A combined music box

Abstract

The present invention relates to a combined music box, comprising: a main music box and 1 to 9 auxiliary music boxes, wherein the main music box and the auxiliary music boxes together contain a bottom box, a first contact frame, a second contact frame, a first boss, a second boss, a first spring, a second spring, a first guide hole, a second guide hole, a connecting crossbar, a controller, a first support platform, a second support platform, a speaker, a cylinder and a liquid crystal screen, the main music box also contains a first resistor, a second resistor and a voltage collection point, the auxiliary music box also contains a first isolation sheet, a second isolation sheet, a first contact sheet, a second contact sheet and a series resistor, two pins of the first resistor of the main music box are respectively connected to a power supply and a second resistor, one pin of the second resistor is simultaneously connected to the first contact frame and the first resistor, and the other pin is simultaneously connected to the second contact frame and a power supply ground. Compared with the prior art, the present invention can realize the function of playing the first music in the independent working mode of the music box and playing the second music in the combined working mode.

Description

Technical Field

[0001] The invention relates to the field of music boxes, in particular to an electronic music box which can realize a second music playing function by being connected in series with metal rods. Background Art

[0002] The melodious music of music boxes often evokes people's memories of the good old days and leads people into the recollection of the past. The greatest charm of traditional music boxes that have swept the global market for more than 300 years is that they can solidify abstract music into concrete works of art, becoming a support for people to express their beautiful emotions. However, with the increase in gross national product and the growth of consumption capacity, traditional mechanical music boxes and single-function electronic music boxes can no longer meet the public's demand for music boxes.

[0003] Electronic music boxes need to have commemorative significance as gifts to reflect their value. A single music box cannot reflect the commemorative significance well. A combination similar to F4, or as a graduation commemorative gift for college roommates, requires people to hold a music box. A single music box can play songs independently and light up the LCD display. When everyone's music box is connected in series, special songs can be played to celebrate the team's return and reunion. In this way, the music box has more collection value and commemorative significance. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a music box which can be used alone, i.e., in an independent working mode, and can also play hidden music after being connected in series, i.e., in a combined working mode. The main music box will play the hidden second music only when a specified number of auxiliary music boxes are connected in series, otherwise the user can only operate the music box to play the first music, so as to make the music box more meaningful as a combined commemoration.

[0005] To achieve the above object, a combined music box of the present invention comprises: 1 main music box and 1 to 9 auxiliary music boxes, wherein:

[0006] The main music box and the auxiliary music box together contain a bottom box, a first contact frame, a second contact frame, a first boss, a second boss, a first spring, a second spring, a first guide hole, a second guide hole, a connecting crossbar, a controller, a first support platform, a second support platform, a speaker, a cylinder and a liquid crystal screen. The main music box also contains a first resistor, a second resistor and a voltage collection point. The auxiliary music box also contains a first isolation sheet, a second isolation sheet, a first contact sheet, a second contact sheet and a series resistor.

[0007] The first support platform and the second support platform are both fixed to the bottom of the bottom box, the first contact frame and the second contact frame are respectively fixed to the first support platform and the second support platform, the first boss and the second boss are both fixed to the inner side of the bottom box, the connecting cross bar is kept parallel to the bottom of the bottom box, passes through the middle winding coil of the first spring and the second spring, and the two ends are respectively fixed on the first boss and the second boss, the distance between the first spring and the second spring is equal to the distance between the first contact frame and the second contact frame, and they stretch by relying on their own tension, one end is pressed on the first contact frame and the second contact frame, and the other end is pressed on the inner side of the bottom box, the center distance between the first isolation plate and the second isolation plate is equal to the center distance between the first guide hole and the second guide hole,

[0008] The connecting crossbar is made of conductive material, and the first boss, the second boss, the first support platform and the second support platform are made of non-conductive material.

[0009] The two pins of the first resistor of the main music box are connected to the power supply and the second resistor respectively, one pin of the second resistor is connected to the first contact frame and the first resistor at the same time, and the other pin is connected to the second contact frame and the power supply ground at the same time, and the voltage collection point is located at the middle connection point of the first resistor and the second resistor.

[0010] The first contact frame and the first contact sheet, and the second contact frame and the second contact sheet are directly connected via metal wires, and the two pins of the series resistor are connected to the first contact sheet and the second contact sheet, respectively.

[0011] In the independent working mode, that is, when the auxiliary music box is not connected in series, the first spring and the second spring extend downward by their own tension and are in close contact with the first contact frame and the second contact frame respectively. In the combined working mode, that is, when the auxiliary music box is connected in series, the first isolation sheet and the second isolation sheet pass through the first guide hole and the second guide hole respectively, forcing the first spring and the second spring to break away from the contact with the first contact frame and the second contact frame, and at the same time connecting the first contact sheet and the second contact sheet to the first contact frame and the second contact frame.

[0012] The resistance values ​​of the first resistor, the second resistor and the series resistor are set to R1, R2 and R3 respectively, the power supply voltage is VCC, and the number of the sub-music boxes connected in series is set to N, where N is an integer and satisfies , the main music box detects the voltage at the voltage collection point in real time. When the voltage Vx at the voltage collection point satisfies

[0013] When the user presses the key, the main music box automatically plays the second music, otherwise according to the user's operation, the main music box plays the first music.

[0014] The beneficial effect of the present invention is that: the first spring and the second spring are provided so that the series resistor of the auxiliary music box connected in series at the end can form a closed loop, so that the series resistor is effectively connected to the voltage collection point of the main music box. When the auxiliary music box is connected in series, the voltage value at both ends of the second resistor of the main music box is changed due to the connection of the series resistor in the auxiliary music box, that is, the voltage at the voltage collection point is changed. When different numbers of auxiliary music boxes are connected in series, the voltage at the voltage collection point will also be different. By collecting the voltage value, the number of auxiliary music boxes connected in series can be determined, and the main music box decides whether to play the first music or the second music.

[0015] Based on the above technical solution, the present invention can also be improved as follows.

[0016] Furthermore, the first isolation sheet and the second isolation sheet are made of plastic material, the first spring and the second spring are made of metal material, and the surfaces thereof have good electrical conductivity.

[0017] The beneficial effect of adopting the above further solution is that the series resistor of the subsequent auxiliary music box can be normally connected to the voltage collection point of the main music box.

[0018] Furthermore, the first contact frame and the second contact frame are in the shape of oblique strips, and are inclined toward the bottom of the first guide hole and the bottom of the second guide hole respectively.

[0019] The beneficial effect of adopting the above further scheme is that the first spring and the second spring can keep one end of the spring in good contact with the contact frame by relying on their own tension, and after the spring has been used for a period of time, when the spring tension weakens, the spring and the contact frame can still maintain good contact, and when the first isolation sheet and the second isolation sheet are respectively inserted into the first guide hole and the second guide hole, the spring can automatically move upward to break the contact.

[0020] Furthermore, the structures of the first isolation sheet, the second isolation sheet, the first contact sheet and the second contact sheet are designed as follows: a cross-section of the first isolation sheet and the first contact sheet combined is smaller than the first guide hole, a cross-section of the second isolation sheet and the second contact sheet combined is smaller than the second guide hole, the first contact sheet and the second contact sheet are respectively at the lower end, the first isolation sheet and the second isolation sheet are respectively at the upper end, and the first contact sheet and the second contact sheet both pass through the side of the bottom box into the interior of the bottom box.

[0021] The beneficial effect of adopting the above further scheme is that when the first isolation sheet and the first contact sheet pass through the first guide hole at the same time, the first isolation sheet isolates the contact between the first spring and the first contact frame, and the first contact sheet contacts the first contact frame instead, so that one end of the series resistor in the auxiliary music box is connected to the voltage collection circuit; when the second isolation sheet and the second contact sheet pass through the second guide hole at the same time, the second isolation sheet isolates the contact between the second spring and the second contact frame, and the second contact sheet contacts the second contact frame instead, so that the other end of the series resistor in the auxiliary music box is connected to the voltage collection circuit; the first contact sheet and the second contact sheet both pass through the side of the bottom box, which can provide convenience for connecting the series resistor and the series wire.

[0022] Furthermore, the main music box and the auxiliary music box both include buttons, memory, power supply and sound playing module.

[0023] The beneficial effects of adopting the above further solution are: the button can allow the user to control the music box to play music, the memory can store songs, the power supply can power the music box, and the sound playing module can drive the speaker to play songs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the bottom structure of the auxiliary music box of the present invention;

[0025] Figure 2 It is a schematic diagram of the bottom structure of the main music box of the present invention;

[0026] Figure 3 This is a diagram showing the effect of the music box of the present invention after assembly;

[0027] Figure 4 This is a schematic diagram of connecting a series resistor to the auxiliary music box of the present invention;

[0028] Figure 5 It is a composition diagram of the main music box control system of the present invention;

[0029] Figure 6 It is a composition diagram of the auxiliary music box control system of the present invention;

[0030] Figure 7 The present invention provides a key connection circuit.

[0031] Among them, the figure markings are: 1-bottom box; 11-first contact frame; 12-second contact frame; 13-first boss; 14-second boss; 15-first spring; 16-second spring; 17-first guide hole; 18-second guide hole; 19-connecting cross bar; 2-controller; 21-first support platform; 22-second support platform; 23-first isolation plate; 24-second isolation plate; 25-first contact plate; 26-second contact plate; 27-first resistor; 28-second resistor; 29-series resistor; 210-sound playback module; 3-speaker; 4-cylinder; 5-LCD screen; 6-button; 7-voltage collection point; 8-main music box; 9-second music box; 10-memory; 110-power supply. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] The preferred implementation of this application is as follows Figures 1 to 7 As shown, the combined music box is divided into a main music box 8 and a sub-music box 9 when it is designed, wherein there is only one main music box 8 and there can be from one to nine sub-music boxes 9.

[0034] The main music box 8 and the auxiliary music box 9 together contain a bottom box 1, a first contact frame 11, a second contact frame 12, a first boss 13, a second boss 14, a first spring 15, a second spring 16, a first guide hole 17, a second guide hole 18, a connecting crossbar 19, a controller 2, a first support platform 21, a second support platform 22, a sound playing module 210, a speaker 3, a cylinder 4 and a liquid crystal screen 5. In addition, the main music box 8 also contains a first resistor 27 and a second resistor 28, and the auxiliary music box 9 also contains a first isolation plate 23, a second isolation plate 24, a first contact plate 25, a second contact plate 26 and a series resistor 29.

[0035] The first support platform 21 and the second support platform 22 are both fixed to the bottom surface of the bottom box 1, the first contact frame 11 and the second contact frame 12 are respectively fixed on the first support platform 21 and the second support platform 22, the first boss 13 and the second boss 14 are both fixed to the inner side of the bottom box 1, the connecting cross bar 19 is parallel to the bottom surface of the bottom box 1, passes through the middle winding coil of the first spring 15 and the second spring 16, and the two ends are respectively fixed on the first boss 13 and the second boss 14, the distance between the first spring 15 and the second spring 16 is equal to the distance between the first contact frame 11 and the second contact frame 12, and stretches by relying on its own tension, with one end pressed on the first contact frame 11 and the second contact frame 12, and the other end pressed on the inner side of the bottom box 1, the center distance between the first isolation plate 23 and the second isolation plate 24 is equal to the center distance between the first guide hole 17 and the second guide hole 18.

[0036] Reference Figure 1 and Figure 4 , the connecting cross bar 19 is made of conductive material, while the first boss 13, the second boss 14, the first support platform 21 and the second support platform 22 are made of non-conductive material. In the independent working mode, that is, when the main music box 8 is not connected in series with the auxiliary music box 9, the first spring 15 and the second spring 16 respectively stretch downward by their own tension and are in close contact with the first contact frame 11 and the second contact frame 12 respectively. When the auxiliary music box 9 is connected in series, that is, entering the combined working mode, the first isolation plate 23 and the second isolation plate 24 of the auxiliary music box 9 respectively pass through the first guide hole 17 and the second guide hole 18 of the main music box 8 or other auxiliary music boxes 9, forcing the first spring 15 and the second spring 16 to be separated from the contact with the first contact frame 11 and the second contact frame 12 respectively, which is equivalent to Figure 4 S1, S2 or S3 in the circuit is opened, and at the same time, since the first contact frame 11 and the first contact piece 25, the second contact frame 12 and the second contact piece 26 are directly connected through metal wires, the two pins of the series resistor 29 are connected to the first contact piece 25 and the second contact piece 26, which is equivalent to Figure 4 Point A1 is connected to point B1, point A2 is connected to point B2, two pins of the first resistor 27 of the main music box 8 are connected to the power supply 110 and the second resistor 28 respectively, one pin of the second resistor 28 is connected to the first contact frame 11 and the first resistor 27 at the same time, and the other pin is connected to the second contact frame 12 and the ground of the power supply 110 at the same time, and the voltage collection point 7 is located at the middle connection point of the first resistor 27 and the second resistor 28.

[0037] Preferably, the first isolation plate 23 and the second isolation plate 24 are made of plastic, the first spring 15, the second spring 16 and the connecting cross bar 19 are made of metal material, and the surface has good conductivity. This setting can ensure that S1 to S3 are effectively disconnected, and S4 of the terminal auxiliary music box 9 is well closed, forming an effective detection circuit.

[0038] The effect diagram of the music box connected in series with 3 auxiliary music boxes 9 is shown in the figure below. Figure 4 , there is only one main music box 8, and three auxiliary music boxes 9 are connected. The electrical effect of the first spring 15 and the second spring 16 in the music box is equivalent to the switch function of S1, S2 and S3. When the auxiliary music boxes 9 are connected in series, due to the action of the first isolation plate 23 and the second isolation plate 24, the first spring 15 and the second spring 16 are lifted upward, and S1, S2 and S3 are equivalent to the disconnected state in the circuit. Since there is no auxiliary music box 9 connected in series at the rear end of S4, the first spring 15 and the second spring 16 are in the default state, that is, they contact the first contact frame 11 and the second contact frame 12 respectively, which is equivalent to S4 being in the closed state. At this time, according to the formula , if the power supply VCC of the power supply 110 of the main music box 8 is 5V, the first resistor 27, i.e., R1, is 1k ohm, the second resistor 28, i.e., R2, is 10M ohm, and the series resistor 29, i.e., R3, is 250 ohm, then when no auxiliary music box 9 is connected in series, the voltage at the voltage collection point 7 is 5V, when one auxiliary music box 9 is connected in series, the voltage at the voltage collection point 7 is 1V, when two auxiliary music boxes 9 are connected in series, the voltage at the voltage collection point 7 is 1.67V, when three auxiliary music boxes 9 are connected in series, the voltage at the voltage collection point 7 is 2.14V, when four auxiliary music boxes 9 are connected in series, the voltage at the voltage collection point 7 is 2.5V, and when five auxiliary music boxes 9 are connected in series, the voltage at the voltage collection point 7 is 1.67V. When the main music box 8 is connected in series, the voltage of the voltage collection point 7 is 2.78V. When 6 auxiliary music boxes 9 are connected in series, the voltage of the voltage collection point 7 is 3V. When 7 auxiliary music boxes 9 are connected in series, the voltage of the voltage collection point 7 is 3.18V. When 8 auxiliary music boxes 9 are connected in series, the voltage of the voltage collection point 7 is 3.33V. When 9 auxiliary music boxes 9 are connected in series, the voltage of the voltage collection point 7 is 3.46V. When different numbers of auxiliary music boxes 9 are connected in series, the voltage of the voltage collection point 7 is different. Therefore, the main music box 8 can determine the number of connected auxiliary music boxes 9 and compare it with the set number value. If the two are consistent, the main music box 8 plays the second music.

[0039] The composition of the main music box 8 control system is referenced Figure 5, button 6, LCD screen 5, memory 10, voltage collection point 7, power supply 110 and sound playing module 210 are all connected to the main music box 8 through a line, the sound playing module 210 is used to drive the speaker 3 to play music, the voltage signal at the voltage collection point 7 is connected to the main music box 8, the power supply 110 supplies power to the main music box 8, the first music and the second music are both stored in the memory 10, wherein the first music can be played by the user operating the button 6, and the second music must be played automatically by the main music box 8 according to the program setting only when the number of auxiliary music boxes 9 is equal to the set value.

[0040] Reference to the composition of the control system of the auxiliary music box 9 Figure 6 , button 6, LCD screen 5, memory 10, power supply 110 and sound playing module 210 are all connected to the auxiliary music box 9 through lines. The user controls the auxiliary music box 9 to play or stop the first music and controls the LCD screen 5 to display the first picture through button 6.

[0041] Button 6 connection circuit reference Figure 7 , use 2 buttons, namely, parameter selection button, setting and play button, button 6 uses a pull-down circuit structure. When the button is not pressed, K1 or K2 is a low level. When the button is pressed, K1 or K2 is a high level. By detecting the difference in levels, it can be determined whether the button is pressed.

[0042] The working mode of the music box is that when the main music box 8 and the auxiliary music box 9 work independently, the power supply 110 of each music box supplies power to the music box where it is located, and the user can control the playing of the first music by operating the button 6, and the LCD screen 5 can display the first picture. When it is necessary to play the hidden second music, the first isolation sheet 23 and the second isolation sheet 24 of the auxiliary music box 9 are aligned with the first guide hole 17 and the second guide hole 18 of the previous stage in series and inserted, and the first isolation sheet 23 and the second isolation sheet 24 will push the first spring 15 and the second spring 16 upward, and at the same time, the first contact sheet 25 and the second contact sheet 26 will contact the first contact frame 11 and the second contact frame 12 respectively, and the set number of auxiliary music boxes 9 are connected in series accordingly, and the main music box 8 keeps collecting the voltage of the voltage collection point 7. When the voltage is equal to the formula When the calculated value is reached, the main music box 8 jumps out of the user's operation program for the main music box 8, enters the program for playing the second music, plays the second music, and the LCD screen 5 displays the second picture, completing the opening of the hidden function of the music box. When the number of cascaded auxiliary music boxes 9 is not equal to the number set by the main music box 8, the hidden function cannot be opened, that is, the second music is not played, the LCD screen 5 does not display the second picture, and the main music box 8 still plays the first music and displays the first picture according to the user's button 6 operation.

[0043] It should be noted that the first music and the second music mentioned in the present invention are for distinguishing the difference between music, and do not refer to a certain song or a certain type of music.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined music box, characterized in that: include: A main music box (8) and one to nine auxiliary music boxes (9), wherein the main music box (8) and the auxiliary music boxes (9) together comprise a bottom box (1), a first contact frame (11), a second contact frame (12), a first boss (13), a second boss (14), a first spring (15), a second spring (16), a first guide hole (17), a second guide hole (18), a connecting crossbar (19), a controller (2), a first support platform (21), a second support platform (22), a speaker (3), a cylinder (4) and a liquid crystal screen (5); the main music box (8) further comprises a first resistor (27), a second resistor (28) and a voltage collection point (7); and the auxiliary music box (9) further comprises a first isolation sheet (23), a second The invention relates to a spacer (24), a first contact piece (25), a second contact piece (26) and a series resistor (29); the first support platform (21) and the second support platform (22) are both fixed to the bottom of the bottom box (1); the first contact frame (11) and the second contact frame (12) are respectively fixed to the first support platform (21) and the second support platform (22); the first boss (13) and the second boss (14) are both fixed to the inner side of the bottom box (1); the connecting cross bar (19) is parallel to the bottom of the bottom box (1), passes through the middle winding coil of the first spring (15) and the second spring (16), and the two ends are respectively fixed to the first boss (13) and the second boss (14); the first The distance between the spring (15) and the second spring (16) is equal to the distance between the first contact frame (11) and the second contact frame (12), and the spring (15) and the second spring (16) are stretched by their own tension, with one end pressed on the first contact frame (11) and the second contact frame (12) respectively, and the other end pressed on the inner side of the bottom box (1), the center distance between the first isolation plate (23) and the second isolation plate (24) is equal to the center distance between the first guide hole (17) and the second guide hole (18), the material of the connecting cross bar (19) is conductive material, the first boss (13), the second boss (14), the first support platform (21) and the second support platform (22) are non-conductive materials, and the first resistor of the main music box (8) is The two pins of (27) are connected to the power supply (110) and the second resistor (28) respectively, one pin of the second resistor (28) is connected to the first contact frame (11) and the first resistor (27) at the same time, and the other pin is connected to the second contact frame (12) and the ground of the power supply (110) at the same time, the voltage collection point (7) is located at the middle connection point of the first resistor (27) and the second resistor (28), the first contact frame (11) and the first contact sheet (25), the second contact frame (12) and the second contact sheet (26) are directly connected by metal wires, the two pins of the series resistor (29) are connected to the first contact sheet (25) and the second contact sheet (26) respectively, in the independent working mode,The first spring (15) and the second spring (16) extend downwards by their own tension and are in close contact with the first contact frame (11) and the second contact frame (12) respectively. In the combined working mode, the first isolation plate (23) and the second isolation plate (24) pass through the first guide hole (17) and the second guide hole (18) respectively, forcing the first spring (15) and the second spring (16) to be separated from the contact with the first contact frame (11) and the second contact frame (12) respectively. At the same time, the first contact plate (25) and the second contact plate (26) are connected to the first contact frame (11) and the second contact frame (12) respectively. The resistance values ​​of the first resistor (27), the second resistor (28) and the series resistor (29) are set to R1, R2 and R3 respectively. The voltage of the power supply (110) is VCC. The number of the serially connected auxiliary music boxes (9) is set to N, where N is an integer and satisfies 1≤N≤9. The main music box (8) detects the voltage of the voltage collection point (7) in real time. When the voltage Vx of the voltage collection point (7) satisfies, When the user operates the main music box (8), the main music box (8) automatically plays the second music; otherwise, according to the user's operation, the main music box (8) plays the first music; the first isolation sheet (23) and the second isolation sheet (24) are made of plastic material; the first spring (15) and the second spring (16) are made of metal material, and the surface has good electrical conductivity; the first contact frame (11) and the second contact frame (12) are oblique strips, and are inclined toward the bottom of the first guide hole (17) and the second guide hole (18), respectively.

2. A combined music box according to claim 1, characterized in that: The structures of the first isolation sheet (23), the second isolation sheet (24), the first contact sheet (25) and the second contact sheet (26) are designed such that the combined cross-section of the first isolation sheet (23) and the first contact sheet (25) is smaller than the first guide hole (17), the combined cross-section of the second isolation sheet (24) and the second contact sheet (26) is smaller than the second guide hole (18), the first contact sheet (25) and the second contact sheet (26) are at the lower end, the first isolation sheet (23) and the second isolation sheet (24) are at the upper end, and the first contact sheet (25) and the second contact sheet (26) both pass through the side of the bottom box (1) and enter the interior of the bottom box (1).

3. A combined music box according to claim 1, characterized in that: The main music box (8) and the auxiliary music box (9) both include a button (6), a memory (10), a power source (110) and a sound playing module (210).

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