Angle-adjustable vehicle-mounted sound box

Abstract

The invention relates to the technical field of vehicle-mounted facilities, in particular to an angle-adjustable vehicle-mounted sound box, which comprises a shell, a power amplifier body and a sound box circuit, and further comprises a dust cover shell bolted to the front surface of the shell, by starting the first motor and the second motor, the supporting column and the rotating column can be driven to rotate respectively to adjust the pitch angle and the horizontal angle of the power amplifier, so that the sound wave propagation direction can be accurately controlled, the sound intensity and frequency distribution received by a driver and passengers in the back row are more balanced, and the driving safety is improved. The sound wave can cover the whole compartment space to form a more three-dimensional sound field by reasonably adjusting the angle, so that all passengers can feel immersive auditory experience, and a driver can adjust the direction of the high-frequency sound wave and strengthen human voice or musical instrument details according to own preferences; the passengers in the back row can optimize low-frequency response and improve the bass shock.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted facilities, and particularly to a vehicle-mounted speaker with an adjustable angle. Background Art

[0002] In the past, the functions of traditional vehicle-mounted speakers were limited, and they could only play music through a memory card to meet basic listening needs. With the technological innovation in the speaker industry and the upgrading of consumer demands, modern vehicle-mounted speakers, while retaining traditional functions, have added new connection methods such as AUX and Bluetooth to achieve seamless interconnection with intelligent devices, enabling users to freely enjoy multi-platform music resources during driving and significantly enhancing the driving and riding entertainment experience.

[0003] Currently, in a vehicle-mounted speaker system, the power amplifier driven by the power amplifier is often installed at a fixed angle. This fixed angle design makes the high-frequency sound waves (with a frequency higher than 2 kHz) emitted by the power amplifier show extremely obvious directivity characteristics when sounding. Due to the physical characteristics of short wavelength and concentrated energy of high-frequency sound waves, they are more easily affected by direction and distance during propagation. When the power amplifier emits sound at a fixed angle, the propagation direction of the sound waves is relatively fixed, resulting in significant differences in the sound wave intensity and frequency distribution received at different positions of the driver and passengers. Summary of the Invention

[0004] The purpose of the present invention is to provide a vehicle-mounted speaker with an adjustable angle, which has the function of adjusting the horizontal angle and pitch angle of the power amplifier.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A vehicle-mounted speaker with an adjustable angle, including a housing, a power amplifier body, and a speaker circuit. A circular groove is opened on the front surface of the housing, and further includes:

[0006] A dust-proof cover shell bolted to the front surface of the housing. A circular shell is also fixed to one side of the power amplifier body. A fixing frame is further provided inside the housing. A support column is bolted to the bottom of the fixing frame, and the support column is rotatably connected to the inner wall of the housing;

[0007] A first motor bolted to the lower part inside the housing. The output shaft of the first motor is connected to the support column through a gear transmission. Vertical plates are bolted to both sides of the top of the fixing frame. A rotating column is rotatably connected to the surface of the vertical plate, and one end of the rotating column is bolted to the circular shell. A fixing rod is also bolted to one side of the fixing frame. A second motor is bolted to the top of the fixing rod. The output shaft of the second motor is connected to one group of the rotating columns through a gear transmission;

[0008] A first angle limiting mechanism, a first positioning component, a second angle limiting mechanism, and a second positioning component provided on the inner side of the housing.

[0009] Preferably, the first angle limiting mechanism includes a first frame plate and a first movable rod. The first frame plate is bolted to the inner wall of the housing. One end of the first movable rod is bolted to the support column, and the first movable rod is slidably connected to the inner wall of the first frame plate. First sensors are disposed through both sides of the first frame plate.

[0010] Preferably, the overall shape of the first frame plate is arc-shaped, and the first movable rod is L-shaped.

[0011] Preferably, the first positioning component includes a connecting plate and a first electric push rod. The number of the connecting plates is two groups and they are bolted to the bottom of the inner wall of the housing. The first electric push rod passes through the connecting plate and is fixed to the through portion thereof. The output shaft of the first electric push rod is bolted with a first clamping plate having an arc-shaped design. A first rubber ring is bonded to the surface of the support column.

[0012] Preferably, a plurality of vertical bars are also welded to the surface of the support column, and vertical grooves for cooperating with the vertical bars are formed on the inner wall surface of the first rubber ring.

[0013] Preferably, the second angle limiting mechanism includes a second frame plate having an arc-shaped design and a second movable rod having an L-shaped design. The second frame plate and one side of the fixing frame are fixed to each other through a connecting rod. Second sensors are disposed through both sides of the second frame plate, and the probe ends of the second sensors are located inside the second frame plate.

[0014] Preferably, the second positioning component includes a fixing member and a second electric push rod. The output shaft of the second electric push rod is bolted with a second clamping plate. A second rubber ring is bonded to the surface of the other group of rotating columns.

[0015] Preferably, the fixing member is composed of a fixing sleeve provided on the surface of the second electric push rod and a connecting rod.

[0016] Preferably, a plurality of transverse bars are also welded to the surface of the other group of rotating columns, and transverse grooves for cooperating with the transverse bars are formed on the inner wall surface of the second rubber ring.

[0017] Preferably, support rods are also bolted to both sides of the bottom of the fixing frame. The bottom ends of the support rods are bolted with balls, and the balls are in rolling connection with the bottom of the inner wall of the housing.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. By turning on the first motor and the second motor, the present invention can drive the support column and the rotating column to rotate respectively, so as to adjust the pitch angle and the horizontal angle of the power amplifier, thereby accurately controlling the sound wave propagation direction, making the sound intensity and frequency distribution received by the driver and the rear passengers more balanced, avoiding the thin or distorted sound perception caused by the difference in the sound wave propagation path, reasonably adjusting the angle can make the sound wave cover the entire carriage space, form a more three-dimensional sound field, and enable all passengers to feel an immersive auditory experience. The driver can adjust the high-frequency sound wave direction according to his own preference to enhance the vocal or instrument details; while the rear passengers can optimize the low-frequency response and enhance the bass shock feeling.

[0020] 2. Through the design of the first frame plate, the first movable rod, the second frame plate, the second movable rod, the first sensor and the second sensor, it is used to limit the adjustment angle of the power amplifier, and by turning on the first electric push rod and the second electric push rod, the first clamping plate and the second clamping plate are respectively attached to the first rubber ring and the second rubber ring to position the support column and the rotating column, preventing the situation that the angle of the power amplifier changes under the bump of the car, and improving the stability after the angle adjustment is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the present invention;

[0022] Figure 2 is a structural schematic diagram of the present invention after the dust cover is removed;

[0023] Figure 3 is a sectional structural schematic diagram of the housing of the present invention;

[0024] Figure 4 is a partial structural schematic diagram of the present invention;

[0025] Figure 5 is a structural schematic diagram of the fixing bracket and its surface in the present invention;

[0026] Figure 6 is a structural schematic diagram of the first positioning component in the present invention;

[0027] Figure 7 is a partial structural schematic diagram of the first angle limiting mechanism in the present invention;

[0028] Figure 8 is a partial structural schematic diagram of the second angle limiting mechanism in the present invention;

[0029] Figure 9 is a partial structural schematic diagram of the second positioning component in the present invention.

[0030] In the figure: 1. housing; 2. dust-proof cover; 3. power amplifier body; 4. circular shell; 5. fixing bracket; 6. support column; 7. first motor; 8. vertical plate; 9. rotating column; 10. fixing rod; 11. second motor; 12. first angle limiting mechanism; 121. first frame plate; 122. first movable rod; 123. first sensor; 13. first positioning component; 131. connecting plate; 132. first electric push rod; 133. first clamping plate; 134. first rubber ring; 135. vertical strip; 14. second angle limiting mechanism; 141. second frame plate; 142. second movable rod; 143. second sensor; 15. second positioning component; 151. fixing part; 152. second electric push rod; 153. second clamping plate; 154. second rubber ring; 155. horizontal strip; 16. support rod; 17. ball; 18. speaker circuit. Detailed implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-9 , an adjustable-angle in-vehicle speaker, including a housing 1, a power amplifier body 3 and a speaker circuit 18. The speaker circuit 18 includes the circuit of the speaker and an intelligent control module. A circular groove is opened on the front surface of the housing 1 to provide a movement range for the power amplifier body 3. The speaker further includes a first angle limiting mechanism 12, a first positioning component 13, a second angle limiting mechanism 14 and a second positioning component 15 arranged inside the housing 1. A dust-proof cover 2 is bolted to the front surface of the housing 1. The dust-proof cover 2 is used to prevent dust from entering the housing 1 from the front surface. A circular shell 4 is fixed to one side of the power amplifier body 3 to carry the circuit inside the power amplifier. A fixing bracket 5 is also arranged inside the housing 1. A support column 6 is bolted to the bottom of the fixing bracket 5, and the support column 6 is rotatably connected to the inner wall of the housing 1, so that the support column 6 and the fixing bracket 5 can rotate. A first motor 7 is bolted to the lower part inside the housing 1. The output shaft of the first motor 7 is connected to the support column 6 through a gear drive. Vertical plates 8 are bolted to both sides of the top of the fixing bracket 5. A rotating column 9 is rotatably connected to the surface of the vertical plate 8, and one end of the rotating column 9 is bolted to the circular shell 4, so that the circular shell 4 can rotate and change the pitch angle of the power amplifier body 3. A fixing rod 10 is also bolted to one side of the fixing bracket 5. A second motor 11 is bolted to the top of the fixing rod 10. The output shaft of the second motor 11 is connected to one group of rotating columns 9 through a gear drive.

[0033] The first angle limiting mechanism 12 includes a first frame plate 121 and a first movable rod 122. The first frame plate 121 is bolted to the inner wall of the housing 1. The overall shape of the first frame plate 121 is arc-shaped. The first movable rod 122 is L-shaped. One end of the first movable rod 122 is bolted to the support column 6, and the first movable rod 122 is slidably connected to the inner wall of the first frame plate 121. When the support column 6 rotates, it can drive the first movable rod 122 to move along the inner wall of the first frame plate 121 in an arc. First sensors 123 are respectively arranged through both sides of the first frame plate 121. The first sensors 123 are pressure-triggered sensors and are electrically connected to the intelligent control module in the speaker circuit 18. The first positioning assembly 13 includes a connecting plate 131 and a first electric push rod 132. The number of the connecting plates 131 is two groups and they are bolted to the bottom of the inner wall of the housing 1. The first electric push rod 132 passes through the connecting plate 131 and is fixed to the through part thereof, so as to fix the first electric push rod 132 below the interior of the housing 1. The output shaft of the first electric push rod 132 is bolted with a first clamping plate 133 with an arc shape. A first rubber ring 134 is adhered to the surface of the support column 6. A plurality of vertical bars 135 are also welded to the surface of the support column 6. Vertical grooves for cooperating with the vertical bars 135 are formed on the inner wall surface of the first rubber ring 134. The vertical bars 135 are located inside the vertical grooves, increasing the connection points between the first rubber ring 134 and the support column 6 and enhancing the fixing stability.

[0034] The second angle limiting mechanism 14 includes a second frame plate 141 designed in an arc shape and a second movable rod 142 designed in an L shape. One side of the second frame plate 141 and the fixed frame 5 are fixed to each other through a connecting rod. One end of the connecting rod is bolted to the fixed frame 5, and the other end is bolted to the second frame plate 141 to fix the second frame plate 141 and the fixed frame 5 to each other. Both sides of the second frame plate 141 are provided with second sensors 143 penetrating therethrough, and the probe ends of the second sensors 143 are located inside the second frame plate 141. The second sensors 143 are pressure-triggered sensors. The first sensor 123 is electrically connected to the intelligent control module in the speaker circuit 18. The second positioning assembly 15 includes a fixing member 151 and a second electric push rod 152. The fixing member 151 is composed of a fixing sleeve provided on the surface of the second electric push rod 152 and a connecting rod. One end of the connecting rod is bolted to the fixed frame 5, and the other end is bolted to the fixing sleeve to fix the second electric push rod 152. The output shaft of the second electric push rod 152 is bolted with a second clamping plate 153. The second frame plate 141 is designed in an arc shape. A second rubber ring 154 is adhered to the surface of the other set of rotating columns 9. A transverse bar 155 is also welded to the surface of the other set of rotating columns 9. A transverse groove for cooperating with the transverse bar 155 is formed on the inner wall surface of the second rubber ring 154. The transverse bar 155 enters the inside of the transverse groove, increasing the connection stability between the rotating column 9 and the inner wall of the second rubber ring 154, making the second rubber ring 154 not easily fall off.

[0035] When working, through the intelligent module in the speaker circuit 18, electrical control is implemented on the first motor 7, the second motor 11, the first electric push rod 132, and the second electric push rod 152. The first motor 7 is turned on, and its output shaft drives the support column 6 to rotate through a gear. Then the support column 6 drives the upper fixed frame 5, the circular shell 4, and the power amplifier body 3 to rotate, thereby changing the horizontal angle of the power amplifier body 3. At the same time, during the rotation of the support column 6, it can drive the first movable rod 122 to move along the inner wall of the first frame plate 121 in an arc. When touching the first sensors 123 on both sides, the first motor 7 is turned off to prevent the rotation angle from exceeding the range (the first motor 7 cannot continuously rotate in the direction of this side, but can rotate in the reverse direction until the first movable rod 122 touches the other set of first sensors 123), limiting the horizontal angle of the power amplifier body 3 within the range of the first frame plate 121 and preventing the angle from exceeding the limit and causing the power amplifier body 3 to be aligned with the inside of the housing 1. After the horizontal angle is adjusted, the first electric push rod 132 is turned on, and its output shaft extends to drive the first clamping plate 133 to move, making the first clamping plate 133 fit on the surface of the first rubber ring 134. Under the action of friction, the support column 6 is positioned to prevent the horizontal angle direction where the power amplifier body 3 is aligned from changing under the condition of vehicle shaking.

[0036] When the second motor 11 is turned on, its output shaft drives the rotating column 9 on one side to rotate through a gear. The rotating column 9 drives the circular shell 4 and the power amplifier body 3 to rotate, so as to change the pitching angle of the power amplifier body 3. At the same time, the rotating column 9 on the other side drives the second movable rod 142 to move in an arc along the inner wall of the second frame plate 141. When the second movable rod 142 touches the second sensor 143, the second motor 11 is turned off (the second motor 11 cannot continuously rotate in the direction of this side, but can rotate in the reverse direction until the second movable rod 142 touches another group of second sensors 143). Thus, the pitching angle of the power amplifier body 3 can be restricted and limited within the angular range of the second frame plate 141. Then, the second electric push rod 152 is turned on, and its output shaft extends to drive the second clamping plate 153 to move. The second clamping plate 153 fits on the surface of the second rubber ring 154. Under the action of friction, the rotating column 9 is locked, and the pitching angle of the power amplifier body 3 is positioned to prevent the pitching angle of the power amplifier body 3 from changing due to the bumping of the vehicle. On both sides of the bottom of the fixing frame 5, support rods 16 are also bolted. The bottom ends of the support rods 16 are bolted with balls 17, and the balls 17 are in rolling connection with the bottom of the inner wall of the housing 1. During the rotation of the fixing frame 5, it can drive the balls 17 to move along the bottom of the inner wall of the housing 1 through the support rods 16, increasing the rotational stability of the fixing frame 5.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable-angle in-vehicle speaker, including the housing (1), the power amplifier body (3) and the speaker circuit (18). A circular groove is provided on the front surface of the housing (1), and it is characterized in that, It further includes: A dust-proof cover shell (2) bolted to the front of the housing (1). One side of the power amplifier body (3) is also fixed with a circular shell (4). A fixing frame (5) is further provided inside the housing (1). A support column (6) is bolted to the bottom of the fixing frame (5), and the support column (6) is rotatably connected to the inner wall of the housing (1); A first motor (7) bolted to the lower part inside the housing (1). The output shaft of the first motor (7) is connected to the support column (6) through a gear transmission. Vertical plates (8) are bolted to both sides of the top of the fixing frame (5). A rotating column (9) is rotatably connected to the surface of the vertical plate (8), and one end of the rotating column (9) is bolted to the circular shell (4). A fixing rod (10) is also bolted to one side of the fixing frame (5). A second motor (11) is bolted to the top of the fixing rod (10). The output shaft of the second motor (11) is connected to one group of the rotating columns (9) through a gear transmission; A first angle limiting mechanism (12), a first positioning assembly (13), a second angle limiting mechanism (14), and a second positioning assembly (15) provided inside the housing (1).

2. The adjustable-angle in-vehicle speaker according to claim 1, wherein: The first angle limiting mechanism (12) includes a first frame plate (121) and a first movable rod (122). The first frame plate (121) is bolted to the inner wall of the housing (1). One end of the first movable rod (122) is bolted to the support column (6), and the first movable rod (122) is slidably connected to the inner wall of the first frame plate (121). First sensors (123) are penetrated through both sides of the first frame plate (121).

3. The adjustable-angle in-vehicle speaker according to claim 2, wherein: The whole of the first frame plate (121) is designed in an arc shape, and the first movable rod (122) is designed in an L shape.

4. The adjustable- angle in- vehicle speaker according to claim 1, wherein: The first positioning assembly (13) includes connecting plates (131) and a first electric push rod (132). The number of the connecting plates (131) is two groups and they are bolted to the bottom of the inner wall of the housing (1). The first electric push rod (132) penetrates through the connecting plate (131) and is fixed to the penetration part. The output shaft of the first electric push rod (132) is bolted with a first clamping plate (133) designed in an arc shape. A first rubber ring (134) is bonded to the surface of the support column (6).

5. The adjustable-angle in-vehicle speaker according to claim 4, wherein: A plurality of vertical bars (135) are also welded to the surface of the support column (6). Vertical grooves for cooperating with the vertical bars (135) are formed on the inner surface of the first rubber ring (134).

6. The adjustable-angle in-vehicle speaker according to claim 1, wherein: The second angle limiting mechanism (14) includes a second frame plate (141) designed in an arc shape and a second movable rod (142) designed in an L shape. The second frame plate (141) is fixed to one side of the fixing frame (5) through a connecting rod. Second sensors (143) are penetrated through both sides of the second frame plate (141), and the probe ends of the second sensors (143) are located inside the second frame plate (141).

7. The adjustable-angle in-vehicle speaker according to claim 1, wherein: The second positioning component (15) includes a fixing member (151) and a second electric push rod (152). A second clamping plate (153) is bolted to the output shaft of the second electric push rod (152). A second rubber ring (154) is adhesively bonded to the surface of the other group of rotating columns (9).

8. The adjustable-angle in-vehicle speaker according to claim 7, wherein: The fixing member (151) is composed of a fixing sleeve provided on the surface of the second electric push rod (152) and a connecting rod.

9. The adjustable-angle in-vehicle speaker according to claim 7, wherein: A transverse bar (155) is also welded to the surface of the other group of rotating columns (9). A transverse groove for cooperating with the transverse bar (155) is formed on the inner wall surface of the second rubber ring (154).

10. The adjustable-angle in-vehicle speaker according to claim 1, characterized in that: Support rods (16) are bolted to both sides of the bottom of the fixing frame (5). A ball (17) is bolted to the bottom end of the support rod (16), and the ball (17) is in rolling connection with the bottom of the inner wall of the housing (1).

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