JPH01134649U

JPH01134649U -

Info

Publication number: JPH01134649U
Application number: JP3119588U
Authority: JP
Priority date: 1988-03-09
Filing date: 1988-03-09
Publication date: 1989-09-13

Description

[Brief explanation of the drawing]

第１図〜第３図は本考案の請求項第(1)項記載
のものであり、第１図はその主要部断面図、第２
図は第１図のア―ア線矢視断面図、第３図は第１
図のイ矢視平面図、第４図〜第６図は本考案の請
求項第(2)項記載のものであり、第４図はその主
要部断面図、第５図は第４図のウ―ウ線矢視断面
図、第６図は第４図の平面図、第７図は従来のロ
ール体支持軸の装着状態の構造の一例を示す要部
正面断面図である。１……ロール体、２，２′……支持軸、３，６
……凸起金、４……止め輪、５，８……弾性体、
７……ねじ金、１ａ……シート、１ｂ……つば金
、１ｃ……芯管、３ａ，６ａ……突起部。 1 to 3 are what is stated in claim (1) of the present invention, and FIG. 1 is a cross-sectional view of the main part thereof, and FIG.
The figure is a sectional view taken along the line A--A in Figure 1, and Figure 3 is a cross-sectional view taken along the line A-A in Figure 1.
The plan view in the direction of arrow A and FIGS. 4 to 6 are those described in claim (2) of the present invention, FIG. 4 is a sectional view of the main part thereof, and FIG. 6 is a plan view of FIG. 4, and FIG. 7 is a front sectional view of a main part showing an example of the structure of a conventional roll body support shaft in an attached state. 1 ... Roll body, 2, 2'... Support shaft, 3, 6
... Convex metal, 4 ... Retaining ring, 5, 8 ... Elastic body,
7... Screw metal, 1a... Sheet, 1b... Flange metal, 1c... Core tube, 3a, 6a... Projection.

Claims

[Claims for Utility Model Registration] (1) In a structure for removably holding a roll body for winding paper, film, etc. by moving a support shaft from both ends, and applying a brake torque for tension, At least three protrusions are provided on the outer periphery of the support shaft to press against the inner diameter part of the roll body with some interference, and a conical protrusion is provided on the axis side of the protrusions. The protrusion has a point B at the tip of the protrusion and a point P at the corner with respect to a tangent on the outer diameter of the protrusion that connects the center point A of the support shaft and the point P at the corner of the protrusion on the roll body side. It is formed symmetrically so that the difference angle θ between the connecting convex metal and the tangent on the outer diameter is equal to or greater than the friction angle between the internal diameter of the roll and the convex metal, and the convex metal is movable in the longitudinal direction of the shaft. hold position without
The support shaft is provided so as to freely rotate by a required amount in the radial direction, and an elastic body such as rubber is provided above the protrusion to maintain the neutral elasticity of the protrusion, and a retaining ring is provided above the elastic body. Attach it to the support shaft side,
The retaining ring locks the projection of the protruding metal, which is held in position by an elastic body, and as the roll body rotates, the corner P point of the protruding metal moves and bites into the inner diameter of the roll to generate rotational torque. 1. A structure for a roll support shaft, characterized in that it is integrally configured to transmit. (2) Move the support shaft from both ends to sandwich the roll body for winding paper, film, etc. so that it can be attached and detached.
Further, in the structure for applying a brake torque for tension, at least three protrusions are provided on the outer peripheral portion of the support shaft, and the protrusions are pressed against the inner diameter portion of the roll body with a slight interference, and the protrusions are A conical protrusion is provided on the shaft center side of the raised metal, and the protrusion is connected to a tangent on the outer diameter of the raised metal connecting _one point at the center A of the support shaft and _one point at the corner P on the roll body side of the raised metal. On the other hand, the difference angle θ ₁ between the tangent on the outer diameter of the protruding metal connecting the tip _B of the protrusion and the corner P is greater than or equal to the friction _angle between the inner diameter of the roll and the protruding metal. An elastic body such as rubber is provided on the upper side of the protrusion for maintaining the neutral elasticity of the protruding metal, and a screw portion is formed on the upper side of the elastic body in the hole of the support shaft. The center part of the screw has a rectangular hole and an elongated hole that allows the convex metal to remain in position without moving in the longitudinal direction of the shaft, and to freely rotate the required amount in the radial direction. A gap is provided on the side so that the convex metal can rotate, and a hole is drilled on the short side to hold the position so that the convex metal cannot rotate, and the convex metal, which is held in position by an elastic body using the screw, pops out. The roll support shaft is characterized in that it is integrally configured so that _one point P of the protruding metal moves as the roll body rotates and bites into the internal diameter of the roll to transmit rotational torque. Structure.