KR20020060434A - Swivel Apparatus for speaker system - Google Patents

Abstract

PURPOSE: A swivel device of a speaker system is provided to automatically adjust a position of the speaker system by the supply of power, and to manually operate a swivel angel of the speaker system. And the swivel device is provided to stably maintain the speaker system from an external shock. CONSTITUTION: A motor(11) makes electrical energy converted into mechanical kinetic energy by the supply of power. A worm gear(12) composed of a worm(12a) and a worm wheel(12b) delivers rotational energy of the motor. First, second, third and fourth gears(14,18,13,19) are respectively composed of first, second, third and fourth spur gears(14a,18a,13a,19a) and first and second pinions, a first bevel gear and a fourth pinion(14b,18b,13b,19b), to respectively deliver rotational motion of the worm wheel, the rotational motion the first gear, the rotational motion of the second gear to swivel a speaker box and the rotation of the second gear to detect a swivel degree of the speaker box. A guide axis(16) for the insertion of the first gear is included, and a spring(17) to push the first pinion is installed in an upper part of the guide axis. A first knurl(14b') is radially formed in a low surface of the first pinion. And a second knurl(14a') is formed in a part contacting with a low surface of the first knurl.

Description

Swivel Apparatus for Speaker System

The present invention relates to an apparatus for adjusting the position of a speaker system, and more particularly, it is applied to an apparatus for reproducing sound, such as a television or an audio system, and the position of the speaker system is more suited to the type of sound to be reproduced. Speakers that make adjustment of the speaker system more convenient by allowing the user to manually adjust the position of the speaker system to the desired position, while allowing the speaker system to automatically return to the position before adjustment. A swivel device of the system.

Conventionally known speaker systems are installed on both sides of the television so that the position of the speaker system varies according to the broadcast that the user is watching, so that the viewer can enjoy better sound quality. A perspective view of a television with a typical speaker system.

Referring to FIG. 1, if the viewer is watching a music broadcast, the position of the speaker system can be completely inserted into the television so that it cannot be seen from the front of the television. If the viewer is mainly listening to sound while watching a drama, the speaker system is properly rotated. You can get outside to hear better sound, but the angle of rotation of the speaker system can depend on the type of broadcast you are listening to.

FIG. 2 is an exploded perspective view of the speaker system swivel device shown in FIG. 1.

Referring to FIG. 2, the speaker system 30 includes a speaker box 30 including a lower speaker box 30a and an upper speaker box 30b such that a speaker is inserted into an inner side to enable turning according to a user's preference. The speaker holder 20 for fixing the 30, and the speaker rotating shaft 21 is fastened to the speaker holder 20 so that the external force is transmitted to the speaker box 30 so that the speaker box 30 is swiveled. ), A rotating shaft support 22 for fixing the speaker rotating shaft 21 to the speaker holder 20, and a driving unit 40 for converting the applied power into mechanical energy when the power is applied.

On the other hand, the mechanical energy generated by the drive unit 40 is the first bevel gear (43b) formed at a predetermined position of the drive unit 40 and the second bevel gear (21a) provided in the speaker rotation shaft (21). It is transmitted to the speaker box 30 through the speaker box 30 is to turn.

Referring to the operation of the swivel device of the speaker system having such a configuration, when the power is applied to the drive unit 40, the rotational force of the motor (not shown) installed in the drive unit 40 is directly transmitted through the first bevel gear 43b. It is transmitted to the 2nd bevel gear 21a. In addition, the speaker rotating shaft 21 is rotated by the movement of the second bevel gear 21a, and the speaker box 30 fixed together with the speaker rotating shaft 21 is also rotated in the same manner.

However, such a swivel device of the conventional speaker system simply consists of a configuration in which the speaker is turned back and forth when the motor installed in the drive unit 40 is operated by an externally applied power source, and the drive unit 40 is applied when an external shock is applied. ), There was a high possibility of being damaged, and there was an inconvenience such as being unable to manipulate the position of the speaker system by manual operation.

The present invention has been made to solve such a problem, and can not only automatically adjust the position of the speaker system by applying power, but also manually operate the swing angle of the speaker system, and An object of the present invention is to provide a swivel device of a speaker system that can securely hold a speaker.

1 is a perspective view of a television employing a rotary speaker system.

Figure 2 is an exploded perspective view of a conventional speaker system swivel device.

3 is a perspective view illustrating an internal configuration of a drive unit according to the present invention.

4A and 4B are diagrams illustrating a first null and a second null in the present invention.

5A and 5B are cross-sectional views illustrating the operation of the first pinion and the first spur gear in the drive unit when the external force and the rotational force of the motor are respectively applied.

<Description of the symbols for the main parts of the drawings>

10, 40: drive unit 11: motor 12: worm gear

12a: worm 12b: worm wheel 13: the third gear

13a: 3rd spur gear 13b, 43b: 1st bevel gear

14 First Gear 14a First Spur Gear 14a 'Second Board

14b ': 1st null 14b: 1st pinion 16: guide shaft

17 spring 18 second gear 18a second spur gear

18b: 2nd pinion 19: 4th gear 19a: sensor part

19b: fourth spur gear 20: speaker holder 21: speaker rotation shaft

21a: second bevel gear 22: rotary shaft support 30: speaker box

30a: lower speaker box 30b: upper speaker box

In order to achieve this object, the swivel device of the speaker system according to the present invention has a board formed in each of the parallel contact surfaces in the drive unit so that the drive unit is not damaged by the rotational movement of the speaker box generated by the external force. It characterized in that it comprises a first gear consisting of a first pinion and a first spur gear for the intermittent rotational movement is transmitted.

As mentioned, the present invention is characterized by achieving an object of the present invention by characteristically improving the internal configuration of the drive unit, which will be described based on the specific embodiments of the present invention.

However, when necessary to describe the configuration of the present invention, the same reference numerals are used for the same members in different drawings.

3 is a perspective view illustrating an internal configuration of a drive unit according to the present invention.

Referring to FIG. 3, the present invention provides a motor 11 for applying electric power to convert electrical energy into mechanical kinetic energy, and a worm 12a and a worm wheel 12b for transmitting rotational energy of the motor 11. Worm gear 12, a first gear 14 made of a first spur gear 14a and a first pinion 14b for transmitting the rotational motion of the worm wheel 12b, and a first gear ( The second gear 18 made up of the second spur gear 18a and the second pinion 18b for transmitting the rotational motion of 14 and the rotational motion of the second tooth 18 are transmitted to the speaker box 30. The rotation of the third gear 13 and the second gear 18 including the third spur gear 13a and the first bevel gear 13b and the rotation of the second gear 18 are transmitted to rotate the speaker box 30. The fourth gear 19 which consists of the sensor part 19a and the 4th spur gear 19b for finding out is contained.

In addition, a guide shaft 16 is included to allow the first gear 14 to be inserted, and a spring 17 for pushing the first pinion 14a with a constant force on the upper side of the guide shaft 16. Is installed, and a pinion (not shown) is formed below the worm wheel 12b so that the rotational motion of the worm wheel 12b is transmitted to the first spur gear 14a. Meshes with gears.

On the other hand, a first knurl 14b 'is radially formed on the lower surface of the first pinion 14b, and the first null 14b of the first pinion 14b is formed on the upper surface of the first spur gear 14a. A second null 14a 'is formed at a portion where the bottom surface of the') touches, so that the movement of the gear is intermittently transmitted. The operation of this configuration will be described in detail later.

4A and 4B illustrate the first null 14b 'and the second null 14a' as described above, wherein the shapes of the nulls 14b 'and 14a' are radially formed as described above. And, the angle of the irregularities formed on the board is about 40 to 50 degrees, the specific reason for selection will be described in detail later.

With reference to the configuration as described above, it will be described in detail the operation of the speaker system according to the present invention.

When the user applies an external force to the speaker system to manually adjust the angle of the speaker system, the pivoting motion of the speaker system is divided into the speaker box (see 30 in FIG. 2), the speaker axis of rotation (see 21 in FIG. 2), and the second bevel gear. It is transmitted to the first bevel gear 13b via 21a.

The rotational motion transmitted through the first bevel gear 13b is converted into the rotational motion of the third spur gear 13a formed integrally with the first bevel gear 13b, and the rotation of the third spur gear 13a. The motion is transmitted to the second pinion 18b, and when the second pinion 18b is rotated, it is changed to the rotational motion of the second spur gear 18a, which is integrally formed with the second pinion 18b, so that the first pinion 18b is rotated. Delivered to pinion 14b.

At this time, the rotational motion of the first pinion 14b is intermittently transmitted to the first spur gear 14a, and the rotational motion transmitted to the first pinion 14b due to the action of an external force is different from that of the first spur gear 14a. The worm wheel 12b should be transferred to the worm 12a, but in view of the characteristics of the worm gear 12 consisting of the worm wheel 12b and the worm 12a, the worm wheel 12b from the worm 12a. ), And the rotational motion of the first pinion 14b cannot be transmitted to the first spur gear 14a, because it forms a unidirectional relationship that cannot be transmitted from the worm wheel 12b to the worm 12a. do. Due to this unidirectional relationship, the second null 14a 'formed on the upper surface of the first spur gear 14a and the first null 14b' formed on the lower surface of the first pinion 14b are twisted with each other. Will be.

On the other hand, in the third gear 13, the rotational motion due to the external force transmitted through the first bevel gear 13b is large and small between the third spur gear 13a and the second pinion 18b. Due to the relationship, the number of revolutions in the second pinion 18b is generated more than the number of revolutions of the first bevel gear 13b. Similarly, the rotational motion transmitted to the second pinion 18b is rotated more than the second pinion 18b in the first pinion 14b due to the magnitude relationship between the second spur gear 18a and the first pinion 14b. Allow the number to be generated.

Due to this configuration, when the rotational speed and torque are inversely proportional to each other, which is a general relationship of the force due to the gears, it is possible to transmit torque much lower than the first bevel gear 13b to the first pinion 14b. , The rotational motion transmitted from the first pinion 14b to the first spur gear 14a is caused by the first null 14b 'and the second null 14a' due to the force transmission relationship in one direction of the worm gear 12. In order to maintain the relationship, the faulty gear prevents the entire gear from being damaged.

On the other hand, the rotational motion of the second spur gear 18a is configured to be transmitted to the fourth gear 19, so that the sensor unit 19a installed to rotate at the same angle as the fourth spur gear 19b is also provided. By rotating, the sensor unit 19a senses the degree of rotation of the fourth spur gear 19b so that the speaker box 30 can be known in accordance with the predetermined degree, and the degree of rotation When the speaker box 30 is to be restored to its original state after being stored in the microcomputer built in the main body, power corresponding to the angle to be rotated is applied to the motor 11 so that the speaker box 30 is returned to the original state. To the position of. In addition, the fourth spur gear 19b may have the same number of teeth with the same diameter as that of the second spur gear 18a, so that the rotation speed of the motor 11 may be found more conveniently.

The spring 17 provided on the upper side of the first pinion 14b has the effect of the external force even when the coupling between the nulls of the first pinion 14b and the first spur gear 14a is separated by the action of the external force. When there is no stopping force, the first pinion 14b is pushed again so that the second null 14a 'and the first null 14b' are engaged. Therefore, the rotational motion of the motor 11 generated by the external power is applied through the worm gear 12, the first gear 14, the second gear 18, and the third gear 13. It is transmitted to the two bevel gear 21a and the speaker rotating shaft 21, so that the speaker box 30 is turned so that the speaker can find its original position.

Referring to the drawings, the operation of the first pinion and the first spur gear when the speaker box is rotated by the external force as described above and when the power is applied from the outside and is restored to the original position of the speaker box will be described. This will be described in more detail.

FIG. 5A is a cross-sectional view illustrating the operation of the first pinion and the first spur gear in the drive unit when an external force is applied to the speaker box, and FIG. 5B is the first pinion and the first pinion when the power is applied to the motor to restore the original position. It is a figure explaining the operation | movement of one spur gear.

Referring to FIG. 5A, an external force is applied to the speaker box (see 30 in FIG. 2), the speaker rotating shaft (see 21 in FIG. 2), the second bevel gear (see 21A in FIG. 2) and the first bevel gear (FIG. 3). 13b), the second gear (see 18 of FIG. 3), and the rotational motion transmitted in turn to the first pinion 14b are engaged with the stationary worm wheel 12b so as not to rotate. 14a), the rotational movement is stopped. In order to stop the rotational movement, the first board 14b 'formed on the lower surface of the first pinion 14b and the upper surface of the first spur gear 14a are formed. The contact of the second null 14a 'is dropped, so that the rotational motion due to the external force ends at the first pinion 14b, and no further transmission is made.

At this time, the spring 17 allows the first pinion 14b to be supported downward by a constant force so that the first pinion 14b does not fall off the first spur gear 14a.

In particular, the third gear 13, the second gear 18, and the first gear 14 form teeth of the gear so that the rotation speed is sequentially increased, so that the first pinion 14b is rotated at a high speed so that the first gear 14b is rotated at high speed. Not only can the separation of the null 14b 'and the second null 14a' be easily performed, but also the torque can be reduced to prevent damage to the gear due to excessively strong external force.

Referring to FIG. 5B, a turning amount, that is, a rotation angle of the speaker box 30 that is turned by an external force is sensed by the sensor unit (see 19a of FIG. 3) and stored in a microcomputer embedded in the main body. Power is supplied to the motor (see 11 in FIG. 3) to the extent that the speaker box 30 can be rotated at its original installation angle, thereby providing the worm gear (see 12 in FIG. 3) and the first gear (see 14 in FIG. 3). ), The second gear (see 18 in FIG. 3), and the third gear (see 13 in FIG. 3) to be transferred to the second bevel gear (see 21a in FIG. 2), resulting in the speaker box 30 being In this case, the first null 14b 'formed on the lower surface of the first pinion 14b and the second null 14a' formed on the upper surface of the first spur gear 14a are engaged with each other. do.

At this time, unlike in the case of FIG. 5A, the worm wheel 12b does not act as a factor preventing the rotational motion, and as a general property of the worm gear 12, the first rotation is performed by the property of decelerating the high speed rotational motion at a low speed. In the state where the null 14b 'and the second null 14a' are engaged with each other, rotational motion can be transmitted from the first spur gear 14a to the first pinion 14b.

On the other hand, the shape of the first null 14b 'and the second null 14a' is provided radially, and the angle at which the null is formed facilitates the engagement of the first spur gear 14a and the first pinion 14b. In order to minimize noise, it is about 40 to 50 degrees, but it should be considered that it is formed to have the same effect while having a certain range.

In addition, the swivel device of the speaker system according to the present invention as described above may be different depending on the number of teeth of the specific gear and the speaker system is applied, and may be characteristically different depending on the case.

The present invention is not limited to the embodiments as described above, and those skilled in the art will understand the specific embodiments of the present invention by adding, changing, and selecting components. Creating is easy.

The swivel device of the speaker system according to the present invention can prevent the gears, etc. provided in the driving unit from being damaged by the action of an external force, and can manually adjust the turning angle of the driving unit to more conveniently adjust the turning angle of the speaker system desired by the user. It can be matched with the effect that you can enjoy a better sound.

In addition, since the position of the speaker system operated by the user by the external force is configured to be conveniently moved to the position before the user operates, there is an effect that can be more convenient when the user uses the speaker system.

Claims (8)

In order to prevent the driving unit from being damaged by the rotational movement of the speaker box generated by the external force, the first and second knurls are formed on each parallel contact surface in the driving unit to rotate the movement due to the external force. A swivel device of a speaker system, comprising a first gear comprising a first pinion and a first spur gear for intermittent transmission. The method of claim 1, Speaker system, characterized in that the first spur gear is provided with a worm gear for transmitting a rotational motion from the worm to the first spur gear, but the rotational motion of the first spur gear can not be transmitted to the worm. Swivel device. The method of claim 1, In order to prevent the first pinion from receiving the rotational motion of the speaker box at a higher rotational speed and preventing damage to the driving part, the rotational motion from the second bevel gear moving within the driving part is the same as the turning angle of the speaker box. And a second gear for receiving the third gear and a second gear for transmitting the rotational motion of the third gear to the first pinion at a higher rotation speed. The method of claim 3, wherein A fourth gear including a sensor unit is configured to receive the rotational motion of the second spur gear constituting the second gear to sense an amount of rotational movement of the speaker system and to return the speaker system to its original position. Swivel device of the speaker system, characterized in that comprises. The method of claim 4, wherein The turning angle is detected and stored due to the rotational movement of the speaker box detected through the sensor unit, characterized in that it comprises a micom for outputting the power to the speaker box to return to the original angle Swivel device of speaker system. The method of claim 1, In order to allow the driving force of the motor to be smoothly transmitted to the speaker box, an upper side of the first pinion is inserted with a second null and a first null respectively formed on the contact surface of the first pinion and the first spur gear to insert the first spur gear. Swivel device of the speaker system, characterized in that the spring is provided to provide a certain degree of restoring force in order to ensure that the rotational movement is smoothly transmitted to the first pinion. The method of claim 1, Swivel device of the speaker system, characterized in that formed in the same radial shape so that the first null and the second null can be inserted into each other. The method according to claim 1 or 7, The first null and the second null are radially formed so that the transmission of the rotational motion between the first pinion and the first spur gear is more smooth, the swivel device of the speaker system, characterized in that made in a low noise.