Elevator brake having a brake release feature
US-9321611-B2 · Apr 26, 2016 · US
Emergency stop device for elevator
US9586792B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9586792-B2 |
| Application number | US-201214419119-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 2, 2012 |
| Priority date | Aug 2, 2012 |
| Publication date | Mar 7, 2017 |
| Grant date | Mar 7, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An emergency stop device for an elevator, including: a supporting member; a receiving-side braking member provided to the supporting member; a pressing-side braking member for gripping a guide rail together with the receiving-side braking member by being displaced upward with respect to the supporting member while being guided by an inclined guide portion of the supporting member; and an adjusting elastic member for generating an elastic restoring force acting against the upward displacement of the pressing-side braking member. A magnitude of a gripping force, which is generated when the guide rail is gripped between the receiving-side braking member and the pressing-side braking member, increases as the pressing-side braking member is displaced upward with respect to the supporting member. A magnitude of the elastic restoring force of the adjusting elastic member increases as the pressing-side braking member is displaced upward with respect to the supporting member.
First claim
Opening claim text (preview).
The invention claimed is: 1. An emergency stop device for an elevating body of an elevator, comprising: a supporting member fixed to the elevating body and comprising an inclined guide portion that is inclined with respect to a guide rail provided for guiding the elevating body; a receiving-side braking member mounted to the supporting member and elastically pressed onto the guide rail; a pressing-side braking member for gripping the guide rail together with the receiving-side braking member by being displaced upward with respect to the supporting member while being guided to grip the guide rail by the inclined guide portion; an adjusting elastic member for generating an elastic restoring force acting against the upward displacement of the pressing-side braking member with respect to the supporting member, wherein a magnitude of a gripping force, which is generated when the guide rail is gripped between the receiving-side braking member and the pressing-side braking member, increases as the pressing-side braking member is displaced upward with respect to the supporting member, and wherein a magnitude of the elastic restoring force of the adjusting elastic member increases as the pressing-side braking member is displaced upward with respect to the supporting member; and a pressing mechanism comprising: an adjusting member which is relatively movable with respect to the pressing-side braking member and which is upwardly displaced with respect to the supporting member while being pressed by the pressing-side braking member; and a pressing member configured to be displaced with respect to the supporting member in a direction to separate from the guide rail in accordance with the upward displacement of the adjusting member, to thereby press and compress the adjusting elastic member, wherein the adjusting elastic member generates the elastic restoring force by being compressed by the pressing member. 2. The emergency stop device according to claim 1 , further comprising a stopper for inhibiting the upward displacement of the pressing-side braking member when the pressing-side braking member reaches a predetermined upper limit position with respect to the supporting member.
Assignees
Inventors
Classifications
- B66B5/22Primary
by means of linearly-movable wedges (B66B5/24 takes precedence) · CPC title
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- What does patent US9586792B2 cover?
- An emergency stop device for an elevator, including: a supporting member; a receiving-side braking member provided to the supporting member; a pressing-side braking member for gripping a guide rail together with the receiving-side braking member by being displaced upward with respect to the supporting member while being guided by an inclined guide portion of the supporting member; and an adjust…
- Who is the assignee on this patent?
- Shiraishi Naohiro, Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification B66B5/22. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 07 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).