CN116136147A - Thermal insulation door for refrigeration house - Google Patents

Abstract

The application relates to the technical field of low-temperature storage and discloses a heat-preservation door for a refrigeration house, which comprises a door body, a sealing plate, a guide piece and a guide mechanism, wherein the door body is movably connected to a door frame; the sealing plate is movably arranged at the bottom of the door body and can move between a first position for being abutted against the ground to seal a gap between the door body and the ground and a second position for being separated from the ground; a guide fixed to the sealing plate; the guide mechanism is fixed on the door frame, and the fixed setting position of the guide mechanism is the position corresponding to the guide piece when the door body is in a closed state, so that the guide mechanism and the guide plate are matched to drive the sealing plate to move; in the closing process of the heat preservation door, the guide piece is displaced under the guide action of the guide mechanism, so that the sealing plate is driven to move from the second position to the first position to be tightly attached to the ground for sealing.

Description

Thermal insulation door for refrigeration house

Technical Field

The application relates to the technical field of low-temperature storage, for example, to a heat preservation door for a refrigeration house.

Background

At present, the refrigerator is widely applied to the storage of foods, medicines, vaccines and biological samples, and compared with the refrigerator, the refrigerator has larger storage space and can store the cost at low temperature greatly. In order to improve the heat preservation performance of the refrigeration house, a sealing plate is generally arranged at a gap of the heat preservation door. In the opening and closing process of the thermal insulation door, friction between the door body and the sealing plate or between the sealing plate and the ground is large, and the sealing plate is worn, so that the sealing effect of the thermal insulation door is affected.

In the prior art, chinese patent application publication No. CN103527050a discloses a floating open-close type thermal insulation door, which is a sliding door, and when opened, the thermal insulation door floats in both outward and upward directions, and when closed, the thermal insulation door sinks in both inward and downward directions. When floating upwards, the sealing rubber strip is separated from the bottom concrete threshold and the door frame, so that the friction force between the sealing rubber strip and the bottom concrete threshold and between the sealing rubber strip and the door frame is reduced, and the door is opened easily and conveniently; when the thermal insulation door is closed, the thermal insulation door moves downwards, and the sealing rubber strips press the bottom concrete threshold and the door frame, so that a good sealing effect is achieved.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

1. the threshold is arranged, so that the wheel type transportation tool is inconvenient to enter and exit;

2. the weight of the thermal insulation door is relatively large, and the lifting is relatively laborious when opening.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a heat preservation door for a refrigeration house, so as to solve the problem of how to better improve the sealing effect of the heat preservation door.

In some embodiments, the thermal insulation door for the refrigeration house comprises a door body, a sealing plate, a guide piece and a guide mechanism, wherein the door body is movably connected to a door frame; the sealing plate is movably arranged at the bottom of the door body and can move between a first position for being abutted against the ground to seal a gap between the door body and the ground and a second position for being separated from the ground; a guide fixed to the sealing plate; the guide mechanism is fixed on the door frame, and the fixed setting position of the guide mechanism is the position corresponding to the guide piece when the door body is in a closed state, so that the guide mechanism and the guide plate are matched to drive the sealing plate to move; in the closing process of the heat preservation door, the guide piece is displaced under the guide action of the guide mechanism, so that the sealing plate is driven to move from the second position to the first position to be tightly attached to the ground for sealing.

In the embodiment of the disclosure, the thermal insulation door may be a translation door in which the door translates relative to the door frame, or may be a revolving door in which the door rotates relative to the door frame, which is not limited herein. Regardless of the type of door, there is a gap between the door body and the ground in order to allow the door to move smoothly with respect to the door frame. The closing plate is movably arranged at the bottom of the door body, and the movement of the door body comprises a first stage and a second stage in the process of closing the door body. In the first stage of door movement, the door body stroke is larger, and the relative position of the sealing plate and the door body is unchanged. In the second stage of door movement, the door travel is small and the sealing plate moves from the first position to the second position. The seal plate is preferably made of an elastic material to maximize the sealing effect and reduce wear during use of the seal plate. The guide piece is fixed on the sealing plate and is used for dragging the sealing plate to move. The guide mechanism is fixed to the door frame, where the position of the guide mechanism is kept fixed relative to the position of the door frame, and is not strictly limited to being mounted to the door frame. For example, the guide mechanism may be fixed to a wall where the door frame is located or to the ground near the door frame. The guide structure limits the movement of the guide piece, so that the guide piece can only move according to a preset track under the guide action of the guide mechanism, and the sealing plate is driven to move downwards. In the process of closing the heat-preserving door, the position of the sealing plate relative to the door body is kept unchanged in the first stage, and in the second stage, the guiding piece pulls the sealing plate to move downwards under the guiding action of the guiding mechanism, so that the sealing plate is tightly attached to the ground, and sealing is realized.

In some embodiments, the thermal insulation door for a refrigerator further comprises a sealing plate rotating shaft, the sealing plate rotating shaft is rotatably arranged at the bottom of the door body along the width direction of the door body, the sealing plate rotating shaft is rotatably connected with the sealing plate rotating shaft, and the sealing plate is rotated to different angles and is different from the ground in height.

In some embodiments, the guide mechanism includes a first guide groove having an outwardly facing end that is open for guiding; the guide piece protrudes outwards from the sealing plate, and enters the first guide groove to move along the first guide groove so as to drive the sealing part to rotate to a first position.

In some embodiments, the guide member comprises a second guide groove, the end part facing the inner side is provided with a guide opening, the guide mechanism comprises a protruding block which is fixedly arranged, and the protruding block drives the guide member to move after entering the second guide groove from the second opening in the process of closing the door body into the door frame so as to enable the sealing plate to rotate.

In some embodiments, the first guide groove is circular arc-shaped.

In some embodiments, the slope of the first guide groove increases gradually from the outside to the inside.

In some embodiments, the thermal insulation door for the refrigerator further comprises a return spring, one end of the return spring is fixed to the door body, the other end of the return spring is fixed to the sealing plate, and the initial state of the return spring is a state that the sealing plate is in a second position separated from the ground.

In some embodiments, the thermal insulation door for a refrigerator is characterized in that a hollow cavity is formed in the bottom of the door body, the bottom of the hollow cavity is open, the sealing plate is arranged in the hollow cavity, and when the door body is in an open state, the sealing plate is received in the hollow cavity; when the door body is in a closed state, the sealing plate extends out of the hollow inner cavity and is tightly attached to the ground to realize sealing.

In some embodiments, the thermal insulation door for the refrigerator is configured such that the sealing plate is pressed against the top wall of the hollow cavity when in the second position, so as to define the position of the sealing plate, and the guiding piece and the guiding mechanism are guided in a matching manner.

In some embodiments, the number of the guide pieces is two, and the two guide pieces are arranged at two ends of the sealing plate; the number of the guide mechanisms is two, and the positions of the two guide mechanisms correspond to the positions of the two guide pieces.

The embodiment of the disclosure provides a thermal insulation door for freezer, can realize following technical effect:

1. the sealing plate movably arranged on the door body moves downwards under the traction of the guide piece to realize sealing, so that the heat preservation effect of the refrigeration house can be improved;

2. the sealing plate is movably arranged, so that the ground can be matched with the sealing plate for sealing without a threshold or a groove, the ground is smooth, personnel and goods can enter and exit conveniently, and particularly wheeled transport tools can enter and exit conveniently;

3. the driving of the sealing plate is completed only by the relative movement between the door body and the door frame, no additional driving device is needed, the cost is saved, and the use is convenient;

4. in the second stage of closing, the inertia of the door body is used for driving the sealing plate to move downwards, so that the door closing noise is reduced.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic view of an overall structure of a thermal door and door frame for a refrigerator according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a thermal insulation door for a refrigerator according to an embodiment of the present disclosure with a door frame removed;

FIG. 3 is an enlarged partial schematic view of a thermal insulation door for a freezer according to an embodiment of the present disclosure with a door frame removed;

FIG. 4 is a schematic structural view of a guide mechanism for a thermal insulation door of a refrigerator according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural view of another guide mechanism for a thermal insulation door of a refrigerator according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a portion of a thermal door for a refrigerator according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of a thermal insulation board for a thermal insulation door of a refrigerator in a second position according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of a thermal insulation board for a thermal insulation door of a refrigerator in a first position according to an embodiment of the present disclosure;

fig. 9 is a schematic diagram showing a comparison of the states of an insulation board for an insulation door of a refrigerator in a first position and a second position according to an embodiment of the present disclosure.

Reference numerals:

100: a door body; 200: a door frame; 300: a sealing plate; 400: a guide member;

500: a guide mechanism; 510: a guide opening; 520: a first guide groove;

600: a sealing plate rotating shaft; 700: and a return spring.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

Referring to fig. 1 to 9, an embodiment of the present disclosure provides a thermal insulation door for a refrigerator, including a door body 100, a sealing plate 300, a guide 400, and a guide mechanism 500, wherein the door body 100 is movably connected to a door frame 200; the sealing plate 300 is movably arranged at the bottom of the door body 100, and the sealing plate 300 can move between a first position for being abutted against the ground to seal a gap between the door body 100 and the ground and a second position for being separated from the ground; a guide 400 fixed to the sealing plate 300; the guide mechanism 500 is fixed on the door frame 200, and the fixed setting position of the guide mechanism 500 is the position corresponding to the guide piece 400 when the door body 100 is in the closed state, so that the guide mechanism 500 and the guide plate are matched to move with the sealing plate 300;

during the closing process of the thermal insulation door, the guide piece 400 is displaced under the guide action of the guide mechanism 500, so that the sealing plate 300 is driven to move from the second position to the first position to be tightly abutted against the ground for sealing.

In the embodiment of the present disclosure, the thermal insulation door may be a translational door in which the door body 100 translates relative to the door frame 200, or may be a revolving door in which the door body 100 rotates relative to the door frame 200, which is not limited herein. Regardless of the type of door, there is a gap between the door body 100 and the ground in order to smoothly move the door body 100 with respect to the door frame 200. The sealing plate 300 is movably disposed at the bottom of the door body 100, and the movement of the door body 100 includes a first stage and a second stage during the closing of the door body 100. In the first stage of the movement of the door body 100, the stroke of the door body 100 is large, and the relative position of the sealing plate 300 to the door body 100 is unchanged. In the second stage of the movement of the door body 100, the door body 100 is less in stroke, and the sealing plate 300 is moved from the first position to the second position. The sealing plate 300 is preferably made of an elastic material to improve sealing effect as much as possible and to reduce abrasion during use of the sealing plate 300. The guide 400 is fixed to the sealing plate 300, and the guide 400 is used to draw the sealing plate 300 to move. The guide mechanism 500 is fixed to the door frame 200, and here, the position of the guide mechanism 500 is kept fixed with respect to the position of the door frame 200, and is not strictly limited to being mounted to the door frame 200. For example, the guide mechanism 500 may be fixed to a wall where the door frame 200 is located or to the ground near the door frame 200. The guide structure limits the movement of the guide 400 such that the guide 400 can only move according to a predetermined orbit under the guide of the guide mechanism 500, thereby driving the sealing plate 300 to move downward. In the process of closing the thermal insulation door, in the first stage, the position of the sealing plate 300 relative to the door body 100 is kept unchanged, and in the second stage, the guide piece 400 pulls the sealing plate 300 to move downwards under the guiding action of the guide mechanism 500, so that the sealing plate 300 is tightly attached to the ground, and sealing is achieved.

The embodiment of the disclosure provides a thermal insulation door for freezer, can realize following technical effect:

the sealing plate 300 movably arranged on the door body 100 moves downwards under the traction of the guide piece 400 to realize sealing, so that the heat preservation effect of the refrigeration house can be improved; the sealing plate 300 is movably arranged, so that the ground can be matched with the sealing plate 300 for sealing without a threshold or a groove, the ground is smooth, personnel and goods can conveniently enter and exit, and particularly wheeled transport tools can conveniently enter and exit; the driving of the sealing plate 300 is completed only by the relative movement between the door body 100 and the door frame 200, no additional driving device is required, the cost is saved, and the use is convenient; in the second stage of closing, the inertia of the motion is used to drive the sealing plate 300 downward, reducing the door closing noise.

Alternatively, the sealing plate 300 has a length corresponding to the width of the door body 100, so that a gap between the door body 100 and the opposite side can be covered, thereby improving the insulation effect of the insulation door.

Alternatively, both sides of the door body 100 in the width direction are opened with sliding grooves, both ends of the sealing plate 300 extend into the sliding grooves, and the guide 400 extends outward from the sliding grooves. Thus, in the second stage of closing the door body 100, the guide 400 moves downward under the guide of the guide mechanism 500, and the sealing plate 300 is drawn downward to achieve sealing.

Optionally, the heat insulation door for a refrigerator further comprises a sealing plate rotating shaft 600 rotatably disposed at the bottom of the door body 100 along the width direction of the door body 100, wherein the sealing plate 300 is rotatably connected to the sealing plate rotating shaft 600, and the heights of the sealing plate 300 from the ground are different when the sealing plate 300 is rotated to different angles.

The sealing strip rotation shaft may be a long shaft penetrating the sealing plate 300 or a short shaft extending outward from both sides of the sealing plate 300. A sealing bar rotating shaft is provided, and a sealing plate 300 is rotatably coupled to the door body 100. The cross section of the sealing plate 300 perpendicular to the rotation axis thereof is eccentrically disposed with respect to the rotation axis, so that the height of the sealing plate 300 from the ground is different when the sealing plate 300 is rotated to different angles. By virtue of such arrangement, in the second stage of closing the door body 100, the guide 400 pulls the sealing plate 300 to rotate under the guide of the guide mechanism 500, thereby causing the sealing plate 300 to abut against the ground to achieve sealing. The sealing plate 300 is provided in a rotating form, and because of the fixation of the rotating shaft, traction at any position can enable the two sides of the sealing plate 300 to synchronously move when the sealing plate 300 moves. In particular, in the above-mentioned installation form, the single-side installation guide 400 may not allow the both ends of the sealing plate 300 to move synchronously, which may affect the sealing effect, compared with the form in which the both ends of the door body 100 are provided with the sliding grooves. And the sealing strip rotating shaft is provided with the guide 400 only at one end of the sealing strip, so that the sealing plate 300 can synchronously rotate everywhere, thereby realizing uniform sealing.

Alternatively, the guide mechanism 500 includes a first guide groove 520, and an end of the first guide groove 520 facing the outside presents a guide opening 510; the guide 400 protrudes outward from the sealing plate 300, and the guide 400 enters the first guide groove 520 to move along the first guide groove 520 to rotate the sealing part to the first position.

When the door body 100 is a revolving door, the first side is rotatably connected to the door frame 200 through a hinge, and the guide 400 is disposed at the second side of the door body 100. The first guide groove 520 is fixed to the door frame 200 and corresponds to the position of the guide 400. The second stage of the movement of the door body 100 is a process in which the second side of the door body 100 contacts the door frame 200. In this form, the guide 400 protrudes outward to mean that the guide portion extends in the width direction of the door body 100 and beyond the door body 100. The outward direction of the first guide groove 520 means that the entire arrangement direction of the first guide groove 520 is substantially perpendicular to the arrangement direction of the guide 400, that is, along the thickness direction of the door body 100. The outward direction of the first guide groove 520 refers to a direction in which the first guide groove 520 first contacts the guide 400 during the closing of the door body 100, that is, a direction toward the opening side of the door body 100 along the width direction of the door body 100. The first guide groove 520 presents a guide opening 510 toward the outside, the guide opening 510 having a size larger than that of the guide 400, and the guide opening 510 smoothly interfaces with the first guide groove. The guide opening 510 may be flared in the beginning, which is provided for the purpose of facilitating the entry of the guide 400 into the first guide groove 520. The guide 400 enters the first guide groove 520 and moves along the first guide groove 520. The movement of the guide 400 in the first guide groove 520 is transmitted to the sealing plate 300, driving the sealing plate 300 to rotate. The sealing plate 300 rotates to the first position, and the sealing plate 300 presses the ground to realize sealing. The first guide groove 520 is provided to the door frame 200, and the guide mechanism 500 does not scrape the goods entering and exiting the thermal insulation door when the door body 100 is in the opened state.

When the door body 100 is a sliding door, the second side of the door body 100 moves beyond the first side of the door frame 200 toward the second side of the door frame 200 during the closing of the door body 100. The guide 400 protruding outward from the sealing plate 300 means that the guide 400 extends toward the second side of the door frame 200 in the width direction of the door body 100 and beyond the door body 100. The first guide groove 520 facing outward means that the first guide groove 520 is disposed along the width direction of the door body 100 and faces the guide 400. The end of the first guide groove 520 facing the outside presents a guide opening 510, the guide opening 510 having a size larger than that of the guide 400, and the guide opening 510 smoothly interfaces with the first guide groove 520. This is provided to facilitate the entry of the guide 400 into the first guide groove 520. The guide 400 enters the first guide groove 520 and moves along the first guide groove 520. The movement of the guide 400 in the first guide groove 520 is transmitted to the sealing plate 300, driving the sealing plate 300 to rotate. The sealing plate 300 rotates to the first position, and the sealing plate 300 presses the ground to realize sealing.

Optionally, the guide 400 includes a second guide groove, the end facing the inner side presents a guide opening 510, and the guide mechanism 500 includes a fixedly disposed protrusion, and the protrusion moves the guide 400 to rotate the sealing plate 300 after entering the second guide groove through the guide opening 510 during the process of closing the door body 100 into the door frame 200.

When the door body 100 is a revolving door, the first side of the door body 100 is rotatably connected to the door frame 200 through a hinge, and the guide 400 is disposed on the second side of the door body 100. The guide 400 is provided with a second guide groove, and the guide mechanism 500 includes a fixedly provided protrusion. The inward direction of the second guide groove means a direction along the width direction of the door body 100 and toward the closing side of the door body 100. The position of the projection corresponds to the position of the second guide groove when the door body 100 is closed. The guide opening 510 has a size larger than that of the projection, which is provided to facilitate the projection to be caught in the second guide groove. The process of closing the door body 100 into the door frame 200 is a second stage of closing the door body 100. In this process, the projection passes through the guide opening 510 and enters the second guide groove. Due to the fixed position of the projection, the projection moves in the second guide groove, limiting the movement of the guide 400. The bump causes the guide 400 to move along a predetermined trajectory, rotate to a second position, and compress the ground to achieve a seal.

When the door body 100 is a sliding door, the second side of the door body 100 moves beyond the first side of the door frame 200 toward the second side of the door frame 200 during the closing of the door body 100. The boss is fixed to the second side of the door frame 200. The guide 400 is provided with a second guide groove. The inward direction of the second guide groove means along the width direction of the door body 100. The position of the projection corresponds to the position of the second guide groove when the door body 100 is closed. The guide opening 510 has a size larger than that of the projection, which is provided to facilitate the projection to be caught in the second guide groove. In the second stage of the movement of the door body 100, the protruding block is clamped into the second guiding groove, so that the guiding piece 400 rotates to the second position along the preset track, and the ground is pressed to realize sealing.

Alternatively, the first guide groove 520 is circular arc-shaped.

The first guide groove is circular arc-shaped, and the movement of the guide 400 into the first guide groove 520 is smooth.

Alternatively, the first guide groove 520 is a circular arc of 90 °, a tangent line of an end of the circular arc close to the ground is perpendicular to the ground, and a tangent line of an end of the circular arc distant from the ground is parallel to the ground. The arc is convex to the closed side of the door body 100. In this form, when the guide 400 enters the first guide groove 520, the guide 400 is displaced more horizontally than vertically in the initial movement in the case of uniform movement of the door body 100, and accordingly, the sealing plate 300 is rotated less. In the latter movement of the guide 400, the displacement in the vertical direction, which is greater than the horizontal direction, corresponds to the greater rotation of the sealing plate 300. In the second stage of the movement of the door body 100, the downward movement speed of the sealing plate 300 is initially slow, and the door body 100 is closed in the later stage. With such a configuration, the sealing plate 300 can be prevented from being rubbed with the ground too early, and the service life of the sealing plate 300 can be prevented from being affected.

Optionally, the second guiding groove is circular arc-shaped.

The second guide groove is arc-shaped, and the movement of the guide 400 into the second guide groove is smooth.

Optionally, the second guiding groove is a 90 ° arc, a tangent line of an end of the arc close to the ground is perpendicular to the ground, and a tangent line of an end of the arc far from the ground is parallel to the ground. The arc is convex to the closed side of the door body 100. In this form, when the guide 400 enters the second guide groove, the guide 400 is displaced more horizontally than vertically in the initial movement in the case of uniform movement of the door body 100, and accordingly, the sealing plate 300 is rotated less. In the latter movement of the guide 400, the displacement in the vertical direction, which is greater than the horizontal direction, corresponds to the greater rotation of the sealing plate 300. In the second stage of the movement of the door body 100, the downward movement speed of the sealing plate 300 is initially slow, and the door body 100 is closed in the later stage. With such a configuration, the sealing plate 300 can be prevented from being rubbed with the ground too early, and the service life of the sealing plate 300 can be prevented from being affected.

Alternatively, the slope of the first guide groove 520 gradually increases from the outside to the inside.

The first guide groove 520 is from one end to the other end which is the earliest contact with the guide 400. The displacement of the guide 400 in the horizontal direction in the first guide groove 520 counteracts the displacement of the door body 100 in the horizontal direction, and the displacement in the vertical direction pulls the sealing plate 300 to rotate. Assuming that the door body 100 rotates at a constant speed, the greater the slope of the first guide groove 520, the greater the angle at which the guide 400 drives the sealing plate 300 to rotate, and the greater the displacement of the sealing plate 300 in the vertical direction. The slope of the first guide groove 520 gradually increases from the outside to the inside, and the downward movement speed of the sealing plate 300 also gradually increases in the second stage of the movement of the door body 100. With such a configuration, the sealing plate 300 can be prevented from being rubbed with the ground too early, and the service life of the sealing plate 300 can be prevented from being affected.

Alternatively, the slope of the second guide groove gradually increases from outside to inside.

The second guiding groove is from one end which is contacted with the bump at the earliest to the other end. The displacement of the protrusion in the horizontal direction in the second guide groove is offset from the displacement of the door body 100 in the horizontal direction, and the displacement in the vertical direction pulls the sealing plate 300 to rotate. Assuming that the door body 100 rotates at a constant speed, the greater the gradient of the second guide groove, the greater the angle at which the protrusion drives the sealing plate 300 to rotate, and the greater the displacement of the sealing plate 300 in the vertical direction. The slope of the second guide groove gradually increases from the outside to the inside, and the downward movement speed of the sealing plate 300 also gradually increases in the second stage of the movement of the door body 100. With such a configuration, the sealing plate 300 can be prevented from being rubbed with the ground too early, and the service life of the sealing plate 300 can be prevented from being affected.

Optionally, the thermal insulation door for a refrigerator further includes a return spring 700, one end of the return spring 700 is fixed to the door body 100, and the other end is fixed to the sealing plate 300, and an initial state of the return spring 700 is a state in which the sealing plate 300 is in a second position spaced apart from the ground.

The provision of the return spring 700 allows the sealing plate 300 to be in a second position away from the ground when not subjected to the force between the guide 400 and the guide mechanism 500. In this way, abrasion caused by contact of the sealing plate 300 with the ground during rotation of the door body 100 can be avoided, and the door body 100 can be rotated more smoothly. In addition, the reset spring 700 can fix the position of the guide piece 400 relatively, so that the rest guide mechanisms 500 can be matched conveniently, and the sealing plate 300 is driven to rotate to realize sealing.

Optionally, the thermal insulation door for the refrigerator further includes a limiting member fixed to the door body 100, for stopping the position of the sealing plate 300, and acting together with the return spring 700, so that the position of the sealing plate 300 relative to the door body 100 is kept fixed when the sealing plate 300 is located at the second position.

Optionally, a hollow cavity is configured at the bottom of the door body 100, the bottom of the hollow cavity is open, the sealing plate 300 is arranged in the hollow cavity, and when the door body 100 is in an open state, the sealing plate 300 is retracted into the hollow cavity; when the door body 100 is in the closed state, the sealing plate 300 extends out of the hollow cavity and seals against the ground.

Thus, the sealing plate 300 is of a 'hidden design', and the appearance is concise and attractive. In addition, the portion of the hollow inner cavity outside can shield the contact between the sealing plate 300 and the door body 100, thereby improving the heat insulation effect of the door body 100.

Optionally, the sealing plate 300 is pressed against the top wall of the hollow cavity when the sealing plate 300 is located at the second position, so as to limit the position of the sealing plate 300, so that the guide piece 400 and the guide mechanism 500 realize matching guide.

In this arrangement, the second position of the sealing plate 300 is defined by the top wall of the hollow cavity, so that the service stability of the thermal insulation door is improved.

Optionally, a thermal insulation door for a refrigerator is provided, the sealing plate 300 is pressed against the top wall of the hollow cavity when being positioned at the first position,

when the sealing plate 300 rotates, the positions of both ends thereof with respect to the door body 100 are changed. When the sealing plate 300 is located at the second position, one end of the sealing plate 300 presses the ground, and the other end of the sealing plate 300 presses the ground of the door body 100. Thus, when the door body 100 is completely closed, the sealing plate 300 seals not only the gap between the sealing plate 300 itself and the ground but also the gap between the sealing plate 300 and the door body 100, thereby improving the thermal insulation effect when the thermal insulation door is closed.

Alternatively, the number of the guide members 400 is two for the heat insulation door of the refrigerator, and the two guide members 400 are provided at both ends of the sealing plate 300; the number of the guide mechanisms 500 is two, and the positions of the two guide mechanisms 500 correspond to the positions of the two guides 400.

The plurality of guide members 400 and the guide mechanism 500 corresponding to the plurality of guide members 400 one by one can lead the sealing plate 300 to bear uniform force everywhere when being driven to move, so that the movement of the sealing plate 300 is smoother. When the thermal insulation door is completely closed, the elastic force between the sealing plate 300 and the ground is transferred to the plurality of guide members 400 and the plurality of guide mechanisms 500, so that stress concentration is avoided, and the service life of the thermal insulation door is prolonged.

Alternatively, the guide 400 is provided at both ends of the sealing plate 300, and the guide mechanism 500 is provided at both side door frames 200 corresponding to the guide 400.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A thermal insulation door for a refrigerator, comprising:

the door body is movably connected with the door frame;

the sealing plate is movably arranged at the bottom of the door body and can move between a first position for being abutted against the ground to seal a gap between the door body and the ground and a second position for being separated from the ground;

a guide fixed to the sealing plate;

the guide mechanism is fixed on the door frame, and the fixed setting position of the guide mechanism is the position corresponding to the guide part when the door body is in a closed state, so that the guide mechanism and the guide plate are matched to drive the sealing plate to move;

and in the closing process of the heat preservation door, the guide part is displaced under the guide action of the guide mechanism, so that the sealing plate is driven to move from the second position to the first position to be tightly attached to the ground for realizing sealing.

2. The insulated door of claim 1, further comprising:

the sealing plate rotating shaft is rotatably arranged at the bottom of the door body along the width direction of the door body;

the sealing plate is rotationally connected to the sealing plate rotating shaft, and the heights of the sealing plate from the ground are different when the sealing plate rotates to different angles.

3. The insulated door as claimed in claim 2, wherein,

the guide mechanism comprises a first guide groove, and the end part of the first guide groove facing the outer side is provided with a guide opening;

the guide piece protrudes outwards from the sealing plate, and the guide part enters the first guide groove and moves along the first guide groove so as to drive the sealing part to rotate to a first position.

4. The insulated door as claimed in claim 2, wherein,

the guide piece comprises a second guide groove, and the end part facing the inner side is provided with a guide opening; the guide mechanism comprises a bump fixedly arranged;

and in the process of closing the door body into the door frame, the lug enters the second guide groove from the second opening and then drives the guide piece to move so as to enable the sealing plate to rotate.

5. The insulated door according to claim 3 or 4, wherein,

the first guide groove is arc-shaped.

6. The insulated door according to claim 3 or 4, wherein,

the gradient of the first guide groove gradually increases from outside to inside.

7. The insulated door of any one of claims 1 to 4, further comprising:

a return spring, one end of which is fixed to the door body and the other end of which is fixed to the sealing plate;

the initial state of the return spring is a state in which the sealing plate is in a second position away from the ground.

8. The insulated door according to any one of claims 1 to 4,

the bottom of the door body is provided with a hollow inner cavity, the bottom of the hollow inner cavity is open, and the sealing plate is arranged in the hollow inner cavity;

when the door body is in an open state, the sealing plate is received in the hollow inner cavity; when the door body is in a closed state, the sealing plate extends out of the hollow inner cavity and is tightly attached to the ground to realize sealing.

9. The insulated door of claim 8, wherein the door comprises a door body,

the sealing plate is pressed against the top wall of the hollow inner cavity when being positioned at the second position, so that the position of the sealing plate is limited, and the guide piece and the guide mechanism realize matched guide.

10. The insulated door according to any one of claims 1 to 4,

the number of the guide pieces is two, and the two guide pieces are arranged at two ends of the sealing plate;

the number of the guide mechanisms is two, and the positions of the two guide mechanisms correspond to the positions of the two guide pieces.

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