CN2250072Y

CN2250072Y - Foldable self-locking device

Info

Publication number: CN2250072Y
Application number: CN 96208395
Authority: CN
Inventors: 李锦新
Original assignee: TIANJIAN STEEL FURNITURE PRODUCTS FACTORY XINHUI CITY
Current assignee: TIANJIAN STEEL FURNITURE PRODUCTS FACTORY XINHUI CITY
Priority date: 1996-04-24
Filing date: 1996-04-24
Publication date: 1997-03-26
Anticipated expiration: 2006-04-24

Abstract

The utility model relates to a foldable self-locking device which is composed of an angle-shaped plate, a connecting rod, a bolt, a spring and a spring seat, wherein one end of the connecting rod is hinged with the angle-shaped plate; the spring seat is fixed on the angle-shaped plate; the bolt penetrates the spring seat and is inserted into a bolt hole on the angle-shaped plate; the spring is sheathed on the bolt and is limited between the spring seat and the protruding position on the bolt. After a foldable chair is unfolded, the bolt is automatically inserted into the bolt holes of the angle-shaped plate and the connecting rod to lock the device. When the chair is folded, the bolt is pulled outwards slightly to unlock the device. The utility model has the advantages of convenient and reliable use, simple structure, easy manufacture, and wide application on various foldable stools and foldable tables.

Description

The folding seat self-locking device

The utility model is that a kind of folding seat that is used for is opened the fixedly self-locking device of usefulness of back.

Folding seat is a kind of widely used furniture, and at family, office building, even teahouse, restaurant are seen everywhere.Because folding seat is opened, draw in very convenient, and after gathering is folding, institute takes up space very little, both be convenient to deposit, and be convenient to carrying again and carry, but folding seat also had a defective, after exactly chair being opened, people's seat thereon, if buttocks too the seat of arm-chair the forward position or the back edge, seat then easily the upset, chair is toppled over, for this reason, there is the people just to design a kind of locking device, after folding seat is opened, with a hook that is positioned at the chair side, hook fixing on the seat side of a chair short pin, chair is locked, solved the upset of seat with this, the problem that chair is toppled over, but this locking device, when opening or draw chair in, all need manual operation, and when drawing chair in, locking device be opened not is a nothing the matter, service time is long, need use other instrument and just can open locking device toward contact, use very inconvenient, so this design fails extensively to be promoted.

The purpose of this utility model just provides a kind of folding seat self-locking device, it can automatically lock after folding seat is opened, and it is very reliable, when the folding chair, can very easily self-locking device be opened again, can not lock or lock inconvenient defective after having remedied present folding seat and opening.

The purpose of this utility model is achieved in that the utility model is made up of dihedral plate, connecting rod, latch, spring, spring base, the dihedral plate is divided into base plate and side plate two parts, connecting rod one end is hinged on the dihedral plate side plate, spring base also is fixed on the dihedral plate side plate, latch passes spring base and is inserted in the pin hole of being opened on the dihedral plate, the front end of latch is slope-shaped, spring housing also has pin hole on the position of corresponding dihedral plate pin hole on the latch and be limited on spring base and the latch between the prominent position on the connecting rod.

The utility model is that slope shape and the latch that is with spring lock folding seat owing to being to use front end, when folding seat is opened, connecting rod rotates, be pressed on the slope of latch front end, latch is withdrawed from, and the compression spring, when the pin hole of pin hole on the connecting rod and dihedral plate is overlapping, latch is promptly under the effect of spring, rebound, connecting rod is fixed on the dihedral plate, finish self-locking, when needs draw chair in, only need latch outside is drawn, connecting rod can use very convenient around the pin joint turn-off of dihedral plate, and simple in structure, handling ease.

Accompanying drawing 1 is the utility model structural representation.

Below in conjunction with accompanying drawing the utility model is described in further detail.

As shown in drawings: the utility model is by dihedral plate (1), connecting rod (2), latch (3), spring (4) and spring base (5) are formed, dihedral plate (1) is divided into base plate (7) and side plate (8) two parts, one end of connecting rod (2) is hinged on the side plate (8) of dihedral plate (1), spring base (5) also is fixed on the side plate (8) of dihedral plate (1), latch (3) passes spring base (5) and is inserted in the pin hole of being opened on the dihedral plate (1), the front end of latch (3) is slope-shaped, spring (4) is enclosed within latch (3) and goes up and be limited between the prominent position of one on spring base (5) and the latch (3), also has pin hole on the position of the pin hole of corresponding dihedral plate (1) on the connecting rod (2).During use, the base plate (7) of dihedral plate (1) is fixed on the bottom surface of chair seat, the other end of connecting rod (2) is hinged on the pin of chair, when chair is opened, connecting rod (2) rotates, be pressed on the slope of latch (3) front end, make the pin hole of latch (3) from dihedral plate (1) and withdraw from, and compression spring (4), when connecting rod (2) is rotated further pin hole on it and the pin hole on the dihedral plate (1) when overlapping, latch (3) promptly rebounds under the elastic force effect of spring (4), insert in the pin hole of dihedral plate (1) and connecting rod (2), connecting rod (2) is fixed on the dihedral plate (1), finishes self-locking, when needs fold gathering with chair, only with hand draws latch (3) outside, connecting rod (2) can draw in until chair fully around the pin joint turn-off on the dihedral plate (1), uses very convenient.

For with hand that latch (3) is more easy and convenient when being pulled outwardly, at tail end socket one small circle ring (6) of latch (3), during use, only with hand refers to hook small circle ring (6) and one draws gently outward, self-locking device can be opened.

The utility model decapacitation also can be used on various faldstools and various folding table outside using on folding seat.

Claims

1, a kind of folding seat self-locking device, it is characterized in that it is by dihedral plate (1), connecting rod (2), latch (3), spring (4) and spring base (5) are formed, dihedral plate (1) is divided into base plate (7) and side plate (8) two parts, one end of connecting rod (2) is hinged on the side plate (8), spring base (5) also is fixed on the side plate (8), latch (3) passes spring base (5) and is inserted in the pin hole of being opened on the dihedral plate (1), the front end of latch (3) is slope-shaped, spring (4) is enclosed within latch (3) and goes up and be limited between the prominent position of one on spring base (5) and the latch (3), also has pin hole on the position of corresponding dihedral plate (1) pin hole on the connecting rod (2).

2, folding seat self-locking device according to claim 1 is characterized in that at latch (3) afterbody socket one small circle ring (6).