Digital audio power amplification sound equipment
By setting up a support structure on the housing of the digital audio power amplification speaker, including a slide chute and a support block, and using support plates and rubber pads to enhance the support effect, the problem of unstable position of the speaker during outdoor use is solved, significantly improving the stability of the speaker, avoiding pouring and damage to the upper parts.
Patent Information
- Application Number
- CN202420806289.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-18
AI Technical Summary
When used outdoors, the existing digital audio power amplification speakers are supported by only four universal wheels, and the audio position is unstable and easily dumped in strong winds or collisions, resulting in damage to the upper parts.
A digital audio power amplifier audio including a housing, an amplifier, a speaker, a tie rod, a universal wheel and a support structure is designed. By providing a support structure on the housing, including a slide chute and a support block, the support block can be slid downward to contact the ground after the housing position is determined, increasing stability, and enhancing the support effect through the support plate and rubber pad.
It effectively improves the stability of the sound and avoids pouring and damage to the upper parts caused by instability, especially in the case of strong winds or collisions.
Smart Images
Figure CN222655245U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of digital audio power amplifying speakers, in particular to a digital audio power amplifying speaker. Background Art
[0002] Audio refers specifically to an audio system that produces sound through a combination of electrical equipment. An audio amplifier is a device that reconstructs the input audio signal on the output element that produces sound. The reconstructed signal volume and power level must be ideal - truthful, effective and with low distortion.
[0003] Nowadays, many digital audio power amplifier speakers are used outdoors, such as square dancing and outdoor performances. In order to facilitate the movement of the speakers, universal wheels are installed at the bottom of the speakers. Although the universal wheels have a brake function, the speakers are supported by only four wheels, making the position of the speakers very unstable. In outdoor environments, if there is strong wind or someone collides with the speakers, the speakers are prone to tipping over, causing damage to the components of the speakers. Utility Model Content
[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a digital audio power amplifier speaker
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a digital audio power amplifier speaker, comprising a shell, an amplifier is fixedly connected inside the shell, two speakers are arranged on the shell, the amplifier and the speakers are connected by a connecting line, a pull rod is slidably connected to the shell, four universal wheels are rotatably connected to the shell, and a supporting structure is arranged on the shell, the supporting structure is mainly composed of two slide grooves, the two slide grooves are respectively opened on both sides of the shell, and a support block is slidably connected in the slide groove.
[0006] The effect achieved by the above components is: the amplifier converts the analog audio signal into a PWM pulse signal, and then uses the PWM pulse signal to control the on and off of the high-power switching device. Finally, the amplified PWM signal is removed from the carrier frequency through a low-pass filter to restore the original baseband audio signal, and the filtered and amplified analog signal is used to drive the speaker. The shell can be easily moved through the pull rod and the universal wheel. After the position of the shell is determined, the brake on the universal wheel is stepped on to limit the universal wheel. At this time, the two support blocks can be slid downward so that the two support blocks are in contact with the ground to support the shell and enhance the stability of the shell, thereby avoiding the situation where the position of the speaker is very unstable due to the support of only four wheels. In an outdoor environment, if there is strong wind or someone collides with the speaker, the speaker is prone to tipping over, causing damage to the components on the speaker.
[0007] Preferably, a support plate is provided at one end of the support block, and a rubber pad is fixedly connected to the support plate.
[0008] The effects achieved by the above components are: the support plate can increase the support area with the ground, and the rubber pad can enhance the friction with the ground, thereby enhancing the support effect on the shell.
[0009] Preferably, two sliding blocks are fixedly connected to the support block, two sliding grooves are provided on the support plate, and the sliding blocks are slidably connected to the sliding grooves.
[0010] The effect achieved by the above components is: when supporting, the two support plates can be slid outward so that the support plates are located on both sides of the shell to enhance the supporting effect. During the process of moving the shell, the two support plates can be slid inward so that the support plates are retracted under the shell.
[0011] Preferably, two L-shaped plates are fixedly connected to the lower surface of the shell.
[0012] The effect achieved by the above components is that the two support plates can be slid inwardly and can be stuck on the two L-shaped plates, thereby limiting the support block and preventing the support block from sliding down during the movement of the shell.
[0013] Preferably, a first spring is fixedly connected to the inner wall of the slide groove, and one end of the first spring is fixedly connected to the support block.
[0014] The effect achieved by the above components is that when the support plate contacts the ground, the first spring is in a contracted state, so the rebound force of the first spring acts on the support block, which can further enhance the support effect.
[0015] Preferably, a mounting structure is provided on the shell, and the mounting structure is mainly composed of two mounting grooves, the mounting grooves are opened on the shell, ten mounting columns are fixedly connected to the shell, five circular grooves are opened on the speaker, and the mounting columns are adapted to the circular grooves.
[0016] The effect achieved by the above components is: the speaker is inserted into the installation groove, and a plurality of installation columns are respectively inserted into the corresponding circular grooves, so that the speaker can be quickly installed.
[0017] The effect achieved by the above components is that after the speaker is installed, the two clamping blocks can be rotated so that the clamping blocks are clamped on the shell, which can enhance the installation effect of the speaker.
[0018] The effect achieved by the above components is: rotating the block to make it Figure 4 In the middle state, the second spring is in a twisted state, so when the speaker is inserted into the installation slot, the two blocks are stuck on the shell under the action of the rebound force of the second spring, making the operation more convenient.
[0019] Compared with the prior art, the advantages and positive effects of the utility model are that, in the utility model, by setting a support structure, after the position of the shell is determined, the brake on the universal wheel is stepped on to limit the universal wheel, and at this time, the two support blocks can be slid downward so that the two support blocks are in contact with the ground to support the shell and enhance the stability of the shell. The support plate can increase the support area with the ground, and the rubber pad can enhance the friction with the ground, thereby enhancing the support effect on the shell. When supporting, the two support plates can be slid outward so that the support plates are located on both sides of the shell to enhance the support effect. In the process of moving the shell, The two support plates can be slid inward so that the support plates are retracted under the shell. The two support plates can be slid inward and stuck on the two L-shaped plates, so as to limit the support block and prevent it from sliding down during the movement of the shell. When the support plate contacts the ground, the first spring is in a contracted state, so the rebound force of the first spring acts on the support block, which can further enhance the supporting effect, thereby avoiding the situation where the position of the speaker is very unstable due to being supported by only four wheels. In an outdoor environment, if there is strong wind or someone collides with the speaker, the speaker is prone to tipping over, resulting in damage to components on the speaker. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A three-dimensional structural diagram of a digital audio power amplifier speaker is proposed for the utility model;
[0021] Figure 2 A three-dimensional structural diagram of a digital audio power amplifier speaker from another perspective is provided for the utility model;
[0022] Figure 3 A partial schematic diagram of a supporting structure of a digital audio power amplifier speaker proposed by the utility model;
[0023] Figure 4 The utility model proposes a digital audio power amplifier speaker Figure 3 Enlarged view of part A.
[0024] Legend: 1. Shell; 2. Amplifier; 3. Speaker; 4. Pull rod; 5. Universal wheel; 6. Support structure; 61. Slide groove; 62. Support block; 63. Support plate; 64. Sliding block; 65. Sliding groove; 66. Rubber pad; 67. First spring; 68. L-shaped plate; 7. Mounting structure; 71. Mounting column; 72. Round groove; 73. Fixed plate; 74. Rotating shaft; 75. Block; 76. Second spring; 77. Mounting groove. DETAILED DESCRIPTION
[0025] Embodiment 1, as Figure 1As shown, a digital audio power amplifier speaker comprises a shell 1, an amplifier 2 is fixedly connected inside the shell 1, two speakers 3 are arranged on the shell 1, the amplifier 2 and the speakers 3 are connected by a connecting line, a pull rod 4 is slidably connected to the shell 1, and four universal wheels 5 are rotatably connected to the shell 1.
[0026] Reference Figure 2 and Figure 3 A support structure 6 is provided on the housing 1. The support structure 6 is mainly composed of two slide grooves 61. The two slide grooves 61 are respectively opened on both sides of the housing 1. A support block 62 is slidably connected in the slide groove 61. The amplifier 2 converts the analog audio signal into a PWM pulse signal, and then uses the PWM pulse signal to control the on and off of the high-power switch device. Finally, the amplified PWM signal is removed from the carrier frequency through a low-pass filter to restore the original baseband audio signal. The filtered amplified analog signal drives the speaker 3. The housing can be conveniently adjusted through the pull rod 4 and the universal wheel 5. 1 is moved. After the position of the housing 1 is determined, the brake on the universal wheel 5 is stepped on to limit the universal wheel 5. At this time, the two support blocks 62 can be slid downward so that the two support blocks 62 are in contact with the ground to support the housing 1 and enhance the stability of the housing 1, thereby avoiding the situation that the position of the speaker is very unstable due to the support of the speaker by only four wheels. In an outdoor environment, if there is strong wind or someone collides with the speaker, the speaker is prone to tipping over, resulting in damage to the components on the speaker. A support plate 63 is provided at one end of the support block 62, and the support plate 63 is provided at one end of the support block 62. 3 is fixedly connected with a rubber pad 66, the support plate 63 can increase the support area with the ground, the rubber pad 66 can enhance the friction with the ground, thereby enhancing the support effect on the shell 1, the support block 62 is fixedly connected with two sliding blocks 64, the support plate 63 is provided with two sliding grooves 65, the sliding block 64 is slidably connected with the sliding groove 65, the two support plates 63 can be slid outwards during support, so that the support plates 63 are located on both sides of the shell 1, and the support effect is enhanced, and in the process of moving the shell 1, the two support plates 63 can be slid inwards so that the support plates 63 are retracted. Under the shell body 1, two L-shaped plates 68 are fixedly connected to the lower surface of the shell body 1. The two support plates 63 are slid inward and can be stuck on the two L-shaped plates 68, thereby limiting the support block 62 to prevent the support block 62 from sliding down during the movement of the shell body 1. A first spring 67 is fixedly connected to the inner wall of the slide groove 61, and one end of the first spring 67 is fixedly connected to the support block 62. When the support plate 63 contacts the ground, the first spring 67 is in a contracted state, so the rebound elastic force of the first spring 67 acts on the support block 62, which can further enhance the support effect.
[0027] Reference Figure 2 and Figure 4The housing 1 is provided with a mounting structure 7, which is mainly composed of two mounting grooves 77. The mounting grooves 77 are provided on the housing 1. Ten mounting posts 71 are fixedly connected to the housing 1. Five circular grooves 72 are provided on the speaker 3. The mounting posts 71 are adapted to the circular grooves 72. The speaker 3 is inserted into the mounting grooves 77. At the same time, several mounting posts 71 are respectively inserted into the corresponding circular grooves 72. The speaker 3 can be quickly installed. After the speaker 3 is installed, the two clamping blocks 75 can be rotated so that the clamping blocks 75 are clamped on the housing 1. The installation effect of the speaker 3 can be enhanced. The clamping blocks 75 are rotated to make them present. Figure 4 In the middle state, the second spring 76 is in a twisted state, so when the speaker 3 is inserted into the mounting groove 77, the two blocks 75 are stuck on the housing 1 under the action of the rebound force of the second spring 76, making the operation more convenient.
[0028] Working principle: amplifier 2 converts analog audio signal into PWM pulse signal, and then uses PWM pulse signal to control the on and off of high-power switch device. Finally, the amplified PWM signal is removed from carrier frequency by low-pass filter to restore the original baseband audio signal. The filtered and amplified analog signal drives speaker 3. The housing 1 can be conveniently moved by pull rod 4 and universal wheel 5. After the position of housing 1 is determined, the brake on universal wheel 5 is stepped on to limit the universal wheel 5. At this time, two support blocks 62 can be slid downward so that the two support blocks 62 contact with the ground to support the housing 1 and enhance the stability of housing 1, thereby avoiding the situation that the position of the speaker is very unstable due to the support of only four wheels. In outdoor environment, if there is strong wind or someone collides with the speaker, the speaker is prone to tip over, resulting in damage to the components of the speaker. Support plate 63 can increase the support area with the ground, and rubber pad 66 can enhance the contact with the ground The friction force of the first spring 67 is in a contracted state, so that the rebound force of the first spring 67 acts on the support block 62, which can further enhance the supporting effect of the shell 1. The two support plates 63 can be slid outward during support so that the support plates 63 are located on both sides of the shell 1 to enhance the supporting effect. In the process of moving the shell 1, the two support plates 63 can be slid inward so that the support plates 63 are retracted into the bottom of the shell 1. The two support plates 63 are slid inward so that they can be stuck on the two L-shaped plates 68, thereby limiting the support block 62 to prevent the support block 62 from sliding down during the movement of the shell 1. When the support plate 63 contacts the ground, the first spring 67 is in a contracted state, so the rebound force of the first spring 67 acts on the support block 62, which can further enhance the supporting effect. The speaker 3 is stuck in the installation groove 77, and the plurality of installation columns 71 are respectively stuck in the corresponding circular grooves 72, so that the speaker 3 can be quickly installed. After the speaker 3 is installed, the two clamping blocks 75 can be rotated so that the clamping blocks 75 are stuck on the shell 1, which can enhance the installation effect of the speaker 3. The clamping blocks 75 are rotated to make them Figure 4In the middle state, the second spring 76 is in a twisted state, so when the speaker 3 is inserted into the mounting groove 77, the two blocks 75 are stuck on the housing 1 under the action of the rebound force of the second spring 76, making the operation more convenient.
[0029] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.
Claims
1. A digital audio power amplifier speaker, comprising a housing (1), characterized in that: An amplifier (2) is fixedly connected inside the shell (1), two speakers (3) are arranged on the shell (1), the amplifier (2) and the speakers (3) are connected via a connecting line, a pull rod (4) is slidably connected to the shell (1), four universal wheels (5) are rotatably connected to the shell (1), a support structure (6) is arranged on the shell (1), the support structure (6) is mainly composed of two slide grooves (61), the two slide grooves (61) are respectively opened on both sides of the shell (1), and a support block (62) is slidably connected in the slide groove (61); A support plate (63) is provided at one end of the support block (62), and a rubber pad (66) is fixedly connected to the support plate (63); two sliding blocks (64) are fixedly connected to the support block (62), and two sliding grooves (65) are provided on the support plate (63), and the sliding blocks (64) are slidably connected to the sliding grooves (65); two L-shaped plates (68) are fixedly connected to the lower surface of the shell (1); a first spring (67) is fixedly connected to the inner wall of the sliding groove (61), and one end of the first spring (67) is fixedly connected to the support block (62).
2. The digital audio power amplifier speaker according to claim 1, characterized in that: The shell (1) is provided with a mounting structure (7), the mounting structure (7) mainly consisting of two mounting grooves (77), the mounting grooves (77) being provided on the shell (1), ten mounting columns (71) being fixedly connected to the shell (1), the speaker (3) being provided with five circular grooves (72), the mounting columns (71) being adapted to match the circular grooves (72).