Boot band

Patent metadata

Field	Value
Publication number	US-9624950-B2
Application number	US-201214129371-A
Country	US
Kind code	B2
Filing date	May 31, 2012
Priority date	Jun 28, 2011
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

Provided is a boot band that is configured for preventing the occurrence of buckling in the inner-layer portion of a band body. In the boot band, by applying a diameter-reducing tightening force on the band body when an engagement pawl of an inner-layer portion of the band body has entered a top-end engagement hole of an outer-layer portion of the band body, the top-end engagement hole rides over the engagement pawl. Buckling is prevented by providing, at the area of the top-end engagement hole opposite where the engagement pawl enters therein, a guide that faces the engagement pawl.

First claim

The invention claimed is:

1. A boot band comprising:
a band body that is wound, for clamping in a ring-like form around a member to be clamped, in such a way that an outer-layer portion overlaps an inner-layer portion;
a first boot-band pawl that is formed on a top end side of the outer-layer portion:
a planar terminal end portion formed in the outer-layer portion, and that is located nearer to the top end of the outer-layer portion than the first boot-band pawl;
a second boot-band pawl formed in the inner-layer portion, that has an opening into which the terminal end portion can be inserted, and a pressing part that presses, from the outside, the terminal end portion that is inserted into the opening, and that clamps the band body together with the first boot-band pawl so that the band body is reduced in diameter;
a plurality of engagement holes formed along the lengthwise direction in the outer-layer portion;
an engagement pawl formed on the inner-layer portion, and that rises in a slope-like form facing the top end side of the outer-layer portion,
wherein in a state where the engagement pawl is inserted into a top-end side engagement hole that is located at the top end side of the outer-layer portion in the lengthwise direction, clamping force is applied to the band body in the diameter-reducing direction, so that the top-end side engagement hole is moved over the engagement pawl, whereby a following engagement hole is engaged with the engagement pawl;
a guide means disposed at a back end portion of the top-end side engagement hole, with the guide means being opposite the engagement pawl, wherein the guide means has a slope portion along the engagement pawl, and
wherein the clamping force in the diameter-reducing direction allows the guide means to climb over the back face of the engagement pawl, and
wherein the slope of the back face of the engagement pawl is formed to include two stages of angles, an inclination angle β at the beginning of the climbing over and an inclination angle α at the end of the climbing over, and the slope portion of the guide means has an inclination angle of γ, and the relationship between α, β, and γ being α<β<γ.

2. The boot band according to claim 1 , wherein the guide means is a round-portion provided at the inner-layer portion side in the back end portion of the top-end side engagement hole.

3. The boot band according to claim 1 , wherein the guide means is a guide pawl that rises with a slope from the back end portion of the top-end side engagement hole in the direction in which the engagement pawl rises, and the slope portion is provided at an opposing surface of the guide pawl, with the opposing surface being opposite the engagement pawl.

4. The boot band according to claim 1 , wherein the guide means is an inner surface of the back end portion in the top-end side engagement hole, with the back end portion being opposite the engagement pawl, and the slope portion is provided at the inner surface of the back end portion.

Assignees

• Ogino Takashi
• Ikeda Hiroshi
• Nhk Spring Co Ltd

Inventors

• Ogino Takashi
• Ikeda Hiroshi

Classifications

• F16B2/08 Primary

  using bands · CPC title

• Y10T24/14

  Bale and package ties, hose clamps · CPC title

• F16D2003/22316

  Means for fastening or attaching the bellows or gaiters · CPC title

• F16J3/042

  Fastening details · CPC title

• F16D3/845

  allowing relative movement of joint parts due to the flexing of the cover · CPC title