CN220774238U - Mounting structure of thermal relay contact piece - Google Patents
Mounting structure of thermal relay contact piece Download PDFInfo
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- CN220774238U CN220774238U CN202322321896.0U CN202322321896U CN220774238U CN 220774238 U CN220774238 U CN 220774238U CN 202322321896 U CN202322321896 U CN 202322321896U CN 220774238 U CN220774238 U CN 220774238U
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- 239000002184 metal Substances 0.000 claims description 26
- 238000009434 installation Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000008859 change Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model relates to the technical field of thermal relays and discloses a mounting structure of a thermal relay contact piece, which comprises a shell, wherein a top plate is arranged on the shell, a first cross screw is arranged at the upper end of the top plate, a first threaded hole is formed in the upper end of the shell, an indication scale is fixedly arranged on the outer side of the shell, a first mounting hole is formed in the outer side of the shell, a first fixing screw is arranged on the inner side of the first mounting hole, a second mounting hole is formed in the outer side of the shell, and a second fixing screw is arranged on the inner side of the second mounting hole. This mounting structure of thermal relay contact piece is provided with the spring, and reset button can reset immediately when using, and the spliced pole adopts the higher and difficult heat conduction's of fusing point metal material to make, need not worry that reset button appears melting the condition, does not need frequent maintenance, has adopted threaded connection and plug connection's connected mode, makes things convenient for the staff to maintain and change, has improved work efficiency greatly, and the practicality is higher.
Description
Technical Field
The utility model relates to the technical field of thermal relays, in particular to a mounting structure of a thermal relay contact piece.
Background
A thermal relay is an electromagnetic relay that controls switching of a circuit by a change in temperature. The temperature control and protection device has wide application in the aspects of temperature control and protection, and is commonly used in the fields of household appliances, industrial equipment, automobiles and the like. The principle of operation of a thermal relay is based on the nature of thermal expansion and contraction. It is typically composed of a combination of a temperature sensitive element and an electromagnetic relay. When the ambient temperature rises, the temperature sensitive element expands, causing deformation of the bimetal, thereby triggering the action of the relay, cutting off or connecting the circuit. When the temperature drops, the temperature sensitive element contracts, the bimetallic strip returns to the original state, and the relay correspondingly switches states.
Chinese utility model patent publication No.: CN208655526U, disclosing: the mounting structure of thermal relay contact piece, this mounting structure of thermal relay contact piece has adopted the rubber rope to connect the separation blade, and when inside temperature is higher, the rubber rope appears damaging easily, needs often to maintain, inconvenient use, and the practicality is relatively poor, and this mounting structure of thermal relay contact piece simultaneously can not change inside contact piece and sheetmetal fast, if break down, needs to maintain for a long time, and work efficiency is lower, and the practicality is relatively poor.
Disclosure of Invention
(one) solving the technical problems
In order to overcome the defects in the prior art, the utility model provides a mounting structure of a thermal relay contact piece, which aims to solve the problems in the background.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the mounting structure of the thermal relay contact sheet comprises a shell, a top plate is arranged on the shell, a first cross screw is arranged at the upper end of the top plate, a first threaded hole is formed in the upper end of the shell, an indication scale is fixedly arranged on the outer side of the shell, a first mounting hole is formed in the outer side of the shell, a first fixing screw is arranged on the inner side of the first mounting hole, a second mounting hole is formed in the outer side of the shell, a second fixing screw is arranged on the inner side of the second mounting hole, a first connecting hole and a second connecting hole are formed in the lower end of the shell, a third fixing screw is arranged on the outer side of the shell, a third connecting hole is formed in the inner side of the third mounting hole, an adjusting button is fixedly arranged on the upper end of the top plate, a connecting sheet is fixedly arranged on the inner side of the shell, a reset button is arranged on the upper end of the connecting plate, a connecting post is fixedly arranged on the lower end of the reset button, a connecting post is fixedly arranged on the outer side of the connecting post, a second fixing plate is fixedly arranged on the inner side of the connecting post, a second metal connecting plate is fixedly arranged on the inner side of the connecting post, a second connecting plate is fixedly arranged on the connecting post, a second connecting plate is fixedly arranged on the inner side of the connecting post, a connecting plate is fixedly arranged on the connecting post, and has a second connecting plate is fixedly arranged on the connecting plate, and has a connecting plate and has fixed plate, the lower extreme of stationary blade is provided with the cross screw III, threaded hole III has been seted up to the inboard of connecting plate, the outside fixed mounting of stationary blade has the stopper, the outside fixed mounting of stationary blade has connecting contact II, the outside of stationary blade is provided with contact one, the inboard fixed mounting of contact one has spliced pole one, spliced eye one has been seted up in the outside of stationary blade, the inboard fixed mounting of contact one has connecting contact III, the outside of stationary blade is provided with contact two, the inboard fixed mounting of contact two has spliced pole two, spliced eye two has been seted up in the outside of stationary blade, the outside fixed mounting of contact two has connecting contact four.
Preferably, the first cross screw and the first threaded hole are provided with the same two, and the first cross screw and the first threaded hole are symmetrically distributed about the central line of the shell, and are in threaded connection.
Through the technical scheme, the first cross screw is screwed in the first alignment threaded hole until the first cross screw completely enters the first threaded hole, so that the top plate and the shell are completely fastened, and the top plate and the shell can be installed.
Preferably, the first connecting hole extends to the inside through the first mounting hole, the second connecting hole extends to the inside through the second mounting hole, the third connecting hole extends to the inside through the third mounting hole, and the outer side of the adjusting knob is provided with a plurality of scales and is distributed on the surface of the adjusting knob.
Through above-mentioned technical scheme, with cable alignment connecting hole one insert, fix the cable in mounting hole one through set screw one for thermal relay and contactor connect, with cable alignment connecting hole two insert, fix the cable in mounting hole two through set screw two, make alarm indicator and thermal relay connect, with cable alignment connecting hole three insert, fix the cable in mounting hole three through set screw three, make thermal relay and motor connect, adjust different powers through the adjusting knob, when the scale alignment indicates the scale, just represent what power.
Preferably, the second cross screw and the second threaded hole are in plug connection, and the metal sheet and the heating element are provided with the same plurality of metal sheets and the same heating element and are equidistantly distributed on the inner side of the connecting plate.
Through the technical scheme, the second cross screw is screwed into the threaded hole II until the second cross screw completely enters the threaded hole II, so that the metal sheet and the connecting plate are completely fastened, the metal sheet and the connecting plate can be installed, the heating element in the metal sheet can be continuously heated during operation, after power is overloaded, the metal sheet can bend, the metal sheet pushes the moving plate to move, the moving plate pushes the first contact sheet, the third connecting contact and the fourth connecting contact are connected, the thermal relay is powered off, and the device is protected.
Preferably, the third cross screw and the third threaded hole are in threaded connection, and the first connecting contact and the second connecting contact are in contact with each other.
Through above-mentioned technical scheme, with the three screw-in of cross screw three alignment screw hole three, until the three inside that gets into screw hole three completely of cross screw for stationary blade and connecting plate fasten completely, can accomplish the installation of stationary blade and connecting plate, if break down, can dismantle fast, avoid appearing the conflagration.
Preferably, the first plug-in post and the first plug-in hole are in plug-in connection, and the second plug-in post and the second plug-in hole are in plug-in connection.
Through the technical scheme, the first inserting column is aligned with the first inserting hole until the first inserting column completely enters the first inserting hole, the first contact piece and the fixing piece can be installed, the second inserting column is aligned with the second inserting hole and inserted until the second inserting column completely enters the second inserting hole, and the second contact piece and the fixing piece can be installed.
Compared with the prior art, the utility model provides a mounting structure of a thermal relay contact piece, which has the following beneficial effects: this mounting structure of thermal relay contact, be provided with spring one, it is spacing to carry out through a pair of spliced pole of spring, reset button can reset immediately when using, simultaneously, the spliced pole adopts the higher and difficult heat conduction's of fusing point metal material to make, when inside temperature is higher, need not worry reset button and appear melting the condition, do not need frequent maintenance, make things convenient for the staff to use, the practicality is stronger, mounting structure of this thermal relay contact has adopted threaded connection and plug connection's connected mode, interior part can dismantle fast and maintain, make things convenient for the staff to maintain and change, work efficiency has been improved greatly, the practicality is higher.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic view of a split structure of the present utility model;
FIG. 3 is a schematic view of the mounting structure of the reset button and the connecting plate of the present utility model;
FIG. 4 is a schematic view of the mounting structure of the metal sheet and the connecting plate of the present utility model;
FIG. 5 is a schematic view of the mounting structure of the moving plate and the connecting plate of the present utility model;
FIG. 6 is a schematic view of the mounting structure of the contact and stator of the present utility model;
FIG. 7 is a schematic cross-sectional view of a sheet metal according to the present utility model;
fig. 8 is an enlarged schematic view of the structure of fig. 4 a according to the present utility model.
Wherein: 1. a housing; 2. a top plate; 3. a cross screw I; 4. a first threaded hole; 5. an indication scale; 6. a first mounting hole; 7. a first fixing screw; 8. a second mounting hole; 9. a second fixing screw; 10. a first connecting hole; 11. a second connecting hole; 12. a third mounting hole; 13. a gasket; 14. a fixing screw III; 15. a third connecting hole; 16. an adjusting knob; 17. a connecting sheet; 18. a connecting plate; 19. a reset button; 20. a connecting column; 21. a reset block; 22. a connecting block; 23. a first spring; 24. a first connecting contact; 25. a metal sheet; 26. a heating element; 27. a cross screw II; 28. a threaded hole II; 29. a second spring; 30. a moving plate; 31. a fulcrum; 32. a fixing piece; 33. a cross screw III; 34. a threaded hole III; 35. a limiting block; 36. a second connecting contact; 37. a first contact piece; 38. a first plug-in column; 39. a first plug hole; 40. a third connecting contact; 41. a second contact piece; 42. a second plug-in column; 43. a second plug hole; 44. and a fourth connecting contact.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment one:
as shown in fig. 1-8, the mounting structure of a thermal relay contact provided by the utility model comprises a housing 1, a top plate 2 is arranged on the housing 1, a cross screw 3 is arranged at the upper end of the top plate 2, a threaded hole 4 is arranged at the upper end of the housing 1, an indication scale 5 is fixedly arranged at the outer side of the housing 1, a mounting hole 6 is arranged at the outer side of the housing 1, a fixing screw 7 is arranged at the inner side of the mounting hole 6, a mounting hole 8 is arranged at the outer side of the housing 1, a fixing screw 9 is arranged at the inner side of the mounting hole 8, a connecting hole 10 and a connecting hole 11 are arranged at the lower end of the housing 1, a mounting hole three 12 is arranged at the outer side of the housing 1, a gasket 13 is arranged at the outer side of the gasket 13, a fixing screw three 14 is arranged at the lower end side of the housing 1, a regulating button 16 is arranged at the rotating installation of the housing 1, the upper end of the top plate 2 is fixedly provided with a connecting sheet 17, the inside of the shell 1 is fixedly provided with a connecting plate 18, the upper end of the connecting plate 18 is provided with a reset button 19, the lower end of the reset button 19 is fixedly provided with a connecting column 20, the outer side of the connecting column 20 is fixedly provided with a reset block 21, the inner side of the connecting plate 18 is fixedly provided with a connecting block 22, a first spring 23 is arranged between the connecting column 20 and the connecting block 22, the outer side of the connecting block 22 is fixedly provided with a first connecting contact 24, the inner side of the connecting plate 18 is provided with a metal sheet 25, the inner side of the metal sheet 25 is fixedly provided with a heating element 26, the lower end of the metal sheet 25 is provided with a second cross screw 27, the inner side of the connecting plate 18 is provided with a second threaded hole 28, the inside of the connecting plate 18 is fixedly provided with a second spring 29, the outer side of the second spring 29 is fixedly provided with a moving plate 30, the inner side of the connecting plate 18 is fixedly provided with a fulcrum 31, the inside of connecting plate 18 is provided with stationary blade 32, the lower extreme of stationary blade 32 is provided with cross screw three 33, threaded hole three 34 has been seted up to the inboard of connecting plate 18, the outside fixed mounting of stationary blade 32 has stopper 35, the outside fixed mounting of stationary blade 32 has connecting contact two 36, the outside of stationary blade 32 is provided with contact one 37, the inboard fixed mounting of contact one 37 has spliced pole one 38, spliced eye one 39 has been seted up to the outside of stationary blade 32, the inboard fixed mounting of contact one 37 has connecting contact three 40, the outside of stationary blade 32 is provided with contact two 41, the inboard fixed mounting of contact two 41 has spliced pole two 42, spliced eye two 43 has been seted up to the outside of stationary blade 32, the outside fixed mounting of contact two 41 has connecting contact four 44.
Specifically, the first cross screw 3 and the first threaded hole 4 are provided with two identical screws, the first cross screw 3 and the first threaded hole 4 are symmetrically distributed about the central line of the shell 1, and the first cross screw 3 and the first threaded hole 4 are in threaded connection.
Specifically, the first connecting hole 10 extends to the inside through the first mounting hole 6, the second connecting hole 11 extends to the inside through the second mounting hole 8, the third connecting hole 15 extends to the inside through the third mounting hole 12, a plurality of scales are formed in the outer side of the adjusting knob 16 and distributed on the surface of the adjusting knob 16, and the electric power indicator has the advantages that the first connecting hole 10 is connected with a cable, the cable is fixed in the first mounting hole 6 through the first fixing screw 7 so that the thermal relay and the contactor are connected, the second connecting hole 11 is connected with the cable, the cable is fixed in the second mounting hole 8 through the second fixing screw 9 so that the alarm indicator and the thermal relay are connected, the third connecting hole 15 is connected with the cable is fixed in the third mounting hole 12 through the third fixing screw 14, the thermal relay and the motor are connected, different powers are adjusted through the adjusting knob 16, and when the scales are aligned with the indication scale 5, the power is represented.
Specifically, the second cross screw 27 and the second threaded hole 28 are in plug connection, the metal sheet 25 and the heating element 26 are provided with the same plurality of holes and are equidistantly distributed on the inner side of the connecting plate 18, and the advantage is that the second cross screw 27 is aligned with the second threaded hole 28 until the second cross screw 27 completely enters the interior of the second threaded hole 28, so that the metal sheet 25 and the connecting plate 18 are completely fastened, the installation of the metal sheet 25 and the connecting plate 18 can be completed, the heating element 26 in the metal sheet 25 can continuously heat during operation, after power is overloaded, the metal sheet 25 can bend, the metal sheet 25 pushes the moving plate 30 to move, the moving plate 30 pushes the first contact 37, the third contact 40 and the fourth contact 44 are connected, the thermal relay is powered off, and the device is protected.
Embodiment two:
as shown in fig. 3-8, as an improvement over the previous embodiment.
Specifically, the third cross screw 33 and the third threaded hole 34 are in threaded connection, and the first connecting contact 24 and the second connecting contact 36 are in contact with each other, so that the third cross screw 33 is aligned with the third threaded hole 34 and screwed in until the third cross screw 33 completely enters the inside of the third threaded hole 34, the fixing piece 32 and the connecting plate 18 are completely fastened, the fixing piece 32 and the connecting plate 18 can be installed, and if a fault occurs, the quick disassembly can be performed, and the fire disaster is avoided.
Specifically, the first plug post 38 and the first plug hole 39 are in plug connection, and the second plug post 42 and the second plug hole 43 are in plug connection, which has the advantages that the first plug post 38 is aligned with the first plug hole 39 and inserted until the first plug post 38 completely enters the inside of the first plug hole 39, the installation of the first contact piece 37 and the fixing piece 32 can be completed, and the second plug post 42 is aligned with the second plug hole 43 and inserted until the second plug post 42 completely enters the inside of the second plug hole 43, and the installation of the second contact piece 41 and the fixing piece 32 can be completed.
Working principle: before use, the first cross screw 3 is aligned with the first threaded hole 4 to be screwed in until the first cross screw 3 completely enters the interior of the first threaded hole 4, so that the top plate 2 and the shell 1 are completely fastened, the installation of the top plate 2 and the shell 1 can be completed, the second cross screw 27 is aligned with the second threaded hole 28 to be screwed in until the second cross screw 27 completely enters the interior of the second threaded hole 28, so that the metal sheet 25 and the connecting plate 18 are completely fastened, the installation of the metal sheet 25 and the connecting plate 18 can be completed, the third cross screw 33 is aligned with the third threaded hole 34 to be screwed in until the third cross screw 33 completely enters the interior of the third threaded hole 34, so that the fixing piece 32 and the connecting plate 18 are completely fastened, the installation of the fixing piece 32 and the connecting plate 18 can be completed, the first plug post 38 is aligned with the first plug hole 39 to be inserted until the first plug post 38 completely enters the interior of the first plug hole 39, the installation of the contact piece I37 and the fixing piece 32 can be completed, the plug post II 42 is aligned with the plug hole II 43 and inserted until the plug post II 42 completely enters the interior of the plug hole II 43, the installation of the contact piece II 41 and the fixing piece 32 can be completed, when in use, the cable is connected with the cable alignment connection hole I10, the cable is fixed in the installation hole I6 through the fixing screw I7, the thermal relay is connected with the contactor, the cable alignment connection hole II 11 is connected, the cable is fixed in the installation hole II 8 through the fixing screw II 9, the alarm indicator lamp is connected with the thermal relay, the cable is connected with the cable alignment connection hole III 15, the cable is fixed in the installation hole III 12 through the fixing screw III 14, the thermal relay is connected with the motor, different powers are regulated through the regulating button 16, when the scale alignment indication scale 5, the power is represented, in operation, the heating element 26 in the metal sheet 25 is continuously heated, and after power overload, the metal sheet 25 bends, the metal sheet 25 pushes the moving plate 30 to move, and the moving plate 30 pushes the contact one 37 to connect the third connecting contact 40 and the fourth connecting contact 44, so that the thermal relay is powered off, and the device is protected.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a mounting structure of thermal relay contact piece, includes shell (1), its characterized in that: the utility model is characterized in that a top plate (2) is arranged on the shell (1), a first cross screw (3) is arranged at the upper end of the top plate (2), a first threaded hole (4) is arranged at the upper end of the shell (1), an indication scale (5) is fixedly arranged at the outer side of the shell (1), a first mounting hole (6) is arranged at the outer side of the shell (1), a first fixing screw (7) is arranged at the inner side of the first mounting hole (6), a second mounting hole (8) is arranged at the outer side of the shell (1), a second fixing screw (9) is arranged at the inner side of the second mounting hole (8), a first connecting hole (10) and a second connecting hole (11) are arranged at the lower end of the shell (1), the outer side of the shell (1) is provided with a third mounting hole (12), the inner side of the third mounting hole (12) is provided with a gasket (13), the outer side of the gasket (13) is provided with a third fixing screw (14), the lower end side of the shell (1) is provided with a third connecting hole (15), the rotating installation of the shell (1) is provided with an adjusting button (16), the upper end of the top plate (2) is fixedly provided with a connecting sheet (17), the inner part of the shell (1) is fixedly provided with a connecting plate (18), the upper end of the connecting plate (18) is provided with a reset button (19), the lower extreme fixed mounting of reset button (19) has spliced pole (20), the outside fixed mounting of spliced pole (20) has reset piece (21), the inboard fixed mounting of connecting plate (18) has connecting block (22), be provided with spring one (23) between spliced pole (20) and connecting block (22), the outside fixed mounting of connecting block (22) has connecting contact one (24), the inboard of connecting plate (18) is provided with sheetmetal (25), the inboard fixed mounting of sheetmetal (25) has heating element (26), the lower extreme of sheetmetal (25) is provided with cross screw two (27), threaded hole two (28) have been seted up to the inboard of connecting plate (18), the inside fixed mounting of connecting plate (18) has spring two (29), the outside fixed mounting of spring two (29) has movable plate (30), the inboard fixed mounting of connecting plate (18) has fulcrum (31), the inboard of connecting plate (18) is provided with stationary blade (32), the lower extreme of stationary blade (32) is provided with cross screw three (33), the outside of connecting plate (34) is provided with threaded hole two (35), the utility model discloses a fixing piece, including stationary blade (32), connecting piece, contact piece and connecting piece, connecting piece two (36) are fixed mounting in the outside of stationary blade (32), the inboard fixed mounting of contact piece one (37) has spliced pole one (38), spliced pole one (39) are seted up in the outside of stationary blade (32), the inboard fixed mounting of contact piece one (37) has continuous contact point three (40), the outside of stationary blade (32) is provided with contact piece two (41), the inboard fixed mounting of contact piece two (41) has spliced pole two (42), spliced pole two (43) have been seted up in the outside of stationary blade (32), connecting contact four (44) are fixed mounting in the outside of contact piece two (41).
2. The mounting structure of a thermal relay contact according to claim 1, wherein: the cross screw I (3) and the threaded hole I (4) are provided with the same two, the cross screw I (3) and the threaded hole I (4) are symmetrically distributed with respect to the central line of the shell (1), and the cross screw I (3) and the threaded hole I (4) are in threaded connection.
3. The mounting structure of a thermal relay contact according to claim 1, wherein: the first connecting hole (10) penetrates through the first mounting hole (6) to extend into the first connecting hole, the second connecting hole (11) penetrates through the second mounting hole (8) to extend into the first connecting hole, the third connecting hole (15) penetrates through the third mounting hole (12) to extend into the first connecting hole, and the outer side of the adjusting button (16) is provided with a plurality of scales and is distributed on the surface of the adjusting button (16).
4. The mounting structure of a thermal relay contact according to claim 1, wherein: the second cross screw (27) and the second threaded hole (28) are in plug connection, and the metal sheet (25) and the heating element (26) are provided with the same plurality and are equidistantly distributed on the inner side of the connecting plate (18).
5. The mounting structure of a thermal relay contact according to claim 1, wherein: the third cross screw (33) and the third threaded hole (34) are in threaded connection, and the first connecting contact (24) and the second connecting contact (36) are in contact with each other.
6. The mounting structure of a thermal relay contact according to claim 1, wherein: the first plug-in column (38) and the first plug-in hole (39) are plug-in connection, and the second plug-in column (42) and the second plug-in hole (43) are plug-in connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322321896.0U CN220774238U (en) | 2023-08-29 | 2023-08-29 | Mounting structure of thermal relay contact piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322321896.0U CN220774238U (en) | 2023-08-29 | 2023-08-29 | Mounting structure of thermal relay contact piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220774238U true CN220774238U (en) | 2024-04-12 |
Family
ID=90614157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322321896.0U Active CN220774238U (en) | 2023-08-29 | 2023-08-29 | Mounting structure of thermal relay contact piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220774238U (en) |
-
2023
- 2023-08-29 CN CN202322321896.0U patent/CN220774238U/en active Active
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