Refrigerator damper device and refrigerator

Abstract

The present invention relates to a refrigerator damper device and a refrigerator, wherein the refrigerator damper device comprises: a first damper; a second damper arranged side by side with the first damper; a first driven intermittent gear drivingly connected to the first damper to open and / or close the first damper; a first driving intermittent gear drivingly matched with the first driven intermittent gear, and a protrusion is provided on the end face of one end of the first driving intermittent gear along its axial direction; a second driven intermittent gear drivingly connected to the second damper to open and / or close the second damper; a second driving intermittent gear drivingly matched with the second driven intermittent gear, and the second driving intermittent gear is coaxially arranged with the first driving intermittent gear, and a stopper located on the rotation track of the protrusion is provided on the end face of the second driving intermittent gear close to one end of the first driving intermittent gear, so that the second driving intermittent gear can rotate forward and reverse under the drive of the first driving intermittent gear.

Description

Technical Field

[0001] The present invention relates to the field of household appliances, and in particular to a refrigerator damper device and a refrigerator. Background Art

[0002] The evaporator of a frost-free air-cooled refrigerator features automatic defrosting, eliminating the need for regular manual defrosting. This provides a superior user experience, and as a result, these refrigerators are becoming increasingly popular in the home appliance market. However, frost-free air-cooled refrigerators generally require electric dampers to control the opening and closing of the cooling duct. The cooling duct is equipped with two dampers, which are used to deliver cold air to different storage spaces or to adjust the air volume in the duct by controlling the opening and closing status of the two dampers. In existing technology, each damper is controlled by a motor, resulting in a complex structure and high cost. Summary of the Invention

[0003] The present invention aims to provide a refrigerator damper device and a refrigerator, so as to improve the problems of the refrigerator damper driving device in the prior art, such as the complex structure and high cost.

[0004] According to one aspect of an embodiment of the present invention, the present invention provides a refrigerator damper device, the refrigerator damper device comprising:

[0005] First air door;

[0006] a second damper, arranged side by side with the first damper;

[0007] a first driven intermittent gear, drivingly connected to the first damper to open and / or close the first damper;

[0008] A first active intermittent gear is coupled to the first driven intermittent gear, and a protrusion is provided on an end surface of one axial end of the first active intermittent gear;

[0009] a second driven intermittent gear, drivingly connected to the second damper to open and / or close the second damper;

[0010] The second active intermittent gear is matched with the second driven intermittent gear in transmission. The second active intermittent gear is coaxially arranged with the first active intermittent gear, and a stopper located on the rotation track of the protrusion is provided on the end face of the second active intermittent gear close to one end of the first active intermittent gear, so that the second active intermittent gear can rotate forward and reverse under the drive of the first active intermittent gear.

[0011] In some embodiments, the first driven intermittent gear includes a first intermittent tooth and a first sliding fitting portion arranged side by side along the circumference of the first driven intermittent gear, and the first driving intermittent gear includes a second intermittent tooth that can be meshed with the first intermittent tooth and a second sliding fitting portion that can be slidably fitted with the first sliding fitting portion.

[0012] In some embodiments, the second sliding fitting portion includes a sector-shaped component centered on the axis of the first active intermittent gear, and the first sliding fitting portion includes a concave arc surface that fits the circumference of the sector-shaped component.

[0013] In some embodiments,

[0014] The first intermittent tooth and the first sliding fitting portion are arranged along the axial direction of the first driven intermittent gear;

[0015] The second intermittent teeth and the second sliding fitting portion are arranged along the axial direction of the first driving intermittent gear.

[0016] In some embodiments, the second driven intermittent gear includes a third intermittent tooth and a third sliding fitting portion arranged side by side along the circumference of the second driven intermittent gear, and the second active intermittent gear includes a fourth intermittent tooth that can engage with the third intermittent tooth and a fourth sliding fitting portion that can slide with the third sliding fitting portion.

[0017] In some embodiments, the fourth sliding fitting portion includes a sector-shaped component centered on the axis of the second driving intermittent gear, and the third sliding fitting portion includes a concave arc surface that fits the circumference of the sector-shaped component.

[0018] In some embodiments,

[0019] The third intermittent tooth and the third sliding fitting portion are arranged along the axial direction of the second driven intermittent gear;

[0020] The fourth intermittent tooth and the fourth sliding fitting portion are arranged along the axial direction of the second driving intermittent gear.

[0021] In some embodiments, the first active intermittent gear includes a second intermittent tooth and a second sliding fitting portion arranged along its circumference, and a fourth intermittent tooth and a fourth sliding fitting portion arranged along the circumference of the second active intermittent gear. When the protrusion and the stopper contact, the second intermittent tooth and the fourth intermittent tooth are arranged at intervals in the circumference of the first active intermittent gear so that one of the first damper and the second damper moves first and the other moves later.

[0022] In some embodiments, the refrigerator damper device further includes a limiting component for limiting the rotation angle of the second active intermittent gear.

[0023] In some embodiments, the limiting component extends along the circumference of the second active intermittent gear, a sector-shaped gap is formed between two ends of the limiting component along the circumference of the second active intermittent gear, and the stopper is provided in the sector-shaped gap.

[0024] In some embodiments, the refrigerator damper device further includes a blocking component for releasably limiting the rotation of the second driving intermittent gear.

[0025] In some embodiments, the second active intermittent gear is provided with a plurality of clamping grooves arranged along its circumference, and the blocking component includes an elastic clamping component adapted to the clamping grooves.

[0026] According to another aspect of the present invention, a refrigerator is provided. The refrigerator includes the above-mentioned refrigerator damper device.

[0027] By applying the technical solution of the present application, the damper device can control the first damper and the second damper by a driving component that drives the first active intermittent gear, thereby improving the problems of complex structure and high cost of the damper driving device of the refrigerator in the related art.

[0028] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A schematic structural diagram of a refrigerator damper device according to an embodiment of the present invention is shown;

[0031] Figure 2 A schematic diagram showing the three-dimensional structure of a damper driving device of a refrigerator damper device according to an embodiment of the present invention;

[0032] Figure 3 An exploded view of a damper driving device of a refrigerator damper device according to an embodiment of the present invention is shown;

[0033] Figure 4 A schematic structural diagram showing a first active intermittent gear and a first driven intermittent gear of a refrigerator damper device according to an embodiment of the present invention;

[0034] Figure 5 A schematic structural diagram showing a second active intermittent gear and a second driven intermittent gear of a refrigerator damper device according to an embodiment of the present invention;

[0035] Figure 6 A schematic structural diagram of a damper driving device of a refrigerator damper device according to an embodiment of the present invention is shown;

[0036] Figure 7 A schematic structural diagram showing a housing for mounting a damper driving device of a refrigerator damper device according to an embodiment of the present invention;

[0037] Figure 8 Shown Figure 7 A partial enlarged view of

[0038] Figure 9 A schematic top view of a housing for mounting a damper driving device of a refrigerator damper device according to an embodiment of the present invention is shown;

[0039] Figure 10 A schematic structural diagram showing a second active intermittent gear of a refrigerator damper device according to an embodiment of the present invention;

[0040] Figure 11 Shown Figure 9 Schematic diagram of the cross-section structure at CC in the middle; and

[0041] Figure 12 Shown Figure 11 A partial enlarged view of .

[0042] In the figure: 1. shell; 2. cover; 3. first damper; 31. first damper sealing component; 4. second damper; 41. second damper sealing component; 5. first active intermittent gear; 51. second intermittent tooth; 52. second sliding fitting portion; 53. protrusion; 54. power input wheel; 6. second active intermittent gear; 61. fourth intermittent tooth; 62. fourth sliding fitting portion; 63. block; 64. slot; 7. first driven intermittent gear; 71. first intermittent tooth; 72. first sliding fitting portion; 721. first convex corner portion; 8. second driven intermittent gear; 81. third intermittent tooth; 82. third sliding fitting portion; 821. second convex corner portion; 9. blocking component; 11. shaft; 111. second shaft segment; 112. limiting component; 113. fan-shaped notch. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying 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, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. 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.

[0044] like Figure 1 As shown, the refrigerator damper device of this embodiment includes a first damper 3, a second damper 4 arranged side by side with the first damper 3, and a damper driving device for opening and closing the first damper 3 and the second damper 4. The damper driving device is arranged between the first damper 3 and the second damper 4. The refrigerator damper device also includes a housing 1 for accommodating the damper driving device and a cover 2 provided on the open end of the housing 1.

[0045] Combine Figures 2 to 6 As shown, the damper driving device includes a first driven intermittent gear 7 , a first driving intermittent gear 5 , a second driven intermittent gear 8 and a second driving intermittent gear 6 .

[0046] The first driven intermittent gear 7 is drivingly connected to the first damper 3 to open and / or close the first damper 3; the first driving intermittent gear 5 is drivingly engaged with the first driven intermittent gear 7, and a protrusion 53 is provided on the end face of one axial end of the first driving intermittent gear 5. The second driven intermittent gear 8 is drivingly connected to the second damper 4 to open and / or close the second damper 4; the second driving intermittent gear 6 is drivingly engaged with the second driven intermittent gear 8.

[0047] The second driving intermittent gear 6 is coaxially arranged with the first driving intermittent gear 5, and a stopper 63 located on the rotation track of the protrusion 53 is provided on the end surface of the second driving intermittent gear 6 close to the first driving intermittent gear 5, so that the second driving intermittent gear 6 can rotate forward and reverse under the drive of the first driving intermittent gear 5.

[0048] Combine Figure 2 、 3 As shown in Figures 6 and 7, when the first driving intermittent gear 5 rotates counterclockwise (this is only an example of the technical solution of this embodiment and is not limited to the counterclockwise direction), the second intermittent tooth 51 of the first driving intermittent gear 5 rotates to engage with the first intermittent tooth 71 of the first driven intermittent gear 7. Then, the first driven intermittent gear 7 rotates under the drive of the first driving intermittent gear 5, thereby driving the first damper 3 to open. Then, after the first driving intermittent gear 5 further rotates counterclockwise by a certain angle, the protrusion 53 contacts the stopper 63, thereby allowing the second driving intermittent gear 6 to rotate under the drive of the first driving intermittent gear 5. After the fourth intermittent tooth 61 of the second driving intermittent gear 6 engages with the third intermittent tooth 81 of the second driven intermittent gear 8, the second driven intermittent gear 8 rotates, thereby driving the second damper 4 to open.

[0049] Furthermore, the first driving intermittent gear 5 rotates in the clockwise direction, the protrusion 53 separates from the stopper 63, and after the first driving intermittent gear 5 rotates a certain angle, the second intermittent tooth 51 of the first driving intermittent gear 5 meshes with the first intermittent tooth 71 of the first driven intermittent gear 7. The first driven intermittent gear 7 rotates under the drive of the first driving intermittent gear 5, thereby driving the first driven intermittent gear 7 to close the first damper 3. Then, after the first driving intermittent gear 5 rotates further in the clockwise direction by a certain angle, the protrusion 53 contacts the stopper 63, allowing the second driving intermittent gear 6 to rotate under the drive of the first driving intermittent gear 5. After the fourth intermittent tooth 61 of the second driving intermittent gear 6 meshes with the third intermittent tooth 81 of the second driven intermittent gear 8, the second driven intermittent gear 8 rotates, thereby driving the second damper 4 to close under the drive of the second driven intermittent gear 8.

[0050] To sum up, when the first active intermittent gear 5 rotates counterclockwise, the first damper 3 is first opened and then the second damper 4 is opened. When the first active intermittent gear 5 rotates clockwise, the first damper 3 is first closed and then the second damper 4 is closed. Therefore, any one of the first damper 3 and the second damper 4 of the damper device of this embodiment can be opened separately, and the opening degree of the first damper 3 and the second damper 4 can be controlled by the rotation angle of the intermittent gear.

[0051] The damper device of this embodiment can control the first damper 3 and the second damper 4 by a driving component (such as a motor) that drives the first active intermittent gear 5, thereby improving the problem of complex structure and high cost of the damper driving device of the existing refrigerator in the related art.

[0052] The first driving intermittent gear 5 is further provided with a power input wheel 54, and the power input wheel 54 is transmission-connected with the above-mentioned driving component.

[0053] In some embodiments, the damper device further includes a first gear shaft connected to the first driven intermittent gear 7 . Optionally, the first gear shaft is connected to the first damper 3 to drive the first damper 3 to rotate.

[0054] In some embodiments, the damper device further includes a second gear shaft connected to the second driven intermittent gear 8. Optionally, the second gear shaft is connected to the second damper 4 to drive the second damper 4 to rotate.

[0055] The first driven intermittent gear 7 includes a first intermittent tooth 71 and a first sliding fitting portion 72 arranged side by side along the circumference of the first driven intermittent gear 7, and the first active intermittent gear 5 includes a second intermittent tooth 51 that can mesh with the first intermittent tooth 71 and a second sliding fitting portion 52 that can slide with the first sliding fitting portion 72.

[0056] The second sliding engagement portion 52 comprises a sector-shaped component centered on the axis of the first driving intermittent gear 5. The first sliding engagement portion 72 comprises a concave arcuate surface that mates with the circumference of the sector-shaped component. The concave arcuate surface is positioned at different distances from the rotational center of the first driven intermittent gear 7. Therefore, when the concave arcuate surface mates with the circumference of the sector-shaped component, the first driven intermittent gear 7 is restricted from rotation. A first convex corner portion 721 at the end of the concave arcuate surface of the first sliding engagement portion 72 abuts the circumference of the sector-shaped component, restricting rotation of the first driven intermittent gear 7.

[0057] The first intermittent teeth 71 and the first sliding fitting portion 72 are arranged along the axial direction of the first driven intermittent gear 7 . The second intermittent teeth 51 and the second sliding fitting portion 52 are arranged along the axial direction of the first driving intermittent gear 5 .

[0058] The second driven intermittent gear 8 includes a third intermittent tooth 81 and a third sliding fitting portion 82 arranged side by side along the circumference of the second driven intermittent gear 8, and the second driving intermittent gear 6 includes a fourth intermittent tooth 61 that can engage with the third intermittent tooth 81 and a fourth sliding fitting portion 62 that can slide with the third sliding fitting portion 82.

[0059] The fourth sliding engagement portion 62 comprises a sector-shaped component centered on the axis of the second driving intermittent gear 6, and the third sliding engagement portion 82 comprises a concave arcuate surface that mates with the circumference of the sector-shaped component. The second convex corner portion 821 at the end of the concave arcuate surface of the third sliding engagement portion 82 abuts the circumference of the sector-shaped component to restrict rotation of the second driven intermittent gear 8.

[0060] The third intermittent teeth 81 and the third sliding fitting portion 82 are arranged along the axial direction of the second driven intermittent gear 8 . The fourth intermittent teeth 61 and the fourth sliding fitting portion 62 are arranged along the axial direction of the second driving intermittent gear 6 .

[0061] The first driving intermittent gear 5 includes a second intermittent tooth 51 and a second sliding fitting portion 52 arranged along its circumference, and a fourth intermittent tooth 61 and a fourth sliding fitting portion 62 arranged along the circumference of the second driving intermittent gear 6. When the protrusion 53 and the stopper 63 contact, the second intermittent tooth 51 and the fourth intermittent tooth 61 are arranged at intervals in the circumference of the first driving intermittent gear 5, so that one of the first damper 3 and the second damper 4 moves first and the other moves later.

[0062] like Figure 1 As shown, the damper device further comprises a first damper sealing component 31 provided on the first damper 3 and a second damper sealing component 41 provided on the second damper 4. The damper sealing component can be a sealing sponge.

[0063] Combine Figure 7 and 8 As shown, the refrigerator damper device further includes a limiting component 112 for limiting the rotation angle of the second active intermittent gear 6.

[0064] The limiting component 112 extends along the circumference of the second driving intermittent gear 6 . A sector-shaped notch 113 is formed between two ends of the limiting component 112 along the circumference of the second driving intermittent gear 6 . The stopper 63 is disposed in the sector-shaped notch 113 .

[0065] The damper device also includes a shaft 11 disposed within the housing 1. Both the first active intermittent gear 5 and the second active intermittent gear 6 are rotatably mounted on the shaft 11. The shaft 11 is a stepped shaft comprising a first shaft section and a second shaft section 111 having a smaller outer diameter than the first shaft section. A sector-shaped notch 113 is provided in the first shaft section. The stopper 63 on the second active intermittent gear 6 can rotate within the limited angle of the sector-shaped notch 113. The first shaft section forms the aforementioned stopper 112.

[0066] Combine Figures 9 to 12 As shown, the refrigerator damper device further includes a blocking component 9 for releasably limiting the rotation of the second driving intermittent gear 6 .

[0067] The second driving intermittent gear 6 is provided with a plurality of clamping grooves 64 arranged along its circumference, and the blocking component 9 includes an elastic clamping component adapted to the clamping grooves 64. In some embodiments, the blocking component 9 includes a leaf spring.

[0068] When the stopper 63 of the second active intermittent gear 6 is stopped by the fan-shaped notch 113 during its rotation, the top protrusion of the blocking component 9 is just embedded in the lower groove 64 of the second active intermittent gear 6, so that its free rotation in the reverse direction is constrained. This constraint is an elastic constraint, that is, when the force driving the second active intermittent gear 6 to rotate in the reverse direction is sufficient to overcome the elastic constraint force of the blocking component 9, the main gear can rotate.

[0069] By adopting this rotation angle limiting mechanism, an extreme movement angle can be provided for the movement of the intermittent mechanism, that is, the rotation movement can be stably stopped when it reaches a specific position, which can provide a reset reference for the control system and improve the stability of the damper switch control.

[0070] According to another aspect of the present invention, this embodiment further provides a refrigerator, which includes the above-mentioned refrigerator damper device.

[0071] The above are merely exemplary embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A refrigerator damper device, characterized in that: include: First damper (3); A second damper (4) is arranged side by side with the first damper (3); A first driven intermittent gear (7) is drivingly connected to the first damper (3) to open and / or close the first damper (3); A first active intermittent gear (5) is in transmission cooperation with the first driven intermittent gear (7), and a protrusion (53) is provided on an end surface of one axial end of the first active intermittent gear (5); A second driven intermittent gear (8) is drivingly connected to the second damper (4) to open and / or close the second damper (4); The second active intermittent gear (6) is in transmission cooperation with the second driven intermittent gear (8). The second active intermittent gear (6) is coaxially arranged with the first active intermittent gear (5), and a stopper (63) located on the rotation track of the protrusion (53) is provided on the end surface of the second active intermittent gear (6) close to one end of the first active intermittent gear (5), so that the second active intermittent gear (6) can rotate forward and reverse under the drive of the first active intermittent gear (5). The first driven intermittent gear (7) comprises a first intermittent tooth (71) and a first sliding fitting portion (72) arranged side by side along the circumference of the first driven intermittent gear (7); the first active intermittent gear (5) comprises a second intermittent tooth (51) that can mesh with the first intermittent tooth (71) and a second sliding fitting portion (52) that can slide with the first sliding fitting portion (72); The second sliding fitting portion (52) includes a sector-shaped component centered on the axis of the first active intermittent gear (5), and the first sliding fitting portion (72) includes a concave arc surface that fits the circumference of the sector-shaped component.

2. The refrigerator damper device according to claim 1, characterized in that: The first intermittent tooth (71) and the first sliding fitting portion (72) are arranged along the axial direction of the first driven intermittent gear (7); The second intermittent tooth (51) and the second sliding fitting portion (52) are arranged along the axial direction of the first active intermittent gear (5).

3. The refrigerator damper device according to claim 1, characterized in that: The second driven intermittent gear (8) comprises a third intermittent tooth (81) and a third sliding fitting portion (82) arranged side by side along the circumference of the second driven intermittent gear (8), and the second driving intermittent gear (6) comprises a fourth intermittent tooth (61) that can mesh with the third intermittent tooth (81) and a fourth sliding fitting portion (62) that can slide with the third sliding fitting portion (82).

4. The refrigerator damper device according to claim 3, characterized in that: The fourth sliding fitting portion (62) includes a sector-shaped component centered on the axis of the second active intermittent gear (6), and the third sliding fitting portion (82) includes a concave arc surface that fits the circumference of the sector-shaped component.

5. The refrigerator damper device according to claim 3, characterized in that: The third intermittent tooth (81) and the third sliding fitting portion (82) are arranged along the axial direction of the second driven intermittent gear (8); The fourth intermittent tooth (61) and the fourth sliding fitting portion (62) are arranged along the axial direction of the second active intermittent gear (6).

6. The refrigerator damper device according to claim 1, characterized in that: The first active intermittent gear (5) comprises a second intermittent tooth (51) and a second sliding fitting portion (52) arranged along its circumference, and the second active intermittent gear (6) comprises a fourth intermittent tooth (61) and a fourth sliding fitting portion (62) arranged along its circumference. When the protrusion (53) and the stopper (63) come into contact, the second intermittent tooth (51) and the fourth intermittent tooth (61) are arranged at intervals in the circumferential direction of the first active intermittent gear (5), so that one of the first damper (3) and the second damper (4) moves first and the other moves later.

7. The refrigerator damper device according to claim 1, characterized in that: It also includes a limiting component (112) for limiting the rotation angle of the second active intermittent gear (6).

8. The refrigerator damper device according to claim 7, characterized in that: The limiting component (112) extends along the circumference of the second active intermittent gear (6), a fan-shaped notch (113) is formed between two ends of the limiting component (112) along the circumference of the second active intermittent gear (6), and the stopper (63) is arranged in the fan-shaped notch (113).

9. The refrigerator damper device according to claim 1, characterized in that: It also includes a blocking component (9) that can releasably limit the rotation of the second active intermittent gear (6).

10. The refrigerator damper device according to claim 9, characterized in that: The second active intermittent gear (6) is provided with a plurality of clamping grooves (64) arranged along its circumference, and the blocking component (9) includes an elastic clamping component adapted to the clamping grooves (64).

11. A refrigerator, characterized in that: The refrigerator damper device comprises the refrigerator damper device according to any one of claims 1 to 10.

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