CN214498722U - Door opening and closing device and household appliance - Google Patents

Abstract

The utility model discloses a switch door gear and domestic appliance, the switch door gear includes: the door body comprises a base, a connecting piece, a sliding assembly, a screw rod and a driving piece, wherein the connecting piece is movably connected with the base and is used for connecting a door body; the sliding assembly is arranged on the base in a sliding mode along a first direction and is in transmission connection with the connecting piece so as to drive the connecting piece to move; the screw rod is in threaded transmission with the sliding assembly so as to convert the rotary motion of the screw rod into the sliding of the sliding assembly; the driving piece is connected with the screw rod and drives the screw rod to rotate. According to the utility model discloses switch door gear can realize automatic switch door.

Description

Door opening and closing device and household appliance

Technical Field

The utility model relates to the technical field of household appliances, in particular to door opening and closing device and household appliance who has this door opening and closing device.

Background

In cooking equipment, a hinge structure is generally adopted to realize opening and closing of a door body, the hinge structure in the related art reduces the force for manually opening and closing the door by matching the weight of the door body through a spring, but the hinge structure in the related art cannot realize the function of automatically opening and closing the door.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an open and close door gear can realize automatic switch door.

Another object of the present invention is to provide a household appliance.

According to the utility model discloses door opening and closing device, include: the door body comprises a base, a connecting piece, a sliding assembly, a screw rod and a driving piece, wherein the connecting piece is movably connected with the base and is used for connecting a door body; the sliding assembly is arranged on the base in a sliding mode along a first direction and is in transmission connection with the connecting piece so as to drive the connecting piece to move; the screw rod is in threaded transmission with the sliding assembly so as to convert the rotary motion of the screw rod into the sliding of the sliding assembly; the driving piece is connected with the screw rod and drives the screw rod to rotate.

According to the utility model discloses switch door gear can realize automatic switch door.

In addition, according to the utility model discloses the switch door gear of above-mentioned embodiment can also have following additional technical characterstic:

optionally, the base extends along a first direction, the base includes a top wall, a first side wall and a second side wall, the first side wall and the second side wall are respectively connected to opposite sides of the top wall along a second direction, the first side wall and the second side wall are opposite to each other in the second direction, and at least a portion of the sliding component is limited between the first side wall and the second side wall.

Optionally, a first guide groove extending along the first direction is formed in the top wall, a first guide block extending along the first direction is arranged on the sliding assembly, and the first guide block is slidably embedded in the first guide groove along the first direction.

Optionally, a first guide structure is disposed on the first side wall and the second side wall, a second guide structure is disposed on the sliding assembly, one of the first guide structure and the second guide structure is a first sliding groove extending along a first direction, the other of the first guide structure and the second guide structure is a first guide pillar slidably embedded in the first sliding groove along the first direction, the first guide pillar extends along a second direction, and two ends of the first guide pillar extend out of the first side wall and the second side wall and are provided with flanges.

Optionally, the edge of the first side wall is provided with a first flange, the edge of the second side wall is provided with a second flange, the first flange and the second flange extend in opposite directions, the sliding assembly is provided with a second guide block which is arranged along the first direction, and the second guide block is slidably embedded between the first flange and the second flange.

Optionally, the sliding assembly includes a first portion and a second portion, the first portion is disposed on an outer side of the top wall, the second portion is disposed between the first side wall and the second side wall and connected to the first portion, the first portion is provided with a first boss and a second boss opposite to each other in the second direction, a second guide groove extending in the first direction is configured between the first boss and the second boss, and the top wall is slidably embedded in the second guide groove in the first direction relative to the sliding assembly.

Optionally, a positioning groove is formed in the first portion, one side of the top wall of the positioning groove is open, a part of the second portion penetrates through the top wall and extends into the positioning groove, and the part of the second portion extending into the positioning groove is in pin connection with the first portion.

Optionally, the sliding assembly comprises: the sliding block is arranged on the base in a sliding mode along the first direction; the shaft sleeve is fixedly connected with the sliding block and in threaded transmission with the screw rod.

Optionally, the slider extends along the first direction, be equipped with the hole of stepping down that extends along the first direction in the slider, the axle sleeve includes sleeve and flange, the sleeve inlays to be located it is downthehole to step down, flange fixed connection in the tip along the first direction on the slider, the internal diameter in hole of stepping down is greater than the lead screw external diameter.

Optionally, the base is provided with at least one limit switch, the sliding assembly includes a first trigger portion adapted to trigger the limit switch, and the limit switch is in signal transmission with the driving member to limit the sliding assembly.

Optionally, the door opening and closing device further includes a spring, the spring is disposed between the sliding assembly and the driving member, and the spring is disposed outside the screw rod and extends spirally along the extending direction of the screw rod.

Optionally, the connecting piece with the base is articulated, the door opening and closing device further comprises a push rod, one end of the push rod is articulated with the connecting piece, and the other end of the push rod is articulated with the sliding assembly.

Optionally, the door opening and closing device further comprises a roller, the roller is movably arranged on the base along a first direction, the roller movably abuts against the edge of the connecting piece between a limiting position and a releasing position, a limiting notch is formed in the connecting piece, and the roller is embedded into the limiting notch at the limiting position.

Optionally, the door opening and closing device further includes a locking member, the locking member is disposed on the base to lock and release the driving member, the locking member locks the driving member, and the driving member is fixed relative to the base, and the locking member releases the driving member, and the driving member is movable relative to the base.

Optionally, the driving member includes a hook, the locking member includes a lock rod and a reset member, the lock rod is movably connected to the base between a locking position and a releasing position, the lock rod is suitable for being clamped and matched with the hook at the locking position to position the driving member, and the lock rod is suitable for being separated from the hook at the releasing position; the reset member normally drives the lock lever to move to the lock position.

Optionally, a travel switch is arranged on the driving element, a second touch part is arranged on the base, and the travel switch is configured to be triggered when the driving element is locked by the locking element.

According to the utility model discloses domestic appliance, include: the door comprises a machine body, a door body and a door opening and closing device, wherein a cavity is formed in the machine body; the door body is arranged on the machine body and is suitable for opening and closing the cavity; the door opening and closing device is based on the door opening and closing device, the base is installed on the machine body, and the connecting piece is connected with the door body.

Drawings

Fig. 1 is a schematic view of a door opening and closing apparatus according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of a door opening and closing device according to an embodiment of the present invention.

Fig. 3 is an exploded view of a door opening and closing device according to an embodiment of the present invention.

Fig. 4 is a sectional view of an opening/closing door device according to an embodiment of the present invention.

Fig. 5 is an exploded view of a door opening and closing device according to an embodiment of the present invention.

Fig. 6 is a schematic view of a door opening and closing device according to another embodiment of the present invention.

Fig. 7 is an exploded view of a door opening and closing apparatus according to another embodiment of the present invention.

Fig. 8 is an exploded view of a door opening and closing device according to another embodiment of the present invention.

Fig. 9 is a sectional view of a door opening and closing device according to another embodiment of the present invention.

Reference numerals:

the door opening and closing device 100 comprises a base 1, a top wall 11, a first side wall 12, a second side wall 13, a first flange 121, a second flange 131, a first guide groove 101, a first sliding groove 102, a second touch part 103, a first boss 104, a second boss 105, a connecting piece 2, a limit notch 201, a sliding assembly 3, a first part 31, a sliding block 311, a shaft sleeve 312, a sleeve 3121, a flange 3122, a second part 32, a first guide block 301, a first guide pillar 302, a second guide block 303, a positioning block 331, a pin shaft 332, a first insertion hole 305, a second insertion hole 306, a first touch part 34, a screw rod 4, a driving piece 5, a motor 51, a motor support 52, a clamping hook 53, a travel switch 54, a limit switch 14, a spring 15, a push rod 6, a roller 7, a locking piece 8 and a locking rod 81.

Detailed Description

Among the domestic appliance of correlation technique, the hinge structure of general adoption uses the spring to match a body weight and reduces the dynamics of manual switch door, but the hinge structure among the correlation technique can't realize the function of automatic switch door, for this reason the utility model provides a can the door opener of automatic switch door.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1 to 9, a door opening and closing device 100 according to an embodiment of the present invention includes: the device comprises a base 1, a connecting piece 2, a sliding assembly 3, a screw rod 4 and a driving piece 5. Wherein, base 1 is used for providing the support to other components, and connecting piece 2 is used for connecting a body, that is to say, can drive the body switch through drive connecting piece 2, and sliding assembly 3 and lead screw 4 combination are in order to convert the rotary motion of lead screw 4 into the slip of sliding assembly 3 to drive connecting piece 2 through sliding assembly 3 and remove, driving piece 5 is used for providing power. Wherein, the utility model discloses a door opening and closing device 100 can be applied to the various occasions that need realize the automatic switch door, and door opening and closing device 100 can be applied to cooking equipment, refrigerator, washing machine etc. for example.

Specifically, the link 2 is movably connected to the base 1, and the link 2 is used to connect the door body. The sliding component 3 is slidably arranged on the base 1 along a first direction, and the sliding component 3 is in transmission connection with the connecting piece 2 to drive the connecting piece 2 to move. The screw rod 4 is in threaded transmission with the sliding component 3 so as to convert the rotary motion of the screw rod 4 into the sliding motion of the sliding component 3. The driving piece 5 is connected with the screw rod 4, and the driving piece 5 drives the screw rod 4 to rotate. The driving piece 5 drives the screw rod 4 to rotate forwards and reversely, the sliding assembly 3 can be driven to stretch and retract relative to the screw rod 4 along the first direction, and power is transmitted to the connecting piece 2, so that the door body connected with the connecting piece 2 is driven to be opened and closed.

According to the utility model discloses switch door gear 100 through 4 transmission power of lead screw, can realize opening the door and close under the drive effect of driving piece 5 to can realize the automatic switch door, make switch door gear 100 more intelligent and facilitate the use, it is more laborsaving.

It should be noted that, in the present invention, the connecting member 2 can be connected to the base 1 in a translational or rotational manner, in other words, the connecting member 2 can be movably connected to the base 1, including but not limited to: the connecting piece 2 is rotatably connected with the base 1 (a hinge type opening and closing door); or the connecting piece 2 can be connected with the base 1 in a translation way (drawer type opening and closing door); or the link 2 may be translatably and rotatably connected to the base 1 (may perform a combined rotational and translational motion).

The utility model provides a sliding component 3 can set to support to the slidable on base 1, also can provide spacing and direction to sliding component 3's slip through other limit structure, improves the stability of sliding component 3 slip in-process. Wherein, the first direction in the utility model can be the fore-and-aft direction that the drawing shows, the second direction that mentions hereafter can be the left right direction that the drawing shows, and the third direction can be the upper and lower direction that shows in the drawing, of course, the utility model discloses in the description of first direction, second direction and third direction mainly is based on the scheme that the drawing gave, does not mean that the actual position of switch door gear 100 in the utility model is limited to this only, the above-mentioned description to the aspect is mainly for the convenience understanding the technical scheme of this application, does not regard as the restriction to the protection scope of the utility model.

Optionally, with reference to fig. 1 to 9, in some embodiments of the present invention, the base 1 extends along a first direction, the base 1 includes a top wall 11, a first side wall 12 and a second side wall 13, the first side wall 12 and the second side wall 13 are respectively connected to opposite sides of the top wall 11 along a second direction, the first side wall 12 and the second side wall 13 are opposite in the second direction, at least a portion of the sliding component 3 is limited between the first side wall 12 and the second side wall 13, in other words, with reference to fig. 1 to 5, the whole of the sliding component 3 is disposed between the first side wall 12 and the second side wall 13, that is, the whole of the sliding component 3 is disposed inside the base 1; or, in conjunction with fig. 6 to 9, a part of the sliding assembly 3 is disposed outside the base 1, and another part of the sliding assembly 3 is disposed inside the base 1. Can provide the direction to the slip of sliding component 3, improved the gliding stability of sliding component 3 effectively, improve the stability of opening and closing door device 100 to the use of door device 100 of convenient opening and closing.

Specifically, with reference to fig. 1 to 9, the top wall 11, the first side wall 12, and the second side wall 13 each extend in the front-rear direction, the first side wall 12 and the second side wall 13 respectively connect the left and right sides of the top wall 11, and the first side wall 12 and the second side wall 13 each extend downward with respect to the top wall 11, and at least a portion of the slide assembly 3 is disposed between the first side wall 12 and the second side wall 13.

In addition, in order to further improve the stability of sliding assembly 3 slip in-process, the utility model discloses in set up guide structure on base 1 and sliding assembly 3, can guide sliding assembly 3 along base 1's slip through guide structure, improved sliding assembly 3 slip in-process's stability.

Optionally, the top wall 11 is provided with a first guide groove 101 extending along a first direction, the sliding assembly 3 is provided with a first guide block 301 extending along the first direction, and the first guide block 301 is slidably embedded in the first guide groove 101 along the first direction. Through the cooperation of first guide block 301 and first guide slot 101, can realize the stable slip of sliding assembly 3, improve the stability of opening and shutting door device 100.

Wherein, the utility model provides a first guide block 301 and first guide slot 101 can be transition fit's form, that is to say, first guide block 301 has less predetermined clearance (for example 0.1 millimeter to 5 millimeters etc.) along the relative both sides border of second direction with first guide slot 101 respectively along the both sides surface of second direction to make first guide slot 101 provide the guide effect for first guide block 301, improved first guide block 301 along the gliding stability of first guide slot 101 effectively, thereby improved the gliding stability of sliding component 3 effectively.

Optionally, a first guiding structure is disposed on the first side wall 12 and the second side wall 13, a second guiding structure is disposed on the sliding assembly 3, one of the first guiding structure and the second guiding structure is a first sliding groove 102 extending along the first direction, and the other of the first guiding structure and the second guiding structure is a first guide pillar 302 slidably embedded in the first sliding groove 102 along the first direction, so that the sliding assembly 3 can be stably mounted on the base 1 through the first guide pillar 302, and the stability of the sliding assembly 3 during sliding can be improved.

Specifically, the first sliding slot 102 may be disposed on the first side wall 12 and the second side wall 13, the first guide pillar 302 is connected to the sliding assembly 3, two ends of the first guide pillar 302 are connected to the first side wall 12 and the second side wall 13, two ends of the first guide pillar 302 are respectively embedded in the first sliding slot 102 on the first side wall 12 and the first sliding slot 102 on the second side wall 13, and the first guide pillar 302 is slidable in the first direction relative to the first sliding slot 102; or, a first guide post 302 is disposed on the first side wall 12 and the second side wall 13, a first sliding slot 102 is disposed on the sliding assembly 3, two ends of the first guide post 302 are respectively connected to the first side wall 12 and the second side wall 13, the first guide post 302 passes through the first sliding slot 102, and the first guide post 302 is slidable along the first sliding slot 102 relative to the sliding assembly 3; or the utility model can also be a combination of the above schemes. Of course, the above description is only some specific descriptions of the present invention, which is used for explaining the technical solutions of the present invention in detail to facilitate the understanding of the technical solutions of the present invention, but not to be construed as limiting the scope of the present invention. For example, the first sliding slot 102 may be disposed on each of the first side wall 12, the second side wall 13 and the sliding assembly 3, the first guide pillar 302 is disposed to penetrate the first side wall 12, the sliding assembly 3 and the second side wall 13, and the first guide pillar 302 is slidable relative to the first sliding slot 102 on the first side wall 12, the first sliding slot 102 on the second side wall 13 and the first sliding slot 102 on the sliding assembly 3.

Optionally, the first guide pillar 302 extends along the second direction, the first guide pillar 302 penetrates through the sliding assembly 3, two ends of the first guide pillar 302 respectively extend out of the first side wall 12 and the second side wall 13, and flanges are disposed at ends of the first guide pillar 302 extending out of the first side wall 12 and the second side wall 13, so that stable limiting of the first guide pillar 302 on the first side wall 12 and the second side wall 13 can be achieved, thereby effectively improving the sliding stability of the sliding assembly 3, and thus improving the stability of the door opening and closing device 100.

Of course, the present invention can also position the first guide post 302 by other structures, for example, connecting nuts and the like at two ends of the first guide post 302, so that the first guide post 302 is fixed relative to the base 1 along the second direction.

Optionally, a first flange 121 is disposed on an edge of the first sidewall 12 (refer to a lower edge of the first sidewall 12 in the drawing), a second flange 131 is disposed on an edge of the second sidewall 13 (refer to a lower edge of the second sidewall 13 in the drawing), the first flange 121 and the second flange 131 extend in opposite directions, a second guide block 303 is disposed on the sliding component 3 along the first direction, the second guide block 303 is slidably embedded between the first flange 121 and the second flange 131, wherein, the first flange 121 and the second flange 131 can play a role of supporting the sliding component 3, and a third guide groove can be formed between the first flange 121 and the second flange 131, the second guide block 303 can be slidably inserted into the third guide groove along the first direction, stable sliding of the sliding member 3 in the first direction can be achieved, thereby further improving the stability of the sliding process of the sliding member 3.

Optionally, in an embodiment of the present invention, the whole structure of the sliding component 3 is disposed inside the base 1, and at this time, the driving component 5 can be disposed inside the base 1, so as to reduce the occupied space of the door opening and closing device 100, and improve the stability and structural strength of the door opening and closing device 100.

Alternatively, with reference to fig. 6 to 9, in another embodiment of the present invention, the sliding assembly 3 includes a first portion 31 and a second portion 32, the first portion 31 is disposed outside the top wall 11, and the second portion 32 is disposed between the first side wall 12 and the second side wall 13 and connects the first portion 31. The sliding of the sliding assembly 3 along the first direction can be guided by the second portion 32 disposed between the first side wall 12 and the second side wall 13, so that the stability of the sliding assembly 3 sliding along the first direction is effectively improved, and the stability of the door opening and closing device 100 is improved, and the use is convenient.

In addition, the first portion 31 is provided with a first boss 104 and a second boss 105 opposite to each other in the second direction, a second guide groove extending in the first direction is configured between the first boss 104 and the second boss 105, and the top wall 11 is slidably embedded in the second guide groove in the first direction relative to the sliding assembly 3, that is, referring to the attached drawings, the upper portion of the top wall 11 is slidably embedded in the second guide groove in the first direction, so that the stability of the first portion 31 sliding in the first direction can be effectively improved.

In addition, in combination with the foregoing embodiment, the second portion 32 is slidably provided inside the base 1 along the first direction stably by the structures of the first guide block 301, the second guide block 303 and/or the first guide post 302, so that the first portion 31 can be slidably provided along the first direction stably, and in combination with the first boss 104 and the second boss 105, the stability of the sliding assembly 3 sliding along the first direction can be further effectively improved, and the connection strength between the sliding assembly 3 and the base 1 can be improved.

Optionally, the first portion 31 is provided with a positioning groove, the positioning groove is open towards one side of the top wall 11 (referring to the lower side of the positioning groove in the drawing), a part of the second portion 32 penetrates out of the top wall 11 and extends into the positioning groove, and the part of the second portion 32 extending into the positioning groove is in pin connection with the first portion 31, so that the first portion 31 and the second portion 32 are stably and quickly connected, and the connection strength and stability of the door opening and closing device 100 are improved.

The sliding assembly 3 may further include a positioning block 331 and at least one pin 332, the pin 332 is connected to the positioning block 331, the pin 332 extends in a direction perpendicular to the positioning block 331, the first portion 31 is provided with a first insertion hole 305, a portion of the second portion 32 embedded in the first portion 31 is provided with a second insertion hole 306, the first insertion hole 305 is aligned with the second insertion hole 306, the positioning block 331 may be installed on an outer surface of the first portion 31, and the pin 332 penetrates through the first insertion hole 305 and the second insertion hole 306, so as to achieve the pin connection between the first portion 31 and the second portion 32.

In addition, in the present invention, a positioning groove may be further disposed on the second portion 32, and the first portion 31 is inserted into the positioning hole, so that the first portion 31 and the second portion 32 can be stably connected. Of course, the first portion 31 and the second portion 32 may also be connected by other connection methods, such as bolt connection, screw connection, etc.

Alternatively, the first portion 31 of the present invention may be screw-driven with the screw rod 4, and the second portion 32 may be provided in a sheet shape, so as to facilitate molding of the first portion 31 and the second portion 32, and to facilitate assembling of the first portion 31 and the second portion 32, thereby simplifying the structure of the door opening and closing apparatus 100, and improving the stability of the door opening and closing apparatus 100.

Optionally, in some embodiments of the present invention, the sliding assembly 3 comprises: the sliding block 311 and the shaft sleeve 312, the sliding block 311 is slidably arranged on the base 1 along a first direction; the shaft sleeve 312 is fixedly connected with the slide block 311, and the shaft sleeve 312 is in threaded transmission with the screw rod 4. Through setting up slider 311 and axle sleeve 312, can simplify the structure of sliding component 3, slider 311 and axle sleeve 312 can be for the form of assembling together after the independent shaping to simplified the forming process of sliding component 3, improved the shaping efficiency of sliding component 3, and improved the stability of sliding component 3.

Wherein, axle sleeve 312 can be installed on slider 311 through modes such as interference fit, screw connection, bolted connection, bonding, welding, of course the utility model discloses mainly be suitable for axle sleeve 312 and slider 311 components of a whole that can function independently shaping to explain for the example, but this can not be understood as right the utility model discloses protection scope's restriction, the utility model provides an axle sleeve 312 and slider 311 also can be integrated into one piece's form.

Optionally, the slider 311 extends along the first direction, a yielding hole extending along the first direction is formed in the slider 311, the shaft sleeve 312 comprises a sleeve 3121 and a flange 3122, the sleeve 3121 is embedded in the yielding hole, the flange 3122 is fixedly connected to the end portion of the slider 311 along the first direction, and the inner diameter of the yielding hole is greater than the outer diameter of the screw rod 4. Therefore, in the process that the screw rod 4 extends and retracts along the shaft sleeve 312, as the inner diameter of the yielding hole is larger than the outer diameter of the screw rod 4, the inner peripheral surface of the yielding hole cannot influence the rotation of the screw rod 4, the translation relative to the sliding block 311 and the like, the stable transmission between the screw rod 4 and the sliding assembly 3 is facilitated, and the stability of the power transmission between the sliding assembly 3 and the screw rod 4 is effectively improved.

Optionally, at least one limit switch 14 is disposed on the base 1, the sliding assembly 3 includes a first trigger portion 34 adapted to trigger the limit switch 14, and the limit switch 14 is in signal transmission with the driving member 5 to limit the sliding assembly 3. That is, during the sliding process of the sliding assembly 3, the first touching portion 34 on the sliding assembly 3 triggers the limit switch 14, so as to indicate the position of the sliding assembly 3 relative to the base 1, so as to operate the driving member 5 in time, achieve stable positioning and precise control of the sliding assembly 3, and effectively improve the stability of the door opening and closing device 100.

Optionally, the base 1 of the present invention may be provided with a limit switch 14, so that during the sliding process of the sliding assembly 3, the position of the sliding assembly 3 may be indicated, so as to determine the position of the door body, for example, when the door body is completely opened, the limit switch 14 is in a triggered state; and/or the position switch 14 is in a triggered state when the door body is completely closed. In addition, two limit switches 14 may be provided on the base 1, for example, different limit switches 14 may be triggered when the door body is fully opened and fully closed, respectively. Of course, it is also possible to provide only one limit switch 14, and to provide two first triggers 34 to achieve feedback on the current position of the sliding assembly 3.

Of course, the above-mentioned restriction to limit switch 14, first trigger 34 quantity of the utility model discloses a just some embodiments are not right the utility model discloses a protection scope's restriction, according to the operation requirement of difference (for example, need carry out the feedback to a plurality of positions of sliding component 3), can correspond the setting to first trigger 34, limit switch 14's setting position and quantity.

Optionally, the door opening and closing device 100 further comprises a spring 15, the spring 15 is disposed between the sliding assembly 3 and the driving member 5, and the spring 15 is disposed outside the screw rod 4 and extends spirally along the extending direction of the screw rod 4. Through setting up spring 15, can play the effect of holding power and release, improve the stability of the in-process of opening and shutting effectively.

Specifically, in the door closing process, the screw rod 4 drives the sliding assembly 3 to retract, at the moment, the sliding assembly 3 compresses the spring 15, the spring 15 is stored with force, when the door needs to be opened, the screw rod 4 drives the sliding assembly 3 to extend, and at the moment, the spring 15 is stored with force and released, so that the stability in the door opening and closing process is effectively improved, the door closing process is prevented from generating loud sound, and the noise is reduced.

Optionally, the connecting member 2 is hinged to the base 1, the door opening and closing device 100 further includes a push rod 6, one end of the push rod 6 is hinged to the connecting member 2, and the other end of the push rod 6 is hinged to the sliding assembly 3. Through the transmission of push rod 6, even produce small deviation in the slip process of sliding component 3, also can realize sliding component 3 connecting piece 2 steadily, improved the fault-tolerant rate of the switch door gear 100 of this application, and then improve the stability of switch door gear 100.

Optionally, the door opening and closing device 100 further includes a roller 7, the roller 7 is movably disposed on the base 1 along the first direction, the roller 7 movably abuts against the edge of the connecting member 2 between the limiting position and the releasing position, wherein the connecting member 2 is provided with a limiting notch 201, and the roller 7 is embedded into the limiting notch 201 at the limiting position. Wherein, when gyro wheel 7 is embedded into spacing breach 201, can carry on spacingly through gyro wheel 7 to connecting piece 2, so the door body that is but can stably maintain at current state, improve switch door gear 100's stability effectively, and under the effect of the drive power of driving piece 5 or other external forces, gyro wheel 7 breaks away from spacing breach 201, thereby release gyro wheel 7 is to the limiting displacement of connecting piece 2, make connecting piece 2 can remove fast, thereby when guaranteeing the door body at preset position stability, can make switch door gear 100 laborsaving at the switch door in-process.

The door opening and closing device 100 of the present invention is used for driving the opening and closing of the door body, wherein when the door body is opened, the connecting member 2 connected to the door body can be in the door opening position; when the door body is closed, the connecting piece 2 connected with the door body can be in a door closing position. The utility model discloses in can set to, when connecting piece 2 is in the position of closing the door, gyro wheel 7 is absorbed in spacing breach 201 in order to carry on spacingly to connecting piece 2 to can maintain the closed condition of the door body steadily. When being applied to cooking equipment with this door opening and closing device 100, can play the heat preservation effect, energy-concerving and environment-protective, especially when being applied to microwave oven with this door opening and closing device 100, maintain the state of closing the door of the door body, can avoid the microwave to reveal, improve microwave oven's stability and security.

In addition, in some embodiments of the present invention, the driving member 5 is fixedly disposed on the base 1, and in other embodiments of the present invention, the driving member 5 can be disposed in a movable manner, so that the door can be opened and closed by external force when the driving member 5 is movable.

Optionally, in some embodiments of the present invention, the door opening and closing device 100 further comprises a locking member 8, the locking member 8 is disposed on the base 1 to lock and release the driving member 5, the locking member 8 locks the driving member 5 so that the driving member 5 is fixed relative to the base 1, the locking member 8 releases the driving member 5 so that the driving member 5 is movable relative to the base 1, so that the driving member 5 can be locked by the locking member 8, and thus, the automatic opening and closing of the door can be realized by the driving action of the driving member 5, when the driving member 5 is unlocked by the locking member 8, the driving member 5 can be movably arranged on the base 1, and at this time, the door can be manually opened and closed, thereby at the locking of locking piece 8 and the switching of release, can realize switching door gear 100 between automatic switch door and manual switch door, thereby expand the utility model discloses a door gear 100's function and performance.

Optionally, the driving member 5 includes a hook 53, the locking member 8 includes a lock rod 81 and a reset member, the lock rod 81 is movably connected to the base 1 between a locking position and a releasing position, the lock rod 81 is suitable for being in clamping fit with the hook 53 to position the driving member 5 in the locking position, and the lock rod 81 is suitable for being separated from the hook 53 in the releasing position; the reset member always drives the lock lever 81 to move to the lock position.

According to the utility model discloses door opener still includes locking piece 8. The driving member 5 is movably disposed on the base 1, that is, the driving member 5 is non-fixed relative to the base 1, and can move according to a predetermined track or not. 8 locking driving piece of locking piece 5 then driving piece 5 is fixed for base 1, at this moment, need not the artificial door body that opens and shuts that goes, driving piece 5 can drive connecting piece 2 and go the door body that opens and shuts, 8 locking piece release driving piece 5 then driving piece 5 is portable for base 1 relatively, when 8 locking pieces release driving piece 5 for driving piece 5 can remove for base 1, the user can manually go the door body that opens and shuts this moment, the automatic switch door body is inefficacy. That is, the two states of the locking member 8 locking the driving member 5 and the locking member 8 releasing the driving member 5 can be switched to each other without being in sequence, for example, when the driving member 5 is subjected to an external force, the state of the locking member 8 locking the driving member 5 can be switched to the state of the locking member 8 releasing the driving member 5; it is also possible that when the external force applied to the driver 5 is larger than a predetermined value, the state in which the driver 5 is released by the lock member 8 is switched to the state in which the driver 5 is locked by the lock member 8. Through switching each other of 8 locking driving pieces of locking piece 5 and 8 release driving pieces 5 two kinds of states of locking piece to realize the automatic switch door body of door opener and the switching that the user can the two kinds of modes of manual switch door body, when door opener is applicable to household electrical appliances for example in the embedded electric oven, can promote household electrical appliances's use and experience, promote user's use satisfaction then.

The utility model provides a switching of locking piece 8 between locking position and release position can realize through modes such as electronic, machinery, utilizes electronic or mechanical mechanism to realize that locking piece 8 switches between locking driving piece 5 and the state of release driving piece 5 promptly. In addition, the present invention provides a locking manner according to the specific embodiment, but this is not to be construed as limiting the scope of the present invention.

According to some embodiments of the present invention, the locking member 8 is configured to release the driving member 5 if the pulling force applied to the driving member 5 is greater than a predetermined value, that is, when the pulling force applied to the driving member 5 is less than or equal to the predetermined value, the locking member 8 locks the driving member 5, so that the driving member 5 is fixed relative to the base 1, and when the driving member 5 is fixed, the driving member 5 can drive the connecting member 2 to open and close the door body, so as to achieve automatic opening and closing of the door body; when the pulling force that driving piece 5 receives is greater than the predetermined value, locking piece 8 release driving piece 5 for driving piece 5 is portable for base 1, and driving piece 5 can remove according to the motion trail of predetermineeing, and the user can the manual switch door body, and when the user manual switch door body, driving piece 5 is along with connecting piece 2 round trip movement on base 1. Through the cooperation that sets up locking piece 8 and driving piece 5 for the door opener simple structure can realize the free switching of the automatic switch door body and the manual switch door body, thereby has reduced door opener's manufacturing cost.

Optionally, the driving member 5 includes a hook 53, the locking member 8 includes a lock rod 81 and a reset member, the lock rod 81 is movably connected to the base 1 between a locking position and a releasing position, the lock rod 81 is suitable for being in clamping fit with the hook 53 to position the driving member 5 in the locking position, and the lock rod 81 is suitable for being separated from the hook 53 in the releasing position; the reset member always drives the lock lever 81 to move to the lock position. Thereby, after the locking rod 81 releases the hook at the releasing position, the locking rod 81 is restored to move to the locking position, and when the locking rod 81 locks the hook, the locking rod 81 can always keep locking the hook at the locking position.

Optionally, a travel switch 54 is provided on the driving member 5, and a second trigger 103 is provided on the base 1, the travel switch 54 being configured to be triggered when the driving member 5 is locked by the locking member 8. Therefore, the state of the driving member 5 can be fed back in time, the states of the automatic door opening and closing and the manual door opening and closing of the door opening and closing device 100 can be fed back in real time conveniently, and the control of the door opening and closing device 100 is facilitated.

In addition, the utility model also provides a locking structure of another embodiment, wherein, the base is provided with a limit groove extending along a first direction, the driving piece comprises a first limit part which is limited by the limit groove and can slide along the limit groove, the locking piece comprises a second limit part and a reset structure, the second limit part can move in the direction close to and far away from the limit groove, and the second limit part is used for limiting and releasing the first limit part; the reset structure is arranged on the base and drives the second limiting part to a position suitable for limiting the first limiting part. In the use, when the pulling force that the driving piece received exceeded the threshold value, spacing groove was kept away from to first spacing portion will drive the spacing portion of second, and the spacing portion of second will no longer carry on spacingly to first spacing portion, in other words, the locking piece no longer locks the driving piece promptly, at this moment, can adopt the manual mode drive door body or the connecting piece removes to realize the manual switching of opening the door and between the automatic switch.

Optionally, one of the first limiting portion and the second limiting portion is a roller which can be in rolling contact with the other of the first limiting portion and the second limiting portion. In other words, the first limiting part is a roller and/or the second limiting part is a roller, so that when the force applied to the driving part reaches a threshold value, the driving part can be conveniently switched to a movable state, so that switching of wanting to manually open and close the door can be realized, and similarly, the driving part can be conveniently moved to a position suitable for locking, so that automatic opening and closing of the door can be realized. Therefore, the door opening and closing device can be quickly and stably switched between the automatic door opening and closing mode and the manual door opening and closing mode.

In one embodiment of the present invention, the door opening and closing device 100 includes a driving member 5 (e.g., a motor 51), a screw 4, a sliding assembly 3, a connecting member 2, and a base 1, wherein the driving member 5 may include a motor 51 and a motor bracket 52; the motor bracket 52 is fixed on the motor bracket 52 through screws, and the driving part 5 is fixed on the motor bracket 52 through screws; the connecting piece 2 is fixed on the base body through a rotating shaft, and the connecting piece 2 can rotate around the rotating shaft. The screw rod 4 can synchronously rotate along with the work of the driving piece 5, the sliding component 3 is connected with the screw rod 4 through threads, and the screw rod 4 can push the sliding component 3 to move back and forth when rotating. The sliding assembly 3 includes a first portion 31 and a second portion 32, the first portion 31 includes a sliding block 311 and a sleeve 312, the sleeve 312 is embedded in the sliding block 311, the second portion 32 is disposed on the inner side of the base 1, the second portion 32 is provided with a connecting portion, the connecting portion is inserted into the first portion 31, and the connecting portion and the first portion 31 are connected and fixed by a pin 332. When the sliding component 3 moves back and forth, the sliding component 3 can be driven to move back and forth; then the movement of the sliding component 3 can drive the connecting piece 2 to rotate, so that the force of the motor 51 is transmitted to the connecting piece 2; when the connecting piece 2 is assembled with the door body, the door body can be driven to move.

In addition, the driving member 5 of the present invention can also place the motor 51 at the side of the hinge, for example, the driving member 5 is installed on the first side wall 12 or the second side wall 13, which increases the flexibility of assembly;

in addition, the utility model discloses in still provide a domestic appliance, this domestic appliance can be equipment such as microwave oven, oven. Wherein, according to the utility model discloses domestic appliance includes: the door opening and closing device comprises a machine body, a door body and a door opening and closing device 100, wherein a cavity is formed in the machine body; the door body is arranged on the machine body and is suitable for opening and closing the cavity; the door opening and closing device 100 is the door opening and closing device 100, the base 1 is installed on the machine body, and the connecting piece 2 is connected with the door body.

According to the utility model discloses domestic appliance through 4 transmission power of lead screw, can realize opening the door and close under the drive effect of driving piece 5 to can realize the automatic switch door, make switch door gear 100 more intelligent and facilitate the use, it is more laborsaving.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (17)

1. A door opening and closing device, comprising:

a base;

the connecting piece is movably connected with the base and is used for connecting the door body;

the sliding assembly is arranged on the base in a sliding mode along a first direction and is in transmission connection with the connecting piece so as to drive the connecting piece to move;

the screw rod is in threaded transmission with the sliding assembly so as to convert the rotary motion of the screw rod into the sliding of the sliding assembly;

the driving piece is connected with the screw rod and drives the screw rod to rotate.

2. The door opening and closing device as claimed in claim 1, wherein the base extends in a first direction, the base includes a top wall, a first side wall and a second side wall, the first side wall and the second side wall are respectively connected to opposite sides of the top wall in a second direction, the first side wall and the second side wall are opposite in the second direction, and at least a portion of the sliding assembly is captured between the first side wall and the second side wall.

3. The door opening and closing device according to claim 2, wherein the top wall is provided with a first guide groove extending along a first direction, the sliding assembly is provided with a first guide block extending along the first direction, and the first guide block is slidably embedded in the first guide groove along the first direction.

4. The door opening and closing apparatus as claimed in claim 2, wherein a first guide structure is provided on the first side wall and the second side wall, a second guide structure is provided on the sliding assembly, one of the first guide structure and the second guide structure is a first sliding groove extending in a first direction, the other of the first guide structure and the second guide structure is a first guide pillar slidably inserted into the first sliding groove in the first direction, the first guide pillar extends in a second direction, and both ends of the first guide pillar protrude out of the first side wall and the second side wall and are provided with flanges.

5. The door opening and closing device according to any one of claims 2 to 4, wherein a first flange is provided on an edge of the first side wall, a second flange is provided on an edge of the second side wall, the first flange and the second flange extend in opposite directions, a second guide block is provided on the sliding assembly along the first direction, and the second guide block is slidably inserted between the first flange and the second flange.

6. A door opening and closing device according to any one of claims 2 to 4, wherein said sliding assembly comprises a first portion provided outside said top wall and a second portion provided between and connecting said first and second side walls,

the first portion is provided with a first boss and a second boss which are opposite to each other along a second direction, a second guide groove extending along the first direction is formed between the first boss and the second boss, and the top wall is slidably embedded in the second guide groove along the first direction relative to the sliding assembly.

7. The door opening and closing device according to claim 6, wherein the first portion is provided with a positioning groove, the positioning groove is opened towards one side of the top wall, a part of the second portion penetrates through the top wall and extends into the positioning groove, and the part of the second portion extending into the positioning groove is in pin connection with the first portion.

8. A door opening and closing device according to any one of claims 1 to 4, wherein the sliding assembly comprises:

the sliding block is arranged on the base in a sliding mode along the first direction;

the shaft sleeve is fixedly connected with the sliding block and in threaded transmission with the screw rod.

9. The door opening and closing device as claimed in claim 8, wherein the slider extends in a first direction, the slider is provided with a hole extending in the first direction, the bushing includes a sleeve and a flange, the sleeve is embedded in the hole, the flange is fixedly connected to an end of the slider in the first direction,

the inner diameter of the abdicating hole is larger than the outer diameter of the screw rod.

10. The door opening and closing device as claimed in claim 1, wherein the base has at least one limit switch thereon, the sliding assembly includes a first trigger portion adapted to trigger the limit switch, and the limit switch is in signal communication with the driving member to limit the sliding assembly.

11. The door opening and closing device according to any one of claims 1 to 4, further comprising:

the spring is arranged between the sliding assembly and the driving piece, and the spring is arranged on the outer side of the screw rod and extends spirally along the extending direction of the screw rod.

12. A door opening and closing device according to any one of claims 1 to 4, wherein said connecting member is hinged to said base, said door opening and closing device further comprising:

and one end of the push rod is hinged with the connecting piece, and the other end of the push rod is hinged with the sliding assembly.

13. The door opening and closing device according to claim 12, further comprising:

the roller is movably arranged on the base along a first direction and movably abutted against the edge of the connecting piece between a limiting position and a releasing position,

the connecting piece is provided with a limiting notch, and the roller is embedded into the limiting notch at the limiting position.

14. The door opening and closing device according to any one of claims 1 to 4, further comprising:

the locking piece is arranged on the base and used for locking and releasing the driving piece, the locking piece locks the driving piece, then the driving piece is fixed relative to the base, and the locking piece releases the driving piece, then the driving piece is movable relative to the base.

15. The door opening and closing device as claimed in claim 14, wherein the driving member includes a hook, and the locking member includes:

the locking rod is movably connected to the base between a locking position and a releasing position, the locking rod is suitable for being clamped and matched with the clamping hook at the locking position to position the driving piece, and the locking rod is suitable for being separated from the clamping hook at the releasing position;

and the reset piece is used for normally driving the lock rod to move to the locking position.

16. The door opening and closing device as claimed in claim 14, wherein a travel switch is provided on the driving member, and a second activating portion is provided on the base, the travel switch being configured to be activated when the driving member is locked by the locking member.

17. A household appliance, characterized in that it comprises:

the device comprises a machine body, a control device and a control device, wherein a cavity is formed in the machine body;

the door body is arranged on the machine body and is suitable for opening and closing the cavity;

the door opening and closing device according to any one of claims 1 to 16, wherein the base is mounted on the body, and the connecting member is connected to the door body.

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