CN208935118U - A kind of novel expansion nail - Google Patents

Abstract

The utility model discloses a kind of novel expansion nails, the expandable nail includes outer tube, outer tube fills steel ball and core sleeve inside it, along the outer surface of the axially and radially direction mandrel of mandrel equal part several steel ball can be allowed along the gradual change groove of play above and below mandrel radial direction, rotating spanner after the platform of mandrel is blocked with spanner, steel ball is bumped into wall as the gradual change groove of mandrel slowly exceeds housing tube outer surface, nut is screwed at the screw thread of mandrel can be with fixed object, when removing expandable nail after unscrewed nut, unscrewed mandrel again, the expandable nail clip is secured, relative to common nails, its fixed effect is reinforced, facilitate installation and removal.

Description

A kind of novel expansion nail

Technical field

The utility model relates to a kind of novel expansion nails, belong to field of engineering building.

Background technique

Existing engineering construction mostly uses hollow brick, expands after hollow brick is encountered when holding expansion bolt bottom outlet successfully frequent occurrence Bolt cannot secured clamping phenomenon, there be also occasions when expansion bolt good and sound at one cannot be removed when removing adds stifled expansion bolt bottom Hole, expansion bolt is exactly at insulated wall at this time, therefore will form cold bridge impact heat preservation.

Summary of the invention

In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of novel expansion nail, and it is special to solve The needs of metope fixed object.

The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of novel expansion nail, including it is mandrel, outer Casing, steel ball, circlip and nut；The mandrel is round bar shape, and outer tube is what two semicircle endless tubes were formed by connecting by circlip Hollow pipe, along the outer surface of the axially and radially direction mandrel of mandrel equal part several steel ball can be allowed along mandrel radial direction side To the gradual change groove of upper and lower play, gradual change groove surfaces are equipped with anti-skidding sawtooth, and mandrel one end is equipped with screw thread, threaded after assembly Mandrel one end exceeds housing end surfaces, and the mandrel beyond part has symmetrically arranged plane, and outer tube is by steel ball and core sleeve Dress is inside it；It is equipped with the conical bore matched with gradual change groove on outer tube, is conical bore bigger diameter end at outer sleeve inner wall, Bigger diameter end diameter is greater than diameter of the steel ball, and miner diameter end diameter is less than diameter of the steel ball；Housing tube outer surface is equipped with several and inlays circlip Slot, outer tube one end is additionally provided with a gap；The wall thickness of outer tube is less than diameter of the steel ball.

In use, expandable nail is bumped into the bottom outlet that wall is held successfully, the end face gap of outer tube is resisted with a word bottle opener, is used Spanner blocks rotating spanner after the symmetrical plane at mandrel thread bar, and steel ball slowly exceeds outer tube with the gradual change groove of mandrel Outer surface is bumped into wall, by nut be screwed at the threaded rod of mandrel can with fixed object, remove expandable nail when unscrewed nut after, then Unscrewed mandrel can be pulled out.

The beneficial effect of the use of the new type is: a kind of novel expansion nail, is solved using the frictional force of multiple groups steel ball and wall The problem of hollow wall cannot efficiently use common setscrew fixed object, suitable for hollow wall, thin wall and wood The soft metope such as material, relative to common nails, its fixed effect is reinforced, and facilitates installation and removal.

Detailed description of the invention

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

Fig. 1 is the main view of the utility model.

Fig. 2 is the place Figure 1A-A sectional view.

Fig. 3 is the portion B enlarged drawing in Fig. 2.

Figure label:

1, outer tube, 2, circlip, 3, mandrel, 4, nut, 5, steel ball, 6, gradual change groove, 7, anti-skidding sawtooth, 8, conical bore, 9, gap.

Specific embodiment

As shown in Figures 1 to 3, a kind of novel expansion nail, including mandrel 3, outer tube 1, steel ball 5, circlip 2 and nut 4；It is described Mandrel 3 is round bar shape, and outer tube 1 is the hollow pipe that two semicircle endless tubes pass through that circlip 2 is formed by connecting, along mandrel 3 axial direction and On the outer surface of radial direction mandrel 3 equal part several steel ball 5 can be allowed recessed along the gradual change of play above and below 3 radial direction of mandrel Slot 6,6 surface of gradual change groove are equipped with anti-skidding sawtooth 7, and 3 one end of mandrel is equipped with screw thread, and threaded 3 one end of mandrel exceeds after assembly 1 end face of outer tube, the mandrel 3 beyond part have symmetrically arranged plane, and steel ball 5 and mandrel 3 are sleeved in it by outer tube 1 Portion；It is equipped with the conical bore 8 matched with gradual change groove 7 on outer tube 1, is 8 bigger diameter end of conical bore at 1 inner wall of outer tube, greatly Diameter end diameter is greater than 5 diameter of steel ball, and miner diameter end diameter is less than 5 diameter of steel ball；1 outer surface of outer tube is equipped with several and inlays circlip 2 slot, 1 one end of outer tube are additionally provided with a gap 9；The wall thickness of outer tube 1 is less than 5 diameter of steel ball.

In use, expandable nail is bumped into the bottom outlet that wall is held successfully, the end face gap 9 of outer tube 1 is resisted with a word bottle opener, Rotating spanner after blocking the symmetrical plane at 3 threaded rod of mandrel with spanner, steel ball 5 slowly exceed with the gradual change groove 6 of mandrel 3 1 outer surface of outer tube is bumped into wall, and nut 4 is screwed at the threaded rod of mandrel 3 can be with fixed object, unscrewed when removing expandable nail After nut 4, then unscrewed mandrel 3 can be pulled out.

Claims (2)

1. a kind of novel expansion nail, it is characterised in that: including mandrel (3), outer tube (1), steel ball (5), circlip (2) and nut (4)；The mandrel (3) is round bar shape, and outer tube (1) is the hollow pipe that two semicircle endless tubes pass through that circlip (2) are formed by connecting, edge On the outer surface of the axially and radially direction mandrel (3) of mandrel (3) equal part several steel ball (5) can be allowed along mandrel (3) diameter The gradual change groove (6) of play above and below to direction, mandrel (3) one end are equipped with screw thread, and threaded mandrel (3) one end exceeds after assembly Outer tube (1) end face, the mandrel (3) beyond part have symmetrically arranged plane, and outer tube (1) is by steel ball (5) and mandrel (3) Suit is inside it；It is equipped on outer tube (1) and gradual change groove (6) conical bore (8) for matching, at outer tube (1) inner wall For conical bore (8) bigger diameter end, bigger diameter end diameter is greater than steel ball (5) diameter, and miner diameter end diameter is less than steel ball (5) diameter；Outer tube (1) slot of circlip (2) is inlayed equipped with several in outer surface, and outer tube (1) one end is additionally provided with a gap (9)；The wall of outer tube (1) Thickness is less than steel ball (5) diameter.

2. a kind of novel expansion nail according to claim 1, it is characterised in that: described gradual change groove (6) surface is equipped with Anti-skidding sawtooth (7).