CN218537731U - Positive handstand dual-purpose pump and bottle that has it - Google Patents
Positive handstand dual-purpose pump and bottle that has it Download PDFInfo
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- CN218537731U CN218537731U CN202222901610.1U CN202222901610U CN218537731U CN 218537731 U CN218537731 U CN 218537731U CN 202222901610 U CN202222901610 U CN 202222901610U CN 218537731 U CN218537731 U CN 218537731U
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Abstract
The utility model discloses a positive handstand dual-purpose pump, including cylinder, cylinder sleeve, have along radial extension and not communicate first passageway and second passageway, the cylinder is installed cylinder sleeve top and its lower extreme intercommunication the second passageway, the dilatation mouth sets up cylinder sleeve in the upper portion of first passageway, the ball sealer is restricted in the activity in the dilatation mouth, and through the dead weight to the shutoff of first passageway, tee bend spare is installed below the cylinder sleeve, can with tee bend spare lower part region with first passageway and second passageway switch on each other, pump liquid subassembly is installed in the cylinder for with the medium through tee bend spare, second passageway input to in the cylinder in proper order, or export the medium in the cylinder; the utility model discloses can solve the pump head and can not pump out feed liquid in the bottle when the bottle stands upside down, have the problem of certain use limitation.
Description
Technical Field
The utility model relates to a pump head technical field, concretely relates to just stand upside down dual-purpose pump has its bottle.
Background
In daily life, shampoo, shower gel, liquid detergent and the like are often used, and in thick liquid, the liquid is pumped out of a bottle body by pressing a piston rod on a pump head.
However, the pump head usually adopts a single suction channel to suck the feed liquid inside the bottle body, and when the feed liquid in the bottle body is less and needs to be inverted for use, the existing pump head cannot pump the feed liquid inside the bottle body to the outside, so that certain limitation exists.
In view of this, this application provides one kind can be when the bottle just stands or handstand the pump head that the homoenergetic extracted the feed liquid.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving above-mentioned technical problem, the pump head can not pump out feed liquid in the bottle when the bottle stands upside down promptly, has certain use limitation.
In a first aspect, the utility model provides a just stand upside down dual-purpose pump, including the cylinder, just stand upside down dual-purpose pump still includes:
a cylinder sleeve having a first passage and a second passage which extend in a radial direction and are not communicated with each other, the cylinder being installed above the cylinder sleeve and having a lower end communicated with the second passage,
the expansion opening is arranged at the upper part of the first channel of the cylinder sleeve,
the sealing ball is limited to move in the expansion port and plugs the first channel through self weight,
the three-way piece is arranged below the cylinder sleeve and can mutually conduct the lower area of the three-way piece with the first channel and the second channel,
and the liquid pumping assembly is arranged in the cylinder and used for inputting media into the cylinder through the three-way piece and the second channel in sequence or outputting the media in the cylinder.
In a preferred embodiment of the above-described reversible pump, the pump liquid assembly includes:
a sealing ring fixedly connected with the inner side of the upper opening part of the cylinder,
a valve plate bridged at the lower opening part inside the cylinder and used for opening or closing the cylinder,
the connecting rod is movably arranged in the sealing ring, the upper end of the connecting rod extends out of the cylinder, the lower end of the connecting rod is positioned in the cylinder,
the needle valve is arranged at the bottom of the connecting rod, the needle valve and the connecting rod are radially provided with outflow channels which are mutually communicated, the side wall of the lower part of the needle valve is provided with a feed inlet which is communicated with the outflow channels,
the piston is arranged between the needle valve and the sealing ring and is movably arranged in the cylinder along with the connecting rod and the needle valve,
and the spring is arranged between the sealing ring and the connecting rod, applies spring force to the connecting rod, enables the connecting rod to be outwards pressed to a static position relative to the cylinder, and enables the piston to abut against the sealing ring and the needle valve by means of the spring force so as to block the feed port.
In a preferred technical scheme of the positive and inverted dual-purpose pump, a scavenging port is formed in the side wall of the upper part of the cylinder.
In a preferred technical scheme of the positive and inverted dual-purpose pump, a groove for accommodating the sealing ball is formed at the joint of the expansion port and the first channel.
In a preferred technical solution of the above positive and negative inverted dual-purpose pump, the pump further comprises an output head, the output head has a pressing portion and a fixing portion, the pressing portion is mounted on the connecting rod, the pressing portion has an output port for connecting the outflow channel, and the fixing portion is used for connecting with a container.
In the preferable technical scheme of the positive and inverted dual-purpose pump, the bottom of the tee piece is provided with a suction pipe.
In a second aspect, the present invention further provides a bottle comprising a bottle body and any one of the above-mentioned positive and negative handstand dual-purpose pumps.
In a preferred technical solution of the above bottle, the cylinder is installed at the mouth of the bottle body, and the fixing portion is screwed to the mouth of the bottle body and presses the cylinder.
In the preferable technical scheme of the bottle, a sealing gasket is arranged between the air cylinder and the mouth part of the bottle body.
In the preferable technical scheme of the bottle, the upper part of the bottle body is provided with the cover body in a matching way.
The beneficial effects of the utility model are that, this application is just when standing, the ball sealer is with the shutoff of first passageway in order to realize that the inside feed liquid of container is attracted the entering cylinder in piston below space through installation head and second passageway, when falling, the ball sealer is no longer with the shutoff of first passageway in order to realize getting into the cylinder in piston top space with the feed liquid in the container through dilatation mouth, installation head and second passageway are attracted, this device ground application scope has been improved effectively, and the structure is mostly the concatenation formula, do benefit to the processing production, possess higher ground practicality.
Drawings
FIG. 1 is a front view of a positive and negative inverted dual-purpose pump;
FIG. 2 is a schematic view of a cylinder and pumping assembly;
FIG. 3 is a schematic view of the connection of the cylinder with the cylinder sleeve, the sealing ball and the tee;
FIG. 4 is a schematic view of the piston with connecting rod and needle valve;
FIG. 5 is an exploded view of the reversible pump and bottle;
fig. 6 is a schematic structural diagram of the liquid pumping assembly.
In the figure:
a cylinder 1, an upper opening 101, a lower opening 102;
the cylinder sleeve 2, the first channel 21, the second channel 22 and the expansion port 23;
a sealing ball 3;
a three-way piece 4, a three-way upper piece 41, a connecting head 411, a three-way lower piece 42 and a mounting head 421;
a sealing ring 51, a valve plate 52, a connecting rod 53, a shielding part 531, a needle valve 54, an annular bulge 541, an outflow channel 55, a feed inlet 56, a piston 57, an annular flange 571 and a spring 58;
a ventilation port 6;
a groove 7;
an output head 8, a pressing portion 81, an output port 811, and a fixing portion 82;
a suction pipe 9;
a bottle body 11;
a sealing gasket 12;
a cover 13.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "connected" and "connected" in the description of the present invention are to be construed broadly and may be, for example, fixedly connected, detachably connected or integrally connected. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 5, the utility model discloses a positive handstand dual-purpose pump includes cylinder 1, positive handstand dual-purpose pump still includes:
a cylinder sleeve 2 having a first passage 21 and a second passage 22 extending in a radial direction without communicating with each other, the cylinder 1 being installed above the cylinder sleeve 2 and having a lower end communicating with the second passage 22,
an expansion opening 23 provided in an upper portion of the first passage 21 of the cylinder liner 2,
a sealing ball 3 which is limited to move in the expansion opening 23 and seals the first channel 21 by self-weight,
a three-way member 4 installed below the cylinder liner 2 to communicate a lower region of the three-way member 4 with the first passage 21 and the second passage 22,
and the liquid pumping assembly is arranged in the cylinder 1 and used for inputting media into the cylinder 1 through the three-way piece 4 and the second channel 22 in sequence or outputting the media in the cylinder 1.
The pumping liquid assembly includes:
a sealing ring 51 fixedly connected to the inner side of the upper opening part 101 of the cylinder 1,
a valve plate 52 bridging the lower opening part 102 inside the cylinder 1 for opening or closing the cylinder 1,
a connecting rod 53 movably installed in the sealing ring 51, the upper end of which extends out of the cylinder 1 and the lower end of which is located inside the cylinder 1,
the needle valve 54 is installed at the bottom of the connecting rod 53, the needle valve 54 and the connecting rod 53 are provided with outflow passages 55 which are communicated with each other along the radial direction, the side wall of the lower part of the needle valve 54 is provided with a feed inlet 56, the feed inlet 56 is communicated with the outflow passages 55,
a piston 57 installed between the needle valve 54 and the sealing ring 51 and movably disposed in the cylinder 1 along with the connecting rod 53 and the needle valve 54,
and the spring 58 is arranged between the sealing ring 51 and the connecting rod 53, applies spring force to the connecting rod 53, presses the connecting rod 53 outwards relative to the cylinder 1 to a rest position, and enables the piston 57 to abut against the sealing ring 51 and the needle valve 54 by means of the spring force so as to seal the feed port 56.
Referring to fig. 1-4 and fig. 6, the cylinder 1 is in a needle tube shape, the cylinder 1 has an upper mouth part 101 and a lower mouth part 102, a sealing ring 51 is installed inside the upper mouth part 101, the valve plate 52 is bridged at the lower mouth part 102 inside the cylinder 1, a device for connecting the valve plate 52 and the cylinder 1 is made of rubber material and has a certain elasticity, the valve plate 52 can seal or open the lower mouth part 102, a connecting rod 53 is movably connected inside the sealing ring 51, one end of the connecting rod 53 is located inside the cylinder 1, the other end is located outside the cylinder 1, a needle valve 54 is fixedly installed inside the lower end of the connecting rod 53, a piston 57 is movably installed between the sealing ring 51 and the needle valve 54, an annular bulge 541 is arranged on the lower peripheral side of the needle valve 54, the annular bulge 541 limits the piston 57 between the sealing ring 51 and the needle valve 54, and an annular flange 571 is arranged inside the piston 57, the inner diameter of the annular flange 571 is smaller than the outer diameter of the connecting rod 53, so that when the connecting rod 53 moves downwards, the lower end of the connecting rod 53 can abut against the annular flange 571 to move the piston 57 downwards, the needle valve 54 and the connecting rod 53 are radially and respectively provided with an outflow channel 55 which are communicated with each other, the side wall of the lower part of the needle valve 54 is provided with a feed port 56 communicated with the outflow channel 55, the upper part of the sealing ring 51 is provided with a containing groove, the peripheral side of the upper part of the connecting rod 53 is provided with a shielding part 531, a spring 58 is installed in the containing groove, the other end of the spring 58 abuts against the shielding part 531, the connecting rod 53 extends out of the cylinder 1 to a static position under the action of the spring force, the upper part of the piston 57 can abut against the sealing ring 51 under the spring force, and the lower part of the piston 57 abuts against the annular bulge 541 on the needle valve 54, so that the feed port 56 is blocked by the piston 57.
Referring to fig. 2, the cylinder sleeve 2 has a first channel 21 and a second channel 22 extending through in a radial direction, the first channel 21 and the second channel 22 are not communicated with each other, the cylinder sleeve 2 has an expansion port 23 above the first channel 21, the inner diameter of the expansion port 23 is larger than that of the first channel 21, a sealing ball 3 is movably installed in the expansion port 23, the diameter of the sealing ball 3 is larger than that of the first channel 21, the cylinder 1 is installed at the position of the cylinder sleeve 2 in the second channel 22, a lower opening portion 102 of the cylinder 1 is communicated with the second channel 22, and the circumferential side of the cylinder 1 extends into the first channel 21, so that the sealing ball 3 is limited in the expansion port 23.
Alternatively, a baffle may be provided at the expansion port 23 above the sealing ball 3 to seal the first passage 21.
Referring to fig. 2, the three-way element 4 is composed of a three-way upper element 41 and a three-way lower element 42, the three-way lower element 42 is installed inside the three-way upper element 41, the upper part of the three-way upper element 41 is provided with two connectors 411 extending along the radial direction, the two connectors 411 are respectively connected with the first channel 21 and the second channel 22 of the cylinder sleeve 2, the lower surface of the three-way lower element 42 is provided with a mounting head 421 extending along the radial direction, and the mounting head 421 and the two connectors 411 are mutually communicated.
Referring to fig. 1-4, in the initial state of the device, the sealing ball 3 blocks the first channel 21 by its own weight, the lower part of the sealing ring 51 abuts against the piston 57 under the action of the spring force, the lower part of the piston 57 abuts against the annular protrusion 541 of the needle valve 54, the feed port 56 is in a blocked state, and the valve sheet 52 blocks the lower opening 102 of the cylinder 1.
When the device is hermetically mounted on a container and is in an upright state, the feed port 56 is exposed to a space below the piston 57 by pressing the connecting rod 53 (the outflow channel 55 is not blocked during pressing), the lower end of the connecting rod 53 abuts against the annular flange 571 of the piston 57 along with downward movement of the connecting rod 53, so that the connecting rod 53 drives the piston 57 to move downward, the spring 58 compresses, the piston 57 presses the cylinder 1 to the space below the piston 57, the valve sheet 52 blocks the lower opening 102 of the cylinder 1, the pressure inside the space below the piston 57 of the cylinder 1 is greater than the pressure inside the outflow channel 55, the feed liquid in the space below the piston 57 of the cylinder 1 flows out through the outflow channel 55 through the feed port 56, and the first channel 21 is still sealed by the sealing ball 3;
the pressure applied to the connecting rod 53 is stopped, the connecting rod 53 drives the needle valve 54 to move upwards relative to the piston 57 under the action of the spring 58, after the lower end of the piston 57 contacts the annular protrusion 541 on the lower peripheral side of the needle valve 54, the connecting rod 53 drives the piston 57 to move upwards synchronously, after the feed port 56 is blocked by the piston 57 and the piston 57 moves upwards, the space below the piston 57 of the cylinder 1 is in a negative pressure state, under the action of negative pressure suction, the valve plate 52 does not block the feed port 56 of the cylinder 1 any more, so that the feed liquid in the container is sucked into the space below the piston 57 of the cylinder 1 through the connecting head 411 by the mounting head 421, until the connecting rod 53 is completely reset, the valve plate 52 resets, the lower port 102 of the cylinder 1 is blocked by the valve plate 52 again, and the first channel 21 is blocked by the sealing ball 3 in the above process.
Referring to fig. 1-4, when the device is in an inverted state, the sealing ball 3 is no longer blocked by the first channel 21 under the action of its own weight, and at the same time, the sealing ball 3 is always located in the expansion port 23 by the limitation of the cylinder 1, at this time, the connecting rod 53 is pressed (the outflow channel 55 is not blocked when being pressed), so that the feed port 56 is exposed to the space above the piston 57 of the cylinder 1, and as the connecting rod 53 moves upwards, the end of the connecting rod 53 abuts against the annular flange 571 of the piston 57, so that the connecting rod 53 drives the piston 57 to move upwards, at this time, the spring 58 is compressed, the piston 57 presses the cylinder 1 to the space above the piston 57, and the lower port 102 of the cylinder 1 is blocked by the valve plate 52, the internal pressure of the cylinder 1 to the space above the piston 57 is greater than the internal pressure of the outflow channel 55, so that the feed liquid in the space below the piston 57 of the cylinder 1 flows out through the feed port 56 via the outflow channel 55;
the pressure applied to the connecting rod 53 is stopped, the connecting rod 53 drives the needle valve 54 to move downwards relative to the piston 57 under the action of the spring 58, after the end of the piston 57 contacts the annular protrusion 541 on the peripheral side of the needle valve 54, the connecting rod 53 drives the piston 57 to move downwards synchronously, after the feed port 56 is blocked by the piston 57 and moves downwards along with the piston 57, the space above the piston 57 of the cylinder 1 is in a negative pressure state, under the action of negative pressure suction, the valve sheet 52 does not block the feed port 56 of the cylinder 1 any more, so that the feed liquid in the container is sucked into the space above the piston 57 of the cylinder 1 through the expansion port 23 and the two connectors 411 until the connecting rod 53 is completely reset, the valve sheet 52 resets, the valve sheet 52 blocks the lower port portion 102 of the cylinder 1 again, and the sealing ball 3 does not block the first channel 21 all the time in the above process.
This application is through setting up when just, ball sealer 3 is with the shutoff of first passageway 21 in order to realize that the inside feed liquid of container is attracted in piston 57 below space in getting into cylinder 1 through installation head 421 and second passageway 22, when standing upside down, ball sealer 3 no longer with the shutoff of first passageway 21 in order to realize with the container in feed liquid through dilatation mouth 23, installation head 421 and second passageway 22 are attracted and get into in piston 57 top space in cylinder 1, this device ground application scope has been improved effectively, and the structure is mostly the concatenation formula, do benefit to the processing production, possess higher ground practicality.
In one or more embodiments, the upper side wall of the cylinder 1 is provided with a scavenging port 6.
Referring to fig. 3, in the initial state of the device when it is upright or inverted, the side of the piston 57 is sealed after ventilation, after the piston 57 is driven by the connecting rod 53, the piston 57 does not seal the ventilation port 6 any more, and the ventilation port 6 is arranged to ensure that the space above the piston 57 of the cylinder 1 is always in the normal pressure state, which is beneficial to the reset of the connecting rod 53.
In one or more embodiments, the junction of the expansion port 23 and the first passage 21 has a groove 7 that receives the sealing ball 3.
Referring to fig. 3, the section of the groove 7 is in an inverted cone shape, the sealing ball 3 can be blocked by the first channel 21 to the maximum extent through the arrangement, and meanwhile, the occupied space of the device can be reduced, and the device has practicability. Alternatively, the groove 7 may be curved.
In one or more embodiments, the device further comprises an output head 8, the output head 8 having a pressing portion 81 and a fixing portion 82, the pressing portion 81 being mounted on the connecting rod 53, the pressing portion 81 having an output 811 for connecting the outflow channel 55, the fixing portion 82 being for connecting with a container.
Referring to fig. 5, the pressing portion 81 can move up and down relative to the fixing portion 82, the connecting rod 53 is mounted on the lower surface of the pressing portion 81, and the outflow channel 55 of the connecting rod 53 communicates with the output port 811; the connecting rod 53 can be effectively pressed by the pressing part 81, the outflow channel 55 is prevented from being blocked when the pressing is carried out, and the cylinder 1 is conveniently installed on the container by the fixing part 82.
In one or more embodiments, a suction pipe 9 is installed at the bottom of the tee 4.
Referring to fig. 3, in particular, the suction pipe 9 is installed inside the mounting head 421 of the three-way lower member 42, and the suction pipe 9 extends to the lower part inside the container, so as to absorb the feed liquid inside the container to the maximum extent and avoid waste of the feed liquid inside the container.
In addition, the utility model discloses still provide a bottle, including bottle 11 and above-mentioned arbitrary just handstand dual-purpose pump of arbitrary.
In one or more embodiments, the cylinder 1 is installed at the mouth of the bottle 11, and the fixing portion 82 is screwed on the mouth of the bottle 11 and presses the cylinder 1.
Referring to fig. 5, the positive and inverted dual-purpose pump is installed in the bottle 11 through the above arrangement, and the installation is simple, and the practicability is high.
In one or more embodiments, a sealing gasket 12 is arranged between the cylinder 1 and the mouth of the bottle body 11.
Referring to fig. 5, the sealing gasket 12 is disposed between the cylinder 1 and the mouth of the bottle 11 to reduce the possibility of the feed liquid inside the bottle 11 flowing out through the mouth of the bottle 11.
In one or more embodiments, a cover 13 is fittingly installed on the upper portion of the bottle body 11.
Referring to fig. 5, the cover 13 is sleeved on the bottle 11 to avoid the problem that the connecting rod 53 is touched by mistake when not in use, so that the liquid inside the bottle 11 flows out.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (10)
1. The utility model provides a just stand upside down dual-purpose pump, includes the cylinder, its characterized in that just stands upside down dual-purpose pump still includes:
a cylinder sleeve having a first passage and a second passage which extend in a radial direction and are not communicated with each other, the cylinder being installed above the cylinder sleeve and having a lower end communicated with the second passage,
the expansion opening is arranged at the upper part of the first channel of the cylinder sleeve,
the sealing ball is limited to move in the expansion port and plugs the first channel through self weight,
the three-way piece is arranged below the cylinder sleeve and can mutually conduct the lower area of the three-way piece with the first channel and the second channel,
and the liquid pumping assembly is arranged in the cylinder and used for inputting media into the cylinder through the three-way piece and the second channel in sequence or outputting the media in the cylinder.
2. The dual-purpose pump for positive and negative inversion according to claim 1, wherein: the pumping liquid assembly includes:
a sealing ring fixedly connected with the inner side of the upper opening part of the cylinder,
a valve plate bridged at the lower opening part inside the cylinder and used for opening or closing the cylinder,
the connecting rod is movably arranged in the sealing ring, the upper end of the connecting rod extends out of the cylinder, the lower end of the connecting rod is positioned in the cylinder,
the needle valve is arranged at the bottom of the connecting rod, the needle valve and the connecting rod are radially provided with outflow channels which are mutually communicated, the side wall of the lower part of the needle valve is provided with a feed inlet which is communicated with the outflow channels,
the piston is arranged between the needle valve and the sealing ring and is movably arranged in the cylinder along with the connecting rod and the needle valve,
and the spring is arranged between the sealing ring and the connecting rod, applies spring force to the connecting rod, enables the connecting rod to be outwards pressed to a static position relative to the cylinder, and enables the piston to abut against the sealing ring and the needle valve by means of the spring force so as to block the feed port.
3. The dual-purpose pump for positive and negative inversion according to claim 2, wherein: and the side wall of the upper part of the cylinder is provided with a scavenging port.
4. The dual-purpose pump for positive and negative inversion according to claim 1, wherein: the joint of the expansion port and the first channel is provided with a groove for accommodating the sealing ball.
5. A positive and negative inverted dual-purpose pump according to claim 3, wherein: still include the output head, the output head has presses splenium and fixed part, press the splenium to install on the connecting rod, press the splenium to have and be used for connecting outflow channel's delivery outlet, the fixed part is used for being connected with the container.
6. The dual-purpose pump for positive and negative inversion according to claim 1, wherein: and a suction pipe is arranged at the bottom of the three-way piece.
7. A bottle, characterized by: comprising a bottle body and the positive and negative inverted dual-purpose pump of claim 5.
8. A bottle as claimed in claim 7, wherein: the cylinder is installed at the bottle mouth, the fixed part is screwed on the bottle mouth and presses the cylinder.
9. A bottle as claimed in claim 8, wherein: and a sealing gasket is arranged between the cylinder and the opening part of the bottle body.
10. A bottle according to claim 7, wherein: the upper part of the bottle body is provided with a cover body in a matching way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222901610.1U CN218537731U (en) | 2022-11-01 | 2022-11-01 | Positive handstand dual-purpose pump and bottle that has it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222901610.1U CN218537731U (en) | 2022-11-01 | 2022-11-01 | Positive handstand dual-purpose pump and bottle that has it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218537731U true CN218537731U (en) | 2023-02-28 |
Family
ID=85281536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222901610.1U Active CN218537731U (en) | 2022-11-01 | 2022-11-01 | Positive handstand dual-purpose pump and bottle that has it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218537731U (en) |
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2022
- 2022-11-01 CN CN202222901610.1U patent/CN218537731U/en active Active
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