CN111021855A

CN111021855A - Refrigerator and hinge door closing structure in refrigerator

Info

Publication number: CN111021855A
Application number: CN201911300982.5A
Authority: CN
Inventors: 刘治国
Original assignee: Hefei Snowky Electric Co Ltd
Current assignee: Hefei Snowky Electric Co Ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-04-17

Abstract

The invention provides a refrigerator middle hinge door closing structure and a refrigerator, wherein the refrigerator middle hinge door closing structure comprises a middle hinge base connected between an upper door body of the refrigerator and a refrigerator body of the refrigerator, the middle hinge base comprises a pin shaft used for being pivoted with the upper door body of the refrigerator, a convex surface and a concave surface which is adjacent to the convex surface and connected in an arc surface mode are arranged on the middle hinge base, a lock is arranged on the bottom surface of the upper door body of the refrigerator, the lock comprises a lock tongue which can slide along the convex surface and the concave surface and can be limited at the convex surface, and the center line of the lock tongue along the length direction is always positioned on the same straight line with the circle center of the pin shaft in. The invention effectively reduces the frictional resistance between the lock tongue and the middle hinge base and improves the use comfort.

Description

Refrigerator and hinge door closing structure in refrigerator

Technical Field

The invention belongs to the technical field of refrigerators, and particularly relates to a hinge door closing structure in a refrigerator and the refrigerator.

Background

Well hinge is as the rotation axis of refrigerator door, be responsible for the opening and the closure of refrigerator door body on the refrigerator box together with last hinge, well hinge door closing structure among the prior art, hinge base on the refrigerator box is fixed in including one side, the directional elastic component that is fixed in refrigerator door body bottom of hinge base one end, this directional end is equipped with the jack catch that can collude the elastic component, the elastic component breaks away from the jack catch when the refrigerator door body is opened, when the refrigerator door is closed, the elastic component pressurized adduction, get into the cavity of jack catch gradually, after the refrigerator door closes completely, the cavity of elastic component embedding jack catch completely, realize the inseparable closure of refrigerator door body and refrigerator box, wherein the elastic component adopts the working of plastics to make usually, the deformation force is limited, fragile, can't guarantee that it has longer elasticity resilience ability.

The publication No. CN109972948A, entitled "refrigerator door closer and refrigerator", discloses a refrigerator door closer, as shown in figure 1, which includes a hinge base 4 connected between a refrigerator door 1 and a bottom surface of a refrigerator body 3, the hinge base 4 includes a refrigerator door pivot area supporting part 41, a base connecting part 42 and a refrigerator body fixing mounting part 43 in sequence along a length direction, one end of the refrigerator door pivot area supporting part 41 along a width direction is provided with a pin 411 for pivotally connecting with the refrigerator door 1, the other end is provided with a guide limit part 412 in a convex state, referring to figure 2, the guide limit part 412 includes a limit point 413 located at the highest position of the middle protrusion, the bottom surface of the refrigerator door 1 is also provided with a lock 5 opposite to the guide limit part 422, the lock 5 includes a lock tongue 51 capable of sliding along the guide limit part 412, the guide limit part 412 between the limit point 413 and the base connecting part 42, the latch tongue 51 can be restricted from being continuously extended.

The lock replaces an elastic part, and the processes of closing and opening the door are finished at the position of a guided limit part (namely a jaw of a common door closing structure), so that the refrigerator door can be closed and opened stably, and the refrigerator door has the advantages of long service life of components, convenience in processing and low manufacturing cost; because this door closer can not drive the whole reduction of raising of refrigerator door body when the activity to do not constitute the influence to the refrigerator door body and the articulated door strip of sealing of inclining of refrigerator box, ensured the result of use and the life-span of door strip of sealing, and the refrigerator compactness when closing, effectively prevented to leak because of the refrigerator air conditioning that the door strip of sealing damages and lead to.

But the defects are mainly as follows: the frictional resistance between the lock tongue and the guide limiting part is large, friction sound is easy to occur in the door closing and opening processes, and a large improvement room still exists in the aspect of use comfort.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a hinge door closing structure in a refrigerator, which can effectively reduce the friction resistance between a lock tongue and a guide limiting part.

The invention also provides a refrigerator using the hinge door closing structure in the refrigerator.

The invention provides a middle hinge door closing structure of a refrigerator, which comprises a middle hinge base connected between an upper door body of the refrigerator and a refrigerator body, wherein the middle hinge base comprises a supporting part of a pivoting area of the upper door body of the refrigerator and a connecting and installing part of the refrigerator body vertical to the supporting part; the bottom surface of the refrigerator door body is provided with a lock facing to the guide limiting part, the lock can slide along the guide limiting part and can limit a spring bolt at the convex surface, the refrigerator door body rotates in the process, and the spring bolt is located on the same straight line along the center line of the length direction and the circle center of a pin shaft all the time.

The invention provides a refrigerator using the refrigerator internal hinge door closing structure, which comprises an upper refrigerator door body and a refrigerator body, wherein the upper refrigerator door body is provided with the refrigerator internal hinge door closing structure.

According to the invention, through improving the structure of the middle hinge base, replacing the elastic part with the lock and improving the mounting position between the lock tongue and the pin shaft of the middle hinge base, the frictional resistance between the lock tongue and the guide limiting part in the middle hinge base is effectively reduced, so that the occurrence of frictional sound is avoided during the door closing and opening processes of the upper door body of the refrigerator, the use comfort level is improved, the formed door closing structure not only ensures that the upper door body of the refrigerator can be closed and opened stably, but also has the advantages of long service life of components, convenience in processing and low manufacturing cost.

Drawings

Fig. 1 and 2 are schematic structural views of a hinged door closing structure in a refrigerator in the background art;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a schematic illustration of an explosive structure according to the present invention;

fig. 5 is a bottom view of the present invention.

Detailed Description

Referring to fig. 3, the present invention provides a door closing structure of a refrigerator hinge, including a middle hinge base 7 connected between an upper door body 6 of the refrigerator and a refrigerator body (not shown), where the middle hinge base 7 includes a supporting portion 71 of the upper door body of the refrigerator and a refrigerator body connecting and installing portion 72 perpendicular to the supporting portion, the supporting portion 71 of the upper door body of the refrigerator is provided with a pin 411 for pivotally connecting with the upper door body 6 of the refrigerator, in order to solve the technical problems described in the background art, in combination with fig. 4, a guiding and limiting portion 412 is provided at one side of the supporting portion 71 of the upper door body of the refrigerator, and includes a convex surface 721 and a concave surface 722 adjacent to the convex surface 721 and connected in an arc surface, a lock 5 facing the guiding and limiting portion 412 is provided at a bottom surface of the upper door body 6 of the refrigerator, the lock 5 includes a lock tongue 51 capable of sliding along the guiding and limiting at the convex surface 721, in combination with, in the rotating process of the upper door body 6 of the refrigerator, the central line of the bolt 51 along the length direction is always positioned on the same straight line with the center of the pin shaft 411.

The working principle is as follows: when the upper door body 6 of the refrigerator is opened, the bolt 51 crosses the convex surface 721 from the limiting state at the convex surface 721 under the action of manpower, and the bolt 51 is separated from the guide limiting part 412 along with the gradual opening of the upper door body 6 of the refrigerator, so that the opening of the upper door body 6 of the refrigerator is completed; when the refrigerator upper door body 6 is closed, the latch tongue 51 is pressed by the convex surface 721, and when the latch tongue crosses the maximum interference amount of the convex surface 721, the latch tongue 51 extends out beyond the space between the convex surface 721 and the concave surface 722, so that the refrigerator upper door body 6 is locked and closed; wherein, through the mounted position who injects tool to lock 5, at the switching in-process of door body 6 on the refrigerator, ensure that spring bolt 51 is located same straight line along length direction's central line and the centre of a circle of round pin axle 411 all the time, can realize the minimizing of pivot motion frictional resistance, the effectual frictional resistance that reduces between spring bolt 51 and the spacing portion 412 of guide, avoided the appearance of friction sound to have the advantage that use is light, the comfort level is high.

In this embodiment, referring to fig. 3, the middle hinge base 7 and the front side of the bottom wall of the upper door body 6 of the refrigerator form a limiting block installation groove 73, the front side of the bottom wall of the door body 1 of the refrigerator is provided with a limiting block 74 extending into the limiting block installation groove 73, the outer side wall of the middle hinge base 7 is adjacent to the hinged side of the bottom wall of the upper door body 6 of the refrigerator and is provided with a limiting boss 75, and the limiting block 74 can be limited on the limiting boss 75.

The working principle is as follows: when the upper door body 6 of the refrigerator is opened, the middle hinge base 7 rotates along with the upper door body 6 of the refrigerator, and when the limiting block 74 reaches the limiting boss 75, the limiting effect on the rotation of the upper door body 6 of the refrigerator can be achieved, the rotation of the upper door body 6 of the refrigerator is prevented from exceeding a preset angle range, and the middle hinge base is particularly suitable for an embedded refrigerator door body which can be opened only 90 degrees.

In this embodiment, referring to fig. 4, the lock 5 includes a lock tongue 51 and a lock seat 52, an elastic glue accommodating cavity 53 with an opening at one side is opened in the lock seat 52, an elastic glue 54 is arranged in the elastic glue accommodating cavity 53, and the tail end of the lock tongue 51 is connected to the front end of the elastic glue 54. Utilize elastic glue (for example TPU or TPE) to realize the flexible of spring bolt 51, have flexible steady, make and convenient assembling's advantage (the assembly of elastic glue does not need the pre-compaction volume, easily assembles, can produce huge elasticity after the small-size pressfitting moreover).

In this embodiment, the lock holder 52 is detachably mounted on the bottom surface of the upper door 6 of the refrigerator by bolts 55. The mounting position of the lock holder 52 is adjustable, is not affected by the size of the refrigerator, and is applicable to various types of refrigerators.

In this embodiment, the diapire of door body 6 is equipped with the spacing draw-in groove of tool to lock 8 on the refrigerator, and the spacing draw-in groove of tool to lock 8 meets with stopper mounting groove 73. Aim at, can further improve the stability of tool to lock 5 operation, reliably guarantee that spring bolt 51 is located same straight line with the centre of a circle of round pin axle 411 all the time along length direction's central line.

In this embodiment, the pin 411 is fixedly disposed in the shaft sleeve 9, and the bottom of the shaft sleeve 9 is fixedly connected to the middle hinge base 7. Aim at, not only can play the guard action to round pin axle 411, more importantly, utilize the assembly of axle sleeve 9, when opening and close door body 6 on the refrigerator, can enlarge the atress scope of articulated department rotation point, can not only effectively improve the smoothness of opening and closing, have the pleasing to the eye advantage of appearance moreover.

The invention also provides a refrigerator using the refrigerator internal hinge door closing structure, which comprises an upper refrigerator door body 6 provided with the refrigerator internal hinge door closing structure and a refrigerator body.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a hinge structure of closing in refrigerator, is including connecting the well hinge base between the door body and the refrigerator box on the refrigerator, well hinge base includes door body pivot district supporting part on the refrigerator to and rather than looks vertically refrigerator box connection installation department, be equipped with on the refrigerator on the door body pivot district supporting part be used for with the refrigerator on the door body pin joint round pin axle, its characterized in that: the bottom surface of the refrigerator door body is provided with a lock facing to the guide limiting part, the lock can slide along the guide limiting part and can limit a spring bolt at the convex surface, the refrigerator door body rotates in the process, and the spring bolt is located on the same straight line along the center line of the length direction and the circle center of a pin shaft all the time.

2. The structure of closing a door in a refrigerator according to claim 1, wherein: the middle hinge base and the front side of the bottom wall of the upper door body of the refrigerator form a limiting block mounting groove, the front side of the bottom wall of the upper door body of the refrigerator is provided with a limiting block stretching into the limiting block mounting groove, the outer side wall of the middle hinge base is close to the hinged side of the bottom wall of the upper door body of the refrigerator and is provided with a limiting boss, and the limiting block can be limited on the limiting boss.

3. The structure of closing a door in a refrigerator according to claim 1 or 2, wherein: the tool to lock includes spring bolt and lock seat, opens the elastic glue that is the open-ended state on one side in the lock seat and holds the chamber, and the elastic glue holds and is equipped with the elastic glue in the chamber, and the spring bolt tail end meets with the front end that this elastic glue.

4. The structure of closing a door in a refrigerator according to claim 3, wherein: the lock seat is detachably mounted on the bottom surface of the upper door body of the refrigerator through bolts.

5. The structure of closing a door in a refrigerator according to claim 1 or 2, wherein: the diapire of the refrigerator upper door body is provided with a lock limiting clamping groove, and the lock limiting clamping groove is connected with a limiting block mounting groove.

6. The structure of closing a door in a refrigerator according to claim 1 or 2, wherein: the pin shaft is fixedly arranged in the shaft sleeve, and the bottom of the shaft sleeve is fixedly connected to the middle hinge base.

7. A refrigerator using the hinge door closing structure in a refrigerator according to any one of claims 1 to 6, characterized in that: the refrigerator door comprises an upper refrigerator door body and a refrigerator body, wherein the upper refrigerator door body is provided with the refrigerator inner hinge door closing structure.