CN220815323U - Power assisting mechanism and refrigerator - Google Patents

Abstract

The utility model discloses a power assisting mechanism and a refrigerator, and relates to the technical field of refrigeration equipment, wherein the power assisting mechanism comprises: the push rod, the booster rod and the handle are arranged on the door body in a sliding manner; the power-assisted rod is rotationally connected to the door body through a second rotating shaft, the second rotating shaft divides the power-assisted rod into a first rod part and a second rod part, the distance from the free end of the first rod part to the second rotating shaft is larger than the distance from the free end of the second rod part to the second rotating shaft, and the second rod part is used for pushing the ejector rod to move towards the box body; the handle is connected with the first rod part; the first rod portion includes a first connection section and a second connection section. The force applied by the handle of the power-assisted rod is transmitted to the ejector rod, the ejector rod stretches out by utilizing the principle of the lever, the power-assisted door opening function is achieved, and when the handle is pulled by a user, the door can be opened by applying small force to the handle. The first connecting section is arranged at the rear side of the second rod part, so that the handle can be prevented from extending out of the outer surface of the door body, and the function of preventing the clamping hand is realized.

Description

Power assisting mechanism and refrigerator

Technical Field

The utility model relates to the technical field of storage equipment, in particular to a power assisting mechanism and a refrigerator.

Background

In the related art, storage devices (such as cabinets, wardrobes, refrigerators and the like) have a case body and a door body, and a connection structure such as a magnet is arranged between the case body and the door body, so that the case body and the door are kept closed, for example, the magnet is arranged on the door body and is adsorbed to the case body through the magnetic force of the magnet, thereby keeping the door body in contact with the case body, and further keeping the door body closed. However, the connecting structure simultaneously causes the door opening to be unchanged, and the related technology adopts a lever power-assisted mechanism to extend the ejector rod to prop against the box body, so that the power-assisted door opening is realized. However, because the lever connected with the handle is longer, when the door is opened, the handle easily extends out of the outer surface of the door body, and when a user releases hands, the hands are positioned between the handle and the door body, so that the problem of clamping the hands is easy to occur.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a power assisting mechanism which adopts a lever mechanism to assist in opening a door and can reduce the occurrence of the problem of clamping hands.

The utility model further provides a refrigerator with the power assisting mechanism.

According to an embodiment of the first aspect of the present utility model, an assist mechanism for a storage apparatus having a case and a door, the assist mechanism includes: the ejector rod is arranged on the door body in a sliding manner and is used for abutting against the box body; the power-assisted rod is rotationally connected to the door body through a second rotating shaft, the second rotating shaft divides the power-assisted rod into a first rod part and a second rod part, the distance from the free end of the first rod part to the second rotating shaft is larger than the distance from the free end of the second rod part to the second rotating shaft, and the second rod part is used for pushing the ejector rod to move towards the box body; the handle is connected with the first rod part; the first rod part comprises a first connecting section and a second connecting section, two ends of the second connecting section are respectively connected with the first connecting section and the second rod part, the first connecting section is positioned on one side, close to the box body, of the second rod part, and the handle is mounted on the first connecting section.

The power assisting mechanism provided by the embodiment of the utility model has at least the following beneficial effects: the force applied by the handle of the power-assisted rod is transmitted to the ejector rod, the ejector rod stretches out by utilizing the principle of the lever, the power-assisted door opening function is achieved, the stroke of the handle is large enough, and a user can apply smaller force to the handle when pulling the handle, so that the power-assisted door opening can be achieved. And, through setting up the first linkage segment in the rear side of second pole portion, can also prevent that the handle from stretching out the door body surface to realize preventing the function of tong.

According to some embodiments of the utility model, the booster mechanism further comprises a retainer, the retainer is provided with an operation groove, the handle is located in the operation groove, a limiting groove is formed in one side, away from the ejector rod, of the retainer, the limiting groove is communicated with the operation groove, and part of the handle is located in the limiting groove to limit the handle in the vertical direction.

According to some embodiments of the utility model, the booster mechanism further comprises a retainer, the retainer is provided with an operation groove, the handle is located in the operation groove, a limiting opening is formed in one side, close to the ejector rod, of the retainer, the limiting opening is communicated with the operation groove, the first rod portion penetrates through the limiting opening, and the front side wall and the rear side wall of the limiting opening limit the rotation angle of the booster rod.

According to some embodiments of the utility model, the handle includes an auxiliary portion located in the limit opening, and the auxiliary portion and the first lever portion are disposed in an up-down direction.

According to some embodiments of the utility model, the booster mechanism further comprises a first return spring, one end of the first return spring is connected with the booster rod, and the other end of the first return spring is used for being connected with the door body.

According to some embodiments of the utility model, the booster mechanism further comprises a fixed block, the fixed block is fixedly connected to the door body, a guide hole is formed in the fixed block, the guide hole penetrates through the fixed block, and the ejector rod penetrates through the guide hole.

According to some embodiments of the utility model, the fixing block is provided with an avoidance notch, the avoidance notch is located at one side of the fixing block, which is close to the second rod portion, the avoidance notch is communicated with the guide hole, and at least part of the second rod portion is located in the avoidance notch.

According to some embodiments of the utility model, the booster mechanism further comprises a second return spring, one end of the second return spring is connected with the ejector rod, and the other end of the second return spring is connected with the fixed block.

According to some embodiments of the utility model, the first rod portion includes a first connecting section and a second connecting section, two ends of the second connecting section are respectively connected with the first connecting section and the second rod portion, the first connecting section is located at the rear side of the second rod portion, and the handle is mounted on the first connecting section.

A refrigerator according to an embodiment of a second aspect of the present utility model includes a case, a door mounted to the case, and an assist mechanism of the embodiment of the first aspect of the present utility model; the power assisting mechanism is arranged on the door body.

The refrigerator provided by the embodiment of the utility model has at least the following beneficial effects: by adopting the power assisting mechanism of the embodiment of the first aspect of the utility model, the force applied by the handle of the power assisting rod is transmitted to the ejector rod, the ejector rod stretches out by utilizing the principle of the lever, the power assisting door opening function is achieved, and the user can apply smaller force to the handle when pulling the handle because the stroke of the handle is enough. And, adopt the holder to carry out spacingly to at least one of the direction and the rotation angle about the handle, can promote the smooth degree of handle operation or noise reduction.

According to some embodiments of the utility model, the booster mechanism is located at the bottom of the door body.

According to some embodiments of the utility model, the 4 corners of the door body are all connected to the box body through hinges, the hinges allow either one of the left side and the right side of the door body to be engaged with and disengaged from the box body, the hinges comprise a fixed part, a first rotating shaft and a movable part, the fixed part and the first rotating shaft are connected to the box body, the movable part is connected to the door body, the movable part is provided with a sliding groove, the fixed part is provided with a through hole, the first rotating shaft penetrates through the through hole and can slide along the sliding groove, the opening of the sliding groove faces the box body, the sliding groove comprises a first sliding section and a second sliding section, the first rotating shaft is located on the first sliding section, when the door body is closed, the first rotating shaft on two sides is kept at the position of the first sliding section and the second sliding section, when the door body is opened on one side and the other side of the door body is closed, the first rotating shaft enables the other side of the door body to rotate around the other side, and the sliding section is limited.

According to some embodiments of the utility model, the fixing member is provided with a first arc-shaped boss, the movable member is provided with a second arc-shaped boss, and the first arc-shaped boss is arranged on the periphery of the second arc-shaped boss, so that the first arc-shaped boss can guide the second arc-shaped boss to rotate.

According to some embodiments of the utility model, the fixed member is provided with a sliding guide block, and the movable member is provided with a sliding press block, and the sliding press block is used for sliding fit with the left side or the right side of the sliding guide block, and enables the first rotating shaft to be kept at the position of the first sliding section or the second sliding section.

According to some embodiments of the utility model, the ejector rod is capable of abutting the sliding guide block.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic view of a refrigerator according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the hinge shown in FIG. 1;

FIG. 3 is a cross-sectional view in the direction C-C shown in FIG. 2;

FIG. 4 is a schematic view of the hinge shown in FIG. 3 on the open side;

FIG. 5 is a schematic view of the hinge shown in FIG. 3 in a closed side;

FIG. 6 is a schematic view of the engagement of the assist mechanism with the mount;

FIG. 7 is a schematic view of the assist mechanism of FIG. 6 in a reset state;

FIG. 8 is a schematic view of the assist mechanism shown in FIG. 6 in a stretched state;

FIG. 9 is an exploded view of the assist mechanism shown in FIG. 6;

FIG. 10 is a perspective view of the assist mechanism shown in FIG. 6;

FIG. 11 is a schematic view of one orientation of the anchor block shown in FIG. 9;

FIG. 12 is another schematic view of the anchor block of FIG. 9;

FIG. 13 is a schematic view of a power assist mechanism of another embodiment;

FIG. 14 is a schematic view of the cage shown in FIG. 13;

FIG. 15 is a schematic view of a state in which the assist mechanism is engaged with the hinge;

FIG. 16 is a schematic view of an alternative state of the power assist mechanism mated with the hinge;

FIG. 17 is a schematic view of an alternative state of the power assist mechanism mated with the hinge;

fig. 18 is a partial schematic view of a refrigerator in a door-closed state according to an embodiment of the present utility model.

Reference numerals:

101. a door body;

201. A hinge; 202. a fixing member; 203. a movable member; 204. a roller assembly; 205. a guide part; 206. a first ramp section; 207. a second ramp section; 208. a concave portion;

301. A first rotating shaft; 302. a first arcuate boss; 303. a second arcuate boss; 304. a sliding groove; 305. sliding the guide block; 306. a sliding pressing block;

401. a first sliding section; 402. a second sliding section; 403. a door closing cambered surface; 404. a revolving door cambered surface;

601. A power assisting mechanism; 602. a handle; 603. a booster rod; 604. a push rod; 605. a second rotating shaft; 606. a first return spring; 607. a fixed block; 608. an auxiliary part; 609. a through hole;

701. a first lever portion; 702. a second lever portion;

901. A first connection section; 902. a second connection section; 903. a mounting boss; 904. a first mounting portion;

1101. A guide hole; 1102. avoiding the notch; 1103. an upper limit part; 1104. a lower limit part; 1105. a mounting groove;

1201. a second mounting portion;

1301. A retainer; 1302. an operation groove; 1303. a limit opening;

1401. a limit groove;

1801. a case; 1802. a frame edge; 1803. and a sealing gasket.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1, an embodiment of the present utility model provides a refrigerator that can open and close a door at either side (i.e., right-hand side and left-hand side).

The refrigerator of this embodiment has a case 1801, and the inside of the case 1801 is divided into a plurality of refrigerating compartments arranged up and down, each having a case opening at the front. The uppermost refrigerating compartment is provided with a door body 101 rotatable in a horizontal direction. The door 101 is rotated around one side (i.e., right-hand side or left-hand side) of the door 101 so that the bin opening can be opened and closed.

The refrigerator according to the embodiment of the utility model includes 4 hinges 201,4 and four hinges 201 respectively disposed in 4 a regions shown in fig. 1, that is, each a region is provided with one hinge 201,2 hinges 201 connected to the upper end of the door body 101, 2 hinges 201 connected to the lower end of the door body 101, 2 hinges 201 connected to the left side of the door body 101, and 2 hinges 201 connected to the right side of the door body 101. When the left side of the door body 101 is opened, the 2 hinges 201 on the left side of the door body 101 break the connection of the door body 101 with the case 1801, the 2 hinges 201 on the right side of the door body 101 hold the connection of the door body 101 with the case 1801, and the door body 101 can rotate about the 2 hinges 201 on the right side, thereby realizing opening and closing of the case mouth.

Referring to fig. 2 to 5, it will be appreciated that the hinge 201 includes a fixed member 202, a first shaft 301 and a movable member 203, and that the fixed member 202 and the first shaft 301 are connected to the case 1801 and remain relatively fixed to the case 1801. The movable member 203 is connected to the door body 101 and remains relatively fixed to the door body 101. The fixed part 202 is provided with a first arc-shaped boss 302, the movable part 203 is provided with a second arc-shaped boss 303, and the first arc-shaped boss 302 and the second arc-shaped boss 303 are coaxially arranged with the first rotating shaft 301, namely, the rotation center of the first arc-shaped boss 302 and the rotation center of the second arc-shaped boss 303 are concentric with the rotation center of the first rotating shaft 301. The first arc-shaped boss 302 is disposed on the outer periphery of the second arc-shaped boss 303, so that the first arc-shaped boss 302 can guide the second arc-shaped boss 303 to rotate, and a limiting effect is achieved. The opening of the first arc-shaped boss 302 is disposed toward the door body 101. The movable member 203 is further provided with a sliding groove 304, the fixed member 202 is provided with a through hole 609, the first rotating shaft 301 passes through the through hole 609 and can slide along the sliding groove 304, and an opening of the sliding groove 304 is arranged towards the box 1801. The second arc-shaped boss 303 is provided along the closed end periphery of the slide groove 304.

Referring to fig. 4, it can be understood that the sliding groove 304 includes a first sliding section 401 and a second sliding section 402, where the width of the first sliding section 401 is matched with the diameter of the first rotating shaft 301, the track is matched with the door opening track of the first rotating shaft 301, and the second sliding section 402 extends obliquely to the outside at the tail end of the first sliding section 401, i.e. there is a turning point between the first sliding section 401 and the second sliding section 402, and the movement directions of the first rotating shaft 301 in the first sliding section 401 and the second sliding section 402 are different.

Referring to fig. 4, the outer side surface of the second arc-shaped boss 303 includes a door closing arc surface 403 and a swing door arc surface 404. Referring to fig. 3, in the door-closed state, the first rotating shaft 301 is located at the junction of the first sliding section 401 and the second sliding section 402, and the door-closing cambered surface 403 is matched with the inner side surface of the first cambered boss 302. Referring to fig. 5, in the door-open state, the first rotating shaft 301 on the rotating side is located at the tail end of the second sliding section 402, and the inner side surface of the first arc-shaped boss 302 is matched with the arc surface 404 of the revolving door.

For example, when the door is opened by taking the first rotating shaft 301 on the left side as the center, the first rotating shaft 301 on the left side slides into the tail end of the second sliding section 402, and the tail end of the second sliding section 402 is in rotating fit with the first rotating shaft 301, so that the door body 101 rotates around the first rotating shaft 301 on the left side but limits sliding (refer to the state shown in fig. 5); while the first rotation shaft 301 on the right side slides to the opening of the sliding groove 304 on the right side and gradually disengages from the movable member 203 (refer to the state shown in fig. 4).

In order to better realize the position switching of the first rotating shaft 301 in the first sliding section 401 and the second sliding section 402, the fixing piece 202 is further provided with a sliding guide block 305, and the sliding guide block 305 is located inside the first arc-shaped boss 302. The movable piece 203 is further provided with a sliding press block 306, and the sliding press block 306 is used for being in sliding fit with the left side or the right side of the sliding guide block 305, so that the first rotating shaft 301 is more stably kept in the first sliding section 401 or the second sliding section 402 by changing the position relationship between the sliding guide block 305 and the sliding press block 306.

Referring to fig. 3, it can be understood that the sliding block 306 is separated from the sliding guide block 305 and is disposed opposite to each other in the front-rear direction, and at this time, the first rotation shaft 301 is located at a position where the first sliding section 401 and the second sliding section 402 meet, and the door body 101 is in a door-closed state.

Referring to fig. 4, it can be understood that when the door is opened, the door body 101 moves forward by a certain distance, so that the first rotating shaft 301 at the door opening side enters the first sliding section 401, that is, the door body 101 moves to a side far away from the sliding guide block 305, for example, to the left side, relative to the case 1801, and then the sliding press block 306 abuts against the left side of the sliding guide block 305, the outer surface of the sliding press block 306 slides along the outer surface of the sliding guide block 305, and the sliding guide block 305 and the first rotating shaft 301 act together on the door body 101, so that the door body 101 is limited in the left-right direction, and thus is not easy to fall from the case 1801. When the door body 101 continues to rotate, the first rotating shaft 301 and the sliding guide block 305 on the door opening side are both disengaged from the door body 101, thereby realizing door opening.

Referring to fig. 5, it can be understood that when the door is opened, the door body 101 moves forward by a certain distance, so that the first rotating shaft 301 at the rotating side enters the tail end of the second sliding section 402, that is, the door body 101 moves to a side far away from the sliding guide block 305, for example, to the right side, relative to the case 1801, then the sliding press block 306 abuts against the right side of the sliding guide block 305, the outer surface of the sliding press block 306 slides along the outer surface of the sliding guide block 305, the sliding guide block 305 and the first rotating shaft 301 jointly act on the door body 101, so that the door body 101 rotates around the first rotating shaft 301, the door body 101 is not easy to shake, and the door body 101 is ensured to be always connected with one side of the case 1801.

In order to realize the function of opening the door left and right, the refrigerator may be provided with other door opening mechanisms. For example, the left-right door opening mechanism includes 4 hinges 201 connected to the case 1801 and the door 101, each hinge 201 is respectively and correspondingly disposed in 1a region in fig. 1, the hinge 201 includes a fixing member 202, a first rotating shaft 301, a third rotating shaft and a moving member 203, an arc guide rail is disposed on the fixing member 202, the arc guide rail includes two relatively parallel first extending portions and second extending portions, and a connecting portion connecting the first extending portions and the second extending portions, the fixing member 202 and the arc guide rail are correspondingly provided with a sliding groove 304 facing the direction of the door 101, the sliding groove 304 includes a first sliding section 401 along the longitudinal direction of the fixing member 202 and a second sliding section 402 forming an included angle with the first sliding section 401, and the first sliding section 401 is communicated with the second sliding section 402. The first rotating shaft 301 and the third rotating shaft are fixedly arranged on the movable piece 203, the first rotating shaft 301 is positioned in the sliding groove 304 to realize the rotation of the door body 101, the third rotating shaft is positioned outside the sliding groove 304 to limit the arc-shaped guide rail, the distance between the first rotating shaft 301 and the third rotating shaft is equal to the width of the arc-shaped guide rail, when the door body 101 is closed, the first rotating shaft 301 is positioned in the sliding groove 304, and the third rotating shaft is positioned outside the sliding groove 304; when the first rotating shaft 301 and the third rotating shaft on one side of the door body 101 are separated from the inner side and the outer side of the arc-shaped guide rail, the first rotating shaft 301 on the other side moves to the innermost side of the sliding groove 304, i.e. is located at the second sliding section 402, and the first rotating shaft 301 and the third rotating shaft on the other side are located at the inner side and the outer side of the arc-shaped guide rail, respectively, so that the door body 101 is opened.

Referring to fig. 1, it will be appreciated that an embodiment of the present utility model provides a booster mechanism 601, where the booster mechanism 601 is located in the region B shown, i.e., at the bottom of the door 101. The power assisting mechanism 601 is used for assisting the door body 101 to overcome the resistance of the door body at the initial time of opening the door, so that the door body 101 moves forwards by a certain distance, the first rotating shaft 301 at the door opening side is allowed to enter the first sliding section 401, and the first rotating shaft 301 at the rotating side is also allowed to enter the tail end of the second sliding section 402. For example, referring to fig. 18, a case 1801 has a housing in which a resin member is sealed, and the housing is made of painted steel plate. The front end of the housing is bent inwardly to form a rim 1802 of the tank opening. A gasket 1803 is installed on the inner surface of the door body 101 along the entire edge thereof. The gasket 1803 contains a magnet that attracts the rim 1802 of the housing by its magnetic force, thereby maintaining the gasket 1803 in contact with the housing and thus the door 101 closed. The assist mechanism 601 can assist the user with less force to break the door 101 free of the magnetic force of the magnet and begin to move away from the rim 1802 of the housing. The B area is located near the middle of the lower part of the door body 101, and two power assisting mechanisms 601 are shown in fig. 1, namely, two B areas, and each power assisting mechanism 601 is located in one B area. Each of the power assist mechanisms 601 is for opening the adjacent side door body 101. For example, the left side power assist mechanism 601 can cause the left side door body 101 to open a certain distance, thereby causing the door body 101 to rotate about the right side hinge 201.

From the perspective of fig. 1, the hinge 201 and the power assist mechanism 601 are not exposed to the outside, and therefore, the outline thereof is not shown in fig. 1, and only the approximate position thereof is shown by a broken line outgoing line.

Referring to fig. 6 to 10, it can be appreciated that in one embodiment, the power assisting mechanism 601 includes a handle 602, a power assisting rod 603, and a push rod 604, a second rotating shaft 605 is provided on the power assisting rod 603, and the power assisting rod 603 is rotatably connected to the door body 101 at the second rotating shaft 605. The second rotating shaft 605 divides the power-assisted rod 603 into a first rod part 701 and a second rod part 702, the handle 602 is connected with the first rod part 701, the second rod part 702 is used for pushing the ejector rod 604 to move, the ejector rod 604 is slidably arranged on the door body 101, and the ejector rod 604 is used for abutting against the sliding guide block 305.

It should be noted that in other embodiments, the ejector rod 604 may also be used to directly abut the rim 1802 of the tank 1801.

Taking the left side of the door body 101 as an example, when the user holds the operation portion of the left handle 602 with his hand and pulls forward, the booster lever 603 receives a force that tends to rotate the booster lever 603 counterclockwise about the second rotation shaft 605. Further, the end of the second lever portion 702 pushes the push rod 604 toward the slide guide block 305, and the push rod 604 pressurizes the slide guide block 305, so that the door body 101 receives a force tending to rotate the door body 101 clockwise about the first rotation shaft 301 on the right side. As a result, the left seal breaks free from the magnetic force of the magnet and begins to move away from the rim 1802 of the housing.

When the handle 602 is pulled to the handle 602 inclined at an angle as shown in fig. 8 and the push rod 604 is pushed out rearward a distance with respect to the second rotation shaft 605, the door body 101 is positioned at a predetermined distance from the box opening rim 1802 of the box 1801. In this state, if the handle 602 is pulled further toward the first rotation shaft 301 on the rotation side or the door body 101 is pulled, the door body 101 is rotated about the first rotation shaft 301 on the rotation side. Thus, the opening of the case 1801 previously closed by the door 101 is opened, and the articles can be taken and placed in the refrigerator.

As shown in fig. 8, a distance L1 from the point of application of force by the handle 602 to the center axis of the second rotating shaft 605 is defined as L1, and a distance L2 from the contact point of the booster 603 with the jack 604 to the center axis of the second rotating shaft 605 is defined as L1, and the distance L1 is greater than the distance L2. Therefore, according to the principle of leverage, the door body 101 can be opened to a predetermined distance with a small force. The booster lever 603 is arranged at the bottom of the door body 101, and is hardly noticeable, and has good uniformity in appearance.

Referring to fig. 9 and 10, it can be understood that the first rod part 701 includes a first connection section 901 and a second connection section 902, where the first connection section 901 and the second rod part 702 are arranged in the same direction, i.e. are all arranged along the left-right direction, two ends of the second connection section 902 are respectively connected with the first connection section 901 and the second rod part 702, the first connection section 901 is located at the rear side of the second rod part 702, and the handle 602 is mounted on the first connection section 901, so that the handle 602 can be more rear, the hidden design is convenient to realize, the handle 602 is not easy to be exposed outside the refrigerator, and the appearance consistency of the refrigerator is improved. If the door is opened, the handle 602 extends out of the outer surface of the door body 101, and when the user releases his hand, the hand is located between the handle 602 and the door body 101, so that the problem of clamping is easy to occur.

Referring to fig. 6 to 10, it can be understood that the power assisting mechanism 601 further includes a first return spring 606, one end of the first return spring 606 is connected to the power assisting rod 603, and the other end is connected to the door body 101. The first return spring 606 has a deformation state and a natural state, when the door is closed, the first return spring 606 is in the natural state, when the door is opened, a user pulls the handle 602, the power assisting rod 603 moves along with the handle 602, the first return spring 606 is caused to be converted into the deformation state, when the user releases the handle 602, the power assisting rod 603 is reset under the action of the first return spring 606, and the first return spring 606 is also converted from the deformation state to the natural state.

Referring to fig. 6 to 12, it will be appreciated that the first return spring 606 may be an extension spring, one end of which is connected to the first lever part 701 and the other end of which is connected to the door body 101, and the extension spring is located at a side of the first lever part 701 facing away from the direction of pulling the handle 602, i.e., the user pulls the handle 602 forward, and the extension spring is located at a rear side of the first lever part 701. When the door is opened, the user pulls the handle 602, the handle 602 rotates forward relative to the door body 101, the booster rod 603 moves along with the handle 602, and the extension spring is stretched, that is, the length of the extension spring is changed from the original length to the stretched length, and the backward pulling force of the extension spring on the first rod part 701 increases as the rotation angle of the booster rod 603 increases. When the user releases the handle 602, the first lever part 701 is pulled backward by the tension spring, so that the booster lever 603 rotates in the reverse direction and returns to the original state, and accordingly, the length of the tension spring is changed from the extended length to the original length, and the tension spring returns to the natural state.

The extension spring may be connected to the second rod 702, and the extension spring is located at the front side of the second rod 702. When the door is opened, the user pulls the handle 602, and the second lever 702 stretches the extension spring toward the rear. When the user releases the handle 602, the second lever portion 702 is pulled forward by the tension spring, so that the booster lever 603 rotates in the reverse direction and returns.

It will be appreciated that the first return spring 606 may also be a compression spring, one end of which is connected to the first lever 701 and the other end of which is connected to the door body 101, and which is located on one side of the first lever 701 in a direction toward the pulling handle 602, i.e., the user pulls the handle 602 forward, and which is located on the front side of the first lever 701. When the door is opened, the user pulls the handle 602, the handle 602 rotates forward relative to the door body 101, and the booster rod 603 moves along with the handle 602, so that the compression spring is compressed, that is, the length of the compression spring is changed from the original length to the compressed length, and the backward thrust of the compression spring acting on the first rod part 701 increases as the rotation angle of the booster rod 603 increases. When the user releases the handle 602, the first lever part 701 is pushed backward by the compression spring, so that the booster lever 603 rotates in the reverse direction and returns to the original state, and accordingly, the length of the compression spring is changed from the compressed length to the original length, and the compression spring returns to the natural state.

It should be noted that the compression spring may be connected to the second rod 702, and the compression spring is located at the rear side of the second rod 702. When the door is opened, the user pulls the handle 602 and the second lever 702 presses the compression spring toward the rear. When the user releases the handle 602, the second lever portion 702 is pushed forward by the compression spring, so that the booster lever 603 rotates in the reverse direction and returns.

It can be understood that the first return spring 606 may also be a torsion spring, where the torsion spring is sleeved on the second rotating shaft 605, and one end of the torsion spring is connected to the first rod portion 701, and the other end of the torsion spring is connected to the door body 101. When the door is opened, a user pulls the handle 602, the handle 602 rotates forward relative to the door body 101, the booster rod 603 moves along with the handle 602, and the torsion spring is caused to deform, namely, the booster rod 603 rotates around the center of the torsion spring, and the torsion spring generates torque or rotation force. The torsion spring can store and release angular energy or statically fix the booster lever 603 by rotating the arm about the torsion spring central axis. The end of the torsion spring may be wound into a hook or straight torsion arm. When the user releases the handle 602, the booster rod 603 is rotated in the reverse direction and reset is achieved due to the rotation force of the torsion spring, and accordingly, the torsion spring is restored to the natural state.

Referring to fig. 6 to 12, it can be appreciated that the power assisting mechanism 601 further includes a fixing block 607, and the fixing block 607 is fixedly connected to the door body 101. Referring to fig. 11 and 12, the fixing block 607 is provided with a guide hole 1101, the guide hole 1101 is provided in a direction perpendicular to the door body 101, and the guide hole 1101 penetrates the fixing block 607. The ejector rod 604 is arranged in the guide hole 1101 in a penetrating manner, the ejector rod 604 moves along the axial direction of the guide hole 1101, the guide hole 1101 can enable the ejector rod 604 to move along a preset direction, the movement process is more stable, and deflection or shaking is not easy to occur.

Referring to fig. 11 and 12, it can be appreciated that the fixing block 607 is provided with the escape notch 1102, the escape notch 1102 is located at a side of the fixing block 607 near the second lever portion 702, the escape notch 1102 communicates with the guide hole 1101, and at least part of the second lever portion 702 is located in the escape notch 1102. The fixed block 607 is provided with an upper limiting part 1103 and a lower limiting part 1104, the upper limiting part 1103 and the lower limiting part 1104 are both positioned at the avoidance gap 1102, specifically, the upper limiting part 1103 is positioned at the upper side of the avoidance gap 1102, the lower limiting part 1104 is positioned at the lower side of the avoidance gap 1102, and the upper limiting part 1103 and the lower limiting part 1104 define the upper boundary and the lower boundary of the avoidance gap 1102.

Referring to fig. 7, 8 and 10, it can be understood that the second lever 702 is always located between the upper limit portion 1103 and the lower limit portion 1104 during the door opening and closing process, that is, during the rotation of the booster lever 603, so that the second lever 702 can be limited in the up-down direction, and the second lever 702 is prevented from being deviated in the up-down direction to affect the normal operation of the jack 604.

It can be appreciated that, because the included angle between the second rod portion 702 and the axis of the guide hole 1101 continuously changes during the rotation process, if the avoiding notch 1102 is not provided, the suspended phenomenon occurs at the end of the ejector rod 604 near the second rod portion 702, which results in unstable movement of the ejector rod 604 and easy jamming. For example, when the door is opened, when the ejector rod 604 is in the ejection state, the end of the ejector rod 604 close to the second rod 702 is located in the guide hole 1101, and when the door is closed, the ejector rod 604 is in the retraction state, the end of the ejector rod 604 close to the second rod 702 extends out of the guide hole 1101, and during the door opening process, the end of the ejector rod 604 close to the second rod 702 is retracted into the guide hole 1101. If the end of the ejector rod 604 near the second rod 702 is located in the guide hole 1101 when the ejector rod 604 is in the retracted state, the second rod 702 is interfered by the fixing block 607 and cannot eject the ejector rod 604 due to the lack of the avoidance notch 1102. Therefore, by providing the escape notch 1102, when the ejector rod 604 is in the retracted state, the end of the ejector rod 604, which is close to the second rod 702, is located in the guide hole 1101, and the second rod 702 can continue to rotate to eject the ejector rod 604 without interfering with the fixing block 607. Therefore, by arranging the avoidance notch 1102 on the fixing block 607, one end of the ejector rod 604, which is close to the second rod 702, is always positioned in the guide hole 1101, so that the ejector rod 604 can be supported and limited, and the ejector rod 604 is not easy to be blocked due to stress deviation.

The fixing block 607 may be an independent component, and may be connected to the door body 101 through a connecting member, or the fixing block 607 may be an integral structure with the door body 101, that is, the fixing block 607 may be one part of the door body 101.

It will be appreciated that the booster 601 further includes a second return spring, one end of which is connected to the ejector rod 604 and the other end of which is connected to the fixing block 607. The second reset spring has deformation state and natural state, and when closing the door, the second reset spring is in natural state, when opening the door, the user pulls handle 602, and helping hand pole 603 follows handle 602 motion, and then makes ejector pin 604 ejecting, makes the second reset spring change into deformation state, and when the user unclamps handle 602, ejector pin 604 realizes the reset under the effect of second reset spring, and the second reset spring also changes to natural state by deformation state.

Referring to fig. 9, it will be understood that the ejector rod 604 is provided with a mounting boss 903, the mounting boss 903 is located at an end of the ejector rod 604 near the second rod portion 702, that is, the mounting boss 903 is located at a front end of the ejector rod 604, the mounting boss 903 is provided with a first mounting portion 904, one end of the second return spring is mounted on the first mounting portion 904, and the first mounting portion 904 is located at a rear side of the mounting boss 903. Referring to fig. 11 and 12, the fixing block 607 is provided with a mounting groove 1105 at a position corresponding to the mounting boss 903, the mounting groove 1105 accommodating the mounting boss 903 and the first mounting portion 904 such that the jack 604 does not interfere with the fixing block 607 in the direction of the forward-backward movement. The mounting groove 1105 is provided with a second mounting portion 1201 on a side away from the mounting boss 903, and one end of a second return spring is mounted on the second mounting portion 1201.

It will be appreciated that the second return spring may be a compression spring having one end connected to the first mounting portion 904 and the other end connected to the second mounting portion 1201 and located on the rear side of the mounting boss 903. When the door is opened, the user pulls the handle 602, the handle 602 rotates forward relative to the door body 101, the booster rod 603 moves along with the handle 602, the ejector rod 604 is ejected backward, the distance between the first mounting portion 904 and the second mounting portion 1201 is reduced, the compression spring is compressed, that is, the length of the compression spring is changed from the original length to the compressed length, and the backward thrust force of the compression spring on the ejector rod 604 is increased along with the increase of the rotation angle of the booster rod 603. When the user releases the handle 602, the plunger 604 is pushed forward by the compression spring, so that the plunger 604 moves in the reverse direction and returns to the original state, and accordingly, the length of the compression spring is changed from the compressed length to the original length, and the compression spring returns to the natural state.

It will be appreciated that in other embodiments, the second return spring may be an extension spring, where the mounting boss 903 is located at the rear end of the ejector rod 604, the first mounting portion 904 is located at the front side of the mounting boss 903, the second mounting portion 1201 is located in front of the first mounting portion 904, and one end of the extension spring is connected to the first mounting portion 904, and the other end is connected to the second mounting portion 1201. When the door is opened, the user pulls the handle 602, the handle 602 rotates forward relative to the door body 101, the booster rod 603 moves along with the handle 602, the ejector rod 604 is ejected backward, the distance between the first mounting portion 904 and the second mounting portion 1201 is increased, the extension spring is caused to be stretched, that is, the length of the extension spring is changed from the original length to the stretched length, and the forward pulling force of the extension spring on the ejector rod 604 is increased along with the increase of the rotation angle of the booster rod 603. When the user releases the handle 602, the push rod 604 is rotated in the reverse direction and is reset due to the forward pulling force of the extension spring, and accordingly, the length of the extension spring is changed from the extended length to the original length, and the extension spring is restored to the natural state.

It can be appreciated that, in order to enhance the labor-saving effect of the power-assisting mechanism 601, the length of the first rod portion 701 may be increased, so that the distance L1 from the force point applied by the handle 602 to the central axis of the second rotating shaft 605 is longer, the handle 602 is mounted at the end of the first rod portion 701 to form a cantilever structure, and the handle 602 has a certain weight, which may cause the power-assisting rod 603 to incline, thereby generating a clamping stagnation feeling when the power-assisting rod 603 is rotated, and affecting the use experience of a user. In addition, if the booster lever 603 has no limit structure, it is easy to rotate beyond a predetermined position, resulting in failure of the spring or noise generated by the handle 602 striking the door 101 or the case 1801.

Referring to fig. 13 and 14, it can be appreciated that the power assisting mechanism 601 further includes a retainer 1301 for limiting the handle 602 and the power assisting lever 603, so that the power assisting lever 603 rotates more smoothly, and the power assisting lever 603 is limited to rotate within a certain range. The holder 1301 is provided with an operation groove 1302, and the handle 602 is positioned in the operation groove 1302, and a user can reach into the operation groove 1302 to grasp the handle 602. The retainer 1301 is provided with a spacing groove 1401 on one side far away from the ejector rod 604, and the spacing groove 1401 is communicated with the operation groove 1302, namely, the spacing groove 1401 is located at the right side wall of the operation groove 1302, and the right side part of the handle 602 is located in the spacing groove 1401, so that the handle 602 can slide along the front-back direction of the spacing groove 1401, the spacing groove 1401 limits the vertical direction of the handle 602, and the handle 602 is prevented from deflecting in the vertical direction due to the dead weight of the handle 602 or downward component force generated by the force application of a user. The retainer 1301 is provided with spacing mouth 1303 near one side of ejector pin 604, and spacing mouth 1303 and operation groove 1302 intercommunication, spacing mouth 1303 are located the left side wall department of operation groove 1302 promptly, and first pole portion 701 passes spacing mouth 1303 back and gets into operation groove 1302, and the front and back lateral wall of spacing mouth 1303 can carry out spacingly to the fore-and-aft direction of first pole portion 701 to inject the rotation angle of two directions of helping hand pole 603.

Referring to fig. 6 and 13, it can be understood that the handle 602 includes an auxiliary portion 608, where the auxiliary portion 608 is located in the limiting opening 1303, and the auxiliary portion 608 and the first rod portion 701 are disposed in the up-down direction, so that a certain limiting effect can be provided in the up-down direction, so that the power assisting rod 603 rotates more stably.

The process of the power assist mechanism 601 and the hinge 201 according to the embodiment of the present utility model will be described below with reference to fig. 15 to 17.

Referring to fig. 15, it can be understood that the door body 101 is in a closed state, the sliding block 306 is separated from the sliding guide block 305, and is disposed opposite in the front-rear direction, and at this time, the first rotation shaft 301 is located at a position where the first sliding section 401 and the second sliding section 402 meet. The plunger 604 is retracted within the fixed block 607 and the first return spring 606 is in a natural state.

While the assist mechanism 601 and hinge 201 are shown in fig. 16 on the door opening side of the door 101, it will be appreciated that the handle 602 is pulled forward by the user and the assist lever 603 is subjected to a force tending to rotate the assist lever 603 about the second pivot 605, thereby causing the end of the second lever 702 to push the push rod 604 toward the slide guide block 305, the push rod 604 exerting a rearward force on the slide guide block 305, the second pivot 605 being held relatively stationary with respect to the door 101 due to the slide guide block 305 remaining relatively stationary with respect to the housing 1801, such that the second pivot 605 is subjected to a forward reaction force which urges the door opening side of the door 101 toward the front. The outer surface of the sliding block 306 slides along the outer surface of the sliding guide block 305, and the first rotating shaft 301 slides toward the opening of the sliding groove 304 and gradually disengages from the movable member 203. As a result, the door-side seal breaks free from the magnetic force of the magnet and begins to move away from the rim 1802 of the housing.

As the power assisting mechanism 601 and the hinge 201 are located on the rotating side of the door body 101 in fig. 17, it can be understood that, as the door body 101 is opened, the first rotating shaft 301 slides into the tail end of the second sliding section 402, the tail end of the second sliding section 402 is in running fit with the first rotating shaft 301, the inner side surface of the first arc-shaped boss 302 is matched with the arc surface 404 of the revolving door, the outer surface of the sliding pressing block 306 slides along the outer surface of the sliding guide block 305, and the power assisting mechanism 601 is kept relatively stationary with the door body 101.

It should be noted that, the power assisting mechanism 601 may also adopt other structural forms, for example, a gear transmission mechanism is adopted in the middle to replace a lever transmission mechanism, the handle 602 is connected to the driving wheel, the driving wheel is driven to rotate by the handle 602, the driving wheel transmits power to the driven wheel, and the driven wheel transmits power to the ejector rod 604 (provided with a rack), so that the ejector rod 604 can be driven to eject towards the box 1801.

Referring to fig. 2 and 18, it can be understood that the hinge 201 installed at the lower portion of the door body 101 further includes a roller assembly 204, the roller assembly 204 is installed at the bottom of the movable member 203, the fixed member 202 is provided with a guide portion 205, the guide portion 205 is located at the top of the fixed member 202 and cooperates with the roller assembly 204, and the guide portion 205 is used to guide the movement of the door body 101 in the front-rear direction.

Referring to fig. 2 and 18, it can be appreciated that the guide 205 includes a first ramp section 206, the first ramp section 206 being located at a rear half of the guide 205, a front end of the first ramp section 206 being higher than a rear end of the first ramp section 206. When the door is closed, the roller assembly 204 slides on the guide 205 to reduce the motion friction between the fixed member 202 and the movable member 203. When the roller assembly 204 passes over the front end of the first inclined surface section 206, that is, passes over the highest point of the first inclined surface section 206, the door body 101 falls down along with the track of the first inclined surface section 206, and the door body 101 can realize gravity self-locking, and is sucked with the box 1801 by the sealing element to complete sealing.

Referring to fig. 2 and 18, it can be appreciated that the guide 205 includes a second ramp section 207, the second ramp section 207 being located at a front half of the guide 205, the front end of the second ramp section 207 being lower than the rear end of the second ramp section 207. When the door is closed, the roller assembly 204 slides on the second ramp section 207, and the door 101 gradually moves upward relative to the housing 1801, helping to cross the highest point of the guide 205 and reducing the resistance experienced during the closing process.

Referring to fig. 2 and 18, it can be appreciated that the movable member 203 is provided with a recess 208, and the recess 208 is used to accommodate the roller assembly 204, so that the space occupied by the hinge 201 can be reduced, resulting in a more compact structure. The roller assembly 204 includes a spindle that connects the two sidewalls of the recess 208 and a wheel that is sleeved over the spindle such that the wheel is able to rotate about the axis of the spindle.

It is understood that the power assisting mechanism 601 may be provided on the side of the door body 101 in addition to the bottom of the door body 101. The advantage of the power assisting mechanism 601 arranged at the bottom of the door body 101 is that the power assisting mechanism can not be exposed on the outer surface of the refrigerator, so that hidden design is realized, and the appearance consistency is better.

It can be understood that the power assisting mechanism 601 can be arranged on other storage equipment besides the refrigerator, the storage equipment is provided with a box 1801 and a door body 101, one side of the door body 101 is rotatably connected to the box 1801, the power assisting mechanism 601 is arranged on the door body 101, the ejector rod 604 stretches out by utilizing the principle of a lever to achieve the function of assisting in opening the door, and a user can apply smaller force to the handle 602 to achieve the effect of assisting in opening the door when pulling the handle 602 due to enough travel of the handle 602.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (14)

1. The helping hand mechanism for have storing equipment of box and door body, its characterized in that includes:

The ejector rod is arranged on the door body in a sliding manner and is used for abutting against the box body;

The power-assisted rod is rotationally connected with the door body through a second rotating shaft, the second rotating shaft divides the power-assisted rod into a first rod part and a second rod part, the distance from the free end of the first rod part to the second rotating shaft is larger than the distance from the free end of the second rod part to the second rotating shaft, and the second rod part is used for pushing the ejector rod to move towards the box body;

A handle connected to the first lever portion;

The first rod part comprises a first connecting section and a second connecting section, two ends of the second connecting section are respectively connected with the first connecting section and the second rod part, the first connecting section is positioned on one side, close to the box body, of the second rod part, and the handle is mounted on the first connecting section.

2. The assist mechanism as set forth in claim 1, further comprising a holder provided with an operation groove, the handle being located in the operation groove, a limit groove being provided on a side of the holder away from the jack, the limit groove being communicated with the operation groove, a part of the handle being located in the limit groove to limit the handle in an up-down direction.

3. The power assisting mechanism as claimed in claim 1, further comprising a retainer provided with an operation groove, wherein the handle is located in the operation groove, a limit opening is formed in one side of the retainer, which is close to the ejector rod, and is communicated with the operation groove, the first rod portion penetrates through the limit opening, and the front side wall and the rear side wall of the limit opening limit the rotation angle of the power assisting rod.

4. A booster mechanism as set forth in claim 3 wherein said handle includes an auxiliary portion located within said limit opening, said auxiliary portion being disposed in an up-down direction with said first lever portion.

5. The booster mechanism of claim 1 further comprising a first return spring having one end connected to the booster rod and another end for connection to the door body.

6. The power assisting mechanism according to claim 1, further comprising a fixed block, wherein the fixed block is fixedly connected to the door body, a guide hole is formed in the fixed block, the guide hole penetrates through the fixed block, and the ejector rod penetrates through the guide hole.

7. The booster mechanism of claim 6 wherein the fixed block is provided with an avoidance gap, the avoidance gap is located on a side of the fixed block adjacent to the second rod portion, the avoidance gap is in communication with the guide hole, and at least a portion of the second rod portion is located in the avoidance gap.

8. The booster mechanism of claim 6 further comprising a second return spring having one end connected to the ejector pin and the other end connected to the fixed block.

9. A refrigerator, comprising:

A case;

the door body is arranged on the box body;

the booster mechanism of any one of claims 1 to 8, mounted to the door body.

10. The refrigerator of claim 9, wherein the power assisting mechanism is located at a bottom of the door body.

11. The refrigerator of claim 9, wherein the door body has 4 corners connected to the refrigerator body by hinges allowing either one of left and right sides of the door body to be engaged with and disengaged from the refrigerator body, the hinges including a fixed member, a first rotation shaft, and a movable member, the fixed member and the first rotation shaft being connected to the refrigerator body, the movable member being connected to the door body, the movable member being provided with a sliding groove, the fixed member being provided with a through hole, the first rotation shaft being provided through the through hole and being slidable along the sliding groove, the sliding groove having an opening toward the refrigerator body, the sliding groove including a first sliding section and a second sliding section, the first rotation shaft being different in a moving direction of the first sliding section and the second sliding section, the opening of the sliding groove being located at the first sliding section, the first rotation shaft being held at the first sliding section and the second sliding section at a junction between the first rotation shaft and the second sliding section when the door body is closed, the first rotation shaft being allowed to enter the other side of the sliding body when the first rotation shaft is opened, and the other side of the sliding section is restricted from being rotated around the first rotation shaft.

12. The refrigerator of claim 11, wherein the fixing member is provided with a first arc-shaped boss, the moving member is provided with a second arc-shaped boss, and the first arc-shaped boss is disposed at an outer periphery of the second arc-shaped boss, so that the first arc-shaped boss can guide the second arc-shaped boss to rotate.

13. The refrigerator of claim 11, wherein the fixed member is provided with a sliding guide block, and the movable member is provided with a sliding block for sliding engagement with a left side or a right side of the sliding guide block, and for holding the first rotation shaft at a position of the first sliding section or the second sliding section.

14. The refrigerator of claim 13, wherein the ejector pin is capable of abutting the sliding guide block.