Filter with compact structure

Abstract

The utility model relates to a television antenna filter. The filter with the compact structure comprises a body, a circuit board and a terminal, the upper part of the body is provided with an opening, the lower part of the body is closed, the circuit board penetrates through the opening and then is fixed at the lower part of the terminal, the terminal is fixed on the body, and the upper part of the terminal is provided with a second sealing ring at a position matched with the body; the body is made of metal; the bottom of the circuit board is provided with a copper pin, the bottom of the body is provided with a via hole through which the copper pin passes, the middle part of the copper pin is provided with a sealing ring with a step, the copper pin and the sealing ring are in close fit, and a first sealing ring is arranged between the sealing ring and the body. The filter is sealed through the sealing ring, the first sealing ring and the second sealing ring, and the waterproof effect is good; the body is made of metal and is attractive and elegant and good in shielding effect.

Description

Technical Field

[0001] The utility model relates to a television antenna filter. Background Art

[0002] Most existing filters have plastic shells, are bulky and have poor effects. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides a filter with a compact structure and good effects.

[0004] The utility model discloses a compact filter comprising a body, a circuit board, and terminals. The body has an opening at the top and a closed bottom. The circuit board passes through the opening and is secured to the bottom of the terminals. The terminals are secured to the body, and a second sealing ring is provided on the top of the terminals, where it mates with the body. The body is made of metal. Copper pins are provided at the bottom of the circuit board, and holes are provided at the bottom of the body for the copper pins to pass through. A stepped sealing ring is provided in the middle of the copper pins, providing a tight fit between the copper pins and the sealing ring. A first sealing ring is provided between the second sealing ring and the body. The sealing ring, the first sealing ring, and the second sealing ring achieve a sealed filter, providing excellent waterproofing. The body is made of metal, is aesthetically pleasing, and provides excellent shielding.

[0005] Preferably, the body is made of stainless steel, aluminum or copper, which is low in cost and easy to process.

[0006] As a preference, the upper portion of the body is provided with an internal thread, and the lower portion of the terminal is provided with an external thread that matches the internal thread, so that the installation is convenient and the use is flexible.

[0007] Preferably, a positioning groove is provided at the bottom of the terminal for fixing the circuit board, which ensures accurate positioning and prevents damage to the circuit board.

[0008] As an advantage, the sealing ring is provided with a step, and the first sealing ring is sleeved on the step, so as to facilitate installation and avoid loss of accessories.

[0009] The beneficial effects of the utility model include: the filter is sealed by the sealing ring, the first sealing ring and the second sealing ring, and the waterproof effect is good; the main body is made of metal, which is beautiful and has a good shielding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of a compact three-dimensional filter structure.

[0011] Figure 2 A schematic diagram of the cross-sectional structure of a compact filter.

[0012] Figure 3 for Figure 2 Zoomed in view.

[0013] Figure 4 It is a schematic diagram of the three-dimensional structure of the terminal.

[0014] Markings in the figure: 1. Main body, 2. Terminal, 3. Circuit board, 4. Copper pin, 5. First sealing ring, 6. Second sealing ring, 7. Sealing ring, 21. Positioning groove, 22. External thread. DETAILED DESCRIPTION

[0015] The present invention will be described in further detail below with reference to the accompanying drawings, but this should not be construed as limiting the scope of the present invention to the above embodiments.

[0016] like Figure 1-4 The figure shows a compact filter comprising a body 1, a circuit board 3, and terminals 2. The body 1 has an opening at the top and a closed bottom. The circuit board 3 passes through the opening and is fixed to the bottom of the terminals 2. The terminals 2 are fixed to the body 1. A second sealing ring 6 is provided on the top of the terminals 2, where it mates with the body 1. The body 1 is made of a metal such as stainless steel, aluminum, or copper. The top of the body 1 has internal threads, and the bottom of the terminals 2 has external threads 22 that mate with the internal threads. The bottom of the terminals 2 has a positioning groove for securing the circuit board 3. The bottom of the circuit board 3 has a copper pin 4. The bottom of the body 1 has a through-hole for the copper pin 4 to pass through. A sealing ring 7 with a step is provided in the middle of the copper pin 4. The copper pin 4 and the sealing ring 7 are tightly fitted. A first sealing ring 5 is mounted on the step of the sealing ring 7, forming a seal with the bottom of the body 1. The sealing ring 7, the first sealing ring 5, and the second sealing ring 6 achieve a sealed filter, providing excellent waterproofing. The body 1 is made of metal, is aesthetically pleasing, and has excellent shielding effects.

Claims

1. A filter with a compact structure, comprising a body, a circuit board and a terminal. The upper portion of the body is provided with an opening and the lower portion is closed. The circuit board passes through the opening and is fixed to the lower portion of the terminal. The terminal is fixed to the body. The filter is characterized in that: A second sealing ring is provided on the upper part of the terminal at a position where it cooperates with the body; the body is made of metal; a copper pin is provided at the bottom of the circuit board, and a through hole for the copper pin to pass through is provided at the bottom of the body. A sealing ring with a step is provided in the middle of the copper pin, and the copper pin and the sealing ring are tightly fitted. A first sealing ring is provided between the second sealing ring and the body.

2. A compact filter according to claim 1, characterized in that: The body is made of stainless steel, aluminum or copper.

3. A compact filter according to claim 1, characterized in that: The upper part of the body is provided with an internal thread, and the lower part of the terminal is provided with an external thread matching the internal thread.

4. A compact filter according to claim 1, characterized in that: A positioning groove for fixing the circuit board is provided at the bottom of the terminal.

5. A compact filter according to claim 1, characterized in that: The sealing ring is provided with a step, and a first sealing ring is sleeved on the step.

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