CN2484831Y

CN2484831Y - Guide rail with elastic repositioner

Info

Publication number: CN2484831Y
Application number: CN 01240632
Authority: CN
Inventors: 李绍汉
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-05-28
Filing date: 2001-05-28
Publication date: 2002-04-10
Anticipated expiration: 2011-05-28

Abstract

A mechanical guide rail of drawer with an elasticity returning device includes a fixed rail, a movable rail, a bearing with a rack and an elasticity returning device which includes a holder, a sliding swing block, a drive spring and a movable pin. The holder is arranged on the fixed rail and has a sliding slot which has a gap, the sliding swing block has a slider and control wall which includes a direct wall and inclined wall, driving the spring to connect the holder with the sliding swing block. The movable pin is arranged on the movable rail and is just opposite to the control wall of the sliding block. The utility model with simple structure can return and close tightly and is applicable to any drawer with the strict requirements of tight closing and to the opening and closed rails of similar mechanisms.

Description

The guide rail of band elastic force returning device

The utility model relates to a kind of mechanical guide rail, especially a kind of mechanical guide rail of drawer.

Present widely used drawer guideway does not install return mechanism, the switch of drawer is entirely by manpower, so drawer close fashionable just drawer can not be pushed into utmost point position, back slightly because of carelessness and and leave the slit between the drawer frame, thereby cause cockroach, insect to climb into, extremely unhygienic.

The utility model purpose is to provide a kind of auto-closing and the big mechanical guide rail of returning place force.

The utility model comprises retaining rail, movable rail and tape holder bearing, also has the elastic force returning device in addition, the elastic force returning device comprises driving spring, fixed mount, slip centering block and finger, fixed mount is installed on the retaining rail, fixed mount has chute, chute is vertically arranged along guide rail, chute has breach, the slip centering block have control wall and with the suitable slide block of chute, the control wall comprises right straight wall and skew wall mutually, skew wall is positioned at the breach end near chute, and the slide block cunning of slip centering block fits in the chute of fixed mount and with fixed mount and slip centering block and slides over together; Finger is on movable rail and over against the control wall of slip centering block, and driving spring then is connected between fixed mount and the slip centering block, and the angle α that the straight wall of slip centering block and skew wall and guide rail stretch direction of advance is not more than 90 °.

Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail:

Fig. 1 folds the rail state schematic diagram for the utility model embodiment's;

Fig. 2 opens the rail state schematic diagram for embodiment's;

Fig. 3 is the elastic force returning device front schematic view of embodiment;

Fig. 4 is the slip centering block front schematic view of embodiment;

Fig. 5 is the fixed mount back schematic diagram of embodiment.

Referring to figs. 1 through Fig. 5, embodiment is two joint rails, and it comprises retaining rail 5, movable rail 2, tape holder bearing 6, support 3, quick-mounting clamp 1 and elastic force returning device 4.Elastic force returning device 4 comprises fixed mount 7, slip centering block 8, driving spring 10 and finger 9, fixed mount 7 is installed in retaining rail 5 rear ends, the centre longitudinally has the chute 19 that length is a bit larger tham slip centering block 8 strokes, there is cylinder 17 at chute 19 rear portions, trough rim has breach 18 on the front portion, slip centering block 8 has columniform slide block 11 and the long pointed slide block 11 suitable with chute 19, these two slide blocks 11 can slide front and back in chute 19 with chute 19 sliding fitting over also, the lower central of slip centering block 8 has control wall 14, control wall 14 comprises long straight wall 13 and short skew wall 15, skew wall 15 is positioned at breach 18 ends near chute 19, and the driving spring 10 of Extension Spring-type is enclosed between the columniform slide block 11 at fixed mount 7 rear portion cylinders 17 and slip centering block 8 rear portions.Finger 9 is contained on the movable rail 2 and over against the control wall 14 of slip centering block 8.Fixed mount 7 has locating slot 16, and slip centering block 8 has the locating piece 12 adaptive with locating slot 16.During the rail closure state, the locating slot 16 of fixed mount 7 is stuck with the locating piece 12 of slip centering block 8, and driving spring 10 is minimum stretch, and the straight wall 13 of control wall 14 becomes 90 ° with the angle of guide rail, and the finger 9 of movable rail 2 presses against on the straight wall 13.When guide rail opens, draw drawer forward, the finger 9 of movable rail 2 pushes the skew wall 15 of control wall 14 forward thereupon, and drive slip centering block 8 forward until chute 19 front ends of fixed mount 7, driving spring 10 is maximum tension, be subjected to driving spring 10 pulling force and finger 9 thrust, 8 swings of slip centering block cause the slide block 11 of obelisk to be absorbed in the breach 18 of fixed mount 7 for 6 °, skew wall 15 and the guide rail of centering block 8 of sliding this moment stretches anterior angle and is minimum 70 °, thereby the finger 9 on the activity rail 2 that gets loose, movable rail 2 are able to freely continue slidable travel until preceding utmost point position.When guide rail folds, push away drawer backward, the finger 9 of movable rail 2 pushes the straight wall 13 of slip centering block 8 thereupon backward, overcome driving spring 10 pulling force, produce oscillatory forces and drive 6 ° of slip centering block 8 backswing, the slide block 11 of obelisk is broken away from the breach 18 of chute 19, and the centering block 8 that slides then is sliding until utmost point position, back along chute 19 backs of fixed mount 7.

The utility model is simple in structure, self-return closes and to close, and returning place force is big, and drawer closes and closes closely reliably, is applicable to that any requirement is closed to close the folding track of tight drawer and similar mechanism.

Claims

1, a kind of guide rail with the elastic force returning device comprises retaining rail (5), movable rail (2) and tape holder bearing (6), it is characterized in that: guide rail also has elastic force returning device (4), and elastic force returning device (4) comprises driving spring (10), fixed mount (7), slip centering block (8) and finger (9); Fixed mount (7) is installed on the retaining rail (5), fixed mount (7) has chute (19), chute (19) is vertically arranged along guide rail, chute (19) has breach (18), slip centering block (8) have control wall (14) and with the suitable slide block (11) of chute (19), control wall (14) comprises right straight wall (13) and skew wall (15) mutually, and skew wall (15) is positioned at breach (18) end near chute (19); The slide block (11) of slip centering block (8) is slided in the chute (19) that fits over fixed mount (7) and with fixed mount (7) and slip centering block (8) and is slided over together, finger (9) is gone up and over against the control wall (14) of slip centering block (8), driving spring (10) is connected between fixed mount (7) and the slip centering block (8) at movable rail (2).

2, the guide rail of band elastic force returning device according to claim 1 is characterized in that: the straight wall (13) of slip centering block (8) and skew wall (15) are not more than 90 ° with the angle α that guide rail stretches direction of advance.