JPH0413708Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Technical Field of the Invention The present invention relates to a support leg structure in which the inclination angle is set in a stepped manner.

(b) Background of the Technology For example, a keyboard configured separately so as to be connected to the main body of a word processor by a cable has a large effect on operator errors and fatigue. Therefore, the keyboard operation surface is inclined at an appropriate angle, but it is desirable that the angle of inclination can be easily adjusted depending on individual differences among operators.

(c) Prior Art and Problems Figure 1 is a side view of a keyboard, in which (a) shows a state in which the inclination angle is not adjusted, and (b) shows a state in which the inclination angle is increased.

In FIG. 1, a keyboard 1 has a plurality of key tops 2 arranged in a matrix, a pair of fixed support feet 3 are attached to the front of the bottom surface, and a pair of adjustable support feet 4 are attached to the rear of the bottom surface. ing. Therefore,
When the operating surface inclination angle when the inclination angle is not adjusted and the amount of protrusion of the adjusting foot 4 is minimized is α ₁ , the operating surface inclination angle α ₂ when the adjusting foot 4 is projected is larger than α ₁ .

However, the conventional adjustment feet 4 are of a screw type or a folding type. There was a drawback that it could not be set between α ₁ and α ₂ .

(d) Purpose of the invention The purpose of the invention is to eliminate the above problems and reduce operator errors.

(e) Structure of the invention The above object is to provide a support leg that can adjust the mounting angle of a keyboard in multiple stages, which is separated from the system, and which has a shaft with a circular cross section and a part of the middle part of the shaft. a plurality of radial tooth-shaped protrusions that protrude in the radial direction; a protrusion that protrudes larger than the protrusion in a different radial direction than the protrusion from another part of the intermediate portion of the shaft; and a protrusion that is concentric with the shaft and further than the protrusion; The foot member is provided with a handle portion having a concave and convex shape on an arcuate surface that protrudes from the protruding piece and does not protrude from the protruding piece, and the housing of the keyboard that accommodates the foot member has both longitudinal ends of the shaft that are movable up and down. a pair of grooves that fit into the grooves, a recess into which one of the upwardly facing projections engages, and a window through which a portion of the handle portion projects upward; This is achieved by the support leg for adjusting the inclination angle, which is characterized in that an elastic spring for biasing the tilt angle is accommodated in the housing.

(f) Embodiment of the invention An embodiment of the invention will be described below with reference to FIGS. 2 to 7.

Fig. 2 is a side view of the supporting feet according to an embodiment of the present invention attached to the rear of the keyboard, Fig. 3 is a side view with one side wall of Fig. 2 removed, and Fig. 4 is the foot of Fig. 3. FIG. 5 is a cross-sectional view of FIG. 2 with the members removed. FIG. 6 is a side view of the foot member of FIG. 3 rotated by one pitch. FIG. 7 is a side view of the foot member of FIG. 2
FIG. 3 is a side view with pitch rotation.

In FIG. 2, 11 is a housing (a part of the keyboard body) that accommodates the foot members, 12 is the foot member, and a part of the foot member 12 is attached to the housing 1.
It protrudes from the top of 1.

In FIG. 3, reference numeral 13 indicates a spring for supporting the foot member, which is made by bending a spring wire, and reference numeral 14 indicates a bottom plate protrusion into which one of the springs 13 is fitted. The foot member 12 made of plastic includes a shaft 15, three radial tooth-shaped protrusions 16 protruding in the radial direction of the shaft 15, a protrusion 17 different from the protrusions 16 and protruding in the radial direction, and anti-slip unevenness. A handle portion 18 formed on the outer peripheral surface is integrally molded, and the shaft 15 and the handle portion 18 are coaxial. Further, one end of the spring 13 is fitted onto the projection piece 14, and the other end supports the shaft 19 on which the projection 16 of the foot member 12 is formed so as to push it up from below. However, the pair of protrusion-forming shafts 19 protrude from the handle portion on both sides of the foot member 12 in the thickness direction of the paper, and the pair of shafts 15 are formed to protrude further than the shafts 19. Further, two springs 13 are arranged in parallel in the thickness direction of the paper, and each spring 13 supports an opposing shaft 19.

In FIG. 4, the housing 11, which is open at the bottom, has a window 20 from which a portion of the handle 18 protrudes, and a side wall 23 that sandwiches the foot member 12 in the thickness direction of the drawing has a window 20 that is open downward. A pair of grooves 21 into which the left and right ends of the shaft 15 are fitted so as to be movable up and down, and a window 20
A recess 22 in which one of the protrusions 16 engages is formed in the side wall of the recess 22 .

FIG. 5 illustrates the relative relationship between the shafts 15, 19 and the groove 21, and as shown in FIGS. The purpose of the partial thinning 25 is to reduce the weight of the leg member 12 and the amount of material used.

In the support leg configured in this way, the leg member 12 is constantly pushed upward by the elastic force of the spring 13,
The pushing up is stopped when one of the protrusions 16 hits the recess 22. In the foot member 12 shown in FIG. 3, the protrusion 16 closest to the protrusion 17 is fitted into the recess 22, and the protrusion 17 is substantially aligned with the lower surface of the housing 11.

Therefore, when the foot member 12 is pressed down with a pressing force that exceeds the elastic force of the spring 13, the foot member 12 is rotated clockwise by about 45 degrees, and the pressing force is removed, the spring 13 pushes the foot member 12 down as shown in FIG. The central protrusion 16 of the foot member 12 is fitted into the recess 22, and the protrusion 17 is projected from the lower surface of the housing 11 in a direction of about 40°, and this position is maintained, so that the housing 11 is transformed into the one shown in FIG. lift to a higher position.

Then, when the foot member 12 is further pressed down by the pressing force, the foot member 12 is rotated clockwise by about 45 degrees again, and the pressing force is removed, the foot member 12 is pushed up by the spring 13 as shown in FIG. 12, the protrusion 16 protruding in the opposite direction of the protruding piece 17 is fitted into the recess 22, causing the protruding piece 17 to protrude from the lower surface of the housing 11 in a substantially vertical direction, and its position is maintained, so that the housing 11 is Lift it to a higher position than that shown in Figure 6.

On the other hand, the leg member 12 whose posture is maintained as shown in FIG. 6 or FIG.
Alternatively, if the housing 11 is rotated counterclockwise by approximately 90 degrees and the pressing force is removed, the housing 11 returns to the position shown in FIG. 3 and at the same time returns to the lower position.

However, in any of the above postures of the foot member 12, one of the protrusions 16 is fitted into the recess 22 and the shaft 15 is fitted into the groove 22, so that the posture maintenance and changing operations (up and down (dynamic) becomes stable.

It should be noted that although the foot member 12 can be changed into three positions in the above embodiment, more maintenance positions can be achieved by appropriately selecting the formation pitch of the projections 16.

(g) Effects of the invention As explained above, according to the invention, it is easy to set the inclination angle of the keyboard in multiple stages by operating from the surface of the keyboard, and the inclination can be maintained stably, making it suitable for operators. By selectively setting the tilt angle, the operability of the keyboard can be improved, and erroneous operations and fatigue can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a side view of the keyboard, FIG. 2 is a side view of support legs according to an embodiment of the present invention attached to the rear of the keyboard, and FIG. 3 is a side view with one side wall of FIG. 2 cut away. Figure 4 is a side view of Figure 3 with the foot member removed, Figure 5 is a cross-sectional view of Figure 2, and Figure 6 is a cross-sectional view of Figure 2 with the foot member removed.
This figure is a side view of the foot member shown in FIG. 3 rotated by one pitch, and FIG. 7 is a side view of the foot member shown in FIG. 3 rotated two pitches. In the figure, 1 is a keyboard, 3 is a fixed support leg, 4 is an adjustable support leg, 11 is a housing, 1
2 is a foot member, 13 is a spring, 15 is a shaft, 16 is a tooth-shaped projection, 17 is a protrusion, 21 is a groove, and 22 is a recess for engaging the projection.

Claims (1)

[Claims for Utility Model Registration] A support leg for adjusting the mounting inclination angle of a keyboard configured separately from the system, comprising a shaft with a circular cross section and a plurality of support feet protruding in the radial direction from a part of the intermediate portion of the shaft. a protrusion that protrudes more than the protrusion in a different radial direction than the other part of the intermediate portion of the shaft; A foot member is provided with a handle portion having a concavity and convexity formed on an arcuate surface that does not protrude, and a housing of the keyboard that accommodates the foot member has a pair of handle portions in which both ends in the length direction of the shaft are fitted so as to be movable up and down. a groove, a recess into which one of the upwardly directed protrusions engages, and a window through which a portion of the handle portion projects upwardly; A support foot for adjusting an inclination angle, characterized by being housed in a housing.