Extensible modularized sound box

Abstract

The invention belongs to the technical field of sound boxes, and particularly relates to an extensible modular sound box which comprises a machine body, a loudspeaker and a circuit device and further comprises a first round hole formed in the lower end of the machine body, a second round hole formed in the lower end of the machine body and a third round hole. The connecting assembly further comprises a first circular ring, a second circular ring, a third circular ring and a fourth circular ring, the flitch plates are mounted on the machine body in a sliding manner; the connecting rod is used for driving the flitch to slide, one end of the connecting rod is rotationally connected with the first circular ring, and the other end of the connecting rod is rotationally connected with the flitch; the second circular ring is mounted on the machine body in an up-down sliding manner; the first ratchet wheel is fixedly mounted on the periphery of the first circular ring; the first non-return block is mounted on the machine body, adopts a telescopic structure and is used for limiting one-way rotation of the first ratchet wheel; the first spring is mounted between the second circular ring and the first ratchet wheel; and through the connecting assembly, the two sound boxes can be assembled only by pressing each other, so that the use is convenient.

Description

Technical Field

[0001] The invention belongs to the field of sound boxes, in particular to an expandable modular sound box. Background Art

[0002] In order to achieve stereo sound when playing audio and video, a TV generally has multiple speakers installed inside the TV. The number of speakers depends on the design and size specifications of the TV. In order to facilitate production and installation, expandable modular speakers are needed to adapt to TVs of different sizes.

[0003] A patent application with publication number CN206542556U discloses an expandable modular thin speaker, including a box body, and also includes a first connecting part arranged at one end of the box body; a second connecting part arranged at the other end of the box body, the second connecting part being snap-fitted with the first connecting part; a woofer and a mid-high frequency speaker installed in the box body; and an expansion action is achieved by inserting the first connecting parts of two adjacent modular thin speakers into the second connecting parts.

[0004] When the speakers in the above solution are expanded, two adjacent speakers are connected by snap-fitting, but the connection is not tight. When the speakers are transported, vibrations may occur, which may cause the connection of the speakers to separate.

[0005] To this end, the present invention provides an expandable modular sound box. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: an expandable modular sound box described in the present invention includes a body, a speaker and a circuit device, and also includes: a No. 1 circular hole opened at the lower end of the body; a connecting component installed on the body, the connecting component also includes: a No. 1 circular ring rotatably installed on the body; a plurality of stickers slidably installed on the body; a connecting rod for driving the stickers to slide, one end of the connecting rod is rotatably connected to the No. 1 circular ring, and the other end of the connecting rod is rotatably connected to the sticker; a No. 2 circular ring slidably installed on the body, a No. 1 sliding groove is opened on the No. 2 circular ring, the No. 1 circular ring contains a protrusion, and the No. 1 circular ring is slidably connected to the No. 2 circular ring through the protrusion; a No. 1 ratchet fixedly installed on the outer periphery of the No. 1 circular ring; a No. 1 check block installed on the body, the No. 1 check block adopts a telescopic structure, and the No. 1 check block is used to limit the unidirectional rotation of the No. 1 ratchet; a No. 1 spring installed between the No. 2 circular ring and the No. 1 ratchet.

[0008] Preferably, a plurality of No. 2 frustum holes are provided in the No. 1 circular hole, and the connecting assembly further comprises a plurality of round rods fixedly mounted on the plate, the round rods being used for plugging into the No. 2 frustum holes, and the round rods adopt a telescopic structure.

[0009] Preferably, the connecting assembly further comprises: a friction plate slidably mounted on the pasting plate; and a No. 2 spring mounted between the friction plate and the pasting plate.

[0010] Preferably, it also includes a wiring assembly installed on the body, and the wiring assembly also includes: a plug slidably installed on the upper end of the body; a connector fixedly installed on the lower end of the body, and the plug and the connector are both connected to the circuit device; and a push plate slidably installed in the body, and the plug is installed on the push plate.

[0011] Preferably, the wiring assembly also includes: a No. 3 ring rotatably installed on the body, the No. 3 ring is rotatably connected to the body, and the No. 3 ring is threadedly connected to the push plate; a No. 2 ratchet installed on the outer circumference of the No. 3 ring; a No. 3 spring installed between the No. 2 ratchet and the body; a No. 2 check block installed on the body for sliding up and down, the No. 2 check block adopts a telescopic structure, and the No. 2 check block is used to limit the No. 2 ratchet to rotate in only one direction.

[0012] Preferably, the No. 1 check block is rotatably connected to the machine body, a slider is slidably mounted on the machine body, and the No. 1 check block is slidably connected to the slider.

[0013] Preferably, it further comprises: a groove provided on one side of the machine body, the slider being slidably connected to the groove; and a protrusion mounted on the slider for upward and downward sliding movement, the protrusion being located in the groove.

[0014] Preferably, it also includes: rotating a No. 1 gear mounted on the No. 3 ring, the No. 1 gear and the No. 2 ratchet wheel are unidirectionally transmitted; rotating a transmission assembly mounted on the body, the transmission assembly is used to transmit the No. 1 gear and the No. 1 ratchet wheel.

[0015] Preferably, the length of the sticking plate is greater than the depth of the No. 1 circular hole, the circular block is connected to the machine body in an up-and-down sliding manner, and a No. 4 spring is provided between the circular block and the machine body.

[0016] Preferably, the machine body comprises a plurality of No. 1 circular holes, and the machine body comprises a plurality of connecting components, and the number of the No. 1 circular holes is consistent with the number of the connecting components.

[0017] The beneficial effects of the present invention are as follows: 1. The expandable modular speaker of the present invention provides a sticker plate and a No. 1 round hole, and by pressing, the sticker plate on one speaker is tightly attached to the No. 1 round hole on another speaker to achieve the connection between the two speakers. In combination with the No. 2 frustum hole and the round rod, during the process of connecting the two speakers, the round rod is inserted into the No. 2 frustum hole, which further increases the firmness of the connection between the speakers and avoids the problem of separation of the expanded speakers due to vibration during transportation.

[0018] 2. The expandable modular speaker described in the present invention can automatically connect the circuit devices of the two speakers when connecting two speakers by setting a wiring assembly. Compared with the existing expandable speakers, there is no need to set the wiring of the circuit device outside. After all the speakers are connected, the wiring on the box is uniformly processed, which is more convenient for the expansion of the speakers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention; Figure 2 It is a schematic diagram of the internal structure of the body of the present invention; Figure 3 is a cross-sectional view of the side of the body of the present invention; Figure 4 is a cross-sectional view of a portion of the back of the body of the present invention; Figure 5 It is a schematic diagram of the structure of the first ring of the present invention; Figure 6 It is a structural schematic diagram of the No. 1 chute of the present invention; Figure 7 is a cross-sectional view of the first ring and the round block of the present invention; Figure 8 It is a structural schematic diagram of a round rod of the present invention; Fig. 9 It is a structural schematic diagram of the push plate of the present invention; In the figure: 1. body; 2. speaker; 3. circuit device; 4. round block; 5. round hole No. 1; 6. connecting assembly; 61. round ring No. 1; 62. sticking plate; 63. connecting rod; 64. round ring No. 2; 65. slide groove No. 1; 66. spring No. 1; 67. ratchet No. 1; 68. check block No. 1; 69. round rod; 610. friction plate; 611. spring No. 2; 7. truncated cone hole No. 2; 8. wiring assembly; 81. plug; 82. connector; 83. push plate; 84. round ring No. 3; 85. ratchet No. 2; 86. spring No. 3; 87. check block No. 2; 9. slider; 10. groove; 11. protrusion; 12. gear No. 1; 13. transmission assembly; 14. spring No. 4. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Embodiment 1

[0022] like Figure 1-9 As shown, an expandable modular sound box according to an embodiment of the present invention comprises a body 1, a plurality of speakers 2 and a circuit device 3, wherein the circuit device 3 and the speakers 2 are fixedly mounted in the body 1, and further comprises: a first circular hole 5 opened at the lower end of the body 1; a connecting assembly 6 mounted on the body 1, wherein the connecting assembly 6 further comprises: a first circular ring 61 rotatably mounted on the body 1; a plurality of plates 62 slidably mounted on the body 1; a connecting rod 63 for driving the plates 62 to slide, wherein one end of the connecting rod 63 is rotatably connected to the first circular ring 61, and the other end of the connecting rod 63 is connected to the first circular ring 61. One end is rotatably connected to the sticking plate 62; a No. 2 ring 64 is slidably installed on the body 1, and a No. 1 slide groove 65 is provided on the No. 2 ring 64, and the No. 1 ring 61 contains a protrusion, and the No. 1 ring 61 is slidably connected to the No. 2 ring 64 through the protrusion; a No. 1 ratchet 67 is fixedly installed on the outer periphery of the No. 1 ring 61; a No. 1 check block 68 is installed on the body 1, and the No. 1 check block 68 adopts a telescopic structure, and the No. 1 check block 68 is used to limit the unidirectional rotation of the No. 1 ratchet 67; a No. 1 spring 66 is installed between the No. 2 ring 64 and the No. 1 ratchet 67.

[0023] Specifically, the sound box body is a modular structure, wherein the speaker 2 is a sound module, and the circuit device 3 is a frequency division module. When assembling a single sound box, the modules are sequentially installed inside the body 1 to complete the assembly of the single sound box. In order to be suitable for televisions of different types or sizes, multiple sound boxes need to be spliced ​​together. When the sound box is spliced, multiple assembled bodies 1 can be spliced ​​together to form an expandable sound box. When the sound box of the existing device is expanded, two adjacent sound boxes are connected by a snap-on method, and the connection is not tight. When the sound box is transported, vibration will occur, and there is a problem of separation of the connection of the sound box. The No. 1 check block 68 limits the No. 1 ratchet 67 to only rotate counterclockwise. The sound device 2 adopts an electric speaker 2. The principle of the speaker 2 is similar to placing a current-carrying wire in a uniform magnetic field. The direction of the wire is perpendicular to the direction of the magnetic lines of force in the magnetic field. The coil through the alternating current signal moves in the magnetic field, causing the diaphragm connected to the speaker 2 to vibrate, thereby involving the vibration of the paper cone, and then transmitting the sound waves through the air medium. The circuit device 3 is used to separate the input analog audio signal into different parts such as treble, mid-range, and bass, and then send them to the corresponding speakers 2 respectively; when the speaker is working, the full-band sound signal is first divided into several frequency bands by the circuit device 3, and then these frequency bands are allocated to the corresponding speakers 2. The speaker 2 drives the diaphragm through electrical energy to push the air, thereby generating sound. When expanding the speaker, align the upper surface of the speaker with the lower surface of the other speaker, and then pressurize the upper and lower surfaces of the two speakers to reduce the distance between the two speakers. The second ring 64 of the lower speaker moves downward under the pressure, and the downward movement of the second ring 64 drives the first slide 65 to move downward synchronously. The downward movement of the first slide 65 causes the first ring 61 to rotate counterclockwise. The rotation of the first ring 61 drives the connecting rod 63 to rotate. The rotation of the connecting rod 63 pulls the sticking plate 62 to move toward the inner wall of the first circular hole 5 until the sticking plate 62 is in close contact with the inner wall of the first circular hole 5. At this time, the upper and lower surfaces of the two speakers are in close contact, so that the bodies 1 of the two speakers are connected, that is, the expansion action is achieved. The No. 1 check block 68 restricts the No. 1 ratchet 67 from rotating clockwise, so the No. 1 ring 61 cannot rotate clockwise, and the plate 62 cannot move. Due to the extrusion between the plate 62 and the No. 1 circular hole 5, the friction force is larger than that of the snap-fit ​​method, which improves the above-mentioned problem, and only needs to be pressed against each other, which is easy to use. At the same time, compared with the snap-fit ​​method, the overall length of several plates 62 is smaller than the diameter of the No. 1 circular hole 5, so there is no need to align very accurately. During the connection process, the two speakers can be automatically adjusted, which is easy to use. With the No. 1 ring 61, the upper end of the No. 1 ring 61 is higher than the length of the plate 62, which improves the problem of the plate 62 being hit and broken during transportation.

[0024] like Figure 7 , 8As shown, a number of No. 2 truncated cone holes 7 are opened in the No. 1 circular hole 5, and the connecting assembly 6 also includes a number of round rods 69 fixedly installed on the mounting plate 62, and the round rods 69 are used for plugging with the No. 2 truncated cone holes 7, and the round rods 69 adopt a telescopic structure.

[0025] Specifically, the round rod 69 is telescopic to adapt to the vertical movement of the No. 1 circular hole 5 and the sticking plate 62. When the sticking plate 62 approaches the inner wall of the No. 1 circular hole 5, the round rod 69 simultaneously approaches the inner wall of the No. 1 circular hole 5. During the movement, the round rod 69 contacts the No. 2 conical hole 7 until the round rod 69 is inserted into the No. 2 conical hole 7. By inserting the round rod 69 into the No. 2 conical hole 7, the firmness of the connection between the speakers is further increased. In combination with the No. 2 conical hole 7, the two speakers can be positioned so that the two speakers are aligned, which is convenient to use.

[0026] like Figure 8 As shown, the connecting assembly 6 also includes: a friction plate 610 slidably mounted on the contact plate 62 ; and a second spring 611 mounted between the friction plate 610 and the contact plate 62 .

[0027] Specifically, when the sticking plate 62 is close to the inner wall of the No. 1 circular hole 5, the friction plate 610 first contacts the No. 1 circular hole 5, and then the sticking plate 62 continues to move, so that the distance between the sticking plate 62 and the friction plate 610 is reduced, and the No. 2 spring 611 is compressed. After the connection is completed, the elastic force of the No. 2 spring 611 increases the friction force between the friction plate 610 and the inner wall of the No. 1 circular hole 5, further increasing the firmness of the connection and avoiding the relative shaking of the two speakers, which may cause the round rod 69 to break.

[0028] like Figure 1 , 4 , 9, also includes a wiring assembly 8 installed on the body 1, the wiring assembly 8 also includes: a plug 81 slidably installed on the upper end of the body 1; a connector 82 fixedly installed on the lower end of the body 1, the plug 81 and the connector 82 are both connected to the circuit device 3; a push plate 83 slidably installed in the body 1, and the plug 81 is installed on the push plate 83.

[0029] Specifically, after the two speakers are connected, the push plate 83 on one side of the connection surface can be controlled to move upward, driving the plug 81 to move upward synchronously until the connector 82 is inserted into the connector 82 of the other speaker, so as to realize the connection of the circuit devices 3 of the two speakers; the existing expandable speakers set the wiring of the circuit device 3 on the outside, and after all the speakers are connected, the wiring on the box is uniformly processed. This method does not need to set the wiring on the outside, and is convenient for transportation and connection.

[0030] like Figure 4 , 5As shown, the wiring assembly 8 also includes: a No. 3 ring 84 rotatably mounted on the body 1, the No. 3 ring 84 is rotatably connected to the body 1, and the No. 3 ring 84 is threadedly connected to the push plate 83; a No. 2 ratchet 85 mounted on the outer periphery of the No. 3 ring 84; a No. 3 spring 86 mounted between the No. 2 ratchet 85 and the body 1; a No. 2 check block 87 slidably mounted on the body 1 up and down, the No. 2 check block 87 adopts a telescopic structure, and the No. 2 check block 87 is used to limit the No. 2 ratchet 85 to only rotate in one direction.

[0031] Specifically, the No. 2 check block 87 limits the No. 2 ratchet 85 to rotate only counterclockwise. In the initial state, the No. 3 spring 86 is twisted; when the two speakers are connected, the distance between the two speakers is reduced. When the round rod 69 is inserted into the No. 2 cone hole 7, the two speakers are aligned. At this time, the upper end of the No. 2 check block 87 contacts the surface of the other speaker and moves downward under the push of the other speaker until the No. 2 check block 87 is completely entered into the interior of the body 1. At this time, the No. 2 check block 87 is not in contact with the No. 2 ratchet 85. Therefore, the No. 2 ratchet 85 rotates clockwise under the action of the elastic force of the No. 3 spring 86. The rotation of the No. 2 ratchet 85 drives the No. 3 ring 84 to rotate synchronously. The rotation of the No. 3 ring 84 causes the push plate 83 to move upward. The upward movement of the push plate 83 can drive the plug 81 to be inserted into the connector 82, so as to realize the connection between the two speaker circuit devices 3, which is easy to use.

[0032] like Figure 2 , 3 As shown in 5, the No. 1 check block 68 is rotationally connected to the body 1, a slider 9 is slidably installed on the body 1, and the No. 1 check block 68 is slidably connected to the slider 9.

[0033] Specifically, there is a step above the No. 1 slide groove 65. When the No. 2 ring 64 drives the No. 1 slide groove 65 to slide downward relative to the No. 1 ring 61, the No. 1 ring 61 rotates counterclockwise, and then when the No. 1 ring 61 rotates clockwise, the No. 2 ring 64 remains stationary; when one of the speakers has a problem, the slider 9 is slid backward, and the movement of the slider 9 drives the No. 1 check block 68 to move synchronously. Since the No. 1 check block 68 is rotatably connected to the body 1, the movement trajectory of the No. 1 check block 68 is an arc shape, and the No. 1 check block 68 rotates clockwise, and the rotation of the No. 1 check block 68 drives the No. 1 ratchet 67 to rotate clockwise synchronously. The clockwise rotation of the No. 1 ratchet 67 causes the No. 1 ring 61 to rotate clockwise. The clockwise rotation of the No. 1 ring 61 pushes the sticking plate 62 to move in the direction close to the central axis of the No. 1 circular hole 5 through the connecting rod 63, so that the sticking plate 62 is not in contact with the No. 1 circular hole 5. At this time, the two speakers are separated, which is convenient for maintenance and easy to use.

[0034] like Figure 1 , 5As shown, it also includes: a groove 10 opened on one side of the body 1, and the slider 9 is slidably connected to the groove 10; a protrusion 11 installed on the slider 9 for upward and downward sliding movement, and the protrusion 11 is located in the groove 10.

[0035] Specifically, by providing the protrusion 11 and the groove 10, the movement of the slider 9 and the check block is limited. At the same time, when the protrusion 11 is not pressed into the slider 9, the slider 9 cannot be moved, thereby avoiding accidental touching of the slider 9 and causing the speaker to separate.

[0036] like Figure 5 As shown, it also includes: a No. 1 gear 12 rotatably mounted on the No. 3 ring 84, the No. 1 gear 12 and the No. 2 ratchet 85 are unidirectionally transmitted; a transmission assembly 13 rotatably mounted on the body 1, the transmission assembly 13 is used to transmit the No. 1 gear 12 and the No. 1 ratchet 67.

[0037] Specifically, the No. 1 gear 12 and the No. 2 ratchet 85 are transmitted in one direction to avoid mutual interference during assembly; when the No. 1 check block 68 drives the No. 1 ratchet 67 to rotate clockwise, the No. 1 ratchet 67 drives the No. 1 gear 12 to rotate counterclockwise through the one-way transmission component 13, and the counterclockwise rotation of the No. 1 gear 12 causes the No. 3 ring 84 to rotate counterclockwise, and the counterclockwise rotation of the No. 3 ring 84 causes the push plate 83 to move downward, and the movement of the push plate 83 drives the plug 81 to move downward synchronously until the push plate 83 is separated from the plug 81; through the transmission component 13, when the two speakers are separated, the plug 81 and the connector 82 can be separated synchronously, which is convenient to use.

[0038] like Figure 4 , 7 As shown, the length of the sticking plate 62 is greater than the depth of the No. 1 round hole 5 , the round block 4 is connected to the machine body 1 by sliding up and down, and a No. 4 spring 14 is provided between the round block 4 and the machine body 1 .

[0039] Specifically, if the round block 4 cannot move, the friction plate 610 needs to be tightly attached to the inner wall of the No. 1 circular hole 5 while moving upward along the inner wall of the No. 1 circular hole 5, so a greater force is required when pressing the two speakers; in the process of the sticking plate 62 being inserted into the No. 1 circular hole 5 and sticking to the inner wall of the No. 1 circular hole 5, the upper surface of the sticking plate 62 first contacts the inner wall of the No. 1 circular hole 5, and then the friction plate 610 contacts the inner wall of the No. 1 circular hole 5. In order to increase the friction between the friction plate 610 and the inner wall of the No. 1 circular hole 5, the sticking plate 62 continues to move toward the inner wall of the No. 1 circular hole 5. At this time, the distance between the two speakers continues to decrease, so the sticking plate 62 pushes the round block 4 to move upward, thereby improving the above-mentioned problem. Embodiment 2

[0040] like Figure 1 , 2As shown, in comparison with Example 1, another implementation of the present invention is: the body 1 contains a plurality of No. 1 circular holes 5, the body 1 contains a plurality of connecting components 6, and the number of the No. 1 circular holes 5 is consistent with the number of the connecting components 6.

[0041] Specifically, by providing a plurality of groups of No. 1 round holes 5 and connecting components 6, the connection between the two speakers is made more secure.

[0042] Working principle: When the speaker is working, the full-band sound signal is first divided into several frequency bands by the circuit device 3, and then these frequency bands are allocated to the corresponding speakers 2. The speaker 2 drives the diaphragm through electric energy to push the air, so as to produce sound. When the speaker is expanded, the upper surface of the speaker is aligned with the lower surface of another speaker, and then the upper and lower surfaces of the two speakers are pressurized to reduce the distance between the two speakers. The second ring 64 of the lower speaker is pressurized and moves downward, and the second ring The downward movement of the first slide 64 drives the first slide 65 to move downward synchronously. The downward movement of the first slide 65 causes the first ring 61 to rotate counterclockwise. The rotation of the first ring 61 drives the connecting rod 63 to rotate. The connecting rod 63 rotates and pulls the sticking plate 62 to move toward the inner wall of the first circular hole 5 until the sticking plate 62 is in close contact with the inner wall of the first circular hole 5. At this time, the upper and lower surfaces of the two speakers are in close contact, so that the bodies 1 of the two speakers are connected, that is, the expansion action is realized. The first check block 68 restricts the first ratchet 67 from rotating clockwise. The needle rotates, so the No. 1 ring 61 cannot rotate and the clockwise rotates. When the sticking plate 62 approaches the inner wall of the No. 1 circular hole 5, the round rod 69 simultaneously approaches the direction close to the inner wall of the No. 1 circular hole 5. During the movement, the round rod 69 contacts the No. 2 cone hole 7 until the round rod 69 is inserted into the No. 2 cone hole 7. When the two speakers are connected, the distance between the two speakers is reduced. After the round rod 69 is inserted into the No. 2 cone hole 7, the two speakers are aligned. At this time, the upper end of the No. 2 check block 87 is aligned with the other speaker. 85 contacts the surface of the second speaker and moves downward under the push of the other speaker until the second check block 87 is completely entered into the interior of the body 1. At this time, the second check block 87 is not in contact with the second ratchet 85. Therefore, the second ratchet 85 rotates clockwise under the action of the elastic force of the third spring 86. The rotation of the second ratchet 85 drives the third ring 84 to rotate synchronously. The rotation of the third ring 84 causes the push plate 83 to move upward. The upward movement of the push plate 83 can drive the plug 81 to be inserted into the connector 82, so as to realize the connection between the two speaker circuit devices 3.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An expandable modular sound box, comprising a body (1), a plurality of speakers (2) and a circuit device (3), wherein the circuit device (3) and the speakers (2) are fixedly installed in the body (1), characterized in that: Also includes: A round block (4) mounted on the machine body (1); A No. 1 circular hole (5) formed on the circular block (4); A connection assembly (6) mounted on the machine body (1), the connection assembly (6) further comprising: Rotating a first circular ring (61) mounted on the machine body (1); A plurality of mounting plates (62) slidably mounted on the machine body (1); a connecting rod (63) for driving the sticking plate (62) to slide, one end of the connecting rod (63) being rotatably connected to the first ring (61), and the other end of the connecting rod (63) being rotatably connected to the sticking plate (62); A second circular ring (64) is slidably mounted on the body (1) up and down, a first sliding groove (65) is provided on the second circular ring (64), and a protrusion is provided on the first circular ring (61), and the first circular ring (61) is slidably connected to the second circular ring (64) via the protrusion; A first ratchet wheel (67) fixedly mounted on the outer circumference of the first circular ring (61); a first check block (68) mounted on the machine body (1), the first check block (68) being a telescopic structure, and the first check block (68) being used to limit the one-way rotation of the first ratchet wheel (67); A No. 1 spring (66) is installed between the No. 2 circular ring (64) and the No. 1 ratchet wheel (67).

2. The expandable modular sound box according to claim 1, characterized in that: A plurality of No. 2 truncated cone holes (7) are provided in the No. 1 circular hole (5), and the connecting assembly (6) further comprises a plurality of round rods (69) fixedly mounted on the mounting plate (62), the round rods (69) being used for plugging into the No. 2 truncated cone holes (7), and the round rods (69) are of a telescopic structure.

3. The expandable modular sound box according to claim 2, characterized in that: The connection component (6) further comprises: A friction plate (610) slidably mounted on the contact plate (62); A second spring (611) is installed between the friction plate (610) and the contact plate (62).

4. The expandable modular sound box according to claim 3, characterized in that: It also includes a wiring assembly (8) mounted on the machine body (1), and the wiring assembly (8) also includes: A plug (81) slidably mounted on the upper end of the body (1); A connector (82) fixedly mounted at the lower end of the body (1), wherein the plug (81) and the connector (82) are both connected to the circuit device (3); A push plate (83) is slidably mounted inside the machine body (1), and the plug (81) is mounted on the push plate (83).

5. The expandable modular sound box according to claim 4, characterized in that: The wiring assembly (8) further comprises: A third circular ring (84) rotatably mounted on the machine body (1), the third circular ring (84) being rotatably connected to the machine body (1), and the third circular ring (84) being threadedly connected to the push plate (83); A second ratchet wheel (85) mounted on the outer periphery of the third ring (84); A third spring (86) installed between the second ratchet wheel (85) and the machine body (1); A second check block (87) is slidably mounted on the machine body (1) up and down, the second check block (87) adopts a telescopic structure, and the second check block (87) is used to limit the second ratchet wheel (85) to rotate in only one direction.

6. The expandable modular sound box according to claim 5, characterized in that: The first check block (68) is rotatably connected to the machine body (1); a slider (9) is slidably mounted on the machine body (1); and the first check block (68) is slidably connected to the slider (9).

7. The expandable modular sound box according to claim 6, characterized in that: Also includes: A groove (10) is provided on one side of the body (1), and the sliding block (9) is slidably connected to the groove (10); A protrusion (11) is mounted on the sliding block (9) in a manner that it slides up and down, and the protrusion (11) is located in the groove (10).

8. The expandable modular sound box according to claim 7, characterized in that: Also includes: Rotating a number one gear (12) mounted on the number three ring (84), the number one gear (12) and the number two ratchet wheel (85) transmitting in one direction; A transmission assembly (13) is rotatably mounted on the machine body (1), wherein the transmission assembly (13) is used to transmit the first gear (12) and the first ratchet wheel (67).

9. The expandable modular sound box according to claim 8, characterized in that: The length of the sticking plate (62) is greater than the depth of the No. 1 circular hole (5); the circular block (4) is connected to the machine body (1) in an up-and-down sliding manner; and a No. 4 spring (14) is provided between the circular block (4) and the machine body (1).

10. The expandable modular sound box according to claim 9, characterized in that: The machine body (1) comprises a plurality of No. 1 circular holes (5), and the machine body (1) comprises a plurality of connecting components (6), wherein the number of the No. 1 circular holes (5) is the same as the number of the connecting components (6).

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