JPH01283997A - Device for rotation of panel - Google Patents

Abstract

PURPOSE:To hold a completely locking state even if a strong pressing force is operated on a rotary panel by providing a connection piece in contact with one centripetal side of a first rotary member of the sawtoothlike cutout of the member. CONSTITUTION:Before a panel rotating device is rotated, a connection piece 16 is brought into contact with one centripetal side of a sawtoothlike cutout near a rotary panel 11. When the panel 11 is raised in a direction of an arrow C in this state, the piece 16 is pressed at the oblique side of the cutout 17a of a first rotary member 17, rotated at a shaft 16b as a center, moved in an opposite direction to an arrow B, when the cutout near second one is moved to the panel 11, it is again moved in a direction of the arrow B, and brought into contact with one centripetal side of the cutout 17a. Thus, even if a strong force of opposite direction to the arrow C is applied to the panel 11, it can be completely locked without moving the panel in the direction of the force.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a panel rotation device for a tape recorder or the like.

BACKGROUND OF THE INVENTION In recent years, magnetic recording and reproducing devices such as tape recorders have become multi-functional, and many of their front panels are upright.
It has become common to see devices equipped with a rotating mechanism that rotates a portion of the client panel to provide an appropriate inclination.

An example of the conventional panel rotating device described above will be described below with reference to the drawings.

FIG. 7 is an exploded view of essential parts of a conventional panel rotation device. In FIG. 7, 1 is a rotating panel, 2 is an operation button, 3 is a rotating plate, 4 is a guide plate, 6 is a fixed plate, 6 is a steel ball, and 7 is a leaf spring. 8 and 9 are screws, and 10 is a chassis.

The rotating plate 3 is fixed to the rotating panel 1 with screws or the like. Further, the rotating plate 3 is held between a guide plate 4 and a fixed plate 6 via four screws 8. The two steel balls 6 are pressed down by a leaf spring 7 and fixed by two screws 9 at positions where the holes in the rotating plate 3 and the holes in the fixed plate 6 match. The panel rotation mechanism assembled in the above state is fixed to the chassis 10 with screws or the like from the bottom.

The operation of the panel rotation mechanism configured as described above will be explained below.

First, when the lower edge of the rotating panel 1 is lifted in the direction of arrow A from the state shown in FIG. The steel balls 6 inserted into the fixing holes 3a and 3b in a pressed state escape from the fixing holes 3a and 3b as the rotating plate 3 moves in the direction of arrow A, and as the rotation progresses further, the steel balls 6 are inserted into the fixing holes 3C. It comes to the position where it is inserted into 3d. At this time, since the steel ball 6 presses the rotating plate 3 with the leaf spring 7, the rotating panel 1 is not in a fixed state, and its rotating angle is different from that of the fixing holes 3a, 3c, and 3b. It is rotated by a center angle pitch of 3d. When the rotating panel 1 is further lifted in the direction A, the steel balls 6 are successively inserted into other fixing holes, and the rotation angle of the rotating panel 1 increases.

Problems to be Solved by the Invention However, in the above configuration, the rotating panel 1 is fixed during rotation because it is supported by the elastic pressure of the steel balls 6 and the leaf springs 7 that press the rotating plate 3. Another problem is that when the operation button 2 is pushed in forcefully, the rotating panel 1 is pushed back to the previous position without being able to withstand the pushing pressure.

In view of the above problems, the present invention provides a panel rotation device that can reliably maintain the rotation angle of a rotation panel even when an operation button is pressed with great force.

Means for Solving the Problems In order to solve the above-mentioned problems, the panel rotation device of the present invention has an external shape formed by two circular arcs with different radii whose centers are the same as the center of rotation of the panel member to be rotated. and has a plurality of serrated notches with one side facing the rotation center on one of the two arcs, and is fixed to the panel member to be rotated. a first rotary member which has been rotated, and a sawtooth notch portion of the first rotary member, which forms part of the outer shape with two circular arcs having approximately the same radius as this 10th rotary member; At a position corresponding to , there is a notch that is the same as the serrated notch described above, and a notch that is also cut out to a symmetrical position with one side facing the rotation center of the serrated notch as the axis of symmetry. By abutting the second rotating member having a tooth-shaped notch with one side of the saw-toothed notch of the first rotating member toward the center of rotation, the first rotating member can be rotated in one direction. When the second rotating member rotates, its tip is pushed back by the tooth-shaped notch of the second rotating member, thereby locking the second rotating member. It is configured to include a locking piece whose state is released, and a push button mechanism that transmits rotational motion by pressing the second rotational member.

According to the above-described configuration, the present invention has the structure that even if the operating button of the rotating panel is pushed in with great force, one side of the sawtooth-shaped notch of the first rotating member toward the center of rotation is not engaged. Since the retaining pieces are in contact with each other, a completely locked state is achieved, and the rotation angle of the next moving panel is reliably maintained.

EXAMPLE Hereinafter, a panel rotation device according to an example of the present invention will be described with reference to the drawings.

FIG. 2 is a perspective view showing the front part of a tape recorder equipped with a panel rotating device according to an embodiment of the present invention.
The figure is a perspective view of the tape recorder when the panel rotation device is in operation. In Fig. 3, 11 is a rotating panel;
12 is an operation button.

FIG. 1 is an exploded view of the main parts of a panel rotation device in one embodiment of the present invention. In Fig. 1, 12 is a handle, and 13 is a lever. 14 is a push button, lever 1
3, the bearing of the handle 12 is inserted into the part 12a, and
The push button 14 is inserted into the fitting hole 12b of the handle 12 and fixed to the rotating panel 11 with screws or the like. 16 is a guide plate, and 16 is a locking piece. The locking piece 16 is inserted into the pin 15a of the guide plate 16. At this time, the locking piece 16 exerts an elastic biasing force due to the effect of the elastic piece 16a provided on the locking piece 16. Reference numeral 17 denotes a first rotating member, which is fixed to the rotating panel 11 with a screw or the like.

A sawtooth notch 17a is provided on the outer periphery of the first rotating member 17.
There are multiple locations. A guide rail 18 is fixed to the first rotating member 17 with screws 21. Reference numeral 19 denotes a second rotating member, and its outer periphery has a toothed notch 19a.
A plurality of guide rails 18 are arranged in the arcuate hole 19b provided inside the guide rail 18. The first and second rotating members 17.19 are the guide grooves 1 of the guide plate 16.
5a, the guide rail 18 is inserted into the guide groove 15b and slides thereon. After these parts are inserted into the guide plate 16, they are fixed on the fixing plate 2o via four screws 22. The panel rotation device assembled as described above is fixed to the chassis 23 with screws or the like.

FIG. 4A is a sectional view showing the state before the panel rotation device of this embodiment is rotated, FIG. 4B is an enlarged view of the same essential part, and FIG. 6 is from the 3o degree rotation state. FIG. 6 is a cross-sectional view showing the transition to the state shown in FIG. 4, and FIG. 6 is an enlarged view of the main part showing the state in which the locking piece 16 is released.

The operation of the panel rotating device configured as described above will be explained below with reference to FIGS. 4, 5, and 6.

First of all, FIG. 4 shows the state before the panel rotation device is rotated. Arc-shaped hole 1 of member 1e
The guide rail 9b and the guide rail 18 are brought into contact with each other and fixed at a fixed position.

In this position, the serrated notch 17 of the first rotating member 17
a and the tooth-shaped notch 19 of the second rotating member 19
The dimensions of the apexes a are set in advance so that they are at the same position, and the locking piece 16 is placed on the side facing the rotation center of the sawtooth notch closest to the rotating panel 11 at this position. are in contact with each other. At this time, the elastic piece 16 provided on a part of the locking piece 16
At point a, the locking piece 16 is biased in the direction of arrow B.

In this state, when the rotating panel 11 is lifted in the direction of arrow C, the locking piece 16 is pushed down by the oblique side of the serrated notch 17a of the first rotating part 7, and the shaft 16b is pushed down. It rotates around the center, moves in the direction opposite to arrow B and y, and when it reaches the notch closest to the rotating panel 11, moves again in the direction of arrow B, heading toward the center of the sawtooth notch 17a. Even if a strong force is applied to the rotating panel 11 in the direction opposite to arrow C and y by contacting one side, the rotating panel 11 will not move in the direction of the force and will be completely locked.

5 and 6 are cross-sectional views showing the rotating panel 11 in the process of returning from the 30 degree tilted position to the upright position as shown in FIG. 4A, when the push button 12 is pushed in the direction of the arrow. The force is transmitted to the lever 13, and the lever 13 further transmits the force to the second rotating member 19. As a result, the second rotating member 19 moves in the direction of the arrow E, but as the second rotating member 19 moves, the toothed notch 19a moves the locking piece 16 toward the arrow F.
By pushing it back in the direction shown in FIG. 4, the still contact state shown in FIG. 4 is released.

As described above, according to this embodiment, one side facing the center of the sawtooth notch provided in the first rotating member 17 comes into contact with the locking piece, and a strong force pushing down the rotating panel is generated. By providing a 20th rotating member having a notch shaped like a protrusion for completely holding the locking piece and pushing the locking piece back, and a push button mechanism for rotating this member, The locked state of the locking piece can be easily released by simply pressing the push button.

Effects of the Invention As described above, the present invention provides a first rotating member having a serrated notch, a second rotating member having a protruding notch, and a first rotating member. By providing a locking piece that comes into contact with one side facing the center of the serrated notch and a push button mechanism that returns the locking piece in the release direction, a strong pushing force is exerted on the rotating panel. It is possible to withstand this and maintain a complete locked state, and it is also possible to provide the effect that this locked state can be released by simply pressing the push button.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a panel rotation device according to an embodiment of the present invention, FIGS. 2 and 3 are perspective views of a tape recorder equipped with the panel rotation device of this embodiment, and FIGS. 6th
The figure is a side sectional view of the same panel rotation device, FIG. 4B is an enlarged view of the same main part, and FIG.
... Locking piece, 17 ... First rotating member, 17
a... Serrated notch, 19... Second rotation member, 19a... Serrated notch. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3, Figure 4, Figure 5, Figure 19. -11 Mountain Teeth Law Paddy Burning Shu Figure 6 Figure 7

Claims (1)

[Claims] A part of the outer shape is formed by two circular arcs with different radii whose center is the same as the center of rotation of the panel member to be rotated,
and a first rotation member having a plurality of sawtooth-shaped notches on one of the two arcs, one side of which faces toward the rotation center, and fixed to the panel member to be rotated. A part of the outer shape is formed by the member and two circular arcs having substantially the same radius as the first rotating member, and the sawtooth is formed at a position corresponding to the sawtooth notch of the first rotating member. A second notch having a notch that is the same as the notch in the shape of the sawtooth, and also has a notch in a symmetrical position with the axis of symmetry being one side toward the center of rotation of the sawtooth notch. The rotating member contacts one side of the sawtooth notch of the first rotating member toward the center of rotation, thereby preventing the rotating member from rotating in one direction; When the second rotating member rotates, a locking piece whose distal end is pushed back by the tooth-shaped notch of the second rotating member to release the locked state; A panel rotation device characterized in that a push button mechanism is disposed on the rotation member to transmit rotation motion by pressing the button.