CN204539460U - From filtered electrical magnetic seal bass transducer - Google Patents
From filtered electrical magnetic seal bass transducer Download PDFInfo
- Publication number
- CN204539460U CN204539460U CN201520072728.5U CN201520072728U CN204539460U CN 204539460 U CN204539460 U CN 204539460U CN 201520072728 U CN201520072728 U CN 201520072728U CN 204539460 U CN204539460 U CN 204539460U
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- China
- Prior art keywords
- casing
- rubber
- cushion
- lid
- magnetic seal
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- Expired - Fee Related
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Abstract
The utility model relates to a kind of from filtered electrical magnetic seal bass transducer, is made up of casing, the lid that shakes, waveform cushion rubber, circular rubber cushion, permanent magnet, coil; Waveform cushion rubber band draw-in groove, one end sticks into the convex edge of the lid that shakes, and one end sticks into the convex edge of casing, connects shake lid and casing; Coil is arranged on casing internal, is connected with adhesive with between casing; Permanent magnet one end connects the lid that shakes, and be arranged in casing, the other end is supported by circular rubber cushion; The utility model has absorbing high-frequency, does not produce electromagnetic leakage, the firm advantage such as compact.
Description
Technical field
The utility model relates to electroacoustic transduction equipment, especially a kind of from filtered electrical magnetic seal bass transducer.
Background technology
Bass electro-acoustic transducer (loudspeaker) is widely used in the occasions such as sound equipment, body phonosensitive wave treatment and infrasound application.And before bass transducer be mostly to adopt moving-coil structure, Hz-KHz is wider and be difficult to reduce, and need special low-frequency filter circuit to provide low frequency signal for it, if filtering is clean, then high-frequency signal still can reproduce; Simultaneously, the open field structure of the many employings of transducer in the past, and the leakage of electromagnetic field (electromagnetic radiation of especially drive current medium-high frequency part formation) may produce injurious effects to human body, the transducer for modality is caused to produce unhealthful risk because it presses close to human body.
Utility model content
For the weak point existed in above-mentioned technology, the utility model provides a kind of absorbing high-frequency, does not produce electromagnetic leakage, firmly compact from filtered electrical magnetic seal bass transducer.
The utility model realizes in the following way:
The utility model provides a kind of from filtered electrical magnetic seal bass transducer, is made up of casing, the lid that shakes, waveform cushion rubber, circular rubber cushion, permanent magnet, coil.
Waveform cushion rubber band draw-in groove, one end sticks into the convex edge of the lid that shakes, and one end sticks into the convex edge of casing, connects shake lid and casing;
Waveform cushion rubber adopts serpentine cross section;
Coil is arranged on casing internal, adopts enamelled wire one multilayer-wound, is connected with between casing with adhesive;
Permanent magnet one end connects the lid that shakes, and be arranged in casing, by coil encircling, the other end is supported by circular rubber cushion;
Circular rubber cushion is hollow round section joint ring;
Waveform cushion rubber, circular rubber cushion adopt shock material soft rubber (butyl rubber as softer), for absorbing high-frequency vibration and reduction stiffness coefficient.
Know-why of the present utility model:
1, the vibration of damping material absorbing high-frequency is used.
2, " dynamic iron " structure is adopted, to change frequency response characteristic.Object forced vibration produces peak swing near its natural frequency, away from natural frequency then amplitude significantly reduce.The utility model adopts " dynamic iron " structure of core vibration and coil stationary to replace coil vibration in the past and " moving-coil " structure of static core, thus the method being minimized oscillating component natural frequency reaches the object reducing high frequency amplitude.Details are as follows:
The natural frequency of object is main relevant with stiffness coefficient with the quality of object, and reduced mechanical model is:
f
0=
/(2π) （1）
In above-mentioned formula:
F
0for oscillating component natural frequency;
K is the total stiffness coefficient of oscillating component;
M is oscillating component total weight.
For reducing natural frequency, need to increase oscillating component gross mass, reduce the stiffness coefficient of oscillating component, in the utility model, oscillating component gross mass depends primarily on permanent magnet and the weight of lid of shaking, and stiffness coefficient then depends primarily on the stiffness coefficient of waveform cushion rubber, circular rubber cushion.The utility model is by increasing permanent magnet and the weight of the lid that shakes; Adopt the soft rubber (butyl rubber as softer) that stiffness coefficient is little, waveform cushion rubber adopts serpentine cross section, and circular rubber cushion is hollow round section joint ring, reaches the object reducing natural frequency.By adjusting the parameter such as profile, size, material, weight of above-mentioned component, different frequency-response characteristics can be obtained.
Example:
When applying to low frequency sound wave oscillator, natural frequency is more applicable at 10 ~ 20hz.
As f
0=10hz m=0.2kg
Result of calculation
k=789n/m
Through repetition test adjustment, waveform cushion rubber adopts the serpentine cross section of suitable dimension, and circular rubber cushion adopts the hollow round section joint ring of suitable dimension, and all adopts butyl rubber, can realize above-mentioned parameter.
3, make casing and the lid that shakes with ferromagnetic material, make it to form coated shielding to built-in field, prevent electromagnetic field leakage.
Compared with prior art, the utility model has the following advantages:
1, from filter function: can effective absorbing high-frequency sound wave, reproducing low frequencies sound wave, drives the effect that also can realize filtering high frequency sound wave, reproducing bass or subwoofer (even infrasound) with common power amplifier.
2, by the parameter such as profile, size, material, weight of adjustment composition component, different frequency response characteristics can be obtained.
3, the employing of dynamic iron construction, compared with moving-coil structure more firmly with compact, is easy to improve transducer firmness and rated power.Because in moving-coil structure, coil is vibration, and the link position of coil and vibration passing thing (shake and cover) is on coil top, and adhesive can only be adopted to connect, and joint face is less, and bonding strength is limited, and coil easily comes off, and causes quality problems.And when coil vibrates, because effect of stress easily gets loose between coil wire turn, cause fault or noise.For reducing above-mentioned damage, need coil be done lightly as far as possible, the wire diameter of coil will be reduced for this reason, and then limit can the size of loaded current, finally make the power of transducer be restricted.Dynamic iron construction eliminates above-mentioned deficiency, is fixed on by coil among casing, adhesive can be used to carry out large-area connection, thus improve firmness and radiating effect.Meanwhile, coil wire diameter can be done thicker, thus improves rated power.When same rated power, structure can be done smaller and more exquisite and compact.
4, electro-magnetic screen function: make casing and the lid that shakes with ferromagnetic material, make it to form coated shielding to built-in field, prevent electromagnetic field leakage.
Accompanying drawing explanation
Fig. 1 is upward view of the present utility model;
Fig. 2 is cutaway view of the present utility model.
Main element symbol description is as follows:
1 casing 2 shakes lid
The circular rubber cushion of 3 waveform cushion rubber 4
5 permanent magnet 6 coils
Embodiment
In order to clearer statement the utility model, below in conjunction with accompanying drawing, the utility model will be further described.
As shown in Figure 1 to Figure 2, for achieving the above object, the utility model provides a kind of from filtered electrical magnetic seal bass transducer, is made up of casing 1, the lid 2 that shakes, waveform cushion rubber 3, circular rubber cushion 4, permanent magnet 5, coil 6.
Described waveform cushion rubber 3 is with draw-in groove, the convex edge of the lid 2 that shakes described in one end sticks into, and one end sticks into the convex edge of described casing 1, and shake described in connection lid 2 and described casing 1;
Described waveform cushion rubber 3 adopts serpentine cross section;
It is inner that described coil 6 is arranged on described casing 1, adopts enamelled wire one multilayer-wound, be connected with between described casing 1 with adhesive;
Shake described in described permanent magnet 5 one end connects lid 2, is arranged in described casing 1, by described coil 6 around, the other end is supported by described circular rubber cushion 4;
Described circular rubber cushion 4 is hollow round section joint ring;
Described waveform cushion rubber 3, circular rubber cushion 4 adopt shock material soft rubber (butyl rubber as softer), for absorbing high-frequency vibration and reduction stiffness coefficient.
Implementation process of the present utility model is as follows:
First be arranged in described casing 1 by bonding for the described coil 6 of enamelled wire one multilayer-wound, described circular rubber cushion 4 is fixedly mounted on bottom described casing 1, shake described in described permanent magnet 5 one end is fixedly connected with lid 2, the other end is embedded in described circular rubber cushion 4, shake described in draw-in groove one end of described waveform cushion rubber 3 sticks into the convex edge of lid 2, one end sticks into the convex edge of described casing 1, shake described in connection lid 2 and described casing 1, overall assembling is complete, by described coil 6 lead external power supply, described permanent magnet 5 vibrates and described coil 6 is static, forms " dynamic iron " structure.
Be only a specific embodiment of the present utility model above, but the utility model is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection range of the present utility model.
Claims (5)
1. one kind from filtered electrical magnetic seal bass transducer, be made up of casing, the lid that shakes, waveform cushion rubber, circular rubber cushion, permanent magnet, coil, it is characterized in that, described waveform cushion rubber band draw-in groove, shake described in one end sticks into the convex edge covered, one end sticks into the convex edge of described casing, and shake described in connection lid and described casing, and described waveform cushion rubber adopts serpentine cross section.
2. one according to claim 1 is from filtered electrical magnetic seal bass transducer, it is characterized in that, shake described in described permanent magnet one end connects lid, is arranged in described casing, and by described coil encircling, the other end is supported by described circular rubber cushion.
3. one according to claim 1 is from filtered electrical magnetic seal bass transducer, it is characterized in that, described circular rubber cushion is hollow round section joint ring.
4. one according to claim 1 is from filtered electrical magnetic seal bass transducer, it is characterized in that, described waveform cushion rubber, circular rubber cushion adopt shock material soft rubber, for absorbing high-frequency vibration and reduction stiffness coefficient.
5. one according to claim 4 is from filtered electrical magnetic seal bass transducer, it is characterized in that, described shock material soft rubber is butyl rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520072728.5U CN204539460U (en) | 2015-02-03 | 2015-02-03 | From filtered electrical magnetic seal bass transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520072728.5U CN204539460U (en) | 2015-02-03 | 2015-02-03 | From filtered electrical magnetic seal bass transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204539460U true CN204539460U (en) | 2015-08-05 |
Family
ID=53753416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520072728.5U Expired - Fee Related CN204539460U (en) | 2015-02-03 | 2015-02-03 | From filtered electrical magnetic seal bass transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204539460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105992108A (en) * | 2015-02-03 | 2016-10-05 | 孙振华 | Self-filtering electromagnetism sealing bass energy converter |
-
2015
- 2015-02-03 CN CN201520072728.5U patent/CN204539460U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105992108A (en) * | 2015-02-03 | 2016-10-05 | 孙振华 | Self-filtering electromagnetism sealing bass energy converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20210203 |