Buffer strip opening-assisting damper

Abstract

The utility model relates to a buffer strip opening-assisting damper which solves the problems that when an existing washing machine cover is closed, a cover plate directly falls down, noise is large, and hands are prone to being injured by smashing. Comprising a fixed shell, a rotating shaft and a damping mechanism, the damping mechanism comprises a sliding block, a spring and a flexible damping ring, a first spiral structure is arranged on the sliding block, and a second spiral structure is arranged at one end of the rotating shaft. When the door is closed, the door plate drives the rotating shaft to rotate, the second spiral structure on the rotating shaft drives the sliding block to slide in the axial direction to compress the spring, the damping ring rubs with the inner wall of the cavity, the door plate slowly closes the door under the action of damping force and cannot be rapidly smashed down, and therefore the hand cannot be injured. When a door is opened, the door plate drives the rotating shaft to rotate, the spring rebounds, the spring pushes the first spiral structure to move in the axial direction, the first spiral structure drives the second spiral structure to rotate, accordingly, the rotating shaft is driven to rotate to provide assistance for door opening, and in the door opening and closing process, the damping ring on the sliding block makes friction contact with the inner wall of the cavity, so that mechanical noise caused by collision is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical parts field, a buffer zone helps to open damper. BACKGROUND

[0002] The current conventional washing machine cover plate when closing, will produce sharp noise, medium and large washing machine cover plate is heavy, it is laborious to lift, when opening the cover plate and putting the article, the cover plate will directly fall, leading to finger injury. UTILITY MODEL CONTENTS

[0003] The utility model discloses a purpose at solving the problem that the cover plate directly falls and the noise is big and is easy to injure hand when the cover of existing washing machine closes.

[0004] The utility model discloses a buffer zone helps to open damper including fixed shell, with the pivot of door plate installation, the shell with pivot between through damping mechanism rotation connection, the shell is equipped with the cavity, the damping mechanism is located in the cavity, the damping mechanism includes slider, spring and flexible damping ring, first screw structure is equipped on the slider, the flexible damping ring is located on the outer wall of slider, the damping ring and the inner wall of cavity abut, one end of spring and the bottom of cavity abut, the other end and slider abut, one end of pivot is equipped with the second screw structure of driving slider and compressing spring along the axial sliding, the second screw structure and first screw structure sliding fit arrangement.

[0005] The utility model discloses a further defined technical scheme includes:

[0006] The inner wall of the cavity is provided with an axial slider limiting groove, and the slider is provided with a slider limiting block matched with the slider limiting groove.

[0007] One end of the cavity is provided with a circular opening, the pivot is provided with a circular positioning step matched with the circular opening, and the pivot is further provided with a pivot limiting table matched with the inner side wall of the circular opening.

[0008] The cavity is composed of a barrel-shaped cavity body and a cavity cover, the circular opening is located on the cavity cover, and the cavity cover is fixedly connected with the cavity body.

[0009] The flexible damping ring is made of polyurethane material, and the slider is provided with a damping ring positioning hole matched with the flexible damping ring.

[0010] The outer periphery of the fixed shell is provided with a shell positioning table.

[0011] The pivot is provided with a pivot mounting positioning table.

[0012] The utility model discloses beneficial effect is: the utility model discloses the buffer zone help open damper when closing, the door plate drives the rotation of pivot, and the second spiral structure on pivot drive sliding block compresses spring along the axial sliding, and the friction of damping ring and cavity inner wall, and the door plate slowly closes under the action of damping force, will not rapidly hit down, thereby will not hit the hand. When opening, the door plate drives the rotation of pivot, and spring rebounds, and spring promotes the first spiral structure and moves along the axial, and the first spiral structure drives the rotation of second spiral structure, thereby drives the rotation of pivot and provides the help for opening, thereby the very laborsaving door, and in the process of opening and closing, the friction contact of damping ring on sliding block and cavity inner wall thereby will not occur mechanical noise because of the collision. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the three -dimensional structure schematic diagram of a buffer zone help open damper of the utility model.

[0014] Fig. 2 It is the cut structure schematic diagram of a buffer zone help open damper of the utility model.

[0015] Fig. 3 It is the explosion structure schematic diagram of a buffer zone help open damper of the utility model. DETAILED DESCRIPTION

[0016] The structure of the utility model is further explained below in connection with the drawings.

[0017] REFERENCE Figs. 1 to 3The application discloses a buffer strip assisted opening damper which comprises a fixed shell 1, a rotating shaft 2 installed with a door plate, a damping mechanism 3 connected between the shell and the rotating shaft, a cavity 11 arranged in the shell 1, and the damping mechanism arranged in the cavity. The damping mechanism 3 comprises a sliding block 31, a spring 32 and a flexible damping ring 33. The sliding block 31 is provided with a first screw structure 311. The flexible damping ring is arranged on the outer circumferential wall of the sliding block and abuts against the inner wall of the cavity. One end of the spring abuts against the bottom of the cavity, and the other end of the spring abuts against the sliding block. The sliding block is a circle center. One end of the spring is arranged at the bottom of the cavity, and the other end of the spring abuts against the end surface of the sliding block. One end of the rotating shaft 2 is provided with a second screw structure 21 for driving the sliding block to slide along the axial direction and compress the spring. The second screw structure is arranged in sliding fit with the first screw structure. In the embodiment, one end of the cavity 11 is provided with a circular opening 12, the rotating shaft 2 is provided with a circular positioning step 22 matched with the circular opening, and the rotating shaft 2 is further provided with a rotating shaft limiting step 23 matched with the inner side wall of the circular opening. The circular positioning step is matched with the limiting step to position the rotating shaft. The cavity 11 is composed of a barrel-shaped cavity main body 111 and a cavity cover 112. The circular opening is arranged on the cavity cover, and the cavity cover is fixedly connected with the cavity main body. The cavity cover and the cavity main body can be fixedly connected through welding. In the embodiment, the flexible damping ring 33 is made of polyurethane material, and the sliding block 31 is provided with a damping ring positioning hole 312 matched with the flexible damping ring. The flexible damping ring is sleeved in the damping ring positioning hole. In specific implementation, the flexible damping ring can also be other damping rings such as a rubber damping ring or other soft rubber damping ring. In the process of rotating and sliding of the sliding block, the flexible damping ring is in contact with the inside of the cavity, so that mechanical noise caused by collision is prevented.

[0018] In the embodiment, the inner wall of the cavity 11 is provided with an axial sliding block limiting groove 13, and the sliding block 31 is provided with a sliding block limiting block 313 matched with the sliding block limiting groove. The axial sliding block limiting groove enables the sliding block to move along the axial direction and prevents the sliding block from rotating.

[0019] In the embodiment, the outer circumferences of the fixed shell 1 are provided with shell positioning steps 14. The shell positioning steps facilitate clamping positioning of the fixed shell and prevent the fixed shell from rotating during work.

[0020] In the embodiment, the rotating shaft 2 is provided with a rotating shaft mounting positioning step 24. The rotating shaft mounting positioning step facilitates clamping positioning of the rotating shaft and the door plate and prevents the door plate from rotating relative to the rotating shaft during work.

[0021] The utility model discloses a buffer zone helps to open damper to close the door, and the door plate drives the pivot to rotate, and the second spiral structure on the pivot rotates and drives the first spiral structure to rotate, and the second spiral structure and the first spiral structure rotate and separate, and the first spiral structure drives the sliding block to compress the spring along the axial sliding, and the damping ring and the cavity inner wall rub, and the door plate slowly closes the door under the action of damping force, and will not rapidly hit down, thereby will not hit the hand. When opening the door, the door plate drives the pivot to rotate, and the spring rebounds, and the spring pushes the first spiral structure to move along the axial, and the first spiral structure drives the second spiral structure to rotate, and the second spiral structure and the first spiral structure rotate and close, and the second spiral structure drives the pivot to rotate and provides the help for opening the door, thereby very laborsavingly opens the door, and in addition, the damping ring on the sliding block and the cavity inner wall rub and contact in the process of opening and closing the door, thereby will not generate mechanical noise because of the collision.

[0022] Although the specific embodiments of the utility model have been described in detail with reference to the drawings, it should not be understood as limiting the protection scope of the utility model. Various modifications and changes made by those skilled in the art within the scope described in the claims still belong to the protection scope of the utility model.

Claims

1. A buffer-type opening damper, the damper comprising a fixed housing and a rotating shaft mounted to a door panel, wherein the housing and the rotating shaft are rotatably connected by a damping mechanism, characterized in that: The shell is internally provided with a cavity, the damping mechanism is located in the cavity, the damping mechanism comprises a sliding block, a spring and a flexible damping ring, the sliding block is provided with a first screw structure, the flexible damping ring is located on the outer circumferential wall of the sliding block, the damping ring is in abutment with the inner wall of the cavity, one end of the spring is in abutment with the bottom of the cavity, and the other end is in abutment with the sliding block, one end of the rotating shaft is provided with a second screw structure for driving the sliding block to slide along the axial direction to compress the spring, and the second screw structure is in sliding fit with the first screw structure.

2. A cushioning zone assisted opening damper as in claim 1, wherein: The inner wall of the cavity is provided with an axial sliding block limiting groove, and the sliding block is provided with a sliding block limiting block matched with the sliding block limiting groove.

3. A cushioning zone assisted opening damper as in claim 1, wherein: One end of the cavity is provided with a circular opening, the rotating shaft is provided with a circular positioning step matched with the circular opening, and the rotating shaft is further provided with a rotating shaft limiting table matched with the inner side wall of the circular opening.

4. A cushion band assisted opening damper as in claim 3, wherein: The cavity is composed of a barrel-shaped cavity body and a cavity cover, the circular opening is located on the cavity cover, and the cavity cover is fixedly connected with the cavity body.

5. A cushioning zone assisted opening damper as in claim 1, wherein: The flexible damping ring is made of polyurethane material, and the sliding block is provided with a damping ring positioning hole matched with the flexible damping ring.

6. A cushioning zone assisted opening damper as in claim 1, wherein: The outer circumferences of the fixed shell are provided with shell positioning tables.

7. A cushioning zone assisted opening damper as in claim 1, wherein: The rotating shaft is provided with a rotating shaft mounting positioning table.

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