Door opening press rebound device with safety protection device

Abstract

The present invention relates to a door opening push rebounder with a safety protection device, comprising a bracket, on which an elastic pressing component, a swing arm component, a first elastic movable block, a first elastic part, and a linkage mechanism are provided. The first elastic movable block is a safety protection device. During transportation, the elastic pressing component is in a state where it is not pressed to open, and the swing arm component is closed toward the first elastic movable block by external force in an open state. The first elastic movable block is locked with the swing arm component, and the swing arm component cannot be opened. After the first elastic movable block is acted on to unlock the first elastic movable block and the swing arm component, the swing arm component cannot be opened either. The elastic pressing component must be pressed, and the swing arm component can be opened only after the first elastic movable block is unlocked from the swing arm component, so that the door opening push rebounder is easy to pack during transportation. During transportation, the safety protection device reduces the pop-up angle of the door opening push rebounder swing arm component, the swing angle of the parts is small, and the service life is extended.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture accessories, in particular to a door opening pressing rebound device with a safety protection device. Background Art

[0002] Chinese Patent No. 202211035395.X discloses a push-and-rebound door opener, comprising a bracket, a movable arm elastically movably disposed on the bracket, and a pressing assembly, a transmission mechanism being disposed between the movable arm and the pressing assembly, a first elastic member being disposed 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 the 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 when the door opens, thereby preventing the user from accidentally touching the pressing assembly after the door opens, causing the movable arm to open and injure the user.

[0003] In the above-mentioned push-and-bounce door opener, the movable arm is elastically opened in the opening direction by an elastic member. The applicant has made improvements to the push-and-bounce door opener by adding a safety protection device to prevent the movable arm from opening under the action of the elastic member, and even when there is no pressing component, the movable arm cannot be opened after the safety protection device is unlocked. Summary of the Invention

[0004] The purpose of the present invention is to provide a door opening press rebounder with a safety protection device. The safety protection device is added to the door opening press rebounder in the background technology, so that the door opening press rebounder is easy to pack during transportation. During transportation, the safety protection device reduces the pop-up angle of the door opening press rebounder swing arm assembly, the swing angle of the parts is small, and the service life is extended.

[0005] A door opening press rebound device with a safety protection device designed for this purpose includes a bracket, on which are provided an elastic pressing assembly, a swing arm assembly, a first elastic movable block, and a first elastic member. A linkage mechanism is provided between the elastic pressing assembly and the swing arm assembly. The elastic pressing assembly acts on the swing arm assembly through the linkage mechanism. One end of the first elastic member elastically acts on the bracket, and the other end of the first elastic member is subjected to force in the opening direction of the swing arm assembly. The swing arm assembly is elastically opened in the opening direction by the first elastic member.

[0006] When the elastic pressing assembly is not pressed to open, the swing arm assembly is closed toward the first elastic movable block by external force in the open state. The first elastic movable block is locked with the swing arm assembly so that the swing arm assembly cannot open automatically. When the first elastic movable block is applied and unlocked, the swing arm assembly cannot open automatically either.

[0007] When the swing arm assembly is locked in position with the first elastic movable block, the elastic pressing assembly is pressed, and the elastic pressing assembly extends out of the bracket and drives the linkage mechanism to act on the swing arm assembly, so that the force of the linkage mechanism acting on the swing arm assembly changes; the first elastic movable block is acted on to unlock the first elastic movable block and the swing arm assembly, and the swing arm assembly is automatically opened through the first elastic member.

[0008] The first elastic movable block is a safety protection device. During transportation, the elastic pressing assembly is in the state of not being pressed to open, and the swing arm assembly is in the open state and is closed toward the first elastic movable block by external force. The first elastic movable block and the swing arm assembly are locked in position, and the swing arm assembly cannot be opened. Even after the first elastic movable block and the swing arm assembly are unlocked, the swing arm assembly cannot be opened. The elastic pressing assembly must be pressed, and the swing arm assembly can only be opened after the first elastic movable block and the swing arm assembly are unlocked, so that the door opening press rebounder is easy to pack during transportation. During transportation, the safety protection device reduces the pop-up angle of the door opening press rebounder swing arm assembly, the swing angle of the parts is small, and the service life is extended.

[0009] When the swing arm assembly is locked in position with the first elastic movable block, the force exerted by the first elastic movable block on the swing arm assembly is greater than the force exerted by the first elastic member on the swing arm assembly. After the swing arm assembly is locked in position with the first elastic movable block, the swing arm assembly cannot open automatically.

[0010] The linkage mechanism includes a rotating first pendulum block. When the swing arm assembly is locked in position with the first elastic movable block, the first pendulum block is provided with a first acting surface acting on the swing arm assembly. The first pendulum block acts against the force direction of the first elastic member on the swing arm assembly through the first acting surface, thereby reducing the force of the first elastic member to elastically open the swing arm assembly.

[0011] The linkage mechanism also includes a telescopic movable component provided with a second elastic member, and the bracket is provided with a third elastic member corresponding to the telescopic movable component. When the swing arm assembly is locked in position with the first elastic movable block, the elastic pressing assembly is in a non-pressed open state, and the force of the second elastic member and the third elastic member acting on the swing arm assembly through the telescopic movable component and the first acting surface of the first swing block is greater than or equal to the force of the first elastic member to elastically open the swing arm assembly; when the first elastic movable block and the swing arm assembly are unlocked, the swing arm assembly cannot open automatically.

[0012] The linkage mechanism also includes a telescopic movable component provided with a second elastic member, and the bracket is provided with a third elastic member corresponding to the telescopic movable component. When the swing arm assembly is locked in position with the first elastic movable block, the elastic pressing assembly is pressed to open. The force of the second elastic member and the third elastic member acting on the swing arm assembly through the telescopic movable component and the first acting surface of the first swing block is less than the force of the first elastic member to elastically open the swing arm assembly. When the first elastic movable block is unlocked from the swing arm assembly, the swing arm assembly automatically opens.

[0013] The second elastic member is compressed by the telescopic movable component, and the telescopic movable component acts on the first pendulum block. The first pendulum block acts on the swing arm assembly through the first action surface to increase the force against the elastic opening of the swing arm assembly against the first elastic member, so that the swing arm assembly cannot open automatically when the first elastic movable block is unlocked from the swing arm assembly.

[0014] The elastic force of the second elastic member is released through the telescopic activity of the telescopic movable component, and the telescopic movable component acts on the first pendulum block. The first pendulum block acts on the swing arm assembly through the first action surface to reduce the force on the swing arm assembly that elastically opens against the first elastic member. When the first elastic movable block is unlocked from the swing arm assembly, the swing arm assembly automatically opens.

[0015] When the elastic pressing assembly is elastically extended and the first elastic movable block is unlocked from the swing arm assembly, the swing arm assembly automatically opens and the first elastic movable block elastically resets. The force of the swing arm assembly closing under the action of external force is greater than the force of the first elastic member to open the swing arm assembly. The swing arm assembly is closed on the bracket, and the swing arm assembly and the first elastic movable block are not locked in position. The swing arm assembly is always in an elastically open state under the force of the first elastic member.

[0016] The linkage mechanism includes a first pendulum block, which is provided with a second action surface. The second action surface acts on the swing arm assembly and does not act on the first action surface. The swing arm assembly is always in an elastically open state through the first elastic member.

[0017] The linkage mechanism also includes a second swing block and an elastic telescopic movable component. The bracket is provided with a second elastic movable block corresponding to the telescopic movable component, and a locking and engaging portion is provided between the telescopic movable component and the second elastic movable block.

[0018] The bracket is provided with a third elastic part corresponding to the telescopic movable component, the second pendulum block is provided with a first acting part acting on the elastic pressing component, the second pendulum block is provided with a second acting part acting on the telescopic movable component, the second pendulum block is provided with a third acting part acting on the second elastic movable block, and the elastic pressing component acts on the swing arm assembly through the second pendulum block, the telescopic movable component and the first pendulum block.

[0019] The present invention has the following beneficial effects:

[0020] The first elastic movable block is a safety protection device. During transportation, the elastic pressing assembly is in the state of not being pressed to open, and the swing arm assembly is in the open state and is closed toward the first elastic movable block by external force. The first elastic movable block and the swing arm assembly are locked in position, and the swing arm assembly cannot be opened. Even after the first elastic movable block and the swing arm assembly are unlocked, the swing arm assembly cannot be opened. The elastic pressing assembly must be pressed, and the swing arm assembly can only be opened after the first elastic movable block and the swing arm assembly are unlocked, so that the door opening press rebounder is easy to pack during transportation. During transportation, the safety protection device reduces the pop-up angle of the door opening press rebounder swing arm assembly, the swing angle of the parts is small, and the service life is extended.

[0021] The first pendulum block has two active surfaces. The first active surface is used during transportation to prevent the swing arm assembly from opening automatically, making it easier to pack the door opening push-rebound device during transportation. During transportation, the safety protection device reduces the ejection angle of the door opening push-rebound device swing arm assembly, resulting in a small swing angle for the parts and a longer service life. The second active surface is used when the door opening push-rebound device is operating normally. The door opening push-rebound device is installed on the cabinet body. When the door opening push-rebound device is pressed, the door body automatically opens. By changing the shape of the two active surfaces of the first pendulum block and changing the active surface acting on the swing arm assembly, the force point and / or surface on which the first pendulum block acts on the swing arm assembly is changed.

[0022] The first swing block is provided with two action surfaces, which can be switched according to the transportation or normal operation of the door opening press rebound device, thereby improving the performance of the door opening press rebound device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the locking structure of the first elastic movable block and the swing arm assembly in one embodiment of the present invention.

[0024] Figure 2 This is a structural schematic diagram of an embodiment of the present invention in which the swing arm assembly cannot automatically open after the first elastic movable block is unlocked from the swing arm assembly.

[0025] Figure 3 This is a structural diagram of pressing the elastic pressing assembly after the first elastic movable block is locked with the swing arm assembly in one embodiment of the present invention.

[0026] Figure 4 This is a structural schematic diagram of the swing arm assembly opening after the elastic pressing assembly is pressed and the first elastic movable block is unlocked from the swing arm assembly according to an embodiment of the present invention.

[0027] Figure 5 This is a schematic structural diagram of a fully opened swing arm assembly according to an embodiment of the present invention.

[0028] Figure 6This is a structural schematic diagram of a swing arm assembly according to an embodiment of the present invention, which is opened and then closed under the action of an external force.

[0029] Figure 7 This is a structural schematic diagram of an embodiment of the present invention in which a swing arm assembly is opened, closed under the action of an external force, and then opened by pressing an elastic pressing assembly (here is a scenario where it is installed on a cabinet).

[0030] Figure 8 This is a schematic structural diagram of the first pendulum block according to an embodiment of the present invention.

[0031] Figure 9 This is a schematic diagram of the assembly and decomposition structure of the first pendulum block and the swing arm assembly according to an embodiment of the present invention.

[0032] Figure 10 This is a schematic diagram of the exploded structure of the door opening and pressing rebound device according to one embodiment of the present invention.

[0033] Figure 11 This is a structural diagram of the telescopic movable component and the second elastic movable block according to an embodiment of the present invention.

[0034] Figure 12 This is a structural diagram of a door opening pressing rebound device installed on a cabinet according to an embodiment of the present invention.

[0035] Figure 13 This is a structural schematic diagram of a telescopic movable assembly acting on a swing arm assembly through a first swing block according to an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] See also Figures 1-13 A door opening press rebound device with a safety protection device includes a bracket 1, on which are provided an elastic pressing component 2, a swing arm component 3, a first elastic movable block 6, and a first elastic member 7. A linkage mechanism is provided between the elastic pressing component 2 and the swing arm component 3. The elastic pressing component 2 acts on the swing arm component 3 through the linkage mechanism. One end of the first elastic member 7 elastically acts on the bracket 1, and the other end of the first elastic member 7 is subjected to force in the opening direction of the swing arm component 3. The swing arm component 3 is elastically opened along the opening direction by the first elastic member 7.

[0038] When the elastic pressing component 2 is not pressed to open, the swing arm component 3 is closed toward the first elastic movable block 6 by external force in the open state. The first elastic movable block 6 is locked with the swing arm component 3, so that the swing arm component 3 cannot open automatically. When the first elastic movable block 6 is applied and unlocked, the swing arm component 3 cannot open automatically either.

[0039] When the swing arm assembly 3 is locked in position with the first elastic movable block 6, by pressing the elastic pressing assembly 2, the elastic pressing assembly 2 extends out of the bracket 1 and drives the linkage mechanism to act on the swing arm assembly 3, so that the force of the linkage mechanism acting on the swing arm assembly 3 changes; the first elastic movable block 6 is acted on to unlock the first elastic movable block 6 and the swing arm assembly 3, and the swing arm assembly 3 is automatically opened through the first elastic member 7.

[0040] When the swing arm assembly 3 is locked in position with the first elastic movable block 6 , the force elastically acting on the swing arm assembly 3 by the first elastic movable block 6 is greater than the force acting on the swing arm assembly 3 by the first elastic member 7 .

[0041] The linkage mechanism includes a rotating first pendulum block 4. When the swing arm assembly 3 is locked in position with the first elastic movable block 6, the first pendulum block 4 is provided with a first acting surface 8 acting on the swing arm assembly 3. The first pendulum block 4 acts on the swing arm assembly 3 against the force direction of the first elastic member 7 through the first acting surface 8, thereby reducing the force of the first elastic member 7 to elastically open the swing arm assembly 3.

[0042] The linkage mechanism also includes a telescopic movable component 11 provided with a second elastic member 5, and the bracket 1 is provided with a third elastic member 17 corresponding to the telescopic movable component 11. When the swing arm assembly 3 is locked in position with the first elastic movable block 6, the elastic pressing component 2 is in a non-pressed open state, and the force of the second elastic member 5 and the third elastic member 17 acting on the swing arm assembly 3 through the telescopic movable component 11 and the first acting surface 8 of the first swing block 4 is greater than or equal to the force of the first elastic member 7 to elastically open the swing arm assembly 3; when the first elastic movable block 6 and the swing arm assembly 3 are unlocked, the swing arm assembly 3 cannot open automatically.

[0043] The linkage mechanism also includes a telescopic movable component 11 provided with a second elastic member 5, and the bracket 1 is provided with a third elastic member 17 corresponding to the telescopic movable component 11. When the swing arm assembly 3 is locked in position with the first elastic movable block 6, the elastic pressing component 2 is pressed to open. The force of the second elastic member 5 and the third elastic member 17 acting on the swing arm assembly 3 through the telescopic movable component 11 and the first acting surface 8 of the first swing block 4 is less than the force of the first elastic member 7 to elastically open the swing arm assembly 3. When the first elastic movable block 6 is unlocked from the swing arm assembly 3, the swing arm assembly 3 automatically opens.

[0044] The second elastic member 5 is compressed by the telescopic movable component 11, and the telescopic movable component 11 acts on the first pendulum block 4. The first pendulum block 4 acts on the swing arm assembly 3 through the first action surface 8 to increase the force against the first elastic member 7 to elastically open the swing arm assembly 3, so that when the first elastic movable block 6 and the swing arm assembly 3 are unlocked, the swing arm assembly 3 cannot open automatically.

[0045] The elastic force of the second elastic member 5 is released by the telescopic movable component 11, and the telescopic movable component 11 acts on the first pendulum block 4. The first pendulum block 4 acts on the swing arm assembly 3 through the first action surface 8 to reduce the force on the swing arm assembly 3 that elastically opens against the first elastic member 7. When the first elastic movable block 6 is unlocked from the swing arm assembly 3, the swing arm assembly 3 automatically opens.

[0046] When the elastic pressing component 2 is elastically extended and the first elastic movable block 6 is unlocked from the swing arm component 3, the swing arm component 3 automatically opens, and the first elastic movable block 6 elastically resets. The force of closing the swing arm component 3 under the action of external force is greater than the force of opening the swing arm component 3 by the first elastic member 7. The swing arm component 3 is closed on the bracket 1, and the swing arm component 3 and the first elastic movable block 6 are not locked in position. The swing arm component 3 is always in an elastically open state under the force of the first elastic member 7.

[0047] The linkage mechanism includes a first pendulum block 4, which is provided with a second action surface 9. The second action surface 9 acts on the swing arm assembly 3 and does not act on the first action surface 8. The swing arm assembly 3 is always in an elastically open state through the first elastic member 7.

[0048] The linkage mechanism further includes a second pendulum block 10 and an elastic telescopic movable component 11. A second elastic movable block 12 is provided on the bracket 1 corresponding to the telescopic movable component 11. A locking and disengaging portion 16 is provided between the telescopic movable component 11 and the second elastic movable block 12.

[0049] The bracket 1 is provided with a third elastic part 17 corresponding to the telescopic movable component 11, the second pendulum block 10 is provided with a first acting part 13 acting on the elastic pressing component 2, the second pendulum block 10 is provided with a second acting part 14 acting on the telescopic movable component 11, the second pendulum block 10 is provided with a third acting part 15 acting on the second elastic movable block 12, and the elastic pressing component 2 acts on the swing arm component 3 through the second pendulum block 10, the telescopic movable component 11 and the first pendulum block 4.

[0050] In this embodiment, the swing arm assembly 3 includes a swing rod, which is provided with an installation avoidance groove. The avoidance groove at one end of the swing rod is provided with a first rotating member. The first rotating member is arranged in the avoidance groove of the swing rod through a rotating shaft and a rivet. The first elastic member 7 is a torsion spring. The first elastic member 7 is located in the avoidance groove of the swing rod when installed. The bracket 1 is provided with a positioning rotation axis corresponding to the rotation position of the swing rod. The first elastic member 7 and the swing rod corresponding to the positioning rotation axis are both provided with axial holes. The positioning rotation axis is inserted into the axial holes of the swing rod and the first elastic member 7. A limiting rib is provided on the bracket 1 corresponding to one end of the first elastic member 7. Therefore, one end of the first elastic member 7 can elastically act on the bracket 1, and the other end of the first elastic member 7 acts in the direction of rotation and opening of the swing rod. The other end of the first elastic member 7 is subjected to force in the opening direction of the swing arm assembly 3.

[0051] In this embodiment, the first pendulum block 4 is provided with an axial hole, and a mounting shaft is provided on the bracket 1 corresponding to the axial hole of the first pendulum block 4. The mounting shaft of the bracket 1 is inserted into the axial hole of the first pendulum block 4 so that the first pendulum block 4 can be rotatably set on the bracket 1.

[0052] In this embodiment, the telescopic movable assembly 11 includes a first connecting member and a second connecting member. A connecting rod is disposed between the first and second connecting members. A piston is disposed at each end of the connecting rod. Both ends of the connecting rod can be threadedly connected to corresponding pistons. During installation, one end of the connecting rod is inserted into the first connecting member and the piston is installed to prevent the connecting rod from being separated from the first connecting member. The second elastic member 5 is then placed over the connecting rod, and the other end of the connecting rod is inserted into the second connecting member and the piston is installed. The two ends of the second elastic member 5 act on the connecting rod's piston.

[0053] In this embodiment, the second elastic member 5 is a compression spring and the third elastic member 17 is a tension spring. One end of the third elastic member 17 acts on the hook of the bracket 1, and the other end of the third elastic member 17 acts on the hook of the first connecting member.

[0054] In this embodiment, the locking and disengaging portion 16 includes a rotating positioning member provided on the first connecting member and a locking mating surface provided on the second elastic movable block 12. When the rotating positioning member acts on the locking mating surface, the telescopic movable assembly 11 and the second elastic movable block 12 are locked in place. The structure of the elastic pressing assembly 2 in this embodiment can be found in Chinese Patent No. 202221945876.X and will not be described in detail here.

[0055] In this embodiment, the first elastic movable block 6 and the second elastic movable block 12 are both elastically movable on the bracket 1 by means of compression springs.

[0056] In this embodiment, the first action surface 8 is an inclined surface, and the second action surface 9 is an arc surface.

[0057] In this embodiment, the bracket 1 is mounted on a cabinet panel of a cabinet 18 . The cabinet 18 is provided with a door 19 . The cabinet 18 and the door 19 are hingedly connected via a hinge.

[0058] Figure 13 In FIG, A is the force point of the swing arm assembly 3.

[0059] Specifically:

[0060] See also Figure 1After the door opening press rebounder is assembled, the elastic pressing component 2 is in the non-pressed open state, the locking and disengaging parts 16 between the telescopic movable component 11 and the second elastic movable block 12 are locked, the second elastic member 5 of the telescopic movable component 11 is in a compressed state, and the third elastic member 17 acting on the telescopic movable component 11 is also in a compressed state; the second elastic movable block 12 acts on the telescopic movable component 11 under elastic release (the locking and disengaging parts 16 between the telescopic movable component 11 and the second elastic movable block 12 are locked).

[0061] Bracket 1 is provided with a retaining groove corresponding to swing arm assembly 3, and first movable block 6 is provided with a locking portion 6.1 and a separation surface 6.2. At this point, if swing arm assembly 3 is closed against first elastic movable block 6 while in the open state by external force, swing arm assembly 3 enters bracket 1 toward separation surface 6.2 of first elastic movable block 6, with one end of swing arm assembly 3 retained between the retaining groove and locking portion 6.1, while first action surface 8 of first swing block 4 acts on the other end of swing arm assembly 3 (the rotational position of swing arm assembly 3).

[0062] The force exerted by the second elastic member 5 and the third elastic member 17 on the swing arm assembly 3 through the telescopic movable assembly 11 and the first action surface 8 (inclined surface) of the first swing block 4 is greater than or equal to the force of the first elastic member 7 elastically opening the swing arm assembly 3; when the first elastic movable block 6 is unlocked from the swing arm assembly 3, the swing arm assembly 3 cannot be automatically opened (such as Figure 2 As shown), the door opening and pressing the rebound device can be used during transportation.

[0063] See also Figure 3 、 Figure 4 , when the elastic pressing component 2 is pressed, the elastic pressing component 2 extends out of the bracket 1, and the elastic pressing component 2 drives the second elastic movable block 12 to move downward through the second pendulum block 10, so that the locking and buckling parts 16 between the telescopic movable component 11 and the second elastic movable block 12 are separated, and the telescopic movable component 11 extends and acts on the first pendulum block 4, and the first pendulum block 4 acts on the swing arm component 3; at this time, the elastic force of the second elastic member 5 of the telescopic movable component 11 has been released, and only relies on the elastic force of the third elastic member 17, so the elastic force of the second elastic member 5 is released through the telescopic movement of the telescopic movable component 11, and acts on the first pendulum block 4 through the telescopic movable component 11, and the first pendulum block 4 acts on the swing arm component 3 through the first acting surface 8 to reduce the force on the swing arm component 3 that elastically opens against the first elastic member 7. When the first elastic movable block 6 is unlocked from the swing arm component 3, the swing arm component 3 automatically opens (such as Figure 5 As shown in the figure), the swing arm assembly 3 will separate from the first swing block 4 after gradually opening (so the swing arm assembly 3 will separate from the first action surface 8 and the second action surface 9 at least after being fully opened), and when the swing arm assembly 3 is opened to a certain angle position, the elastic pressing assembly 2, the second swing block 10, the telescopic movable assembly 11 and the second elastic movable block 12 will be reset.

[0064] See also Figure 6 After the swing arm assembly 3 is automatically opened, the swing arm assembly 3 is closed under the action of external force, and the first elastic movable block 6 is elastically reset. The force of closing the swing arm assembly 3 under the action of external force is greater than the force of opening the swing arm assembly 3 by the first elastic member 7. The swing arm assembly 3 is closed on the bracket 1, and the swing arm assembly 3 and the first elastic movable block 6 are not locked in position. The swing arm assembly 3 is always in an elastically open state under the force of the first elastic member 7.

[0065] For other working principles of the door opening press rebound device, please refer to 202211035395.X and will not be described in detail here.

[0066] 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 door opening press rebound device with a safety protection device, comprising a bracket (1), characterized in that: The bracket (1) is provided with an elastic pressing assembly (2), a swing arm assembly (3), a first elastic movable block (6), and a first elastic member (7). A linkage mechanism is provided between the elastic pressing assembly (2) and the swing arm assembly (3). The elastic pressing assembly (2) acts on the swing arm assembly (3) through the linkage mechanism. One end of the first elastic member (7) elastically acts on the bracket (1). The other end of the first elastic member (7) is subjected to force in the opening direction of the swing arm assembly (3). The swing arm assembly (3) is elastically opened along the opening direction by the first elastic member (7). When the elastic pressing component (2) is not pressed to open, the swing arm component (3) is closed toward the first elastic movable block (6) by external force in the open state, and the first elastic movable block (6) and the swing arm component (3) are locked in position, so that the swing arm component (3) cannot open automatically, and the first elastic movable block (6) is acted on and unlocked, so that the swing arm component (3) cannot open automatically either; When the swing arm assembly (3) and the first elastic movable block (6) are locked in position, the elastic pressing assembly (2) is pressed, so that the elastic pressing assembly (2) extends out of the bracket (1) and drives the linkage mechanism to act on the swing arm assembly (3), so that the force of the linkage mechanism acting on the swing arm assembly (3) changes; the first elastic movable block (6) is acted on, so that the first elastic movable block (6) and the swing arm assembly (3) are unlocked, and the swing arm assembly (3) is automatically opened through the first elastic member (7); The linkage mechanism comprises a rotating first pendulum block (4); when the swing arm assembly (3) and the first elastic movable block (6) are locked in position, the first pendulum block (4) is provided with a first action surface (8) acting on the swing arm assembly (3); When the elastic pressing component (2) is pressed and elastically extended, and the first elastic movable block (6) and the swing arm component (3) are unlocked, the swing arm component (3) automatically opens, and the first elastic movable block (6) elastically resets. The force of closing the swing arm component (3) under the action of an external force is greater than the force of opening the swing arm component (3) by the first elastic member (7). The swing arm component (3) is closed on the bracket (1), and the swing arm component (3) and the first elastic movable block (6) are not locked in position. The swing arm component (3) is always in an elastically open state under the force of the first elastic member (7). The first swing block (4) is provided with a second action surface (9), the second action surface (9) acts on the swing arm assembly (3) and does not act on the first action surface (8), and the swing arm assembly (3) is always in an elastically open state through the first elastic member (7); The first action surface (8) is an inclined surface, and the second action surface (9) is an arc surface.

2. The door opening press rebound device with a safety protection device according to claim 1, characterized in that: When the swing arm assembly (3) and the first elastic movable block (6) are locked in position, the force exerted by the first elastic movable block (6) on the swing arm assembly (3) is greater than the force exerted by the first elastic member (7) on the swing arm assembly (3).

3. The door opening press rebound device with a safety protection device according to claim 1, characterized in that: The first swing block (4) acts on the swing arm assembly (3) through the first action surface (8) in a direction opposite to the force applied by the first elastic member (7) to reduce the force of the first elastic member (7) to elastically open the swing arm assembly (3).

4. The door opening press rebound device with a safety protection device according to claim 3, characterized in that: The linkage mechanism further comprises a telescopic movable assembly (11) provided with a second elastic member (5); the bracket (1) is provided with a third elastic member (17) corresponding to the telescopic movable assembly (11); when the swing arm assembly (3) and the first elastic movable block (6) are locked in position, the elastic pressing assembly (2) is in a non-pressed open state; the force exerted on the swing arm assembly (3) by the second elastic member (5) and the third elastic member (17) through the telescopic movable assembly (11) and the first action surface (8) of the first swing block (4) is greater than or equal to the force exerted by the first elastic member (7) to elastically open the swing arm assembly (3); When the first elastic movable block (6) and the swing arm assembly (3) are unlocked, the swing arm assembly (3) cannot automatically open.

5. The door opening press rebound device with a safety protection device according to claim 3, characterized in that: The linkage mechanism further comprises a telescopic movable assembly (11) provided with a second elastic member (5), and the bracket (1) is provided with a third elastic member (17) corresponding to the telescopic movable assembly (11). When the swing arm assembly (3) and the first elastic movable block (6) are locked in position, the elastic pressing assembly (2) is in a pressed-open state. The force exerted on the swing arm assembly (3) by the second elastic member (5) and the third elastic member (17) through the telescopic movable assembly (11) and the first action surface (8) of the first swing block (4) is less than the force exerted by the first elastic member (7) to elastically open the swing arm assembly (3). When the first elastic movable block (6) and the swing arm assembly (3) are unlocked, the swing arm assembly (3) automatically opens.

6. The door opening press rebound device with a safety protection device according to claim 4, characterized in that: The second elastic member (5) is brought into a compressed state by the telescopic movable assembly (11), and the telescopic movable assembly (11) acts on the first pendulum block (4). The first pendulum block (4) acts on the swing arm assembly (3) through the first action surface (8), thereby increasing the force on the swing arm assembly (3) to elastically open against the first elastic member (7), so that when the first elastic movable block (6) and the swing arm assembly (3) are unlocked, the swing arm assembly (3) cannot automatically open.

7. The door opening press rebound device with a safety protection device according to claim 5, characterized in that: The elastic force of the second elastic member (5) is released by the telescopic movable assembly (11), and the telescopic movable assembly (11) acts on the first pendulum block (4). The first pendulum block (4) acts on the swing arm assembly (3) through the first action surface (8) to reduce the force on the swing arm assembly (3) that elastically opens against the first elastic member (7). When the first elastic movable block (6) is unlocked from the swing arm assembly (3), the swing arm assembly (3) automatically opens.

8. The door opening press rebound device with a safety protection device according to claim 1, characterized in that: The linkage mechanism further comprises a second swing block (10), an elastic telescopic movable component (11), a second elastic movable block (12) is provided on the bracket (1) corresponding to the telescopic movable component (11), and a locking and engaging portion (16) is provided between the telescopic movable component (11) and the second elastic movable block (12); The bracket (1) is provided with a third elastic member (17) corresponding to the telescopic movable assembly (11); the second pendulum block (10) is provided with a first acting portion (13) acting on the elastic pressing assembly (2); the second pendulum block (10) is provided with a second acting portion (14) acting on the telescopic movable assembly (11); the second pendulum block (10) is provided with a third acting portion (15) acting on the second elastic movable block (12); and the elastic pressing assembly (2) acts on the swing arm assembly (3) through the second pendulum block (10), the telescopic movable assembly (11), and the first pendulum block (4).

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