CN210737158U - Rotary damper and drum washing machine - Google Patents

Abstract

The utility model provides a rotary damper and drum type washing machine, rotary damper includes: the fixing part is provided with a first connecting part used for being connected with the fixing part; the rotating part is rotatably connected with the fixed part and is provided with a second connecting part used for being connected with the rotating part; and the limiting part is arranged on the rotating part and is used for being matched with the fixing part in a butting way so as to limit the rotating amplitude of the rotating part relative to the fixing part. This application is through setting up spacing portion in rotation portion, and the portion drives the rotatory in-process of rotating relative mounting in rotation, can end the cooperation of supporting with the mounting to prevent to rotate the excessive rotation of relative mounting. Therefore, the rotary damper is used for connecting the drum of the top-opening drum washing machine with the door cover on the drum, and the effect of preventing the door cover from being excessively closed can be achieved, so that the phenomenon of top dead of the door cover is prevented. In addition, the damper with the small size is only required to be improved, the door cover with the large size does not need to be changed, the cost is reduced, and the application range is wide.

Description

Rotary damper and drum washing machine

Technical Field

The utility model relates to a attenuator technical field particularly, relates to a rotary damper and contain rotary washing machine of this rotary damper.

Background

At present, a common top-opening drum washing machine in the market is provided with a door cover on an inner drum, and the door cover can rotate around a rotating shaft to the inner space or the outer space of the inner drum. However, the existing structure often causes the door cover to be excessively closed to the inner space of the inner cylinder, and even the door cover can be dead.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, an object of the present invention is to provide a rotary damper.

Another object of the present invention is to provide a drum washing machine including the above rotary damper.

In order to achieve the above object, the present invention provides a rotary damper for connecting a fixing member and a rotating member, so that the rotating member is connected to the fixing member in a rotating manner, the rotary damper comprising: the fixing part is provided with a first connecting part used for being connected with the fixing part; the rotating part is rotatably connected with the fixed part and is provided with a second connecting part used for being connected with the rotating part; and the limiting part is arranged on the rotating part and used for being matched with the fixing part in a stop and abutting mode so as to limit the rotating amplitude of the rotating part relative to the fixing part.

The utility model discloses technical scheme of the first aspect provides a rotary damper through set up spacing portion in rotation portion, drives the rotatory in-process of a relative mounting in rotation portion, can end the cooperation with the mounting to prevent to rotate a relative mounting overrotation. Therefore, the rotary damper is used for connecting the drum of the top-opening drum washing machine with the door cover on the drum, and the effect of preventing the door cover from being excessively closed can be achieved, so that the phenomenon of top dead of the door cover is prevented. In addition, compare in setting up limit structure on the door closure and preventing the excessive scheme of door closure rotation, this application only needs to improve small-size attenuator, and need not to change the large-size door closure, is favorable to reduce cost, and can be applicable to the door closure of various materials such as plastics door closure, panel beating door closure, can also be applicable to other occasions that need restrict rotation range of piece, and application scope is wide, is favorable to marketing.

Specifically, the rotary damper includes a fixed portion, a rotating portion, and a stopper portion. The fixing part is connected with the fixing part through the first connecting part, and the rotary damper is assembled and fixed with the fixing part. The rotating part is connected with the rotating part through the second connecting part, and the rotating damper and the rotating part are assembled and fixed. The fixed part is rotatably connected with the rotating part and can rotate relatively, the fixed part and the fixed part are kept relatively static, and the rotating part are kept relatively static, so that the rotating part is driven to rotate relative to the fixed part when rotating relative to the fixed part, and the rotating part and the fixed part are rotatably connected. Meanwhile, the limiting part on the rotating part also rotates along with the rotating part, and when the limiting part rotates to a position matched with the fixed part in a stop manner, the rotating part is limited to continue rotating, so that the rotating amplitude of the rotating part is limited, and the rotating part is prevented from excessively rotating.

It should be noted that the fixed member is referred to relative to the rotating member in this application and does not mean that the fixed member is necessarily held stationary. In other words, the fixed part and the rotating part are rotationally connected through the rotary damper, so that the relative rotation between the rotating part and the fixed part is ensured; the fixing member itself may be stationary or may rotate. Such as: the drum of the top-opening drum washing machine is used as a fixed part, the door cover on the drum is used as a rotating part, the drum and the door cover are connected in a rotating mode through the rotary damper, and the door cover can rotate relative to the drum. However, the drum may be rotated during washing of the laundry in the washing machine.

Additionally, the utility model provides a rotary damper among the above-mentioned technical scheme can also have following additional technical characteristics:

in the above technical solution, optionally, the limiting portion includes a limiting rib.

Spacing portion includes spacing muscle, and spacing muscle simple structure, intensity is higher, is favorable to improving spacing reliability. Meanwhile, the limiting ribs can also play a role of reinforcing ribs, the strength of the rotating part is improved, and the use reliability of the rotary damper is further improved.

In the above technical solution, the limiting rib extends along the axial direction of the rotating portion.

Spacing muscle is followed the axial extension of rotation portion, then the cooperation is only supported with the mounting to the length direction's of spacing muscle wall, is favorable to increasing the area of contact of spacing muscle and mounting, and then improves spacing muscle and mounting and only supports the complex reliability.

In the above technical scheme, the rotating part includes a rotating cylinder, and the limiting ribs are arranged on the outer side wall of the rotating cylinder and extend to the two axial ends of the rotating cylinder.

The rotating part comprises a rotating cylinder, the rotating cylinder is used as at least part of a shell of the rotary damper, and a damping structure or other structures of the rotary damper can be installed in the rotating cylinder. Spacing muscle is established on the lateral wall of a rotatory section of thick bamboo, and extends to the axial both ends of a rotatory section of thick bamboo, has further prolonged the length of spacing muscle, is favorable to further increasing the area of contact of spacing muscle and mounting, and then further improves spacing muscle and mounting and ends to the complex reliability.

In the technical scheme, the thickness of one end, connected with the rotating part, of the limiting rib is larger than that of one end, far away from the rotating part, of the limiting rib.

The thickness of the one end of rotation portion is connected to spacing muscle is greater than the thickness that the rotation portion was kept away from to spacing muscle, can improve the joint strength of spacing muscle and rotation portion, reduces spacing muscle breaking occurrence's probability to improve rotary damper's use reliability.

In the above technical solution, optionally, the limiting portion includes a limiting convex hull.

Spacing portion includes spacing convex closure, and spacing convex closure is compared in spacing muscle, and small in size, simple structure is favorable to reducing the raw materials, reduction in production cost.

In the technical scheme, the number of the limiting convex hulls is multiple, and the limiting convex hulls are arranged along the axial direction of the rotating part at intervals.

The quantity of spacing convex closure is a plurality of, and a plurality of spacing convex closures set up along the axial interval of rotation portion, are favorable to increasing the area of contact of spacing portion and mounting, and then improve spacing portion and mounting and end to the complex reliability.

In any of the above technical solutions, the first connecting portion includes a first mounting rib, and the first mounting rib is used for being embedded in a first mounting groove provided in the fixing member; and/or, the second connecting portion includes the second installation muscle, the second installation muscle is used for imbedding in the second mounting groove that the rotation piece set up.

The first connecting part comprises a first mounting rib which can be embedded into a first mounting groove arranged on the fixing part, so that a good positioning effect can be achieved, and the assembly positioning between the rotary damper and the fixing part is ensured; meanwhile, the rotary damper can play a good limiting role, the probability of the conditions of play, displacement and the like of the rotary damper in the using process is reduced, and therefore the using reliability of the product is improved.

The second connecting part comprises a second mounting rib which can be embedded into a second mounting groove arranged on the rotating part, so that a good positioning effect can be achieved, and the assembly positioning between the rotary damper and the rotating part is ensured; meanwhile, the rotary damper can play a good limiting role, the probability of the conditions of play, displacement and the like of the rotary damper in the using process is reduced, and therefore the using reliability of the product is improved.

The utility model discloses technical scheme of second aspect provides a drum type washing machine, include: the upper end of the box body is provided with an opening; the roller is arranged in the box body, and a throwing opening is formed in the side wall of the roller; the door cover is arranged at the throwing port and used for opening or closing the throwing port; in the rotary damper according to any one of the first aspect, the first connection portion of the rotary damper is connected to the drum, and the second connection portion of the rotary damper is connected to the door cover, so that the door cover is rotatably connected to the drum.

The utility model discloses the technical scheme of the second aspect provides a drum type washing machine, because the lateral wall of its box upper end opening and cylinder is equipped with puts in the mouth, therefore for top-opening drum type washing machine. Since the drum washing machine includes the rotary damper according to any one of the first aspect, all the advantages of any one of the above technical solutions are achieved, and are not described herein again.

In the above technical scheme, the door cover is a split door cover, and two doors of the split door cover are respectively rotatably connected with the drum through the rotary damper.

The door cover is a split door cover, that is, the door cover comprises two doors which can be respectively marked as a front door cover and a rear door cover. The two doors are rotatably connected with the roller through the rotary damper, so that the rotation amplitude of the two doors is effectively controlled, and the phenomenon that the door covers rotate excessively or even are deadly pushed can be effectively prevented.

In the above technical solution, the drum is provided with a first reinforcing plate, the first reinforcing plate is provided with a first mounting groove adapted to a first mounting rib of the rotary damper, and the first reinforcing plate is adapted to be in abutting fit with a limiting portion of the rotary damper; and/or, the door closure is equipped with the second reinforcing plate, the second reinforcing plate is equipped with and is used for the adaptation the second mounting groove of rotary damper's second installation muscle.

The cylinder is equipped with first reinforcing plate, sets up first mounting groove on first reinforcing plate, and then in rotary damper's first installation muscle can imbed this first mounting groove, realization positioning action and limiting displacement. Simultaneously, first reinforcing plate intensity is higher, is favorable to improving the intensity of cylinder and the joint strength of cylinder and rotary damper.

The door closure is equipped with the second reinforcing plate, sets up the second mounting groove on the second reinforcing plate, then in rotary damper's second installation muscle can imbed this second mounting groove, realizes positioning action and limiting displacement. Meanwhile, the second reinforcing plate is higher in strength, and the strength of the door cover and the connection strength of the door cover and the rotary damper are improved.

In the above technical scheme, the door cover is a sheet metal part.

Because the door closure of sheet metal component is difficult for processing limit structure, therefore the drum type washing machine who adopts the door closure of sheet metal component adopts the scheme of this application, can effectively solve the rotatory excessive even dead problem of top of door closure.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a rotary damper according to some embodiments of the present invention;

FIG. 2 is a schematic view of the assembly of the drum and the door according to some embodiments of the present invention;

FIG. 3 is a schematic top view of the structure shown in FIG. 2;

FIG. 4 is a schematic sectional view taken along line A-A in FIG. 3;

FIG. 5 is an enlarged schematic view of the portion B of FIG. 4;

fig. 6 is a schematic partial structure diagram of a drum washing machine according to some embodiments of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:

1 rotary damper, 11 fixed parts, 111 first installation muscle, 12 rotating parts, 121 second installation muscle, 122 rotatory section of thick bamboo, 13 spacing muscle, 14 pivots, 2 cylinder, 21 first reinforcing plates, 22 first mounting grooves, 3 door closures, 31 front door closure, 32 back door closure, 33 second reinforcing plates, 34 second mounting grooves, 4 boxes, 5 case lids.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A rotary damper and a drum washing machine according to some embodiments of the present invention will be described with reference to fig. 1 to 6.

Embodiments of the first aspect, in particular rotary dampers, are first described.

Example one

A rotary damper 1 for connecting a fixed member and a rotating member such that the rotating member is rotatably connected to the fixed member, the rotary damper 1 comprising: a fixed part 11, a rotating part 12 and a limiting part.

Specifically, the fixing portion 11 is provided with a first connecting portion (e.g., a first mounting rib 111) for connecting with a fixing member.

The rotating part 12 is rotatably connected to the fixed part 11, and is provided with a second connecting part (e.g., a second mounting rib 121) for connecting to the rotating member.

The limiting portion (e.g., the limiting rib 13) is disposed on the rotating portion 12 for abutting engagement with the fixed member, as shown in fig. 5, to limit the rotation amplitude of the rotating member relative to the fixed member.

The utility model discloses the embodiment of the first aspect provides a rotary damper 1, through set up spacing portion on rotation portion 12, rotate the rotatory in-process of a piece of relatively fixed part at rotation portion 12 drive, can end the cooperation with the mounting to prevent to rotate a piece of relatively fixed part overrotation. Therefore, the rotary damper 1 is used to connect the drum 2 of the top-loading drum washing machine and the door 3 on the drum 2, as shown in fig. 1 to 4, so as to prevent the door 3 from being closed excessively, thereby preventing the door 3 from being dead-backed.

In addition, compare in setting up limit structure on door closure 3 and prevent that door closure 3 from rotating excessive scheme, this application only needs to improve small-size attenuator, and need not to change large-size door closure 3, is favorable to reduce cost, and can be applicable to the door closure 3 of various materials such as plastics door closure 3, panel beating door closure 3, can also be applicable to other occasions that need restrict the rotation range of piece, and application scope is wide, is favorable to marketing.

Specifically, the rotary damper 1 includes a fixed portion 11, a rotating portion 12, and a stopper portion. The fixing portion 11 is connected to the fixing member through the first connecting portion, so that the rotary damper 1 is assembled and fixed to the fixing member. The rotating part 12 is connected with the rotating part through a second connecting part, so that the rotary damper 1 and the rotating part are assembled and fixed. Since the fixed portion 11 is rotatably connected to the rotating portion 12, relative rotation can occur, while the fixed portion 11 remains stationary relative to the fixed member and the rotating portion 12 remains stationary relative to the rotating member, so that rotation of the rotating portion 12 relative to the fixed portion 11 also drives rotation of the rotating member relative to the fixed member, thereby achieving rotational connection of the rotating member and the fixed member. Meanwhile, the limiting part on the rotating part 12 also rotates along with the rotating part 12, and when the limiting part rotates to the position matched with the fixed part in a stopping way, the rotating part 12 is limited to continue rotating, so that the rotating amplitude of the rotating part is limited, and the rotating part is prevented from excessively rotating.

It should be noted that the fixed member is referred to relative to the rotating member in this application and does not mean that the fixed member is necessarily held stationary. In other words, the fixed part and the rotating part are rotationally connected through the rotary damper 1, and the relative rotation between the rotating part and the fixed part is ensured; the fixing member itself may be stationary or may rotate.

Such as: the roller 2 of the top-opening type roller washing machine is used as a fixed part, the door cover 3 on the roller 2 is used as a rotating part, the roller 2 and the door cover 3 are connected in a rotating mode through the rotary damper 1, and the door cover 3 can rotate relative to the roller 2. The drum 2 may be rotated during washing of the laundry in the washing machine.

Optionally, the spacing portion comprises a spacing rib 13, as shown in fig. 1.

Spacing portion includes spacing muscle 13, and spacing muscle 13 simple structure, intensity is higher, is favorable to improving spacing reliability. Meanwhile, the limiting ribs 13 can also play a role of reinforcing ribs, so that the strength of the rotating part 12 is improved, and the use reliability of the rotary damper 1 is further improved.

Wherein the limiting rib 13 extends in the axial direction of the rotating part 12, as shown in fig. 1.

Spacing muscle 13 is followed the axial extension of rotation portion 12, then the cooperation is only supported with the mounting to the length direction's of spacing muscle 13 wall, is favorable to increasing the area of contact of spacing muscle 13 and mounting, and then improves spacing muscle 13 and mounting and only supports the complex reliability.

Further, the rotating portion 12 includes a rotating cylinder 122, and the limiting ribs 13 are disposed on an outer side wall of the rotating cylinder 122 and extend to two axial ends of the rotating cylinder 122, as shown in fig. 1.

The rotating part 12 includes a rotary cylinder 122, and the rotary cylinder 122 serves as at least a partial housing of the rotary damper 1, and a damping structure of the rotary damper 1 or other structures may be installed therein. Spacing muscle 13 is established on the lateral wall of a rotatory section of thick bamboo 122, and extends to the axial both ends of a rotatory section of thick bamboo 122, has further prolonged the length of spacing muscle 13, is favorable to further increasing the area of contact of spacing muscle 13 and mounting, and then further improves spacing muscle 13 and mounting and ends to the complex reliability.

Wherein, fixed part 11 also can include a rotatory section of thick bamboo, and the internal diameter and the external diameter of a rotatory section of thick bamboo are the same with the rotatory section of thick bamboo of rotation portion 12, and this makes the structure of rotary damper 1 comparatively regular, the machine-shaping of being convenient for, also the assembly of being convenient for.

Further, the thickness of the end of the limiting rib 13 connected with the rotating part 12 is larger than the thickness of the end of the limiting rib 13 far away from the rotating part 12, as shown in fig. 1.

The thickness that the one end of rotation portion 12 was connected to spacing muscle 13 is greater than the thickness that rotation portion 12 was kept away from to spacing muscle 13, can improve the joint strength of spacing muscle 13 and rotation portion 12, reduces spacing muscle 13 and takes place cracked probability to improve rotary damper 1's use reliability.

Example two

The difference from the first embodiment is that: the limiting part comprises a limiting convex hull.

Spacing portion includes spacing convex closure, and spacing convex closure is compared in spacing muscle 13, small in size, and simple structure is favorable to reducing the raw materials, reduction in production cost.

Further, the number of the limiting convex hulls is multiple, and the multiple limiting convex hulls are arranged at intervals along the axial direction of the rotating part 12.

The quantity of spacing convex closure is a plurality of, and a plurality of spacing convex closures set up along the axial interval of rotation portion 12, are favorable to increasing the area of contact of spacing portion and mounting, and then improve spacing portion and mounting and end to the complex reliability.

EXAMPLE III

The difference from the first embodiment is that: the stopper is not limited to the form of the stopper rib 13 or the stopper convex hull. Such as: the cross section of the rotating part 12 is non-circular, for example, it is D-shaped or cross-shaped, and the space on the fixing member that is engaged with the rotating part 12 is not enough to ensure the rotating part 12 to rotate in the whole circumference, so that the rotating part 12 can only rotate within the set angle range, when the rotating part 12 rotates to the limit value, part of the outer side wall of the rotating part 12 abuts against the fixing member, and at this time, a limit part is formed on the partial surface of the rotating part 12.

In any of the above embodiments, the first connecting portion includes the first mounting rib 111, and the first mounting rib 111 is configured to be inserted into the first mounting groove 22 provided in the fixing member.

The first connecting part comprises a first mounting rib 111, the first mounting rib 111 can be embedded into a first mounting groove 22 arranged on the fixing piece, a good positioning effect can be achieved, and the assembly positioning between the rotary damper 1 and the fixing piece is guaranteed; meanwhile, the rotary damper can play a good limiting role, the probability of the conditions of play, displacement and the like of the rotary damper 1 in the using process is reduced, and therefore the using reliability of the product is improved.

Further, the first connecting portion may further include other connecting structures, such as a connecting hole for installing a fastener such as a screw, a connecting column, or the like, or a welding structure for welding the fixing portion 11, or other structures for achieving the fixed connection between the fixing portion 11 and the fixing member; and these structures may be engaged with the first mounting rib 111 or may be independent of the first mounting rib 111.

Further, the second connecting portion includes a second mounting rib 121, and the second mounting rib 121 is configured to be inserted into a second mounting groove 34 provided in the rotating member.

The second connecting part comprises a second mounting rib 121, the second mounting rib 121 can be embedded into a second mounting groove 34 arranged on the rotating part, a good positioning effect can be achieved, and the assembly positioning between the rotary damper 1 and the rotating part is guaranteed; meanwhile, the rotary damper can play a good limiting role, the probability of the conditions of play, displacement and the like of the rotary damper 1 in the using process is reduced, and therefore the using reliability of the product is improved.

Further, the second connecting portion may further include other connecting structures, such as a connecting hole for installing a fastener such as a screw, a connecting column, or the like, or a welding structure for welding the fixing portion 11, or other structures for fixedly connecting the fixing portion 11 and the rotating member; and these structures may be engaged with the second mounting rib 121 or may be independent of the second mounting rib 121.

Of course, the rotary damper 1 may also be provided with a structure such as a rotating shaft 14, which is matched with the fixed member and the rotating member. The rotating shaft 14 may be a solid shaft or a hollow shaft.

As shown in fig. 6, an embodiment of the second aspect of the present invention provides a drum washing machine, including: a cabinet 4, a drum 2, a door 3, and a rotary damper 1 as in any one of the first aspect embodiments.

Specifically, an opening is formed at the upper end of the box body 4, and a box cover 5 is further arranged at the opening at the upper end of the box body 4, as shown in fig. 6.

The roller 2 is arranged in the box body 4, and the side wall of the roller 2 is provided with a throwing opening.

The door cover 3 is arranged at the throwing port and used for opening or closing the throwing port.

The first connecting portion of the rotary damper 1 is connected to the drum 2, and the second connecting portion of the rotary damper 1 is connected to the door cover 3, so that the door cover 3 is rotatably connected to the drum 2.

The embodiment of the second aspect of the present invention provides a drum washing machine, which is a top-opening drum washing machine because the upper end opening of the box body 4 and the side wall of the drum 2 are provided with the throwing port. Since the drum washing machine includes the rotary damper 1 according to any one of the embodiments of the first aspect, all the advantages of any one of the embodiments described above are provided, and are not described herein again.

Further, the door cover 3 is a split door cover 3, as shown in fig. 1 to 4, two doors of the split door cover 3 are respectively rotatably connected with the drum 2 through the rotary damper 1, as shown in fig. 1 to 4.

The door cover 3 is a half-open door cover 3, i.e. the door cover 3 comprises two doors, which can be respectively referred to as a front door cover 31 and a rear door cover 32, as shown in fig. 1 to 4. Two doors are rotatably connected with the roller 2 through the rotary damper 1, so that the rotating amplitude of the two doors is effectively controlled, and the phenomenon that the door cover 3 is excessively rotated or even deadly jacked can be effectively prevented.

One of the front door cover 31 and the rear door cover 32 can be provided with a door hook, the other door cover can be provided with a clamping groove, and when the two doors are buckled, the door hook hooks the clamping groove to close the throwing opening on the side wall of the roller 2; when the door hook is separated from the clamping groove, the two doors can be opened in a rotating mode, the throwing opening in the side wall of the roller 2 is opened, and therefore the opening and the sealing of the inner space of the roller 2 are completed.

Further, the drum 2 is provided with a first reinforcing plate 21, as shown in fig. 5, the first reinforcing plate 21 is provided with a first mounting groove 22 for adapting to the first mounting rib 111 of the rotary damper 1, and the first reinforcing plate 21 is adapted to be in abutting fit with the limiting portion of the rotary damper 1.

The cylinder 2 is equipped with first reinforcing plate 21, sets up first mounting groove 22 on first reinforcing plate 21, then the first installation muscle 111 of rotary damper 1 can imbed in this first mounting groove 22, realizes positioning action and limiting displacement. Meanwhile, the strength of the first reinforcing plate 21 is high, which is beneficial to improving the strength of the roller 2 and the connection strength of the roller 2 and the rotary damper 1.

Further, the door cover 3 is provided with a second reinforcing plate 33, and as shown in fig. 5, the second reinforcing plate 33 is provided with a second mounting groove 34 for fitting the second mounting rib 121 of the rotary damper 1.

The door closure 3 is provided with a second reinforcing plate 33, and a second mounting groove 34 is provided on the second reinforcing plate 33, so that the second mounting rib 121 of the rotary damper 1 can be embedded into the second mounting groove 34, thereby realizing the positioning function and the limiting function. Meanwhile, the second reinforcing plate 33 has high strength, which is beneficial to improving the strength of the door cover 3 and the connection strength of the door cover 3 and the rotary damper 1.

Optionally, the door cover 3 is a sheet metal part.

Because the difficult processing limit structure of door closure 3 of sheet metal component, therefore the drum type washing machine who adopts door closure 3 of sheet metal component adopts the scheme of this application, can effectively solve 3 rotatory excessive even dead problems in top of door closure.

Of course, the door 3 may also be a plastic part or a partial plastic part.

One specific example is described below.

A damper with a limiting structure is provided, as shown in figure 1, and the damper is provided with two mounting rib positions (namely a first mounting rib 111 and a second mounting rib 121) and a limiting rib 13. Wherein first installation muscle position (being second installation muscle 121) assembles together with door closure 3, but for the activity end, second installation muscle position (being first installation muscle 111) assembles with the reinforcing plate on the cylinder 2, is the stiff end. The limiting rib 13 and the first mounting rib are positioned on the damper shell at the movable end.

When the door closure 3 is closed and opened, the limiting rib 13 rotates along with the movable part of the damper shell, when the door closure is closed to a certain angle, the limiting rib 13 is deadly jacked with the reinforcing plate on the roller 2, as shown in fig. 5, so that the limiting effect is achieved, and the door closure 3 is prevented from being blocked due to the fact that the door closure 3 is excessively closed.

Therefore, the top-opening drum washing machine adopting the rotary damper 1 can solve the problem of jamming caused by over-closing of the door cover 3; and the realization is simpler, the complex design is not needed, and the cost is not increased.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A rotary damper for connecting a fixed member to a rotatable member such that the rotatable member is rotatably connected to the fixed member, the rotary damper comprising:

a fixing part (11) provided with a first connecting part for connecting with the fixing part;

the rotating part (12) is rotatably connected with the fixed part (11) and is provided with a second connecting part used for being connected with the rotating part;

and the limiting part is arranged on the rotating part (12) and is used for being matched with the fixing part in a stop and abutting mode so as to limit the rotating amplitude of the rotating part relative to the fixing part.

2. The rotary damper of claim 1,

the limiting part comprises a limiting rib (13).

3. The rotary damper according to claim 2,

the limiting rib (13) extends along the axial direction of the rotating part (12).

4. The rotary damper according to claim 3,

the rotating part (12) comprises a rotating cylinder (122), and the limiting ribs (13) are arranged on the outer side wall of the rotating cylinder (122) and extend to the two axial ends of the rotating cylinder (122).

5. The rotary damper according to claim 2,

the thickness of the end, connected with the rotating part (12), of the limiting rib (13) is larger than the thickness of the end, far away from the rotating part (12), of the limiting rib (13).

6. The rotary damper of claim 1,

the limiting part comprises a limiting convex hull.

7. The rotary damper according to claim 6,

the number of the limiting convex hulls is multiple, and the limiting convex hulls are arranged along the axial direction of the rotating part (12) at intervals.

8. The rotary damper according to any one of claims 1 to 7,

the first connecting part comprises a first mounting rib (111), and the first mounting rib (111) is used for being embedded into a first mounting groove (22) of the fixing piece; and/or

The second connecting portion comprises a second mounting rib (121), and the second mounting rib (121) is embedded into a second mounting groove (34) formed in the rotating piece.

9. A drum washing machine characterized by comprising:

the box body (4), the upper end of the box body (4) is provided with an opening;

the roller (2) is arranged in the box body (4), and a feeding opening is formed in the side wall of the roller (2);

the door cover (3) is arranged at the throwing port and used for opening or closing the throwing port;

the rotary damper according to any of claims 1 to 8, a first connection of the rotary damper being connected to the drum (2) and a second connection of the rotary damper being connected to the door (3) for rotationally connecting the door (3) to the drum (2).

10. A drum washing machine according to claim 9,

the door cover (3) is a split door cover (3), and two doors of the split door cover (3) are respectively connected with the roller (2) in a rotating mode through the rotary damper.

11. A drum washing machine according to claim 9 or 10,

the roller (2) is provided with a first reinforcing plate (21), the first reinforcing plate (21) is provided with a first mounting groove (22) used for being matched with a first mounting rib (111) of the rotary damper, and the first reinforcing plate (21) is suitable for being matched with a limiting part of the rotary damper in a stop manner; and/or

The door cover (3) is provided with a second reinforcing plate (33), and the second reinforcing plate (33) is provided with a second mounting groove (34) for adapting to a second mounting rib (121) of the rotary damper.

12. A drum washing machine according to claim 9 or 10,

the door cover (3) is a sheet metal part.

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