Voltage signal attenuator

Abstract

The utility model discloses a voltage signal attenuator, which comprises an integrated metal shell and a reinforced radiating fin, the reinforced radiating fin is inserted and fixed at the outer side circumference position of the integrated metal shell, the integrated metal shell and the reinforced radiating fin are integrally formed in a casting mode, and a connecting support body is arranged in the integrated metal shell. The connecting support bodies are installed in the integrated metal shell, the metal film resistors are welded between the adjacent connecting support bodies, the connecting support body on the outermost side is connected with the inlet and outlet connecting line, the inlet and outlet connecting line penetrates through the integrated metal shell and can be connected with external voltage signal equipment, and the attenuation ratio is controlled by controlling the installation number of the internal metal film resistors. The reinforced radiating fins are inserted and fixed on the circumference of the outer side of the integrated metal shell, and the integrated metal shell and the reinforced radiating fins are integrally formed in a casting manner, so that the strength of the shell is increased, the radiating performance is improved, and heat generated by working of the metal film resistor can be dissipated in time.

Description

Technical Field

[0001] This utility model relates to the field of voltage signal attenuators, and in particular to a voltage signal attenuator. Background Technology

[0002] In the field of electronic signal processing, voltage signal attenuators are a common and important device. They are used to attenuate the input voltage signal by a certain ratio to meet the voltage signal requirements of subsequent circuits or equipment. Traditional voltage signal attenuators have many shortcomings, such as poor heat dissipation performance. During long-term operation, the heat generated by the internal resistor cannot be dissipated in time, which not only affects the performance and life of the resistor, but may also cause the entire attenuator to be unstable or even damaged.

[0003] To address the aforementioned problems, the inventors have designed a voltage signal attenuator with high heat dissipation. Utility Model Content

[0004] The main purpose of this invention is to address the problem of poor heat dissipation performance.

[0005] To solve the above problems, this utility model proposes a voltage signal attenuator, comprising:

[0006] One-piece metal casing;

[0007] The heat sink is reinforced and fixed to the outer circumference of the integrated metal shell. The integrated metal shell and the heat sink are integrally formed by casting.

[0008] The connecting support is installed inside the integrated metal shell, and a metal film resistor is welded between every two adjacent connecting supports.

[0009] The outermost connecting support is connected to the inlet and outlet connecting lines, which pass through the integrated metal shell and are exposed to the outside.

[0010] In one embodiment, the connecting support is made of hollow copper sheet or printed circuit board.

[0011] In one embodiment, the connecting support body has sixteen mounting holes, eight in the inner ring and eight in the outer ring.

[0012] In one embodiment, the rear end of the integrated metal shell is provided with a rear screw ring, and the integrated metal shell and the rear screw ring are integrally formed by casting. The rear screw ring has a rear sealing cap screwed inside.

[0013] In one embodiment, the front end of the integrated metal housing is provided with a front screw ring, and a front injection end cap is screwed into the inside of the front screw ring.

[0014] In one embodiment, the interior of the integral metal casing is filled with epoxy resin. Beneficial effects

[0015] 1. The voltage signal attenuator of this utility model has a connecting support installed in an integrated metal shell, metal film resistors welded between adjacent connecting supports, and the outermost connecting support is connected to the inlet and outlet connecting lines passing through the integrated metal shell, so that it can be connected to external voltage signal equipment. The attenuation ratio is controlled by controlling the number of internal metal film resistors installed.

[0016] 2. The voltage signal attenuator of this utility model has a reinforced heat sink inserted and fixed around the outer circumference of the integrated metal shell. The integrated metal shell and the reinforced heat sink are integrally formed by casting, which increases the strength of the shell and improves the heat dissipation performance, and can dissipate the heat generated by the metal film resistor in time.

[0017] 3. The connection support of the voltage signal attenuator of this utility model is made of hollow copper sheet or printed circuit board, with sixteen mounting holes (eight in the inner ring and eight in the outer ring) to facilitate the positioning and installation of the metal film resistor. It is fixed by welding, which makes the installation and positioning of the metal film resistor more uniform and effectively reduces the distributed capacitance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Fig. 1 This is a three-dimensional structural diagram of the voltage signal attenuator of this utility model;

[0020] Fig. 2 This is a schematic diagram of the internal structure of the voltage signal attenuator of this utility model;

[0021] Fig. 3 This is a cross-sectional structural diagram of the voltage signal attenuator of this utility model.

[0022] The annotations in the attached figures are explained as follows:

[0023] 1. Connecting support body; 2. Metal film resistor; 3. Integrated metal shell; 4. Rear screw ring; 5. Inlet and outlet connecting wires; 6. Epoxy resin; 7. Reinforced heat sink; 8. Front screw ring; 9. Front injection end cap; 10. Rear sealing cap. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] To achieve the above-mentioned utility model objectives, such as Figs. 1-3 As shown, this utility model provides a voltage signal attenuator, including an integrated metal housing 3 and a connecting support 1. The connecting support 1 is installed inside the integrated metal housing 3, and a metal film resistor 2 is welded between every two adjacent connecting support 1s. The outermost connecting support 1 is connected to an input / output connecting line 5, which passes through the integrated metal housing 3 and is exposed to the outside. In this embodiment, the input / output line 5 is connected to an external voltage signal device, and the voltage value can be attenuated by the internal metal film resistor 2. The attenuation ratio can be controlled by controlling the number of internal metal film resistors 2.

[0026] Preferably, its metal film resistor 2 is a metal electrodeless thin film resistor.

[0027] As another implementation, the reinforcing heat sink 7 is inserted and fixed at the outer circumference of the integrated metal shell 3 and inserted into the interior of the integrated metal shell 3. The integrated metal shell 3 and the reinforcing heat sink 7 are integrally formed by casting. By setting the reinforcing heat sink 7, the strength of the entire integrated metal shell 3 can be increased, and the heat dissipation performance of the entire attenuator can also be increased, so that the heat generated by the metal film resistor 2 inside the attenuator can be dissipated in time.

[0028] Optionally, the connecting support 1 is made of hollow copper sheet or printed circuit board, and the connecting support 1 has sixteen mounting holes, eight in the inner ring and eight in the outer ring. In this way, the multiple mounting holes facilitate the positioning and installation of the metal film resistor 2, and then the metal film resistor 2 and the connecting support 1 can be welded and fixed by welding.

[0029] Optionally, a rear screw ring 4 is provided at the rear end of the integrated metal housing 3. The integrated metal housing 3 and the rear screw ring 4 are integrally formed by casting. A rear sealing cap 10 is screwed into the interior of the rear screw ring 4. In this way, the connecting support body 1 with the metal film resistor 2 welded on can be placed inside the integrated metal housing 3 of the attenuator, and then the rear sealing cap 10 can be screwed on to achieve sealing.

[0030] Optionally, the front end of the integrated metal housing 3 is provided with a front screw ring 8, and a front injection sealing cap 9 is screwed inside the front screw ring 8. The interior of the integrated metal housing 3 is filled with epoxy resin 6. Thus, the epoxy resin 6 inside the integrated metal housing 3 can be injected through the front screw ring 8, and then the front injection sealing cap 9 is screwed onto the front screw ring 8 to achieve sealing.

[0031] It should also be noted that the front injection sealing cap 9 and the rear sealing cap 10 of the integrated metal shell 3 are screwed on at the front and back respectively, so that the interior of the integrated metal shell 3 is a sealed space, thereby forming a sealed metal shield shell.

[0032] As a further improvement, its front injection sealing cap 9, rear sealing cap 10 and integrated metal housing 3 can also be fixedly connected by welding.

[0033] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A voltage signal attenuator, characterized in that, include: One-piece metal casing (3); The heat sink (7) is reinforced and fixed to the outer circumference of the integrated metal shell (3). The integrated metal shell (3) and the heat sink (7) are integrally formed by casting. A connecting support (1) is installed inside an integral metal shell (3), and a metal film resistor (2) is welded between every two adjacent connecting supports (1). The inlet and outlet connecting lines (5) are connected to the outermost connecting support (1), and the inlet and outlet connecting lines (5) pass through the integrated metal shell (3) and are exposed to the outside.

2. A voltage signal attenuator as described in claim 1, characterized in that, The connecting support (1) is made of hollow copper sheet or printed circuit board.

3. A voltage signal attenuator as described in claim 1, characterized in that, The connecting support (1) has sixteen mounting holes, eight in the inner ring and eight in the outer ring.

4. A voltage signal attenuator as described in claim 1, characterized in that, The rear end of the integrated metal shell (3) is provided with a rear screw ring (4). The integrated metal shell (3) and the rear screw ring (4) are integrally formed by casting. The rear screw ring (4) has a rear sealing cap (10) screwed inside.

5. A voltage signal attenuator as described in claim 1, characterized in that, The front end of the integrated metal shell (3) is provided with a front screw ring (8), and a front injection end cap (9) is screwed inside the front screw ring (8).

6. A voltage signal attenuator as described in claim 1, characterized in that, The interior of the integrated metal shell (3) is filled with epoxy resin (6).

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