CN211404040U - Electromagnetic buzzer convenient for heat dissipation - Google Patents
Electromagnetic buzzer convenient for heat dissipation Download PDFInfo
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- CN211404040U CN211404040U CN201922370966.5U CN201922370966U CN211404040U CN 211404040 U CN211404040 U CN 211404040U CN 201922370966 U CN201922370966 U CN 201922370966U CN 211404040 U CN211404040 U CN 211404040U
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Abstract
The utility model provides an electromagnetic buzzer convenient for heat dissipation, which comprises a shell and a top cover; the inside appearance chamber that is used for holding magnet, coil and iron core that is equipped with of casing: a first heat dissipation frame is arranged in the accommodating cavity and comprises a heat dissipation plate and a first heat dissipation wall, a plurality of first heat dissipation fins are fixed on the inner wall of the first heat dissipation wall, and a plurality of first heat dissipation holes are formed in the first heat dissipation wall; the shell is provided with a plurality of second heat dissipation holes; the outer wall of the shell is sunken with a circle of limiting groove, a heat dissipation adjusting ring is arranged in the limiting groove, a plurality of third heat dissipation holes are formed in the heat dissipation adjusting ring, and each third heat dissipation hole can be matched with one second heat dissipation hole to form a ventilation hole. This kind of electromagnetism buzzer convenient to heat dissipation increases the heat radiating area of coil through first fin, utilizes the ventilation hole to accelerate the inside and outside air flow of buzzer simultaneously, has improved electromagnetism buzzer's radiating efficiency.
Description
Technical Field
The utility model relates to a buzzer field especially relates to an electromagnetism buzzer convenient to heat dissipation.
Background
First, the commonly used buzzer is mainly divided into two types, namely a piezoelectric buzzer and an electromagnetic buzzer, and the electromagnetic buzzer is widely applied to various electronic devices needing sounding due to the excellent tone and long service life of the electromagnetic buzzer. The electromagnetic buzzer principle is that a magnetic field generated after the coil is electrified acts on the metal diaphragm to enable the metal diaphragm to vibrate and sound, and the coil can generate a large amount of heat after being electrified for a long time, so that the internal temperature of the electromagnetic buzzer is too high, the circuit is easily damaged, and the normal work of the electromagnetic buzzer is influenced. Therefore, it is necessary to invent an electromagnetic buzzer which facilitates heat dissipation.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to solve the problem, the utility model provides an electromagnetic buzzer convenient to heat dissipation solves above-mentioned problem.
The utility model provides a technical scheme that its technical problem adopted is: an electromagnetic buzzer convenient for heat dissipation comprises a shell and a top cover, wherein an inner thread is arranged on the inner wall of the upper end of the shell, an outer thread is arranged on the outer wall of the top cover, the top cover is in threaded connection with the shell, and a containing cavity for containing a magnet, a coil and an iron core is arranged inside the shell;
a first heat dissipation frame is arranged in the accommodating cavity and comprises a horizontally arranged heat dissipation plate and a vertically arranged first heat dissipation wall;
the magnet, the coil and the iron core are all arranged on the heat dissipation plate, the coil is arranged on the periphery of the iron core, the magnet is arranged on the periphery of the coil, and the first heat dissipation wall is located between the magnet and the coil; a plurality of first radiating fins are axially fixed on the inner wall of the first radiating wall, a first radiating fin is fixedly arranged on one side of the first radiating fin, which is far away from the first radiating wall, and the side surface of the first radiating fin, which is far away from the first radiating fin, is tightly attached to the coil;
a plurality of first heat dissipation holes are formed in the first heat dissipation wall, and the first heat dissipation holes and the first heat dissipation fins are distributed on the first heat dissipation wall at intervals;
the shell is provided with a plurality of second heat dissipation holes, a circle of limiting groove is formed in the outer wall of the shell in a concave mode, and the projections of the second heat dissipation holes, facing the shell, are located in the limiting groove;
a heat dissipation adjusting ring which can be in sliding fit with the limiting groove is arranged in the limiting groove, and a plurality of third heat dissipation holes which are consistent with the second heat dissipation holes in shape are formed in the heat dissipation adjusting ring;
the number of the third heat dissipation holes is consistent with that of the second heat dissipation holes, and each third heat dissipation hole can be matched with one second heat dissipation hole to form a ventilation hole.
Preferably, the heat dissipation plate is further provided with a second heat dissipation frame, the second heat dissipation frame comprises a second heat dissipation wall which is vertically arranged, the second heat dissipation wall is sleeved on the iron core, and the inner wall of the second heat dissipation wall is tightly attached to the outer wall of the iron core;
the outer wall of the second heat dissipation wall is fixedly provided with second heat dissipation fins which are distributed in a radial mode, one side, far away from the second heat dissipation wall, of each second heat dissipation fin is fixedly provided with a second heat dissipation fin, and the side face, far away from the second heat dissipation fins, of each second heat dissipation fin is tightly attached to the coil.
Preferably, the lower end of the heat dissipation plate is upwards recessed with a mounting groove for arranging a circuit board, two connecting holes are arranged in the mounting groove, the connecting holes are through holes, and two ends of the coil respectively penetrate through the connecting holes to be connected with the circuit board;
the bottom surface of the shell is provided with a glue sealing hole, a circle of connecting wall suitable for being inserted into the mounting groove is upwards protruded along the inner wall of the glue sealing hole, the outer wall of the connecting wall is tightly attached to the inner wall of the mounting groove, and the glue sealing hole is matched with the mounting groove to form a glue sealing groove.
Preferably, a first friction stripe group is vertically arranged on the outer wall of the top cover and is positioned above the external thread;
and a second friction fringe group is vertically arranged on the outer wall of the heat dissipation adjusting ring and is positioned below the third heat dissipation holes.
Preferably, the heat dissipation plate has a first fitting groove and a second fitting groove recessed therein, the core is mounted in the first fitting groove, and the magnet is mounted in the second fitting groove.
Preferably, a dust screen is arranged on the third heat dissipation hole.
The beneficial effects of the utility model are that, this kind of electromagnetic buzzer convenient to heat dissipation wears the heat that produces the coil through first heat dissipation wing on the radiator that leads to heat radiating area bigger for the radiating effect of coil has improved electromagnetic buzzer's radiating efficiency.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the preferred embodiment of the electromagnetic buzzer convenient for heat dissipation of the present invention.
Fig. 2 is a schematic view of a local structure of the electromagnetic buzzer convenient for heat dissipation of the present invention.
Fig. 3 is a schematic view of a local structure of the electromagnetic buzzer convenient for heat dissipation of the present invention.
Fig. 4 is a schematic view of a local structure of the electromagnetic buzzer convenient for heat dissipation of the present invention.
Fig. 5 is an enlarged view of a portion a of fig. 4.
Fig. 6 is a schematic view of a local structure of the electromagnetic buzzer convenient for heat dissipation of the present invention.
Fig. 7 is a schematic structural diagram of the preferred embodiment of the electromagnetic buzzer convenient for heat dissipation of the present invention.
In the figure, 1, a top cover, 101, sound outlet holes, 2, a shell, 201, an assembly ring, 202, second heat dissipation holes, 203, a limiting groove, 204, a glue sealing hole, 3, a first heat dissipation frame, 301, a heat dissipation plate, 3011, an installation groove, 3012, a connection hole, 3013, a first assembly groove, 3014, a second assembly groove, 302, a first heat dissipation wall, 3021, a first heat dissipation hole, 303, a first heat dissipation fin, 304, a first heat dissipation fin, 4, a second heat dissipation frame, 401, a second heat dissipation wall, 402, a second heat dissipation fin, 403, a second heat dissipation fin, 5, a heat dissipation adjustment ring, 501, a third heat dissipation hole, 6, an iron core, 7, a coil, 8 and a magnet.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the present invention, 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.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1-7, the utility model provides an electromagnetic buzzer convenient for heat dissipation, include
The top cap 1, top cap 1 are equipped with the open-ended hollow cylinder structure for the lower extreme, and the upper end of top cap 1 is provided with out sound hole 101, and it is circular through-hole to go out sound hole 101.
The inside appearance chamber that is used for holding magnet 8, coil 7, iron core 6 and metal diaphragm that is equipped with of casing 2 holds the intracavity portion and is provided with first heat dissipation frame 3 and assembly ring 201, and assembly ring 201 is located the top of first heat dissipation frame 3. The mounting ring 201 is a circular ring protruding axially on the inner wall of the housing 2, and the metal diaphragm is fixedly arranged on the mounting ring 201.
The first heat dissipation frame 3 includes a horizontally disposed heat dissipation plate 301 and a vertically disposed first heat dissipation wall 302.
The heat dissipation plate 301 is a circular plate having a certain thickness, and a circular mounting groove 3011 is recessed upward on a lower surface of the heat dissipation plate 301, and the mounting groove 3011 is used for mounting a circuit board. A circular sealing glue hole 204 is formed in the bottom surface of the housing 2, and a circle of connecting wall suitable for being inserted into the mounting groove 3011 is formed in the upward protruding manner of the inner wall of the sealing glue hole 204 along the inner wall of the sealing glue hole 204. The heating panel 301 card is established in the wall cooperation of the vertical setting of connecting wall and casing 2 forms annular recess, and the outer wall of connecting wall and the inner wall of mounting groove 3011 paste tightly and set up, and the upper end of connecting wall supports the setting with the circuit board of installing in mounting groove 3011, seals gluey hole 204 and forms with the mounting groove 3011 cooperation and seal gluey groove. The connecting wall can push the circuit board to be arranged in the mounting groove 3011, and the circuit board can be fixed. During processing, the circuit board can be further fixed by adding glue into the glue sealing groove.
A first circular assembling groove 3013 and a second circular assembling groove 3014 are recessed in the upper surface of the heat dissipation plate 301, the first assembling groove 3013 is used for fixing the cylindrical iron core 6, and the second assembling groove 3014 is used for fixing the circular magnet 8. A coil 7 is arranged between the iron core 6 and the magnet 8, two connecting holes 3012 penetrating through the heat dissipation plate 301 are arranged in the mounting groove 3011, and two ends of the coil 7 respectively penetrate through the connecting holes 3012 to be connected with the circuit board.
The first heat dissipation wall 302 is a hollow cylindrical structure with openings at the upper and lower ends thereof, and the first heat dissipation wall 302 is located between the magnet 8 and the coil 7. A plurality of first cooling fins 303 are axially fixed on the inner wall of the first cooling wall 302, a first cooling fin 304 is fixedly arranged on one side of the first cooling fin 303 far away from the first cooling wall 302, the first cooling fin 303 is perpendicular to the first cooling fin 304, and the side of the first cooling fin 304 far away from the first cooling fin 303 is tightly attached to the coil 7.
In this embodiment, the first heat dissipation fins 304 are made of heat dissipation silicone. The side of the first heat sink 304 close to the first heat sink 303 is provided with a groove, and the side of the first heat sink 303 far from the first heat sink wall 302 is embedded in the groove on the side of the first heat sink 304.
The coil 7 generates heat after being electrified for a long time, the first heat dissipation fins 304 tightly attached to the coil 7 can conduct the heat to the first heat dissipation fins 303 and the first heat dissipation wall 302, so that the heat dissipation area of the coil 7 is increased, and the heat dissipation effect of the coil 7 is greatly improved. Meanwhile, the plurality of first heat dissipation fins 304 can be matched to form a limiting space, and the limiting space can limit the position of the coil 7 and can play a certain fixing role.
According to a further embodiment, a second heat sink frame 4 is also provided on the heat sink plate 301.
The second heat dissipation frame 4 includes a second heat dissipation wall 401, the upper and lower ends of the second heat dissipation wall 401, which are vertically disposed, are provided with open-ended hollow cylindrical structures, the second heat dissipation wall 401 is sleeved on the iron core 6, and the inner wall of the second heat dissipation wall 401 is closely attached to the outer wall of the iron core 6. The outer wall of the second heat dissipation wall 401 is fixedly provided with second heat dissipation fins 402 which are uniformly distributed in a radial shape, one side of each second heat dissipation fin 402, which is far away from the second heat dissipation wall 401, is fixedly provided with a second heat dissipation fin 403, the second heat dissipation fins 402 are perpendicular to the second heat dissipation fins 403, and the side surfaces, which are far away from the second heat dissipation fins 402, of the second heat dissipation fins 403 are tightly attached to the coils 7.
In this embodiment, the second heat dissipation wall 401 and the second heat dissipation fins 403 are made of heat dissipation silicone. Grooves are formed in the side face of the second heat dissipation wall 401 close to the second heat dissipation fin 402 and the side face of the second heat dissipation fin 403 close to the second heat dissipation fin 402, one side of the second heat dissipation fin 402 is embedded in the groove in the side face of the second heat dissipation wall 401, and the other side of the second heat dissipation fin 402 is embedded in the groove in the side face of the second heat dissipation fin 403.
The second heat dissipation fins 403 can conduct heat from the coil 7 to the second heat dissipation fins 402 and the second heat dissipation walls 401, the second heat dissipation walls 401 can conduct heat to the core 6, and the core 6 can conduct heat to the heat dissipation plate 301. The second heat dissipation frame 4 can further improve the heat dissipation efficiency by increasing the heat dissipation area by the second heat dissipation fins 402 and transferring the heat to the heat dissipation plate 301 by the iron core 6 having a good heat conductivity.
According to another embodiment, the first heat dissipating wall 302 is formed with a plurality of rectangular first heat dissipating holes 3021, and the first heat dissipating holes 3021 and the first heat dissipating fins 303 are spaced apart from each other on the first heat dissipating wall 302.
A plurality of second heat dissipation holes 202 are formed in the housing 2, a circle of limiting groove 203 is formed in the outer wall of the housing 2 in a recessed mode, and the projections of the second heat dissipation holes 202 towards the housing 2 are located in the limiting groove 203.
The limiting groove 203 is internally provided with a heat dissipation adjusting ring 5 which is in sliding fit with the limiting groove 203, and the heat dissipation adjusting ring 5 can rotate along the limiting groove 203. A plurality of third heat dissipation holes 501 with the same shape as the second heat dissipation holes 202 are formed in the heat dissipation adjusting ring 5, the number of the third heat dissipation holes 501 is the same as the number of the second heat dissipation holes 202, and each third heat dissipation hole 501 can be matched with one second heat dissipation hole 202 to form a ventilation hole.
A second friction stripe group is arranged on the outer wall of the heat dissipation adjusting ring 5, the second friction stripe group is located below the third heat dissipation hole 501, and the second friction stripe group comprises a plurality of vertically arranged stripes. The second friction stripe group can increase the friction force between the fingers of the user and the heat dissipation adjusting ring 5, and the user can conveniently rotate and adjust the heat dissipation adjusting ring 5.
Rotating the heat dissipation adjustment ring 5 can open or close the vent holes. When the electromagnetic buzzer is in the production and storage processes, the ventilation hole can be closed to prevent magnetic pollution particles from entering the inner wall of the buzzer from the ventilation hole to influence the work behind the buzzer.
When the electromagnetic buzzer works, the vent hole is opened, and the interior of the buzzer is communicated with the outside. The first heat dissipation hole 3021 and the ventilation hole cooperate to accelerate air circulation near the coil 7, thereby improving the overall heat dissipation efficiency of the electromagnetic buzzer. In this embodiment, a dust screen is disposed on the third heat dissipation hole 501, and the dust screen is fixed on the inner wall of the third heat dissipation hole 501 through glue, and the dust screen is not shown in the drawings of the specification. The dust screen can filter the dust and the magnetic pollution granule that come from the external world when bee calling organ's inside and outside air exchanges, avoids electromagnetic bee calling organ's work to receive the influence.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. The utility model provides an electromagnetism buzzer convenient to heat dissipation, includes casing and top cap, be provided with the internal thread on the inner wall of the upper end of casing, be provided with the external screw thread on the outer wall of top cap, the top cap with casing threaded connection, the inside appearance chamber that is used for holding magnet, coil and iron core that is equipped with of casing, its characterized in that:
a first heat dissipation frame is arranged in the accommodating cavity and comprises a horizontally arranged heat dissipation plate and a vertically arranged first heat dissipation wall;
the magnet, the coil and the iron core are all arranged on the heat dissipation plate, the coil is arranged on the periphery of the iron core, the magnet is arranged on the periphery of the coil, and the first heat dissipation wall is located between the magnet and the coil; a plurality of first radiating fins are axially fixed on the inner wall of the first radiating wall, a first radiating fin is fixedly arranged on one side of the first radiating fin, which is far away from the first radiating wall, and the side surface of the first radiating fin, which is far away from the first radiating fin, is tightly attached to the coil;
a plurality of first heat dissipation holes are formed in the first heat dissipation wall, and the first heat dissipation holes and the first heat dissipation fins are distributed on the first heat dissipation wall at intervals;
the shell is provided with a plurality of second heat dissipation holes, a circle of limiting groove is formed in the outer wall of the shell in a concave mode, and the projections of the second heat dissipation holes, facing the shell, are located in the limiting groove;
a heat dissipation adjusting ring which can be in sliding fit with the limiting groove is arranged in the limiting groove, and a plurality of third heat dissipation holes which are consistent with the second heat dissipation holes in shape are formed in the heat dissipation adjusting ring;
the number of the third heat dissipation holes is consistent with that of the second heat dissipation holes, and each third heat dissipation hole can be matched with one second heat dissipation hole to form a ventilation hole.
2. The electromagnetic buzzer facilitating heat dissipation as set forth in claim 1, wherein:
the heat dissipation plate is also provided with a second heat dissipation frame, the second heat dissipation frame comprises a second heat dissipation wall which is vertically arranged, the second heat dissipation wall is sleeved on the iron core, and the inner wall of the second heat dissipation wall is tightly attached to the outer wall of the iron core;
the outer wall of the second heat dissipation wall is fixedly provided with second heat dissipation fins which are distributed in a radial mode, one side, far away from the second heat dissipation wall, of each second heat dissipation fin is fixedly provided with a second heat dissipation fin, and the side face, far away from the second heat dissipation fins, of each second heat dissipation fin is tightly attached to the coil.
3. The electromagnetic buzzer facilitating heat dissipation as set forth in claim 2, wherein:
the lower end of the heat dissipation plate is upwards recessed with a mounting groove for arranging a circuit board, two connecting holes are arranged in the mounting groove, the connecting holes are through holes, and two ends of the coil respectively penetrate through the connecting holes to be connected with the circuit board;
the bottom surface of the shell is provided with a glue sealing hole, a circle of connecting wall suitable for being inserted into the mounting groove is upwards protruded along the inner wall of the glue sealing hole, the outer wall of the connecting wall is tightly attached to the inner wall of the mounting groove, and the glue sealing hole is matched with the mounting groove to form a glue sealing groove.
4. An electromagnetic buzzer for facilitating heat dissipation as set forth in claim 3, wherein:
a first friction stripe group is vertically arranged on the outer wall of the top cover and is positioned above the external thread;
and a second friction fringe group is vertically arranged on the outer wall of the heat dissipation adjusting ring and is positioned below the third heat dissipation holes.
5. The electromagnetic buzzer for facilitating heat dissipation of claim 4, wherein:
the heating panel is sunken to have first assembly groove and second assembly groove, the iron core is installed in first assembly groove, magnet is installed in the second assembly groove.
6. The electromagnetic buzzer facilitating heat dissipation of claim 5, wherein:
and a dust screen is arranged on the third heat dissipation hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922370966.5U CN211404040U (en) | 2019-12-25 | 2019-12-25 | Electromagnetic buzzer convenient for heat dissipation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922370966.5U CN211404040U (en) | 2019-12-25 | 2019-12-25 | Electromagnetic buzzer convenient for heat dissipation |
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| Publication Number | Publication Date |
|---|---|
| CN211404040U true CN211404040U (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922370966.5U Active CN211404040U (en) | 2019-12-25 | 2019-12-25 | Electromagnetic buzzer convenient for heat dissipation |
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| Country | Link |
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| CN (1) | CN211404040U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112634849A (en) * | 2020-12-17 | 2021-04-09 | 新沂市承翔电子有限公司 | Novel dustproof and waterproof electronic buzzer |
-
2019
- 2019-12-25 CN CN201922370966.5U patent/CN211404040U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112634849A (en) * | 2020-12-17 | 2021-04-09 | 新沂市承翔电子有限公司 | Novel dustproof and waterproof electronic buzzer |
| CN112634849B (en) * | 2020-12-17 | 2022-01-21 | 新沂市承翔电子有限公司 | Novel dustproof and waterproof electronic buzzer |
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