CN101135218A

CN101135218A - Automatic closing structure for reach-in refrigerator gate

Info

Publication number: CN101135218A
Application number: CNA200610150153XA
Authority: CN
Inventors: 任开龙; 王学利; 吴福民; 宋玲妍; 唐明; 梁静
Original assignee: Qingdao Haier Special Refrigerator Co Ltd; Haier Group Corp
Current assignee: Qingdao Haier Special Refrigerator Co Ltd; Haier Group Corp
Priority date: 2006-08-30
Filing date: 2006-10-30
Publication date: 2008-03-05
Anticipated expiration: 2026-10-30
Also published as: CN101135218B

Abstract

The automatic shut-off structure for large refrigerator door to be set in the upper and/or lower part of the door includes one connector and one hinge axis connected to the connector. The connector has one rectangular first support wall with one central through hole and one second support wall; and the hinge axis has one end passing through the central through hole and the other end socketed with one upper hinge and one spring before fixed through one spring end plug. The present invention has one cam with inclined surface and one spring set to one end of the cam, and when two slanted bosses move relatively, the cam will extrude the spring and the door with great weight is pulled back by the deformed spring to close.

Description

A kind of automatic closing structure of reach-in refrigerator door body

Technical field

The present invention relates to a kind of automatic closing structure, specifically be meant a kind of glass door automatic closing structure that is used for refrigerator-freezer, belong to the spare and accessory parts of a body.

Background technology

Electric refrigerator such as refrigerator or refrigerator the door body since user's carelessness in use can forget close the door or the door body close not in place, to cause the cold air in refrigerator or the refrigerator to leak outside, the power consumption of complete machine is risen, and even more serious is also will cause the interior food spoilage of case and degenerate.Its body of existing vertical freezer generally will be closed by manpower, operation effort like this, and a door body also can be not closed completely closely sometimes, makes loss of refrigeration capacity, has influenced freezing or cold storage effect.The vertical freezer that has adopts extension spring or torsion spring, by elastic force a body is closed, though it is laborsaving,, when Men Tikai is big, because of elastic force bigger, collision strength was bigger when the door body was closed, and a body was damaged, in addition, spring can produce plastic strain service time for a long time, and it is close also a body to be not closed completely.Though also have some to have the refrigerator of the function of closing the door automatically on the market now, but the door engine structure that is adopted is to be provided with in door hinge as torsional spring type, cam spring formula, degree of tightness belt, torsion spring lever and motor-driven, directly realize closing automatically of door body by the elastic force of spring, above-mentioned pass door all exists bigger shortcoming; As the lever-type complex structure of torsion spring of motor-driven, cam torsion spring type, cost of production height, problem such as installation dimension is big and application life is short; And the door hinge torsion spring type application life and and dependability aspect exist problem, also there is the inaesthetic shortcoming of outward appearance in the degree of tightness belt except that above-mentioned shortcoming.Referring to following documents:

Documents 1, the patent No. is to disclose a kind of body in 00256001 the Chinese patent literature to close vertical freezer automatically, as scheme shown in the l, this pass door system comprise a body 1 ' on, following hinge 3 ', 5 ', described hinge 5 ' is down formed by being fixed on the hinge axis 5 ' on the refrigerator box body 7 ' and being fixed on hinge shaft sleeve a 3 ' suit of body bottom, hinge shaft sleeve circle around openings below the hinge shaft sleeve 3 ' base is provided with cyclic convex edge, on cyclic convex edge, have a notch at least, notch has a vertical plane and an inclined-plane, is provided with when the door body is closed the projection that is meshed with notch below the hinge shaft sleeve base above the hinge axis 5 ' base.Be equipped with hold-down screw 4 ' hole on hinge shaft sleeve 3 ' base and the hinge axis 5 ' base, refrigerator box body 7 ' front one side fixedly mounts a bracing frame 6, and forward position, door body 1 ' bottom is located near hinge shaft sleeve 3 ', be provided with one with a parallel thrust block 2 ' in body 1 ' front.It is simple in structure, and is easy to operate, and a door body closes steadily, reliable, tightly, and cost is low, long service life.Pass through foregoing description, what adopt in this structure as can be seen is the unlatching of the relative displacement realization door body of two inclined-plane boss, the location, close, such structure is suitable for the walk-in box refrigerator door, door body volume is little, weight is little, it is convenient to open, the angular range of closing automatically is also smaller between 50 degree are spent to 70, but, there is a serious defective in this documents, in the process of door body rotation, during two inclined-plane boss relative displacements, following hinge has the displacement difference of a boss height in the upper hinge axis hole, when two boss inclined-planes coincide, upper hinge was positioned at minimum position; When the platform of two boss coincide, upper hinge was positioned at the highest position, and for the refrigerator door of reach-in refrigerator, such upper and lower displacement is difficulty very, will certainly strengthen the difficulty of opening the door, so this structure is not suitable in the large-scale freezer door body.

Documents 2; the patent No. is to disclose a kind of refrigerator doors door engine in 94212990 the Chinese patent literature; it comprises the inductive switch of close the door halt switch and control thereof; free bearing is connected on refrigeratory body and the refrigerator doors; be connected with magnetic sealing strip between refrigeratory body and the refrigerator doors; magnetic pole in the magnetic control hinge that combines as a whole with refrigerator doors can rotate around the electromagnetic pole center, and inductive switch is arranged in the refrigerator case.The utility model modern design, simple in structure, cheap, easy to use, after the people leaves the refrigerator certain distance, can make refrigerator doors realize closing automatically, do not influence door of refrigerator and hand switch during outage.Disclosed in this documents is exactly a kind of automatically controlled inductive switch, just different from principle with mechanical type automatic closing structure of the present invention, just few here contrast.

Documents 3, the patent No. is to disclose a kind of refrigerator in 01255858.3 the Chinese patent literature, be specifically related to the refrigerator that a kind of energy relies on the deadweight of door body to close the door automatically, shown in Fig. 2 a, comprise a body and door body hinge, also comprise respectively last push jack 2 with door body lower end and door body hinge Joint " and following push jack 3 ", on, following push jack is provided with the through hole 4 that matches with hinge axis "; on; be respectively equipped with the engaging structure that can produce relative displacement on the adjacent surface of following push jack; engaging structure is on described; following push jack 2 "; 3 " adjacent position is respectively equipped with by platform and inclined-plane 22 "; 32 " the semicircle boss 21 that constitutes "; 33 ", on, the inclined-plane 22 of following push jack "; 32 " coincide mutually; Shown in Fig. 2 b, another kind of engaging structure is at last push jack 2 " bottom is provided with two double wedges 61 symmetrical with through-bore axis ", 62 ", double wedge 61 ", 62 " two sides take the form of inclined plane, at push jack 3 down " the top be provided with the groove 63 that is meshed with double wedge ".The refrigerator of closing the door automatically that is provided by the utility model does not need spring, there is not additional transmission device, adopt simple mechanical structure, simple in structure, cost is low, and employed power is little when opening the door, long service life, the reliability height can be widely used in single, double, multi-door refrigerator and the refrigerator, is a kind of functional performance refrigerator of better closing the door automatically.The structure of this documents and documents 1 is similar, and this structure is big for the volume of reach-in refrigerator, weight gate body, also has same defective.

By above-mentioned documents as can be seen, people do not adopt the traction of closing the door of extension spring or torsion spring usually in the prior art, but simple employing mechanical force realizes the switch of door body, but, what the present invention relates to is a kind of large-scale refrigerator, and door body volume is big, and it is harder that people carry out the on-off ratio of a body by simple mechanical force in use, the technology of the present invention personnel develop a automatic pass door system that is suitable for large-scale freezer door body finally through continuous experimental study.

Summary of the invention

The object of the present invention is to provide the reach-in refrigerator door body automatic closing structure that a kind of mounting structure is simple, unlatching door body is laborsaving, realization is closed automatically.

Another goal of the invention of the present invention is to provide a kind of body automatic closing structure, and the door physical efficiency with this structure is implemented in secondary location in the process of unlatching or three location etc.

For achieving the above object, the technical solution used in the present invention is as follows:

A kind of automatic closing structure of reach-in refrigerator door body, described door body automatic closing structure comprises a connection piece 1, hinge axis 3, described hinge axis 3 links to each other with connector 1, described door body automatic closing structure is arranged on the top and/or the below of a body 10, described connector 1 has a rectangular configuration, the center has first supporting walls 11 of through hole 13, one flat structure has a side flanging, with first supporting walls, 11 orthogonal second supporting walls 12, in described through hole 13, be provided with hinge axis 3, one end of described hinge axis 3 passes through hole 13, the other end of described hinge axis 3 is socket upper hinge 4 successively, spring 5, the end at spring 5 passes through end cap of the spring 6 positioning and fixing at last.

The automatic closing structure of described reach-in refrigerator door body, described connector 1 are " L " type connector 1; In described first supporting walls 11, the bottom periphery of hinge axis 3 further is arranged with a nylon sleeve 2, is provided with stopper slot 14 in described first supporting walls 11.

The automatic closing structure of described reach-in refrigerator door body fixedly installs on the described hinge axis 3 or one-body molded a following hinge 31 that matches with upper hinge 4 is arranged, and described upper hinge 4 has platform and inclined-plane with following hinge 31 matching surfaces.

The automatic closing structure of described reach-in refrigerator door body, described hinge axis 3 also comprises: one be positioned at following hinge 31 bottoms, have the screw socket 32 of many faceted pebbles, one stretches out the drive-connecting shaft 33 of first supporting walls, 11 through holes 13, and described screw socket 32 and drive-connecting shaft 33 are one-body molded on hinge axis 3.

The automatic closing structure of described reach-in refrigerator door body, described upper hinge 4 comprise a ramp 41, one with upper mounting plate face 42, that the inclined-plane smoothly joins be arranged on that the stopper slot 14 with in first supporting walls 11 on the upper hinge wall matches spacing protruding 43, one be arranged on upper mounting plate face 42 opposite faces on circular protrusions 44, the internal diameter coupling of the diameter of described circular protrusions 44 and spring 5, like this, can prevent down that hinge 31 drives upper hinge 4 and rotates together in the process of rotation, play the effect of fixed limit.

The automatic closing structure of described reach-in refrigerator door body, arc transition between described ramp 41 and the upper mounting plate face 42, its angle of inclination is greater than 90 degree.Described down hinge 31 comprises a lower inclined plane 311, one and the lower platform face 312 that smoothly joins of inclined-plane.The automatic closing structure of described reach-in refrigerator door body, arc transition between described lower inclined plane 311 and the lower platform face 312, its angle of inclination is greater than 90 degree.

As another kind of embodiment, the automatic closing structure of this reach-in refrigerator door body is provided with one or more locating hole 45 on described ramp 41 and/or upper mounting plate face 42, is provided with a location protruding 313 at the top of described lower inclined plane 311.

The automatic closing structure of described reach-in refrigerator door body is provided with one or more locating hole 45 on any one side of described ramp 41.

The automatic closing structure of described reach-in refrigerator door body, described end cap of the spring 6 is provided with a roundlet annular lug 61 with the bottom that spring 5 socket-connects, the diameter of this annular projection 61 and spring 5 internal diameters are complementary, and the end face of this end cap of the spring 6 offers and connects and fixes groove 62.

The automatic closing structure of described reach-in refrigerator door body further, below described freezer door body, is provided with the limited block 16 that limits door body opening angle with being provided with a casing of body automatic closing structure 15, and described limited block 16 is " L " type structure.

Use beneficial effect of the present invention: biggest advantage of the present invention is exactly the prejudice that overcomes prior art, at an end with cam of inclination curved surface one spring is set among the present invention, when two inclination curved surface boss generation relative displacements, with the fixing cam of the spring extrusion spring that makes progress, because reach-in refrigerator door body volume is big, weight is big, according to the weight of himself, make spring generation elastic deformation, and displacement up and down can not take place in the door body; When at closing time,, the door body rebounded realize closing automatically according to the restoring force of spring.The present invention can be when opening the door body a laborsaving body automatic closing function of realizing again; Integral body of the present invention is hidden in a body inside, does not influence the overall appearance of a body; The present invention can realize a body closing automatically in opening 90 degree scopes, can be static to the 120 degree scopes at 90 degree in its position, and make things convenient for the user to take out article.

Description of drawings

Figure l is the perspective view of documents 1 in the prior art;

Fig. 2 a is an embodiment perspective view of documents 3 in the prior art;

Fig. 2 b is another embodiment perspective view of documents 3 in the prior art;

Fig. 3 closes the perspective exploded view of door system automatically for the present invention;

Fig. 4 is the automatic pass door system perspective exploded view of Fig. 3 schematic diagram rotation 90;

Fig. 5 is the present invention's system core component-assembled plane structure schematic diagram together of closing the door automatically;

Fig. 6 closes door system automatically for the present invention and is installed in structural representation on the body;

Structural representation when Fig. 7 a closes the spring original position for the door body;

Structural representation when Fig. 7 b turn 90 degrees for Fig. 7 a revolves;

Fig. 8 is installed in structural representation on the cabinet for the present invention;

Fig. 9 closes another example structure schematic diagram of door system automatically for the present invention;

Structural representation when Figure 10 a closes the spring original position among Fig. 9 embodiment body;

Figure 10 b is the structural representation that revolves when turning 90 degrees for Figure 10 a;

The specific embodiment

Below by specific embodiment accompanying drawing in addition, the present invention is described in detail.

As Fig. 3, Fig. 4, shown in Figure 5, a kind of automatic closing structure of reach-in refrigerator door body, described door body automatic closing structure comprises a connection piece 1, hinge axis 3, described hinge axis 3 links to each other with connector 1, described door body automatic closing structure is arranged on the top and/or the below of a body 10, described connector 1 has a rectangular configuration, the center has first supporting walls 11 of through hole 13, one flat structure has a side flanging, with first supporting walls, 11 orthogonal second supporting walls 12, in described through hole 13, be provided with hinge axis 3, one end of described hinge axis 3 passes through hole 13, the other end of described hinge axis 3 is socket upper hinge 4 successively, spring 5, the end at spring 5 passes through end cap of the spring 6 positioning and fixing at last.Described connector 1 is " L " type connector 1; In described first supporting walls 11, the bottom periphery of hinge axis 3 further is arranged with a nylon sleeve 2 that increases scuff resistance, is provided with stopper slot 14 in described first supporting walls 11.Fixedly install on the described hinge axis 3 or one-body molded a following hinge 31 that matches with upper hinge 4 arranged, described upper hinge 4 has platform and inclined-plane with following hinge 31 matching surfaces.Described hinge axis 3 also comprises: the screw socket 32, that be positioned at following hinge 31 bottoms, has many faceted pebbles stretches out the drive-connecting shaft 33 of first supporting walls, 11 through holes 13, and described screw socket 32 and drive-connecting shaft 33 are one-body molded on hinge axis 3.

As Fig. 4, shown in Figure 5, described upper hinge 4 comprise a ramp 41, one with upper mounting plate face 42, that the inclined-plane smoothly joins be arranged on that the stopper slot 14 with in first supporting walls 11 on the upper hinge wall matches spacing protruding 43, one be arranged on upper mounting plate face 42 opposite faces on circular protrusions 44, the internal diameter coupling of the diameter of described circular protrusions 44 and spring 5, like this, can prevent down that hinge 31 drives upper hinge 4 and rotates together in the process of rotation, play the effect of fixed limit.Arc transition between described ramp 41 and the upper mounting plate face 42, its angle of inclination is between the 0-90 degree.Described down hinge 31 comprises a lower inclined plane 311, one and the lower platform face 312 that smoothly joins of inclined-plane.Arc transition between described lower inclined plane 311 and the lower platform face 312, its angle of inclination is between the 0-90 degree.Described end cap of the spring 6 is provided with a roundlet annular lug 61 with the bottom that spring 5 socket-connects, and the diameter of this annular projection 61 and spring 5 internal diameters are complementary, and the end face of this end cap of the spring 6 offers and connects and fixes groove 62.

As Fig. 6, shown in Figure 8, the automatic closing structure of described reach-in refrigerator door body, further, below described freezer door body, be provided with the limited block 16 that limits door body opening angle with being provided with a casing of body automatic closing structure 15, described limited block 16 is " L " type structure.

Shown in Fig. 7 a, Fig. 7 b, express closing structure of the present invention in opening the door, closing the door process, realize closing the door automatically by the deadweight of door body, the pressured spring force that contracts between upper hinge, the following hinge, setting by spring 5, reserve one section space in first supporting walls 11, door body extrusion spring in the process of rotation prevents a body upper and lower displacement like this.

The another kind of embodiment of door body automatic closing structure of the present invention, just be implemented in the secondary location in the Men Tiguan closed procedure, the purpose of three location, shown in Fig. 9, Figure 10 a, Figure 10 b, on the middle part of ramp 41 and upper mounting plate face 42, respectively be provided with a locating hole 45, be provided with location at the top of lower inclined plane 311 protruding 313, and the door body in this schematic structure just can realize that secondary locatees.In addition, embodiments of the present invention are not only limited to the secondary location, are provided with one or more locating hole 45 on described ramp 41 and/or upper mounting plate face 42, simultaneously, are provided with a location protruding 313 at the top of described lower inclined plane 311.Explanation is around here: locate the perforate degree of depth that protruding 313 height is higher than locating hole 45 a little, and the degree of depth of locating hole is less, below 8mm, also can not surpass 10mm and locate protruding height usually.

The present invention is realizing that repeatedly the detailed process of location is as follows: at first, open the door body, following hinge 31 is around upper hinge 4 rotations, lower inclined plane 311 is along ramp 41 rotations, when rotating to certain position, locate protruding 313 and fall into the one-time positioning that locating hole 45 is realized the door body, if a this moment door body is opened when not enough, the user only needs a little firmly one to lift, then, locating protruding 313 lays out from locating hole 45, following hinge 31 continues to rotate up along the ramp 41 of upper hinge 4, if this moment, the door body was opened not enough, a locating hole 45 (schematic structure omission) is set again, then, locate protruding 313 and fall into locating hole 45, realize the location second time of door body, if also need further to open the door body this moment, the user only need continue the revolving door body, locatees protruding 313 and lays out from locating hole 45 once more, and following hinge 31 continues to rotate up along the ramp 41 of upper hinge 4, at last, fall into the locating hole of upper mounting plate face 42 up to location protruding 313, realize just locating for the last time for the third time, and this moment, a door body also was to be opened to maximum angle.

The repeatedly locating effect that proposes among the present invention is tangible, when the user gets the smallclothes object, for the cold that reduces in the casing runs off, when the door body need not be opened to maximum angle and needs to locate again simultaneously, existing door body structure all can not be realized this requirement, because, all can only be opened to maximum angle in the existing door body location structure and realize the location, researcher of the present invention improves on the basis of the existing this pass door system that can not realize intermediate regulations location, developing a kind of novel realization door body has the pass door system of grade On/Off, so-called around here have level to be meant one or more locating hole 45 is set on ramp 41, fall into locating hole 45 by the location protruding 313 that is arranged on lower inclined plane 311 tops, realize grade On/Off that has of a body.What any was described around here again is: in the process that the door body is closed, that locatees whether protruding and locating hole can influence a body closes effect automatically, because automatic closing structure of the present invention mainly is applicable to the Men Tizhong of reach-in refrigerator, because himself the weight of door body of reach-in refrigerator is bigger, when the door body is closed, only need to give Men Tiyi reciprocal power, locating protruding 313 skids off from locating hole 45, perhaps lower inclined plane 311 slips away from upper mounting plate face 42, because under the deadweight of door body and the effect of spring, lower inclined plane 311 glides successively along ramp 41, because the protruding height in location is higher than the degree of depth of locating hole a little, and the height of locating hole, the degree of depth of locating hole is less, make the door body at self gravitation like this, the restoring force of spring and being applied at closing time under the effect of a plurality of power such as thrust on the body is located protruding meeting and is slipped over the minimum point that locating hole directly slides into lower inclined plane 41 down, at this moment, upper mounting plate face 42 and lower platform face 312 levels are realized closing automatically of door body.

What explain around here is: location protruding 313 is set at the top of lower inclined plane 311, can be further a locating hole be set for the protruding location that is installed with, location in the least significant end of ramp 41, and not being set, locating hole can not influence closing of a body yet, because, end at upper hinge 4 links to each other with spring, under the situation that locating hole is not set, locating protruding is to pass through upper hinge compression slightly with lower spring, and can not cause any impact by the opposite house body.

In addition, utilize explanation of the present invention and embodiment, can derive the similar techniques scheme, in every case be the content that does not break away from technical solution of the present invention,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.

Claims

1. the automatic closing structure of a reach-in refrigerator door body, described door body automatic closing structure comprises a connection piece (1), hinge axis (3), described hinge axis (3) links to each other with connector (1), described door body automatic closing structure is arranged on the top and/or the below of a body (10), it is characterized in that: described connector (1) has a rectangular configuration, the center has first supporting walls (11) of through hole (13), one flat structure has a side flanging, with orthogonal second supporting walls of first supporting walls (11) (12), in described through hole (13), be provided with hinge axis (3), one end of described hinge axis (3) passes through hole (13), the other end of described hinge axis (3) is socket upper hinge (4) successively, spring (5), the end at spring (5) passes through end cap of the spring (6) positioning and fixing at last.

2. the automatic closing structure of reach-in refrigerator door body according to claim 1 is characterized in that: described connector (1) is " L " type connector (1); In described first supporting walls (11), the bottom periphery of hinge axis (3) further is arranged with a nylon sleeve (2), is provided with stopper slot (14) in described first supporting walls (11).

3. the automatic closing structure of reach-in refrigerator door body according to claim 1 and 2, it is characterized in that: fixedly install on the described hinge axis (3) or one-body molded a following hinge (31) that matches with upper hinge (4) arranged, described upper hinge (4) has platform and inclined-plane with following hinge (31) matching surface.

4. the automatic closing structure of reach-in refrigerator door body according to claim 3, it is characterized in that: described hinge axis (3) also comprises: one be positioned at following hinge (31) bottom, have the screw socket (32) of many faceted pebbles, one stretches out the drive-connecting shaft (33) of first supporting walls (11) through hole (13), and described screw socket (32) and drive-connecting shaft (33) are one-body molded on hinge axis (3).

5. the automatic closing structure of reach-in refrigerator door body according to claim 3, it is characterized in that: described upper hinge (4) comprises a ramp (41), the one upper mounting plate face (42) that smoothly joins with the inclined-plane, one is arranged on spacing protruding (43) that the stopper slot (14) with in first supporting walls (11) on the upper hinge wall matches, one be arranged on upper mounting plate face (42) opposite face on circular protrusions (44), the internal diameter coupling of the diameter of described circular protrusions (44) and spring (5), like this, can prevent down that hinge (31) drives upper hinge (4) and rotates together in the process of rotation, play the effect of fixed limit.

6. the automatic closing structure of reach-in refrigerator door body according to claim 5 is characterized in that: arc transition between described ramp (41) and the upper mounting plate face (42), and its angle of inclination is greater than 90 degree; Described down hinge (31) comprises a lower inclined plane (311), one and the lower platform face (312) that smoothly joins of inclined-plane; Arc transition between described lower inclined plane (311) and the lower platform face (312), its angle of inclination is being spent greater than 90.

7. the automatic closing structure of reach-in refrigerator door body according to claim 6, it is characterized in that: on described ramp (41) and/or upper mounting plate face (42), be provided with one or more locating hole (45), be provided with a location protruding (313) at the top of described lower inclined plane (311).

8. the automatic closing structure of reach-in refrigerator door body according to claim 7 is characterized in that: be provided with one or more locating hole (45) on any one side of described ramp (41).

9. the automatic closing structure of reach-in refrigerator door body according to claim 1, it is characterized in that: described end cap of the spring (6) is provided with a roundlet annular lug (61) with the bottom that spring (5) socket-connects, the diameter of this annular projection (61) and spring (5) internal diameter are complementary, and the end face of this end cap of the spring (6) offers and connects and fixes groove (62).

10. the automatic closing structure of reach-in refrigerator door body according to claim 1, it is characterized in that: further, below described freezer door body, be provided with the limited block (16) that limits door body opening angle with being provided with a casing of body automatic closing structure (15), described limited block (16) is " L " type structure.