A push-to-rebound door opener

Abstract

A push-and-rebound door opener comprises a bracket, a movable arm elastically movably arranged on the bracket, and a pressing assembly, a transmission mechanism being provided between the movable arm and the pressing assembly, a first elastic member being provided between the movable arm and the bracket, the first elastic member elastically acting on the movable arm, and the pressing assembly acting on the movable arm through the transmission mechanism; the movable arm always elastically opens in an opening direction, and the movable arm performs a closing movement under the action of an external force. The push-and-rebound door opener of the present invention increases the elastic force of the first elastic member so that, in the absence of an external force, the movable arm always elastically opens in an opening direction, thereby preventing the user from accidentally touching the pressing assembly when the push-and-rebound door opener is not in use, causing the movable arm to open and injure the user. When the push-and-rebound door opener is used on furniture, whether the door is pulled open or opened by pressing, the movable arm always follows the door to open when the door is opened, thereby preventing the user from accidentally touching the pressing assembly after the door is opened, causing the movable arm to open and injure the user.

Description

Technical Field

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

[0002] Chinese patent application No. 2022219458187 describes a door opener, comprising a bracket, on which are provided an elastically movable arm assembly, a pressing assembly, a locking assembly and a moving assembly; the movable arm assembly is hingedly opened and closed on the bracket; 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. This door opener opens the movable arm assembly by pressing the pressing assembly, thereby opening the door body by pressing. However, when the door opener is not in use, for example, when it is not installed on furniture, if the user accidentally touches the pressing assembly, the movable arm assembly will open, and the user may be easily injured when the movable arm assembly opens. In addition, after the door opener is installed on furniture, the user does not open the door body by pressing the pressing assembly, but pulls the door open. After the door body is opened, the movable arm assembly is still in the closed state. At this time, if the user accidentally touches the pressing assembly, the movable arm assembly will open, which may also easily injure the user. Therefore, this door opener has a safety hazard.

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

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

[0005] A push-and-rebound door opener designed for this purpose includes a bracket, a movable arm elastically movably arranged on the bracket, and a pressing assembly, a transmission mechanism is provided between the movable arm and the pressing assembly, and is characterized in that a first elastic member is provided between the movable arm and the bracket, the first elastic member elastically acts on the movable arm, and the pressing assembly acts on the movable arm through the transmission mechanism;

[0006] The movable arm always elastically opens along the opening direction, and the movable arm performs a closing movement under the action of an external force.

[0007] The force exerted by the first elastic member on the movable arm to open it is N1, and the force exerted by the transmission mechanism to prevent the movable arm from opening is N2, and N1 is greater than N2.

[0008] One end of the first elastic member elastically acts on the movable arm along the opening direction of the movable arm, and the other end of the first elastic member elastically acts on the bracket.

[0009] The first elastic member is provided with a first support leg and a second support leg which are relatively opened outwards. The first support leg acts on the movable arm, and the second support leg acts on the bracket.

[0010] The transmission mechanism includes a swinging member. The transmission mechanism changes the force acting on the movable arm by changing the length of the swinging member's force arm, and increases the force acting on the movable arm by changing the shape of the first elastic member so that N1 is greater than N2.

[0011] When the pressing assembly is in a pending state or pressed, the movable arm is partially opened or fully opened by the first elastic member in the absence of external force.

[0012] The force of the movable arm closing under the action of external force is N3. When N3 is greater than N1, the movable arm is closed on the bracket. When N3 is less than N1, the movable arm is opened.

[0013] The transmission mechanism also includes a swing arm, a moving assembly, and a locking assembly locked with the moving assembly. The moving assembly and the locking assembly are elastically and movably arranged on the bracket respectively; when the movable arm is closed on the bracket, the pressing assembly acts on the locking assembly through the swing arm when pressed and drives the locking assembly to unlock with the moving assembly. The moving assembly moves and drives the pressing assembly to extend out of the bracket through the swing arm, and at the same time, the movable arm extends out of the bracket through the first elastic member.

[0014] The bracket is respectively provided with elastic reset parts corresponding to the pressing component, locking component and moving component. When the movable arm is opened to the corresponding angle, the pressing component, locking component, swing arm and moving component are reset respectively.

[0015] The bracket is provided with a locking assembly which is elastic and movable and engages with the movable arm; the locking assembly disengages one end of the movable arm from the locking assembly by pressing, and the movable arm disengaged from the locking assembly is elastically opened by the first elastic member.

[0016] The present invention has the following beneficial effects:

[0017] 1. By increasing the elastic force of the first elastic member (increasing the elastic force of the first elastic member can also reduce the force of the transmission mechanism on the movable arm), in the absence of external force, the movable arm always opens elastically in the opening direction, preventing the user from accidentally touching the pressing component when the push-to-rebound door opener is not in use, causing the movable arm to open and injure the user. When the push-to-rebound door opener is used on furniture, whether the door body is pulled open or opened by pressing, the movable arm always opens with the door body when the door body opens, preventing the user from accidentally touching the pressing component after the door body is opened, causing the movable arm to open and injure the user, thereby improving the safety of the push-to-rebound door opener.

[0018] 2. After pressing the pressing component of the push-to-rebound door opener, the movable arm can automatically open completely, ensuring that the user can open the movable arm with the simplest and most convenient operation, thereby improving the user experience.

[0019] 3. When the push-to-rebound door opener is used on furniture, the movable arm does not need to be installed with the door body of the furniture. It is only necessary to fix the bracket on the cabinet body of the furniture. This can simplify the installation and disassembly of the push-to-rebound door opener and improve the assembly efficiency of the push-to-rebound door opener.

[0020] 4. Arranging the movable arm, pressing assembly, locking assembly, moving assembly, swing arm and swinging member on the bracket can simplify the overall structure of the push-rebound door opener, reduce the number of components, improve the compactness of the connection between the components, reduce the volume of the push-rebound door opener, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1-Figure 2 This is a schematic diagram of the action process of pressing the rebound door opener when the door of the furniture is opened in one embodiment of the present invention.

[0022] Figure 3-Figure 5 This is a schematic diagram of the action process of pressing the rebound door opener when the furniture is pressed to open the door in one embodiment of the present invention.

[0023] Figure 6-Figure 7 This is a schematic diagram of the action process of pressing the rebound door opener when the furniture door is closed in one embodiment of the present invention.

[0024] Figure 8 Schematic diagram of the internal structure of a push-to-rebound door opener in one embodiment of the present invention.

[0025] Figure 9 A cross-sectional view of a push-to-rebound door opener according to an embodiment of the present invention.

[0026] Figure 10-12 Schematic diagram of the internal structure of the push-to-rebound door opener in other directions in one embodiment of the present invention.

[0027] Figure 13 Schematic diagram of the exploded structure of a push-to-rebound door opener in one embodiment of the present invention.

[0028] Figure 14 Schematic diagram of the overall structure of furniture in one embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] See also Figures 1-14The push-rebound door opener includes a bracket 1, a movable arm 12 elastically arranged on the bracket 1, and a pressing component 3. A transmission mechanism is provided between the movable arm 12 and the pressing component 3. A first elastic member 13 is provided between the movable arm 12 and the bracket 1. The first elastic member 13 is a torsion spring. The first elastic member 13 elastically acts on the movable arm 12, and the pressing component 3 acts on the movable arm 12 through the transmission mechanism.

[0031] In the absence of external force, the movable arm 12 always elastically opens in the opening direction, and the movable arm 12 performs a closing movement under the action of an external force.

[0032] The force exerted by the first elastic member 13 on the movable arm 12 to open is N1, and the force exerted by the transmission mechanism to prevent the movable arm 12 from opening is N2. N1 is greater than N2, so that the movable arm 12 always elastically opens along the opening direction in the absence of external force.

[0033] One end of the first elastic member 13 elastically acts on the movable arm 12 along the opening direction of the movable arm 12 , and the other end of the first elastic member 13 elastically acts on the acting portion 1 . 1 of the bracket 1 .

[0034] The first elastic member 13 is provided with a first leg 13.1 and a second leg 13.2 which are relatively open and arranged outward. The first leg 13.1 acts on the movable arm 12, and the second leg 13.2 acts on the bracket 1. The first leg 13.1 is located at one end of the first elastic member 13, and the second leg 13.2 is located at the other end of the first elastic member 13.

[0035] The transmission mechanism includes a swinging member 7. The transmission mechanism changes the length of the swinging member 7's moment arm to vary the force exerted by the transmission mechanism on the movable arm 12. Furthermore, the shape of the first elastic member 13 is modified to increase the force acting on the movable arm 12, thereby making N1 greater than N2. Specifically, utilizing the principle of leverage, the length of the swinging member 7's moment arm is shortened to reduce the force exerted by the transmission mechanism on the movable arm 12. Furthermore, the outwardly bent first and second legs 13.1, 13.2 increase the elastic force of the first elastic member 13, thereby increasing the force exerted by the first elastic member 13 on the movable arm 12, thereby making N1 greater than N2.

[0036] When the pressing assembly 3 is in a pending state (i.e., not pressed) or pressed, the movable arm 12 is partially opened or fully opened by the first elastic member 13 in the absence of external force. During the opening process of the movable arm 12, the force exerted by the first elastic member 13 on the movable arm 12 will become smaller and smaller. If the elastic force of the first elastic member 13 is large enough, the movable arm 12 can be fully opened. If the elastic force of the first elastic member 13 is small, the movable arm 12 can only be partially opened. The elastic force of the first elastic member 13 is determined by its shape, as mentioned above.

[0037] The force N3 exerted by the movable arm 12 to close under external force is . When N3 is greater than N1, the movable arm 12 is closed on the bracket 1. When N3 is less than N1, the movable arm 12 is opened. Specifically, the push-to-rebound door opener is used in furniture, which includes a cabinet A and a door B. The door B is hinged to the cabinet A via a hinge C. The bracket 1 is fixed to the cabinet A. One end of the movable arm 12 is rotatably provided with a roller 2 made of plastic. When the movable arm 12 is hinged to open and close on the bracket 1, the roller 2 moves on the door B, thereby opening or closing the door B. The external force is the elastic force of the hinge C closing the door body B, and N3 at least includes the elastic force of the hinge C closing the door body B. When N3 is greater than N1, the door body B will slowly close, and the elastic force of the hinge C will gradually decrease. When the door body B is closed to a certain angle, N3 is equal to N1, that is, the sum of the elastic force of the hinge C and the force of the transmission mechanism hindering the opening of the movable arm 12 is basically equal to the force of the first elastic member 13 acting on the movable arm 12 to open, and the door body B will hover; when N3 is less than N1, the door body B will slowly open, and the elastic force of the hinge C will gradually increase. When the door body B is opened to a certain angle, N3 is equal to N1, that is, the sum of the elastic force of the hinge C and the force of the transmission mechanism hindering the opening of the movable arm 12 is basically equal to the force of the first elastic member 13 acting on the movable arm 12 to open, and the door body B will also hover. In addition, the elastic force of the hinge C can be changed so that N3 is always greater than N1 when the door body B is closed, and the door body B will be completely closed. The elastic force of the hinge C can also be changed so that N1 is always greater than N3 when the door body B is opened, and the door body B will be completely opened.

[0038] See also Figure 1-Figure 2 When the door body B is opened, the movable arm 12 opens along with the door body B under the action of the first elastic member 13. When the movable arm 12 opens, the swing member 7 is driven to swing counterclockwise through the opening and closing guide portion. The fourth elastic member 14 drives the transmission matching member 17 to move to the right. When the movable arm 12 opens to the corresponding angle, it disengages from the swing member 7 along the opening and closing guide portion.

[0039] By setting the roller 2, when the movable arm 12 is hinged to open and close on the bracket 1, the roller 2 rolls in contact with the door body B to open or close the door body B, so that the movable arm 12 does not need to be installed with the door body B, which can simplify the installation and disassembly of the door opener.

[0040] The transmission mechanism also includes a swing arm 4, a moving component 6, and a locking component 5 locked with the moving component 6. The moving component 6 and the locking component 5 are elastically and movably arranged on the bracket 1 respectively. The swing arm 4 is arranged between the locking component 5 and / or the moving component 6 and the pressing component 3. The movable arm 12 is hinged to open and close on the bracket 1. An unlocking guide portion is provided between the locking component 5 and the moving component 6, and an opening and closing guide portion is provided between the movable arm component 2 and the swinging member 7; the pressing component 3 acts on the movable arm 12 through the swing arm 4, the locking component 5, the moving component 6 and the swinging member 7 in sequence.

[0041] When the movable arm 12 is closed on the bracket 1, the pressing component 3 presses the locking component 5 through the swing arm 4 and drives the locking component 5 to unlock with the moving component 6. The moving component 6 partially moves toward the swing arm 4 and acts on the pressing component 3 through the swing arm 4, so that the pressing component 3 elastically extends out of the bracket 1. At the same time, the movable arm 12 extends out of the bracket 1 through the first elastic member 13.

[0042] When the movable arm 12 is opened to the corresponding angle, the moving assembly 6 partially elastically resets, the locking assembly 5 elastically resets and locks with the moving assembly 6, the pressing assembly 3 elastically resets and acts on the swing arm 4 to reset the swing arm 4, and the movable arm assembly 2 is separated from the swing member 7 during the continued opening process;

[0043] When the movable arm 2 is closed, the swing member 7 is driven by the opening and closing guide portion to act on the elastic moving component 6.

[0044] The locking assembly 5 includes at least a locking member 8, the moving assembly 6 includes at least a moving member 9, and an unlocking guide portion is disposed between the locking member 8 and the moving member 9; the unlocking guide portion includes a locking portion 8.1 disposed on the locking member 8 and a guide mating portion 9.1 disposed on the moving member 9. The locking assembly 5 also includes a second elastic member 10 disposed between the locking member 8 and the bracket 1, and the second elastic member 10 is a spring;

[0045] The locking member 8 is elastically movable on the bracket 1 through the second elastic member 10, so that the locking portion 8.1 is locked or disengaged with the guide matching portion 9.1; specifically, the locking portion 8.1 is a limit block provided on the side of the locking member 8, and the guide matching portion 9.1 is a limit shaft provided on the movable member 9. When the door opener is not started, the guide matching portion 9.1 and the locking portion 8.1 are mutually limited and locked. When the pressing component 3 is pressed, the pressing component 3 drives the swing arm 4 to swing, so that the swing arm 4 pushes the locking member 8 downward ( Figure 8 1 and 8.1 are disengaged from each other. At this time, under the elastic force of the fifth elastic member 14, the movable member 9 moves toward the swing arm 4 and drives the swing arm 4 to swing. When the movable arm 2 is opened to the corresponding angle, the sixth elastic member 15 drives the movable member 9 to elastically reset (i.e., the movable member 9 moves in the opposite direction of the swing arm 4), so that the pressing component 3 is elastically reset and drives the swing arm 4 to swing, so that the swing arm 4 is reset. At the same time, the second elastic member 10 pushes the locking member 8 upward ( Figure 8 The guide fitting portion 9.1 and the locking portion 8.1 are locked to each other in a limiting manner.

[0046] The pressing assembly 3 includes a pressing member 11 and a third elastic member 18 arranged between the pressing member 11 and the bracket 1. The third elastic member 18 is a spring. The pressing member 11 elastically moves on the bracket 1 through the third elastic member 18 and acts on the swing arm 4 when elastically moving. After the pressing member 11 extends out of the bracket 1, when the moving member 9 elastically resets, the third elastic member 18 elastically acts on the pressing member 11, causing the pressing member 11 to elastically reset.

[0047] The swing arm 4 is hinged on the bracket 1 and includes a first action end 4.1, a second action end 4.2 and a third action end 4.3;

[0048] 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 member 8 to push the locking member 8 downward, thereby unlocking the locking member 8 and the moving member 9 (disengaging from each other); alternatively, when the pressing member 11 elastically moves, it drives the swing arm 4 to return to its original position through the first acting end 4.1, that is, after the pressing member 11 extends out of the bracket 1 and is elastically returned to its original position by the third elastic member 18, the pressing member 11 drives the swing arm 4 to return to its original position through the first acting end 4.1.

[0049] When the locking member 8 is unlocked from the moving member 9, the moving member 9 elastically moves (moves toward the swing arm 4) and drives the swing arm 4 to move via the second active end 4.2. The swing arm 4 acts on the pressing member 11 via the first active end 4.1, thereby causing the pressing member 11 to elastically extend out of the bracket 1. When the moving member 9 moves toward the swing arm 4, the third active end 4.3 of the swing arm 4 disengages from the locking member 8. At this time, the locking portion 8.1 of the locking member 8 acts on the guide engagement portion 9.1 of the moving member 9, preventing the locking member 8 from moving upward.

[0050] The moving component 6 also includes a fourth elastic member 14, a transmission matching member 17, and a fifth elastic member 15 arranged between the moving member 9 and the bracket 1. The moving member 9 is elastically connected to the transmission matching member 17 through the fourth elastic member 14, the fourth elastic member 14 is a spring, and the transmission matching member 17 cooperates with the transmission component 7; the moving member 9 elastically moves on the bracket 1 through the fifth elastic member 15, and the fifth elastic member 15 is a tension spring; when the movable arm assembly 2 is opened to the corresponding angle (when pressed to open), the fifth elastic member 15 elastically acts on the moving member 9 to elastically reset the moving member 9. When the moving member 9 elastically resets, the transmission matching member 17 is driven to move by the fourth elastic member 14.

[0051] A connecting rod 16 is provided on the moving part 9, and the moving part 9 is movably connected to the transmission matching part 17 through the connecting rod 16. The fourth elastic part 14 is sleeved on the connecting rod 16, and one end of the fourth elastic part 14 elastically acts on the moving part 9, and the other end of the fourth elastic part 14 elastically acts on the transmission matching part 17; a limiting portion 16.1 is provided at one end of the connecting rod 16, and a limiting matching portion 17.1 is provided on the transmission matching part 17. When the moving part 9 moves in the direction of the swing arm 4, it drives the connecting rod 16 to move and is limited on the limiting matching portion 17.1 through the limiting portion 16.1.

[0052] The swing member 7 is hinged on the bracket 1, the opening and closing guide portion is arranged between the movable arm 12 and the swing member 7, and the swing member 7 cooperates with the transmission matching member 17;

[0053] When the movable arm 12 is closed, the swinging member 7 is driven to swing through the opening and closing guide part. When the swinging member 7 swings, it acts on the transmission matching member 17, so that the transmission matching member 17 moves in the direction of the moving member 9 and acts on the moving member 9 through the fourth elastic member 14. At this time, the moving member 9 does not move (because the locking member 8 and the moving member 9 are in a mutually locked state), and the fourth elastic member 14 is compressed when the transmission matching member 17 moves.

[0054] The opening and closing guide portion includes a guide portion 12.1 provided on the movable arm 12 and a curved guide matching portion 7.1 provided on the swing member 7. The guide portion 12.1 is a rotating wheel provided on the movable arm 12.

[0055] When the movable arm 12 is opened, the moving member 9 drives the transmission fitting member 17 to move, and the transmission fitting member 17 drives the swinging member 7 to swing and act on the movable arm 12, so that the movable arm 12 rotates and opens along the curved guide fitting portion 7.1 through the guide portion 12.1; the curved guide fitting portion 7.1 is provided with an action point 7.2. When the movable arm 12 is opened to a corresponding angle, the guide portion 12.1 disengages from the curved guide fitting portion 7.1 along the action point 7.2, so that the movable arm 12 is separated from the swinging member 7. Thereafter, when the movable arm 12 continues to open, the movable arm 12 is in a state of being separated from the swinging member 7.

[0056] When the movable arm 12 is closed to the corresponding angle, the guide portion 12.1 of the movable arm 12 acts on the curved guide fitting portion 7.1 along the action point 7.2 under the action of external force, so that the swing member 7 swings. When the movable arm 12 starts to close, the guide portion 12.1 does not act on the curved guide fitting portion 7.1. When the movable arm 12 is closed to the corresponding angle, the guide portion 12.1 contacts the action point 7.2. Then, when the movable arm 12 continues to close, the guide portion 12.1 acts on the curved guide fitting portion 7.1 until the movable arm 12 is completely closed.

[0057] During the opening or closing process of the movable arm 12 , the guide portion 12 . 1 and the curved guide fitting portion 7 . 1 guide the rotation of the movable arm 12 .

[0058] The bracket 1 is provided with linear limiting guide parts corresponding to the locking part 8, the moving part 9 and the pressing part 11 respectively. The locking part 8, the moving part 9 and the pressing part 11 are linearly limited and movable on the bracket 1 through the linear limiting guide parts.

[0059] The bracket 1 is provided with a lock component 19 which is elastic and movable and engages with the movable arm 12; the lock component 19 is pressed to disengage one end of the movable arm 12 from the engagement of the lock component 19, and the movable arm 12 which has disengaged from the lock component 19 is elastically opened by the first elastic member 13, and the lock component 19 includes a sixth elastic member 19.1 and a lock 19.2, and the sixth elastic member 19.1 is a spring. When the movable arm 12 is closed, the sixth elastic member 19.1 elastically acts on the lock 19.2, and the lock 19.2 is engaged with the roller 2 of the movable arm 12. At this time, the movable arm 12 will not open. When the press-rebound door opener is in use, the movable arm 12 can be locked in the closed state by the lock component 19, which is convenient for the storage and transportation of the press-rebound door opener. When the press-rebound door opener is in use, press the lock 19.2 and the movable arm 12 will elastically open.

[0060] Working process of push-to-rebound door opener:

[0061] Press to open process:

[0062] See also Figure 3-Figure 5 , press the pressing member 11, the pressing member 11 drives the swing arm 4 to push the locking member 8 downward, the locking member 8 and the moving member 9 unlock each other, the moving member 9 moves toward the swing arm 4 under the elastic force of the fourth elastic member 14, and the movable arm 2 opens under the elastic force of the first elastic member 13. 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 opens to the corresponding angle, the moving member 9 is reset under the elastic force of the fifth elastic member 15, and drives the transmission matching member 17 to move, and the transmission matching member 17 is opened. Component 17 drives the swinging component 7 to act on the movable arm 12, so that the movable arm 12 continues to open along the opening and closing guide portion under the elastic force of the first elastic component 13, and when it continues to open to the corresponding angle, the movable arm 12 disengages from the swinging component 7, and then the movable arm 12 continues to open to the maximum position; when the movable component 9 is reset, the pressing component 11 is reset under the elastic force of the third elastic component 18, and when the pressing component 11 is reset, the swing arm 4 is driven to reset, and at the same time, the locking component 8 is reset under the elastic force of the second elastic component 10, and the locking component 8 is locked with the movable component 9 after being reset.

[0063] Shutdown process:

[0064] See also Figure 5-Figure 7The movable arm 12 begins to close under the action of external force, and when it is closed to the corresponding angle, the movable arm 12 drives the swing member 7 to swing through the opening and closing guide part, and then the swing member 7 drives the transmission matching member 17 to move in the direction of the movable member 9, thereby compressing the fourth elastic member 14, and then the movable arm 12 continues to close to the maximum position under the action of external force.

[0065] The above is a preferred embodiment of the present invention, which illustrates and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A push-and-rebound door opener, comprising a bracket (1), a movable arm (12) elastically arranged on the bracket (1), and a pressing assembly (3), wherein a transmission mechanism is provided between the movable arm (12) and the pressing assembly (3), and characterized in that: A first elastic member (13) is provided between the movable arm (12) and the bracket (1), the first elastic member (13) elastically acts on the movable arm (12), and the pressing assembly (3) acts on the movable arm (12) through a transmission mechanism; the movable arm (12) always elastically opens in the opening direction, and the movable arm (12) performs a closing movement under the action of an external force; The force exerted by the first elastic member (13) on the movable arm (12) to open is N1, and the force exerted by the transmission mechanism to prevent the movable arm (12) from opening is N2, where N1 is greater than N2; The transmission mechanism includes a swinging member (7), and the transmission mechanism changes the force acting on the movable arm (12) by changing the length of the force arm of the swinging member (7), and increases the force acting on the movable arm (12) by changing the shape of the first elastic member (13), so that N1 is greater than N2.

2. The push-to-rebound door opener according to claim 1, characterized in that: One end of the first elastic member (13) elastically acts on the movable arm (12) along the opening direction of the movable arm (12), and the other end of the first elastic member (13) elastically acts on the bracket (1).

3. The push-to-rebound door opener according to claim 1, characterized in that: The first elastic member (13) is provided with a first support leg (13.1) and a second support leg (13.2) which are relatively opened outwards. The first support leg (13.1) acts on the movable arm (12), and the second support leg (13.2) acts on the bracket (1).

4. The push-to-rebound door opener according to claim 1, characterized in that: When the pressing assembly (3) is in a pending state or pressed, the movable arm (12) is partially or fully opened by the first elastic member (13) in the absence of an external force.

5. The push-to-rebound door opener according to claim 1, characterized in that: The force of closing the movable arm (12) under the action of external force is N3. When N3 is greater than N1, the movable arm (12) is closed on the bracket (1). When N3 is less than N1, the movable arm (12) is opened.

6. The push-to-rebound door opener according to claim 5, characterized in that: The transmission mechanism further comprises a swing arm (4), a moving assembly (6), and a locking assembly (5) locked with the moving assembly (6); the moving assembly (6) and the locking assembly (5) are respectively elastically movably arranged on the bracket (1); when the movable arm (12) is closed on the bracket (1), the pressing assembly (3) acts on the locking assembly (5) through the swing arm (4) when pressed and drives the locking assembly (5) to unlock with the moving assembly (6); the moving assembly (6) moves and drives the pressing assembly (3) to extend out of the bracket (1) through the swing arm (4); and at the same time, the movable arm (12) extends out of the bracket (1) through the first elastic member (13).

7. The push-to-rebound door opener according to claim 6, characterized in that: The bracket (1) is provided with elastic reset parts corresponding to the pressing assembly (3), the locking assembly (5), and the moving assembly (6). When the movable arm (12) is opened to a corresponding angle, the pressing assembly (3), the locking assembly (5), the swing arm (4), and the moving assembly (6) are reset respectively.

8. The push-to-rebound door opener according to claim 1, characterized in that: The bracket (1) is provided with a locking assembly (19) that is elastically movable and engaged with the movable arm (12); the locking assembly (19) is pressed to disengage one end of the movable arm (12) from the locking assembly (19), and the movable arm (12) that is disengaged from the locking assembly (19) is elastically opened by the first elastic member (13).

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