JPH0348636Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a slide mechanism suitable for application to keyboard instruments, etc., in which the main body of the musical instrument can be moved up and down and can be packed compactly.

[Conventional technology]

Conventionally, in keyboard instruments such as vertical pianos and electronic organs, the keyboard section has been installed protruding from the front of the main body cabinet, so the dimensions in the front and back direction are large and a large space is required, so the keyboard section can be folded freely. By storing the keyboard inside the main body cabinet, or by configuring the main body cabinet and the keyboard section to be separable, packaging, transportability,
Various devices have been proposed to improve space efficiency during storage.

[The problem that the idea aims to solve]

However, keyboard instruments with a keyboard section that can be stored inside the main body cabinet have to support the keyboard section so that it can rotate freely and then rotate it downward by nearly 90 degrees to store it. In keyboard instruments, the relative positional relationship between the keys and the action mechanism tends to be distorted, and the keyboard usually blocks the front opening of the cabinet.
There were inconveniences such as the opening opening opened when it was stored, and it was necessary to cover it with a cover or the like.

On the other hand, if the main body cabinet and keyboard section are separable, they can be packed individually, and although the volume of each item is smaller, the cost of packing materials increases because there are two items, and the cost of packing materials increases. This has the disadvantage that the effort is doubled. Furthermore, if the main body cabinet and keyboard section are packaged together after being separated, the volume of the package will not be much different than if they are packaged together, so it is a good idea to take into consideration the disassembly and assembly work after unpacking. It's hard to say.

[Means to solve the problem]

The slide mechanism according to this invention was created in view of the above-mentioned points, and includes a support member having a cutout window, a cam operation window corresponding to the cutout window, and a sliding mechanism with respect to the support member. a slide member freely disposed; a flat cam rotatably provided on the support member via a shaft and located on the opposite side of the notch window with the cam operation window in between; and the slide member. and a cam operating piece located below the cam, the cam having a first protrusion spaced apart from the center of rotation of the cam, and a cam operating piece provided at a distance between the center of rotation and the first protrusion. a second convex portion provided on a straight line that intersects a straight line connecting the two and passes through the rotation center and is located at a longer distance from the rotation center than the first convex portion; and a first convex portion. a third convex portion provided at a point symmetrical position with respect to the rotation center;
a second convex portion, a fourth convex portion provided at a point symmetrical position with respect to the rotation center, a first flat portion connecting the first and fourth convex portions, and a second and third convex portion; The second or fourth protrusion normally protrudes into the cam operation window and the notch, and the first or third protrusion has locks the slide member at a predetermined height position by pressing the slide member against the support member, and when the slide member moves upward, the first or third convex portion faces the cam operation window and the slide member is locked at a predetermined height position. When the pressing lock is released and the cam operating piece is provided on the opposite side of the cam operating window across the center of rotation of the cam, and comes into contact with the cam as the slide member moves upward, the second cam operating piece or the fourth protrusion is pressed against the cam operation window to prevent the slide member from rising further, and when the slide member descends from this state, the cam is released and moved out of the cam operation window;
When the slide member rises from the lowest position, the second or fourth protrusion is pushed up to rotate the cam and the fourth or second protrusion enters the cam operation window.

[Effect]

In this invention, the second protrusion of the cam is inserted into the cam operation window and the notch window and is pressed downward by the upper edge of the cam operation window, and the first protrusion is inserted into the inner surface of the slide member. By pressing the portion above the cam operation window against the support member from the inside, the slide member is locked at that height position. When the slide member is raised to a required height from this locked state, the second protrusion comes into contact with the upper edge of the cutout window and restricts further elevation. Further, the first convex portion corresponds to the cam operation window when the slide member is raised. Therefore, the cam rotates about the rotation axis in a direction in which the first protrusion enters the cam operation window, and when the cam rotates by a predetermined angle, the upper end of the cam operation piece and the lower edge of the cam operation window The second flat portion is abutted and supported. Next, when the slide member is lowered, the cam operating piece also descends to release the cam, so the cam rotates in the same direction as above, causing the first and second protrusions to exit from the cam operating window. . Therefore, the slide member descends along the support member to the lowest position. At this time, the first and second convex portions are directed downward. On the other hand, when the slide member is raised from the lowest position, the cam will
The cam operation piece is rotated in the same direction as above by pushing up the second protrusion, and this time, the fourth protrusion enters the cam operation window, and the third protrusion is pushed up on the inner surface of the slide member. The slide member is locked in the raised position by contacting the portion above the cam operation window.

〔Example〕

This invention will be described in detail below based on embodiments shown in the drawings.

FIG. 1 is a partially exploded perspective view showing an embodiment in which this invention is applied to an electronic organ. In the same figure, the electronic organ indicated by the symbol 1 as a whole is
Base installed on the floor (main cabinet)
2, and a musical instrument main body 3 disposed above the base 2 so as to be movable up and down.

The base 2 includes a speaker box 9 formed in a box shape long in the left and right direction by a buttful board, a pair of left and right plates 5, a top plate 6, a back plate 7, a bottom plate 8, etc., and a speaker box 9 on both sides of the lower surface of the speaker box 9. A pair of left and right end bases 10 and 11 are arranged, and a pair of left and right side plates 13 and 14 are provided upright on the upper surface of each end base 10 and 11 and cover both sides of the speaker box 9 and support the instrument body 3. Various types of speakers are housed inside the speaker box 9, and an expression pedal 15 is provided at the bottom of the front surface.
A large number of foot keyboards 16 are arranged with some of them protruding forward. The upper end of the full board 4 extends to the lower surface of the musical instrument main body 3, and the upper half of the board 4 is configured to be folded forward from the position of the upper plate 6 as shown by a chain line 17. A support member 20 is erected on the upper surface of the end base 11 along the plate 5, and a pair of front and rear positioning recesses 21 and 22 are formed. A pair of positioning holes 23 and 24 are also formed in the plate 5.

The side plate 14 has the function of a decorative plate that covers the side surface of the speaker box 9 and a support member that supports the musical instrument main body 3. It has approximately the same height as the speaker box 9 and a length l larger than the depth dimension (thickness) of the speaker box 9, and its front end protrudes forward from the buff-full board 4. Additionally, a positioning plate 25 is provided on the inner surface of the side plate 14.
A pair of bushes 26, 27, a clamping plate 28, and a fixing fitting 29 are respectively disposed therein, and a long groove 30 extending over the entire length in the height direction is formed. The positioning plate 25 is disposed at the lower part of the inner surface of the side plate 14, and a pair of claws 31a, 31b extending downward from the side plate 14 hangs integrally at its lower end in correspondence with the positioning recesses 21, 22. It is set up. The pair of bushes 26 and 27 are arranged corresponding to the pair of positioning holes 23 and 24. The clamping plate 28 is fitted onto a slide member 33 which is vertically disposed on the lower side edge of the musical instrument main body 3 and is supported by the support member 20 so as to be able to move up and down. It is formed into a substantially U-shape by bending the plate.

The fixing fitting 29 is for integrally connecting the side plate 14 and the musical instrument body 3, and is a flat plate member 2 attached to the upper front end of the inner surface of the side plate 14.
9a, and an L which is bent into a substantially inverted L shape and whose vertical lower end is rotatably connected to the upper end of the plate 29a.
The L-shaped fitting 29b forms a hinge, and the horizontal part of the L-shaped fitting 29b is connected to the set screw 34.
It is adapted to be fixed to the lower end of the musical instrument main body 3 by means of the following. The long groove 30 is formed to correspond to the buttful board 4, and when the side plate 14 is attached, the side end of the board 4 is inserted over the entire length in the height direction, thereby preventing the upper end of the buttful board 4 from bending. are doing.

When attaching the side plate 14, first insert the pair of claws 31a, 31b of the positioning plate 25 into the positioning recesses 21, 22 diagonally from above, and then insert the long groove 3
0, insert and engage the lower end of the full board 4, then lift the front end of the instrument body 3 slightly, raise the side plate 14 almost vertically, and insert its upper end into the lower part of the instrument body 3. good. Then, the pair of bushes 26 and 27 are inserted into the positioning hole 2.
3 and 24, and the clamping plate 28 is inserted into the slide member 3.
3, and the side ends of the buttful board 4 fit into the long grooves 30 over the entire length in the height direction. Then, by fixing the L-shaped metal fitting 29b to the lower surface of the musical instrument body 3 using the setscrew 34, the installation of the side plate 14 is completed. As a result, the musical instrument main body 3 is supported by the side plate 14 and the slide member 33, and is stably set and held on the base 2 in a playable state.

Note that the side plate 13 on the left side when facing the electronic organ 1
Since the structure is exactly the same as that of the right side plate 14 described above, the explanation thereof will be omitted.

The musical instrument body 3 has a pair of left and right arms 40, 4.
1. It is formed into a substantially box shape by a shelf board 42, a back board 43, a front panel 44 that slopes downward to the front, a foldable keyboard lid 45 that covers the top of this front panel 44, etc.; There are many keys 4 on the surface of
6 and 47 are arranged in two stages, upper and lower, and electrical parts such as various control operators 48 and switches 49 are also arranged. The musical instrument main body 3 is electrically connected to electrical components disposed within the base 2.
The pair of side plates 13 and 14 described above are removed, the upper end of the buffer board 4 is folded, and the slide member 33 is locked by a latch mechanism and a lock pin 50, which will be described later, provided between the support member 20 and the slide member 33. By releasing the state, the slide member 33 descends along the support member 20,
It is configured to be placed on the upper plate 6. The keyboard lid 45 includes a first lid 45A whose rear end is pivotally attached to the instrument body 3, and the first lid 45A.
It consists of a second lid body 45B which is pivotally attached to the front end of the instrument body 3 and folded to the back side, and when the lid is opened, it is folded as shown by the chain line 51 and is attached to the rear end of the upper surface of the musical instrument body 3 at a predetermined angle rearward. It is held upright in a tilted state, and is used as a music board by leaning the music score 52 thereon.

Next, the structures of the support member 20, the slide member 33, and the latch mechanism 60 that is disposed between these members and locks the musical instrument body 3 will be described in detail with reference to FIGS. 2 to 5. The support member 20 is formed into a substantially square cross-sectional shape by bending a metal plate, and a rotatable cam 61 constituting a latch mechanism 60 is disposed on the inner surface of the upper end via a shaft 62. . cam 6
1 has two linear cam surfaces (flat surfaces) 63a and 63b facing in parallel and separated from the axis 62 by approximately the same distance, which are formed into an almost perfectly point-symmetrical cloud shape by punching a metal plate or the like; It has two hump cam surfaces 64 and 65 that connect both ends of these cam surfaces 63a and 63b, respectively.
The protrusions 64a and 65a, 64b and 65b are point symmetrical with respect to the axis 62, and the distance from the center of the cam 61 is set shorter for the protrusions 64a and 65a than for the protrusions 64b and 65b. In addition, cam 6
1 is disposed on a protrusion 66 that is protruded from the inner surface of the support member 20 by burring or the like, as shown in FIG. One side 2 of the support member 20
A cutout window 67 and a lock pin insertion hole 68 are formed in Oa. The cutout window 67 is formed to correspond to the cam 61, and is configured such that a portion thereof protrudes to the outside depending on the rotation angle of the cam 61. The lock pin insertion hole 68 is connected to the notch window 6.
Corresponding to this hole 68, a lock pin insertion hole 69 is also formed on the other side surface 20b. Note that the cam 61 is disposed slightly displaced from the center line of the support member 20 toward one side surface 20a.

The slide member 33 is formed into a substantially U-shape by bending a metal plate, and its upper end is firmly fixed to the lower side edge of the musical instrument main body 3, and its lower end is connected to the support member 20. It is slidably inserted inside. Further, on the inner surface of the lower end portion, a cam 6 is normally located below the cam 61 and separated from the cam 61 by a predetermined distance.
A cam operation piece 7 that together with 1 constitutes a latch mechanism 60
0 is integrally formed by cutting and raising. This cam operating piece 70 is located on the center line of the slide member 33, and therefore, the operating piece 70 is located at a distance d {see FIG. 7a} from the center of the cam 61 on the opposite side of the cutout window 67. It is displaced to . The cutout window 6 is provided on one side 33a of the slide member 33 opposite to the inner side of the one side 20a of the support member 20.
A cam operation window 72 and a lock pin insertion hole 73 are formed in correspondence with the lock pin insertion hole 7 and the lock pin insertion hole 68, respectively, and a lock pin insertion hole 74 is formed in the other side surface 33b in correspondence with the lock pin insertion hole 73.

Lock pin insertion holes 68, 69 formed in the support member 20 and the slide member 33, respectively.
73 and 74 coincide with each other when the slide member 33 is locked by the latch mechanism 60. In this state, the lock pin 50 is inserted into the lock pin insertion holes 68, 69, 73,
74 in common. This is effective in preventing the musical instrument main body 3 from descending under its own weight when the locking state of the slide member 33 by the latch mechanism 60 is unexpectedly released, thereby improving safety. The lock pin 50 is formed as shown in FIG. 6 and integrally has a grip portion 50a bent approximately at right angles to the longitudinal direction at its base. It is inserted and removed. Therefore, notches 80 (see FIG. 1) are formed at the side edges of the back plates 7 and 43, which correspond to the lock pin insertion holes 68 of the support member 20.
is formed. Further, the gripping portion 50a is
The lock pin 50 is inserted into the lock pin insertion holes 68, 6.
By pressing a part of the periphery of the notch 80 of the back plate 43 when inserted into the back plate 9, 73, 74, it has a function of preventing the back plate 43 from vibrating due to musical sounds or the like.

Next, the latch mechanism 60 is
Explain the operation.

Figure a shows a state in which the instrument body 3 is set and held at a predetermined height position by the latch mechanism 60, and in this state, the cam 61 of the two knob cam surfaces 64
The protrusion 64b located further from the center of the slide member 33 projects outward from the cam operation window 72 and the cutout window 67, and the protrusion 64a located closer to the center of the slide member 33
The cam operation window 72 is located on the inner side of one side 33a.
It is in contact with the upper part. Therefore, when the slide member 33 tries to descend due to its own weight, the cam 61 receives a clockwise rotational force, so the convex portion 64a presses the slide member 33 against the support member 20 from inside, thereby The sliding member 33 is prevented from descending. Therefore, in this state, even if the aforementioned lock pin 50 is removed, the musical instrument main body 3 will not fall due to its own weight. At this time, the cam operating piece 70 is located below the convex portion 65a at a predetermined distance, and the upper edge 83 of the cam operating window 72 is located at the trough 8 of the two-bump cam surface 64.
Pressing 4.

Next, after removing the lock pin 50 from the lock pin insertion holes 68, 69, 73, and 74 (see FIGS. 4 and 5), the musical instrument body 3 is lifted up by a height D. Then, as shown in FIG. 7b, the slide member 33 rises together with the musical instrument body 3, so the cam operating piece 70 also rises by a distance D, pushing up the convex portion 65a, and causing the cam 61 to move around the shaft 62 as a fulcrum. Rotate clockwise by a predetermined angle. When the lower linear cam surface 63b becomes approximately horizontal after being rotated by a predetermined angle, the lower edge 86 of the cam operation window 72 comes into contact with the convex portion 64b. Therefore, the slide member 33 is prevented from rising any further. In this state, the convex portion 64a is located within the cam operation window 72. When the slide member 33 is lowered after being raised, the convex portion 64
b is released from the lower edge 86 of the cam operation window 72, and the upper edge 83 presses the protrusion 64a, so the cam 61 rotates approximately 90 degrees clockwise as shown in FIG. The surface 64 is connected to the cam operation window 72.
to be ejected from. As a result, the slide member 33 is completely released from the latch mechanism 60 and the support member 2
0 to the lowest position, that is, to the position where the musical instrument main body 3 comes into contact with the upper surface of the upper plate 6 (see FIG. 1) as shown by a chain line 90 in FIG. Therefore, if the electronic organ 1 is packed in this state, the height of the package is low and the package can be made small, making it possible to save significantly on packaging costs.

Next, in order to return the musical instrument main body 3 to its original height position, the slide member 33 may be raised until the cam 61 prevents it from rising any further. Then, the cam operation piece 70 presses the convex portion 64b and rotates the cam 61 by a predetermined angle clockwise as shown in FIG.
The protrusion 65a that is far from the center is the cam operation window 7.
2 and protrude outside from the cutout window 67. When the slide member 33 is lowered in this state, the upper edge 83 of the cam operation window 72 presses the protrusion 65b to rotate the cam 61 clockwise by a predetermined angle, and accordingly the protrusion 65a slides. By contacting the inner surface of one side 33a of the member 33, the state returns to the same state as in FIG. 7a, and the slide member 33
prevent the descent of

That is, the latch mechanism 60 locks the slide member 33 when it rises for the first time and prevents it from coming down, and releases the locked state when it rises for the second time.

In the above embodiment, the lock pin 50 is used in addition to the latch mechanism 60 to prevent the sliding member 33 from descending.
This invention is not limited to this and does not necessarily require the lock pin 50. Also, cam 61
Of course, the cam operation piece 70 may be provided on the slide member 33 and the cam operation piece 70 may be provided on the support member 20.

[Effect of idea]

As explained above, the slide mechanism according to this invention has a latch mechanism composed of a substantially cloud-shaped cam, a cam operation piece, a cam operation window, and a cutout window, so the structure is simple and the slide member can be held at a predetermined height. It can be reliably locked in position, and when applied to the main body of a musical instrument, for example, it can be packed compactly, resulting in high transport efficiency and significant reductions in packaging and transport costs. Further, since the main body of the musical instrument simply moves up and down while maintaining a horizontal state, the posture and relative positional relationships of internal mechanisms, parts, etc. do not change, and performance can be maintained stably. Also, when the instrument body rises for the first time, the cam locks the instrument body,
Since the locked state is released by raising the instrument body a second time, the operation of raising and lowering the musical instrument body is simple and easy.

[Brief explanation of the drawing]

Fig. 1 is a partially exploded perspective view showing an example of applying this invention to an electronic organ, Fig. 2 is a side view of the main part, Fig. 3 is a sectional view taken along the line of Fig. 2, and Fig. 4
The figure is a perspective view of the main part of the slide member, FIG. 5 is a perspective view of the main part of the support member, and FIG. 6 is a perspective view of the lock pin.
FIGS. 7a to 7d are diagrams for explaining the operation of the latch mechanism. DESCRIPTION OF SYMBOLS 1...Electronic organ, 2...Base, 3...Musical instrument body, 20...Support member, 33...Slide member, 60...Latch mechanism, 61...Cam, 62...
...shaft, 63a, 63b... linear cam surface (flat part),
64a, 64b, 65a, 65b... Convex portion, 67
... Notch window, 70 ... Cam operation piece, 72 ... Cam operation window.

Claims (1)

[Claims for Utility Model Registration] A support member having a cutout window; a slide member having a cam operation window corresponding to the cutout window and slidably disposed with respect to the support member; and the support member. a flat plate-shaped cam rotatably provided on the member via a shaft and located on the opposite side of the notch window across the cam operation window; and a cam operation provided on the slide member and located below the cam. The cam includes a first convex portion spaced apart from the rotation center of the cam, and a straight line connecting the rotation center and the first convex portion, and a straight line connecting the rotation center to the rotation center. a second protrusion provided on a straight line passing through and at a longer distance from the rotation center than the first protrusion; and a second protrusion provided at a point symmetrical position with respect to the first protrusion and the rotation center. a third convex portion, a fourth convex portion provided at a point symmetrical position with respect to the second convex portion and the rotation center, and a first flat portion connecting the first and fourth convex portions; , has a second flat part that connects the second and third convex parts and is substantially parallel to the first flat part, and usually the second or fourth convex part projects into the cam operation window and the notch, The first or third protrusion presses the slide member against the support member to lock the slide member at a predetermined height position, and when the slide member moves upward, the first or third protrusion operates the cam. The cam operation piece is provided on the opposite side of the cam operation window across the center of rotation of the cam, and as the slide member moves upward, When it comes into contact with the cam, the second or fourth convex portion is pressed against the cam operation window to prevent the slide member from rising any further, and when the slide member descends from this state, the cam is released and the cam operation window is pressed against the cam operation window. When the user exits the window and the slide member rises from the lowest position, the second or fourth protrusion is pushed up to rotate the cam, and the fourth or second protrusion enters the cam operation window. A slide mechanism featuring