CN2380102Y

CN2380102Y - Improved foldable supporting device

Info

Publication number: CN2380102Y
Application number: CN 99213915
Authority: CN
Inventors: 苏垣
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-22
Filing date: 1999-06-22
Publication date: 2000-05-31
Anticipated expiration: 2009-06-22

Abstract

The utility model relates to a folding supporting device which comprises a fixed seat, a movable seat, a lever, a draw rod and a supporting rod, wherein, an outer convex block is mainly arranged on the outer side of the lever, and the inner side of the supporting rod is provided with an inner concave pit corresponding to the outer convex block. Therefore, the utility model is labor-saving to be locked and unlocked when the utility model is folded. Besides, the utility model can be locked reliably, and the life time of a locking structure is long simultaneously.

Description

The collapsible bracing or strutting arrangement of improvement

The utility model relates to a kind of collapsible bracing or strutting arrangement.

At present, traditional collapsible bracing or strutting arrangement is the butterfly hinge-type, connects owing to wear axle for reel between reservation, moving seat and the folding support member, and rigid support power is little, wearing and tearing back support force also can reduce, and reservation, moving affixed platen often occur not at grade; In recent years, begin to occur a kind of folding bracing or strutting arrangement of forming by reservation, moving seat and several support members of quadric chain formula, rigid support power is big, is the inner termination by moving seat fixed block when still folding, under impulsive force, pressure compresses corresponding fixed block external end head in the reservation and locks, not only locking is hard, and use for a long time can make two fixed block end wears and cause locking to lose efficacy, simultaneously, the long-term use under the impact force action, moving seat is hinged also fragile with reservation.

In view of this, the purpose of this utility model provides a kind of collapsible bracing or strutting arrangement of improvement, it be when folding with the lever outside projection of four connecting rods against the inboard corresponding position of strut and make its flexural deformation and locking mutually, can unclamp easily again and support moving seat.

The purpose of this utility model is achieved in that it comprises reservation, moving seat, lever, pull bar and strut, wherein reservation articulates near end mutually with moving seat, and on this drive-connecting shaft, also articulate the pull bar upper end, lever right-hand member and strut left end articulate, and the strut right-hand member is articulated on the moving seat, the left end outrigger shaft sliding fit of lever is in the elongated slot rail of reservation, the pull bar lower end is articulated on the lever to the reservation direction obliquely, it is characterized in that: the outside of lever is provided with an outer projection, and the inboard of strut is provided with and the corresponding inside recess of outer projection.

Described outer projection top is a sphere, and outer projection protrusion height is bigger than the described inside recess degree of depth.

Owing to adopt such scheme: folding locking, unclamp not difficultly, and locking is also reliable, simultaneously the locking mechanism long service life.

Below in conjunction with drawings and Examples the utility model is advanced one and relate to explanation.

Fig. 1 the utility model exemplary embodiments schematic diagram.

Locking state part sectioned view when Fig. 2 the utility model exemplary embodiments is folding.

Among the figure: 1, reservation, 11, the elongated slot rail, 2, moving seat, 21, outrigger shaft, 211, torsion spring, 3, lever, 31, slide-bar, 32, outer projection, 4, pull bar, 5, strut, 51, inside recess.

Present embodiment comprises reservation 1, moving seat 2, lever 3, pull bar 4 and strut 5, as shown in Figure 1, 2, wherein:

Reservation 1 is the L-square that is made of the overhanging level board of a vertical plate and top thereof, offers an elongated slot rail 11 on its vertical plate, and level board belongs to prior art for being fixed in the desktop bottom surface.

Moving seat 2 is the L-squares that are made of a level board of stretching in vertical plate and the top thereof, its vertical plate right-hand end protruding one horizontal outrigger shaft 21.And (end is against moving seat 2 to be nested with a torsion spring 211 on this outrigger shaft 21, the other end is against strut 5, when keeping moving seat 2 to be in level with reservation 1 when vertical (or), keeps strut 5 supports to move 2 and is in stable state, should articulate with reservation 1 in the moving seat 2 left ends outside, belong to prior art.

Lever 3 one ends (left end) are provided with stretches cross sliding shaft 31 in one, be engaged in slidably in the elongated slot rail 11 of reservation 1, and lever 3 other ends (right-hand member) are articulated in strut 5 left end inboards, and strut 5 right-hand members are articulated on the outrigger shaft 21 of moving seat 2, pull bar 4 upper ends are articulated in the outside of moving seat 2 and reservation 1 drive-connecting shaft, and its lower end is articulated in the inboard of lever 3 left tiltingly, form quadric chain, push away strut 5 downwards and support moving seat 2 by lever 3, and the support of

lever

3 and 4 on pull bar with joint efforts all the time to the right; So support reliably, belong to prior art.The outside on the lever 3 is provided with an outer projection 32, salient position that should outer projection 32 can be with screw thread or pad adjustment, be in folded state at moving seat 2 with reservation 1, inboard opposite position place is provided with an inside recess 51 (outer projection 32 protrusion heights of its depth ratio are little) on the strut 5, obtain the location when making outer projection 32 hold the outwardly-bent distortion of strut 5, be easier to when making outer projection 32 disengaging struts 5 again (not hard).

Claims

1, a kind of collapsible bracing or strutting arrangement of improvement, it comprises reservation (1), moving seat (2), lever (3), pull bar (4) and strut (5), wherein reservation (1) articulates near end mutually with moving seat (2), and on this drive-connecting shaft, also articulate pull bar (4) upper end, lever (3) right-hand member and strut (5) left end articulate, and strut (5) right-hand member is articulated on the moving seat (2), left end outrigger shaft (21) sliding fit of lever (3) is in the elongated slot rail (11) of reservation (1), pull bar (4) lower end is articulated on the lever (3) obliquely to reservation (1) direction, it is characterized in that: the outside of lever (3) is provided with an outer projection (32), and the inboard of strut (5) is provided with and the corresponding inside recess of outer projection (32) (51).

2, by the collapsible bracing or strutting arrangement of the described improvement of claim 1, it is characterized in that: described outer projection (32) top is a sphere, and outer projection (32) protrusion height is bigger than described inside recess (51) degree of depth.