Double-door structure and dish washing machine with double-door structure

Abstract

The double-door structure comprises a box body, a first door body and a second door body, the box body is provided with a dish washing cavity and an opening, and the first door body and the second door body are used for opening and closing the opening of the box body and can be switched between an open state and a closed state. The first door body and the second door body jointly seal the opening of the box body; the linkage mechanism is used for enabling the first door body and the second door body to be synchronously opened and closed; the linkage mechanism comprises a first rocker arm, a second rocker arm, a linkage arm, a connecting rod and a fixing frame, the first door body and the second door body are installed on the first rocker arm and the second rocker arm respectively, and the linkage arm is in sliding connection with the refrigerator body, is in linkage with the first rocker arm through a linkage pin and is in linkage with the second rocker arm through the connecting rod. The double-door structure is adopted, the linkage mechanism is combined, the two door bodies are linked, the problem that the door opening space of the dish washing machine is large is solved, and smooth action of the two door bodies and the linkage mechanism can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, and more particularly to a double-door structure, and also to a dishwasher with the double-door structure. Background Art

[0002] Currently, most dishwashers adopt a single-door structure. Since the opening of the dishwasher usually has a certain height, a large space needs to be reserved in front of the dishwasher door so that the door can open normally.

[0003] Some dishwashers use a double-door structure, where the two doors are linked to each other. When opened, the two doors are stacked up and down, which can save space for opening the doors. For example, the utility model patent application with publication number CN114468914A discloses a dishwasher, comprising: a housing assembly, the housing assembly having a first accommodating cavity, the housing assembly having a first opening, the first opening being connected to the first accommodating cavity; a first door assembly, the first door assembly being at least partially disposed on the housing assembly; a second door assembly, the second door assembly being at least partially disposed on the housing assembly; and a linkage mechanism, the linkage mechanism being at least partially disposed on the housing assembly, the linkage mechanism being connected to the first door assembly and the second door assembly, respectively. When one of the first door assembly and the second door assembly moves, the linkage mechanism can drive the linkage mechanism to move. When the linkage mechanism moves, the other of the first door assembly and the second door assembly can simultaneously move away from the first opening or toward the first opening.

[0004] The prior art solution adopts a double-door structure to solve the problem that the dishwasher door takes up a large space. At the same time, the utility model provides a new technical solution to solve the above problem. Utility Model Content

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a double-door structure and a dishwasher having the double-door structure, which uses double doors instead of single doors to reduce the space occupied by the door body when opened.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A double-door structure includes a box body, a first door body, and a second door body. The box body has a dishwashing cavity and an opening. The first door body and the second door body are used to open and close the opening of the box body and can be switched between an open state and a closed state. In the closed state, the first door body and the second door body jointly seal the opening of the box body.

[0008] It also includes a linkage mechanism, which is used to enable the first door body and the second door body to open and close synchronously; the linkage mechanism includes a first rocker arm, a second rocker arm, a linkage arm, a connecting rod and a fixed frame, the first door body is fixedly connected to the first rocker arm, the second door body is fixedly connected to the second rocker arm, the first rocker arm is rotatably connected to the box body through a first fixed shaft, the second rocker arm is rotatably connected to the box body through a second fixed shaft, the linkage arm is slidably connected to the box body, the connecting rod is rotatably connected to the first rocker arm and the linkage arm respectively, the first rocker arm is installed with a linkage pin, the linkage arm is provided with a first linkage groove, the linkage pin is provided in the first linkage groove, and can move along the first linkage groove.

[0009] The utility model is further configured such that the linkage arm is provided with a guide groove, the box body is fixed with a guide block, and the guide block is slidably connected in the guide groove.

[0010] The present invention is further configured such that the guide groove is in a straight line shape, and the linkage arm is connected to the box body in a straight line sliding manner.

[0011] The present invention is further configured such that two guide blocks are provided, and each guide block is slidably connected to the guide groove.

[0012] The utility model is further configured such that the first rocker arm is provided with a second linkage groove, the linkage pin is installed in the second linkage groove and can move along the second linkage groove;

[0013] When the first rocker arm is in the closed state, the direction of the second linkage groove is consistent with the sliding direction of the linkage arm. The second rocker arm can rotate a preset angle from the closed state, and the linkage pin moves synchronously with the linkage arm within the stroke of the second linkage groove.

[0014] The utility model is further configured such that the second linkage groove has a first end and a second end, the first rocker arm and the second rocker arm are both in a closed state, and the linkage pin is located at the second end of the second linkage groove; the first rocker arm is in a closed state, and the second rocker arm rotates from the closed state by a preset angle, and the linkage pin can move to the first end of the second linkage groove.

[0015] The present invention is further configured such that the second linkage groove is a waist-shaped groove, the first end and the second end are both arc-shaped structures, and the linkage pin can rotate in the second linkage groove.

[0016] The present invention is further configured to further include a spring, which elastically acts between the linkage mechanism and the box body to elastically drive the first door body and the second door body to close.

[0017] The utility model is further configured to include a linear drive, which is installed on a box body. The linear drive has a linear drive end, which is connected to a linkage arm. The linear drive can control the extension and retraction of the linear drive end, and at the same time, drive the linkage arm and the linkage mechanism to realize the opening and closing switching of the first door body and the second door body.

[0018] The present invention also provides a dishwasher with a double-door structure, including the double-door structure described above. The dishwasher in this solution adopts the double-door structure described above, which can achieve the same effect as the double-door structure described above and reduce the space occupied by the dishwasher door.

[0019] In summary, the present invention has the following beneficial effects:

[0020] In this solution, the double-door structure is composed of the first door body and the second door body to jointly open and close the opening of the box body. When in the open state, the first door body and the second door body are opened together and stacked up and down, which can reduce the space occupied by the door.

[0021] In the double-door structure, a linkage mechanism is used to link the first door body and the second door body. The linkage mechanism has a linkage arm that can slide linearly. The movement posture of the entire linkage mechanism and the opening and closing states of the first door body and the second door body are all controlled by the sliding movement of the linkage arm; moreover, the movement posture and path of the linear sliding linkage arm are determined, making the movement of the entire linkage mechanism more regular and controllable.

[0022] By setting a yield structure in the linkage mechanism and opening a third linkage slot in the first rocker arm, when the first door body is closed, the direction of the third linkage slot is consistent with the sliding direction of the linkage arm. The third linkage slot forms a yield space for the first linkage pin, allowing the second door body to deflect slightly within the reserved range, so that the first door body and the second door body will not interfere with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of the dishwasher in the closed state in the first embodiment;

[0024] Figure 2 is a perspective view of the dishwasher in the first embodiment in an open state;

[0025] Figure 3 is a side view of the dishwasher in the closed state in the first embodiment;

[0026] Figure 4 A slightly opened side view of the dishwasher in Example 1;

[0027] Figure 5 A side view of the opening process of the dishwasher in Example 1;

[0028] Figure 6 is a fully opened side view of the dishwasher in Example 1;

[0029] Figure 7 This is a side view of the linkage mechanism in the closed state in Example 1, with the linkage arm portion not assembled;

[0030] Figure 8 This is a slightly opened side view of the linkage mechanism in Example 1, with the linkage arm portion not assembled;

[0031] Figure 9 A side view of the opening process of the linkage mechanism in Example 1;

[0032] Figure 10 It is a side view of the fully opened linkage mechanism in Example 1;

[0033] Figure 11 It is a side view of the dishwasher in the second embodiment.

[0034] Figure markings: housing 10; dishwashing chamber 11; first door body 20; second door body 30; linkage mechanism 40; first rocker arm 41; first fixed shaft 411; second linkage groove 412; first end 4121; second end 4122; second rocker arm 42; second fixed shaft 421; linkage arm 43; guide groove 431; first linkage groove 432; connecting rod 44; first movable shaft 441; second movable shaft 442; fixing frame 45; guide block 451; linkage pin 46; spring 50; linear drive 60. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Example 1

[0037] This embodiment discloses a double-door structure, which can be applied to a dishwasher, a storage cabinet, or other equipment. The double-door structure applied to a dishwasher will be described in detail below.

[0038] Reference Figure 1 、 Figure 2As shown, the double-door structure includes a box body 10, a first door body 20 and a second door body 30. The box body 10 has a dishwashing cavity 11 and an opening. The first door body 20 and the second door body 30 are both installed at the opening of the box body 10 to open and close the opening of the box body 10. Through the opening and closing actions of the first door body 20 and the second door body 30, it can switch between the open state and the closed state.

[0039] Reference Figure 1 As shown, in the closed state, the first door body 20 and the second door body 30 jointly close the opening of the box body 10, and the first door body 20 is on the top and the second door body 30 is on the bottom.

[0040] Reference Figure 2 As shown, in the open state, the first door body 20 and the second door body 30 are flipped together to open the opening of the box body 10.

[0041] In this embodiment, the double-door structure also includes a linkage mechanism 40, which is installed on the side of the box body 10 and can connect the first door body 20, the second door body 30 and the box body 10, so that the first door body 20 and the second door body 30 can be linked to each other, so that the first door body 20 and the second door body 30 can be opened and closed synchronously.

[0042] Reference Figures 1-6 As shown, the linkage mechanism 40 includes a first rocker arm 41, a second rocker arm 42, a linkage arm 43, a connecting rod 44 and a fixing frame 45, wherein the fixing frame 45 serves as a support for the linkage mechanism 40 and is fixedly mounted on the side of the box body 10. The fixing frame 45 is equivalent to a carrier fixed outside the box body 10 and can be regarded as a part of the box body 10.

[0043] The first door 20 is fixedly connected to a first rocker arm 41, which is rotatably connected to the housing 10 via a first fixed shaft 411. The first rocker arm 41 can connect the first door 20 to the housing 10. The second door 30 is fixedly connected to a second rocker arm 42, which is rotatably connected to the housing 10 via a second fixed shaft 421. The second door 30 can be connected to the housing 10 via the second rocker arm 42. The first door 20 and the second door 30 can be opened and closed relative to the housing 10 by rotation.

[0044] The linkage arm 43 is slidably connected to the housing 10 and has an inclined sliding direction, allowing it to slide up and down along the sliding path. The upper and lower ends of the linkage arm 43 can respectively engage with the first rocker arm 41 and the second rocker arm 42, thereby driving the first rocker arm 41 and the second rocker arm 42 to rotate synchronously, thereby achieving synchronous opening and closing of the first door 20 and the second door 30.

[0045] In this embodiment, the linkage arm 43 can adopt the guide block 451 and the guide groove 431 to cooperate with each other to achieve sliding guidance, which can limit the sliding direction of the linkage arm 43 and limit the sliding stroke of the linkage arm 43. Figure 7-10 As shown, the linkage arm 43 is provided with a guide groove 431 , and the box body 10 is fixed with a guide block 451 , which is slidably connected in the guide groove 431 , thereby enabling the linkage arm 43 to be slidably guided.

[0046] In this embodiment, the sliding direction of the guide groove 431 is linear and inclined, allowing the linkage arm 43 to slide linearly with the housing 10. The guide blocks 451 are pin-shaped structures, and two guide blocks 451 may be provided; the two guide blocks 451 are embedded in the guide groove 431 to limit relative rotation and form a defined guide path.

[0047] In this embodiment, the upper end of the linkage arm 43 is linked to the first rocker arm 41 via a linkage pin 46, while the lower end of the linkage arm 43 is linked to the second rocker arm 42 via a connecting rod 44. Furthermore, the first door body 20 and the connecting rod 44 are respectively connected to the first rocker arm 41 on either side of the first fixed axis 411, while the second door body 30 and the linkage pin 46 are respectively connected to the second rocker arm 42 on either side of the second fixed axis 421.

[0048] Reference Figure 7-10 As shown, the first rocker arm 41 is equipped with a linkage pin 46, and the linkage arm 43 defines a first linkage slot 432. The linkage pin 46 is partially embedded in the first linkage slot 432 and can move along the first linkage slot 432. The linkage pin 46 can transmit the load between the linkage arm 43 and the first rocker arm 41 through the linkage pin 46, thereby enabling the linkage arm 43 and the first rocker arm 41 to be linked.

[0049] A first movable shaft 441 and a second movable shaft 442 are mounted on both ends of the connecting rod 44, respectively. The connecting rod 44 is rotatably connected to the second rocker arm 42 via the first movable shaft 441, and is rotatably connected to the lower end of the linkage arm 43 via the second movable shaft 442. The connecting rod 44, connected between the linkage arm 43 and the second rocker arm 42, can transfer load between the linkage arm 43 and the second rocker arm 42, thereby enabling the linkage arm 43 and the second rocker arm 42 to move in tandem.

[0050] The first door 20 and the second door 30 can be linked by a linkage mechanism 40, thereby enabling the two doors to open and close simultaneously during the opening and closing process. However, since the opening of the dishwashing chamber 11 is opened and closed by the first door 20 and the second door 30 together, the upper and lower connection points of the first door 20 and the second door 30 are in a relatively close state. In the closed state, if the first door 20 and the second door 30 are opened simultaneously, mutual interference may occur at the connection point between the first door 20 and the second door 30.

[0051] Reference Figure 4 As shown, when the first door 20 is closed, the second door 30 can rotate within a small, preset angle range. Therefore, during the door opening process, the second door 30 can open before the first door 20, and then the second door 30 opens synchronously with the first door 20. During the door closing process, the first door 20 closes before the second door 30, and the second door 30 still has a small angular deviation from the closed state. After the first door 20 is closed, the second door 30 is closed. By setting a small deflection between the first door 20 and the second door 30, the first door 20 and the second door 30 do not interfere with each other.

[0052] Reference Figure 7 、 Figure 8 As shown, a second linkage slot 412 is provided in the first rocker arm 41 , and the size of the linkage pin 46 matches the second linkage slot 412 , so that the linkage pin 46 can be installed in the second linkage slot 412 . Moreover, the linkage pin 46 can move relatively along the second linkage slot 412 .

[0053] The first rocker arm 41 is in the closed state. At this time, the position of the first rocker arm 41 is determined, and the direction of the second linkage slot 412 is consistent with the sliding direction of the linkage arm 43. The two are parallel to each other, so that the linkage pin 46 can move synchronously with the linkage arm 43 within the travel of the second linkage slot 412. When the first rocker arm 41 is fixed, the linkage pin 46, the linkage arm 43, the connecting rod 44 and the second rocker arm 42 can move, and the range of movement is limited by the travel of the second linkage slot 412. The second rocker arm 42 can rotate to a preset angle from the closed state. The first door body 20 and the second door body 30 can Figure 3 and Figure 4 transitions between states.

[0054] In this embodiment, the second linkage slot 412 has a first end 4121 and a second end 4122, and the second linkage slot 412 can limit the opening angle of the second door body 30. When the first rocker arm 41 and the second rocker arm 42 are both in the closed state, the linkage pin 46 is located at the second end 4122 of the second linkage slot 412. When the first rocker arm 41 is in the closed state and the second rocker arm 42 rotates from the closed state by a preset angle, the linkage pin 46 can move to the first end 4121 of the second linkage slot 412. The linkage pin 46 is limited by the travel of the first end 4121 of the second linkage slot 412, and when the second door body 30 continues to open, it will be linked with the first door body 20.

[0055] Furthermore, the second linkage groove 412 is a waist-shaped groove, with the first end 4121 and the second end 4122 both being arc-shaped. The radius of the arc matches the linkage pin 46, allowing the linkage pin 46 to rotate within the second linkage groove 412. Furthermore, when the linkage pin 46 contacts the arc-shaped surface at the end of the second linkage groove 412, the arc-shaped surface at the end is approximately concentric with the linkage pin 46, forming a stable rotation state and ensuring that the linkage pin 46 can move smoothly within the second linkage groove 412.

[0056] Furthermore, in order to make the first door body 20 and the second door body 30 have a certain elastic damping effect during the opening and closing process, a spring 47 can be installed between the linkage mechanism 40 and the box body 10. Under the action of the spring 47, the first door body 20 and the second door body 30 have an elastic drive in the closing direction, which can counteract part of the effect of gravity and avoid excessive impact caused by the rotation speed of the first door body 20 and the second door body 30 when opening.

[0057] In this embodiment, the spring 47 is a tension spring, the two ends of which are respectively connected to the first rocker arm 41 and the box body 10. It can exert an elastic force on the first rocker arm 41 toward the closed state, and transmit it to the second rocker arm 42 through the linkage mechanism 40. The first rocker arm 41 and the second rocker arm 42 can be elastically constrained by the tension spring together.

[0058] This embodiment discloses a dishwasher having a double-door structure as in the above embodiment, which can achieve the same effects as described above and can reduce the space occupied by the dishwasher door.

[0059] Example 2

[0060] This embodiment discloses another double door structure. Based on the first embodiment, refer to Figure 11 Provide detailed explanation.

[0061] In this embodiment, the double-door structure further includes a linear actuator 60 having a linear drive end 61 that can reciprocate and extend to provide driving force. The linear actuator 60 is mounted on the housing 10, and the linear drive end 61 is connected to the linkage arm 43. The extension and contraction direction of the linear drive end 61 is consistent with the sliding direction of the linkage arm 43. The linear actuator 60 can control the linkage arm 43, driving the first rocker arm 41 and the second rocker arm 42 to rotate, thereby controlling the movement of the linkage mechanism 40, and further controlling the opening and closing of the first door body 20 and the second door body 30.

[0062] In this embodiment, the driving action of the linear actuator 60 can drive the linkage arm 43 and the entire linkage mechanism 40 to operate, thereby controlling the opening and closing of the first door body 20 and the second door body 30, thereby realizing automatic control of door opening and closing. By presetting the telescopic mode of the linear actuator 60, it is also possible to control different opening and closing conditions of the door bodies, for example, the first door body 20 and the second door body 30 can be set to a state where the first door body 20 and the second door body 30 are jointly closed, the first door body 20 and the second door body 30 are fully opened, or the first door body 20 and the second door body 30 can be set to open to any angular position.

[0063] Moreover, since the sliding direction of the linkage arm 43 is a certain straight line, which is consistent with the extension and contraction direction of the linear driving end 61, the displacement of the linkage arm 43 can be controlled by controlling the extension and contraction of the linear driving end 61. The position of the linkage arm 43 can correspond to the clear position of the linkage mechanism 40, and can more accurately control the opening and closing of the first door body 20 and the second door body 30, as well as the amplitude of the opening and closing.

[0064] For the existing double-door solution, there is no linear motion component in the various components of the linkage mechanism. In this embodiment, the linkage arm 43 can slide back and forth linearly relative to the box body, and its movement posture and stroke are determined. The linkage arm 43 is driven by the linear driver 60, which can stably and smoothly control the movement of the linkage mechanism, and then accurately control the opening range of the first door body 20 and the second door body 30, which is convenient for control and adjustment.

[0065] This embodiment discloses a double-door dishwasher having the double-door structure of the above embodiment, which can achieve the same effects as above and can reduce the space occupied by the dishwasher door.

[0066] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A double-door structure, comprising a box (10), a first door (20) and a second door (30), wherein the box (10) has a dishwashing cavity (11) and an opening, the first door (20) and the second door (30) being used to open and close the opening of the box (10) and being capable of switching between an open state and a closed state, wherein in the closed state, the first door (20) and the second door (30) jointly seal the opening of the box (10); It is characterized by: The invention also includes a linkage mechanism (40), wherein the linkage mechanism (40) is used to enable the first door body (20) and the second door body (30) to be opened and closed synchronously; the linkage mechanism (40) includes a first rocker arm (41), a second rocker arm (42), a linkage arm (43), a connecting rod (44) and a fixing frame (45); the first door body (20) is fixedly connected to the first rocker arm (41), the second door body (30) is fixedly connected to the second rocker arm (42), and the first rocker arm (41) is rotatably connected to the box body through a first fixed shaft (411). The invention relates to a box body (10), wherein the second rocker arm (42) is rotatably connected to the box body (10) through a second fixed shaft (421), the linkage arm (43) is slidably connected to the box body (10), the connecting rod (44) is rotatably connected to the first rocker arm (41) and the linkage arm (43), the first rocker arm (41) is equipped with a linkage pin (46), the linkage arm (43) is provided with a first linkage groove (432), and the linkage pin (46) is provided in the first linkage groove (432) and can move along the first linkage groove (432).

2. The double door structure according to claim 1, characterized in that: The linkage arm (43) is provided with a guide groove (431), and the box body (10) is fixed with a guide block (451), and the guide block (451) is slidably connected in the guide groove (431).

3. The double door structure according to claim 2, characterized in that: The guide groove (431) is linear, and the linkage arm (43) is linearly slidably connected to the box body (10).

4. The double door structure according to claim 3, characterized in that: There are two guide blocks (451), and each guide block (451) is slidably connected to the guide groove (431).

5. The double door structure according to claim 1, characterized in that: The first rocker arm (41) is provided with a second linkage groove (412), and the linkage pin (46) is installed in the second linkage groove (412) and can move along the second linkage groove (412); When the first rocker arm (41) is in a closed state, the direction of the second linkage slot (412) is consistent with the sliding direction of the linkage arm (43); the second rocker arm (42) can rotate to a preset angle from the closed state; and the linkage pin (46) moves synchronously with the linkage arm (43) within the travel of the second linkage slot (412).

6. The double door structure according to claim 5, characterized in that: The second linkage slot (412) has a first end (4121) and a second end (4122); the first rocker arm (41) and the second rocker arm (42) are both in a closed state, and the linkage pin (46) is located at the second end (4122) of the second linkage slot (412); the first rocker arm (41) is in a closed state, and the second rocker arm (42) rotates a preset angle from the closed state, and the linkage pin (46) can move to the first end (4121) of the second linkage slot (412).

7. The double door structure according to claim 6, characterized in that: The second linkage groove (412) is a waist-shaped groove, the first end (4121) and the second end (4122) are both arc-shaped structures, and the linkage pin (46) can rotate in the second linkage groove (412).

8. The double door structure according to claim 1, characterized in that: It also includes a spring (5), which elastically acts between the linkage mechanism (40) and the box body (10) and is used to elastically drive the first door body (20) and the second door body (30) to close.

9. The double door structure according to claim 1, characterized in that: The invention also includes a linear driver (60), which is installed on the box body (10). The linear driver (60) has a linear driving end (61), and the linear driving end (61) is connected to the linkage arm (43). The linear driver (60) can control the linear driving end (61) to extend and retract, and at the same time, drive the linkage arm (43) and the linkage mechanism (40) to move, thereby realizing the opening and closing switching of the first door body (20) and the second door body (30).

10. A dishwasher, characterized in that: It comprises a double door structure as described in any one of claims 1 to 9.

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