wiring holes 214a, and the rest are second wiring holes 214b. The threading holes 215 of the bottom switch unit layer 200 and its adjacent layers are respectively connected with the two first wiring holes 214a, and the remaining switch unit layers 200 except the bottom and top layers are provided with avoidance through holes 217, and the second wiring holes 214b are connected with the corresponding threading holes 215 through the avoidance through holes 217.

[0074] Taking the three-layer switch unit layer 200 as an example again, the lower surface of the housing 210 of the third layer switch unit layer 200 is provided with a wiring hole 214, where the wiring hole 214 is two first wiring holes 214a and one second wiring hole 214b. The first wiring hole 214a is respectively connected with the threading hole 215 of the third layer switch unit layer 200 and the threading hole 215 of the second layer switch unit layer 200. The second layer switch unit is provided with an avoidance through hole 217, and the second wiring hole 214b is connected with the threading hole 215 of the first layer switch unit layer 200 through the avoidance through hole 217.

[0075] Regardless of the above-mentioned implementation form, the angle between the projections of the contact portion 204 and the wiring portion 205 of the same static contact 203 on the first imaginary plane S1 is A, and A is not less than 90°. Although the projection angle is mentioned here, since the static contact 203 is a flat plate structure, the angle A of the two projections is actually the angle A between the contact portion 204 and the wiring portion 205 in the plane direction where the switch unit layer 200 is located. Let's take the three-layer switch unit layer 200 as an example. The static contact 203 of the first layer of the switch unit layer 200 is roughly L-shaped, that is, the angle A between the contact portion 204 and the wiring portion 205 is 90°, and of course the angle A between the projections of the two on the first imaginary plane S1 is also 90°. The static contact 203 of the second layer of the switch unit layer 200 is roughly straight, that is, the angle A between the contact portion 204 and the wiring portion 205 is 180°, and of course the angle A between the projections of the two on the first imaginary plane S1 is also 180°. The static contact 203 of the third switch unit layer 200 is roughly L-shaped, which is exactly opposite to the static contact 203 of the first switch unit layer 200. Of course, the angle A between the contact portion 204 and the wiring portion 205 is also 90°, and the angle A between their projections on the first imaginary plane S1 is also 90°.

[0076] In the above-mentioned methods, if the two stationary contacts 203 of the same switch unit layer 200 are divided into a first stationary contact 203a and a second stationary contact 203b, the projections (second projections S200) of the contact portions 204 of all the first stationary contacts 203a on the first imaginary plane S1 are completely overlapped, and the projections of the contact portions 204 of all the second stationary contacts 203b on the first imaginary plane S1 are also completely overlapped. Of course, in addition to this, a partial overlap method can also be adopted.

[0077] In the above-mentioned embodiments, the wiring part 205 is fixed to the wire by the wiring screw 220 and the nut 230. Here, the wiring part 205 is provided with a first hole, which is a through hole, and the wiring is achieved by inserting the wiring screw 220 into the first hole and fixing it with the nut 230. Of course, in addition to the nut 230, a drawing protrusion can also be provided on the wiring part 205, and the drawing protrusion and the wiring part 205 are provided with threaded holes, and the wiring screw 220 directly cooperates with the threaded hole.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0079] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A rotary isolating switch, characterized in that: It comprises N switch unit layers, each of which is stacked in sequence, 2≤N≤4; each switch unit layer comprises a shell and a rotating contact and two stationary contacts arranged in the shell, the rotating contact is arranged to rotate around a rotation axis, the two stationary contacts are arranged on both sides of the rotating contact, and as the rotating contact rotates, the rotating contact is contacted and separated from the two stationary contacts at the same time; all the stationary contacts are flat plate structures, all the stationary contacts comprise a contact portion and a wiring portion, the contact portion and the wiring portion of the same stationary contact are arranged perpendicular to the rotation axis; the projections of the wiring portions of the stationary contacts on the first imaginary plane are staggered with each other, and the first imaginary plane is a plane perpendicular to the rotation axis.

2. A rotary isolating switch according to claim 1, characterized in that: It also includes an operating unit layer, which includes an outer shell; all shells are stacked in sequence along the height direction, and the outer shell is arranged above the shell of the top switch unit layer; a wiring socket is arranged on the shell of each switch unit layer, and the wiring socket is used to place the wiring part of each switch unit layer; the wiring socket of the top switch unit layer is arranged beyond one side of the outer shell; the wiring sockets of the remaining switch unit layers except the top layer are arranged in such a way that the wiring sockets of the next switch unit layer are arranged beyond one side of the shell of the previous switch unit layer.

3. A rotary isolating switch according to claim 2, characterized in that: The shape of each wiring seat is stepped.

4. A rotary isolating switch according to claim 2 or 3, characterized in that: The housing is provided with a protective cover, which is located above the wiring socket of the uppermost switch unit layer, and the protective cover is provided with a wiring hole connected with the wiring socket; And / or, protective covers are provided on the shells of the switch unit layers except the bottom layer, and the protective covers are arranged in such a way that the protective cover of the upper switch unit layer is above the wiring socket of the lower switch unit layer, and the protective cover is provided with wiring holes connected to the corresponding wiring sockets.

5. A rotary isolating switch according to claim 1, characterized in that: It also includes an operating unit layer, which includes an outer shell; all shells are stacked in sequence along the height direction, and the outer shell is arranged above the shell of the uppermost switch unit layer; all shells are provided with threading holes, and all wiring parts are located in the threading holes of their respective switch unit layers; a first wiring hole corresponding to the threading hole of the uppermost switch unit layer is provided on the upper surface of the outer shell, and a second wiring hole corresponding to the threading hole of the next switch unit layer is provided on the remaining shells; avoidance grooves are provided on the outer shell and the shells of the remaining switch unit layers except the lowermost layer, and the avoidance grooves correspond to and are connected with the second wiring holes.

6. A rotary isolating switch according to claim 1, characterized in that: It also includes an operating unit layer, which includes an outer shell; all shells are stacked in sequence along the height direction, and the outer shell is arranged above the shell of the uppermost switch unit layer; all shells are provided with threading holes, and the wiring parts are located in the threading holes of each switch unit layer; wiring holes corresponding to the threading holes are provided on the upper surface of the outer shell, the wiring holes corresponding to the threading holes of the uppermost switch unit layer are the first wiring holes, and the remaining wiring holes are the second wiring holes; the first wiring holes are directly connected to the threading holes of the uppermost switch unit layer; there are avoidance through holes on the shells of the remaining switch unit layers except the lowermost layer, and the second wiring holes are connected to the corresponding threading holes through the avoidance through holes.

7. A rotary isolating switch according to claim 1, characterized in that: N is at least 3, and all shells are stacked in sequence along the height direction; all shells are provided with threading holes, and the wiring parts are located in the threading holes of their respective switch unit layers; wiring holes are provided on the lower surface of the shell of the lowest switch unit layer, and the wiring holes and the threading holes are in a one-to-one correspondence; the wiring holes include two first wiring holes, and the rest are second wiring holes; the threading holes of the lowest switch unit layer and its adjacent switch unit layers are respectively connected with the two first wiring holes, and avoidance through holes are provided on the remaining switch unit layers except the lowest and uppermost layers, and the second wiring holes are connected with the corresponding threading holes through the avoidance through holes.

8. A rotary isolating switch according to claim 1, characterized in that: All the wiring parts are exposed outside the corresponding shells. A separator is arranged on the shell. The separator and the shell are integrated or detachably matched. The separator is used to separate two adjacent wiring parts.

9. A rotary isolating switch according to claim 1, characterized in that: The angle between the projections of the contact portion and the wiring portion of the same static contact on the first imaginary plane is A, and A is not less than 90°; and / or, the static contacts in each switch unit layer are respectively the first static contacts and the second static contacts, and the projections of the contact portions of all the first static contacts on the first imaginary plane are completely overlapped or partially overlapped, and the projections of the contact portions of all the second static contacts on the first imaginary plane are completely overlapped or partially overlapped.

10. A rotary isolating switch according to claim 1, characterized in that: A first hole is provided on the wiring part, and a wiring screw and a nut are correspondingly provided on each wiring part, and the wiring screw passes through the first hole and cooperates with the nut; Or, a pulling protrusion is provided on the wiring part, and a first hole is provided on the wiring part and the pulling protrusion, the first hole is a threaded hole, and a wiring screw is correspondingly provided on each wiring part, and the wiring screw cooperates with the first hole.

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