JPH0426906Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a mounting board suitable for use when operating the keyboard of a word processor, personal computer, or the like.

[Conventional technology]

As is well known, when operating office automation equipment such as word processors and personal computers,
The operator extends both hands over the keyboard and hits keys. At this time, the operator must support his or her hands, wrists, arms, etc., while pressing the keys, which increases the difficulty of the operation and increases the degree of fatigue if the operation lasts a long time. As a countermeasure to this problem, the invention disclosed in Japanese Patent Application Laid-Open No. 58-45981 provides a height-adjustable armrest for supporting the operator's hand or arm. In such a known armrest, a plurality of rotating devices including a vertical screw feeding mechanism are installed on both sides of a base, and a horizontally long arm support rod is supported via these rotating devices so as to be vertically movable. With this armrest, the operator's wrists can be placed and supported on the arm support bar, making it easier to type keys on the keyboard.Furthermore, by turning the knobs on each rotating device, the operator can support the arm support bar by placing it on the arm support bar. Adjusting the height keeps the operator's hands at the proper height.

[Problem that the idea aims to solve]

In the case of the above-mentioned known technology, since the operator's hand can be supported at an appropriate height, it appears to have great practicality as an armrest. However, in this known technology, when adjusting the height of the arm support bar, it is required to rotate a plurality of mutually independent rotating devices in synchronization and synchronization, and if this is not done properly, the arm support bar As the rod becomes tilted, the screw feeding mechanism of each rotating device becomes immobile, which in turn causes the arm support rod to be unable to be raised or lowered. Therefore, careful consideration is required to adjust the height of the arm support bar, and such adjustment becomes troublesome. In order to solve this problem, technical improvements and an increase in the number of new parts are forced, which inevitably increases the cost of the product. In view of these technical problems, the present invention aims to provide a keyboard operation mounting board that can easily adjust the height, simplify the structure, and reduce the cost of the product.

[Means to solve the problem]

In order to achieve the intended purpose, the keyboard operation mounting board according to the present invention includes a substrate for mounting the keyboard, a support for supporting the operator's hands, and a support for vertically moving the support. a camshaft of
and a handle for rotating the camshaft, and the board is provided with a pair of guide walls rising from both sides of its front end, and each guide wall has an open upper end and extends in the vertical direction. guide grooves are formed therein, and the support body has a box shape that is long in the width direction with an open lower surface, and has dimensions that allow it to span and cover both the guide walls. A plurality of cams having the same shape are provided on the outer circumferential surface of the camshaft in the same direction with axial spacing maintained, and the handle is freely connectable to an end of the camshaft. The camshaft is housed within the support body and is rotatably supported at both ends by both side walls of the support body, and the camshaft end protrudes outside the support body through the side walls of the support body. The handle is attached to the camshaft, and the support body equipped with the camshaft and the handle is vertically movable over the top surface of the front end of the board so as to cover both the guide walls. are fitted into the guide grooves of both guide walls, and each cam is in contact with the upper surface of the front end of the base plate.

[Effect]

When using the keyboard operation mounting board according to the present invention, the keyboard is placed on the substrate, and the front edge of the keyboard and the support body are placed close to and parallel to each other. In the keyboard operation mounting board of the present invention, when the camshaft is rotated forward and backward through the handle, each cam of the camshaft provided on the support side
Since it is displaced in the rotational direction of the camshaft while in contact with the upper surface of the substrate, and the support body is raised and lowered, the height of the support body can be adjusted. After such adjustment, the operator can place his hands on the support and extend his fingertips over the keyboard to comfortably type keys.

【Example】

An embodiment of the keyboard operation mounting board according to the present invention will be described with reference to the drawings. In Figures 1 and 2, 11 is the keyboard K
21 is a support for supporting the operator's hand, 31 is a camshaft for moving the support 21 up and down, and 41 is a handle for rotating the camshaft 31. These members for constructing the keyboard operation mounting board are made of, for example, synthetic resin and/or metal, and each member has the following structural shape. In the case of the substrate 11, a pair of guide walls 12a, 12b rising from both sides of the front end are integrally formed, and each guide wall 12a, 12b has a guide groove 13a, which is open at the upper end and extends in the vertical direction.
13b are formed respectively. Furthermore, a plurality (two) of protrusions 14a and 14b are integrally formed on the upper surface of the front end of the substrate 11 at intervals in the width direction of the substrate 11. The support body 21 has a box shape that is long in the width direction with an open bottom surface, and has both guide walls 12a and 12b.
It has dimensions that can cover them over the entire length of the area. Further, support holes 23a and 23a for pivotally supporting the camshaft 31 are provided in both side walls 22a and 22b of the support body 21, respectively.
23b are formed respectively. In this case, one of the support holes 23a has a tooth-shaped inner peripheral surface (not shown) like an internal gear. A plurality of (two) cams 32a, 32b having the same shape as each other are provided on the outer circumferential surface of the camshaft 31, with an axial spacing maintained and oriented in the same direction.
Further, a stopper 33 for preventing the camshaft 31 from coming off is provided at one end of the camshaft 31. The handle 41 has a disk shape with a boss 42 at the center of its inner surface, and is adapted to be connectable to the end of the camshaft 31 . The boss 42 of the handle 41 has a pinion shape (not shown) that freely engages with the tooth profile of the support hole 23a in the one side wall 22a of the support body 21. The above-mentioned components are assembled as described below. Initially, when assembling the camshaft 31 to the support body 21, the camshaft 31 is attached to both side walls 22a of the support body 21,
22b. In this case, for example, one end side of the camshaft 31 is inserted into the support body 21 through the support hole 23b of the side wall 22b, and after each cam 32a, 32b is attached to the outer peripheral surface of the camshaft 31, the camshaft 31
The one end side thereof is passed through the support hole 23a of the side wall 22a. In this case, each cam 32a, 32b attached to the outer peripheral surface of the camshaft 31 maintains a position and interval corresponding to each protrusion 14a, 14b provided on the upper surface of the front end portion of the board 11. Thus, the camshaft 31 is attached to both side walls 2 of the support body 21.
Both ends of the camshaft 31 are rotatably supported by 2a and 22b, and both ends of the camshaft 31 protrude from both side walls 22a and 22b of the support body 21 through both support holes 23a and 23b. Next, a stopper 33 is attached to one end of the camshaft 31.
is attached to the other end of the camshaft 31, and a handle 41 is attached to the other end of the camshaft 31. Thereafter, the support body 21 equipped with the camshaft 31 and the handle 41 is mounted on both guide walls 12a and 12b.
, and both ends of the camshaft 31 fit into the guide grooves 13a, 13b of the guide walls 12a, 12b.
It covers the upper surface of the front end portion of the substrate 11 so as to be vertically movable so as to be fitted into the inside. Thus, each cam 32a, 32b on the support body 21 side
are each protrusion 14a on the upper surface of the front end of the board 11,
14b. In the case of the keyboard operation mounting board according to the present invention,
As described above, after placing the keyboard K on the board 11 and making the front edge of the keyboard K and the support body 21 close to and parallel to each other, the handle 41 is turned to adjust the height of the support body 21. The camshaft 31 is rotated in the forward or reverse direction. In such a case, each cam 32a, 32b of the camshaft 31 provided on the support body 21 side is displaced in the rotational direction of the camshaft 31 while in contact with each protrusion 14a, 14b (upper surface of the front end of the substrate 11). Then, the support body 21 is raised and lowered using the guide grooves 13a and 13b into which both ends of the camshaft 31 are fitted as guides. Therefore, the height of the support body 21 can be appropriately adjusted by simply rotating the handle 41 in the forward and reverse directions, and the operator can adjust the height of the support body 21 after such adjustment.
You can place your hand on top of it and hit the keys on the keyboard K with your fingertips. After adjusting the height of the support body 21, the camshaft 31 is moved in the axial direction, and the tooth profile boss 42 on the handle 41 side is fitted into the tooth profile support hole 23a of the support body 21, so that these tooth profiles are engaged with each other. When aligned, accidental rotation of the camshaft 31 is prevented and the height of the support body 21 is maintained as adjusted. In such a means, each of the support hole 23a and the boss 42 has a small tooth depth, and these support holes 23a,
When there is an extra gap between the bosses 42, the bosses 42
It is also possible to rotate the camshaft 31 by disengaging the boss 42 and the support hole 23a while the camshaft 31 is still fitted into the support hole 23a.

[Effect of the idea]

The keyboard operation mounting board according to the present invention has the following effects. Since the height of the support can be adjusted by a single operation of rotating the camshaft with the handle, the height of the support can be adjusted easily. A plurality of cams of the same shape are installed on the outer circumferential surface of the camshaft in the same direction while maintaining axial spacing, so when the height of the support is adjusted by rotating the camshaft, the support The body does not tilt and the level of the support is maintained. The guide walls, cam shafts, cams, and other parts and components for moving the support up and down are built into the box-shaped support, so these important components are highly protected, and the appearance is also good. good. The only dynamic components needed to move the support up and down are the camshaft, cam, and handle, and these components are not unique, which simplifies the configuration and reduces product costs. .

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of a keyboard operation mounting board according to the present invention, and FIG. 2 is a longitudinal sectional perspective view of a main part of the keyboard operation mounting board in the above embodiment. 11... Board, 12a, 12b... Guide wall,
13a, 13b...Guide groove, 21...Support body,
22a, 22b... side wall of support body, 31... cam shaft, 32a, 32b... cam, 41... handle.

Claims (1)

[Claims for Utility Model Registration] A substrate for mounting a keyboard, a support for supporting an operator's hand, a camshaft for moving the support up and down, and a handle for rotating the camshaft. The substrate is provided with a pair of guide walls rising from both sides of the front end thereof, and each guide wall is formed with a guide groove extending in the vertical direction and having an open upper end. The support body has a box shape with an open bottom surface and is long in the width direction, and has dimensions that allow it to cover both the guide walls, and the outer peripheral surface of the camshaft. a plurality of cams having the same shape are provided in the same direction with axial spacing maintained; the handle corresponds to an end of the camshaft so as to be freely connectable; A camshaft is housed within the support and is rotatably supported at both ends by both side walls of the support, and the handle is attached to the end of the camshaft that protrudes outside the support through the side walls of the support. The support body equipped with these camshafts and handles is
The camshaft is vertically movable over the top surface of the front end of the board so as to cover both guide walls, and both ends of the cam shaft are fitted into the guide grooves of the guide walls, and each cam is attached to the front end of the board. A keyboard operation mounting board characterized by being in contact with the top surface.