Dowel

专利摘要:
The invention relates to the field of engineering, in particular to fastening devices. The purpose of the invention is to increase the reliability of fastening. The dowel assembly is installed in the hole 15 and a torque is applied to the head 10 of the screw 2. The tip 3, moving along the screw threads, is drawn into the expanding sleeve 1. The petals of the sleeve cut into the walls of the hole. The implementation of the tip section with the curvilinear generatrix doubles the angle of the generatrix to the dowel axis. This allows a secure fit for any hole geometry, and also compensates for the increase in hole diameter caused by cracks. 4 3.p. f-ly, 3 ill. g / 5 SU) with: from 4 CO cm
公开号:SU1303043A3
申请号:SU853904999
申请日:1985-05-31
公开日:1987-04-07
发明作者:Фишер Артур；Онаш Юрген；Хааге Манфред
申请人:Др.Х.Ц.Артур Фишер (Фирма)；
IPC主号:

专利说明:

113
BACKGROUND OF THE INVENTION The invention relates to mechanical engineering, c. particular to mounting devices.
The purpose of the invention is to increase the reliability of fastening.
Fig. 1 shows a dowel mounted in the holes of the foundation and the part to be attached; in fig. 2 - then


however, with an expansion sleeve having a sawtooth groove, in a fixed position; in fig. 3 - the same, with a twist
gin ring in the ring expansion sleeve.
The dowel contains an expansion sleeve with longitudinal slots mounted on screw 2, a conical tip 3 with a thread 4, a plastic adapter 5 and a stop sleeve 6. The adapter 5 is made with ribs 7. The tip is made with a conical 8 and curvilinear 9 sections. The tangent to the curvilinear generatrix in the zone of the curvilinear tip portion of the largest diameter is an angle with the longitudinal axis of the dowel angle equal to twice the angle at the apex of the cone. The optimal angle at the tip of the tip cone is b.
The screw is made with a turnkey head 10, and the expansion sleeve is with a conical surface 11 corresponding to the conical section 8 of the tip, and with an annular saw-like groove 12 or an annular groove 13 in which a spring ring 14 is installed, with a conical outer surface facing large base to the tip.
The assembled dowel is installed in the hole 15 of the attachment part 16 and the foundation 17. When torque is applied to the screw head 10, the conical tip portion 8 with a cone angle of 6 ° is drawn into the expansion sleeve 1, and then the curvilinear portion 9, Petals formed by longitudinal slots , radially - but crash into the walls of the hole. For
preventing the unwrapping of the Q-groove made on the outer 1st sleeve serve as the longitudinal ribs 7 of the Adapter 5. The screw head 10 serves as a stop when tightening, supporting through the washer 18 to the part to be attached 16, Ring groove of the saw-tooth profile at relatively low pressures x allows deep penetration into the bore walls of the petals of the expandable sleeve.
the surface of the expanding sleeve, with an increase in the outer diameter of the expanding sleeve.
 5. Dowel according to claim 4, characterized in that the spring ring is made with a conical outer surface facing the large base to the tip.
Making the tip portion with a curved surface provides an increase in expansion of the expansion sleeve, and a reduction in the tip retraction path.
To increase the penetration of petals into the walls of a hole in a very hard building material, a hardened spring ring is installed in an annular groove, the edge of which acts as a cutting edge beyond the outer diameter of the expansion sleeve.
This dowel allows you to compensate for the increase in the diameter of the hole caused by trash, ins and ensures a secure fit.

权利要求:
Claims (5)
[1]
1. A dowel containing a screw with a turnkey head and a conical tip screwed onto its threaded part, as well as a compression sleeve, a plastic adapter and a stop sleeve, successively installed on the screw, in order to increase the fastening reliability of the surface of the tip with the side opposite to the screw head is made with a curvilinear generatrix concave to the axis of the dowel,
tangent to the curvilinear generatrix in the zone of the curvilinear tip section of the largest diameter makes an angle with the longitudinal axis of the dowel equal to twice the angle at the apex of the cone.
[2]
2. Dyubel pop.1, which is different from the fact that the angle at the tip of the tip cone is 6.
[3]
3. Non.l flare, characterized in that an annular saw-like groove with an angle of inclination in the direction of the screw head is made on the outer surface of the expansion sleeve.
40
45
[4]
4. Dowel POP.1, characterized in that it is provided with a spring ring placed in the ring Q of a groove made on the outer
the surface of the expanding sleeve, with an increase in the outer diameter of the expanding sleeve.
[5]
 5. Dowel according to claim 4, characterized in that the spring ring is made with a conical outer surface facing the large base to the tip.
Editor T. Gereshi
Compiled by S. Nikulin
Tehred L.Oleynik Proofreader M, Samborska
Order 1229/58 Circulation 760 Subscription
VNIIPI USSR State Committee
for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d. 4/5
Production and printing company, Uzhgorod, st. Project, 4

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HU193392B|1987-09-28|

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EP3073130A1|2015-03-27|2016-09-28|HILTI Aktiengesellschaft|Split anchor|

法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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DE3420375A|DE3420375C2|1984-06-01|1984-06-01|

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