Anti-disassembly structure of indoor unit

Abstract

The utility model relates to the field of building intercom extension sets, in particular to an anti-disassembly structure of an indoor unit, which comprises a board back hanger, an upper cover, a lower cover, a bottom box, a magnet block and a PCB (printed circuit board), a positive pole pogo pin spring thimble and a negative pole pogo pin spring thimble are welded on the PCB, the lower cover is butted with the bottom box by adopting a buckle structure, and the magnet block is arranged on the PCB. The bottom box is further provided with a plurality of heat dissipation holes, the positive electrode pogo pin spring ejector pins and the negative electrode pogo pin spring ejector pins make contact with the metal galvanized plate back hanging frame to conduct electricity to form a loop, the double functions of product installation and fixing and anti-disassembly early warning can be achieved, the space occupancy rate is small, application can be flexibly achieved according to the thickness of a product, universality is high, and assembly is convenient and attractive.

Description

Technical Field

[0001] The utility model relates to the field of building intercom extensions, in particular to an anti-dismantling structure of an indoor unit. Background Art

[0002] In the past, the anti-dismantling structure of the indoor unit used a mechanical button welded on the PCB board and then pressed with a button cap. During the design process, a large amount of space was occupied, and different specifications of mechanical buttons were required for indoor units of different thicknesses and sizes. The universality was relatively non-uniform, the installation position was easily restricted, the cost was high, and the appearance was not beautiful and simple. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides an anti-dismantling structure of an indoor unit.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-disassembly structure of an indoor unit, comprising a board back hanger, an upper cover, a lower cover, a bottom box, a magnet block and a PCB circuit board, a positive pogopin spring ejector pin and a negative pogopin spring ejector pin are welded on the PCB circuit board, the lower cover and the bottom box are docked with a snap-fit ​​structure, and a plurality of heat dissipation holes are also provided on the bottom box.

[0007] Furthermore, the utility model has the following improvements: the plate back hanger is a metal galvanized plate back hanger.

[0008] Furthermore, the improvement of the utility model is that the upper cover, the lower cover and the magnet block are all made of plastic.

[0009] Furthermore, the utility model has the following improvements: the magnet block adopts a neodymium iron boron magnet.

[0010] Furthermore, the present invention has the following improvements: the positive electrode pogopin spring ejector pin and the negative electrode pogopin spring ejector pin are both made of brass gold-plated material, and the thickness of the gold-plated layer on the surface of the positive electrode pogopin spring ejector pin and the negative electrode pogopin spring ejector pin is 0.2 μm.

[0011] Furthermore, the present invention is improved in that the sizes of the plurality of heat dissipation holes are the same.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides an anti-disassembly structure of an indoor unit, which has the following features:

[0014] Beneficial effects:

[0015] The anti-dismantling structure of the indoor unit forms a circuit through the contact and conduction of the positive pogopin spring pin, the negative pogopin spring pin and the metal galvanized plate back bracket, which can play the dual role of product installation and anti-dismantling warning. It has a small space occupancy rate and can be flexibly used according to the thickness of the product. It has strong versatility and is easy and beautiful to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the split structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model in the failure state of the anti-disassembly function;

[0019] Figure 4 This is a schematic diagram of the structure of the utility model in which the anti-disassembly function is in effect;

[0020] In the figure: 1. Upper cover; 2. Lower cover; 3. Magnet block; 4. Bottom box; 5. Positive pole pogopin spring ejector pin; 6. Negative pole pogopin spring ejector pin; 7. Heat dissipation hole; 8. Board back hanger; 9. PCB circuit board. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , an anti-disassembly structure of an indoor unit, comprising a board back hanger 8, an upper cover 1, a lower cover 2, a bottom box 4, a magnet block 3 and a PCB circuit board 9, on which a positive pole pogopin spring ejector 5 and a negative pole pogopin spring ejector 6 are welded, the lower cover 2 and the bottom box 4 are connected with each other by a snap-fit ​​structure, and the bottom box 4 is also provided with a plurality of heat dissipation holes 7;

[0023] The present application uses a pogopin spring ejector pin as an anti-disassembly structure design for the indoor unit. The anti-disassembly structure is mainly composed of a board back hanger 8, an upper cover 1, a lower cover 2, a bottom box 4, a magnet block 3 and a PCB circuit board 9. The two-link positive pogopin spring ejector pin 5 and the negative pogopin spring ejector pin 6 are welded on the PCB circuit board 9, wherein the positive pogopin spring ejector pin 5 is connected to the positive pole of the circuit, and the negative pogopin spring ejector pin 6 is connected to the negative pole of the circuit. After power is turned on, the magnet block 3 on the back of the lower cover 2 will suck the entire indoor extension onto the board back hanger 8 On the top, the two-link positive pogopin spring ejector pin 5 and the negative pogopin spring ejector pin 6 are in contact with the back bracket 8 to conduct electricity and form a loop. At this time, the anti-disassembly function takes effect. The spring ejector pin protrudes from the lower cover 2 and can be retracted by 1mm. When the indoor unit and the back bracket 8 are separated by more than 1mm, the positive and negative poles are disconnected to form a short circuit, the anti-disassembly function fails, and the indoor unit alarms. We also design the bottom box 4 into a detachable buckle structure to facilitate assembly and circuit testing. The bottom box 4 is made into 2 buckles on the top and 2 buckles on the left and right sides at the bottom. The many heat dissipation holes 7 on the bottom box 4 can facilitate the heat dissipation of the mainboard chip inside.

[0024] Furthermore, the plate back hanger 8 is a metal galvanized plate back hanger 8 .

[0025] Furthermore, the upper cover 1, the lower cover 2 and the magnet block 3 are all made of plastic.

[0026] Furthermore, the magnet block 3 is made of neodymium iron boron magnet.

[0027] Furthermore, the positive pogopin spring thimble 5 and the negative pogopin spring thimble 6 are both made of brass gold-plated material, and the thickness of the gold-plated layer on the surface of the positive pogopin spring thimble 5 and the negative pogopin spring thimble 6 is 0.2μm, with stable conductive performance, sensitive contact, long life, low resistance, large current, retractable elastic height, elasticity standard 80g±20%, meeting the rated current 2A, rated voltage: within 36V DC requirements.

[0028] Furthermore, the sizes of the plurality of heat dissipation holes 7 are the same.

[0029] In the description of this article, it should be noted that relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. An anti-disassembly structure of an indoor unit, characterized in that: The invention comprises a board back hanger (8), an upper cover (1), a lower cover (2), a bottom box (4), a magnet block (3) and a PCB circuit board (9); a positive electrode pogopin spring ejector pin (5) and a negative electrode pogopin spring ejector pin (6) are welded on the PCB circuit board (9); the lower cover (2) and the bottom box (4) are connected with each other by a snap-fit ​​structure; and a plurality of heat dissipation holes (7) are also provided on the bottom box (4).

2. The anti-disassembly structure of an indoor unit according to claim 1, characterized in that: The plate back hanger (8) is a metal galvanized plate back hanger (8).

3. The anti-disassembly structure of an indoor unit according to claim 2, characterized in that: The upper cover (1), the lower cover (2) and the magnet block (3) are all made of plastic.

4. The anti-disassembly structure of an indoor unit according to claim 3, characterized in that: The magnet block (3) is made of neodymium iron boron magnet.

5. The anti-disassembly structure of an indoor unit according to claim 4, characterized in that: The positive electrode pogopin spring thimble (5) and the negative electrode pogopin spring thimble (6) are both made of brass gold-plated material, and the thickness of the gold-plated electroplating layer on the surface of the positive electrode pogopin spring thimble (5) and the negative electrode pogopin spring thimble (6) is 0.2 μm.

6. The anti-disassembly structure of an indoor unit according to claim 5, characterized in that: The sizes of the plurality of heat dissipation holes (7) are the same.

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