WO2019206093A1

WO2019206093A1 - Door closer and refrigerator comprising same

Info

Publication number: WO2019206093A1
Application number: PCT/CN2019/083724
Authority: WO
Inventors: 何文华; 王宁; 蒋孝奎; 朱兆云
Original assignee: 青岛海尔股份有限公司
Priority date: 2018-04-24
Filing date: 2019-04-22
Publication date: 2019-10-31
Also published as: AU2019258466A1; CN109695391A; EP3786400A1; EP3786400A4; MX2020011113A

Abstract

A door closer (200), comprising a hinge plate (21), a hinge shaft (22) disposed on the hinge plate (21), and an adapter (23) rotatably provided around the hinge shaft (22), and further comprising a cam (24) disposed on the hinge shaft (22). A first recessed area (241) is formed by shrinking at one side of the periphery of the cam (24) towards an interior direction thereof. The adapter (23) is provided with an elastic mechanism. The elastic mechanism comprises an abutting end abutted against the periphery of the cam (24). In the rotation process of the adapter (23), the abutting end moves relative to the periphery of the cam (24), and when the adapter (23) is rotated to one side of the first recessed area (241), the abutting end enters the first recessed area (241) to lock the position relation between the adapter (23) and the hinge plate (21).

Description

Door closer and refrigerator having the same

The present application claims priority to Chinese Patent Application No. 201810374364.4, the entire disclosure of which is hereby incorporated by reference. In this application.

Technical field

The present invention relates to the field of household appliances, and in particular to a door closer and a refrigerator having the same.

Background technique

Referring to Figures 1 and 2, there is shown a hinge assembly structure in a prior art design, the hinge assembly including a hinge plate 11 and an adapter 12 rotatably coupled to the hinge plate 11. The hinge plate 11 is fixed on the box body of the refrigerator, and the door body of the refrigerator is fixed on the adapter member 12, thereby realizing the pivotal connection between the box body and the door body. In the prior art, the adapter 12 is generally formed with a hook-shaped stop 120. The hinge plate 11 is formed with a protrusion 110 corresponding to the stop 120. Referring to FIG. 2, based on the above structure After the door of the refrigerator is closed, the hook of the stop 120 can hook the boss 110 to maintain the closed state of the door. However, this technical means of keeping the door closed is as follows:

The stop 120 of the prior art needs to be deformed during the closing of the door to hook on the raised portion 110 of the hinge plate 11. If the size of the hook of the stop 120 is too small, after the door body is closed, there may be a situation in which the engagement between the stop 120 and the boss 110 is not tight, thereby causing the door to be closed tightly; and if the size of the hook of the stop 120 is small If the door body is closed, the stop 120 is required to have a large deformation, and the stopper 120 may be seriously worn or even directly broken during use of the refrigerator.

In view of the above, it is necessary to provide a door closer and a refrigerator having the same to solve the above problems.

Summary of the invention

The present invention is directed to at least one of the technical problems existing in the prior art. To achieve the above object, the present invention provides a door closer which is specifically designed as follows.

A door closer includes a hinge plate, a hinge shaft disposed on the hinge plate, and an adapter disposed rotatably around the hinge shaft, the door closer further comprising a cam disposed on the hinge shaft, The peripheral side of the cam is contracted toward the inner direction of the cam to form a first recessed area, and the adaptor is provided with an elastic mechanism, and the elastic mechanism has an abutting end elastically abutting to the periphery of the cam; During the rotation of the adapter, the abutting end moves relative to the periphery of the cam, and when the adapter turns to the side of the first recessed area of the cam, the abutting end enters the first a recessed area to lock the positional relationship between the adapter and the hinge plate.

Further, the adapter is a casing, and the casing includes a top plate and a bottom plate disposed opposite to each other, and a seating cavity for arranging the elastic mechanism is formed between the top plate and the bottom plate, and the top plate is The bottom plate extends toward the hinge axis to form a top plate extending portion and a bottom plate extending portion respectively on the upper and lower sides of the cam, and the top plate extending portion and the bottom plate extending portion are both provided for the transfer a rotating hole that rotates around the hinge axis.

Further, the elastic mechanism includes a spring and an elastic release portion, the spring is disposed in the positioning cavity in a radial direction of the hinge shaft, and an end thereof away from the hinge shaft is fixed relative to the housing Providing; the elastic releasing portion is located between the spring and the cam to apply an elastic force of the spring to the periphery of the cam, and the abutting end is formed at one end of the elastic releasing portion near the hinge shaft .

Further, the elastic release portion includes a bracket and a roller, the bracket is abutted against the spring, and the bracket is formed on a side of the spring with a bracket tail extending to the inside of the spring, the roller Rotating is disposed at an end of the bracket away from the spring and constitutes the abutting end, and the axis of rotation of the roller is parallel to the axis line of rotation of the adapter.

Further, the top plate and the bottom plate are formed with elongated guiding holes along a radial direction of the hinge shaft, and the two ends of the roller respectively extend into the guiding holes to define the roller along the hinge A guide fitting portion that moves in the radial direction of the shaft.

Further, the upper and lower sides of the cam are respectively provided with an upper bushing and a lower bushing sleeved outside the hinge shaft, and the top plate extending portion and the bottom plate extending portion are respectively matched by the rotating holes The bushing and the lower bushing are described.

Further, a side of the periphery of the cam opposite to the first recessed area is further recessed to form a second recessed area, and when the adapter is turned to the side of the second recessed area of the cam, the The terminal enters the second recessed area to lock the positional relationship between the adapter and the hinge plate.

Further, between the first recessed area and the second recessed area, a surface of the periphery of the cam that moves at the abutting end is further recessed to form at least one third recessed area, when the adapter is turned When the position of the third recessed portion of the cam is reached, the abutting end enters the third recessed area to lock the positional relationship between the adapter and the hinge plate.

Further, the hinge shaft includes a first shaft body and a second shaft body, the first shaft body is fixed to the hinge plate and an inner portion thereof is formed with an assembly hole in a height direction, and the second shaft body is a rod The lower end is non-rotatably fitted in the fitting hole.

Further, the mounting hole is vertically penetrated, and the mounting hole is screwed into a screw with a height adjustable, and the lower end of the second shaft abuts against the top of the screw.

The present invention also provides a refrigerator including a cabinet having a accommodating compartment and a door body covering the accommodating compartment, the refrigerator further including the door closer described above, the closed door The hinge plate of the device is fixed to the box body, the door body is fixed to the adapter, and when the door body is closed, the adapter is turned to the first of the cam One side of the recessed area to keep the door body closed.

The invention has the beneficial effects that: according to the door closer structure provided by the invention, in the application scenario that the door body is closed, the door closer can ensure that the door body is tightly closed without damaging the components, and can satisfy the user's long-term. Reliable use requirements.

DRAWINGS

Figure 1 is a plan view showing the hinge assembly when the door body is opened in the prior design;

Figure 2 is a perspective view showing the hinge assembly when the door body is closed in the prior design;

Figure 3 is a schematic view showing the overall structure of the door closer of the present invention;

Figure 4 is a schematic exploded view of the door closer shown in Figure 3;

Figure 5 is a schematic view showing the separation of the elastic mechanism;

Figure 6 is a schematic view showing the cutoff at the position A-A' in Figure 3;

Figure 7 is a schematic view showing the rotation of the adapter;

Figure 8 is a schematic view of the cam, the upper bushing, the lower bushing and the second shaft body before mating;

Figure 9 is a schematic view showing the structure of the cam of Figure 8 fitted to the second shaft body;

Figure 10 is a schematic view showing the cutoff at the position B-B' in Figure 3;

Figure 11 is a schematic view showing the door closer of the present invention before being engaged with the door body;

Figure 12 is an enlarged schematic view of a portion c in Figure 11;

Figure 13 is a partial schematic view of the door closer and the door body.

detailed description

The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings. FIG. 3 to FIG. 13 are preferred embodiments of the present invention.

As shown in FIG. 11, FIG. 12 and FIG. 13, the refrigerator according to the present invention includes a casing (not shown) having a compartment, a door body 3 covering the accommodation compartment, and a connection box and The door closer 200 of the door body 3, as shown in the figure, is fixed to the case body by the hinge plate 21 of the door closer 200, and the door body 3 is fixed to the adapter member 23. Specifically, in the embodiment, the bottom side of the door body 3 is recessed upwardly to form a recess 30, and the adapter 23 is embedded and fixed in the recess 30 to realize the connection between the door body 3 and the door closer 200; the door closer 200 The fixing portion 210 is fixed to the box body through the fixing portion 210 on the hinge plate 21. In the embodiment, the fixing portion 210 is provided with a fixing hole (not shown), and the screw passes through the through hole to fix the hinge plate 21 to the refrigerator. On the box. The door closer 200 according to the present invention will be further described below.

Referring to FIGS. 1 and 2, the door closer 200 according to the present invention includes a hinge plate 21, a hinge shaft 22 provided on the hinge plate 21, and an adapter 23 rotatably disposed about the hinge shaft 22.

Specifically, in the embodiment, the hinge shaft 22 includes a first shaft body 221 and a second shaft body 222. The first shaft body 221 is fixed on the hinge plate 21 and has an assembly hole 2210 formed in the height direction thereof. As shown, the second shaft body 222 is rod-shaped and the lower end is non-rotatably fitted in the fitting hole 2210 of the second shaft body 222. In other embodiments of the present invention, the hinge shaft 22 may be integrally formed, or more shaft bodies may be spliced, and specifically, no expansion is performed here.

The door closer 200 of the present invention further includes a cam 24 disposed on the hinge shaft 22. Specifically, in the embodiment, the cam 24 is formed with an assembly hole 240 (not shown), and the second shaft 222 passes through The fitting hole 240 forms a fixing to the cam 24. Referring to FIG. 4, the peripheral side of the cam 24 is contracted toward the inner direction of the cam 24 to form a first recessed area 241; the adapter member 23 is provided with an elastic mechanism, and the elastic mechanism has an abutting end elastically abutting to the periphery of the cam 24; During the rotation of the adapter 23, the abutting end of the elastic mechanism moves relative to the periphery of the cam 24, and when the adapter 23 is turned to the side of the first recessed portion 241 of the cam 24, the abutting end enters the first recess. The positional relationship between the lock adapter 23 and the hinge plate 21 is defined in the area 241. Corresponding to the refrigerator, when the door body 3 is closed, the adapter 23 just rotates to the side of the first recessed area 241 of the cam 24, so that the door body 3 can be kept in the closed state.

In a specific implementation process, the first recessed area 241 is gradually contracted from the periphery of the cam 24 toward the inner direction of the cam to form an indented arc surface. When the door body 3 is closed, when the abutting end of the elastic mechanism is close to the first recessed area 241 At the edge, under the elastic force of the elastic mechanism, the abutting end can move toward the inside of the first recessed area 241, thereby achieving complete closing of the door body 3. In order to ensure that the door body 3 forms a tight cover to the box body, the present embodiment also has the following optimized arrangement: Referring to FIG. 7, when the door body 3 is completely closed, the abutting end of the elastic mechanism protrudes into the first In the recessed area 241, at this time, in the direction in which the door body 3 is closed, the first recessed area 241 has a recessed space which continues to extend toward the inside of the cam 24. Thus, after the door body 3 is completely closed, the elastic mechanism can also provide the door body 3 with a force that urges it to continue to rotate in the closing direction of the door body 3, thereby ensuring that the door body 3 is closed tightly.

In the present embodiment, in order to ensure smoothness during the opening process of the door body 3, a side surface which is in contact with the abutting end during the opening process of the door body 3 is a circular arc surface. As shown in FIG. 6 and FIG. 7, due to the arrangement of the circular arc surface, during the opening of the door body 3, the spring 235 serves as an elastic force providing member of the elastic mechanism, and there is no compression or expansion process, so that the adapter member 23 is opposite. The hinge shaft 22 is smoothly rotated, that is, the opening process of the door body 3 can be ensured smoothly.

In the specific implementation of the present invention, as shown in FIG. 3, FIG. 4, and FIG. 5, the adapter 23 is a casing, and the casing includes a top plate 231 and a bottom plate 232 disposed opposite each other, and between the top plate 231 and the bottom plate 232. A mounting cavity 230 is disposed, and a top plate 231 and a bottom plate 232 are formed in the direction of the hinge axis 22, and a top plate extending portion 2310 and a bottom plate extending portion 2320 respectively on the upper and lower sides of the cam 24, a top plate extending portion 2310 and a bottom plate are formed. The extending portions 2320 are each provided with a rotating hole 234 for the adapter member 23 to rotate about the hinge shaft 22.

Further, as shown in FIG. 5 and FIG. 6, the elastic mechanism includes a spring 235 and an elastic release portion. The spring 235 is pressed in the radial direction of the hinge shaft 222 and disposed in the positioning cavity 230, and the end of the spring away from the hinge shaft 222 is opposite to the shell. Body fixed settings. Specifically, in this embodiment, a baffle 233 is disposed at one end of the housing away from the top plate extending portion 2310 and the bottom plate extending portion 2320. The one end of the spring 235 away from the hinge shaft 222 is abutted and fixed to the baffle 233 side.

The elastic releasing portion in the present invention is located between the spring 235 and the cam 24 to apply the elastic force of the spring 235 to the periphery of the cam 24, and the end of the elastic releasing portion close to the hinge shaft 222 constitutes the abutting end described above.

Specifically, in the embodiment, the elastic release portion includes a bracket 236 and a roller 237. As shown in FIG. 5 and FIG. 6, the bracket 236 is abutted against the spring 235, and the bracket 236 is formed on the side of the spring 235 with a bracket tail 2360 extending to the inside of the spring 235. The bracket tail 2360 ensures that the bracket 236 does not leave the spring 235. The roller 237 is rotatably disposed at one end of the bracket 236 away from the spring 235. In this embodiment, the roller 237 constitutes the abutting end described above.

In the specific implementation process, the roller 237 is internally formed with a rolling shaft 2371 for rotating, and a side of the bracket 236 away from the spring 235 is vertically formed with a pair of supporting pieces (not shown), and a pair of supporting pieces are formed and rolled. The shaft 2371 is fitted with a receiving groove 2361. The rolling shaft 2371 is fitted into the receiving groove 2361 to abut against the periphery of the cam 24 under the elastic force of the spring 235. In this embodiment, the axis of the rotation of the roller 237 is parallel to the transfer. The axis of rotation of the piece 23 is rotated. When the roller 237 moves along the periphery of the cam 24, the roller 237 is rolled to reduce the frictional force when the abutment end slides against the circumferential surface of the cam 24, which facilitates the rotation of the refrigerator door.

As a preferred embodiment of the present invention, as shown in FIG. 4 and FIG. 5, the top plate 231 and the bottom plate 232 are formed with elongated guide holes 238 along the radial direction of the hinge shaft 22, and the upper and lower ends of the rolling shaft 2371 of the roller 237 are respectively The guide holes 238 extend into the top plate 231 and the bottom plate 232; the upper and lower ends of the rolling shaft 2371 in this embodiment constitute a guide fitting portion that defines the movement of the roller 237 in the radial direction of the hinge shaft 22.

As shown in FIG. 8 , FIG. 9 and FIG. 10 , in the embodiment, the upper and lower sides of the cam 24 are respectively provided with an upper bushing 251 and a lower bushing 252 which are sleeved outside the hinge shaft 22 , and the top plate extending portion 2310 and The bottom plate extending portion 2320 is fitted to the outside of the upper bushing 251 and the lower bushing 252 through the rotating holes 234, respectively.

Specifically, the upper bushing 251, the cam 24, and the lower bushing 252 are sleeved outside the second shaft body 222 from top to bottom. The cam 24 in the present invention is non-rotatable with respect to the second shaft body 222. Based on this, the fitting hole 240 in the middle of the cam 24 is disposed in a non-circular shape, and the second shaft body 222 is provided with a cam fitting portion that coincides with the fitting hole 240. 2220; the upper and lower sides of the mounting portion 2220 are provided with an upper bushing fitting portion 2221 and a lower bushing fitting portion 2222 for assembling the upper bushing 251 and the lower bushing 252, wherein the lower bushing fitting portion 2222 has a protruding portion A projection (not shown) on the surface of the fitting portion 2220 can prevent the cam 24 from moving downward along the second shaft 222.

The upper bushing 251 and the lower bushing 252 are both rotatably disposed relative to the second shaft body 222, and the top plate extending portion 2310 and the bottom plate extending portion 2320 are fixedly disposed with respect to the upper bushing 251 and the lower bushing 252, respectively. In the specific implementation, the rotating hole 234 is formed as a non-circular shaped hole, and the upper bushing 251 and the lower bushing 252 are respectively formed with an upper rotating hole engaging portion 2510 and a lower rotating hole engaging portion 2520 that cooperate with the rotating hole 234. Thereby, the rotation of the adapter 23 relative to the upper bushing 251 and the lower bushing 252 is prevented.

Of course, in other embodiments of the present invention, the upper bushing 251 and the lower bushing 252 are also disposed to be non-rotatable relative to the second shaft body 222, and the through hole 234 on the top plate extending portion 2310 and the bottom plate extending portion 2320 is circular. A hole, thereby achieving a rotational setting of the adapter 23 relative to the hinge shaft 22.

As shown in FIG. 6 and FIG. 7 , as a preferred embodiment of the present invention, a side of the periphery of the cam 24 opposite to the first recessed portion 241 is further recessed to form a second recessed portion 242 when the adapter 23 is turned to the cam. When the second recessed area 242 is on one side, the abutting end (ie, the roller 237) enters the second recessed area 242 to lock the positional relationship between the adapter 23 and the hinge plate 21. Corresponding to the opening process of the door body 3 of the refrigerator, when the door body 3 is opened to a certain angle, for example, 180° is opened, the roller 237 enters the second recessed area 242 to position the door body 3 at a certain opening angle, so that the user When the inside of the refrigerator is taken and placed, the door body 3 does not rotate at will.

In order to suspend the door body 3 at different opening angles, for example, 45°, 90°, etc., the surface of the cam 24 that is rolled around the roller 237 is further recessed to form at least one third recessed area (not shown). The three recessed area is located between the first recessed area and the second recessed area. When the adapter 23 is turned to the third recessed position of the cam 24, the roller 237 enters the third recessed area to lock the adapter 23 The positional relationship with the hinge plate 21; in a specific implementation, as a preferred embodiment, the recessed depth of the third recessed area is smaller than the recessed depth of the first recessed area 241 and the second recessed area 242, so that the door body 3 is hovered After that, the user can re-rotate the door body 3 with a little force.

As shown in FIG. 4, FIG. 9, and FIG. 10, the mounting hole 2210 of the first shaft body 221 is a non-circular hole, and the lower end 2223 of the second shaft body 222 is matched with the non-circular hole to avoid the first shaft body. 221. The second shaft body 222 is relatively rotated. As a preferred embodiment of the present invention, the mounting hole 2210 is vertically penetrated, and the mounting hole 2210 is internally screwed with a height-adjustable screw 26, and the lower end of the second shaft 222 abuts against the top of the screw 26. Based on the setting manner, if the door body 3 is drooped during use of the refrigerator, the door body 3 can be indirectly adjusted by rotating the screw 26 upward to raise the height position of the second screw 222 and the rotating member 23. the height of.

It should be understood that, although the description is described in terms of embodiments, the embodiments are not intended to be construed as a single. The technical solutions in the embodiments may also be combined as appropriate to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions set forth above are merely illustrative of the possible embodiments of the present invention, and are not intended to limit the scope of the present invention. Changes are intended to be included within the scope of the invention.

Claims

A door closer includes a hinge plate, a hinge shaft disposed on the hinge plate, and an adapter disposed to rotate around the hinge shaft, wherein the door closer further comprises a hinge shaft disposed on the hinge shaft The upper cam, the peripheral side of the cam is contracted toward the inner direction of the cam to form a first recessed area, and the adaptor is provided with an elastic mechanism, and the elastic mechanism has an elastic abutment to the abutment of the cam periphery The abutting end moves relative to the periphery of the cam during the rotation of the adapter, and when the adapter is turned to the side of the first recessed portion of the cam, the abutting end Entering the first recessed area to lock the positional relationship between the adapter and the hinge plate.
The door closer according to claim 1, wherein the adapter is a casing, and the casing comprises a top plate and a bottom plate disposed opposite to each other, and the top plate and the bottom plate are disposed to be disposed. a positioning cavity of the elastic mechanism, and the top plate and the bottom plate extend toward the hinge axis to form a top plate extending portion and a bottom plate extending portion respectively on the upper and lower sides of the cam, and the top plate extending portion is The bottom plate extensions are each provided with a rotation hole for the adapter to rotate around the hinge axis.
The door closer according to claim 2, wherein the elastic mechanism comprises a spring and an elastic release portion, and the spring is pressed in the radial direction of the hinge shaft to be disposed in the seating cavity, and An end away from the hinge shaft is fixedly disposed with respect to the housing; the elastic release portion is located between the spring and the cam to apply an elastic force of the spring to the periphery of the cam, and the abutting end is formed The elastic release portion is adjacent to one end of the hinge shaft.
The door closer according to claim 3, wherein the elastic releasing portion comprises a bracket and a roller, the bracket is abutted against the spring, and the bracket is formed with an extension on one side of the spring. To the tail of the bracket inside the spring, the roller is rotatably disposed at an end of the bracket away from the spring and constitutes the abutting end, and the axis of rotation of the roller is parallel to the adapter The axis of the rotation.
The door closer according to claim 4, wherein the top plate and the bottom plate are formed with elongated guide holes along a radial direction of the hinge shaft, and the two ends of the roller respectively extend to the A guide fitting portion is defined in the guide hole to define the roller to move in a radial direction of the hinge axis.
The door closer according to claim 2, wherein the upper and lower sides of the cam are respectively provided with an upper bushing and a lower bushing sleeved outside the hinge shaft, and the top plate extending portion and the bottom plate The bottom plate extensions are respectively fitted outside the upper bushing and the lower bushing through the rotating holes.
The door closer according to claim 1, wherein a side of the periphery of the cam opposite to the first recessed portion is further recessed to form a second recessed portion, when the adapter is turned to the When the second recessed area of the cam is on one side, the abutting end enters the second recessed area to lock the positional relationship between the adapter and the hinge plate.
The door closer according to claim 7, wherein between the first recessed area and the second recessed area, a surface of the periphery of the cam that moves at the abutting end is further recessed to form at least a third recessed area, when the adapter is turned to the third recessed position of the cam, the abutting end enters the third recessed area to lock the adapter and the hinge plate The positional relationship.
The door closer according to claim 1, wherein the hinge shaft comprises a first shaft body and a second shaft body, wherein the first shaft body is fixed to the hinge plate and the inside thereof is in a height direction A fitting hole is formed, and the second shaft body is rod-shaped and the lower end is non-rotatably fitted in the fitting hole.
The door closer according to claim 1, wherein the fitting hole is vertically penetrated, and the fitting hole is internally screwed with a screw of adjustable height, and a lower end of the second shaft abuts against the screw the top of.
A refrigerator comprising a casing having a accommodating compartment and a door body covering the accommodating compartment, wherein the refrigerator further comprises the door closer according to claim 1, the door closer The hinge plate is fixed to the box body, the door body is fixed to the adapter, and when the door body is closed, the adapter is turned to the first recess of the cam One side of the zone is to keep the door body closed.