Function expansion device, electronic device, and electronic musical instrument

Abstract

To provide a function extension device, electronic apparatus, and an electronic musical instrument that can easily be seen from a distance whether a function unit is connected or not.SOLUTION: Function units 60A-60C comprise: a connecting member 68 having a first facing portion 68a, a second facing portion 68b hanging down substantially vertically from one end of the first facing portion 68a, and a USB terminal 69 extending from the second facing portion 68b that is parallel to the first facing portion 68a; a top facing portion 62 and rear facing portion 64 electrically connected with the connecting member 68, and there is a gap between the USB terminal 69 and the first facing portion 68a.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a function expansion device, an electronic device, and an electronic musical instrument. [Background technology]

[0002] In electronic devices such as electronic musical instruments, various function expansion devices are sometimes connected as functional units. For example, Patent Document 1 discloses an information device to which a function expansion device is connected. In this information device, a USB male connector provided on the function expansion device is USB-connected to any one of a plurality of USB female connectors provided on the information device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-81387 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the information device disclosed in the above Patent Document 1, the function expansion device is connected to the information device in a form in which a part of the housing of the function expansion device is extended to the bottom side of the information device, and therefore the extended part of the housing cannot be confirmed from the top side of the information device, and it is not easy to visually confirm from a distance whether the function expansion device is connected to the information device or not.

[0005] An object of the present invention is to provide a function expansion device, an electronic device, and an electronic musical instrument that allow easy visual confirmation from a distance as to whether or not a functional unit is connected. [Means for solving the problem]

[0006] The present invention Function expansion device teeth, A function expansion device connected to an electronic device main body, the function expansion device comprising: a connection member having a top surface member, a side surface member hanging down approximately vertically from one end of the top surface member, and a terminal extending from the side surface member and approximately parallel to the top surface member; and a function expansion device main body electrically connected to the connection member, the function expansion device having a gap between the terminal and the top surface member, the terminal being inserted into the side surface of the electronic device main body and the gap being filled, the top surface member being visibly arranged on the top surface of the electronic device main body. will be done. Effect of the Invention

[0007] According to the present invention, it is possible to provide a function expansion device, an electronic device, and an electronic musical instrument that allow easy visual confirmation from a distance as to whether or not a functional unit is connected. [Brief description of the drawings]

[0008] [Figure 1] 1 is an overall perspective view of a keyboard instrument according to an embodiment, as viewed from above; [Diagram 2] 1 is an overall perspective view of a keyboard instrument according to an embodiment, as viewed from below; [Diagram 3] 1 is an exploded perspective view of a keyboard instrument according to an embodiment; [Figure 4] FIG. 2 is a plan view of the keyboard instrument according to the embodiment with each functional unit removed. [Diagram 5] 1 is a perspective view of a keyboard instrument according to an embodiment with each functional unit removed, as viewed from the rear side; [Figure 6] 1 is a perspective view of a functional unit of a keyboard instrument according to an embodiment, seen from the upper right side. FIG. [Figure 7] 1 is a perspective view of a functional unit of a keyboard instrument according to an embodiment, seen from the lower left side. FIG. [Figure 8] 2 is a perspective view of the fixing member of the keyboard instrument according to the embodiment, seen from the lower right side. FIG. [Figure 9] FIG. 2 is a longitudinal cross-sectional view of the keyboard instrument according to the embodiment, taken along the line IX-IX in FIG. [Figure 10] 2 is a longitudinal cross-sectional view of a portion of the keyboard instrument according to the embodiment, taken along the line XX in FIG. 1. [Figure 11] 1 is a perspective view of a part of a keyboard instrument according to an embodiment of the present invention with a fixing member attached thereto, as viewed from the rear right side. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] An embodiment of the present invention will be described with reference to the drawings. The keyboard instrument 10 shown in Fig. 1 and Fig. 2 is an electronic instrument (electronic device), and includes an instrument body (electronic device body) 50 composed of a keyboard member (performance operator) 20 provided with a keyboard 14 having a plurality of white keys and a plurality of black keys, a plate-shaped member 30, four function units (function expansion devices) 60A to 60C, and four fixing members 80 for fixing each of the function units 60A to 60C to the plate-shaped member 30. The keyboard member 20 has an upper case 22 including the keyboard 14, and a lower case 24, and is provided in such a way that a part of the plate-shaped member 30 is sandwiched between the upper case 22 and the lower case 24. Here, when the plate-shaped member 30 is sandwiched between the upper case 22 and the lower case 24, a part of the upper surface and the side surface of the plate-shaped member 30 are exposed. Each functional unit 60A-60C is set at a position on the plate-like member 30 that does not overlap with the keyboard member 20, in other words, at a position that does not overlap with the upper case 22 and the lower case 24, so as to be freely fixed and removable without misalignment with the exposed part of the upper surface and side of the plate-like member 30.

[0010] Note that coordinate axes are shown in each figure, and in the following, the X-axis direction in each figure will be described as the left-right direction of keyboard instrument 10 (the direction in which the keys are arranged on keyboard 14) (the positive X-axis direction is taken as the leftward direction), the Y-axis direction in each figure will be described as the front-back direction of keyboard instrument 10 (the direction in which the keys on keyboard 14 extend) (the positive Y-axis direction is taken as the forward direction), and the Z-axis direction in each figure will be described as the up-down direction of keyboard instrument 10 (the positive Z-axis direction is taken as the upward direction).

[0011] As shown in FIG. 1 and FIG. 3, the upper case 22 is a horizontally long rectangular thick plate member with the left-right direction as the longitudinal direction, is made of synthetic resin, and has the keyboard 14 at its front part. The upper case 22 has upper case screw holes 22a at the four corners for screwing the upper case 22 to the plate-like member 30. Each upper case screw hole 22a is countersunk around the periphery so that the head of the upper screw S1 can be accommodated. The upper surface 22U of the upper case 22 has a diagonal concave-convex pattern. A plurality of operation buttons 22b are provided along the concave portions of the concave-convex pattern on the rear side of the keyboard 14 on the upper surface 22U of the upper case 22. Various functions for operating the keyboard instrument 10, such as turning on and off the power of the keyboard instrument 10 and selecting the tone color output from the keyboard instrument 10, are assigned to each operation button 23. In addition, a speaker 22c for emitting sounds from the keyboard instrument 10 is provided on the left side of the keyboard 14 on the upper surface 22U of the upper case 22.

[0012] As shown in Figs. 2 and 3, the lower case 24 is a shallow rectangular dish-shaped member with the left-right direction as the longitudinal direction, and is made of synthetic resin. The size of the lower case 24 in the planar direction is approximately equal to that of the upper case 22. The lower case 24 has lower case screw holes 24a at its four corners for screwing the lower case 24 to the plate-shaped member 30. The periphery of each lower case screw hole 24a is countersunk to accommodate the head of the lower screw S2. The lower surface of the lower case 24 has a diagonal uneven pattern as seen from below, similar to the upper case 22. A rubber band 25 for holding the keyboard instrument 10 with one hand is provided in a freely stretchable recessed portion provided in the center of the lower surface of the lower case 24. In addition, a control circuit board 26 for driving and controlling the keyboard instrument 10 and a battery case 27 for storing a battery as a power source are provided inside the lower case 24.

[0013] The plate-shaped member 30 is a horizontally elongated rectangular shape with the left-right direction as the longitudinal direction, and is made of a wooden plate or a plate with a wood-grain sticker attached to the surface. The plate-shaped member 30 has a left-right dimension that is approximately equal to the left-right dimension of the keyboard member 20 so that when the plate-shaped member 30 is sandwiched between the upper case 22 and the lower case 24 and assembled, each of the left-right end faces of the plate-shaped member 30 slightly protrudes in the left-right direction from each of the left-right end faces of the upper case 22 and the lower case 24. The plate-shaped member 30 has a front-rear dimension that is larger than the front-rear dimension of the keyboard member 20 so that when the plate-shaped member 30 is sandwiched between the upper case 22 and the lower case 24 and assembled, each of the front end faces of the plate-shaped member 30 slightly protrudes in the front direction from each of the front end faces of the upper case 22 and the lower case 24, and each of the rear end faces sufficiently protrudes in the rear direction from each of the rear end faces of the upper case 22 and the lower case 24. The thickness of the plate-shaped member 30 is approximately equal to the combined thickness of the upper case 22 and the lower case 24 of the keyboard member 20. The plate-like member 30 is made by stacking five thin plates, which are separable from each other and have substantially the same shape and size, in the vertical direction. The plate-like member 30 may be made of one thick plate.

[0014] 3, a large portion of the front side of the plate-like member 30 is provided with an opening 31 that is a horizontally elongated rectangle with the longitudinal direction being the left-right direction and that penetrates in the vertical direction. The opening 31 is slightly smaller than the upper case 22 and the lower case 24, and accommodates a rib (not shown) and the like provided on the lower surface of the upper case 22. Insertion holes (not shown) are provided in the areas around the opening 31 at positions that overlap with the upper case screw holes 22a and the lower case screw holes 24a in the vertical direction, and cylindrical members 90 are inserted into these insertion holes.

[0015] The upper case 22 and the lower case 24 are overlapped in a manner that sandwiches the periphery of the opening 31 of the plate-like member 30, and a female upper screw S1 is inserted from above each upper case screw hole 22a, and a male lower screw S2 is inserted from above each lower case screw hole 24a, and the upper screw S1 and the lower screw S2 are screwed together and connected inside each cylindrical member 90. As a result, the plate-like member 30 is connected integrally with the keyboard member 20 with a portion of the plate-like member 30 overlapping with the keyboard member 20.

[0016] At the rear side of the plate-shaped member 30, i.e., at the approximately center in the left-right direction of the portion not overlapping with the keyboard member 20, a grip hole 32 is provided that is a horizontally elongated rectangle with the left-right direction as the longitudinal direction and penetrates the plate-shaped member 30 in the up-down direction. The grip hole 32 is provided with a size that allows a person's hand to enter, so that the keyboard instrument 10 can be grasped and carried by inserting the hand into the grip hole 32. As shown in FIG. 4, when the keyboard instrument 10 is viewed from above, the left and right sides of the grip hole 32 of the plate-shaped member 30 exposed from the upper case 22 of the keyboard member 20 form an engagement area A1 in which a plurality of functional units 60A to 60C are engaged and fixed. In the engagement area A1, a plurality of small-diameter through holes 34 that penetrate the plate-shaped member 30 are provided in a matrix shape at a predetermined interval. Specifically, a total of 32 through holes 34 are provided on the left and right sides of the grip hole 32, with two rows in the front-rear direction and eight columns in the left-right direction (i.e., a total of 16 on one side).

[0017] 5 and 11, the rear surface 22B of the side end surface of the upper case 22 of the keyboard member 20 is provided with four horizontally elongated rectangular terminal insertion holes (connection openings) 22H into which the USB (Universal Serial Bus) terminals 69 of each of the functional units 60A to 60C described later are inserted. The four terminal insertion holes 22H are provided close to each other, two on each of the left and right sides of the grip hole 32. Each terminal insertion hole 22H is provided so as to open to the rear side, that is, the engagement area A1 side with which each of the functional units 60A to 60C is engaged. A connection terminal (not shown) is provided inside each terminal insertion hole 22H and electrically connected to the USB terminal 69 of each of the functional units 60A to 60C.

[0018] Next, the configuration of the four functional units 60A to 60C fixed to the plate-like member 30 will be described. In this embodiment, two of the four functional units 60A to 60C are the first functional unit 60A having the same function, and the other two are the second functional unit 60B and the third functional unit 60C having different functions. The first functional unit 60A is a percussion unit having a function as a percussion instrument. The second functional unit 60B is a music-containing unit having a function of storing a plurality of music pieces and being able to reproduce any of the musical tones by the keyboard instrument 10. The third functional unit 60C is a selection unit provided with an operator having a function of selecting and operating any of the plurality of music pieces stored in the second functional unit 60B.

[0019] First, a structure common to each of the functional units 60A to 60C will be described. As shown in Fig. 6 and Fig. 7, each of the functional units 60A to 60C has a predetermined thickness and is bent so that its external shape when viewed from one direction is approximately L-shaped. In each of the functional units 60A to 60C, the portion constituting the long side of the approximately L-shape is an upper surface facing portion (function expansion device main body) 62 facing the upper surface (plate surface) 30U of the plate-shaped member 30, and the portion constituting the short side of the approximately L-shape is a rear surface facing portion (function expansion device main body) 64 facing the rear surface (side end surface) 30B of the plate-shaped member 30. The upper surface facing portion 62 and the rear surface facing portion 64 are connected to each other at an angle of approximately 90°.

[0020] As shown in Fig. 9, the lower surface of the upper surface facing portion 62 of each of the functional units 60A to 60C is a substantially flat surface, and when each of the functional units 60A to 60C is electrically and physically attached to the musical instrument body 50, the lower surface of the upper surface facing portion 62 is in contact with the upper surface 30U of the plate-shaped member 30 when the functional units 60A to 60C are fixed to the plate-shaped member 30. The front surface of the rear surface facing portion 64 is also a flat surface, and the front surface of the rear surface facing portion 64 is in contact with the rear surface 30B of the plate-shaped member 30 when the functional units 60A to 60C are fixed to the plate-shaped member 30. The front end of the upper surface facing portion 62 and the lower end of the rear surface facing portion 64 are each round-chamfered to form a curved surface. The boundary portion 63 between the upper surface facing portion 62 and the rear surface facing portion 64 (a portion constituting a substantially L-shaped bent portion) is also round-chamfered.

[0021] The engaged area A2 is provided at the approximate center of the lower surface of the upper surface facing portion 62, which is engaged with an arbitrary position in the engagement area A1 of the plate-like member 30. The engaged area A2 is provided with four concave recesses 66 opening downward in a matrix (two rows in the front-rear direction and two columns in the left-right direction). The intervals between the recesses 66 are approximately equal to the intervals between the through holes 34 provided in the engagement area A1. The positions of the recesses 66 in the front-rear direction are provided so as to approximately coincide with the positions of the through holes 34 in the front-rear direction when the front surface of the rear surface facing portion 64 is in contact with the rear surface 30B of the plate-like member 30. Therefore, by moving each of the functional units 60A to 60C in the left-right direction while the front surface of the rear surface facing portion 64 is in contact with the rear surface 30B of the plate-like member 30, the four recesses 66 of each of the functional units 60A to 60C can be vertically overlapped with any four through holes 34 in the engagement area A1.

[0022] As shown in Fig. 10, the opening diameter of each recess 66 is slightly larger than the outer diameter of a through shaft 84 of the fixing member 80 described later, so that the tip side of the through shaft 84 can fit in it. A washer member 66W into which the tip side of the through shaft 84 of the fixing member 80 is fitted is provided in each recess 66 of the engaged area A2. The opening end of each recess 66 is C-chamfered to provide an opening end inclined surface 66a by the C-chamfering (see Fig. 7). Furthermore, a substantially plate-shaped magnetic body 62M is embedded in the bottom side of the recess 66 in the upper surface opposing portion 62.

[0023] A cable 67 electrically connected to the upper surface facing portion 62 extends at a predetermined length from the approximately center in the left-right direction of the front end portion of the upper surface facing portion 62 (the portion where the engaged area A2 is provided). The cable 67 may be provided to be retractable and retractable in the upper surface facing portion 62. A connection member 68 connected to the upper case 22 of the keyboard member 20 is provided at the tip side of the cable 67. The connection member 68 has an approximately L-shaped appearance and has a first facing portion (upper surface member) 68a that faces the upper surface (plate surface) 22U of the upper case 22 when connected to the upper case 22, and a second facing portion (side surface member) 68b that hangs down approximately vertically from one end of the first facing portion 68a and faces the rear surface (side end surface) 22B of the upper case 22 when connected to the upper case 22. The first facing portion 68a and the second facing portion 68b are connected to each other at an angle of approximately 90°. The front end of the first opposed portion 68a, the lower end of the second opposed portion 68b, and the boundary between the first opposed portion 68a and the second opposed portion 68b are all round chamfered.

[0024] A USB terminal (connection terminal) 69 is provided on the inner surface side of the second opposing portion 68b of the connection member 68 to be inserted into the terminal insertion hole 22H of the upper case 22. The USB terminal 69 is provided in a rectangular tube shape extending forward from the inner surface of the second opposing portion 68b. The USB terminal 69 is provided approximately parallel to the first opposing portion 68a. A gap is provided between the USB terminal 69 and the first opposing portion 68a. By inserting the USB terminal 69 of each of the functional units 60A to 60C into the terminal insertion hole 22H of the upper case 22, each of the functional units 60A to 60C is electrically connected to the keyboard member 20, and the function of each of the connected functional units 60A to 60C is enabled in the keyboard instrument 10.

[0025] The first opposing portion 68a is provided with a size larger than the USB terminal 69 at least in the left-right direction. That is, the first opposing portion 68a is provided with a size that covers the upper surface side (one side) of the USB terminal 69 when the connection member 68 is viewed from above. As shown in FIG. 10, the lower surface of the first opposing portion 68a is a flat surface, and contacts the convex portion of the uneven groove provided on the upper surface 22U of the upper case 22 when the USB terminal 69 is inserted into the terminal insertion hole 22H. In other words, the first opposing portion 68a is provided along the upper surface 22U of the upper case 22. Therefore, the area of ​​the upper surface 22U of the upper case 22 that contacts the lower surface of the first opposing portion 68a is smaller than the area of ​​the lower surface of the first opposing portion 68a, so that the contact resistance when the USB terminal 69 is inserted into the terminal insertion hole 22H can be reduced compared to the case where the area of ​​the upper surface 22U is the same as the area of ​​the lower surface of the first opposing portion 68a. The front surface of the second opposing portion 68b is also flat and comes into contact with the rear surface 22B of the upper case 22 when the USB terminal 69 is inserted into the terminal insertion hole 22H.

[0026] 1, different notations are engraved on the upper surface of the first opposing portion 68a of the connection member 68 according to the functions of the functional units 60A to 60C. In this embodiment, the notation M1 "A" is engraved on the first opposing portion 68a of the connection member 68 of the first functional unit 60A, the notation M2 "B" is engraved on the first opposing portion 68a of the connection member 68 of the second functional unit 60B, and the notation M3 "C" is engraved on the first opposing portion 68a of the connection member 68 of the third functional unit 60C. Note that the notations engraved on the upper surface of the first opposing portion 68a are not limited to alphabets, and may be numbers or other symbols.

[0027] By having such notations M1 to M3 engraved on the first opposing portion 68a, for example, if it is desired to place two first functional units 60A on the left side of the gripping hole 32 in the engagement area A1, and a second functional unit 60B and a third functional unit 60C on the right side of the gripping hole 32 in order from left to right, as shown in Figure 1, the desired arrangement of the functional units 60A to 60C can be easily communicated to the worker by instructing the worker to arrange them as "A," "A," "B," and "C" in order from left to right.

[0028] Next, the unique structure of each of the functional units 60A to 60C will be described. As shown in Fig. 6 and Fig. 7, in the first functional unit 60A, the front surface of the upper surface facing portion 62, the upper surface of the upper surface facing portion 62, and the rear surface of the rear surface facing portion 64 are covered by a cover-shaped striking surface cover 60A1. The striking surface cover 60A1 is provided so as to be vibrable, and when the first functional unit 60A is electrically connected to the keyboard member 20, the control circuit board 26 detects the vibration and pressure change of the striking surface cover 60A1 when the player of the keyboard instrument 10 strikes the striking surface cover 60A1 with a hand or the like, and an electronic sound with a tone color as a percussion instrument is output from the speaker 22c.

[0029] A dividing line L1 is provided on the surface of the striking surface cover 60A1 toward the rear side, dividing the striking surface cover 60A1 into two regions. The region of the striking surface cover 60A1 in front of the dividing line L1 is a first sound emission region 60A11, and the region of the striking surface cover 60A1 behind the dividing line L1 is a second sound emission region 60A12. The first sound emission region 60A11 and the second sound emission region 60A12 emit different electronic sounds of percussion tones when a player strikes the striking surface cover 60A1. Specifically, for example, when a player strikes the first sound emission region 60A11, a percussion tone is output as an electronic sound with reverberation, and when a player strikes the second sound emission region 60A12, a percussion tone is output as an electronic sound with no reverberation.

[0030] As shown in FIG. 1, the surface of the second functional unit 60B is provided with a liquid crystal display screen 60B1 on which the title of a piece of music is displayed, and a plurality of operation buttons 60B2 for playing the piece of music, etc. A plurality of pieces of music are built into the second functional unit 60B. When the second functional unit 60B is electrically connected to the keyboard member 20, the player operates the operation buttons 60B2 while watching the information displayed on the liquid crystal display screen 60B1, and the piece of music selected by the player is output from the speaker 22c, so that the player can enjoy the musical sound. In addition, a numeric keypad 60C1 is provided on the surface of the third functional unit 60C. When the third functional unit 60C is electrically connected to the keyboard member 20, the player can select a piece of music built into the second functional unit 60B by operating the numeric keypad 60C1.

[0031] Next, the configuration of the fixing member 80 for fixing each of the functional units 60A to 60C to the plate-like member 30 will be described. As shown in FIG. 8, the fixing members 80 have the same structure regardless of the type of the corresponding functional units 60A to 60C, and have an abutment portion 82 that abuts against the engagement area A1 of the plate-like member 30, and four through shafts 84 extending from the abutment portion 82. The abutment portion 82 is in the form of a thick plate, and is substantially square with four corners chamfered with R. The abutment portion 82 has an outer shape of an upper portion that is slightly smaller than that of a lower portion via a step 83. Each through shaft 84 is in the form of a cylinder (shaft) and extends vertically upward from the four corners of the upper surface 82U of the abutment portion 82.

[0032] The four through shafts 84 extending from the abutting portion 82 are arranged in a matrix (two rows in the front-rear direction and two columns in the left-right direction). The outer diameter of each through shaft 84 is sized so as to penetrate through the through holes 34 provided in the engagement region A1 of the plate-like member 30. The intervals between the through shafts 84 are substantially equal to the intervals between the through holes 34 provided in the engagement region A1. In other words, the through shafts 84 are provided at intervals corresponding to the depressions 66 provided in the engaged region A2 of each of the functional units 60A to 60C. For this reason, as shown in FIG. 11, each through shaft 84 is a set of four through holes 34 out of the 32 through holes 34 provided in the engagement region A1, and a quadrangle having these four through holes 34 as vertices can be passed through a set that has the smallest area among quadrangles having any four of the 32 through holes 34 as vertices. In other words, of the 16 through holes 34 arranged in eight columns vertically and two rows horizontally on each side of the gripping hole 32, the four through holes 34 applied to one functional unit are four through holes 34 in two rows and two columns adjacent to each other.

[0033] Each through shaft 84 is passed through the through hole 34 from the lower surface 30L side of the plate-shaped member 30. Each through shaft 84 is made to have a length that penetrates the through hole 34 and protrudes from the plate surface of the plate-shaped member 30. In detail, each through shaft 84 is made to have a length that penetrates the through hole 34 and protrudes from the upper surface 30U of the plate-shaped member 30 in a state where the abutting portion 82 is abutted against the lower surface 30L of the plate-shaped member 30, and the length of the protruding portion is equal to or less than the depth of the recess 66 provided in each functional unit 60A to 60C. The tip of each through shaft 84 is C-chamfered, and a tip inclined surface 84a is provided by the C-chamfering. Also, as shown in FIG. 10, a magnet 84M is embedded in the tip side of each through shaft 84 in a manner that is not exposed to the outside.

[0034] Next, a fixing method for fixing each of the functional units 60A to 60C by engaging them with the engagement area A1 of the plate-like member 30 will be described. Each of the functional units 60A to 60C can be fixed at any position in the engagement area A1. First, the USB terminal 69 of the connection member 68 of the functional units 60A to 60C to be engaged with the engagement area A1 is inserted into the terminal insertion hole 22H of the upper case 22 with the first opposing portion 68a facing the upper surface 22U of the upper case 22 to connect via USB. Which of the four terminal insertion holes 22H is to be inserted can be selected according to any position to fix the functional units 60A to 60 within the range that the cable 67 can reach.

[0035] Next, the upper surface facing parts 62 of the functional units 60A to 60C are placed with the recesses 66 facing downward at any position of the engagement area A1 of the upper surface 30U of the plate-like member 30 to which the functional units 60A to 60C are fixed. At this time, the functional units 60A to 60C are placed while roughly aligning the four recesses 66 of the functional units 60A to 60C to be placed and the four through holes 34 at the placement positions so that they overlap in the vertical direction. Note that by abutting the rear surface facing parts 64 of the functional units 60A to 60C against the rear surface 30B of the plate-like member 30, the positions of the recesses 66 and the through holes 34 in the front-rear direction can be easily aligned.

[0036] Next, the through shafts 84 of the fixing member 80 are press-fitted from the lower surface 30L of the plate-like member 30 into the four aligned through holes 34 of the functional units 60A-60C, and further, the through shafts 84 are inserted into the recesses 66 of the functional units 60A-60C so that the abutting portions 82 of the fixing member 80 abut against the lower surface 30L of the plate-like member 30. At this time, even if the above alignment is slightly misaligned, the through shafts 84 are guided into the recesses 66 by the opening end inclined surface 66a provided at the opening end of the recesses 66 and the tip inclined surface 84a provided at the tip of the through shafts 84, so that the through shafts 84 can be smoothly inserted into the recesses 66.

[0037] When each through shaft 84 is inserted into each recess 66 until the abutting portion 82 abuts against the plate-like member 30, the magnet 84M embedded in each through shaft 84 and the magnetic body 62M embedded in the functional units 60A to 60C are attracted to each other by magnetic force, and the functional units 60A to 60C and the fixing member 80 are fixed to the engagement area A1 by sandwiching the plate-like member 30. In addition, by inserting each through shaft 84 into each recess 66, the tip of each through shaft 84 is fitted into the washer member 66W in each recess 66, so that each through shaft 84 is difficult to come out of each recess 66. In this way, the functional units 60A to 60C can be easily fixed to the engagement area A1 of the plate-like member 30. In addition, when removing the functional units 60A to 60C from the engagement area A1, the functional units 60A to 60C can be easily removed by reversing the above procedure.

[0038] 11, before placing the functional units 60A-60C in the engagement area A1, the through shafts 84 of the fixing member 80 may be inserted into the through holes 34, and then the tips of the through shafts 84 may be inserted into the recesses 66 of the functional units 60A-60C. This procedure may also be used to fix the functional units 60A-60C to the engagement area A1. Also, the functional units 60A-60C may be temporarily removed while the connection members 68 of the functional units 60A-60C are connected to the USB, and the functional units 60A-60C may be shifted left and right to be re-engaged in a different position in the engagement area A1.

[0039] 9, in a state in which the functional units 60A-60C and the fixing member 80 are fixed to the engagement region A1 with the plate-like member 30 sandwiched therebetween, the lower surface of the contact portion 82 of the fixing member 80 (the plate surface opposite to the side where the through shaft 84 extends) and the lower surface of the lower case 24 are provided on the same plane (see dashed line L2). In other words, the contact portion 82 of the fixing member 80 has a thickness such that the lower surface thereof substantially coincides with the lower surface of the lower case 24 when the through shaft 84 is inserted through the through hole 34.

[0040] As described above, the functional units 60A to 60C of this embodiment comprise a connecting member 68 having a first opposing portion 68a, a second opposing portion 68b hanging down approximately vertically from one end of the first opposing portion 68a, and a USB terminal 69 extending from the second opposing portion 68b and approximately parallel to the first opposing portion 68a, as well as a top surface opposing portion 62 and a rear surface opposing portion 64 which are electrically connected to the connecting member 68, and there is a gap between the USB terminal 69 and the first opposing portion 68a.

[0041] According to the functional units 60A-60C of this embodiment, a gap is provided between the USB terminal 69 and the first facing portion 68a in the connection member 68 provided on the top surface facing portion 62 and the rear surface facing portion 64 of the functional units 60A-60C, so that the first facing portion 68a can be confirmed from the top surface side when the USB terminal 69 is connected to the connection object. This makes it possible to confirm that the functional units 60A-60C are connected to the connection object. Therefore, it is easy to visually confirm from a distance whether the functional units 60A-60C are connected to the connection object.

[0042] In addition, in the functional units 60A-60C of this embodiment, the first opposing portions 68a include notations M1-M3 of letters or symbols corresponding to the functions of the functional units 60A-60C. This allows the types of the functional units 60A-60C to be conveyed by the notations engraved on the first opposing portions 68a, making it possible to easily convey to an operator the arrangement of the multiple functional units 60A-60C to be connected to the connection targets. Therefore, when the functional units 60A-60C are used as educational toys, the arrangement of the functional units 60A-60C can be easily conveyed to children who have difficulty recognizing the functions of the functional units 60A-60C.

[0043] Moreover, the functional units 60A-60C of this embodiment include a cable 67 that connects the connection member 68 with the top surface facing portion 62 and the rear surface facing portion 64. As a result, even if the terminal insertion holes 22H are provided at predetermined positions of the keyboard member 20, the functional units 60A-60 can be fixed at any position in the engagement area A1 within the reach of the cable 67, thereby expanding the range of options for the positions at which the functional units 60A-60 are fixed.

[0044] The electronic device of this embodiment includes the above-mentioned functional units 60A to 60C, and a musical instrument body 50 having a side surface into which the USB terminal 69 is inserted and a first opposing portion 68a arranged on the upper surface so as to be visibly recognized when the gap is filled. With this configuration, an electronic device can be realized in which the first opposing portion 68a of the connection member 68 is arranged so as to be visibly recognized by inserting the USB terminal 69 into the side surface of the musical instrument body 50. Furthermore, when inserting the USB terminal 69 into the side surface of the musical instrument body 50, it is possible to prevent the USB terminal 69 from being inserted into the side surface of the musical instrument body 50 with the upside and downside facing in the wrong direction.

[0045] Moreover, the electronic device of this embodiment includes a fixing member 80 that fixes the functional units 60A-60C and the musical instrument body 50, and the musical instrument body 50 includes an engagement region A1 for detachably fixing the upper surface facing portion 62 and the rear surface facing portion 64 by the fixing member 80. This makes it possible to provide a specific electronic device for fixing the USB terminal 69 to the musical instrument body 50 while making the first facing portion 68a visible from above with the USB terminal 69 engaged with the engagement region A1.

[0046] Moreover, keyboard instrument 10 of the present embodiment includes functional units 60A-60C and instrument body 50 including keyboard members 20, with USB terminal 69 inserted into the side surface and first opposing portion 68a visibly arranged on the top surface with the gap filled. With this configuration, by inserting USB terminal 69 into the side surface of instrument body 50, it is possible to realize keyboard instrument 10 in which first opposing portion 68a of connection member 68 is visibly arranged.

[0047] Moreover, the keyboard instrument 10 of the present embodiment includes a fixing member 80 that fixes the functional units 60A-60C and the instrument body 50, and the instrument body 50 includes an engagement region A1 for detachably fixing the upper surface facing portion 62 and the rear surface facing portion 64 by the fixing member 80. This makes it possible to provide a specific keyboard instrument 10 for fixing the USB terminal 69 to the instrument body 50 while making the first facing portion 68a visible from above with the USB terminal 69 engaged with the engagement region A1.

[0048] Furthermore, in the keyboard instrument 10 of this embodiment, the first opposing portions 68a are provided along the plate surface of the keyboard member 20. As a result, with the connecting member 68 connected to the keyboard member 20, by hooking a finger or the like on the first opposing portion 68a and sliding the finger along the plate surface of the keyboard member 20 while pushing the first opposing portion 68a in a direction away from the terminal insertion hole 22H, the connecting member 68 can be easily pulled out from the keyboard member 20.

[0049] Furthermore, since the connecting member 68, which is substantially L-shaped, is easy for children to grasp and connect to the keyboard instrument 10, the keyboard instrument 10 according to this embodiment can be used as an educational toy for children by having a child carry out a series of steps of selecting one of the functional units 60A-60C from among the multiple functional units 60A-60C, connecting the connecting member 68 of the selected functional unit 60A-60C to the keyboard member 20, and engaging the engaged area A2 of the connected functional unit 60A-60C with the engaging area A1 of the plate-shaped member 30. Note that by connecting each of the functional units 60A-60C to the keyboard member 20 in this manner, cross-wiring can be prevented even when multiple keyboard instruments 10 are used by a large number of people at a school or the like.

[0050] Furthermore, in the keyboard instrument 10 of this embodiment, the second opposing portion 68b abuts against the rear surface 22B of the upper case 22 of the keyboard member 20 when the USB terminal 69 is inserted into the terminal insertion hole 22H. This makes it possible to confirm that the USB terminal 69 is securely inserted into the terminal insertion hole 22H. Furthermore, rattling of the USB terminal 69 inserted into the terminal insertion hole 22H can be prevented.

[0051] Furthermore, in the keyboard instrument 10 of this embodiment, a USB terminal 69 is provided as a connection terminal, and a terminal insertion hole 22H is provided as a connection opening into which the USB terminal is inserted for USB connection. This makes it possible to realize a specific configuration for connecting each of the functional units 60A to 60C to the keyboard instrument 10 via USB.

[0052] The above-described embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims.

[0053] The invention described in the first claim of this application is set forth below. [1] A connection member having a top surface member, a side surface member hanging down approximately perpendicularly from one end of the top surface member, and a terminal extending from the side surface member and approximately parallel to the top surface member; a function expansion device main body electrically connected to the connection member; Equipped with A function expansion device having a gap between the terminal and the upper surface member. [2] The upper surface member includes a character or symbol corresponding to the function of the function expansion device. The function expansion device according to [1] above. [3] The function expansion device described in [2] above, further comprising a cable connecting the connection member and the function expansion device main body. [4] A function expansion device according to any one of claims 1 to 3, and an electronic device main body having the terminal inserted into a side surface thereof and the top surface member arranged on an upper surface thereof so as to be visibly recognized when the gap is filled. electronic equipment. [5] a fixing member for fixing the function expansion device and the electronic device body, the electronic device body includes an engagement region for detachably fixing the function expansion device body by the fixing member, 2. The electronic device according to claim 1 , [6] A function expansion device according to any one of claims 1 to 3, an electronic musical instrument main body including a performance operator, into which the terminal is inserted and in which the upper surface member is visibly arranged on the upper surface when the gap is filled; Electronic musical instrument. [7] A fixing member for fixing the function expansion device and the electronic musical instrument body, the electronic musical instrument body includes an engagement area for detachably fixing the function expansion device body by the fixing member, 13. An electronic musical instrument according to claim 12. [Explanation of symbols]

[0054] 10 Keyboard Instruments 14 Keyboards 20 Keyboard parts 22 Upper case 22B Rear 22H Terminal insertion hole 22U Top 22a Upper case screw hole 22b Operation button 22c Speaker 23 Operation button 24 Lower case 24a Lower case screw hole 25 Band 26 Control circuit board 27 Battery case 30 Plate member 30B Rear side 30L bottom 30U top 31 Opening hole 32 Gripping hole 34 Through hole 50 Instrument body 60A First Function Unit 60A1 Playing Surface Cover 60A11 1st sound emission area 60A12 2nd sound emission area 60B Second functional unit 60B1 Liquid crystal display screen 60B2 Operation button 60C Third function unit 60C1 Numeric keypad 62 Top facing part 62M Magnetic material 64 Rear facing part 66 Recess 66W Washer part 66a Open end inclined surface 67 Cable 68 Connection member 68a First opposing portion 68b Second opposing part 69 USB terminal 80 Fixing member 82 Contact portion 82U Top 83 Step 84 Through shaft 84M Magnet 84a: inclined tip surface 90: cylindrical member A1 Engaged area A2 Engaged area L1 Lane line L2 Dashed line M1 notation M2 notation M3 notation S1 upper screw S2 Lower Screw

Claims

1. A function expansion device connected to an electronic device main body, a connection member including a top surface member, a side surface member hanging down substantially perpendicularly from one end of the top surface member, and a terminal extending from the side surface member and substantially parallel to the top surface member; a function expansion device main body electrically connected to the connection member; Equipped with a gap is provided between the terminal and the upper surface member; the terminal is inserted into the side surface of the electronic device body, and the top surface member is visibly disposed on the top surface of the electronic device body in a state where the gap is filled. Function expansion device.

2. The function expansion device according to claim 1 , wherein the upper surface member includes a marking including letters or symbols corresponding to the function of the function expansion device.

3. The function expansion device according to claim 2 , further comprising a cable connecting the connection member and the function expansion device main body.

4. A function expansion device according to any one of claims 1 to 3, The electronic device main body includes: electronic equipment.

5. a fixing member for fixing the function expansion device and the electronic device body, the electronic device body includes an engagement region for detachably fixing the function expansion device body by the fixing member, 5. The electronic device according to claim 4.

6. A function expansion device according to any one of claims 1 to 3, The electronic device body includes an electronic musical instrument body including a performance operator. Electronic musical instrument.

7. a fixing member for fixing the function expansion device and the electronic musical instrument body, the electronic musical instrument body includes an engagement area for detachably fixing the function expansion device body by the fixing member, 7. The electronic musical instrument according to claim 6.

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