CN204770804U - Drill bit depth stop that nut was screwed - Google Patents

Abstract

The utility model provides a drill bit depth stop that nut was screwed comprises drill bit, tubular metal resonator upper end, tubular metal resonator lower extreme split, split external screw thread, screw the nut, has the split external screw thread that corresponds with screw the nut's internal thread on tubular metal resonator lower extreme split, and screw the nut's internal screw thread diameter diminishes gradually, adopted the utility model discloses a scheme is not having under the condition of instrument, and depth stop, convenient to use also can be screwed up basically to the armrest.

Description

The drill bit depth stop that a kind of nut screws

Technical field

The utility model relates to a kind of drill bit depth stop, especially uses a kind of metal catheter to lead to be contained on percussion drill, electric hand drill to realize drilling depth restriction with the drill bit depth stop that a kind of nut screws.

Background technology

At present, we are when using electric hand drill and percussion drill punching, owing to being unable to estimate, for position, hole, not that it is exactly dozen shallow for beating dark, dark be sometimes afraid of ceiling to drill, shallow and put to enter setscrew, use electric hand drill or percussion drill still to compare to be difficult to and hold drilling depth, restricted drilling depth on part bench drill, but this structure is comparatively complicated, that restriction drill bit is to down stroke, this is just bad realization on percussion drill or electric hand drill, the application number applied on May 13rd, 2015 is in person " a kind of drill bit depth stop with anchor ear " of 201520302786.2, although solve this problem very well, but in actual applications, need to use the instrument ability tighten the screws such as screwdriver, it is not too convenient to use.

Utility model content

Shortcoming not too is easily used in " a kind of drill bit depth stop with anchor ear " that the application number that on May 13rd, 2015 applies for is 201520302786.2 in order to overcome me, the utility model proposes drill bit depth stop that a kind of nut screws with head it off, its good effect is: have employed the drill bit depth stop that a kind of nut screws, even if when there is no screwdriver, adopt hand also can fastening nut substantially, easy to use.

The utility model solves the technical scheme that its technical problem adopts: the drill bit depth stop that a kind of nut of the present utility model screws, be made up of drill bit, metal tube upper end, metal tube lower end distinguish, distinguish external screw thread, tightening nut, metal tube lower end distinguish has the distinguish external screw thread corresponding with the internal thread of tightening nut, and the diameter of the internal thread of tightening nut diminishes gradually.

The technical solution adopted in the utility model will coordinate accompanying drawing to elaborate in a particular embodiment.

Accompanying drawing explanation

Here is brief description of drawings.

Fig. 1 is the drill bit depth stop structural representation that a kind of nut of the present utility model screws.

1. drill bits in figure, 2. metal tube upper end, 3. metal tube lower end distinguish, 4. distinguish external screw thread, 5. screwing screw.

Detailed description of the invention

In the embodiment in figure 1, we further illustrate the utility model for the drill bit depth stop implemented a kind of nut and screw:

Fig. 1 is the drill bit depth stop schematic diagram that a kind of nut of the present utility model screws, in order to seem more three-dimensional, comprise this line hidden of part in figure also to have drawn, in figure, drill bit 1 is exactly common percussion drill, the drill bit of electric hand drill, and metal tube is divided into lower end, upper end, its upper and lower side structure is different, metal tube upper end 2 is cylindrical shape, is exactly steel pipe or other tubing of one section of certain length, and in it, empty diameter is more bigger than the diameter (chisel edge) of drill bit 1, and having certain wall thickness, wall thickness several millimeters is advisable; Metal tube lower end distinguish 3 is just enough by being usually divided into pintongs, and every lobe adopts the steel of good springiness to make, and its Thickness Ratio metal tube upper end 2 is little, just has good elasticity; Distinguish external screw thread 4 attacks external screw thread outside metal tube lower end distinguish 3, screwing screw 5 attacked internal thread, make it corresponding with distinguish external screw thread 4, but the internal thread diameter of screwing screw 5 has been diminishing.

In use, by the top of metal pipe sleeve at drill bit 1, up-down adjustment position is to suitable, then rotate screwing screw 5, the internal thread diameter due to screwing screw 5 is that from coil to coil reduces, so can oppress distinguish external screw thread 4, it is made tightly to paste on drill bit 1, frictionally locking depth stop.

Claims (1)

1. the drill bit depth stop that screws of a nut, be made up of drill bit (1), metal tube upper end (2), metal tube lower end distinguish (3), distinguish external screw thread (4), tightening nut (5), it is characterized in that: on metal tube lower end distinguish (3), have the distinguish external screw thread (4) corresponding with the internal thread of tightening nut (5), the diameter of the internal thread of tightening nut (5) diminishes gradually.