CN111287561A - Linkage mechanism of hidden handle - Google Patents

Abstract

The invention provides a linkage mechanism of a hidden handle. The handle includes a handle body and a fixing device. One end of the linkage mechanism is fixed with the handle body, and the other end is fixed with the fixing device. Under the action of external force , and drive the handle body to extend or retract to realize the extension or concealment of the handle. The linkage mechanism of the hidden handle provided by the present invention can make the handle extend or hide by telescopic extension, reduce the space occupied by the handle, and make the overall appearance of the door body more beautiful.

Description

A linkage mechanism of a hidden handle

technical field

The invention belongs to the technical field of household appliances, in particular to a linkage mechanism of a hidden handle of the household appliance.

Background technique

At present, most home appliances with storage space, such as the door handles of steam ovens and sterilization cabinets, are usually fixed to the outer surface of the door through the handle seat, and the entire handle extends outside the door body, giving people an abrupt feeling and affecting the overall appearance of the product. , and when placed in the kitchen, the handle protruding from the surface of the door body will additionally occupy the limited space of the kitchen, reducing the user's activity space in the kitchen.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to solve the above problems and deficiencies, and to provide a linkage mechanism that can drive the handle to extend and retract to hide or extend the handle.

In order to achieve the above purpose, the present invention provides a linkage mechanism of a hidden handle, and its technical scheme is:

A linkage mechanism of a hidden handle, the handle includes a handle body and a fixing device, one end of the linkage mechanism is fixed with the handle body, and the other end is fixed with the fixing device, and under the action of an external force, the linkage mechanism drives the The handle body is retractable to extend or hide the handle.

Further, the linkage mechanism includes a linkage rod, one end of the linkage rod is fixed with the handle body, and the other end is fixed with the fixing device, and can be rotated around a fixed point under the action of an external force to drive the handle. Body expansion.

Further, the fixing device is provided with a mounting seat with a mounting groove, and the other end of the linkage rod is inserted into the mounting groove and fixed with the rotating shaft in the mounting groove, and the rotating shaft drives the rotating shaft under the action of external force. The linkage rod rotates.

Further, the linkage rod includes an active rod and a driven rod whose one end is fixed to the back of the handle body, and the other ends of the active rod and the driven rod are respectively fixed with the fixing device, and the active rod can be Under the action of external force, it rotates around a fixed point, thereby driving the handle body to expand and contract and the driven rod to rotate around the fixed point.

Further, the fixing device is provided with a mounting seat with a mounting groove, and the other end of the linkage rod is inserted into the mounting groove to be fixed to the rotating shaft, and the rotating shaft drives the linkage rod to rotate under the action of external force, so The other end of the driven rod is fixed with the driven shaft on the mounting seat, and can rotate around the driven shaft.

Further, the fixing device is provided with a mounting seat, the mounting seat has two mounting grooves arranged in parallel, one of the mounting grooves is provided with a rotating shaft that can rotate under the action of an external force, and the other is provided with a rotating shaft. A driven shaft is arranged inside, one end of the active rod is fixed with the rotating shaft, and one end of the driven rod is fixed with the driven shaft.

Further, the active rod is fixed to the rotating shaft in the outer mounting groove.

Further, in the installation groove, the position of the driven shaft is higher than the position of the rotating shaft.

Further, the fixing device is provided with a driving mechanism, the driving mechanism includes a motor and a rotating shaft driven by the motor, the end of the rotating shaft is fixed with the linkage mechanism, and is driven by the motor. The lower part drives the linkage mechanism to move.

Further, the fixing device is provided with an installation seat, the installation seat has two installation grooves arranged in parallel, the rotating shaft passes through the two installation grooves, and the linkage mechanism includes a driving rod and a driven rod, The end of the active rod is fixed with the rotating shaft in one of the installation grooves and can be driven to rotate by the rotating shaft, and the other installation groove is provided with a driven shaft, and the end of the driven rod is connected to the shaft. The driven shaft is fixed and can rotate around the driven shaft under the driving of the handle body.

To sum up, the linkage device of a hidden handle provided by the present invention has the following advantages compared with the prior art:

1. Under the control of external force or driving mechanism, the linkage mechanism can drive the handle to extend or retract, and it is hidden flush with the door body under normal conditions, so that home appliances have a better appearance and save space;

2. The movement of the handle body is driven by the linkage mechanism, so that the two ends of the handle body move in a balanced manner and improve the overall operation effect.

Description of drawings:

Figure 1: Schematic diagram 1 of the overall structure of the handle in the linkage mechanism of a hidden handle of the present invention (without front cover);

Figure 2: The second schematic diagram of the overall structure of the handle in the linkage mechanism of a hidden handle of the present invention (without front cover);

Figure 3: A-A sectional view of Figure 1;

Figure 4: Schematic diagram three of the overall structure of the handle in the linkage mechanism of a hidden handle of the present invention (including the front cover);

Figure 5: A schematic diagram of the structure of the front cover in the linkage mechanism of a hidden handle of the present invention;

Figure 6: A schematic diagram of the structure of the handle body in the linkage mechanism of a hidden handle of the present invention (back);

Figure 7: Intention 3 of the overall structure of the handle in the linkage mechanism of a hidden handle of the present invention (Embodiment 3);

Fig. 8: Schematic diagram 4 of the overall structure of the handle in the linkage mechanism of a hidden handle of the present invention (Embodiment 3);

FIG. 9 is a fifth schematic diagram of the overall structure of the handle in a linkage mechanism of a hidden handle of the present invention (Embodiment 3).

Among them, the fixing device 1, the front plate 11, the support plate 12, the back plate 13, the left and right side plates 14, the driving mechanism 2, the motor 21, the pinion 22, the large gear 23, the rotating shaft 24, the gear baffle 25, the motor mounting seat 26. Linkage mechanism 3, active rod 31, driven rod 32, driven shaft 33, mounting seat 34, fixing hole 35, mounting groove 36, door body 4, left and right frames 41, front cover 5, ventilation hole 51, Screw base 52 , slot 53 , fixed baffle 54 , raised edge 55 , avoidance area 56 , rear cover 6 , handle body 7 , connecting piece 71 , decorative piece 72 , torsion spring 8 , buckle 9 , connecting rod 10 .

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

The present invention provides a linkage mechanism 3 of a hidden handle. The handle includes a handle body 7 and a fixing device 1. One end of the linkage mechanism 3 is fixed with the handle body 7, and the other end is fixed with the fixing device 1. Under the action of external force, it drives The handle body 7 is telescopic to realize the extension or concealment of the handle.

Example 1

Taking a steam oven as an example, the specific structure of the linkage mechanism of a hidden door handle provided by the present invention and the fixed installation with the door body 4 are introduced. A hidden door handle, which can be installed with the end of the triple-layer glass door body 4 of the existing steam oven, and the outer surface of the handle is flush with the outer surface of the door body 4 under normal conditions and is in a hidden state. Afterwards, it is extended outward to form a holding space between the handle and the door body 4, and the door body 4 is pulled open.

As shown in FIGS. 1 to 4 , taking the installation of the hidden handle and the oven door 4 as an example, the oven door 4 includes three layers of glass arranged in parallel, the left and right frames 41 of the door 4 and the top frame, which are the existing Technology, no requirements and details, the difference is that the top of the second layer of glass is lower than the other two layers of glass panels, and the hidden door handle is fixed with the door body 4 through the fixing device 1, and the fixing device 1 includes a fixing seat, as shown in Figure 1 , including the back plate 13, the support plate 12 and the front plate 11 connected in sequence, the angle between the two adjacent plates is 90°, or the angle between the two adjacent plates is set according to the structural needs, 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, the two sides of the support plate 12 are bent to form the left and right side plates 14, and the left and right side plates 14 are screwed to the left and right frames 41 of the door body 4. The front plate 11 is fixed to the inner side of the top frame of the door body 4 (it can be a similar structure when the door body 4 frame is not provided), so that the fixing device 1 is installed in the space between the left and right frames 41 of the door body 4 and the top frame, When the handle body 7 is in a retracted state, the outer surface of the handle body 7 is flush with the outer surface of the frontmost glass, and the bottom of the support plate 12 and the back of the back plate 13 are fixed with high-efficiency thermal insulation materials to prevent the interior of the box or the The heat between the adjacent two layers of glass plates is dissipated through the support plate 12 , which reduces the heat loss inside the box and also reduces the temperature of the handle body 7 . Between the back panel 13 and the innermost glass of the oven door body 4 , a plurality of heat-insulating rubber cottons are arranged at intervals. It should be noted that the fixing device 1 can be a structure formed by bending a plate as described above, and is separately fixed to the door body 4, or the existing structure of the frame of the door body 4 can be directly used, and the linkage mechanism 3 is used in this paper. Other related structures are fixed on the frame of the door body 4 .

The fixing device 1 is provided with a drive mechanism that is fixed to the handle body 7 and drives the handle body 7 to extend or retract. In the present invention, electric drive is adopted, and the drive mechanism includes a single output motor 21, the motor 21 and the top motor of the support plate 12. 21 The mounting seat 34 is fixed, the top side of the motor 21 mounting seat 34 is provided with a gear baffle 25, the output shaft of the motor 21 passes through the gear baffle 25 and is fixed to the pinion 22, the large gear 23 meshes with the pinion 22, and the rotating shaft 24 is connected to the pinion 22. The center hole of the large gear 23 is fixed, and the rotating shaft 24 includes two parts that are connected to each other and integrally formed, and a part of the cylindrical body is trimmed in the length direction, so that this part of the rotating shaft 24 forms a D-shaped cross-section. The cross-sectional size of the structure is matched with the central hole of the large gear 23, and the other part of the rotating shaft 24 is a cylinder, and the junction between the edge-cutting structure of the cylindrical structure and the cylindrical body forms a limit surface, and the cylindrical structure of the rotating shaft 24 is formed. Insert the center of the large gear 23 until the limit surface touches the end face 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 mounting seat 34 of the motor 21 and the limit surface of the rotating shaft 24, The position of the bull gear 23 is further defined. The cooperation between the central hole of the large gear 23 and the cylindrical body of the rotating shaft 24 is only an example of the gear driving the rotating shaft 24 to rotate, which can make the on-site installation easy and labor-saving. In practical applications, the fixing method of the rotating shaft 24 and the large gear 23 can be adopted Any connection and fixing method in the prior art can be used so that the rotation of the large gear 23 can drive the rotation of the rotating shaft 24 .

The driving device 2 is connected with the linkage mechanism 3, and the linkage mechanism 3 drives the handle body 7 to move. As shown in FIG. 1 , at both ends of the support plate 12 , a mounting seat 34 with a mounting groove 36 is fixed, one end of the link rod is set in the mounting groove 36 , and the end of the rotating shaft 24 passes through the mounting groove 36 . The shaft holes on the two side walls can be rotated in the shaft holes. One end of the linkage rod is fixed with the rotating shaft 24 in the installation groove 36, and is rotated under the driving of the rotating shaft 24. The rotating shaft 24 has a fixing hole 35 with matching structure and size, or a C-shaped groove, and the rotating shaft 24 is inserted into the installation groove 36 to be fixed with the linkage rod. In the present invention, two mounting grooves 36 are arranged in parallel on the single-side mounting seat 34, and there are two interlocking rods. Each mounting groove 36 is provided with one interlocking rod. The two interlocking rods can both be connected to the rotating shaft. 24 is fixed, and rotates under the driving of the rotating shaft 24, or one of the interlocking rods is an active rod 31, which is arranged on the outside, one end is fixed with the rotating shaft 24 in the installation groove 36, and is rotated under the driving of the rotating shaft 24, and the other end is connected with the door. The back of the body 4 is fixed, and the other link rod is a driven rod 32, which is arranged on the inner side of the active rod 31 (the side close to the motor 21) and one end is fixed by the driven shaft 33 and another installation slot 36, so that it can be installed over the The seat 34 is fixed with the support plate 12, and the other end is fixed with the back of the door body 4. When the active rod 31 rotates under the driving of the rotating shaft 24, it drives the handle body 7 to extend or contract, and the handle body 7 drives the driven rod 32 to generate When rotated, the driven rod 32 plays the role of providing auxiliary power and balancing the running track of the handle body 7 . The structure of the driven rod 32 and the driving rod 31 is the same, which reduces the cost of mold opening. It is an L-shaped structure. The connection between the two side walls is rounded to make the connection smooth transition. The L-shaped side arm is connected to the rotating shaft 24 or driven The shaft 33 is fixed, and the other arm is fixed to the handle body 7 . The driven shaft 33 penetrates through the two installation grooves 36 , and the two ends are respectively fixed to the two outermost side walls of the installation groove 36 . The driven shaft 33 is arranged in parallel with the rotating shaft 24 , the positions are different, and the positions of the driven shaft 33 are opposite to each other. The position of the rotating shaft 24 is closer to the direction of the handle body 7. Therefore, the driven shaft 33 provides a fixed position for the driven rod 32 to be installed, and at the same time, it acts as a limiter for the driving rod 31 to prevent the rotation angle of the driving rod 31 from being too large. Large, after the handle body 7 is opened, it further supports the active rod 31 . At the position of the back panel 13 corresponding to the active rod 31, there is an avoidance groove for the rotation of the active rod 31. The guide circle at the connection between the arms on both sides of the active rod 31 is located in the avoidance groove, and the avoidance groove provides enough space for rotation. Since the position of the driven shaft 33 is relatively close to the handle body 7 , the overall position of the driven rod 32 is moved toward the handle body 7 . Therefore, there is enough space between the rear of the driven rod 32 and the rear plate of the fixing device 1 . Therefore, there is no need to provide an escape groove for the rotation of the driven rod 32 on the rear panel, thereby reducing the heat loss from the inside of the box body and the interior of the door body 4 to the handle body 7 . In practical applications, as shown in FIG. 2 , the driving mechanism can also use dual-output motors 21 , a rotating shaft 24 is fixed on each of the output shafts at both ends of the motor 21 , and one end of the two rotating shafts 24 can be respectively fixed with the output shafts of the motor 21 . , or indirectly driven to rotate by the output shaft of the motor 21 through the large and small gears 22 that mesh with each other as described above, and the other end is fixed by the mounting seat 34 and the linkage rod (active rod 31), and the mounting seat 34 and the linkage rod are as described above. The structure described above will not be repeated. The drive mechanism can also be replaced by the commonly used manual button and joystick structure in the prior art, or any technology that may appear in the future that can drive the rotation shaft 24 to rotate, without requirements and restrictions, and the linkage rod can also be only on one side. It can be set or fixed at the center of the handle body 7, and the handle body 7 can be driven to move.

It should be noted that, in this embodiment, the linkage mechanism 3 includes two sets of linkage rods arranged at both ends of the fixing device 1 , and a set of active rods 31 and driven rods 32 are provided on both sides, as well as a matching mounting seat. 34 and the driven shaft 33, the driven shaft 33 can be arranged only on the mounting groove 36 for fixing the driven rod 32, or as shown in Figs. In practical applications, the number of groups of active rods 31 and driven rods 32 on the linkage mechanism 3 and the respective numbers of each group of active rods 31 and driven rods 32 can be determined according to the length of the door body 4 . The driven rod 32 may not be provided, and only one or more active rods are provided at both ends of the rotating shaft 24. According to the change of the form of the linkage mechanism 3, the structure of the mounting seat 34 and the mounting groove 36 can be changed adaptively. In order to provide a limit for the operation of the driving rod 31, the original driven shaft 33 is not cancelled. At this time, the driven shaft 33 only acts as a limiter.

As shown in FIG. 6 , the main body of the handle body 7 is an ordinary strip-shaped or plate-shaped body of any other shape, and has the same shape as the outer surface of the door body 4 , so that the handle body 7 is in the hidden state, and the outer surface of the door body 4 is in the same shape. Forming an integrated appearance, a connector 71 that can be fixed with the end of the link rod is fixed on the back of the handle body 7 (towards the inside of the box). The round rods are arranged in parallel, the length of the round rod is greater than the distance between the linkage rods on both sides, and outside the connecting piece 71, a wavy decorative piece 72 is arranged, the top of the decorative piece 72 is thin and the bottom is thick, which is ergonomic , to improve the user's feeling of use, a gap is set at the position of the decorative piece 72 corresponding to each link rod, the round rod is exposed, and it is fixed with the end of the link rod. Similarly, the end of the link rod can pass through the hole or C The groove is fixed with the round rod.

Between the handle body 7 and the fixing device 1, an arc-shaped front cover plate 5 that can cover the driving mechanism is arranged to provide a larger holding space for the handle body 7 after it is extended. As shown in FIG. 5, the front cover plate 5 has a backward curved arc, and has a plurality of screw seats 52 on the back, which are screwed to the back plate 13 of the fixing device 1 , and support the front cover 5 to increase the strength of the front cover 5 . At the positions corresponding to the two sets of interlocking rods on the front cover plate 5, there are slot holes 53 for the interlocking rods to extend so as to be fixed with the connector 71 on the back of the handle body 7. The bottom positions of each slotted hole 53 are flush, but Because the positions of the driving rod 31 and the driven rod 32 are different, the lengths of the four slot holes 53 are different, and the length of the slot holes 53 corresponding to the driving rod 31 is shorter. At the position corresponding to the outer wall of the mounting seat 34, A fixed baffle 54 with a through hole is provided, and the through hole is arranged concentrically with the rotating shaft 24 and/or the driven shaft 33, so that the ends of the rotating shaft 24 and/or the driven shaft 33 pass through the through hole. During installation, the fixed baffle is 54 are respectively inserted and fixed with the mounting seat 34 provided on the support plate 12 of the fixing device 1, and the two ends of the rotating shaft 24 and/or the driven shaft 33 are inserted into the through hole after interference installation with the main body of the fixed baffle 54, and can be inserted into the through hole. Rotate in the through hole, and further fix the front cover plate 5 and the rear plate with screws. The front cover 5 is provided with a plurality of ventilation holes 51 , and the heat generated by the motor 21 is discharged through the ventilation holes 51 . The bottoms of the two fixed baffles 54 protrude from the bottom of the front cover 5, and between the two fixed plates, a raised edge 55 is provided, which effectively shields the structure on the support plate 12 and prevents the user from inserting from bottom to top. When the grip space of the handle body 7 is in contact with the interlocking mechanism 3 . An avoidance area 56 is provided at the position of the raised edge 55 corresponding to the motor 21 , so as to improve the heat dissipation efficiency of the motor 21 . The top of the front cover plate 5 has continuous backward and downward fixed folds, the downward fixed folds are fixed with the back plate 13 , and the width of the rearward fixed folds is the same as that of the motor 21 and the large/pinion gear 22 . In relation to the diameter, after the front cover 5 and the rear panel 13 are fixed, there is sufficient distance and space between the front cover 5 and the fixing device 1 to install the linkage mechanism 3 and the drive mechanism. The overall length of the front cover 5 is equal to the overall width of the door body 4 , and the left and right ends are provided with folds, which are respectively fixed to the outer sides of the left and right frames 41 of the door body 4 . During installation, the left and right frames 41 of the door body 4 are inserted between the folded edges of the left and right ends of the front cover plate 5, and then fixed with screws.

During installation, fix the driving device 2 and the fixing device 1, and then connect the rotating shaft 24 to the linkage rod and the fixed seat respectively, and fix the fixed seat to the support plate 12. The other end of the linkage rod is connected to the connecting piece on the back of the handle body 7. 71 is fixed, and then the front plate 11 of the fixing device 1 is fixed to the installation structure on the top of the frontmost glass (such as the top frame of the door body 4 or a similar structure), the left and right side plates 14 are fixed to the inner side of the left and right frames 41 of the door body 4, and the front cover plate 5 are respectively fixed to the outside of the back panel 13 and the left and right frames 41 of the door body 4, so that the entire hidden handle and the door body 4 are installed into one body. Further, the top of the hidden handle, the gap between the top of the handle and the top of the frame of the door body 4 are covered by the inverted L-shaped rear cover plate 6. The L-shaped horizontal side can be fixed with the top of the front cover 5, and the vertical side is The inner side of the innermost glass of the oven door body 4 is fixed. A plurality of ventilation holes 51 are arranged on the vertical sides, which are used to discharge the hot air between the inner glass and the middle glass through the ventilation holes 51 to the inside of the steam oven to prevent condensation water from being generated between the glasses. Avoid the ventilation hole 51, and do not prevent the hot air from being discharged into the oven through the ventilation hole 51. The thermal insulation rubber cotton can be set into an inverted L shape. The short side of the L shape overlaps with the top of the innermost glass of the door body 4, and the long side is located Between the innermost glass and the back panel 13 or the thermal insulation material on the back of the back panel 13 .

Embodiment 2

The difference from the first embodiment is that the drive mechanism 2 powered by the motor is not provided, and the linkage mechanism 3 is directly acted by an external force, thereby driving the handle body 7 to move. A rotating shaft 24 is arranged in the installation groove 36 , and an external force acts on the rotating shaft 24 to force the rotating shaft 24 to rotate. The external force action method can adopt a structure, such as touching the button, a support rod that can drive the rotating shaft 24 is arranged on the door body 4 or the handle body, pressing the touch button, the support rod will transmit the applied external force to the rotating shaft 24, forcing the rotating shaft 24 to rotate, and then driving the rotating shaft 24. The linkage mechanism 3 and the handle body 4 are telescopic to achieve the extension or concealment of the handle. The touch buttons and support rods for providing external force can adopt structures commonly used in the prior art, and there are no requirements or limitations here. The mounting seat 34 provided on the fixing device has the same structure as that in the first embodiment, and can also have two parallel mounting grooves 36, one of which is provided with the rotating shaft 24, and the other mounting groove, whose relative position is higher than At the position of the rotating shaft 24, a driven shaft 33 is provided, or as shown in FIG. 1 to FIG. 3, the driven shaft 3 and the rotating shaft 24 can pass through two installation grooves 36, and the two ends of the fixing device 1 are symmetrically arranged with a set of installation The seat 34 and the corresponding linkage mechanism 3, the rotating shaft 24 passes through the four installation grooves 36 of the two mounting bases 34, the touch buttons and the support rods are also two groups, which can be respectively arranged on both sides of the fixing device 1 to exert force on the rotating shaft 24. , or set in the middle position of the handle, exert force on the middle position of the rotating shaft 24, and drive the linkage rods on both sides to operate.

Embodiment 3

As shown in FIG. 7, a hidden handle, the handle body is fixed with the door body 4 through the fixing device 1, one end of the linkage mechanism 3 is fixed with the fixing device 1, and the other end is fixed with the handle body 7, and the door is realized by pushing the bomb. The expansion and contraction of the body makes the handle protrude from the outer surface of the door or be flush with the outer surface of the door to realize hiding. Both ends of the linkage mechanism 3 are provided with a set of linkage rods. Taking one of the linkage rods as an example, the linkage rods include The active rod 31 and the driven rod 32 are respectively fixed to the top surface of the support plate 12 through two mounting seats 34 separated by a certain distance, and the ends of the active rod 31 and the driven rod 32 are inserted into the In the mounting groove 36 of the corresponding mounting seat 34, a torsion spring 8 is arranged between the two mounting seats 34. One end of the torsion spring 8 is fixed with the active rod 31, and the other end is fixed with the handle body 7. The torsion spring 8 rotates under the action of the spring force. At the time, the active rod 31 can be driven to rotate, thereby pushing the handle body 7 to pop up or retract to hide.

The handle body 7 and the fixing device 1 are provided with a buckle 9 that cooperates with each other. The buckle 9 is a male buckle and a female buckle that can be inserted and fixed with each other. One is provided on the handle body 7 and the fixing device 1. The spring 8 is in a compressed state, the male buckle and the female buckle are inserted and fixed, so that the handle body 7 is flush with the door body 4 and is in a hidden state. When the handle needs to be opened, press the handle body 7, the female buckle is released from the male buckle, and the torsion spring 8 Under the action of the spring force, the active rod 31 is driven to rotate, and the handle body 7 pops out outward (the direction away from the door body 4). When the handle needs to be hidden, push the handle body 7 inward until the male and female buckles are inserted fixed.

In this embodiment, the driving device is not driven by a motor, but uses the torsion spring 8 to cooperate with the buckle to realize the push-pull opening and hiding of the door. The pop-up method is easy to operate, and the overall appearance is simple and beautiful. Similarly, in this embodiment, a driven rod 32 is also provided beside the active rod 31 . The fixing device 1 and the handle body 7 are as described in the first embodiment. In the embodiment, the two mounting bases 34 on the same side each have one mounting groove 36, and the torsion spring 8 is arranged between the two mounting bases 34. The mounting base with two mounting grooves 36 as described in the first embodiment can also be used 34. The torsion spring is arranged outside the mounting groove 36 for fixing the driving rod 32, and is fixed with the end of the driving rod 31. In order to ensure the synchronous movement of both ends of the handle body, the two torsion springs are connected by a connecting rod 10, or the two torsion springs 8 are integrated.

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

In the three embodiments provided by the present invention, the specific structure of the concealed handle provided by the present invention and the installation and fixation with the door body 4 are introduced by taking the fixing of the hidden handle to the top of the oven door body 4 of triple-glazed glass as an example. However, it should not be regarded as a restriction on the specific structure, fixing method and application range of the hidden handle. In practical application, the handle body 7 can be fixed to the bottom of the oven door body 4, and the structure remains unchanged. The door body 4 is installed at the bottom. The hidden handle can also be applied to various household appliances such as disinfection cabinets, dishwashers, refrigerators, and freezers that require handles. The door body 4 is not limited to the three-layer glass door body 4, the ordinary foam door body 4 or other structures. The door body 4 can be installed and fixed, and the door body 4 can be installed and fixed by the same treatment as the three-layer glass door body 4, and according to the different household appliances to be installed, the shape of each structure is fine-tuned, and the supporting plate 12, the rear Whether the thermal insulation material at the back panel 13 is used, and whether ventilation holes 51 need to be provided on the vertical side of the back cover panel 6. For example, when the door body 4 is applied to the door body 4 of a refrigerator or a freezer, it is not necessary to install the vertical side of the back cover panel 6. Ventilation is provided on the side, but it is necessary to fill and fix enough thermal insulation material between the vertical edge of the back cover 6 and the back panel 13 to prevent the cooling capacity inside the refrigerator or freezer from passing through the back cover 6, the back panel 13 and other structures. conduction loss.

The hidden handle is flush with the outer surface of the door body 4 under normal conditions, so that the appearance of the door body 4 is more neat, and it is also convenient for packaging and transportation. The actuating mechanism 3 further drives the handle body 7 to extend outward, so that the user can hold the handle body 7 and 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 shrink back to its original position, and is flush with the door body 4 to form a hidden state. When the driving mechanism adopts the motor 21 as the driving power, the motor 21 can be connected to the main control board of the oven, and the main control board controls the output control signal, or the main control board is provided with a handle control key, and the signal output end of the handle control key It 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 21, or the signal output end of the handle control key is directly connected with the signal input end of the motor 21. The handle control key, the motor 21 runs, the pinion 22 drives the meshed large gear 23 to rotate, and then drives the rotating shaft 24 to rotate, and the linkage mechanism 3 realizes the extension or retraction of the hidden handle under the drive of the rotating shaft 24; or no need to set handle control key, the signal output end of the main control board is connected to the signal input end of the motor 21. After the oven is powered on and running, the main control board directly controls the operation of the motor 21, so as to extend the handle body 7 as described above to avoid passing through the door body. 4. The heat dissipated increases the temperature of the handle body 7, giving the user a bad experience. After the power is turned off, the motor 21 automatically rotates to retract the handle body 7, or the signal output end of the main control board and the signal input end of the motor 21 After connecting, the main control board directly controls the operation of the motor 21, and drives the handle body 7 to extend. When the program is completed, the oven door body 4 is opened and closed again. After the motor 21 automatically retracts the handle, the program ends and the power is turned off. End this steam oven operation. In practical applications, the various control methods described above can also be integrated, and the required control method or a combination of several control methods can be selected.

To sum up, the linkage device of a hidden handle provided by the present invention has the following advantages compared with the prior art:

1. Under the control of external force or driving mechanism, the linkage mechanism can drive the handle to extend or retract, and it is hidden flush with the door body under normal conditions, so that home appliances have a better appearance and save space;

2. The movement of the handle body is driven by the linkage mechanism, so that the two ends of the handle body move in a balanced manner and improve the overall operation effect.

As mentioned above, similar technical solutions can be derived in combination with the content of the solutions given. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention still fall within the scope of the technical solutions of the present invention.

Claims (10)

1. The utility model provides a hidden handle's interlock mechanism, the handle includes the handle body and fixing device, its characterized in that: one end of the linkage mechanism is fixed with the handle body, the other end of the linkage mechanism is fixed with the fixing device, and under the action of external force, the handle body is driven to stretch and retract to achieve stretching or hiding of the handle.

2. The linking mechanism of a hidden handle as claimed in claim 1, wherein: the linkage mechanism comprises a linkage rod, one end of the linkage rod is fixed with the handle body, the other end of the linkage rod is fixed with the fixing device, and the linkage rod can rotate around a fixed point under the action of external force so as to drive the handle body to stretch.

3. The linking mechanism of a hidden handle as claimed in claim 2, wherein: the fixing device is provided with a mounting seat with a mounting groove, the other end of the linkage rod is inserted into the mounting groove and fixed with a rotating shaft in the mounting groove, and the rotating shaft drives the linkage rod to rotate under the action of external force.

4. The linking mechanism of a hidden handle as claimed in claim 2, wherein: the linkage rod comprises a driving rod and a driven rod, one end of the driving rod is fixed to the back of the handle body, the other end of the driving rod is fixed to the fixing device, the driving rod can rotate around a fixed point under the action of external force to drive the handle body to stretch out and draw back, and the driven rod rotates around the fixed point.

5. The linking mechanism of a hidden handle as claimed in claim 4, wherein: the fixing device is provided with an installation seat with an installation groove, the other end of the linkage rod is inserted into the installation groove and fixed with the rotating shaft, the rotating shaft drives the linkage rod to rotate under the action of external force, and the other end of the driven rod is fixed with the driven shaft on the installation seat and can rotate around the driven shaft.

6. The linking mechanism of a hidden handle as claimed in claim 4, wherein: the fixing device is provided with a mounting seat, the mounting seat is provided with two mounting grooves which are arranged in parallel, one of the mounting grooves is internally provided with a rotating shaft which can rotate under the action of external force, the other mounting groove is internally provided with a driven shaft, one end of the driving rod is fixed with the rotating shaft, and one end of the driven rod is fixed with the driven shaft.

7. The linking mechanism of a hidden handle as claimed in claim 6, wherein: the driving rod is fixed with the rotating shaft in the mounting groove on the outer side.

8. The linking mechanism of a hidden handle as claimed in claim 6, wherein: in the installation groove, the position of the driven shaft is higher than that of the rotating shaft.

9. The linking mechanism of a hidden handle as claimed in any one of claims 1 to 8, wherein: the fixing device is provided with a driving mechanism, the driving mechanism comprises a motor and a rotating shaft driven by the motor, the end part of the rotating shaft is fixed with the linkage mechanism, and the linkage mechanism is driven by the motor to move.

10. The linking mechanism of a hidden handle as claimed in claim 9, wherein: the fixing device is provided with a mounting seat, the mounting seat is provided with two mounting grooves which are arranged in parallel, the rotating shaft penetrates through the two mounting grooves, the linkage mechanism comprises a driving rod and a driven rod, the end part of the driving rod is arranged in one of the mounting grooves, fixed with the rotating shaft and driven by the rotating shaft to rotate, the other mounting groove is internally provided with a driven shaft, and the end part of the driven rod is fixed with the driven shaft and can rotate around the driven shaft under the driving of the handle body.

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