High-stability power amplifier

Abstract

The utility model relates to the related field of power amplifiers, in particular to a high-stability power amplifier which comprises a power amplifier body, a protective seat, a cooling fan, an extension frame, a strip-shaped sliding hole, a threaded positioning cylinder, a threaded sleeve, a groove, an extrusion groove, an insertion rod, a clamping plate and the like. According to the utility model, the extension frame is arranged on the protection seat, the signal transmission cable passes through the threaded positioning cylinder, the threaded sleeve is rotated to enter the groove, the threaded sleeve drives the pressurization groove to enter the groove synchronously when entering the inner side of the groove, and the extrusion groove extrudes the insertion rod to move inwards when entering the inner side of the groove. The inserting rods drive the clamping plates to move inwards synchronously, and the clamping plates apply pressure to the cable when moving inwards, so that auxiliary positioning is provided for the cable, loosening of the signal transmission cable due to external acting force is reduced, and signal attenuation or distortion caused by cable loosening is reduced. The multifunctionality of the protection seat is improved, and the stability of the power amplifier in the signal transmission process is also improved.

Description

Technical Field

[0001] The utility model relates to the field of power amplifiers, and in particular to a high-stability power amplifier. Background Art

[0002] A power amplifier is an electronic device whose main function is to amplify the input electrical signal (such as an audio signal or a radio frequency signal) to a level sufficient to drive speakers, headphones or other loads (such as antennas). In short, it is used to enhance the signal strength so that the output signal can be effectively transmitted to the receiving end or converted into other forms of energy such as sound.

[0003] The existing publication number is: CN218499118U discloses a power amplifier, including a power amplifier body, a protective seat, a suction cup, a cooling fan and a heat sink. When the power amplifier body is working, the cooling fan is turned on, and the cooling fan will discharge the heat at the bottom of the power amplifier body from the heat sink to the bottom of the protective seat, which is convenient for rapid heat dissipation of the power amplifier body, avoids heat accumulation at the bottom, improves the stability of the power amplifier body, and is convenient to use.

[0004] This existing patent only provides a cooling fan in the protective seat to dissipate heat for the power amplifier and improve the stability of the power amplifier. The functionality of the protective seat is still relatively simple, and it is difficult to provide auxiliary positioning for the cables connected to the power amplifier terminals. During the use of the power amplifier, if the cables are subjected to external forces such as physical pulling or vibration, it is easy to cause the cables to loosen, which may easily cause the power amplifier signal to attenuate or distort, and thus easily affect the stability of the signal transmission process. Summary of the Invention

[0005] Therefore, in order to solve the above-mentioned deficiencies, the present invention provides a high-stability power amplifier to solve the above-mentioned technical problems.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical solution: a high-stability power amplifier, comprising a power amplifier body, and a protective seat mounted on the bottom end surface of the power amplifier body, wherein a plurality of heat dissipation fans are mounted on the inner side of the protective seat, and an extension frame is mounted on the top rear end of the protective seat;

[0007] The extension frame is provided with a strip-shaped sliding hole, in which a plurality of threaded positioning cylinders are slidably installed, and a threaded sleeve is threadedly installed on the rear end of the threaded positioning cylinder. The threaded sleeve is movably inserted into the inner side of the groove provided on the rear end surface of the threaded positioning cylinder, and an extrusion groove is provided on the inner front end of the threaded sleeve;

[0008] The inner diameter of the extrusion groove is gradually reduced from the front to the back, and an insertion rod is provided at each of the upper and lower ends of the inner side of the extrusion groove, and the two insertion rods are respectively fitted with the upper and lower ends of the inner side of the extrusion groove;

[0009] The insertion rod movably passes through the groove and the inner side of the threaded positioning cylinder, and the end of the insertion rod away from the extrusion groove is connected to the clamping plate set in the threaded positioning cylinder. The clamping plate is connected to the inner ring of the threaded positioning cylinder through a spring, and the spring is movably sleeved on the insertion rod.

[0010] Preferably, a plurality of groups of filter screens corresponding to the heat dissipation fans are installed in the protective seat, and each group of filter screens consists of two filter screens located at the upper and lower ends of the heat dissipation fan respectively.

[0011] Preferably, one end of the insertion rod close to the extrusion groove is a hemispherical structure protruding outward.

[0012] Preferably, the splint is an arc-shaped structure, and a rubber pad is adhered to the inner side of the splint.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides an extension frame on the protective seat, and a plurality of slidable threaded positioning cylinders are provided on the extension frame. The signal transmission cable passes through the threaded positioning cylinder, and the threaded sleeve is rotated to enter the groove. When the threaded sleeve enters the inner side of the groove, it drives the pressurizing groove to enter the groove synchronously. When the extrusion groove enters the inner side of the groove, it squeezes the insertion rod to move inward, and the insertion rod drives the clamping plate to move inward synchronously. The clamping plate applies pressure to the cable when moving inward, thereby providing auxiliary positioning for the cable, reducing the loosening of the signal transmission cable due to external force, reducing signal attenuation or distortion caused by cable loosening, improving the versatility of the protective seat, and also improving the stability of the power amplifier during signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic side view of the overall structure of the power amplifier of the present utility model;

[0016] Figure 2 This is a schematic side sectional structural diagram of the extension frame of the present utility model;

[0017] Figure 3 It is a rear view schematic diagram of the connection structure of the extension frame of the present invention.

[0018] The components include: power amplifier body 1, protective base 2, cooling fan 3, extension frame 4, filter 5, strip-shaped sliding hole 6, threaded positioning cylinder 7, threaded sleeve 8, groove 9, extrusion groove 10, insertion rod 11, clamping plate 12, spring 13, and rubber pad 14. DETAILED DESCRIPTION

[0019] In order to further explain the technical solution of the present invention, specific embodiments are described in detail below.

[0020] like Figure 1 As shown, the utility model provides a high-stability power amplifier, including a power amplifier body 1;

[0021] like Figures 1 to 3 As shown, this embodiment also includes a protective base 2 that is locked and fixed to the bottom end surface of the power amplifier body 1. Two heat dissipation fans 3 are locked and fixed on the inner side of the protective base 2, and an extension frame 4 is fixedly installed on the top rear end of the protective base 2.

[0022] The rear end surface of the extension frame 4 is provided with a strip-shaped sliding hole 6, in which a plurality of threaded positioning cylinders 7 are slidably installed. The threaded positioning cylinders 7 can move horizontally left and right along the inner side of the strip-shaped sliding hole 6. The rear end of the threaded positioning cylinder 7 is threadedly installed with a threaded sleeve 8. The threaded sleeve 8 is movably inserted into the inner side of the groove 9 provided on the rear end surface of the threaded positioning cylinder 7, and an extrusion groove 10 is provided on the inner front end of the threaded sleeve 8.

[0023] The inner diameter of the extrusion groove 10 is gradually reduced from front to back, and an insertion rod 11 is provided at each of the upper and lower ends of the inner side of the extrusion groove 10. The two insertion rods 11 are respectively fitted with the upper and lower ends of the inner side of the extrusion groove 10, so that the extrusion groove 10 can squeeze the insertion rods 11 inward when the extrusion groove 10 moves forward.

[0024] The insertion rod 11 is vertically movable and passes through the groove 9 and the inner side of the threaded positioning cylinder 7, and the end of the insertion rod 11 away from the extrusion groove 10 is connected to the clamping plate 12 provided in the threaded positioning cylinder 7. The clamping plate 12 is connected to the inner ring of the threaded positioning cylinder 7 through the spring 13, and the spring 13 is movably sleeved on the insertion rod 11;

[0025] The end of the insertion rod 11 close to the extrusion groove 10 is a hemispherical structure that bulges outward. Compared with a flat surface, the spherical surface can more effectively disperse the pressure of the contact point, thereby reducing sliding friction, thereby facilitating the extrusion groove 10 to more stably squeeze and push the insertion rod 11.

[0026] In this embodiment, the protective seat 2 is equipped with a plurality of groups of filters 5 corresponding to the heat dissipation fans 3. Each group of filters 5 is composed of two filters 5 located at the upper and lower ends of the heat dissipation fan 3 to reduce dust from entering the heat dissipation fan 3.

[0027] In this embodiment, the clamping plate 12 is an arc-shaped structure, which facilitates the clamping plate 12 to stably clamp the signal transmission cable, and a rubber pad 14 is attached to the inner side of the clamping plate 12 to reduce the wear of the cable caused by the clamping plate 12;

[0028] Specifically, when in use, move the threaded positioning cylinder 7 to align with the cable connection port of the power amplifier body 1, and then pass the external signal transmission cable through the threaded positioning cylinder 7 and connect it to the cable connection port of the power amplifier body 1;

[0029] Then, the threaded sleeve 8 is rotated so that the threaded sleeve 8 moves horizontally along the threaded positioning cylinder 7. When the threaded sleeve 8 moves, it drives the extrusion groove 10 to enter the groove 9. During the movement of the extrusion groove 10, the two insertion rods 11 are squeezed inward. The two insertion rods 11 respectively drive the two clamping plates 12 to move inward to apply clamping pressure to the signal transmission cable, thereby fixing the signal transmission cable, reducing the loosening or falling off of the signal transmission cable at the terminal of the power amplifier body 1, and improving the stability of the power amplifier during use. In addition, when the clamping plate 12 moves inward, it drives the spring 13 to elastically stretch, so that when the pressure exerted by the extrusion groove 10 on the insertion rod 11 is reduced, the clamping plate 12 is reset by the elastic force of the spring 13;

[0030] Furthermore, when the power amplifier body 1 is in use, the heat dissipation fan 3 can be started to dissipate heat from the power amplifier body 1 , thereby improving the stability of the power amplifier body 1 during use.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-stability power amplifier, comprising a power amplifier body; Its characteristics are: It also includes a protective seat installed on the bottom end surface of the power amplifier body, a plurality of heat dissipation fans are installed on the inner side of the protective seat, and an extension frame is installed on the top rear end of the protective seat; The extension frame is provided with a strip-shaped sliding hole, in which a plurality of threaded positioning cylinders are slidably installed, and a threaded sleeve is threadedly installed on the rear end of the threaded positioning cylinder. The threaded sleeve is movably inserted into the inner side of the groove provided on the rear end surface of the threaded positioning cylinder, and an extrusion groove is provided on the inner front end of the threaded sleeve; The inner diameter of the extrusion groove is gradually reduced from the front to the back, and an insertion rod is provided at each of the upper and lower ends of the inner side of the extrusion groove, and the two insertion rods are respectively fitted with the upper and lower ends of the inner side of the extrusion groove; The insertion rod movably passes through the groove and the inner side of the threaded positioning cylinder, and the end of the insertion rod away from the extrusion groove is connected to the clamping plate set in the threaded positioning cylinder. The clamping plate is connected to the inner ring of the threaded positioning cylinder through a spring, and the spring is movably sleeved on the insertion rod.

2. The high-stability power amplifier according to claim 1, characterized in that: Several groups of filter screens corresponding to the heat dissipation fans are installed in the protective seat, and each group of filter screens consists of two filter screens located at the upper and lower ends of the heat dissipation fan respectively.

3. The high-stability power amplifier according to claim 1, characterized in that: One end of the insertion rod close to the extrusion groove is a hemispherical structure protruding outward.

4. The high-stability power amplifier according to claim 1, wherein: The splint is an arc-shaped structure, and a rubber pad is pasted on the inner side of the splint.

Images