Handheld scratch resistance testing device

Abstract

The utility model belongs to the technical field of automobile part experimental equipment, and provides a handheld scratch resistance testing device, which comprises a main bearing shaft, a weight and a scratch head, the weight is arranged at the upper end of the main bearing shaft, the scratch head is arranged at the lower end of the main bearing shaft, an inch sleeve is sleeved in the main bearing shaft, the inch sleeve is overlapped with the main bearing shaft, and the inch sleeve is connected with the scratch head. And the main bearing shaft can slide up and down in the inch sleeve. The testing device has the advantages that the testing device can be used for directly testing parts with irregular shapes, is handheld, is convenient to carry, can be used for quickly completing the testing at different places, and is simple in overall structure and convenient to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts experimental equipment and relates to a handheld scratch resistance testing device. Background Art

[0002] Automotive interior and exterior decorative parts can play a role in beauty and protection during the use of the car. Since most of them are made of plastic parts, they are easily scratched by hard objects during production, transportation, and use, leaving scratches on the surface, causing changes in color and gloss. Scratches may even cause stress concentration, which ultimately affects the appearance and durability of the parts. Manufacturers usually use scratch resistance tests to evaluate the scratch resistance of materials, so as to select materials and production processes that meet the requirements. Scratch resistance testing refers to using a specified scratch head to perform a scratch test under a specified pressure. After the test, the surface of the material will show different damage conditions (discoloration, scratches, etc.), so as to evaluate the scratch resistance of the material. The current conventional testing methods require the use of flat test pieces or cutting flat and regular test pieces from the parts, and then placing them on special test equipment for testing. It is impossible to test on irregularly shaped parts. If you need to test quickly at different locations, it is inconvenient to carry the equipment. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a handheld scratch resistance testing device which is simple to manufacture, easy to operate and can greatly improve the experimental efficiency in view of the current status of the prior art.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: a handheld scratch resistance testing device, characterized in that it includes a main bearing shaft, a weight and a scratch head, the weight is installed on the upper end of the main bearing shaft, and the scratch head is installed on the lower end of the main bearing shaft, the main bearing shaft is sleeved with an inch sleeve, the inch sleeve is overlapped with the main bearing shaft, and the main bearing shaft can slide up and down in the inch sleeve.

[0005] In the above-mentioned handheld scratch resistance testing device, a protective cover is installed on the outside of the sleeve.

[0006] In the above-mentioned handheld scratch resistance testing device, a nut is arranged between the protective sleeve and the inch sleeve, and the nut fixes the protective sleeve and the inch sleeve.

[0007] In the above-mentioned handheld scratch resistance testing device, a screw is arranged between the scratch head and the bearing shaft, and the screw connects the scratch head and the bearing shaft.

[0008] Compared with the prior art, the utility model has the advantage that it can realize direct testing on parts with irregular shapes. At the same time, the testing device is handheld and easy to carry, and can realize rapid testing at different locations. The overall structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the main structure of the handheld scratch resistance testing device;

[0010] Figure 2 This is a schematic diagram of the side structure of the handheld scratch resistance testing device. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0012] In the description of the present invention, it is necessary to understand that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0013] In the figure, the main bearing shaft 100; the weight 200; the scraper head 300; the inch sleeve 400; the protective sleeve 500; the nut 600; and the screw 700.

[0014] like Figure 1 and Figure 2As shown, the handheld scratch resistance testing device comprises a main bearing shaft 100, a weight 200 and a scratch head 300. The weight 200 is installed at the upper end of the main bearing shaft 100, and the scratch head 300 is installed at the lower end of the main bearing shaft 100. Here, the weight 200 is the load required for the test, and the weight of the weight 200 can be freely selected. An inch sleeve 400 is sleeved inside the main bearing shaft 100, and the inch sleeve 400 overlaps with the main bearing shaft 100. The main bearing shaft 100 can slide up and down in the inch sleeve 400. For the convenience of operation, a protective sleeve 500 is installed outside the inch sleeve 400, and a nut 600 is arranged between the protective sleeve 500 and the inch sleeve 400. The nut 600 fixes the protective sleeve 500 and the inch sleeve 400, so that the installation of the protective sleeve 500 is more reliable, and the scratch head A screw 700 is provided between 300 and the bearing shaft, and the screw 700 connects the scraper head 300 and the bearing shaft. Here, the screw 700 is used to connect the scraper head 300 and the bearing shaft, and is used when replacing the scraper head 300. Before the test, a suitable scraper head 300 is selected and then installed on the main bearing shaft 100. Then, according to the load required for the test, the load is the weight of the main bearing shaft 100 itself plus the mass of the weight 200, and a suitable weight 200 is selected and installed on the upper end of the main bearing shaft 100. After the above is completed, the protective cover 500 can be held by hand to make the scraper head 300 move at a uniform speed on the surface of the part. The pressure on the surface of the part is the load of the weight 200 plus the self-weight of the main bearing shaft 100. After completion, check whether the surface of the part has scratches, gloss and color changes and other abnormalities.

[0015] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the scope defined by the spirit of the present invention.

Claims

1. A handheld scratch resistance testing device, characterized in that: It includes a main bearing shaft, a weight and a scraper head. The weight is installed on the upper end of the main bearing shaft, and the scraper head is installed on the lower end of the main bearing shaft. An inch sleeve is sleeved inside the main bearing shaft, and the inch sleeve overlaps the main bearing shaft. The main bearing shaft can slide up and down in the inch sleeve.

2. A handheld scratch resistance testing device according to claim 1, characterized in that: A protective cover is installed on the outside of the inch sleeve.

3. A handheld scratch resistance testing device according to claim 2, characterized in that: A nut is arranged between the protective sleeve and the inch sleeve, and the nut fixes the protective sleeve and the inch sleeve.

4. A handheld scratch resistance testing device according to claim 3, characterized in that: A screw is arranged between the scraping head and the bearing shaft, and the screw connects the scraping head and the bearing shaft.

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