CN115693136B - Protective box for communication antenna joint - Google Patents
Protective box for communication antenna joint Download PDFInfo
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- CN115693136B CN115693136B CN202211700981.1A CN202211700981A CN115693136B CN 115693136 B CN115693136 B CN 115693136B CN 202211700981 A CN202211700981 A CN 202211700981A CN 115693136 B CN115693136 B CN 115693136B
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Abstract
The invention provides a communication antenna joint protection box, belonging to the technical field of joint protection, comprising: the sealing device comprises a first shell, a second shell, a sealing film, a grounding wire, a sealing material and a positioning piece. The second shell is hinged on the first shell, and the first shell and the second shell are closed to contain the antenna connector. One side of the sealing membrane is positioned in the first shell, and the other side of the sealing membrane extends into the second shell and is positioned in the second shell. The ground wire is arranged on the sealing film, and the sealing film is used for wrapping the joint and enabling the ground wire to abut against the joint through the closed swinging of the first shell and the second shell. The sealing material is filled in the sealing film and used for isolating the joint from the outside. The positioning piece is connected to the first shell and used for positioning the second shell on the first shell. The first shell and the second shell of the communication antenna joint protection box provided by the invention can wrap the joint by the sealing film through one-time movement, and the grounding operation is completed, so that the operation is convenient, the sealing performance is better, and the service life is longer.
Description
Technical Field
The invention belongs to the technical field of joint protection, and particularly relates to a communication antenna joint protection box.
Background
The antenna is a converter which converts the guided wave propagated on the transmission line into the electromagnetic wave propagated in the unbounded medium or vice versa, and the communication antenna joint protection box is a device for ensuring the safe and reliable use of the equipment.
The existing protection box for the communication antenna joint is simple in structure, the antenna joint is wrapped and fixed, so that the effect of protecting the antenna joint is achieved, however, due to the fact that the structure is single and thin, a gap is easily generated between the protection box and an antenna, the internal sealing performance of the protection box is poor, and external dust or dirt enters the protection box and is adsorbed at the joint, and the protection effect of the protection box is influenced. More importantly, the communication antenna circuit is more simultaneously, and current protective sheath only can singly protect antenna terminal, can't be applied to different cable antenna cross-sections, and is different facing new and old circuit cable cross-section, can't be dispatched and used the field or be not convenient for operate.
Disclosure of Invention
The invention aims to provide a communication antenna joint protection box, and aims to solve the problems that the application scene of the protection box is single and the applicability is poor.
In order to achieve the purpose, the invention adopts the technical scheme that: providing a communications antenna connector protection kit comprising:
a first housing;
the second shell is hinged on the first shell, and the first shell and the second shell are closed and used for accommodating an antenna connector;
a sealing membrane, one side of which is positioned in the first shell and the other side of which extends to the second shell and is positioned in the second shell;
the grounding wire is arranged on the sealing film, and the sealing film is used for wrapping a joint and enabling the grounding wire to abut against the joint by means of closed swinging of the first shell and the second shell;
the sealing material is filled in the sealing film and used for isolating the joint from the outside;
and the positioning piece is connected to the first shell and used for positioning the second shell on the first shell.
In a possible implementation manner, the first shell and the second shell are internally provided with limit strips in a detachable mode, and two side edges of the sealing membrane are respectively positioned on the limit strips on the corresponding side.
In a possible implementation manner, the first shell and the second shell are respectively provided with a clamping groove which is matched with the limiting strip in an inserting manner, and the opening directions of the two clamping grooves are obtuse angles.
In a possible implementation manner, blocking strips are arranged in the first shell and the second shell, the two blocking strips are respectively arranged on the side edges, close to the two limiting strips, of the two limiting strips, and the blocking strips abut against the bottom surface of the sealing membrane; and the two blocking strips move oppositely by means of the swinging of the first shell and the second shell and are used for blocking the two side edges of the sealing film and forming a cavity.
In a possible implementation manner, a first pipe is arranged on the second shell, and the first pipe is communicated with the cavity and used for injecting the sealing material into the cavity.
In a possible implementation manner, the blocking strip abuts against the inner side face of the sealing membrane, and the grounding wire is arranged on the outer side face of the sealing membrane; the blocking strip avoids the first pipe.
In one possible embodiment, the ground wire is bonded to the sealing film.
In a possible implementation manner, an injection port is formed in the first shell, and the injection port is used for injecting filler into a space surrounded by the first shell, the second shell and the sealing film.
In a possible implementation manner, one end of the positioning element is positioned on the first housing, the other end of the positioning element is in threaded connection with the second housing, and the positioning element penetrates through the first pipe to plug the first pipe.
In a possible implementation manner, the first housing and the second housing are slidably provided with a clamping strip, and the clamping strip is matched with the positioning piece to close the first housing and the second housing.
The communication antenna joint protection box provided by the invention has the beneficial effects that: compared with the prior art, the second shell of the communication antenna joint protection box is hinged on the first shell, one side of the sealing membrane is positioned in the first shell, and the other side of the sealing membrane extends to the second shell and is positioned in the second shell. And the sealing film is provided with a grounding wire, meanwhile, the sealing film is filled with a sealing material, and in order to position the first shell on the second shell, the first shell is connected with a positioning piece.
In practical application, the antenna joint can be accommodated when the first shell and the second shell are closed, the sealing film can wrap the joint in the process of swinging the first shell relative to the second shell, and after the joint is wrapped, the grounding wire can be in contact with the joint so as to lead static electricity and the like on the joint out, and finally the joint is isolated from the outside through the sealing material.
In this application, first casing and second casing once only move and just can make the seal membrane will connect the parcel to accomplished the ground connection operation, and the sealing material of packing can keep connecting with external isolated state, therefore whole protection box is convenient for operate, and the leakproofness is better, and life is longer.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a communication antenna connector protection box according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a communication antenna connector protection box according to a second embodiment of the present invention when closed;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is a schematic connection diagram of the card strip, the first housing and the second housing according to the third embodiment of the present invention.
In the figure: 1. a first housing; 2. a second housing; 3. sealing the film; 4. a first tube; 5. a limiting strip; 6. a card slot; 7. a ground line; 8. sealing materials; 9. a filler; 10. an injection port; 11. clamping the strip; 12. a positioning member.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 4, a communication antenna connector protection box according to the present invention will be described. Communication antenna connects protection box includes: the sealing device comprises a first shell 1, a second shell 2, a sealing film 3, a grounding wire 7, a sealing material 8 and a positioning piece 12. The second housing 2 is hinged to the first housing 1, and the first housing 1 and the second housing 2 are closed for accommodating the antenna connection. The sealing film 3 is positioned in the first housing 1 on one side and extends to the second housing 2 on the other side and is positioned in the second housing 2. The ground wire 7 is provided on the sealing film 3, and the sealing film 3 wraps the joint by the closed swing of the first case 1 and the second case 2 and abuts the ground wire 7 against the joint. The sealing compound 8 is filled in the sealing film 3 for sealing the joint from the outside. The positioning member 12 is attached to the first housing 1 for positioning the second housing 2 on the first housing 1.
The beneficial effects of the communication antenna joint protection box provided by the invention are as follows: compared with the prior art, the second shell 2 in the communication antenna joint protection box is hinged on the first shell 1, one side of the sealing film 3 is positioned in the first shell 1, and the other side extends to the second shell 2 and is positioned in the second shell 2. The seal film 3 is provided with a ground wire 7, the seal film 3 is filled with a sealing material 8, and the first case 1 is connected to a spacer 12 for positioning the first case 1 on the second case 2.
In practical applications, the antenna terminal can be accommodated when the first casing 1 and the second casing 2 are closed, the sealing film 3 can wrap the terminal during the swinging of the first casing 1 relative to the second casing 2, and the grounding wire 7 can contact the terminal after the terminal is wrapped so as to lead out static electricity and the like on the terminal, and finally the terminal is isolated from the outside through the sealing material 8.
In this application, first casing 1 and 2 motions of second casing just can make seal membrane 3 wrap up with connecting to accomplished the ground connection operation, and the sealant 8 of filling can keep connecting with external isolated state, therefore the operation of being convenient for of whole protection box, and the leakproofness is better, and life is longer.
With the rapid development of urban electric power construction, more lines need to be carried in the existing underground pipe network, and the demand of the small-size intermediate joint is larger and larger. However, the intermediate joint of the traditional structure is large in design, high in cost, difficult to meet the current miniaturization requirement and difficult to install in order to meet the requirements of water resistance and mechanical performance in direct burial. Meanwhile, in the existing design, the design is not carried out on the secondary waterproof seal after the grounding wire 7 of the intermediate joint is led out, if the secondary waterproof seal at the outlet of the grounding wire 7 is not provided, when the cable runs, slight movement or vibration occurs, and water outside the shell easily enters the shell along the outlet of the grounding wire 7, so that the structural defect of the part becomes a weak point in the whole product, and the performance stability of the whole intermediate joint is influenced.
The power cable generally comprises a conductor core, an insulator and an outer sheath, wherein the medium-voltage power cable refers to a power cable with 35 kilovolts or less, the medium-voltage cable needs to bear the voltage of 35 kilovolts in the application and use process so that the quality requirement on a joint is higher, the medium-voltage cable needs to be produced by connecting two conductors in the production process, a joint is needed in the two cables, and in the operation process, the conductor core generates heat through current, and the cable insulator also generates heat loss under the action of alternating voltage; when the cable is running at full load, the core temperature itself is already high, and if the cable is overloaded, the core temperature further rises and exceeds the allowable temperature, the cable insulator will age more rapidly, and thermal breakdown of the insulation medium may occur. The cable is laid in sections, the connecting parts of two sections of cables or two tail ends of the lines are connected by adopting cable joints to form a continuous power grid line, in a power cable transmission power grid, the contact resistance is increased due to poor cable joints, and a large amount of heat and combustible gas are generated by the aging of an insulating sheath or the partial discharge of the cable, so that a serious fire disaster is easily generated.
In some embodiments of the protective box for a communication antenna connector provided by the present application, please refer to fig. 1, fig. 2, and fig. 3, a limiting strip 5 is detachably mounted in each of the first housing 1 and the second housing 2, and two side edges of the sealing film 3 are respectively positioned on the limiting strip 5 on the corresponding side.
It should be noted that the material of the sealing membrane 3 is different from that of the first casing 1 and the second casing 2, and more importantly, the sealing membrane 3 is always in a tensile state under the action of the first casing 1 and the second casing 2, because only then, the joint can be effectively wrapped, and the entry of external air and the like can be prevented. In addition, the sealing film 3 has a certain thickness, so that the connecting force between the side edge of the sealing film 3 and the corresponding shell is large, the common bonding is inconvenient to operate, and meanwhile, the stability is poor.
In order to solve the problem, firstly, two side edges of the sealing film 3 are respectively fixed on the limiting strips 5, connecting columns can be arranged on the two side edges of the sealing film 3, and mounting grooves matched with the connecting columns in an inserting mode are formed in the limiting strips 5. In practical application, the connecting column can be inserted from one side of the mounting groove. And can dismantle with the casing through spacing 5 and be connected, thereby can change the seal membrane 3 of different shapes and thickness according to the difference of joint and improve the suitability to removable component that corresponds when overhauing can, avoided the waste of material.
In some embodiments of the protection box for a communication antenna connector provided by the present application, please refer to fig. 1, fig. 2, and fig. 3, the first housing 1 and the second housing 2 are both provided with a slot 6 inserted and matched with the limiting strip 5, and the opening direction of the two slots 6 is an obtuse angle.
In order to realize dismantling the connection, all be provided with the draw-in groove 6 that is used for installing spacing strip 5 on first casing 1 and second casing 2 at first, after inserting spacing strip 5 in the draw-in groove 6 that corresponds, there is certain effort between draw-in groove 6's lateral wall and spacing strip 5, and this effort can prevent to a certain extent that spacing strip 5 from deviating from in draw-in groove 6 under the exogenic action.
And in order to guarantee the reliability that spacing 5 and draw-in groove 6 are connected, draw-in groove 6 on the first casing 1 extends to keeping away from second casing 2 direction, and draw-in groove 6 on the second casing 2 extends to keeping away from first casing 1 direction. The included angle of the opening directions of the two clamping grooves 6 is an obtuse angle.
In some embodiments of the protective box for the communication antenna connector provided by the present application, please refer to fig. 1, fig. 2, and fig. 3, the first housing 1 and the second housing 2 are both provided with a blocking strip, the two blocking strips are respectively located on the side edges where the two limiting strips 5 are close to each other, and the blocking strips abut against the bottom surface of the sealing film 3; the two sealing strips move oppositely by means of the swinging of the first shell 1 and the second shell 2 to seal two side edges of the sealing film 3 and form a cavity.
The shape of the sealing membrane 3 changes during the movement of the first housing 1 with respect to the second housing 2, the two sides of the sealing membrane 3 approaching each other and progressively wrapping the joint during the oscillation of the two housings. When the two shells are closed, the two sides of the sealing film 3 are required to abut against each other and the sealing material 8 in the sealing film can be prevented from being discharged from the gaps between the two sides.
First, the sealing film 3 is connected to the two limit strips 5, the sealing film 3 extends out from the limit strips 5, and in order that the cavity formed after the sealing is closed is in a relatively closed state, the sealing strips are integrally formed at the corresponding positions of the first shell 1 and the second shell 2, and the sealing strips are arranged on the inner side of the sealing film 3, namely the bottom surface of the sealing film 3.
The embodiment is that, after the first casing 1 and the second casing 2 are expanded, the sealing film 3 will abut against the sealing strip, i.e. there is a certain acting force on the sealing strip, and after the two casings are closed, the two sealing strips will simultaneously press the sealing film 3 on the corresponding side, i.e. the two sealing strips are distributed on both sides of the sealing film 3 after being attached, so as to form a relatively closed cavity in the sealing film 3.
In some embodiments of the protection box for a communication antenna connector provided by the present application, please refer to fig. 1 to 4, a first tube 4 is disposed on the second housing 2, and the first tube 4 is communicated with the cavity for injecting a sealing material 8 into the cavity.
If the sealing material 8 is put into the sealing membrane 3 before the first shell 1 and the second shell 2 are closed, the first shell 1 and the second pinching head are generally vertically installed during actual installation, so that the sealing material 8 falls off from the sealing membrane 3 under the action of self gravity and the like. Even if not dropping, also can not guarantee that sealing material 8 will be full of in the cavity of seal membrane 3.
For the above reasons, the sealant 8 is injected after the first and second cases 1 and 2 are closed, so that the sealant 8 fills the cavity. In order to achieve the above-mentioned effect, a first pipe 4 is provided on the second housing 2, and the first pipe 4 extends from the second housing 2 to above the blocking strip.
After the two shells are closed, by injecting the sealant 8 into the first tube 4, after the sealant 8 enters the cavity, the gas in the cavity is exhausted from the second tube, and the sealant 8 will gradually fill the cavity until the sealant 8 is exhausted from the second tube, which can prove that the cavity is full.
In some embodiments of the protective case for a communication antenna connector provided in the present application, please refer to fig. 1 and 2, the sealing strip abuts against the inner side of the sealing film 3, and the grounding wire 7 is disposed on the outer side of the sealing film 3; the plugging strip is arranged avoiding the first pipe 4.
In order to avoid the blocking strip from extruding and blocking the first pipe 4, a yielding groove for avoiding the first pipe 4 is formed in the blocking strip. The first tube 4 is pressed into the relief groove. And a second tube is provided on the second housing 2 above the first tube 4 for venting the gas in the chamber.
In some embodiments of the communications antenna connector protective case provided herein, referring to fig. 1 and 2, a ground wire 7 is bonded to a sealing film 3.
The grounding wire 7 can be bonded on the sealing film 3, more importantly, the grounding wire 7 is exposed outside, and the grounding wire 7 can be arranged along the length direction of the first shell 1 and the second shell 2, so that the problem that the grounding wire 7 is deformed or even broken due to the deformation of the sealing film 3 is avoided. In order to ensure that the grounding wires 7 can effectively contact the connector, the number of the grounding wires 7 can be multiple, and multiple grounding wires 7 are connected in series. Or an extension strip is arranged on the grounding wire 7 and arranged along the length direction of the grounding wire 7, and the surface area of the extension strip is larger, so that the contact of the joint is ensured.
In order to lead out electric energy, a ground post is provided on the first casing 1 or the second casing 2, the ground post is electrically connected to the ground line 7, and a lead is connected to the ground post on the outside to lead out static electricity or the like.
In some embodiments of the protective box for a communication antenna connector provided by the present application, please refer to fig. 1 and fig. 2, an injection port 10 is formed on the first housing 1, and the injection port 10 is used for injecting a filling material 9 into a space enclosed by the first housing 1, the second housing 2 and the sealing film 3.
In order to avoid the above problem, after the two shells are closed, the filling material 9 can be injected through the injection port 10 on the first shell 1, and the filling material 9 can fill the space enclosed by the first shell 1, the second shell 2 and the sealing film 3, so as to isolate the outside of the sealing film 3.
In some embodiments of the protection box for a communication antenna connector provided in the present application, please refer to fig. 4, one end of the positioning element 12 is positioned on the first housing 1, the other end is connected to the second housing 2 by a screw, and the positioning element 12 penetrates through the first tube 4 to plug the first tube 4.
The positioning element 12 may be a bolt, the cap of which abuts against the first housing 1 and which is in threaded connection with the second housing 2, wherein during the threaded connection a closed state between the two housings is ensured. The number of spacers 12 is therefore usually at least two, since the sealing compound 8 risks overflowing if the first tube 4 and the second tube are not plugged.
Therefore, the first pipe 4 and the second pipe penetrate through the threaded hole formed in the second shell 2 and used for being connected with the bolt, namely the first pipe 4 and the second pipe radially penetrate through the threaded hole along the threaded hole, when the bolt is installed, the bolt can extrude the first pipe 4 and the second pipe and move continuously along with the bolt until the first pipe 4 and the second pipe are plugged. With the above arrangement, the mounting of the bolts closes the two housings on the one hand and blocks the first and second tubes on the other hand.
In some embodiments of the protection box for a communication antenna terminal provided by the present application, please refer to fig. 4, a clamping strip 11 is slidably disposed on the first housing 1 and the second housing 2, and the clamping strip 11 cooperates with the positioning element 12 to close the first housing 1 and the second housing 2.
The clamping strip 11 is respectively matched with the first shell 1 and the second shell 2 in an inserting mode, and the first shell 1 and the second shell 2 are kept in a closed state by means of the structural strength of the clamping strip 11.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. Communication antenna connects protection box, its characterized in that includes:
a first housing;
the second shell is hinged on the first shell, and the first shell and the second shell are closed and used for accommodating an antenna connector;
a sealing membrane having one side positioned within the first housing and another side extending into and positioned within the second housing;
the grounding wire is arranged on the sealing film, and the sealing film is used for wrapping a joint and enabling the grounding wire to abut against the joint by means of closed swinging of the first shell and the second shell;
the sealing material is filled in the sealing film and used for isolating the joint from the outside;
the positioning piece is connected to the first shell and used for positioning the second shell on the first shell;
the first shell and the second shell are internally provided with limit strips in a detachable mode, and two side edges of the sealing membrane are respectively positioned on the limit strips on the corresponding side;
sealing strips are arranged in the first shell and the second shell, the two sealing strips are respectively arranged on the side edges, close to the two limiting strips, of the two limiting strips, and the sealing strips are abutted against the bottom surface of the sealing film; and the two blocking strips move oppositely by means of the swinging of the first shell and the second shell and are used for blocking the two side edges of the sealing film and forming a cavity.
2. The protecting box for the joint of the communication antenna according to claim 1, wherein the first shell and the second shell are each provided with a slot for inserting and matching with the limiting strip, and the opening directions of the two slots are obtuse angles.
3. The communications antenna connector protection case of claim 1, wherein a first tube is disposed on the second housing, and the first tube is communicated with the cavity for injecting the sealing material into the cavity.
4. The communications antenna connector protection case of claim 3, wherein the sealing strip abuts against an inner side surface of the sealing film, and the ground wire is provided on an outer side surface of the sealing film; the plugging strip is arranged to avoid the first pipe.
5. The communications antenna connector protective case of claim 1 wherein said ground wire is bonded to said sealing film.
6. The communications antenna connector protecting case according to claim 1, wherein the first housing has an inlet, and the inlet is used for injecting a filler into a space surrounded by the first housing, the second housing and the sealing film.
7. The protection box for the antenna connector according to claim 3, wherein one end of the positioning element is positioned on the first housing, the other end of the positioning element is connected to the second housing by a screw, and the positioning element penetrates through the first tube to plug the first tube.
8. The communications antenna connector protection box of claim 7, wherein a locking bar is slidably disposed on the first housing and the second housing, and the locking bar is engaged with the positioning member for closing the first housing and the second housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211700981.1A CN115693136B (en) | 2022-12-29 | 2022-12-29 | Protective box for communication antenna joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211700981.1A CN115693136B (en) | 2022-12-29 | 2022-12-29 | Protective box for communication antenna joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115693136A CN115693136A (en) | 2023-02-03 |
| CN115693136B true CN115693136B (en) | 2023-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211700981.1A Active CN115693136B (en) | 2022-12-29 | 2022-12-29 | Protective box for communication antenna joint |
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| CN (1) | CN115693136B (en) |
Family Cites Families (15)
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| CN200992359Y (en) * | 2006-12-27 | 2007-12-19 | 宋旭彬 | Hand-driven press vacuum sealing fresh-preservation box |
| CN201282322Y (en) * | 2008-09-05 | 2009-07-29 | 上海瑞侃电缆附件有限公司 | Sealing protective box |
| CN201450104U (en) * | 2009-07-30 | 2010-05-05 | 谢少强 | Sealed protection box of antenna feeder connector |
| CN201994622U (en) * | 2010-09-20 | 2011-09-28 | 林香山 | Double-layer protective box for cable joints |
| CN202384738U (en) * | 2012-01-12 | 2012-08-15 | 刘金炜 | Energy release-type cable middle connector explosion-proof safe protection box |
| CN202503094U (en) * | 2012-04-11 | 2012-10-24 | 刘赟宇 | Antenna feeder joint protective box |
| DE102015226705A1 (en) * | 2015-12-23 | 2017-06-29 | Trelleborg Sealing Solutions Germany Gmbh | Sealing arrangement with sealing foil |
| CN205565667U (en) * | 2016-04-28 | 2016-09-07 | 李程 | Extra -high -tension cable intermediate head protects box |
| CN205900762U (en) * | 2016-07-21 | 2017-01-18 | 曾滨 | Communications array connects protection box |
| CN106510774B (en) * | 2016-08-02 | 2018-06-29 | 成都五义医疗科技有限公司 | A kind of polygonal puncture outfit diaphragm seal containing groove |
| CN106175846B (en) * | 2016-08-02 | 2019-05-21 | 成都五义医疗科技有限公司 | A kind of puncture outfit sealing system of fold-type |
| CN207718027U (en) * | 2017-10-13 | 2018-08-10 | 宁波一普通信设备有限公司 | A kind of covered wire cable joint protection box |
| CN210326872U (en) * | 2019-10-18 | 2020-04-14 | 杨莹 | Communication cable joint sealing protection box |
| CN212182962U (en) * | 2020-05-18 | 2020-12-18 | 四川晟泰电力工程咨询有限公司 | Power grid is with protection device that supplies power backward |
| CN217934031U (en) * | 2022-06-24 | 2022-11-29 | 苏州圆能动力科技有限公司 | Battery module with communication interface |
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2022
- 2022-12-29 CN CN202211700981.1A patent/CN115693136B/en active Active
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