CN206268221U

CN206268221U - A kind of screwed hole for preventing lock askew

Info

Publication number: CN206268221U
Application number: CN201621112505.8U
Authority: CN
Inventors: 李耀光
Original assignee: Shenzhen Hangsheng Electronic Co Ltd
Current assignee: Shenzhen Hangsheng Electronic Co Ltd
Priority date: 2016-10-11
Filing date: 2016-10-11
Publication date: 2017-06-20
Anticipated expiration: 2026-10-11

Abstract

The utility model provide it is a kind of prevent the askew screwed hole of lock, including be coaxially disposed and along precession direction first sector hole and the second sector hole that set of screw, first sector hole is guide through hole, and second sector hole is internal thread mounting hole.The beneficial effects of the utility model are：During mounting screw, guide through hole can be first passed through and guide positioning, then be threaded into, lock can be prevented askew, it is to avoid loose-parts come off.

Description

A kind of screwed hole for preventing lock askew

Technical field

The utility model is related to screwed hole, more particularly to a kind of screwed hole for preventing lock askew.

Background technology

Because automobile electronics Life cycle is in the operating mode of low-frequency vibration, zero between this working condition requirement product The quality that part mode connects for screw is fixed is very high.Existing defects are such as connected, such as connects crooked, connect not in place, part pine can be caused It is dynamic to come off, cause serious quality problems.

Take out to be constantly in when screw contacts internal thread to screw in electric screwdriver due to current screw and its connected mode and rock State, will twist askew when nail has angle with internal thread to be connected when being screwed into by screw, and screw thread can be caused to damage, and connection is not In place, cause releasing for union piece part, produce serious quality problems.

The content of the invention

In order to solve the problems of the prior art, the utility model provides a kind of screwed hole for preventing lock askew.

The utility model provide it is a kind of prevent the askew screwed hole of lock, including be coaxially disposed and the precession direction along screw sets The first sector hole and the second sector hole put, first sector hole are guide through hole, and second sector hole is internal thread mounting hole.

Used as further improvement of the utility model, the height of the guide through hole is H, the spiral shell of the internal thread mounting hole Away from being h, H >=3h.

As further improvement of the utility model, a diameter of D of the guide through hole, the internal thread mounting hole it is big Footpath is d, D ＞ d.

As further improvement of the utility model, d+0.3mm ＞ D ＞ d+0.2mm.

Used as further improvement of the utility model, the aperture of the guide through hole is provided with chamfering.

The beneficial effects of the utility model are：By such scheme, during mounting screw, guide through hole can be first passed through and drawn Positioning is led, then is threaded into, lock can be prevented askew, it is to avoid loose-parts come off.

Brief description of the drawings

Fig. 1 is a kind of scheme of installation of the screwed hole for preventing from locking askew of the utility model.

Fig. 2 is a kind of schematic diagram of the screwed hole for preventing from locking askew of the utility model.

Specific embodiment

Explanation and specific embodiment are further illustrated to the utility model below in conjunction with the accompanying drawings.

As shown in Figure 1 to Figure 2, it is a kind of to prevent the askew screwed hole of lock, including be coaxially disposed and the precession direction along screw sets The first sector hole and the second sector hole put, first sector hole are guide through hole 1, and second sector hole is internal thread mounting hole 2.

As shown in Figure 1 to Figure 2, the height of the guide through hole 1 is H, and the pitch of the internal thread mounting hole 2 is h, H ＞ 3h, it is ensured that the effect of guiding positioning.

As shown in Figure 1 to Figure 2, a diameter of D of the guide through hole 1, the big footpath of the internal thread mounting hole 2 is d, D >= D, it is ensured that the effect of guiding positioning.

As shown in Figure 1 to Figure 2, d+0.3mm ＞ D ＞ d+0.2mm, it is ensured that the effect of guiding positioning.

As shown in Figure 1 to Figure 2, the aperture of the guide through hole 1 is provided with chamfering, it is ensured that the effect of guiding positioning.

A kind of screwed hole for preventing lock askew that the utility model is provided, during mounting screw, can first pass through guide through hole is carried out Guiding positioning, it is ensured that screw is concentric with connection screw thread, it is ensured that the effect of connection, then is threaded into, can prevent lock askew, it is to avoid Loose-parts come off, and this structure machine tooth screw and self-tap hole are applicable.

Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all regarded To belong to protection domain of the present utility model.

Claims

It is 1. a kind of to prevent from locking askew screwed hole, it is characterised in that：Including be coaxially disposed and along screw precession direction set the One sector hole and the second sector hole, first sector hole are guide through hole, and second sector hole is internal thread mounting hole.
It is 2. according to claim 1 to prevent from locking askew screwed hole, it is characterised in that：The height of the guide through hole is H, institute The pitch for stating internal thread mounting hole is h, H >=3h.
It is 3. according to claim 1 to prevent from locking askew screwed hole, it is characterised in that：A diameter of D of the guide through hole, institute The big footpath for stating internal thread mounting hole is d, D ＞ d.
It is 4. according to claim 3 to prevent from locking askew screwed hole, it is characterised in that：D+0.3mm ＞ D ＞ d+0.2mm.
It is 5. according to claim 1 to prevent from locking askew screwed hole, it is characterised in that：The aperture of the guide through hole is provided with down Angle.