CN114645648A - Door hinge and refrigerator - Google Patents

Abstract

The invention provides a door body hinge which comprises a first hinge seat, a second hinge seat and a transmission assembly, wherein the first hinge seat is used for being installed on a refrigerator body, the second hinge seat is used for being installed on the refrigerator door body, and the transmission assembly is hinged between the first hinge seat and the second hinge seat. The invention can save the space of the door body hinge and improve the structural strength of the door body hinge.

Description

Door hinge and refrigerator

Technical Field

The invention relates to a door body hinge and a refrigerator, in particular to a door body hinge and a refrigerator which are space-saving and have better structural strength.

Background

In order to realize that the refrigerator door body can have good closing performance with the refrigerator body after being opened or closed, the existing refrigerator door body hinge usually adopts a six-link transmission mechanism. However, the existing refrigerator door hinge has the following disadvantages: on the one hand, the inside part of refrigerator door hinge is more, and the back is closed to the refrigerator door, and the inside part of hinge can't be folded completely together, and inside still has great space, and increase assembly volume leads to accumulations such as steam, dirt again easily. On the other hand, as most main structures are processed by sheet metal, certain parts in the door hinge of the refrigerator door body are weaker at certain positions, and the position is easy to deform and damage in the long-term opening and closing process of the door body, so that the closing performance of the door body is influenced.

In view of the above, there is a need for an improved door hinge and refrigerator to solve the above problems.

Disclosure of Invention

The invention aims to provide a door body hinge and a refrigerator, which save space and have better structural strength.

In order to achieve the purpose, the invention provides a door body hinge which comprises a first hinge seat, a second hinge seat and a transmission assembly, wherein the first hinge seat is used for being installed on a refrigerator body, the second hinge seat is used for being installed on the refrigerator door body, the transmission assembly is hinged between the first hinge seat and the second hinge seat, the transmission assembly comprises a transmission seat and a first transmission rod, the transmission seat and the first transmission rod are respectively hinged on the same side of the first hinge seat, and a second transmission rod and a third transmission rod are respectively hinged between the transmission seat and the second hinge seat, the second transmission rod and the third transmission rod are arranged in a non-crossed mode, the third transmission rod is closer to the position where the transmission seat is hinged with the first hinge seat relative to the second transmission rod, and the other end of the first transmission rod penetrates through the third transmission rod and is hinged to the second transmission rod.

As a further improvement of the present invention, the third transmission rod has a pair of fixed arms disposed oppositely and a connecting arm connecting the fixed arms, and a limit space for the first transmission rod to move is formed between the fixed arms.

As a further improvement of the invention, the door body hinge further comprises an elastic buffer device which is arranged on the transmission seat and is positioned between the second transmission rod and the third transmission rod, the elastic buffer device stretches under the action of the second transmission rod and/or the third transmission rod to form a damping force in the opening and closing process of the door body, and the transmission seat is provided with a guide groove for the elastic buffer device to stretch and move along a preset direction.

As a further improvement of the present invention, the elastic buffer device includes a first connecting portion and a second connecting portion fixed on the transmission seat, and an elastic member connected between the first connecting portion and the second connecting portion, the door hinge further includes a transmission member fixed with the third transmission rod to rotatably abut against the second connecting portion, and the second connecting portion is provided with a sliding structure matched with the guide groove.

As a further improvement of the invention, the transmission member has a fixing portion fixed to the third transmission rod, and a cam protruding from the fixing portion and rotatably abutting against the second connecting portion, and the fixing portion and the third transmission rod share a hinge shaft and are hinged between the transmission seat and the second hinge seat.

As a further improvement of the invention, the cam is provided with a limiting groove which is matched with the second connecting part when the door body hinge is closed.

As a further improvement of the invention, the transmission seat is provided with a pair of supporting arms arranged at intervals oppositely, a limiting arm connected with the pair of supporting arms, and the door body hinge further comprises a positioning hole penetrating through the pair of supporting arms and the third transmission rod along the vertical direction and a positioning pin matched with the positioning hole to lock the door body when the door body hinge is closed.

As a further improvement of the invention, the positioning hole penetrates through the transmission seat, the third transmission rod, the first transmission rod and the transmission piece along the vertical direction.

As a further improvement of the invention, the limiting arm is provided with a through hole for the cam to extend into in the rotation process of the door body hinge.

The invention also provides a refrigerator which comprises a refrigerator body, a door body and the door body hinge.

The invention has the beneficial effects that: according to the transmission assembly of the refrigerator, the second transmission rod and the third transmission rod are respectively hinged between the transmission seat and the second hinge seat, and the other end of the first transmission rod penetrates through the third transmission rod and is hinged to the second transmission rod, so that when the refrigerator door body is closed, the first transmission rod, the second transmission rod and the third transmission rod can be contained in the transmission seat, the space of the door body hinge is saved, the second transmission rod and the third transmission rod are hinged to the transmission seat with higher structural strength, and in the long-term opening and closing process of the refrigerator door body, the transmission seat is not easy to deform and damage, so that the service life of the door body hinge is prolonged, and the closing performance of the door body is improved.

Drawings

Fig. 1 is a perspective view schematically illustrating a refrigerator according to the present invention.

Fig. 2 is a perspective view of the door hinge of the present invention when closed.

Fig. 3 is a top exploded view of the door hinge of the present invention.

Fig. 4 is an exploded perspective view of fig. 2.

Fig. 5 is an exploded perspective view of fig. 4 from another perspective.

Fig. 6 is a perspective view illustrating the door hinge according to the present invention when opened.

Fig. 7 is an exploded perspective view of fig. 6.

Fig. 8 is a perspective view of fig. 6 from another perspective.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. The present invention is not limited to the embodiment, and structural, methodological, or functional changes made by one of ordinary skill in the art according to the embodiment are included in the scope of the present invention.

Fig. 1 to 8 show an embodiment of the door hinge according to the present invention, the door hinge includes a first hinge base 1 for being mounted on a cabinet 101 of a refrigerator 100, a second hinge base 2 for being mounted on a door 102 of the refrigerator 100, and a transmission assembly hinged between the first hinge base 1 and the second hinge base 2, wherein the transmission assembly includes a transmission base 3 and a first transmission rod 4 respectively hinged on the same side of the first hinge base 1, and a second transmission rod 5 and a third transmission rod 6 respectively hinged between the transmission base 3 and the second hinge base 2, the second transmission rod 5 and the third transmission rod 6 are arranged without crossing, the third transmission rod 6 is arranged closer to a position where the transmission base 3 is hinged to the first hinge base 1 than the second transmission rod 5, and the other end of the first transmission rod 4 is hinged to the second transmission rod 5 through the third transmission rod 6.

Specifically, as shown in fig. 1 to 5, in the present embodiment, the door hinge is applied between the cabinet 101 and the door 102 of the embedded refrigerator 100, and the mutual hinge is implemented by a hinge shaft. And when the door body hinge is completely opened, the second hinge seat 2 is located at the inner side of the first hinge seat 1 along the transverse direction, and the distance between the second hinge seat and the first hinge seat is approximately equal to the thickness of the door body 102, so that the door body 102 is prevented from impacting a wall. Of course, in other embodiments, the door hinge can be applied to a stand-alone refrigerator 100, or other storage devices having a refrigerator body and a door body pivotally connected to each other.

As shown in fig. 4 and 5, in the present embodiment, the first hinge base 1 has a first fixing portion 11 fixed to the box 101, and a pair of first extending portions 12 extending forward from upper and lower ends of the first fixing portion 11, the first extending portions 12 are substantially "L" shaped, and the transmission base 3 and the first transmission rod 4 are hinged to the first extending portions 12 near the end of the box 101. Therefore, when the door body 102 is opened or closed, the transmission seat 3 can be retracted between the first extending portions 12, so that the transmission seat 3 can be effectively limited from moving in the vertical direction, and the door body hinge can be prevented from being deformed and damaged.

The second hinge base 2 has a second fixing portion 21 fixed to the door body 102, and a pair of second hinge bases 22 extending rearward from upper and lower ends of the second fixing portion 21, and the second hinge bases 22 are used to hinge the second transmission rod 5 and the third transmission rod 6.

The transmission base 3 has a pair of supporting arms 31 disposed at an interval and a transmission base 32 connected to the pair of supporting arms 31, in this embodiment, the pair of supporting arms 31 are disposed at an interval and extend from the end of the transmission base 32 in the same direction. Of course, in other embodiments, the supporting arms 31 may also extend from the upper and lower ends of the transmission seat 32 in the front-back direction, i.e. the upper supporting arm 31 extends from the upper end of the transmission seat 32 in the front-back direction, and the lower supporting arm 31 also extends from the upper end of the transmission seat 32 in the front-back direction, so that the transmission seat 3 is substantially "i" shaped.

In this embodiment, transmission seat 3 has three articulated positions along self length direction, both ends are articulated first hinge seat 1 and second transfer line 5 respectively, the articulated third transfer line 6 of intermediate position, and the position of articulated first hinge seat 1 leans on the back more than the position of first hinge seat 1 of first transfer line 4 hinge, so, not only be convenient for the rotation of transmission seat 3 and first transfer line 4, but also conveniently accomodate first transfer line 4 at transmission seat 3 between a pair of support arm 31, save space, simultaneously, first transfer line 4 is acceptd in transmission seat 3, be equivalent to both overlaps and has increased whole inside thickness, strengthened the structure to difficult impaired.

The supporting arm 31 further has a guiding slot 33 penetrating in the up-down direction, in this embodiment, the guiding slot 33 is formed to extend along the extending direction of the supporting arm 31, and each supporting arm 31 has two guiding slots 33 arranged at intervals. Two of the guide grooves 33 are provided between the second transmission lever 5 and the third transmission lever 6.

First transfer line 4 is the arc setting, and first transfer line 4's basic structure with first hinge seat 1 and transmission seat 3 are all roughly the same, structure about connecting promptly through the intermediate construction. The first transmission rod 4 is almost completely retracted into the transmission seat 3, and when the door body hinge is opened, the position where the first transmission rod 4 is hinged with the second transmission rod 5 protrudes out of the transmission seat 3.

In this embodiment, the first driving rod 4 is hollow, that is, the intermediate structures of the first driving rod 4 are not completely connected, and other structures may be allowed to pass through. And when the door body hinge is opened, the first transmission rod 4 is also provided with a yielding groove 41, and the yielding groove 41 can be used for being matched with a hinge shaft hinged to the second hinge seat 2 by the third transmission rod 6 when the door body hinge is opened, so that the first transmission rod 4 moves smoothly.

The third driving rod 6 has a pair of fixing arms 61 opposite to each other and a connecting arm 62 connecting the pair of fixing arms 61, and a limiting space for the first driving rod 4 to move is formed between the pair of fixing arms 61. Said connecting arm 62 is connected to said pair of fixed arms 61, so as to facilitate the assembly of said third driving rod 6.

In this embodiment, the pair of fixing arms 61 are disposed at an interval from top to bottom, and the connecting arm 62 is disposed closer to the second hinge base 2 than the driving base 3, so as to facilitate the movement of the first driving rod 4. Of course, in other embodiments, the third driving rod 6 may have only one pair of fixing arms 61 arranged oppositely, and then be separately hinged to the driving seat 3 and the second hinge seat 6.

The door body hinge further comprises an elastic buffer device 7 which is arranged on the transmission seat 3 and located between the second transmission rod 5 and the third transmission rod 6, in the opening and closing process of the door body 102, the elastic buffer device 7 stretches under the action of the second transmission rod 5 and/or the third transmission rod 6 to form a damping force, and the elastic buffer device 7 can stretch and move along the guide groove 33 on the transmission seat 3.

In this embodiment, the elastic buffer device 7 includes a first connecting portion 71 and a second connecting portion 72 fixed on the transmission seat 3, and an elastic element 73 connected between the first connecting portion 71 and the second connecting portion 72, a sliding structure 721 matched with the guide groove 33 is disposed on the second connecting portion 72, the sliding structure 721 is a guide shaft, and the door hinge further includes a transmission element 8 fixed with the third transmission rod 6 to rotatably abut against the second connecting portion 72.

The transmission part 8 is provided with a fixing part 81 fixed with the third transmission rod 6 and a cam 82 protruding from the fixing part 81 and rotatably abutted against the second connecting part 72, the fixing part 81 and the third transmission rod 6 share the same hinge shaft and are hinged between the transmission seat 3 and the second hinge seat 2, and the cam 82 is further provided with a limiting groove 83 matched with the second connecting part 72 when the door body hinge is closed, so that when the door body hinge is closed, the limiting groove 83 can be matched with the second connecting part 72 to form a door closing force, and the sealing effect of the door body 102 and the refrigerator body 101 of the refrigerator 100 is improved.

In this embodiment, the transmission member 8 is inserted into the first transmission rod 4, and the third transmission rod 6 is hinged to the middle position of the transmission seat 3, and the first transmission rod 4 is clamped between the third transmission rod 6 and the transmission member 8, so that the structural strength of the first transmission rod 4 can be effectively improved.

As shown in fig. 6, the driving seat 32 of the driving seat 3 is further provided with a through hole 34 into which the cam 82 extends in the rotation process of the door hinge. The end of the transmission seat 32 located at the second transmission rod 5 has a stopping portion 35 bent to stop the first connecting portion 71 from being accidentally withdrawn.

When the door body hinge is opened, the cam 82 rotates to press against the second connecting part 72 so as to compress the elastic part 73 to form damping force, the opening hand feeling of the door body 102 is improved, and the door body 102 is prevented from being damaged due to sudden and instant opening to a limit position or impact on other objects.

Meanwhile, in the rotating process, the cam 82 can extend into the through hole 34 of the transmission seat 3, so that the width of the supporting arm 31 of the transmission seat 3 can be correspondingly narrowed, thereby not only reducing production materials and production cost, but also effectively reducing the whole space occupied by the door hinge by utilizing the space between the transmission seat 3 and the first hinge seat 1 when the door hinge is closed.

In this embodiment, in order to further increase the damping force, the first connecting portion 71 also has a sliding structure which is matched with the other guide groove 33, and the sliding structure is similar to the sliding structure 721 of the second connecting portion 72 and is also a guide shaft. The door body hinge further comprises another transmission member 8 fixed to the second transmission rod 5, and the transmission member 8 is only a cam, and when the door body hinge is opened or closed, the structure of the door body hinge can be similar to that of the transmission member 8. The first connecting portion 71 can also rotate along with the first transmission rod 4 to enable the elastic member 73 to stretch and retract, so that the first connecting portion 71 and the second connecting portion 72 can simultaneously act on the elastic member 73, a stronger damping force is provided, and the opening and closing hand feeling of the door body 102 is improved.

On one hand, the first connecting portion 71 and the second connecting portion 72 operate simultaneously, so that the damping force can be increased, if the original damping force is kept unchanged, the first connecting portion 71 and the second connecting portion 72 only need to move by half of the stroke respectively, in other words, the rotating angles of the second transmission rod 5 and the third transmission rod 6 which drive the first connecting portion 71 and the second connecting portion 72 to rotate can also be correspondingly reduced, for the embedded refrigerator 100, the distance between the first hinge seat 1 and the second hinge seat 2 can be increased due to the reduction of the rotating angle, so that the risk that the door body 102 collides with a wall is further reduced, the door body 102 can be thickened, the heat preservation effect of the door body 102 is enhanced, or the storage space of a bottle seat on the door body 102 is increased, and the like.

On the other hand, under the condition that the original damping force is kept unchanged and the displacement distance between the first connecting portion 71 and the second connecting portion 72 is also kept unchanged, the elastic member 73 with a smaller elastic coefficient can be selected, so that the production cost is reduced, and the maintenance and replacement cost is correspondingly reduced.

The door body hinge further comprises a positioning hole 36 which penetrates through the pair of supporting arms 31 and the third transmission rod 6 along the vertical direction, and a positioning pin 9 which is matched with the positioning hole 36 to lock the door body 102 when the door body hinge is closed. One end of the third transmission rod 6 is hinged to the transmission seat 3, so that the third transmission rod 6 can be prevented from rotating only by fixing the transmission seat 3 and the third transmission rod 6 a little, namely the door body hinge is locked.

In this embodiment, the hinge position of the third driving rod 6 and the driving seat 3 is closer to the driving seat 32, so that the positioning hole 36 can keep a certain distance from the hinge position, thereby improving the overall structural strength and avoiding damage to the driving seat 3 due to deformation caused by too close distance between the hole positions. In addition, the positioning hole 36 is vertically arranged to penetrate through the transmission seat 3, the third transmission rod 6, the first transmission rod 4 and the transmission member 8, so that when the door body 102 is to be opened, the positioning pin 9 is integrally blocked by the above components, and thus the locking effect is good and the above components are not easily deformed and damaged.

Locating hole 36 and locating pin 9 structure all have the refrigeration plant of a body 102 around can being used to, especially the refrigeration plant in the market, and this structure sets up in the door body 102 of rear side, the door body 102 of front side mainly used supplies the consumer to open the article of taking, the back side door body 102 mainly used supplies the staff to get in stock and uses, thereby, the staff only need take off locating pin 9 and open back side door body 102, arrange inside article forward, and put on the shelf new article can, therefore, the convenience is high, after putting on the shelf is accomplished, insert locating pin 9 in locating hole 36 again, can realize locking door body 102.

Of course, in other embodiments, the positioning hole 36 may be opened between the transmission seat 3 and the second transmission rod 5.

The operation process of the door body hinge is as follows: when the door body hinge is closed, the cams 82 on the second transmission rod 5 and the third transmission rod 6 have no acting force on the elastic buffer device 7, the second connecting part 72 is matched with the limiting groove 83 to form a door closing force, and the cams 82 are retracted in the transmission seat 3.

When the door body hinge is opened, the second hinge seat 2 drives the transmission seat 3, the first transmission rod 4 and the second transmission rod 5 to rotate anticlockwise and drives the third transmission rod 6 to rotate clockwise, so that the transmission seat 3, the first transmission rod 4, the second transmission rod 5 and the third transmission rod 6 are gradually opened.

The second transmission rod 5 and the third transmission rod 6 drive the first connection portion 71 and the second connection portion 72 to compress the spring through the transmission member 8 to form a damping force, and the cam 82 of the transmission member 8 fixed to the third transmission rod 6 protrudes from the through hole 34 of the transmission seat 3.

In summary, the second transmission rod 5 and the third transmission rod 6 are respectively hinged between the transmission seat 3 and the second hinge seat 2 by the transmission assembly of the refrigerator 100, and the other end of the first transmission rod 4 penetrates through the third transmission rod 6 to be hinged to the second transmission rod 5, so that when the door body 102 of the refrigerator 100 is closed, not only can the first transmission rod 4, the second transmission rod 5 and the third transmission rod 6 be accommodated in the transmission seat 3, and the hinge space of the door body is saved, but also the second transmission rod 5 and the third transmission rod 6 are hinged to the transmission seat 3 with higher structural strength, and in the long-term opening and closing process of the door body 102 of the refrigerator 100, the transmission seat 3 is not easy to deform and damage, so that the service life of the door body hinge is prolonged, and the closing performance of the door body 102 is further improved.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.

Claims (10)

1. The utility model provides a door body hinge, includes first hinge seat that is used for installing on the refrigerator box, is used for installing to the second hinge seat on the refrigerator door body, articulates the transmission components between first hinge seat and second hinge seat, its characterized in that: the transmission assembly comprises a transmission seat and a first transmission rod which are respectively hinged on the same side of the first hinge seat, and a second transmission rod and a third transmission rod which are respectively hinged between the transmission seat and the second hinge seat, the second transmission rod and the third transmission rod are arranged without crossing, the third transmission rod is arranged closer to the position where the transmission seat is hinged with the first hinge seat relative to the second transmission rod, and the other end of the first transmission rod penetrates through the third transmission rod to be hinged with the second transmission rod.

2. The door body hinge according to claim 1, wherein: the third transmission rod is provided with a pair of fixing arms and a connecting arm, the fixing arms are oppositely arranged, the connecting arm is connected with the fixing arms, and a limiting space for the first transmission rod to move is formed between the fixing arms.

3. The door body hinge according to claim 2, wherein: the door body hinge further comprises an elastic buffer device which is arranged on the transmission seat and located between the second transmission rod and the third transmission rod, the elastic buffer device stretches under the action of the second transmission rod and/or the third transmission rod to form damping force in the opening and closing process of the door body, and a guide groove for the elastic buffer device to stretch and move in the preset direction is formed in the transmission seat.

4. The door body hinge according to claim 3, wherein: the elastic buffer device comprises a first connecting part and a second connecting part which are fixed on the transmission seat, and an elastic piece connected between the first connecting part and the second connecting part, the door body hinge further comprises a transmission part which is fixed with the third transmission rod and is in rotary butt joint with the second connecting part, and a sliding structure matched with the guide groove is arranged on the second connecting part.

5. The door body hinge according to claim 4, wherein: the transmission part is provided with a fixing part fixed with the third transmission rod and a cam protruding from the fixing part and rotatably abutted against the second connecting part, and the fixing part and the third transmission rod share a hinge shaft and are hinged between the transmission seat and the second hinge seat.

6. The door body hinge according to claim 5, wherein: the cam is provided with a limiting groove matched with the second connecting part when the door body hinge is closed.

7. The door body hinge according to claim 5, wherein: the transmission seat is provided with a pair of supporting arms arranged at intervals oppositely and a limiting arm connected with the supporting arms, and the door body hinge further comprises a positioning hole penetrating through the supporting arms and the third transmission rod along the vertical direction and a positioning pin matched with the positioning hole to lock the door body when the door body hinge is closed.

8. The door body hinge according to claim 7, wherein: the positioning hole penetrates through the transmission seat, the third transmission rod, the first transmission rod and the transmission piece in the vertical direction.

9. The door body hinge according to claim 7, wherein: the limiting arm is provided with a through hole for the cam to extend into in the rotating process of the door body hinge.

10. The utility model provides a refrigerator, includes box and door body, its characterized in that: the refrigerator further comprises a door hinge according to any one of claims 1 to 9.

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