Elevator car frame assembly

Patent metadata

Field	Value
Publication number	US-11332344-B2
Application number	US-201815981610-A
Country	US
Kind code	B2
Filing date	May 16, 2018
Priority date	May 16, 2018
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

An elevator car of an elevator system includes a car body and a car frame supportive of the car body. The car frame includes two opposing side frames, each side frame formed from a plurality of side frame segments, including two upright members and one or more upright braces connecting the two upright members, adjacent side frame segments secured to each other via a joint. A method of installation of an elevator car of an elevator system includes positioning a first side frame segment of a plurality of side frame segments adjacent to second side frame segment of the plurality of side frame segments, and securing the first side frame segment to the second side frame segment via a splice joint thereby constructing a car frame of the elevator car. One or more car bodies are installed into the car frame.

First claim

What is claimed is:

1. An elevator car of an elevator system, comprising:
a car body; and
a car frame supportive of the car body, the car frame including two opposing side frames, each side frame formed from a plurality of side frame segments, including:
two upright members, each upright member of the two upright members having a hollow cross-section including an outer surface and an inner surface; and
one or more upright braces connecting the two upright members, adjacent side frame segments secured to each other via a joint;
wherein the joint is a splice joint and one or more tubular support members are disposed in the hollow cross-section, the one or more tubular support members configured to receive a fastener of the splice joint and prevent damage to the upright member due to securing of the splice joint, an end of the one or more tubular support members abutting the inner surface;
wherein the fastener extends through an upright member opening in the upright member, the tubular support member having a support outer diameter greater than an opening diameter of the upright member opening;
wherein the fastener extends into a first axial end of the tubular support member and out of a second axial end of the tubular support member opposite the first axial end.

2. The elevator car of claim 1 , wherein the splice joint is configured to prevent shear loading of the fastener.

3. The elevator car of claim 1 , wherein a first upright member of the two upright members has a first wall thickness and a second upright member of the two upright members has a second wall thickness different from the first wall thickness.

4. The elevator car of claim 1 , wherein the splice joint further comprises a splice plate extending from an upright member of a first side frame segment to an upright member of a second frame segment, the fastener extending through the splice plate.

5. The elevator car of claim 1 , wherein the tubular support member is secured in the upright member via welding.

6. The elevator car of claim 1 , further comprising an alignment feature disposed at a side frame segment to align the side frame segment with an adjacent side frame segment and a guide rail of the elevator system.

7. The elevator car of claim 6 , wherein the alignment feature comprises two alignment brackets defining a bracket gap therebetween, the bracket gap receptive of a rail blade of the guide rail.

8. The elevator car of claim 6 , wherein the alignment feature includes one or more adjustment elements to adjust a position of the side frame segment relative to the guide rail.

9. The elevator car of claim 6 , wherein the alignment feature is secured to the upright brace.

10. An elevator system, comprising:
a hoistway;
a guide rail secured in the hoistway; and
an elevator car including:
a car body; and
a car frame supportive of the car body, the car frame including two opposing side frames, each side frame formed from a plurality of side frame segments, including:
two upright members, each upright member of the two upright members having a hollow cross-section including an outer surface and an inner surface; and
one or more upright braces connecting the two upright members, adjacent side frame segments secured to each other via a splice joint;
wherein one or more tubular support members are disposed in the hollow cross-section, the one or more tubular support members configured to receive a fastener of the splice joint and prevent damage to the upright member due to securing of the splice joint, an end of the one or more tubular support members abutting the inner surface;
wherein the fastener extends through an upright member opening in the upright member, the tubular support member having a support outer diameter greater than an opening diameter of the upright member opening;
wherein the fastener extends into a first axial end of the tubular support member and out of a second axial end of the tubular support member opposite the first axial end.

11. The elevator system of claim 10 , wherein the splice joint further comprises a splice plate extending from an upright member of a first side frame segment to an upright member of a second frame segment, the fastener extending through the splice plate.

12. The elevator system of claim 10 , further comprising an alignment feature disposed at a side frame segment to align the side frame segment with an adjacent side frame segment and the guide rail.

13. The elevator system of claim 12 , wherein the alignment feature comprises two alignment brackets defining a bracket gap therebetween, the bracket gap receptive of a rail blade of the guide rail.

14. The elevator system of claim 12 , wherein the alignment feature includes one or more adjustment elements to adjust a position of the side frame segment relative to the guide rail.

15. A method of installation of an elevator car of an elevator system, comprising:
positioning a first side frame segment of a plurality of side frame segments adjacent to second side frame segment of the plurality of side frame segments, each side frame segment of the plurality of side frame segments including:
two upright members, each upright member of the two upright members having a hollow cross-section including an outer surface and an inner surface; and
one or more upright braces connecting the two upright members, adjacent side frame segments secured to each other via a joint;

securing the first side frame segment to the second side frame segment via a splice joint thereby constructing a car frame of the elevator car, wherein the securing includes installing one or more tubular support members in the hollow cross-section, the one or more tubular support members configured to receive a fastener of the splice joint and prevent damage to the upright member due to securing of the splice joint, an end of the one or more tubular support members abutting the inner surface;
installing one or more car bodies into the car frame;
wherein the fastener extends through an upright member opening in the upright member, the tubular support member having a support outer diameter greater than an opening diameter of the upright member opening;
wherein the fastener extends into a first axial end of the tubular support member and out of a second axial end of the tubular support member opposite the first axial end.

16. The method of claim 15 , further comprising aligning the first side frame segment to a guide rail of the elevator system and to the second side frame segment via an alignment feature of the first side frame segment.

17. The method of claim 16 , wherein aligning the first frame segment to the guide rail further comprises receiving a rail blade of the guide rail in a bracket gap of the alignment feature.

18. The method of claim 15 , further comprising adjusting a position of the first side frame segment relative to the guide rail via one or more adjustment elements of the alignment feature.

Assignees

• Otis Elevator Co

Inventors

• Ericson Richard J
• Mastriano Meghan
• Cheng Loi
• Swaybill Bruce P

Classifications

• F16B7/182

  for coaxial connections of two rods or tubes · CPC title

• B66B11/0226

  Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation · CPC title

• B66B11/0213 Primary

  for multi-deck cars · CPC title

• B66B11/0206 Primary

  Car frames · CPC title

• B66B2201/306

  Multi-deck elevator cars · CPC title