CN215761155U

CN215761155U - Double-push-rod mechanism

Info

Publication number: CN215761155U
Application number: CN202121671175.7U
Authority: CN
Inventors: 陈小平; 周翔; 何启成; 候兴飞; 李之龙
Original assignee: Yunmi Internet Technology Guangdong Co Ltd
Current assignee: Yunmi Internet Technology Guangdong Co Ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-02-08
Anticipated expiration: 2031-07-22

Abstract

The utility model relates to a double-push-rod mechanism, which comprises a push plate and a power component for driving the push plate; wherein, two groups of push rods are arranged on the push plate, and the power component comprises a driving component and a tooth-lacking gear in transmission connection with the driving component; at least two tooth-shaped parts are arranged on the circumference of the gear with missing teeth at intervals; the push plate is provided with a rack suitable for the tooth-shaped part; the gear-lacking gear is driven by the driving component to enable the tooth-shaped part to be meshed or separated with the rack; when the tooth-shaped part is meshed with the rack, the driving assembly drives the push plate to move, so that the two groups of push rods on the push plate push the two door bodies of the household appliance.

Description

Double-push-rod mechanism

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of household appliances, in particular to a double-push-rod mechanism.

[ background of the utility model ]

With the progress of the technology, in the field of household appliances, the automatic opening of the household appliance door body becomes a necessary function of the current intelligent household appliances, and at present, a door opening mechanism frequently used adopts a door opening mode of pushing the door body, so that the inventor finds the following problems in the use process:

the household electrical appliances comprise double-door household electrical appliances, two door opening mechanisms are often required to be arranged for controlling the double-door household electrical appliances respectively in order to realize automatic door opening of two opposite door bodies, however, the two door bodies of the double-door household electrical appliances are door bodies with the same containing cavity, the double-door household electrical appliances are often opened simultaneously when in use, the manufacturing cost is improved by a mode that the two door opening mechanisms control a single door body, and meanwhile, the two door opening mechanisms are required to be controlled independently or cooperatively, so that the control logic complexity is increased.

In view of the above, it is necessary to develop a dual push rod mechanism to solve the above problems.

[ Utility model ] content

Aiming at the defects of the prior art, the utility model aims to provide a double-push-rod mechanism, which comprises a push plate and a power component for driving the push plate;

wherein, two groups of push rods are arranged on the push plate, and the power component comprises a driving component and a tooth-lacking gear in transmission connection with the driving component; at least two tooth-shaped parts are arranged on the circumference of the gear with missing teeth at intervals;

the push plate is provided with a rack suitable for the tooth-shaped part; the gear-lacking gear is driven by the driving component to enable the tooth-shaped part to be meshed or separated with the rack;

when the tooth-shaped part is meshed with the rack, the driving assembly drives the push plate to move, so that the two groups of push rods on the push plate push the two door bodies of the household appliance.

Preferably, the number of the tooth-shaped parts is two, the two tooth-shaped parts are symmetrically arranged along the axial direction of the gear with the missing teeth, a groove part is formed between the two tooth-shaped parts, and the rack is arranged in a gap with the groove part.

Preferably, the driving assembly comprises a power source and a power transmission unit;

wherein, a worm is arranged on the power output end of the power source;

the power transmission unit comprises a worm wheel and a gear set which are meshed with the worm, and the worm wheel and the gear with missing teeth are transmitted through the gear set.

Preferably, the gear set comprises a first transmission gear and a second transmission gear, a gear is concentrically arranged on the worm gear, the first transmission gear is meshed with the gear on the worm gear, and the first transmission gear is meshed with the second transmission gear.

Preferably, the gear with the missing teeth is provided with driving teeth, and the driving teeth are meshed with the second transmission gear so that the power source drives the gear with the missing teeth to rotate.

Preferably, the device also comprises a bracket, and a reset unit is arranged between the bracket and the push plate;

when the tooth-shaped part is meshed with the rack, the reset unit deforms to store kinetic energy; when the tooth-shaped part is separated from the rack, the reset unit returns and pulls the push plate to move.

Preferably, the support is provided with a limiting groove, and the push plate abuts against the inner wall of the limiting groove through the corresponding two side faces of the push plate so as to limit the sliding direction of the push plate.

Preferably, the push plate comprises two sliding members arranged at a gap and a connecting part connecting the two sliding members, and the push rod is arranged on the sliding members.

Preferably, the power member is accommodated in a gap formed by the two sliding members, the connecting portion is located above the power member, and the rack is disposed in the gap of the sliding members.

Preferably, the slide member is integrally combined with the connecting portion to form a main structure of the push plate.

Compared with the prior art, the utility model has the beneficial effects that:

according to the double-push-rod mechanism provided by the utility model, the two push rods are arranged on the push plate, so that the power component drives the push plate, and further drives the two push rods to push the two door bodies, and the double-push-rod mechanism is simple in structure and convenient to use; on the other hand, be provided with two at least scarce tooth portions on the scarce tooth gear to reduced the stroke of single top in-process push rod, in order to avoid the push rod to stretch out the overlength and influence user experience.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

[ description of the drawings ]

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

FIG. 1 is a schematic perspective view of a dual push rod mechanism according to the present invention;

FIG. 2 is a schematic view of a portion of the dual push rod mechanism of the present invention;

FIG. 3 is a schematic perspective view of a power member in the dual push rod mechanism according to the present invention;

FIG. 4 is a right side view of the power member in the dual push rod mechanism of the present invention;

FIG. 5 is a schematic perspective view of a push plate in the dual push rod mechanism according to the present invention;

fig. 6 is a schematic perspective view of a gear with missing teeth in the dual push rod mechanism of the present invention.

Description of reference numerals:

31. pushing the plate;

311. a sliding member; 313. a push rod; 315. a rack; 317. a connecting portion;

34. a reset unit;

35. a support; 353. a positioning column;

36. a drive assembly; 361. a power source; 362. a worm; 363. a worm gear; 364. a first drive gear; 365. a second transmission gear;

37. a gear with missing teeth; 371. a groove part; 372. a tooth-shaped portion; 373. the drive teeth.

[ detailed description ] embodiments

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, which will enable those skilled in the art to practice the present invention with reference to the accompanying specification. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict. It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1 and 2, the present invention relates to a dual push rod mechanism, which comprises a push plate 31 and a power member for driving the push plate 31, wherein the power member drives the push plate 31 to reciprocate along a linear direction;

the push plate 31 is provided with two groups of push rods 313, the two groups of push rods 313 are used for pushing two door bodies on the household appliance, the push rods 313 are driven by a power component to push the two door bodies, the manufacturing cost is reduced, the structure of the double-push-rod mechanism is simple, and the control logic is simplified; the power component comprises a driving assembly 36 and a tooth-missing gear 37 in transmission connection with the driving assembly 36; at least two tooth-shaped parts 372 are arranged on the tooth-lacking gear 37, the tooth-shaped parts 372 are circumferentially arranged on the outer edge of the tooth-lacking gear 37, and a groove part 371 is formed between every two adjacent tooth-shaped parts 372;

the push plate 31 is provided with a rack 315 suitable for the tooth-shaped part 372, the tooth-shaped part 372 is meshed with the rack 315, and the groove part 371 is arranged at intervals with the rack 315, so that the tooth-lacking gear 37 and the rack 315 are switched between a meshed state and a separated state;

when the tooth-shaped portion 372 is engaged with the rack 315, the driving assembly 36 drives the push plate 31 to move, so that the two groups of push rods 313 on the push plate 31 push two doors of the household appliance.

The double-push-rod mechanism further comprises a support 35, a reset unit 34 is arranged between the support 35 and the push plate 31, an elastic reset unit 34 is arranged between a fixed base surface of the support 35 and the push plate 31, two ends of the reset unit 34 are connected to the support 35 and the push plate 31, and when the push plate 31 is driven to move by a power member, the reset unit 34 deforms under the action of the movement of the push plate 31;

when the toothed portion 372 is engaged with the rack 315, the reset unit 34 is deformed to store kinetic energy; when the toothed portion 372 is disengaged from the rack 315, the reset unit 34 restores and pulls the push plate 31 to move.

In a preferred embodiment, referring to fig. 6, the number of the tooth-shaped portions 372 is two, two tooth-shaped portions 372 are symmetrically arranged in the axial direction of the gear 37 with no teeth, a groove portion 371 is formed between the two tooth-shaped portions 372, the rack 315 is arranged in a gap with the groove portion 371, and the two tooth-shaped portions 372 are symmetrically arranged in the axial direction of the gear 37 with no teeth, so that the gear 37 with no teeth rotates once, and the gear 37 with no teeth alternately turns to the disengaged state twice from the engaged state.

In the existing door opening device, in order to ensure the torque of an output end and increase the size of the gear with missing teeth 37 so as to improve the transmission ratio, because stronger adsorption force exists between a door body of a household appliance and a box body of the household appliance, the push rod mechanism is used for overcoming the adsorption force, so that the door body is separated from the box body; the size of the toothless gear 37 of the existing door opening device is large, so that the problem that the stroke of the push rod component is too long is easily caused in the driving process, the extending length process of the push rod component after pushing the door opening body is caused to interfere the normal use of household appliances of a user, and the user experience is influenced.

In order to solve the above problem, in this embodiment, the tooth-shaped portion 372 that engages with the push plate 31 to move is divided into two groups, and on the premise that the size of the tooth-lacking gear 37 is not changed, the work adjustment that the tooth-lacking gear 37 rotates for one circle to drive the push plate 31 to reciprocate is that the work adjustment that the tooth-lacking gear 37 rotates for one circle to drive the push plate 31 to reciprocate for two times, so that the stroke of the push plate 31 is reduced, and the use experience is optimized.

As shown in fig. 3 and 4, in a preferred embodiment, the driving assembly 36 includes a power source 361 and a power transmission unit connected to the power source 361;

wherein, a power output shaft of the power source 361 is provided with a worm 363;

the transmission unit comprises a worm wheel 363 meshed with the worm 363 and a transmission gear set in transmission connection with the worm wheel 363; the missing-tooth gear 37 is provided with a driving tooth 373, and the driving tooth 373 is engaged with the second transmission gear 365 so that the power source 361 drives the missing-tooth gear 37 to rotate.

Furthermore, the transmission gear set comprises a first transmission gear 364 and a second transmission gear 365 in transmission connection with the first transmission gear 364, a gear is arranged on the worm wheel 363, the first transmission gear 364 is meshed with the gear, and the second transmission gear 365 is meshed with the driving gear 373, wherein the number of meshed teeth in the transmission gear set is different, so that the transmission ratio is different, the speed reduction effect is realized, and the output torque is further improved.

The support 35 is provided with a limiting groove, the push plate 31 abuts against the inner wall of the limiting groove through the corresponding two side faces of the push plate 31 to limit the sliding direction of the push plate 31, meanwhile, the push plate 31 is provided with a positioning column 353, the transmission gear set and the tooth-lacking gear 37 are sleeved on the positioning column, and the push plate 31 is further provided with an installation position of a power source 361, so that a power member is accurately installed on the support 35, and smooth transmission is guaranteed.

As shown in fig. 5, the push plate 31 includes two slide members 311 disposed at an interval such that an accommodation space is formed between the two slide members 311, an

A connecting portion 317 connecting the two slide members 311; the push rod 313 is disposed on the sliding member 311, the push rod 313 extends from one end of the sliding member 311 to form an ejection part, and the connecting portion 317 is used for connecting the two sliding members 311, so that the power member drives the two sliding members 311 to move simultaneously when driving. Meanwhile, the length of the connecting portion 317 determines the distance between the two push rods 313, and the connecting portion 317 is disposed on the two sliding members 311 so as to control the distance between the two push rods 313 within a range of pushing the two door bodies respectively.

The power member is accommodated in the accommodating space formed by the two sliding members 311, the connecting portion 317 is located above the power member, the power member is used for forming a protective cover body through the connecting portion 317, the influence of misoperation on normal transmission of the power member is avoided, the rack 315 is arranged in a gap of the sliding members 311, specifically, the rack 315 is arranged on one side edge of the accommodating space, and the power member is arranged at a position close to the center line of the push plate 31, so that the push plate 31 moves more stably.

The sliding member 311 is integrally combined with the connecting portion 317 to form a main structure of the push plate 31, so as to be integrally molded and provide sufficient strength to the push plate 31.

It should be understood that the above-described embodiments are only illustrative of portions of the present application and are not intended to limit the scope of the present application.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

Claims

1. A double-push-rod mechanism is characterized by comprising a push plate and a power component for driving the push plate;

the push plate is provided with two groups of push rods, and the power component comprises a driving assembly and a tooth-missing gear in transmission connection with the driving assembly; at least two tooth-shaped parts are arranged on the circumference of the gear with missing teeth at intervals;

the push plate is provided with a rack suitable for the tooth-shaped part; the gear with the missing teeth is driven by the driving assembly to enable the tooth-shaped part to be meshed with or separated from the rack;

when the tooth-shaped part and the rack are in a meshed state, the driving assembly drives the push plate to move, so that the two groups of push rods on the push plate push the two door bodies of the household appliance.

2. The dual push rod mechanism as claimed in claim 1, wherein the number of the tooth-shaped portions is two, the two tooth-shaped portions are symmetrically arranged in the axial direction of the gear with no teeth, a groove portion is formed between the two tooth-shaped portions, and the rack is arranged in a gap with the groove portion.

3. The dual push rod mechanism of claim 2, wherein the drive assembly includes a power source and a power transmission unit;

wherein, a worm is arranged on the power output end of the power source;

the power transmission unit comprises a worm wheel and a gear set, wherein the worm wheel is meshed with the worm, and the worm wheel is in transmission with the gear with missing teeth through the gear set.

4. A dual push rod mechanism according to claim 3, wherein the gear set comprises a first transmission gear and a second transmission gear, the worm gear is concentrically provided with a gear, the first transmission gear is meshed with the gear on the worm gear, and the first transmission gear is meshed with the second transmission gear.

5. The dual push rod mechanism as claimed in claim 4, wherein the gear with missing teeth is provided with a driving tooth, and the driving tooth is engaged with the second transmission gear so that the power source drives the gear with missing teeth to rotate.

6. The dual push rod mechanism of any one of claims 1-5, further comprising a support, wherein a reset unit is disposed between the support and the push plate;

when the tooth-shaped part is meshed with the rack, the reset unit deforms to store kinetic energy; when the tooth-shaped part is separated from the rack, the reset unit restores and pulls the push plate to move.

7. The dual push rod mechanism according to claim 6, wherein the bracket is provided with a limiting groove, and the push plate abuts against an inner wall of the limiting groove through corresponding two side surfaces thereof to limit a sliding direction of the push plate.

8. A dual push rod mechanism according to any one of claims 1 to 5, wherein said push plate comprises two sliding members disposed with a gap therebetween and a connecting portion connecting said two sliding members, said push rod being disposed on said sliding members.

9. A dual pushrod mechanism according to claim 8 wherein the power element is received in a gap formed by the two sliding elements, the connecting portion is located above the power element, and the rack is located in the gap of the sliding elements.

10. A dual push rod mechanism according to claim 8, wherein the slide member is integrally joined with the connecting portion to form a body structure of the push plate.