CN203146524U

CN203146524U - Screw with insulated gasket

Info

Publication number: CN203146524U
Application number: CN 201320006548
Authority: CN
Inventors: 全桂梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-07
Filing date: 2013-01-07
Publication date: 2013-08-21
Anticipated expiration: 2023-01-07

Abstract

The utility model discloses a screw with an insulated gasket, and the screw is mainly used for fixing a PCB (printed circuit board). The screw comprises a screw body and an insulated gasket. The screw body comprises a screw head and a bolt with a self-tapping thread. The self-tapping bolt of the screw penetrates through an opening in the middle of the insulated gasket which is screwed and sleeved at the connecting position of the screw head and the bolt, so that the screw and the insulated gasket are locked together to a whole; the insulated gasket plays a role of increasing creep distance between the screw head and the PCB or the screw head and a component; and safety of products is improved.

Description

A kind of screw of tape insulation pad

Technical field

The utility model product can be widely used in fixedly pcb board of electronics, electrical apparatus industry, can increase the creep age distance between screw head and printed circuit or screw head and the components and parts, avoid screw head to touch the short circuit that printed circuit or electronic component cause, increase the security of products energy.

Background technique

Electronics, the pcb board of electrical products, spacing between its printed circuit generally is limited, especially the little electronics of some volumes, electrical products, or be subjected to the limitation of product inner space, general design very little of pcb board, the spacing of printed circuit is also just very little, cause the distance of the mounting hole of pcb board and printed circuit very approaching, for avoiding causing short circuit because of the screw head of set screw, common solution is to increase operational sequence in addition, namely when installing and fixing pcb board, insulation spacer of pad below screw head, and add the assembly technology of insulation spacer in the production line manual operation, screw and insulation spacer can not be made drive fit, otherwise the workman can't operate, this insulation spacer and screw are divided into two individual part, when pcb board is installed by the assembly technology of artificial suit insulation spacer, operating difficulties, labor intensive, manufacturing efficiency are very low.

Summary of the invention

Install and fix the problem of screw suit insulation spacer difficulty in the process for the pcb board that solves electronics, electrical products, it is a kind of simple in structure, with low cost that the utility model provides, the product that screw and insulation spacer are made of one, great convenience is provided for installing and fixing of pcb board, can significantly promote manufacturing efficiency, promote the security of products energy simultaneously.

Realize that technological scheme of the present invention is: a kind of screw of tape insulation pad comprises screw body and insulation spacer.

Described screw body is made up of the screw rod of screw head and band Thread Forming TF, screw head is fixedlyed connected with an end of screw rod, described insulation spacer is tightened the joint that is sleeved on screw head and screw rod, make screw and insulation spacer become an integral body, the rotatable self tapping of the screw rod of described screw passes the perforate in the middle of the insulation spacer, and described insulation spacer is insulating board or insulation film.

Perforate in the middle of the above-mentioned insulation spacer is circular hole, and described Circularhole diameter is less than the screw rod external diameter, with the screw rod formation self-tapping lock drive fit of described screw.

Perforate in the middle of the above-mentioned insulation spacer can also be irregularly-shaped hole, and irregularly-shaped hole is made up of around a circle a plurality of equally distributed sawtooth, and the inscribed circle diameter of sawtooth crown is less than the screw rod external diameter, with the screw rod formation self-tapping lock drive fit of described screw.

Perforate in the middle of the above-mentioned insulation spacer can also be the regular polygon hole, and the inscribed circle diameter in regular polygon hole is less than the screw rod external diameter, with the screw rod formation self-tapping lock drive fit of described screw.

In this scheme, described insulation spacer is designed to rounded washers, has circular hole or irregularly-shaped hole, regular polygon hole in the middle of the packing ring, and washer outer diameter is more than or equal to described screw head external diameter.

Description of drawings

Fig. 1 assembles schematic representation for the utility model embodiment.

Fig. 2 is the utility model embodiment one decomposing schematic representation.

Fig. 3 is the utility model embodiment one insulation spacer plan view.

Fig. 4 is the utility model embodiment two decomposing schematic representations.

Fig. 5 is the utility model embodiment two insulation spacer plan views.

Fig. 6 is the utility model embodiment three insulation spacer plan views.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

Embodiment one:

As shown in Figure 1 to Figure 3, the screw of the tape insulation pad of present embodiment, the screw rod (2) and the insulation spacer (3) that comprise screw head (1), band Thread Forming TF, be provided with diameter less than the circular hole of screw rod (2) external diameter in the middle of the insulation spacer (3), the screw rod of screw (2) rotation self tapping passes the circular hole in the middle of the insulation spacer (3), insulation spacer (3) is tightened the joint that is sleeved on screw head (1) and screw rod (2), make screw become the integral body that is tightened in insulation spacer (3).

Embodiment two:

As Fig. 1, Fig. 4 and shown in Figure 5, present embodiment principle and embodiment one are basic identical, difference is the irregularly-shaped hole of offering in the middle of the insulation spacer (3) that is, irregularly-shaped hole is made up of around a circle a plurality of equally distributed sawtooth (31), the inscribed circle diameter of sawtooth crown is less than the external diameter of screw rod (2), the screw rod of screw (2) rotation self tapping passes the irregularly-shaped hole in the middle of the insulation spacer (3), insulation spacer (3) is tightened the joint that is sleeved on screw head (1) and screw rod (2), make screw become the integral body that is tightened in insulation spacer (3).

Embodiment three:

As Fig. 1 and shown in Figure 6, present embodiment principle and embodiment one are basic identical, difference be offer in the middle of the insulation spacer (3) be the regular polygon hole, the inscribed circle diameter in regular polygon hole is less than the external diameter of screw rod (2), the screw rod of screw (2) rotation self tapping passes the regular polygon hole in the middle of the insulation spacer (3), insulation spacer (3) is tightened the joint that is sleeved on screw head (1) and screw rod (2), make screw become the integral body that is tightened in insulation spacer (3).

Claims

1. the screw of a tape insulation pad comprises screw body and insulation spacer;

Described screw body is made up of the screw rod of screw head and band Thread Forming TF, screw head is fixedlyed connected with an end of screw rod, described insulation spacer is tightened the joint that is sleeved on screw head and screw rod, make screw and insulation spacer become an integral body, it is characterized in that: the rotatable self tapping of the screw rod of described screw passes the perforate in the middle of the insulation spacer, and described insulation spacer is insulating board or insulation film.

2. the screw of tape insulation pad as claimed in claim 1 is characterized in that: have circular hole in the middle of the described insulation spacer, described Circularhole diameter is less than the screw rod external diameter, forms the self-tapping lock drive fit with the screw rod of described screw.

3. the screw of tape insulation pad as claimed in claim 2, it is characterized in that: have irregularly-shaped hole in the middle of the described insulation spacer, irregularly-shaped hole is made up of around a circle a plurality of equally distributed sawtooth, the inscribed circle diameter of sawtooth crown is less than the screw rod external diameter, with the screw rod formation self-tapping lock drive fit of described screw.

4. the screw of tape insulation pad as claimed in claim 3 is characterized in that: have the regular polygon hole in the middle of the described insulation spacer, the inscribed circle diameter in regular polygon hole is less than the screw rod external diameter, forms the self-tapping lock drive fit with the screw rod of described screw.

5. as the screw of each described tape insulation pad in the claim 1 to 4, it is characterized in that: described insulation spacer is designed to rounded washers, has circular hole or irregularly-shaped hole, regular polygon hole in the middle of the packing ring, and washer outer diameter is more than or equal to described screw head external diameter.