CN221164721U - Automatic detection equipment for circular runout of worm shaft end of worm shaft production - Google Patents
Automatic detection equipment for circular runout of worm shaft end of worm shaft production Download PDFInfo
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- CN221164721U CN221164721U CN202322783225.6U CN202322783225U CN221164721U CN 221164721 U CN221164721 U CN 221164721U CN 202322783225 U CN202322783225 U CN 202322783225U CN 221164721 U CN221164721 U CN 221164721U
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- 238000001514 detection method Methods 0.000 title claims abstract description 64
- 238000004519 manufacturing process Methods 0.000 title description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 238000003825 pressing Methods 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to automatic detection equipment for circular runout of a worm shaft end produced by a worm shaft, which comprises a workbench and a pressing component, wherein the top of the workbench is provided with a mounting frame, the mounting frame is provided with a pressing component capable of lifting, the pressing component is provided with a driving component capable of driving a worm to be detected to rotate, a first mounting plate is arranged below the workbench, the first mounting plate is provided with a feeding mechanism, the top of the workbench is also provided with a detection device, the detection device comprises positioning components arranged at two sides of the feeding mechanism and positioned right below the pressing component, the worm to be detected is conveyed to the detection device by starting the feeding mechanism, the positioning components at two sides of the feeding mechanism are matched to fix the worm to be detected, then the worm to be detected is pressed by the pressing component, and the driving component is started to drive the worm to rotate, so that automatic detection is realized, and the detection efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of worm shaft production and processing, in particular to automatic detection equipment for the circular runout of the end of a worm shaft in worm shaft production.
Background
The worm transmission is a transmission for transmitting motion and power between two axes which are staggered in space, the included angle between the two axes can be any value, the common use is 90 degrees, the transmission has the advantages of compact structure, large transmission ratio, stable transmission, reliable self-locking property under certain conditions and the like, the worm transmission is widely applied to machine tools, automobiles, instruments, hoisting and transporting machines, metallurgical machines and other machines or equipment, the shaft end circle run-out error in manufacturing errors is an important parameter for detecting whether the worm is qualified or not, the existing detection method generally uses a V-shaped positioning tool to position a reference circle surface, a spring device is used for pressing a workpiece, a dial gauge needle is arranged at the measured circle surface, the pointer run-out range of the dial gauge is visually checked through manual rotation, and then the pointer run-out range is converted into an actual measurement value, and compared with a drawing standard, so that good products and defective products are screened.
The workpiece is required to be manually assembled/taken before and after measurement, the workpiece is required to be manually rotated in the measurement process, and the workpiece is likely to be loosened due to manual installation after long-time work, so that the workpiece is not suitable for batch measurement, and the detection efficiency is reduced.
Disclosure of Invention
Based on this, it is necessary to provide a worm axle head circle of worm axle production and beat automated inspection equipment to prior art problem, will wait to detect worm through starting feed mechanism and carry detection device, will wait to detect worm fixed mounting by the locating component cooperation of feed mechanism both sides, will wait to detect the worm later and compress tightly through compressing tightly the subassembly, realize automatic handling worm, then start drive assembly again and drive the worm rotation to realize automated inspection, improve the efficiency of detection.
In order to solve the problems in the prior art, the utility model provides automatic detection equipment for the circular runout of the shaft end of a worm produced by a worm shaft, which comprises a workbench and a compacting assembly;
The top of the workbench is provided with a mounting frame, a pressing assembly capable of lifting is arranged on the mounting frame, and a driving assembly capable of driving the worm to be detected to rotate is arranged on the pressing assembly;
The below of workstation is provided with first mounting panel, is provided with feed mechanism on the first mounting panel, the top of workstation still is provided with detection device, and detection device is including setting up the locating component of feed mechanism both sides to be located and compress tightly the subassembly under.
Preferably, the pressing assembly comprises a first lifting cylinder and a lifting bracket, and the driving assembly comprises a rotating motor and a driving wheel;
The first lifting cylinder is arranged at the top of the mounting frame, and the output end of the first lifting cylinder extends to the workbench;
The lifting support is arranged at the core tail of the first lifting cylinder, a first lifting plate and a second lifting plate are respectively arranged at two ends of the lifting support, a rotating motor is arranged at the top of the first lifting plate, two driving wheels are arranged in the first lifting plate, one ends of the two driving wheels are in transmission connection with the output end of the rotating motor through a synchronous belt mechanism, and two compression wheels are arranged in the second lifting plate.
Preferably, the positioning assembly comprises a second mounting plate and a third mounting plate;
The second mounting plate and the third mounting plate are respectively located at the top of the workbench, the second mounting plate and the third mounting plate are respectively provided with a first supporting plate, two rollers are arranged in the first supporting plate, one side of the first supporting plate is also provided with a detection support, and a detection assembly is arranged in the detection support.
Preferably, the positioning assembly further comprises a moving plate, a driving bracket and a fourth supporting plate;
The movable plate is arranged on the mounting plate through the first sliding rail mechanism and is positioned on one side of the second supporting plate on the second mounting plate, a third supporting plate is arranged on the mounting plate, and a first jacking block is arranged on one side of the third supporting plate;
The driving support is arranged on the second mounting plate and positioned at one side of the third support plate, a telescopic cylinder is arranged on the driving support, and the output end of the telescopic cylinder is connected with one side of the third support plate;
The fourth backup pad sets up on the third mounting panel to be located the one side of the second backup pad on the third mounting panel, one side of fourth backup pad is provided with the second kicking block.
Preferably, the positioning assembly further comprises a second sliding rail mechanism and a first lifting mechanism;
Second sliding rail mechanisms are respectively arranged between the third supporting plate and the first top block, and between the fourth supporting plate and the second top block;
The movable plate and the third mounting plate are respectively provided with a first lifting mechanism, and are respectively located under the second sliding rail mechanism, and the output end of the first lifting mechanism is respectively connected with the bottom ends of the first jacking block and the second jacking block.
Preferably, the feeding mechanism comprises four second supporting plates, a fixed plate and a second lifting cylinder;
The four second support plates are respectively arranged on two sides of the first mounting plate, and two discharging plates are arranged on the four second support plates;
the front part and the rear part of the first mounting plate are respectively provided with a fixed plate, and the fixed plates are respectively provided with a second lifting cylinder;
The second lifting cylinder is arranged on the fixed plate through the sliding block mechanism, the lifting plate is arranged at the tail of the output end core of the second cylinder, two conveying plates are arranged at two ends of the lifting plate, and the two conveying plates are positioned on the inner sides of the two discharging plates and lower than the two discharging plates.
Compared with the prior art, the application has the beneficial effects that: according to the automatic worm detection device, the worm to be detected is conveyed to the detection device through starting the feeding mechanism, the positioning components on two sides of the feeding mechanism are matched to fixedly install the worm to be detected, then the worm to be detected is pressed through the pressing components, automatic assembly and disassembly of the worm are achieved, then the driving component is started to drive the worm to rotate, automatic detection is achieved, after the worm to be detected is conveyed to the detection device through the feeding mechanism, the lifting support, the first lifting plate and the second lifting plate are driven to move downwards through the first lifting cylinder to enable the driving wheel and the pressing wheel to be in contact with the outer circle of the worm to be detected, the worm to be detected is pressed, the rotating motor is started to drive the driving wheel to drive the worm to be detected to rotate, automatic detection is achieved, two ends of the worm to be detected are pressed through the driving wheel and the pressing wheel on two sides of the lifting support, the worm to be detected is enabled to be more stable in the detection process, and detection accuracy is improved.
Drawings
Fig. 1 is a schematic perspective view of an automatic detection device for the circular runout of the shaft end of a worm produced by a worm shaft.
Fig. 2 is a front view of a pressing assembly of the automatic detection device for the circular runout of the shaft end of the worm produced by the worm shaft.
Fig. 3 is a sectional view of an automatic detecting apparatus for circular runout of a worm shaft end in the production of a worm shaft.
Fig. 4 is a schematic perspective view of a detecting device of the automatic detecting device for the circular runout of the shaft end of the worm produced by the worm shaft.
Fig. 5 is a schematic perspective view of a pressing assembly of the automatic detection device for the circular runout of the shaft end of the worm produced by the worm shaft.
The reference numerals in the figures are: 1-a workbench; 11-mounting rack; 12-a first mounting plate; 121-a second support plate; 2-a feeding mechanism; 21-a discharging plate; 22-a fixed plate; 23-a second lifting cylinder; 231-an electric slider mechanism; 232-lifting plate; 233-a delivery plate; 3-a detection device; 31-a positioning assembly; 311-a second mounting plate; 312-a first support plate; 313-roller; 314-detecting a bracket; 315-a detection component; 316-a mobile plate; 317-a first slide rail mechanism; 318-a third support plate; 319-a second slide rail mechanism; 3110-a first top block; 3111-a first lifting mechanism; 3112-drive rack; 3113-telescoping cylinders; 32-a third mounting plate; 321-a fourth support plate; 322-a second top block; 4-a compacting assembly; 41-a first lifting cylinder; 42-lifting support; 421-a first lifter plate; 422-drive assembly; 423-a driving wheel; 424-rotating electric machine; 425-synchronous belt mechanism; 43-a second lifter plate; 431-pinch roller; 5-worm.
Detailed Description
The utility model will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the utility model and the specific objects and functions achieved.
Referring to fig. 1 to 5, an automatic detection device for the circular runout of the shaft end of a worm produced by a worm shaft comprises a workbench 1 and a pressing assembly 4.
The top of workstation 1 is provided with mounting bracket 11, is provided with the hold-down subassembly 4 that can go up and down on the mounting bracket 11, is provided with the drive assembly 422 that can drive the worm 5 pivoted that waits to detect on the hold-down subassembly 4.
The below of workstation 1 is provided with first mounting panel 12, is provided with feed mechanism 2 on the first mounting panel 12, the top of workstation 1 still is provided with detection device 3, and detection device 3 is including setting up the locating component 31 of feed mechanism 2 both sides to be located compressing tightly the subassembly 4 under.
The worm 5 to be detected is conveyed to the detection device 3 by starting the feeding mechanism 2, the worm 5 to be detected is fixedly installed by matching the positioning components 31 on two sides of the feeding mechanism 2, then the worm 5 to be detected is compressed by the compressing component 4, automatic assembly and disassembly of the worm 5 are achieved, and then the driving component 422 is started to drive the worm 5 to rotate, so that automatic detection is achieved.
Referring to fig. 1 to 5, the pressing assembly 4 includes a first lifting cylinder 41 and a lifting bracket 42, and the driving assembly 422 includes a rotating motor 424 and a driving wheel 423.
The first lifting cylinder 41 is arranged at the top of the mounting frame 11, and the output end of the first lifting cylinder 41 extends to the workbench 1.
The lifting support 42 is arranged at the core tail of the first lifting cylinder 41, two ends of the lifting support 42 are respectively provided with a first lifting plate 421 and a second lifting plate 43, the top of the first lifting plate 421 is provided with a rotating motor 424, two driving wheels 423 are arranged in the first lifting plate 421, one ends of the two driving wheels 423 are in transmission connection with the output end of the rotating motor 424 through a synchronous belt mechanism 425, and two pressing wheels 431 are arranged in the second lifting plate 43.
After the worm 5 to be detected is conveyed to the detecting device 3, the lifting support 42, the first lifting plate 421 and the second lifting plate 43 are driven to move downwards through the first lifting cylinder 41, the driving wheel 423 and the pressing wheel 431 are in contact with the outer circle of the worm 5 to be detected, the worm 5 to be detected is pressed, the rotating motor 424 is started again to drive the driving wheel 423, the driving wheel 423 drives the worm 5 to be detected to rotate, automatic detection is achieved by the aid of the automatic rotating worm, two ends of the worm 5 to be detected are pressed through the driving wheel 423 and the pressing wheel 431 located on two sides of the lifting support 42, the worm 5 to be detected is more stable in the detecting process, and detection accuracy is improved.
Referring to fig. 4, the positioning assembly 31 includes a second mounting plate 311 and a third mounting plate 32.
The second mounting plate 311 and the third mounting plate 32 are respectively located at the top of the workbench 1, the second mounting plate 311 and the third mounting plate 32 are respectively provided with a first supporting plate 312, two rollers 313 are arranged in the first supporting plate 312, one side of the first supporting plate 312 is also provided with a detection bracket 314, and a detection assembly 315 is arranged in the detection bracket 314.
The worm 5 to be detected is conveyed to the second mounting plate 311 and the third mounting plate 32 through the feeding mechanism 2, and is supported through two rollers 313 respectively arranged in the first supporting plates 312 on the second mounting plate 311 and the third mounting plate 32, at the moment, the excircles at the two ends of the worm 5 to be detected are in contact with the detection ends to be detected, the worm 5 to be detected is pressed and driven through the pressing component 4 and the driving component 422, and the worm 5 to be detected can be driven more stably by the driving component 422 in the automatic detection process through the two rollers 313 respectively arranged in the first supporting plates 312 on the second mounting plate 311 and the third mounting plate 32, so that automatic detection is realized.
Referring to fig. 4, the positioning assembly 31 further includes a moving plate 316, a driving bracket 3112, and a fourth support plate 321.
The moving plate 316 is disposed on the mounting plate through a first sliding rail mechanism 317 and is located on one side of the second support plate 121 on the second mounting plate 311, a third support plate 318 is disposed on the mounting plate, and a first top block 3110 is disposed on one side of the third support plate 318.
The driving bracket 3112 is disposed on the second mounting plate 311 and located on one side of the third support plate 318, a telescopic cylinder 3113 is disposed on the driving bracket 3112, and an output end of the telescopic cylinder 3113 is connected to one side of the third support plate 318.
The fourth support plate 321 is disposed on the third mounting plate 32 and is located at one side of the second support plate 121 on the third mounting plate 32, and a second top block 322 is disposed at one side of the fourth support plate 321.
When the worm 5 to be detected is conveyed to the second supporting plate 121, the telescopic cylinder 3113 drives the third supporting plate 318 to enable the first top block 3110 and the second top block 322 to be matched to fix two ends of the worm 5 to be detected, so that the worm 5 to be detected is prevented from shifting during rotation detection, and stability of the worm 5 to be detected is improved.
Referring to fig. 4, the positioning assembly 31 further includes a second slide rail mechanism 319 and a first lift mechanism 3111.
Second sliding rail mechanisms 319 are respectively arranged between the third supporting plate 318 and the first top block 3110, and between the fourth supporting plate 321 and the second top block 322.
The moving plate 316 and the third mounting plate 32 are respectively provided with a first lifting mechanism 3111, and are respectively located under the second sliding rail mechanism 319, and output ends of the first lifting mechanism 3111 are respectively connected with bottom ends of the first top block 3110 and the second top block 322.
The height of the first top block 3110 and the second top block 322 can be adjusted through the cooperation of the second sliding rail and the first lifting mechanism 3111, so that the center of the top block always coincides with the center of the worm 5 to be detected, the fact that the worm 5 to be detected is more stable in the detection process is guaranteed, and the heights of the first top block 3110 and the second top block 322 are adjusted, so that the center heights of the top blocks automatically detect the worm 5 with different sizes.
Referring to fig. 1 to 5, the loading mechanism 2 includes four second support plates 121, a fixing plate 22, and a second lifting cylinder 23.
The four second support plates 121 are respectively disposed on two sides of the first mounting plate 12, and two discharging plates 21 are disposed on the four second support plates 121.
The front and rear parts of the first mounting plate 12 are respectively provided with a fixing plate 22, and the fixing plates 22 are respectively provided with a second lifting cylinder 23.
The second lifting cylinder 23 is arranged on the fixed plate 22 through a sliding block mechanism, the lifting plate is arranged at the tail of the output end core of the second cylinder, two conveying plates 233 are arranged at two ends of the lifting plate, and the two conveying plates 233 are positioned at the inner sides of the two discharging plates 21 and lower than the two discharging plates 21.
The worm 5 to be detected is placed on the discharging plate 21 by manpower, the feeding mechanism 2 is started again, the conveying plate 233 is driven to rise by the second lifting air cylinder 23, the conveying plate 233 supports the worm 5 to be detected, the air cylinder and the conveying plate 233 are driven to move backwards by the electric sliding block mechanism 231, the worm 5 to be detected is moved to the upper portion of the positioning component 31, then the air cylinder is controlled to descend to lower the worm 5 to be detected, the detection device 3 and the pressing component 4 are started again to detect, when the conveying plate 233 returns to the original position after the worm 5 to be detected is put down, the conveying plate 233 returns to the original position by the electric sliding block mechanism 231 until the worm 5 to be detected is started next time, the detected worm 5 is conveyed to the discharging plate 21, and the automatic feeding and discharging functions are achieved by the like, and the detection efficiency is improved.
According to the application, the worm 5 to be detected is conveyed to the detection device 3 by starting the feeding mechanism 2, the worm 5 to be detected is fixedly installed by matching of the positioning components 31 on two sides of the feeding mechanism 2, then the worm 5 to be detected is compressed by the compressing component 4, automatic assembly and disassembly of the worm 5 are realized, then the driving component 422 is started to drive the worm 5 to rotate, automatic detection is realized, after the worm 5 to be detected is conveyed to the detection device 3 by the feeding mechanism 2, the lifting support 42, the first lifting plate 421 and the second lifting plate 43 are driven to move downwards by the first lifting cylinder 41, the driving wheel 423 and the compressing wheel 431 are in contact with the outer circle of the worm 5 to be detected, the worm 5 to be detected is compressed, the rotating motor 424 is started again to drive the driving wheel 423, the driving wheel 423 drives the worm 5 to be detected to rotate, automatic rotation of the worm 5 to be detected is realized, two ends of the worm 5 to be detected are compressed by the driving wheel 423 and the compressing wheel 431 positioned on two sides of the lifting support 42, so that the worm 5 to be detected is more stable in the detection process, and the detection accuracy is improved.
The foregoing examples merely illustrate one or more embodiments of the utility model, which are described in greater detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.
Claims (6)
1. The automatic detection equipment for the circular runout of the shaft end of the worm produced by the worm shaft is characterized by comprising a workbench (1) and a pressing assembly (4);
The top of the workbench (1) is provided with a mounting frame (11), the mounting frame (11) is provided with a pressing component (4) capable of lifting, and the pressing component (4) is provided with a driving component (422) capable of driving the worm (5) to be detected to rotate;
The automatic feeding device is characterized in that a first mounting plate (12) is arranged below the workbench (1), a feeding mechanism (2) is arranged on the first mounting plate (12), a detection device (3) is further arranged at the top of the workbench (1), and the detection device (3) comprises positioning components (31) arranged on two sides of the feeding mechanism (2) and is located under the pressing components (4).
2. Automatic detection device for the circular runout of the shaft end of a worm produced by a worm shaft according to claim 1, characterized in that the compacting assembly (4) comprises a first lifting cylinder (41) and a lifting bracket (42), and the driving assembly (422) comprises a rotating motor (424) and a driving wheel (423);
The first lifting cylinder (41) is arranged at the top of the mounting frame (11), and the output end of the first lifting cylinder (41) extends to the workbench (1);
The lifting support (42) is arranged at the core tail of the first lifting cylinder (41), a first lifting plate (421) and a second lifting plate (43) are respectively arranged at two ends of the lifting support (42), a rotating motor (424) is arranged at the top of the first lifting plate (421), two driving wheels (423) are arranged in the first lifting plate (421), one ends of the two driving wheels (423) are in transmission connection with the output end of the rotating motor (424) through a synchronous belt mechanism (425), and two pressing wheels (431) are arranged in the second lifting plate (43).
3. An automatic detection apparatus for the circular runout of the shaft end of a worm produced by a worm shaft according to claim 1, characterized in that the positioning assembly (31) comprises a second mounting plate (311) and a third mounting plate (32);
The utility model discloses a workbench, including workstation (1), first backup pad (312) are provided with in first backup pad (312), second mounting panel (311) and third mounting panel (32) are located the top of workstation (1) respectively, are provided with two gyro wheels (313) in second mounting panel (311) and third mounting panel (32) respectively, and one side of first backup pad (312) still is provided with detection support (314), is provided with detection component (315) in detection support (314).
4. The automatic detection device for the circular runout of the shaft end of a worm produced by a worm shaft according to claim 1, wherein the positioning assembly (31) further comprises a moving plate (316), a driving bracket (3112) and a fourth supporting plate (321);
The movable plate (316) is arranged on the mounting plate through a first sliding rail mechanism (317) and is positioned on one side of a second supporting plate (121) on a second mounting plate (311), a third supporting plate (318) is arranged on the mounting plate, and a first top block (3110) is arranged on one side of the third supporting plate (318);
The driving bracket (3112) is arranged on the second mounting plate (311) and is positioned on one side of the third supporting plate (318), a telescopic cylinder (3113) is arranged on the driving bracket (3112), and the output end of the telescopic cylinder (3113) is connected with one side of the third supporting plate (318);
The fourth supporting plate (321) is arranged on the third mounting plate (32) and is positioned on one side of the second supporting plate (121) on the third mounting plate (32), and a second top block (322) is arranged on one side of the fourth supporting plate (321).
5. The automatic detection device for the circular runout of the shaft end of a worm produced by a worm shaft according to claim 4, wherein the positioning assembly (31) further comprises a second slide rail mechanism (319) and a first lifting mechanism (3111);
A second sliding rail mechanism (319) is respectively arranged between the third supporting plate (318) and the first top block (3110), and between the fourth supporting plate (321) and the second top block (322);
The movable plate (316) and the third mounting plate (32) are respectively provided with a first lifting mechanism (3111) and are respectively located under the second sliding rail mechanism (319), and the output end of the first lifting mechanism (3111) is respectively connected with the bottom ends of the first top block (3110) and the second top block (322).
6. The automatic detection device for the circular runout of the shaft end of the worm produced by the worm shaft according to claim 1, wherein the feeding mechanism (2) comprises four second supporting plates (121), a fixed plate (22) and a second lifting cylinder (23);
The four second support plates (121) are respectively arranged at two sides of the first mounting plate (12), and two discharging plates (21) are arranged on the four second support plates (121);
The front part and the rear part of the first mounting plate (12) are respectively provided with a fixed plate (22), and the fixed plates (22) are respectively provided with a second lifting cylinder (23);
The second lifting cylinder (23) is arranged on the fixed plate (22) through the sliding block mechanism, the lifting plate is arranged at the tail of the output end core of the second cylinder, two conveying plates (233) are arranged at two ends of the lifting plate, and the two conveying plates (233) are positioned on the inner sides of the two discharging plates (21) and lower than the two discharging plates (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322783225.6U CN221164721U (en) | 2023-10-17 | 2023-10-17 | Automatic detection equipment for circular runout of worm shaft end of worm shaft production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322783225.6U CN221164721U (en) | 2023-10-17 | 2023-10-17 | Automatic detection equipment for circular runout of worm shaft end of worm shaft production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221164721U true CN221164721U (en) | 2024-06-18 |
Family
ID=91461573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322783225.6U Active CN221164721U (en) | 2023-10-17 | 2023-10-17 | Automatic detection equipment for circular runout of worm shaft end of worm shaft production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221164721U (en) |
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2023
- 2023-10-17 CN CN202322783225.6U patent/CN221164721U/en active Active
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