阅读说明：本技术 一种组合式音箱 (Combined sound box ) 是由 严宗宝 于 2021-09-23 设计创作，主要内容包括：本发明公开了一种组合式音箱,包括箱体和移动单元；箱体内侧中部沿水平方向设置有挡板,所述挡板将箱体的内部分为上下两个密闭的空间,两个密闭的空间的右侧分别设置有一个不同功率的放大器,两个两个密闭的空间的后侧分别设置有一个扬声器,同一个密闭的空间内部的放大器和扬声器之间通过一个连接线电连接,所述动力组件的下端设置有底板,所述底板的下侧设置有橡胶板,所述底板通过橡胶板与地面之间接触,到达指定的位置后在动力组件的作用下使底板实现上下移动的作用,在万向轮着地的情况下,底板通过橡胶板与地面之间的接触实现对组合式音箱的位置的固定作用,需要移动时升起底板使组合式音箱快速的实现移动的作用。(The invention discloses a combined sound box, which comprises a box body and a mobile unit, wherein the box body is provided with a sound box body; the middle part of the inner side of the box body is provided with a baffle plate along the horizontal direction, the baffle plate divides the inner part of the box body into an upper closed space and a lower closed space, the right sides of the two closed spaces are respectively provided with an amplifier with different power, the rear sides of the two closed spaces are respectively provided with a loudspeaker, the amplifier and the loudspeaker in the same closed space are electrically connected through a connecting wire, the lower end of the power assembly is provided with a bottom plate, the lower side of the bottom plate is provided with a rubber plate, the bottom plate is contacted with the ground through the rubber plate, the bottom plate achieves the effect of moving up and down under the effect of the power assembly after reaching a specified position, under the condition that the universal wheel lands, the bottom plate realizes the fixed action on the position of the combined sound box through the contact between the rubber plate and the ground, and the bottom plate is lifted to quickly realize the action of moving the combined sound box when the combined sound box needs to be moved.)

1. A combined sound box is characterized in that: comprises a box body (1) and a mobile unit (7);

case (1): the middle part of the inner side of the box body is provided with a baffle (2) along the horizontal direction, the baffle (2) divides the interior of the box body (1) into an upper closed space and a lower closed space, the right sides of the two closed spaces are respectively provided with an amplifier (3) with different power, the rear sides of the two closed spaces are respectively provided with a loudspeaker (4), the amplifier (3) and the loudspeaker (4) in the same closed space are electrically connected through a connecting wire (5), and the right ends of the two connecting wires (5) extend out of the interior of the box body (1) and are electrically connected with a wiring terminal (6);

mobile unit (7): include square groove one (71), universal wheel (72), bottom plate (73), rubber slab (74) and power component, square groove one (71) have been seted up to the downside of box (1), the downside four corners of box (1) is provided with one universal wheel (72) respectively, the inside upside of square groove one (71) is provided with power component, power component's lower extreme is provided with bottom plate (73), the downside of bottom plate (73) is provided with rubber slab (74), contact between bottom plate (73) through rubber slab (74) and the ground.

2. The modular loudspeaker of claim 1, wherein: the power component comprises a first fixed seat (75), a first movable shaft (76), a first connecting rod (77), a square block (78), a second connecting rod (79), a first pin shaft (710), a second fixed seat (711) and a second movable shaft (712), the upper side of the inside of the square groove I (71) is provided with two fixed seats I (75) in parallel, the insides of the two fixed seats I (75) are respectively and movably connected with the upper end of a connecting rod I (77) through a movable shaft I (76), the lower end of each connecting rod I (77) is movably connected with the upper end of a connecting rod II (79) through pin shafts I (710) on the front side and the rear side of a square block (78), two second fixing seats (711) corresponding to the first fixing seats (75) are arranged on the upper side of the bottom plate (73), and the lower end of each second connecting rod (79) is movably connected with one second fixing seat (711) through one second movable shaft (712).

3. The modular loudspeaker of claim 2, wherein: the power assembly further comprises a rotating shaft (713) and threads (714), the threads (714) in opposite directions are arranged on the side faces of the left end and the right end of the rotating shaft (713) respectively, and the side faces of the left end and the right end of the rotating shaft (713) are in threaded connection with the middle portions of the blocks (78) at the left end and the right end through the threads (714).

4. A modular speaker as claimed in claim 3, wherein: the power assembly further comprises an arc-shaped fixing block (715) and a motor (716), the motor (716) is fixedly connected to the lower end of the left side of the box body (1) through the arc-shaped fixing block (715), an output shaft of the motor (716) is fixedly connected with the left end of the rotating shaft (713), and an input end of the motor (716) is electrically connected with an output end of an external power supply through an external control switch.

5. The modular loudspeaker of claim 1, wherein: still include protection unit (8), protection unit (8) include round pin axle two (81), door plant (82), handle (83) and locking Assembly, swing joint between the right side at both ends about door plant (82) is respectively through round pin axle two (81) and the front side right-hand member of box (1), the front side left end of door plant (82) is provided with handle (83), locking Assembly sets up the upside front end at box (1), the cooperation joint between locking Assembly's lower extreme and the upper end of door plant (82).

6. The modular loudspeaker of claim 5, wherein: locking assembly includes round hole (84), stock (85), fender ring (86), disc (87) and circular slot (89), round hole (84) have been seted up along upper and lower direction to the upside front end of box (1), both ends are provided with one respectively about the inside of round hole (84) and keep off ring (86), sliding connection between the outside of stock (85) and the inboard of keeping off ring (86), the middle part of stock (85) is provided with disc (87), and disc (87) are located the inner of two fender rings (86), the upper end at door plant (82) is seted up in circular slot (89), the cooperation joint between the lower extreme side of stock (85) and the inside side of circular slot (89).

7. The modular loudspeaker of claim 6, wherein: locking Assembly still contains spring (88), fixed connection between the upper end of spring (88) and the lower extreme of upper end fender ring (86), fixed connection between the lower extreme of spring (88) and the upper end of disc (87), and spring (88) are located the outside of stock (85).

8. The modular loudspeaker of claim 6, wherein: the locking assembly further comprises a cylindrical block (810), the cylindrical block (810) is arranged at the upper end of the long rod (85), and the cylindrical block (810) is located on the upper side of the box body (1).

9. The modular loudspeaker of claim 1, wherein: the box body is characterized by further comprising a moving unit (9), wherein the moving unit (9) comprises a second square groove (91), a third movable shaft (92) and a hand-held rod (93), the second square groove (91) is formed between the left side and the right side of the box body (1), the upper ends of the two second square grooves (91) are respectively provided with the third movable shaft (92) along the front-back direction, and the hand-held rod (93) is arranged on the outer sides of the three movable shafts (92).

10. The modular loudspeaker of claim 9, wherein: the moving unit (9) further comprises a clamping groove (94) and a rubber protective shell (95), the clamping groove (94) is formed in the middle of the lower end of the hand-held rod (93), and the rubber protective shell (95) is clamped inside the clamping groove (94).

Technical Field

The invention relates to the technical field of combined sound boxes, in particular to a combined sound box.

Background

In the existing combined sound box, the box type tuning console and the sound box main body are generally two independent devices, and need to be respectively placed at two positions and then connected with each other through connecting wires when in use, so that the connecting wires are long, troublesome in connecting and occupy a certain placing space, and meanwhile, the connecting wires are troublesome when needing to repeatedly move the positions as required, and the box type tuning console and the sound box main body cannot be safely moved simultaneously only by one person;

the combined sound box provided with the application number of 201510216531.9 in the prior art comprises a sound box main body and a box type sound console, and is characterized in that an installation cavity is formed in the rear portion of the sound box main body, the box type sound console is accommodated and arranged in the installation cavity, a buckling plate is arranged on the upper portion of the installation cavity, at least one buckling hole is formed in the buckling plate, a movable buckling mechanism matched with the buckling hole is arranged on the upper portion of the box type sound console, the bottom of the box type sound console is fixedly connected with the bottom of the installation cavity through a detachable fixing mechanism, and the box type sound console is fixed in the installation cavity under the combined action of the movable buckling mechanism and the detachable fixing mechanism; the advantage is that the occupied space when using is saved, and the length of the connecting line between the box type tuning console and the main body of the sound box is greatly shortened;

although a combined sound box in the prior art well achieves the combined effect, the combined sound box with a large size is not easy to move, and the working efficiency is affected.

Disclosure of Invention

The invention aims to overcome the technical problem of the prior art, and provides a combined sound box, wherein the bottom plate is enabled to move up and down under the action of a power assembly after reaching a specified position, the bottom plate is enabled to fix the position of the combined sound box through the contact between a rubber plate and the ground under the condition that a universal wheel lands on the ground, and the bottom plate is lifted to enable the combined sound box to rapidly move when the combined sound box needs to move, so that the problems in the background technology can be effectively solved.

In order to achieve the purpose, the invention provides the following technical scheme: a combined sound box comprises a box body and a mobile unit;

a box body: the middle part of the inner side of the box body is provided with a baffle plate along the horizontal direction, the baffle plate divides the interior of the box body into an upper closed space and a lower closed space, the right sides of the two closed spaces are respectively provided with an amplifier with different power, the rear sides of the two closed spaces are respectively provided with a loudspeaker, the amplifier and the loudspeaker in the same closed space are electrically connected through a connecting wire, and the right ends of the two connecting wires extend out of the interior of the box body and are electrically connected with a wiring end;

a mobile unit: include square groove one, universal wheel, bottom plate, rubber slab and power component, square groove one has been seted up to the downside of box, the downside four corners of box is provided with a universal wheel respectively, the inside upside of square groove one is provided with power component, power component's lower extreme is provided with the bottom plate, the downside of bottom plate is provided with the rubber slab, the bottom plate passes through and contacts between rubber slab and the ground.

In two airtight spaces in the box, the volume that the amplifier through different power was come with the sound source transmission carries out the enlargies of different degrees, sound after the enlargies emits through the speaker, realize the effect to the removal of modular audio amplifier through the universal wheel, make the bottom plate realize the effect that reciprocates under power component's effect after arriving appointed position, under the condition that the universal wheel landed, the bottom plate passes through the fixed action of the contact realization between rubber slab and the ground to the position of modular audio amplifier, rise the effect that the quick realization of bottom plate messenger modular audio amplifier moved when needing to remove.

Further, power component includes fixing base one, loose axle one, connecting rod one, square, connecting rod two, round pin axle one, fixing base two and loose axle two, the inside upside of square groove one is provided with two fixing bases one side by side, swing joint between the upper end through a loose axle one and a connecting rod one respectively in the inside of two fixing bases one, the lower extreme of every connecting rod one through round pin axle one of both sides around a square and the upper end swing joint of a connecting rod two, the upside of bottom plate is provided with two fixing bases two that correspond with fixing base one position, and the lower extreme of every connecting rod two is through swing joint between a loose axle two and a fixing base two respectively.

The first connecting rod is enabled to realize the action of moving under the fixing action of the first fixing seat, the second connecting rod is enabled to realize the action of moving under the action of the second fixing seat, and the lower end of the first connecting rod is enabled to form a parallelogram structure capable of moving up and down under the action of the movable connection between the square block and the upper end of the second connecting rod, so that the bottom plate is driven to slide up and down.

Furthermore, power component still includes axis of rotation and screw thread, both ends side is provided with opposite direction's screw thread respectively about the axis of rotation, screw thread connection between the middle part of both ends' square about and through screw thread respectively about the axis of rotation.

Under the effect of threaded connection between the side surfaces of the left end and the right end of the rotating shaft and the middle parts of the square blocks at the left end and the right end of the rotating shaft respectively through threads, the two square blocks slide relatively along the horizontal direction through rotation of the rotating shaft, and the bottom plate is driven to slide up and down through relative sliding of the square blocks.

Further, power component still includes arc fixed block and motor, the motor passes through arc fixed block fixed connection at the left side lower extreme of box, fixed connection between the output shaft of motor and the left end of axis of rotation, the input of motor is connected through external control switch and external power source's output electricity.

The output shaft of the motor is driven to rotate under the action of the external power supply, and the rotation of the rotating shaft is driven through the rotation of the output shaft of the motor.

Further, still include the protective unit, the protective unit includes round pin axle two, door plant, handle and locking Assembly, swing joint between the right side at both ends about the door plant is respectively through round pin axle two and the front side right-hand member of box, the front side left end of door plant is provided with the handle, locking Assembly sets up the upside front end at the box, the cooperation joint between the lower extreme of locking Assembly and the upper end of door plant.

The door plate is made to move under the action of the second pin shaft, the sealing effect on the front side of the box body is achieved through the door plate, and the effect of facilitating movement of the door plate is achieved through the handle.

Further, locking Assembly includes round hole, stock, fender ring, disc and circular slot, the round hole has been seted up along upper and lower direction to the upside front end of box, both ends are provided with a fender ring respectively about the inside of round hole, sliding connection between the outside of stock and the inboard of fender ring, the middle part of stock is provided with the disc, and the disc is located the inner of two fender rings, the upper end at the door plant is seted up to the circular slot, the cooperation joint between the lower extreme side of stock and the inside side of circular slot.

Make the stock realize gliding effect under the effect of round hole, under the cooperation linkage effect through keeping off between ring and the disc, place the inside that the stock breaks away from the round hole, under the cooperation joint effect between the lower extreme side of stock and the inside side of circular slot, make the joint that the door plant is firm in the front side of box.

Further, locking Assembly still includes the spring, fixed connection between the upper end of spring and the lower extreme of upper end fender ring, fixed connection between the lower extreme of spring and the upper end of disc, and the spring is located the outside of stock.

Make the stock have a decurrent power under the effect of spring, make the cooperation joint between the lower extreme side of stock and the inside side of circular slot more stable through decurrent power.

Further, locking Assembly still includes the cylinder piece, the cylinder piece sets up in the upper end of stock, and the cylinder piece is located the upside of box, makes the stock more easily by the pulling through the cylinder piece.

The portable box comprises a box body and is characterized by further comprising a moving unit, wherein the moving unit comprises a square groove II, a movable shaft III and a hand-held rod, the square groove II is formed between the left side and the right side of the box body respectively, the upper ends of the inner parts of the two square grooves II are provided with the movable shaft III along the front-back direction respectively, and the hand-held rod is arranged on the outer sides of the two movable shafts III respectively.

The action of moving the hand-held rod is realized under the action of the third movable shaft, and the box body is carried through the hand-held rod.

Furthermore, the moving unit further comprises a clamping groove and a rubber protective shell, the middle of the lower end of the portable rod is provided with the clamping groove, and the rubber protective shell is clamped inside the clamping groove.

Make the rubber protective housing realize detachable effect under the effect of draw-in groove, play the effect of preventing to the transport personnel hand through the rubber protective housing.

Compared with the prior art, the invention has the beneficial effects that: this combination formula audio amplifier has following benefit:

1. the combined sound box is provided with the protection unit, the long rod is enabled to realize the sliding effect under the effect of the round hole, the long rod is placed to be separated from the inside of the round hole under the matching and connecting effect between the baffle ring and the disc, and the door plate is firmly clamped at the front side of the box body under the matching and clamping effect between the side surface of the lower end of the long rod and the side surface of the inside of the round groove;

2. the combined type sound box is provided with a moving unit, a first connecting rod is enabled to realize the moving effect under the fixed effect of a first fixing seat, a second connecting rod is enabled to realize the moving effect under the effect of a second fixing seat, and a parallelogram structure capable of moving up and down is formed under the effect that the lower end of the first connecting rod is movably connected with the upper end of the second connecting rod through a square block, so that a bottom plate is driven to slide up and down;

3. the combined sound box is provided with a moving unit, under the action of threaded connection between the side surfaces of the left end and the right end of a rotating shaft and the middle parts of square blocks at the left end and the right end respectively through threads, the two square blocks slide relatively in the horizontal direction through rotation of the rotating shaft, and the bottom plate is driven to slide up and down through the relative sliding of the square blocks;

4. the bottom plate can move up and down under the action of the power assembly after reaching the designated position, under the condition that the universal wheels are grounded, the bottom plate can fix the position of the combined type sound box through the contact between the rubber plate and the ground, and the bottom plate can be lifted up when the combined type sound box needs to be moved, so that the combined type sound box can be quickly moved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

fig. 3 is a schematic rear view of the present invention.

In the figure: 1 box body, 2 baffle plates, 3 amplifier, 4 loudspeaker, 5 connecting wire, 6 terminal, 7 moving unit, 71 square groove I, 72 universal wheel, 73 bottom plate, 74 rubber plate, 75 fixed seat I, 76 movable shaft I, 77 connecting rod I, 78 square, 79 connecting rod II, 710 pin shaft I, 711 fixed seat II, 712 movable shaft II, 713 rotating shaft, 714 screw thread, 715 arc fixed block, 716 motor, 8 protection unit, 81 pin shaft II, 82 door plate, 83 handle, 84 round hole, 85 long rod, 86 retaining ring, 87 round disc, 88 spring, 89 round groove, 810 cylindrical block, 9 moving unit, 91 square groove II, 92 movable shaft III, 93 hand-lift rod, 94 clamping groove and 95 rubber protective shell.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present embodiment provides a technical solution: a combined sound box comprises a box body 1 and a mobile unit 7;

a box body 1: the middle part of the inner side is provided with a baffle 2 along the horizontal direction, the baffle 2 divides the interior of the box body 1 into an upper closed space and a lower closed space, the right sides of the two closed spaces are respectively provided with an amplifier 3 with different power, the rear sides of the two closed spaces are respectively provided with a loudspeaker 4, the amplifier 3 and the loudspeaker 4 in the same closed space are electrically connected through a connecting wire 5, and the right ends of the two connecting wires 5 extend out of the interior of the box body 1 and are electrically connected with a wiring terminal 6;

the moving unit 7: include square groove 71, universal wheel 72, bottom plate 73, rubber slab 74 and power component, square groove 71 has been seted up to the downside of box 1, and the downside four corners of box 1 is provided with a universal wheel 72 respectively, and the inside upside of square groove 71 is provided with power component, and power component's lower extreme is provided with bottom plate 73, and the downside of bottom plate 73 is provided with rubber slab 74, and bottom plate 73 passes through and contacts between rubber slab 74 and the ground.

In two airtight spaces in box 1, the volume that comes with the sound source transmission through the amplifier 3 of different power carries out the enlargies of different degrees, the sound after enlargiing is emitted through speaker 4, the effect to the removal of combination formula audio amplifier is realized through universal wheel 72, reach the effect that makes bottom plate 73 realize reciprocating under power component's effect after the appointed position, under the condition that universal wheel 72 landed, the fixed action to the position of combination formula audio amplifier is realized through the contact between rubber slab 74 and the ground to bottom plate 73, rise bottom plate 73 when needing to remove and make the quick effect of realizing of combination formula audio amplifier remove.

The power assembly comprises a first fixed seat 75, a first movable shaft 76, a first connecting rod 77, a square 78, a second connecting rod 79, a first pin shaft 710, a second fixed seat 711 and a second movable shaft 712, wherein the upper side of the inside of the first square groove 71 is provided with the first fixed seat 75 in parallel, the insides of the first fixed seats 75 are respectively and movably connected with the upper end of the first connecting rod 77 through the first movable shaft 76, the lower end of each first connecting rod 77 is movably connected with the upper end of the second connecting rod 79 through the first pin shafts 710 on the front side and the rear side of the square 78, the upper side of the bottom plate 73 is provided with the second fixed seats 711 corresponding to the first fixed seat 75, and the lower end of each second connecting rod 79 is respectively and movably connected with the second fixed seats 711 through the second movable shaft 712.

The first connecting rod 77 is enabled to realize the action of moving under the fixing action of the first fixing seat 75, the second connecting rod 79 is enabled to realize the action of moving under the action of the second fixing seat 711, and the lower end of the first connecting rod 77 is enabled to form a parallelogram structure capable of moving up and down under the action of the movable connection between the block 78 and the upper end of the second connecting rod 79, so that the bottom plate 73 is driven to slide up and down.

The power assembly further comprises a rotating shaft 713 and threads 714, wherein the left and right side surfaces of the rotating shaft 713 are respectively provided with the threads 714 in opposite directions, and the left and right side surfaces of the rotating shaft 713 are respectively in threaded connection with the middle parts of the blocks 78 at the left and right ends through the threads 714.

Under the effect of the threaded connection between the lateral surfaces of the left end and the right end of the rotating shaft 713 and the middle parts of the blocks 78 at the left end and the right end through the threads 714, the two blocks 78 slide relatively in the horizontal direction through the rotation of the rotating shaft 713, and the bottom plate 73 is driven to slide up and down through the relative sliding of the blocks 78.

The power assembly further comprises an arc-shaped fixing block 715 and a motor 716, the motor 716 is fixedly connected to the lower end of the left side of the box body 1 through the arc-shaped fixing block 715, an output shaft of the motor 716 is fixedly connected with the left end of the rotating shaft 713, and an input end of the motor 716 is electrically connected with an output end of an external power supply through an external control switch.

The output shaft of the motor 716 is driven to rotate by the external power source, and the rotation of the output shaft of the motor 716 drives the rotation shaft 713 to rotate.

Still include protection unit 8, protection unit 8 includes two 81, door plant 82, handle 83 and the locking Assembly of round pin axle, and swing joint between the front side right-hand member of two 81 and box 1 of round pin axle respectively is passed through on the right side at both ends about door plant 82, and the front side left end of door plant 82 is provided with handle 83, and the locking Assembly sets up the upside front end at box 1, cooperation joint between the lower extreme of locking Assembly and the upper end of door plant 82.

Under the action of the second pin shaft 81, the door plate 82 is enabled to move, the door plate 82 is used for sealing the front side of the box body 1, and the handle 83 is used for facilitating movement of the door plate 82.

Locking assembly includes round hole 84, stock 85, keep off ring 86, disc 87 and circular slot 89, round hole 84 has been seted up along upper and lower direction to the upside front end of box 1, both ends are provided with one respectively about the inside of round hole 84 and keep off ring 86, sliding connection between the outside of stock 85 and the inboard of keeping off ring 86, the middle part of stock 85 is provided with disc 87, and disc 87 is located two inner that keep off ring 86, the upper end at door plant 82 is seted up to circular slot 89, the cooperation joint between the lower extreme side of stock 85 and the inside side of circular slot 89.

Make stock 85 realize gliding effect under the effect of round hole 84, under the cooperation connecting action between ring 86 and disc 87 through keeping off, place stock 85 and break away from the inside of round hole 84, under the cooperation joint effect between the lower extreme side of stock 85 and the inside side of circular slot 89, make the joint that door plant 82 stabilizes in the front side of box 1.

The locking assembly further comprises a spring 88, the upper end of the spring 88 is fixedly connected with the lower end of the upper stop ring 86, the lower end of the spring 88 is fixedly connected with the upper end of the disc 87, and the spring 88 is positioned on the outer side of the long rod 85.

The long rod 85 has a downward force under the action of the spring 88, and the matching clamping between the lower end side surface of the long rod 85 and the inner side surface of the circular groove 89 is more stable through the downward force.

The locking assembly further comprises a cylindrical block 810, the cylindrical block 810 is disposed at the upper end of the long rod 85, and the cylindrical block 810 is located at the upper side of the box body 1, so that the long rod 85 can be pulled more easily through the cylindrical block 810.

The box body is characterized by further comprising a moving unit 9, wherein the moving unit 9 comprises a square groove II 91, a movable shaft III 92 and a hand lever 93, the square groove II 91 is respectively formed between the left side and the right side of the box body 1, the movable shaft III 92 is respectively arranged at the upper ends of the two square groove II 91 in the front-back direction, and the hand lever 93 is respectively arranged on the outer sides of the two movable shaft III 92.

The action of moving the hand lever 93 by the action of the third movable shaft 92 realizes the action of carrying the box body 1 by the hand lever 93.

The moving unit 9 further includes a locking groove 94 and a rubber protective shell 95, the locking groove 94 is formed in the middle of the lower end of the hand lever 93, and the rubber protective shell 95 is locked inside the locking groove 94.

Make rubber protective housing 95 realize detachable effect under the effect of draw-in groove 94, play the effect of preventing to the carrier hand through rubber protective housing 95.

The working principle of the combined sound box provided by the invention is as follows:

in two closed spaces in the box body 1, the sound volume transmitted from the sound source is amplified to different degrees through the amplifiers 3 with different powers, the amplified sound is emitted through the loudspeaker 4, the action of the movement of the combined sound box is realized through the universal wheel 72, after the sound volume reaches a specified position, the output shaft of the motor 716 is driven to rotate under the action of an external power supply, the rotation of the output shaft of the motor 716 drives the rotation shaft 713 to rotate, under the action of the threaded connection between the side surfaces of the left end and the right end of the rotation shaft 713 and the middle parts of the square blocks 78 at the left end and the right end respectively through the threads 714, the two square blocks 78 relatively slide along the horizontal direction through the rotation of the rotation shaft 713, under the fixed action of the first fixed seat 75, the first connecting rod 77 realizes the movable action, under the action of the second fixed seat 711, under the action of the movable connection between the lower end of the first connecting rod 77 and the upper end of the second connecting rod 79 through the movable connection between the square blocks 78, the bottom plate 73 is fixed on the position of the combined sound box through the contact between the rubber plate 74 and the ground under the condition that the universal wheel 72 is grounded, the bottom plate 73 is lifted to quickly realize the movement when the movement is needed, the door plate 82 is moved under the action of the pin shaft two 81, the door plate 82 is sealed on the front side of the box body 1, the handle 83 is used for conveniently moving the door plate 82, the long rod 85 is pulled easily through the cylindrical block 810, the long rod 85 has a downward force under the action of the spring 88, the matched clamping between the side surface of the lower end of the long rod 85 and the side surface inside the circular groove 89 is more stable through the downward force, and the long rod 85 is slid under the action of the circular hole 84, under the cooperation linkage effect through between fender ring 86 and the disc 87, place stock 85 and break away from the inside of round hole 84, cooperation joint between the lower extreme side of stock 85 and the inside side of circular slot 89 is under the effect, the joint that makes door plant 82 stabilize is in the front side of box 1, make portable pole 93 realize the effect of activity under the effect of loose axle three 92, realize the effect to the transport of box 1 through portable pole 93, make rubber protecting shell 95 realize the detachable effect under the effect of draw-in groove 94, play the effect of preventing to the transport personnel hand through rubber protecting shell 95.

It is noted that the motor 716 disclosed in the above embodiments is a stepping motor, and the control switch set controls the operation of the motor 716 by a method commonly used in the prior art.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.