CN219638757U - Telescopic cat ladder for building installation - Google Patents
Telescopic cat ladder for building installation Download PDFInfo
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- CN219638757U CN219638757U CN202320401572.5U CN202320401572U CN219638757U CN 219638757 U CN219638757 U CN 219638757U CN 202320401572 U CN202320401572 U CN 202320401572U CN 219638757 U CN219638757 U CN 219638757U
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- handrail component
- telescopic
- ladder
- pulley
- building installation
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- 238000009434 installation Methods 0.000 title claims abstract description 37
- 241000282326 Felis catus Species 0.000 title abstract description 27
- 230000009194 climbing Effects 0.000 abstract description 17
- 239000000463 material Substances 0.000 abstract description 9
- 230000009193 crawling Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of building installation engineering, and discloses a telescopic crawling ladder for building installation. This a telescopic cat ladder for building installation is including first handrail subassembly and the second handrail subassembly that mutual symmetry set up, first handrail subassembly with second handrail subassembly is respectively including a plurality of festival pole, but adjacent two festival poles telescopic connection, every festival pole corresponds and is provided with the footboard, first handrail subassembly and/or be provided with the pulley on the top festival pole of second handrail subassembly, one side of pulley is provided with the shake handle. In the utility model, the pulleys are arranged on the top section bar of the handrail component, so that a user at the top of the ladder can lift the articles on the ground to a high place for use by shaking the handles of the pulleys without repeatedly climbing up and down if the user needs to use the articles on the ground (such as building installation materials, installation tools and the like).
Description
Technical Field
The utility model relates to the technical field of building installation engineering, in particular to a telescopic crawling ladder for building installation.
Background
The telescopic ladder is a ladder which stretches and shortens like a fishing rod, is divided into an engineering telescopic ladder and a bamboo joint telescopic ladder, is quite convenient to carry and store, can be placed in a closet of a household, a study room, a bed bottom or a trunk of an automobile, has ultra-light weight, ultra-short height, ultra-strong safety, humanized design and attractive and elegant appearance, is an ideal ladder for high-altitude operation of departments such as household, hotel, market, enterprise, electric telecommunication, urban construction, public security fire protection, heat supply and air supply, gardens and the like, and is also necessary equipment for field operation of vehicles such as various emergency repair vehicles, line inspection vehicles and command vehicles.
In the building installation, telescopic cat ladder can often be used, however when the user is on the cat ladder top, often can be because of need other things and the cat ladder about repeatedly, not only extravagant a large amount of time like this, can step on the footboard very easily in-process of going up and down the cat ladder moreover, causes the potential safety hazard.
Disclosure of Invention
The utility model aims to solve the problem that an existing telescopic ladder is inconvenient to take things at the top end of the ladder, and provides the telescopic ladder for building installation.
In order to achieve the above purpose, the utility model provides a telescopic ladder for building installation, which comprises a first handrail component and a second handrail component which are symmetrically arranged, wherein each first handrail component and each second handrail component comprise a plurality of section bars, every two adjacent section bars are in telescopic connection, each section bar is correspondingly provided with a pedal, a pulley is arranged on the top section bar of each first handrail component and/or each second handrail component, and one side of each pulley is provided with a shaking handle.
Preferably, a rope is arranged in the pulley.
Preferably, one end of the rope is connected with a storage barrel.
Preferably, the pulley is mounted on the top node bar by a support bracket.
Preferably, the first handrail component and the bottom section bar of the second handrail component are provided with supporting rods, one ends of the supporting rods are connected with the bottom section bar, and the other ends of the supporting rods are connected with the movable wheels.
Preferably, a braking structure is arranged on the movable wheel.
Preferably, the support bar is connected to the bottom section bar by means of a hinge.
Preferably, the upper surface of the pedal is provided with an anti-slip structure.
Preferably, the anti-slip structure is a rubber gasket.
Preferably, the thickness of the rubber gasket is 0.5-2cm, and the upper surface of the rubber gasket is provided with an anti-slip pattern.
According to the telescopic ladder for building installation, the pulleys are arranged on the top section rods of the handrail components, and in the use process, if a user at the top of the ladder needs to use articles (such as building installation materials and installation tools) on the ground, the articles on the ground can be lifted to a high place through the shaking handles of the shaking pulleys for use, and repeated climbing and climbing down are not needed.
In a more preferred embodiment, through setting up the support frame on the bottom section pole of holding up the pole subassembly to one section at the support frame sets up the removal wheel, further sets up brake structure on the removal wheel, when using, can increase the strong point of cat ladder bottom on the one hand, improves the stability of cat ladder, and on the other hand promotes the pole subassembly of holding up, makes whole cat ladder slide under the effect of removal wheel, thereby can conveniently remove the cat ladder.
In another preferred embodiment, by providing the antiskid structure on the pedal, particularly using a rubber gasket having an antiskid pattern on the surface as the antiskid structure, the user can stand on the pedal more smoothly when using the antiskid structure, and the user can be prevented from stepping on the antiskid structure during climbing up and down the ladder.
Drawings
FIG. 1 is a schematic view of a telescopic ladder according to the present utility model;
fig. 2 is a schematic view of a telescopic ladder according to the present utility model with a support bar with moving wheels.
Description of the reference numerals
1. A first boom assembly; 2. a second boom assembly; 3. a section bar; 4. a pedal; 5. a pulley; 51. shaking the handle; 52. a rope; 53. a storage barrel; 6. a support frame; 7. a support rod; 8. moving the wheels; 9. and a brake structure.
Detailed Description
The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
In the description of the present utility model, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The terms "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or groups thereof may be present or added.
In addition, terms of orientation or positional relationship indicated by "upper", "lower", "top", "bottom", etc., are described based on the orientation or relative positional relationship shown in the drawings, are merely for convenience of description of the present utility model, and do not indicate that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either permanently connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1, the telescopic ladder for building installation according to the present utility model comprises a first handrail component 1 and a second handrail component 2 which are symmetrically arranged, the first handrail component 1 and the second handrail component 2 each comprise a plurality of section bars 3, two adjacent section bars 3 are in telescopic connection, each section bar 3 is correspondingly provided with a pedal 4, a pulley 5 is arranged on a top section bar of the first handrail component 1 and/or the second handrail component 2, and one side of the pulley 5 is provided with a shaking handle 51. In the telescopic ladder according to the present utility model, the pulleys 5 are provided on the top section bar of the handrail assembly, so that if a user at the top of the ladder needs to use an article on the ground (such as a building installation material, an installation tool, etc.), the user can lift the article on the ground to a high place by shaking the handles 51 of the pulleys 5 for use without repeatedly climbing up and down, and thus the telescopic ladder is particularly suitable for building installation.
In the telescopic ladder according to the present utility model, the first handrail assembly 1 and the second handrail assembly 2 are symmetrically disposed, for example, parallel to each other, or the telescopic ladder forms an isosceles trapezoid. In the first handrail component 1 and the second handrail component 2, two adjacent section bars 3 are connected in a telescopic way, and when the telescopic section bars are stretched to the longest distance, the clamping components are ejected at the joint of the two section bars to clamp the two sections together, so that the telescopic section bars are prevented from being excessively stretched to be separated and prevented from being retracted.
In the telescopic ladder according to the present utility model, the rope 52 is disposed in the pulley 5. One end of the rope 52 is fixed to the pulley 5, and the rope 52 can be put on the ground by shaking the shaking handle 51 on the pulley 5, then an article (such as a building installation material, an installation tool, etc.) on the ground is tied to the rope 52, and then the article is lifted to a high place by the shaking handle 51 for use. Preferably, one end of the rope 52 is connected to a storage tub 53. In this preferred case, the articles (e.g., building installation materials, installation tools, etc.) may be loaded by the storage bucket 53, thereby preventing the articles from slipping off when they are raised high.
In the telescopic ladder of the utility model, the pulley 5 is mounted on the top section bar through the support frame 6.
In the telescopic ladder of the present utility model, as shown in fig. 2, the bottom section bars of the first handrail component 1 and the second handrail component 2 are provided with support bars 7, one end of each support bar 7 is connected with the bottom section bar, and the other end is connected with a movable wheel 8. Under this kind of circumstances, during the use, can increase the strong point of cat ladder bottom on the one hand, improve the stability of cat ladder, on the other hand promotes the pole subassembly of holding up, makes whole cat ladder slide under the effect of removal wheel to can conveniently remove the cat ladder.
Preferably, the mobile wheel 8 is provided with a braking structure 9. The movable wheels 8 can be locked through the brake structure 9, so that a user is prevented from moving during climbing.
In the telescopic ladder according to the present utility model, the support rod 7 is connected to the bottom section bar in a hinged manner. According to the connection mode, the included angle between the supporting rod 7 and the supporting rod component can be flexibly adjusted.
In the telescopic ladder of the present utility model, an anti-slip structure is disposed on the upper surface of the pedal 4. Preferably, the anti-slip structure is a rubber gasket. Further preferably, the thickness of the rubber gasket is 0.5-2cm, and the upper surface of the rubber gasket has an anti-slip pattern. In the present utility model, the non-slip pattern may be a profile of a sole shape and have a plurality of protruding lines. According to the structural configuration, when the stair climbing device is used, a user can more stably stand on the pedal, and the user can be prevented from stepping and sliding in the process of climbing up and down the stair.
In some embodiments, the telescopic ladder comprises a first handrail component 1 and a second handrail component 2 which are symmetrically arranged, the first handrail component 1 and the second handrail component 2 respectively comprise a plurality of section bars 3, every two adjacent section bars 3 are in telescopic connection, each section bar 3 is correspondingly provided with a pedal 4, a pulley 5 is arranged on the top section bar of the first handrail component 1 and/or the second handrail component 2, one side of the pulley 5 is provided with a shaking handle 51, and the upper surface of the pedal 4 is provided with an anti-slip structure.
In other embodiments, the telescopic ladder comprises a first handrail component 1 and a second handrail component 2 which are symmetrically arranged, each of the first handrail component 1 and the second handrail component 2 comprises a plurality of section bars 3, two adjacent section bars 3 are connected in a telescopic way, each section bar 3 is correspondingly provided with a pedal 4, a pulley 5 is arranged on the top section bar of the first handrail component 1 and/or the second handrail component 2, and one side of the pulley 5 is provided with a shaking handle 51; the first handrail component 1 and the bottom section bar of the second handrail component 2 are provided with a supporting rod 7, one end of the supporting rod 7 is connected with the bottom section bar, and the other end of the supporting rod is connected with a movable wheel 8.
In other embodiments, the telescopic ladder comprises a first handrail component 1 and a second handrail component 2 which are symmetrically arranged, each of the first handrail component 1 and the second handrail component 2 comprises a plurality of section bars 3, two adjacent section bars 3 are connected in a telescopic way, each section bar 3 is correspondingly provided with a pedal 4, a pulley 5 is arranged on the top section bar of the first handrail component 1 and/or the second handrail component 2, and one side of the pulley 5 is provided with a shaking handle 51; a support rod 7 is arranged on the bottom section rods of the first support rod assembly 1 and the second support rod assembly 2, one end of the support rod 7 is connected with the bottom section rod, and the other end is connected with a movable wheel 8; an anti-slip structure is arranged on the upper surface of the pedal 4.
In other embodiments, the telescopic ladder comprises a first handrail component 1 and a second handrail component 2 which are symmetrically arranged, each of the first handrail component 1 and the second handrail component 2 comprises a plurality of section bars 3, two adjacent section bars 3 are connected in a telescopic way, each section bar 3 is correspondingly provided with a pedal 4, a pulley 5 is arranged on the top section bar of the first handrail component 1 and/or the second handrail component 2, and one side of the pulley 5 is provided with a shaking handle 51; the first handrail component 1 and the second handrail component 2 are provided with a supporting rod 7 on a bottom section rod, one end of the supporting rod 7 is connected with the bottom section rod, the other end of the supporting rod is connected with a movable wheel 8, the movable wheel 8 is provided with a brake structure 9, and the supporting rod 7 is connected with the bottom section rod in a hinged mode; an anti-slip structure is arranged on the upper surface of the pedal 4.
In other embodiments, the telescopic ladder comprises a first handrail component 1 and a second handrail component 2 which are symmetrically arranged, each of the first handrail component 1 and the second handrail component 2 comprises a plurality of section bars 3, two adjacent section bars 3 are connected in a telescopic way, each section bar 3 is correspondingly provided with a pedal 4, a pulley 5 is arranged on the top section bar of the first handrail component 1 and/or the second handrail component 2, and one side of the pulley 5 is provided with a shaking handle 51; the first handrail component 1 and the second handrail component 2 are provided with a supporting rod 7 on a bottom section rod, one end of the supporting rod 7 is connected with the bottom section rod, the other end of the supporting rod is connected with a movable wheel 8, the movable wheel 8 is provided with a brake structure 9, and the supporting rod 7 is connected with the bottom section rod in a hinged mode; the upper surface of the pedal 4 is provided with an anti-slip structure, the anti-slip structure is a rubber gasket, the thickness of the rubber gasket is 0.5-2cm, and the upper surface of the rubber gasket is provided with anti-slip patterns.
In other embodiments, the telescopic ladder comprises a first handrail component 1 and a second handrail component 2 which are symmetrically arranged, each of the first handrail component 1 and the second handrail component 2 comprises a plurality of section bars 3, every two adjacent section bars 3 are connected in a telescopic way, each section bar 3 is correspondingly provided with a pedal 4, a pulley 5 is arranged on the top section bar of the first handrail component 1 and/or the second handrail component 2, one side of the pulley 5 is provided with a shaking handle 51, a rope 52 is arranged in the pulley 5, one end of the rope 52 is connected with a storage barrel 53, and the pulley 5 is arranged on the top section bar through a support frame 6; the first handrail component 1 and the second handrail component 2 are provided with a supporting rod 7 on a bottom section rod, one end of the supporting rod 7 is connected with the bottom section rod, the other end of the supporting rod is connected with a movable wheel 8, the movable wheel 8 is provided with a brake structure 9, and the supporting rod 7 is connected with the bottom section rod in a hinged mode; the upper surface of the pedal 4 is provided with an anti-slip structure, the anti-slip structure is a rubber gasket, the thickness of the rubber gasket is 0.5-2cm, and the upper surface of the rubber gasket is provided with anti-slip patterns.
The telescopic ladder for building installation according to the present utility model will be further described by way of examples. The embodiment is implemented on the premise of the technical scheme of the utility model, and detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following embodiment.
The experimental methods in the following examples, unless otherwise specified, are all conventional in the art. The experimental materials used in the examples described below are commercially available unless otherwise specified.
Example 1
As shown in fig. 1 and 2, the telescopic ladder comprises a first handrail component 1 and a second handrail component 2 which are symmetrically arranged with each other (in an isosceles trapezoid shape after being stretched), the first handrail component 1 and the second handrail component 2 respectively comprise a plurality of section bars 3, two adjacent section bars 3 are in telescopic connection, each section bar 3 is correspondingly provided with a pedal 4, a pulley 5 is arranged on the top section bar of the second handrail component 2, one side of the pulley 5 is provided with a shaking handle 51, a rope 52 is arranged in the pulley 5, and the pulley 5 is arranged on the top section bar through a supporting frame 6; the two-way lifting device is characterized in that support rods 7 are arranged on bottom section rods of the first support rod assembly 1 and the second support rod assembly 2, one end of each support rod 7 is connected with the bottom section rod, the other end of each support rod 7 is connected with a movable wheel 8, a brake structure 9 is arranged on each movable wheel 8, and each support rod 7 is connected with the bottom section rod in a hinged mode; the upper surface of footboard 4 is provided with anti-skidding structure, anti-skidding structure is rubber gasket, rubber gasket's thickness is 1cm, just rubber gasket's upper surface has anti-skidding pattern.
According to the telescopic ladder of the embodiment, in the use process, if a user at the top of the ladder needs to use articles (such as building installation materials, installation tools and the like) on the ground, the articles on the ground can be lifted to a high place by shaking the shaking handle of the pulley for use, and repeated climbing and climbing down are not needed; moreover, through the movable wheels, on one hand, the supporting point at the bottom of the cat ladder can be increased, the stability of the cat ladder is improved, and on the other hand, the handrail component is pushed, so that the whole cat ladder can slide under the action of the movable wheels, and the cat ladder can be conveniently moved; in addition, through the antiskid structure that sets up on the footboard for the user can stand on the footboard more steadily, and can avoid the user to take place to step on the slip accident in-process about climbing the ladder.
Example 2
As shown in fig. 1 and 2, the telescopic ladder comprises a first handrail component 1 and a second handrail component 2 which are symmetrically arranged with each other (after being stretched, the first handrail component 1 and the second handrail component 2 respectively comprise a plurality of section bars 3, two adjacent section bars 3 are in telescopic connection, each section bar 3 is correspondingly provided with a pedal 4, a pulley 5 is arranged on the top section bar of the second handrail component 2, one side of the pulley 5 is provided with a shaking handle 51, a rope 52 is arranged in the pulley 5, one end of the rope 52 is connected with a storage barrel 53, and the pulley 5 is arranged on the top section bar through a support frame 6; the two-way lifting device is characterized in that support rods 7 are arranged on bottom section rods of the first support rod assembly 1 and the second support rod assembly 2, one end of each support rod 7 is connected with the bottom section rod, the other end of each support rod 7 is connected with a movable wheel 8, a brake structure 9 is arranged on each movable wheel 8, and each support rod 7 is connected with the bottom section rod in a hinged mode; the upper surface of footboard 4 is provided with anti-skidding structure, anti-skidding structure is rubber gasket, the thickness of rubber gasket is 1.5cm, just the upper surface of rubber gasket has anti-skidding pattern.
According to the telescopic ladder of the embodiment, in the use process, if a user at the top of the ladder needs to use articles (such as building installation materials, installation tools and the like) on the ground, the articles on the ground can be lifted to a high place by shaking the shaking handle of the pulley for use, and repeated climbing and climbing down are not needed; moreover, through the movable wheels, on one hand, the supporting point at the bottom of the cat ladder can be increased, the stability of the cat ladder is improved, and on the other hand, the handrail component is pushed, so that the whole cat ladder can slide under the action of the movable wheels, and the cat ladder can be conveniently moved; in addition, through the antiskid structure that sets up on the footboard for the user can stand on the footboard more steadily, and can avoid the user to take place to step on the slip accident in-process about climbing the ladder.
Example 3
As shown in fig. 1 and 2, the telescopic ladder comprises a first handrail component 1 and a second handrail component 2 which are symmetrically arranged with each other (after being stretched, the first handrail component 1 and the second handrail component 2 respectively comprise a plurality of section bars 3, two adjacent section bars 3 are in telescopic connection, each section bar 3 is correspondingly provided with a pedal 4, a pulley 5 is arranged on the top section bar of the second handrail component 2, one side of the pulley 5 is provided with a shaking handle 51, a rope 52 is arranged in the pulley 5, one end of the rope 52 is connected with a storage barrel 53, and the pulley 5 is arranged on the top section bar through a support frame 6; the two-way lifting device is characterized in that support rods 7 are arranged on bottom section rods of the first support rod assembly 1 and the second support rod assembly 2, one end of each support rod 7 is connected with the bottom section rod, the other end of each support rod 7 is connected with a movable wheel 8, a brake structure 9 is arranged on each movable wheel 8, and each support rod 7 is connected with the bottom section rod in a hinged mode; the upper surface of footboard 4 is provided with anti-skidding structure, anti-skidding structure is rubber gasket, rubber gasket's thickness is 1.5cm, just rubber gasket's upper surface has anti-skidding pattern, anti-skidding pattern can be the profile of sole shape and have a plurality of protruding lines.
According to the telescopic ladder of the embodiment, in the use process, if a user at the top of the ladder needs to use articles (such as building installation materials, installation tools and the like) on the ground, the articles on the ground can be lifted to a high place by shaking the shaking handle of the pulley for use, and repeated climbing and climbing down are not needed; moreover, through the movable wheels, on one hand, the supporting point at the bottom of the cat ladder can be increased, the stability of the cat ladder is improved, and on the other hand, the handrail component is pushed, so that the whole cat ladder can slide under the action of the movable wheels, and the cat ladder can be conveniently moved; in addition, through the antiskid structure that sets up on the footboard for the user can stand on the footboard more steadily, and can avoid the user to take place to step on the slip accident in-process about climbing the ladder.
The preferred embodiments of the present utility model have been described in detail above, but the present utility model is not limited thereto. Within the scope of the technical idea of the utility model, a number of simple variants of the technical solution of the utility model are possible, including combinations of the individual technical features in any other suitable way, which simple variants and combinations should likewise be regarded as being disclosed by the utility model, all falling within the scope of protection of the utility model.
Claims (7)
1. The telescopic ladder for building installation is characterized by comprising a first handrail component (1) and a second handrail component (2) which are symmetrically arranged, wherein each first handrail component (1) and each second handrail component (2) comprise a plurality of section bars (3), every two adjacent section bars (3) are in telescopic connection, each section bar (3) is correspondingly provided with a pedal (4), a pulley (5) is arranged on the top section bar of each first handrail component (1) and/or each second handrail component (2), and one side of each pulley (5) is provided with a shaking handle (51);
a supporting rod (7) is arranged on the bottom section rod of the first handrail component (1) and the second handrail component (2), one end of the supporting rod (7) is connected with the bottom section rod, and the other end of the supporting rod is connected with a movable wheel (8);
an anti-skid structure is arranged on the upper surface of the pedal (4);
the anti-skid structure is a rubber gasket.
2. Telescopic ladder for building installation according to claim 1, characterized in that ropes (52) are arranged in the pulleys (5).
3. Telescopic ladder for building installation according to claim 2, characterized in that one end of the rope (52) is connected with a storage tub (53).
4. A telescopic ladder for building installation according to any one of claims 1-3, characterized in that the pulley (5) is mounted on the top bar by means of a support frame (6).
5. Telescopic ladder for building installation according to claim 1, characterized in that the mobile wheels (8) are provided with braking structures (9).
6. Telescopic ladder for building installation according to claim 1, characterized in that the support bar (7) is connected to the bottom section bar by means of a hinge.
7. The telescopic ladder stand for building installation according to claim 1, wherein the thickness of the rubber gasket is 0.5-2cm, and the upper surface of the rubber gasket has an anti-slip pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320401572.5U CN219638757U (en) | 2023-03-06 | 2023-03-06 | Telescopic cat ladder for building installation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320401572.5U CN219638757U (en) | 2023-03-06 | 2023-03-06 | Telescopic cat ladder for building installation |
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| Publication Number | Publication Date |
|---|---|
| CN219638757U true CN219638757U (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320401572.5U Active CN219638757U (en) | 2023-03-06 | 2023-03-06 | Telescopic cat ladder for building installation |
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| Country | Link |
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| CN (1) | CN219638757U (en) |
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- 2023-03-06 CN CN202320401572.5U patent/CN219638757U/en active Active
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