CN111287562A

CN111287562A - Hidden handle, household appliance and control method of hidden handle

Info

Publication number: CN111287562A
Application number: CN201811498141.5A
Authority: CN
Inventors: 孙京岩; 冯浩; 常良; 韩照华; 桑成明; 张勇
Original assignee: Qingdao Haier Wisdom Kitchen Appliance Co Ltd
Current assignee: Qingdao Haier Wisdom Kitchen Appliance Co Ltd
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2020-06-16
Anticipated expiration: 2038-12-07
Also published as: CN111287562B

Abstract

The invention provides a hidden handle, which is fixed with a door body through a fixing device and comprises a handle body and a driving mechanism, wherein the driving mechanism is arranged on the fixing device, and the handle body extends outwards or retracts to be flush with the outer side of the door body under the driving of the driving mechanism so as to realize hiding. The invention further provides a household appliance with the hidden handle and a driving method of the hidden handle.

Description

Hidden handle, household appliance and control method of hidden handle

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a household appliance with a hidden handle.

Background

At present, most of household appliances with storage spaces, such as door handles of steam ovens and disinfection cabinets, are usually fixed on the outer surface of a door body through a handle seat, the whole handle extends out of the door body to give a sharp feeling and influence the overall appearance of the product, and when the household appliances are placed in a kitchen, the handle protruding out of the surface of the door body additionally occupies limited space of the kitchen, so that the movement space of a user in the kitchen is reduced.

Disclosure of Invention

The present invention is directed to solving the above problems and disadvantages, and to providing a handle that can be hidden under normal conditions, a household appliance with a hidden handle, and a control method for the hidden handle.

In order to achieve the above purpose, the invention firstly provides a hidden handle, which adopts the technical scheme that:

a hidden handle is flush with a door body and hidden in a normal state and can extend out in a use state.

Furthermore, the handle is fixed with the door body through a fixing device and comprises a handle body and a driving mechanism, the driving mechanism is installed on the fixing device, and the handle body extends outwards or retracts to be flush with the outer side of the door body under the driving of the driving mechanism so as to be hidden.

Furthermore, the fixing device comprises a rear back plate, a supporting plate and a front plate which are sequentially connected into a Z shape, wherein a left side plate and a right side plate are arranged on two sides of the supporting plate, the front plate is fixed with the top frame of the door body, and the left side plate and the right side plate are fixed with the inner sides of the left frame and the right frame of the door body.

Further, the driving device is fixed on the top of the supporting plate.

Furthermore, the handle also comprises a linkage mechanism, one end of the linkage mechanism is fixed with the driving mechanism, the other end of the linkage mechanism is fixed with the back of the handle body, and the driving mechanism drives the handle body to extend out or retract and hide under the action of the linkage mechanism.

Furthermore, the driving mechanism comprises a motor and a rotating shaft driven by the motor, and the rotating shaft is fixed with the linkage mechanism and drives the linkage mechanism to move under the driving of the motor.

Furthermore, an output shaft of the motor is fixed with a pinion, a bull gear is meshed with the pinion, and the rotating shaft is fixed with a central hole of the bull gear.

Furthermore, the linkage mechanism comprises a linkage rod, one end of the linkage rod is fixed with the rotating shaft, and the other end of the linkage rod is fixed with the back of the handle body.

Furthermore, the linkage rod comprises a driving rod and a driven rod, one end of the driving rod is fixed with the rotating shaft, and one end of the driven rod is fixed with the supporting plate.

Furthermore, the fixing device is provided with an installation seat with an installation groove, and the rotating shaft penetrates through the side wall of the installation groove and is fixed with one end of the linkage rod in the installation groove and can drive the linkage rod to move.

Further, a front cover plate is arranged between the fixing device and the handle body.

The second purpose of the invention is to provide a household appliance, the technical scheme is as follows:

the household appliance comprises a door body and a box body, wherein the door body is provided with the hidden handle.

The third purpose of the invention is to provide a control method of a hidden handle, which adopts the following technical scheme:

a control method of a hidden handle comprises a handle body and a driving mechanism, wherein the driving mechanism controls the handle body to extend out or retract to be flush with a door body to be hidden after receiving a control signal.

Further, when the driving mechanism adopts a motor as driving power, the motor is connected with the main control board, and the main control board controls and outputs a control signal for extending or retracting the handle; or the main control board is provided with a handle control key, the signal output end of the handle control key is connected with the signal output end of the main control board, the signal output end of the main control board is connected with the signal output end of the motor, and the handle control key controls the handle to extend or retract through the main control board; or the signal output end of the handle control key is directly connected with the signal input end of the motor, and the handle control key directly controls the handle to extend or retract; or the signal output end of the main control board is connected with the signal input end of the motor, after the power is switched on, the main control board directly controls the motor to operate to drive the handle body to extend out, and after the power is switched off, the motor automatically rotates to withdraw the handle body; or the signal output end of the main control board is connected with the signal input end of the motor, after the power is switched on, the main control board directly controls the motor to operate to drive the handle body to extend, and when the program is completed, the motor automatically retracts the handle body after the door body is opened and closed again, and then the program is ended and the power is cut off.

In summary, the hidden handle, the household appliance and the control method of the hidden handle provided by the invention have the following advantages compared with the prior art:

1. the handle body is controlled to extend out or retract through the driving mechanism, and is level and hidden with the door body in a normal state, so that the household appliance has a better appearance, and the occupied space is saved;

2. the linkage mechanism drives the handle body to move, so that the two ends of the handle body move in a balanced manner, and the overall operation effect is improved;

3. the front cover plate is arranged to protect the driving mechanism, prevent accidental injury of a user and provide heat dissipation for the motor;

4. and the heat insulation material is arranged, so that the energy loss is reduced.

Description of the drawings:

FIG. 1: the invention discloses a hidden handle structure, which is shown in a schematic diagram I (without a front cover plate);

FIG. 2: the invention discloses a hidden handle structure diagram II (without a front cover plate);

FIG. 3: FIG. 1 is a sectional view taken along line A-A;

FIG. 4: the invention discloses a structure schematic diagram III of a hidden handle (comprising a front cover plate);

FIG. 5: the invention discloses a structure schematic diagram of a front cover plate in a hidden handle;

FIG. 6: the invention relates to a structure schematic diagram (back) of a handle body in a hidden handle;

FIG. 7: the invention discloses a hidden handle structure, which is shown in figure three (embodiment three);

FIG. 8: a fourth schematic view (embodiment three) of the structure of the hidden handle of the present invention;

FIG. 9: the invention provides a structure diagram of a hidden handle fifth (embodiment three).

The fixing device comprises a fixing device 1, a front plate 11, a supporting plate 12, a back plate 13, left and right side plates 14, a driving mechanism 2, a motor 21, a pinion 22, a large gear 23, a rotating shaft 24, a gear baffle plate 25, a motor mounting seat 26, a linkage mechanism 3, a driving rod 31, a driven rod 32, a driven shaft 33, a mounting seat 34, a fixing hole 35, a mounting groove 36, a door body 4, left and right frames 41, a front cover plate 5, an air vent 51, a screw seat 52, a slotted hole 53, a fixing baffle plate 54, a convex edge 55, an avoiding area 56, a back cover plate 6, a handle body 7, a connecting piece 71, a decoration piece 72, a torsion spring 8, a buckle 9 and.

Detailed Description

The invention is described in further detail below with reference to the following figures and detailed description.

The invention firstly provides a hidden handle, which is normally hidden in parallel with a door body 4 and can extend out in a use state, the handle is fixed with the door body 4 through a fixing device 1, the hidden handle comprises a handle body 7 and a driving mechanism 2, the driving mechanism 2 is installed on the fixing device 1, and the handle body 7 extends outwards or retracts to be parallel with the outer side of the door body 4 under the driving of the driving mechanism 2 so as to realize hiding.

Example one

Taking a steaming oven as an example, the specific structure of the hidden door handle and the fixed installation of the door body 4 provided by the invention are introduced. The hidden door handle provided by the invention can be installed at the end part of a three-layer glass door body 4 of the existing steaming and baking oven, the outer surface of the handle is flush with the outer surface of the door body 4 to be in a hidden state in a normal state, and after receiving an opening command, the handle extends outwards to form a holding space between the handle and the door body 4, so that the door body 4 is pulled open.

Taking the installation of a hidden handle and a door 4 of a steam oven as an example, the door 4 of the steam oven comprises three layers of glass arranged in parallel, a left frame 41, a right frame 41 and a top frame of the door 4, which is the prior art and is not required to be repeated, the difference lies in that the top height of the second layer of glass is lower than that of the other two layers of glass plates, the hidden handle is fixed with the door 4 through a fixing device 1, the fixing device 1 comprises a fixing seat, as shown in fig. 1 to 4, the fixing seat comprises a back plate 13, a support plate 12 and a front plate 11 connected in sequence, the included angle between the two adjacent plates is 90 degrees, or the included angle between the two adjacent plates is set according to the structural requirement, the back plate 13, the support plate 12 and the front plate 11 are integrally formed, the plates are sequentially bent into a Z-shaped structure, two sides of the support plate 12 are bent to form a left side plate 14 and a right side plate 14, the left frame 41 and the right frame, make fixing device 1 install in the space between the left and right frames 41 of the door body 4 and the top frame to when making the handle body 7 be in the shrink state, the surface of the handle body 7 and the surface parallel and level of foremost side glass, the back of backup pad 12 bottom and postnotum 13 is fixed with high-efficient insulation material, avoids the inside or heat between the adjacent two-layer glass board of box to dispel through backup pad 12, also reduces the temperature of the handle body 7 when reducing the inside calorific loss of box. A plurality of heat insulation collodions arranged at intervals are arranged between the back plate 13 and the innermost glass of the door body 4 of the steaming and baking oven.

The fixing device 1 is provided with a driving mechanism which is fixed with the handle body 7 and drives the handle body 7 to extend or retract, in the invention, electric drive is adopted, the driving mechanism comprises a single output motor 21, the motor 21 is fixed with a mounting seat 34 of the motor 21 at the top of the supporting plate 12, one side of the top of the mounting seat 34 of the motor 21 is provided with a gear baffle 25, an output shaft of the motor 21 passes through the gear baffle 25 and then is fixed with a pinion 22, a gearwheel 23 is meshed with the pinion 22, a rotating shaft 24 is fixed with a central hole of the gearwheel 23, the rotating shaft 24 comprises two parts which are mutually connected and integrally formed, the length direction of one part of the cylinder body is subjected to edge cutting treatment, so that the rotating shaft 24 forms a similar cylinder body structure with a D-shaped section, the sectional dimension of the similar cylinder body structure is matched with the central hole of the gearwheel 23, the other part of the rotating shaft 24, a limiting surface is formed, the cylinder-like structure of the rotating shaft 24 is inserted into the center of the large gear 23 until the limiting surface abuts against the end surface of the large gear 23, and the rotating shaft 24 and the large gear 23 are installed in place, so that the large gear 23 is limited between the side surface of the installation seat 34 of the motor 21 and the limiting surface of the rotating shaft 24, and the position of the large gear 23 is further limited. The matching of the center hole of the large gear 23 and the cylinder-like body of the rotating shaft 24 is only one embodiment of the rotating shaft 24 driven by the gear, so that the field installation is simple and labor-saving, in practical application, the fixing mode of the rotating shaft 24 and the large gear 23 can adopt any connecting and fixing mode in the prior art, and the rotation of the large gear 23 can drive the rotating shaft 24 to rotate.

The driving device 2 is connected with the linkage mechanism 3, the handle body 7 is driven to move through the linkage mechanism 3, and the linkage mechanism 3 comprises a linkage rod with one end fixed with the rotating shaft 24 and the other end fixed with the back of the handle body 7. As shown in fig. 1 to 4, two ends of the supporting plate 12 are respectively fixed with a mounting seat 34 having a mounting groove 36, one end of the linkage rod is disposed in the mounting groove 36, an end of the rotating shaft 24 passes through shaft holes on two side walls of the mounting groove 36 and can rotate in the shaft holes, one end of the linkage rod is fixed with the rotating shaft 24 in the mounting groove 36 and rotates under the driving of the rotating shaft 24, a fixing hole 35 which can match with the structure and size of the rotating shaft 24 is disposed at the end of the linkage rod, or a C-shaped groove is disposed, and the rotating shaft 24 is inserted into the mounting groove 36 and fixed with the linkage rod. In the present invention, two mounting slots 36 are disposed in parallel on the one-side mounting seat 34, two linkage rods are disposed in each mounting slot 36, both linkage rods can be fixed with the rotating shaft 24 and rotate under the driving of the rotating shaft 24, or one of the linkage rods is a driving rod 31, one end is fixed with the rotating shaft 24 in the mounting slot 36 and rotates under the driving of the rotating shaft 24, the other end is fixed with the back of the door 4, the other linkage rod is a driven rod 32, one end disposed inside the driving rod 31 (the side close to the motor 21) is fixed with the other mounting slot 36 through a driven shaft 33, so as to be fixed with the supporting plate 12 through the mounting seat 34, the other end is fixed with the back of the door 4, when the driving rod 31 rotates under the driving of the rotating shaft 24 to drive the handle body 7 to extend or retract, the handle body 7 simultaneously drives the driven rod 32 to rotate, the driven lever 32 serves to provide auxiliary power to balance the running track of the handle body 7. The driven rod 32 and the driving rod 31 have the same structure, so that the mold opening cost is reduced, the driven rod is of an L-shaped structure, the joint of the two side walls is rounded, the joint is in smooth transition, one side arm of the L-shaped structure is fixed with the rotating shaft 24 or the driven shaft 33, and the other side arm of the L-shaped structure is fixed with the handle body 7. Driven shaft 33 runs through two mounting grooves 36, both ends are fixed with two lateral walls in the outside of mounting groove 36 respectively, driven shaft 33 and pivot 24 parallel arrangement, the position height is different, and the relative pivot 24's in position of driven shaft 33 position direction more is close to the handle body 7, therefore, driven shaft 33 is when providing erection fixation position for driven lever 32, play the limiting displacement to driving lever 31, prevent that the rotation angle of driving lever 31 is too big, after the handle body 7 is opened, further play the supporting role to driving lever 31. An avoiding groove is formed in the position, corresponding to the active rod 31, of the rear back plate 13, the avoiding groove is used for avoiding rotation of the active rod 31, the circle guiding parts at the connecting positions of the arms on the two sides of the active rod 31 are located in the avoiding groove, and the avoiding groove provides enough rotation space. Since the driven shaft 33 is relatively close to the handle body 7, the overall position of the driven rod 32 moves towards the handle body 7, and therefore, a sufficient gap is left between the rear part of the driven rod 32 and the rear plate of the fixing device 1 for the driven rod 32 to rotate, an avoiding groove for the driven rod 32 to rotate is not required to be formed in the rear plate, and heat loss entering the handle body 7 from the interior of the box body and the interior of the door body 4 is reduced. In practical application, as shown in fig. 2, the driving mechanism may also adopt a dual-output motor 21, output shafts at two ends of the motor 21 are respectively fixed with a rotating shaft 24, one ends of the two rotating shafts 24 may be respectively fixed with the output shaft of the motor 21, or indirectly driven by the output shaft of the motor 21 to rotate through the large and small gears 22 engaged with each other as described above, and the other end is fixed with the linkage rod (the driving rod 31) through the mounting seat 34, and the mounting seat 34 and the linkage rod adopt the structure described above, which is not described again. The driving mechanism can be replaced by a common manual key and a remote lever structure in the prior art, or any technology which can drive the rotating shaft 24 to rotate and can appear in the future can be adopted, the requirement and the limitation are not required, meanwhile, the linkage lever can be arranged on one side or fixed with the central position of the handle body 7 only, and the handle body 7 can be driven to move, and the embodiment and the attached drawings provided by the invention can not be regarded as the limitation on the specific structure and the fixed position of the linkage mechanism 3.

The main body of the handle body 7 is a plate-shaped body in a common strip shape or other arbitrary shapes, and has the same shape as the outer surface of the door body 4, so that the handle body 7 forms an integral appearance with the outer surface of the door body 4 in a hidden state, as shown in fig. 6, a connecting piece 71 which can be fixed with the end part of the linking rod is fixed on the back surface (facing the interior of the box body) of the handle body 7, in the invention, the connecting piece 71 is two parallel round rods fixed on the back of the handle body 7, the length of the round rods is larger than the distance between the linkage rods on the two sides, the wavy decorative piece 72 is arranged outside the connecting piece 71, the upper part of the decorative piece 72 is thin and the lower part is thick, which accords with the human engineering and improves the use hand feeling of the user, the positions of the decorative part 72 corresponding to the linkage rods are provided with notches, the circular rods are exposed and fixed with the end parts of the linkage rods, and similarly, the end parts of the linkage rods can be fixed with the circular rods through holes or C-shaped grooves.

Between the handle body 7 and the fixing device 1, there is provided an arc-shaped front cover plate 5 capable of shielding the driving mechanism, in order to provide a larger hand holding space after the handle body 7 is extended, as shown in fig. 5, the front cover plate 5 has a backward curved arc, and the back has a plurality of screw seats 52, which are screwed with the back plate 13 of the fixing device 1, and support the front cover plate 5, increasing the strength of the front cover plate 5. The front cover plate 5 is provided with two groups of linkage rods, which are provided with slotted holes 53 for the linkage rods to extend out and to be fixed with the connecting piece 71 on the back of the handle body 7, the bottom positions of the slotted holes 53 are flush, however, because the positions of the driving rod 31 and the driven rod 32 are different, the lengths of the four slots 53 are different, the length of the slot 53 corresponding to the active lever 31 is shorter, and a fixed baffle 54 with a through hole is arranged at the position corresponding to the outer side wall of the mounting seat 34, the through hole is arranged concentrically with the rotating shaft 24 and/or the driven shaft 33, so that the end part of the rotating shaft 24 and/or the driven shaft 33 penetrates through the through hole, when in mounting, the fixing baffle plates 54 are respectively inserted and fixed with the mounting seats 34 arranged on the supporting plate 12 of the fixing device 1, the two ends of the rotating shaft 24 and/or the driven shaft 33 are inserted into the through holes after being arranged with interference with the main body of the fixing baffle plates 54, and can rotate in the through holes, and the front cover plate 5 and the rear plate are further fixed by screws. A plurality of vent holes 51 are provided in the cowl panel 5, and heat generated from the motor 21 is discharged through the vent holes 51. The bottom of the two fixing baffles 54 protrudes from the bottom of the front housing plate 5, and a convex edge 55 is arranged between the two fixing plates, so as to effectively shield the structure on the supporting plate 12, and prevent the user from contacting the linkage mechanism 3 when inserting the hand holding space of the handle body 7 from bottom to top. The convex edge 55 is provided with an avoiding area 56 at a position corresponding to the motor 21, so that the heat dissipation efficiency of the motor 21 is improved. The front cover plate 5 has a continuous backward and downward fixing flange on the top, the downward fixing flange is fixed with the back plate 13, the width of the backward fixing flange is related to the diameter of the motor 21 and the large/small gear 22, so that after the front cover plate 5 is fixed with the back plate 13, enough distance and space are left between the front cover plate 5 and the fixing device 1 for installing the linkage mechanism 3 and the driving mechanism. The front cover plate 5 has the same overall length as the overall width of the door 4, and has folded edges at the left and right ends, which are fixed to the outer sides of the left and right frames 41 of the door 4, respectively. When the door is installed, the left and right frames 41 of the door 4 are inserted between the folded edges of the left and right ends of the front cover plate 5 and then fixed by screws.

When in installation, the driving device 2 is fixed with the fixing device 1, the rotating shaft 24 is respectively connected with the linkage rod and the fixed seat, the fixed seat is fixed with the supporting plate 12, the other end of the linkage rod is fixed with the connecting piece 71 on the back of the handle body 7, the front plate 11 of the fixing device 1 is fixed with the installation structure (such as the top frame of the door body 4 or the similar structure) on the top of the front glass, the left and right side plates 14 are fixed with the inner sides of the left and right frames 41 of the door body 4, the front cover plate 5 is respectively fixed with the back plate 13 and the outer sides of the left and right frames 41 of the door body 4, so that the whole hidden handle and the door body 4 are installed into a whole, in order to improve the beauty, the air tightness and the heat preservation of the hidden handle and the door body 4, the gap between the top of the hidden handle, the top of the handle and the top of the frame of the door body, the vertical edge is fixed with the inner side of the innermost glass of the door body 4 of the steaming and baking oven. Be provided with a plurality of air vents 51 on vertical edge for steam between inboard glass and the middle glass is discharged inside with the steam ager through air vent 51, prevents to produce the comdenstion water between the glass, and air vent 51 need be dodged in setting up of thermal-insulated glued membrane, and does not block that steam is discharged inside the steam ager through air vent 51, and thermal-insulated glued membrane can set to the type of falling L, and the minor face of the L type is lapped with the top of the most inboard glass of the door body 4, and the long limit is located between the insulation material at most inboard glass and postnotum 13 or postnotum 13 back.

Example two

The difference with the first embodiment lies in, is not provided with interlock mechanism 3, and in this embodiment, actuating mechanism includes one or more synchronous machine 21, is connected with the telescopic link with motor 21 output, and the telescopic link is direct fixed with the back of the handle body 7, and motor 21 direct drive telescopic link is flexible, drives handle body 7 and stretches out or hide, and is the same, is provided with preceding cover plate 5 before actuating mechanism, and the handle is fixed with the door body 4 after, carries out final fixed and corresponding sheltering from through back cover plate 6.

EXAMPLE III

As shown in fig. 7, a hidden handle, a handle body is fixed to a door body 4 through a fixing device 1, one end of a linkage mechanism 3 is fixed to the fixing device 1, the other end of the linkage mechanism is fixed to the handle body 7, the door body is extended and retracted through a push spring mode, so that the handle extends out of the outer surface of the door body or is flush with the outer surface of the door body to be hidden, two ends of the linkage mechanism 3 are respectively provided with a set of linkage rods, taking one set of linkage rods as an example, each linkage rod comprises a driving rod 31 and a driven rod 32, the driving rod 31 and the driven rod 32 are respectively fixed to the top surface of a supporting plate 12 through two mounting seats 34 at a certain distance, the ends of the driving rod 31 and the driven rod 32 are respectively inserted into the mounting grooves 36 of the corresponding mounting seats 34, a torsion spring 8 is arranged between the two mounting seats 34, one end of the torsion spring 8 is fixed to the driving rod 31, the driving rod 31 can be driven to rotate, so as to push the handle body 7 to pop out or retract to hide.

Be provided with buckle 9 of mutually supporting between the handle body 7 and the fixing device 1, buckle 9 is for can peg graft fixed pin thread and box each other, respectively establish one on the handle body 7 and the fixing device 1, under the normality, torsional spring 8 is compression state, the pin thread is pegged graft fixedly with the box, make handle body 7 and door body 4 parallel and level, be in hidden state, when needing to open the handle, press handle body 7, the box breaks away from the pin thread, torsional spring 8 drives the rotation of drive lever 31 under the effect of spring force, handle body 7 outwards (the direction of keeping away from a body 4) pops out, when needing to hide the handle, push handle body 7 inwards, it is fixed to peg graft with the box up to pin thread and box.

In this embodiment, drive arrangement is not motor drive, but adopts 8 cooperation buckles of torsional spring to realize opening and hiding of the bullet formula that pushes away of the door body, pops out mode convenient operation, and whole outward appearance is succinct pleasing to the eye. Similarly, in the present embodiment, a driven lever 32 is further provided beside the driving lever 31, and one end of the driven lever 32 is fixed to the handle body 7, and the other end is fixed to the fixing device 1 through a mounting seat 34. The fixing device 1 and the handle body 7 are as described in the first embodiment. In the embodiment, two installation seats 34 on the same side each have one installation groove 36, and the torsion spring 8 is disposed between the two installation seats 34, and the installation seat 34 having two installation grooves 36 as described in the first embodiment may also be adopted, and the torsion spring is disposed outside the installation groove 36 for fixing the driving rod 32 and fixed with the end of the driving rod 31. In order to ensure the synchronous movement of the two ends of the handle body, the two torsion springs are connected through a connecting rod 10, or the two torsion springs 8 are in an integral structure.

As shown in fig. 8, the buckle for fixing the handle body 7 and the fixing device 1 is disposed at the middle position of the back plate 13, and the two torsion springs 8 are connected by the connecting rod 10, or the two torsion springs 8 are integrated and disposed outside the mounting seat 34. Or as shown in fig. 9, the buckle 9 is fixed at a position of the back plate 13 close to the linkage rod.

In the three embodiments provided by the present invention, the specific structure of the hidden handle and the installation and fixation of the door body 4 are described by taking the hidden handle and the top of the steaming and baking oven door body 4 with three layers of glass as an example, but the specific structure, the fixation mode and the application range of the hidden handle are not considered to be limited. The hidden handle can also be applied to various household appliances needing to be provided with handles, such as disinfection cabinets, dish washing machines, refrigerators, freezers and the like, the door body 4 is not limited to the three-layer glass door body 4, the common foaming door body 4 or door bodies 4 with other structures, the door body 4 can be installed and fixed by processing the same as the three-layer glass door body 4, and according to different household appliances needing to be installed, the forms of the structures are finely adjusted to determine whether the heat insulation materials at the supporting plate 12 and the back plate 13 are used or not, and whether or not the ventilation holes 51 need to be arranged on the vertical edges of the back cover plate 6, if the door body 4 is applied on the door body 4 of a refrigerator or a freezer, the ventilation holes do not need to be arranged on the vertical edges of the back cover plate 6, however, sufficient heat insulating material needs to be filled and fixed between the vertical edge of the back cover plate 6 and the back plate 13, so that the cold energy in the refrigerator or freezer is prevented from being conducted and dissipated through the structures such as the back cover plate 6, the back plate 13 and the like.

Hide the handle and at the normal attitude down with 4 surface parallel and levels of a body, make 4 outward appearances of a body cleaner and tidier, the transportation of packing of also being convenient for, after receiving the opening signal, stretch out to the outside by actuating mechanism drive interlock mechanism 3 and then drive the handle body 7, supply the user to grip the handle body 7, pull out the door body 4. After receiving the signal again, the hidden handle is driven by the driving mechanism and the linkage mechanism 3 to contract back to the original position, and is flush with the door body 4 to form a hidden state. When the driving mechanism adopts the motor 21 as driving power, the motor 21 can be connected with a main control board of the steaming and baking oven, and a control signal is controlled and output by the main control board, or a handle control key is arranged on the main control board, a signal output end of the handle control key is connected with a signal output end of the main control board, a signal output end of the main control board is connected with a signal output end of the motor 21, or a signal output end of the handle control key is directly connected with a signal input end of the motor 21, after the power-on operation, the handle control key is pressed, the motor 21 operates, the pinion 22 drives the meshed gearwheel 23 to rotate, and then the rotating shaft 24 is driven to rotate, and the hidden handle is extended or retracted by the linkage mechanism 3 under the driving of; or a handle control key is not needed to be arranged, the signal output end of the main control board is connected with the signal input end of the motor 21, after the steaming and baking oven is powered on to operate, the main control board directly controls the motor 21 to operate, so that the handle body 7 extends out as described above, the temperature of the handle body 7 is prevented from rising due to heat dissipated by the door body 4, bad experience is brought to a user, after the power is off, the motor 21 automatically rotates to withdraw the handle body 7, or the signal output end of the main control board is connected with the signal input end of the motor 21, after the power is on, the main control board directly controls the motor 21 to operate to drive the handle body 7 to extend out, when the program is completed, after the door body 4 of the steaming and baking oven is opened and closed again, the program is finished and the power is turned off, and. In practical application, the required control method or combination of several control methods can be selected by combining the various control methods described above.

Similar solutions can be derived as described above in connection with the given solution content. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A hidden handle, its characterized in that: the handle is normally flush with the door body and hidden, and can extend out in the use state.

2. The concealed handle according to claim 1, wherein: the handle is fixed with the door body through a fixing device and comprises a handle body and a driving mechanism, wherein the driving mechanism is installed on the fixing device, and the handle body extends outwards or retracts to be flush with the outer side of the door body under the driving of the driving mechanism so as to be hidden.

3. The concealed handle according to claim 2, wherein: the fixing device comprises a rear back plate, a supporting plate and a front plate which are sequentially connected into a Z shape, wherein a left side plate and a right side plate are arranged on two sides of the supporting plate, the front plate is fixed with a top frame of the door body, and the left side plate and the right side plate are fixed with the inner sides of the left frame and the right frame of the door body.

4. The concealed handle according to claim 3, wherein: the driving device is fixed on the top of the supporting plate.

5. The concealed handle according to claim 2, wherein: the handle further comprises a linkage mechanism, one end of the linkage mechanism is fixed with the driving mechanism, the other end of the linkage mechanism is fixed with the back of the handle body, and the driving mechanism drives the handle body to extend out or retract and hide under the action of the linkage mechanism.

6. The concealed handle according to claim 5, wherein: the driving mechanism comprises a motor and a rotating shaft driven by the motor, the rotating shaft is fixed with the linkage mechanism, and the linkage mechanism is driven by the motor to move.

7. The concealed handle according to claim 6, wherein: an output shaft of the motor is fixed with the small gear, the large gear is meshed with the small gear, and the rotating shaft is fixed with a central hole of the large gear.

8. The concealed handle according to claim 5, wherein: the linkage mechanism comprises a linkage rod, one end of the linkage rod is fixed with the rotating shaft, and the other end of the linkage rod is fixed with the back of the handle body.

9. The concealed handle according to claim 8, wherein: the linkage rod comprises a driving rod and a driven rod, one end of the driving rod is fixed with the rotating shaft, and one end of the driven rod is fixed with the supporting plate.

10. The concealed handle according to claim 8, wherein: the fixing device is provided with an installation seat with an installation groove, and the rotating shaft penetrates through the side wall of the installation groove and is fixed with one end of the linkage rod in the installation groove and can drive the linkage rod to move.

11. The concealed handle according to claim 2, wherein: a front cover plate is arranged between the fixing device and the handle body.

12. The utility model provides a household electrical appliances, includes door body and box, its characterized in that: the door body is provided with a hidden handle as claimed in any one of claims 1 to 11.

13. A control method of a hidden handle is characterized in that: the handle comprises a handle body and a driving mechanism, and after receiving a control signal, the driving mechanism controls the handle body to extend out or retract to be flush with the door body and be hidden.

14. The method of claim 14, wherein the step of controlling the concealed handle comprises: when the driving mechanism adopts a motor as driving power, the motor is connected with the main control board, and the main control board controls and outputs a control signal for extending or retracting the handle; or the main control board is provided with a handle control key, the signal output end of the handle control key is connected with the signal output end of the main control board, the signal output end of the main control board is connected with the signal output end of the motor, and the handle control key controls the handle to extend or retract through the main control board; or the signal output end of the handle control key is directly connected with the signal input end of the motor, and the handle control key directly controls the handle to extend or retract; or the signal output end of the main control board is connected with the signal input end of the motor, after the power is switched on, the main control board directly controls the motor to operate to drive the handle body to extend out, and after the power is switched off, the motor automatically rotates to withdraw the handle body; or the signal output end of the main control board is connected with the signal input end of the motor, after the power is switched on, the main control board directly controls the motor to operate to drive the handle body to extend, and when the program is completed, the motor automatically retracts the handle body after the door body is opened and closed again, and then the program is ended and the power is cut off.