JP2003263150A - Cover closing structure of keyboard instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover closing structure of a keyboard instrument capable of facilitating the work to attach and remove a cover and reducing a manufacturing cost. <P>SOLUTION: The cover closing structure of the keyboard instrument has the cover 13 for freely longitudinally closably covering an operator, such as a keyboard, which is disposed at a musical instrument body provided with a pair of outer rims 5 and a connecting member, such as a bench top for these outer rims and is supported at the musical instrument body. The structure is provided with a pinion 27 and protrusion 29 which are disposed on both sides of a rear part 16 of the cover, a slide rack 35 which is disposed in the rear parts 22 on the inner sides of the respective outer rims 5 and guides the movement in the rear part of the cover by meshing with the pinion 27 and a holding section 33 which extends along the slide rack and prevents the pinion from being detached upward from the slide rack. The holding section 33 terminates in such a manner that the protrusion is released from the slide rack and can be taken upward when the cover moves forward and moves to the position covering the operator up to its front end. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard instrument such as an electronic piano and an electronic organ, which is provided with a cover for opening and closing operation elements such as a keyboard and operation switches. The present invention relates to a lid opening and closing structure for a keyboard instrument. In this specification, the side of the keyboard instrument where the player is located is referred to as “front”, and the opposite backboard side is referred to as “rear”. 2. Description of the Related Art Conventionally, a keyboard instrument such as an electronic piano is provided with a cover for opening and closing the operator so as to protect the operator such as a keyboard when not in use. This lid is
A shaft member extending in the key arrangement direction is provided at a rear end, and a pinion is rotatably attached to both ends. The pinion meshes with a slide rack provided inside the side plate of the musical instrument main body, whereby the lid slides smoothly in the front-rear direction of the musical instrument main body. Both ends of the shaft member protrude from the pinion, and a groove extending in the front-rear direction is formed inside the side plate. Sliding of the protruding portion along the groove prevents the pinion from coming off the slide rack. In consideration of taking the positions of the front end and the rear end of the groove substantially in each of the closed state and the open state of the lid, the protruding portion is formed in the groove at an intermediate portion of the groove and opened upward. Is to be inserted into. [0003] However, in the above configuration, a sealing member for closing the opening is required after the protruding portion is inserted into the groove, so that the number of parts increases and the manufacturing cost increases. Problem. In addition, when attaching and detaching the lid, the sealing member must be attached to and detached from the opening, so that there is a problem that the operation becomes complicated. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a cover opening and closing structure for a keyboard instrument, which facilitates the work of attaching and detaching the cover and reduces the manufacturing cost. The purpose is to: [0005] In order to achieve the above object, the present invention provides a keyboard instrument main body provided with a pair of side plates and a connecting member for connecting the side plates, and is supported by the instrument main body. A cover provided movably in the front-rear direction between a position covering the control and an open position in a state where the control is substantially supported by the side plate; and both sides of the front end of the cover. A front engagement portion provided on the front portion, a front guide portion provided on an inner front portion of each of the side plates and engaging with the front engagement portion to guide the movement of the front portion of the lid; Rear engagement portions provided on both sides of the body rear portion, and a rear guide portion provided on the inner rear portion of each of the side plates and engaging with the rear engagement portions to guide the movement of the lid rear portion; Extending along the rear guide portion, and the rear engagement portion is disengaged upward from the rear guide portion. An engagement holding portion that prevents the rear engagement portion from moving when the lid moves forward and covers the operation element to a front end. It is an object of the present invention to provide a lid opening / closing structure for a keyboard musical instrument, which is terminated so as to be released from the engagement holding portion and to be able to be taken out upward. According to such a configuration, when the lid is disposed at a position covering the front end of the operation element, the engagement between the engagement holding portion and the rear engagement portion is released. Since the holding portion is terminated, the rear portion of the lid can be disengaged simply by disposing the lid at the position of the front end, and the lid can be attached and detached. Therefore, unlike the related art, there is no need to provide an opening for inserting the rear engagement portion and a sealing member for closing the opening in the intermediate portion of the engagement holding portion, thereby reducing the manufacturing cost. it can. Also,
Since the operation of attaching and detaching the sealing member is not required, the operation time can be shortened. [0007] In the lid opening / closing structure, the front guide has a bent portion bent downward near the foremost portion of the range of movement of the lid, and when the front guide reaches the lower end of the bent portion. Preferably, the rear engagement portion is configured to be released from the engagement holding portion beyond the end. Thereby, the position where the lid is removed is limited, and it is possible to prevent the lid from being easily removed. The engagement holding portion extends parallel to the rear guide portion and reaches the end, and the rear engagement portion includes a rolling element rolling on the rear guide portion and a rolling member extending along the engagement holding portion. It is further preferable that the engagement holding portion further includes a protruding portion that is restricted by the engagement holding portion from moving upwardly beyond the end. According to this configuration, the rolling element guides the movement of the lid while rolling without sliding on the rear guide portion.
The lid can be moved smoothly without rattling. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a case where an embodiment of a lid opening / closing structure for a keyboard instrument according to the present invention is applied to an electronic piano will be described with reference to the drawings. FIG. 1 is a perspective view of an electronic organ to which the present embodiment is applied, FIG. 2 is a perspective view showing the inside of the electronic organ, and FIG. 3 is a front view and a side view showing a lid. As shown in FIG. 1, an electronic piano 1 according to this embodiment has a pair of side plates 5 extending in the front-rear direction on a lower plate 3, a top plate 7, a shelf plate 9 and a back plate connecting these side plates 5. (Connecting member).
An operator such as a keyboard provided on the musical instrument main body 11 is covered by a lid 13 that slides in the front-rear direction. In the present embodiment, as shown in FIG. 2, the operating elements are a keyboard 15 and a power switch 17 supported at the center and the front of the shelf 9. The controls may include those related to the performance and operation of a keyboard instrument, such as a tone color setting switch, an effect setting switch, and an automatic performance-related switch group. As shown in FIG. 3, the lid 13 is formed in a rectangular plate shape. The lid 13 has a plate-like member 19 formed by extrusion of aluminum at the forefront.
The plate member 19 is attached so as to cover the front end surface of the keyboard 15. Front end 14 of lid 13
a, that is, on the side surface of the front end of the plate member 19, a guide pin 21 that engages with a guide groove described later is attached. On the other hand, a shaft member 23 extending in the width direction of the lid 13, that is, in the direction in which the keyboards 15 are arranged, is attached to the rear end 16 a of the lid 13 via a bracket 25. Shaft member 2
The pinion 27 is rotatably attached to both ends of 3. And both ends of the shaft member 23 are pinion 27
A projection 29 is formed in a state of projecting slightly outward from the projection, and the projection 29 is engaged with a groove-shaped holding portion described later. In the present embodiment, the guide pin 21 constitutes the front engaging portion of the present invention, and the pinion 27 and the projecting portion 29 constitute the rear engaging portion of the present invention. As shown in FIG. 2, the side plate 5 of the musical instrument main body 11 is provided.
A guide groove 31 that engages with the guide pin 21 of the cover 13 and guides the cover front portion 14 is formed in the front inside 20 of the cover 13. The guide groove 31 has an L-shape from the rear to the front of the keyboard 15 in a side view of the musical instrument main body 11.
5 near the rear. That is, the guide groove 31 is formed by a first groove portion 31 a extending vertically along the front end face of the keyboard 15, and a keyboard 15 extending from the upper end of the first groove portion 31 a.
And a second groove 31b extending rearward along the upper surface of the second groove 31b. On the other hand, a holding portion 33 with which the projecting portion 29 of the lid 13 is engaged and a slide rack 35 with which the pinion 27 meshes are provided on the rear inner side 22 of the side plate 5. Starting from the vicinity of the rear end of the groove 31, it extends to the vicinity of the back plate 37 while slightly descending backward.
The holding portion 33 is formed in a U-shape extending in the horizontal direction, and is screwed inside the side plate 5. That is, it has a groove 39 inside, and is formed so that the foremost part ends at the opening 40. The projecting portion 29 of the lid 13 is engaged with the groove 39 of the holding portion 33 and is slidable in the front-rear direction along the groove 39. The slide rack 35 is attached to a lower side of the holding unit 33. Holder 33 and slide rack 35
Alternatively, they may be formed of different members, or they may be integrally formed. In this embodiment, the holding portion 33 constitutes the engagement holding portion of the present invention, and the slide rack 35 constitutes the rear guide portion of the present invention. The holding unit 33 and the slide rack 35
The lid 13 and the lid 13 are configured to have the following positional relationship. That is, when the lid 13 is located at the foremost position covering the front end 24 of the operation element, the pinion 27 is engaged with the front end of the slide rack 35 and the projection 2
Reference numeral 9 denotes a state in which the engagement of the holding portion 33 with the groove 39 has been released, that is, a state in which the holding portion 33 has slipped slightly forward from the opening 40.
Then, when the lid 13 is slid slightly backward from this state, the protruding portion 29 is engaged with the groove 39 of the holding portion 33. Next, a method of attaching and detaching the lid in the lid opening / closing structure configured as described above will be described. As shown in FIG. 4, when attaching the lid 13 to the musical instrument main body 11, first, either the left or right guide pin 21 is inserted into one of the guide grooves 31 to the farthest position, and then the other guide pin 21 is inserted. Is inserted into the other guide groove 31, and the guide pin 21 is engaged with the foremost part of the guide groove 31, that is, the lower end of the first groove part 31a. Subsequently, the rear portion 16 of the lid 13 is centered on the guide pin 21.
Is pivoted to engage the pinion 27 at the rear end 16 a with the slide rack 35. At this time, since the lid 13 is at the forefront position, the protrusion 29 protruding from the pinion 27
A position slightly forward from the opening of the holding portion 33, that is, the holding portion 3
3 is disposed at a position where it does not engage. When the front portion 14 of the lid 13 is lifted from this state, the rear portion 1 of the lid 13 is lifted.
6 moves rearward along the slide rack 35. After that time, the projecting portion 29 engages with the holding portion 33. That is, as shown in FIG. 5, since the protruding portion 29 protruding outward from the pinion 27 engages with the groove 39 of the holding portion 33,
When the lid 13 slides, the pinion 27 is prevented from being detached from the slide rack 35 and moving upward. Finally, the top plate 7 is arranged so as to cover the rear portion 22 of the side plate 5. As shown in FIG. 4, the top plate 7 has a locking member 43 provided on the bottom locked with a plate-shaped support member 45 provided on the rear portion 22 of the side plate 5, and a rear end portion of the back plate 37. It is fixed by engaging with the upper end of the. To open the lid 13, the front plate 1
9 can be easily opened by lifting it up along the guide groove 31 and then pushing it back. As described above, the pinion 27 is provided on the lid 13, and the slide rack 35 is provided.
For example, even when only one side of the lid 13 is gripped and slid, the lid 13 moves in parallel and smoothly opens and closes without rattling. Can be. When the cover 13 is to be removed, the top plate 7 is removed after disposing the cover 13 at the frontmost position. When the lid 13 is moved to the foremost position, the protruding portion 29 is released from the holding portion 33 and can be taken out upward.
3 can be lifted, and the pinion 27 can be disengaged from the slide rack 35. At this time, since the guide pin 21 moving to the forefront of the guide groove 31 is the center of rotation, the lid 13 can be easily lifted. Finally, when the guide pin 21 is removed from the guide groove 31, the removal of the lid 13 is completed. The guide pins 21 may be removed by performing the above-described mounting method in reverse order. In this embodiment, the foremost part of the top plate 7 is disposed so as to cover the last part of the lid 13 at the foremost position. Therefore, when the top plate 7 is attached, the lid 13 cannot be lifted upward and cannot be removed. As described above, according to the present embodiment, when the lid 13 is located at the frontmost position, the holding portion 33 is terminated so that the engagement between the holding portion 33 and the protruding portion 29 is released. Since the lid 13 is located at the frontmost position,
The rear portion 16 of the lid 13 can be disengaged and attached, and the lid can be attached and detached. Therefore, unlike the related art, it is not necessary to provide an opening for inserting the protruding portion and a sealing member for closing the opening in the intermediate portion of the holding portion, and the manufacturing cost can be reduced. Further, since the work of attaching and detaching the sealing member is not required, the work time can be shortened. Further, since the guide groove 31 in which the guide pin 21 at the front end of the cover is engaged has a bent front portion, the cover 13 not only moves the cover 13 from the rear to the front, but also The lid 13 cannot be located at the forefront position unless the front end 14a of the body 13 is dropped down along the bent portion. Thus, in the present embodiment, the lid 13
Is limited, the cover 13
Can be prevented from being easily removed. The present invention is not limited to the above embodiment, and various changes can be made without departing from the gist of the present invention. For example, in the above embodiment, the holding unit 33
Although the projecting portion 29 engaging with the shaft member 23 is constituted by both end portions of the shaft member 23, a member separate from the shaft member 23 may be provided on the lid 13, and this may be engaged with the holding portion 33. it can. The positions of the protrusion 29 and the pinion 27 are as follows.
It is not always necessary to provide the rear end 16a of the cover 13, and the cover 13 can be provided at a position extending from the middle to the rear end of the cover 13. The engagement between the front end 14a of the cover 13 and the front portion 20 of the side plate 5 is performed by the guide pin 21 and the guide groove 31, but the concave and convex relationship of these members is reversed. You can also. For example, the guide groove 31 can be replaced by a ridge, and the guide pin 21 of the lid 13 can be a U-shaped member having a recess that engages with the ridge. Similarly,
A U-shaped member having a recess is provided in the rear portion 16 of the lid 13, and a ridge engaging with the U-shaped member is provided in the holding portion 33, thereby preventing the pinion 27 from being detached from the slide rack 35. You may do so. In the above embodiment, the slide rack 35 and the pinion 2
7, but is not limited to this.
For example, a guide rail and a rolling element (for example, a rubber roller) that rolls while being held on the rail by a frictional force can be used. In other words, it is only necessary to provide a rolling element that rolls securely without sliding on the rails so that the sliding body slides smoothly even if one side of the lid 13 is pressed. In the above-described embodiment, the pinion 27 and the projection 29 are provided on the rear side of the lid 13, but the projection 29 may not be provided. That is, the retaining portion 33 may be configured to cover the upper portion of the pinion 27 to prevent the pinion 27 from being detached. In this case, the pinion 27 constitutes the rear engagement portion of the present invention. As described above, the members engaging with the front end portion 14a and the rear portion 16 of the lid 13 are formed as separate members at the front portion 20 and the rear portion 22 of the side plate 5. However, even if these are integrally formed. Good. That is, the front guide portion and the rear guide portion of the present invention can be formed by integral molding. In the above embodiment, the case where the present invention is applied to an electronic piano has been described. However, it is needless to say that the present invention can be applied to any keyboard instrument having a cover that can open and close the operation element. is there. Further, the lid opening / closing structure of the present invention can be applied to a lid that covers only the keyboard, the keyboard and other operators, and only the operators other than the keyboard. As is clear from the above description, according to the lid opening / closing structure of the present invention, when the lid is disposed at a position covering the front end of the operating element, the engagement holding portion and the rear Since the engagement holding portion is terminated so that the engagement state with the side engagement portion is released, only by disposing the lid at the position of the front end, the engagement holding portion and the rear side engagement portion Can be disengaged, and the lid can be attached and detached. Therefore, there is no need to provide an opening for inserting the rear engagement portion and a sealing member for closing the opening as in the related art, thereby reducing the manufacturing cost and shortening the work time for mounting and dismounting. It is possible to do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an electronic organ to which an embodiment of a lid opening / closing structure according to the present invention is applied. FIG. 2 is a perspective view showing the inside of the electronic organ of FIG. FIG. 3 is a plan view and a side view showing a lid of the electronic organ of FIG. 1; FIG. 4 is a cross-sectional view illustrating attachment and detachment of a lid in the electronic organ of FIG. 1; FIG. 5 is a diagram showing a cut end surface along a line AA in FIG. 4 together with a pinion. DESCRIPTION OF SYMBOLS 1 Keyboard musical instrument 5 Side plate 7 Top plate (connecting member) 9 Shelf board (connecting member) 11 Musical instrument main body 14 Front lid 14a Front lid end 15 Keyboard (operator) 16 Rear lid 16a Cover Rear end portion 17 Power switch (operator) 20 Front side plate 21 Guide pin (front side engagement portion) 22 Side plate rear portion 24 Keyboard front end (operator front end) 27 Pinion (rear side engagement portion) 29 Projection portion (rear side engagement) Joint part) 31 Guide groove (front guide part) 33 Holding part (engagement holding part) 35 Slide rack (rear guide part) 37 Back plate (connecting member)

Claims (1)

Claims 1. An instrument provided on a musical instrument body having a pair of side plates and a connecting member for connecting the pair of side plates, and an operation element supported by the musical instrument body is substantially supported by the side plates. In the state where
A lid movably provided in the front-rear direction at a position covering the operation element and a position at which the operation element is opened; front engagement portions provided on both sides of the front end of the lid; A front guide portion that is provided on the front side and guides the movement of the front portion of the lid by engaging with the front side engagement portion; a rear side engagement portion provided on both sides of the rear portion of the lid; A rear guide portion provided at an inner rear portion of the side plate and engaging with the rear engagement portion to guide the movement of the lid rear portion; and extending along the rear guide portion, wherein the rear engagement portion is An engagement holding portion for preventing the upper holding member from being detached upward from the rear guide portion, wherein the engagement holding portion moves to a position where the lid moves forward and covers the operation element to a front end, The rear engagement portion is terminated so that the rear engagement portion is released from the engagement holding portion and can be taken out upward. Lid closing structure of a keyboard instrument, characterized in that.