Walking roller structure of flap gate

Abstract

The walking roller structure of the flap door comprises a door plate body and a roller, the roller comprises an upper rotating wheel and a lower rotating wheel, and an installation mechanism is arranged between the door plate body and the roller. The mounting mechanism comprises a mounting base, a mounting hole and a rotating shaft; the mounting hole is formed in the mounting base, and the rotating shaft is inserted into the mounting base through the mounting hole; one end of the rotating shaft is fixedly connected with the lower rotating wheel, and the upper rotating wheel is clamped with the lower rotating wheel; one end of the upper rotating wheel close to the wall is provided with balls; after installation is completed, the balls abut against the wall face. One end, close to the wall surface, of the roller is designed to be abutted against the wall surface, sliding friction is converted into rolling friction, friction force is greatly reduced, abrasion of parts is effectively reduced, the service life of the flap door is remarkably prolonged, and the working efficiency of the flap door is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of flip-up door technology, specifically to a walking roller structure for a flip-up door. Background Technology

[0002] In factory and garage settings, factory gates and sectional garage doors are commonly used for opening and closing. Compared to ordinary double doors, these doors are advantageous because they are concealed during opening and closing, reducing space usage. Their structure consists of door panels connected by fixed guide rails. Rollers are mounted on the sides of the door panels, and opening and closing are achieved by the movement of these guide wheels along the rails. Various opening modes are available, including vertical lifting and sectional opening. However, existing rollers have drawbacks. They are noisy when sliding along the guide rails, and the frequent opening and closing of factory gates and sectional garage doors causes significant noise pollution that seriously disturbs nearby residents. Furthermore, the rollers have a short lifespan and require frequent replacement, affecting normal door use, increasing maintenance costs and workload, and reducing ease of use and efficiency.

[0003] Chinese patent (authorization announcement number CN220365456U) discloses a silent roller. The roller is sleeved on a guide wheel shaft, and its outer circumferential annular groove matches a raised annular rubber silent ring. The mounting holes on the upper and lower ends mate with the axial protrusions at both ends of the rubber silent ring, and the limiting steps in the mounting holes limit the movement of the protrusions. The guide wheel shaft includes a guide shaft and a bearing, with the roller sleeved on the outside of the bearing. Part of the guide shaft is a galvanized iron rod, or an iron rod wrapped with plastic nylon material and integrally formed. During operation, the roller sleeved with the rubber silent ring contacts the guide rail. Due to the elasticity, vibration damping, and wear resistance of the TPU material, the roller effectively reduces noise and extends its service life when rolling. One end of the guide shaft is assembled inside the door, and the roller sleeve protects the bearing, working together to achieve stable and low-noise rolling operation. However, during the operation of the flip door, the side of the roller will rub against the wall, resulting in a short roller life and high noise.

[0004] Therefore, the rollers need to be improved to reduce wear on the rollers during the operation of the flip-up door, thereby extending the service life of the rollers. Utility Model Content

[0005] To address the aforementioned issues, a roller structure for a flip-up door is provided. By installing ball bearings on the upper rotating wheel, the ball bearings abut against the wall during the flip-up door's operation, changing the original sliding friction into rolling friction with lower wear. This makes the flip-up door's operation more stable and solves the problem of short roller lifespan and high noise caused by friction between the roller side and the wall during the flip-up door's operation.

[0006] To address the problems of existing technologies, this utility model provides a roller structure for a flip-up door, comprising a door panel body and rollers. The rollers include an upper rotating wheel and a lower rotating wheel, and an installation mechanism is provided between the door panel body and the rollers. The installation mechanism includes a mounting base, a mounting hole, and a rotating shaft. The mounting hole is formed on the mounting base, and the rotating shaft is inserted into the mounting base through the mounting hole. One end of the rotating shaft is fixedly connected to the lower rotating wheel, and the upper rotating wheel engages with the lower rotating wheel. A ball bearing is installed on the end of the upper rotating wheel near the wall. After installation, the ball bearing is in contact with the wall.

[0007] Preferably, the lower rotating wheel is provided with a placement groove; an annular rubber sound-dampening ring is provided in the placement groove, and the roller abuts against a moving track; when the flip door moves, the annular rubber sound-dampening ring abuts against the moving track. Preferably, a first return spring is sleeved on the rotating shaft.

[0008] Preferably, the mounting base and the door panel body are provided with threaded holes, and the mounting base and the door panel body are tightly connected by bolts.

[0009] Preferably, an anti-detachment mechanism is provided between the rotating shaft and the mounting base; the anti-detachment mechanism includes a socket and an anti-detachment block; the socket is located at the end of the rotating shaft away from the lower rotating wheel; the anti-detachment block is inserted into the rotating shaft through the socket; a locking groove is provided in the socket, and a locking block is provided on the anti-detachment block; when the locking block and the locking groove are engaged, the anti-detachment block engages with the rotating shaft, preventing the rotating shaft from coming out of the mounting hole.

[0010] Preferably, the latching block includes a first latching block and a second latching block; a guide rod is provided on the latching block, and guide holes are provided on the first latching block and the second latching block; the guide rod passes through the guide holes and is inserted into the first latching block and the second latching block, and a second return spring is sleeved on the guide rod.

[0011] Preferably, the first and second locking blocks are provided with limiting blocks; the locking block is provided with a limiting groove, and the first and second locking blocks move along the limiting groove through the limiting blocks.

[0012] Preferably, the first and second card blocks are provided with a lever for operation by the operator.

[0013] The advantages of this utility model compared to the prior art are:

[0014] 1. This utility model designs the end of the roller closest to the wall as a ball bearing that abuts against the wall, transforming sliding friction into rolling friction, which greatly reduces friction, effectively reduces component wear, significantly improves the service life and working efficiency of the flip door, and solves the problem of large wear and short service life of the roller side caused by long-term sliding friction in the prior art.

[0015] 2. This utility model has an annular rubber silent ring set in the lower rotating wheel placement groove to abut against the moving track. By relying on the elastic deformation characteristics of rubber, it buffers the impact and vibration, greatly reduces collision noise, ensures smooth operation of the roller, improves the stability and quietness of the flip door operation, reduces component wear and extends the overall life of the equipment. It has outstanding advantages in noise-sensitive places and improves the situation of high operating noise in the existing technology.

[0016] 3. This utility model has a first return spring sleeved on the rotating shaft. When the roller is displaced due to external impact or jamming, it can store energy to return to its original position, maintain the stability and straightness of the flip door operation, prevent the door panel from shaking and derailing due to roller deviation, effectively ensure the normal operation and service life of the flip door, and overcome the defects of the existing technology that lack a mechanism to deal with unexpected roller displacement. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the traveling roller structure of a flip-up door according to this utility model.

[0018] Figure 2 This is a three-dimensional schematic diagram of the installation mechanism of the traveling roller structure of a flip-up door according to this utility model.

[0019] Figure 3 This is an exploded view of the installation mechanism of the traveling roller structure of a flip-up door according to this utility model.

[0020] Figure 4 This is a front view of the mounting mechanism of the traveling roller structure of a flip-up door according to this utility model.

[0021] Figure 5 This is an exploded view of the roller structure of a sliding roller structure for a flip-up door according to this utility model.

[0022] Figure 6 This is a three-dimensional schematic diagram of the anti-detachment mechanism of the walking roller structure of a flip-up door according to this utility model.

[0023] Figure 7 This is an exploded view of the anti-detachment block of the walking roller structure of a flip-up door according to this utility model.

[0024] The diagram is labeled as follows: 1. Mounting mechanism; 11. Mounting base; 12. Mounting hole; 13. Rotating shaft; 14. Lower rotating wheel; 15. Upper rotating wheel; 151. Ball bearing; 16. Placement groove; 17. Annular rubber silent ring; 2. First return spring; 3. Anti-detachment mechanism; 31. Insertion hole; 32. Anti-detachment block; 33. Snap-fit ​​block; 331. First snap-fit ​​block; 332. Second snap-fit ​​block; 34. Guide rod; 35. Guide hole; 36. Second return spring; 4. Limiting mechanism; 41. Limiting block; 42. Limiting groove; 5. Actuating block. Detailed Implementation

[0025] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0026] Reference Figures 1-7 As shown: A roller structure for a flip-up door includes a door panel body and rollers. The rollers include an upper rotating wheel 15 and a lower rotating wheel 14. An installation mechanism 1 is provided between the door panel body and the rollers. The installation mechanism 1 includes a mounting base 11, a mounting hole 12, and a rotating shaft 13. The mounting hole 12 is formed on the mounting base 11, and the rotating shaft 13 is inserted into the mounting base 11 through the mounting hole 12. One end of the rotating shaft 13 is fixedly connected to the lower rotating wheel 14, and the upper rotating wheel 15 is engaged with the lower rotating wheel 14. A ball bearing 151 is installed on the end of the upper rotating wheel 15 near the wall. After installation, the ball bearing 151 is in contact with the wall.

[0027] In existing technology, the end of the roller closest to the wall is in an abutting state, which causes significant wear on the side of the roller during long-term operation, resulting in a short service life. To address this issue, in the roller structure of the flip door, the door panel body is connected to the roller via a mounting mechanism 1. Mounting holes 12 on the mounting base 11 are used to insert a rotating shaft 13. One end of the rotating shaft 13 is fixed to a lower rotating wheel 14, and an upper rotating wheel 15 engages with the lower rotating wheel 14 to achieve linkage. After installation, the ball bearing 151 at the wall-facing end of the upper rotating wheel 15 abuts against the wall. When the flip door moves, the door panel body moves the mounting base 11, causing the rotating shaft 13 to rotate, which in turn drives the lower rotating wheel 14 to rotate. The upper rotating wheel 15 rotates synchronously, and the ball bearing 151 rolls on the wall, converting sliding friction into rolling friction, greatly reducing friction and ensuring smooth operation of the roller structure. This allows the flip door to open or close smoothly along the wall, effectively reducing component wear and improving the service life and working efficiency of the flip door.

[0028] Reference Figure 5 and Figure 6 As shown: The lower rotating wheel 14 is provided with a placement groove 16; the placement groove 16 is provided with an annular rubber sound-dampening ring 17, and the roller abuts against the moving track; when the flip door moves, the annular rubber sound-dampening ring 17 abuts against the moving track.

[0029] In the roller structure of the flip-up door, an annular rubber sound-dampening ring 17 is installed in the placement groove 16 of the lower rotating wheel 14, and the roller abuts against the moving track. When the flip-up door moves, the door panel body drives the roller to roll along the moving track, and the lower rotating wheel 14 rotates accordingly. The annular rubber sound-dampening ring 17 in the placement groove 16 abuts against the moving track. Utilizing the elastic deformation characteristics of rubber, the annular rubber sound-dampening ring 17 effectively buffers the impact and vibration between the roller and the track, significantly reducing noise generated by collisions. It also ensures smooth roller operation, improves the stability and quietness of the flip-up door operation, optimizes the user experience, reduces component wear, and extends the overall lifespan of the equipment, offering significant advantages in noise-sensitive locations.

[0030] Reference Figure 6 As shown: A first return spring 2 is sleeved on the rotating shaft 13.

[0031] When the flip door encounters an external impact or unexpected jamming during opening or closing, causing the rollers to shift, the first return spring 2 deforms and stores energy according to its elastic properties. After the external force disappears, the spring releases the stored energy, generating a restoring force to push the rotating shaft 13 back to its original position. This, in turn, returns the lower rotating wheel 14 connected to the rotating shaft 13 and the upper rotating wheel 15 engaged with it to their correct positions. This ensures that the roller structure is accurately restored to its original position, maintains the stability and straightness of the flip door's operation, and prevents the risk of door panel shaking or derailment caused by roller displacement due to impact or jamming. This effectively guarantees the normal operation and service life of the flip door.

[0032] Reference Figure 1 As shown: The mounting base 11 and the door panel body are provided with threaded holes, and the mounting base 11 and the door panel body are tightly connected by bolts.

[0033] The tightening effect of the bolts strictly limits the relative displacement between the mounting base 11 and the door panel body, maintains the constant relative position between the roller and the door panel, and ensures that the flip door opens and closes smoothly and the roller rolls precisely along the track.

[0034] Reference Figures 1-7 As shown: An anti-detachment mechanism 3 is provided between the rotating shaft 13 and the mounting base 11; the anti-detachment mechanism 3 includes a socket 31 and an anti-detachment block 32; the socket 31 is located at the end of the rotating shaft 13 away from the lower rotating wheel 14; the anti-detachment block 32 is inserted into the rotating shaft 13 through the socket 31; a snap-fit ​​groove is provided in the socket 31, and a snap-fit ​​block 33 is provided on the anti-detachment block 32; when the snap-fit ​​block 33 and the snap-fit ​​groove snap together, the anti-detachment block 32 snaps together with the rotating shaft 13, preventing the rotating shaft 13 from coming out of the mounting hole 12.

[0035] During installation, the rotating shaft 13 is inserted into the mounting hole 12 of the mounting base 11, and then the anti-detachment block 32 is inserted into the insertion hole 31, so that the locking block 33 engages with the locking groove. In this way, the anti-detachment block 32 is firmly engaged with the rotating shaft 13, preventing the rotating shaft 13 from coming out of the mounting hole 12. Frequent opening and closing of the flip door causes the rollers to vibrate violently and experience complex and variable forces. The anti-detachment mechanism 3, with its reliable locking structure, ensures that the rotating shaft 13 is in a stable position, ensuring a reliable connection between the rollers, rotating shaft 13, and mounting base 11. It maintains the integrity and stability of the traveling roller structure, effectively resists external impacts and vibration interference, and prevents roller failure and flip door malfunction caused by the rotating shaft 13 coming out, thus ensuring the safe, reliable, and durable operation of the flip door.

[0036] Reference Figure 7 As shown: The latching block 33 includes a first latching block 331 and a second latching block 332; a guide rod 34 is provided on the latching block 33, and guide holes 35 are opened on the first latching block 331 and the second latching block 332; the guide rod 34 passes through the guide holes 35 and is inserted into the first latching block 33 and the second latching block 33, and a second reset spring 36 is sleeved on the guide rod 34.

[0037] During installation, pressing the first locking block 331 and the second locking block 332 compresses the second return spring 36, allowing the locking block 33 to be smoothly inserted into the insertion hole 31 of the rotating shaft 13. After releasing, the spring rebounds and pushes the first locking block 331 and the second locking block 332 to reset, and the locking block 33 snaps into the locking groove to complete the anti-disengagement treatment of the rotating shaft 13.

[0038] Reference Figure 7 As shown: a limiting block 41 is provided on the first locking block 331 and the second locking block 332; a limiting groove 42 is provided on the locking block 33, and the first locking block 331 and the second locking block 332 move along the limiting groove 42 through the limiting block 41.

[0039] The cooperation of the limiting block 41 and the limiting groove 42 can effectively prevent the first locking block 331 and the second locking block 332 from rotating around the guide rod 34.

[0040] Reference Figure 7 As shown: The first card block 331 and the second card block 332 are provided with a toggle block 5 for operation by the operator.

[0041] The operator holds the actuating block 5 with their finger and applies pressure to make the first locking block 331 and the second locking block 332 move towards each other against the elastic force of the second return spring 36. The guide rod 34 slides within the guide hole 35, and the distance between the first locking block 331 and the second locking block 332 decreases. The locking block 33 inserts into the insertion hole 31 of the rotating shaft 13. Releasing the actuating block 5 causes the spring to return and push the first locking block 331 and the second locking block 332 back into the locking groove. When repairing or replacing the rollers, the operator operates the actuating block 5 to disengage the locking block 33 from the locking groove and pull out the rotating shaft 13. This actuating block 5 provides the operator with a point of force and operational convenience, precisely controls the movement of the locking blocks, improves the efficiency and accuracy of installation and maintenance, ensures the correct operation of the anti-detachment mechanism 3, and guarantees the normal function of the traveling roller structure and the stable operation of the flip door.

[0042] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A roller structure for a flip-up door, comprising a door panel body and rollers, characterized in that: The roller is formed by the engagement of an upper rotating wheel (15) and a lower rotating wheel (14). The roller is located at the four corners of the door panel body. An installation mechanism (1) is provided between the door panel body and the roller. The mounting mechanism (1) includes a mounting base (11), a mounting hole (12), and a rotating shaft (13); The mounting hole (12) is provided on the mounting base (11), and the rotating shaft (13) is inserted into the mounting base (11) through the mounting hole (12); One end of the rotating shaft (13) is fixedly connected to the lower rotating wheel (14), and the upper rotating wheel (15) is engaged with the lower rotating wheel (14); A ball bearing (151) is installed at the end of the upper rotating wheel (15) near the wall; After installation, the ball bearing (151) is in contact with the wall.

2. The traveling roller structure of a flip-up door according to claim 1, characterized in that, The opening surface of the lower rotating wheel (14) is provided with a placement groove (16); An annular rubber sound-dampening ring (17) is provided in the placement groove (16); When the flip door moves, the annular rubber silent ring (17) comes into contact with the moving track.

3. The traveling roller structure of a flip-up door according to claim 1, characterized in that, A first return spring (2) is sleeved on the rotating shaft (13).

4. The traveling roller structure of a flip-up door according to claim 1, characterized in that, The mounting base (11) and the door panel body are provided with threaded holes, and the operator can fasten the mounting base (11) to the door panel body with bolts.

5. The traveling roller structure of a flip-up door according to claim 1, characterized in that, An anti-detachment mechanism (3) is provided between the rotating shaft (13) and the mounting base (11); The anti-detachment mechanism (3) includes an insertion hole (31) and an anti-detachment block (32); The insertion hole (31) is located at the end of the rotating shaft (13) away from the lower rotating wheel (14); The anti-detachment block (32) is connected to the rotating shaft (13) through the insertion hole (31); A snap-fit ​​groove is provided inside the socket (31), and a snap-fit ​​block (33) is provided on the anti-disengagement block (32); When the snap-fit ​​block (33) and the snap-fit ​​groove snap together, the anti-detachment block (32) snaps together with the rotating shaft (13) to prevent the rotating shaft (13) from coming out of the mounting hole (12).

6. The traveling roller structure of a flip-up door according to claim 5, characterized in that, The latching block (33) includes a first latching block (331) and a second latching block (332); The snap-fit ​​block (33) is provided with a guide rod (34), and the first snap-fit ​​block (331) and the second snap-fit ​​block (332) are provided with guide holes (35); The guide rod (34) is connected to the first locking block (331) and the second locking block (332) through the guide hole (35), and a second return spring (36) is sleeved on the guide rod (34).

7. The traveling roller structure of a flip-up door according to claim 6, characterized in that, Limiting blocks (41) are provided on the first card block (331) and the second card block (332); The locking block (33) is provided with a limiting groove (42), and the first locking block (331) and the second locking block (332) move along the limiting groove (42) through the limiting block (41).

8. The traveling roller structure of a flip-up door according to claim 6, characterized in that, The first card block (331) and the second card block (332) are provided with a toggle block (5) for operation by the operator.

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