TECHNICAL FIELD

The invention is related to a device which enables to harvest electricity from the vibration created by loudspeakers.

PRIOR ART

As a ported system (also called bass reflex or vented enclosure) was used to enable the free entrance and exiting of air in loudspeaker enclosures, said enclosures did not contain moving parts where electricity could be produced. The mounting of any kind of component to produce electricity to the cone of the loudspeaker driver was not considered as it would change the weight of the cone and therefore the structure of sound.

If the loudspeaker is a portable device, the batteries used to be charged by being plugged by the user, into a device that provided electricity. The electricity amount that was provided charged the battery. Therefore it could be said that the playing time of the portable loudspeakers would last as much as the electricity amount charged into the batteries. The technique that has been commonly used in loudspeaker production (prior art), it to provide ported structures for air to enter in and exit out. (Bass reflex system) In these types of systems the moving components are minimized and sufficient movement is not available for harvesting electricity. Any kind of additional instalments are not performed as weight will be loaded onto the loudspeaker driver’ s cone.

BRIEF DESCRIPTION OF THE INVENTION

The present invention has been developed in order to eliminate the disadvantages mentioned above and is related to harvesting electricity from the vibration created by loudspeakers, in order to provide new advantages to the related technical field.

The invention increases physical motion in loudspeaker enclosures, harvests electricity from this motion by using a mechanism, enhances the performance of the loudspeaker and provides energy saving. The amount of energy consumed is reduced by means of the electricity that is produced and if the system is operated with a battery, the produced electricity also charges the battery at the same time.

The aim of the invention is to reduce the energy consumption amounts of portable loudspeaker devices and to significantly increase battery usage life.

Another aim of the invention is to harvest electricity from the vibration created.

Another aim of the invention is to enhance the performance of the loudspeaker. (Adding weight to a passive radiator’s cone lowers the tuning frequency of the loudspeaker which enables the loudspeaker to produce lower frequencies.)

According to a preferred embodiment of the invention, the system comprises a passive radiator.

BRIEF DESCRIPTION OF THE FIGURES

In Figure 1, the device which enables to harvest electricity from the vibration created by the loudspeakers can be seen.

In Figure 2, it can be seen that the piezoelectric element that has been fixed to the enclosure from the Right Connection point and the Left Connection points cannot move forward, therefore it twists and it produces electricity.

In Figure 3, it can be seen that the loudspeaker driver and the passive radiator move in reverse directions and the piezoelectric element twists backwards and produces electricity.

In Figure 4, it can be seen that the piezoelectric element is fixed to the enclosure only from the right connection point.

REFERENCE NUMBERS

1 Loudspeaker Driver

2 Passive Radiator

3 Closed (also called sealed) enclosure of the loudspeaker

4 Transmission rod

5 Piezoelectric Element

6 Left Connection point

7 Right Connection point DETAILED DESCRIPTION OF THE INVENTION

The novelty of the invention has been described with examples that shall not limit the scope of the invention and which have been intended to only clarify the subject matter of the invention.

The present invention is related to harvesting electricity from the vibration created by the loudspeakers. Loudspeakers convert electrical energy into motion (by pushing the cone of the driver forward and backwards) and they produce sound.

The technique suggested by the invention uses loudspeaker driver(s) (1) and passive radiator(s) (2). While the loudspeaker driver (1) moves back and forth, it vibrates the passive radiator(s). As passive radiators (2) resonate as mechanisms they are suitable for electricity production.

The invention is as follows. The motion of passive radiators (2) is used to resonate, vibrate, bend or twist a piezoelectric element (5) in order to produce electricity.

As it can be seen in Figure 1, the loudspeaker driver (1), passive radiator (2), a transmission rod (4) that has been attached to the mobile cone of the passive radiator (2), Rod or shaft which transfers the motion received from the passive radiator to the piezoelectric element, a piezoelectric element (5), and the Left Connection point (6) and Right Connection points (7) where the piezoelectric element (5) is coupled to the enclosure has been shown inside the closed enclosure (3) of the loudspeaker.

While the cone of the loudspeaker driver (1) moves back and forth, the cone of the passive radiator (2) is moved back and forth as there is no vent for air to be discharged. The transmission rod (4) that is connected to the cone produces electricity by resonating, twisting or bending the piezoelectric element (5).

As it can be seen in Figure 2, while the cone of the illustrated loudspeaker driver (1) moves back and forth, the cone of the passive radiator (2) is moved back and forth by means of air. The transmission rod (4) that is connected to the cone also tries to push the piezoelectric element (5) forward. As the piezoelectric element (5) that is fixed to the enclosure via the Right Connection point (7) and Left Connection points (6) cannot move forward, it bends. Thereby electricity is produced from energy. As it can be seen in Figure 3, while the cone of the illustrated loudspeaker driver(l) moves back and forth, the cone of the passive radiator (2) is pulled back by means of air. By this means the piezoelectric element (5) bends and it produces electricity.

In Figure 4, alternatively it can be seen that the piezoelectric element (5) is fixed to the enclosure only from a single connection point. The piezoelectric element that is used can be mounted to a fixed point in different ways according to its shape and structure; the aim here is to vibrate the piezoelectric element (5) or to bend it. By this means it is possible to produce electricity as it has been described before.

According to the information provided above, the invention is related to A loudspeaker system which harvesting electricity from the vibration created by the loudspeakers, characterized by comprising;

• At least one loudspeaker driver (1) whose cone moves back and forth,

• A passive radiator (2) which enables usage of energy harvesting devices to produce electricity inside at least one loudspeaker enclosure,

• A closed enclosure of the loudspeaker (3) which comprises at least a loudspeaker driver (1), at least a passive radiator (2), at least a transmission rod (4), at least a Piezoelectric element (5), at least a Right Connection point (7), and at least a Left Connection point (6),

• A transmission rod (4) that is connected to at least one cone and that resonates the piezoelectric element (5),

• At least a Piezoelectric Element (5), which enables electricity production,

• At least a Connection Point (Left Connection point (6) or Right Connection point (7)) for fixing the Piezoelectric element (5) to the enclosure.