A cavity-type anti-pinch connection structure for door frame and door body

Abstract

This utility model discloses a cavity-type anti-pinch connection structure for a door frame and a door body; it belongs to the technical field of door frame and door body connection structures. Its key technical features include a door frame and a door body. A fixed seat is fixedly connected to the right side of the door frame, and a movable cavity is provided within the fixed seat. The movable cavity is a quarter-cylinder, with a radius adapted to the thickness of the door body and meeting the anti-pinch clearance requirements when the movable seat rotates. A connecting seat is provided on the right side of the fixed seat, and the door body is detachably connected to the right side of the connecting seat. This utility model integrates the anti-pinch function into the connection structure between the door frame and the door body, abandoning the traditional design that relies on external sensors. The core anti-pinch components, such as the adaptation structure of the movable cavity and the movable seat, and the cooperation between the limiting part and the abutment part, are all built-in designs, eliminating the need for additional devices on the surface of the door body or door frame. This effectively maintains the overall coordination and design uniformity of the door body, making it particularly suitable for scenarios with high aesthetic requirements.

Description

Technical Field

[0001] This utility model relates to the technical field of door frame and door body connection structure, specifically a cavity-type anti-pinch connection structure for a door frame and door body. Background Technology

[0002] In the design of the connection structure between the door and the frame, anti-pinch functionality is a crucial consideration for ensuring safety. Currently, most common anti-pinch solutions on the market achieve this by adding external devices such as infrared sensors or pressure-sensing strips to the edge of the door or the side of the frame. These devices can detect obstacles to a certain extent and trigger the door to stop or reverse its movement, thereby reducing the risk of pinching injuries. This type of solution has been applied in various scenarios such as homes, offices, and public facilities, becoming the mainstream choice for anti-pinch design.

[0003] However, anti-pinch methods relying on external sensors have significant limitations. On the one hand, external devices need to be installed on the surface of the door or door frame, disrupting the overall harmony and aesthetics of the door. This jarring effect is particularly pronounced in scenarios where design uniformity is crucial. On the other hand, external sensors rely on precision components such as circuits and sensing elements, which are prone to malfunction due to collisions, wear, and environmental interference during long-term use. Once they fail, the anti-pinch function cannot operate normally, posing a safety hazard to users and making it difficult to achieve stable and reliable anti-pinch protection from a structural perspective. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a cavity-type anti-pinch connection structure for the door frame and door body. This technical solution overcomes the significant limitations of the anti-pinch method relying on external sensors mentioned in the background art. On the one hand, external devices need to be additionally installed on the surface of the door body or door frame, disrupting the overall harmony and aesthetics of the door body. This jarring effect is particularly pronounced in scenarios where design uniformity is highly demanding. On the other hand, the operation of external sensors relies on precision components such as circuits and sensing elements, which are prone to malfunction due to collisions, wear, and environmental interference during long-term use. Once these components fail, the anti-pinch function cannot operate normally, posing a safety hazard to users and making it difficult to achieve stable and reliable anti-pinch protection from a structural perspective.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A cavity-type anti-pinch connection structure for a door frame and a door body includes a door frame and a door body. A fixed seat is fixedly connected to the right side of the door frame. A movable cavity is provided inside the fixed seat. The movable cavity is a quarter-cylinder, and the radius of the cylinder is adapted to the thickness of the door body and meets the anti-pinch clearance requirements when the movable seat rotates. A connecting seat is provided to the right side of the fixed seat. The door body is detachably connected to the right side of the connecting seat. A movable seat adapted to the movable cavity is fixedly connected to the left side of the connecting seat. The movable seat is hinged to the fixed seat. A cavity is provided inside the movable seat for placing a motor or embedded wire.

[0007] Preferably, an arc-shaped reinforcing plate is fixedly connected between the door frame and the fixing seat.

[0008] Preferably, the fixing seat has a weight-reducing through groove, which is evenly distributed along the length of the fixing seat. The width of the groove does not exceed 1 / 3 of the width of the fixing seat, and the edge of the groove is rounded to avoid stress concentration affecting the structural strength.

[0009] Preferably, a first limiting part is provided on the front side of the movable cavity, a second limiting part is provided on the rear side of the movable cavity, and an abutting part is provided on the front side of the movable seat to cooperate with the first and second limiting parts. The first limiting part is a groove on the front side of the inner wall of the movable cavity, the second limiting part is a first protrusion on the rear side of the inner wall of the movable cavity, and the abutting part is a second protrusion on the outer side of the movable seat that matches the groove and the first protrusion. When the door is closed, the abutting part abuts against the first limiting part to limit the door from excessively rotating inward. When the door is opened to its maximum angle, the abutting part abuts against the second limiting part to prevent the door from excessively rotating outward.

[0010] Preferably, the front side of the movable seat has a plurality of hinge slots evenly spaced along the vertical direction, and the right front side of the fixed seat has an integrally formed hinge block corresponding to each hinge slot. Each hinge block is located in the corresponding hinge slot. A vertically arranged central shaft passes through the movable seat and each hinge block. The movable seat is hinged to the fixed seat through the cooperation of the hinge slots, hinge blocks and central shaft. Both the movable seat and the fixed seat are integral structures forged from aluminum alloy plates.

[0011] Preferably, the top of the connector has a T-shaped slot along the vertical direction, the left side of the door is fixedly connected to the connector, the left side of the connector is fixedly connected to the T-shaped plug, the T-shaped plug and the connector have a fixing hole along the vertical direction, the fixing hole has a bolt or pin inserted, the T-shaped plug is fastened in the T-shaped slot through the fixing hole and the connector, preventing the door and the connector from loosening relative to each other.

[0012] Compared with the prior art, this utility model provides a cavity-type anti-pinch connection structure for the door frame and the door body, which has the following beneficial effects:

[0013] 1. This utility model integrates the anti-pinch function into the connection structure between the door frame and the door body, abandoning the traditional design that relies on external sensors. The core anti-pinch components, such as the matching structure of the movable cavity and the movable seat, and the cooperation between the limiting part and the abutment part, are all built-in designs. There is no need to add additional devices to the surface of the door body or door frame, which effectively maintains the overall coordination and design uniformity of the door body, and is especially suitable for scenarios with high requirements for aesthetic appearance.

[0014] 2. The anti-pinch function of this utility model is achieved through the cooperation of the mechanical structure itself: the rotation gap design between the quarter-cylindrical movable cavity and the movable seat directly limits the risk of pinching injury when the door is opened and closed. The mechanical limiting of the first limiting part, the second limiting part, and the abutment part further avoids the risk of pinching injury caused by excessive rotation of the door. Compared with external sensors that rely on circuits and precision components, this purely mechanical anti-pinch method is less affected by environmental interference and is less prone to failure due to collisions, wear, etc. From a structural perspective, it ensures the long-term stability and reliability of the anti-pinch function and reduces safety hazards.

[0015] 3. This utility model achieves anti-pinch protection through its main structure, preventing pinching at its source. Furthermore, considering the diversity of doors, this structure is suitable for all types of hinged doors, such as entrance doors, interior doors, and courtyard doors. In addition, to accommodate intelligent automation, this structure has a pre-reserved cavity for housing a motor to enable electric opening and closing of the door, avoiding external installation of the door opener and the need for multiple hinges, thus reducing door installation work. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the fixed seat and the movable seat after they are separated in this utility model;

[0018] Figure 3 This is a top view of the connection between the door frame and the door body in this utility model.

[0019] The following are the labels in the diagram: 1. Door frame; 2. Door body; 3. Fixed seat; 4. Movable cavity; 5. Weight reduction groove; 6. Central shaft; 7. Hinge block; 8. Hinge groove; 9. Movable seat; 10. Arc-shaped reinforcing plate; 11. Connector; 12. T-shaped slot; 13. T-shaped insert; 14. Fixed hole; 15. Abutment part; 16. First limiting part; 17. Second limiting part; 18. Connecting seat; 19. Cavity. Detailed Implementation

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0021] Example 1

[0022] Please refer to Figures 1 to 3 As shown, a cavity-type anti-pinch connection structure for a door frame and a door body includes a door frame 1 and a door body 2. A fixed seat 3 is fixedly connected to the right side of the door frame 1. A movable cavity 4 is provided inside the fixed seat 3. The movable cavity 4 is a quarter-cylinder, and the radius of the cylinder is adapted to the thickness of the door body 2 and meets the anti-pinch clearance requirements when the movable seat 9 rotates. A connecting seat 18 is provided on the right side of the fixed seat 3. The door body 2 is detachably connected to the right side of the connecting seat 18. A movable seat 9 adapted to the movable cavity 4 is fixedly connected to the left side of the connecting seat 18. The movable seat 9 is hinged to the fixed seat 3. A cavity 19 is provided inside the movable seat 9 for placing a motor or embedded wire.

[0023] Those skilled in the art will understand that the door frame 1 is connected to the connecting seat 18 via the fixed seat 3. The movable seat 9 on the left side of the connecting seat 18 rotates around the hinge structure in the quarter-cylindrical movable cavity 4 of the fixed seat 3. The radius of the movable cavity 4 is adapted to the thickness of the door body 2 to ensure the anti-pinch gap during rotation. The cavity 19 of the movable seat 9 can accommodate the motor or embedded wire. The door body 2 and the connecting seat 18 are detachably connected.

[0024] The anti-pinch function is achieved through a built-in mechanical structure, eliminating the need for external sensors, maintaining the aesthetics of the door, and simultaneously balancing functionality and installation flexibility.

[0025] Example 2

[0026] Furthermore, an arc-shaped reinforcing plate 10 is fixedly connected between the door frame 1 and the fixed base 3.

[0027] Those skilled in the art will understand that the arc-shaped reinforcing plate 10 between the door frame 1 and the fixed base 3 increases the connection strength and disperses the stress when the door body 2 rotates. This improves the overall structural stability and extends the service life.

[0028] Example 3

[0029] Furthermore, a weight-reducing groove 5 is provided on the fixed base 3. The weight-reducing groove 5 is evenly distributed along the length of the fixed base 3. The groove width does not exceed 1 / 3 of the width of the fixed base, and the edge of the groove is rounded to avoid stress concentration affecting the structural strength.

[0030] Those skilled in the art will understand that the weight-reducing grooves 5 on the mounting base 3 are evenly distributed along the length direction, with the groove width not exceeding 1 / 3 of the width of the mounting base, and the rounded edges reduce stress concentration. This reduces structural weight while maintaining strength, lowering material costs and installation burden.

[0031] Example 4

[0032] Furthermore, a first limiting part 16 is provided on the front side of the interior of the movable cavity 4, and a second limiting part 17 is provided on the rear side of the interior of the movable cavity 4. An abutting part 15 is provided on the front side of the movable seat 9, which cooperates with the first limiting part 16 and the second limiting part 17. The first limiting part 16 is a groove on the front side of the inner wall of the movable cavity 4, the second limiting part 17 is a first protrusion on the rear side of the inner wall of the movable cavity 4, and the abutting part 15 is a second protrusion on the outer side of the movable seat 9 that is adapted to the groove and the first protrusion. When the door 2 is closed, the abutting part 15 abuts against the first limiting part 16 to limit the door 2 from excessively rotating inward. When the door 2 is opened to the maximum angle, the abutting part 15 abuts against the second limiting part 17 to prevent the door 2 from excessively rotating outward.

[0033] Those skilled in the art will understand that by precisely controlling the opening and closing angle of the door 2 through mechanical limit, the anti-pinch effect is further enhanced, and safety hazards caused by excessive rotation are avoided.

[0034] Example 5

[0035] Furthermore, the front side of the movable seat 9 is provided with several hinge slots 8 that are equidistantly distributed along the vertical direction. The right front side of the fixed seat 3 is integrally formed with hinge blocks 7 that correspond one-to-one with each hinge slot 8. Each hinge block 7 is located in the corresponding hinge slot 8. A vertically arranged central shaft 6 is provided between the movable seat 9 and each hinge block 7. The movable seat 9 is hinged to the fixed seat 3 through the cooperation of the hinge slots 8, hinge blocks 7 and central shaft 6. Both the movable seat 9 and the fixed seat 3 are integral structures forged from aluminum alloy plates.

[0036] Those skilled in the art will understand that the hinge slot 8 of the movable seat 9 and the hinge block 7 of the fixed seat 3 are hinged together via the central shaft 6. The integrated aluminum alloy structure enhances the connection strength and ensures rotational stability. The hinge structure is flexible and durable, and the integrated design reduces assembly errors and improves overall reliability. The elimination of the hinged door opening method significantly increases the door's load-bearing capacity.

[0037] Example 6

[0038] Furthermore, a T-shaped slot 12 is provided vertically at the top of the connecting seat 18, a connector 11 is fixedly connected to the left side of the door body 2, and a T-shaped plug 13 is fixedly connected to the left side of the connector 11. A fixing hole 14 is provided vertically between the T-shaped plug 13 and the connecting seat 18, and a bolt or pin is inserted into the fixing hole 14. The T-shaped plug 13 is fastened in the T-shaped slot 12 through the fixing hole 14 and the connector, preventing the door body 2 and the connecting seat 18 from becoming loose.

[0039] Those skilled in the art will understand that the connector 11 of the door body 2 is inserted into the T-shaped slot 12 of the connector 18 via the T-shaped insert 13 and is fastened by bolts or pins in the fixing hole 14.

[0040] This achieves a stable and detachable connection between the door body 2 and the connecting seat 18, facilitating installation, maintenance, and replacement.

[0041] The working principle and usage process of this device are as follows: The right side of the door frame 1 is fixedly connected to the fixed seat 3. The fixed seat 3 and the door frame 1 are reinforced by an arc-shaped reinforcing plate 10. The weight-reducing groove 5 on the fixed seat 3 reduces weight and avoids stress concentration. The movable seat 9 is hinged to the fixed seat 3 through the cooperation of the hinge groove 8, the hinge block 7 and the central shaft 6. It can rotate in the quarter-cylindrical movable cavity 4. Its rotation range is limited by the cooperation of the abutment part 15 of the movable seat 9 and the first limiting part 16 and the second limiting part 17 of the movable cavity 4. The door body 2 is inserted into the T-shaped slot 12 of the connecting seat 18 through the T-shaped insert 13 of the connector 11 and is fixed by the bolts or pins in the fixing hole 14. The connecting seat 18 is fixedly connected to the movable seat 9. The cavity 19 of the movable seat 9 can be used to place the motor or embed the wire. When in use, the door body 2 rotates in the movable cavity 4 with the movable seat 9. The anti-pinch function is achieved through the gap design and limiting structure of the movable cavity 4. The overall structure takes into account safety, stability and aesthetics.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cavity type anti-pinch connection structure of a door frame and a door body, comprising a door frame (1) and a door body (2), characterized in that, A fixed seat (3) is fixedly connected to the right side of the door frame (1). A movable cavity (4) is provided inside the fixed seat (3). The movable cavity (4) is a quarter-cylinder. The radius of the cylinder is adapted to the thickness of the door body (2) and meets the anti-pinch gap requirements when the movable seat (9) rotates. A connecting seat (18) is provided on the right side of the fixed seat (3). The door body (2) is detachably connected to the right side of the connecting seat (18). A movable seat (9) adapted to the movable cavity (4) is fixedly connected to the left side of the connecting seat (18). The movable seat (9) is hinged to the fixed seat (3). A cavity (19) is provided inside the movable seat (9) for placing a motor or buried wire.

2. The cavity-type anti-pinch connection structure for a door frame and a door body according to claim 1, characterized in that, An arc-shaped reinforcing plate (10) is fixedly connected between the door frame (1) and the fixed seat (3).

3. The cavity-type anti-pinch connection structure for a door frame and a door body according to claim 1, characterized in that, The fixed seat (3) is provided with a weight-reducing through groove (5). The weight-reducing through groove (5) is evenly distributed along the length of the fixed seat (3). The groove width does not exceed 1 / 3 of the width of the fixed seat, and the edge of the groove is rounded to avoid stress concentration affecting the structural strength.

4. The cavity-type anti-pinch connection structure for a door frame and a door body according to claim 1, characterized in that, The movable cavity (4) is provided with a first limiting part (16) on the front side inside, and a second limiting part (17) is provided on the rear side inside. The movable seat (9) is provided with an abutment part (15) that cooperates with the first limiting part (16) and the second limiting part (17) on the front side. The first limiting part (16) is a groove on the front side of the inner wall of the movable cavity (4), the second limiting part (17) is a first protrusion on the rear side of the inner wall of the movable cavity (4), and the abutment part (15) is a second protrusion on the outer side of the movable seat (9) that is adapted to the groove and the first protrusion. When the door (2) is closed, the abutment part (15) abuts against the first limiting part (16) to limit the door (2) from rotating inward too much. When the door (2) is opened to the maximum angle, the abutment part (15) abuts against the second limiting part (17) to prevent the door (2) from rotating outward too much.

5. The cavity-type anti-pinch connection structure for a door frame and a door body according to claim 1, characterized in that, The front side of the movable seat (9) is provided with several hinge slots (8) that are evenly spaced along the vertical direction. The right front side of the fixed seat (3) is integrally formed with hinge blocks (7) that correspond one-to-one with each hinge slot (8). Each hinge block (7) is located in the corresponding hinge slot (8). The movable seat (9) and each hinge block (7) are connected by a vertically arranged central shaft (6). The movable seat (9) is hinged to the fixed seat (3) through the cooperation of the hinge slots (8), hinge blocks (7) and central shaft (6). The movable seat (9) and the fixed seat (3) are both integral structures forged from aluminum alloy plates.

6. The cavity-type anti-pinch connection structure for a door frame and a door body according to claim 1, characterized in that, The top of the connecting seat (18) is provided with a T-shaped slot (12) in the vertical direction. The left side of the door body (2) is fixedly connected to a connector (11). The left side of the connector (11) is fixedly connected to a T-shaped plug (13). A fixing hole (14) is provided between the T-shaped plug (13) and the connecting seat (18) in the vertical direction. A bolt or pin is inserted into the fixing hole (14). The T-shaped plug (13) is fastened in the T-shaped slot (12) through the fixing hole (14) and the connector to prevent the door body (2) and the connecting seat (18) from loosening relative to each other.

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