WO2018121721A1

WO2018121721A1 - Damper, and laundry machine using same

Info

Publication number: WO2018121721A1
Application number: PCT/CN2017/119737
Authority: WO
Inventors: 吕佩师; 王得军; 纪虎; 宋秀顺; 孙运之; 徐凯
Original assignee: 青岛海尔洗衣机有限公司
Priority date: 2016-12-30
Filing date: 2017-12-29
Publication date: 2018-07-05

Abstract

A damper, and laundry machine using same. The damper comprises: a rotating pin (5), a slider crank mechanism (2), a buffer mechanism (3), and a stroke amplification mechanism (4). The rotating pin (5) rotates about an axial direction. The buffer mechanism (3) provides a buffering force. The slider crank mechanism (2) is connected to the rotating pin (5), and converts rotation of the rotating pin (5) into a linear reciprocating motion. The stroke amplification mechanism (4) is connected to the slider crank mechanism (2) and the buffer mechanism (3), and transmits and amplifies a small stroke of the slider crank mechanism (2) to provide a large stroke of the buffer mechanism (3). By employing the stroke amplification mechanism to convert a small movement of the rotating shaft (5) into a large movement of the buffer mechanism (3), the above technical solution provides a design in which a small-angled rotation of the rotating shaft can accurately provide a sufficient damping force, thus improving product safety, and providing superior user experience.

Description

Damper and washing machine

Technical field

The present invention relates to a washing machine, and more particularly to a washing machine equipped with a damper.

Background technique

In the existing washing machine, the cover plate and the upper frame of the casing are normally hinged, so that the opening and closing of the cover plate does not have a buffering force, especially in the process of closing the cover plate, if the hand is released midway, the cover plate is gravity and inertial force. Under the action, it quickly closes and collides with the upper frame, causing noise and even causing damage. To this end, many existing patents have proposed solutions to the above problems.

The cover structure of the washing machine disclosed in the Chinese Patent Application No. CN1884672, and the manufacturing method thereof, the cover structure of the washing machine includes: a cover body; a cushioning member surrounding the peripheral portion of the cover body; surrounding the peripheral portion of the cushioning member Cover. A method of manufacturing a cover for a washing machine according to the present invention includes the following steps: a step of adhering the cushioning member to the periphery of the cover main body; a stage of placing the cover main body in which the cushioning member is in close contact with the inside of the mold; and a resin compound flowing into the mold The internal stage; the stage in which the above resin compound is solidified; the stage in which the above mold is separated. It is said that the cover structure of the washing machine and the method of manufacturing the same according to the invention as described above have an effect that the stress generated when the cover is in close contact with the cover can be absorbed by the cushioning member. However, the structure is complicated, the buffer stroke is short, the silencing and anti-collision effects are not good, and it is not easy to manufacture.

A Chinese patent of the application No. CN 200910118742.3 discloses a cover structure of a washing machine, and a toggle spring in which an applied force is switched in an opening direction or a closing direction at a predetermined angle in the opening and closing rotation operation of the cover; a cover spring that urges the cover toward the opening direction; and a rotary damper that attenuates the rotation of the cover. The damper damper is disposed inside the damper holder in a rotationally and slidable manner, the damper holder being fixed to the cover, the damper shaft of the damper damper being held in a non-rotatable manner In the top cover, a damping force is applied to the rotation of the cover when the cover is opened and closed, so that no impact occurs during opening and closing.

In the above technical solution, a buffer device composed of a buffer spring is disposed between the cover plate and the control disc seat, so that the cover plate avoids an impact when it is closed. However, due to the uncertainty of the damping force of the spring itself, the reliability of the buffer device cannot be effectively improved.

Although the existing washing machine or other upper cover has made some improvements and added dampers, the damper generally uses a damping oil damper. Due to the inherent problem of the principle, it takes a certain time for the damping oil to flow. If the user quickly opens the top cover during the use of the upper cover and then releases the hand, the damping does not work, which leads to a series of safety problems.

In view of this, the present invention has been specifically proposed.

Summary of the invention

It is an object of the present invention to provide a hinge damper that is accurate in design, simple in structure, and capable of obtaining a damping force by rotating a small angle.

Another object of the present invention is to provide a washing machine that can obtain a damping force by opening a small angle.

In order to achieve the purpose of the invention, the following technical solutions are adopted:

A damper includes: a rotating pin shaft, a crank slider mechanism, a buffer mechanism, and a stroke amplifying mechanism

Rotating the pin shaft to rotate in the axial direction;

a cushioning mechanism that provides a cushioning force;

a crank slider mechanism connected to the rotating pin shaft to convert the rotating pin shaft into a linear reciprocating motion;

The stroke amplifying mechanism is respectively connected to the crank slider mechanism and the buffer mechanism, and the small stroke motion transmission of the crank slider mechanism is enlarged to a large stroke motion of the buffer mechanism.

Further, the buffer mechanism provides a buffering force in the axial direction of the rotating pin; and the crank slider mechanism converts the buffering force in the linear direction provided by the buffer mechanism into the damping force in the rotating direction of the rotating pin shaft.

Further, the crank slider mechanism includes a crank member and a connecting rod, and the crank member is rotatably connected to one end of the rotating pin shaft, rotates integrally with the rotating pin shaft, and the crank member and the connecting rod are hinged, and the hinge portion is rotated with the rotating pin shaft Rotating, the connecting rod is connected with the stroke amplifying mechanism, and the connection between the connecting rod and the stroke amplifying mechanism is restricted to generate a reciprocating motion;

Preferably, the crank member and the hinge shaft of the connecting rod and the axis of the rotating pin are arranged in parallel with each other.

Further, the crank slider mechanism includes a connecting rod, and an end portion of the rotating pin shaft is provided with a mounting portion protruding from the outer circumference, the connecting rod is rotatably hinged with the mounting portion, and the hinge portion rotates with the rotating pin shaft, and the connecting rod Connected with the stroke amplifying mechanism, the connection between the connecting rod and the stroke amplifying mechanism is restricted to generate a reciprocating motion.

Further, one end of the connecting rod is rotatably connected to the stroke amplifying mechanism, and the other end of the connecting rod is rotatably connected to the crank member or the rotating pin shaft.

Further, the stroke amplifying mechanism comprises a lever arm, and the lever support point divides the lever arm into a short arm and a long arm, and one end of the long arm of the lever is connected with the buffer mechanism, and one end of the short arm of the lever is connected with the crank slider mechanism. The length of the short arm is smaller than the length of the long arm, and the ratio of the length of the short arm to the length of the long arm is 1:2-1:6, and preferentially, it is 1:4. That is, the ratio of the length of the short arm of the lever to the length of the long arm is the small stroke ratio of the small stroke of the crank slider mechanism 2 and the buffer mechanism. The ratio of the length of the short arm to the length of the long arm is related to the magnitude of the rotational force of the rotating pin.

Further, one end of the short arm of the lever arm is rotatably connected with the connecting rod, and the reciprocating motion of the connecting rod drives the lever arm to rotate around the pointing point; preferably, one end of the short arm of the lever arm is bent to form a folded edge, and the folded side and the connecting rod are rotatable The connection of the flange and the rotation axis of the connecting rod and the rotation axis of the lever arm support point are perpendicular to each other.

Further, the stroke amplifying mechanism further comprises a damping device for blocking the movement of the lever arm; the damping device is a torsion spring structure provided on the rotating arm of the lever and the rotating pair of the connecting rod, and/or the piston rod in the long arm of the lever and the buffer mechanism A torsion spring structure provided on the rotating pair, and/or a torsion spring structure provided on the connecting rod and the rotating member of the crank member to increase the damping force of the rotation of the rotating pin shaft.

Further, the buffer mechanism is a pneumatic/hydraulic buffer mechanism, including a pressure cylinder and a piston rod. One end of the piston rod is connected with one end of the long arm of the lever, and the other end is disposed in the pressure cylinder, and the pressure cylinder is rotatably disposed.

Further, the damper further includes a casing, the side wall of the casing is provided with a through hole, one end of the rotating pin shaft is protruded from the through hole, and the other end is disposed in the casing, and the crank slider mechanism, the buffer mechanism and the stroke amplifying mechanism are all mounted on the casing in vivo.

A washing machine of the present invention comprises a disc holder, an upper cover connected to the disc holder, and the above-mentioned damper between the upper cover and the disc holder.

With the above technical solution, the advantages of the present invention over the prior art are:

According to the present invention, the action of the rotary pin shaft in the direction of the shaft rotation is converted into a linear direction by the crank slider mechanism, and the smaller operation of the crank slider mechanism is converted into a larger action of the buffer mechanism by the stroke amplifying mechanism, thereby realizing the rotation pin shaft. Small angle rotation can accurately obtain a design with sufficient damping force to improve product safety and enhance user experience.

The washing machine of the invention converts the action of the rotation direction of the upper cover of the washing machine into a linear direction by rotating the crank slider mechanism at the end of the pin shaft, and then converts the smaller action into a larger action of the piston rod by using the lever arm, and utilizes each component The accurate ratio design allows the washing machine to open the cover at a small angle to obtain the damping force immediately, thereby improving product safety and improving the user experience.

When the upper cover is opened at a small angle, the rotating pin shaft drives one end of the connecting rod to rotate together, and the other end of the connecting rod obtains a linear reciprocating motion, and the small stroke of the movement is converted into a larger action of the piston rod by the stroke amplifying mechanism, thereby realizing The cover obtains a large damping force, and the invention has precise design and simple structure.

The invention integrates the rotating pin shaft, the crank slider mechanism, the buffer mechanism and the stroke amplifying mechanism on the casing, is convenient to install, and is suitable for popularization and use.

At the same time, the invention has simple structure, convenient installation and is suitable for popularization and use.

DRAWINGS

Figure 1 is a structural view of a washing machine in an embodiment of the present invention;

2 and FIG. 3 are structural schematic diagrams of a damper in an embodiment of the present invention;

Figure 4 is a schematic view showing the positioning of the rotating shaft of the present invention;

Figure 5 is a structural schematic view of a damper in another embodiment of the present invention.

Main components: 100—top cover, 200—control disc holder, 300—damper, 1—housing, 2—crank slider mechanism, 3—buffer mechanism, 4-stroke amplification mechanism, 5-rotation pin, 6 -reset torsion spring, 11 - first rotating shaft, 12 - second rotating shaft, 13 - blocking structure, 21 - crank member, 22 - connecting rod, 23 - second hinge shaft, 24 - third hinge shaft, 25 - First end, 26 - second end, 27 - baffle, 31 - pressure cylinder, 32 - piston rod, 33 - fixed end, 34 - movable end, 41 - lever arm, 42 - long arm, 43 - short arm, 44—first end, 45—second end, 46—folded, 51—limiter.

detailed description

The present invention will be further described in detail below with reference to the embodiments.

Example 1

As shown in FIG. 1 to FIG. 4, a damper is provided in the embodiment, including: a rotating pin 5, a crank slider mechanism 2, a buffer mechanism 3, and a stroke amplifying mechanism 4, a rotating pin 5, and an axial direction. Rotating; buffer mechanism 3, providing a buffering force; crank slider mechanism 2, connected to the rotating pin 5, the action of rotating the rotating pin 5 is converted into a linear reciprocating motion; the stroke amplifying mechanism 4, respectively, and the crank slider The mechanism 2 is coupled to the buffer mechanism 3 to amplify the small stroke motion of the crank slider mechanism 2 to the large stroke motion of the buffer mechanism 3.

In the present embodiment, the buffer mechanism 3 is provided with a buffering force in the linear direction of the rotating pin shaft 5; the crank slider mechanism 2 converts the buffering force in the linear direction provided by the buffer mechanism 3 into the damping of the rotating direction of the rotating pin shaft 5. force.

In the embodiment, the crank slider mechanism 2 includes a crank member 21 and a connecting rod 22, and the crank member 21 is rotatably connected to one end of the rotating pin shaft 5, and rotates integrally with the rotating pin shaft 5, and the crank member 21 and the connecting member The rod 22 is hinged, the hinge rotates with the rotating pin 5, the connecting rod is connected with the stroke amplifying mechanism 4, and the connection between the connecting rod 22 and the stroke amplifying mechanism 4 is restricted to reciprocate; preferably, the crank member 21 and the connecting rod 22 The axes of the hinge shaft and the rotation pin 5 are arranged in parallel with each other.

In this embodiment, the crank slider mechanism 2 includes a connecting rod, and the end portion of the rotating pin shaft 5 is provided with a mounting portion protruding from the outer circumference, and the connecting rod 22 is rotatably hinged with the mounting portion, and the hinge portion rotates The pin 5 rotates, the link 22 is connected to the stroke amplifying mechanism 4, and the link between the link 22 and the stroke amplifying mechanism 4 is restrained to reciprocate.

In the present embodiment, one end of the link 22 is rotatably coupled to the stroke amplifying mechanism 4, and the other end of the link 22 is rotatably coupled to the crank member 21 or the rotary pin 5.

In the embodiment, the stroke amplifying mechanism 4 includes a lever arm 41. The lever support point divides the lever arm 41 into a short arm 43 and a long arm 42. One end of the lever long arm 42 is connected to the buffer mechanism 3, and the end of the lever short arm 43 It is connected to the crank slider mechanism 2. The length of the short arm 43 is smaller than the length of the long arm 42, and the ratio of the length of the short arm 43 to the length of the long arm 42 is 1:2-1:6, and preferably 1:4. That is, the ratio of the length of the lever short arm 43 to the length of the long arm 42 is the small stroke ratio of the crank stroke mechanism 2 and the large stroke ratio of the buffer mechanism 3. The ratio of the length of the short arm 43 to the length of the long arm 42 is related to the magnitude of the rotational force of the rotary pin 5.

In this embodiment, one end of the short arm of the lever arm 41 is rotatably connected to the connecting rod 22, and the reciprocating motion of the connecting rod 22 drives the lever arm 41 to rotate around the pointing point. Preferably, the short arm 43 of the lever arm 41 is bent at one end to form a fold. The side 46, the flange 46 is rotatably connected to the link 22, and the flange 46 is disposed perpendicular to the rotation axis of the link 22 and the rotation axis of the support point of the lever arm 46.

In the embodiment, the buffer mechanism 3 is a hydraulic buffer mechanism 3, including a pressure cylinder 3131 and a piston rod 3232. One end of the piston rod 32 is connected with one end of the long arm of the lever, and the other end is disposed in the pressure cylinder 31. 31 can be rotated.

In this embodiment, the damper further includes a casing 1. The side wall of the casing 1 is provided with a through hole. One end of the rotating pin shaft 5 is protruded from the through hole, and the other end is disposed in the casing 1. The crank slider mechanism 2 is buffered. Both the mechanism 3 and the stroke amplification mechanism 4 are mounted in the housing.

In the embodiment of the present invention, the damper further includes a casing 1. The side wall of the casing 1 is provided with a perforation or an opening (not shown), and one end of the rotating pin 5 protrudes from the perforation or the opening. The pin shaft structure is disposed at the other end of the housing 1. The end of the housing 1 is provided with a limiting member 51. The corresponding limiting member in the housing 1 is provided with a blocking structure 13 (see FIG. 3) to prevent rotation. The pin 5 moves in the axial direction.

In this embodiment, the damping coefficient between the piston rod and the pressure cylinder can be adjusted, and the effect of the movement resistance provided by the piston rod through the crank for the upper cover during the closing process of the upper cover can be adjusted, and the adjustment is achieved. The purpose of the cover closing speed. It not only prevents the rigid impact caused by the fast closing speed, but also avoids the user's secondary application of the pressing force due to the slow closing speed. The invention has simple structure, convenient installation and is suitable for popularization and use.

Example 2

As shown in FIG. 1 and FIG. 2, a damper is described in the present embodiment, which includes an inner hollow casing 1 in which a piston rod 32, a lever arm, a connecting rod and a rotating pin 5 are mounted; a piston The rod 32 includes a pressure cylinder 31, one end of which is inserted with a piston rod 32 movable relative to the axis; the fixed end 33 of the pressure cylinder 31 is rotatably mounted on the housing 1, and the movable end 34 of the piston rod 32 Engaged with the first end 44 of the lever arm 41, the hinge is free to move in the first plane; the middle of the lever arm 41 is rotatably mounted on the housing 1 and the rotational joint is adjacent to the second end of the lever arm 41 45; the second end 45 of the lever arm 41 is hinged with the first end 25 of the connecting rod 22, the hinge is freely movable in the second plane, the first plane and the second plane are perpendicular to each other, the lever arm 41 and the joint The hinge axis of the rod 22 is perpendicular to the first plane, the hinge axis of the piston rod 32 and the lever arm 41 is perpendicular to the second plane; the second end 26 of the connecting rod 22 is passed through the eccentric rod, the eccentric wheel and the like, and the crank member 21 and the rotating pin The shaft 5 is hinged, or the second end 26 of the connecting rod 22 is directly hinged to the rotating pin 5, the shaft at the hinge The rotational axis of rotation parallel to pin 5 of intervals.

When the rotating pin 5 rotates, the second end of the driving link 22 rotates together about the rotation axis; since the lever arm 41 is fixed to the housing 1, the first end of the connecting rod 22 moves up and down with the rotation of the second end. The first end of the connecting rod 22 moves up and down together with the second end of the lever arm 41 under the driving of the hinge shaft, so that the lever arm 41 rotates around the central rotating shaft to cause the first end of the lever arm 41 to move. The first end of the lever arm 41 moves the movable end of the piston rod 32 together via the hinge shaft to cause the piston rod 32 to move relative to the pressure cylinder 31; when a relative movement occurs between the piston rod 32 and the pressure cylinder 31, Under the action of the liquid resistance inside the pressure cylinder 31, the piston rod 32 is provided with a damping force for obstructing the movement, and the purpose of slowing the rotation rate of the rotation pin 5 is achieved.

In this embodiment, the housing 1 of the damper is a square hollow chamber; the fixed end of the pressure cylinder 31 is hermetically sealed, and the upper left side of the housing 1 is provided with a first rotating shaft 11 perpendicular to the front and rear sidewalls of the housing 1. The fixed end of the pressure cylinder 31 is inserted into the first rotating shaft 11 to rotatably mount the pressure cylinder 31 to the housing 1 of the damper. The housing 1 of the damper is further provided with a second rotating shaft 12 perpendicular to the front and rear sidewalls of the housing 1. The second rotating shaft 12 is disposed adjacent to the right side wall of the damper housing 1, and the lever arm and the second rotating shaft 12 are disposed. The phase is inserted so that the lever arm 41 is rotatably mounted on the housing 1 of the damper.

In this embodiment, the axis of the piston rod 32 extends obliquely from the upper left corner of the housing 1 toward the lower right side of the housing 1, and the lever arm 41 extends obliquely from the upper right corner of the housing 1 toward the lower left corner of the housing 1, so that the piston rod 32 is extended. The movable end intersects the first end of the lever arm 41 in one place. Preferably, the piston rod 32 and the lever arm 41 are staggered in different planes. The movable end of the piston rod 32 is connected to the first end of the lever arm 41 via a first hinge shaft 35, and the axis of the first hinge shaft 35 is perpendicular to the rear side wall of the damper housing 1 so that the piston rod 32 and the lever arm 41 is relatively rotatable about the first hinge axis 35 and allows the first hinge shaft 35 to move freely.

In this embodiment, the lever arm 41 is mounted in the damper housing 1 via a lever support point. The lever support point divides the lever arm 41 into a short arm 43 and a long arm 42. One end of the lever long arm 42 is connected to the buffer mechanism 3, and the lever One end of the short arm 43 is connected to the crank slider mechanism 2. The length of the short arm 43 is smaller than the length of the long arm 42, and the ratio of the length of the short arm 43 to the length of the long arm 42 is 1:2-1:6, and preferably 1:4. That is, the ratio of the length of the lever short arm 43 to the length of the long arm 42 is the small stroke ratio of the crank stroke mechanism 2 and the large stroke ratio of the buffer mechanism 3. The ratio of the length of the short arm 43 to the length of the long arm 42 is related to the magnitude of the rotational force of the rotary pin 5.

In this embodiment, the distance between the first end of the lever arm 41 and the second rotating shaft 12 is greater than the distance between the second end of the lever arm 41 and the second rotating shaft 12, so that the lever arm 41 itself constitutes a stroke enlargement. The mechanism 4 converts the small amplitude rotational displacement generated at the rotating pin shaft 5 into a large displacement displacement of the piston rod 32, so that the action of the damper is more sensitive, and a small amplitude displacement at the rotating pin shaft 5 is avoided. When the damping fluid in the piston rod 32 has not yet generated the working condition, the working stability and reliability of the damper are improved.

In this embodiment, the second end of the lever arm 41 is provided with a flange 46 bent in the direction of the front side wall or the rear side wall, and the flange 46 is disposed in parallel with the second rotating shaft 12; the flange 46 and the connecting rod The first end of the 22 is correspondingly fitted, and the flange 46 is connected to the first end of the connecting rod 22 via the second hinge shaft 23, and the axis of the second hinge shaft 23 is perpendicular to the right side wall of the damper housing 1 to The flange 46 and the link 22 are relatively rotatable about the second hinge axis 23 and the second hinge shaft 23 is free to move.

In this embodiment, the connecting rod is adjacent to the right side wall of the damper housing 1 and parallel to the right side wall of the housing 1. The upper end of the connecting rod 22 is a first end 25 connected to the lever arm 41, and the lower end of the connecting rod 22 It is the second end 26. A rotating member is sandwiched between the second end of the connecting rod 22 and the right side wall of the damper housing 1, and the rotating pin 5 sequentially passes through the transmission member and the right side wall of the damper housing 1, the rotating pin 5 and the rotating member The phase is fixedly inserted, and the rotary pin 5 is rotatable about the axis through the right side wall of the damper housing 1.

Preferably, in the embodiment, the crank member 21 has a square structure, and the center of the square structure is inserted into the rotating pin 5, and a corner of the square structure is connected with the second end of the connecting rod via the third hinge shaft 24. So that the crank member 21 and the connecting rod 22 can rotate relative to each other around the third hinge shaft 24, and the third hinge shaft 24 can be rotated about the rotation of the rotating pin shaft 5. With the above arrangement, the third hinge shaft 24 and the rotation axis of the rotation pin 5 are on different parallel lines, so that the movement of the link 22 is caused during the rotation of the rotation pin 5.

Through the above arrangement, the connecting rod and the transmission member constitute the crank slider mechanism 2, so that the rotational movement of the rotating pin shaft 5 is changed for the linear sliding displacement of the second end of the lever arm, so that the rotational displacement of the rotating pin shaft 5 can pass through the above mechanism After the transmission, the piston rod 32 is damped and decelerated to achieve the purpose of damping adjustment of the rotating pin shaft 5.

Example 3

As shown in FIGS. 1 and 2, a damper is described in the present embodiment, which includes an inner hollow casing 1 in which a piston rod 32, a lever arm, a connecting rod and a rotating pin 5 are mounted; pressure The fixed end of the cylinder 31 is rotatably coupled to the housing 1 via the first rotating shaft 11 to form a first rotating pair; the first end of the lever arm 41 and the movable end of the piston rod 32 pass through the first rotating pin 5 a movable hinge to form a second rotating pair; a middle portion of the lever arm 41 and the housing 1 are rotatably coupled via the second rotating shaft 12 to form a third rotating pair; the second end of the lever arm 41 is connected The first end of the rod 22 is movably hinged by the second rotating pin 5 to form a fourth rotating pair; the second end of the connecting rod 22 is movably hinged with the crank member 21 to form a fifth rotating pair; the crank member 21 is fixedly connected to the rotating pin 5; the rotating pin 5 is inserted and mounted on the housing 1 so that the rotating pin 5 can rotate relative to the housing 1 about the central axis to form a sixth rotating pair.

In this embodiment, the axes of the first rotating pair, the second rotating pair and the third rotating pair are arranged in parallel, and the axes of the fourth rotating pair, the fifth rotating pair and the sixth rotating pair are arranged in parallel, and the first rotating pair The axis and the axis of the fourth rotating pair are arranged perpendicular to each other.

In this embodiment, during the rotation of the rotating pin 5, the center of rotation of the fifth rotating pair is rotated along with the rotating pin 5; and further, the center of rotation of the fourth rotating pair is generated in the vertical direction. Displacement, in order to push the lever arm to rotate around the center of rotation of the third rotating pair, and to drive the center of rotation of the second rotating pair to generate a swinging displacement; further, push the piston rod 32 to generate a telescopic displacement relative to the pressure cylinder 31, and drive the pressure cylinder 31 to generate Rotation occurs around the center of rotation of the first rotating pair.

In the above process, since the piston rod 32 generates the movement of the relative pressure cylinder 31, the hydraulic oil inside the pressure cylinder 31 exerts a damping force on the movement of the piston, causing the movement of the piston rod 32 to be hindered; and the above damping force is applied. Through the lever arm, the connecting rod, and the crank member 21, it is finally transmitted to the rotating pin shaft 5, so that the rotation of the rotating pin shaft 5 is slowed or even stopped.

Example 4

The difference between this embodiment and the above embodiments 2 and 3 is that the non-penetrating end of the rotating pin 5 is provided with a baffle 27, and the baffle 27 directly constitutes the installation of the outer periphery of the protruding rotating pin 5 for the connecting rod installation. unit. The second end of the connecting rod 22 is connected to the outer circumference of the baffle 27 via the third hinge shaft, so that the connecting rod 22 and the rotating pin shaft 5 directly constitute a fifth rotating pair, so that the third hinge shaft 24 can be along with the rotating pin shaft 5 Rotating and rotating the link about the third hinge shaft 24 relative to the rotating pin 5.

In this embodiment, the rotating pin 5 is disposed coaxially with the center of the baffle 27, and the third hinge shaft 24 is disposed at the outer periphery of the baffle 27 such that the rotating pin 5 is parallel to the axis of the third hinge shaft 24, In order to make the rotary pin shaft 5 and the link 22 directly constitute the crank slider mechanism 2, the rotational movement of the rotary pin 5 is changed to the reverse direction transmission in which the first end of the link moves up and down.

By directly connecting the rotating pin 5 to the connecting rod 22, the number of transmission parts is reduced, and the production cost is reduced. Similarly, the damper can still achieve the purpose of the variable direction transmission of the rotating pin 5.

Example 5

The difference between this embodiment and the above-mentioned Embodiments 2 to 4 is that the damper mechanism 3 of the damper is not constituted by the piston rod 32, and the damper mechanism 3 of the damper is composed of any of the existing pressure-damping members, such as a gas pressure rod and a damping spring. Composition.

Example 6

As shown in FIG. 5, in order to increase the buffering force of the buffer mechanism 5 on the movement process of the lever arm 41, the damping force of the crank member 21 to rotate the rotation pin 5 is increased, and the stroke amplifying mechanism further includes the movement of the lever arm. a damping device; the damping device is: a reset torsion spring 6 provided on the rotating arm of the lever short arm 43 and the connecting rod 22, and/or a resetting twist on the rotating arm of the lever arm 32 and the buffer mechanism 32 in the buffer mechanism A spring 6 (not shown in the drawings), and/or a rotating torsion spring 6 (not shown in the drawings) is provided on the rotating portion of the connecting rod 22 and the crank member 21 to increase the damping effect of the rotation of the rotating pin shaft. Force and increase the speed of the damping reaction.

Example 7

In this embodiment, a washing machine is introduced, which comprises: a control disc holder 200, and an upper cover 100 connected to the control disc holder 200. The upper cover can be turned outward relative to the control disc holder. The damper according to any one of the above embodiments 100 to 5 is disposed between the upper cover 100 and the control tray base 200.

In this embodiment, the damper is mounted on the control disc holder, and the end of the rotating pin 5 of the damper is disposed through the damper housing 1 , and the through end of the rotating pin 5 is inserted into the upper cover 100 . The through end of the rotating pin 5 has a non-circular cross section, and the rotating pin 5 is connected to the upper cover so as to rotate the rotating pin 5 together with the upper cover.

In this embodiment, when the upper cover of the washing machine is closed in the open state, the upper cover is turned downward about the axis of the rotating pin 5, and the rotating pin 5 rotates downward together with the upper cover, during the downward rotation of the rotating pin 5, The crank member 21 is driven to rotate downward, so that the crank member 21 moves downward together with the connecting rod; the connecting portion of the connecting rod and the lever arm is pulled downward to generate a downward displacement, and the lever rotates around the shaft, and the lever is connected with the piston rod 32. Being pushed upward, the piston rod 32 moves to the inside of the pressure cylinder 31, and the pressure cylinder 31 generates a damping limit force for the inward movement of the piston rod 32, thereby limiting the slowing down of the movement speed of the piston rod 32, so that the closing rate of the upper cover of the washing machine becomes slow.

In this embodiment, the damper may be mounted on the upper cover 100, and the end of the rotating pin 5 of the damper is disposed through the damper housing 1, and the through end of the rotating pin 5 is opposite to the control disc housing 200. Plug connection.

At the same time, due to the high displacement damping precision of the damper in the present application, the upper cover of the washing machine can still provide an effective buffering force when the opening of the upper cover is small, thereby effectively preventing the upper cover from opening less and the damper malfunctioning, resulting in failure. The closing rate is too fast, and even the damage of the top cover of the washing machine occurs.

The embodiments of the present invention may be further combined or substituted, and the embodiments are merely described for the preferred embodiments of the present invention, and are not intended to limit the scope and scope of the present invention. Various changes and modifications made by those skilled in the art to the technical solutions of the present invention are within the scope of the present invention.

Claims

A damper, comprising: a rotating pin shaft, a crank slider mechanism, a buffer mechanism and a stroke amplifying mechanism,

Rotating the pin shaft to rotate in the axial direction;

a cushioning mechanism that provides a cushioning force;

a crank slider mechanism connected to the rotating pin shaft to convert the rotating pin shaft into a linear reciprocating motion;

The stroke amplifying mechanism is respectively connected to the crank slider mechanism and the buffer mechanism, and the small stroke motion transmission of the crank slider mechanism is enlarged to a large stroke motion of the buffer mechanism.
A damper according to claim 1 wherein:

a cushioning mechanism that provides a cushioning force to the axial direction of the rotating pin;

The crank slider mechanism converts the buffering force in the linear direction provided by the buffer mechanism into the damping force in the rotating direction of the rotating pin shaft.
A damper according to claim 2, wherein said crank slider mechanism comprises a crank member and a connecting rod, and the crank member is rotatably coupled to one end of the rotating pin shaft and rotates integrally with the rotating pin shaft. The crank member and the connecting rod are hinged, the hinge portion rotates with the rotating pin shaft, the connecting rod is connected with the stroke amplifying mechanism, and the connecting portion of the connecting rod and the stroke amplifying mechanism is restricted to generate a reciprocating motion;

Preferably, the crank member and the hinge shaft of the connecting rod and the axis of the rotating pin are arranged in parallel with each other.
A hinge damper according to claim 2, wherein said crank slider mechanism comprises a connecting rod, and an end portion of the rotating pin shaft is provided with a mounting portion protruding from the outer circumference, and the connecting rod and the mounting portion are The rotating phase is hinged, the hinge rotates with the rotating pin shaft, the connecting rod is connected with the stroke amplifying mechanism, and the connection between the connecting rod and the stroke amplifying mechanism is restricted to generate a reciprocating motion.
A damper according to claim 4, wherein one end of said connecting rod is rotatably connected to the stroke amplifying mechanism, and the other end of the connecting rod is rotatably connected to the crank member or the rotating pin shaft. .
A damper according to any one of claims 1 to 5, wherein said stroke amplifying mechanism comprises a lever arm, and the lever support point divides the lever arm into a short arm and a long arm, and the end of the lever long arm and the buffer The mechanism is connected, and one end of the short arm of the lever is connected with the crank slider mechanism.
A damper according to claim 6, wherein one end of the short arm of the lever arm is rotatably connected to the link, and the reciprocating movement of the link drives the lever arm to rotate around the finger; preferably, the short arm of the lever arm One end is bent to form a folded edge, and the folded edge is connected to the link that is rotatable, and the folded edge is perpendicular to the rotation axis of the connecting rod and the rotation axis of the support point of the lever arm;

Preferably, the stroke amplifying mechanism further comprises a damping device for hindering movement of the lever arm; the damping device is a torsion spring structure provided on the rotating arm of the lever short arm and the connecting rod, and/or a piston in the long arm of the lever and the buffer mechanism A torsion spring structure provided on the rotating pair of the rod, and/or a torsion spring structure provided on the rotating pair of the connecting rod and the crank member to increase the damping force of the rotation of the rotating pin shaft.
A damper according to any one of claims 1 to 7, wherein said buffer mechanism is a pneumatic/hydraulic shock absorbing mechanism comprising a pressure cylinder and a piston rod, and one end of the piston rod is connected to one end of the long arm of the lever. The other end is set in the pressure cylinder, and the pressure cylinder can be rotated.
A damper according to any one of claims 1 to 8, further comprising a casing, the side wall of the casing is provided with a through hole, one end of the rotating pin protrudes from the through hole, and the other end is disposed in the casing. The crank slider mechanism, the buffer mechanism and the stroke amplification mechanism are all mounted in the housing.
A washing machine comprising a disc holder and an upper cover connected to the disc holder, characterized in that the damper according to any one of claims 1-9 is provided between the upper cover and the disc holder.