An opener

Abstract

An opener, comprising a bracket, on which an elastically movable movable arm assembly, a pressing assembly, a locking and separating assembly and a moving assembly are arranged. The movable arm assembly is hinged to open and close on the bracket. A swing arm is arranged between the locking and separating assembly and / or the moving assembly and the pressing assembly. A transmission assembly is arranged between one ends of the moving assembly and the movable arm assembly. An unlocking guiding portion is arranged between the locking and separating assembly and the moving assembly. An opening and closing guiding portion is arranged between the movable arm assembly and the transmission assembly. After the pressing assembly of the opener of the present invention is pressed, the movable arm assembly can be automatically opened, ensuring that the user can complete the opening of the movable arm assembly with the simplest and most convenient operation. When the movable arm assembly is opened to a corresponding angle, the pressing assembly, the locking and separating assembly, the moving assembly and the swing arm will automatically reset, ensuring that the movable arm assembly can be automatically opened when the pressing assembly is pressed next time. When the movable arm assembly is closed to a corresponding angle, a hovering effect is generated, and at this time, the movable arm assembly can be continuously closed with a very small force.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture, in particular to a door opener. Background Art

[0002] Chinese patent document No. CN113914731A disclosed on October 13, 2021 an automatic reset type push-to-open and close device, including a bracket, a connecting arm, and a pressing assembly, a pushing assembly, and an opening and closing assembly that are independently elastic and movable; the connecting arm is hinged to open and close on the bracket, and a pushing transmission part and an opening and closing transmission part are respectively hinged on it, and are respectively connected to the pushing assembly and the opening and closing assembly through the pushing transmission part and the opening and closing transmission part; a reset assembly is provided between the pushing assembly and the opening and closing assembly, and the two are reset and matched through the reset assembly when the connecting arm is hinged to open or close; an arc-shaped matching part is provided between the pressing assembly and the pushing assembly, and the two are locked or unlocked with each other in an arc form through the arc-shaped matching part; the above product structure can realize the push-to-open of furniture, and each component can automatically reset when the furniture is opened or closed, but the product structure is complicated, and the furniture still needs to be opened manually when opened. The connecting arm has no hovering effect when the furniture is closed. In addition, the product is inconvenient to disassemble and assemble.

[0003] Therefore, further improvements are necessary. Summary of the Invention

[0004] The purpose of the present invention is to provide a door opener with simple structure, easy operation, good user experience and strong practicality, so as to overcome the shortcomings of the prior art.

[0005] A door opener designed for this purpose includes a bracket, characterized in that: a resiliently movable arm assembly, a pressing assembly, a locking assembly, and a moving assembly are provided on the bracket; the movable arm assembly is hingedly connected to the bracket for opening and closing; a swing arm is provided between the locking assembly and / or the moving assembly and the pressing assembly; a transmission assembly is provided between one end of the moving assembly and the movable arm assembly; an unlocking guide portion is provided between the locking assembly and the moving assembly; and an opening and closing guide portion is provided between the movable arm assembly and the transmission assembly;

[0006] When the pressing assembly is pressed, the locking assembly is unlocked through the swing arm, the unlocking guide and the moving assembly. The moving assembly partially moves toward the swing arm and acts on the pressing assembly through the swing arm, so that the pressing assembly elastically extends, and the movable arm assembly and the pressing assembly elastically extend out of the bracket at the same time.

[0007] When the movable arm assembly is opened to a corresponding angle, the moving assembly partially resets elastically, the locking assembly resets elastically and locks with the moving assembly, the pressing assembly resets elastically and acts on the swing arm to reset the swing arm, and the movable arm assembly disengages from the transmission assembly during the continued opening process;

[0008] When the movable arm assembly is closed, it drives the transmission assembly through the opening and closing guiding part to act on the elastic moving assembly. When the movable arm assembly is closed to a corresponding angle, the elastic acting forces of the movable arm assembly and the moving assembly on the transmission assembly are basically balanced, so as to make the movable arm assembly produce a hovering effect, and the movable arm assembly continues to close under the action of an external force.

[0009] The locking and releasing assembly at least includes a locking and releasing part, the moving assembly at least includes a moving part, and the unlocking guiding part is arranged between the locking and releasing part and the moving part;

[0010] The locking and releasing part elastically moves on the bracket, and unlocks or locks with the moving part through the unlocking guiding part during elastic movement.

[0011] The unlocking guiding part includes a locking and releasing part arranged on the locking and releasing part and a guiding and cooperating part arranged on the moving part, and the locking and releasing assembly further includes a first elastic part arranged between the locking and releasing part and the bracket;

[0012] The locking and releasing part elastically moves on the bracket through the first elastic part, so that the locking and releasing part is locked with or disengaged from the guiding and cooperating part.

[0013] The pressing assembly includes a pressing part and a second elastic part arranged between the pressing part and the bracket. The pressing part elastically moves on the bracket through the second elastic part and acts on the swing arm during elastic movement.

[0014] The swing arm is hinged on the bracket and includes a first acting end, a second acting end and a third acting end;

[0015] When the pressing part elastically moves, it drives the swing arm to move through the first acting end, and the third acting end acts on the locking and releasing part, so as to unlock the locking and releasing part from the moving part; or, when the pressing part elastically moves, it drives the swing arm to reset through the first acting end;

[0016] When the locking and releasing part is unlocked from the moving part, the moving part elastically moves and drives the swing arm to move through the second acting end, and the swing arm acts on the pressing part through the first acting end, so as to elastically extend the pressing part.

[0017] The movable arm assembly includes a movable arm and a third elastic part arranged between the movable arm and the bracket. The movable arm elastically moves on the bracket through the third elastic part. The moving assembly further includes a fourth elastic part and a transmission and cooperating part. The moving part is elastically connected with the transmission and cooperating part through the fourth elastic part, and the transmission and cooperating part cooperates with the transmission assembly;

[0018] When the locking and releasing part is unlocked from the moving part, the fourth elastic part elastically acts on the moving part, so that the moving part moves towards the swing arm direction, and then the elastic acting force of the movable arm assembly on the transmission assembly is greater than the elastic acting force of the moving assembly on the transmission assembly, and then the movable arm elastically extends outside the bracket under the action of the elastic force of the third elastic part.

[0019] The moving component further includes a fifth elastic member disposed between the moving member and the bracket, and the moving member is elastically movable on the bracket through the fifth elastic member; when the movable arm assembly is opened to a corresponding angle, the fifth elastic member elastically acts on the moving member to enable the moving member to be elastically reset.

[0020] The transmission component at least includes a swing block, and an opening and closing guiding portion is disposed between the movable arm and the swing block, and the swing block cooperates with a transmission mating member;

[0021] When the movable arm is closed, the swing block is driven to swing through the opening and closing guiding portion, and when the swing block swings, it acts on the transmission mating member, so that the transmission mating member moves in the direction of the moving member and acts on the moving member through the fourth elastic member.

[0022] The opening and closing guiding portion includes a guiding portion disposed on the movable arm and a curve guiding and mating portion disposed on the swing block;

[0023] When the movable arm assembly is opened, the transmission mating member drives the swing block to act on the movable arm, so that the movable arm rotates and opens along the curve guiding and mating portion through the guiding portion; a acting point is provided on the curve guiding and mating portion, and when the movable arm is opened to a corresponding angle, the guiding portion disengages from the curve guiding and mating portion along the acting point;

[0024] When the movable arm assembly is closed to a corresponding angle, the guiding portion of the movable arm acts on the curve guiding and mating portion along the acting point under an external force, so that the swing block swings.

[0025] Linear limiting and guiding portions are respectively provided on the bracket corresponding to the locking and separating member, the moving member and the pressing member, and the locking and separating member, the moving member and the pressing member are respectively linearly limited and movable on the bracket through the linear limiting and guiding portions.

[0026] The present invention has the following beneficial effects:

[0027] 1. After the pressing component is pressed by the door opener, the movable arm assembly can be automatically and completely opened, ensuring that the user can complete the opening of the movable arm assembly with the simplest and most convenient operation, thereby improving the user experience.

[0028] 2. When the movable arm assembly is opened to a corresponding angle, the pressing component, the locking and separating component, the moving component and the swing arm will automatically reset, ensuring that the movable arm assembly can be automatically opened when the pressing component is pressed next time.

[0029] 3. When the movable arm assembly is closed to a corresponding angle, the elastic acting forces of the movable arm assembly and the moving assembly on the transmission assembly are basically balanced, enabling the movable arm assembly to produce a hovering effect (the movable arm assembly can hover at any angular position when it continues to close). At this time, a very small force can be used to continue closing the movable arm assembly. When the door opener is applied to furniture, a hinge with a relatively large elastic force can be installed between the furniture cabinet body and the door body. When the movable arm assembly produces a hovering effect, the automatic closing of the movable arm assembly (i.e., the door body) can be achieved through the hinge. At this time, the user does not need to push the door body, simplifying the user's door-closing operation and improving the user experience.

[0030] 4. When the door opener is applied to furniture, the movable arm assembly does not need to be installed on the furniture door body. It only needs to fix the bracket on the furniture cabinet body, which can simplify the installation and disassembly of the door opener and improve the assembly efficiency of the door opener.

[0031] 5. Setting the movable arm assembly, the pressing assembly, the locking and separating assembly, the moving assembly, the swing arm and the transmission assembly on the bracket can simplify the overall structure of the door opener, reduce the number of components, improve the connection compactness between components, reduce the volume of the door opener, and lower the production cost. Brief Description of the Drawings

[0032] Figures 1 - 5 It is a schematic diagram of the opening action process of the door opener in an embodiment of the present invention.

[0033] Figures 6 - 8 It is a schematic diagram of the closing action process of the door opener in an embodiment of the present invention.

[0034] Figure 9 It is a cross-sectional view of the door opener in an embodiment of the present invention.

[0035] Figure 10 It is a schematic diagram of the internal structure of the door opener in an embodiment of the present invention.

[0036] Figure 11 It is a schematic diagram of the overall structure of the door opener in an embodiment of the present invention.

[0037] Figure 12 It is an exploded structure schematic diagram of the door opener in an embodiment of the present invention.

[0038] Figure 13 It is a schematic diagram of the overall structure of the furniture in an embodiment of the present invention. Detailed Description of the Embodiment

[0039] The present invention will be further described below in conjunction with the drawings and embodiments.

[0040] See Figures 1 - 13, this door opener includes a bracket 1, on which an elastic movable arm assembly 2, a pressing assembly 3, a locking and separating assembly 5 and a moving assembly 6 are provided. The arm assembly 2 is hinged to open and close on the bracket 1. A swing arm 4 is provided between the locking and separating assembly 5 and / or the moving assembly 6 and the pressing assembly 3. A transmission assembly 7 is provided between one ends of the moving assembly 6 and the arm assembly 2. An unlocking guide portion is provided between the locking and separating assembly 5 and the moving assembly 6. An opening and closing guide portion is provided between the arm assembly 2 and the transmission assembly 7;

[0041] When the pressing assembly 3 is pressed, the locking and separating assembly 5 is unlocked from the moving assembly 6 through the swing arm 4 and the unlocking guide portion. A part of the moving assembly 6 moves towards the swing arm 4 and acts on the pressing assembly 3 through the swing arm 4, so that the pressing assembly 3 elastically extends out of the bracket 1, and the arm assembly 2 and the pressing assembly 3 elastically extend out of the bracket 1 at the same time;

[0042] When the arm assembly 2 is opened to a corresponding angle, a part of the moving assembly 6 elastically resets, the locking and separating assembly 5 elastically resets and locks with the moving assembly 6, the pressing assembly 3 elastically resets and acts on the swing arm 4, so that the swing arm 4 resets, and the arm assembly 2 disengages from the transmission assembly 7 during the continuous opening process;

[0043] When the arm assembly 2 is closed, it drives the transmission assembly 7 to act on the elastic moving assembly 6 through the opening and closing guide portion. When the arm assembly 2 is closed to a corresponding angle, the elastic acting forces of the arm assembly 2 and the moving assembly 6 on the transmission assembly 7 are basically balanced, so that the arm assembly 2 produces a hovering effect, and the arm assembly 2 continues to close under the action of an external force.

[0044] The locking and separating assembly 5 at least includes a locking and separating member 8, the moving assembly 6 at least includes a moving member 9, and the unlocking guide portion is provided between the locking and separating member 8 and the moving member 9;

[0045] The locking and separating member 8 is elastically movable on the bracket 1, and is unlocked or locked with the moving member 9 through the unlocking guide portion during elastic movement.

[0046] The unlocking guide portion includes a locking and separating portion 8.1 provided on the locking and separating member 8 and a guiding and cooperating portion 9.1 provided on the moving member 9. The locking and separating assembly 5 further includes a first elastic member 10 provided between the locking and separating member 8 and the bracket 1. The first elastic member 10 is a spring;

[0047] The locking and separating member 8 is elastically movable on the bracket 1 through the first elastic member 10, so that the locking and separating portion 8.1 is locked or disengaged from the guiding and cooperating portion 9.1; specifically, the locking and separating portion 8.1 is a limiting block provided on the side of the locking and separating member 8, and the guiding and cooperating portion 9.1 is a limiting shaft provided on the moving member 9. When the door opener is not activated, the guiding and cooperating portion 9.1 and the locking and separating portion 8.1 are mutually limited and locked. When the pressing assembly 3 is pressed, the pressing assembly 3 drives the swing arm 4 to swing, so that the swing arm 4 pushes the locking and separating member 8 downward ( Figure 3the direction of the arrow), thereby causing the guiding cooperation part 9.1 and the locking and separating part 8.1 to be disengaged from each other. At this time, under the elastic force of the fourth elastic member 14, the moving member 9 moves towards the swing arm 4 and drives the swing arm 4 to swing; when the movable arm assembly 2 is opened to a corresponding angle, the fifth elastic member 15 drives the moving member 9 to elastically reset (i.e., the moving member 9 moves in the opposite direction to the direction of the swing arm 4), so that the pressing assembly 3 elastically resets and drives the swing arm 4 to swing, causing the swing arm 4 to reset. At the same time, the first elastic member 10 pushes the locking and separating member 8 upwards ( Figure 3 the direction of the arrow), thereby causing the guiding cooperation part 9.1 and the locking and separating part 8.1 to be mutually limited and locked.

[0048] The pressing assembly 3 includes a pressing member 11 and a second elastic member 18 disposed between the pressing member 11 and the bracket 1. The second elastic member 18 is a spring. The pressing member 11 is elastically movable on the bracket 1 through the second elastic member 18 and acts on the swing arm 4 during elastic movement. After the pressing member 11 extends out of the bracket 1, when the moving member 9 elastically resets, the second elastic member 18 elastically acts on the pressing member 11 to make the pressing member 11 elastically reset.

[0049] The swing arm 4 is hinged to the bracket 1 and includes a first acting end 4.1, a second acting end 4.2, and a third acting end 4.3;

[0050] When the pressing member 11 elastically moves (presses), it drives the swing arm 4 to move through the first acting end 4.1, and the third acting end 4.3 acts on the locking and separating member 8 to push the locking and separating member 8 downwards, thereby unlocking (separating from each other) the locking and separating member 8 and the moving member 9; or, when the pressing member 11 elastically moves, it drives the swing arm 4 to reset through the first acting end 4.1, that is, after the pressing member 11 extends out of the bracket 1 and elastically resets through the second elastic member 18, the pressing member 11 drives the swing arm 4 to reset through the first acting end 4.1.

[0051] When the locking and separating member 8 and the moving member 9 are unlocked, the moving member 9 elastically moves (moves towards the swing arm 4) and drives the swing arm 4 to move through the second acting end 4.2, and the swing arm 4 acts on the pressing member 11 through the first acting end 4.1, thereby causing the pressing member 11 to elastically extend out of the bracket 1. When the moving member 9 moves towards the swing arm 4, the first acting end 4.1 of the swing arm 4 disengages from the locking and separating member 8. At this time, the limiting action of the locking and separating part 8.1 of the locking and separating member 8 on the guiding cooperation part 9.1 of the moving member 9 makes the locking and separating member 8 unable to move upwards.

[0052] The movable arm assembly 2 includes a movable arm 12 and a third elastic member 13 disposed between the movable arm 12 and the bracket 1. The third elastic member 13 is a torsion spring. One end of the torsion spring elastically acts on the acting portion 1.1 of the bracket 1, and the other end of the torsion spring elastically acts on the movable arm 12. The movable arm 12 elastically moves on the bracket 1 through the third elastic member 13. The moving assembly 6 further includes a fourth elastic member 14 and a transmission fitting 17. The moving member 9 is elastically connected to the transmission fitting 17 through the fourth elastic member 14. The fourth elastic member 14 is a spring, and the transmission fitting 17 cooperates with the transmission assembly 7;

[0053] When the locking and separating member 8 is unlocked from the moving member 9, the fourth elastic member 14 elastically acts on the moving member 9, so that the moving member 9 moves toward the swing arm 4, and further enables the elastic acting force of the movable arm assembly 2 on the transmission assembly 7 to be greater than the elastic acting force of the moving assembly 6 on the transmission assembly 7. Further, through the elastic force of the third elastic member 13, the movable arm 12 elastically extends outside the bracket 1. Specifically, when the door opener is not activated, that is, when the pressing assembly 3 is not pressed, at this time, the fourth elastic member 14 is in a compressed state, and the elastic force of the fourth elastic member 14 acts on the transmission assembly 7 through the transmission fitting 17, and then acts on the movable arm 12. At this time, the elastic force of the fourth elastic member 14 is basically the same (balanced) as the elastic force of the third elastic member 13, so that the movable arm 12 does not rotate; when the pressing assembly 3 is pressed, the moving member 9 moves toward the swing arm 4, so that the elastic force of the fourth elastic member 14 is released (the fourth elastic member 14 is in a stretched state). At this time, the elastic force of the fourth elastic member 14 is less than the elastic force of the third elastic member 13, and the movable arm 12 automatically opens under the elastic force of the third elastic member 13 and remains open until the maximum position.

[0054] The moving assembly 6 further includes a fifth elastic member 15 disposed between the moving member 9 and the bracket 1. The moving member 9 elastically moves on the bracket 1 through the fifth elastic member 15. The fifth elastic member 15 is a tension spring; when the movable arm assembly 2 is opened to a corresponding angle, the fifth elastic member 15 elastically acts on the moving member 9 to enable the moving member 9 to elastically reset. When the moving member 9 elastically resets, it drives the transmission fitting 17 to move through the fourth elastic member 14.

[0055] A connecting rod 19 is disposed on the moving member 9. The moving member 9 is movably connected to the transmission fitting 17 through the connecting rod 19. The fourth elastic member 14 is sleeved on the connecting rod 19, and one end of the fourth elastic member 14 elastically acts on the moving member 9, and the other end of the fourth elastic member 14 elastically acts on the transmission fitting 17; a limiting portion 19.1 is disposed at one end of the connecting rod 19, and a limiting cooperation portion 17.2 is disposed on the transmission fitting 17. When the moving member 9 moves toward the swing arm 4, it drives the connecting rod 19 to move and is limited on the limiting cooperation portion 17.2 through the limiting portion 19.1.

[0056] The transmission assembly 7 includes at least a swing block 16. The swing block 16 is hinged to the bracket 1. The opening and closing guiding part is arranged between the movable arm 12 and the swing block 16, and the swing block 16 cooperates with the transmission fitting 17;

[0057] When the movable arm 12 is closed, it drives the swing block 16 to swing through the opening and closing guiding part. When the swing block 16 swings, it acts on the transmission fitting 17, so that the transmission fitting 17 moves in the direction of the moving part 9 and acts on the moving part 9 through the fourth elastic part 14. At this time, the moving part 9 does not move (because the locking part 8 and the moving part 9 are in a locked state with each other). When the transmission fitting 17 moves, the fourth 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 moving assembly 6 acting on the transmission assembly 7 are basically balanced, that is, the elastic force of the fourth elastic part 14 is basically balanced (the same) with the elastic force of the third elastic part 13. The elastic force of the fourth elastic part 14 acts on the swing block 16 through the transmission fitting 17, and then the swing block 16 acts on the movable arm 12 through the opening and closing guiding part, so that the movable arm 12 produces a hovering effect.

[0058] The opening and closing guiding part includes a guiding part 12.1 arranged on the movable arm 12 and a curve guiding and cooperating part 16.1 arranged on the swing block 16. The guiding part 12.1 is a runner rotatably arranged on the movable arm 12;

[0059] When the movable arm assembly 2 is opened, the moving part 9 is elastically reset and drives the transmission fitting 17 to move. The transmission fitting 17 drives the swing block 16 to swing and acts on the movable arm 12, so that the movable arm 12 rotates and opens along the curve guiding and cooperating part 16.1 through the guiding part 12.1; See Figures 4 - 6 There is an acting point 16.2 on the curve guiding and cooperating part 16.1. When the movable arm 12 is opened to a corresponding angle, the guiding part 12.1 disengages from the curve guiding and cooperating part 16.1 along the acting point 16.2, so that the movable arm 12 disengages from the swing block 16 (transmission assembly 7). After that, when the movable arm 12 continues to open, the movable arm 12 is in a state of disengaging from the swing block 16;

[0060] When the movable arm assembly 2 is closed to a corresponding angle, the guiding part 12.1 of the movable arm 12 acts on the curve guiding and cooperating part 16.1 along the acting point 16.2 under the action of an external force, so that the swing block 16 swings. See Figures 6 - 8 、 Figure 1 ( Figure 1 is a schematic diagram of the complete closing of the movable arm assembly 2), when the movable arm assembly 2 starts to close, the guiding part 12.1 does not act on the curve guiding and cooperating part 16.1. See Figure 8When the movable arm assembly 2 is closed to a corresponding angle, the guiding portion 12.1 contacts the acting point 16.2 at this time. Then, when the movable arm assembly 2 continues to close, the guiding portion 12.1 acts on the curved guiding mating portion 16.1 until the movable arm assembly 2 is completely closed;

[0061] During the opening or closing process of the movable arm 12, the guiding portion 12.1 and the curved guiding mating portion 16.1 guide the rotation of the movable arm 12.

[0062] Linear limiting guiding portions are respectively provided on the bracket 1 corresponding to the locking and separating member 8, the moving member 9, and the pressing member 11. The locking and separating member 8, the moving member 9, and the pressing member 11 are respectively linearly limited and move on the bracket 1 through the linear limiting guiding portions.

[0063] This door opener is applied to furniture. The furniture includes a cabinet body A and a door body B. The door body B is hinged to the cabinet body A through a hinge C with a large elastic force. The bracket 1 is fixed on the cabinet body A. A roller 20 made of plastic is rotatably provided at one end of the movable arm 12. When the movable arm 12 is hinged and opened or closed on the bracket 1, the roller 20 moves on the door body B, thereby realizing the opening or closing of the door body B; when the door body B is closed, pressing the door body B, and then through the door body pressing the pressing assembly 3, the opening of the door body B is realized. After the door body B is opened, pushing the door body B by hand, the door body B starts to close, and the movable arm 12 also closes at the same time. When the movable arm 12 is closed to a corresponding angle, the elastic acting forces of the movable arm assembly 2 and the moving assembly 6 on the transmission assembly 7 are basically balanced. At this time, releasing the door body B, under the elastic force of the hinge C, the door body B will automatically close, and the movable arm 12 closes at the same time.

[0064] By providing the roller 20, when the movable arm 2 is hinged and opened or closed on the bracket 1, the roller 20 is in rolling contact with the door body B, realizing the opening or closing of the door body B, so that the movable arm 2 does not need to be installed on the door body B, and the installation and disassembly of the door opener can be simplified.

[0065] The working process of the door opener:

[0066] Opening process:

[0067] See Figures 1 - 6, press the pressing member 11, the pressing member 11 drives the swing arm 4 to push the locking and separating member 8 downward, the locking and separating member 8 and the moving member 9 are unlocked from each other, the moving member 9 moves toward the swing arm 4 under the elastic force of the fourth elastic member 14, the movable arm 2 is opened under the elastic force of the third elastic member 13, and at the same time the moving member 9 drives the swing arm 4 to push the pressing member 11 downward, so that the pressing member 11 extends out of the bracket 1. When the movable arm 12 is opened to a corresponding angle, the moving member 9 is reset under the elastic force of the fifth elastic member 15 and drives the transmission and cooperation member 17 to move. The transmission and cooperation member 17 drives the swing block 16 to act on the movable arm 12, so that the movable arm 12 continues to open along the opening and closing guiding portion under the elastic force of the third elastic member 13. When the movable arm 12 continues to open to a corresponding angle, the movable arm 12 disengages from the swing block 16, and then the movable arm 12 continues to open to the maximum position; when the moving member 9 is reset, the pressing member 11 is reset under the elastic force of the second elastic member 18. When the pressing member 11 is reset, it drives the swing arm 4 to reset. At the same time, the locking and separating member 8 is reset under the elastic force of the first elastic member 10, and after the locking and separating member 8 is reset, it is locked with the moving member 9.

[0068] Closing process:

[0069] See Figures 6 - 8 , Figure 1 , the movable arm 12 starts to close under an external force. 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 guiding portion. Then the swing block 16 drives the transmission and cooperation member 17 to move toward the moving member 9, thereby compressing the fourth elastic member 14. When the movable arm 12 is closed to a corresponding angle, the elastic acting forces of the movable arm assembly 2 and the moving assembly 6 on the swing block 16 are basically balanced, and the movable arm 12 continues to be closed to the maximum position under the external force.

[0070] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An opener, comprising a bracket (1), characterized in that: An elastic movable arm assembly (2), a pressing assembly (3), a locking and unlocking assembly (5) and a moving assembly (6) are provided on a bracket (1). The arm assembly (2) is hinged to open and close on the bracket (1). A swing arm (4) is provided between the locking and unlocking assembly (5) and / or the moving assembly (6) and the pressing assembly (3). A transmission assembly (7) is provided between one ends of the moving assembly (6) and the arm assembly (2). An unlocking guide portion is provided between the locking and unlocking assembly (5) and the moving assembly (6). An opening and closing guide portion is provided between the arm assembly (2) and the transmission assembly (7). When the pressing assembly (3) is pressed, the locking and unlocking assembly (5) is unlocked from the moving assembly (6) through the swing arm (4) and the unlocking guide portion. A part of the moving assembly (6) moves towards the swing arm (4) and acts on the pressing assembly (3) through the swing arm (4), so that the pressing assembly (3) elastically extends, and the arm assembly (2) and the pressing assembly (3) simultaneously elastically extend outside the bracket (1). When the arm assembly (2) is opened to a corresponding angle, a part of the moving assembly (6) elastically resets, the locking and unlocking assembly (5) elastically resets and locks with the moving assembly (6), the pressing assembly (3) elastically resets and acts on the swing arm (4), so that the swing arm (4) resets, and the arm assembly (2) disengages from the transmission assembly (7) during the continuous opening process. When the arm assembly (2) is closed, it drives the transmission assembly (7) to act on the elastic moving assembly (6) through the opening and closing guide portion. When the arm assembly (2) is closed to a corresponding angle, the elastic acting forces of the arm assembly (2) and the moving assembly (6) on the transmission assembly (7) are basically balanced, so that the arm assembly (2) produces a hovering effect, and the arm assembly (2) continues to close under an external force. The locking and unlocking assembly (5) at least includes a locking and unlocking member (8), and the moving assembly (6) at least includes a moving member (9). The unlocking guide portion is provided between the locking and unlocking member (8) and the moving member (9). The locking and unlocking member (8) is elastically movable on the bracket (1), and is unlocked or locked with the moving member (9) through the unlocking guide portion during elastic movement. The unlocking guide portion includes a locking and unlocking portion (8.1) provided on the locking and unlocking member (8) and a guiding and cooperating portion (9.1) provided on the moving member (9). The locking and unlocking assembly (5) further includes a first elastic member (10) provided between the locking and unlocking member (8) and the bracket (1). The locking and unlocking member (8) is elastically movable on the bracket (1) through the first elastic member (10), so that the locking and unlocking portion (8.1) is locked or disengaged from the guiding and cooperating portion (9.1). The pressing assembly (3) includes a pressing member (11) and a second elastic member (18) provided between the pressing member (11) and the bracket (1). The pressing member (11) is elastically movable on the bracket (1) through the second elastic member (18) and acts on the swing arm (4) during elastic movement. The swing arm (4) is hinged to the bracket (1), and it includes a first acting end (4.1), a second acting end (4.2) and a third acting end (4.3); when the pressing member (11) elastically moves, it drives the swing arm (4) to move through the first acting end (4.1), and the third acting end (4.3) acts on the locking and separating member (8), so that the locking and separating member (8) is unlocked from the moving member (9); or, when the pressing member (11) elastically moves, it drives the swing arm (4) to reset through the first acting end (4.1); when the locking and separating member (8) is unlocked from the moving member (9), the moving member (9) elastically moves and drives the swing arm (4) to move through the second acting end (4.2), and the swing arm (4) acts on the pressing member (11) through the first acting end (4.1), so that the pressing member (11) elastically extends. The movable arm assembly (2) includes a movable arm (12) and a third elastic member (13) arranged between the movable arm (12) and the bracket (1). The movable arm (12) elastically moves on the bracket (1) through the third elastic member (13). The moving assembly (6) further includes a fourth elastic member (14) and a transmission mating member (17). The moving member (9) is elastically connected to the transmission mating member (17) through the fourth elastic member (14), and the transmission mating member (17) cooperates with the transmission assembly (7); when the locking and separating member (8) is unlocked from the moving member (9), the fourth elastic member (14) elastically acts on the moving member (9) to make the moving member (9) move towards the swing arm (4), so that the elastic force of the movable arm assembly (2) on the transmission assembly (7) is greater than the elastic force of the moving assembly (6) on the transmission assembly (7), and then the movable arm (12) elastically extends outside the bracket (1) through the elastic force of the third elastic member (13). The moving assembly (6) further includes a fifth elastic member (15) arranged between the moving member (9) and the bracket (1). The moving member (9) elastically moves on the bracket (1) through the fifth elastic member (15); when the movable arm assembly (2) is opened to a corresponding angle, the fifth elastic member (15) elastically acts on the moving member (9) to make the moving member (9) elastically reset.

2. The door opener according to claim 1, wherein: The transmission assembly (7) at least includes a swinging block (16). The opening and closing guiding part is arranged between the movable arm (l2) and the swinging block (16), and the swinging block (16) cooperates with the transmission mating member (17); when the movable arm (12) is closed, it drives the swinging block (16) to swing through the opening and closing guiding part. When the swinging block (16) swings, it acts on the transmission mating member (17) to make the transmission mating member (17) move towards the moving member (9) and act on the moving member (9) through the fourth elastic member (14).

3. The door opener according to claim 2, wherein: The opening and closing guiding part includes a guiding part (12.1) arranged on the movable arm (12) and a curve guiding and cooperating part (16.1) arranged on the swing block (16); when the movable arm assembly (2) is opened, the transmission cooperating part (17) drives the swing block (16) to act on the movable arm (12), so that the movable arm (12) rotates and opens along the curve guiding and cooperating part (16.1) through the guiding part (12.1); a acting point (16.2) is arranged on the curve guiding and cooperating part (16.1), when the movable arm (12) is opened to a corresponding angle, the guiding part (12.1) disengages from the curve guiding and cooperating part (16.1) along the acting point (16.2); when the movable arm assembly (2) is closed to a corresponding angle, the guiding part (12.1) of the movable arm (12) acts on the curve guiding and cooperating part (16.1) along the acting point (16.2) under the action of an external force, so that the swing block (16) swings.

4. The door opener according to claim 1, wherein: Linear limiting and guiding parts are respectively arranged on the bracket (1) corresponding to the locking and separating part (8), the moving part (9) and the pressing part (11), and the locking and separating part (8), the moving part (9) and the pressing part (11) are respectively linearly limited and movable on the bracket (1) through the linear limiting and guiding parts.

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