Roller conveyor

Patent metadata

Field	Value
Publication number	US-12404111-B2
Application number	US-202118267462-A
Country	US
Kind code	B2
Filing date	Dec 10, 2021
Priority date	Dec 15, 2020
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

A fastening screw (2) comprisinga threaded shank (21) having an external thread,a screw head (23),characterized inthat a truncated circular cone section (22) is provided axially between the screw head (23)and the threaded shank (21).

First claim

The invention claimed is:

1. Roller conveyor ( 1 ) comprising
a plurality of conveyor rollers ( 3 ) supported on a supporting frame ( 4 ),
wherein at least one conveyor roller ( 3 ) is fixed to the supporting frame ( 4 ) by means of a fastening screw ( 2 ),
said fastening screw ( 2 ) comprising
a threaded shaft ( 21 ) having an external thread,
a screw head ( 23 ),
wherein a truncated circular cone section ( 22 ) is provided axially between the screw head ( 23 ) and the threaded shaft ( 21 ),
wherein the support frame ( 4 ) is clamped in sectionally between the screw head ( 23 ) and a fastening section ( 33 ) of the conveyor roller ( 3 ),
characterized in
that the supporting frame ( 4 ) has a polygonal bore ( 42 ), the truncated circular cone section ( 22 ) being arranged in the polygonal bore ( 42 ).

2. Roller conveyor ( 1 ) according to claim 1 , characterized
in that the truncated circular cone section ( 22 ) has a base area (G) with a base diameter (g) and a cover area (D) with a cover diameter (d), the cover diameter (d) being smaller than the base diameter (g).

3. Roller conveyor ( 1 ) according to claim 1 , characterized in,
that the base area (G) faces the screw head ( 23 );
and that the cover area (D) faces the threaded shaft ( 21 ).

4. Roller conveyor ( 1 ) according to claim 1 , characterized in
that the truncated circular cone section ( 22 ) and the screw head ( 23 ) directly adjoin each other,
in particular that the base section (G) directly adjoins a radial clamping surface(S) of the screw head ( 23 ).

5. Roller conveyor ( 1 ) according to claim 1 , characterized in
that the truncated circular cone section ( 22 ) is arranged in the polygonal bore ( 42 ) in such a way that the fastening screw is thereby held centered with respect to the polygonal bore.

6. Roller conveyor according to claim 1 , characterized in
that the polygonal bore ( 42 ) is a hexagonal bore.

7. Roller conveyor ( 1 ) according to claim 1 , characterized in
that an incircle diameter (i) of the polygonal bore ( 42 ) is smaller than a base circle diameter (g) of the truncated circular cone section ( 22 ),
in particular that the incircle diameter (i) is larger than a cover diameter (d) of the truncated circular cone section ( 22 ).

8. Roller conveyor according to claim 1 , characterized in
that the conveyor roller has at one end a roller head ( 32 ) to which the fastening screw ( 2 ) is attached, a poly-V belt ( 11 ) being attached to the roller head.

9. Method of manufacturing a roller conveyor ( 1 ) according to claim 1 , comprising the following method steps:
providing the support frame ( 4 ) with a polygonal bore ( 42 ),
providing a conveyor roller ( 3 ),
the method comprises a selection step, wherein a selection takes place from the following two options:
(option 1) inserting the fastening screw ( 2 ) into the polygonal bore ( 42 ), wherein for fastening the, in particular passive, roller to the support frame, the circular truncated cone portion ( 22 ) is arranged in the polygonal bore ( 42 ),
and
(Option 2) inserting a fastening axis ( 34 ) of the roller, in particular a motor roller, into the polygonal bore ( 42 ), the fastening axis ( 34 ) having an outer circumference which forms a rotationally fixed connection with the polygonal bore ( 42 ) by positive locking.

10. Roller conveyor ( 1 ) comprising
a plurality of conveyor rollers ( 3 ) supported on a supporting frame ( 4 ),
wherein at least one conveyor roller ( 3 ) is fixed to the supporting frame ( 4 ) by means of a fastening screw ( 2 ),
said fastening screw ( 2 ) comprising
a threaded shaft ( 21 ) having an external thread,
a screw head ( 23 ),
wherein a truncated circular cone section ( 22 ) is provided axially between the screw head ( 23 ) and the threaded shaft ( 21 ),
wherein the support frame ( 4 ) is clamped in sectionally between the screw head ( 23 ) and a fastening section ( 33 ) of the conveyor roller ( 3 ),
characterized in
that the supporting frame ( 4 ) has a polygonal bore ( 42 ), the truncated circular cone section ( 22 ) being arranged in the polygonal bore ( 42 ), and
wherein
the fastening section ( 33 ) has a threaded bore, which is designed to be complementary to the shreaded shaft ( 21 ).

Assignees

• Interroll Holding Ag

Inventors

• Mans Erwin
• Zinn Jürgen
• Kronholz Stephan
• Lubomierski Kai

Classifications

• F16B35/048

  Specially-shaped necks (F16B35/06 takes precedence) · CPC title

• F16B29/00

  Screwed connection with deformation of nut or auxiliary member while fastening ({Nuts fastened to surfaces by riveting F16B37/065}; members deformed for locking screws, bolts or nuts F16B39/22) · CPC title

• B65G39/12 Primary

  mounted on framework · CPC title