TWI482504B - Passive Radiation Speaker Improved Structure - Google Patents

Description

Passive radiant speaker improved structure

The invention relates to an improved structure of a passive radiant speaker, in particular to a problem of improving wind-cutting and low-frequency control of a reflective speaker and a passive radiation speaker.

Generally, the single speaker unit or the single speaker system is a composite body of mass, elasticity and damping. When the speaker unit vibrates, an acoustic wave is generated, and the principle is to generate vibration by the elastic action of the suspension system. If the speaker unit is installed in the speaker, because the speaker has air inside, and the air itself has the quality, when the speaker unit generates sound pressure and compresses the air inside the speaker, it is like the air is in the state of pressure wave. Traveling in.

Nowadays, in order to achieve better results, the passive speaker and the reflective speaker are designed. The passive speaker 1 has at least one passive in the closed speaker environment as shown in FIG. 1A and FIG. 1B. The passive component 12 is disposed on the same plane as the speaker unit 11 or the speaker unit, so that the damping effect in the passive speaker 1 can be increased, and the sound pressure in the passive speaker 1 can be buffered to reduce the speaker list. The vibration of the passive speaker caused by the sound of the body 11 is effective and the low frequency effect is effectively improved.

In another type of reflective speaker 2, an echo tube 22 having an opening 221 is formed in the speaker. As shown in FIG. 2A and FIG. 2B, the speaker unit 21 is disposed on the same side or on the different side of the speaker unit 21, respectively. Up, so when the speaker unit 21 vibrates, the echo tube 22 can The sound pressure generated by the internal air squeeze of the speaker enhances the low volume of the bass, so that the reflective speaker 2 can have a good resonance performance.

However, the above two types of speakers (passive speakers, reflective speakers) must be well planned and designed for passive components or echo tubes. In the case of reflective speakers, the size and position of the speaker and the opening of the echo tube are The shape will affect the low frequency change. Therefore, when designing a passive speaker or a reflective speaker, if there is a design failure, it is easy to have a significant impact on the overall efficiency of the speaker and the tone orientation. Therefore, the passive speaker and the reflective speaker. The design is particularly complicated, so it is very difficult to handle, so it is difficult to carry out effective control, so the low-frequency control that can be achieved is limited; and in addition to the above-mentioned shortcomings, since the control is not easy, it is easy to cause the problem of wind-cutting of the finished product, so There is an urgent need for good solutions to improve the problems caused by passive and reflective speakers.

Therefore, if a passive radiant speaker improved structure can be established, the structural characteristics of the passive speaker and the reflective speaker can be combined, and the problem of poor wind and low frequency control caused by the passive speaker and the reflective speaker can be improved. This should be an optimal solution.

The invention provides an improved structure of a passive radiant speaker, which combines the structural features of a passive speaker and a reflective speaker, thereby improving the problem of poor wind-cutting and low-frequency control caused by the passive speaker and the reflective speaker.

The improved structure of the passive radiant speaker can be achieved, wherein the speaker device comprises a box body, and an inner chamber and a sound guiding channel are formed through the partition plate, and the surface of the box body is provided with a sound guiding channel a passive venting member; a passive radiating member is provided with a hanging edge at each of the left and right ends of the diaphragm, and the passive radiating member is disposed between the partition plate and the partition plate, The suspension side of the left and right ends of the diaphragm is connected to the partition; at least one speaker unit surrounds the speaker unit in the inner chamber by the partition and the passive radiating member, and the speaker a single diaphragm is coupled to one side of the inner chamber of the casing, and the passive radiating member is disposed under the speaker unit; when the speaker unit vibrates and sounds, a part of the inner chamber is sounded The pressure passes through the inner chamber through the passive radiating member and extends through the sound guiding passage to release the sound pressure from the air outlet.

More specifically, the sound guiding channel can be provided with at least one reflecting plate, wherein both ends of the reflecting plate are connected to the inner side of the casing.

More specifically, the position of the diaphragm of the speaker unit is set at an angle of 90 degrees to the position of the passive radiating element.

More specifically, the air outlet is disposed on a surface of the casing on a different side of the diaphragm position of the speaker unit.

In addition to the above-mentioned implementation structure, the present invention further has another implementation structure. The improved structure of the passive radiant speaker comprises a box body, and an inner chamber and a sound guiding channel are formed through the partition plate, and the box body is formed. The surface is provided with an air outlet connected to the sound guiding channel; a passive radiating member is a suspension edge disposed at each of the left and right ends of the diaphragm, and the passive radiating member is disposed between the partition and the partition. Therefore, the hanging edges of the left and right ends of the vibrating membrane are connected to the partition; at least one speaker unit surrounds the speaker unit in the inner chamber by the partition and the passive radiating member, and the The diaphragm of the speaker unit is coupled to one side of the inner chamber of the box, and the passive radiating member is disposed behind the speaker unit; when the speaker unit vibrates and sounds, the inner chamber portion thereof Sound pressure is transmitted through the inner chamber through the passive radiating member, and the sound guiding channel is released from the air outlet.

More specifically, the sound guiding channel can be provided with at least one reflecting plate, wherein both ends of the reflecting plate are connected to the inner side of the casing.

More specifically, the position of the diaphragm of the speaker unit is set in parallel with the position of the passive radiating element.

More specifically, the air outlet is disposed on the surface of the casing on the same side of the diaphragm position of the speaker unit.

〔this invention〕

1‧‧‧passive speakers

11‧‧‧Speaker unit

12‧‧‧ Passive components

2‧‧‧Reflective speakers

21‧‧‧Speaker unit

22‧‧‧Echo tube

221‧‧‧Opening

3‧‧‧Speaker device

31‧‧‧ cabinet

311‧‧‧air outlet

32‧‧‧Speaker unit

321‧‧‧Densor

33‧‧‧Baffle

34‧‧‧ inner chamber

35‧‧‧Guide channel

36‧‧‧ Passive radiating parts

361‧‧‧ hanging edge

362‧‧‧Vibration film

37‧‧‧reflector

4‧‧‧Speaker device

41‧‧‧ cabinet

411‧‧‧air outlet

42‧‧‧Speaker unit

421‧‧‧ Diaphragm

43‧‧‧Baffle

44‧‧‧ inner chamber

45‧‧‧Guide channel

46‧‧‧ Passive radiating parts

461‧‧‧ hanging edge

462‧‧‧Vis membrane

47‧‧‧reflector

1A is a schematic diagram of the internal structure of a conventional passive speaker; FIG. 1B is a schematic diagram of the internal structure of a conventional passive speaker; FIG. 2A is a schematic diagram of an internal structure of a conventional reflective speaker; and FIG. 2B is a schematic diagram of an internal structure of a conventional reflective speaker; Fig. 3A is a schematic view showing the internal structure of the first embodiment of the improved structure of the passive radiating type speaker of the present invention.

Fig. 3B is a schematic view showing the first embodiment of the vibration vocalization of the improved structure of the passive radiant speaker of the present invention.

Fig. 4A is a schematic view showing the internal structure of the second embodiment of the improved structure of the passive radiating type speaker of the present invention.

Fig. 4B is a schematic view showing the second embodiment of the vibration vocalization of the improved structure of the passive radiant speaker of the present invention.

Fig. 5A is a front measurement waveform diagram of the sound pressure level of the improved structure of the passive radiant speaker of the present invention.

Figure 5B is a frontal measurement waveform of the sound pressure level of a conventional reflective speaker structure.

Fig. 6A is a waveform diagram of the air outlet of the improved structure of the passive radiating speaker of the present invention.

Figure 6B is a waveform diagram of the echo tube measurement of the sound pressure level of a conventional reflective speaker structure.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

Please refer to FIG. 3A , which is a schematic diagram showing the internal structure of the first embodiment of the improved structure of the passive radiant speaker according to the present invention. The speaker device 3 includes a box body 31 , and the box body 31 defines an inner chamber 34 through the partition plate 33 . And a sound guiding channel 35, and the surface of the box body 31 further has an air outlet 311 connected to the sound guiding channel 35. The air outlet 311 is disposed on a different side of the diaphragm 321 of the speaker unit 32. On the surface of the casing 31, a passive radiating member 36 is disposed between the partition 33 and the partition 33 in the casing 31. The passive radiating member 36 is provided with a hanging edge 361 at each of the left and right ends of the diaphragm 362. The suspension 361 of the left and right ends of the diaphragm 362 is connected to the partition 33.

The partition plate 33 and the passive radiating member 36 are capable of surrounding at least one speaker unit 32 in the inner chamber 34, since one side of the inner chamber 34 (ie, on the surface of the casing 31) has a The diaphragm 321 of the speaker unit 32 is positioned at the opening, so that the diaphragm 321 of the speaker unit 32 is coupled to one side of the inner chamber 34 of the housing 31, and the The passive radiating member 36 is disposed under the speaker unit 32, and the position of the diaphragm 321 of the speaker unit 32 is set at an angle of 90 degrees with the position of the passive radiating member 36; as shown in FIG. 3B When the speaker unit 32 vibrates and sounds, part of the sound pressure in the inner chamber 34 will first contact the passive radiating member 36 downward. Since the passive radiating member 36 is subjected to sound pressure vibration, the sound pressure can be further suppressed. The sound pressure is released from the air outlet 311 by vibrating through the inner chamber 34 and extending the sound guiding passage 35.

In addition, as can be seen from FIGS. 3A and 3B, at least one reflecting plate 37 can be disposed near the sound guiding channel 35 of the passive radiating member, and both ends of the reflecting plate 37 are The inner side of the casing 31 is connected, so that when the sound pressure is transmitted from the suspension 361 of the passive radiating member 36, the sound pressure can be rebounded to the sound guiding passage 35 by the reflecting plate 37 to avoid sound pressure. It is consumed.

In addition to the first embodiment, there is a second embodiment, as shown in FIGS. 4A and 4B, wherein the speaker device 4 also has a casing 41, and the casing 41 is formed through the partition 43. An inner chamber 44 and a sound guiding passage 45. The surface of the box 41 is also provided with an air outlet 411 connected to the sound guiding passage 45, and a passive radiating member disposed between the partition 43 and the partition 43 46, a suspension 461 is disposed on each of the left and right ends of the diaphragm 462, and the suspension 461 of the left and right ends of the diaphragm 462 is connected to the partition 43.

The difference from the first embodiment is that the position of the diaphragm 421 of the speaker unit 42 of the second embodiment is set in parallel with the position of the passive radiating member 46, and the air outlet 411 is disposed at the same. The diaphragm 421 of the speaker unit 42 is located on the same surface of the casing 41 on the same side. As can be seen from FIG. 4B, when the speaker unit 421 vibrates, part of the sound pressure in the inner chamber 44 will be rearwardly contacted. The passive radiating member 46, because the passive radiating member 46 is subjected to the vibration of the sound pressure, can pass the sound pressure through the inner chamber 44 through the vibration, and the sound guiding channel 45 can be used to press the sound pressure from the air outlet. 411 released.

In addition, at least one reflecting plate 47 can be disposed at the sound guiding channel 45 adjacent to the passive radiating member 46. Both ends of the reflecting plate 47 are connected to the inner side surface of the casing 41, so when the sound pressure is from the passive radiation After the diaphragm 462 of the member 46 is transmitted, the sound pressure can be rebounded to the sound guiding passage 45 by the reflecting plate 47 to prevent the sound pressure from being consumed.

The SPL sound pressure level measurement is performed by the improved structure of the passive radiant speaker of the present invention and the conventional reflective speaker structure, which is known from the 5A and 5B drawings. The measurement of the sound pressure level is performed, wherein the test result of the improved structure of the passive radiant speaker of the present invention is as shown in FIG. 5A, and the low frequency system can be maintained down to 65 Hz, but it is known from the 5B The structure of the reflective speaker is also the measurement of the sound pressure level on the front side, but it is obvious from the figure that the low frequency 95Hz starts to fall down. It can be seen that the control stability of the conventional traditional reflection type speaker structure at low frequencies is known. And the low frequency extension is inferior to the improved structure of the passive radiant speaker of the present invention.

In addition to the positive measurement of the SPL sound pressure level, the near-field test can be performed at the air outlet of the improved structure of the passive radiant speaker of the present invention. It can be seen from Fig. 6A that the low frequency is between 53 Hz and 310 Hz. There is a wide frequency band, but the near-field test at the echo tube of the conventional reflective speaker structure of Fig. 6B shows that there are some micro-bumping bands around 120 Hz, which is known from the conventional The reflective speaker structure, the improved structure of the passive radiant speaker of the present invention has better low frequency response, so the low frequency performance is superior to the conventional conventional reflective speaker structure.

The improved structure of the passive radiant speaker provided by the present invention has the following advantages when compared with other conventional technologies:

1. The improved structure of the passive radiant speaker of the present invention combines the structural features of the passive speaker and the reflective speaker, and can improve the problem of wind cut and low frequency control caused by poor design of the passive speaker and the reflective speaker.

2. The present invention transmits a part of the sound pressure in the inner chamber through the passive radiating member, and then cooperates with the reflecting plate through the sound guiding channel, so that part of the sound pressure can be smoothly passed through the sound guiding channel. And it is transmitted from the air outlet, so it can effectively solve the problem of poor low-frequency control effect.

The features and spirit of the present invention will be more apparent from the detailed description of the preferred embodiments. On the contrary, the intention is to cover various modifications and equivalents within the scope of the invention as claimed.

3‧‧‧Speaker device

31‧‧‧ cabinet

311‧‧‧air outlet

32‧‧‧Speaker unit

321‧‧‧Densor

33‧‧‧Baffle

34‧‧‧ inner chamber

35‧‧‧Guide channel

36‧‧‧ Passive radiating parts

361‧‧‧ hanging edge

362‧‧‧Vibration film

37‧‧‧reflector

Claims (8)

An improved structure of a passive radiant speaker comprises: a box body through which an inner chamber and a sound guiding passage are formed, and the surface of the box body is provided with an air outlet connected to the sound guiding passage; A passive radiating member is a suspension edge disposed at each of the left and right ends of the diaphragm, and the passive radiating member is disposed between the partition plate and the partition plate, so that the hanging edge portions of the left and right ends of the diaphragm are separated from the spacer The board is connected; the at least one speaker unit surrounds the speaker unit in the inner chamber by the partition plate and the passive radiating member, and the diaphragm of the speaker unit is coupled to the inner chamber a side surface, and the passive radiating component is disposed under the speaker unit; when the speaker unit vibrates and sounds, a part of the sound pressure in the inner chamber passes through the inner chamber through the passive radiating member, and is extended The sound guiding channel releases sound pressure from the air outlet. The passive radiant speaker improved structure of claim 1 , wherein the sound guiding channel is provided with at least one reflecting plate, wherein the two ends of the reflecting plate are connected to the inner side of the casing. The passive radiant speaker improved structure of claim 1 , wherein the diaphragm of the speaker unit is disposed at a 90 degree angle to the position of the passive radiating member. The passive radiant speaker improved structure according to claim 1 , wherein the air outlet is disposed on a surface of the casing on the same side of the diaphragm position of the speaker unit. An improved structure of a passive radiant speaker comprises: a box body through which an inner chamber and a sound guiding passage are formed, and the surface of the box body is provided with an air outlet connected to the sound guiding passage; A passive radiating member is a suspension edge disposed at each of the left and right ends of the diaphragm, and the passive radiating member is disposed between the partition plate and the partition plate, so that the hanging edge portions of the left and right ends of the diaphragm are separated from the spacer The board is connected; the at least one speaker unit surrounds the speaker unit in the inner chamber by the partition plate and the passive radiating member, and the diaphragm of the speaker unit is coupled to the inner chamber On the side, the passive radiating component is disposed behind the speaker unit; when the speaker unit vibrates and sounds, part of the sound pressure in the inner chamber passes through the inner chamber through the passive radiating member, and is extended The sound guiding channel releases sound pressure from the air outlet. The passive radiant speaker improved structure of claim 5 , wherein the sound guiding channel is provided with at least one reflecting plate, wherein the two ends of the reflecting plate are connected to the inner side of the casing. The passive radiant speaker improved structure according to claim 5 , wherein the diaphragm of the speaker unit is disposed in a position parallel to the position of the passive radiating member. The passive radiant speaker improved structure according to claim 5 , wherein the air outlet is disposed on a surface of the casing on a different side of the diaphragm position of the speaker unit.