A simple linear and rotary synchronous integrated actuator

Abstract

The present invention belongs to the technical field of household appliance actuators, and specifically relates to a simple linear-rotation synchronous integrated actuator. It includes a driving shaft, a gear, a rack, a driving wheel, a synchronous belt, a driven wheel, a driven shaft, and a driving device; the gear and the driving wheel are coaxially fixed on the driving shaft; the rack is meshed with the gear; the driven shaft is arranged parallel to the driving shaft; the driven wheel is fixed on the driven shaft; the synchronous belt is connected between the driving wheel and the driven wheel; the driving device is powered to connect the driving shaft and drive the driving shaft to rotate; the synchronous belt includes a tooth surface segment and a plane segment; during the rotation of the driving shaft, the driving wheel always contacts the tooth surface segment, and the driven wheel can contact both the tooth surface segment and the plane segment; when the driven wheel contacts the plane segment, slippage occurs between the two and power cannot be transmitted. The present invention has a reasonable and compact structure, and synchronously realizes the linear-rotation integrated drive function that can be operated manually and automatically with a very simple structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliance actuators, and in particular relates to a simple linear and rotary synchronous integrated actuator. Background Art

[0002] With the improvement of living standards, French refrigerators are popular among consumers due to their large built-in capacity and stylish appearance. The freezer compartment of a French refrigerator is connected to the door. As the volume of the refrigerator increases and the number of items in the freezer increases, the resistance to open the door increases, which brings a certain degree of inconvenience to users.

[0003] At present, there are a few drawer-type refrigerators that can automatically open and close and solve the above problems on the market, but the door opening and closing mechanism is relatively complex, the process cost and manufacturing cost are high, and only the automatic entry and exit function of the drawer is realized, and the manual function is not compatible. Similarly, the technical solutions provided by the related patents with application numbers 201810119382.8, 201720589702.7 and 201910807100.8 also only realize the automatic entry and exit function of the refrigerator drawer.

[0004] On the other hand, when larger items need to be taken out and placed in the refrigerator, even if the drawer door is fully opened, there will be interference between the items and the door.

[0005] In order to solve the above problems, optimizing the structural design of the refrigerator is one of the feasible optimization directions, and more importantly, how to develop and design an actuator that is cost-controlled, easy to use and reliable. Summary of the invention

[0006] The present invention provides a simple linear-rotation synchronous integrated actuator, which realizes a linear-rotation integrated driving function that can be operated manually and automatically with a simple structure, so as to overcome the above-mentioned various problems existing in the prior art.

[0007] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a simple linear rotation synchronous integrated actuator, including a driving shaft, a gear, a rack, a driving wheel, a synchronous belt, a driven wheel, a driven shaft, and a driving device; the gear and the driving wheel are coaxially fixed on the driving shaft; the rack is meshed with the gear; the driven shaft is arranged parallel to the driving shaft; the driven wheel is fixed on the driven shaft; the synchronous belt is connected between the driving wheel and the driven wheel; the driving device is dynamically connected to the driving shaft and drives the driving shaft to rotate; the synchronous belt includes a tooth surface segment and a plane segment; during the rotation of the driving shaft, the driving wheel always contacts the tooth surface segment, and the driven wheel can contact both the tooth surface segment and the plane segment; when the driven wheel contacts the plane segment, slippage occurs between the two and power cannot be transmitted.

[0008] The actuator can perform both linear and rotary motions simultaneously and can be used in various application scenarios that require both linear and rotary drives. The following uses the drive of a refrigerator drawer as an example to explain its working principle, but does not limit its use to this scenario.

[0009] A convenient drawer, which is a flip-down drawer, comprises a drawer body and a panel arranged on the outer side of the drawer body; the lower edge of the panel is hinged to the drawer body. The above-mentioned simple linear rotation synchronous integrated actuator is installed in the drawer, specifically, the driving device is fixed to the drawer body; the driven shaft is coaxially arranged with the rotation axis of the panel rotating relative to the drawer body; the rack is arranged along the translation direction of the drawer body; the drawer body can be slidably installed in the cabinet of the refrigerator; the rack is fixedly installed in the cabinet of the refrigerator.

[0010] The main working principle is as follows. When the drawer opens automatically, the drive device drives the gear and the driving wheel to rotate synchronously; the gear rotates and acts on the rack, thereby pushing the drawer body to slide outward; the driving wheel rotates and acts on the synchronous belt and the driven wheel, thereby flipping the panel down. When the panel flips down to the extreme position (the preferred range of the extreme position is 60-90° downward), the driving shaft continues to rotate to drive the drawer body to continue to slide out. At this time, the driven wheel just contacts the flat section of the synchronous belt and slips until the drawer body slides out completely. When the drawer closes automatically, the drive device rotates in the opposite direction. At this time, the driven wheel contacts the flat section of the synchronous belt and slips; the synchronous belt continues to rotate, and the tooth surface section contacts the driven wheel to drive the panel to flip up until it is closed; in the above two stages, the gear and the rack are always connected by power to drive the drawer body to slide back until it is reset.

[0011] Furthermore, in the above-mentioned simple linear-rotation synchronous integrated actuator, circular limit plates are integrally provided on both sides of the driving wheel and the driven wheel; the synchronous belt is restricted between the circular limit plates. The circular limit plates can prevent the synchronous belt from deviating.

[0012] Furthermore, in the above-mentioned simple linear-rotation synchronous integrated actuator, the belt teeth width of the tooth surface section is smaller than the width of the synchronous belt; the wheel surfaces of the driving wheel and the driven wheel are provided with gear teeth along the axial part, and are matched with the synchronous belt. The wheel surfaces of the driving wheel and the driven wheel are provided with gear teeth along the axial part, which can ensure reliable meshing with the tooth surface section and smooth slipping with the plane section.

[0013] Furthermore, for the above-mentioned simple linear-rotation synchronous integrated actuator, the driving device may use an electric motor, and the electric motor is preferably a reduction motor with a reduction gear set.

[0014] Furthermore, in the above-mentioned simple linear-rotary synchronous integrated actuator, the rack can be arranged in parallel with the synchronous belt, or can be arranged obliquely with the synchronous belt, and the specific adjustment can be reasonably made according to the structural arrangement of the actual scene.

[0015] Furthermore, the above-mentioned simple linear-rotation synchronous integrated actuator also includes an elastic damping device, which is connected to the driven shaft; the elastic damping device provides damping for the rotation of the driven shaft. After the elastic damping device is provided, the damping effect of the panel rotation is increased, thereby improving the stability and reliability during automatic closing. Not only that, the provision of the elastic damping device also enables the above-mentioned drawer to have manual opening and manual closing functions on the basis of the original automatic opening and automatic closing. When manually opened, the panel is directly pulled, and the drawer body slides outward while the panel flips down until it slides out completely; when manually closed, the panel is pushed, and under the action of damping, the drawer body first slides inward until the tooth surface segment of the synchronous belt contacts the synchronous wheel, and the panel continues to be pushed. At this time, the panel rotates synchronously with the sliding of the drawer body until it is fully reset.

[0016] Furthermore, in the above-mentioned simple linear-rotation synchronous integrated actuator, the elastic damping device includes a slot and an elastic protrusion that can be engaged with each other; the fixing method is any one of the following two fixing methods: first, the slot is fixed to the driven shaft, and the elastic protrusion is fixed to the object on which the actuator is installed; second, the slot is fixed to the object on which the actuator is installed, and the elastic protrusion is fixed to the driven shaft; and when the driven shaft rotates, the elastic protrusion is not completely separated from the slot. In addition to using the above-mentioned structure, the elastic damping device can also use other elastic damping devices in the prior art, such as elastic damping connecting rods and elastic damping hinges.

[0017] Beneficial effects: It can be seen from the above technical solutions that the simple linear-rotation synchronous integrated actuator provided by the present invention has a reasonable and compact structure, and realizes the linear-rotation integrated driving function that can be operated manually and automatically with a very simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of Example 1;

[0019] Figure 2 It is a structural schematic diagram of Example 2;

[0020] Figure 3 for Figure 2 A partial enlarged view of

[0021] Figure 4 This is a schematic diagram of the coordination of the driving wheel, the synchronous belt, and the driven wheel in Example 2;

[0022] Figure 5 It is a structural schematic diagram of Example 3;

[0023] Figure 6 for Figure 5 A partial enlarged view of

[0024] Figure 7 It is a structural schematic diagram of Example 4;

[0025] Figure 8 This is a schematic diagram of the structure of Example 5.

[0026] In the figure, the drawer body 1, the panel 2, the driving shaft 31, the gear 32, the rack 33, the driving wheel 34, the synchronous belt 35, the driven wheel 36, the driven shaft 37, the driving device 38, the tooth surface segment 351, the plane segment 352, the slot 41, and the elastic protrusion 42. DETAILED DESCRIPTION

[0027] The present invention is further illustrated by specific examples below. The examples are only for illustration and are not intended to be limiting.

[0028] Example 1

[0029] A convenient drawer is a bottom-flip drawer, such as Figure 1 As shown, it includes a drawer body 1 and a panel 2 arranged on the outer side of the drawer body 1; the lower edge of the panel 2 is hinged to the drawer body 1; and it also includes an actuator that can drive the drawer body 1 to translate and the panel 2 to flip as a whole.

[0030] The actuator includes a driving shaft 31, a gear 32, a rack 33, a driving wheel 34, a synchronous belt 35, a driven wheel 36, a driven shaft 37, and a driving device 38; the gear 32 and the driving wheel 34 are coaxially fixed on the driving shaft 31; the rack 33 is meshed with the gear 32; the driven shaft 37 is arranged parallel to the driving shaft 31; the driven wheel 36 is fixed on the driven shaft 37; the synchronous belt 35 is connected between the driving wheel 34 and the driven wheel 36; the driving device 38 is connected to the driving shaft 31 by power and drives the driving shaft 31 to rotate; the synchronous belt 35 includes a tooth surface segment 351 and a plane segment 352; during the rotation of the driving shaft 31, the driving wheel 34 always contacts the tooth surface segment 351, and the driven wheel 36 can contact both the tooth surface segment 351 and the plane segment 352; when the driven wheel 36 contacts the plane segment 352, slippage occurs between the two and power cannot be transmitted.

[0031] The driving device 38 is fixed to the drawer body 1 ; the driven shaft 37 is coaxially arranged with the rotation axis of the panel 2 relative to the drawer body 1 ; the rack 33 is arranged along the translation direction of the drawer body 1 .

[0032] Example 2

[0033] A convenient drawer is a bottom-flip drawer, such as Figure 2 , 3 As shown in , 4, it includes a drawer body 1 and a panel 2 arranged on the outer side of the drawer body 1; the lower edge of the panel 2 is hinged to the drawer body 1; and it also includes an actuator that can drive the drawer body 1 to translate and the panel 2 to flip as a whole.

[0034] The actuator includes a driving shaft 31, a gear 32, a rack 33, a driving wheel 34, a synchronous belt 35, a driven wheel 36, a driven shaft 37, and a driving device 38; the gear 32 and the driving wheel 34 are coaxially fixed on the driving shaft 31; the rack 33 is meshed with the gear 32; the driven shaft 37 is arranged parallel to the driving shaft 31; the driven wheel 36 is fixed on the driven shaft 37; the synchronous belt 35 is connected between the driving wheel 34 and the driven wheel 36; the driving device 38 is connected to the driving shaft 31 by power and drives the driving shaft 31 to rotate; the synchronous belt 35 includes a tooth surface segment 351 and a plane segment 352; during the rotation of the driving shaft 31, the driving wheel 34 always contacts the tooth surface segment 351, and the driven wheel 36 can contact both the tooth surface segment 351 and the plane segment 352; when the driven wheel 36 contacts the plane segment 352, slippage occurs between the two and power cannot be transmitted.

[0035] The driving device 38 is fixed to the drawer body 1 ; the driven shaft 37 is coaxially arranged with the rotation axis of the panel 2 relative to the drawer body 1 ; the rack 33 is arranged along the translation direction of the drawer body 1 .

[0036] In this embodiment, the driving device 38 is a motor, and the motor is a reduction motor with a reduction gear set.

[0037] In this embodiment, an elastic damping device is further included, which is arranged between the drawer body 1 and the panel 2 ; the elastic damping device provides a damping effect when the panel 2 rotates relative to the drawer body 1 .

[0038] In this embodiment, the elastic damping device includes a slot 41 and an elastic protrusion 42 that can be engaged with each other; the fixing method is: the slot 41 is fixed to the panel 2, and the elastic protrusion 42 is fixed to the drawer body 1; and when the panel 2 rotates relative to the drawer body 1, the elastic protrusion 42 is not completely separated from the slot 41.

[0039] In this embodiment, circular limit plates are integrally provided on both sides of the driving wheel 34 and the driven wheel 36; the synchronous belt 35 is limited between the circular limit plates; the belt tooth width of the tooth surface segment 351 is smaller than the width of the synchronous belt 35; the wheel surfaces of the driving wheel 34 and the driven wheel 36 are provided with gear teeth along the axial part, and cooperate with the synchronous belt 35, such as Figure 4 shown.

[0040] Example 3

[0041] A convenient drawer is a flip-up drawer, such as Figure 5 , 6 As shown, it includes a drawer body 1 and a panel 2 arranged on the outer side of the drawer body 1; the upper edge of the panel 2 is hinged to the drawer body 1; and it also includes an actuator that can drive the drawer body 1 to translate and the panel 2 to flip as a whole.

[0042] The actuator includes a driving shaft 31, a gear 32, a rack 33, a driving wheel 34, a synchronous belt 35, a driven wheel 36, a driven shaft 37, and a driving device 38; the gear 32 and the driving wheel 34 are coaxially fixed on the driving shaft 31; the rack 33 is meshed with the gear 32; the driven shaft 37 is arranged parallel to the driving shaft 31; the driven wheel 36 is fixed on the driven shaft 37; the synchronous belt 35 is connected between the driving wheel 34 and the driven wheel 36; the driving device 38 is connected to the driving shaft 31 by power and drives the driving shaft 31 to rotate; the synchronous belt 35 includes a tooth surface segment 351 and a plane segment 352; during the rotation of the driving shaft 31, the driving wheel 34 always contacts the tooth surface segment 351, and the driven wheel 36 can contact both the tooth surface segment 351 and the plane segment 352; when the driven wheel 36 contacts the plane segment 352, slippage occurs between the two and power cannot be transmitted.

[0043] The driving device 38 is fixed to the drawer body 1 ; the driven shaft 37 is coaxially arranged with the rotation axis of the panel 2 relative to the drawer body 1 ; the rack 33 is arranged along the translation direction of the drawer body 1 .

[0044] In this embodiment, the driving device 38 is a motor.

[0045] In this embodiment, an elastic damping device is further included, which is arranged between the drawer body 1 and the panel 2 ; the elastic damping device provides a damping effect when the panel 2 rotates relative to the drawer body 1 .

[0046] In this embodiment, the elastic damping device includes a slot 41 and an elastic protrusion 42 that can be engaged with each other; the fixing method is any one of the following two fixing methods: the slot 41 is fixed to the panel 2, and the elastic protrusion 42 is fixed to the drawer body 1; and when the panel 2 rotates relative to the drawer body 1, the elastic protrusion 42 is not completely separated from the slot 41.

[0047] Example 4

[0048] A simple linear and rotary synchronous integrated actuator, such as Figure 7 As shown, it includes a driving shaft 31, a gear 32, a rack 33, a driving wheel 34, a synchronous belt 35, a driven wheel 36, a driven shaft 37, and a driving device 38; the gear 32 and the driving wheel 34 are coaxially fixed on the driving shaft 31; the rack 33 is meshed with the gear 32; the driven shaft 37 is arranged parallel to the driving shaft 31; the driven wheel 36 is fixed on the driven shaft 37; the synchronous belt 35 is connected between the driving wheel 34 and the driven wheel 36; the driving device 38 is connected to the driving shaft 31 by power and drives the driving shaft 31 to rotate; the synchronous belt 35 includes a tooth surface segment 351 and a plane segment 352; during the rotation of the driving shaft 31, the driving wheel 34 always contacts the tooth surface segment 351, and the driven wheel 36 can contact both the tooth surface segment 351 and the plane segment 352; when the driven wheel 36 contacts the plane segment 352, slippage occurs between the two and power cannot be transmitted.

[0049] Example 5

[0050] A simple linear and rotary synchronous integrated actuator, such as Figure 8 As shown, it includes a driving shaft 31, a gear 32, a rack 33, a driving wheel 34, a synchronous belt 35, a driven wheel 36, a driven shaft 37, and a driving device 38; the gear 32 and the driving wheel 34 are coaxially fixed on the driving shaft 31; the rack 33 is meshed with the gear 32; the driven shaft 37 is arranged parallel to the driving shaft 31; the driven wheel 36 is fixed on the driven shaft 37; the synchronous belt 35 is connected between the driving wheel 34 and the driven wheel 36; the driving device 38 is connected to the driving shaft 31 by power and drives the driving shaft 31 to rotate; the synchronous belt 35 includes a tooth surface segment 351 and a plane segment 352; during the rotation of the driving shaft 31, the driving wheel 34 always contacts the tooth surface segment 351, and the driven wheel 36 can contact both the tooth surface segment 351 and the plane segment 352; when the driven wheel 36 contacts the plane segment 352, slippage occurs between the two and power cannot be transmitted.

[0051] In this embodiment, the driving device 38 is a motor, and the motor is a reduction motor with a reduction gear set.

[0052] In this embodiment, an elastic damping device is also included, and the elastic damping device is connected to the driven shaft 37 ; the elastic damping device provides a damping effect when the driven shaft 37 rotates.

[0053] In this embodiment, the elastic damping device includes a slot 41 and an elastic protrusion 42 that can be engaged with each other; the slot 41 is fixed to the driven shaft 37, and the elastic protrusion 42 is fixed to the object on which the actuator is installed; when the driven shaft 37 rotates, the elastic protrusion 42 is not completely separated from the slot 41.

[0054] The above are only preferred embodiments of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principles of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A simple linear and rotary synchronous integrated actuator, characterized in that: The invention comprises a driving shaft (31), a gear (32), a rack (33), a driving wheel (34), a synchronous belt (35), a driven wheel (36), a driven shaft (37), and a driving device (38); the gear (32) and the driving wheel (34) are coaxially fixed on the driving shaft (31); the rack (33) is meshed with the gear (32); the driven shaft (37) is arranged parallel to the driving shaft (31); the driven wheel (36) is fixed on the driven shaft (37); the synchronous belt (35) is connected between the driving wheel (34) and the driven wheel (38); 36); the driving device (38) is connected to the driving shaft (31) by power and drives the driving shaft (31) to rotate; the synchronous belt (35) comprises a tooth surface segment (351) and a plane segment (352); during the rotation of the driving shaft (31), the driving wheel (34) is always in contact with the tooth surface segment (351), and the driven wheel (36) can contact with both the tooth surface segment (351) and the plane segment (352); when the driven wheel (36) contacts the plane segment (352), slippage occurs between the two and power cannot be transmitted; The driving device (38) is a motor; the motor is a reduction motor with a reduction gear set; the rack (33) and the synchronous belt (35) are arranged in parallel.

2. The compact linear and rotary synchronous integrated actuator according to claim 1 is characterized in that: Circular limiting plates are integrally provided on both sides of the driving wheel (34) and the driven wheel (36); the synchronous belt (35) is limited between the circular limiting plates.

3. The compact linear and rotary synchronous integrated actuator according to claim 2 is characterized in that: The belt teeth width of the tooth surface segment (351) is smaller than the width of the synchronous belt (35); the wheel surfaces of the driving wheel (34) and the driven wheel (36) are provided with gear teeth along the axial portion and are matched with the synchronous belt (35).

4. The compact linear and rotary synchronous integrated actuator according to claim 1, characterized in that: It also comprises an elastic damping device, which is connected to the driven shaft (37); the elastic damping device provides a damping effect when the driven shaft (37) rotates.

5. The compact linear and rotary synchronous integrated actuator according to claim 4 is characterized in that: The elastic damping device comprises a slot (41) and an elastic protrusion (42) that can be engaged with each other; the fixing method is any one of the following two fixing methods: first, the slot (41) is fixed to the driven shaft (37), and the elastic protrusion (42) is fixed to the object on which the actuator is installed; second, the slot (41) is fixed to the object on which the actuator is installed, and the elastic protrusion (42) is fixed to the driven shaft (37); and when the driven shaft (37) rotates, the elastic protrusion (42) is not completely separated from the slot (41).

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