One-way clutch device, door opening and closing mechanism and household appliances

Abstract

The present application provides a one-way clutch device, a door opening and closing mechanism, and a household appliance. The one-way clutch device includes a coaxially arranged drive wheel and a transmission wheel, the transmission wheel is provided with a tooth groove, and the drive wheel is formed with a slide groove. The one-way clutch device also includes a slider arranged in the slide groove, a clutch member extending from the slide groove toward the transmission wheel, and an elastic member fixed to the drive wheel and cooperating with the clutch member. When the drive wheel starts to rotate, the slider moves along the slide groove under the action of inertia, presses the clutch member toward the transmission wheel until the end of the clutch member is inserted into the tooth groove, and drives the transmission wheel to rotate. When the drive wheel stops rotating, the clutch member withdraws from the tooth groove under the action of the elastic member. The door opening and closing mechanism using the above-mentioned one-way clutch device can smoothly realize the switching between automatic and manual opening and closing modes, is easy to implement, and improves user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliance production, and in particular to a one-way clutch device, a door opening and closing mechanism, and household appliance equipment. Background Art

[0002] With the improvement of living standards, users' performance requirements for various household appliances such as refrigerators, ovens, and microwave ovens are also increasing. The industry has disclosed a type of electric door opening mechanism for household appliances, which can realize the automatic opening or closing of the door body and improve the user experience. The above-mentioned electric door opening mechanism usually needs to be equipped with a corresponding clutch device so that the corresponding household appliances have two different operating modes: manual and automatic. The existing mechanical clutch cannot achieve the ideal switching effect. The current solution mainly relies on the on-off control of the electromagnetic clutch to realize the switching between the two operating modes. It is noisy and has a high cost, which limits its use.

[0003] In view of this, it is necessary to provide a new one-way clutch device, a door opening and closing mechanism and a household appliance. Summary of the Invention

[0004] The object of the present invention is to provide a one-way clutch device, a door opening and closing mechanism and a household appliance, which can smoothly switch the opening and closing mode of the door body, have a reliable structure and improve the user experience.

[0005] To achieve the above-mentioned invention objectives, the present application provides a one-way clutch device, comprising a coaxially arranged drive wheel and a transmission wheel, wherein the transmission wheel is provided with a tooth groove, and the drive wheel is formed with a slide groove. The one-way clutch device also includes a slider disposed in the slide groove, a clutch member extending from the slide groove toward the transmission wheel, and an elastic member fixed to the drive wheel and cooperating with the clutch member. When the drive wheel starts to rotate, the slider moves along the slide groove under the action of inertia, and the clutch member moves toward the transmission wheel under the pressure of the slider until the end of the clutch member is inserted into the tooth groove, thereby driving the transmission wheel to rotate. When the drive wheel stops rotating, the clutch member is removed from the tooth groove under the action of the elastic member.

[0006] As a further improvement of the embodiment of the present application, the driving wheel includes a seat body, the seat body has an inner wall and an outer wall arranged radially opposite to each other, the slide groove extends circumferentially between the inner wall and the outer wall, and the transmission wheel is radially arranged on the inner side of the inner wall.

[0007] As a further improvement to the embodiment of the present application, the slide grooves are provided in at least two numbers and the at least two slide grooves are evenly arranged along the circumferential direction.

[0008] As a further improvement of the embodiment of the present application, the inner wall is provided with an opening, the elastic member is fixedly provided at the opening of the inner wall and a through hole is formed in the elastic member, and the clutch member radially passes through the through hole.

[0009] As a further improvement of the embodiment of the present application, the inner wall is formed with a card slot located on both sides of the opening and extending axially, and one end of the card slot is open; the elastic part has a fixed part clamped in the card slot, an elastic part connected to the fixed part, and the through hole is arranged in the middle position of the elastic part.

[0010] As a further improvement to the embodiment of the present application, a positioning groove is formed on one side of the outer wall facing the inner wall. When the driving wheel stops rotating, the clutch member extends toward one end of the outer wall into the positioning groove.

[0011] As a further improvement of the embodiment of the present application, a pressure-bearing surface is formed on one end of the clutch member facing the outer wall, and a pressing surface that cooperates with the pressure-bearing surface is provided on the side of the slider facing the clutch member.

[0012] As a further improvement of the embodiment of the present application, the driving wheel includes a seat and a shell fixed to each other, the seat forming a receiving cavity for accommodating the transmission wheel; the shell has a cover for shielding the receiving cavity.

[0013] As a further improvement to the embodiment of the present application, the sliders are arranged in groups of two relative to each other in the corresponding sliding grooves along the circumferential direction, and the clutch member is located between the two sliders.

[0014] As a further improvement of the embodiment of the present application, the one-way clutch device also includes a core shaft arranged along the axis of the transmission wheel and fixed to the transmission wheel, a connecting gear fixed on the core shaft and arranged adjacent to the transmission wheel, and the driving wheel is rotatable relative to the core shaft.

[0015] The present application also provides a door opening and closing mechanism, comprising a driving source and the one-way clutch device as described above, wherein the driving source is used to drive the driving wheel to rotate.

[0016] As a further improvement to the embodiment of the present application, an outer ring gear is provided on the outer periphery of the driving wheel, and the door opening and closing mechanism further includes a worm gear arranged at the output end of the driving source and cooperating with the outer ring gear.

[0017] The present application also provides a household appliance, including a box body and a door body, wherein a door opening and closing mechanism as described above is provided between the box body and the door body, and when the driving wheel drives the transmission wheel to rotate, the door body is driven to open or close automatically; when the door body is manually opened or closed, the transmission wheel rotates accordingly, and the driving wheel remains fixed.

[0018] The beneficial effects of the present application are: by adopting the one-way clutch device and the door opening and closing mechanism of the present application, the slider moves along the slide groove under the action of inertia and presses against the clutch member to connect the drive wheel with the transmission wheel, and the drive wheel drives the transmission wheel to rotate together to realize automatic opening and closing of the door; when the drive wheel stops, the clutch member withdraws from the tooth groove, and the drive wheel is separated from the transmission wheel; and when the door body of the household appliance is manually opened or closed, the drive wheel remains fixed to avoid stress shock to the drive source. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the one-way clutch device of the present application;

[0020] Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the one-way clutch device

[0021] Figure 3 It is a schematic diagram of the planar structure of the one-way clutch device of the present application;

[0022] Figure 4 This is a schematic planar structural diagram of the one-way clutch device of the present application from another angle;

[0023] Figure 5 yes Figure 4 A schematic diagram of the planar structure of the one-way clutch device after removing the connecting gear and the housing;

[0024] Figure 6 It is a structural diagram of the door opening and closing mechanism of this application. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings. However, the embodiments do not limit the present invention, and any structural, methodological, or functional changes made by those skilled in the art based on the embodiments are all within the scope of protection of the present invention.

[0026] Ginseng Figure 1 and Figure 2 As shown, the one-way clutch device 100 provided in the present application includes a core shaft 1, a transmission wheel 2 fixedly arranged on the core shaft 1 along the circumferential direction, and a driving wheel 3 coaxially arranged with the transmission wheel 2, and the driving wheel 3 is rotatable relative to the core shaft 1.

[0027] Combine Figures 3 to 5As shown, the transmission wheel 2 is provided with a tooth groove 21, and the drive wheel 3 is formed with a circumferentially extending slide groove 301. The one-way clutch device 100 also includes a slider 4 disposed within the slide groove 301, a clutch member 5 extending from the slide groove 301 toward the transmission wheel 2, and an elastic member 6 fixed to the drive wheel 3 and cooperating with the clutch member 5. The slider 4 is typically made of a high-density metal or alloy to ensure that it can push the clutch member 5 into the tooth groove 21 of the transmission wheel 2. The contact surface between the slider 4 and the slide groove 301 is kept smooth to facilitate reciprocating sliding of the slider 4 within the slide groove 301.

[0028] When the drive wheel 3 starts rotating under the influence of an external force, the slider 4 moves along the slide groove 301 under the action of inertia. The clutch member 5, under the pressure of the slider 4, moves toward the transmission wheel 2 until the end of the clutch member 5 is inserted into the tooth groove 21. The transmission wheel 2 and the drive wheel 3 are connected as a whole through the clutch member 5, and the drive wheel 3 drives the transmission wheel 2 to rotate together. When the drive wheel 3 drives the transmission wheel 2 to rotate together, torque is transmitted to the transmission wheel 2 through the clutch member 5, that is, a pressure force is generated between the clutch member 5 and the tooth groove 21. In turn, the static friction between the clutch member 5 and the corresponding side walls of the tooth groove 21 overcomes the elastic stress of the elastic member 6 on the clutch member 5, so that the clutch member 5 is retained in the tooth groove 21. When the drive wheel 3 stops rotating, the clutch member 5 withdraws from the tooth groove 21 under the elastic action of the elastic member 6, and the transmission wheel 2 and the drive wheel 3 are separated. The drive wheel 3 can remain in a fixed position when the transmission wheel 2 moves. Accordingly, the one-way clutch device 100 can realize switching between different operating modes.

[0029] The driving wheel 3 includes a base body 31 and a shell 32 fixed to each other, and the base body 31 forms a receiving cavity for accommodating the transmission wheel 2. The base body 31 includes an inner wall 311 and an outer wall 312 arranged radially opposite to each other, and the transmission wheel 2 is located on the inner side of the inner wall 311 and is arranged adjacent to the inner wall 311. The slide groove 301 is located between the inner wall 311 and the outer wall 312 and is provided with at least two, and at least two of the slide grooves 301 are evenly arranged along the circumferential direction. The shell 32 includes a cover plate 321 for shielding the receiving cavity and an outer gear ring 322 arranged along the outer edge of the cover plate 321. The cover plate 321 and the outer wall 312 are fixed by screws (not shown) arranged along the axial direction, and the outer gear ring 322 is located on the outside of the outer wall 312.

[0030] Specifically, the base 31 also includes a partition wall 313 connecting the inner wall 311 and the outer wall 312 and used to distinguish adjacent chute slots 301. The partition wall 313 ensures structural strength between the inner wall 311 and the outer wall 312. The inner wall 311 is provided with an opening 314, and the clutch member 5 is configured to extend radially from the opening 314 toward the transmission wheel 2. The outer wall 312 is provided with at least two first fixing holes 315 evenly distributed along the circumference. The first fixing holes 315 are preferably located at the junction of the outer wall 312 and the partition wall 313. The cover plate 321 is provided with at least two second fixing holes 323 adjacent to the edge thereof, corresponding to the positions of the first fixing holes 315.

[0031] The elastic member 6 is fixedly mounted at the opening 314 of the inner wall 311. The elastic member 6 is formed with a through-hole 61, and the clutch member 5 radially extends through the through-hole 61. Here, the inner wall 311 is formed with slots 316 located on either side of the opening 314 and extending axially. The elastic member 6 includes a fixed portion 62 that is secured within the slot 316 and an elastic portion 63 connected to the fixed portion 62. The elastic member 6 is formed entirely from a bent metal sheet, with the through-hole 61 positioned in the middle of the elastic portion 63. The clutch member 5 includes a base 51 that abuts the elastic portion 63 and a connecting portion 52 that extends from the base 51 and through the through-hole 61. The slot 316 is open toward one end of the housing 32, allowing the fixed portion 62 to be inserted axially into the slot 316.

[0032] The clutch member 5 has a pressure-bearing surface 53 formed on one end thereof facing the outer wall 312. The pressure-bearing surface 53 is disposed on the side of the base portion 51 facing away from the connecting portion 52. The slider 4 has a pressing surface 41 formed on the side facing the clutch member 5, which cooperates with the pressure-bearing surface 53. The pressure-bearing surface 53 and the pressing surface 41 have substantially the same inclination angle, ensuring that the pressure-bearing surface 53 and the pressing surface 41 maintain surface-to-surface contact during the sliding and compressing process of the slider 4, thereby preventing surface damage. Of course, considering the actual application, the slider 4 slides along the circumferential direction and is connected to the clutch 5, that is, the clutch 5 also bears the circumferential stress applied to it by the slider 4, and the clutch 5 as a whole remains movable. Therefore, the clutch 5 will produce a certain angular deviation under the action of the above-mentioned circumferential stress. The pressure-bearing surface 53 and the pressure-resisting surface 41 can further consider the above-mentioned angular deviation in the actual design, and the angle of the pressure-bearing surface 53 deviating from the radial direction is designed to be slightly smaller than the angle of the pressure-resisting surface 41 deviating from the radial direction, so as to better ensure that the two are in surface-to-surface contact during actual work.

[0033] The sliders 4 are arranged in pairs in the corresponding slide grooves 301 along the circumferential direction, and the clutch member 5 is located between the two sliders 4. By having two different sliders 4 on either side of the clutch member 5, when the drive wheel 3 starts to rotate in different directions, one of the sliders 4 can press the clutch member 5, causing the connecting portion 52 to extend into the tooth groove 21, thereby driving the transmission wheel 2 to rotate.

[0034] In this embodiment, the outer wall 312 is further recessed on one side of the inner wall 311 to form a positioning groove 317. When the drive wheel 3 stops rotating, the clutch 5 extends into the positioning groove 317 at one end toward the outer wall 312, that is, a portion of the base 51 extends into the positioning groove 317. The positioning groove 317 increases the movable space of the clutch 5, facilitates the structural design of the clutch 5, and prevents the clutch 5 from being deflected too much at the moment of being pressed by the slider 4. Of course, when the drive wheel 3 stops rotating, at least a portion of the pressure-bearing surface 53 needs to remain in the slide groove 301, so that when the drive wheel 3 starts rotating, the slider 4 can directly press on the pressure-bearing surface 53.

[0035] The one-way clutch device 100 further includes a coupling gear 7 fixed to the core shaft 1. The coupling gear 7 facilitates external assembly connection and torque output. Preferably, the coupling gear 7 is disposed on a side of the housing 32 facing away from the seat body 31 and is axially adjacent to the transmission wheel 2. The cover plate 321 is located between the transmission wheel 2 and the coupling gear 7. Here, the core shaft 1 is disposed through the drive wheel 3. The one-way clutch device 100 further includes a clamp 8 disposed on a side of the seat body 31 facing away from the housing 32. The clamp 8 helps maintain the relative positional relationship between the drive wheel 3 and the core shaft 1 along the axial direction.

[0036] To achieve circumferential fixed assembly of the transmission wheel 2 and the core shaft 1, and of the coupling gear 7 and the core shaft 1, the core shaft 1 is illustratively formed with a first assembly portion 11 that mates with the transmission wheel 2, and a second assembly portion 12 that mates with the coupling gear 7. The first assembly portion 11 and the second assembly portion 12 can be specifically configured as a D-shape or other anti-rotation structure, which will not be described in detail here. Furthermore, the core shaft 1 is further formed with a third assembly portion 13 located between the first assembly portion 11 and the second assembly portion 12. A gap is provided between the third assembly portion 13 and the cover 32 to enable the drive wheel 3 to rotate relative to the core shaft 1. The third assembly portion 13 is circumferentially configured in a circular shape to reduce the entry of foreign matter, impurities, etc. into the aforementioned accommodating cavity.

[0037] Ginseng Figure 6As shown, the present application further provides a door opening and closing mechanism 200, comprising the aforementioned one-way clutch device 100 and a driving source 201, wherein the driving source 201 is used to drive the driving wheel 3 to rotate, and the driving source 201 is generally configured as a motor of predetermined specifications.

[0038] Here, the door opening and closing mechanism 200 further includes a worm 202 disposed at the output end of the drive source 201 and engaged with the outer ring gear 322 of the drive wheel 3. The door opening and closing mechanism 200 also includes an actuating wheel 203 meshing with the coupling gear 7. In actual applications, the coupling gear 7 can also transmit torque to a gear set or other actuating mechanism as required.

[0039] The present application also provides a household appliance (not shown), comprising a housing and a door body, wherein the housing has a storage chamber open to the front, and the door body is pivotally connected to the housing to open or close the storage chamber. A door opening and closing mechanism 200 as described above is provided between the housing and the door body, and when the driving wheel 3 drives the transmission wheel 2 to rotate, the actuating wheel 203 also rotates accordingly, thereby driving the door body to automatically open or close. When the door body is manually opened or closed, the actuating wheel 203 and the transmission wheel 2 rotate accordingly, but the transmission wheel 2 and the driving wheel 3 remain separated, and the driving wheel 3 remains in a fixed position, effectively avoiding stress impact on the driving source 201. Of course, the door body can also be set as a sliding door body, which can be achieved by making corresponding settings for the actuating mechanism connecting the door body and the connecting gear 7.

[0040] In summary, the one-way clutch device 100, door opening and closing mechanism 200, and household appliance of the present application can smoothly switch between different operating modes, reduce noise, and lower manufacturing costs. The slider 4 moves along the slide groove 301 under the action of inertia and presses against the clutch member 5 to connect the drive wheel 3 with the transmission wheel 2. The drive wheel 3 drives the transmission wheel 2 to rotate together, realizing automatic door opening and closing. When the drive wheel 3 stops, the clutch member 5 withdraws from the tooth groove 21, and the drive wheel 3 and transmission wheel 2 automatically separate. Furthermore, when the door body of the one-way clutch device 100 is manually opened or closed, the drive wheel 3 remains fixed to protect the drive source 201 from external impact.

[0041] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0042] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A one-way clutch device comprising a coaxially arranged drive wheel and a transmission wheel, characterized in that: The transmission wheel is provided with a tooth groove, the driving wheel is formed with a slide groove, and the one-way clutch device further includes a slider arranged in the slide groove, a clutch member extending from the slide groove toward the transmission wheel, and an elastic member fixed to the driving wheel and cooperating with the clutch member; when the driving wheel starts to rotate, the slider moves along the slide groove under the action of inertia, and the clutch member moves toward the transmission wheel to the end of the clutch member under the pressure of the slider and is inserted into the tooth groove, thereby driving the transmission wheel to rotate; when the driving wheel stops rotating, the clutch member withdraws from the tooth groove under the action of the elastic member, and the driving wheel includes a seat body, the elastic member has a fixing portion arranged on the seat body, an elastic portion connected to the fixing portion, the elastic portion is provided with a through hole, and the clutch member radially penetrates the through hole.

2. The one-way clutch device according to claim 1, characterized in that: The seat body has an inner wall and an outer wall arranged opposite to each other in the radial direction. The sliding groove is circumferentially extended between the inner wall and the outer wall. The transmission wheel is radially arranged on the inner side of the inner wall.

3. The one-way clutch device according to claim 2, characterized in that: The number of the slide grooves is at least two and the at least two slide grooves are evenly arranged along the circumferential direction.

4. The one-way clutch device according to claim 2, characterized in that: The inner wall is provided with an opening, and the elastic member is fixedly arranged at the opening of the inner wall.

5. The one-way clutch device according to claim 4, characterized in that: The inner wall is formed with a clamping groove located on both sides of the opening and extending along the axial direction, and one end of the clamping groove is open; the fixing portion of the elastic member is clamped in the clamping groove, and the through hole is arranged in the middle position of the elastic portion.

6. The one-way clutch device according to claim 2, characterized in that: A positioning groove is formed on one side of the outer wall facing the inner wall. When the driving wheel stops rotating, the clutch member extends toward one end of the outer wall into the positioning groove.

7. The one-way clutch device according to claim 2, characterized in that: A pressure-bearing surface is formed on one end of the clutch member facing the outer wall, and a pressing surface matching the pressure-bearing surface is provided on one side of the sliding block facing the clutch member.

8. The one-way clutch device according to claim 1, characterized in that: The driving wheel includes a seat and a shell fixed to each other, the seat forms a receiving cavity for accommodating the transmission wheel; the shell has a cover plate for shielding the receiving cavity.

9. The one-way clutch device according to claim 1, characterized in that: The sliding blocks are arranged in pairs in the corresponding sliding grooves relative to each other along the circumferential direction, and the clutch member is located between the two sliding blocks.

10. The one-way clutch device according to claim 1, characterized in that: The one-way clutch device further includes a core shaft arranged along the axis of the transmission wheel and fixed to the transmission wheel, a connecting gear fixed on the core shaft and arranged adjacent to the transmission wheel, and the driving wheel is rotatable relative to the core shaft.

11. A door opening and closing mechanism, comprising a driving source, characterized in that: The door opening and closing mechanism further includes a one-way clutch device as described in any one of claims 1 to 10, and the driving source is used to drive the driving wheel to rotate.

12. The door opening and closing mechanism according to claim 11, characterized in that: An outer gear ring is provided on the outer periphery of the driving wheel, and the door opening and closing mechanism further comprises a worm which is arranged at the output end of the driving source and cooperates with the outer gear ring.

13. A household appliance comprising a housing and a door, characterized in that: A door opening and closing mechanism as described in claim 11 or 12 is provided between the box body and the door body. When the driving wheel drives the transmission wheel to rotate, the door body is driven to open or close automatically; when the door body is manually opened or closed, the transmission wheel rotates accordingly and the driving wheel remains fixed.

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