초록 ▼

In order to enable the shape of the surface of a tire including the shoulder sections thereof to be detected, a tire shape testing device comprises: a first linear light application means (10) for applying linear light to the tread section (8) of the tire; a second linear light application means (12

In order to enable the shape of the surface of a tire including the shoulder sections thereof to be detected, a tire shape testing device comprises: a first linear light application means (10) for applying linear light to the tread section (8) of the tire; a second linear light application means (12) for applying linear light to the sidewall sections (7) of the tire; a third linear light application means (13) for applying linear light to the shoulder sections (9) and to regions outside the shoulder sections (9); and image capturing means (16) for capturing the images of the linear light applied by the first linear light application means (10), the second light application means, and the third linear light applications means (13) and reflected by the surface of the tire.

대표청구항 ▼

1. A tire shape testing device that captures an image of linear light with which a surface of a tire including a sidewall section, a shoulder section, and a tread section has been irradiated and that detects a surface shape of the tire on the basis of the captured image of the linear light, the tire

1. A tire shape testing device that captures an image of linear light with which a surface of a tire including a sidewall section, a shoulder section, and a tread section has been irradiated and that detects a surface shape of the tire on the basis of the captured image of the linear light, the tire shape testing device comprising: a first light source configured to irradiate the tread section of the tire with a linear light beam;a second light source configured to irradiate the sidewall section of the tire with a linear light beam;a third light source configured to irradiate a region from the shoulder section of the tire to beyond the shoulder section with a linear light beam; andone or more cameras configured to capture images of the linear light beams emitted from the first light source, the second light source, and the third light source and reflected by the tire surface,wherein the linear light beams emitted from the first light source and the third light source overlap on a same line on the surface of the tire, andwherein the linear light beams emitted from the second light source and the third light source overlap on the same line on the surface of the tire. 2. The tire shape testing device according to claim 1, wherein the one or more cameras include a first camera and a second camera,wherein a first sensor unit including the first camera and the first light source is arranged so as to face the tread section of the tire,wherein a second sensor unit including the second camera, the second light source, and the third light source is arranged so as to face the sidewall section of the tire, andwherein the second camera included in the second sensor unit is configured to capture the image of the linear light beam emitted from the second light source and reflected by the tire surface and the image of the linear light beam emitted from the third light source and reflected by the tire surface. 3. The tire shape testing device according to claim 1, wherein the one or more cameras include a first camera and a second camera,wherein a first sensor unit including the first camera, the first light source, and the third light source is arranged so as to face the tread section of the tire,wherein a second sensor unit including the second camera and the second light source is arranged so as to face the sidewall section of the tire, andwherein the first camera included in the first sensor unit is configured to capture the image of the linear light beam emitted from the first light source and reflected by the tire surface and the image of the linear light beam emitted from the third light source and reflected by the tire surface. 4. The tire shape testing device according to claim 1, wherein the one or more cameras include a first camera and a second camera,wherein a first sensor unit including the first camera and the first light source is arranged so as to face the tread section of the tire,wherein a second sensor unit including the second camera and the second light source is arranged so as to face the sidewall section of the tire,wherein the third light source is located separately from the first sensor unit and the second sensor unit, andwherein at least one of the first camera included in the first sensor unit and the second camera included in the second sensor unit is configured to capture the image of the linear light beam emitted from the third light source and reflected by the surface of the tire. 5. The tire shape testing device according to claim 4, wherein the third light source is supported by a support capable of changing an installation position of the third light source. 6. The tire shape testing device according to claim 1, wherein the one or more cameras include a detector that detects the linear light beams,a plurality of lenses that focus the images of the linear light beams on the detector, anda region setting mirror that sets image capturing regions to be captured through the respective lenses. 7. The tire shape testing device according to claim 6, wherein two or more of the region setting mirrors are provided, each region setting mirror being set so that the image capturing regions captured through the respective lenses do not overlap and are discontinuous. 8. The tire shape testing device according to claim 7, wherein the image capturing region of one of the plurality of lenses is set so as to allow the tread section of the tire to be captured, and the image capturing region of another one of the plurality of lenses is set so as to allow the shoulder section of the tire to be captured. 9. The tire shape testing device according to claim 7, wherein the image capturing region of one of the plurality of lenses is set so as to allow the sidewall section of the tire to be captured, and the image capturing region of another one of the plurality of lenses is set so as to allow the shoulder section of the tire to be captured. 10. The tire shape testing device according to claim 6, wherein each lens is formed of a lens array. 11. The tire shape testing device according to claim 10, further comprising a correcting lens that corrects an optical magnification of each lens. 12. A tire shape testing method for capturing an image of linear light with which a surface of a tire including a sidewall section, a shoulder section, and a tread section has been irradiated and detecting a surface shape of the tire on the basis of the captured image of the linear light, the tire shape testing method comprising: irradiating each of the tread section of the tire and the sidewall section of the tire with a linear light beam, irradiating a region from the shoulder section of the tire to beyond the shoulder section with a linear light beam, and capturing images of the linear light beams reflected by the tire surface,wherein the linear light beams that irradiate the tread section of the tire and the shoulder section of the tire overlap on a same line on the surface of the tire,wherein the linear light beams that irradiate the sidewall section of the tire and the shoulder section of the tire overlap on the same line on the surface of the tire,wherein the linear light beam that irradiates the tread section of the tire is emitted from a first light source,wherein the linear light beam that irradiates the sidewall section of the tire is emitted from a second light source, andwherein the linear light beam that irradiates the region from the shoulder section of the tire to beyond the shoulder section is emitted from a third light source.