CN110984760B - Automatic door opening mechanism and household appliance - Google Patents
Automatic door opening mechanism and household appliance Download PDFInfo
- Publication number
- CN110984760B CN110984760B CN201911060759.8A CN201911060759A CN110984760B CN 110984760 B CN110984760 B CN 110984760B CN 201911060759 A CN201911060759 A CN 201911060759A CN 110984760 B CN110984760 B CN 110984760B
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- Prior art keywords
- door opening
- connecting sleeve
- push rod
- opening mechanism
- shaft
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- 230000007246 mechanism Effects 0.000 title claims abstract description 71
- 230000004308 accommodation Effects 0.000 description 15
- 238000005034 decoration Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000000903 blocking effect Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention belongs to the technical field of household appliances, and particularly discloses an automatic door opening mechanism and a household appliance. The automatic door opening mechanism comprises a driving device, a door opening mechanism and a door opening mechanism, wherein the driving device comprises a driving shaft capable of reciprocating along a straight line; the connecting sleeve is provided with a first accommodating cavity, and one end of the connecting sleeve is connected with the driving shaft; one end of the push rod is in sliding connection with the cavity wall of the first accommodating cavity, and the other end of the push rod extends out of the other end of the connecting sleeve; and the elastic telescopic unit is arranged along the length direction of the push rod, one end of the elastic telescopic unit is connected with the connecting sleeve, and the other end of the elastic telescopic unit is connected with the push rod. The household appliance comprises a shell, a door and the automatic door opening mechanism, wherein the door is rotationally connected with the shell, and the automatic door opening mechanism is arranged on the shell or the door so that the door is propped open relative to the shell. The automatic door opening mechanism and the household appliance provided by the invention have the advantages of simple structure and high safety and reliability.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an automatic door opening mechanism and a household appliance.
Background
The dish washer is automatic equipment for automatically cleaning dishes such as bowls, chopsticks, plates and dishes, and is used by more families along with the improvement of the living standard of people, so that the labor intensity of users can be reduced, the working efficiency can be improved, the sanitation and the sanitation can be improved, and the comfortable living experience of the users can be met.
After the dish washer cleans dishes and the like, the dishes need to be dried, and because the inside humidity of the dish washer is large after washing, the temperature is high, and water vapor evaporated at high temperature in the dish washer is difficult to effectively discharge, so that the water vapor in the dish washer is slowly evaporated, and the dishes are slowly dried, thereby the total time for cleaning the dishes is increased, and the energy consumption of the dish washer is increased.
The prior art provides a dish washer, and it includes fuselage and gate and controls the gate to open the automatic door opener of certain open-ended, and automatic door opener includes push rod and worm gear drive assembly, and the push rod has the drive gate to open the open-ended position of stretching out and the position of resetting of withdrawal fuselage, and worm gear drive assembly drive push rod changes between stretching out position and position of resetting. Through the arrangement of the automatic door opening device, a certain opening can be opened in the final bowl and dish drying state, and the escape of water vapor is accelerated, so that the drying process of the bowl and the dish is accelerated. However, the automatic door opening device has a complex structure, and the worm gear is matched with a rack structure arranged on the push rod, so that the door opening device is easy to wear in repeated door opening and closing projects, and the movement precision is reduced; when the door is blocked by a blocking force opposite to the door opening direction in the door opening process of the automatic door opening device, the worm and the worm gear can realize self-locking, but hard collision between the worm and the worm gear can still be caused, and the service life of the automatic door opening and closing device is influenced; and after the worm gear is self-locked, if the motor is in a starting state all the time, the motor is also easy to damage.
Disclosure of Invention
An object of the present invention is to provide an automatic door opening mechanism, which can simplify the structure of the automatic door opening mechanism, prolong the service life of the automatic door opening and closing mechanism, and prevent the damage to the automatic door opening and closing mechanism caused by the misoperation of door opening and door opening in place during the door opening process.
Another object of the present invention is to provide a household appliance, which improves the intelligent and automatic operation of the household appliance, and improves the safety, reliability and effectiveness of the automatic door opening of the household appliance.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an automatic door opening mechanism comprising:
a driving device including a driving shaft capable of reciprocating in a straight line;
the connecting sleeve is provided with a first accommodating cavity, and one end of the connecting sleeve is connected with the driving shaft;
one end of the push rod is in sliding connection with the cavity wall of the first accommodating cavity, and the other end of the push rod extends out of the other end of the connecting sleeve;
the elastic telescopic unit is arranged along the length direction of the push rod, one end of the elastic telescopic unit is connected with the connecting sleeve, and the other end of the elastic telescopic unit is connected with the push rod.
As an automatic door opening mechanism's preferred technical scheme, the push rod has seted up one end open-ended second and has held the chamber, the second hold the chamber the opening with first hold the chamber intercommunication, the one end of elastic expansion unit with the second holds the chamber end connection in chamber, the other end of elastic expansion unit with the first chamber end intercommunication that holds the chamber.
As an optimal technical scheme of the automatic door opening mechanism, the connecting sleeve and the push rod are of cylindrical structures. The processing is simplified, the sliding resistance between the push rod and the connecting sleeve is reduced, and the energy consumption is reduced.
As a preferable technical scheme of the automatic door opening mechanism, one end of the connecting sleeve, which is far away from the driving shaft, is provided with a through hole communicated with the first accommodating cavity, and the aperture of the through hole is smaller than the diameter of the first accommodating cavity;
the push rod comprises a first section and a second section which are axially arranged, the outer surface of the first section is in sliding connection with the cavity wall of the first accommodating cavity, and the second section penetrates through the through-connection hole and extends out of the connecting sleeve. The push rod can be prevented from being separated from the connecting sleeve in the sliding process of the push rod relative to the connecting sleeve, and the structural stability and reliability of the automatic door opening mechanism are improved.
As an optimal technical scheme of the automatic door opening mechanism, a clamping groove is formed in the end face of the connecting sleeve, and the driving shaft is clamped with the clamping groove. The connection and the disassembly between the connecting sleeve and the driving device are convenient.
As a preferable technical scheme of the automatic door opening mechanism, the driving shaft comprises a first shaft and a second shaft which are distributed along the axial direction of the driving shaft, the first shaft is positioned at the outer side of the second shaft, and the shaft diameter of the first shaft is larger than that of the second shaft;
the clamping groove comprises a first groove part and a second groove part which are communicated with each other, the second groove part is positioned at the notch of the first groove part, the groove width of the second groove part is smaller than that of the first groove part, the first shaft is positioned in the first groove part, the groove depth of the first groove part is equal to the length of the first shaft, and the second shaft is positioned at the second groove part. The first groove part can axially limit the first shaft of the driving shaft, so that the connecting sleeve is prevented from axially moving relative to the driving shaft, and the connection reliability of the driving shaft and the connecting sleeve is improved.
As a preferable technical scheme of the automatic door opening mechanism, the connecting sleeve is formed by buckling two semi-cylindrical half sleeves. The push rod is convenient to be arranged in the connecting sleeve, and the processing of the connecting sleeve is simplified.
As an optimal technical scheme of the automatic door opening mechanism, one side plane of the half sleeve is convexly provided with a positioning protrusion, the other side plane of the half sleeve is concavely provided with a positioning groove, the positioning protrusion can be inserted into the positioning groove, and the positioning protrusions are arranged in one-to-one correspondence with the positioning grooves. The positioning and connection stability of the two half sleeves in the buckling process can be realized by a simple structure.
The household appliance comprises a shell, a machine door and the automatic door opening mechanism, wherein the machine door is rotationally connected with the shell, and the automatic door opening mechanism is arranged on the shell or the machine door so that the machine door can be opened relatively to the shell.
As a preferable technical scheme of the household appliance, the household appliance is a dish washer, the automatic door opening mechanism is arranged on the inner surface of the top decorative strip of the dish washer, and the push rod extends out of the outer surface of the top decorative strip.
The invention has the beneficial effects that:
according to the automatic door opening mechanism provided by the invention, one end of the push rod is connected in the first accommodating cavity of the connecting sleeve in a sliding manner, and the elastic telescopic unit is arranged between the push rod and the connecting sleeve, so that when the driving shaft of the driving device stretches out, the driving shaft drives the connecting sleeve and the push rod to stretch out, and the door is propped against the shell; when the door is opened, or a reverse door closing force is applied in the door opening process, the blocking force is applied to the push rod through the machine door, the push rod is driven to slide relative to the connecting sleeve in the first accommodating cavity and compress the elastic telescopic unit, so that the state of the connecting sleeve and the driving device is kept unchanged while the elastic telescopic unit absorbs the blocking force, the driving device is prevented from being damaged by hard collision when the driving device encounters the blocking or reverse door closing acting force in the door opening process, and the safety and reliability of the automatic door opening mechanism are improved; when the external force acting on the machine door is withdrawn, the elastic telescopic unit recovers the original length, and the elastic restoring force of the elastic telescopic unit promotes the push rod to continuously push the machine door open, so that the machine door is pushed open by a preset width, the door opening action of the automatic door opening mechanism is ensured not to be stopped due to the misoperation of closing the door, and the door opening effect and the door opening effectiveness are ensured; the automatic door opening mechanism provided by the invention has the advantages of simple structure, small occupied space, lower cost and better economical practicability.
The household appliance provided by the invention improves the intelligent and automatic operation of the household appliance by adopting the automatic door opening mechanism, and improves the safety, reliability and effectiveness of automatic door opening of the household appliance.
Drawings
FIG. 1 is a schematic diagram of an automatic door opening mechanism and a top molding according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an automatic door opening mechanism according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an automatic door opening mechanism provided by an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
fig. 5 is a schematic diagram of a split structure of a connecting sleeve according to an embodiment of the present invention.
The figures are labeled as follows:
10-an automatic door opening mechanism; 20-top decorative strip; 201-bayonet;
1-a driving device; 11-a drive shaft; 111-a first axis; 112-a second axis; 113-a third axis; 12-wax motor;
2-connecting sleeve; 21-a first accommodation chamber; 211-a receiving groove; 22-clamping grooves; 221-connecting grooves; 222-a first groove portion; 223-a second groove portion; 23-perforating the hole; 231-through slot; 24-half sleeve; 25-positioning protrusions; 26-positioning grooves;
3-pushing rod; 31-a first section; 32-a second section; 33-a second accommodation chamber;
4-an elastic telescoping unit;
5-a housing; 51-a receiving groove; 52-an accommodating cavity; 53-a clamping part; 531-hooks.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The embodiment of the invention provides a household appliance, which comprises a shell, a machine door and an automatic door opening mechanism 10, wherein the shell is provided with an inner cavity with an opening at one side, one side of the machine door is rotatably connected with the shell to open or close the opening, the automatic door opening mechanism 10 is arranged on the machine door or the shell and can drive the machine door to move relative to the shell, so that the machine door can be opened by a preset width relative to the shell, and the automatic door opening of the household appliance is realized. In this embodiment, the home appliance may be a refrigerator, a dishwasher, a sterilizer, or the like. In the present embodiment, the automatic door opening mechanism 10 will be described in detail taking a household appliance as an example of a dishwasher.
The dish washer provided by the embodiment comprises the machine shell, the machine door and the automatic door opening mechanism 10, wherein the machine shell is provided with an inner cavity with an opening at the front side, an inner container is arranged in the inner cavity, a bowl basket, a water spraying mechanism and the like are arranged in the inner container, and the lower end of the machine door is hinged with the machine shell so that the machine door can open or close the opening in the process of rotating relative to the machine shell. Specifically, fig. 1 is a schematic structural diagram of an automatic door opening mechanism 10 and a top decoration strip 20 provided in an embodiment of the present invention, as shown in fig. 1, the top decoration strip 20 is provided at the front top of a dishwasher, the automatic door opening mechanism 10 is provided at the inner surface of the top decoration strip 20, and a push rod 3 in the automatic door opening mechanism 10 can extend out of the outer surface of the top decoration strip 20 to contact with the top of the machine door so as to open the top of the machine door.
In the present embodiment, the automatic door opening mechanism 10 is disposed on the housing, so that most of the structure of the automatic door opening mechanism 10 can be hidden in the housing, and enough space is provided for the installation of the automatic door opening mechanism 10. In other embodiments, the automatic door opening device may be mounted on the door.
Fig. 2 is a schematic structural diagram of an automatic door opening mechanism according to an embodiment of the present invention, and fig. 3 is a cross-sectional view of an automatic door opening mechanism 10 according to an embodiment of the present invention, as shown in fig. 2 and 3, the automatic door opening mechanism 10 mainly includes a driving device 1, a connecting sleeve 2, an elastic telescopic unit 4, and a push rod 3. The driving device 1 is provided with a driving shaft 11 which can extend or retract, and the driving shaft 11 is connected with the connecting sleeve 2 and is used for driving the connecting sleeve 2 to axially reciprocate along the driving shaft 11; the length direction of the connecting sleeve 2 is coincident with the axial direction of the driving shaft 11, one end of the connecting sleeve 2 is connected with the driving shaft 11, the connecting sleeve 2 is provided with a first accommodating cavity 21, one end of the push rod 3 is positioned in the first accommodating cavity 21 and is in sliding connection with the cavity wall of the first accommodating cavity 21, and the other end of the push rod 3 extends out of one end of the connecting sleeve 2 far away from the driving shaft 11; the elastic telescopic unit 4 is arranged along the length direction of the push rod 3, one end of the elastic telescopic unit 4 is connected with the cavity wall of the first accommodating cavity 21, and the other end of the elastic telescopic unit is connected with the push rod 3.
According to the automatic door opening mechanism 10 provided by the embodiment of the invention, one end of the push rod 3 is slidably connected in the first accommodating cavity 21 of the connecting sleeve 2, and an elastic telescopic unit 4 is arranged between the push rod 3 and the cavity wall of the first accommodating cavity 21, when the driving shaft 11 of the driving device 1 stretches out, the driving shaft 11 drives the connecting sleeve 2 and the push rod 3 to stretch out so as to jack the door relative to the shell; when the door is opened, or a reverse door closing force is applied in the door opening process, the blocking force is applied to the push rod 3 through the door, the push rod 3 is driven to slide relative to the connecting sleeve 2 in the first accommodating cavity 21 and compress the elastic telescopic unit 4, so that the state of the connecting sleeve 2 and the driving device 1 is kept unchanged while the elastic telescopic unit 4 absorbs the blocking force, the driving device 1 is prevented from being damaged by hard collision when the blocking or reverse door closing force is applied in the door opening process, and the safety and reliability of the automatic door opening mechanism 10 are improved; when the external force acting on the machine door is withdrawn, the elastic telescopic unit 4 returns to the original length, and the restoring force of the elastic telescopic unit causes the push rod 3 to continuously push the machine door open, so that the machine door is pushed open by a preset width, the door opening action of the automatic door opening mechanism 10 is ensured not to be stopped due to the misoperation of door closing, and the door opening effect and the door opening effectiveness are ensured. The automatic door opening mechanism 10 provided by the embodiment of the invention has the advantages of simple structure, small occupied space, lower cost and better economical practicability.
In this embodiment, in order to improve the integrity and the modular design of the automatic door opening mechanism 10, the automatic door opening mechanism 10 is convenient to install and transport, and the automatic door opening mechanism 10 preferably further includes a housing 5. The casing 5 has accommodation space, and drive arrangement 1 and adapter sleeve 2 all set up in the accommodation space to protect drive arrangement 1 and adapter sleeve 2, prevent that drive arrangement 1 from receiving inside steam of dish washer and outside dust effect, improve the security and the reliability of automatic mechanism 10 that opens the door.
In the present embodiment, preferably, the accommodation space includes an accommodation groove 51 and an accommodation cavity 52 provided along the length direction of the push rod 3, the accommodation cavity 52 communicates with the accommodation groove 51, the driving device 1 is fixedly provided in the accommodation groove 51, and the connection sleeve 2 is slidably provided in the accommodation cavity 52. This arrangement is advantageous in that the connecting sleeve 2 can be slidably connected with the wall of the accommodating chamber 52 while providing the driving device 1 with a sufficient accommodating area, and in that the connection coaxiality of the driving device 1 and the connecting sleeve 2 is ensured.
In this embodiment, the end of the housing 5 away from the driving device 1 is detachably connected with the top decoration strip 20, so as to facilitate the installation and maintenance of the automatic door opening mechanism 10. Preferably, in the present embodiment, the housing 5 is connected to the top trim 20 in a snap-fit manner. The shell 5 is provided with joint portion 53 along the both sides of top decoration strip 20 length direction, is provided with pothook 531 on the joint portion 53, and the bayonet socket 201 has been seted up to the position of top decoration strip 20 corresponding to pothook 531, and pothook 531 and bayonet socket 201 joint are connected. In the present embodiment, the clamping portion 53 is preferably an L-shaped structure, a lateral side of the L-shaped structure is connected with the main body structure of the housing 5, and the hook 531 is disposed on a vertical side of the L-shaped structure. The above-mentioned clamping structure's setting can increase the stability that casing 5 and top decoration strip 20 joint are connected to increase the installation stability and the reliability of automatic mechanism 10 that opens the door. In other embodiments, the clamping portion 53 may be disposed at other positions of the housing 5, for example, on an end surface of the housing 5 facing the top decoration strip 20, and in other embodiments, the housing 5 and the top decoration strip 20 may be detachably connected by riveting or other manners.
In the present embodiment, preferably, the driving device 1 includes a wax motor 12 and a driving shaft 11. The wax motor 12 includes a sealed housing filled with solid wax, a spring-loaded piston and a thermistor having a positive temperature coefficient, the thermistor being mounted on the sealed housing, the solid wax melting and expanding when heated to a controllable temperature by the energized thermistor, thereby driving the spring-loaded piston to extend; when the thermistor is de-energized, the liquid wax cools and contracts, so that the piston returns to its original position under the restoring force of the spring. The spring-loaded piston is connected to the drive shaft 11 such that extension and retraction of the piston causes the drive shaft 11 to extend or retract axially thereof to an initial position. The wax motor 12 is a well-known art, and the description of this embodiment is omitted. In the present embodiment, the wax motor 12 is used as the driving power, which is small in size and low in cost, so that the size and cost of the automatic door opening mechanism 10 can be effectively reduced, and in other embodiments, the driving device 1 may be in a driving form such as a linear motor, which can enable the driving shaft 11 to reciprocate linearly.
The driving shaft 11 is detachably connected with the connecting sleeve 2, so that the automatic door opening mechanism 10 is convenient to assemble and maintain. Preferably, the driving shaft 11 is in snap connection with the connecting sleeve 2, in particular fig. 4 is an enlarged partial view at a in fig. 2. As shown in fig. 4, the driving shaft 11 is provided with an annular groove along the circumferential direction thereof, and the annular groove is arranged to enable the driving shaft 11 to form a first shaft 111, a second shaft 112 and a third shaft 113 which are distributed along the axial direction thereof, wherein the shaft diameters of the first shaft 111 and the third shaft 113 are equal, and the shaft diameter of the second shaft 112 is smaller than that of the first shaft 111.
The end face of the connecting sleeve 2, facing the driving shaft 11, is provided with a clamping groove 22, the clamping groove 22 comprises a first groove part 222 and a second groove part 223 which are axially arranged along the driving shaft 11, and the second groove part 223 is positioned at the notch position of the first groove part 222. The groove width of the first groove part 222 is matched with the shaft diameter of the first shaft 111, and the groove depth of the first groove part 222 is equal to the axial length of the first shaft 111; the groove width of the second groove portion 223 is adapted to the shaft diameter of the second shaft 112, and the groove depth of the second groove portion 223 is equal to the axial length of the second shaft 112. When the driving shaft 11 is clamped with the connecting sleeve 2, the first shaft 111 is located in the first groove 222, the second shaft 112 is located in the second groove 223, and the end surface of the third shaft 113 connected with the second shaft 112 is abutted with the end surface of the connecting sleeve 2, so that the driving shaft 11 and the connecting sleeve 2 are fixed at the axial position of the driving shaft 11, no axial movement occurs, and the driving reliability of the driving device 1 on the connecting sleeve 2 is improved. In this embodiment, in order to facilitate the clamping of the drive shaft 11 and the clamping groove 22 in place, the clamping groove 22 penetrates the surface of the connecting sleeve 2 in the groove length direction.
In other embodiments, the driving shaft 11 may be screwed with the connecting sleeve 2, or may be in other fastening connection forms, which will not be described in detail in this embodiment.
In this embodiment, the connecting sleeve 2 is slidably connected to the wall of the accommodating cavity 52, the push rod 3 is slidably connected to the wall of the first accommodating cavity 21, in order to reduce sliding resistance and reduce sliding energy consumption, preferably, the connecting sleeve 2 has a cylindrical structure, the accommodating cavity 52 and the first accommodating cavity 21 are both cylindrical cavities, and the outer surface of the push rod 4 is a cylindrical peripheral surface. In other embodiments, the connecting sleeve 2 may be a hollow hexahedron, a hollow polyhedron, or the like, and only needs to ensure that the shape of the accommodating cavity 52 is matched with the shape of the outer surface of the connecting sleeve 2, and the outer surface of the push rod 3 is matched with the shape of the inner wall of the first accommodating cavity 21.
One end of the push rod 3 is slidably connected in the first accommodating cavity 21 of the connecting sleeve 2, the other end of the push rod 3 extends out of the connecting sleeve 2, in order to enable the push rod 3 to push the machine door, one end of the accommodating cavity 52 away from the driving device 1 is opened, an outlet is formed in the position, corresponding to the push rod 3, of the top decoration strip 20, and the push rod 3 pushes the machine door through the opening of the accommodating cavity 52 and the outlet penetrating out of the top decoration strip 20.
In order to prevent the push rod 3 from being separated from the connecting sleeve 2 in the sliding process of the push rod 3 relative to the connecting sleeve 2, in this embodiment, a through hole 23 is formed at one end of the connecting sleeve 2 away from the driving device 1, the through hole 23 and the first accommodating cavity 21 are coaxially arranged, and the aperture of the through hole 23 is smaller than the diameter of the first accommodating cavity 21, so that a limiting step is formed between the wall of the through hole 23 and the wall of the first accommodating cavity 21. The push rod 3 includes first section 31 and second section 32 that set up along its length direction, the external diameter of first section 31 equals the diameter of first chamber 21 that holds, the external diameter of second section 32 equals the diameter of cross-under hole 23, thereby when making push rod 3 and adapter sleeve 2 installation, first section 31 is located first chamber 21 that holds and can slide relative first chamber 21 chamber wall that holds, second section 32 passes cross-under hole 23, and can slide relative cross-under hole 23 pore wall, simultaneously, when the step face that forms between first section 31 and the second section 32 with spacing step butt, push rod 3 can't continue to move to the direction of keeping away from drive arrangement 1 relative adapter sleeve 2, guarantee push rod 3 and adapter sleeve 2 do not break away from in the use.
In this embodiment, to facilitate the installation of the push rod 3 in the connecting sleeve 2, the connecting sleeve 2 is preferably formed by buckling two semi-cylindrical half sleeves 24. Fig. 5 is a schematic diagram of a split structure of a connecting sleeve 2 provided in an embodiment of the present invention, as shown in fig. 5, an end face of each half sleeve 24 facing a driving device 1 is provided with a connecting groove 221 with an L-shaped cross section, and the connecting grooves 221 of the two half sleeves 24 are symmetrically arranged and are communicated after being buckled to form a clamping groove 22; one end of each half sleeve 24 far away from the driving device 1 is provided with a semi-cylindrical through groove 231, and the through grooves 231 of the two half sleeves 24 are symmetrically arranged and combined to form a connecting hole after being buckled; each half-sleeve 24 has a half-cylindrical receiving groove 211, and the receiving grooves 211 of the two half-sleeves 24 are symmetrically arranged and form the receiving cavity 21 after being fastened. In another embodiment, the connecting sleeve 2 may be divided into a barrel portion and an end cover, wherein the barrel portion is axially arranged, one end of the barrel portion is opened, the other end of the barrel portion is provided with a through hole 23, the end cover is arranged at the opening of the barrel portion, and the end cover is provided with the clamping groove 22. In another embodiment, the cylinder may be closed toward one end of the driving device 1 and provided with the engagement groove 22, and the other end of the cylinder may be opened and connected with an end cap, and the end cap may be provided with a through hole 23. In other embodiments, the installation of the push rod 3 in the connecting sleeve 2 may be performed in other manners, and the details of this embodiment will not be repeated.
In this embodiment, in order to facilitate the buckling of the two half sleeves 24 to form the connecting sleeve 2, a positioning protrusion 25 is convexly arranged on a side plane of one half sleeve 24, a plurality of positioning grooves 26 are concavely arranged on a side plane of the other half sleeve 24, the positioning protrusions 25 are arranged in one-to-one correspondence with the positioning grooves 26, and after the two half sleeves 24 are buckled, the positioning protrusions 25 are inserted into the positioning grooves 26. In order to fasten the two half-sleeves 24 more tightly, the positioning protrusions 25 and the positioning grooves 26 are provided in plurality, for example, in the present embodiment, the half-sleeves 24 are provided with two positioning protrusions 25 or two positioning grooves 26 on two sides of the semi-cylindrical receiving groove 211, and each positioning protrusion 25 (or positioning groove 26) is provided with a plurality of positioning protrusions 25 (or positioning grooves 26) along the axial direction of the connecting sleeve 2 at intervals. In other embodiments, the positioning protrusions 25 and the positioning grooves 26 may be arranged in other manners, for example, each half sleeve 24 is provided with the positioning protrusions 25 and the positioning grooves 26, but the positioning protrusions 25 on one half sleeve 24 are arranged in one-to-one correspondence with the positioning grooves 26 on the other half sleeve 24.
In the present embodiment, it is preferable that the push rod 3 is provided with a second accommodation chamber 33 having one end opened in the axial direction thereof, the opening of the second accommodation chamber 33 is directed toward the driving device 1, and the second accommodation chamber 33 communicates with the first accommodation chamber 21. One end of the elastic telescopic unit 4 is positioned in the second accommodating cavity 33 and is connected with the cavity bottom of the second accommodating cavity 33, and the other end of the elastic telescopic unit 4 is positioned in the first accommodating cavity 21 and is connected with the cavity bottom of the first accommodating cavity 21 far away from the through hole 23. This kind of setting means can guarantee that automatic door opening mechanism 10 is under the condition of not increasing in the size of push rod 3 direction of motion, increases the length of elastic telescoping unit 4 to can absorb the hindrance power of exerting on the gate more effectively, prevent elastic telescoping unit 4 too short and cause the limited problem of absorption of hindrance power, can provide the protection for drive arrangement 1 better. In other embodiments, the push rod 3 may be a solid structure, the elastic telescopic units 4 are all located in the first accommodating cavity 21, one end of each elastic telescopic unit is connected with the cavity bottom of the first accommodating cavity 21, and the other end of each elastic telescopic unit is connected with the end face of the push rod 3.
In the present embodiment, the elastic expansion unit 4 is a spring, and in other embodiments, the elastic expansion unit 4 may have other structures capable of realizing elastic expansion.
In this embodiment, the other structural arrangements of the dishwasher may refer to those in the prior art, which are not the focus of the present invention, and the description of this embodiment is omitted.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (8)
1. An automatic door opening mechanism, comprising:
a drive device (1) comprising a drive shaft (11) capable of reciprocating in a straight line;
a connecting sleeve (2) which is provided with a first accommodating cavity (21), wherein one end of the connecting sleeve (2) is connected with the driving shaft (11);
one end of the push rod (3) is in sliding connection with the cavity wall of the first accommodating cavity (21), and the other end of the push rod (3) extends out of the other end of the connecting sleeve (2);
the elastic telescopic unit (4) is arranged along the length direction of the push rod (3), one end of the elastic telescopic unit (4) is connected with the connecting sleeve (2), and the other end of the elastic telescopic unit (4) is connected with the push rod (3);
the push rod (3) is provided with a second accommodating cavity (33) with one end open, the opening of the second accommodating cavity (33) is communicated with the first accommodating cavity (21), one end of the elastic telescopic unit (4) is connected with the cavity bottom of the second accommodating cavity (33), and the other end of the elastic telescopic unit (4) is communicated with the cavity bottom of the first accommodating cavity (21);
the shell (5) is provided with a containing space, the driving device (1) and the connecting sleeve (2) are arranged in the containing space, the containing space comprises a containing groove (51) and a containing cavity (52) which are arranged along the length direction of the push rod (3), the containing cavity (52) is communicated with the containing groove (51), the driving device (1) is fixedly arranged in the containing groove (51), and the connecting sleeve (2) is slidably arranged in the containing cavity (52);
the connecting sleeve (2) and the push rod (3) are both in cylindrical structures.
2. The automatic door opening mechanism according to claim 1, characterized in that one end of the connecting sleeve (2) far away from the driving shaft (11) is provided with a through hole (23) communicated with the first accommodating cavity (21), and the aperture of the through hole (23) is smaller than the diameter of the first accommodating cavity (21);
the push rod (3) comprises a first section (31) and a second section (32) which are axially arranged along the push rod, the outer surface of the first section (31) is in sliding connection with the cavity wall of the first accommodating cavity (21), and the second section (32) penetrates through the through hole (23) and extends out of the connecting sleeve (2).
3. The automatic door opening mechanism according to claim 1, wherein a clamping groove (22) is formed in the end face of the connecting sleeve (2), and the driving shaft (11) is clamped with the clamping groove (22).
4. An automatic door opening mechanism according to claim 3, characterized in that the driving shaft (11) comprises a first shaft (111) and a second shaft (112) distributed along the axial direction thereof, the first shaft (111) being located outside the second shaft (112), the shaft diameter of the first shaft (111) being larger than the shaft diameter of the second shaft (112);
the clamping groove (22) comprises a first groove part (222) and a second groove part (223) which are communicated with each other, the second groove part (223) is positioned at a notch of the first groove part (222), the groove width of the second groove part (223) is smaller than that of the first groove part (222), the first shaft (111) is positioned in the first groove part (222), the groove depth of the first groove part (222) is equal to the length of the first shaft (111), and the second shaft (112) is positioned at the second groove part (223).
5. An automatic door opening mechanism according to claim 1, characterized in that the connecting sleeve (2) is formed by two semi-cylindrical half-sleeves (24) which are buckled.
6. The automatic door opening mechanism according to claim 5, wherein a positioning protrusion (25) is convexly arranged on a side plane of one half sleeve (24), a positioning groove (26) is concavely arranged on a side plane of the other half sleeve (24), the positioning protrusion (25) can be inserted into the positioning groove (26), and the positioning protrusions (25) are arranged in one-to-one correspondence with the positioning grooves (26).
7. A domestic appliance comprising a housing, a door and an automatic door opening mechanism as claimed in any one of claims 1 to 6, said door being rotatably connected to said housing, said automatic door opening mechanism being provided on said housing or said door to allow said door to be lifted relative to said housing.
8. The household appliance according to claim 7, wherein the household appliance is a dishwasher, the automatic door opening mechanism (10) is mounted on the inner surface of a top decorative strip (20) of the dishwasher, and the push rod (3) extends out of the outer surface of the top decorative strip (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911060759.8A CN110984760B (en) | 2019-11-01 | 2019-11-01 | Automatic door opening mechanism and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911060759.8A CN110984760B (en) | 2019-11-01 | 2019-11-01 | Automatic door opening mechanism and household appliance |
Publications (2)
| Publication Number | Publication Date |
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| CN110984760A CN110984760A (en) | 2020-04-10 |
| CN110984760B true CN110984760B (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911060759.8A Active CN110984760B (en) | 2019-11-01 | 2019-11-01 | Automatic door opening mechanism and household appliance |
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| Country | Link |
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| CN (1) | CN110984760B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212592007U (en) * | 2020-05-28 | 2021-02-26 | 佛山市顺德区美的洗涤电器制造有限公司 | Dishwasher and door opener |
| CN113812899A (en) * | 2020-06-18 | 2021-12-21 | 佛山市顺德区美的洗涤电器制造有限公司 | Dish washing machine |
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| CN209384857U (en) * | 2018-08-22 | 2019-09-13 | 惠州市瑞时智控科技有限公司 | A kind of short stroke bullet door device |
| CN110259317A (en) * | 2019-06-21 | 2019-09-20 | 宁波安佳卫厨电器有限公司 | A kind of dish-washing machine with automatic door operator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5004268B2 (en) * | 2006-04-25 | 2012-08-22 | 株式会社ニフコ | Pushing device |
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| GB1103022A (en) * | 1964-03-09 | 1968-02-14 | Valbert Max Brauchli | Spring push-rod system for counterbalancing the weight of a rising door |
| JP2006200891A (en) * | 2006-04-28 | 2006-08-03 | Toshiba Corp | Door opening device for storage |
| CN106066113A (en) * | 2015-04-22 | 2016-11-02 | Bsh家用电器有限公司 | There is Domestic refrigerator and the method for the overload protection arrangement of auxiliary opening means |
| CN107518850A (en) * | 2017-11-21 | 2017-12-29 | 佛山市百斯特电器科技有限公司 | A kind of automatic door-opening mechanism |
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| Publication number | Publication date |
|---|---|
| CN110984760A (en) | 2020-04-10 |
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