Threaded bolt, and hinge assembly comprising such a threaded bolt

Abstract

A threaded bolt for a hinge arrangement includes a cylindrical main body. On an outer circumferential surface thereof the cylindrical main body has a first frustoconical projection and a second frustoconical projection, which adjoins the first frustoconical projection. The diameter of a side of the first frustoconical projection that faces toward the second frustoconical projection is smaller than the diameter of a side of the second frustoconical projection that faces toward the first frustoconical projection. The first frustoconical projection comprises at least one tooth on its outer circumferential surface, which tooth protrudes radially beyond an imaginary continuation of the second frustoconical projection.

Claims

1. A threaded bolt for a hinge arrangement, comprising: a cylindrical main body, wherein on an outer circumferential surface thereof the cylindrical main body has a first frustoconical projection and a second frustoconical projection, which adjoins the first frustoconical projection, the diameter of a side of the first frustoconical projection that faces toward the second frustoconical projection is smaller than the diameter of a side of the second frustoconical projection that faces toward the first frustoconical projection, and the first frustoconical projection comprises at least one tooth on its outer circumferential surface, which at least one tooth protrudes radially beyond a continuation of the second frustoconical projection.

2. The threaded bolt according to claim 1, wherein the cylindrical main body comprises a blind hole, in which a screw is screweable.

3. The threaded bolt according to claim 2, wherein the at least one tooth is two teeth or three teeth.

4. A hinge arrangement, comprising: a first hinge part with a through-bore and a frustoconical hinge eyelet, further comprising a threaded bolt according to claim 3, wherein the at least one tooth is pressed in a wall defining the hinge eyelet of the first hinge part such that the second frustoconical projection rests against the wall and a cavity is formed between the first frustoconical projection and the wall.

5. The hinge arrangement according to claim 4, further comprising a screw, which is screwed to the threaded bolt in the through-bore.

6. The hinge arrangement according to claim 5, wherein the cavity is in the form of a frustoconical ring.

7. The hinge arrangement according to claim 6, wherein an outer circumferential surface of the second frustoconical projection and the wall defining the hinge eyelet are devoid of unevennesses.

8. The hinge arrangement according to claim 7, further comprising a second hinge part that is rotatably fixed to the threaded bolt.

9. The hinge arrangement according to claim 8, wherein the first hinge part is fixed to a body of a motor vehicle or to a door of the motor vehicle.

10. The hinge arrangement according to claim 8, wherein the second hinge part is fixed to a body of a motor vehicle.

11. The hinge arrangement according to claim 8, wherein the first hinge part is fixed to a door of a motor vehicle.

12. The hinge arrangement according to claim 1, wherein the second hinge part is fixed to a door of a motor vehicle.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a perspective view of a hinge arrangement according to the disclosure;

(2) FIG. 2 shows a perspective view of a threaded bolt, a first hinge part and a screw of the hinge arrangement according to the disclosure;

(3) FIG. 3 shows a front view of the threaded bolt of the hinge arrangement according to the disclosure; and

(4) FIG. 4 shows a sectional view through the threaded bolt, the first hinge part and the screw of the hinge arrangement according to the disclosure along line III-III in FIG. 2.

DETAILED DESCRIPTION OF THE DRAWINGS

(5) FIG. 1 shows a hinge arrangement 2 for a motor vehicle according to the disclosure. The hinge arrangement 2 serves for the pivotable attachment of a motor vehicle door (not illustrated) to a body (not illustrated) of the motor vehicle.

(6) The hinge arrangement 2 comprises a first hinge part 18, a second hinge part 36, a threaded bolt 4, a screw 16, a bushing (not illustrated) and a fixing element 38. The first hinge part 18 is pivotably connected to the second hinge part 36 by way of the threaded bolt 4, the screw 16 and the bushing, which is pushed on a cylindrical main body 6 of the threaded bolt 4. The fixing element 38 secures the second hinge part 36 to the threaded bolt 4. The second hinge part 36 is fixed to the motor vehicle door.

(7) Two screws (not illustrated) are used to fix the first hinge part 18 to the body of the motor vehicle. To this end, the first hinge part 18 comprises an attachment plate 28. The attachment plate 28 has two cutouts 30 in which the screws are arranged in the mounted state of the first hinge part 18 on the body.

(8) The first hinge part 18 comprises a mounting cylinder 32 with a through-bore 20. A hinge eyelet 22 adjoins the through-bore 20 at one end. The hinge eyelet 22 is laterally, that is to say radially, delimited by a wall 24 and is downwardly and upwardly, i.e. axially, open. The hinge eyelet 22 has a round cross-sectional area. The wall 24 laterally delimiting the hinge eyelet 22 extends obliquely. The diameter of the hinge eyelet 22 thus tapers from that end of the mounting cylinder 32 at which the hinge eyelet 22 is arranged, in the direction of the other end of the mounting cylinder 32, with the result that a frustoconical shape is formed.

(9) As can be seen in particular from the isolated illustration of the threaded bolt 4 in FIG. 3 and the sectional view, illustrated in FIG. 4, through the hinge arrangement 2 illustrated in FIG. 2 along line III-III in FIG. 2, on the outer circumferential surface the cylindrical main body 6 of the threaded bolt 4 comprises a first frustoconical projection 8 and a second frustoconical projection 10. The inclination of the second frustoconical projection 10 is the same as the inclination of the wall 24. The second frustoconical projection 10 thus rests areally against the wall 24 in the mounted state.

(10) The first frustoconical projection 8 and the second frustoconical projection 10 adjoin one another. The diameter of that side of the first frustoconical projection 8 that faces toward the second frustoconical projection is smaller than the diameter of that side of the second frustoconical projection 10 that faces toward the first frustoconical projection 8. The lateral surface of the first frustoconical projection 8 is thus radially recessed relative to the lateral surface of the second frustoconical projection 10. A connecting portion 34 connects the lateral surface of the first frustoconical projection 8 to the lateral surface of the second frustoconical projection 10. The first frustoconical projection 8, the second frustoconical projection 10 and the connecting portion 34 thus form a stepped shape.

(11) On its outer circumferential surface, the first frustoconical projection 8 comprises three teeth 12. The teeth 12 are arranged at regular intervals in relation to one another. Imaginary connecting lines of the teeth 12 thus form an equilateral triangle. The teeth 12 taper radially outward. Therefore, the teeth 12 can dig into the wall 24 defining the hinge eyelet 22.

(12) It is likewise conceivable for the frustoconical projection 8 to comprise more or fewer teeth 12.

(13) The teeth 12 each extend radially far enough that they protrude beyond an imaginary continuation of the lateral surface of the second frustoconical projection 10 in the axial direction. They can therefore cut into the wall 24 when the second frustoconical projection 10 rests against the wall 24 defining the hinge eyelet 22. As a result, the threaded bolt 4 is secured against rotation about an axis of rotation extending along an axial direction of the threaded bolt relative to the first hinge part 18. This makes it possible to screw a screw 16 into a blind hole 14 in the cylindrical main body 6 or unscrew the screw from the blind hole without the threaded bolt 4 rotating with the screw 16, with the result that the threaded bolt 4 and the screw 16 can be secured to the first hinge part 18.

(14) The screw 16 is introduced in the through-bore 20 from a side opposite the hinge eyelet 22. The screw 16 is thus introduced in the through-bore 20 from the other side in relation to the threaded bolt 4 (see FIG. 2).

(15) The teeth 12 cutting into the wall 24 causes material of the first hinge part 18 to be thrown up. Owing to the radial offset of the first frustoconical projection 8 relative to the second frustoconical projection 10, a cavity 26 in the form of a frustoconical ring is formed between the first frustoconical projection 8 and the wall 24 defining the hinge eyelet 22. The cavity 26 is thus radially delimited by the first frustoconical projection 8 and the wall 24. The thrown-up material can remain in the cavity 26 without adversely affecting the connection between the threaded bolt 4 and the first hinge part 18. It is therefore possible for the threaded bolt 4 to be dismounted from the first hinge part 18 and then remounted. The hinge arrangement 2 according to the disclosure thus has a long service life and repeated use is possible.

(16) The second frustoconical projection 10 has a smooth outer circumferential surface. The wall 24 defining the hinge eyelet 22 likewise has a smooth form, i.e. a form free of teeth and unevennesses. Consequently, the outer circumferential surface of the second frustoconical projection 10 rests against the wall 24 annularly around the periphery and thus fluid-impermeably in the mounted state. It is therefore not possible for any fluid, such as salt water, to enter the cavity, this further prolonging the service life of the hinge arrangement 2 according to the disclosure. Furthermore, it is therefore not possible for any paint applied during the manufacture of the motor vehicle to enter the cavity. This facilitates the manufacture of the motor vehicle.

LIST OF REFERENCE SIGNS

(17) 2 Hinge arrangement 4 Threaded bolt 6 Cylindrical main body 8 First frustoconical projection 10 Second frustoconical projection 12 Tooth 14 Blind hole 16 Screw 18 First hinge part 20 Through-bore 22 Hinge eyelet 24 Wall 26 Cavity 28 Attachment plate 30 Cutout 32 Mounting cylinder 34 Connecting portion 36 Second hinge part 38 Fixing element