A hinge safety system for an overhead folding door

Abstract

The application provides a hinge safety system for an upturn folding door, which comprises a hinge assembly, a power connection mechanism connected to the hinge assembly, a power source, a transmission assembly, a safety assembly, a safety tooth, a safety lever and an elastic member, the transmission assembly comprises a telescopic lever group and a main connecting rod group, the main connecting rod group is hingedly connected to the power source and the telescopic lever group, the two elastic ends of the elastic member are connected to the main connecting rod group and the safety lever, and when the folding door body is rapidly opened, the safety lever rotates with the main connecting rod group around the hinge joint of the main connecting rod group, and when the total sum of the gravity, centrifugal force and inertial force generated by the rotation of the swing end of the safety lever is greater than the elastic force of the elastic member, the swing end is deflected relative to the main connecting rod group and clamped in the tooth groove of the safety tooth, so that the main connecting rod group is upwardly rotated and stopped, and the safety of the upturn folding door during use is improved.

Description

Technical Field

[0001] This invention relates to the technical field of hinges, specifically a hinge safety system for an upward-folding door. Background Technology

[0002] Chinese Patent No. CN03230828.0 discloses an automatic upward-folding door bracket. The cabinet door is composed of an upper folding door and a lower folding door, hinged together. A cabinet hinge is fixed to the outer edge of the inner top wall of the cabinet, hinged to the upper folding door. The upper folding door is hinged to the lower folding door via the same hinge. A base is fixed to the inner side of the cabinet. One end of the base is connected to a pneumatic spring. The other end of the pneumatic spring, a push rod, is pivotally connected to the lower support arm of a push-pull switch mechanism installed at the other end of the base. A guide tube is sleeved in the inner hole of the horizontal arm of the push-pull switch mechanism. The other end of the guide tube is pivotally connected to the lower hinged leaf of the lower folding door via a pin. Thus, using a pneumatic spring as a power source, the cabinet door composed of the upper and lower folding doors can open, fold, and close.

[0003] However, the above-mentioned upward-folding door bracket has the following shortcomings during use: the upward-folding door has a large load and a long cantilever. Before the door panel is installed, the cantilever is subjected to a very large upward force. Without the weight of the door panel, the upward rotation acceleration is large, which makes the linear velocity of the cantilever rotating upward extremely high, which can easily cause injury to people and has poor safety performance. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hinge safety system for upward folding doors, which can solve the problem of the cantilever opening rapidly under force and causing personal injury when the cantilever is installed but before the safety door panel is in place.

[0005] The objective of this invention is achieved as follows: A hinge safety system for an upward-folding door includes a hinge assembly hinged between the folding door body and the cabinet body. The hinge assembly is connected to a power connection mechanism for opening and closing the folding door body. The power connection mechanism includes a power source positioned and connected to a side panel of the cabinet body, and a transmission assembly connected between the power source and the hinge assembly. The transmission assembly includes a safety component that, when rapidly opened under force, pushes the folding door body upward to rotate and lock it in place. The safety component includes a safety tooth, a safety rod, and an elastic element. The transmission assembly includes a telescopic rod assembly and a main connecting rod assembly. The main connecting rod assembly is hinged to the cabinet body. The two swing ends of the main connecting rod assembly are respectively connected to one end of the telescopic rod assembly and the pushing end of the power source. The safety tooth is set on the side plate of the cabinet. The positioning end of the safety rod is hinged to the main connecting rod assembly. The elastic element is set between the safety rod and the main connecting rod assembly, and its two elastic ends are respectively connected to the main connecting rod assembly and the safety rod. When the folding door is opened quickly, the safety rod rotates around the hinge point of the main connecting rod assembly with the main connecting rod assembly. At the same time, the swing end of the safety rod deflects relative to the main connecting rod assembly and engages with the tooth groove of the safety tooth when the sum of its gravity and the centrifugal force and inertial force generated during rotation is greater than the elastic force of the elastic element, so that the main connecting rod assembly stops rotating upward.

[0006] Based on the above optimization, the main connecting rod assembly is hinged to the cabinet body by the main rivet, the positioning end of the safety rod is hinged to the main connecting rod assembly by the safety rivet, there is a distance between the safety rivet and the main rivet, and the swing end of the safety rod rotates around the main rivet with the main connecting rod assembly, and the elastic element is sleeved on the safety rivet.

[0007] Based on the above optimization, the swing end of the safety bar is provided with a protruding buckle, and the tooth groove of the safety tooth is provided with an upper inclined tooth surface for locking the protruding buckle and a lower inclined tooth surface for unlocking the protruding buckle.

[0008] Based on the above optimization, the shape of the safety tooth distribution is consistent with the running trajectory of the main connecting rod assembly.

[0009] Based on the above optimization, the main connecting rod assembly is provided with an upper limit block for keeping in close contact with the safety bar when the folding door is opened at low speed.

[0010] Based on the above optimization, a force adjustment component and a transition link are provided between the main connecting rod assembly and the power source. The force adjustment component is axially connected to the side plate of the cabinet. One swing end of the force adjustment component is hinged to one end of the transition link. The adjusting movable end of the force adjustment component is hinged to the pushing end of the power source. The other end of the transition link is hinged to the swing end of the main connecting rod assembly.

[0011] Based on the above optimization, the side panel of the cabinet is equipped with a closing buffer damping component, and the swing end of the main connecting rod group is connected to the piston rod of the closing buffer damping component as the folding door closes.

[0012] Based on the above optimization, the power connection mechanism also includes a mounting housing, which can be detached and installed on the side panel of the cabinet, and the mounting housing is adapted to be equipped with a main connecting rod assembly containing a power source and transmission components, a safety component, and a closed buffer damping component.

[0013] The advantages of this invention are: through the structural cooperation of the power source, transmission components and safety components, when the opening speed or acceleration of the upward folding door exceeds a certain value, the safety rod is subjected to gravity, centrifugal force and inertial force greater than the elastic force that maintains stability, resulting in deflection and engagement into the groove of the corresponding safety tooth, thereby locking and stopping the upward rotation of the main connecting rod assembly, thus improving the safety of the upward folding door during use. Attached Figure Description

[0014] Appendix Figure 1 This is an assembly diagram of a preferred embodiment of the present invention.

[0015] Appendix Figure 2 This is a schematic diagram of the structure in the open state according to a preferred embodiment of the present invention.

[0016] Appendix Figure 3 This is a schematic diagram of the structure for rapid opening according to a preferred embodiment of the present invention.

[0017] Appendix Figure 4 This is an exploded view of a preferred embodiment of the present invention. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings.

[0019] According to the appendix Figures 1 to 4As shown, the hinge safety system for an upward-folding door of the present invention includes a hinge assembly 1 hinged between the folding door body and the cabinet body. The hinge assembly 1 is connected to a power connection mechanism for opening and closing the folding door body. The power connection mechanism includes a power source 2 positioned and connected to the side panel of the cabinet body, and a transmission assembly connected between the power source 2 and the hinge assembly 1. The transmission assembly is equipped with a safety component that can push the folding door body upward to rotate and lock when it is rapidly opened under force. The safety component includes a safety tooth 3, a safety rod 4, and an elastic element 5. The transmission assembly includes a telescopic rod assembly 6 and a main connecting rod assembly 7. The main connecting rod assembly 7 is hinged to the cabinet body, and the two swing ends of the main connecting rod assembly 7 are respectively connected to one end of the telescopic rod assembly 6 and the pushing end of the power source 2. The safety tooth 3 is located on the side panel of the cabinet. The positioning end of the safety rod 4 is hinged to the main connecting rod assembly 7. The elastic element 5 is located between the safety rod 4 and the main connecting rod assembly 7, and its two elastic ends are respectively connected to the main connecting rod assembly 7 and the safety rod 4. When the folding door is opened quickly, the safety rod 4 rotates around the hinge point of the main connecting rod assembly 7 along with the main connecting rod assembly 7. At the same time, the swing end of the safety rod 4 deflects relative to the main connecting rod assembly 7 and engages with the tooth groove 31 of the safety tooth 3 when the sum of its gravity and the centrifugal force and inertial force generated during rotation is greater than the elastic force of the elastic element 5, so that the main connecting rod assembly 7 stops rotating upward.

[0020] The hinge assembly 1 of this structure includes an upper hinge and a lower hinge. The upper hinge is hinged to the upper end of the cabinet and the upper end of the folding door, respectively. The lower end of the folding door is hinged to one end of the lower hinge, and the other end of the lower hinge is hinged to the telescopic rod.

[0021] In this way, the opening and closing of the folding door is controlled by the cooperation of the safety components and the transmission components, while utilizing the inherent motion trajectory of the safety components themselves.

[0022] Reference Figures 1 to 4 As shown, further detailed, the main connecting rod assembly 7 is hinged to the cabinet via the main rivet 8, and the positioning end of the safety rod 4 is hinged to the main connecting rod assembly 7 via the safety rivet 9. There is a distance between the safety rivet 9 and the main rivet 8, and the swing end of the safety rod 4 rotates around the main rivet 8 with the main connecting rod assembly 7. The elastic element 5 is fitted onto the safety rivet 9.

[0023] The safety bar 4 has a convex buckle 41 at its swing end. The safety tooth 3 has an upper inclined tooth surface 32 for locking the convex buckle 41 and a lower inclined tooth surface 33 for unlocking the convex buckle 41.

[0024] In addition, the main connecting rod assembly 7 is provided with an upper limit block 71 for tightly abutting the safety rod 4 when the folding door is opened at low speed.

[0025] Moreover, the shape of the safety teeth 3 is consistent with the running trajectory of the main connecting rod assembly 7.

[0026] That is, when closing, the folding door closes downwards under its own weight. In order to close the door gently and allow it to hover at will, the power source 2 of this structure is used. The power source 2 outputs an upward torque, which is transmitted to the folding door through the main connecting rod group 7 and the telescopic rod group 6 of the transmission assembly to counteract the gravity of the folding door.

[0027] When opened, the power source 2 outputs an upward torque that is transmitted to the main connecting rod assembly 7. Under the action of the force, the main connecting rod assembly 7 rotates upward until the force is balanced or the blockage is reached.

[0028] During rotation, the elastic force of the elastic element 5 can counteract the gravity of the safety bar 4, allowing the main connecting rod assembly 7 to rotate to any position. Simultaneously, the safety bar 4 generates centrifugal force as it rotates at a certain speed V.

[0029] When the rotational speed of the main connecting rod assembly 7 is lower than the speed V, the safety rod 4 adheres to the upper limit block 71 of the main connecting rod assembly 7 under the action of centrifugal force, so that there is a gap between the safety rod 4 and the safety tooth 3, and the main connecting rod assembly 7 can rotate freely.

[0030] When the main linkage assembly 7 rotates at a speed higher than speed V or accelerates rapidly, the centrifugal force, inertial force, and gravity generated by the safety bar 4 rotating around the main rivet 8 of the main linkage assembly 7 exceed the force provided by the elastic element 5. The safety bar 4 rotates relative to the main linkage assembly 7. When the safety bar 4 rotates to a certain angle d, the gap between the safety bar 4 and the safety tooth 3 disappears, and the protrusion 41 of the safety bar 4 engages with the tooth groove 31 of the safety tooth 3. At this time, the safety tooth 3 applies a reaction force F to the safety bar 4. This force is at a certain distance A from the main rivet 8, thereby generating a torque F*A, causing the main linkage assembly 7 to stop rotating upwards, thus stopping the folding door from rotating upwards and locking it to the cabinet.

[0031] In addition, in conjunction with the structure of the safety tooth 3, the upper inclined tooth surface 32 causes the buckle 41 to lock onto the tooth groove 31, preventing it from disengaging. Under the action of the lower inclined tooth surface, after locking, the main connecting rod assembly 7 is pressed downward, causing the main connecting rod assembly 7 to move in the opposite direction. The buckle 41 of the safety bar 4 disengages from the tooth groove 31, unlocking the folding door and restoring normal use.

[0032] Reference Figures 1 to 4 As shown in the diagram, further details are provided, with a force adjustment component 10 and a transition link 11 between the main connecting rod assembly 7 and the power source 2. The force adjustment component 10 is axially connected to the side panel of the cabinet. One swing end of the force adjustment component 10 is hinged to one end of the transition link 11, and the adjusting movable end of the force adjustment component 10 is hinged to the pushing end of the power source 2. The other end of the transition link 11 is hinged to the swing end of the main connecting rod assembly 7.

[0033] The force adjustment component 10 of this structure includes an adjustment link 101, an adjustment screw 102, and an adjustment nut 103. The adjustment link 101 is rotatably connected to the side plate of the cabinet, and the swing end of the adjustment link 101 is hinged to one end of the transition link 11. The adjustment screw 102 is provided on the swing end of the adjustment link 101 and is hinged to the pushing end of the power source 2. The adjustment nut 103 is rotatably connected to the adjustment link 101 and threadedly connected to the adjustment screw 102.

[0034] In this way, the transmission structure of the force adjustment component 10 and the transition link 11 can stably transmit the upward thrust of the power source 2 to the main link assembly 7 and the telescopic link assembly 6, resulting in high structural stability and improved product performance. Furthermore, rotating the adjusting nut 103 causes the adjusting screw 102 to move the pushing end of the power source 2 up and down relative to the adjusting link 101, thereby adjusting the thrust of the power source 2. This effectively adapts to the use of different products, offering high applicability.

[0035] Reference Figures 1 to 4 As shown, the side panel of the cabinet is provided with a closing buffer damping component 12, and the swing end of the main connecting rod group 7 is connected to the piston rod of the closing buffer damping component 12 as the folding door closes.

[0036] The closing buffer damping component 12 provides a buffering effect when the folding door is closed, effectively preventing the folding door from colliding with the cabinet when closed, reducing noise generation, protecting the product, improving the user experience, and enhancing safety.

[0037] Furthermore, the power connection mechanism also includes a mounting housing 13, which can be detached and installed on the side panel of the cabinet, and the mounting housing 13 is adapted to be equipped with a power source 2, a main connecting rod group 7 of a transmission assembly, a safety component, and a closed buffer damping component 12.

[0038] The mounting housing 13, which adopts a convenient disassembly and assembly method, has a stable structure and is easy to disassemble and assemble, making maintenance and replacement convenient and improving the quality of product use.

[0039] The above specific embodiments are merely specific implementations of the present invention with better effects. Any structure that is the same as or equivalent to the hinge safety system for the upward folding door of the present invention is within the protection scope of the present invention.

Claims

1. A hinge safety system for an upward-folding door, comprising a hinge assembly (1) hinged between the folding door body and a cabinet body, wherein the hinge assembly (1) is connected to a power connection mechanism for opening and closing the folding door body, the power connection mechanism comprising a power source (2) positioned and connected to a side panel of the cabinet body, and a transmission assembly connected between the power source (2) and the hinge assembly (1), characterized in that: The transmission assembly is equipped with a safety component for pushing the folding door to rotate upward and lock when it is opened rapidly under force. The safety component includes a safety tooth (3), a safety rod (4), and an elastic element (5). The transmission assembly includes a telescopic rod assembly (6) and a main connecting rod assembly (7). The main connecting rod assembly (7) is hinged to the cabinet body, and the two swing ends of the main connecting rod assembly (7) are respectively connected to one end of the telescopic rod assembly (6) and the pushing end of the power source (2). The safety tooth (3) is located on the side plate of the cabinet body. The positioning end of the safety rod (4) is hinged to the main connecting rod assembly (7). The elastic element (5) is located between the safety rod (4) and the main connecting rod assembly (7), and its two elastic ends are respectively connected to the main connecting rod assembly (7) and the safety rod (4). When the folding door opens rapidly, the safety rod (4) rotates around the hinge point of the main connecting rod assembly (7) along with the main connecting rod assembly (7). At the same time, the swing end of the safety rod (4) deflects relative to the main connecting rod assembly (7) and engages with the tooth groove (31) of the safety tooth (3) when the sum of its gravity and the centrifugal force and inertial force generated during rotation is greater than the elastic force of the elastic element (5), so that the main connecting rod assembly (7) stops rotating upward. A force adjustment component (10) and a transition link (11) are provided between the main link assembly (7) and the power source (2). The force adjustment component (10) is axially connected to the side panel of the cabinet. One swing end of the force adjustment component (10) is hinged to one end of the transition link (11). The adjustment movable end of the force adjustment component (10) is hinged to the pushing end of the power source (2). The other end of the transition link (11) is hinged to the swing end of the main link assembly (7). The side panel of the cabinet is provided with a closing buffer damping component (12), and the swing end of the main connecting rod group (7) is connected to the piston rod of the closing buffer damping component (12) as the folding door closes.

2. The hinge safety system for an upward-folding door according to claim 1, characterized in that: The main connecting rod assembly (7) is hinged to the cabinet by the main rivet (8). The positioning end of the safety rod (4) is hinged to the main connecting rod assembly (7) by the safety rivet (9). There is a distance between the safety rivet (9) and the main rivet (8). The swing end of the safety rod (4) rotates around the main rivet (8) with the main connecting rod assembly (7). The elastic element (5) is sleeved on the safety rivet (9).

3. The hinge safety system for an upward-folding door according to claim 1, characterized in that: The swing end of the safety bar (4) is provided with a buckle (41), and the tooth groove (31) of the safety tooth (3) is provided with an upper inclined tooth surface (32) for locking the buckle (41) and a lower inclined tooth surface (33) for unlocking the buckle (41).

4. The hinge safety system for an upward-folding door according to claim 3, characterized in that: The shape of the safety teeth (3) is consistent with the running trajectory of the main connecting rod assembly (7).

5. The hinge safety system for an upward-folding door according to any one of claims 1-4, characterized in that: The main linkage group (7) is provided with an upper limit block (71) for closely adhering to the safety bar (4) when the folding door is opened at low speed.

6. The hinge safety system for an upward-folding door according to claim 1, characterized in that: The power connection mechanism also includes a mounting housing (13), which is installed on the side panel of the cabinet and is adapted to be equipped with a power source (2), a main connecting rod group (7) of a transmission component, a safety component, and a closed buffer damping component (12).

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