CN117628770A

CN117628770A - Refrigerator with a refrigerator body

Info

Publication number: CN117628770A
Application number: CN202210949302.8A
Authority: CN
Inventors: 兰传锋; 苗建林; 李春阳; 朱小兵
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2024-03-01
Also published as: WO2024032619A1

Abstract

A refrigerator, comprising: the box body, the drawer installed in said box body, the sliding rail assembly connecting said drawer and said box body, and the driving assembly used for driving the said sliding rail assembly to move; the driving assembly comprises a motor and a clutch transmission mechanism in transmission connection with the motor, the motor can drive the clutch transmission mechanism to be opened or closed, when the clutch transmission mechanism is in an opened state, the clutch transmission mechanism disconnects transmission between the motor and the sliding rail assembly, and when the clutch transmission mechanism is in a closed state, the motor is in transmission connection with the sliding rail assembly; the refrigerator further includes a control module for: when the drawer is opened or closed, the motor is controlled to drive the clutch mechanism to be opened.

Description

Refrigerator with a refrigerator body

Technical Field

The invention relates to the field of household appliances, in particular to a refrigerator.

Background

At present, the refrigerator is an indispensable household appliance in daily life, a part of the refrigerator is internally provided with a drawer or a pull-out door body, and the drawer and the pull-out door body are generally connected with the refrigerator body through a sliding rail assembly. Part of the refrigerators are provided with driving structures, and the sliding rail assemblies are automatically driven by the driving structures to realize automatic opening and closing of the drawers or the door bodies of the refrigerators. However, when the motor is automatically driven by a driving mechanism such as a motor, the flexibility of the user operation is reduced.

Disclosure of Invention

The invention aims to provide a refrigerator, and when a motor controls a drawer to be opened or closed, a clutch mechanism is controlled to be opened.

In order to achieve the above object, an embodiment of the present invention provides a refrigerator including: the box body, the drawer installed in said box body, the sliding rail assembly connecting said drawer and said box body, and the driving assembly used for driving the said sliding rail assembly to move;

the driving assembly comprises a motor and a clutch transmission mechanism in transmission connection with the motor, the motor can drive the clutch transmission mechanism to be opened or closed, when the clutch transmission mechanism is in an opened state, the clutch transmission mechanism disconnects transmission between the motor and the sliding rail assembly, and when the clutch transmission mechanism is in a closed state, the motor is in transmission connection with the sliding rail assembly; the refrigerator further includes a control module for: when the drawer is opened or closed, the motor is controlled to drive the clutch mechanism to be opened.

As a further improvement of an embodiment of the present invention, the clutch transmission mechanism includes an input gear, an output gear, and a connecting member; the input gear is provided with a linkage position and a clutch position relative to the connecting piece; the clutch transmission mechanism is opened at the clutch position, and the connecting piece disconnects transmission of the input gear and the output gear; in the linkage position, the input gear rotates towards the clutch position and can be switched to the clutch position, and the input gear rotates towards the clutch position to drive the connecting piece and the output gear to rotate so as to drive the drawer to open or close;

The control module is used for: when a drawer opening or closing signal is received, controlling the motor to drive the input gear to rotate towards a position deviating from the clutch position; when receiving a drawer opening or closing end signal, controlling the motor to reversely rotate to drive the input gear to switch to the clutch position.

As a further improvement of an embodiment of the present invention, the linkage position includes a first linkage position and a second linkage position, the clutch position is located between the first linkage position and the second linkage position, in the first linkage position, the motor rotates forward to drive the input gear to rotate along a first direction to drive the output gear to rotate to open the drawer, and in the second linkage position, the motor rotates reversely to drive the input gear to rotate along a second direction to drive the output gear to rotate to close the drawer.

As a further improvement of an embodiment of the present invention, the control module is configured to: when a drawer opening signal is received, the motor is controlled to rotate positively to drive the input gear to rotate along a first direction, and when a drawer opening stop signal is received, the motor is controlled to rotate reversely to drive the input gear to rotate relative to the connecting piece along a second direction to the clutch position.

As a further improvement of an embodiment of the present invention, the control module is configured to: when a drawer closing signal is received, the motor is controlled to rotate reversely, and the input gear is driven to rotate along the second direction.

As a further improvement of an embodiment of the present invention, the control module is configured to: when receiving a drawer closing end signal, the motor is controlled to rotate positively, and the input gear is driven to rotate from the second linkage position to the clutch position along a first direction relative to the connecting piece.

As a further improvement of an embodiment of the present invention, a cam track is provided on a surface of the connecting piece opposite to the input gear, the input gear is provided with a clutch protrusion engaged with the cam track, the cam track includes a first cam track and a second cam track which are symmetrically provided, an intersecting position of the first cam track and the second cam track forms the clutch position, two ends of the cam track form the first linkage position and the second linkage position respectively, the cam track is inclined from the clutch position to the first linkage position and the second linkage position, the connecting piece is further provided with a connecting rod, the output gear is provided with a connecting groove engaged with the connecting rod, the input gear rotates to drive the clutch protrusion to move in the cam track, and the connecting rod is driven to move axially so as to be engaged with or disengaged from the connecting groove, and when the clutch protrusion is in the clutch position, the connecting rod is disengaged from the connecting groove; when the clutch bulge is positioned at the linkage position, the connecting rod is matched with the connecting groove.

As a further improvement of an embodiment of the present invention, the clutch transmission mechanism further includes a photoelectric sensor disposed at one side of the connecting member, when the clutch transmission mechanism is switched between an open state and a closed state, a photoelectric signal of the photoelectric sensor changes, and the control module is configured to determine whether the input gear moves to the clutch position according to the photoelectric signal of the photoelectric sensor.

As a further improvement of an embodiment of the present invention, the control module is further configured to: when the motor rotates forward to drive the drawer to open, if the current of the motor is detected to rise, the motor is controlled to rotate reversely to drive the input gear to rotate to the clutch position along a second direction relative to the connecting piece.

As a further improvement of an embodiment of the present invention, the control module is further configured to: when the motor rotates forward to drive the drawer to open, pulse signals of the motor are obtained, and if the pulse signals of the motor are not detected within a preset time period, the motor is controlled to rotate reversely to drive the input gear to rotate to the clutch position along a second direction relative to the connecting piece.

The clutch transmission mechanism is arranged in the refrigerator driving assembly, the motor can control the clutch transmission mechanism to open and close and drive the sliding rail assembly to move, and after the drawer is opened or closed, the motor is controlled to drive the clutch transmission mechanism to open, so that a user can manually operate the drawer, and the use flexibility is improved.

Drawings

Fig. 1 is a perspective view illustrating a refrigerator according to an embodiment of the present invention;

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

FIG. 3 is a perspective view of the slide rail assembly of FIG. 1;

FIG. 4 is an exploded view of the slide assembly of FIG. 3;

FIG. 5 is a schematic diagram of a drive assembly according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of the input gear shown in FIG. 5;

FIG. 7 is a schematic view of the connector shown in FIG. 5;

FIG. 8 is a schematic view of the friction wheel shown in FIG. 5;

fig. 9 is a schematic view of the output gear shown in fig. 5.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodological, or functional modifications thereof by one of ordinary skill in the art are included within the scope of the present invention.

Referring to fig. 1, the present invention provides a refrigerator 100, the refrigerator 100 includes a case 110, a storage space formed in the case 110 includes a refrigerating compartment and a freezing compartment, a slide rail assembly 130 and a driving assembly 140 may be installed in the case 110, and the slide rail assembly 130 may be installed at a sidewall of the case 110. In this embodiment, the slide rail assembly 130 may be mounted to the side wall of the freezer compartment.

Referring to fig. 1 to 4, in an embodiment of the present invention, the sliding rail assembly 130 includes a fixed sliding rail 131 and a movable sliding rail, the fixed sliding rail 131 is fixedly mounted on a side wall of the case 110, the movable sliding rail is slidably connected with the fixed sliding rail 131, the movable sliding rail is provided with a drawer or a door body, and the driving assembly 140 is used for driving the movable sliding rail to move, and the movable sliding rail slides relative to the fixed sliding rail 131 to drive the drawer or the door body to open or close. The sidewall of the case 110 may be provided with a receiving groove 111, and the driving assembly 140 is fixedly installed in the case 110 and may be partially disposed in the receiving groove 111.

In the present embodiment, the side wall of the case 110 may be directly recessed to form the receiving groove 111. The housing 110 may include an outer shell and an inner liner, and a heat insulating material may be filled between the outer shell and the inner liner. The liner may be provided with an opening where the pre-buried box may be installed to form the receiving groove 111.

The driving component 140 is fixed inside the box 110 and does not move along with the moving slide rail, so that the whole structure is simple, and the driving component 140 is partially arranged in the accommodating groove 111 on the side wall of the box 110, so that the occupation of the driving component 140 to the inner space of the box 110 can be reduced.

Further, in an embodiment of the present invention, the driving assembly 140 includes a motor 143, a transmission mechanism and a driving gear 142, the motor 143 is connected with the transmission mechanism, the transmission mechanism is connected with the driving gear 142, and the motor 143 rotates to drive the transmission mechanism and further drive the driving gear 142 to rotate. The movable rail may be provided with a rack 134 engaged with a drive gear 142, the axis of the drive gear 142 being perpendicular to the sliding direction of the movable rail.

In the present embodiment, the rack 134 may be integrally formed with the movable rail, or the independent rack 134 may be attached to the movable rail by a fastener such as a screw. The front side close to the opening of the storage compartment is the rear side, the side far away from the opening of the storage compartment, the driving component 140 can be arranged on the side close to the opening of the storage compartment, the motor 143 can drive the driving gear 142 to rotate in the forward direction, the rack 134 and the movable sliding rail are driven to move forward, the drawer or the door body is driven to be opened, the motor 143 can drive the rack 134 and the movable sliding rail to move backward in the reverse direction, and the drawer or the door body is driven to be closed.

When the drawer or the door body is in a closed state, the driving assembly 140 can be positioned at the front side of the movable slide rail, and when the drawer or the door body is in an open state, the driving assembly 140 can be positioned at the rear side of the movable slide rail, so that the whole driving structure is simple and compact.

Further, in an embodiment of the present invention, the movable rail may include a first movable rail 132 and a second movable rail 133, and the rail assembly 130 further includes a synchronous transmission structure 150 in transmission connection with the first movable rail 132 and the second movable rail 133. The first movable sliding rail 132 can be arranged between the fixed sliding rail 131 and the second movable sliding rail 133, and is in sliding connection with the fixed sliding rail 131 and the second movable sliding rail 133, the rack 134 can be arranged on the first movable sliding rail 132, the second movable sliding rail 133 can be fixedly connected with the drawer or the door body, and the first movable sliding rail 132 can drive the synchronous transmission structure 150 to drive the second movable sliding rail 133 to move in the same direction, so that the drawer or the door body is driven to be opened or closed.

In the present embodiment, the synchronous transmission structure 150 may include a first belt pulley 151 and a second belt pulley 152 respectively mounted at two ends of the first movable rail 132, and a synchronous belt 153 engaged with the first belt pulley 151 and the second belt pulley 152, and two sides of the synchronous belt 153 may be fixedly connected with the fixed rail 131 and the second movable rail 133 respectively. The motor 143 drives the first moving rail 132 to move, drives the synchronous belt 153 to move, and further drives the second moving rail 133 to slide relative to the first moving rail 132, and the second moving rail 133 drives the drawer or the door body to open or close. The movement direction of the second movable sliding rail 133 is the same as the movement direction of the first movable sliding rail 132, so that the opening of the second movable sliding rail 133 can be increased, and the opening of the drawer or the door body can be increased, so that the food storage device is convenient for storing food.

In an embodiment of the present invention, the side walls of the case 110 include two opposite side walls, which may be a left side wall and a right side wall, the left side wall and the right side wall may be both provided with the sliding rail assembly 130, the driving assembly 140 may be disposed on one side wall, and the first movable sliding rails 132 of the two sliding rail assemblies 130 may be connected by a synchronization rod. The driving assembly 140 can drive the first movable rail 132 at one side to move, and drive the first movable rail 132 at the other side to move through the synchronizing rod.

The synchronizing rod may be disposed at the rear side of the drawer, and the synchronizing rod may be connected to the first belt wheel 151 of the two-side sliding rail assembly 130, and drives the two-side sliding rail assembly to move synchronously by driving the two-side belt wheel to move synchronously.

Thus, only one driving component 140 can be arranged in the box 110 to drive the sliding rail components 130 on two sides to move, the whole structure is simple, the opening degree of the drawer or the opening degree of the two sides of the door body is uniform, and the stress is balanced.

In another embodiment of the present invention, the left and right sides of the case 110 are provided with the slide rail assembly 130, the receiving groove 111, and the driving assembly 140. The driving assembly 140 of the left side wall may be installed in the receiving groove 111 of the left side wall and directly drive the sliding rail assembly 130 of the left side to move, and the driving assembly 140 of the right side wall may be installed in the receiving groove 111 of the right side wall and directly drive the sliding rail assembly 130 of the right side to move.

In this embodiment, the same slide rail assembly 130 and the same driving assembly 140 can be disposed on the left side wall and the right side wall at the same time, so that the stability of the overall structure is better. And the accommodating grooves 111 are formed on both sides, so that the occupation of the driving assembly 140 to the inner space can be reduced.

In an embodiment of the present invention, the refrigerator 100 further includes a mounting bracket 160 fixedly mounted on a sidewall of the case 110, and the fixed rail 131 and the driving assembly 140 may be fixedly connected to the mounting bracket 160. The movable rail may be mounted on the mounting bracket 160, and the fixed rail 131 may be integrally formed with the mounting bracket 160, or may be connected to the mounting bracket 160 by a fastener such as a bolt.

In the manufacturing process of the refrigerator 100, the fixed sliding rail 131, the movable sliding rail and the mounting bracket 160 can be preassembled into a whole, then the driving assembly 140 is mounted on the mounting bracket 160, and finally the mounting bracket 160 is mounted at a preset position in the refrigerator 100 body 110, so that the mounting can be completed, and the mounting process is rapid and convenient.

Further, in an embodiment of the present invention, the mounting bracket 160 includes a slide rail bracket 161 and a driving bracket 162 extending from the slide rail bracket 161, the driving bracket 162 may cover at least a portion of the receiving groove 111, and the driving assembly 140 may be fixedly connected to the driving bracket 162 and at least partially located between the driving bracket 162 and a sidewall of the case 110.

In this embodiment, the driving assembly 140 may include a driving case 141, the motor 143 and the transmission mechanism may be installed inside the driving case 141, and the driving gear 142 may be disposed outside the driving case 141. The driving case 141 and the driving gear 142 may be positioned at both sides of the driving bracket 162, and the driving case 141 may be positioned between the driving bracket 162 and the sidewall of the case 110 and at least partially disposed in the receiving groove 111.

The driving bracket 162 may entirely cover the opening of the receiving groove 111, or may cover a large portion of the opening of the receiving groove 111, and the driving bracket 162 may be provided with a shaft hole. The sliding rail support 161 can be provided with screw holes, and is connected to the side wall of the box 110 through screws, the driving box 141 can be connected to the driving support 162 through screws, a connecting shaft between the transmission mechanism and the driving gear 142 can pass through the shaft hole of the sliding rail support 161, and the driving gear 142 is directly meshed with the rack 134 of the first moving sliding rail 132 to drive the first moving sliding rail 132 to move.

Thus, the sliding rail assembly 130 and the driving assembly 140 are simultaneously installed through the installation support 160, the installation support 160 provides installation positions for the installation of the driving assembly 140, the number of screw holes arranged on the box body 110 can be reduced, the assembly is convenient, and the whole structure is simple and compact.

In one embodiment of the present invention, the refrigerator 100 further includes a drawer mount 170, the drawer mount 170 is fixedly connected to the second movable rail 133, the drawer is fixedly connected to the drawer mount 170, and the synchronous transmission structure 150 is located between the drawer mount 170 and a sidewall of the case 110. In this embodiment, the synchromesh 150 may be located between the drawer mount 170 and the mounting bracket 160, the drawer mount 170 being used to mount the drawer and may cover the slide assembly 130. A user may remove the drawer from the drawer mount 170 for cleaning, and the drawer mount 170 may cover internal structures, reducing exposure of internal components of the refrigerator 100.

Further, referring to fig. 5 to 9, in an embodiment of the present invention, the transmission mechanism includes a clutch transmission mechanism, an input end of the clutch transmission mechanism is in transmission connection with the motor 143, and an output end of the clutch transmission mechanism may be in transmission connection with the driving gear 142. The motor 143 may drive the clutch transmission on or off. When the clutch transmission mechanism is in an open state, the clutch transmission mechanism can disconnect the transmission between the motor 143 and the sliding rail assembly 130, and at this time, a user can manually push and pull the drawer without being blocked. When the clutch transmission mechanism is in a closed state, the motor 143 is in transmission connection with the sliding rail assembly 130, at the moment, the sliding rail assembly 130 can be directly driven to move through the motor 143, so that the drawer is driven to be opened and closed, and because the motor 143 is self-locked, a user often has difficulty in manually pushing and pulling the drawer.

The refrigerator 100 may further include a control module that may be used to receive a signal to open or close a drawer. The refrigerator 100 may be provided with an input module, such as a display screen or a voice input module, through which a user inputs a drawer opening instruction or a drawer closing instruction. Of course, it is also possible to determine whether the user has an intention to open or close the drawer by installing the hall sensor to detect the pulse signal of the motor 143, and generate a drawer opening or closing signal.

When the drawer is opened, the drawer can be opened to a preset position, the motor 143 can be controlled to brake, and the drawer can be opened to a preset position when other signals are received, and the motor 143 can be controlled to brake.

The drawer of the refrigerator 100 may be integrated with the door body, the sliding rail assembly 130 may simultaneously drive the drawer and the door body to move, the refrigerator 100 may further be provided with a door closing detection module, and the door closing detection module may be a pressure sensor, and when detecting that the door body of the refrigerator 100 is closed, may send a closing end signal to control the motor 143 to brake.

The control module may be used to control the motor 143 to drive the clutch transmission open when the drawer is either open or closed.

In this embodiment, when the drawer opening end signal or the closing end signal is received, the motor 143 may be controlled to brake first, and then the motor 143 is controlled to rotate reversely to drive the clutch transmission mechanism to open.

Therefore, when the drawer is in an open or closed position, the clutch transmission mechanism is in an open state, a user can randomly and manually operate the drawer, and even if the drawer is opened or closed, the drawer is not locked under the condition of power failure, so that the operation of the user is facilitated.

Further, in an embodiment of the present invention, the clutch transmission mechanism may include an input gear 181, an output gear 182, and a connecting member 183. The input gear 181 may form an input and be in driving connection with the motor 143 and the output gear 182 may form an output and be in driving connection with the drive gear 142. The output gear 182 may also directly form the drive gear 142. The output gear 182 may be directly provided with a gear in an integral structure, or may be fixedly connected with a gear in a split structure.

The input gear 181 may have a coupled position and a disengaged position 1845 relative to the connector 183, and when the input gear 181 is in the engaged position 1845 relative to the connector 183, the clutch transmission is open and the connector 183 disconnects the transmission between the input gear 181 and the output gear 182. When the input gear 181 is at the linkage position relative to the connecting piece 183, the rotation of the input gear 181 towards the clutch position 1845 can be switched to the clutch position 1845, and when the motor 143 drives the input gear 181 to rotate towards the clutch position 1845, the input gear 181 does not drive the connecting piece 183 and the output gear 182 to synchronously rotate, and if the input gear 181 rotates towards the direction deviating from the clutch position 1845, the input gear 181 can drive the connecting piece 183 and the output gear 182 to synchronously rotate, so as to drive the drawer to open or close.

In this embodiment, the control module is configured to: when receiving the drawer opening or closing signal, the motor 143 is controlled to drive the input gear 181 to rotate towards the clutch position 1845, at this time, the motor 143 can drive the input gear 181 to rotate relative to the connecting piece 183, so as to switch from the clutch position 1845 to the linkage position, and the motor 143 can continue to operate, so that the connecting piece 183 and the output gear 182 can be driven to rotate synchronously. When a drawer opening or closing signal is received, the motor 143 can be controlled to brake, and the motor 143 is controlled to rotate reversely, so that the input gear 181 is driven to be switched to the clutch position 1845, and the user can manually operate the drawer.

Further, in an embodiment of the present invention, the linkage positions may include a first linkage position 1843 and a second linkage position 1844, and the clutch position 1845 may be located between the first linkage position 1843 and the second linkage position 1844. When the input gear 181 is at the first linkage position 1843 relative to the connector 183, the motor 143 rotates forward to drive the input gear 181 to rotate along the first direction to drive the output gear 182 to rotate to open the drawer, and at this time, the motor 143 rotates backward to drive the input gear 181 to rotate along the second direction opposite to the first direction to drive the input gear 181 to move to the clutch position 1845 and the second linkage position 1844 in sequence. When the input gear 181 is at the second linkage position 1844 relative to the connector 183, the motor 143 rotates in reverse to drive the input gear 181 to rotate in the second direction to drive the output gear 182 to rotate to close the drawer, and the motor 143 rotates in forward to drive the input gear 181 to rotate in the first direction to drive the input gear 181 to move to the clutch position 1845 and the first linkage position 1843 sequentially.

In one embodiment of the present invention, the control module is configured to: when receiving a drawer opening signal, the control motor 143 rotates the input gear 181 in a first direction in a forward direction, and when receiving a drawer opening stop signal, the control motor 143 rotates in a reverse direction, and the drive input gear 181 rotates to a clutch position 1845 in a second direction relative to the connecting piece 183; when receiving the drawer closing signal, the control motor 143 is reversed to drive the input gear 181 to rotate in the second direction; when the drawer closing end signal is received, the control motor 143 rotates forward, driving the input gear 181 to rotate in the first direction from the second coupling position 1844 to the clutch position 1845 relative to the connector 183.

In this embodiment, during the process of opening the drawer driven by the motor 143, the input gear 181 may be at the first linkage position 1843 relative to the connector 183, when receiving the opening end signal, the motor 143 may be controlled to rotate reversely, the input gear 181 is driven to switch to the clutch position 1845, and when the input gear 181 moves to the clutch position 1845 along the second direction, the motor 143 may be controlled to stop, and at this time, the clutch transmission mechanism is in an open state, and the user may manually operate the drawer. When the drawer closing signal is received, the control module can control the motor 143 to continuously rotate reversely, drive the input gear 181 to continuously rotate along the second direction, the input gear 181 firstly rotates to the first linkage position 1843 relative to the connecting piece 183, then the motor 143 continuously rotates reversely, and the input gear 181 continuously rotates along the second direction and simultaneously drives the connecting piece 183 and the output gear 182 to rotate, so that the drawer is driven to be closed. When the drawer is closed, the motor 143 can be controlled to rotate forward again after braking is completed, and the input gear 181 is driven to move to the clutch position 1845 along the first direction and then stopped. When the drawer opening signal is received again, the control motor 143 rotates forward, firstly drives the input gear 181 to move to the first linkage position 1843, and then drives the input gear 181, the connecting piece 183 and the output gear 182 to rotate synchronously, so as to drive the drawer to open.

In this way, the input gear 181 can be driven to change at different positions relative to the connecting piece 183 by controlling the motor 143 to rotate forward or reversely, so that the clutch transmission mechanism is opened or closed by the motor 143 and the drawer is driven to be opened or closed, the whole structure is simple, and various requirements can be met.

Further, in an embodiment of the present invention, the output gear 182, the input gear 181 and the connecting member 183 of the clutch transmission mechanism may be coaxially disposed, the surface of the connecting member 183 opposite to the input gear 181 is provided with a cam track 184, the surface of the input gear 181 opposite to the connecting member 183 is provided with a clutch protrusion 1811 matching with the cam track 184, and the input gear 181 rotates relative to the connecting member 183 to drive the clutch protrusion 1811 to rotate in the cam track 184. The cam track 184 may include a first cam track 1841 and a second cam track 1842 that are symmetrically disposed. The intersection of the first and second cam tracks 1841, 1842 forms a clutch position 1845, and the two ends of the cam track 184 may form a first and second linked position 1843, 1844, with the cam track 184 being sloped from the clutch position 1845 to the first and second linked positions 1843, 1844. The connecting member 183 may be provided with a connecting rod 1831, the connecting rod 1831 may be disposed on a surface of the connecting member 183 opposite to the output gear 182, the output gear 182 may have a connecting slot 1821 engaged with the connecting rod 1831, and the input gear 181 drives the clutch protrusion 1811 to move in the cam track 184 to drive the connecting member 183 to move axially, so that the connecting rod 1831 is engaged with or disengaged from the connecting slot 1821.

When the input gear 181 rotates from the clutch position 1845 to the linkage position relative to the connecting piece 183, the connecting piece 183 can axially move towards one side of the output gear 182, the connecting rod 1831 can gradually extend into the connecting groove 1821 to be matched with the connecting groove 1821, and when the input gear 181 moves to the linkage position relative to the connecting piece 183, the connecting rod 1831 can be matched with the connecting groove 1821; when the input gear 181 rotates from the linkage position to the clutch position relative to the connecting piece 183, the connecting piece 183 can axially move towards the side far away from the output gear 182, the connecting rod 1831 can be gradually disengaged from the connecting groove 1821, and when the input gear 181 moves to the clutch position 1845 relative to the connecting piece 183, the connecting rod 1831 can be completely positioned outside the connecting groove 1821 and disengaged from the connecting groove 1821.

In the present embodiment, the direction in which the clutch protrusion 1811 rotates from the second linkage position 1844 to the first linkage position 1843 may be a first direction, and the direction in which the clutch protrusion 1811 rotates from the first linkage position 1843 to the second linkage position 1844 may be a second direction.

The output gear 182, the connecting piece 183, and the input gear 181 may be coaxially disposed in sequence. The connecting piece 183 may be disposed between the output gear 182 and the input gear 181, a spring 185 may be disposed between the connecting piece 183 and the output gear 182, two ends of the spring 185 may abut the connecting piece 183 and the output gear 182, and the clutch position 1845 may be closer to the output gear 182 than the first linkage position 1843 and the second linkage position 1844.

When the input gear 181 is in the engaged position 1845 relative to the connector 183, the spring 185 is releasable, the connector 183 is disengaged from the connecting slot 1821, and when the input gear 181 moves from the engaged position 1845 to the first or second linked position relative to the connector 183, the engaging protrusion 1811 moves along the cam track 1841 from the engaged position 1845 to the first or second linked position 1843, thereby driving the connector 183 to move axially toward the output gear 182, and the spring 185 compresses.

Specifically, after the input gear 181 rotates to the first linkage position 1843 toward the first direction relative to the connecting piece 183, the connecting rod 1831 extends into the connecting groove 1821 to cooperate with the connecting groove 1821, and the connecting rod 1831 is located at one end of the connecting groove 1821, the input gear 181 continues to rotate in the first direction, the clutch protrusion 1811 presses the side wall of the cam track 1841 at the first linkage position 1843 to drive the connecting piece 183 to synchronously rotate in the first direction, and meanwhile, the connecting rod 1831 presses the groove wall of the connecting groove 1821 to drive the output gear 182 to synchronously rotate in the first direction.

Similarly, after the input gear 181 rotates to the second linkage position 1844 toward the second direction relative to the connecting member 183, the connecting rod 1831 extends into the connecting slot 1821 to cooperate with the connecting slot 1821, and the connecting rod 1831 may be located at the other end of the connecting slot 1821, where the input gear 181 continues to rotate in the second direction, and the clutch protrusion 1811 presses the sidewall of the cam track 184 at the second linkage position 1844 to drive the connecting member 183 to synchronously rotate in the second direction, and meanwhile, the connecting rod 1831 presses the groove wall at the other end of the connecting slot 1821 to drive the output gear 182 to synchronously rotate in the second direction.

The clutch transmission mechanism can further comprise a friction wheel 186, the connecting piece 183, the input gear 181 and the output gear 182 can be sleeved on the shaft 1861 of the friction wheel, the shaft 1861 of the friction wheel 186 can be shaped, and the shaft hole 1831 in the connecting rod 183 can be identical to the shaft 1861. When the motor 143 drives the input gear 181 to move relative to the connecting member 183, the friction wheel 186 can limit the connecting member 183 to rotate under the driving of the input gear 181.

The invention also provides a clutch transmission mechanism of another embodiment. In this embodiment, the input gear may be disposed between the connection member and the output gear, the surface of the connection member opposite to the input gear may be simultaneously provided with the cam track and the connection rod, and the input gear may be provided with a long hole through which the connection rod passes. The clutch position within the cam track is closer to the output gear than the first and second linkage positions. The spring can be arranged between the connecting piece and the shell, when the connecting piece is in a clutch position, the spring is compressed, the connecting rod is separated from the connecting groove, transmission between the input gear and the output gear is disconnected, when the input gear rotates from the clutch position to the first linkage position or the second linkage position, the clutch bulge moves in the cam track to the first linkage position or the second linkage position, the spring is released, the connecting piece moves axially in the direction close to the input gear, the connecting rod is gradually inserted into the connecting groove, and the input gear can drive the output gear to synchronously move.

The clutch transmission mechanism is simple as a whole, the clutch transmission mechanism can be simply controlled to switch between an open state and a closed state through the movement of the motor 143, and when the user operates the drawer to open or close, the clutch transmission mechanism can be simply and rapidly operated to open so as to disconnect the transmission between the motor 143 and the sliding rail assembly 130.

Further, in an embodiment of the present invention, the clutch transmission further includes a photosensor 187 disposed at one side of the connection member 183, and when the clutch transmission is switched between the on state and the off state, a photoelectric signal of the photosensor changes, and at one of the clutch position 1845 and the linkage position, the connection member 183 blocks the photosensor 187, and at the other of the clutch position 1845 and the linkage position, the connection member 183 does not block the photosensor 187. Therefore, the control module may be configured to determine whether the input gear 181 moves to the clutch position 1845 according to the photoelectric signal of the photoelectric sensor 187, and when the input gear 181 is detected to move to the clutch position 1845 relative to the connector 183 during opening of the clutch transmission mechanism, the motor 143 may be controlled to brake, and the braking mode of the motor 143 may be dynamic braking.

In an embodiment of the present invention, a current detection module for detecting the current of the motor 143 may be further disposed in the refrigerator 100, and the control module is further configured to: when the motor 143 rotates forward to drive the drawer open, if an increase in current to the motor 143 is detected, the motor 143 is controlled to rotate the input gear 181 in a reverse direction relative to the connector 183 to the clutch position 1845.

In this embodiment, if the current of the motor 143 suddenly rises during the opening process of the drawer, the motor 143 is blocked, at this time, it may be determined that the drawer is blocked during operation, if an obstacle is encountered or the drawer has already been operated to a position expected by the user, the user may manually prevent the drawer from further operation, at this time, an opening end signal may be sent, the motor 143 is controlled to brake and then rotate reversely, and the input gear 181 is driven to rotate to a clutch position 1845 relative to the connector 183 to open the clutch transmission mechanism, so that the transmission between the input gear 181 and the output gear 182 is disconnected, and thus the user may manually operate the drawer.

In another embodiment of the present invention, the opening and closing direction of the drawer can be determined according to the pulse signal of the motor 143, and the control module is further configured to: when the motor 143 rotates forward to drive the drawer to open, a pulse signal of the motor 143 is obtained, and if the pulse signal of the motor 143 is not detected within a preset period of time, the motor 143 is controlled to rotate reversely to drive the input gear 181 to rotate to the clutch position 1845 along the second direction relative to the connector 183.

In this embodiment, if the period of the normal pulse signal is T, the preset duration may be 0.6-2T, and if no pulse signal change is detected within the preset duration, it may be determined that the drawer encounters a blockage or the user manually blocks the operation of the drawer, and at this time, a drawer opening end signal may be sent to control the clutch transmission mechanism to be opened.

Thus, in the process of opening the drawer, whether the drawer is blocked in the process of opening the drawer can be automatically judged according to the current of the motor 143 or the change of the pulse signal, and when the drawer is judged to be blocked, the motor 143 is controlled to brake and open the clutch transmission mechanism.

An embodiment of the present invention provides a method for controlling to open the clutch transmission mechanism, in this embodiment, the control module is further configured to: when the input gear 181 is in the first linkage position 1843 or the second linkage position 1844, if the clutch opening signal is received, the motor 143 is controlled to forward rotate the input gear 181 at a preset rotational speed to move from the second linkage position 1844 to the clutch position 1845, or to reverse rotate the input gear 181 at a preset rotational speed to move from the first linkage position 1843 to the clutch position 1845, wherein the preset rotational speed is less than the idle rotational speed of the motor 143.

In this embodiment, the control module may be subjected to an open clutch signal at the end of drawer opening or closing.

When the input gear 181 is driven to move relative to the connector 183 to the clutched position 1845, the motor 143 can be controlled to brake when the input gear 181 is detected to move to the clutched position 1845. However, when the motor 143 is controlled to brake, due to inertia problems, the input gear 181 is still driven to continue to move, and the greater the rotation speed of the motor 143, the longer the movement stroke of the input gear 181 is during braking. If the movement of the input gear 181 is too long, the final resting position of the input gear 181 may be caused to pass over the clutch position 1845, even directly from the first linkage position 1843 to the second linkage position 1844, or directly from the second linkage position 1844 to the first linkage position 1843.

Therefore, when the clutch opening signal is received, the motor 143 is controlled to operate at a speed less than the idle rotation speed of the motor 143, so that the operating distance in the braking process can be reduced, and the stability can be improved.

In one embodiment of the invention, the preset speed may be less than 90% of the idle speed of the motor 143. In this embodiment, the clutch position 1845 may be a section of area, rather than a point, and the clutch is opened by reasonable arrangement. The motor 143 can avoid the failure of clutch opening due to the rotating speed, and can also enable the input gear 181 to finally stay at a better position in the clutch opening process, so that the overall stability is improved.

In one embodiment of the present invention, the rotational speed of the motor 143 may be adjusted by controlling the operating voltage or duty cycle of the motor 143. The control may be specifically for: if the on-clutch signal is received, the operating voltage of the motor 143 is controlled to be less than the rated voltage of the motor 143 or the PWM duty cycle of the positive voltage terminal of the motor 143 is controlled to be reduced.

In this way, by controlling the operating voltage or duty cycle of the motor 143, the rotational speed of the motor 143 can be quickly and easily reduced, avoiding the input gear 181 exceeding a predetermined position during operation to the clutched position 1845.

Another embodiment of the present invention also provides another method of controlling the opening of a clutch mechanism.

In this embodiment, the control module is configured to: when the input gear 181 is at the linkage position, if the clutch opening signal is received, the control motor 143 drives the input gear 181 to rotate towards the clutch region; when it is detected that the input gear 181 enters the clutch region for a preset period of time, the motor 143 is controlled to brake.

In the present embodiment, the region where the first cam track 1841 and the second cam track 1842 intersect may form a clutch region, and the clutch region may have an optimal clutch position 1845 therein, and the optimal clutch position 1845 may be a central position of the clutch region. When the input gear 181 moves to enter the clutch region with respect to the connector 183, the connecting rod 1831 is disengaged from the connecting groove 1821, the transmission between the input gear 181 and the output gear 182 is disconnected, and both are in a transmission disconnected state when the input gear 181 is in the entire clutch region with respect to the connector 183.

In this embodiment, when it is detected that the input gear 181 enters the clutch area for a preset period of time, the motor 143 is controlled to brake, so that the motor 143 can be prevented from braking too early, and the input gear 181 cannot move to the optimal clutch position 1845, so that the clutch opening and closing state is unstable, such as the clutch protrusion 1811 falls back to the first linkage position 1843 or the second linkage position 1844 along the cam track 184.

The preset time period may be inversely related to the rotation speed of the motor 143 during the clutch opening process, and the higher the rotation speed of the motor 143 during the clutch opening process, the larger the stroke of the input gear 181 during the brake process, the smaller the preset time period may be, so that the overall stability may be improved.

In an embodiment of the present invention, the refrigerator 100 further includes a power storage module and a power supply detection device. The power storage module may be a battery for storing power and electrically connected to the motor 143. The power supply detection means may be used to detect whether a power supply signal of the refrigerator 100 is abnormal; the control module is also used for: when the power supply detection device detects that the power supply signal is abnormal, the power storage module is controlled to supply power to the motor 143, and the motor 143 is controlled to drive the clutch transmission mechanism to be opened.

In this embodiment, during normal operation of the refrigerator 100, the power storage module may be in a full state, and when an abnormality in the power supply signal is detected, power may be supplied to the motor 143 through the power storage module, and at this time, if the motor 143 is in the operation, the motor 143 may be controlled to brake first, and then the motor 143 is controlled to rotate in a reverse direction, so as to drive the clutch mechanism to open.

In this way, even if the refrigerator 100 is in use, the driving assembly 140 is not kept in the clutch-off state due to abnormal power supply, so that the user can continue to operate manually.

Further, in an embodiment of the present invention, the power supply detection device is configured to detect a voltage of a power supply of the refrigerator 100, and if the power supply voltage is less than a first preset value, send a power supply abnormality signal.

In this embodiment, the power supply detection device directly detects the voltage of the power supply source, such as the mains supply, of the refrigerator 100, and when detecting that the voltage drops to a preset value, such as 80% of the normal voltage, the power supply abnormality signal is fed back to control the power storage module to supply power to the motor 143.

In another embodiment of the present invention, the refrigerator 100 may further include a dc power supply module for converting ac power of a power supply of the refrigerator 100 into dc power and supplying the dc power to the motor 143. The dc power module may be integrated into the control board of the motor 143 or may be a separate module. The power supply detection device can be used for detecting the voltage of the power supply end of the direct current power supply module, and if the voltage of the power supply end is smaller than a second preset value, a power supply abnormality signal is sent.

In this way, it is possible to judge whether the power supply signal of the refrigerator 100 is abnormal by detecting the change in the voltage.

Further, in an embodiment of the present invention, when the drawer opening end signal or the closing end signal is received, the motor 143 is controlled to drive the clutch transmission mechanism to open, so that the control module may be used to: when the power supply abnormality signal is received, if the motor 143 is in an operating state, the power storage module is controlled to supply power to the motor 143.

In this embodiment, when the power supply abnormality signal is received, if the motor 143 is in an operating state, the drawer may be in a closed state during opening or closing of the drawer, or in a state during opening of the clutch transmission, so that the power storage module may be controlled to supply power to the motor 143. If the motor 143 is in the closed state, the drawer is at the closed position or has been opened in place, and the control module controls the clutch transmission mechanism to be opened after the closing or opening of the drawer is completed, the user can manually operate the clutch transmission mechanism, so that the power storage module does not need to be controlled to supply power to the motor 143 at this time.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.

Claims

1. A refrigerator, comprising: the box body, the drawer installed in said box body, the sliding rail assembly connecting said drawer and said box body, and the driving assembly used for driving the said sliding rail assembly to move;

the driving assembly is characterized by comprising a motor and a clutch transmission mechanism in transmission connection with the motor, wherein the motor can drive the clutch transmission mechanism to be opened or closed, when the clutch transmission mechanism is in an opened state, the clutch transmission mechanism disconnects transmission between the motor and the sliding rail assembly, and when the clutch transmission mechanism is in a closed state, the motor is in transmission connection with the sliding rail assembly; the refrigerator further includes a control module for: when the drawer is opened or closed, the motor is controlled to drive the clutch mechanism to be opened.

2. The refrigerator of claim 1, wherein the clutch transmission mechanism comprises an input gear, an output gear and a connecting piece; the input gear is provided with a linkage position and a clutch position relative to the connecting piece; the clutch transmission mechanism is opened at the clutch position, and the connecting piece disconnects transmission of the input gear and the output gear; in the linkage position, the input gear rotates towards the clutch position and can be switched to the clutch position, and the input gear rotates towards the clutch position to drive the connecting piece and the output gear to rotate so as to drive the drawer to open or close;

3. The refrigerator of claim 2, wherein the linkage position includes a first linkage position and a second linkage position, the clutch position being between the first linkage position and the second linkage position, the motor rotating in a forward direction driving the input gear to rotate in a first direction to open the drawer, and the motor rotating in a reverse direction driving the input gear to rotate in a second direction to close the drawer.

4. The refrigerator of claim 3, wherein the control module is configured to: when a drawer opening signal is received, the motor is controlled to rotate positively to drive the input gear to rotate along a first direction, and when a drawer opening stop signal is received, the motor is controlled to rotate reversely to drive the input gear to rotate relative to the connecting piece along a second direction to the clutch position.

5. The refrigerator of claim 4, wherein the control module is configured to: when a drawer closing signal is received, the motor is controlled to rotate reversely, and the input gear is driven to rotate along the second direction.

6. The refrigerator of claim 5, wherein the control module is configured to: when receiving a drawer closing end signal, the motor is controlled to rotate positively, and the input gear is driven to rotate from the second linkage position to the clutch position along a first direction relative to the connecting piece.

7. The refrigerator according to claim 3, wherein a cam track is arranged on a surface of the connecting piece opposite to the input gear, the input gear is provided with a clutch protrusion matched with the cam track, the cam track comprises a first cam track and a second cam track which are symmetrically arranged, the intersecting positions of the first cam track and the second cam track form the clutch position, the two ends of the cam track form the first linkage position and the second linkage position respectively, the cam track is inclined from the clutch position to the first linkage position and the second linkage position, the connecting piece is further provided with a connecting rod, the output gear is provided with a connecting groove matched with the connecting rod, the input gear rotates to drive the clutch protrusion to move in the cam track, and the connecting rod is driven to move axially so as to be matched with or be separated from the connecting groove, and when the clutch protrusion is in the clutch position, the connecting rod is separated from the connecting groove; when the clutch bulge is positioned at the linkage position, the connecting rod is matched with the connecting groove.

8. The refrigerator of claim 7, wherein the clutch transmission mechanism further comprises a photoelectric sensor arranged at one side of the connecting piece, a photoelectric signal of the photoelectric sensor changes when the clutch transmission mechanism is switched between an open state and a closed state, and the control module is used for judging whether the input gear moves to the clutch position according to the photoelectric signal of the photoelectric sensor.

9. The refrigerator of claim 4, wherein the control module is further configured to: when the motor rotates forward to drive the drawer to open, if the current of the motor is detected to rise, the motor is controlled to rotate reversely to drive the input gear to rotate to the clutch position along a second direction relative to the connecting piece.

10. The refrigerator of claim 4, wherein the control module is further configured to: when the motor rotates forward to drive the drawer to open, pulse signals of the motor are obtained, and if the pulse signals of the motor are not detected within a preset time period, the motor is controlled to rotate reversely to drive the input gear to rotate to the clutch position along a second direction relative to the connecting piece.