CN2202782Y

CN2202782Y - Mechanism for opening door at left and right direction

Info

Publication number: CN2202782Y
Application number: CN 94239054
Authority: CN
Inventors: 许建江
Original assignee: Spaceflight Industry Ministry Fenghua Refrigerator Kunshan Branch Factory
Current assignee: Spaceflight Industry Ministry Fenghua Refrigerator Kunshan Branch Factory
Priority date: 1994-07-18
Filing date: 1994-07-18
Publication date: 1995-07-05
Anticipated expiration: 2004-07-18

Abstract

The utility model relates to a mechanism for opening door towards left and right. The end part of a door is provided with a base plate whose both ends are symmetrically and respectively fixedly provided with the shaft pin of a shifting block and reset blocks; a connecting rod whose both ends form bend hook shapes is arranged between the two reset blocks; a shifting rod on the shifting block is embedded into the bend hooks of the connecting rod. When the side of the mechanism, which is used as a door, is opened, the shifting block and the shifting rod drive the connecting rod under the door opening action, and the other side of the door can be locked and can not be opened again. As also provided with a safety device and a door weight-bearing device, the mechanism has safe utilization and labor saving. The mechanism has simple structure, simple structure, low cost, and reliable use.

Description

Mechanism for opening door at left and right direction

The utility model relates to a kind of mechanism of switch door, refer to particularly a kind of can be at random from the left side of door or the mechanism of right-side switch door, this mechanism is specially adapted to household electric refrigerator, about household freezer and other need arbitrarily on the furniture such as the utensil of switch door or cabinet.

Usually, household electric refrigerator can only be from a side switch door of door, so its position in indoor layout will be restricted, and other utensils or furniture also can run into same situation.In order to overcome this shortcoming, disclose in Chinese patent CN1038694A " switching device of door " a case a kind of can about the structure of opening the door arbitrarily.This device can be opened door from either side when door is closed in order to guarantee, and when the Men Congyi side is opened, its opposite side must be lockable and the requirement that can't throw off again, adopted one the cover by pair of links be connected the connecting elements that connecting rod constitutes quadric chain, on this connecting elements, be provided with the bending locking groove that forms by slide-and-guide portion and lock portion; Respectively establish the stop pin plate of a pin with lock and occlusal crib in addition in the door both sides, lock pin can move in locking groove, occlusal crib and door-hinge interlock mutually.In this mechanism, the lock pin on the stop pin plate is a driving link, also is main stressed member, will bear the power that alternately changes in the motion of repeatedly switch door, and stress badly is difficult to guarantee the reliability of its long-term work; Because it moves in locking groove,, thereby the fit clearance between pin and the groove is increased simultaneously, reduced reliability and application life with the friction of groove contact both sides, wearing and tearing easily; The processing and manufacturing of the structure of connecting elements and locking groove thereof is also complicated in addition, has improved manufacturing cost.

The purpose of this utility model is that proposition is a kind of simple in structure, makes assembling easily, and cost is lower, the mechanism of opening the door arbitrarily about service-strong.

The utility model is to constitute like this, the end of door is provided with a mounting baseplate, each fixes a pivot pin symmetrically at the substrate two ends, be with a shifting block and a resetting block on the pivot pin, shifting block and resetting block all can rotate around pivot pin, card has two ends to be the connecting rod of hook solid between the release link of two ends resetting block, and the driving lever on the shifting block is embedded in the crotch of connecting rod, and guiding device is equipped with in the connecting rod both sides; Be arranged with door-hinge on the framework of the left and right sides of door, and door-hinge at closing time is between the opening outside two ends shifting block and the resetting block.

In order to guarantee the reliability of switch door action, can respectively establish the described door-opening mechanism of a cover at the upper and lower end of door.

For the safety of safety action, this device also is provided with safeties, and this device is made up of support, spacer pin, fork-shaped push rod, spring, and support is fixed on the mounting baseplate corresponding with two limited impressions that are located at the connecting rod outside.When spacer pin broke away from limited impression on the connecting rod under the effect of fork-shaped push rod, connecting rod can move, and when spacer pin was arranged in the stopper slot of connecting rod under spring action, connecting rod can not move.

The utility model is simple in structure, compact, manufacturing, easy to assembly, and reliable operation, manufacturing cost is lower.

Be described further below in conjunction with accompanying drawing and embodiment.

But Fig. 1 is the schematic diagram of mechanism when door is closed of left and right opening door;

Schematic diagram when Fig. 2 opens on the right side of door for the mechanism of left and right opening door;

But Fig. 3 is the perspective exploded view of the mechanism of left and right opening door;

Fig. 4 is a kind of structure of door-hinge;

Fig. 5 is the right view of Fig. 4.

Fig. 6 is the A-A sectional view among Fig. 1.

Among the figure: 1 left resetting block, 1a release link, 2 left shifting blocks, 2a driving lever, 3 left pivot pins, 4 rollers, 5 right pivot pins, 6 torsion springs, 7 axis of guides, 8 directive wheels, 9 connecting rods, 9a stopper slot, 9b cam surface, 10 fork-shaped push rods, 11 supports, 12 pins, 13 right shifting blocks, 13a driving lever, 14 right resetting blocks, 14a release link, 15 substrates, 16 springs, 17 spacer pins, 18 steel balls, 19 door-hinges, 20 door-hinge base plates, 21,22 door bodies, 23 limited impressions.As shown in Figure 1, this mechanism places on the substrate 15, each fixes a

pivot pin

3 and 5 symmetrically at the substrate two ends, respectively be with 2,13 and resetting blocks 1,14 of a shifting block on each pivot pin, shifting block and resetting block all can rotate around this pivot pin, card has two ends to be the connecting rod 9 of hook solid between the release link of two resetting blocks 1 and 14, and the driving lever on the shifting

block

2,13 is embedded in the crotch of connecting rod 9.The crotch inboard at connecting rod 9 two ends respectively is provided with the stopper slot 9a and a cam surface 9b who is subjected to driving lever 2a effect that can limit shifting block driving lever 2a motion symmetrically.The connecting rod both sides are provided with the guiding device of being made up of the axis of guide 7 and directive wheel 8.

This device is located at the upper end or the lower end of a body 21 during use, or upper and lower end is respectively established a cover.Corresponding position on the framework 22 of left and right sides door is provided with door-hinge 19 symmetrically simultaneously, and the position of door-hinge 19 should make it between the opening that just is in two ends shifting block and the resetting block outside at closing time.

Its course of work is such, and when door was in closed condition, door-hinge 19 was in initial position, promptly between the opening in the shifting block and the resetting block outside.When door 21 is opened, now establish and upwards open from the right side, as Fig. 2, the shifting block 13 that the action of opening the door makes right door-hinge 19 stir the right side clockwise rotates, and door-hinge is deviate from from the opening part of shifting block and resetting block, and the while is along with the rotation of shifting block 13, its driving lever 13a moves along the cam surface 9b of connecting rod 9, and connecting rod is moved right hook the driving lever 2a of left shifting block 2 to the stopper slot 9a of left end, limited the rotation of left shifting block, the door in left side can't be opened.At closing time, door-hinge 19 enters the opening of shifting block and resetting block, and promotion resetting block, resetting block 14 and shifting block 13 are rotated counterclockwise simultaneously, release link 14a promotes the right outside of connecting rod 9, make connecting rod be moved to the left the stopper slot that left driving lever 2a deviates from left end, return to original state, at this moment just can about open the door arbitrarily.

In order to make more flexibility and reliability of switch door,, be equipped with roller 4 on release link 1a, the 14a at driving lever 2a, 13a.And between each shifting block and connecting rod, be provided with torsion spring 6, put in place to guarantee action.One end of described torsion spring 6 is separately fixed on driving lever 2a, the 13a, and the other end then is separately fixed on the pin 12 on the connecting rod 9.

After opening in order to ensure a side door, another side door can not be opened again, and this mechanism also is provided with cover safeties.Safeties are by the support 11 that is fixed on the substrate, fork-shaped push rod 10, and spacer pin 17, spring 16 is formed with two limited impressions 23 on connecting rod 9 correspondence positions.Its effect can be referring to Fig. 1, Fig. 2 and Fig. 6, and when door was closed, fork-shaped push rod 10 contacted with door body, makes spacer pin 17 withdraw from limited impression 23, makes connecting rod 9 be in transportable state.When door when either side is opened, fork-shaped push rod 10 breaks away from door body, spacer pin 17 enters left limit groove or right limit groove 23 under the effect of spring 16, limited the motion of connecting rod 9.

Open more laborsavingly at closing time for making, this mechanism also is provided with the support mechanism of a cover door.Door-hinge 19 is fixed on the door body 22 by door-hinge base plate 20, in the end of two lateral lower door axles steel ball 18(or roller is housed), shown in Figure 5 as Fig. 4, steel ball 18 or roller portion protrude in the end face of door-hinge, and contact with the bearing surface of door body lower end.When door was closed, the steel ball on the door-hinge of both sides bore a weight simultaneously; When opening the door, produce between the lower surface of door and the steel ball and roll, can be laborsaving.

Claims

But 1, a kind of mechanism of left and right opening door, comprise door and the framework that door is installed, framework is provided with door-hinge, it is characterized in that being provided with a substrate in the end of described door, each fixes a pivot pin symmetrically at the substrate two ends, respectively is with a shifting block and a resetting block on each pivot pin, shifting block and resetting block all can rotate around this pivot pin, card has two ends to be the connecting rod of hook solid between the release link of two resetting blocks, and the driving lever on the shifting block is embedded in the crotch of connecting rod, and guiding device is equipped with in the connecting rod both sides; Corresponding position on the framework of left and right sides door is provided with door-hinge symmetrically, and door-hinge at closing time is between the opening in the two ends shifting block and the resetting block outside.
2, door-opening mechanism according to claim 1 is characterized in that the two ends of described mechanism respectively are provided with a torsion spring, and an end of torsion spring is fixed on the driving lever of shifting block, and the other end is fixed on the connecting rod.
3, door-opening mechanism according to claim 1 is characterized in that the crotch inboard at described connecting rod two ends respectively is provided with the stopper slot and a cam surface that is subjected to described driving lever effect that can limit the motion of shifting block driving lever symmetrically.
4, door-opening mechanism according to claim 1 is characterized in that driving lever on the described shifting block and the release link on the resetting block are equipped with roller.
5, door-opening mechanism according to claim 1, it is characterized in that on the side of described connecting rod two limited impressions being arranged, on the centre position of two groove correspondences, be provided with one by support, spacer pin, fork-shaped push rod, the safeties that spring is formed, described support is fixed on the substrate, spacer pin can be arranged in the limited impression of connecting rod under spring action, also can break away from limited impression under the effect of fork-shaped push rod.
6, door-opening mechanism according to claim 1 is characterized in that the upper and lower end of the framework of described door all is equipped with door-opening mechanism, is equipped with door-hinge about the upper and lower corresponding position of the framework of described door.
7, according to claim 1,2,3,4,5 or 6 described door-opening mechanisms, it is characterized in that described door-hinge is fixed on the doorframe by a fixed head, the end of the following door-hinge of both sides respectively is provided with a steel ball or roller, steel ball or roller portion protrude in the end face of door-hinge, and contact with the bearing surface of door body lower end.