CN113938777A - Case type audio and video sound equipment - Google Patents

Abstract

The invention discloses a case type audio and video sound equipment, belonging to the technical field of sound equipment; the utility model provides a case and bag type audio frequency and video sound equipment, includes base, organism and a plurality of universal wheel, the perpendicular fixed mounting of organism is at the base upper surface, and is a plurality of universal wheel symmetry fixed mounting is in the base bottom surface, organism upper surface bilateral symmetry level fixed mounting has two dogs, fixed surface installs control panel on the organism, the organism front surface inlays and is equipped with the player, two rotate through the pivot between the dog and install the display screen, the organism front surface is equipped with protective part, protective part includes two lead screws, two sliders, diaphragm and folding cloth, be connected through two sets of transmission part between pivot and the two lead screws. The invention effectively solves the problems that the equipment and the case are simply put together after being separately manufactured and are inconvenient to take and place before and after use.

Description

Case type audio and video sound equipment

Technical Field

The invention relates to the technical field of sound equipment, in particular to case type audio and video sound equipment.

Background

With the continuous development of social science and technology, various plug-in cards such as small portable MP3, MP4 and a usb disk, small audio/video multimedia players such as a mobile hard disk and mobile devices capable of storing digital audio/video files appear in the life of people, and audio/video sound equipment also starts to be arranged in a relatively small size, so that case-type audio/video sound equipment appears in the market.

The existing case type sound equipment does not have a display function, when a video is played, the existing case type sound equipment needs to be connected with external display equipment, so that the function of the equipment is single, when the equipment is used, in order to obtain good tone quality, a player part needs to be exposed outside generally, and because the player part is net-shaped, when the equipment is not used, the player part needs to be covered in a case so as to prevent dust from entering the interior of a machine body and influencing the normal use of the equipment, because the equipment and the case are simply put together after being independently manufactured, the equipment is very inconvenient to take and place before use and after use.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention aims to provide a case type audio and video sound equipment, which aims to solve the problems in the background technology:

because the equipment and the case are simply put together after being independently manufactured, the equipment and the case are very inconvenient to take and place before and after use.

2. Technical scheme

In order to achieve the purpose, the invention provides the following technical scheme:

a case type audio and video sound equipment comprises a base, an equipment body and a plurality of universal wheels, wherein the equipment body is vertically and fixedly arranged on the upper surface of the base, the universal wheels are symmetrically and fixedly arranged on the bottom surface of the base, the upper surface of the equipment body is horizontally and symmetrically and fixedly provided with two stop blocks, the upper surface of the equipment body is fixedly provided with a control panel, the front surface of the equipment body is embedded with a player, the player is electrically connected with the control panel, a display screen is rotatably arranged between the two stop blocks through a rotating shaft, the display screen is fixedly sleeved on the rotating shaft and is electrically connected with the control panel, the two ends of the rotating shaft are respectively rotatably arranged in one surface of the two stop blocks which are close to each other, the front surface of the equipment body is provided with a protective part, the protective part comprises two lead screws, two slide blocks, a transverse plate and folding cloth, the left side surface and the right side surface of the equipment body are both vertically provided with slide grooves, two the lead screw is perpendicular to rotate respectively and is installed in two spouts, two the slider is slidable mounting respectively in two spouts, and the threaded sleeve is established on two lead screws respectively, the horizontal fixed mounting of diaphragm is at organism front surface upside, folding cloth top and diaphragm bottom surface fixed connection, folding cloth bottom and two slider upper surface fixed connection, be connected through two sets of transmission part between pivot and the two lead screws.

Preferably, transmission part includes first gear, transmission shaft, second gear, third gear and fourth gear, bilateral symmetry has seted up two first arrangement cavities in the stopper, the transmission shaft level is rotated and is installed in the stopper, and both ends penetrate two first arrangement cavitys respectively, the second gear is fixed to be cup jointed at the transmission shaft left end, the pivot tip penetrates the first arrangement cavity of keeping away from the lead screw, the fixed cover of first gear is connected at the pivot tip, and is connected with the meshing of second gear, the lead screw top penetrates the first arrangement cavity of keeping away from the pivot, the third gear is fixed to be cup jointed on the lead screw top, the fourth gear is fixed to be cup jointed at the transmission shaft right-hand member, and is connected with the meshing of third gear.

Preferably, the perpendicular fixed mounting in base upper surface has the mounting plate, mounting plate front surface and organism back fixed connection, the mounting plate back is equipped with tractive part, tractive part includes two otic placodes, vaulting pole, pull rod and two sets of locking part, two the horizontal fixed mounting of otic placode bilateral symmetry is at the mounting plate back, the vaulting pole level is rotated the cover and is established in two otic placodes, the fixed cup joint of pull rod one end is on the vaulting pole.

Preferably, the locking part comprises a bottom plate, two clamping plates, two push plates, two racks, two tension springs, a support rod and a gear, the bottom plate is horizontally and fixedly arranged on the back surface of the placing plate, a second placing cavity is formed in the bottom of the second placing cavity, the support rod is horizontally and fixedly arranged at the bottom of the second placing cavity, the gear is sleeved on the support rod in a rotating manner, sliding holes are horizontally formed in the left side surface and the right side surface of the bottom plate, one ends, close to each other, of the two sliding holes are communicated with the second placing cavity, the two push plates are respectively and horizontally and slidably arranged in the two sliding holes, the two racks are respectively and horizontally and fixedly arranged on the surfaces, close to each other, of the two push plates and are meshed with the gear, the two clamping plates are respectively and fixedly arranged at the ends, far away from the clamping plates, of the two tension springs are respectively and horizontally arranged at the ends, far away from the clamping plates, of the two tension springs are respectively and fixedly connected with the end parts of the push plates and the side walls of the second placing cavity, the draw-in groove has all been seted up to the side about the pull rod, the equal bilateral symmetry of pull rod upper and lower surface is seted up the guide way that is the slope form.

Preferably, a sliding cavity is vertically formed in the pull rod, a connecting rod is vertically slidably mounted in the sliding cavity, a supporting plate is horizontally and fixedly mounted at one end, far away from the machine body, of the connecting rod, telescopic rods are horizontally and fixedly mounted at two ends of the supporting plate, a handle is fixedly mounted on the front surface of the supporting plate, and an adjusting part is arranged in the pull rod.

Preferably, adjusting part includes screw rod, first bevel gear, second bevel gear, connecting axle and runner, it settles the chamber to have seted up the third in the pull rod, the screw rod is rotated perpendicularly and is installed in the pull rod, and both ends penetrate respectively and smooth chamber and third settle the chamber, connecting rod threaded sleeve establishes on the screw rod, the fixed cover of first bevel gear is established in the one end that the connecting rod was kept away from to the screw rod, the connecting axle level is rotated the cover and is established in the pull rod lateral wall, and one end penetrates the third and settles the intracavity, the fixed end that connects at the connecting axle of second bevel gear, and be connected with first bevel gear meshing, the fixed tip of keeping away from second bevel gear at the connecting axle that cup joints of runner.

3. Advantageous effects

(1) The video can be played through the display screen at the top end of the machine body, the display screen is not required to be connected with external display equipment, the use is convenient, the display screen is arranged at the top of the machine body and can be turned over, and when the video is not used, the display screen can cover the upper part of the control panel and is matched with the two stop blocks, so that the control panel can be protected;

(2) when the player is used, the display screen is turned upwards, the display screen drives the rotating shaft to rotate, the rotating shaft drives the two screw rods to rotate through the transmission part, the screw rods drive the two sliding blocks to drive the folding cloth to move upwards, the player is exposed, and the player is convenient to use;

(3) the turnover device has the advantages that the turnover of the pull rod can be realized through the matching of the two ear plates and the support rod, the pull rod has different functions through the matching of the two groups of locking parts, when the pull rod is limited in the locking part positioned above, the whole device can be supported, the transportation and the movement of equipment are convenient, when the pull rod is limited in the locking part positioned below, the machine body and the base can be supported under the matching of the connecting rod, the support plate and the two telescopic rods, the machine body is supported, the device is convenient to use, no additional support device is needed, the placement of the equipment is convenient, and the whole device can be conveniently transported and placed through the mode;

(4) the length of the whole pulling part can be adjusted through the adjusting part, the height of the machine body can be adjusted according to the height of a user when the machine body is placed, the user can conveniently operate the control panel, the length of the whole pulling part and the length of the whole adjusting rod can be adjusted according to the height of the user when the machine body is transported, and the device is convenient to transport.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of a case type audio/video sound equipment provided by the invention when in use;

fig. 2 is a schematic side-view partial cross-sectional structure diagram of a case type audio/video sound equipment provided by the invention;

fig. 3 is an enlarged view of a structure at a position a in fig. 2 in the case type audio/video sound equipment provided by the invention;

fig. 4 is a schematic structural view of a local cross section of the back of a case type audio/video sound equipment provided by the invention;

fig. 5 is a schematic cross-sectional structural view of a locking component in a case type audio/video sound equipment provided by the invention;

fig. 6 is a schematic cross-sectional structure view of a pull rod in a case type audio/video sound equipment provided by the invention;

fig. 7 is an enlarged view of a structure at a position B in fig. 4 in the case type audio/video sound equipment provided by the present invention;

fig. 8 is a schematic top view of a bag-type audio/video sound device according to the present invention;

fig. 9 is a schematic perspective view of a case type audio/video sound device according to the present invention when it is folded.

In the figure: 1. a base; 2. a body; 3. a universal wheel; 4. a stopper; 5. a control panel; 6. a player; 7. a rotating shaft; 8. a display screen; 9. a screw rod; 10. a slider; 11. a transverse plate; 12. folding the cloth; 13. a first gear; 14. a drive shaft; 15. a second gear; 16. a third gear; 17. a first housing chamber; 18. placing a plate; 19. an ear plate; 20. a stay bar; 21. a pull rod; 22. a base plate; 23. clamping a plate; 24. pushing the plate; 25. a rack; 26. a tension spring; 27. a strut; 28. a gear; 29. a second housing chamber; 30. a slide hole; 31. a card slot; 32. a guide groove; 33. a slide chamber; 34. a connecting rod; 35. a supporting plate; 36. a telescopic rod; 37. a screw; 38. a first bevel gear; 39. a second bevel gear; 40. a connecting shaft; 41. a rotating wheel; 42. a third housing chamber; 43. a handle; 44. a fourth gear.

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.

Example 1:

referring to fig. 1-9, a case type audio and video sound equipment comprises a base 1, a machine body 2 and a plurality of universal wheels 3, wherein the machine body 2 is vertically and fixedly installed on the upper surface of the base 1, the universal wheels 3 are symmetrically and fixedly installed on the bottom surface of the base 1, two stop blocks 4 are horizontally and fixedly installed on the upper surface of the machine body 2 in a bilateral symmetry manner, a control panel 5 is fixedly installed on the upper surface of the machine body 2, a player 6 is embedded on the front surface of the machine body 2, the player 6 is electrically connected with the control panel 5, a display screen 8 is rotatably installed between the two stop blocks 4 through a rotating shaft 7, the display screen 8 is fixedly sleeved on the rotating shaft 7 and is electrically connected with the control panel 5, two ends of the rotating shaft 7 are respectively rotatably installed in a plane where the two stop blocks 4 are close to each other, a protection part is arranged on the front surface of the machine body 2, the protection part comprises two lead screws 9, two slide blocks 10, a transverse plate 11 and a folding cloth 12, the side all has seted up the spout perpendicularly about organism 2, and two lead screws 9 rotate perpendicularly respectively and install in two spouts, and two sliders 10 are slidable mounting respectively in two spouts, and the threaded sleeve is established on two lead screws 9 respectively, and the horizontal fixed mounting of diaphragm 11 is at 2 front surface upsides of organism, and 12 tops of folding cloth and 11 bottom surfaces fixed connection of diaphragm, and 12 bottoms of folding cloth and two sliders 10 go up fixed surface and be connected through two sets of transmission parts between pivot 7 and the two lead screws 9.

The transmission part comprises a first gear 13, a transmission shaft 14, a second gear 15, a third gear 16 and a fourth gear 44, two first arrangement cavities 17 are symmetrically arranged in the stop block 4 in a bilateral mode, the transmission shaft 14 is horizontally installed in the stop block 4 in a rotating mode, two ends of the transmission shaft penetrate into the two first arrangement cavities 17 respectively, the second gear 15 is fixedly sleeved at the left end of the transmission shaft 15, the end portion of the rotating shaft 7 penetrates into the first arrangement cavity 17 far away from the screw rod 9, the first gear 13 is fixedly sleeved at the end portion of the rotating shaft 7 and is meshed with the second gear 15, the top end of the screw rod 9 penetrates into the first arrangement cavity 17 far away from the rotating shaft 7, the third gear 16 is fixedly sleeved at the top end of the screw rod 9, the fourth gear 44 is fixedly sleeved at the right end of the transmission shaft 14 and is meshed with the third gear 16.

When the invention is used, the equipment can be integrally transported to a designated place for use under the support of the universal wheels 3, after the equipment reaches the designated place, the display screen 8 is turned upwards, the display screen 8 rotates to drive the rotating shaft 7 to rotate, the rotating shaft 7 rotates to drive the first gear 13 to rotate, the first gear 13 rotates to drive the second gear 15 meshed with the first gear to rotate, the second gear 15 rotates to drive the transmission shaft 14 to rotate, the transmission shaft 14 rotates to drive the fourth gear 44 to rotate, the fourth gear 44 rotates to drive the third gear 16 to rotate, the third gear 16 rotates to drive the screw rod 9 to rotate, the number of teeth of two groups of matched meshed gears and the pitch of the screw rod 9 can be selected according to the height of the machine body 2 and the size of the player 6 and the position of the player 6 on the machine body 2, and a combination with a larger difference of the number of teeth is selected as far as possible under the condition of meeting the design principle, therefore, under the condition that the first gear 13 rotates a little, the lead screw 9 rotates for a plurality of turns, the slide block 10 is driven to move upwards by matching with the screw pitch selection of the lead screw 9, the folding cloth 12 is driven to move upwards to be folded, based on the motion situation, when the display screen 8 rotates for ninety degrees, the parameter selection of the transmission part meets the condition that the bottom end of the folding cloth 12 is moved to the area above the top end of the player 6, so that the player 6 is exposed, a user can operate the display screen 8 and the player 6 through the control panel 5 without being connected with external display equipment, after the use is finished, the equipment is closed, the display screen 8 is turned downwards, the slide block 10 moves downwards, the folding cloth 12 is extended, the player 6 is covered, the player 6 is protected, and meanwhile, the display screen 8 and the two stop blocks 4 are matched to cover the control panel 5, control panel 5 is protected, through this kind of mode, can realize protection and the use to equipment, need not put into case and bag with it in, it is comparatively convenient to use.

Example 2: the difference is based on example 1; the vertical fixed mounting of surface has place board 18 on base 1, and place board 18 front surface and 2 back fixed connection of organism, the place board 18 back are equipped with the tractive part, and the tractive part includes two otic placodes 19, vaulting pole 20, pull rod 21 and two sets of locking parts, and the horizontal fixed mounting of two otic placodes 19 bilateral symmetry is at place board 18 back, and the horizontal rotation cover of vaulting pole 20 is established in two otic placodes 19, and the fixed cover of pull rod 21 one end is connected on vaulting pole 20.

The locking component comprises a bottom plate 22, two clamping plates 23, two push plates 24, two racks 25, two tension springs 26, a support rod 27 and a gear 28, wherein the bottom plate 22 is horizontally and fixedly arranged on the back surface of the placing plate 18 and is internally provided with a second placing cavity 29, the support rod 27 is horizontally and fixedly arranged at the bottom of the second placing cavity 29, the gear 28 is rotatably sleeved on the support rod 27, the left side surface and the right side surface of the bottom plate 22 are horizontally provided with slide holes 30, the ends, close to each other, of the two slide holes 30 are communicated with the second placing cavity 29, the two push plates 24 are respectively and horizontally and slidably arranged in the two slide holes 30, the two racks 25 are respectively and horizontally and fixedly arranged on the surfaces, close to each other, of the two push plates 24 and are respectively engaged and connected with the gear 28, the two clamping plates 23 are respectively and fixedly arranged at the ends, far away from the clamping plates 23, the two tension springs 26 are respectively and horizontally arranged at the ends, far away from the two push plates 24, and are respectively and fixedly connected with the side walls of the second placing cavity 29, the left side surface and the right side surface of the pull rod 21 are respectively provided with a clamping groove 31, and the upper surface and the lower surface of the pull rod 21 are respectively provided with a guide groove 32 which is inclined in a bilateral symmetry way.

Smooth chamber 33 has been seted up perpendicularly to pull rod 21 inside, and perpendicular slidable mounting has connecting rod 34 in the smooth chamber 33, and the horizontal fixed mounting in one end that organism 2 was kept away from to connecting rod 34 has fagging 35, and the equal horizontal fixed mounting in fagging 35 both ends has telescopic link 36, and fixed surface installs handle 43 before the fagging 35, is equipped with adjusting part in the pull rod 21.

The invention is provided with two ear plates 19 and a stay bar 20, a pull rod 21 can rotate under the support of the stay bar 20 and the ear plates 19, when the pull rod 21 rotates to a vertically upward position, a locking part positioned above can limit and lock the pull rod 21, at the moment, a user can drag equipment through the pull rod 21 to facilitate the movement of the equipment, when the pull rod 21 rotates to a vertically downward position, a locking part positioned below locks the pull rod 21 to support the equipment, when the pull rod 21 contacts with the locking part, two clamping plates 23 contact with two guide grooves 32, the pull rod 21 continues to rotate, under the action of the guide grooves 32, the two clamping plates 23 are mutually far away to drive the two push plates 24 to be mutually far away, the two push plates 24 are mutually far away to respectively stretch two tension springs 26, so that the two tension springs 26 deform, after the two clamping plates 23 are clamped with the two clamping grooves 31, the two tension springs 26 recover to the original length, two cardboard 23 of 24 pulling through two push pedal are close to each other, make two cardboard 23 chucking in two draw-in grooves 31, lock pull rod 21, when treating that locking need be relieved, one of them cardboard 23 of outside pulling, cardboard 23 drives push pedal 24, push pedal 24 drives rack 25, rack 25 drives gear 28, gear 28 drives another rack 25, order about two cardboard 23 and break away from with two draw-in grooves 31 respectively simultaneously, and convenient for operation, when pull rod 21 rotates vertical decurrent position, lengthen two telescopic links 36, at fagging 35, connecting rod 34 and two telescopic link 36's cooperation under, support whole equipment, when pull rod 21 rotates vertical decurrent position, pack up two telescopic links 36, carry out the tractive removal to equipment through handle 43, through this kind of mode, can be convenient transport and lay whole equipment.

Example 3: the difference is based on example 1; the adjusting part comprises a screw 37, a first bevel gear 38, a second bevel gear 39, a connecting shaft 40 and a rotating wheel 41, a third arrangement cavity 42 is formed in the pull rod 21, the screw 37 is vertically rotatably installed in the pull rod 21, two ends of the screw penetrate into the sliding cavity 33 and the third arrangement cavity 42 respectively, the connecting rod 34 is sleeved on the screw 37 in a threaded manner, the first bevel gear 38 is fixedly sleeved at one end of the screw 37 far away from the connecting rod 34, the connecting shaft 40 is horizontally rotatably sleeved in the side wall of the pull rod 21, one end of the connecting shaft penetrates into the third arrangement cavity 42, the second bevel gear 39 is fixedly sleeved at the end of the connecting shaft 40 and is meshed with the first bevel gear 38, and the rotating wheel 41 is fixedly sleeved at the end of the connecting shaft 40 far away from the second bevel gear 39.

The present invention is provided with an adjusting means, when adjusting the overall length of the connecting rod 34 and the pull rod 21, the rotating wheel 41 is rotated, the rotating wheel 41 rotates the connecting shaft 40, the connecting shaft 40 drives the second bevel gear 39 to rotate, the second bevel gear 39 drives the first bevel gear 38 engaged with the second bevel gear to rotate, the first bevel gear 38 rotates to drive the screw rod 37 to rotate, the screw rod 37 rotates to drive the connecting rod 34 to move up and down in the sliding cavity 33, thereby realizing the adjustment of the length of the whole of the pull rod 21 and the connecting rod 34, and when in supporting, the utility model can adjust the length of the pull rod according to the height of the user, the height of the machine body 2 is adjusted, so that a user can conveniently operate the control panel 5, when equipment is pulled, the length is adjusted, the equipment is convenient to pull, and by the way, according to the height of the user, the whole length of the traction part is adjusted, the requirements of different users are met, and the practicability of the device is improved.

It is to be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a case and bag type audio and video sound equipment, includes base (1), organism (2) and a plurality of universal wheel (3), its characterized in that: organism (2) vertical fixation installs at base (1) upper surface, and is a plurality of universal wheel (3) symmetry fixed mounting is in base (1) bottom surface, organism (2) upper surface bilateral symmetry horizontal fixed mounting has two dog (4), organism (2) upper surface fixed mounting has control panel (5), organism (2) front surface inlays and is equipped with player (6), player (6) and control panel (5) electric connection, two rotate through pivot (7) between dog (4) and install display screen (8), display screen (8) are fixed cup joints in pivot (7), and with control panel (5) between electric connection, pivot (7) both ends are rotated respectively and are installed in the one that two dog (4) are close to each other, organism (2) front surface is equipped with the protection part, the protection part includes two lead screws (9), Two sliders (10), diaphragm (11) and folding cloth (12), the spout has all been seted up perpendicularly to the side about organism (2), two lead screw (9) are perpendicular to rotate respectively and are installed in two spouts, two slider (10) slidable mounting is in two spouts respectively, and the screw thread cover is established on two lead screw (9) respectively, diaphragm (11) horizontal fixed mounting is at organism (2) front surface upside, folding cloth (12) top and diaphragm (11) bottom surface fixed connection, folding cloth (12) bottom and two slider (10) upper surface fixed connection, be connected through two sets of transmission parts between pivot (7) and two lead screw (9).

2. A bag-type audio-video sound equipment as set forth in claim 1, characterized in that: the transmission part comprises a first gear (13), a transmission shaft (14), a second gear (15), a third gear (16) and a fourth gear (44), two first arrangement cavities (17) are symmetrically arranged in the stop block (4), the transmission shaft (14) is horizontally and rotatably installed in the stop block (4), two ends of the transmission shaft penetrate into the two first arrangement cavities (17) respectively, the second gear (15) is fixedly sleeved at the left end of the transmission shaft (14), the end part of the rotating shaft (7) penetrates into the first arrangement cavity (17) far away from the screw rod (9), the first gear (13) is fixedly sleeved at the end part of the rotating shaft (7) and is meshed with the second gear (15), the top end of the screw rod (9) penetrates into the first arrangement cavity (17) far away from the rotating shaft (7), the third gear (16) is fixedly sleeved at the top end of the screw rod (9), and the fourth gear (44) is fixedly sleeved at the right end of the transmission shaft (14), and is in meshed connection with a third gear (16).

3. A bag-type audio-video sound equipment as set forth in claim 1, characterized in that: perpendicular to surface fixed mounting has place board (18) on base (1), place board (18) front surface and organism (2) back fixed connection, place board (18) back is equipped with the tractive part, the tractive part includes two otic placodes (19), vaulting pole (20), pull rod (21) and two sets of locking parts, two the horizontal fixed mounting of otic placode (19) bilateral symmetry is at place board (18) back, vaulting pole (20) level is rotated the cover and is established in two otic placodes (19), the fixed cup joint of pull rod (21) one end is on vaulting pole (20).

4. A bag-type audio-video sound equipment according to claim 3, characterized in that: the locking part comprises a bottom plate (22), two clamping plates (23), two push plates (24), two racks (25), two tension springs (26), a support rod (27) and a gear (28), wherein the bottom plate (22) is horizontally and fixedly installed on the back of the placing plate (18), a second placing cavity (29) is formed in the bottom of the bottom plate, the support rod (27) is horizontally and fixedly installed at the bottom of the second placing cavity (29), the gear (28) is rotatably sleeved on the support rod (27), sliding holes (30) are horizontally formed in the left side surface and the right side surface of the bottom plate (22), one ends of the two sliding holes (30) close to each other are communicated with the second placing cavity (29), the two push plates (24) are respectively and horizontally and slidably installed in the two sliding holes (30), the two racks (25) are respectively and horizontally and fixedly installed on one side of the two push plates (24) close to each other and are meshed with the gear (28), two cardboard (23) fixed mounting is respectively in the one end of two push pedal (24) keeping away from each other, two extension spring (26) level respectively is settled and is kept away from the one end of cardboard (23) in two push pedal (24), the both ends of extension spring (26) are settled chamber (29) lateral wall fixed connection with push pedal (24) tip and second respectively, draw-in groove (31) have all been seted up to the side about pull rod (21), equal bilateral symmetry in pull rod (21) upper and lower surface has seted up guide way (32) that are the slope form.

5. A bag-type audio-video sound equipment according to claim 3, characterized in that: smooth chamber (33) have been seted up perpendicularly to pull rod (21) inside, perpendicular slidable mounting has connecting rod (34) in smooth chamber (33), the horizontal fixed mounting of one end that organism (2) were kept away from in connecting rod (34) has fagging (35), the equal horizontal fixed mounting in fagging (35) both ends has telescopic link (36), fixed surface installs handle (43) before fagging (35), be equipped with adjusting part in pull rod (21).

6. A bag-type audio-video sound equipment according to claim 5, characterized in that: the adjusting component comprises a screw rod (37), a first bevel gear (38), a second bevel gear (39), a connecting shaft (40) and a rotating wheel (41), a third accommodating cavity (42) is formed in the pull rod (21), the screw rod (37) is vertically and rotatably arranged in the pull rod (21), two ends of the connecting rod (34) respectively penetrate into the sliding cavity (33) and the third mounting cavity (42), the connecting rod is sleeved on the screw rod (37) in a threaded manner, the first bevel gear (38) is fixedly sleeved at one end of the screw rod (37) far away from the connecting rod (34), the connecting shaft (40) is horizontally and rotatably sleeved in the side wall of the pull rod (21), one end of the second bevel gear (39) penetrates into the third mounting cavity (42) and is fixedly sleeved at the end part of the connecting shaft (40), and the rotating wheel (41) is fixedly sleeved at the end part of the connecting shaft (40) far away from the second bevel gear (39).

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