Loudspeaker

Abstract

The utility model provides a loudspeaker, which belongs to the technical field of electroacoustic transducers and comprises a cylindrical shell, an assembling plate, an annular mounting seat and a piezoelectric buzzer. The front end of the cylindrical shell is a sound transmission port, and the rear end of the cylindrical shell is of an opening structure; the assembling plate is installed in the cylindrical shell through the rapid fixing assembly, and the assembling plate is arranged close to the rear end of the cylindrical shell. The annular mounting seat is fixedly mounted on one side surface, facing the front end of the cylindrical shell, of the assembling plate; the piezoelectric buzzer is arranged in the cylindrical shell and fixedly installed on the end face, back to the assembling plate, of the annular installation base. According to the loudspeaker provided by the utility model, the assembling plate is arranged in the cylindrical shell through the rapid fixing assembly, and the piezoelectric buzzer is arranged on the assembling plate through the annular mounting seat, so that the loudspeaker is relatively convenient to assemble under the action of the rapid fixing assembly, the assembling efficiency can be greatly improved, and meanwhile, the later disassembly, assembly and maintenance are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a speaker. Background Art

[0002] Piezoelectric buzzer is an electro-acoustic conversion device. The piezoelectric material is pasted on a metal sheet. When a voltage is applied across the piezoelectric material and the metal sheet, the piezoelectric buzzer will produce mechanical deformation and make a sound due to the piezoelectric effect.

[0003] The Chinese patent with the current publication number CN207718798U discloses a piezoelectric buzzer, including a piezoelectric buzzer plate, a first diaphragm with a hollow truncated cone structure and two openings at the bottom; wherein the opening edge portion with a relatively small diameter on the first diaphragm is fixed to the periphery of the center point on the piezoelectric buzzer plate. It solves the technical problem of "improving the ordinary voice pronunciation effect of the piezoelectric buzzer" and has the advantage of good ordinary voice pronunciation effect.

[0004] Although the above-mentioned piezoelectric buzzer solves the corresponding technical problem, the above-mentioned piezoelectric buzzer needs to be additionally designed with a mounting structure when assembled into a housing, which causes inconvenience in assembly, affects assembly efficiency, and is not convenient for later disassembly and maintenance. Utility Model Content

[0005] The utility model aims to solve the problems raised in the background technology and provides a speaker which is convenient to assemble, can greatly improve the assembly efficiency, and is convenient for later disassembly and maintenance.

[0006] The specific technical solutions are as follows:

[0007] A speaker, comprising:

[0008] A cylindrical shell, wherein the front end of the cylindrical shell is a sound transmission port, and the rear end of the cylindrical shell is an open structure;

[0009] A mounting plate, the mounting plate being mounted inside the cylindrical housing through a quick fixing assembly, and the mounting plate being disposed close to the rear end of the cylindrical housing;

[0010] An annular mounting seat, the annular mounting seat is fixedly mounted on a side surface of the mounting plate facing the front end of the cylindrical housing;

[0011] A piezoelectric buzzer is arranged inside the cylindrical shell, and the piezoelectric buzzer is fixedly mounted on an end surface of the annular mounting seat facing away from the mounting plate.

[0012] As a preferred solution of the utility model, the quick fixing assembly includes a threaded rod, a circular plate and at least three groups of locking parts. The threaded rod is screwed at the center position of the mounting plate. The circular plate is fixedly mounted on the end of the threaded rod facing away from the piezoelectric buzzer, and the circular plate is coaxially arranged with the threaded rod. The circumferential surface of the circular plate is provided with eccentric grooves whose number is the same as the number of the locking part groups. The locking parts are all mounted on the side surface of the mounting plate facing away from the annular mounting seat, and the locking parts can be pressed against the inner wall of the cylindrical shell under the drive of the eccentric grooves.

[0013] As a preferred solution of the utility model, at least three groups of locking members are arranged at equal angles in an annular direction around the circular plate, and each group of locking members includes a guide sleeve, a slide rod and a guide slider, the guide sleeve is fixedly mounted on a side surface of the mounting plate facing away from the annular mounting seat, the slide rod slides through the guide sleeve, the guide slider is fixedly mounted on an end of the slide rod close to the circular plate, and a side surface of the guide slider away from the slide rod slides in contact with the bottom of the eccentric groove, and an end of the slide rod away from the guide slider can be pressed against the inner wall of the cylindrical shell under the drive of the eccentric groove.

[0014] As a preferred solution of the utility model, a rubber block is fixedly mounted on one end of the slide rod away from the guide slide block, and the rubber block can be pressed tightly against the inner wall of the cylindrical shell under the drive of the eccentric groove.

[0015] As a preferred solution of the utility model, the rubber block and the side of the guide sliding block facing the annular mounting seat are both slidably fitted with the side of the mounting plate facing away from the annular mounting seat.

[0016] As a preferred solution of the utility model, a spring is sleeved on the slide rod, and two ends of the spring are respectively against the guide sleeve and the guide slide block.

[0017] As a preferred solution of the utility model, a handle is fixedly installed on the side surface of the circular plate facing away from the threaded rod, and a limit ring is threadedly sleeved on one end of the threaded rod away from the circular plate. When the locking piece and the inner wall of the cylindrical shell are in a tight state, the circular plate and the mounting plate are tight.

[0018] As a preferred solution of the utility model, a bowl-shaped sound amplifying cover is fixedly installed on one side surface of the mounting plate facing the front end of the cylindrical shell, the large end of the bowl-shaped sound amplifying cover is arranged toward the piezoelectric buzzer, and the large end edge of the bowl-shaped sound amplifying cover is sealingly connected to the inner wall of the cylindrical shell.

[0019] As a preferred solution of the utility model, a mesh cover for protecting the piezoelectric buzzer is fixedly installed in the sound transmission port at the front end of the cylindrical shell.

[0020] As a preferred solution of the utility model, a mounting plate is fixedly installed on the rear end of the cylindrical shell, a through hole matching the cylindrical shell is provided at the center of the mounting plate, and a mounting ear is fixedly installed on the side of the mounting plate, and the mounting ear has a mounting hole.

[0021] As a preferred solution of the utility model, a circuit board is fixedly mounted on the inner side of the annular mounting seat, and the circuit board has a signal source and a power amplifier circuit. The signal source is electrically connected to the piezoelectric buzzer through the power amplifier circuit.

[0022] As a preferred solution of the utility model, a threading hole is provided on the mounting plate.

[0023] The utility model has the following beneficial effects:

[0024] The speaker provided by the utility model is mainly composed of a cylindrical shell, a mounting plate, an annular mounting seat and a piezoelectric buzzer. The mounting plate is installed inside the cylindrical shell through a quick fixing component, and the piezoelectric buzzer is installed on the mounting plate through the annular mounting seat. The quick fixing component makes the speaker easier to assemble, greatly improves assembly efficiency, and is convenient for later disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a speaker provided in an embodiment of the utility model;

[0026] Figure 2 A schematic structural diagram of a loudspeaker from another perspective provided by an embodiment of the utility model;

[0027] Figure 3 A schematic cross-sectional view of a speaker provided in an embodiment of the utility model;

[0028] Figure 4 A schematic diagram of a partial structure of a speaker provided in an embodiment of the utility model;

[0029] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 6 A schematic diagram of a partial explosion structure of a speaker provided in an embodiment of the utility model;

[0031] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0032] In the attached figure:

[0033] 1. Cylindrical shell;

[0034] 2. Mounting plate; 201. Mounting ear;

[0035] 3. Mounting plate;

[0036] 4. Quick fixing assembly; 41. Round plate; 42. Eccentric groove; 43. Handle; 44. Threaded rod; 45. Limiting ring; 46. Locking piece; 461. Guide slider; 462. Spring; 463. Guide sleeve; 464. Sliding rod; 465. Rubber block;

[0037] 5. Mesh cover;

[0038] 6. Piezoelectric buzzer;

[0039] 7. Bowl-shaped sound amplification cover;

[0040] 8. Ring mounting seat; 9. Circuit board; 10. Threading hole. DETAILED DESCRIPTION

[0041] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0042] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0043] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0044] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Example

[0046] The speaker provided in this embodiment is as follows Figure 1-Figure 7 As shown, it includes: a cylindrical housing 1, a mounting plate 3, an annular mounting seat 8 and a piezoelectric buzzer 6.

[0047] The front end of the cylindrical housing 1 is a sound transmission port, and the rear end of the cylindrical housing 1 is an open structure;

[0048] The mounting plate 3 is installed inside the cylindrical housing 1 through the quick fixing assembly 4, and the mounting plate 3 is arranged close to the rear end of the cylindrical housing 1;

[0049] The annular mounting seat 8 is fixedly mounted on a side surface of the mounting plate 3 facing the front end of the cylindrical housing 1;

[0050] The piezoelectric buzzer 6 is disposed inside the cylindrical housing 1 , and the piezoelectric buzzer 6 is fixedly mounted on an end surface of the annular mounting seat 8 facing away from the mounting plate 3 .

[0051] The speaker adopting the above technical solution is mainly composed of a cylindrical shell 1, a mounting plate 3, an annular mounting seat 8 and a piezoelectric buzzer 6. The mounting plate 3 is installed inside the cylindrical shell 1 through a quick fixing component 4, and the piezoelectric buzzer 6 is installed on the mounting plate 3 through the annular mounting seat 8. Under the action of the quick fixing component 4, the speaker is easier to assemble, which can greatly improve the assembly efficiency and facilitate later disassembly and maintenance.

[0052] Specifically, in the present embodiment, the quick fixing assembly 4 includes a threaded rod 44, a circular plate 41 and at least three groups of locking members 46. The threaded rod 44 is screwed at the center position of the mounting plate 3. The circular plate 41 is fixedly mounted on one end of the threaded rod 44 which faces away from the piezoelectric buzzer 6, and the circular plate 41 is coaxially arranged with the threaded rod 44. The circumferential surface of the circular plate 41 is provided with eccentric grooves 42 which are the same in number as the number of groups of locking members 46. The locking members 46 are all mounted on one side surface of the mounting plate 3 which faces away from the annular mounting seat 8, and the locking members 46 can be pressed against the inner wall of the cylindrical housing 1 under the drive of the eccentric grooves 42.

[0053] Specifically, in the present embodiment, in order to improve the structural stability of the quick fixing assembly 4, at least three groups of locking members 46 are arranged at equal angles in a ring direction around the circular plate 41, and each group of locking members 46 includes a guide sleeve 463, a slide rod 464 and a guide slider 461. The guide sleeve 463 is fixedly mounted on a side surface of the mounting plate 3 facing away from the annular mounting seat 8, the slide rod 464 slides through the guide sleeve 463, the guide slider 461 is fixedly mounted on one end of the slide rod 464 close to the circular plate 41, and the side surface of the guide slider 461 away from the slide rod 464 slides against the bottom of the eccentric groove 42, and the end of the slide rod 464 away from the guide slider 461 can be pressed against the inner wall of the cylindrical shell 1 under the drive of the eccentric groove 42.

[0054] The quick fixing assembly 4 using the above technical solution is mainly composed of a threaded rod 44, a circular plate 41 and at least three groups of locking members 46, and each group of locking members 46 is mainly composed of a guide sleeve 463, a slide rod 464 and a guide slider 461, wherein eccentric grooves 42 having the same number as the number of groups of locking members 46 are opened on the circumferential surface of the circular plate 41. When in use, the rotating circular plate 41 drives the guide slider 461 to move by utilizing the eccentric groove 42, and the guide slider 461 drives the slide rod 464 to move in the guide sleeve 463 so that the end of the slide rod 464 away from the guide slider 461 is pressed against the inner wall of the cylindrical shell 1, thereby utilizing the quick fixing assembly 4 to quickly fix the mounting plate 3 inside the cylindrical shell 1, which is convenient to assemble, thereby improving the assembly efficiency, and facilitating later disassembly and maintenance.

[0055] It is worth noting that in order to prevent the guide slider 461 from being separated from the eccentric groove 42 , the thickness of the guide slider 461 is set to be greater than the travel of the circular plate 41 along the threaded rod 44 .

[0056] In order to improve the stability when the slide rod 464 is pressed against the cylindrical shell 1, a rubber block 465 is fixedly installed at one end of the slide rod 464 away from the guide slider 461. The rubber block 465 can be pressed against the inner wall of the cylindrical shell 1 under the drive of the eccentric groove 42.

[0057] In order to prevent the slide rod 464 from rotating in the guide sleeve 463 and affecting the stability of the locking member 46, the rubber block 465 and the side of the guide slider 461 facing the annular mounting seat 8 are slidably fitted with the side of the mounting plate 3 facing away from the annular mounting seat 8 to prevent the slide rod 464 from rotating in the guide sleeve 463.

[0058] In order to improve the stability of the locking piece 46, a spring 462 is mounted on the slide rod 464, and the two ends of the spring 462 are respectively against the guide sleeve 463 and the guide slider 461. The spring 462 is used to apply a force to the guide slider 461 so that the guide slider 461 can be tightly connected with the eccentric groove 42, thereby improving the stability of the locking piece 46.

[0059] In order to facilitate the control of the rotation of the circular plate 41, a handle 43 is fixedly installed on the side surface of the circular plate 41 facing away from the threaded rod 44. In order to prevent the rubber block 465 from loosening when it is pressed against the inner wall of the cylindrical shell 1, it is specially arranged that when the locking member 46 is in a pressed state against the inner wall of the cylindrical shell 1, the circular plate 41 and the mounting plate 3 are pressed against each other, and the threads of the threaded rod 44 are used to apply force to the circular plate 41 so that the circular plate 41 and the mounting plate 3 are locked, which can avoid the slide rod 464 driving the guide slide block 461 to apply a reaction force to the eccentric groove 42 to drive the circular plate 41 to drive the threaded rod 44 to rotate, thereby causing an undesirable loosening between the rubber block 465 and the inner wall of the cylindrical shell 1.

[0060] In order to prevent the threaded rod 44 from being separated from the circular plate 41 , a limit ring 45 is threadedly sleeved on one end of the threaded rod 44 away from the circular plate 41 .

[0061] In order to improve the sound effect of the speaker, a bowl-shaped sound amplifying cover 7 is fixedly installed on the side surface of the mounting plate 3 facing the front end of the cylindrical shell 1, and the large end of the bowl-shaped sound amplifying cover 7 is set toward the piezoelectric buzzer 6, and the large end edge of the bowl-shaped sound amplifying cover 7 is sealed and connected to the inner wall of the cylindrical shell 1.

[0062] In order to prevent the piezoelectric buzzer 6 from being damaged, a mesh cover 5 for protecting the piezoelectric buzzer 6 is fixedly installed in the sound transmission port at the front end of the cylindrical housing 1 .

[0063] In order to facilitate the installation of the speaker when in use, a mounting plate 2 is fixedly mounted on the rear end of the cylindrical housing 1, and a mounting ear 201 is fixedly mounted on the side of the mounting plate 2, and the mounting ear 201 is provided with a mounting hole.

[0064] In order to match the cylindrical housing 1 , a through hole matching the cylindrical housing 1 is provided at the center of the mounting plate 2 .

[0065] In order to further improve the sound effect of the speaker, a circuit board 9 is fixedly installed on the inner side of the annular mounting seat 8. The circuit board 9 is provided with a signal source and a power amplifier circuit. The signal source is electrically connected to the piezoelectric buzzer 6 through the power amplifier circuit. An audio signal can be input to the signal source from the outside. The input audio signal is amplified by the power amplifier circuit and then transmitted to the piezoelectric buzzer 6, which can effectively improve the sound effect of the speaker.

[0066] In order to facilitate the routing of the connecting cables of the speaker, a threading hole 10 is opened on the mounting plate 3.

[0067] In summary, the speaker provided in this embodiment has the following advantages:

[0068] The speaker is mainly composed of a cylindrical shell 1, a mounting plate 3, an annular mounting seat 8 and a piezoelectric buzzer 6. The mounting plate 3 is mounted inside the cylindrical shell 1 through a quick fixing component 4, and the piezoelectric buzzer 6 is mounted on the mounting plate 3 through the annular mounting seat 8. Under the action of the quick fixing component 4, the speaker is easy to assemble, which can greatly improve the assembly efficiency and facilitate disassembly and maintenance in the later stage.

[0069] During assembly, the assembled mounting plate 3, annular mounting seat 8, and piezoelectric buzzer 6 are installed inside the cylindrical shell 1 through the quick fixing component 4, the circular plate 41 is rotated by the handle 43, and the guide slider 461 is driven to move by the eccentric groove 42. The guide slider 461 drives the slide bar 464 to move in the guide sleeve 463 so that the slide bar 464 is away from the rubber block 465 at one end of the guide slider 461 and is pressed against the inner wall of the cylindrical shell 1. The mounting plate 3, annular mounting seat 8, and piezoelectric buzzer 6 can be quickly fixed and installed inside the cylindrical shell 1 by the quick fixing component 4. The circular plate 41 can be rotated in the opposite direction to loosen the rubber block 465 and the inner wall of the cylindrical shell 1, so that the mounting plate 3, the annular mounting seat 8, and the piezoelectric buzzer 6 can be quickly removed from the inside of the cylindrical shell 1.

[0070] When in use, the speaker can be mounted and fixed on an audio device or a place where it is needed by using screws in conjunction with the mounting ears 201 .

[0071] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A speaker, characterized in that: include: A cylindrical housing (1), wherein the front end of the cylindrical housing (1) is a sound transmission port, and the rear end of the cylindrical housing (1) is an open structure; A mounting plate (3), the mounting plate (3) being mounted inside the cylindrical housing (1) via a quick fixing assembly (4), and the mounting plate (3) being arranged close to the rear end of the cylindrical housing (1); an annular mounting seat (8), the annular mounting seat (8) being fixedly mounted on a side surface of the mounting plate (3) facing the front end of the cylindrical housing (1); A piezoelectric buzzer (6) is arranged inside the cylindrical housing (1), and the piezoelectric buzzer (6) is fixedly mounted on an end surface of the annular mounting seat (8) facing away from the mounting plate (3).

2. The speaker according to claim 1, characterized in that: The quick fixing assembly (4) comprises a threaded rod (44), a circular plate (41) and at least three groups of locking members (46); the threaded rod (44) is screwed at the center of the mounting plate (3); the circular plate (41) is fixedly mounted on one end of the threaded rod (44) facing away from the piezoelectric buzzer (6); the circular plate (41) and the threaded rod (44) are coaxially arranged; the circumferential surface of the circular plate (41) is provided with eccentric grooves (42) the same number as the number of groups of the locking members (46); the locking members (46) are all mounted on a side surface of the mounting plate (3) facing away from the annular mounting seat (8); and the locking members (46) can be pressed against the inner wall of the cylindrical housing (1) under the drive of the eccentric grooves (42).

3. The speaker according to claim 2, characterized in that: At least three groups of locking members (46) are arranged around the circular plate (41) at equal angles in the annular direction, and each group of locking members (46) includes a guide sleeve (463), a slide rod (464) and a guide slider (461). The guide sleeve (463) is fixedly mounted on a side surface of the mounting plate (3) facing away from the annular mounting seat (8). The slide rod (464) slides through the guide sleeve (463). The guide slider (461) is fixedly mounted on an end of the slide rod (464) close to the circular plate (41). A side surface of the guide slider (461) away from the slide rod (464) slides against the bottom of the eccentric groove (42). The end of the slide rod (464) away from the guide slider (461) can be pressed against the inner wall of the cylindrical shell (1) under the drive of the eccentric groove (42).

4. The speaker according to claim 3, characterized in that: A rubber block (465) is fixedly mounted on one end of the slide rod (464) away from the guide slide block (461), and the rubber block (465) can be pressed tightly against the inner wall of the cylindrical housing (1) under the drive of the eccentric groove (42).

5. The speaker according to claim 4, characterized in that: The rubber block (465) and the side of the guide sliding block (461) facing the annular mounting seat (8) are both slidably fitted with the side of the mounting plate (3) facing away from the annular mounting seat (8).

6. The speaker according to claim 4, characterized in that: The slide bar (464) is sleeved with a spring (462), and two ends of the spring (462) respectively abut against the guide sleeve (463) and the guide slide block (461).

7. The speaker according to claim 4, characterized in that: A handle (43) is fixedly mounted on one side of the circular plate (41) facing away from the threaded rod (44); a limit ring (45) is threadedly sleeved on one end of the threaded rod (44) away from the circular plate (41); when the locking member (46) and the inner wall of the cylindrical housing (1) are in a tight contact state, the circular plate (41) and the mounting plate (3) are in tight contact.

8. The speaker according to claim 7, characterized in that: A bowl-shaped sound amplifying cover (7) is fixedly mounted on a side surface of the mounting plate (3) facing the front end of the cylindrical housing (1), the large end of the bowl-shaped sound amplifying cover (7) is arranged toward the piezoelectric buzzer (6), and the large end edge of the bowl-shaped sound amplifying cover (7) is sealed and fitted with the inner wall of the cylindrical housing (1).

9. The speaker according to claim 8, characterized in that: A mesh cover (5) for protecting the piezoelectric buzzer (6) is fixedly installed in the sound transmission port at the front end of the cylindrical housing (1).

10. The speaker according to claim 9, characterized in that: A mounting plate (2) is fixedly mounted on the rear end of the cylindrical housing (1), a through hole matching the cylindrical housing (1) is provided at the center of the mounting plate (2), and a mounting ear (201) is fixedly mounted on the side of the mounting plate (2), and the mounting ear (201) has a mounting hole.

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