CN115822407A - Wear-proof door opening device - Google Patents

Abstract

An abrasion-proof door opening device comprises a support, a movable arm assembly and an abrasion-proof part, wherein the movable arm assembly is hinged to open and close the support; the movable arm assembly comprises a movable arm hinged to the bracket for opening and closing and an acting piece arranged at one end of the movable arm, and the acting piece is contacted with the wear-resistant piece when the movable arm is hinged to the bracket for opening and closing; the acting piece is fixedly arranged on the movable arm, and the acting piece and the movable arm are made of different materials; the acting piece is in rolling or sliding contact with the wear-resistant piece and is made of plastic; the support sets up on the cabinet body, and wearing parts sets up on the door body. According to the furniture door, the wear-resistant part is arranged on the door body of the furniture, the movable arm assembly acts on the wear-resistant part when the movable arm assembly is hinged on the support to be opened and closed, so that the door body is prevented from being scratched due to direct contact of the movable arm assembly and the door body, and the movable arm assembly is in rolling or sliding contact with the wear-resistant part through the acting part made of plastic, so that the movable arm assembly can rotate more smoothly when the movable arm assembly is hinged to be opened and closed.

Description

Wear-proof door opening device

Technical Field

The invention relates to the technical field of furniture, in particular to an anti-abrasion door opening device.

Background

Chinese patent publication No. CN113463998A, 10/1/2021, discloses a pressing automatic opening and closing reset structure for furniture, which comprises a pressing reset device and a sliding device; the pressing reset device comprises a bracket, and a pressing component, a pushing component, an opening and closing component and a connecting arm are arranged on the bracket; the connecting arm is provided with a transmission component and is in transmission connection with the pushing component and the opening and closing component through the transmission component; a reset component is arranged between the pushing component and the opening and closing component and is reset and matched through the reset component; the sliding device comprises a fixing piece; the automatic articulated switching of cooperation push type through pressing the subassembly, advancing subassembly, switching subassembly, reset assembly is passed through to linking arm one end on the support, is provided with dismouting sliding assembly between the other end and the mounting, and the linking arm passes through dismouting sliding assembly and is connected with the mounting dismouting to slide on the mounting through dismouting sliding assembly when automatic articulated switching. When the connecting arm is hinged to open and close, the sliding piece slides on the sliding groove part of the fixing piece through the connecting piece, but the connecting piece may contact with the furniture door body when the sliding piece slides, so that the furniture door body is scratched.

Therefore, further improvements are needed.

Disclosure of Invention

The invention aims to provide an abrasion-proof door opening device which is simple in structure, convenient to operate and high in practicability and can avoid scratching a door body so as to overcome the defects in the prior art.

According to the door opener of this purpose design's abrasionproof decreases, including support and digging arm subassembly, the articulated switching of digging arm subassembly is on the support, its characterized in that: still include the wearing parts, the articulated switching of movable arm subassembly is used in on the wearing parts.

The movable arm assembly comprises a movable arm hinged to the support for opening and closing and an acting piece arranged at one end of the movable arm, and when the movable arm is hinged to open and close, the acting piece is in contact with the wear-resistant piece.

The acting piece is fixedly arranged on the movable arm, and the acting piece and the movable arm are made of different materials.

The acting element is in rolling or sliding contact with the wear element and is made of plastic.

The support sets up on the cabinet body, and wearing parts sets up on the door body.

The wear-resistant part is arranged on the door body through clamping, sticking or fastening pieces.

The surface of the wear-resistant part is positioned on the same plane with the inner side surface of the door body; alternatively, the wear-resistant member is provided convexly or concavely on the inner side surface of the door body.

The acting piece corresponds to the setting position of the wear-resistant piece, and the acting piece moves on the wear-resistant piece when the movable arm assembly is hinged to open and close.

The support is provided with a pressing assembly, a locking assembly and a sliding block assembly which are elastically movable, a transmission arm is arranged between the locking assembly and/or the sliding block assembly and the pressing assembly, the transmission assembly is arranged between one end of the sliding block assembly and one end of the movable arm assembly, an unlocking guide part is arranged between the locking assembly and the sliding block assembly, and an opening and closing guide part is arranged between the movable arm assembly and the transmission assembly;

when the door opening device is started, the pressing component acts on the locking component through pressing the driving arm so as to unlock the locking component and the sliding block component mutually, and further to enable the sliding block component to move towards the direction of the driving arm; when the movable arm component is opened to a corresponding angle, the sliding block component is partially elastically reset, the locking component is elastically reset and is locked with the sliding block component, the pressing component is elastically reset and acts on the transmission arm so as to reset the transmission arm, and the movable arm component is separated from the opening and closing guide part of the transmission component in the continuous elastic rotation process;

when the movable arm assembly is closed, the transmission assembly is driven to act on the other part of the sliding block assembly through the opening and closing guide part, when the movable arm assembly is closed to a corresponding angle, the elastic acting forces of the movable arm assembly and the sliding block assembly, which act on the transmission assembly, are basically balanced, so that the movable arm assembly generates a hovering effect, and the movable arm assembly continues to be closed under the action of external force.

The transmission arm is provided with a first action end, a second action end and a third action end;

when the pressing assembly moves elastically, the transmission arm is driven to move through the first action end, and the third action end acts on the locking and separating assembly, so that the locking and separating assembly and the sliding block assembly are unlocked; or the pressing component drives the transmission arm to reset through the first action end when elastically moving;

when the locking is separated from the unlocking of the assembly and the sliding block assembly, the sliding block assembly moves elastically and drives the transmission arm to move through the second action end, and the transmission arm acts on the pressing assembly through the first action end, so that the pressing assembly stretches out elastically.

A first elastic piece is arranged between the locking and separating assembly and the support, the locking and separating assembly is elastically movable on the support through the first elastic piece and is unlocked or locked with the sliding block assembly through the unlocking guide part during elastic movement; and the pressing component elastically moves on the bracket through the second elastic piece and acts on the transmission arm during elastic movement.

A third elastic part is arranged between the movable arm component and the bracket, and the movable arm component elastically moves on the bracket through the third elastic part; be provided with the fourth elastic component between slider assembly and the support, slider assembly passes through fourth elastic component elastic activity on the support, and when the movable arm subassembly was opened to corresponding angle, fourth elastic component elasticity acted on slider assembly to make slider assembly elasticity reset.

The support is provided with linear limiting guide parts corresponding to the locking and separating assembly, the sliding block assembly and the pressing assembly respectively, and the locking and separating assembly, the sliding block assembly and the pressing assembly are linearly limited and move on the support through the linear limiting guide parts respectively.

The invention has the following beneficial effects:

1. through set up wearing parts on the door body at furniture, the movable arm subassembly is used in wearing parts when articulated switching on the support, avoids the movable arm subassembly and the door body direct contact and the fish tail door body like this, and the movable arm subassembly rolls or sliding contact through the effect spare of making by plastics and wearing parts for it is more smooth and easy to rotate when the articulated switching of movable arm subassembly, and then makes opening and closing of the door body more smooth and easy.

2. The movable arm assembly does not need to be installed with a door body of furniture, and only the support needs to be fixed on the cabinet body of the furniture, so that the installation and the disassembly of the door opening device can be simplified, and the assembly efficiency of the door opening device is improved.

3. After the door opener presses the pressing component, the movable arm component can be automatically and completely opened, so that a user can open the movable arm component by the simplest and most convenient operation, and the user experience is improved.

4. When the movable arm component is opened to a corresponding angle, the pressing component, the lock separation component, the sliding block component and the transmission arm can reset automatically, and the movable arm component can be opened automatically when the pressing component is pressed next time.

5. When the movable arm component is closed to a corresponding angle, the movable arm component and the sliding block component are respectively basically balanced to the elastic acting force of the transmission component, the movable arm component can generate a hovering effect (the movable arm component can hover at any angle position when being continuously closed), the movable arm component can be continuously closed by using very small force at the moment, when the door opening device is applied to furniture, a hinge with larger elasticity can be installed between a furniture cabinet body and a door body, when the movable arm component generates the hovering effect, the automatic closing of the movable arm component (namely the door body) can be realized through the hinge, the user does not need to push the door body at the moment, the door closing operation of the user is simplified, and the user experience is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of furniture according to an embodiment of the present invention.

Fig. 2 is an exploded view of a furniture according to an embodiment of the present invention.

Fig. 3-7 are schematic views illustrating an opening operation process of the door opener according to an embodiment of the present invention.

Fig. 8-10 are schematic views illustrating a closing operation process of the door opener according to an embodiment of the present invention.

Fig. 11 is a cross-sectional view of a door opener in accordance with an embodiment of the present invention.

Fig. 12 is a schematic view of an internal structure of a door opener according to an embodiment of the present invention.

Fig. 13 is a schematic view of the overall structure of the door opener according to an embodiment of the present invention.

Fig. 14 is an exploded view of a door opener according to an embodiment of the present invention.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 1-14, the wear-resistant door opener comprises a support 1, a movable arm assembly 2 and a wear-resistant part c, wherein the movable arm assembly 2 is hinged to open and close the support 1, and the wear-resistant part c acts on the movable arm assembly 2 when the movable arm assembly is hinged to open and close the wear-resistant part c.

The movable arm assembly 2 comprises a movable arm 12 hinged to the bracket 1 for opening and closing and an acting piece 20 arranged at one end of the movable arm 12, wherein when the movable arm 12 is hinged to open and close, the acting piece 20 is contacted with the wear-resistant piece c.

The acting element 20 is fixedly arranged on the movable arm 12, and the acting element 20 and the movable arm 12 are made of different materials, in this embodiment, the movable arm 12 is made of a metal material.

The acting element 20 is in rolling or sliding contact with the wear-resistant element c, and the acting element 20 is made of plastic; in this embodiment, the acting element 20 is a roller rotatably arranged on the movable arm 12, the roller being in rolling contact with the wear part c.

The bracket 1 is arranged on a cabinet body a of furniture, and the wear-resistant part c is arranged on a door body b.

The wear-resistant part c is arranged on the door body b through clamping, sticking or fastening; specifically, wearing parts c can be connected with door body b through the buckle, or paste on door body b through pasting glue or glue, or fix on door body b through the screw again, and this embodiment is preferred to be pasted on door body b through pasting the sticky.

The surface of the wear-resistant part c and the inner side surface of the door body b are on the same plane; alternatively, the wear-resistant member c is provided convexly or concavely on the inner side surface of the door body b. The door body b can set up a recess that is used for installing wearing parts c, and wearing parts c installs in the recess for wearing parts c surface and door body b medial surface are on the coplanar or wearing parts c are sunken to be set up on door body b medial surface, and door body b also can not set up the recess, and wearing parts c direct mount is on door body b, makes wearing parts c protrusion set up on door body b medial surface, and the preferred door body b of this embodiment does not set up the recess.

The acting piece 20 corresponds to the setting position of the wear-resistant piece c, the acting piece 20 moves on the wear-resistant piece c when the movable arm assembly 2 is hinged for opening and closing, namely, the acting piece 20 rolls on the wear-resistant piece c, and the acting piece 20 acts on the door body b through the acting piece 20 when rolling, so that the door body b is opened or closed when the movable arm assembly 2 is hinged for opening and closing.

The support 1 is provided with a pressing component 3, a locking component 5 and a sliding block component 6 which have elastic activities, a transmission arm 4 is arranged between the locking component 5 and/or the sliding block component 6 and the pressing component 3, a transmission component 7 is arranged between the sliding block component 6 and one end of the movable arm component 2, an unlocking guide part is arranged between the locking component 5 and the sliding block component 6, and an opening and closing guide part is arranged between the movable arm component 2 and the transmission component 7;

when the door opening device is started, the pressing component 3 acts on the locking component 5 through pressing the driving arm 4 so as to enable the locking component 5 and the sliding block component 6 to be unlocked mutually, and further enable part of the sliding block component 6 to move towards the driving arm 4, the sliding block component 6 drives the pressing component 3 to elastically extend out of the support 1 through the driving arm 4, and the movable arm component 2 elastically rotates along the opening and closing guide part and extends out of the support 1; when the movable arm assembly 2 is opened to a corresponding angle, the sliding block assembly 6 is partially elastically reset, the lock-out assembly 5 is elastically reset and locked with the sliding block assembly 6, the pressing assembly 3 is elastically reset and acts on the transmission arm 4 to reset the transmission arm 4, and the movable arm assembly 2 is separated from the opening and closing guide part of the transmission assembly 7 in the continuous elastic rotation process;

when the movable arm assembly 2 is closed, the opening and closing guide part drives the transmission assembly 7 to act on the other part of the sliding block assembly 6, when the movable arm assembly 2 is closed to a corresponding angle, the movable arm assembly 2 and the sliding block assembly 6 respectively act on the elastic acting force of the transmission assembly 7 and are basically balanced, so that the movable arm assembly 2 generates a hovering effect, and the movable arm assembly 2 is continuously closed under the action of external force.

This door opener uses on furniture, door body b articulates on cabinet body a through the hinge c that has great elasticity, door body b is when closing, press door body b, and then press down subassembly 3 through the door body, realize opening of door body b, door body b opens the back, with the hand promotion door body b, door body b begins to close, digging arm 12 also closes simultaneously, when digging arm 12 closes to corresponding angle, digging arm subassembly 2, slider assembly 6 is balanced basically to the elastic force of drive assembly 7 respectively, loosen door body b this moment, under hinge c's spring action, door body b can self-closing, digging arm 12 closes simultaneously.

Through setting up gyro wheel 20, when the articulated switching of digging arm 2 was on support 1, gyro wheel 20 and door body b rolling contact realized opening or closing of door body b for digging arm 2 need not install with door body b, can simplify the installation of door opener and dismantle.

A first elastic piece 10 is arranged between the locking and separating assembly 5 and the support 1, the locking and separating assembly 5 elastically moves on the support 1 through the first elastic piece 10, and is unlocked or locked with the sliding block assembly 6 through the unlocking guide part during elastic movement; and a second elastic member 18 between the pressing member 3 and the bracket 1, wherein the pressing member 3 elastically moves on the bracket 1 through the second elastic member 18 and acts on the transmission arm 4 during elastic movement.

The locking and separating assembly 5 at least comprises a locking and separating piece 8, the sliding block assembly 6 at least comprises a sliding block 9, and the unlocking guide part is arranged between the locking and separating piece 8 and the sliding block 9;

the locking and separating piece 8 is elastically movable on the bracket 1 and is unlocked or locked with the sliding block 9 through the unlocking guide part during elastic movement.

The unlocking guide part comprises a locking part 8.1 arranged on the locking part 8 and a guide matching part 9.1 arranged on the sliding block 9, the first elastic part 10 is a spring, and the second elastic part 18 is a spring;

the locking and separating part 8 is elastically movable on the bracket 1 through a first elastic part 10, so that the locking and separating part 8.1 is locked with or separated from the guide matching part 9.1; specifically, the locking and unlocking part 8.1 is a limiting block arranged at the side part of the locking and unlocking part 8, the guiding and matching part 9.1 is a limiting shaft arranged on the sliding block 9, when the door opening device is not started, the guiding and matching part 9.1 and the locking and unlocking part 8.1 are mutually limited and locked, when the pressing component 3 is pressed, the pressing component 3 drives the transmission arm 4 to swing, so that the transmission arm 4 pushes the locking and unlocking part 8 downwards (in the direction of an arrow in fig. 5), and further the guiding and matching part 9.1 and the locking and unlocking part 8.1 are mutually separated, and at the moment, under the elastic force of the fifth elastic part 14, the sliding block 9 moves towards the transmission arm 4 and drives the transmission arm 4 to swing; when the movable arm assembly 2 is opened to a corresponding angle, the fourth elastic element 15 drives the slider 9 to elastically reset (i.e. the slider 9 moves in the direction opposite to the direction of the transmission arm 4), so that the pressing assembly 3 elastically resets, and drives the transmission arm 4 to swing, so that the transmission arm 4 resets, and meanwhile, the first elastic element 10 pushes the lock separation element 8 upwards (in the direction of the arrow in fig. 5), so that the guide matching part 9.1 and the lock separation part 8.1 are locked in a mutual limiting manner.

The pressing assembly 3 at least comprises a pressing piece 11, the pressing piece 11 elastically moves on the support 1 through a second elastic piece 18 and acts on the transmission arm 4 during elastic movement, and after the pressing piece 11 extends out of the support 1, when the sliding block 9 elastically resets, the second elastic piece 18 elastically acts on the pressing piece 11 to enable the pressing piece 11 to elastically reset.

The transmission arm 4 is provided with a first action end 4.1, a second action end 4.2 and a third action end 4.3;

when the pressing piece 11 moves elastically (presses), the transmission arm 4 is driven to move through the first action end 4.1, and the third action end 4.3 acts on the locking and separating piece 8 to push the locking and separating piece 8 downwards so as to unlock (separate from) the locking and separating piece 8 and the sliding block 9; or, when the pressing member 11 elastically moves, the driving arm 4 is driven to reset through the first acting end 4.1, that is, after the pressing member 11 extends out of the bracket 1, when the pressing member 11 elastically resets through the second elastic member 18, the pressing member 11 drives the driving arm 4 to reset through the first acting end 4.1.

When the lock leaves 8 and 9 unblocks of slider, 9 elastic activity of slider (to 4 direction movements of drive arm) and through the activity of second effect end 4.2 drive arm 4, and drive arm 4 acts on pressing member 11 through first effect end 4.1, and then makes pressing member 11 elasticity stretch out outside support 1. When the sliding block 9 moves towards the direction of the transmission arm 4, the first acting end 4.1 of the transmission arm 4 is separated from the locking and separating part 8, and at the moment, the locking and separating part 8.1 of the locking and separating part 8 is in limit action on the guide matching part 9.1 of the sliding block 9, so that the locking and separating part 8 cannot move upwards.

A third elastic part 13 is arranged between the movable arm component 2 and the support 1, the movable arm component 2 elastically moves on the support 1 through the third elastic part 13, the third elastic part 13 is a torsion spring, one end of the torsion spring elastically acts on an acting part 1.1 of the support 1, the other end of the torsion spring elastically acts on the movable arm 12, the movable arm 12 elastically moves on the support 1 through the third elastic part 13, the sliding block component 6 further comprises a fifth elastic part 14 and a transmission matching part 17, the sliding block 9 is elastically connected with the transmission matching part 17 through the fifth elastic part 14, the fifth elastic part 14 is a spring, and the transmission matching part 17 is matched with the transmission component 7;

when the locking and separating piece 8 and the sliding block 9 are unlocked, the fifth elastic piece 14 elastically acts on the sliding block 9 to enable the sliding block 9 to move towards the transmission arm 4, so that the elastic acting force of the movable arm component 2 on the transmission component 7 is larger than the elastic acting force of the sliding block component 6 on the transmission component 7, and the movable arm 12 elastically extends out of the support 1 through the elastic action of the third elastic piece 13; specifically, when the door opener is not started, that is, when the pressing assembly 3 is not pressed, the fifth elastic element 14 is in a compressed state, the elastic force of the fifth elastic element 14 acts on the transmission assembly 7 through the transmission matching part 17, and further acts on the movable arm 12, and the elastic force of the fifth elastic element 14 is substantially the same as (balanced with) the elastic force of the third elastic element 13, so that the movable arm 12 cannot rotate; when the pressing component 3 presses, the slider 9 moves towards the transmission arm 4, so that the elastic force of the fifth elastic element 14 is released (the fifth elastic element 14 is in an elongated state), at this time, the elastic force of the fifth elastic element 14 is smaller than the elastic force of the third elastic element 13, and the movable arm 12 automatically opens under the elastic force of the third elastic element 13 and is opened to the maximum position.

A fourth elastic part 15 is arranged between the sliding block assembly 6 and the bracket 1, the sliding block assembly 6 is elastically moved on the bracket 1 through the fourth elastic part 15, and the fourth elastic part 15 is a tension spring; when the movable arm assembly 2 is opened to a corresponding angle, the fourth elastic element 15 elastically acts on the sliding block 9, so that the sliding block 9 elastically resets, and the transmission matching element 17 is driven to move by the fifth elastic element 14 when the sliding block 9 elastically resets.

A connecting rod 19 is arranged on the sliding block 9, the sliding block 9 is movably connected with the transmission matching part 17 through the connecting rod 19, the fifth elastic part 14 is sleeved on the connecting rod 19, one end of the fifth elastic part 14 elastically acts on the sliding block 9, and the other end of the fifth elastic part 14 elastically acts on the transmission matching part 17; one end of the connecting rod 19 is provided with a limiting part 19.1, the transmission fitting part 17 is provided with a limiting fitting part 17.2, and the sliding block 9 drives the connecting rod 19 to move when moving towards the direction of the transmission arm 4 and is limited on the limiting fitting part 17.2 through the limiting part 19.1.

The transmission component 7 at least comprises a swinging block 16, the swinging block 16 is hinged on the bracket 1, the opening and closing guide part is arranged between the movable arm 12 and the swinging block 16, and the swinging block 16 is matched with the transmission matching part 17;

when the movable arm 12 is closed, the swing block 16 is driven to swing through the opening and closing guide portion, when the swing block 16 swings, the swing block acts on the transmission matching part 17, so that the transmission matching part 17 moves towards the direction of the slider 9 and acts on the slider 9 through the fifth elastic part 14, at this time, the slider 9 does not move (because the lock-off part 8 and the slider 9 are in a mutually locked state), when the transmission matching part 17 moves, the fifth elastic part 14 is compressed, when the movable arm 12 is closed to a corresponding angle, the elastic acting forces of the movable arm assembly 2 and the slider assembly 6 respectively acting on the transmission assembly 7 are basically balanced, namely the elastic force of the fifth elastic part 14 is basically balanced (same) with the elastic force of the third elastic part 13, the elastic force of the fifth elastic part 14 acts on the swing block 16 through the transmission matching part 17, and further, the swing block 16 acts on the movable arm 12 through the opening and closing guide portion, so that the movable arm 12 generates a hovering effect.

The opening and closing guide part comprises a guide part 12.1 arranged on the movable arm 12 and a curve guide matching part 16.1 arranged on the swinging block 16, and the guide part 12.1 is a rotating wheel rotatably arranged on the movable arm 12;

when the movable arm component 2 is opened, the sliding block 9 is elastically reset and drives the transmission matching part 17 to move, and the transmission matching part 17 drives the swinging block 16 to swing and act on the movable arm 12, so that the movable arm 12 is opened by rotating along the curve guide matching part 16.1 through the guide part 12.1; referring to fig. 6-8, the curve guide engagement portion 16.1 is provided with an action point 16.2, when the movable arm 12 is opened to a corresponding angle, the guide portion 12.1 is separated from the curve guide engagement portion 16.1 along the action point 16.2, so that the movable arm 12 is separated from the swing block 16 (transmission assembly 7), and then the movable arm 12 is in a state of being separated from the swing block 16 when the movable arm 12 is continuously opened;

when the movable arm assembly 2 is closed to a corresponding angle, the guide part 12.1 of the movable arm 12 acts on the curve guide matching part 16.1 along the action point 16.2 under the action of external force to make the swinging block 16 swing, referring to fig. 8-10 and fig. 3 (fig. 3 is a schematic view of the movable arm assembly 2 being completely closed), when the movable arm assembly 2 starts to be closed, the guide part 12.1 does not act on the curve guide matching part 16.1, referring to fig. 10, when the movable arm assembly 2 is closed to the corresponding angle, the guide part 12.1 is in contact with the action point 16.2, and then when the movable arm assembly 2 continues to be closed, the guide part 12.1 acts on the curve guide matching part 16.1 until the movable arm assembly 2 is completely closed;

the guide portion 12.1 and the curved guide engagement portion 16.1 guide the rotation of the movable arm 12 during the opening or closing of the movable arm 12.

The support 1 is provided with linear limiting guide parts corresponding to the locking and separating piece 8, the sliding block 9 and the pressing piece 11 respectively, and the locking and separating piece 8, the sliding block 9 and the pressing piece 11 are in linear limiting movement on the support 1 through the linear limiting guide parts respectively.

The working process of the door opening device is as follows:

and (3) opening process:

referring to fig. 3 to 8, the pressing member 11 is pressed, the pressing member 11 drives the transmission arm 4 to push the locking and unlocking member 8 downwards, the locking and unlocking member 8 and the slider 9 are unlocked from each other, the slider 9 moves towards the direction of the transmission arm 4 under the elastic force of the fifth elastic member 14, the movable arm 2 is opened under the elastic force of the third elastic member 13, meanwhile, the slider 9 drives the transmission arm 4 to push the pressing member 11 downwards, so that the pressing member 11 extends out of the bracket 1, when the movable arm 12 is opened to a corresponding angle, the slider 9 is reset under the elastic force of the fourth elastic member 15 and drives the transmission matching member 17 to move, the transmission matching member 17 drives the swing block 16 to act on the movable arm 12, so that the movable arm 12 continues to be opened along the opening and closing guide portion under the elastic force of the third elastic member 13, and when the movable arm 12 continues to be opened to the corresponding angle, the movable arm 12 is separated from the swing block 16, and then the movable arm 12 continues to be opened to the maximum position; when the sliding block 9 is reset, the pressing piece 11 is reset under the elastic action of the second elastic piece 18, the driving arm 4 is driven to reset when the pressing piece 11 is reset, meanwhile, the locking piece 8 is reset under the elastic action of the first elastic piece 10, and the locking piece 8 is locked with the sliding block 9 after being reset.

And (3) closing process:

referring to fig. 8-10 and 3, the movable arm 12 starts to close under the action of an external force, and when the movable arm 12 is closed to a corresponding angle, the movable arm 12 drives the swing block 16 to swing through the opening and closing guide portion, and then the swing block 16 drives the transmission mating member 17 to move towards the slider 9, so as to compress the fifth elastic member 14, when the movable arm 12 is closed to the corresponding angle, the elastic acting forces of the movable arm assembly 2 and the slider assembly 6 on the swing block 16 are substantially balanced, and the movable arm 12 continues to be closed to the maximum position under the action of the external force.

The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the invention are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and the invention is intended to be protected by the following claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (13)

1. The utility model provides a wear-proof door opener, includes support (1) and digging arm subassembly (2), and the articulated switching of digging arm subassembly (2) is on support (1), its characterized in that: the movable arm component (2) is hinged to open and close and acts on the wear-resistant part (c).

2. The wear resistant door opener of claim 1, wherein: the movable arm assembly (2) comprises a movable arm (12) hinged to the support (1) for opening and closing and an acting piece (20) arranged at one end of the movable arm (12), and when the movable arm (12) is hinged to open and close, the acting piece (20) is in contact with the wear-resistant piece (c).

3. The wear resistant door opener of claim 2, wherein: the acting piece (20) is fixedly arranged on the movable arm (12), and the acting piece (20) and the movable arm (12) are made of different materials.

4. The wear resistant door opener of claim 2, wherein: the acting element (20) is in rolling or sliding contact with the wear resistant element (c), and the acting element (20) is made of plastic.

5. The wear resistant door opener of claim 1, wherein: the bracket (1) is arranged on the cabinet body (a), and the wear-resistant piece (c) is arranged on the door body (b).

6. The wear resistant door opener of claim 5, wherein: the wear-resistant part (c) is arranged on the door body (b) through clamping, pasting or fastening pieces.

7. The wear resistant door opener of claim 5, wherein: the surface of the wear-resistant part (c) and the inner side surface of the door body (b) are on the same plane; or the wear-resistant piece (c) is convexly or concavely arranged on the inner side surface of the door body (b).

8. The wear resistant door opener of claim 2, wherein: the acting piece (20) corresponds to the arrangement position of the wear-resistant piece (c), and the acting piece (20) moves on the wear-resistant piece (c) when the movable arm assembly (2) is hinged to open and close.

9. The wear resistant door opener of claim 1, wherein: the support (1) is provided with a pressing component (3) which can move elastically, a locking separation component (5) and a sliding block component (6), a transmission arm (4) is arranged between the locking separation component (5) and/or the sliding block component (6) and the pressing component (3), a transmission component (7) is arranged between the sliding block component (6) and one end of the movable arm component (2), an unlocking guide part is arranged between the locking separation component (5) and the sliding block component (6), and an opening and closing guide part is arranged between the movable arm component (2) and the transmission component (7);

when the door opening device is started, the pressing component (3) acts on the lock separation component (5) through pressing the driving arm (4) to enable the lock separation component (5) and the sliding block component (6) to be unlocked mutually, and then the sliding block component (6) partially moves towards the driving arm (4), the sliding block component (6) drives the pressing component (3) to elastically extend out of the support (1) through the driving arm (4), and the movable arm component (2) elastically rotates along the opening and closing guide part and extends out of the support (1) simultaneously; when the movable arm assembly (2) is opened to a corresponding angle, part of the sliding block assembly (6) is elastically reset, the locking-separating assembly (5) is elastically reset and locked with the sliding block assembly (6), the pressing assembly (3) is elastically reset and acts on the transmission arm (4) to reset the transmission arm (4), and the movable arm assembly (2) is separated from the opening and closing guide part of the transmission assembly (7) in the continuous elastic rotation process;

when movable arm subassembly (2) were closed, through switching guide drive transmission assembly (7) be used in slider subassembly (6) another part, when movable arm subassembly (2) were closed to corresponding angle, movable arm subassembly (2), slider subassembly (6) were used in the elastic force of transmission assembly (7) respectively and are balanced basically to make movable arm subassembly (2) produce the effect of hovering, and movable arm subassembly (2) continue to close under the exogenic action.

10. The wear resistant door opener of claim 9, wherein: the transmission arm (4) is provided with a first action end (4.1), a second action end (4.2) and a third action end (4.3);

when the pressing component (3) moves elastically, the transmission arm (4) is driven to move through the first action end (4.1), and the third action end (4.3) acts on the locking component (5), so that the locking component (5) and the sliding block component (6) are unlocked; or the pressing component (3) drives the transmission arm (4) to reset through the first action end (4.1) when moving elastically;

when the lock is unlocked from the component (5) and the sliding block component (6), the sliding block component (6) moves elastically and drives the transmission arm (4) to move through the second action end (4.2), and the transmission arm (4) acts on the pressing component (3) through the first action end (4.1), so that the pressing component (3) can stretch out elastically.

11. The wear resistant door opener of claim 9, wherein: a first elastic piece (10) is arranged between the locking and separating assembly (5) and the bracket (1), the locking and separating assembly (5) elastically moves on the bracket (1) through the first elastic piece (10), and is unlocked or locked with the sliding block assembly (6) through the unlocking guide part during elastic movement; and the second elastic piece (18) is arranged between the pressing component (3) and the bracket (1), and the pressing component (3) elastically moves on the bracket (1) through the second elastic piece (18) and acts on the transmission arm (4) during elastic movement.

12. The wear resistant door opener of claim 9, wherein: a third elastic part (13) is arranged between the movable arm component (2) and the bracket (1), and the movable arm component (2) elastically moves on the bracket (1) through the third elastic part (13); be provided with fourth elastic component (15) between slider subassembly (6) and support (1), slider subassembly (6) are through fourth elastic component (15) elastic activity on support (1), and when digging arm subassembly (2) opened corresponding angle, fourth elastic component (15) elasticity was used in slider subassembly (6) to make slider subassembly (6) elasticity reset.

13. The wear resistant door opener of claim 9, wherein: the linear limiting guide parts are arranged on the support (1) corresponding to the locking-away component (5), the sliding block component (6) and the pressing component (3) respectively, and the locking-away component (5), the sliding block component (6) and the pressing component (3) are in linear limiting movement on the support (1) through the linear limiting guide parts respectively.

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