CN213184095U - Load switch for inflating cabinet - Google Patents
Load switch for inflating cabinet Download PDFInfo
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- CN213184095U CN213184095U CN202021743949.8U CN202021743949U CN213184095U CN 213184095 U CN213184095 U CN 213184095U CN 202021743949 U CN202021743949 U CN 202021743949U CN 213184095 U CN213184095 U CN 213184095U
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Abstract
The application discloses aerify load switch for cabinet includes: a fixed mount; the upper cross beam is provided with a first conductive part and a first insulating part, the first insulating part is poured and wrapped outside the first conductive part, the three-phase static tool bit of the first conductive part is exposed out of the first insulating part, and the upper cross beam is fixed on the fixing frame through the first insulating part; the lower beam is provided with a second conductive part and a second insulating part, the second insulating part is poured and wrapped outside the second conductive part, the second insulating part is exposed out of the three-phase connecting part of the second conductive part, and the lower beam is fixed on the fixing frame through the second insulating part; the three-phase moving cutter head is rotationally connected with the three-phase connection part. Compared with the prior art, this application is direct to be fixed in on the mount first insulation portion and second insulation portion. Therefore, a metal beam structure is eliminated, and the insulation problem of the conductive piece and the metal beam is eliminated, so that the electrical safety performance is met, and the phase distance can be reduced, so that the size of the load switch can be reduced.
Description
Technical Field
The utility model relates to an electric power industry technical field, in particular to aerify load switch for cabinet.
Background
At present 10kV sulfur hexafluoride gas insulation aerifys used load switch of cabinet mainly includes metal crate, three-phase and moves tool bit and three-phase quiet tool bit, and wherein, the three-phase moves the tool bit and rotates to be connected in metal crate, and the three-phase moves the tool bit and has closing position, branch floodgate position and earthing position, and the three-phase moves the tool bit and the three-phase quiet tool bit sets up the structure to be in metal crate: the metal frame is provided with an upper metal beam and a lower metal beam, insulating beams are fixed on the upper metal beam and the lower metal beam, and the conductive pieces of the static tool bit and the movable tool bit are fixed on the insulating beams respectively, so that the conductive pieces and the metal frame can meet the sufficient insulating distance, therefore, the phase distance between three phases of the existing load switch is large and can reach 150mm, and the load switch is large in size.
In summary, how to reduce the size of the load switch while satisfying the electrical safety performance becomes a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a load switch for an air-filled cabinet, so as to reduce the size of the load switch while satisfying the electrical safety performance.
In order to achieve the above purpose, the utility model provides the following technical scheme:
a load switch for an inflatable cabinet, comprising:
a fixed mount;
the upper cross beam is provided with a first conductive part and a first insulating part, the first insulating part is poured and wrapped outside the first conductive part, a three-phase static tool bit of the first conductive part is exposed out of the first insulating part, and the upper cross beam is fixed on the fixing frame through the first insulating part;
the lower beam is provided with a second conductive part and a second insulating part, the second insulating part is poured and wrapped outside the second conductive part, the three-phase connecting part of the second conductive part is exposed out of the second insulating part, and the lower beam is fixed on the fixing frame through the second insulating part;
and the three-phase movable cutter head is rotatably connected to the three-phase connection part.
Preferably, in the above load switch for an air-filled cabinet, the phase distance between the three-phase static cutter heads is 105mm to 115 mm.
Preferably, in the above load switch for an inflatable cabinet, the fixing frame includes a first fixing plate and a second fixing plate which are arranged in parallel, and both ends of the upper beam and both ends of the lower beam are respectively fixed to the first fixing plate and the second fixing plate.
Preferably, in the load switch for the gas insulated switchgear, two ends of a grounding beam of the load switch are respectively fixed to the first fixing plate and the second fixing plate, the grounding beam is provided with a grounding bar, and the grounding bar is provided with a grounding contact;
when the three-phase moving cutter head rotates to be connected with the grounding contact, the three-phase moving cutter head is in a grounding position;
when the three-phase moving cutter head rotates to be connected with the three-phase static cutter head, the three-phase moving cutter head is in a switch-on position;
when the three-phase movable cutter head rotates to a position between the grounding contact and the three-phase static cutter head, the three-phase movable cutter head is in a brake separating position.
Preferably, in foretell aerify load switch for cabinet, still include the arc extinguishing subassembly, the arc extinguishing subassembly set up in the entablature, and be located on the rotation path of three-phase movable knife head, be close to the quiet tool bit of three-phase sets up, every the quiet tool bit of three-phase corresponds one the arc extinguishing subassembly.
Preferably, in the above load switch for an inflatable cabinet, the arc extinguishing assembly includes:
the arc extinguishing grid support is fixed on the upper cross beam;
and the arc extinguishing grid is arranged on the arc extinguishing grid support and used for cutting off electric arcs between the three-phase movable cutter head and the three-phase static cutter head.
Preferably, in the above load switch for an inflatable cabinet, the three-phase moving tool bit is driven to rotate by a driving assembly, and the driving assembly includes:
the two ends of the insulated driving shaft are rotatably connected to the fixed frame, and the insulated driving shaft is used for being connected with an external power component;
one end of the first connecting rod is circumferentially limited and fixed on the insulated driving shaft;
one end of the second connecting rod is rotatably connected with the other end of the first connecting rod;
the insulating sleeve is fixed on the three-phase movable cutter head in a sleeved mode, the other end of the second connecting rod is rotatably connected with the insulating sleeve, and the first connecting rod, the second connecting rod and the three-phase movable cutter head form a four-connecting-rod structure.
Preferably, in the above load switch for an inflatable cabinet, the number of the first connecting rod, the second connecting rod and the insulating sleeve is three, and each moving head of the three moving heads corresponds to one insulating sleeve, one first connecting rod and one second connecting rod.
Preferably, in the above load switch for an inflatable cabinet, the cross section of the insulated driving shaft is polygonal, and one end of the first connecting rod is provided with a polygonal hole matched with the insulated driving shaft.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a load switch for an inflatable cabinet, which comprises a fixed frame, an upper beam, a lower beam and a three-phase moving cutter head; the upper cross beam is fixed on the fixing frame and provided with a first conductive part and a first insulating part, the first insulating part is poured and wrapped outside the first conductive part, and the three-phase static cutter head of the first conductive part is exposed out of the first insulating part; the lower beam is fixed on the fixing frame and provided with a second conductive part and a second insulating part, the second insulating part is poured and wrapped outside the second conductive part, and the three-phase connecting part of the second conductive part is exposed out of the second insulating part; the three-phase moving tool bit is rotationally connected with the three-phase connection part.
Compared with the structure that a metal beam is fixed on a metal frame firstly, an insulating beam is fixed on the metal beam, and then a three-phase conductive component is arranged on the insulating beam, a first conductive part of an upper beam in the application is wrapped in a poured first insulating part, a second conductive part of a lower beam is wrapped in a poured second insulating part, namely the first conductive part is located inside the first insulating part, the second conductive part is located inside the second insulating part, and the first insulating part and the second insulating part are directly fixed on a fixing frame. Therefore, a metal beam structure is eliminated, and the insulation problem of the conductive piece and the metal beam is eliminated, so that the electrical safety performance is met, and the phase distance can be reduced, so that the size of the load switch can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of a load switch for an inflatable cabinet according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a load switch for an inflatable cabinet, provided by an embodiment of the present invention, with a first fixing plate removed;
fig. 3 is a schematic structural view of a load switch for an inflatable cabinet in a brake-off position according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a load switch for an air-filled cabinet in a grounding position according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a load switch for an inflatable cabinet in a switch-on position according to an embodiment of the present invention;
fig. 6 is a schematic view of an installation structure of a driving assembly of a load switch for an inflatable cabinet according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a driving assembly of a load switch for an inflatable cabinet according to an embodiment of the present invention;
fig. 8 is a schematic structural view of an upper beam of a load switch for an air-filled cabinet according to an embodiment of the present invention.
The three-phase electric arc extinguishing device comprises an upper cross beam 1, a three-phase static tool bit 11, a driving assembly 2, an insulating driving shaft 21, a first connecting rod 22, a polygonal hole 221, a second connecting rod 23, an insulating sleeve 24, a lower cross beam 3, a three-phase connecting part 31, a three-phase moving tool bit 4, a grounding bar 5, a grounding contact 6, a grounding cross beam 7, a second fixing plate 8, an arc extinguishing assembly 9, an arc extinguishing bar support 91, an arc extinguishing bar support 92 and a first fixing plate 10.
Detailed Description
The core of the utility model is to provide an aerify load switch for cabinet to when satisfying the electrical safety performance, reduce load switch's volume.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 8, an embodiment of the present invention provides a load switch for an inflatable cabinet, which includes a fixing frame, an upper beam 1, a lower beam 3 and a three-phase moving blade 4; the upper crossbeam 1 is fixed on the fixing frame, the upper crossbeam 1 is provided with a first conductive part and a first insulating part, the first insulating part is poured and wrapped outside the first conductive part, namely the first insulating part is integrally poured and molded into a crossbeam structure, the first conductive part is fixed in the first insulating part, a three-phase static cutter head of the first conductive part is exposed out of the first insulating part, and the upper crossbeam 1 is fixedly connected with the fixing frame through the first insulating part; the lower beam 3 is fixed on the fixing frame, the lower beam 3 is provided with a second conductive part and a second insulating part, the second insulating part is poured and wrapped outside the second conductive part, namely the second insulating part is integrally poured and molded into a beam structure, the second conductive part is fixed in the second insulating part, a three-phase connecting part 31 of the second conductive part is exposed out of the second insulating part, and the lower beam 3 is fixedly connected with the fixing frame through the second insulating part; the three-phase moving cutter head 4 is rotatably connected with the three-phase connecting part 31.
Compared with the structure that a metal beam is fixed on a metal frame, an insulating beam is fixed on the metal beam, and then a three-phase conductive component is arranged on the insulating beam in the prior art, a first conductive part of an upper beam 1 is wrapped in the insulating beam by a poured first insulating part, a second conductive part of a lower beam 3 is wrapped in the insulating beam by a poured second insulating part, namely the first conductive part is positioned in the first insulating part, the second conductive part is positioned in the second insulating part, and the fixing frame is directly fixed with the fixing frame through the first insulating part and the second insulating part. Therefore, the metal beam structure is eliminated, and the insulation problem between the conductive parts and the metal beam is eliminated, so that the insulation distances among the first conductive parts, the second conductive parts and the fixed frame, the three-phase static cutter heads 11 of the first conductive parts and the three-phase connecting parts 31 of the second conductive parts are increased due to the fact that the first conductive parts and the second conductive parts do not have the metal beam, the electrical safety performance is met, the phase distance can be reduced, and the size of the load switch can be reduced. In addition, the upper cross beam 1 and the lower cross beam 3 are integrally cast, so that the upper cross beam 1 and the lower cross beam 3 are good in consistency and convenient to install, the production efficiency is improved, and the production cost is reduced.
Further, in this embodiment, the phase distance of the three-phase static cutter head 11 is 105mm to 115mm, specifically 110mm, and compared with the existing phase distance of 150mm, the phase distance in this application is reduced, so that the dimension of the upper beam 1 of the load switch in the length direction can be reduced, and can be reduced by at least 80mm, thereby reducing the volume of the load switch.
In this embodiment, the fixing frame includes a first fixing plate 10 and a second fixing plate 8 which are arranged in parallel, and both ends of the upper cross beam 1 and both ends of the lower cross beam 3 are respectively fixed with the first fixing plate 10 and the second fixing plate 8. The first fixing plate 10 and the second fixing plate 8 are metal plates and may be triangular plates, and of course, three angular positions of the triangular plates are not necessarily sharp corners, and may be round edges or rectangular edges. The two ends of the upper cross beam 1 and the lower cross beam 3 and the first fixing plate 10 and the second fixing plate 8 can be fixed through bolts. The fixing frame is simple in structure and convenient to install.
Furthermore, two ends of a grounding beam 7 of the load switch are respectively fixed on a first fixing plate 10 and a second fixing plate 8, the grounding beam 7 is provided with a grounding bar 5, and the grounding bar 5 is provided with a grounding contact 6; specifically, the grounding bar 5 is provided with a through hole, the grounding beam 7 is provided with a threaded hole, the grounding contact 6 is provided with a through hole, a bolt sequentially penetrates through the through hole of the grounding contact 6 and the through hole of the grounding bar 5, and finally the bolt is fixed in the threaded hole of the grounding beam 7 in a threaded manner, so that the grounding contact 6, the grounding bar 5 and the grounding beam 7 are fixed, and the assembly is completed by using fewer parts.
As shown in fig. 4, when the three-phase moving blade 4 rotates to connect with the grounding contact 6, the three-phase moving blade 4 is in the grounding position;
as shown in fig. 5, when the three-phase moving bit 4 rotates to be connected with the three-phase static bit 11, the three-phase moving bit 4 is in a switching-on position;
as shown in fig. 6, when the three-phase moving bit 4 rotates to a position between the grounding contact 6 and the three-phase static bit 11, the three-phase moving bit 4 is in a switch-off position, and the three-phase moving bit 4 is not connected to the grounding contact 6 and the three-phase static bit 11.
Further, in this embodiment, aerify for the cabinet load switch still include arc extinguishing subassembly 9, arc extinguishing subassembly 9 sets up in entablature 1, and is located the rotation path of three-phase movable cutter head 4, is close to three-phase quiet tool bit 11 and sets up, and every three-phase quiet tool bit 11 corresponds an arc extinguishing subassembly 9.
During operation, when the three-phase moving cutter head 4 moves from the switching-on position to the switching-off position, the three-phase moving cutter head 4 passes through the arc extinguishing component 9, and the arc extinguishing component 9 can cut off the electric arc between the three-phase moving cutter head 4 and the three-phase static cutter head 11, so that thorough switching-off operation is realized, and the electric safety is ensured.
As an optimization, as shown in fig. 8, the arc extinguishing assembly 9 includes an arc chute bracket 91 and an arc chute 92; the arc chute support 91 is fixed on the upper cross beam 1, and can be fixed on the three-phase static cutter head 11 through bolts; the arc chute 92 is arranged on the arc chute supports 91, the arc chute 92 is of a sheet structure with grooves, the number of the arc chute 92 on each arc chute support 91 is multiple, the arc chute supports 91 are overlapped, a plurality of mounting clamping grooves used for embedding the arc chute 92 are formed in the arc chute supports 91, and when the three-phase moving knife head 4 passes through the grooves, the arc chute 92 can cut off electric arcs between the three-phase moving knife head 4 and the three-phase static knife head 11.
As shown in fig. 6 and 7, the three-phase moving blade 4 is driven to rotate by the driving assembly 2, and the driving assembly 2 comprises an insulated driving shaft 21, a first connecting rod 22, a second connecting rod 23 and an insulated sleeve 24; wherein, both ends of the insulated driving shaft 21 are rotatably connected to the fixing frame, specifically, both ends of the insulated driving shaft 21 are respectively rotatably connected to the first fixing plate 10 and the second fixing plate 8, the insulated driving shaft 21 is used for connecting with an external power component, and the insulated driving shaft 21 can rotate; one end of the first connecting rod 22 is circumferentially limited and fixed on the insulating driving shaft 21, namely, the first connecting rod 22 and the insulating driving shaft 21 are relatively circumferentially static, and the insulating driving shaft 21 drives the first connecting rod 22 to rotate around the axis of the insulating driving shaft 21; one end of the second connecting rod 23 is rotatably connected with the other end of the first connecting rod 22; the insulating sleeve 24 is fixed on the three-phase moving cutter head 4 in a sleeved mode, the other end of the second connecting rod 23 is rotatably connected with the insulating sleeve 24, and the first connecting rod 22, the second connecting rod 23 and the three-phase moving cutter head 4 form a four-connecting-rod structure.
The driving assembly 2 is in operation, as shown in fig. 4, at this moment, the three-phase moving blade 4 is in a horizontal position, namely, a grounding position, then, the first connecting rod 22 is driven by the insulating driving shaft 21 to rotate counterclockwise by a certain angle, the first connecting rod 22 drives the second connecting rod 23 to move, the second connecting rod 23 drives the insulating sleeve 24 fixed on the three-phase moving blade 4 to move, and then the three-phase moving blade 4 is driven to rotate counterclockwise to the brake-separating position shown in fig. 3, then, the insulating driving shaft 21 continues to rotate counterclockwise by a certain angle, the first connecting rod 22 continues to drive the second connecting rod 23 to move, the second connecting rod 23 drives the insulating sleeve 24 to move, and then the three-phase moving blade 4 is driven to continue to rotate counterclockwise to the brake-closing position. When moving from the on position to the off position and the ground position, the insulated drive shaft 21 rotates in the reverse direction.
In this embodiment, preferably, the number of the first connecting rod 22, the second connecting rod 23 and the insulating sleeve 24 is three, and each moving blade of the three-phase moving blade 4 corresponds to one insulating sleeve 24, one first connecting rod 22 and one second connecting rod 23. The insulating driving shaft 21 is simultaneously connected with three first connecting rods 22, and the insulating driving shaft 21 drives the three first connecting rods 22 to synchronously rotate so as to drive the three-phase movable cutter head 4 to synchronously rotate. The three-phase moving cutter head 4 is stably driven through the three first connecting rods 22, the three second connecting rods 23 and the three insulating sleeves 24.
Certainly, the number of the insulating sleeve 24 can also be one or two, if the number of the insulating sleeve is one, three moving blades are all fixed on one insulating sleeve 24, the number of the first connecting rod 22 and the second connecting rod 23 can be one, two or three, as long as the power of the insulating driving shaft 21 can be transmitted to the insulating sleeve 24, and when the insulating sleeve 24 is driven to move, the three-phase moving blades 4 are synchronously driven to move; if the number of the insulating sleeves 24 is two, one movable cutter head is fixed on one insulating sleeve 24, the other two movable cutter heads are fixed on the other insulating sleeve 24, and correspondingly, each insulating sleeve 24 is in transmission connection with the insulating driving shaft 21 through at least one first connecting rod 22 and one second connecting rod 23.
Further, the second connecting rod 23 is composed of two arc plates spaced in parallel, the two arc plates are respectively disposed on two sides of the first connecting rod 22, the two arc plates are respectively disposed on two sides of the insulating sleeve 24, and a space between the two arc plates allows the insulating sleeve 24 and the first connecting rod 22 to freely rotate. Of course, the second link 23 may also be a single arc-shaped plate as long as the rotational connection can be achieved.
In the present embodiment, the cross section of the insulated drive shaft 21 is polygonal, and one end of the first link 22 is provided with a polygonal hole 221 matched with the insulated drive shaft 21. Specifically, the insulated drive shaft 21 has a hexagonal cross section, and one end of the first link 22 is provided with a hexagonal hole. Through the cooperation of the polygonal cross section and the polygonal hole 221, the circumferential limit fit of the first connecting rod 22 and the insulated driving shaft 21 is realized. So set up, can make things convenient for the pot head of first connecting rod 22 on insulating drive shaft 21, convenient dismantlement. Of course, the insulated drive shaft 21 and the first link 22 may also be engaged by a keyway structure.
In the present embodiment, the outer portion of the first insulating portion of the upper beam 1 is further provided with a plurality of raised grid pieces, so that the creepage distance between the three-phase static cutter bits 11 is increased, and similarly, the outer portion of the second insulating portion of the lower beam 3 is provided with a plurality of raised grid pieces, so that the creepage distance between the three-phase connecting portions 31 is increased. The safety is further improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A load switch for an inflatable cabinet is characterized by comprising:
a fixed mount;
the upper cross beam (1) is provided with a first conductive part and a first insulating part, the first insulating part is poured and wrapped outside the first conductive part, a three-phase static tool bit (11) of the first conductive part is exposed out of the first insulating part, and the upper cross beam (1) is fixed on the fixing frame through the first insulating part;
the lower beam (3) is provided with a second conductive part and a second insulating part, the second insulating part is poured and wrapped outside the second conductive part, a third connection part (31) of the second conductive part is exposed out of the second insulating part, and the lower beam (3) is fixed on the fixing frame through the second insulating part;
and the three-phase movable tool bit (4) is rotationally connected with the three-phase connecting part (31).
2. The load switch for the gas-filled cabinet as recited in claim 1, wherein the phase distance of the three-phase static cutter head (11) is 105 mm-115 mm.
3. The load switch for an inflatable cabinet according to claim 1, wherein the fixing frame comprises a first fixing plate (10) and a second fixing plate (8) which are arranged in parallel, and both ends of the upper cross beam (1) and both ends of the lower cross beam (3) are respectively fixed with the first fixing plate (10) and the second fixing plate (8).
4. The load switch for the gas insulated switchgear according to claim 3, wherein two ends of a grounding beam (7) of the load switch are respectively fixed to the first fixing plate (10) and the second fixing plate (8), the grounding beam (7) is provided with a grounding bar (5), and the grounding bar (5) is provided with a grounding contact (6);
when the three-phase moving cutter head (4) rotates to be connected with the grounding contact (6), the three-phase moving cutter head (4) is in a grounding position;
when the three-phase moving cutter head (4) rotates to be connected with the three-phase static cutter head (11), the three-phase moving cutter head (4) is in a switch-on position;
when the three-phase movable cutter head (4) rotates to a position between the grounding contact (6) and the three-phase static cutter head (11), the three-phase movable cutter head (4) is in a brake separating position.
5. The load switch for the gas-filled cabinet according to claim 1, further comprising an arc extinguishing component (9), wherein the arc extinguishing component (9) is arranged on the upper cross beam (1), is positioned on a rotating path of the three-phase moving cutter head (4), and is arranged close to the three-phase static cutter head (11), and each three-phase static cutter head (11) corresponds to one arc extinguishing component (9).
6. The load switch for gas-filled cabinets of claim 5, wherein the arc extinguishing assembly (9) comprises:
the arc extinguishing grid support (91) is fixed on the upper cross beam (1);
and the arc extinguishing grid (92) is arranged on the arc extinguishing grid support (91), and the arc extinguishing grid (92) is used for cutting off electric arcs between the three-phase movable cutter head (4) and the three-phase static cutter head (11).
7. The load switch for the gas-filled cabinet according to claim 1, wherein the three-phase moving blade (4) is driven to rotate by a driving component (2), and the driving component (2) comprises:
the two ends of the insulated driving shaft (21) are rotatably connected to the fixed frame, and the insulated driving shaft (21) is used for being connected with an external power component;
the first connecting rod (22), one end of the first connecting rod (22) is limited and fixed on the insulated driving shaft (21) in the circumferential direction;
one end of the second connecting rod (23) is rotatably connected with the other end of the first connecting rod (22);
insulating cover (24), the suit is fixed in three-phase moves tool bit (4), the other end of second connecting rod (23) with insulating cover (24) rotate to be connected, first connecting rod (22), second connecting rod (23) with three-phase moves tool bit (4) and forms four-bar linkage.
8. The load switch for the gas insulated switchgear according to claim 7, wherein the number of the first connecting rod (22), the second connecting rod (23) and the insulating sleeve (24) is three, and each moving head of the three moving heads (4) corresponds to one insulating sleeve (24), one first connecting rod (22) and one second connecting rod (23).
9. The load switch for gas-filled cabinets according to claim 7, characterized in that the cross section of the insulated driving shaft (21) is polygonal, and one end of the first connecting rod (22) is provided with a polygonal hole (221) matching with the insulated driving shaft (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021743949.8U CN213184095U (en) | 2020-08-19 | 2020-08-19 | Load switch for inflating cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021743949.8U CN213184095U (en) | 2020-08-19 | 2020-08-19 | Load switch for inflating cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213184095U true CN213184095U (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021743949.8U Active CN213184095U (en) | 2020-08-19 | 2020-08-19 | Load switch for inflating cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213184095U (en) |
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2020
- 2020-08-19 CN CN202021743949.8U patent/CN213184095U/en active Active
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