CN212137928U

CN212137928U - Public address set is used in university's teaching convenient to carry

Info

Publication number: CN212137928U
Application number: CN202020545696.7U
Authority: CN
Inventors: 贾丽红
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-12-11
Anticipated expiration: 2030-04-14

Abstract

The utility model discloses a public address set is used in university's teaching convenient to carry, which comprises a housin, the inner wall of casing has a piece through predetermineeing groove clearance fit, the bottom of casing is equipped with the opening, the front of megaphone is equipped with and carries the lifting unit spare. This public address set is used in university teaching convenient to carry, through the casing, the megaphone, the opening with carry the cooperation of carrying the subassembly, make the device when using, the accessible shell protects it, and can promote the comfort that user's hand was carried when carrying greatly, cushion when the direct atress of hand, through the casing, the megaphone, the opening with the cooperation of the subassembly that opens and shuts, make the device when using, the closure of accessible baffle plays dustproof effect to megaphone broadcast department, and then reduce the loss of dust to sound, can gather together the direction to the sound wave when opening simultaneously, and then reduce sound and consume when propagating, promote the sound propagation effect, enlarge sound propagation range, and then promote teaching quality.

Description

Public address set is used in university's teaching convenient to carry

Technical Field

The utility model relates to a public address set technical field is used in college teaching convenient to carry specifically is a public address set is used in college teaching convenient to carry.

Background

The power amplifier is called power amplifier for short, and is generally referred to as the most basic equipment in a sound system, commonly called loudspeaker, and is widely applied to teaching, and the power amplifier is used for amplifying weak electric signals from a signal source (from a sound console in a professional sound system) to drive a loudspeaker to make sound, and can also be referred to as other equipment for amplifying power.

Portable's public address set for university teaching among the prior art, when using, can't protect it, easily collide because of misoperation and external object, and the comfort that user's hand was carried when the removal is poor, can't cushion when the direct atress of hand, reduce the practicality, and the too much easy increase of loudspeaker broadcast department dust is to the loss of sound, can't gather together the direction to the sound wave simultaneously, it is big to make sound consume when propagating, reduce the sound propagation effect, reduce the sound propagation scope, and then reduce the teaching quality, on this basis, can't carry out forced air cooling heat dissipation to the megaphone, make the life of megaphone short, and be not convenient for deashing and maintenance, can't guarantee the radiating effect, and then inconvenient people use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a public address set is used in university's teaching convenient to carry to propose a public address set is used in university's teaching convenient to carry among the prior art in solving above-mentioned background, when using, can't protect it, because of improper operation bumps with external object easily, and the comfort of carrying is poor for user's hand when the removal is carried, can't cushion when the direct atress of hand, reduces the problem of practicality.

In order to achieve the above object, the utility model provides a following technical scheme: a portable public address device for university teaching comprises a shell, wherein a support block is arranged on the inner wall of the shell in a clearance fit mode through a preset groove, the inner end of the support block is fixedly connected with the outer wall of a loudspeaker, the outer end of the support block is fixedly connected with the outer end of the shell through a bolt, an opening is formed in the bottom of the shell, and a lifting assembly is arranged on the front face of the loudspeaker;

the lifting assembly comprises a bump, a handle, a round rod, a through groove, a top plate, a slot and a first compression spring;

the rear end face of lug and the positive left and right sides fixed connection of megaphone, the inner clearance fit of lug has the handle, the outer end rigid coupling of handle has the round bar, the outer wall of round bar is through leading to groove and lug clearance fit, the inner of round bar supports tightly there is the roof, the inner clearance fit of roof has the slot, the inner of slot and the inner fixed connection who leads to the groove, the inner of slot is through the inner fixed connection of first compression spring with the roof.

Preferably, the shape of the convex block is matched with the shape of the contact surface of the handle.

Preferably, the position of the opening corresponds to the playing position of the loudspeaker.

Preferably, the bottom of the shell is provided with an opening and closing assembly;

the opening and closing assembly comprises a baffle plate, a rotating rod, a torsion spring, teeth, a clamping pin, a sliding block, a sliding groove and a second compression spring;

the outer end of baffle is passed through the bull stick and is connected, both sides with the rotation of open-ended inner wall left and right sides the inner of baffle is laminated mutually, torque spring has been cup jointed to the outer wall of bull stick, torque spring's inside and outside both ends respectively with baffle and casing looks joint, the bottom outside circular arc department rigid coupling of baffle has tooth, tooth's outer end joint has the bayonet lock, the top outside rigid coupling of bayonet lock has the slider, the bottom clearance fit of spout and casing is passed through to the outer wall of slider, the inner wall outer end fixed connection of second compression spring and spout is passed through to the outer end of slider.

Preferably, the baffles are symmetrically distributed about the opening axis.

Preferably, the top of the shell is provided with a heat dissipation assembly;

the heat dissipation assembly comprises a circular ring, a fan, a dust screen, a support plate and an arc groove;

the inner wall rigid coupling of ring has the fan, the inner wall top rigid coupling of ring has the dust screen, the equal rigid coupling in both ends has the extension board about the ring, the outer wall clearance fit of extension board has the arc groove, the arc groove processing is in the inner wall of casing top default round hole.

Compared with the prior art, the beneficial effects of the utility model are that: this public address set for university's teaching convenient to carry structure scientific and reasonable, convenience safe in utilization:

through casing, megaphone, prop up piece, bolt, opening and the cooperation of carrying the subassembly for the device is when using, and the accessible shell protects it, avoids colliding with external object because of the misoperation, and can promote the comfort that user's hand was carried when removing greatly, cushions when the direct atress of hand, and then promotes the practicality greatly.

Through casing, megaphone, prop up piece, bolt, opening and the cooperation of subassembly that opens and shuts for the device is when using, and the closure of accessible baffle plays dustproof effect to megaphone broadcast department, and then reduces the dust to the loss of sound, can gather together the direction to the sound wave when opening simultaneously, and then reduces sound and consume when propagating, promotes the sound propagation effect, enlarges the sound propagation range, and then promotes the teaching quality.

Through casing, megaphone, a piece, bolt, opening and radiator unit's cooperation for the device is when using, and the accessible fan carries out the forced air cooling heat dissipation to the megaphone, and then prolongs the life of megaphone, and the fan can be dismantled wantonly simultaneously, and then is convenient for carry out the deashing and overhaul to fan and dust screen, guarantees the radiating effect, and then makes things convenient for people to use.

Drawings

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

FIG. 2 is a schematic view of the structure of the projection, the handle and the round bar of FIG. 1;

FIG. 3 is a schematic view of the structure of the damper, the rotary rod and the torsion spring shown in FIG. 1;

fig. 4 is a schematic top view of the fan, the dust screen and the ring in fig. 1.

In the figure: 1. the loudspeaker comprises a shell, 2, a loudspeaker, 3, a support block, 4, a bolt, 5, an opening, 6, a lifting assembly, 601, a bump, 602, a handle, 603, a round rod, 604, a through groove, 605, a top plate, 606, a slot, 607, a first compression spring, 7, an opening and closing assembly, 701, a baffle plate, 702, a rotating rod, 703, a torsion spring, 704, teeth, 705, a bayonet lock, 706, a sliding block, 707, a sliding groove, 708, a second compression spring, 8, a heat dissipation assembly, 801, a circular ring, 802, a fan, 803, a dust screen, 804, a support plate, 805 and an arc groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a public address set is used in university teaching convenient to carry, which comprises a housin 1, the inner wall of casing 1 has a piece 3 through predetermineeing groove clearance fit, a piece 3 is the matrix and arranges, the inner of a piece 2 and loudspeaker 2's outer wall fixed connection, bolt 4 and casing 1's outer end fixed connection is passed through to a piece 3's outer end, bolt 4 is through a piece 3 and then plays the fixed action to loudspeaker 2 of screw in, the bottom of casing 1 is equipped with opening 5, opening 5's position is corresponding with loudspeaker 2's broadcast department, make loudspeaker 2's playback state normal, loudspeaker 2's front is equipped with and carries and draws subassembly 6.

The lifting assembly 6 comprises a bump 601, a handle 602, a round bar 603, a through groove 604, a top plate 605, a slot 606 and a first compression spring 607, the rear end face of the bump 601 is fixedly connected with the left side and the right side of the front face of the loudspeaker 2, the handle 602 is in clearance fit with the inner end of the bump 601, the handle 602 is made of a hard plastic wrapping silica gel layer, the shape of the contact surface of the bump 601 is matched with that of the handle 602, the handle 60 is pressed downwards to be flush with the top of the bump 601, the outer end of the handle 602 is fixedly connected with the round bar 603, the outer wall of the round bar 603 is in clearance fit with the bump 601 through the through groove 604, the through groove 604 plays a guiding role for the round bar 603, the inner end of the round bar 603 is tightly pressed against the top plate 605, the inner end of the top plate 605 is in clearance fit with the slot 606, the inner end of the slot 606 is fixedly connected with the inner end of, the first compression spring 607 imparts an outward force to the top plate 605.

The bottom of the shell 1 is provided with an opening and closing assembly 7, the opening and closing assembly 7 comprises a baffle 701, a rotating rod 702, a torsion spring 703, teeth 704, clamping pins 705, a sliding block 706, a sliding groove 707 and a second compression spring 708, the outer end of the baffle 701 is rotatably connected with the left side and the right side of the inner wall of the opening 5 through the rotating rod 702, the rotating rod 702 enables the baffle 701 to rotate when stressed, the inner ends of the baffle 701 at the two sides are attached, the baffle 701 is axially and symmetrically distributed around the opening 5, the design can enable the baffle 701 to play a dustproof role at the playing part of the loudspeaker 2 when closed, the outer wall of the rotating rod 702 is sleeved with the torsion spring 703, the inner end and the outer end of the torsion spring 703 are respectively clamped with the baffle 701 and the shell 1, the torsion spring 703 provides inward force to the baffle 701, the arc 704 at the outer side of the bottom of the baffle 701 is fixedly connected with the teeth, the outer end of the clamping pins 705 is clamped with, but can not rotate reversely, a sliding block 706 is fixedly connected to the outer side of the top of the bayonet 705, the outer wall of the sliding block 706 is in clearance fit with the bottom of the shell 1 through a sliding groove 707, the sliding groove 707 guides the sliding block 706, the outer end of the sliding block 706 is fixedly connected with the outer end of the inner wall of the sliding groove 707 through a second compression spring 708, and the second compression spring 708 gives an inward force to the sliding block 706.

The top of casing 1 is equipped with 8 radiator unit 8 of radiator unit and includes ring 801, fan 802, dust screen 803, extension board 804 and arc groove 805, the inner wall rigid coupling of ring 801 has fan 802, fan 802 is used for carrying out the forced air cooling heat dissipation to megaphone 2, the inner wall top rigid coupling of ring 801 has dust screen 803, dust screen 803 is stainless steel hundred mesh filter screens, the equal rigid coupling in both ends has extension board 804 about ring 801, the outer wall rigid coupling of extension board 804 has the rubber pad, a friction for increase and arc groove 805 inner wall, and then make ring 801 fixed more stable, the outer wall clearance fit of extension board 804 has arc groove 805, arc groove 805 is processed in the inner wall of the preset round hole in casing 1 top.

In this embodiment, when the portable audio amplifier for university teaching is used, the user can hold the handle 602 by the arrangement of the handle 602, the handle 603 is in clearance fit with the through groove 604, and the first compression spring 607 gives an outward force to the top plate 605, so that when the device is lifted, the first compression spring 607 can be contracted, and further the user can buffer when the hand is directly stressed, thereby improving the holding comfort, and simultaneously when the device is not used, the handle 602 can be embedded into the space between the two bumps 601 by pressing the handle 602, thereby saving space, being more convenient to carry, the playing position of the audio amplifier 2 can be dustproof by the arrangement of the baffle 701, when the audio amplifier is needed to be used, the baffle 701 can be shifted outwards against the resilience of the torsion spring 703, the baffle 701 can be shifted by the arrangement of the inclined plane of the bayonet 705, and the teeth 704 are connected with the bayonet 705 in a clamping manner, so that the baffle 701 can be fixed after the angle is adjusted, and then reduce the sound consumption when the sound wave transmission, play the guide effect simultaneously, guarantee the effect of sound propagation, simultaneously, can dispel the heat to megaphone 2 through fan 802, promote its life, through the clearance fit of extension board 804 with arc groove 805 for ring 801 can drive fan 802 and dismantle, and then is convenient for carry out the deashing and overhaul to fan 802, and then guarantees the radiating effect, makes things convenient for people to use.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

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

1. The utility model provides a public address set is used in university's teaching convenient to carry, includes casing (1), its characterized in that: a support block (3) is arranged on the inner wall of the shell (1) in a clearance fit mode through a preset groove, the inner end of the support block (3) is fixedly connected with the outer wall of the loudspeaker (2), the outer end of the support block (3) is fixedly connected with the outer end of the shell (1) through a bolt (4), an opening (5) is formed in the bottom of the shell (1), and a lifting assembly (6) is arranged on the front face of the loudspeaker (2);

the lifting assembly (6) comprises a lug (601), a handle (602), a round rod (603), a through groove (604), a top plate (605), a slot (606) and a first compression spring (607);

the rear end face of the lug (601) is fixedly connected with the left side and the right side of the front face of the loudspeaker (2), a handle (602) is in clearance fit with the inner end of the lug (601), a round rod (603) is fixedly connected with the outer end of the handle (602), the outer wall of the round rod (603) is in clearance fit with the lug (601) through a through groove (604), a top plate (605) is tightly abutted to the inner end of the round rod (603), a slot (606) is in clearance fit with the inner end of the top plate (605), the inner end of the slot (606) is fixedly connected with the inner end of the through groove (604), and the inner end of the slot (606) is fixedly connected with the inner end of the top plate (605) through a first compression spring (607).

2. The portable university teaching use loudspeaker device as set forth in claim 1, wherein: the shape of the convex block (601) is matched with the shape of the contact surface of the handle (602).

3. The portable university teaching use loudspeaker device as set forth in claim 1, wherein: the position of the opening (5) corresponds to the playing position of the loudspeaker (2).

4. The portable university teaching use loudspeaker device as set forth in claim 1, wherein: the bottom of the shell (1) is provided with an opening and closing assembly (7);

the opening and closing assembly (7) comprises a baffle plate (701), a rotating rod (702), a torsion spring (703), teeth (704), a clamping pin (705), a sliding block (706), a sliding groove (707) and a second compression spring (708);

the outer end of baffle (701) is passed through bull stick (702) and is connected, both sides are rotated with the inner wall left and right sides of opening (5) the inner of baffle (701) is laminated mutually, torsion spring (703) have been cup jointed to the outer wall of bull stick (702), the inside and outside both ends of torsion spring (703) respectively with baffle (701) and casing (1) looks joint, the bottom outside circular arc department rigid coupling of baffle (701) has tooth (704), the outer end joint of tooth (704) has bayonet lock (705), the top outside rigid coupling of bayonet lock (705) has slider (706), the outer wall of slider (706) passes through the bottom clearance fit of spout (707) and casing (1), the outer end of slider (706) passes through the inner wall outer end fixed connection of second compression spring (708) and spout (707).

5. The portable university teaching microphone set forth in claim 4 wherein: the baffles (701) are distributed axisymmetrically with respect to the opening (5).

6. The portable university teaching use loudspeaker device as set forth in claim 1, wherein: the top of the shell (1) is provided with a heat dissipation assembly (8);

the heat dissipation assembly (8) comprises a circular ring (801), a fan (802), a dust screen (803), a support plate (804) and an arc groove (805);

the inner wall rigid coupling of ring (801) has fan (802), the inner wall top rigid coupling of ring (801) has dust screen (803), the equal rigid coupling in both ends has extension board (804) about ring (801), the outer wall clearance fit of extension board (804) has arc groove (805), arc groove (805) process in the inner wall of the preset round hole in casing (1) top.