CN215872356U

CN215872356U - A PCB board fixed knot constructs for SMD charactron

Info

Publication number: CN215872356U
Application number: CN202122045418.2U
Authority: CN
Inventors: 吴瀚馨
Original assignee: Wuxi Ark Technology Electronic Co ltd
Current assignee: Wuxi Ark Technology Electronic Co ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-02-18
Anticipated expiration: 2031-08-27

Abstract

The utility model discloses a PCB fixing structure for a chip type nixie tube, which comprises a plastic shell, a PCB and a display surface film, wherein a PCB groove for placing the PCB is formed in the top surface of the plastic shell, a plurality of protruding blocks are arranged in the area, below the PCB groove, on the bottom surface of the plastic shell, the PCB is fixed on the plastic shell through countersunk self-tapping screws, each countersunk self-tapping screw comprises a countersunk head part and a screw part, the PCB is provided with a countersunk head groove matched with the countersunk head part, and a screw groove matched with the screw part is formed between the countersunk head groove and the protruding blocks. The utility model adopts the fixing mode of the countersunk self-tapping screw to replace the existing hot riveting mode, greatly improves the detachability of the plastic shell and the PCB on the basis of ensuring the fixing effect, and is convenient for subsequent maintenance, thereby prolonging the service life of the plastic shell and the PCB.

Description

A PCB board fixed knot constructs for SMD charactron

Technical Field

The utility model belongs to the technical field of nixie tubes, and particularly relates to a PCB fixing structure for a surface mount type nixie tube.

Background

As shown in fig. 1, the conventional surface mount type nixie tube includes a plastic shell 1, a PCB 2 and a display surface film 5, the connection fixing mode of the plastic shell 1 and the PCB 2 is a hot riveting mode, the plastic shell 1 passes through the PCB 2 through a plurality of hot riveting columns 3, then the hot riveting columns 3 are hot riveted by installing corresponding special jigs through a hot riveting machine, the fixed connection of the plastic shell 1 and the PCB 2 is realized, and the display surface film 5 is attached to the top surface of the plastic shell 1.

In order to meet the market demand, the surface mount type nixie tube mostly needs to have a touch function, namely, the switch of the lamp wick on the PCB 2 can be controlled by touching the designated area on the display surface film 5, and the existing mode is that a spring key is arranged between the PCB 2 and the display surface film 5, and an instruction is transmitted through the spring key.

However, the above connection structure and control method have many problems, which are as follows:

1. the hot riveting mode needs a special jig, has high operation technology content and high requirement on operators, and is not only troublesome and laborious, but also cannot ensure the hot riveting effect.

2. The plastic shell 1 and the PCB 2 after hot riveting are difficult to easily realize disassembly and separation, and are not beneficial to later maintenance and repair.

3. The structural stability of the spring key in the digital tube structure cannot achieve a good effect, and dislocation and deformation are easy to occur, so that the sensitivity of the touch function is reduced or the touch function is directly failed.

Disclosure of Invention

The purpose of the utility model is as follows: in order to overcome the defects in the prior art, the PCB fixing structure for the surface mount type nixie tube is provided, and has the advantages of convenience in disassembly and assembly, high touch sensitivity, good touch function quality and the like.

The technical scheme is as follows: in order to achieve the purpose, the utility model provides a PCB fixing structure for a surface mount type nixie tube, which comprises a plastic shell, a PCB and a display surface film, wherein a PCB groove for placing the PCB is formed in the top surface of the plastic shell, a plurality of protruding blocks are arranged in the bottom surface of the plastic shell and positioned below the PCB groove, the PCB is fixed on the plastic shell through countersunk self-tapping screws, each countersunk self-tapping screw comprises a countersunk head part and a screw part, the PCB is provided with a countersunk head groove matched with the countersunk head part, and a screw groove matched with the screw part is formed between the countersunk head groove and the protruding blocks.

Further, the countersunk head part is of a horn-shaped structure.

Further, the PCB is provided with a lead, and the lead is led out from the bottom surface of the plastic shell.

Furthermore, the groove height of the PCB groove is equal to the thickness of the PCB, so that the PCB can be kept horizontal with the top surface of the plastic shell when being fixed in the PCB groove, and the horizontal surface mounting of the display mask is convenient to realize.

Furthermore, the top end of the countersunk head part is provided with a screwing notch, so that the countersunk self-tapping screw can be screwed conveniently.

Has the advantages that: compared with the prior art, the utility model has the following advantages:

1. the fixing mode of the countersunk self-tapping screw replaces the existing hot riveting mode, the detachability of the plastic shell and the PCB is greatly improved on the basis of ensuring the fixing effect, and the subsequent maintenance is convenient for the maintenance of the plastic shell and the PCB, so that the service life of the plastic shell and the PCB is prolonged.

2. The fixing mode of the countersunk self-tapping screw replaces the existing hot riveting mode, the operation difficulty of connection is reduced, the connection efficiency is improved, and the stable and good connection effect is ensured.

3. With PCB board and the horizontal design of mould shell top surface, the mode that adopts direct touching PCB board on the display surface membrane realizes the touch-control function, has not only promoted the sensitivity of touch-control function, has guaranteed the stability of touch-control function moreover, and the continuous result of use of touch-control function obtains effective guarantee.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

fig. 2 is a schematic structural diagram of the present invention.

Detailed Description

The utility model is further elucidated with reference to the drawings and the embodiments.

As shown in fig. 2, the utility model provides a PCB fixing structure for a chip-type nixie tube, which comprises a plastic casing 1, a PCB 2 and a display surface film 4, wherein a PCB groove 5 for placing the PCB 2 is formed in the top surface of the plastic casing 1, the height of the PCB groove 5 is equal to the thickness of the PCB 2, a plurality of protruding blocks 6 are arranged on the bottom surface of the plastic casing 1 and below the PCB groove 5, the PCB 2 is fixed on the plastic casing 1 through countersunk self-tapping screws 7, each countersunk self-tapping screw 7 comprises a countersunk portion 71 and a screw portion 72, the countersunk portion 71 is of a horn-shaped structure, a screwing groove opening 8 is formed in the top end of the countersunk portion 71, a countersunk groove 21 matched with the countersunk portion 71 is formed in the PCB 2, a screw groove 61 matched with the screw portion 72 is formed between the countersunk groove 21 and the protruding block 6, the PCB 2 is provided with a lead 3, and the lead 3 is led out from the bottom surface of the plastic casing 1.

In this embodiment, the installation process of the above structure is as follows: placing the PCB board 2 in the countersunk head groove 21, wherein the countersunk head parts 71 are respectively butted with respective screw parts 72 at the moment, then inserting and matching the countersunk self-tapping screws 7 into the countersunk head groove 21 and the screw groove 61, so that the countersunk head parts 71 and the screw parts 72 are respectively matched in the countersunk head groove 21 and the screw groove 61, then screwing the countersunk self-tapping screws 7 through screwing the notch 8 by using a tool, and finally attaching the display surface film 4 on the top surface of the plastic shell 1.

After the structure is installed, a user only needs to press the designated area on the display surface film 4 above the PCB 2, so that the PCB 2 can be directly touched, and the touch function is realized.

Claims

1. The utility model provides a PCB board fixed knot constructs for SMD charactron, is including moulding shell, PCB board and demonstration facial mask, its characterized in that, offer the PCB groove that is used for placing the PCB board on the top surface of moulding the shell, the below region that lies in the PCB groove on the bottom surface of moulding the shell is provided with a plurality of outstanding pieces, the PCB board is fixed on moulding the shell through countersunk head self tapping screw, countersunk head self tapping screw includes countersunk head portion and screw portion, set up the countersunk head groove that matches with countersunk head portion on the PCB board, set up the screw groove that matches with screw portion between countersunk head groove and the outstanding piece.

2. The PCB fixing structure for a SMD nixie tube according to claim 1, wherein said countersunk head portion is of a horn-shaped structure.

3. The PCB fixing structure for the SMD nixie tube according to claim 1, wherein: the PCB is provided with a lead, and the lead is led out from the bottom surface of the plastic shell.

4. The PCB fixing structure for the SMD nixie tube according to claim 1, wherein: the height of the PCB groove is equal to the thickness of the PCB.

5. The PCB fixing structure for the SMD nixie tube according to claim 1, wherein: the top end of the countersunk head part is provided with a screwing notch.