Camera mounting device for a vehicle
Disclosed is a camera mounting apparatus for a vehicle that attaches the camera to the vehicle, isolates the camera from vibration at the mounting points, and accommodates thermal expansion and contraction of the vehicle and the mounting structure. The apparatus includes a camera mounting beam coupled to the camera, and one or more elastomeric vibration isolators coupled to an attachment device and coupled to the camera mounting beam. The apparatus also includes a spherical bearing coupled to the attachment device, wherein the spherical bearing is configured to accommodate misalignment of the attachment device, and one or more spring washers to generate a force holding the one or more elastomeric vibration isolators and spherical bearing in positions.
1. A method for stabilizing a structure mounted to a vehicle, comprising:
attenuating, by a center mount and one or more end mounts each including an elastomeric device, vibration at the vehicle from the structure, wherein each elastomeric device is configured to attenuate vibration, and wherein the center mount is configured to prevent a lateral motion of the structure through the center mount;
wherein each elastomeric device included in the one or more end mounts is sandwiched under a bolt between a flat washer and a first surface of a spacer, wherein two adjacent Belleville washers with a third surface are coupled to a second surface of the spacer, wherein a fourth surface of the two adjacent Belleville washers is coupled to a fifth surface of a spherical washer and a sixth surface of the spherical washer is coupled to a spherical bearing.
2. The method of claim 1 , wherein the one or more end mounts each includes an attachment device that slides in an obround opening in the structure, and wherein the center mount passes through a round opening and does not slide in in the structure.
3. The method of claim 1 , wherein the elastomeric devices are structured to absorb vertical vibration from the vehicle.
4. The method of claim 1 , wherein the vehicle is a truck.
5. The method of claim 1 , wherein the structure is coupled to a sensor.
6. The method of claim 1 , wherein the spherical washer has a concave portion that mates with a convex portion.
7. An apparatus, comprising:
an elongated element;
a center mount coupled via a center coupling to the elongated element at a fixed position along the elongated element, wherein the center coupling comprises an elastomeric material configured to attenuate vibration at a vehicle from the elongated element; and
one or more end mounts coupled via one or more end couplings to the elongated element at one or more second positions along the elongated element, wherein the one or more end couplings comprise the elastomeric material configured to attenuate vibration at the vehicle from the elongated element, and wherein the one or more end couplings accommodate lateral expansion or contraction of the elongated element;
wherein each of the one or more end mounts comprises: a bolt, a flat washer, a spacer, one or more Belleville washers, and a spherical bearing.
8. The apparatus of claim 7 , wherein the one or more end mounts each include an attachment device that slides in an obround slot in the elongated element.
9. The apparatus of claim 7 , wherein the one or more end mounts are structured to facilitate the elongated element to slide laterally in response to a temperature difference.
10. The apparatus of claim 7 , wherein the one or more end mounts are structured to facilitate the elongated element to slide laterally in response to a difference in a coefficient of expansion between the vehicle and the elongated element.
11. The apparatus of claim 7 , wherein the center coupling and the one or more end couplings absorb vertical vibration from the vehicle.
12. The apparatus of claim 7 , wherein the elongated element is configured to couple to a sensor.
13. The apparatus of claim 7 , wherein the spherical washer has a concave portion that mates with a convex portion of the spherical washer.
14. An apparatus for isolating vibration from a device, comprising:
a mounting beam coupled to the device;
one or more vibration isolators coupled to the mounting beam;
a spherical bearing coupled to an attachment device, wherein the spherical bearing is configured to accommodate misalignment of the attachment device; and
a spherical washer structured to adjust a planar surface of the spherical bearing along the attachment device;
wherein each vibration isolator comprises an elastomeric device that is sandwiched under a bolt between a flat washer and a first surface of a spacer, wherein two adjacent Belleville washers with a third surface are coupled to a second surface of the spacer, wherein a fourth surface of the two adjacent Belleville washers is coupled to a fifth surface of a spherical washer and a sixth surface of the spherical washer is coupled to a spherical bearing.
15. The apparatus of claim 14 , wherein the one or more vibration isolators are formed from one or more materials including polyurethane, rubber, closed cell foam.
16. The apparatus of claim 14 , wherein the mounting beam includes an obround opening within which the one or more vibration isolators, the spherical bearing, and one or more spring washers are configured to slide in response to thermal expansion or contraction of the mounting beam relative to the device.
17. The apparatus of claim 14 , wherein one or more sensors are coupled to the mounting beam, each of the one or more sensors having a desired angle and location with respect to the mounting beam such that each of the one or more sensors obtains a desired field of view.
18. The apparatus of claim 14 , further comprising:
one or more spring washers to generate a force holding the one or more vibration isolators and spherical bearing in positions, wherein the spherical washer has a concave portion that mates with a convex portion of the spherical washer.