CN213827578U - Pressure induction type safety door of laser marking machine - Google Patents
Pressure induction type safety door of laser marking machine Download PDFInfo
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- CN213827578U CN213827578U CN202022111050.0U CN202022111050U CN213827578U CN 213827578 U CN213827578 U CN 213827578U CN 202022111050 U CN202022111050 U CN 202022111050U CN 213827578 U CN213827578 U CN 213827578U
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Abstract
The utility model provides a pressure induction type safety door of a laser marking machine, which comprises a pressure sensor arranged on the lower end surface of a door plate and coating the lower end surface of the door plate, wherein the pressure sensor is connected with a control circuit, and the control circuit is connected with a driving motor; the pressure sensor is connected with the control circuit through a cable, and the cable penetrates through the wire protection chain to be connected with the control circuit; one end of the wire protecting chain is fixedly connected with the marking machine, and the other end of the wire protecting chain is connected with the connecting block through the connecting arm; the safety door is simple in structure, the mechanical structure of the door plate is controlled in an electric control mode, and the pressure sensor is arranged on the end face of the lower edge of the door plate and used for sensing the condition of the lower end of the door plate; make this emergency exit can pass through the condition of pressure sensor induction door below, in time control door plant stops to descend, realizes preventing the effect of tong. The novel safety device has the advantages of simple structure, convenience in use and good safety.
Description
Technical Field
The utility model relates to a marking machine technical field especially relates to a forced induction formula emergency exit of laser marking machine.
Background
The laser marking machine is to irradiate the surface of different workpieces with high energy density laser beam to vaporize the surface material of the material or change its color, so as to expose the deep material or to burn out the surface material to show the etched pattern or character.
The existing laser marking machine generally comprises a laser, a focusing device and a vibrating mirror cavity; with the development of laser marking and cutting machine technology, the requirements on marking and cutting equipment are higher and higher while large-sized articles are marked and cut, so that high efficiency is required to be embodied, and higher requirements on the amount of waste materials after marking and cutting are also required. Along with the rapid development of the field of laser marking, the door opening structure of the laser marking machine is also automatically opened from the original manual development, and the opening and closing of the door structure are controlled through a circuit. In the prior art, most marking machines with doors have the defects that the doors need to be opened or closed manually; in daily laser operation, in consideration of safety problems, a user needs to close a door when using the marking machine, so that the problem of laser sputtering is avoided, and the safety of the user is ensured; however, the door of the marking machine is manually operated, the door is very heavy, time and labor are wasted, and sometimes a user often does not manually close the door for laziness or convenience, so that potential safety hazards are caused. Meanwhile, the door of the marking machine can be opened or closed only by hand, and the function is single. And some laser marking machine's structure of opening the door sets up to electric drive, through setting up the button, makes user control button to make the door plant carry out up-and-down motion. However, this method also has a potential safety hazard, but when the door panel is controlled to descend and is closed, there may be a false clamping, and the situation of the door when descending cannot be judged.
Therefore, to the problem that exists among the prior art, need provide a simple structure, can respond to the door plant below abnormal conditions, in time control door plant stop motion's pressure-sensitive emergency exit structure of laser marking machine urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to avoid the defects in the prior art, and provides a pressure sensing type safety door of a laser marking machine, which has simple structure, controls the mechanical structure of a door plate in an electric control mode, and is provided with a pressure sensor on the lower edge end surface of the door plate for sensing the condition of the lower end of the door plate; make this emergency exit can pass through the condition of pressure sensor induction door below, in time control door plant stops to descend, realizes preventing the effect of tong.
In order to achieve the above purpose, the purpose of the utility model is realized by the following technical scheme:
a pressure induction type safety door of a laser marking machine comprises a base of the marking machine, wherein a marking platform for placing a marking object is arranged on the base, a housing is arranged on the base, and a support frame which is arranged on the base and is positioned in the housing is arranged on the support frame; the marking assembly at least comprises a laser generator and a plurality of reflectors, the reflectors are in shaft connection with the motor, and laser emitted by the laser generator is reflected to the marking platform through the reflectors;
a door opening is formed in one side of the housing, and a door plate which slides up and down is installed on the door opening; the driving motor is arranged in the housing, and the driving strip is connected with the driving motor and the door plate; the inner side of the door plate is provided with two driving end blocks which are longitudinally arranged, the driving end block positioned at the lower part is a first driving end block, the driving end block positioned at the upper part is a second driving end block, and two ends of the transmission strip are fixedly connected with the two driving end blocks respectively; the rotating output end of the driving motor is in transmission connection with the transmission strip, and the door driving motor drives the door plate to slide up and down through the driving transmission strip; the door panel is characterized by also comprising a plurality of steel rope retractors arranged at the upper end of the housing, the tail ends of the steel ropes of the steel rope retractors are fixedly connected with the door panel, and the retracting forces of the steel rope retractors are matched with the weight of the door panel;
the device also comprises a guide rail structure arranged at the frame of the housing; the guide rail structure comprises an embedded sliding block, a guide rail and a connecting block; the embedded sliding block is connected with the door through a connecting block and is in sliding connection with the guide rail; the two guide rail structures are oppositely arranged on the frames at the two sides of the housing;
the door panel is characterized by also comprising a pressure sensor which is arranged on the lower end surface of the door panel and covers the lower end surface of the door panel, wherein the pressure sensor is connected with a control circuit, and the control circuit is connected with a driving motor; the pressure sensor is connected with the control circuit through a cable, and the cable penetrates through the wire protection chain to be connected with the control circuit; one end of the wire protecting chain is fixedly connected with the marking machine, and the other end of the wire protecting chain is connected with the connecting block through the connecting arm.
Specifically, the upper end of the housing comprises an upper surface and a lower surface of the top end of the housing and a part of side surfaces close to the top end.
Specifically, when the door panel moves downwards, the pressure sensor arranged on the lower end face of the door panel is subjected to impact force and generates pressure on the pressure sensor, the pressure sensor generates a resistance value change signal and sends the resistance value change signal to the control circuit, and the control circuit controls the door panel to stop moving or reversely rotate and rise through the driving motor.
The pressure sensor is a film pressure sensor, wherein the film pressure sensor is arranged on the lower end face of the door plate and covers the lower end face of the door plate.
Specifically, the film pressure sensor is arranged on the lower end face of the door panel and covers the lower end face of the door panel. When the arbitrary position of the lower end surface of the door panel receives the collision force, the pressure sensor senses the collision force; the resistance value of the stressed film pressure sensor changes and is transmitted to the control circuit, the control circuit controls the driving motor to stop rotating or reversely rotate, the door plate is suspended to descend or reversely rotate to lift the door plate, people or objects are prevented from being clamped, and therefore the use safety is guaranteed.
Specifically, the door plate slides up and down, the film pressure sensor moves up and down along with the movement of the door plate, and the cable connected with the film pressure sensor can be protected due to the design of the wire protection chain; firstly, guarantee that the circuit can not take off and break off because of the cable pine, secondly protection circuit avoids the cable damage to cause the incident.
Preferably, the film pressure sensor comprises an FSR resistive film pressure sensor.
The connecting arm comprises a first fixing end, a second fixing end and a plate body for connecting the first fixing end and the second fixing end; the plate body is obliquely arranged, wherein the plate body, the first fixed end and the second fixed end form a parallelogram structure; the first fixed end is connected with the wire protecting chain, and the second fixed end is fixed on the connecting block.
Specifically, the wire protecting chain is connected with the connecting block through the connecting arm, so that the wire protecting chain can move along with the up-and-down movement of the door plate, the cable can be constantly kept connected, and the circuit is prevented from being disconnected due to loosening of the cable. The structural design of linking arm can not only make the two form the connection, can also make whole connection structure more stable firm and laborsaving, is difficult for taking place the loss.
Above, all seted up the connecting hole on first stiff end, the second stiff end, wherein, connecting hole on the first stiff end and the connecting hole on the second stiff end are mutually perpendicular in space.
Preferably, the plate body is fixed on the marking machine.
Preferably, two embedded sliding blocks are fixedly connected to the connecting block, wherein each embedded sliding block comprises a main body and a plurality of pulleys; the main part and the connecting block fixed connection of gomphosis sliding block, a plurality of pulleys arrange with vertical direction and distribute in the main part, and a plurality of pulley gomphosis are in the guide rail, slide from top to bottom along the guide rail.
The door plate is fixed on the connecting block, the two embedded sliding blocks are fixedly arranged on the connecting block, the door plate can be kept smooth and stable in the up-and-down motion process, the up-and-down motion of the door plate can be assisted, the overlarge power is not needed to drive the door plate, and the effects of saving electricity and energy are achieved. Meanwhile, the door plate has good movement fluency, and saves labor and time.
The safety door also comprises a baffle plate, wherein the baffle plate is arranged at the same side as the door plate and is arranged at the upper end of the door opening; the baffle plate and the door plate are provided with partial overlapping areas; the baffle plate is connected with the door plate through a transmission strip; the baffle is concave relative to the encloser doorframe, and the concave space is used as the movable space of the door panel; the door panel is aligned with the housing doorframe.
Specifically, the baffle is arranged as a supporting point of a fixed pulley connected with the transmission strip, so that the fixed pulley can be matched with the driving pulley and the transmission strip for use to convey the door panel; meanwhile, the baffle can also be used as a shielding object of internal parts (such as a laser generator, a laser scanning head and the like) of the marking machine, so that the structure is more attractive.
Preferably, the steel rope retractor is fixed on the inner wall of the top surface of the housing; the inner wall of the top surface of the housing is also provided with a guide fixed pulley; the steel rope is wound around the guide fixed pulley, and the tail end of the steel rope is fixedly connected with the door panel through a connector.
Preferably, the steel rope retractor and the guide fixed pulley are in the same straight line; the two steel rope retractors are respectively arranged on two sides of the inner wall of the top surface of the housing by taking the transmission strip as a symmetrical center line; and the upper end surface of the connector is provided with a magnet block.
The utility model has the advantages that:
the utility model provides a pressure induction type safety door of a laser marking machine, which has simple structure, controls the mechanical structure of a door plate in an electric control mode, and is provided with a pressure sensor on the lower edge end surface of the door plate for sensing the condition of the lower end of the door plate; make this emergency exit can pass through the condition of pressure sensor induction door below, in time control door plant stops to descend, realizes preventing the effect of tong. The novel safety device has the advantages of simple structure, convenience in use and good safety.
Drawings
Fig. 1 is a schematic structural view of a pressure-sensitive safety door provided by the present invention;
fig. 2 is a schematic view of a baffle of the pressure-sensitive safety door according to the present invention;
fig. 3 is a schematic view of the connection between the internal driving structure and the door panel of the pressure-sensitive safety door provided by the present invention;
fig. 4 is a schematic view showing the connection of the internal mechanisms of the pressure-sensitive safety door according to the present invention;
fig. 5 is a schematic view of a connecting arm structure of the pressure-sensitive safety door provided by the present invention;
fig. 6 is a schematic side view of the connecting arm of the pressure-sensitive safety door according to the present invention;
fig. 7 is a schematic view illustrating the connection between the connecting block and the fitting sliding block of the pressure-sensitive safety door according to the present invention;
fig. 8 is a schematic structural view of the fitting sliding block of the pressure-sensitive safety door according to the present invention.
Description of the reference numerals
The device comprises a housing 1, a baffle 2, a door panel 3, a transmission strip 4, a steel rope coiler 5, a guide rail structure 6, a pressure sensor 7, a wire protection chain 8 and a connecting arm 9;
41 drive motor, 42 first drive end block, 43 second drive end block;
51 steel rope, 52 guide fixed pulley, 53 connector;
61 engaging slide block, 611 main body, 612 pulley; 62 embedded guide rails and 63 connecting blocks;
91 a first fixed end, 92 a second fixed end and 93 a plate body.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 8, the embodiment provides a pressure-sensitive safety door of a laser marking machine, which includes a base of the marking machine, a marking platform for placing a marking object is arranged on the base, a housing 1 is arranged on the base, and a support frame is arranged on the base and located in the housing 1, and a marking assembly is arranged on the support frame; the marking assembly at least comprises a laser generator and a plurality of reflectors, the reflectors are in shaft connection with the motor, and laser emitted by the laser generator is reflected to the marking platform through the reflectors; a door opening is formed in one side of the housing 1, and a door plate 3 which slides up and down is installed on the door opening; the door panel driving device also comprises a driving motor 41 arranged in the housing 1 and a transmission strip 4 connecting the driving motor 41 and the door panel 3; two driving end blocks which are longitudinally arranged are arranged on the inner side of the door plate 3, the driving end block positioned at the lower part is a first driving end block 42, the driving end block positioned at the upper part is a second driving end block 43, and two ends of the transmission strip 4 are fixedly connected with the two driving end blocks respectively; the rotating output end of the driving motor 41 is in transmission connection with the transmission strip 4, and the door driving motor drives the door panel 3 to slide up and down through the driving transmission strip 4; the door panel is characterized by further comprising two steel rope retractors 5 arranged at the upper end of the housing 1, the tail ends of steel ropes 51 of the two steel rope retractors 5 are fixedly connected with the door panel 3, and the retracting forces of the two steel rope retractors 5 are matched with the weight of the door panel 3; the safety door also comprises a baffle 2, wherein the baffle 2 is arranged at the same side of the door plate 3 and is arranged at the upper end of the door opening; the baffle plate 2 and the door plate 3 have a partial overlapping area; the baffle 2 is connected with the door panel 3 through a transmission strip 4; the baffle 2 is concave relative to the door frame of the housing 1, and the concave space is used as the movable space of the door plate 3; the door panel 3 is aligned with the door frame of the housing 1. The baffle 2 is arranged as a supporting point of a fixed pulley 612 connected with the transmission strip 4, so that the fixed pulley 612 can be matched with the driving pulley 612 and the transmission strip 4 for use to transmit the door panel 3; meanwhile, the baffle 2 can also be used as a shielding object of internal parts (such as a laser generator, a laser scanning head and the like) of the marking machine, so that the structure is more attractive.
In the present embodiment, the rope retractor 5 is fixed to the inner wall of the top surface of the housing 1; the inner wall of the top surface of the housing 1 is also provided with a guide fixed pulley 52; the cable 51 passes around the guide crown block 52 and is fixedly connected at its end to the door panel 3 by means of a connector 53. The steel rope coiler 5 and the guide fixed pulley 52 are in the same straight line; the two steel rope retractors 5 are arranged on two sides of the inner wall of the top surface of the housing 1 respectively by taking the transmission strip 4 as a symmetrical center line; the upper end surface of the connector 53 is provided with a magnet block.
The device also comprises a guide rail structure 6 arranged at the frame of the housing 1; wherein, the guide rail structure 6 comprises an embedded sliding block 61, a guide rail and a connecting block 63; the embedded sliding block 61 is connected with the door panel 3 through a connecting block 63, and the embedded sliding block 61 is connected with the guide rail in a sliding way; the number of the guide rail structures 6 is two, and the two guide rail structures 6 are oppositely arranged on the frames at the two sides of the housing 1;
the door panel is characterized by further comprising a pressure sensor 7 which is arranged on the lower end face of the door panel 3 and covers the lower end face of the door panel 3, wherein the pressure sensor 7 is connected with a control circuit, and the control circuit is connected with the driving motor 41; the pressure sensor 7 is connected with the control circuit through a cable, and the cable penetrates through the wire protection chain 8 to be connected with the control circuit; one end of the wire protecting chain 8 is fixedly connected with the marking machine, and the other end of the wire protecting chain is connected with the connecting block 63 through the connecting arm 9. Wherein, the upper end of the housing 1 comprises the upper surface and the lower surface of the top end of the housing 1 and a part of side surface close to the top end.
Specifically, when the door panel 3 moves downwards, the pressure sensor 7 arranged on the lower end surface of the door panel 3 is subjected to impact force and generates pressure on the pressure sensor 7, the pressure sensor 7 generates a resistance value change signal and sends the resistance value change signal to the control circuit, and the control circuit controls the door panel 3 to stop moving or reversely rotate and rise through the driving motor 41.
In this embodiment, the pressure sensor 7 is a film pressure sensor 7, wherein the film pressure sensor 7 is disposed on the lower end surface of the door panel 3 and covers the lower end surface of the door panel 3. The film pressure sensor 7 is arranged on the lower end face of the door panel 3 and covers the lower end face of the door panel 3. When the arbitrary position of the lower end surface of the door panel 3 receives the collision force, the pressure sensor 7 senses the collision force; the resistance value of the stressed film pressure sensor 7 changes and is transmitted to the control circuit, and the control circuit controls the driving motor 41 to stop rotating or reversely rotate, so that the door panel 3 temporarily descends or reversely rotates to lift the door panel 3, people or objects are prevented from being clamped, and the use safety is ensured. Due to the fact that the door panel 3 slides up and down, the film pressure sensor 7 moves up and down along with the movement of the door panel 3, and due to the design of the wire protection chain 8, a cable connected with the film pressure sensor 7 can be protected; firstly, guarantee that the circuit can not take off and break off because of the cable pine, secondly protection circuit avoids the cable damage to cause the incident.
In the present embodiment, the film pressure sensor 7 is an FSR resistive film pressure sensor.
In the present embodiment, the connecting arm 9 includes a first fixing end 91, a second fixing end 92, and a plate 93 connecting the first fixing end 91 and the second fixing end 92; the plate body 93 is obliquely arranged, wherein the plate body 93, the first fixing end 91 and the second fixing end 92 form a parallelogram structure; the first fixed end 91 is connected with the wire protecting chain 8, and the second fixed end 92 is fixed on the connecting block 63. The wire protection chain 8 is connected with the connecting block 63 through the connecting arm 9, so that the wire protection chain 8 can move along with the up-and-down movement of the door plate 3, the cables can be constantly kept connected, and the circuit is prevented from being disconnected due to loosening of the cables. The structural design of the connecting arm 9 not only enables the two to form connection, but also enables the whole connecting structure to be more stable, firm and labor-saving, and is not easy to lose.
In this embodiment, the first fixing end 91 and the second fixing end 92 are both provided with a connecting hole, wherein the connecting hole on the first fixing end 91 and the connecting hole on the second fixing end 92 are perpendicular to each other in space. Wherein, the plate body 93 is fixed on the marking machine.
In this embodiment, two fitting sliding blocks 61 are fixedly connected to the connecting block 63, wherein each fitting sliding block 61 includes a main body 611 and three pulleys 612; the main body 611 of the fitting slide block 61 is fixedly connected to the connecting block 63, the three pulleys 612 are arranged and distributed on the main body 611 in the vertical direction, and the three pulleys 612 are fitted in the guide rail and slide up and down along the guide rail.
Specifically, fixedly on connecting block 63, set up two gomphosis sliding blocks 61, can make door plant 3 keep smooth stable at the in-process of up-and-down motion, and can assist door plant 3 up-and-down motion, need not too big power drive door plant 3, reach the energy-conserving effect of power saving. Meanwhile, the door plate 3 has good movement fluency, and saves labor and time.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A pressure induction type safety door of a laser marking machine comprises a base of the marking machine, wherein a marking platform for placing a marking object is arranged on the base, a housing is arranged on the base, and a support frame which is arranged on the base and is positioned in the housing is arranged on the support frame; the marking assembly at least comprises a laser generator and a plurality of reflectors, the reflectors are in shaft connection with the motor, and laser emitted by the laser generator is reflected to the marking platform through the reflectors; the method is characterized in that:
a door opening is formed in one side of the housing, and a door plate which slides up and down is installed on the door opening; the driving motor is arranged in the housing, and the driving strip is connected with the driving motor and the door plate; the inner side of the door plate is provided with two driving end blocks which are longitudinally arranged, the driving end block positioned at the lower part is a first driving end block, the driving end block positioned at the upper part is a second driving end block, and two ends of the transmission strip are fixedly connected with the two driving end blocks respectively; the rotating output end of the driving motor is in transmission connection with the transmission strip, and the door driving motor drives the door plate to slide up and down through the driving transmission strip; the door panel is characterized by also comprising a plurality of steel rope retractors arranged at the upper end of the housing, the tail ends of the steel ropes of the steel rope retractors are fixedly connected with the door panel, and the retracting forces of the steel rope retractors are matched with the weight of the door panel;
the device also comprises a guide rail structure arranged at the frame of the housing; the guide rail structure comprises an embedded sliding block, a guide rail and a connecting block; the embedded sliding block is connected with the door through a connecting block and is in sliding connection with the guide rail; the two guide rail structures are oppositely arranged on the frames at the two sides of the housing;
the door panel is characterized by also comprising a pressure sensor which is arranged on the lower end surface of the door panel and covers the lower end surface of the door panel, wherein the pressure sensor is connected with a control circuit, and the control circuit is connected with a driving motor; the pressure sensor is connected with the control circuit through a cable, and the cable penetrates through the wire protection chain to be connected with the control circuit; one end of the wire protecting chain is fixedly connected with the marking machine, and the other end of the wire protecting chain is connected with the connecting block through the connecting arm.
2. The pressure-sensitive safety door according to claim 1, wherein the pressure sensor is a thin film pressure sensor, wherein the thin film pressure sensor is disposed on and covers a lower end surface of the door panel.
3. A pressure sensitive safety door according to claim 2 wherein the membrane pressure sensor comprises an FSR resistive membrane pressure sensor.
4. The pressure-sensitive safety door according to claim 1, wherein the connecting arm includes a first fixing end, a second fixing end, and a plate body connecting the first fixing end and the second fixing end; the plate body is obliquely arranged, wherein the plate body, the first fixed end and the second fixed end form a parallelogram structure; the first fixed end is connected with the wire protecting chain, and the second fixed end is fixed on the connecting block.
5. The pressure-sensitive safety door according to claim 4, wherein the first fixing end and the second fixing end are both provided with a connecting hole, and the connecting hole of the first fixing end and the connecting hole of the second fixing end are perpendicular to each other in space.
6. A pressure sensitive safety door according to claim 4 wherein said panel is secured to a marking machine.
7. The pressure-sensitive safety door according to claim 1, wherein two engaging sliding blocks are fixedly connected to the connecting block, wherein each engaging sliding block includes a main body and a plurality of pulleys; the main part and the connecting block fixed connection of gomphosis sliding block, a plurality of pulleys arrange with vertical direction and distribute in the main part, and a plurality of pulley gomphosis are in the guide rail, slide from top to bottom along the guide rail.
8. The pressure-sensitive safety door according to claim 1, further comprising a baffle plate, wherein the baffle plate is arranged at the same side as the door panel and at the upper end of the door opening; the baffle plate and the door plate are provided with partial overlapping areas; the baffle plate is connected with the door plate through a transmission strip; the baffle is concave relative to the encloser doorframe, and the concave space is used as the movable space of the door panel; the door panel is aligned with the housing doorframe.
9. A pressure sensitive safety door according to claim 1 wherein said cable retractor is fixed to the inner wall of the top surface of the housing; the inner wall of the top surface of the housing is also provided with a guide fixed pulley; the steel rope is wound around the guide fixed pulley, and the tail end of the steel rope is fixedly connected with the door panel through a connector.
10. A pressure sensitive safety door according to claim 9 wherein said cable retractor is co-linear with said leading fixed sheave; the two steel rope retractors are respectively arranged on two sides of the inner wall of the top surface of the housing by taking the transmission strip as a symmetrical center line; and the upper end surface of the connector is provided with a magnet block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022111050.0U CN213827578U (en) | 2020-09-23 | 2020-09-23 | Pressure induction type safety door of laser marking machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022111050.0U CN213827578U (en) | 2020-09-23 | 2020-09-23 | Pressure induction type safety door of laser marking machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213827578U true CN213827578U (en) | 2021-07-30 |
Family
ID=77005739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022111050.0U Active CN213827578U (en) | 2020-09-23 | 2020-09-23 | Pressure induction type safety door of laser marking machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213827578U (en) |
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2020
- 2020-09-23 CN CN202022111050.0U patent/CN213827578U/en active Active
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