Sound amplifying device for audio playing

Abstract

The utility model relates to the technical field of sound amplification devices, and discloses a sound amplification device for audio playing, which comprises a sound box body, an adjustable pull rod, a joint waterproof cover and a roller rod piece, and is characterized in that one end of the sound box body, which is correspondingly connected with the adjustable pull rod, is provided with a contraction box; a guide rod and an adjusting rod which slide in the contraction box are arranged at the position, correspondingly connected with the loudspeaker box body, of the adjusting pull rod, a matching block connected with the connector waterproof cover in a matched mode is arranged at the middle position of the end, correspondingly connected with the adjusting pull rod, of the loudspeaker box body, and two first sliding grooves distributed in an axial symmetry mode are formed in the two side edges of the matching block. The end, correspondingly connected with the loudspeaker box body, of the connector waterproof cover is provided with a guide block in matched sliding connection with the first sliding groove, the two sides of the end, correspondingly connected with the adjustable pull rod, of the loudspeaker box body are provided with roller rod pieces, the carrying difficulty of the large sound amplification device is lowered, and the protection effect on a wiring port in rainy days is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sound amplification devices, in particular to a sound amplification device for audio playback. Background Art

[0002] The main function of a sound amplification device is to amplify the input sound so that the sound can be transmitted farther. Common sound amplification devices include handheld speakers, small bees used for teaching, and speakers. Sound amplification devices can be divided into many types according to different usage environments, different venues, and different user groups.

[0003] During large-scale outdoor concerts or performances, the amplifying devices for audio playback are often large speakers, which are often huge in size and relatively heavy, making them difficult to carry. Even with some external carts, the safety of transportation cannot be well ensured. In addition, rainy weather cannot be ruled out outdoors. Traditional large-scale amplifying device speakers cannot ensure the waterproof safety of the wiring ports. For this reason, we propose a sound amplifying device for audio playback. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a sound amplification device for audio playback, which solves the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sound amplification device for audio playback, comprising a speaker body, an adjustable pull rod, a joint waterproof cover and a roller rod, the speaker body is provided with a retractable box at one end corresponding to the connected adjustable pull rod, and the position of the adjustable pull rod corresponding to the connected speaker body is provided with a guide rod and an adjusting rod sliding inside the retractable box, a matching block is provided at the middle position of one end of the speaker body corresponding to the connected adjustable pull rod, and two slide grooves symmetrically distributed on both sides of the matching block are provided, the joint waterproof cover is provided with a guide block slidably connected to the slide groove at one end corresponding to the connected speaker body, and roller rods are provided on both sides of one end of the speaker body corresponding to the connected adjustable pull rod, which is away from the retractable box.

[0006] Preferably, the speaker body is provided with a placement groove at one end corresponding to the roller rod, and a positioning block is provided at the end of the placement groove away from the shrinkage box, a rotation hole is provided in the middle position of the placement groove, and the speaker body is provided with box feet at the four corners of the end perpendicular to the roller rod.

[0007] Preferably, an adjustment hole and two guide holes are provided inside the shrink box, and the guide holes are axially symmetrically distributed on both sides of the adjustment hole, and a group of fixing holes equidistantly distributed are provided on the outer surface of the adjustment hole.

[0008] Preferably, the adjustable pull rod is axially symmetric as a whole. At one end of the adjustable pull rod corresponding to the connection with the speaker body, there are a guide rod and an adjustment rod that are respectively slidably connected with the internal guide holes and adjustment holes of the contraction box. At the end of the adjustable pull rod away from the contraction box, there is a connecting plate. At one end of the connecting plate away from the adjustment rod, there is a handle. And at the end of the adjustment rod away from the connecting plate, there is a second limiting block, and a semi-circular spring button that is connected with the fixing hole is arranged on the second limiting block.

[0009] Preferably, at one end of the joint waterproof cover corresponding to the connection with the fitting block, there is a guide block in an inverted U shape, and there are guide blocks on both sides of the fitting edge. The guide block is provided with a first limiting block corresponding to the open end of the U shape.

[0010] Preferably, the main body of the roller rod member is a support rod with a square at one end and a semi-cylindrical shape at the other end. At the end of the support rod corresponding to the square, there is a roller. At the side perpendicular to the semi-cylindrical end and the square end of the support rod, there is a rotating rod. And at the end of the speaker body away from the support rod, there is a connecting plate. A spring sleeved on the rotating rod is arranged between the connecting plate and the support rod, and one end of the spring away from the support rod is welded to the connecting plate.

[0011] Compared with the prior art, the present utility model provides a sound amplification device for audio playback, having the following beneficial effects:

[0012] 1. For the sound amplification device for audio playback, by using a rotatable roller rod member and an adjustable pull rod whose length can be freely extended and retracted according to the transporter, some large sound amplification device speakers can be well transported to the designated location, reducing the potential safety hazards brought by using a trolley during the handling of large traditional speakers, reducing the probability of accidents, and increasing the usage range of large sound amplification device speakers.

[0013] 2. For the sound amplification device for audio playback, by using a joint waterproof cover that can slide freely up and down, the wire enters through the open end at its bottom and is connected to the wire interface of the sound amplification device speaker, playing a good protective role for the wire interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the sound amplification device for audio playback of the present utility model;

[0015] Figure 2 is a schematic cross-sectional view of the sound amplification device for audio playback of the present utility model;

[0016] Figure 3 is a schematic diagram of the speaker body of the present utility model;

[0017] Figure 4 is a schematic diagram of the roller rod member of the present utility model;

[0018] Figure 5This is a schematic diagram of the waterproof cover of the joint of the utility model;

[0019] Figure 6 This is a schematic diagram of the adjustable pull rod of the utility model.

[0020] In the figure: 1. speaker body; 2. adjustable pull rod; 3. joint waterproof cover; 4. roller rod; 5. retractable box; 6. guide hole; 7. adjustment hole; 8. fixing hole; 9. matching block; 10. slide groove 1; 11. placement groove; 12. rotation hole; 13. positioning block; 14. box foot; 15. support rod; 16. rotation rod; 17. spring; 18. matching edge; 19. guide block; 20. limit block 1; 21. handle; 22. connecting plate; 23. guide rod; 24. adjustment rod; 25. limit block 2; 26. semicircular spring button. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-6 A sound amplification device for audio playback includes a speaker body 1, an adjustable pull rod 2, a joint waterproof cover 3 and a roller rod 4, the speaker body 1 is provided with a shrink box 5 at one end corresponding to the connected adjustable pull rod 2, and the position of the adjustable pull rod 2 corresponding to the connected speaker body 1 is provided with a guide rod 23 and an adjusting rod 24 sliding inside the shrink box 5, the speaker body 1 is provided with a matching block 9 connected to the joint waterproof cover 3 at the middle position of one end corresponding to the connected adjustable pull rod 2, and two slide grooves 10 symmetrically distributed on both sides of the matching block 9, the joint waterproof cover 3 is provided with a guide block 19 slidably connected to the slide groove 10 at one end corresponding to the connected speaker body 1, and roller rods 4 are provided on both sides of one end of the speaker body 1 corresponding to the connected adjustable pull rod 2 that faces away from the shrink box 5.

[0023] Furthermore, a placement groove 11 is provided at one end of the speaker body 1 corresponding to the roller rod 4, and a positioning block 13 is provided at the end of the placement groove 11 away from the shrinkage box 5, a rotation hole 12 is provided in the middle position of the placement groove 11, and box feet 14 are provided at the four corners of the end of the speaker body 1 corresponding to the roller rod 4. The positioning block 13 fixes the roller rod 4 to ensure the safety of the speaker body 1 during transportation.

[0024] Furthermore, an adjustment hole 7 and two guiding holes 6 are provided inside the shrink box 5, and the guiding holes 6 are symmetrically distributed on both sides of the adjustment hole 7. A set of fixing holes 8 are equidistantly distributed on the outer surface of the adjustment hole 7.

[0025] Furthermore, the adjustable pull rod 2 is of an overall axisymmetric structure. At one end of the adjustable pull rod 2 corresponding to the connection with the speaker body 1, there are a guiding rod 23 and an adjusting rod 24 which are respectively connected with the guiding hole 6 and the adjustment hole 7 inside the shrink box 5 in a sliding fit manner. At the end of the adjustable pull rod 2 away from the shrink box 5, there is a connecting plate 22. At one end of the connecting plate 22 away from the adjusting rod 24, there is a handle 21. At the end of the adjusting rod 24 away from the connecting plate 22, there is a second limiting block 25. On the second limiting block 25, there is a semi-circular spring button 26 which is connected with the fixing hole 8 in a matching manner. Since the speaker body 1 is too large, using only one 24 may not be able to bear its weight. Therefore, while playing a guiding role, the guiding rod 23 also plays a supporting role during the handling process, improving the safety during the handling process.

[0026] Furthermore, at one end of the joint waterproof cover 3 corresponding to the connection with the fitting block 9, there is a U-shaped guiding block 19. And guiding blocks 19 are provided on both sides of the fitting edge 18. At the U-shaped opening end of the guiding block 19, there is a first limiting block 20. The first limiting block 20 can prevent the joint waterproof cover 3 from falling off during the sliding process.

[0027] Furthermore, the main body of the roller rod 4 is a support rod 15 with a square at one end and a semi-cylindrical shape at the other end. At the end of the support rod 15 corresponding to the square, there is a roller. At the side of the support rod 15 corresponding to the semi-cylindrical end and perpendicular to the square end, there is a rotating rod 16. And at one end of the speaker body 1 away from the support rod 15, there is a connecting plate. Between this connecting plate and the support rod 15, there is a spring 17 sleeved on the rotating rod 16. One end of the spring 17 away from the support rod 15 is welded to the connecting plate. The spring 17 is always in a compressed state to ensure safety during the handling process.

[0028] Working principle: Install the loudspeaker device for audio playback correctly according to the illustration. During outdoor large-scale concerts or large-scale performances, when the speakers used as the loudspeaker device cannot be sent to a higher place, some large loudspeaker devices are usually placed at the four corners of the venue. At this time, just lift one end of the speaker body 1, and the staff can pull out the roller rod 4 to both ends, rotate it 180 degrees and let it go. Due to the resilience of the spring 17 of the roller rod 4, the roller rod 4 can be clamped at the bottom of the roller rod 4. At this time, the rollers of the roller rod 4 are grounded. Pull out the adjustable pull rod 2 inside the contraction box 5 on the back of the speaker body 1. The length is adapted by the semi-circular spring button 26 on the adjustable pull rod 2 and the fixing hole 8 on the surface of the contraction box 5, so as to straighten the large speaker to the designated place well. When it arrives, then rotate the roller rod 4 back. The joint waterproof cover 3 on the back of the speaker body 1 can prevent the connector of the loudspeaker device from getting water and being damaged on rainy days.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sound amplification device for audio playback, comprising a sound box body (1), an adjustable pull rod (2), a joint waterproof cover (3) and a roller rod (4), characterized in that: The speaker body (1) is provided with a retractable box (5) at one end corresponding to the connection with the adjustable pull rod (2), and a guide rod (23) and an adjusting rod (24) sliding inside the retractable box (5) are provided at the position where the adjustable pull rod (2) is connected to the speaker body (1). A matching block (9) is provided at the middle position of one end corresponding to the connection with the adjustable pull rod (2) for matching with the joint waterproof cover (3), and two sliding grooves (10) are provided on both sides of the matching block (9) in an axially symmetrical manner. The joint waterproof cover (3) is provided with a guide block (19) slidably connected to the sliding groove (10) at one end corresponding to the connection with the speaker body (1), and roller rods (4) are provided on both sides of one end face of the speaker body (1) corresponding to the connection with the adjustable pull rod (2) facing away from the retractable box (5).

2. The sound amplification device for audio playback according to claim 1, characterized in that: The speaker body (1) is provided with a placement groove (11) at one end corresponding to the roller rod (4), and a positioning block (13) is provided at the end of the placement groove (11) facing away from the shrink box (5), a rotation hole (12) is provided in the middle of the placement groove (11), and box feet (14) are provided at four corners of the end of the speaker body (1) corresponding to the roller rod (4).

3. The sound amplification device for audio playback according to claim 2, characterized in that: The shrink box (5) is provided with an adjustment hole (7) and two guide holes (6) inside, and the guide holes (6) are axially symmetrically distributed on both sides of the adjustment hole (7), and a group of fixing holes (8) distributed at equal intervals are opened on the outer surface of the adjustment hole (7).

4. The sound amplification device for audio playback according to claim 2, characterized in that: The adjustable pull rod (2) is of an axisymmetric structure as a whole. The end of the adjustable pull rod (2) corresponding to the speaker body (1) is provided with a guide rod (23) and an adjustment rod (24) which are respectively slidably connected to the guide hole (6) and the adjustment hole (7) inside the shrinkage box (5). The end of the adjustable pull rod (2) facing away from the shrinkage box (5) is provided with a connecting plate (22). The end of the connecting plate (22) facing away from the adjustment rod (24) is provided with a handle (21). The end of the adjustment rod (24) facing away from the connecting plate (22) is provided with a second limit block (25). The second limit block (25) is provided with a semicircular spring button (26) which is connected to the fixing hole (8).

5. The sound amplification device for audio playback according to claim 1, characterized in that: An inverted U-shaped guide block (19) is provided at one end of the joint waterproof cover (3) corresponding to the connection matching block (9), and guide blocks (19) are provided on both sides of the matching edge (18), and a limiting block (20) is provided at the U-shaped opening end of the guide block (19).

6. The sound amplification device for audio playback according to claim 2, characterized in that: The main body of the roller rod (4) is a support rod (15) having two ends which are respectively square and semi-cylindrical. A roller is provided at one end of the support rod (15) corresponding to the square. A rotating rod (16) is provided at the side of the support rod (15) which is perpendicular to the semi-cylindrical end and the square end. A connecting plate is provided at one end of the speaker body (1) which is away from the support rod (15). A spring (17) which is sleeved on the rotating rod (16) is provided between the connecting plate and the support rod (15). One end of the spring (17) which is away from the support rod (15) is welded to the connecting plate.

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