Width-adjustable automatic closing door
By adopting a combined structure of outer sleeve, inner sleeve and torsion elastic parts in the fall-proof door, the automatic closing and width adjustment of the door is achieved, solving the problem of lack of flexibility and automatic closing functions of the door system in the prior art, and improving the stability and adaptability of the door.
Patent Information
- Application Number
- CN202510640315.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-19
- Publication Date
- 2025-06-27
AI Technical Summary
The fall-proof doors in the prior art have problems such as cumbersome switches, low reliability, no autism function and poor aesthetics in use, and the door system lacks flexibility and is difficult to adapt to door frames of different spacings.
A width adjustable automatic closing door is designed, adopting a combined structure of outer sleeve, inner sleeve and torsion elastic parts. The door leaf realizes automatic closing and width adjustment through rotation and movement.
By reversing the elastic force of the elastic member, the door leaf can adjust its width according to needs and adapt to door frames of different spacings, improving the compactness and stability of the structure and reducing the risk of damage to external components.
Smart Images
Figure CN120211609A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of doors, and in particular relates to a width-adjustable automatic closing door. Background Art
[0002] At present, the anti-fall doors on platforms, ramps, bridges, steps, guardrails, gangways, cages, etc. are mostly traditional hanging chain blocking, latch doors, etc., which have many disadvantages in use, such as cumbersome opening and closing, low reliability, lack of self-closing function, poor aesthetics, etc. In addition, the door system in the prior art often lacks flexibility and is difficult to adapt to door frames with different spacings, which means that when installing or replacing the door frame, the door may need to be replaced, which increases the cost and construction difficulty.
[0003] Therefore, there is an urgent need for a door structure that can be opened and closed freely, has a self-closing function, is highly safe, and the width of the door can be freely adjusted within a certain range. Summary of the invention
[0004] In view of the above shortcomings of the prior art, an object of the present invention is to provide a width-adjustable automatic closing door.
[0005] To achieve the above objectives, the technical solutions adopted are:
[0006] The object of the present invention is to provide a width-adjustable automatic closing door, comprising an outer sleeve, an inner sleeve and a torsion elastic member being connected to the inner sleeve, the inner sleeve being fixedly sleeved inside the outer sleeve, the torsion elastic member being located at both ends of the inner sleeve and being capable of twisting around the axis of the inner sleeve; the torsion elastic member being connected to an end tube at one end away from the inner sleeve, a door leaf being connected between the end tubes at both ends, the door leaf being an open annular structure, the door leaf being capable of rotating around the axis of the inner sleeve to achieve opening and closing of the door leaf, and the torsion elastic member being capable of accumulating elastic restoring force during rotation; the door leaf being capable of moving in a direction approaching or away from the inner sleeve to achieve width adjustment of the door leaf.
[0007] The beneficial effects of adopting the above technical solution are: the automatic closing of the door is achieved through the elastic force of the torsion elastic part, the door leaf can move in the direction close to or away from the inner sleeve, the width of the door can be adjusted, and it can adapt to door frames with different spacings. The torsion elastic part is built-in, making the structure more compact and saving space, reducing the risk of possible damage to the external torsion elastic part, and improving the overall stability and durability.
[0008] Preferably, the end of the door leaf is sleeved in the end pipe. The end of the door leaf is threadedly connected with a connecting bolt. The connecting bolt includes a screw head and a screw rod. An elastic rubber block is arranged on the circumferential direction of the screw rod. The elastic rubber block is located between the screw head and the door leaf. Both ends of the elastic rubber block are abutted against the inner wall of the end pipe. A through hole is arranged at one end of the end pipe connected with the torsion elastic member. The through hole is communicated with the screw head.
[0009] The beneficial effects of adopting the above preferred technical solution are as follows: The threaded fit between the screw rod and the door leaf enables the screw head to be rotated through the through hole of the end pipe, driving the screw rod to rotate so as to adjust the distance between the door leaf and the end pipe, realizing the width adjustment of the door. In the initial locked state, the upper and lower ends of the elastic rubber block are abutted against the inner wall of the end pipe, and the left and right ends of the rubber block are abutted against the screw head and the end of the door leaf. During the adjustment process, it is necessary to loosen the connecting bolt through the through hole, so that the horizontal space of the elastic rubber block becomes larger, the horizontal deformation becomes larger, and the elastic rubber block retracts in the vertical direction and no longer abuts against the inner wall of the end pipe, which is equivalent to the unlocked state. Then, the door leaf, the bolt and the elastic rubber block can undergo horizontal displacement relative to the end pipe, so that the width of the door becomes wider or narrower. After reaching the appropriate position, the connecting bolt is tightened through the through hole again to return to the locked state.
[0010] Preferably, the torsion elastic member and the inner sleeve are of an integrally formed structure.
[0011] The beneficial effects of adopting the above preferred technical solution are as follows: Integral forming reduces the assembly steps, improves the production efficiency, ensures that the fit between the torsion elastic member and the inner sleeve is tighter, and enhances the overall stability and durability. For example, it can be a steel pipe, and spiral hollowings are arranged at positions close to both ends, that is, the hollowed-out part is of a spring steel structure, realizing that during the opening and closing process of the door, the inner sleeve does not move and the torsion elastic member rotates relative to the inner sleeve.
[0012] Preferably, the torsion elastic member is a torsion spring.
[0013] The beneficial effects of adopting the above preferred technical solution are as follows: It can also be a structure in which the inner sleeve is connected with a torsion spring, and it can also realize that during the opening and closing process of the door, the inner sleeve does not move and the torsion spring rotates relative to the inner sleeve.
[0014] More preferably, the outer sleeve is connected with a fixed column, and the fixed column is connected with the outer sleeve through a fixed seat.
[0015] The beneficial effects of adopting the above preferred technical solution are as follows: The fixed column is similar to a door frame and is used to support the door structure.
[0016] Preferably, a stop block is connected to one end of the door leaf far away from the outer sleeve member, and the stop block is connected with the door leaf through a fixing plate.
[0017] The beneficial effects of adopting the above preferred technical solutions are as follows: The stopper often needs to cooperate with a limiting structure such as a door frame to play a limiting role.
[0018] Preferably, the outer sleeve is provided with an arc-shaped slot, and the torsion elastic member is provided with a positioning pin. The positioning pin is located in the slot, and the positioning pin cooperates with the slot to limit the one-way opening and closing of the door leaf.
[0019] The beneficial effects of adopting the above preferred technical solutions are as follows: The structure of the slot and the positioning pin can limit the rotation angle of the inner sleeve and the door leaf connected thereto relative to the outer sleeve member and the fixed column, and cooperate with stoppers, door frames, etc. to realize the one-way anti-falling function of the door.
[0020] Preferably, a rubber sleeve is provided at one end of the end pipe away from the torsion elastic member, and the rubber sleeve is sleeved on the outer periphery of the door leaf.
[0021] The beneficial effects of adopting the above preferred technical solutions are as follows: The rubber sleeve can play a dust-proof role, preventing dust from entering the connection between the end pipe and the door leaf and affecting the firmness of the connection.
[0022] Preferably, a rubber pad is provided between the screw head and the elastic rubber block.
[0023] The beneficial effects of adopting the above preferred technical solutions are as follows: The rubber pad can increase the contact area, disperse the pressure, and prevent the bolt from being damaged during use.
[0024] Preferably, the door leaf is U-shaped.
[0025] The beneficial effects of adopting the above preferred technical solutions are as follows: The structure of the U-shaped door leaf can provide better support and stability.
[0026] Preferably, the torsion elastic member and the end pipe are connected by bolts.
[0027] Preferably, the inner sleeve and the outer sleeve are connected by bolts.
[0028] Preferably, the outer sleeve and the fixed seat are connected by bolts.
[0029] Preferably, the fixed seat is connected to the fixed column by bolts.
[0030] Preferably, the fixing plate and the door leaf are connected by bolts.
[0031] The beneficial effects of adopting the above preferred technical solutions are as follows: Bolt connection provides a reliable mechanical connection, which is convenient for disassembly and replacement, and simplifies the maintenance and repair process. Description of the Drawings
[0032] Figure 1Structural schematic diagram of a width-adjustable automatic closing door according to the present invention from a perspective;
[0033] Figure 2 Structural schematic diagram of a width-adjustable automatic closing door according to the present invention from another perspective;
[0034] Figure 3 For Figure 2 Enlarged view of the structure at A in
[0035] Figure 4 Cross-sectional view of a width-adjustable automatic closing door according to the present invention;
[0036] Figure 5 For Figure 4 Enlarged view of the structure at B in
[0037] Figure 6 Schematic diagram of the usage state of a width-adjustable automatic closing door according to the present invention from a top-down perspective.
[0038] Reference numerals are: 1, outer sleeve; 2, inner sleeve; 3, torsional elastic member; 4, end tube; 5, door leaf; 6, connecting bolt; 7, elastic rubber block; 8, through hole; 9, fixed seat; 10, stop block; 11, fixing plate; 12, slot hole; 13, positioning pin; 14, rubber sleeve; 15, rubber pad; 16, first bolt; 17, second bolt; 18, third bolt; 19, fourth bolt. Detailed implementation manners
[0039] The present invention will be described below in conjunction with examples. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.
[0040] Referring to Figures 1 to 6 , the present invention provides a width-adjustable automatic closing door, including an outer sleeve 1. An inner sleeve 2 and a torsional elastic member 3 are sleeved and connected inside the outer sleeve 1. The inner sleeve 2 is fixedly sleeved inside the outer sleeve 1. The torsional elastic member 3 is located at both ends of the inner sleeve 2 and can twist around the axis of the inner sleeve 2. One end of the torsional elastic member 3 away from the inner sleeve 2 is respectively connected to an end tube 4. A door leaf 5 is connected between the two end tubes 4 at both ends. The door leaf 5 is an open annular structure. The door leaf 5 can rotate around the axis of the inner sleeve 2 to realize the opening and closing of the door leaf 5, and store elastic restoring force in the torsional elastic member 3 during rotation. During rotation, the torsional elastic member 3, the end tube 4 and the door leaf 5 rotate relative to the inner sleeve 2 and the outer sleeve 1. The door leaf 5 can move along the direction of approaching or departing from the inner sleeve 2 to realize the width adjustment of the door.
[0041] As a preferred embodiment, the end of the door leaf 5 is sleeved in the end pipe 4. A connecting bolt 6 is threadedly connected to the end of the door leaf 5. The connecting bolt 6 includes a screw head and a screw rod. An elastic rubber block 7 is provided on the circumferential direction of the screw rod. The elastic rubber block 7 is located between the screw head and the door leaf 5. Both ends of the elastic rubber block 7 are in abutment with the inner wall of the end pipe 4. A through hole 8 is provided at one end of the end pipe 4 connected to the torsion elastic member 3. The through hole 8 communicates with the screw head.
[0042] As a preferred embodiment, the torsion elastic member 3 and the inner sleeve 2 are of an integrally formed structure.
[0043] As a preferred embodiment, the torsion elastic member 3 is a torsion spring.
[0044] As a preferred embodiment, the outer sleeve 1 is connected with a fixing post, and the fixing post is connected to the outer sleeve 1 through a fixing seat 9.
[0045] As a preferred embodiment, a stop block 10 is connected to one end of the door leaf 5 away from the outer sleeve member, and the stop block 10 is connected to the door leaf 5 through a fixing plate 11.
[0046] As a preferred embodiment, the outer sleeve 1 is provided with an arc-shaped slot hole 12. A positioning pin 13 is provided on the torsion elastic member 3. The positioning pin 13 is located in the slot hole 12. The cooperation between the positioning pin 13 and the slot hole 12 can limit the one-way opening and closing of the door leaf 5.
[0047] As a preferred embodiment, a rubber sleeve 14 is provided at one end of the end pipe 4 away from the torsion elastic member 3. The rubber sleeve 14 is sleeved on the outer circumference of the door leaf 5.
[0048] As a preferred embodiment, a rubber pad 15 is provided between the screw head and the elastic rubber block 7.
[0049] As a preferred embodiment, the door leaf 5 is U-shaped.
[0050] As a preferred embodiment, the torsion elastic member 3 and the end pipe 4 are connected by a first bolt 16.
[0051] In this embodiment, the inner sleeve 2, the outer sleeve 1 and the fixing seat 9 are connected by a second bolt 17.
[0052] In this embodiment, the fixing seat 9 is connected to the fixing post by a third bolt 18.
[0053] In this embodiment, the fixing plate 11 and the door leaf 5 are connected by a fourth bolt 19.
[0054] In a preferred embodiment, the central angle of the arc-shaped slot hole 12 is at most 180 degrees, and more preferably 90 degrees.
[0055] During operation, as Figure 5 shown, the door leaf 5 is initially in a closed state. The stop block 10 is limited by the door frame, and the positioning pin 13 is located at one end of the slot hole 12 to prevent the door leaf 5 from rotating counterclockwise in Figure 5 it, playing a role of one-way anti-falling. When the user needs to open the door leaf 5, the user pulls the U-shaped door leaf 5 inward. At this time, the door leaf 5 drives the torsion elastic member 3 to rotate relative to the fixed inner sleeve 2 and outer sleeve 1 through the end pipe 4. The torsion elastic member 3 generates elastic deformation and stores the resilience. As Figure 5 shown, taking the central angle of the arc-shaped slot hole 12 as 90 degrees as an example, the door leaf 5 can rotate clockwise by a maximum of 90 degrees. At this time, the positioning pin 13 reaches the other end of the slot hole 12 to limit the door leaf 5 from opening at a larger angle. When the user releases the hand, under the action of the elastic restoring force of the torsion elastic member 3, the door leaf 5 automatically rotates back to the initial closed position. The stop block 10 is limited by the door frame, and the positioning pin 13 returns to one end of the slot hole 12 to realize the automatic closing function. During this process, the slot hole 12 on the outer sleeve 1 cooperates with the positioning pin 13 on the torsion elastic member 3 to limit the maximum opening and closing angle of the door leaf 5, and together with the stop block 10 and the door frame, it makes it impossible to pull the door leaf 5 outward, ensuring the use safety and the one-way anti-falling function.
[0056] When the width of the door leaf 5 needs to be adjusted, use a tool to loosen the connecting bolt 6 through the through hole 8 on the end pipe 4. At this time, the elastic rubber block 7 on the screw expands in the horizontal direction and contracts in the vertical direction due to the reduced pressure, thereby releasing the abutting state with the inner wall of the end pipe 4. At this time, the door leaf 5 can be axially moved to make it closer to or farther from the inner sleeve 2 to change the overall width. After the adjustment is in place, tighten the connecting bolt 6 again. The elastic rubber block 7 is compressed and expands in the vertical direction, and tightly abuts the inner wall of the end pipe 4 again to achieve locking. The rubber pad 15 can disperse the bolt pressure and prevent local deformation. The rubber sleeve 14 always covers the end of the door leaf 5 to prevent dust from entering and affecting the sliding adjustment. Through this structure, the width of the door leaf 5 can be steplessly adjusted to adapt to the installation requirements of door frames with different spacings.
[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A width-adjustable automatic closing door, characterized in that: It includes an outer sleeve, an inner sleeve and a torsion elastic member are connected to the inner sleeve, the inner sleeve is fixedly sleeved inside the outer sleeve, the torsion elastic member is located at both ends of the inner sleeve and can be twisted around the axis of the inner sleeve; the torsion elastic member is connected to an end tube at one end away from the inner sleeve, a door leaf is connected between the end tubes at both ends, the door leaf is an open annular structure, the door leaf can rotate around the axis of the inner sleeve to achieve opening and closing of the door leaf, and the torsion elastic member accumulates elastic restoring force when rotating; the door leaf can move in a direction close to or away from the inner sleeve to achieve width adjustment of the door leaf.
2. According to the width-adjustable automatic closing door according to claim 1, the end of the door leaf is sleeved in the end tube, and the end of the door leaf is threadedly connected with a connecting bolt, the connecting bolt includes a screw head and a screw rod, an elastic rubber block is provided in the circumference of the screw rod, the elastic rubber block is located between the screw head and the door leaf, both ends of the elastic rubber block abut against the inner wall of the end tube, and one end of the end tube connected to the torsion elastic member is provided with a through hole, and the through hole is communicated with the screw head.
3. The width-adjustable automatic closing door according to claim 1 or 2, characterized in that: The torsion elastic member and the inner sleeve are an integrally formed structure.
4. The width-adjustable automatic closing door according to claim 1, characterized in that: The torsion elastic member is a torsion spring.
5. The width-adjustable automatic closing door according to claim 2, characterized in that: A rubber pad is arranged between the screw head and the elastic rubber block.
6. The width-adjustable automatic closing door according to claim 3, characterized in that: The outer sleeve is connected with a fixing column, and the fixing column and the outer sleeve are connected through a fixing seat.
7. The width-adjustable automatic closing door according to claim 1, characterized in that: One end of the door leaf away from the outer sleeve is connected with a stopper, and the stopper is connected to the door leaf through a fixing plate.
8. The width-adjustable automatic closing door according to claim 1, characterized in that: The outer sleeve is provided with an arc-shaped slot hole, and the torsion elastic member is provided with a positioning pin, and the positioning pin is located in the slot hole. The positioning pin cooperates with the slot hole to limit the one-way opening and closing of the door leaf.
9. The width-adjustable automatic closing door according to claim 8, characterized in that: A rubber sleeve is provided at one end of the end tube away from the torsion elastic member, and the rubber sleeve is sleeved on the outer periphery of the door leaf.
10. The width-adjustable automatic closing door according to claim 1, characterized in that: The door leaf is U-shaped.