Connecting bolts and associated connection protection

A connecting bolt has a bolt shank and a bolt head which has a radially outwardly projecting bolt projection. The bolt head has a latching projection between the bolt shank and the bolt projection on the side opposite the bolt projection.

DESCRIPTION

Field of the Invention

The invention relates to a connecting bolt for connecting two components, in particular two furniture boards made of particle-like, MDF-like or wood-like materials, having a bolt shaft and having a bolt head which has a radially outwardly protruding bolt projection. The invention further relates to an associated connecting fitting having the connecting bolt and a socket.

Background of the Invention

DE 20 2018 106 278 U1 describes a connecting bolt which is anchored with the bolt shaft thereof in the first portion. The bolt head is then pivoted with the blade-like projection thereof into a hole of the second portion, whereby the projection penetrates into the hole wall of the second portion and the connecting bolt is anchored in the hole.

SUMMARY OF THE INVENTION

An object of the present invention is to develop a connecting bolt of the type mentioned in the introduction in such a manner that the connection effect is improved and to provide an associated connecting fitting.

The object is achieved according to the invention, on the one hand, by a connecting bolt in which the bolt head has a locking projection between the bolt shaft and bolt projection at the side opposite the bolt projection and also by a connecting fitting having such a connecting bolt and having a socket which has a socket opening and inside the socket both a socket transverse face which is directed in the direction away from the socket opening and a locking recess which is arranged between the socket opening and socket transverse face at the side opposite the socket transverse face, wherein in the assembled state of the connecting fitting the bolt head is introduced into the socket opening and both the bolt projection engages behind the socket transverse face in the introduction direction of the connecting bolt and the locking projection is engaged in the locking recess.

Other advantages of the invention will be appreciated from the description, the claims and the drawings. The features mentioned above and those set out in greater detail below can also be used individually or together in any combinations. The embodiments shown and described are not intended to be understood to be a definitive listing, but instead are of an exemplary nature to describe the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The connecting fitting1shown inFIG. 1serves to connect two components, in particular two furniture panels made of particle boards, MDF, wood or the like, and comprises a connecting bolt10made of metal and a plastics material socket20.

The connecting bolt10has a cylindrical bolt shaft11and at the end side a bolt head12having a radially outwardly protruding, for example, claw-like or blade-like, bolt projection13. As shown inFIG. 2, the bolt head12has between the bolt shaft11and bolt projection13at the side opposite the bolt projection13a locking projection14which is preferably constructed in a convex, in particular dome-like or hemi-spherical manner. The rear side of the bolt projection13facing the bolt shaft11is constructed as an inclined face15and the bolt side16located opposite the bolt projection13is chamfered. At the side of the bolt projection13, the bolt shaft11merges via a radially outwardly directed step17into the bolt head12. At the other end thereof, the connecting bolt10also has a bolt head18which is hemi-spherical in this instance.

The socket20has a front-side socket opening21and inside the socket20both a socket transverse face22, which is directed in the direction away from the socket opening21and which is inclined in this instance, and a locking recess23which is arranged between the socket opening21and socket transverse face22at the side opposite the socket transverse face22. The locking recess23may be formed by a locking indentation or, as shown in the embodiment, by a transverse opening. The socket transverse face22forms the wall of a lateral socket opening24which is open at the cover side and which, as shown, may be configured as a slot which is open at the rear side. At the outer side thereof, the socket20is provided with a plurality of barb-like ribs25.

InFIGS. 4a-4d, the assembly of the connecting fitting1on a furniture panel2is shown.

Firstly, the socket20is pressed, with the socket opening24upward, into a hole3in the furniture panel2(FIGS. 4a, 4b), wherein the ribs25engage in the hole wall. Preferably, the socket20is additionally glued in the hole3.

The bolt head12of the connecting bolt10which is tilted at an angle α (in this instance, purely by way of example, approximately 45°) is then introduced by the operator into the socket opening21without the use of tools (FIG. 4c) until the chamfered bolt side16rests on the opening edge26of the socket opening21.

Finally, the connecting bolt10is pressed or tilted through the angle α in a downward direction into the end position thereof which is at right-angles with respect to the furniture panel2(FIG. 4d), whereby, on the one hand, the bolt projection13engages with the inclined face15thereof behind the inclined transverse face22and, on the other hand, the chamfered bolt side16slides on the opening edge26further into the socket20. As a result of the tilting movement, the bolt head12is pulled further into the socket20until the locking projection14is engaged in the locking recess23(FIGS. 5a, 5b). The bolt shaft11then extends coaxially relative to the socket axis and consequently at right-angles with respect to the furniture panel2, and the step17of the connecting bolt10terminates flush with the socket end face. Via the other bolt head18, a second furniture panel4can be secured to the first furniture panel2. The bolt head12at the transition thereof to the bolt shaft11and the socket opening21have complementary cross sections so that the connecting bolt10is received in a gap-free manner in the socket opening21.

FIG. 5ashows the mounted connecting fitting1having a socket20which is so narrow that the bolt projection13projects from the socket opening24in an outward direction and penetrates with the claw-like or blade-like end into the wall of the hole3. This increases the extraction values of the connecting bolt10.FIG. 5ashows the mounted connecting fitting1with a socket20which is so wide that the bolt projection13does not project outwardly out of the socket opening24.