CN218256941U - Pressure maintaining equipment - Google Patents
Pressure maintaining equipment Download PDFInfo
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- CN218256941U CN218256941U CN202222461566.7U CN202222461566U CN218256941U CN 218256941 U CN218256941 U CN 218256941U CN 202222461566 U CN202222461566 U CN 202222461566U CN 218256941 U CN218256941 U CN 218256941U
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- 238000000034 method Methods 0.000 abstract description 17
- 238000010586 diagram Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
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- 230000005484 gravity Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
This application belongs to pressurize structural design technical field, concretely relates to pressurize equipment. The pressure maintaining equipment comprises a driving device, a first connecting plate, a connecting piece and a pressure maintaining module, wherein the driving device is connected with the first connecting plate, the driving device can drive the first connecting plate to stretch in the vertical direction, the first connecting plate is located above the pressure maintaining module, the connecting piece extends in the vertical direction, the connecting piece is provided with a limiting part, one of the first connecting plate and the pressure maintaining module is fixedly connected with the connecting piece, the other one of the first connecting plate and the pressure maintaining module is in sliding connection with the connecting piece in the vertical direction, and the first connecting plate and the pressure maintaining module are in limiting fit with the limiting part in the vertical upward direction. The problem that the pressurize dynamics of correlation technique is uncontrollable, can't provide invariable pressurize dynamics can be solved in this application.
Description
Technical Field
The application belongs to the technical field of pressurize structural design, concretely relates to pressurize equipment.
Background
In the process of processing the parts, different parts are often required to be attached together through an adhesion process, and in order to ensure the adhesion reliability of the parts, the parts are usually subjected to pressure maintaining treatment after adhesion.
The related art generally adopts two modes of cylinder pressure maintaining and quick clamping pressure maintaining. The cylinder pressurize utilizes atmospheric pressure to carry out the pressurize to the spare part after bonding, but this kind of pressurize mode can receive the fluctuation influence of atmospheric pressure for the pressurize dynamics is uncontrollable, and the fluctuation range of pressurize dynamics is great. The quick pressure maintaining clamp carries out the pressurize through pressing from both sides the spare part after bonding fast, but this kind of pressurize mode can receive quick stroke and the product dimensional tolerance influence of pressing from both sides for the pressurize dynamics is uncontrollable, can't provide invariable pressurize dynamics.
SUMMERY OF THE UTILITY MODEL
The purpose of this application embodiment is to provide a pressurize equipment, can solve the problem that the pressurize dynamics of correlation technique is uncontrollable, can't provide invariable pressurize dynamics.
In order to solve the technical problem, the present application is implemented as follows:
the embodiment of the application provides a pressurize equipment, including drive arrangement, first connecting plate, connecting piece and pressurize module, drive arrangement links to each other with first connecting plate, drive arrangement can drive first connecting plate and stretch out and draw back in vertical direction, first connecting plate is located the top of pressurize module, the connecting piece extends along vertical direction, the connecting piece is equipped with spacing portion, one in first connecting plate and the pressurize module and connecting piece fixed connection, another is sliding connection in vertical direction with the connecting piece, and with spacing cooperation of spacing portion on vertical ascending direction.
In this application embodiment, first connecting plate passes through connecting piece and pressurize module sliding fit in vertical direction, and drive arrangement can drive first connecting plate and upwards or the lapse along the connecting piece. Treat under the circumstances that the pressurize product need not carry out the pressurize, drive arrangement drives first connecting plate and upwards slides along the connecting piece, after first connecting plate slides to the primary importance, continues to drive first connecting plate upward movement, and first connecting plate can drive the upward movement of pressurize module under the effect of spacing portion, and the pressurize module has the clearance with treating between the pressurize product this moment, that is to say, the pressurize module with treat that the pressurize product separates. Treat under the circumstances that the pressurize product need carry out the pressurize, the first connecting plate of drive arrangement drive moves down, the pressurize module moves down thereupon, when the pressurize module with treat the contact of pressurize product, drive arrangement continues to drive first connecting plate and slides down to the position below the first position along the connecting piece, drive arrangement and first connecting plate do not exert the effort to the pressurize module this moment, that is to say, the effort that the pressurize product was treated to the pressurize module and is the gravity of pressurize module self, consequently, the effort that the pressurize product was treated to the pressurize equipment of this application embodiment is invariable, thereby solve the problem of the pressurize dynamics of correlation technique uncontrollable, can't provide invariable pressurize dynamics.
Drawings
FIG. 1 is a schematic structural diagram of a pressure maintaining device disclosed in an embodiment of the present application when the pressure maintaining device is separated from a product to be maintained;
fig. 2 is a schematic structural diagram of a pressure maintaining device disclosed in an embodiment of the present application when maintaining pressure of a product to be maintained;
FIG. 3 is a schematic view of a partial structure of a pressure maintaining device disclosed in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a first connecting plate disclosed in the embodiment of the present application.
Description of reference numerals:
100-driving device, 200-first connecting plate, 300-connecting piece, 310-limiting part, 400-pressure maintaining module, 410-pressure maintaining piece, 420-second connecting plate, 430-connecting rod, 440-balancing weight, 500-nut, 600-guide rod, 700-shaft sleeve, 800-buffer pad and 900-product to be pressure maintained.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.
The pressure holding device provided by the embodiment of the present application is described in detail by specific embodiments and application scenarios thereof with reference to the accompanying drawings.
As shown in fig. 1 to 4, an embodiment of the present application discloses a pressure maintaining apparatus, which includes a driving device 100, a first connecting plate 200, a connecting member 300, and a pressure maintaining module 400. Alternatively, the driving device 100 may be a linear motor, a hydraulic cylinder, an air cylinder, an electric cylinder, or the like. The dwelling module 400 may be an object having a volume and a mass.
In a specific operation process, in the embodiment of the present application, the first connecting plate 200 is slidably engaged with the pressure maintaining module 400 in the vertical direction through the connecting member 300, and the driving device 100 can drive the first connecting plate 200 to slide upwards or downwards along the connecting member 300. When the pressure maintaining product 900 does not need to maintain pressure, the driving device 100 drives the first connecting plate 200 to slide upwards along the connecting member 300, and after the first connecting plate 200 slides to the first position, the first connecting plate 200 continues to be driven to move upwards, the first connecting plate 200 can drive the pressure maintaining module 400 to move upwards under the action of the limiting portion 310, and at this time, a gap exists between the pressure maintaining module 400 and the pressure maintaining product 900, that is, the pressure maintaining module 400 is separated from the pressure maintaining product 900. Under the condition that the product 900 to be pressure-maintained needs to be pressure-maintained, the driving device 100 drives the first connecting plate 200 to move downwards, the pressure-maintaining module 400 moves downwards along with the first connecting plate 200, when the pressure-maintaining module 400 contacts the product 900 to be pressure-maintained, the driving device 100 continues to drive the first connecting plate 200 to slide downwards along the connecting member 300 to a position below the first position, at this moment, the driving device 100 and the first connecting plate 200 do not apply an acting force to the pressure-maintaining module 400, that is, the acting force applied by the pressure-maintaining module 400 to the product 900 to be pressure-maintained is the gravity of the pressure-maintaining module 400, so that the acting force applied by the pressure-maintaining equipment to the product 900 to be pressure-maintained is invariable, and the problems that the force of the related art is uncontrollable and the constant pressure-maintaining force cannot be provided are solved.
It should be noted that, under the condition that the first connecting plate 200 is fixedly connected with the connecting element 300 and the pressure maintaining module 400 is slidably connected with the connecting element 300 in the vertical direction, the first position is the position when the limiting portion 310 is in limiting fit with the pressure maintaining module 400; under the condition that the pressure maintaining module 400 is fixedly connected with the connecting element 300 and the first connecting plate 200 is slidably connected with the connecting element 300 in the vertical direction, the first position is a position at which the limiting portion 310 is in limiting fit with the first connecting plate 200.
The pressure maintaining module 400 includes a pressure maintaining member 410 and a second connecting plate 420, the pressure maintaining member 410 is connected to the second connecting plate 420, and the second connecting plate 420 is located between the pressure maintaining member 410 and the first connecting plate 200, in an alternative embodiment, the connecting member 300 is fixedly connected to the first connecting plate 200, and the connecting member 300 is slidably connected to the second connecting plate 420, but when the pressure maintaining is performed on the product 900 to be pressure maintained, the first connecting plate 200 drives the connecting member 300 to move downward until the first connecting plate 200 slides to a position below the first position, at which time the bottom surface of the connecting member 300 is lower than the bottom surface of the second connecting plate 420, so that the connecting member 300 occupies a space between the top surface of the product 900 to be pressure maintained and the bottom surface of the second connecting plate 420, which may not only make the connecting member 300 contact the product 900 to be pressure maintained, cause damage to the product 900 to be pressure maintained, but also may hinder the operation of workers. Therefore, in another embodiment, the connecting element 300 is fixedly connected to the second connecting plate 420, and the connecting element 300 is slidably connected to the first connecting plate 200, when the pressure maintaining product 900 is to be maintained, since the connecting element 300 is fixed to the second connecting plate 420, if the connecting element 300 is fixed to the top surface of the second connecting plate 420, the first connecting plate 200 does not drive the connecting element 300 to move in the process of moving downward, the connecting element 300 of this embodiment does not occupy the space between the top surface of the product 900 to be maintained and the bottom surface of the second connecting plate 420, thereby avoiding the problem that the connecting element 300 damages the product 900 to be maintained, and facilitating the operation of the worker during use. The connector 300 may be fixed to the second connection plate 420 by welding, clamping, or the like, but the two fixing methods cannot level the second connection plate 420. Therefore, further, the connecting member 300 is screwed with the second connecting plate 420, and the scheme can facilitate the replacement of the connecting member 300 and the first connecting plate 200; in addition, the connection member 300 and the second connection plate 420 are connected by a screw thread, so that the relative position between the second connection plate 420 and the connection member 300 can be conveniently adjusted, that is, the second connection plate 420 can be leveled in the embodiment, if the second connection plate 420 is inclined relative to the horizontal plane, clamping stagnation is easily generated in the sliding process of the first connection plate 200 relative to the connection member 300, and if the clamping stagnation occurs in the downward sliding process of the first connection plate 200 relative to the connection member 300, the driving device 100 applies an acting force to the product 900 to be subjected to pressure maintaining, so that the pressure maintaining force provided by the pressure maintaining device is not controllable. The dwelling module 400 may also include only the pressure retaining member 410.
In the case that the connection member 300 is threadedly coupled to the second connection plate 420, during the use of the pressure maintaining apparatus, for example: in the process that the driving device 100 drives the first connecting plate 200 to move upwards, so as to drive the second connecting plate 420 and the pressure maintaining member 410 to move upwards, the connecting member 300 may rotate, so that the connecting member 300 and the second connecting plate 420 move relatively, which may cause the second connecting plate 420 to incline with respect to the horizontal plane, and thus, the pressure maintaining force provided by the pressure maintaining device is not controllable. In an alternative embodiment, the bottom end of the connecting member 300 penetrates the second connecting plate 420 and protrudes from the bottom surface of the second connecting plate 420, a nut 500 is screwed on the portion of the connecting member 300 protruding from the second connecting plate 420, and the nut 500 is attached to the bottom surface of the second connecting plate 420, that is, the nut 500 is locked to the bottom surface of the second connecting plate 420. The connecting member 300 according to the embodiment of the present application needs to overcome the friction between the nut 500 and the bottom surface of the second connecting plate 420 during the rotation, so that the connecting member 300 according to the embodiment of the present application is not easily rotated, and the levelness of the second connecting plate 420 can be ensured.
In an alternative embodiment, the pressure maintaining module 400 further comprises a connecting rod 430, a first end of the connecting rod 430 is connected to the second connecting plate 420, and a second end of the connecting rod 430 is connected to the pressure maintaining member 410. If the connecting rod 430 is not arranged, the second connecting plate 420 can be directly connected with the pressure maintaining piece 410, when the pressure maintaining equipment performs pressure maintaining on the product 900 to be subjected to pressure maintaining, the bottom surface of the pressure maintaining piece 410 is in contact with the top surface of the product 900 to be subjected to pressure maintaining, and the distance between the top surface of the product 900 to be subjected to pressure maintaining and the bottom surface of the second connecting plate 420 is the thickness of the pressure maintaining piece 410, that is, the distance between the top surface of the product 900 to be subjected to pressure maintaining and the bottom surface of the second connecting plate 420 is small, so that the operation of workers is not facilitated. After the connecting rod 430 is arranged in this embodiment, the distance between the top surface of the product 900 to be subjected to pressure maintaining and the bottom surface of the second connecting plate 420 is the sum of the thickness of the pressure maintaining element 410 and the height of the connecting rod 430, so that the distance between the top surface of the product 900 to be subjected to pressure maintaining and the bottom surface of the second connecting plate 420 is relatively large after the structure of the embodiment of the application is adopted, and the operation of workers is facilitated.
In an alternative embodiment, the pressure maintaining module 400 further includes a weight block 440, the first end of the connecting rod 430 is detachably connected to the second connecting plate 420, the top surface of the pressure maintaining member 410 is stacked with a plurality of weight blocks 440, each weight block 440 is provided with a through hole, the through hole has an annular hole wall, and at least a portion of the connecting rod 430 is located in the through hole of each weight block 440. Alternatively, the connecting rod 430 may be connected to the second connecting plate 420 by a screw connection, a snap connection, a pin connection, or the like. This application embodiment can dismantle connecting rod 430 from second connecting plate 420, so the pressurize dynamics of pressurize equipment is realized adjusting to the quantity of accessible addition and subtraction balancing weight 440, and the balancing weight 440's of this application through-hole has annular pore wall, connecting piece 300 and the spacing cooperation of this annular pore wall, so alright prevent that drive arrangement 100 from driving the in-process of keeping briquetting and balancing weight 440 rebound, take place the problem that balancing weight 440 breaks away from connecting rod 430.
In another alternative embodiment, the pressure maintaining module 400 further includes a weight block 440, a plurality of weight blocks 440 are stacked on the top surface of the pressure maintaining member 410, each weight block 440 is provided with a through hole, at least a portion of the connecting rod 430 is located in the through hole of each weight block 440, the through hole extends to the outer circumferential surface of the weight block 440 along a first direction, and the first direction is perpendicular to the axial direction of the through hole. The embodiment of this application can be with the quick connecting rod 430 that inserts of balancing weight 440 through balancing weight 440's through-hole, and the speed that consequently balancing weight 440 was changed to this embodiment is very fast, efficiency is higher, can improve production efficiency.
In an alternative embodiment, the pressure maintaining module 400 includes a pressure maintaining element 410 and a second connecting plate 420, the pressure maintaining element 410 is connected to the second connecting plate 420, the second connecting plate 420 is located between the pressure maintaining element 410 and the first connecting plate 200, the second connecting plate 420 is provided with an unthreaded hole, the bottom end of the connecting element 300 is arranged to penetrate through the unthreaded hole and protrude out of the bottom surface of the second connecting plate 420, the part of the connecting element 300 protruding out of the second connecting plate 420 is connected with a nut 500 in a threaded manner, and the nut 500 is attached to the bottom surface of the second connecting plate 420. This embodiment may facilitate replacement of the connector 300 and the first connection plate 200; in addition, the position of the nut 500 relative to the second connecting plate 420 can be adjusted by rotating the nut 500, and then the relative position between the second connecting plate 420 and the connecting member 300 is adjusted, that is, the second connecting plate 420 can be leveled, if the second connecting plate 420 is inclined relative to the horizontal plane, a clamping stagnation is easily generated in the sliding process of the first connecting plate 200 relative to the connecting member 300, and if the clamping stagnation occurs in the downward sliding process of the first connecting plate 200 relative to the connecting member 300, the driving device 100 applies an acting force to the product 900 to be pressure-maintained, so that the pressure-maintaining force provided by the pressure-maintaining device is not controllable.
In an optional embodiment, the connecting member 300 is fixedly connected to the pressure maintaining module 400, a connecting hole is formed in the first connecting plate 200, an axis of the connecting hole extends in a vertical direction, the connecting member 300 is in sliding fit with the connecting hole, the pressure maintaining device further includes a guide rod 600 connected to the pressure maintaining module 400, the guide rod 600 extends in the vertical direction, a shaft sleeve 700 is embedded in the first connecting plate 200, an axis of an inner hole of the shaft sleeve 700 extends in the vertical direction, the guide rod 600 is in sliding fit with the inner hole of the shaft sleeve 700, and a gap between the guide rod 600 and the inner hole of the shaft sleeve 700 is smaller than a gap between the connecting member 300 and the connecting hole. Processing obtains the connecting hole on first connecting plate 200, because the machining precision of this connecting hole is not high, therefore the clearance between connecting hole and the connecting piece 300 is great, if not set up other guide structure, connecting hole and connecting piece 300 probably make the pore wall of connecting piece 300 contact connecting hole at gliding in-process for the jamming phenomenon appears in gliding in-process in first connecting plate 200, drive arrangement 100 can treat pressurize product 900 this moment and exert the effort, thereby make the pressurize dynamics that the pressurize equipment provided uncontrollable. And the clearance between the guide arm 600 of this application embodiment and the hole of axle sleeve 700 is less, consequently can make the guidance quality between guide arm 600 and the axle sleeve 700 better, avoids first connecting plate 200 the problem of jamming to appear at gliding in-process to make the pressurize equipment provide controllable pressurize dynamics.
In an optional embodiment, the bottom surface of pressurize module 400 has the profile face, that is to say, at least part of the bottom surface of pressurize module 400 is the profile face, the profile face can with treat the fine laminating of the top surface of pressurize product 900, consequently set up behind the profile face pressurize equipment treat the effort that pressurize product 900 applyed can be used in to treating pressurize product 900 uniformly, thereby can avoid the pressurize equipment to treat the problem that the power of applying of pressurize product 900 is too concentrated and lead to treating pressurize product 900 to damage, can avoid the pressurize equipment to only can treat the part of pressurize product 900 and carry out the pressurize equally, make the problem that the pressurize effect of pressurize equipment is not good.
In an alternative embodiment, the bottom surface of the pressure maintaining module 400 is provided with a cushion pad 800. The buffer pad 800 can reduce the impact of the pressure maintaining module 400 on the product 900 to be subjected to pressure maintaining, and reduce the risk of damage to the product 900 to be subjected to pressure maintaining. Further, the cushion pad 800 is disposed on the profiling surface of the pressure maintaining module 400.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. Pressure maintaining equipment is characterized by comprising a driving device (100), a first connecting plate (200), a connecting piece (300) and a pressure maintaining module (400),
the driving device (100) is connected with the first connecting plate (200), the driving device (100) can drive the first connecting plate (200) to stretch in the vertical direction, the first connecting plate (200) is positioned above the pressure maintaining module (400), the connecting piece (300) extends in the vertical direction, the connecting piece (300) is provided with a limiting part (310),
one of the first connecting plate (200) and the pressure maintaining module (400) is fixedly connected with the connecting piece (300), and the other one of the first connecting plate and the pressure maintaining module is in sliding connection with the connecting piece (300) in the vertical direction and is in limit fit with the limit part (310) in the vertical upward direction.
2. The dwell apparatus according to claim 1, characterized in that the dwell module (400) comprises a dwell (410) and a second connecting plate (420), the dwell (410) being connected to the second connecting plate (420), the second connecting plate (420) being located between the dwell (410) and the first connecting plate (200), the connection (300) being in threaded connection with the second connecting plate (420).
3. The pressure maintaining apparatus according to claim 2, wherein the bottom end of the connecting member (300) penetrates through the second connecting plate (420) and protrudes from the bottom surface of the second connecting plate (420), a nut (500) is screwed to a portion of the connecting member (300) protruding from the second connecting plate (420), and the nut (500) is attached to the bottom surface of the second connecting plate (420).
4. The dwelling apparatus of claim 2, wherein the dwelling module (400) further comprises a connecting rod (430), a first end of the connecting rod (430) being connected to the second connecting plate (420), and a second end of the connecting rod (430) being connected to the dwelling (410).
5. A dwelling apparatus according to claim 4, characterized in that the dwelling module (400) further comprises a weight block (440), the first end of the connecting rod (430) being detachably connected to the second connecting plate (420), the top surface of the dwelling member (410) being stacked with a plurality of the weight blocks (440), each of the weight blocks (440) being provided with a through hole having an annular hole wall, at least part of the connecting rod (430) being located in the through hole of each of the weight blocks (440).
6. The dwelling apparatus of claim 4, wherein the dwelling module (400) further comprises a weight block (440), the top surface of the dwelling member (410) is stacked with a plurality of the weight blocks (440), each of the weight blocks (440) is provided with a through hole, at least a portion of the connecting rod (430) is located in the through hole of each of the weight blocks (440), the through hole extends to an outer circumferential surface of the weight block (440) in a first direction, the first direction being perpendicular to an axial direction of the through hole.
7. The pressure maintaining apparatus according to claim 1, wherein the pressure maintaining module (400) comprises a pressure maintaining element (410) and a second connecting plate (420), the pressure maintaining element (410) is connected to the second connecting plate (420), the second connecting plate (420) is located between the pressure maintaining element (410) and the first connecting plate (200), the second connecting plate (420) is provided with a light hole, the bottom end of the connecting element (300) is arranged to penetrate through the light hole and protrude out of the bottom surface of the second connecting plate (420), a nut (500) is connected to the part of the connecting element (300) protruding out of the second connecting plate (420) in a threaded manner, and the nut (500) is attached to the bottom surface of the second connecting plate (420).
8. Pressure maintaining device according to claim 1, characterized in that the connecting piece (300) is fixedly connected with the pressure maintaining module (400), a connecting hole is provided on the first connecting plate (200), an axis of the connecting hole extends in a vertical direction, the connecting piece (300) is in sliding fit with the connecting hole,
the pressurize equipment still include with guide arm (600) that pressurize module (400) is connected, vertical direction extension is followed in guide arm (600), it is equipped with axle sleeve (700) to inlay on first connecting plate (200), the axis of the hole of axle sleeve (700) extends along vertical direction, guide arm (600) with the hole sliding fit of axle sleeve (700), just guide arm (600) with clearance between the hole of axle sleeve (700) is less than connecting piece (300) with clearance between the connecting hole.
9. The dwelling apparatus of claim 1, wherein a bottom surface of the dwelling module (400) has a contoured surface.
10. The dwelling apparatus of claim 1, wherein a bottom surface of the dwelling module (400) is provided with a cushion pad (800).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222461566.7U CN218256941U (en) | 2022-09-16 | 2022-09-16 | Pressure maintaining equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222461566.7U CN218256941U (en) | 2022-09-16 | 2022-09-16 | Pressure maintaining equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218256941U true CN218256941U (en) | 2023-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222461566.7U Active CN218256941U (en) | 2022-09-16 | 2022-09-16 | Pressure maintaining equipment |
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| Country | Link |
|---|---|
| CN (1) | CN218256941U (en) |
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- 2022-09-16 CN CN202222461566.7U patent/CN218256941U/en active Active
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