JP3480787B2 - Angle adjustment mechanism - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an angle adjusting mechanism suitable for application to, for example, a telephone set mounted on a desk. 2. Description of the Related Art To improve the operability of an operation unit of a telephone set used on a desk and to improve the visibility of an LCD (liquid crystal display) display unit, the operation surface and the desk surface of the telephone are used. A mechanism that can adjust the angle between the angle and the angle has conventionally been proposed. FIG. 6 shows an example of a conventional telephone angle adjusting mechanism. That is, FIG. 6 shows a perspective view of a portion of the telephone case viewed from the bottom side thereof.
Is a base side portion (hereinafter referred to as a base) of a telephone case, and 1a is a bottom surface thereof. The angle adjusting mechanism is composed of two plate-like mechanical parts 2
And 3. That is, the mechanical component 2 and the mechanical component 3 are respectively located at the edges of the plate-shaped portion.
The connecting portions 4a and 4b are rotatably connected to each other in a direction indicated by an arrow AR1 in the drawing so that an angle between them is variable. The direction connecting the connecting portions 4a and 4b is the direction of the rotation axis between the mechanical components 2 and 3. [0005] One mechanical component 2 is a mechanical component 3
At the end opposite to the connecting portion, the connecting portion 5 is rotatably connected to the connecting portion 5 provided on the bottom surface 1a of the base 1 as shown by an arrow AR2 in the figure. The other mechanical component 3 has engagement projections 6a and 6b on the end edge opposite to the connecting portion with the mechanical component 2. The engagement protrusion 6 is provided on the bottom surface 1a of the base 1.
a, 6b are provided and provided with engagement recesses 7a, 7b configured to be locked. When the telephone is used by increasing the angle between the operating surface of the telephone and the desk, the engaging projections 6a and 6b are inserted into the engaging recesses 7a and 7b to lock the telephone. Let it. As a result, the angle between the operation surface of the telephone, the display surface of the LCD, and the desk surface increases, and improvement in operability and visibility of the display unit can be expected. However, in the case of the angle adjusting mechanism shown in FIG.
Since two mechanical parts 2 and 3 having different shapes are required, two molded parts are required, which causes a problem that the manufacturing cost is increased and the number of assembling steps is required. On the other hand, as a mechanism for changing the angle of an operation surface of an input operation device such as a keyboard for a personal computer, there is a mechanism using only one mechanical part (for example, Japanese Utility Model Laid-Open No. 5-23573). It is conceivable to use this as the above-mentioned angle adjusting mechanism of the telephone. FIG. 7 shows an example of the angle adjusting mechanism for the keyboard. This angle adjusting mechanism is composed of a single rectangular plate-shaped mechanical component 11, which has concave holes 12a and 12b serving as rotation bearings at both ends on one edge side thereof, and a concave groove 13 for rotation locking. . Then, the bottom surface 1 of the keyboard case 14
On the 4a side, a rectangular recess 15 for accommodating the mechanical component 11 is provided.
And projections 16a and 16b which are engaged with the concave holes 12a and 12b of the mechanical component 11 and serve as a rotating shaft are provided on the side wall of the rectangular concave portion 15. Further, an elastic ridge 17 that fits into the concave groove 13 of the mechanical component 11 is provided at the bottom of the rectangular recess 15. In the case of the angle adjusting mechanism shown in FIG. 7, the mechanical component 11 has the concave holes 12a and 12b fitted with the projections 16a and 16b provided in the rectangular concave portion 15, and And can be freely rotated. When the angle adjusting mechanism is not used, all the mechanical components 11 are stored in the rectangular recess 15 so as not to protrude from the bottom surface 14a of the keyboard case. In order to further increase the inclination of the keyboard operation surface with respect to the desk surface, the mechanical component 11 is rotated to be taken out of the rectangular recess 15 and the concave groove 13 engages with the elastic ridge 17. To lock. Thus, the mechanical component 11 functions as a leg for holding the keyboard case 14 at an angle, and the angle between the desk surface and the keyboard operation surface can be further increased. In the case of the conventional angle adjusting mechanism shown in FIG. 7, only one mechanical component is required, and the configuration is very simple. However, in the conventional example shown in FIG. 7, when the mechanical component 11 is rotated and taken out of the rectangular recess 15 and is used as a leg for holding the keyboard case at an angle, the gap between the mechanical component 11 and the case 14 is reduced. Fixing is groove 1
This is insufficient because only the engagement of the elastic ridges 17 with the elastic projections 3 is performed. Therefore, irrespective of the user's intention, when a force is applied to the mechanical component 11 to rotate it toward the rectangular recess 15 by a button operation of the user or the like, the mechanical component 11 is moved to the rectangular recess 15. There was a problem of returning to the stored state. In view of the above, the present invention provides an angle adjusting mechanism that requires only one mechanical part and that is sufficiently fixed between the case and the mechanical part when used as an angle adjusting leg. The purpose is to provide. In order to solve the above-mentioned problems, an angle adjusting mechanism according to the present invention comprises a case, and a single plate-like piece housed in a concave portion provided on a bottom surface of the case. And the plate-like piece with respect to the bottom surface of the case,
A direction perpendicular to the thickness direction of the plate-shaped piece is a rotation axis direction, an angle adjustment mechanism that is rotatably attached so as to change an angle formed with the bottom surface of the case, wherein the plate-shaped piece has A pair of fitting protrusions (or fitting holes) for rotatably attaching the plate-like piece to the case is provided on a pair of end surfaces parallel to each other and orthogonal to the bottom surface of the case, Further, a projection integral with the plate-like piece bulging toward a straight line connecting the pair of fitting projections (or fitting holes) at a position between the pair of fitting projections (or fitting holes). A resilient engaging projection is provided between the projecting portion and the pair of fitting projecting portions (or fitting holes), the elastic engaging projection projecting toward the linear side. A pair parallel to each other in a direction perpendicular to the bottom surface of the case In the wall, a pair of fitting holes that rotatably fitted to the pair of fitting protrusions of the plate-shaped piece (or the fitting hole) (or fitting projections) are provided,
An insertion recess for inserting the protruding portion of the plate-like piece so as to hold the plate-like piece non-rotatably and an engagement insertion hole with which the elastic engagement protrusion of the plate-like piece engages. The pair of fitting holes of the case (or the pair of fitting holes of the plate-shaped piece) are provided at a predetermined angle where the angle between the plate-shaped piece and the case bottom surface is not zero. The pair of fitting projections of the plate-like piece (or the pair of fitting projections of the case) are formed by the elongated holes extending in the extension direction of the predetermined angle, and the inside of the elongated holes is the predetermined angle. And the plate-shaped piece is rotated so as to be at the predetermined angle with respect to the bottom surface of the case, and then slid toward the inside of the case. When moved, the protruding portion integrated with the plate-like piece is inserted into the insertion concave portion. With the, by the elastic engagement projection is elastically engaged with the engagement insertion hole, wherein said plate-shaped pieces are held non-rotatably on the case. In the angle adjusting mechanism according to the present invention having the above-described structure, the number of mechanical parts other than the case may be only one of the plate-like pieces. And when this plate-like piece works as a leg,
After rotating the plate-like piece to a predetermined angle, the plate-like piece is pushed straight into the case. Then, a part of the plate-like piece is inserted into the insertion recess on the bottom surface of the case, so that the plate-like piece is prevented from rotating, and the plate-like piece and the case are sufficiently fixed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings, taking an example of an angle adjusting mechanism of a telephone. FIG. 1 shows an angle adjusting mechanism for a telephone according to this embodiment, and is an exploded perspective view of a portion of the telephone case viewed from the bottom side. In FIG. 1, reference numeral 21 denotes a base side portion (hereinafter, referred to as a base) of a telephone case, and reference numeral 21a denotes a bottom surface thereof. Also,
31 is a plate-like piece as a mechanism component for angle adjustment.
In the case of this embodiment, the base 21 and the plate-like piece 31
Are made of synthetic resins each having elasticity. A plate-like piece 31 is provided on the bottom surface 21a of the base 21.
A recess 22 corresponding to the shape of the plate-like piece 31 is provided. As will be described later, when the angle between the plate-like piece 31 and the bottom surface 21a is zero, the plate-like piece 31, as shown in FIG.
2, so that it does not protrude from the bottom surface 21a. The plate-like piece 31 has a rectangular shape, and is provided at both ends in the longitudinal direction with a plate surface integral with the plate-like piece 31 and orthogonal to the plate surface of the plate-like piece 31. 32a, 3
The plate-like engagement arms 32 and 33 having 3a are respectively
The plate-like piece 31 is provided so as to protrude toward one long side 31a. The plate-like engagement arms 32, 33
Plate surfaces 32a, 33a orthogonal to the plate surface of the plate-shaped piece 31
Are provided with projections 34 and 35 having a columnar cross-section, which serve as a rotation axis of the plate-shaped piece 31. In the concave portion 22, fitting holes 23 and 24 are provided corresponding to the protrusions 34 and 35, respectively. The plate-like piece 31 has a protrusion 34,
35 is connected to the base 21 by being inserted into these fitting holes 23 and 24. In the connected state, the plate-shaped piece 31 is rotatable so as to change the angle between the plate-shaped piece 31 and the base bottom surface 21a with the direction indicated by the one-dot chain line 30 in FIG. As shown in FIGS. 2 and 3, the fitting holes 23 and 24 are elongated holes having a predetermined angle θ with respect to the base bottom surface 21a and extending in a direction toward the inside of the base 21. . In this example, the angle θ is, for example, about 100
Degree. In this case, as shown in FIG.
The projection 34 and the projection 35 are configured so as to be located on the side of the bottom surface 21a of the long hole forming the fitting holes 23 and 24 when the is set in the recess 22. . The middle part of the long side 31a of the plate-like piece 31 is a rectangular protrusion 36 that protrudes in a rectangular shape in the same direction as the plate-like engagement arms 32 and 33. The rotation guide wall 25 is formed in the recess 22 so as to abut the rectangular projection 36 when the plate-shaped piece 31 and the base 21 are connected. This rotation guide wall 2
In FIG. 5, as shown in FIG. 4, a portion which abuts on the rectangular projecting portion 36 is an arc-shaped curved surface. As shown in FIG. 4, the plate-shaped piece 31 is guided by an abutting state of the rectangular protrusion 36 and the rotation guide wall 25, and rotates with respect to the base 21.
During this rotation, as shown in FIG. 3A, the positions of the protruding portions 34 and 35 substantially maintain the state of being positioned on the bottom surface 21a side of the long fitting holes 23 and 24. When the plate-like piece 31 is rotated by an angle θ with respect to the base bottom surface 21a as shown in FIG. 3B, the protrusions 34 and 35 are guided by the elongated fitting holes 23 and 24. , In a state in which it can move inward of the base 21.
That is, the plate-shaped piece 31 can be slid toward the inside of the base along the long holes of the fitting holes 23 and 24. When the plate-shaped piece 31 is at a position rotated by an angle θ with respect to the base bottom surface 21a, the portion of the base 21 where the rectangular protrusion 36 of the plate-shaped piece 31 faces faces the rectangular protrusion 36. The opening insertion concave part 26 of the size and shape which can just accommodate it is provided. Therefore, the plate-like piece 31 is connected to the base bottom 21.
When the plate-shaped piece 31 is pushed toward the base 21 after being rotated by an angle θ with respect to the
As shown in FIG. 4, the rectangular projecting portion 36 is inserted into the opening insertion concave portion 26 while sliding linearly along the line 24. As described above, when the rectangular projection 36 is inserted into the opening insertion recess 26, the opening insertion recess 26
Is in a state of holding the rectangular protruding portion 36 and, consequently, the plate-shaped piece 31 in that state. Therefore, even if a force in the direction indicated by the arrow AR3 in FIG. Piece 3
The state of the first piece 21 with respect to the base 21 does not change, and the plate-shaped piece 31 is fixed to the base. For example, the size of the opening insertion concave portion 26 and the size of the rectangular projecting portion 36 are substantially matched, and the rectangular projecting portion 36 is elastically press-fitted into the opening inserting concave portion 26. The plate-like piece 31 can be fixed to the base 21. However, in the present embodiment, the size of the opening insertion recess 26 and the size of the rectangular projection 36 are determined in consideration of the ease of forming the opening insertion recess 26 and the rectangular projection 36.
Is formed slightly larger than the size of the
Can relatively easily slide within the opening insertion concave portion 26. In this embodiment, the plate-like piece 3
The following locking means is used in order to lock 1 securely to the base 21. That is, the long side 31a of the plate-like piece 31
On both sides of the rectangular projecting portion 36, elastic engaging projections 37 and 38 constituting locking means are provided. The elastic engagement projections 37 and 38 are plate-shaped, and can be elastically biased in a direction orthogonal to the plate surface direction. Further, bulging portions 37a, 38a bulging in a direction orthogonal to the direction in which the protrusions 37, 38 protrude are formed at the tips of the elastic engagement protrusions 37, 38. On the other hand, on both sides of the opening insertion concave portion 26 of the base surface 21a of the base 21, engagement insertion holes 27 and 28 for inserting the elastic engagement projections 37 and 38 of the plate-like piece 31 are formed. As shown in FIG. 5, projections 27a and 28a protruding in the plate surface direction of the elastic engagement projections 37 and 38 are provided at the bottoms of the engagement insertion holes 27 and 28. When the elastic engagement projections 37, 38 are inserted into the engagement insertion holes 27, 28 and pushed in, the bulging portions 37a, 38a of the elastic engagement projections 37, 38 are pushed into the engagement insertion holes 27, 28. , 28, the bulging portions 37a, 38a engage with the projections 27a, 28a to lock the plate-like piece 31 to the base 21. Projection 27a,
Since 28a has a curved surface, the plate-like piece 31 is strongly
When pulled, the bulging portions 37a, 38a and the protrusions 27a, 28
a is released, and the locking between the plate-shaped piece 31 and the base 21 is released. The two short sides of the plate-shaped piece 31 are engaged with the plate-shaped piece 31 on the side opposite to the plate-shaped engagement arm while the plate-shaped piece 31 is housed in the recess 22 of the base 21. Bulging portions 39a and 39b (the bulging portion 39b is not shown) are provided. Then, the bulging portions 39a, 3
9b, the bulge 39
a, 39b are formed with concave grooves 29a, 29b. Therefore, as shown in FIG.
1 is housed in the recess 22, the bulge 39
The tabs 31a and 39b fit into the grooves 29a and 29b, and the plate-like piece 31 is locked in the recess 22. In order to increase the angle between the telephone and the desk surface by using the angle adjusting mechanism configured as described above, the angle of the plate-like piece 31 from the state in which the plate-shaped piece 31 is stored in the recess 22 is changed. After rotating by θ, linearly slide and move in the inner direction of the base 21 to insert the rectangular projecting portion 36, which is a part of the plate-like piece 31, into the opening insertion concave portion 26 of the base 21,
Also, the elastic engagement projections 37, 38 are inserted into the engagement insertion holes 27, 28.
Bulges 37a, 38a and protrusions 27a, 2
The plate-shaped piece 31 is used by being fixed to the base 21 by engaging with 8a. As described above, in this state, the rectangular projection 36 of the plate-like piece 31 is inserted into the opening insertion recess 26, so that even if a force is applied to the plate-like piece 31 in the rotation direction. The plate-shaped piece 31 is stably fixed to the base 21 and its angle adjustment state is maintained. When the telephone is used at the same angle as the base shape, the plate-shaped piece 31 is rotated so as to be accommodated in the concave portion 22, and the bulging portions 39a and 39b are formed into the concave grooves 29a and 29b.
The plate-like piece 31 is fitted in the recess 22 so as to be fitted in the recess 29b. In this storage state, the plate-shaped piece 31 is completely stored in the recess 22. For this reason, even when the telephone is used with the angle-adjusting plate-shaped piece 31 stored therein, there is no uncomfortable feeling. In the above example, the connecting portion between the plate-like piece 31 and the base 21 has a projection provided on the plate-like piece 31 side.
Although the fitting hole is provided on the base 21 side, the fitting hole may be provided on the plate-shaped piece 31 side and the protrusion may be provided on the base 21 side. Although the above example is an example of the angle adjusting mechanism of the telephone, the object of the angle adjustment is not limited to this, and it goes without saying that the present invention can be applied to an operation input device such as a keyboard. As described above, according to the present invention, since the mechanical component for adjusting the angle may be one of the plate-like pieces, the number of components and the assembly cost can be reduced. After rotating the plate-like piece with respect to the case, it is linearly slid and moved in the interior direction of the case, so that a part of the plate-like piece is fixed by being inserted into the insertion recess of the case.
The fixed state can be stably maintained even when a force in the rotation direction is applied.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an embodiment of an angle adjusting mechanism according to the present invention. FIG. 2 is a diagram showing a state in which a plate-like piece for angle adjustment is housed in a case in one embodiment of the present invention. FIG. 3 is a view for explaining the movement of a plate-like piece for angle adjustment in one embodiment of the present invention. FIG. 4 is a view for explaining movement of a plate-like piece for angle adjustment in one embodiment of the present invention. FIG. 5 is a diagram for explaining a locked state between a plate-like piece for angle adjustment and a case in the embodiment of the present invention. FIG. 6 is a diagram illustrating an example of a conventional angle adjustment mechanism. FIG. 7 is a view showing another example of the conventional angle adjusting mechanism. DESCRIPTION OF SYMBOLS 21 Base 22 Recesses 23, 24 Fitting holes 25 Rotation guide wall 26 Opening insertion recesses 27, 28 Insertion holes 31 Plate-shaped pieces 32, 33 Plate-shaped engagement arms 34, 35 Projection 36 Rectangular projection 37, 38 Elastic engagement projection

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Teisuke Michimoto Nippon Telegraph and Telephone Corporation 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo (56) References Japanese Utility Model 5-23573 (JP, U) Japanese Utility Model Application No. Sho 61-93058 (JP, U) Japanese Utility Model Application No. Sho 62-152541 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04M 1/02-1/23 H05K 5/00 -5/06

Claims (1)

(57) Claims 1. A case, comprising a case and one plate-like piece housed in a concave portion provided on a bottom surface of the case, wherein the plate-like member is disposed on the bottom surface of the case. An angle adjusting mechanism, wherein the piece is rotatably attached so as to change an angle formed with a bottom surface of the case with a direction orthogonal to a thickness direction of the plate-shaped piece as a rotation axis direction, A pair of fitting protrusions (or fitting holes) for rotatably attaching the plate-like piece to the case are provided on a pair of end surfaces parallel to each other and orthogonal to the bottom surface of the case. The plate-shaped piece provided at a position between the pair of fitting protrusions (or fitting holes) and bulging toward a straight line connecting the pair of fitting protrusions (or fitting holes) to each other; An integral projection is provided, and the projection and the pair of fitting projections are further provided. Or a fitting hole), an elastic engagement projection is provided that protrudes toward the straight line side, and the case has a pair of walls parallel to each other in a direction perpendicular to a bottom surface of the case in the recess. A pair of fitting holes (or fitting protrusions) rotatably fitted to the pair of fitting protrusions (or fitting holes) of the plate-like piece are provided, and the protrusions of the plate-like piece are provided. Are inserted to hold the plate-shaped piece so that the plate-shaped piece cannot be rotated, and an engagement insertion hole with which the elastic engagement protrusion of the plate-shaped piece is engaged is provided. The fitting hole (or the pair of fitting holes of the plate-like piece) is long in the extension direction of the predetermined angle when the angle between the plate-like piece and the bottom surface of the case is at a predetermined angle other than zero. The pair of fitting projections (there are Or the pair of fitting projections of the case) is configured to be slidable in the direction of the predetermined angle in the elongated hole, and the plate-like piece is attached to the bottom surface of the case. After being rotated to the predetermined angle with respect to the case, when the sliding movement is performed in the interior direction of the case, the protrusion integrated with the plate-like piece is inserted into the insertion recess, The angle adjustment mechanism, wherein the plate-shaped piece is held by the case in a non-rotatable manner by the elastic engagement protrusion being elastically engaged with the engagement insertion hole.