JPH1173178A - Keyboard device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a keyboard device contributing to the facilitation of the design and production of metal mold members and the improvement in strength and life without entailing the complication of process and the degradation in product quality. SOLUTION: A key unit is constituted by connecting keys 2, 3, 4 respectively via junctures to a common supporting section. A juncture perpendicular part makes the key 2 freely oscillatable in a key row direction and a juncture horizontal part makes the key 2 freely oscillatable in a key touch direction, respectively. When the key unit 1 is mounted at a frame section 14, the left flank 11b of a part to be guided 11 which is inserted into a groove part 19M comes into contact with the right flank 19La of a left side wall part 19L in a surface- to-surface contact state and the curving at the juncture perpendicular part is corrected in a correction direction F1. The key 4 is similarly corrected in the correction direction F2. As a result, the expanding state of spacings is easily corrected and the respective keys 2, 3, 4 are put into a state parallel with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard device in which a key unit integrally formed by a mold member is attached to a frame.

[0002]

2. Description of the Related Art Conventionally, a keyboard device used for a keyboard musical instrument such as an electronic organ is known in which a key unit is assembled to a frame part forming a part of a case. For the sake of simplicity, it is known that a plurality of keys are connected to a common support portion via a connection portion and are integrally formed. However, in this type of keyboard device, in particular, since each key in the key unit is adjacent to each other with a small gap, the thickness (rib portion) corresponding to the gap of the die member used for integral molding is large. Not only does the strength of the mold member decrease, but also its manufacture is not easy. Therefore, for example, it is necessary to divide the white key unit into two parts in the octave range and separately mold the white key units, and then combine these steps.

In order to solve such a drawback, a plurality of keys are integrally formed with their common support portions (base end portions) connected to each other and the gap between them is widened toward the distal end portion. A method of manufacturing a keyboard device in which a common support portion is deformed so that each key is made parallel to each other is already known (Japanese Patent Publication No. 43959/1989).

In the first method of this manufacturing method, a linear comb-shaped elastic metal plate (which forms a part of a common support portion after the key unit is manufactured) is formed in a free state in a direction in which the comb side expands. After being elastically deformed in an arc shape, it is set in a mold device. And
After the resin is cooled and solidified, each key is integrally molded in the expanded state so that each key is fixed to each tooth of the comb portion of the elastic metal plate in the expanded state, and then the elastic deformation of the elastic metal plate is released. . As a result, a key unit is obtained in which each key is integrally formed on the comb portion of the elastic metal plate and each key is parallel to each other.

Alternatively, in a second method of this manufacturing method, a connecting portion (base end) which is curved in a free state and a white key are integrally formed so as to expand toward each other at the tip of each white key. After molding, the black keys are screwed and fixed so that the white keys are in parallel with each other by elastic deformation to obtain a key unit integrated with all keys, and this is assembled to the frame. At this time, a V-shaped groove or a U-shaped groove is provided between the white keys at the rear part of the connecting portion to facilitate elastic deformation of the connecting portion.

[0006]

However, in the first method of the above-mentioned conventional manufacturing method, it is necessary to separately manufacture an elastically deformable common support portion in advance, and in the molding by a mold device, Since a step of expanding the elastic metal plate is required, the step is complicated, and there is room for improvement in simplifying the step.

In the second method of the above-mentioned conventional manufacturing method, the key unit is mounted on the frame in a state where the connecting portion is deformed. Therefore, a feeling of rubbing between adjacent keys occurs due to a variation among products. Not only that, distortion due to elastic deformation will always remain in the connection part, and if the product has been shipped for a long time, loosening of the connection part's screws, etc. will easily occur,
There is a problem in quality such as a feeling of rubbing between adjacent keys may occur later.

SUMMARY OF THE INVENTION An object of the present invention is to provide a keyboard device capable of facilitating design and manufacture of a mold member and improving strength and life without complicating the process and deteriorating product quality. is there.

[0009]

According to a first aspect of the present invention, there is provided a keyboard apparatus comprising: a plurality of keys having a distal end and a proximal end; a common support for supporting the plurality of keys; And a connection portion provided at a base end portion of each key and connecting the key and the common support portion to each other, wherein the plurality of keys are connected to the common support portion through the connection portion to the common support portion. In the state of being pivotably connected in the key-pressing direction and the key-arranging direction, and is formed integrally with the connection portion and the common support portion by expanding a gap between them toward the tip end. At least one key unit, a frame member on which the key unit is mounted, and a key provided on the key and the frame member;
An engaging means for deforming the connecting portion to make the plurality of keys parallel to each other and to engage the key unit with the frame member is provided.

[0010] The engaging means comprises guide means provided on the frame member, and guided means provided on each of the keys and engaged with corresponding ones of the guide means. Are preferably made parallel to each other by engagement of the guide means and the guided means (claim 2).

Furthermore, it is preferable that the guide means is configured to regulate swinging of the plurality of keys in the key arrangement direction when the key is pressed through the guided means (claim 3).

It is preferable that the guide means and the guided means can be brought into contact with each other in a surface-contact state such that the keys are parallel to each other (claim 4).

[0013] Further, the guide means is provided on the frame member corresponding to each key, and extends parallel to a longitudinal axis of the key when the key unit is mounted on the frame member, and is provided with each other. The guided means is a projection provided on each of the keys and having both side surfaces extending parallel to the longitudinal axis of the keys, the walls being formed by a pair of walls defining a groove therebetween. Then, the guide means may comprise a protrusion inserted into a groove between the pair of wall portions of the corresponding one of the guide means (claim 5).

It is preferable that the connecting portion of the key unit bends in the key arrangement direction such that the gap between the keys becomes wider as the plurality of keys reach the leading end. .

Further, the connecting portion is located on the common support portion side, and a vertical portion capable of swinging a corresponding one of the keys so as to be swingable in a key arrangement direction; The corresponding key may be constituted by a horizontal portion which can be bent so as to swing in the key pressing direction (claim 7).

In the guided means, each of the keys has a side surface, and the guided means has a first projection provided on each of the keys and capable of engaging with a corresponding one of the guiding means. And a second protrusion protruding outward from a side surface of the key in the key arrangement direction from the first protrusion.

[0017] Further, a stopper provided on the frame member side is provided, and the second protruding portion contacts the stopper when each of the keys is not depressed, and is in an extreme position when each of the keys is not depressed. It is preferable to have a locking surface for restricting the pressure (claim 9).

The guide means is provided on the frame member in correspondence with each of the keys. When the key unit is mounted on the frame member, the guide means extends parallel to the longitudinal axis of the key and are mutually separated. The guided means is a projection provided on each of the keys and having both side surfaces extending parallel to the longitudinal axis of the keys, the walls being formed by a pair of walls defining a groove therebetween. The two side surfaces may be formed of protrusions which are inserted in the grooves between the pair of wall portions of the corresponding ones of the guide means while being sandwiched between the pair of wall portions of the guide means. Item 10).

According to the keyboard device of the first aspect, the key unit is integrally formed with the gap between the keys being expanded toward the tips of the plurality of keys when the key unit itself is manufactured. This makes it possible to secure an appropriate thickness of a portion of the mold member for manufacturing the key unit corresponding to the gap between the keys, thereby facilitating the design and manufacture of the mold member, and improving strength and life. Can be improved. Further, when assembling the key unit to the frame member, the plurality of keys are made parallel to each other by deforming the connecting portion of the key unit. This makes it possible to easily make the plurality of expanded keys parallel to each other, thereby avoiding complication of the process and deterioration of product quality.

Therefore, it is possible to simplify the design and manufacture of the mold member and to improve the strength and the life without complicating the process and deteriorating the product quality.

According to the keyboard device of the second aspect, the plurality of keys are made parallel to each other by the contact between the guide means provided on the frame member and the guided means provided on the plurality of keys. Thus, the guide means and the guided means always contact each other, so that an appropriate gap between the keys can be secured.

According to the keyboard device of the third aspect, the guide means and the guided means have not only a so-called key guide function as in the related art but also a function of making a plurality of expanded keys parallel to each other. And the configuration can be simplified.

According to the keyboard device of the fourth aspect, the guide means and the guided means are always in sliding contact with each other in the same surface during a normal key pressing operation, so that an appropriate gap between the keys is ensured. In addition, mechanical noise at the time of key pressing operation can be prevented.

According to the keyboard device of the sixth aspect, since the connecting portion of each key having a small mass and a small restoring force can be bent, the keys can be easily made parallel to each other, and a feeling of rubbing occurs. Never do.

According to the keyboard device of the eighth aspect, since the second projection is formed to protrude laterally outward of the key, an undercut of the mold at the time of manufacturing the key is avoided. Therefore, the cost of the mold can be reduced, and the manufacturing cost of the keyboard itself can be reduced.

According to the keyboard device of the ninth aspect, since the second protrusion is an upper limit stopper that regulates the extreme position of each key when the key is not pressed, the configuration is compact and the number of parts is reduced. It becomes possible to manufacture. On the other hand, since the guided portion of the key and the second projection for the upper limit stopper of the key are adjacent to each other, and both can be formed integrally with the key body, the manufacturing cost can be further reduced.

According to the keyboard apparatus of the tenth aspect, the pair of walls of the guide means comes into surface contact with the plate-shaped guided means provided on the key from both sides in the width direction of the key, and the key moves. Therefore, rolling around the longitudinal axis of the key can be prevented. That is, a stable key press / release operation can be performed.

[0028]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIGS. 1 and 2 show a key unit in a keyboard device according to a first embodiment of the present invention. FIG. 1 is a plan view of the key unit as viewed from above, and FIG. 2 is a perspective view of the key unit as viewed from the front right lower side.

The key unit 1 is formed by integrally molding the key 2,
The key 3 and the key 4 are connected to the common support unit 8 via the connection unit 5, the connection unit 6, and the connection unit 7, respectively. Connection part 5
Is composed of a connecting portion vertical portion 5a as a second half portion and a connecting portion horizontal portion 5b as a first half portion. The vertical portion 5a makes the key 2 swingable in the key arrangement direction, and the horizontal portion 5b makes the key 2 swingable in the key pressing direction. The keys 2, 3, and 4 are configured as a C key, a D key, and an E key, respectively, in the present embodiment.

The vertical portions 6a and 7a and the horizontal portions 6b and 7b of the connection portions 6 and 7 are connected to the vertical portion 5a and the horizontal portion 5b of the connection portion 5, respectively.
It is configured similarly to.

The central axis in the longitudinal direction of the key 3 is substantially perpendicular to the common support portion 8, while the central axis in the longitudinal direction of the key 2 is obliquely leftward at the vertical portion 5 a of the connecting portion 5. Bent, key 4
Is bent obliquely rightward at the vertical portion 7a of the connection portion 7. Therefore, in the key unit 1, in the free state, the gap between the keys 2, 3, and 4, that is, the gap 9 between the keys 2 and 3 and the gap 10 between the keys 3 and 4 are formed at the tip (front). ).

The key unit 1 is integrally formed with a mold member (not shown) including a movable mold and a fixed mold. The mold member is in the expanded state described above (FIG. 1) after the key unit 1 is molded.
It is formed so that it becomes. Thereby, each gap 9,
It is possible to prevent the thickness of the rib portion of the mold member corresponding to 10 from becoming extremely thin.

At the front of each of the keys 2, 3, and 4, as shown in FIG.
The guided portion 13 extends downward integrally (guided means, engaging means, first projection). In addition, small projections 11A,
12A and 13A (second protrusions) are integrally formed. These small projections 11A, 12A, and 13A are provided to project rearward and sideward (key arrangement direction), respectively. Each of the small projections 11A, 12A, and 13A has locking surfaces 11a, 12a, and 13a facing the key body side so as to come into contact with an upper limit stopper 17 to be described below when the key is not pressed (FIGS. 5 and 7). A contact device (abu that contacts the upper limit stopper 17)
ment device).

The small projections 11A, 12A, 13A
Is formed so as to protrude laterally outward of each of the keys 2, 3, and 4, so that a mold at the time of manufacturing the key can be formed so as to avoid undercut.

FIGS. 3 to 6 are partial views showing a state in which the key unit 1 of the keyboard device according to the present embodiment is assembled. FIG. 3 is a plan view of the keyboard device as viewed from above, and FIG.
5 is a sectional view taken along the line AA, FIG. 5 is a sectional view taken along the line BB in FIG. 3, and FIG. 6 is a perspective view of the guide portion.

FIG. 7 is an enlarged view of FIG. 4 showing the key and the guide portion.

The keyboard device according to the present embodiment has the key unit 1 assembled to the frame portion 14 (frame member). When the key unit 1 is assembled, the expanded state of the key unit 1 is corrected. The keys 2, 3, and 4 are in parallel with each other as shown in FIG. The correction of the expanded state of the key unit 1 is performed by the guide portions 19 and 21 via the guided portions 11 and 13 as described later.

As shown in FIGS. 4 and 5, a printed board 15 is fixed to the bottom surface 14a of the frame portion 14 via spacers 30 and 31. The printed circuit board 15 has a key switch unit 16 for detecting a key pressing operation, and locking surfaces 11a, 12A of small projections 11A, 12A, 13A of the keys 2, 3, and 4.
An upper limit stopper 17 is provided which abuts on the keys a, 13a and regulates the upper limit positions of the keys 2, 3, 4 in the key release direction.

Each key 2, 3,.
4, each key 2,
Lower limit stoppers 18 are provided to regulate lower limit positions in the key pressing directions 3 and 4. The frame portion 14 is further provided with a guide portion 19, a guide portion 20, and a guide portion 21 that engage with the respective guided portions 11, 12, and 13 (guide means, engagement means) (FIGS. 4, FIG. 7). Each of the guide portions 19, 20, 21 is similar to a conventional keyboard device,
It also performs a so-called key guide function for restricting the swinging of the keys 2, 3, and 4 in the key arrangement direction at the time of the key pressing operation after assembly.
In addition, through the engagement with the guided parts 11, 12, and 13, the key unit 1 also has a function of correcting the expanded state of the key unit 1 when the key unit 1 is assembled to the frame unit 14.

As shown in FIGS. 4, 6 and 7, the guide 19 is provided at the front of the frame 14.
4 and are integrally formed. The guide portion 19 includes a left side wall portion 19L and a right side wall portion 19R projecting from the bottom surface 14a of the frame portion 14 at an interval from each other.
A groove 19M is formed between L and R. Both walls 19L,
19R is arranged on the frame 14 so that when the key unit is mounted on the frame portion 14, it is parallel to the longitudinal axis of the corresponding key. The guide part 20 and the guide part 21 are configured in the same manner as the guide part 19,
The groove 20M is formed by R, and the groove 2 is formed by both walls 21L and R.
1M are each formed. Each guide part 19, 20,
The height and the length in the front-back direction of each of the grooves 21M, 20M, and 21M and each of the guided parts 11, 12, 1
3 is set to such an extent that it can be engaged.

When assembling the key unit 1 to the frame portion 14, each of the grooves 19M, 20M, 21M
The key units 1, 12, and 13 of the keys 2, 3, and 4 are inserted into the key unit 1, and the key unit 1 is fixed to the frame unit 14 by the common support unit 8 using screws (not shown). In the assembled key unit 1, the key 2 attempts to expand to the left and the key 3 expands to the right due to the reaction force, so that the left side surface 11b of the guided portion 11 is the right side surface of the guide portion left wall portion 19L. The left end of the key 2 is regulated by abutting on the 19La in a surface contact state. This allows
The bending at the connecting portion vertical portion 5a of the key 2 is corrected in the correction direction F1. Similarly, the right side surface 13c of the guided portion 13 abuts on the left side surface 21Ra of the guide portion right side wall portion 21R in a surface contact state, and the right end position of the key 4 is regulated. As a result, the bending of the key 4 at the connecting portion vertical portion 7a is corrected in the correction direction F.
Corrected to 2. Therefore, as shown in FIG. 3, the expanded state of the gaps 9 and 10 is easily corrected, and the keys 2, 3,.
4 are parallel to each other.

In order to secure the above-mentioned surface contact state, each groove 19M, 20M, 2G in each guide 19, 20, 21
The positional relationship between 1M and each of the guided portions 11, 12, and 13 is as follows.
It is set as follows:

First, regarding the width in the key arrangement direction, the groove 19
Assuming that the width of M is “A” and the width of the guided portion 11 is “B”, the distance (clearance C) between the right side surface 11c of the guided portion 11 and the left side surface 19Ra of the guide portion right wall portion 19R is C = AB.

The distance (the amount of eccentricity D) between the center line of the groove 19M and the center line of the guided portion 11 is approximately half of the clearance C,
That is, D = (AB) / 2 is set. Thereby, the left side surface 11b of the guided portion 11 and the right side surface 19La of the guide left side wall portion 19L come into contact with each other in a surface contact state (sliding contact at the time of a normal key pressing operation), and an appropriate contact is made on the opposite contact surface side. A proper clearance C is secured.

The relationship between the groove 21M and the guided portion 13 is as follows.
The relationship between the groove portion 19M and the guided portion 11 is symmetric, but is set in the same manner. Accordingly, the right side surface 13c of the guided portion 13 and the left side surface 21Ra of the right side wall portion 21R of the guide portion are brought into contact with each other in a surface contact state (sliding contact at the time of normal key pressing operation), and an appropriate contact is made on the opposite contact surface side. Clearance C is secured.

Since the groove 20M and the guided portion 12 do not participate in the correction of the key unit 1, the relationship is different from the above case, and the center line of the groove 20M and the center line of the guided portion 12 are substantially coincident. I have. As a result, the guided portion 12 is always separated without contacting the guide portion 20, and an appropriate clearance (total C) is secured on both sides of the guided portion 12.

In this manner, the gaps 9 and 10 are corrected by one-sided contact between the guided portions 11 and 13 and the guide portions 19 and 21 by surface contact. This surface contact state is maintained even during a normal key pressing operation in which the keys 2, 3, and 4 swing vertically, and the guided portions 11 and 13 slide smoothly with respect to the guide portions 19 and 21.

Since the movement of the guided portions 11, 12, 13 in the key arrangement direction is restricted in each of the groove portions 19M, 20M, 21M, the keys 2, 3, 4 during the key pressing operation of a glissando or the like. Swinging in the arrangement direction is appropriately restricted (key guide function). Also, an appropriate gap between the keys can be secured, and the appearance can be improved.

According to the present embodiment, the key unit 1
The key 2 and the key 4 are bent obliquely right and left at the connecting portion vertical portions 5a and 7a, and the gap between the keys 2, 3, and 4 is increased toward the tip of the connecting portion. Since they are integrally formed, it is possible to prevent the thickness of the rib portion of the mold member corresponding to each of the gaps 9 and 10 from becoming extremely thin.
Therefore, the design and manufacture of the mold member can be facilitated, and the strength and life can be improved.

In addition, the expanded state of the key unit 1 can be easily corrected by deforming the connecting portion vertical portions 5a and 7a having a small mass and a small restoring force. Sometimes the guided parts 11, 12, 1
The keys 2, 3, 4 can be made parallel to each other simply by inserting the key 3 into each of the guides 19, 20, 21, without complicating the process and not affecting the product quality.

Since the positional relationship between the grooves 19M, 20M, 21M and the guided parts 11, 12, 13 is appropriately set as described above, the guided parts 11, 13, and the guide parts 19, 21 And the appropriate clearance C is always ensured. Therefore, mechanical noise at the time of a key pressing operation can be prevented.

Further, since the guide portion 19 and the guided portion 11 which are usually provided for the key guide function also have a function of correcting the expanded state of the key unit 1,
The configuration is simple.

In the present embodiment, the guided portion 1
1 and 13 and the guide portions 19 and 21 are in contact with each other in a surface contact state /
Although the sliding contact is performed, a protrusion may be provided on any of the guided portions 11 and 13 and the guiding portions 19 and 21 so that the contacting / sliding contact is performed in a point contact state with each other.

The number of keys in the key unit 1 is not limited to three keys as in the above embodiment, but may be, for example, an octave (C
Key to B key). In this case, the relationship between the guide portion and the guided portion is set, for example, for the C, D, and E keys in the same manner as in the case of the key 2 in each of the above embodiments (the left side surface of the guided portion is the guide portion left wall portion). To be in contact with the right side of the
For the G, A, and B keys, the key 4 in the above embodiment is used.
(Set so that the right side surface of the guided portion abuts the left side surface of the right wall portion of the guide portion in a surface contact state)
The F key at the center of the unit may be set in the same manner as the key 3 in the above-described embodiment (set so that the guided portion is always separated without contacting the guide portion).

(Second Embodiment) Next, a second embodiment of the present invention will be described.
The embodiment will be described with reference to FIGS. 8 and 9 show a state where the key unit 1 of the keyboard device according to the present embodiment is assembled. FIG. 10 shows the key and the guide section in an enlarged manner. 8 is a plan view of the keyboard device as viewed from above, FIG. 9 is a cross-sectional view taken along line BB of FIG. 8, and FIG. 10 is an enlarged cross-sectional view taken along line AA of FIG. In these drawings, components corresponding to elements and portions in the above-described first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

According to the second embodiment, the size of the guide portions 19, 20, 21 in the key longitudinal direction is different from that of the first embodiment, for example, like the guide portion 20 shown in FIG. The guide portions 19, 20, and 21 and the guided portions 11, 20 are set larger than those in the first embodiment.
10 and FIG.
As shown in the figure, left and right wall portions 19L, 19R; 20L, 20R;
The intervals between the 1Rs, that is, the widths of the grooves 19M, 20M, 21M are reduced, so that each of the guided portions 11, 12, 13 has its left and right side surfaces 11b, 11c; 12b, 12c;
The groove portions 19M, b are held in a state (surface contact state) where b, 13c are sandwiched between the left and right walls of the corresponding guide portions 19, 20, 21.
The difference is that they are inserted into 20M and 21M. Thus, the guide portions 19, 20, 21 and the guided portions 11, 1
2 and 13 are formed and engaged, so that a pair of wall portions 19L, 19R; 20L, 20R;
1R is the guided portion 1 from both sides in the width direction of the keys 2, 3, and 4.
Left, right and left side surfaces 11b, 11c of 1, 12, 13;
12c; 13b, 13c are surface-contacted over a wide area to restrict the movement of the key, so that rolling around the longitudinal axis of the key can be prevented. That is, a stable key press / release operation can be performed. It should be noted that the left and right side surfaces 11b, 11c; 12b, 12c; 13b, 13c of the guided portions 11, 12, 13 and the right and left walls of the guide portions 19, 20, 21 are smooth when a key is pressed and released. It is set so that a slight clearance (not shown) exists in order to enable a smooth sliding.

In this way, the gaps 9 and 10 are corrected by the two-sided contact between the guided parts 11 and 13 and the guide parts 19 and 21. This surface contact state is maintained even during a normal key pressing operation in which the keys 2, 3, and 4 swing vertically, and the guided portions 11 and 13 slide smoothly with respect to the guide portions 19 and 21.

This smooth sliding is more reliably realized for the following reasons. That is, referring to FIG. 10, the guided end portions 11s, 12s, and 13s are:
In the key depressing and releasing direction, it is formed at a position far from the connection portions 5, 6, 7 and far from the tops of the guide portions 19, 20, 21. The connection portion, the top of the guide portion, and the tip of the guided portion. The parts are arranged in the order of the parts, thereby forming a structure in which rolling R is hardly generated when viewed around the axis in the key longitudinal direction. This will be described focusing on only the right key portion in FIG. At the connecting portion 7 (see FIGS. 1 and 3), the urging force Fr is always generated in the direction of the arrow, so that the top 21
Rotational moment M clockwise around end 21TP of T
Is balanced by pushing the wall side surface 21La with the guided portion tip portion 13s so as to regulate this (it can be considered that an anti-rotation moment M is generated and balanced). ).

Therefore, it is better to provide a portion for canceling the force Fr at a position as far as possible from the position where the force Fr is generated, as viewed from the end 21TP. In this sense, the tip portion 13s acts as this portion. When this is viewed from the viewpoint of the connection portion 7 from a different point of view, it can be seen that rolling caused by the force Fr is less likely to occur at the time of key swing. If the keyboard has a keyboard structure in which rolling does not easily occur around the axis of the connecting portion 7, a smooth key swing can be realized when a key is pressed and released.

[0061]

As described above, according to the first aspect of the present invention,
According to the keyboard device of the above, it is possible to facilitate the design and manufacture of the mold member and to improve the strength and the life without complicating the process and deteriorating the product quality.

According to the keyboard device of the second aspect, the guide means and the guided means are always in contact with each other, so that an appropriate gap between the keys can be secured.

According to the keyboard device of the third aspect, the configuration can be simplified.

According to the keyboard device of the fourth aspect, it is possible to secure an appropriate gap between each key and prevent mechanical noise at the time of a key pressing operation.

According to the keyboard device of the sixth aspect, the keys can be easily made parallel to each other, and a feeling of rubbing does not occur.

According to the keyboard device of the eighth aspect, the cost of the mold can be reduced, and the manufacturing cost of the keyboard itself can be reduced.

According to the keyboard device of the ninth aspect, the configuration is compact, and the keyboard can be manufactured with a smaller number of parts. Further, manufacturing costs can be reduced.

According to the keyboard device of the tenth aspect, rolling of the key around the longitudinal axis can be prevented. That is, a stable key press / release operation can be performed.

[Brief description of the drawings]

FIG. 1 is a plan view of a key unit in a keyboard device according to a first embodiment of the present invention as viewed from above.

FIG. 2 is a perspective view of the key unit in the keyboard device according to the embodiment as viewed from the front right lower side.

FIG. 3 is a partial view showing a state where a key unit of the keyboard device according to the embodiment is assembled, and is a plan view of the keyboard device as viewed from above.

FIG. 4 is a sectional view taken along the line AA.

FIG. 5 is a cross-sectional view along the line BB.

FIG. 6 is a perspective view of the guide section.

FIG. 7 is an enlarged view of FIG. 4 showing a key and a guide portion of the keyboard device according to the same embodiment.

FIG. 8 is a view similar to FIG. 3, showing a key unit of a keyboard device according to a second embodiment of the present invention.

FIG. 9 is a cross-sectional view along the line BB.

FIG. 10 is a view similar to FIG. 7, showing a key and a guide portion of the keyboard device according to the same embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Key unit 2 Key 5 Connecting part 5a Connecting part vertical part 5b Connecting part horizontal part 8 Common support part 9 Gap 11 Guided part 11A Small projection part 11a Locking surface 11b Left side surface 11c Right side surface 14 Frame part 19 Guide part 19L Left side Wall 19R Right side wall 19La Right side 19Ra Left side

Claims (10)

[Claims] 1. A plurality of keys having a distal end portion and a base end portion, a common support portion for supporting the keys, and a key provided at a base end portion of each key and connecting the key and the common support portion to each other. A connection portion, wherein the plurality of keys are connected to the common support portion via the connection portion so as to be swingable in the key pressing direction and the key arrangement direction with respect to the common support portion, and At least one key unit integrally formed with the connecting portion and the common supporting portion by expanding a gap between each other toward the portion, a frame member on which the key unit is mounted, the key and the key A keyboard device provided on a frame member, comprising: engagement means for causing the plurality of keys to be parallel to each other by deforming the connection portion to engage the key unit with the frame member. 2. The locking device according to claim 1, wherein the engaging unit includes a guiding unit provided on the frame member, and a guided unit provided on each key and engaged with a corresponding one of the guiding units. 2. The keyboard device according to claim 1, wherein the guide members are made parallel to each other by engagement of the guide member and the guided member. 3. The device according to claim 2, wherein the guide means is configured to restrict swinging of the plurality of keys in a key arrangement direction when the key is pressed through the guided means. Keyboard device. 4. The keyboard device according to claim 2, wherein said guide means and said guided means are capable of abutting on each other in a surface contact state such that said plurality of keys are parallel to each other. . 5. The guide means is provided on the frame member so as to correspond to each of the keys. When the key unit is mounted on the frame member, the guide means extends parallel to the longitudinal axis of the key, and The guided means is a projection provided on each of the keys and having both side surfaces extending parallel to the longitudinal axis of the keys, the walls being formed by a pair of walls defining a groove therebetween. The keyboard device according to any one of claims 2 to 4, further comprising a protrusion inserted into a groove between the pair of wall portions of a corresponding one of the guide means. 6. The key unit according to claim 1, wherein the connection portion of the key unit is bent in a key arrangement direction such that a gap between the keys is increased as the plurality of keys reach a tip end.
The keyboard device according to any one of claims 1 to 5. 7. The connecting portion is located on the common support portion side, a vertical portion capable of swinging a corresponding one of the keys so as to be swingable in a key arrangement direction, and being located on the key side, The keyboard device according to any one of claims 1 to 6, comprising a horizontal portion capable of bending the corresponding key so as to be swingable in a key pressing direction. 8. Each of the keys has a side surface, the guided means is a first projection provided on each key and engageable with a corresponding one of the guide means, and the first projection. And a second protrusion protruding outward from a side surface of the key in the key arrangement direction from the portion.
Keyboard device according to item. And a stopper provided on the frame member side, wherein the second protrusion contacts the stopper when each of the keys is not pressed, and is in an extreme position when each of the keys is not pressed. 9. The keyboard device according to claim 8, further comprising a locking surface for restricting the pressure. 10. The guide means is provided on the frame member so as to correspond to each of the keys. When the key unit is mounted on the frame member, the guide means extends parallel to the longitudinal axis of the key, and 1 to define grooves at intervals
A pair of wall portions, wherein the guided means is a projection provided on each of the keys and having both side surfaces extending in parallel to a longitudinal axis of the keys, and a pair of the projections corresponding to the guide means. The keyboard according to any one of claims 2 to 4, wherein the both side surfaces are formed of protrusions inserted into the groove between the wall portions by being sandwiched between the pair of wall portions of the guide means. apparatus.