CN201730453U

CN201730453U - Door hinge

Info

Publication number: CN201730453U
Application number: CN2010202906018U
Authority: CN
Inventors: 胡利民
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-06
Filing date: 2010-08-06
Publication date: 2011-02-02
Anticipated expiration: 2020-08-06

Abstract

The utility model discloses a door hinge which is formed by a planar four-connecting bar mechanism and comprises a fixed hinge seat, a swing bar A, a movable hinge seat, a swing bar B and shaft pins, wherein a boost mechanism is arranged between one swing bar and the movable hinge seat in the planar four-connecting bar mechanism. In the door hinge, at least one shaft pin is riveted through hollow rivets. The utility model overcomes the defects in the prior art and improves the reliability and the service life of the boost mechanism for opening or closing the door.

Description

A kind of hinge

Technical field

A kind of hinge of the utility model relates to door of refrigerator hinge technical field, specially refers to refrigerator and is placed on the built-in refrigerator door hinge of using in the cabinet.

Background technology

Built-in refrigerator is to be placed on the electric equipment products of using in the cabinet, and is different with common cupboard door hinge, and the main feature of built-in refrigerator door hinge is also the door of refrigerator to be opened simultaneously opening cupboard door.At present, its hinge of the built-in refrigerator that domestic production is used to export mainly depends on import, but the problem that the part of these products exists is: the life-span of its shutter door servomechanism is low.

The utility model content

The purpose of this utility model is in order to solve the low problem of shutter door servomechanism life-span of flush door hinge.Construct a kind of hinge for this reason, can effectively improve the life-span of its servomechanism.Described door hinge comprises the lanar four rod mechanism of being made up of fixed hinge seat, fork A, hinges seat, fork B, and the shutter door servomechanism that between fork (fork A, fork B select one) and hinges seat, is provided with, in described door hinge, having a pivot pin at least is the tubular rivet riveted joint.

The door of described door hinge opens and closes servomechanism and is made up of spring support ring, spring, spring base, pressing rocking arm, wherein the spring support ring is connected on the fork A by pivot pin, spring base can slide along the spring support ring, spring is located between spring support ring and the spring base, the pressing rocking arm is fixed on the hinges seat, when the pressing rocking arm rotated with the hinges seat, the pressing rocking arm compressed spring by spring base.The bottom of spring base and sidepiece are respectively equipped with the buckle of projection, are provided with roller at the pressing rocking arm against an end of spring base, are provided with the curved surface adaptive with the roller profile phase in the end of spring base.Being provided with on the fork A, can make limited thrust groove of spring base and thrust breach when open angle during greater than set angle.When roller promotion spring base rotated in the fork A, the buckle on the spring base fell into to thrust groove and thrust breach.

Compared with prior art, servomechanism of the present utility model has the following advantages:

Existing technology generally adopts flat spring elasticity or air damping elastic mechanism, and these mechanisms are because of the flat spring easy fracture, and reasons such as air damping mechanism easy break-down cause its life-span low, and system is unreliable.The shutter door servomechanism reliable in structure of a kind of hinge of the utility model is durable, its spacing unhook design functional good, and spring stable working state, life-span are long.And in described door hinge, its pivot pin adopts the riveted joint mode of tubular rivet, and the standardization of design of part is good.

Description of drawings:

Fig. 1 is a kind of hinge of a utility model structural representation;

Fig. 2 is the structure cut-away view of a kind of hinge of the utility model at the state of closing the door;

Fig. 3 is the work partial schematic diagram of a kind of hinge of the utility model in door opening state;

Fig. 4 be a kind of hinge of the utility model servomechanism, and the pivot pin part split schematic diagram (the pressing rocking arm is not shown);

Fig. 5 is the fork A partial structurtes schematic diagram of a kind of hinge of the utility model.

The specific embodiment:

In the utility model, each label of Figure of description is represented respectively:

1 fixed hinge seat, 2 fork A, 3 fork B, 4 hinges seats

5 spring support rings, 6 springs, 7 spring bases, 8 pressing rocking arms

9 rollers, 10 spring base thrust grooves, 11 spring base thrust breach

12 support pivot pins, 13 rocking arm pivot pins (tubular rivet), 14 buckles, 15 support shaft pin-and-holes

X1 ° of door opening angle

Referring to Fig. 1～5, a kind of hinge of the utility model adopts plane four-bar linkage structure design, it is made up of members such as fixed hinge seat 1, fork A2, fork B3, hinges seat 4, flexible shutter door servomechanisms, see Fig. 1, in this quadric chain and shutter door servomechanism, and to have a hinge pivot pin at least be tubular rivet riveted joint mode.

A kind of hinge of the utility model is provided with flexible shutter door servomechanism between fork A and hinges seat 4, convenience, dexterity when realizing opening door.

Referring to Fig. 1～5, flexible shutter door servomechanism is arranged between fork A2 and the hinges seat 4, comprising: spring support ring 5, spring 6, spring base 7 and pressing rocking arm 8.End at pressing rocking arm 8 is provided with roller 9, and pressing rocking arm 8 usefulness pivot pins are riveted in the hole of two hinge points of hinges seat 4, and pivot pin 13 is the tubular rivet riveted joint.Wherein the hole of the hinge point of fork A2 and hinges seat 4 also is the hole of the pivot pin 13 of pressing rocking arm 8.

See Fig. 5, on fork A2, be provided with the pin hole 15 of spring support ring, spring support pin 12 is installed on the pin hole 15.Spring support ring 5 can rotate around spring support pin 12.In a segment distance of switch door process, roller 9 will contact with the outer end curved surface of spring base 7, and the outer face curve form of the outline of roller 9 and spring base 7 is suitable.See Fig. 4, spring base 7 is slidingly connected with spring support ring 5, in establish spring 6, under the pressure effect of the elastic force of spring 6 and roller 9, spring base 7 slides in spring support ring 5.See Fig. 3, Fig. 5, on the sidepiece of fork A2, be provided with spring base thrust groove 10, be provided with thrust breach 11 in the bottom of fork A2.The buckle 14 that is respectively equipped with protrusion in the side and the bottom surface of spring base 7, in the process of opening the door, spring support ring 5 is around 12 rotations of the spring support pivot pin on the fork A, drive spring 6 with spring base 7 rotations, when opening after X1 ° of door angle reach certain angle, the buckle 14 of spring base 7 sidepieces and bottom drops into respectively in thrust groove 10 and the thrust breach 11 under the effect of rocking arm 8 and roller 9.When rocking arm 8 continues when pivot pin 13 rotates counterclockwise, because of spring base 7 is subjected to the restriction of thrust groove 10 and thrust breach 11, pressing rocking arm 8 and spring base 7 are broken off relations, spring force no longer acts on the roller 9; the power-assisted effect of rocking arm 8 disappears, thereby forms intermittently assist function.After refrigerator doors was driven to the unhook state, the door body was in free movement state; Otherwise, in the process of closing the door, rocking arm 8 clockwise rotates around pivot pin 13, and roller 9 enters on the outer end curved surface of spring base 7 and goring push spring seat 7 rotates around spring support pivot pin 12, make buckle 14 leave thrust groove 10 and thrust breach 11, promote the door auto-closing thereby spring 6 discharges the elastic force energy.

Help the suction principle to be described in detail as follows:

The process of opening the door: open when reaching an opening angle X1 ° when door, the member direction of rotation that door opens and closes its each several part of servomechanism is: hinges seat 4 is

To, fork A2 be

To, pressing rocking arm 8 is

To; Around 12 rotations of the spring support pivot pin on the fork A2, rotation direction is under roller 9 thrust of pressing rocking arm 8 for spring support ring 5, spring 6, spring base 7

When roller 9 axle center went to the line of centres of spring support pivot pin 12 and pivot pin 13, it is maximum that the decrement of spring 6 reaches; When roller 9 axle center had turned over the line of centres of spring support pivot pin 12 and pivot pin 13, spring 6 began to discharge elastic energy, made roller 9 produce the tangential elasticity component that points to the direction of opening the door, and promotes pressing rocking arm 8 drive hinges seats 4 door is opened.After door continues to be opened to certain angle, buckle 14 on spring base 7 sidepieces and the bottom is under the effect of roller 9, drop in thrust groove 10 on the fork A, the thrust breach 11 around spring support pivot pin 12 rotation, roller 9 and spring base 7 are broken off relations, spring force no longer acts on the roller 9, thereby form intermittently assist function, realize that after door was driven to the unhook state, door can be in free movement state.

The process of closing the door: the door body that promotes to be in opening, dodge gate free bearing 4 is towards the direction rotation of closing the door, roller 9 enter on the outer end curved surface of spring base 7 and goring push spring seat 7 around 12 rotations of spring support pivot pin, make buckle 14 leave thrust groove 10 and thrust breach 11, when roller 9 axle center went to the line of centres of spring support pivot pin 12 and pivot pin 13, it is maximum that the decrement of spring 6 reaches; When roller 9 turned over the line of centres of spring support pivot pin 12 and pivot pin 13, spring 6 discharges elastic force made roller 9 produce the tangential elasticity component that points to the direction of closing the door, and spring 6 discharges elastic energies promotion pressing rocking arm 8 and drives hinges seats 4 with the door auto-closing.

A kind of hinge of the utility model is owing to adopted the elasticity shutter door servomechanism that is provided with between above-mentioned lanar four rod mechanism and fork and the hinges seat, the power-assisted flat spring easy fracture and the troublesome problem of air damping resistance mechanism that exist on the prior art have been overcome, the reliability and the life requirements that have solved the shutter door servomechanism.

Claims

1. a door hinge is made up of lanar four rod mechanism, comprise fixed hinge seat (1), fork A (2), hinges seat (4), fork B (3), pivot pin, it is characterized in that: be provided with servomechanism between fork in the described lanar four rod mechanism and the hinges seat (4).

2. a kind of hinge according to claim 1 is characterized in that: be provided with a switching servomechanism between described fork A (2) and the hinges seat (4).

3. a kind of hinge according to claim 2, it is characterized in that: described door opens and closes servomechanism and is made up of spring support ring (5), spring (6), spring base (7), pressing rocking arm (8), described spring support ring (5) is linked in the fork A (2), spring base (7) can slide along spring support ring (5), spring is located between spring support ring (5) and the spring base (7), pressing rocking arm (8) is fixed on the hinges seat (4), when pressing rocking arm (8) rotated with hinges seat (4), pressing rocking arm (8) can push described spring by spring base (7).

4. a kind of the hinge of stating according to claim 3, it is characterized in that: the buckle (14) that is provided with projection in the bottom of spring base (7), establish roller (9) at pressing rocking arm (8) against an end of spring base (7), be provided with and the adaptive curved surface of roller (9) profile phase in the end of spring base (7), can make spring base (7) at door angle of release degree limited thrust breach (11) when setting open angle being provided with on the fork A (2), when roller (9) promotion spring base (7) rotated in the fork A (2), the buckle (14) of spring base (7) screwed in the thrust breach (11).

5. a kind of the hinge of stating according to claim 3, it is characterized in that: the buckle (14) that is provided with projection at the sidepiece of spring base (7), establish roller (9) at pressing rocking arm (8) against an end of spring base (7), be provided with and the adaptive curved surface of roller (9) profile phase in the end of spring base (7), can make spring base (7) at door angle of release degree limited thrust groove (10) when setting open angle being provided with on the fork A (2), when roller (9) promotion spring base (7) rotated in the fork A (2), the buckle (14) of spring base (7) screwed in the thrust groove (10).

6. a kind of hinge according to claim 4, it is characterized in that: the buckle (14) that is provided with projection at the sidepiece of spring base (7), establish roller (9) at pressing rocking arm (8) against an end of spring base (7), be provided with and the adaptive curved surface of roller (9) profile phase in the end of spring base (7), can make spring base (7) at door angle of release degree limited thrust groove (10) when setting open angle being provided with on the fork A (2), when roller (9) promotion spring base (7) rotated in the fork A (2), the buckle (14) of spring base (7) screwed in the thrust groove (10).

7. a kind of hinge according to claim 1 and 2 is characterized in that: in the middle of the hinge point of lanar four rod mechanism and door opened and closed the pivot pin of servomechanism hinge point, having a pivot pin at least was tubular rivet.