CN111044269A - A wear resistance test device for vehicle camera lens - Google Patents
A wear resistance test device for vehicle camera lens Download PDFInfo
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- CN111044269A CN111044269A CN201911380338.3A CN201911380338A CN111044269A CN 111044269 A CN111044269 A CN 111044269A CN 201911380338 A CN201911380338 A CN 201911380338A CN 111044269 A CN111044269 A CN 111044269A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/08—Testing mechanical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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Abstract
本发明提供了一种车载摄像头镜头的耐磨性试验装置，其通过设备以机械电子的方式摩擦镜头，不仅节省了人工，大大提高了工作效率，而且从摩擦镜头的力的控制以及试验结果的对比性上都有了很大的提升，包括底座和摄像头固定平台，摄像头固定平台上设置有至少一个摄像头固定型腔，摄像头固定平台的一侧通过支架上安装有驱动电机，驱动电机的输出轴竖直向下设置，驱动电机的输出轴的下端设置有能够随驱动电机的输出轴转动的连接板，连接板远离驱动电机的输出轴的一端上设置有活动安装的导向轴，导向轴的下端设置有镜头擦拭布安装座，镜头擦拭布安装座的下端面上设置有镜头擦拭布，导向轴的上端设置有砝码盘，砝码盘上设置有砝码。
The invention provides a wear resistance test device for the lens of a vehicle-mounted camera, which rubs the lens in a mechanical and electronic manner through the device, which not only saves labor, greatly improves the work efficiency, but also controls the force of rubbing the lens and the test results. The contrast has been greatly improved, including the base and the camera fixing platform. The camera fixing platform is provided with at least one camera fixing cavity, and a drive motor is installed on one side of the camera fixing platform through the bracket. The output shaft of the drive motor Vertically downward, the lower end of the output shaft of the driving motor is provided with a connecting plate that can rotate with the output shaft of the driving motor, and a guide shaft is movably installed on one end of the connecting plate away from the output shaft of the driving motor, and the lower end of the guide shaft A lens wiping cloth mounting seat is arranged, a lens wiping cloth is arranged on the lower end surface of the lens wiping cloth mounting seat, a weight plate is arranged on the upper end of the guide shaft, and a weight is arranged on the weight plate.
Description
Technical Field
The invention relates to the technical field of testing devices of vehicle-mounted cameras, in particular to a wear resistance testing device of a vehicle-mounted camera lens.
Background
The definition is one of the important indexes for measuring the camera. Generally, the image quality of a product with high definition is better, so that the product with definition at line 420 becomes the mainstream product of the reversing camera at present, and line 380 can be selected if the image quality is good. However, according to the different chip grades of the cameras and the different photosensitive elements, including the level of a debugging technician, the quality effects which may be presented by products in the same grade on the same chip are different, and on the contrary, the night vision effect of the products with high definition is reduced. The lens of the camera generally comprises a plastic lens and a glass lens, the plastic lens is obviously different from the glass lens, the plastic lens is very cheap, but the imaging effect is obviously inferior to that of glass. The plastic lens is made of plastic or resin, and the glass lens is made of glass. At present, in many small factories, in order to save cost and pursue high profit, cheap plastic lenses are used, although the price is attractive, the actual effect is not satisfactory, and the effects of yellow, dark and fuzzy pictures appear.
However, both plastic lenses and glass lenses are worn during daily and monthly use, for example, when a vehicle is washed in daily life, the car washing cloth inevitably rubs the lens of the vehicle-mounted camera in the process of wiping the vehicle body.
In order to improve the quality and durability of the vehicle-mounted camera, the wear resistance of the lens of the vehicle-mounted camera can be verified in the product research and development production, and the prior art has the following defects when the wear resistance test of the lens of the vehicle-mounted camera is carried out:
firstly, the manual friction lens is adopted, and the lens cannot be damaged only by friction with large force because the force of the manual friction lens cannot be controlled.
Secondly, when the manual friction lens is adopted, the hardness of the lens made of glass is high, the hardness of the glass lens is 695HK-723HK, which is equivalent to that of a common carbon steel cutter, and if the test is effective, the manual friction frequency is increased, so that the time and labor are wasted, and the efficiency is low.
Thirdly, when rubbing the lens manually, because a staff's both hands can only rub the wear-resisting test of a vehicle-mounted camera lens, if will rub two camera lenses and must increase again alone, greatly increased the personnel selection cost of company.
Disclosure of Invention
In order to solve the problems, the invention provides a wear resistance test device for a vehicle-mounted camera lens, which rubs the lens in a mechanical and electronic mode through equipment, so that not only is the labor saved and the working efficiency greatly improved, but also the force control of the friction lens and the contrast of test results are greatly improved.
The technical scheme is as follows: the utility model provides a wear resistance test device of on-vehicle camera lens which characterized in that: the device comprises a base, wherein a camera fixing platform is arranged on the base, at least one camera fixing cavity is arranged on the camera fixing platform, a support is arranged on one side of the camera fixing platform, a driving motor is arranged on the support, an output shaft of the driving motor is vertically and downwards arranged and positioned above the camera fixing platform, a connecting plate capable of rotating along with the output shaft of the driving motor is arranged at the lower end of the output shaft of the driving motor, a movably mounted guide shaft is arranged on one end, away from the output shaft of the driving motor, of the connecting plate, a lens wiping cloth mounting seat is arranged at the lower end of the guide shaft, lens wiping cloth is arranged on the lower end face of the lens wiping cloth mounting seat, a weight tray is arranged at the upper end of the guide shaft, weights are arranged on the weight tray and rotate along with the output shaft of the driving motor, the lens wiping cloth can rotate along with the output shaft of the driving motor to wipe the camera arranged in the camera fixing cavity.
Furthermore, the output shaft of driving motor has the axis of rotation through the coupling joint, the support includes the motor installation layer and sets up the bearing installation layer of motor installation layer below, be provided with on the bearing installation layer the bearing with the axis of rotation cooperation, the lower extreme of axis of rotation pass through the connecting seat with connecting plate fixed connection.
Further, be provided with photoelectric sensor on the bearing installation layer, install on the axis of rotation with can with photoelectric sensor complex metal separation blade.
Furthermore, a shaft hole is formed in one end, far away from the output shaft of the driving motor, of the connecting plate, a bushing is arranged in the shaft hole, and the guide shaft is movably installed in the bushing.
Furthermore, a threaded hole is formed in the side wall of the camera fixing cavity, a butterfly bolt is arranged on the threaded hole, a screw of the butterfly bolt penetrates through the threaded hole to extend into the camera fixing cavity and is fixedly connected with a movable pressing plate, the movable pressing plate can be matched with the camera fixing cavity to clamp the camera, and an object taking groove is formed in the camera fixing cavity.
Furthermore, an avoiding groove is formed in the camera fixing platform corresponding to the butterfly bolt, and a baffle which is flush with the upper surface of the camera fixing platform is arranged at the upper end of the avoiding groove.
Further, the lens wiping cloth is car washing cloth.
Furthermore, a threaded mounting hole is formed in the lens wiping cloth mounting seat and used for fixing the lens wiping cloth, and the threaded mounting hole avoids the camera on the wiping path of the lens wiping cloth.
Furthermore, a waterproof baffle is arranged on the base and positioned outside the camera fixing platform.
Furthermore, the camera fixing platform is installed on the base through a connecting upright post, a lower water opening is formed in the base, and a water collecting box is arranged at the lower end of the lower water opening.
Furthermore, an electrical junction box and a touch screen are further arranged on the base, and the electrical junction box and the touch screen can be electrically connected with the photoelectric sensor and the camera.
The invention provides a wear resistance test device for a vehicle-mounted camera lens, which rubs the vehicle-mounted camera lens in a mechatronic mode, and drives a lens wiping cloth to wipe the vehicle-mounted camera lens through a driving motor to perform a wear resistance test without manual wiping, so that the labor is greatly saved; meanwhile, in the wear resistance test device of the vehicle-mounted camera lens, the force applied when the lens is rubbed is stably simulated by controlling the mass of the weight in the weight tray, so that the lens and the lens wiping cloth are circularly rubbed with constant force all the time, the experimental conditions of the wear resistance test can be accurately set, and the damage to the lens caused by the friction of the lens by using large force can be known; a plurality of camera fixing cavities can be arranged on the camera fixing platform, so that a plurality of camera lenses can be simultaneously turned on the market, and the working efficiency is greatly improved; in addition, the wear resistance test device for the vehicle-mounted camera lens is provided with the photoelectric sensor, the rotating shaft is provided with the metal blocking piece which can be matched with the photoelectric sensor, the metal blocking piece penetrates through the sensing area of the photoelectric sensor, the photoelectric sensor sends a signal to record the times of the lens wiping cloth rubbing the lens, and the wear resistance life of the vehicle-mounted camera lens is judged through a comparison experiment of the rubbing times, so that the test has the contrast property and the persuasion property.
Drawings
Fig. 1 is a schematic view of a wear resistance test apparatus for a vehicle-mounted camera lens in embodiment 1 when the lens is not wiped;
fig. 2 is a schematic view of the abrasion resistance test apparatus for a vehicle-mounted camera lens in embodiment 1 when wiping the lens;
FIG. 3 is a schematic view of a lens wipe mount of the present invention;
fig. 4 is a schematic view of the abrasion resistance test apparatus for a vehicle-mounted camera lens in embodiment 2 when wiping the lens.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, wherein the drawings provided in the present embodiments illustrate the basic idea of the invention only in a schematic way, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complex.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Specific example 1:
referring to fig. 1, 2 and 3, the wear resistance test device for the vehicle-mounted camera lens of the invention comprises a base 1, a camera fixing platform 2 is arranged on the base 1, in this embodiment, 4 camera fixing cavities 3 are arranged on the camera fixing platform 2, a bracket 4 is arranged on one side of the camera fixing platform 2, a driving motor 5 is arranged on the bracket 4, the driving motor 5 adopts a stepping motor, an output shaft of the driving motor 5 is vertically arranged downwards and is positioned above the camera fixing platform 2, specifically, the output shaft of the driving motor 4 is connected with a rotating shaft 7 through a coupling 6, the bracket 4 comprises a motor mounting layer 401 and a bearing mounting layer 402 arranged below the motor mounting layer 401, the driving motor 5 is arranged on the motor mounting layer 401, a square bearing 8 arranged on the bearing mounting layer 402 is matched with the rotating shaft 7, and the lower end of the rotating shaft 7 is fixedly connected with a connecting plate 9 through a connecting seat 8, the connecting plate 9 can rotate along with the output shaft of the driving motor 4, one end of the connecting plate 9, which is far away from the output shaft of the driving motor 5, is provided with a shaft hole, a bush 10 is arranged in the shaft hole, a guide shaft 11 is movably installed in the bush 10, the lower end of the guide shaft 11 is provided with a lens wiping cloth installing seat 12, the lower end face of the lens wiping cloth installing seat 12 is provided with a lens wiping cloth 13, the upper end of the guide shaft 11 is provided with a weight tray 14, a weight 15 is arranged on the weight tray 14, and the lens wiping cloth 13 can wipe a camera 16 installed in the camera fixing cavity 3 along with the rotation of the output shaft of the driving motor 5.
Specifically, be provided with screw hole 17 on the lateral wall of the fixed die cavity 3 of camera, be provided with butterfly bolt 18 on the screw hole 17, butterfly bolt 18's screw rod passes screw hole 17 and stretches into in the fixed die cavity 3 of camera and fixedly connected with activity clamp plate 19, activity clamp plate 19 can cooperate centre gripping camera 16 with the fixed die cavity 3 of camera, be provided with on the fixed die cavity 3 of camera and get thing groove 20, conveniently fix and take out the camera, it is provided with and dodges groove 21 to correspond butterfly bolt on the camera fixed platform 2, it is provided with baffle 22 that flushes with the upper surface of camera fixed platform to dodge the upper end of groove 21, baffle 22 passes through bolt and camera fixed platform 2, the setting of baffle is to avoid the camera lens to wipe cloth 13 landing.
In the embodiment, the lens cleaning cloth 13 is made of car washing cloth, and may be replaced by other materials that may wear the lens of the camera in daily use, the lens cleaning cloth mounting seat 12 is provided with a threaded mounting hole 23 for fixing the lens cleaning cloth, the threaded mounting hole 23 avoids the camera on the cleaning path of the lens cleaning cloth, the lens cleaning cloth is locked on the lens cleaning cloth mounting seat by an inner hexagonal flat head screw, as shown in fig. 3, it can be seen that four threaded lens cleaning cloth mounting seat holes on the lens cleaning cloth mounting seat are uniformly distributed, because the friction path of the lens cleaning cloth is a circle when the device is operated, when the lens cleaning cloth mounting seat is locked on the guide shaft, two threaded mounting holes are outside the circle of the cleaning path, and two threaded mounting holes are inside the circle of the cleaning path, so that the screw is prevented from contacting the lens during cleaning, if the carwash cloth needs to be changed, the guide shaft is movable, and because the guide shaft is long enough, through mentioning the guide shaft, the enough space that has between camera lens wiping cloth and the camera uses hexagon spanner dismouting hexagon socket head cap screw, easy dismounting can be guaranteed.
In addition, in the embodiment, the bearing mounting layer 402 is provided with the photoelectric sensor 24, the rotating shaft 7 is provided with the metal baffle 25 which can be matched with the photoelectric sensor 24, when the metal baffle passes through the sensing area of the photoelectric sensor, the photoelectric sensor sends out a signal to record the number of times that the lens wiping cloth rubs the lens, and in the embodiment, the model of the photoelectric sensor 24 is PM-Y64.
In addition, a waterproof baffle 26 is arranged on the base 1 and outside the camera fixing platform 2, the camera fixing platform 2 is installed on the base 1 after being lifted by a connecting upright post 27, a drainage port 28 is arranged on the base 1, and a water collecting box 29 is arranged at the lower end of the drainage port 28.
Theoretically, as long as the camera fixing platform is large enough, the connecting plate is long enough, N camera cavities can be formed in the wiping path, the size of the camera fixing platform and the length of the connecting plate are determined, the manufacturing cost of the equipment and the requirements of a company are considered, four camera fixing cavities are arranged in the embodiment, and the adjustment to other numbers can be considered.
The following describes the operation of the wear resistance test apparatus for the vehicle-mounted camera lens of the present embodiment:
installing car washing cloth, wherein the car washing cloth is arranged right above the baffle and avoids the camera to fix the cavity;
the vehicle-mounted camera is placed in the camera cavity, the butterfly bolt is rotated at the moment to push the movable stop block, so that the movable stop block clamps and fixes the vehicle-mounted camera, the heights of all clamped and fixed vehicle-mounted camera lenses are kept consistent, and the vehicle-mounted camera lenses can be rubbed by the vehicle washing cloth;
weights are placed on the weight tray, force used in car washing is simulated, weight of the weights is transmitted to car washing cloth through the guide shaft, and in a test, the car washing cloth rubs the lens to transmit force of the weights to the lens again, so that force in car washing is simulated;
in order to simulate the actual car washing condition, the car washing cloth needs to be kept moist during the test, so that a water spraying kettle can be used for spraying water to the car washing cloth at intervals in the running process of equipment, the sprayed water is foggy during manual water spraying, people are not required to be injured by the sprayed water during the running of the equipment, a waterproof baffle only needs to prevent the dripping water from splashing because hands do not directly contact with the equipment, the height requirement on the waterproof baffle is not met, and the water collecting box is arranged for collecting the redundant water during water spraying;
starting the equipment, wherein the stepping motor starts to rotate to drive the car washing cloth to rotate, the metal blocking piece fixed on the rotating shaft also rotates at the moment, and when the metal blocking piece passes through an induction area of the photoelectric sensor, the photoelectric sensor sends out a signal to record the friction times, wherein the friction times are equal to the number of turns of the stepping motor;
after the friction lens is finished, the car washing cloth is reset to leave the camera, then the vehicle-mounted camera is taken out, and the abrasion condition of the vehicle-mounted camera can be observed.
In order to verify the wear resistance of the vehicle-mounted camera lens, a wear resistance test device of the vehicle-mounted camera lens is provided, the wear resistance test device has the functions that the lens of the vehicle-mounted camera lens is rubbed in a mechatronic mode, the ground vehicle-mounted camera lens is connected with a power-on picture to be viewed as an imaging effect, the wear resistance service life of the vehicle-mounted camera lens is judged through a comparison picture experiment of the rubbing times, when a vehicle is washed, a vehicle washing cloth can wash the whole lens surface, only the arched side of the lens can be ground in the rubbing process because the vehicle-mounted camera lens is a spherical surface, but the strength of the surface is the same because the lens is made of glass materials, only the arched side is ground without influencing the reliability of the test, the invention rubs the vehicle-mounted camera lens in a mechatronic mode, not only ensures the stability of the force of the rubbing lens, but also lightens the working strength of workers, and can simultaneously test a plurality of lenses, the working efficiency is improved, and more powerful data support is provided for the wear-resisting test of the lens through the recording of the friction times and the control of the friction force.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a wear resistance test device of on-vehicle camera lens which characterized in that: the device comprises a base, wherein a camera fixing platform is arranged on the base, at least one camera fixing cavity is arranged on the camera fixing platform, a support is arranged on one side of the camera fixing platform, a driving motor is arranged on the support, an output shaft of the driving motor is vertically and downwards arranged and positioned above the camera fixing platform, a connecting plate capable of rotating along with the output shaft of the driving motor is arranged at the lower end of the output shaft of the driving motor, a movably mounted guide shaft is arranged on one end, away from the output shaft of the driving motor, of the connecting plate, a lens wiping cloth mounting seat is arranged at the lower end of the guide shaft, lens wiping cloth is arranged on the lower end face of the lens wiping cloth mounting seat, a weight tray is arranged at the upper end of the guide shaft, weights are arranged on the weight tray and rotate along with the output shaft of the driving motor, the lens wiping cloth can rotate along with the output shaft of the driving motor to wipe the camera arranged in the camera fixing cavity.
2. The wear resistance test device for the vehicle-mounted camera lens according to claim 1, characterized in that: the output shaft of the driving motor is connected with a rotating shaft through a coupler, the support comprises a motor installation layer and a bearing installation layer arranged below the motor installation layer, a bearing is arranged on the bearing installation layer and matched with the rotating shaft, and the lower end of the rotating shaft is fixedly connected with the connecting plate through a connecting seat.
3. The wear resistance test device for the vehicle-mounted camera lens according to claim 1, characterized in that: the bearing installation layer is provided with a photoelectric sensor, and the rotating shaft is provided with a metal baffle sheet which can be matched with the photoelectric sensor.
4. The wear resistance test device for the vehicle-mounted camera lens according to claim 1, characterized in that: one end of the connecting plate, which is far away from the output shaft of the driving motor, is provided with a shaft hole, a bushing is arranged in the shaft hole, and the guide shaft is movably arranged in the bushing.
5. The wear resistance test device for the vehicle-mounted camera lens according to claim 1, characterized in that: the side wall of the camera fixing cavity is provided with a threaded hole, a butterfly bolt is arranged on the threaded hole, a screw of the butterfly bolt penetrates through the threaded hole to stretch into the camera fixing cavity and is fixedly connected with a movable pressing plate, the movable pressing plate can be matched with the camera fixing cavity to clamp the camera, and an object taking groove is formed in the camera fixing cavity.
6. The wear resistance test device for the vehicle-mounted camera lens according to claim 5, characterized in that: the camera fixing platform is provided with an avoiding groove corresponding to the butterfly bolt, and the upper end of the avoiding groove is provided with a baffle which is flush with the upper surface of the camera fixing platform.
7. The wear resistance test device for the vehicle-mounted camera lens according to claim 1, characterized in that: the lens wiping cloth is car washing cloth.
8. The wear resistance test device for the vehicle-mounted camera lens according to claim 1, characterized in that: the lens wiping cloth installing seat is provided with a threaded installing hole for fixing the lens wiping cloth, and the threaded installing hole avoids the camera on the wiping path of the lens wiping cloth.
9. The wear resistance test device for the vehicle-mounted camera lens according to claim 1, characterized in that: the camera fixing platform is installed on the base through a connecting upright post, a lower water opening is formed in the base, and a water collecting box is arranged at the lower end of the lower water opening.
10. The wear resistance test device for the vehicle-mounted camera lens according to claim 1, characterized in that: the base is further provided with an electric junction box and a touch screen, and the electric junction box and the touch screen can be electrically connected with the photoelectric sensor and the camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911380338.3A CN111044269B (en) | 2019-12-27 | 2019-12-27 | A wear resistance test device for vehicle-mounted camera lenses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911380338.3A CN111044269B (en) | 2019-12-27 | 2019-12-27 | A wear resistance test device for vehicle-mounted camera lenses |
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| CN111044269A true CN111044269A (en) | 2020-04-21 |
| CN111044269B CN111044269B (en) | 2025-03-18 |
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| JP2003295131A (en) * | 2002-04-03 | 2003-10-15 | Seiko Epson Corp | Test method and apparatus for evaluating abrasion resistance of spectacle lens |
| CN102944512A (en) * | 2012-11-03 | 2013-02-27 | 中国矿业大学 | Test machine and test method for real-time and dynamic observation of end surface torsion friction and abrasion of friction interface |
| CN109632463A (en) * | 2018-11-30 | 2019-04-16 | 深圳市英柏检测技术有限公司 | Sole abrasion resistance tester |
| CN208953396U (en) * | 2018-10-30 | 2019-06-07 | 昆山向科检测仪器有限公司 | Chair castor abrasion wear test machine |
| CN110567827A (en) * | 2019-08-20 | 2019-12-13 | 宁波市产品质量检验研究院 | Non-stick pan wear resistance test device |
| CN211824968U (en) * | 2019-12-27 | 2020-10-30 | 苏州智华汽车电子有限公司 | Wear resistance test device for vehicle-mounted camera lens |
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2019
- 2019-12-27 CN CN201911380338.3A patent/CN111044269B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003295131A (en) * | 2002-04-03 | 2003-10-15 | Seiko Epson Corp | Test method and apparatus for evaluating abrasion resistance of spectacle lens |
| CN102944512A (en) * | 2012-11-03 | 2013-02-27 | 中国矿业大学 | Test machine and test method for real-time and dynamic observation of end surface torsion friction and abrasion of friction interface |
| CN208953396U (en) * | 2018-10-30 | 2019-06-07 | 昆山向科检测仪器有限公司 | Chair castor abrasion wear test machine |
| CN109632463A (en) * | 2018-11-30 | 2019-04-16 | 深圳市英柏检测技术有限公司 | Sole abrasion resistance tester |
| CN110567827A (en) * | 2019-08-20 | 2019-12-13 | 宁波市产品质量检验研究院 | Non-stick pan wear resistance test device |
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Address after: 641400 Chengdu Future Science and Technology City, Jianyang City, Chengdu, Sichuan Province (No. 11 Lianchuang Street, Chengdu East New Area) Patentee after: Chengdu Tianfu Zhihua Technology Co.,Ltd. Country or region after: China Address before: 215200 No. 1268 traffic road, Wujiang economic and Technological Development Zone, Suzhou, Jiangsu Patentee before: SUZHOU INVO AUTOMOTIVE ELECTRONICS Co.,Ltd. Country or region before: China |