Roller shutter door connecting structure
Through a unique connection unit design and snap-fit components, the problems of difficult disassembly and high maintenance costs of traditional roller shutter door connection structures have been solved, achieving rapid installation, stable connection and convenient maintenance, thereby improving the overall safety and service life of roller shutter doors.
Patent Information
- Application Number
- CN202423181862.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Traditional roller shutter door connection structures suffer from problems such as difficulty in disassembly, high maintenance costs, easy loosening of connection parts, and poor sealing.
Featuring a unique connection unit design, including a fixing rod, a fixing cylinder, and a fastening assembly, it enables quick installation and disassembly through the cooperation of a sliding buckle, a limiting ball, and a threaded sleeve. The fixing spring provides elastic cushioning, the sliding buckle restricts torsion, and the limiting ball and limiting groove ensure stability.
It simplifies the installation process, reduces labor intensity and costs, improves the stability and service life of the connection structure, facilitates maintenance operations, and reduces the risk of loosening and disconnection of the connection parts.
Smart Images
Figure CN223594080U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of rolling door equipment, in particular to a rolling door connecting structure. BACKGROUND
[0002] As a common door product, the rolling door is widely used in many places such as commercial stores, industrial plants and garages, and has the advantages of saving space and convenient opening and closing. In the assembly process of the rolling door, the connecting structure plays a crucial role, which directly affects the overall stability, installation convenience and service life of the rolling door.
[0003] The traditional rolling door connecting structure usually adopts simple welding, riveting or bolt connection. However, these connection methods have many defects, for example, although the welding method is firm, once the welding is completed, if there is a problem with a connection part, it is difficult to disassemble and maintain, and often the entire connection part needs to be destroyed and re-welded, which not only increases the maintenance cost and time, but also may damage other parts of the rolling door. The riveting method is prone to looseness during long-term use due to the frequent lifting and lowering of the rolling door, resulting in gaps in the connection part, affecting the sealing and overall strength of the rolling door. The bolt connection method is relatively easy to disassemble, but in actual use, due to the vibration of the rolling door, the bolt is prone to looseness, which needs to be checked and tightened regularly, otherwise it will affect the normal operation of the rolling door, and a large number of bolt connections also increase the installation workload and difficulty.
[0004] Therefore, a new type of rolling door connecting structure is invented to solve the problems in the above background. CONTENT OF THE INVENTION
[0005] In order to facilitate the disassembly and maintenance of the current rolling door connecting part, the present application provides a rolling door connecting structure.
[0006] The rolling door connecting structure provided by the present application adopts the following technical scheme: a plurality of connecting units are connected in sequence, each connecting unit includes a connecting plate, a first connecting part and a second connecting part connected to both sides of the connecting plate, the first connecting part is located on the upper side of the connecting plate, the first connecting part includes a fixed rod, two sides of the fixed rod are provided with fixed holes, a connecting rod is slidably arranged in the fixed hole, the second connecting part includes a fixed cylinder at both ends of the connecting plate, the fixed cylinder is connected with the connecting rod on the connecting unit adjacent thereto, and a buckling assembly for fixing the connecting rod is arranged in the fixed cylinder.
[0007] Optionally, a fixed compression spring is arranged in each fixed hole, and the fixed compression spring is fixedly connected with the connecting rod on the corresponding side.
[0008] Optionally, the two ends of the fixed rod are respectively provided with a fixed slot communicated with the fixed hole, and a sliding buckle slidable in the fixed slot is arranged in the fixed slot.
[0009] Optionally, the buckle assembly comprises a fixed sleeve fixedly connected in the fixed cylinder, a plug-in hole is formed in the fixed sleeve, a plurality of limiting holes are formed on the fixed sleeve and are uniformly distributed in the circumferential direction of the fixed sleeve, a movable limiting ball is arranged in each limiting hole, a threaded sleeve is threadedly connected to the outer side of the fixed sleeve, a limiting protrusion is formed on the threaded sleeve, the limiting protrusion is pushed against the limiting ball when the threaded sleeve moves on the fixed sleeve, a limiting slot is formed on the connecting rod, the limiting ball can be inserted into the limiting slot, and a reset slot is formed in the threaded sleeve.
[0010] Optionally, a limiting ring for limiting the sliding ball is arranged on the side of the limiting hole close to the plug-in hole.
[0011] Optionally, a rotating slot is formed in the fixed cylinder, and a plurality of rotating plates are arranged on the outer side of the threaded sleeve, and the threaded sleeve is located in the rotating slot.
[0012] In summary, the application has the following beneficial technical effects:
[0013] 1. The connection structure adopts a unique connection unit design, greatly simplifies the installation process of the roller shutter door, does not need a large number of bolts, nuts and other connecting parts compared with the traditional complex connection mode, the operator only needs to insert the connecting rod into the fixed cylinder, and then rotates the threaded sleeve to complete the connection and fixation, thereby significantly shortening the installation time, reducing the installation cost and labor intensity, and improving the installation efficiency.
[0014] 2. The fixed compression spring enables the connecting rod to have elastic buffering capacity in the fixed hole, can effectively absorb the vibration and impact force in the operation process of the roller shutter door, reduces the risk of loosening of the connection part, and the cooperation of the sliding buckle and the limiting ball and other structures limits and fixes the connecting rod from multiple angles, ensures that the connection structure remains stable and reliable during long-term use, effectively avoids problems such as shaking, deformation and disconnection of the connection part of the roller shutter door, and improves the overall safety and service life of the roller shutter door.
[0015] 3. When the roller shutter door needs to be locally repaired or replaced, the disassembly operation of the connection structure is very simple, the operator only needs to rotate the threaded sleeve by using a tool to make the limiting ball exit the limiting slot of the fixed rod, and then easily pull out the connecting rod, thereby realizing quick disassembly of the connection unit, facilitating inspection, repair and replacement of each part of the roller shutter door, greatly reducing the maintenance time and cost, and providing great convenience for users. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is the schematic view of the whole connecting structure of the device Figure I ;
[0017] Figure 2 It is the front view of the whole connecting structure of the device
[0018] Figure 3 It is the schematic view of the connecting unit of the device
[0019] Figure 4 It is the schematic view of the second connecting part when two connecting units of the device are connected
[0020] Figure 5 It is the sectional view of the connecting unit of the device
[0021] Figure 6 It is the enlarged view of A in the device Figure 4
[0022] It is the enlarged view of B in the device Figure 7
[0023] It is the side view of the device Figure 8 Figure 5
[0024] Wherein, 1, connecting unit, 2, connecting plate, 3, first connecting part, 4, second connecting part, 5, fixed rod, 6, fixed hole, 7, connecting rod, 8, fixed cylinder, 9, buckling assembly, 10, fixed compression spring, 11, fixed groove, 12, sliding buckle, 13, fixed sleeve, 14, plug-in hole, 15, limiting hole, 16, limiting ball, 17, threaded sleeve, 18, limiting protrusion, 19, limiting groove, 20, reset groove, 21, limiting ring, 22, push slot, 23, push plate. DETAILED DESCRIPTION
[0025] The application will be further described below in detail with reference to the drawings. In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as a limitation on the present application.
[0026] Reference Figures 1-6 One embodiment shown is that the whole roller shutter door connecting structure is composed of multiple connecting units 1, such as in a specific roller shutter door application scenario, multiple connecting units 1 are sequentially connected end to end to form a connecting structure suitable for the size of the roller shutter door, the connecting plate 2 of each connecting unit 1 can be made of metal material (such as stainless steel), which is in the shape of a long strip, used to fix and connect the first connecting part 3 and the second connecting part 4 on both sides, playing a basic role of bearing and connecting, the fixed rod 5 of the first connecting part 3 is arranged along the length direction of the upper side of the connecting plate 2, the fixed holes 6 are symmetrically arranged inside the fixed rod 5, the size of the fixed holes 6 is matched with the connecting rod 7, so that the connecting rod 7 can smoothly slide therein, the fixed cylinder 8 of the second connecting part 4 is located at both ends of the connecting plate 2, the connecting rod 7 of the adjacent connecting unit 1 can be inserted therein for dismounting connection, the buckling assembly 9 is arranged inside the fixed cylinder 8, used to effectively fix the inserted connecting rod 7, ensuring the stability of the connection of adjacent connecting units 1, in this embodiment, each connecting unit 1 is connected through such a structure combination, realizing the connection between each other, forming a complete connecting structure system that can be applied to the roller shutter door, facilitating the assembly and cooperative work of each part of the roller shutter door.
[0027] The implementation principle of the above embodiment is that when assembling the roller shutter door connecting structure, the connecting rod 7 of one connecting unit 1 is aligned with the fixed cylinder 8 of the adjacent connecting unit 1 and inserted, since the connecting rod 7 inside the fixed hole 6 is slidable, it can smoothly enter the fixed cylinder 8, and then is fixed by the buckling assembly 9 inside the fixed cylinder 8, so that the adjacent connecting units 1 are tightly connected together to form a continuous connecting structure, such a connection relationship makes each part of the roller shutter door can be easily and quickly combined, compared with the traditional connection method, the use of complex connecting parts such as bolts is reduced, the assembly efficiency is improved, at the same time, the connection between each connecting unit 1 is tight, ensuring the stability of the whole structure of the roller shutter door in the use process, avoiding the problems such as loosening and disconnection due to loose connection affecting the normal lifting function of the roller shutter door.
[0028] Reference Figure 1 , Figure 2 , Figure 5One embodiment is shown as follows: In the above-mentioned connecting unit 1, taking a single fixing hole 6 as an example, the fixing hole 6 is a cylindrical space in which a fixing spring 10 is placed. One end is fixed to the bottom inner wall of the fixing hole 6 (by welding, snap-fitting or other suitable methods), and the other end is fixedly connected to one end of the corresponding connecting rod 7 (for example, by using hooks, riveting or other methods to ensure a firm connection). In the fixing rods 5 of the entire connecting unit 1, there are such fixing springs 10 in the fixing holes 6 on both sides, which are connected to their respective corresponding connecting rods 7. In this embodiment, the fixing spring 10 is in an appropriate state of compression and tension, which can not only allow the connecting rod 7 to have a certain amount of movement in the fixing hole 6, but also maintain a relatively stable position under normal conditions, and play a corresponding role in the assembly of the roller shutter door connecting structure and subsequent use.
[0029] The implementation principle of the above embodiment is as follows: When the connecting rod 7 is inserted into the fixed cylinder 8 of the adjacent connecting unit 1, the fixed spring 10 will be compressed or stretched according to the force. For example, during the connection, the connecting rod 7 is squeezed by the fixed spring 10 during the insertion of the fixed cylinder 8. The fixed spring 10 buffers the impact force of this insertion process through its own elastic deformation, making the insertion smoother.
[0030] Reference Figure 2 , Figure 3 One embodiment shown is as follows: the two ends of the fixing rod 5 are provided with fixing grooves 11 along its axial direction. The width and depth of the fixing grooves 11 match the size of the sliding buckle 12. The sliding buckle 12 is installed in the fixing grooves 11 and is connected to the connecting rod 7 by welding, riveting or other reliable fixing methods. At the same time, the sliding buckle 12 can slide freely in the fixing grooves 11 along the length direction of the fixing rod 5, and a part of the sliding buckle 12 will protrude from the opening of the fixing grooves 11. In this embodiment, when the fixing rod 5 is inserted into the fixing cylinder 8, the part of the sliding buckle 12 that protrudes from the fixing grooves 11 will contact the inner wall of the fixing cylinder 8, forming an additional contact constraint, which makes it convenient to retract the connecting rod 7 into the fixing hole 6 through the sliding buckle 12 during installation.
[0031] The implementation principle of the above embodiment is as follows: During the operation of the roller shutter door, when subjected to a large external impact or vibration, the fixed rod 5 may tend to twist. At this time, the sliding characteristics of the sliding buckle 12 in the fixed groove 11 will play a role. Due to the contact between the sliding buckle 12 and the inner wall of the fixed cylinder 8, when the fixed rod 5 twists, the sliding buckle 12 will effectively limit the twisting of the fixed rod 5, protect the connection part between the fixed rod 5 and the fixed cylinder 8, reduce the damage to the connection parts caused by the concentration of external forces, further enhance the stability and impact resistance of the connection structure, ensure that the roller shutter door can operate reliably in complex usage environments, and improve the safety and durability of the entire roller shutter door connection structure.
[0032] Reference Figure 5、 Figure 6 、 Figure 8 In the embodiment shown, inside the fixed cylinder 8, the fixed sleeve 13 is firmly fixed to the inner wall by welding, so as to ensure that it will not be loose or dislocated during use. The insertion hole 14 in the center of the fixed sleeve 13 coincides with the central axis of the fixed cylinder 8, and its diameter is slightly larger than the outer diameter of the connecting rod 7, so as to facilitate the insertion of the connecting rod 7. On the wall of the fixed sleeve 13, a plurality of limiting holes 15 (for example, 4 or 6, according to actual design requirements) are uniformly distributed, and a movable limiting ball 16 is placed in each limiting hole 15. The diameter of the limiting ball 16 is slightly smaller than the inner diameter of the limiting hole 15, so that it can freely roll within a certain range. The threaded sleeve 17 is sleeved outside the fixed sleeve 13 and is connected by threads. Rotating the threaded sleeve 17 can make it move along the axial direction of the fixed sleeve 13. The limiting protrusion 18 on the threaded sleeve 17 corresponds to the position of the limiting hole 15. When the threaded sleeve 17 rotates and moves, the limiting protrusion 18 can act on the limiting ball 16. The connecting rod 7 is provided with a limiting groove 19 corresponding to the position of the limiting ball 16. The reset groove 20 is located on the threaded sleeve 17. In this embodiment, each component is in the initial state of being not connected or being connected. Through subsequent operations, the connecting rod 7 can be fixed or loosened.
[0033] The implementation principle of the above embodiment is as follows: after the connecting rod 7 is inserted into the insertion hole 14 of the fixed sleeve 13 in the fixed cylinder 8, the threaded sleeve 17 is rotated and moved along the axial direction of the fixed sleeve 13. The limiting protrusion 18 gradually presses the limiting ball 16 and moves the limiting ball 16 to the direction of the connecting rod 7, and finally the limiting ball 16 is inserted into the limiting groove 19 of the connecting rod 7, so as to fix the connecting rod 7, that is, to firmly fix the adjacent connecting units 1 together. When disassembly is needed, the threaded sleeve 17 is rotated in the opposite direction. Through the movement of the threaded sleeve 17 and the cooperation of the reset groove 20 and other structures (the reset groove 20 can provide a certain movement space and reset guide for the related components during disassembly), the connecting rod 7 can be smoothly pulled out, and at the same time, the limiting ball 16 is withdrawn from the limiting groove 19, so as to facilitate the disassembly, maintenance and other operations of the connecting unit 1. The design of such a buckling assembly 9 makes the connection and disassembly of the connecting structure more convenient and reliable, effectively ensures the good performance of the roller shutter door connecting structure in the stages of installation, use and maintenance, and improves the overall practicality and operability.
[0034] Referring to Figure 8One embodiment shown is as follows: In each limiting hole 15 of the fixing sleeve 13, near the insertion hole 14, there is an annular limiting ring 21. The limiting ring 21 can be fixed to the inner wall of the limiting hole 15 by means of inlay, welding or other methods. The inner diameter of the limiting ring 21 is smaller than the diameter of the limiting ball 16, so that when the limiting ball 16 is subjected to external force and moves towards the limiting groove 19, it will be blocked by the limiting ring 21 and cannot fully enter the limiting groove 19. In this embodiment, the limiting ring 21 is in a suitable position and plays an effective limiting role for the limiting ball 16, ensuring the normal operation of the fastening assembly 9.
[0035] The implementation principle of the above embodiment is as follows: During the operation of the fastening assembly 9, when the threaded sleeve 17 pushes the limiting ball 16 to move towards the connecting rod 7 to achieve fixation, the limiting ring 21 prevents the limiting ball 16 from entering the insertion hole 14 due to excessive force, which would affect the insertion and removal operation of the connecting rod 7. This ensures that the limiting ball 16 can move accurately within the limiting hole 15 according to the design requirements, thereby ensuring that it can be smoothly inserted into the limiting groove 19 when fixation is required and can be normally withdrawn when disassembly is required. This maintains the normal realization of the fastening assembly 9's function of fixing and loosening the connecting rod 7, and ensures the reliability and stability of the connection and disassembly of the entire roller shutter door connection structure.
[0036] Reference Figure 3 , Figure 6 One embodiment is shown as follows: an actuating groove 22 is provided on the outer side of the wall of the fixed cylinder 8 along its axial direction. Several actuating plates 23 (e.g., 2 or 3) are evenly and fixedly distributed on the outer side of the threaded sleeve 17. The actuating plates 23 protrude from the surface of the threaded sleeve 17 at a certain height and cooperate with the actuating groove 22. The actuating plates 23 are always located inside the fixed cylinder 8 during use. In this embodiment, the operator can use a tool to insert into the actuating groove 22 and actuate the actuating plates 23 inside it to rotate the threaded sleeve 17, which facilitates the operation of the fastening assembly 9.
[0037] The implementation principle of the above embodiment is as follows: When it is necessary to operate the fastening component 9 to fix or loosen the connecting rod 7, the operator uses a tool to insert into the actuating groove 22, which acts on the actuating plate 23. By rotating the actuating plate 23, the threaded sleeve 17 is rotated. This design makes it convenient for the operator to easily rotate the threaded sleeve 17 when actually installing, disassembling and maintaining the roller shutter door connection structure. There is no need for complicated tools and cumbersome operation steps, which improves the convenience and efficiency of operation. In turn, the connection, disassembly and other related operations of the entire roller shutter door connection structure can be completed quickly and accurately during use, ensuring the normal assembly, maintenance and use of the roller shutter door.
[0038] The working principle of the device is: in the assembly process of the roller shutter door, first, the connecting rod 7 of the first connecting part 3 of a connecting unit 1 is aligned with the fixed cylinder 8 of the second connecting part 4 of the adjacent connecting unit 1, because the fixed compression spring 10 in the fixed hole 6 has a certain elasticity, the connecting rod 7 can slide relatively in the fixed hole 6, so that the connecting rod 7 can be more smoothly inserted into the fixed sleeve 13 insertion hole 14 in the fixed cylinder 8, at this time, the fixed compression spring 10 is compressed, and a certain elastic potential energy is stored, which not only buffers the impact force during insertion, but also provides a certain pre-tightening force for subsequent connection and fixation, ensuring the tightness and stability of the connection.
[0039] When the connecting rod 7 is completely inserted into the fixed cylinder 8, the threaded sleeve 17 is rotated through the push slot 22 on the fixed cylinder 8, and the limiting protrusion 18 on the threaded sleeve 17 moves with the rotation of the threaded sleeve 17, because the limiting protrusion 18 is in contact with the limiting ball 16 in the limiting hole 15 on the fixed sleeve 13, the limiting ball 16 rolls in the direction of the connecting rod 7 under the push of the limiting protrusion 18, because the limiting hole 15 on the fixed sleeve 13 is blocked by the limiting ring 21 on the side close to the insertion hole 14, the limiting ball 16 is inserted into the limiting slot 19 on the connecting rod 7, thereby achieving firm fixation of the connecting rod 7, and the two adjacent connecting units 1 are tightly connected together, by repeatedly the above operation, the plurality of connecting units 1 are connected end to end, and finally a complete roller shutter door connection structure is formed, ensuring that each part of the roller shutter door can work cooperatively and stably.
[0040] When it is necessary to maintain or replace parts of the roller shutter door, the connecting structure needs to be disassembled, the threaded sleeve 17 is rotated in the opposite direction, and the limiting protrusion 18 gradually moves away from the limiting ball 16 as the threaded sleeve 17 moves in the opposite direction, the limiting ball 16 in the limiting hole 15 on the fixed sleeve 13 exits the limiting hole 15 together with the connecting rod 7 after losing the extrusion of the limiting protrusion 18, thereby the connecting unit 1 can be quickly disassembled, and the operator can conveniently check, repair or replace each part of the roller shutter door, and after completion, the connecting units 1 are reconnected according to the above assembly steps to restore the roller shutter door to a normal use state.
[0041] The working principle of the device has been described in the above embodiments, the above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.
Claims
1. A roller shutter door connection structure, comprising a plurality of connection units (1) connected end-to-end in sequence, characterized in that: Each connecting unit (1) includes a connecting plate (2) and a first connecting part (3) and a second connecting part (4) connected to both sides of the connecting plate (2). The first connecting part (3) is located on the upper side of the connecting plate (2). The first connecting part (3) includes a fixing rod (5). Fixing holes (6) are respectively opened on both sides of the fixing rod (5). A sliding connecting rod (7) is provided in the fixing hole (6). The second connecting part (4) includes a fixing cylinder (8) located at both ends of the connecting plate (2). The fixing cylinder (8) can be connected to the connecting rod (7) on its adjacent connecting unit (1). A fastening component (9) is provided in the fixing cylinder (8) to fix the connecting rod (7).
2. The roller shutter door connection structure according to claim 1, characterized in that: Each of the fixing holes (6) is provided with a fixing spring (10), and the fixing spring (10) is fixedly connected to the connecting rod (7) on its corresponding side.
3. The roller shutter door connection structure according to claim 1, characterized in that: The fixing rod (5) has fixing grooves (11) at both ends that communicate with the fixing hole (6). A sliding buckle (12) is provided in the fixing groove (11), and the sliding buckle (12) is fixedly connected to the connecting rod (7) on its corresponding side.
4. The roller shutter door connection structure according to claim 1, characterized in that: The fastening assembly (9) includes a fixed sleeve (13), which is fixedly connected to the fixed cylinder (8). The fixed sleeve (13) has an insertion hole (14) and several limiting holes (15) evenly distributed around its circumference. Each limiting hole (15) has a movable limiting ball (16). The outer side of the fixed sleeve (13) is threadedly connected to a threaded sleeve (17). The threaded sleeve (17) has a limiting protrusion (18). When the threaded sleeve (17) moves on the fixed sleeve (13), it can drive the limiting protrusion (18) to push the limiting ball (16). The connecting rod (7) has a limiting groove (19). The limiting ball (16) can be inserted into the limiting groove (19). The threaded sleeve (17) has a reset groove (20).
5. The roller shutter door connection structure according to claim 4, characterized in that: A limiting ring (21) is provided on the side of the limiting hole (15) near the insertion hole (14) to limit the sliding ball.
6. The roller shutter door connection structure according to claim 4, characterized in that: The fixed cylinder (8) is provided with a toggle groove (22), and a number of toggle plates (23) are provided on the outside of the threaded sleeve (17). The threaded sleeve (17) is located in the toggle groove (22).