KR920702958A - Selectively controlled keyboard support - Google Patents

Abstract

A keyboard support apparatus has a mounting bracket (11), a keyboard support bracket (15) pivotally connected via parallel bars (20, 25) permitting change in altitude of bracket (15). The mecanism may be locked against change in altitude by means of a formation (58) associated with a bar (20) which is interengageable with a formation (54) associated with bracket (15) by means of a laterally operable lever (40) resiliently biased by a spring plate (52) towards engagement. In a preferred embodiment (figures 13 to 15) support bracket (15) may be tilted about a pivot (22) and the mechanism permits one handed selective operation of altitude adjustment or tilt adjustment.

Description

Selectively controlled keyboard support

[Brief Description of Drawings]

Embodiments of the present invention are described with reference to the accompanying drawings in the following.

1 is a schematic diagram of a keyboard support device viewed from a side of elevation in an elevated state.

FIG. 2 is a schematic diagram of the keyboard support device of FIG. 1 showing the lowered state. FIG.

5 is a partial side view of the first and second degree arrangements with fastening means in accordance with the present invention.

6 is a detailed view of plate 30 of FIG.

9 is a schematic perspective view of a second embodiment of the present invention.

Since this is an open matter, no full text was included.

Claims (27)

At least one linkage bar pivotally connected to the mounting bracket, the support member, the mounting bracket and the support member, wherein the support member and the bar are adapted to move to a vertical reference plane between the raised or lowered position relative to the mounting bracket. A securing means for securing the device against said movement, said securing means comprising: first means defining a first configuration coupled with a support member, second means defining a second configuration coupled with a bar, said configuration supporting member Inwardly engaged to prevent movement of the bar relative to, and lever means acting to release the configuration by lateral movement of the first means relative to the second means and an elastic biasing of the configuration to the internal engagement. Keyboard support consisting of a means. 2. An apparatus according to claim 1, wherein the first means comprises a spring plate installed in the support member and extending in a vertical plane parallel to the reference plane, wherein only the spring defines a plurality of hole shapes. The apparatus of claim 2 wherein the aperture is slot shaped. The device of claim 2 having a pin shape of a bar that engages a hole in a spring plate. The device of claim 3, wherein the second configuration is an extended protrusion. The device according to claim 2, wherein the lever handle is installed on the spring plate. The apparatus of claim 1 wherein the support member is adapted to be inclined with respect to the life axis. 8. An apparatus according to claim 7, wherein the first means comprises a spring tube having a plurality of holes disposed in the support member and arranged in at least two concentric arcs. The method of claim 1, wherein the support member is installed to adjust the inclination with respect to the life axis, and further comprises third means defining a third configuration coupled with the support member and a fourth configuration coupled with the bar; And the fourth arrangement is internally engaged to prevent tilting of the support member relative to the bar. 10. The apparatus of claim 9, wherein the lever can selectively release the first from the second configuration or the third from the fourth configuration. 10. The apparatus of claim 9, wherein the second means comprises a first spring plate mounted to the support member and extending in a vertical plane parallel to the reference plane, wherein the first spring plate defines a plurality of first hole shapes. The apparatus of claim 11, wherein the third means incorporates a second spring plate defining a plurality of third hole shapes. 13. The apparatus of claim 12, wherein the spring arm is mounted to a first spring plate that carries a fourth configuration that engages internally with one of the third bore shapes. At least one linkage bar pivotally connected to the mounting bracket, the support member, the mounting bracket and the support member, wherein the support member and the bar are moved to a vertical reference plane between the raised or lowered position relative to the mounting bracket and It is applied to bevel. And securing means for securing the device with respect to the movement, wherein the securing means selectively loosens either tilt movement or vertical movement. At least one linkage bar pivotally connected to the mounting bracket, the supporting member, the mounting bracket and the supporting member, wherein the supporting member and the bar are adapted to adjust the height between the raised or lowered position relative to the mounting bracket, Is connected to the bar axis, wherein the support is applied to adjust the inclination with respect to the horizontal axis, consisting of the fixing means for fixing the device against the height adjustment and the tilt adjustment and the fixing means is one of the inclination adjustment or height adjustment A keyboard support which allows for selective loosening with one hand while preventing the other of the adjustment. 15. The apparatus of claim 14, further comprising: a first means comprising a first configuration biased toward engagement in the interior with a second configuration coupled to the bar to prevent height adjustment, coupled with a support member to prevent the tilt adjustment; And a second means biased towards the inner engagement with the fourth configuration and selection means acting with one hand to release one of the first configuration from the second configuration or the third configuration from the fourth configuration. 16. The spring plate of claim 15, wherein the spring plate is pivotally connected to the bar in the first installation, the lever installed in the spring plate in the second installation, the spring plate deformable with respect to the first installation by the action of the lever to release the first configuration from the second. And a first configuration coupled in the middle of the installation and thereby biased toward engagement with the second configuration. 18. The method of claim 17, wherein the spring plate has a portion that forms an extension of the bar and has a third configuration that engages therein with the shape of the lever, the third configuration being adapted to the operation of the lever to deform the plate adjacent to the second installation. The device released from the fourth. The keyboard support of claim 1, wherein the linkage bar is a pair of parallel linkage bars. 20. The keyboard support of claim 19, wherein the second configuration is coupled to a third linkage bar extending at an angle parallel to the first and second linkage bars. 21. The apparatus of any one of claims 1 to 20, wherein the two bars comprise at least three linkage bars that are parallel and the third linkage is pivotally connected to the mounting bracket by means of jointly coupling the slots and the pins. 22. The device of claim 21, wherein pins co-engaging with the slots are installed for off-center adjustment. 23. The device of claim 20, wherein the third linkage bar is substantially horizontal when the upper surface of the mounting bracket and the support member are horizontal. Substantially as described with reference to FIGS. 1 to 5. Substantially as described with reference to FIGS. 6-8. Substantially as described with reference to FIGS. 13-15. Substantially as described with reference to FIGS. 16-18. ※ Note: The disclosure is based on the initial application.