Patent Application
20130233991
1. Technical Field
The present disclosure relates to adjusting devices, and more particularly to an adjusting device for adjusting a height of an object relative to a support surface.
2. Description of Related Art
Referring to
Therefore, there is room for improvement in the art.
The components of the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the embodiments of the adjusting device. Moreover, in the drawings, like reference numerals designate corresponding parts throughout several views.
Referring to
The adjusting portion 140 is slidably received in the through hole 121. The adjusting portion 140 includes an adjusting post 142 and two fixing posts 144 fixed to opposite ends of the adjusting post 142. The adjusting post 142 is substantially cylindrical, and is slidably received in the through hole 121. The diameter of the adjusting post 142 is slight less than the diameter of the through hole 142. The adjusting post 142 defines a plurality of first threads 143. The fixing posts 144 are coaxial with the adjusting post 142, and are adapted to hold the object 200.
The driving portion 160 includes two nuts 161 in the embodiment. The nuts 161 threadedly engage with the adjusting post 142 and are arranged at opposite sides of the support base 120. The size of each nut 161 is less than the size of the through hole 121. Each nut 161 defines an engaging hole 162 for receiving the adjusting post 142. The inner surface of the engaging hole 162 defines a plurality of second threads 164. The second threads 164 mate with the first threads 143, such that the nuts 161 threadedly engage with the adjusting post 142. In other embodiment, the driving portion 160 includes only one nut 161 rotatably secured to the support base 120, and the distance between the nut 161 and the support base 120 is unchanged.
The limiting mechanism 180 includes at least one protrusion 182 arranged at the inner surface of the through hole 121 and at least one recess portion 184 arranged at the adjusting post 142 and corresponding to the at least one protrusion 182. The at least one recess portion 184 engages with the at least one protrusion 182 to prevent the adjusting portion 140 from rotating when the adjusting portion 140 is driven to move by the driving portion 160. In the embodiment, the limiting mechanism 180 includes two protrusions 182 and two recess portions 184 corresponding to the protrusions 182 respectively. The protrusions 182 are symmetrically arranged at the inner surface of the through hole 121. The recess portions 184 are defined at opposite sides of the adjusting post 142 and extend in a direction parallel to the adjusting post 142. When the adjusting portion 140 is received in the through hole 121, the recess portions 184 respectively receives the protrusions 182 to prevent the adjusting portion 140 from rotating.
Referring again to
To increase the height of the object 200 relative to the support base 120: first, the nut above the support base (referred herein as the top nut) is unscrewed for a few or more than a few threads depending on the intended height to be increased; Second, rotate the nut 161 under the support base 120 (referred herein as the bottom nut) in a first direction (for example, anticlockwise), because the bottom nut is stopped by the support base 120, the adjusting post 142 is driven to move upwardly, and the height of the objected 200 relative to the support base 120 is increased. At the same time, the protrusions 182 engage with the recess portions 184 to prevent the adjusting post 142 from rotating relative to the support base 120. As a result, the height of the objected 200 relative to the support base 120 is increased with the object 200 without rotation. Furthermore, after the height of the object 200 is adjusted to a desired position, the top nut is operated to abut the support plate 120, and cooperates with the bottom nut to lock the adjusting portion 140 to position the object 200 in the desired position.
To decrease the height of the object 200 relative to the support base 120: first, the bottom nut is unscrewed for a few or more threads; Second, rotate the top nut in a second direction opposite to the first direction (for example, clockwise), because the top nut is stopped by the support base 120, the adjusting post 142 is driven to move downwardly, and the height of the objected 200 relative to the support base 120 is decreased. At the same time, the protrusions 182 engage with the recess portions 184 to prevent the adjusting post 142 from rotating relative to the support base 120. As a result, the height of the objected 200 relative to the support base 120 is decreased with the object 200 without rotation. Furthermore, after the height of the object 200 is decreased to a desired position, the bottom nut is operated to abut the support plate 120, and cooperates with the top nut to lock the adjusting portion 140 to position the object 200 in the desired position.
By assistance the adjusting device 100, the height of the object 200 is adjusted with the object 200 without rotation.
It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the disclosure or sacrificing all of its material advantages, the examples hereinbefore described merely being preferred or exemplary embodiments of the disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201220086930.X | Mar 2012 | CN | national |
