Damped slow descent handrail

Abstract

The utility model provides a kind of damping slow descent handrail, including base, pivot, damper, rotating seat and cover body and the like component.Pivot is rotatably connected with base, inside is equipped with two dampers, its shell and pivot synchronous rotation, rely on damping effect to realize handrail steady slow descent.Rotating seat is fixedly connected with pivot and synchronous rotation with it, limiting structure ensures that handrail is accurately in place when being retracted and being deployed.Wear-resistant part reduces friction, prolongs service life.The utility model improves overall strength by optimizing structure design, simplifies assembly process, is applicable to a variety of scenes, with the advantages of high safety, strong durability and convenient operation.

Description

Technical Field

[0001] This utility model relates to a damped, slow-descent handrail. Background Technology

[0002] In modern furniture and public facility design, swivel handrails are widely used due to their flexibility and space-saving features. However, existing swivel handrails present significant technical problems that urgently need to be addressed. When commonly swivel handrails are rotated downwards to the desired position, they are typically in a free-falling state. Since handrails are generally made of metal and have considerable weight, they are highly susceptible to significant impact forces from rapid descent without intervention or control. Such impacts can not only damage the handrail's limiting structure but also pose safety hazards, especially in public places or homes.

[0003] Currently, to address the aforementioned issues, some rotatable handrails are being equipped with damping structures to achieve a slow-descent function. However, existing damping structures have significant shortcomings. For example, some designs directly fix the damper's housing to the handrail, while the damper's pivot is connected to a corresponding swivel. Although this achieves a slow-descent effect, the single-sided fixing structure results in poor overall structural strength, making it difficult to withstand large lateral thrusts and prone to deformation or damage to the base. Furthermore, another common design uses springs to achieve a slow-descent function, but when the handrail retracts, the spring's rebound force is significant, easily impacting the base and further exacerbating structural instability and shortening its lifespan.

[0004] Therefore, the main problems with current technology include: lack of effective cushioning control during the handrail's descent, insufficient strength of existing damping structures, and impact issues caused by excessive spring rebound force. These problems not only affect the user experience of the handrail but may also lead to frequent maintenance and replacement of the equipment, increasing user costs. Summary of the Invention

[0005] This utility model discloses a damped, slow-descent handrail, which aims to solve the problems mentioned above.

[0006] The present invention adopts the following solution:

[0007] A damped, gently sloping handrail includes a base and a handrail. The base is configured to be fixed to a mounting surface, and the handrail is rotatably connected to the base. It further includes: a pivot shaft configured to rotate relative to the base; a damper disposed within the pivot shaft, the damper's housing being radially fixedly connected to the pivot shaft, and the damper's rotating rod being fixedly connected to the base so that the damper's housing can rotate relative to the base; and a rotating seat configured to be fixedly connected to the pivot shaft and rotatable relative to the base, with the handrail connected to the rotating seat.

[0008] In this embodiment of the invention, two dampers are disposed inside the rotating shaft, and the two dampers are disposed at both ends of the rotating shaft along the axial direction.

[0009] In this embodiment of the invention, the rotating shaft is configured to be fitted onto the inner circumference of the rotating seat. The inner circumferential wall of the rotating seat is provided with a first keyway, and the outer circumferential wall of the rotating shaft is provided with a first rib. The first rib is configured to connect with the first keyway to achieve synchronous rotation of the rotating shaft and the rotating seat. The outer circumferential wall of the damper's outer shell is provided with a second rib, and the inner circumferential wall of the rotating shaft is provided with a second keyway. The second rib is configured to connect with the second keyway to achieve synchronous rotation of the rotating shaft and the damper's outer shell.

[0010] In this embodiment of the utility model, a cover that can be fixed on the base is also included. The cover is provided with a connecting hole, and the rotating rod of the damper can be inserted into the connecting hole. The rotating rod of the damper is configured to not rotate relative to the base.

[0011] In this embodiment of the utility model, the base is provided with a pair of outwardly protruding fixing plates, the fixing plates are provided with through holes, the two ends of the rotating shaft are configured to be inserted into the through holes, the rotating seat is configured to be located between the two fixing plates, and the cover is configured to be fixed on the outer side wall of the fixing plates.

[0012] In this embodiment of the utility model, a wear-resistant component is also included. The wear-resistant component includes a connecting ring, which is configured to be sleeved on the outer periphery of the rotating shaft. The outer peripheral wall of the connecting ring is fitted to be adapted to connect with the inner peripheral wall of the perforation and / or the cover.

[0013] In this embodiment of the utility model, the wear-resistant component further includes a connecting piece, which is disposed on the outer end face of the connecting ring. The outer end face of the connecting piece is configured to abut against the bottom surface inside the cover, and the inner end face of the connecting piece is configured to abut against the outer end face of the rotating shaft and / or the damper housing.

[0014] In this embodiment of the utility model, the rotating rod of the damper passes through the hole on the connecting piece and is connected to the connecting hole of the cover. The hole shape of the connecting hole and the cross-section of the rotating rod of the damper are non-circular so that the rotating rod does not rotate relative to the other side after being inserted into the connecting hole. The cover is fixed together with the fixing piece by the locking member.

[0015] In this embodiment of the utility model, a limiting block is provided on the rotating seat, and a limiting rod is provided at the front end of the two fixed plates. When the handrail is retracted, the limiting block can abut against the limiting rod. An abutting surface is provided on the base. When the handrail is unfolded, the limiting block can abut against the abutting surface.

[0016] In this embodiment of the utility model, the base is provided with an inwardly recessed groove, and the upper sidewall of the groove can be configured to form the abutment surface; and / or: the base is provided with a baffle, and the lower end surface of the baffle can be configured to form the abutment surface; when the armrest is unfolded, the limiting block can abut against the upper sidewall of the groove and / or the lower end surface of the baffle.

[0017] This utility model provides a damped, slow-closing handrail with the following advantages: Through the damping action of the damper, the handrail achieves a smooth, slow descent during rotation, avoiding the impact force generated by free fall and thus reducing safety hazards. Specifically, since the pivot is the main load-bearing component, the damper does not directly bear the weight, improving the overall structural strength. Furthermore, the side-assembly design of the pivot, cover, and other components simplifies the assembly process and reduces production costs. In addition, the wear-resistant design reduces friction and wear, extending the service life of the device. Finally, the limiting structure design ensures that the handrail accurately positions itself when retracting and unfolding, preventing excessive rotation and improving reliability. This allows the handrail structure to be widely used in areas such as toilets. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the handrail unfolded in an embodiment of this utility model.

[0020] Figure 2 This is an exploded view of an embodiment of the present invention (excluding the handrail).

[0021] Figure 3 This is a cross-sectional view of the handrail in an embodiment of the present invention when it is unfolded. Figure 1 .

[0022] Figure 4 This is a cross-sectional view of the handrail in an embodiment of the present invention when it is unfolded. Figure 2 .

[0023] Figure 5 This is a cross-sectional view of the handrail in an embodiment of this utility model when it is folded up. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments.

[0025] Referring to the accompanying drawings, the handrail 1 is connected to the base 2 via a rotating seat 5. The base 2 is fixed to the mounting surface (such as a wall) to support the entire device. The rotating seat and handrail are fixedly connected. The base 2 has a pair of outwardly protruding fixing plates 11, each with a through hole 12 for insertion into both ends of the rotating shaft 3. Preferably, the axial length of the rotation is greater than the distance between the two fixing plates, while the length of the rotating seat portion fitted onto the rotating shaft is less than the distance between the two fixing plates. The base 2 also has an inwardly recessed groove 18 and / or a baffle 19. The upper sidewall of the groove 18 and / or the lower surface of the baffle 19 form an abutment surface 10 to limit the position of the handrail 1 when unfolded, preventing it from continuing to tilt downwards. Furthermore, the base 2 has a limiting rod 9 that cooperates with the limiting block 8 on the rotating seat 5 to constrain the upward rotation range of the handrail 1, preventing it from hitting the mounting surface. This design ensures that the handrail 1 accurately positions itself when folded up and unfolded, avoiding safety hazards caused by excessive rotation.

[0026] The rotating shaft 3, as the main load-bearing component, has its two ends inserted into the through holes 12 of the fixing plate 11 of the base 2. Two dampers 4 are installed inside the rotating shaft 3, located at its axial ends respectively. A first rib 13 is provided on the outer peripheral wall of the rotating shaft 3, connecting to the first keyway 22 on the inner peripheral wall of the rotating seat 5, enabling synchronous rotation of the rotating shaft 3 and the rotating seat 5. Furthermore, a second keyway 14 is provided on the inner peripheral wall of the rotating shaft 3, connecting to the second rib 23 on the outer peripheral wall of the damper 4 housing 20, enabling synchronous rotation of the rotating shaft 3 and the damper 4 housing 20. The design of the rotating shaft 3 allows it to bear most of the weight, while the dampers 4 do not directly bear the weight, thus improving the overall structural strength.

[0027] The damper 4 is housed inside the rotating shaft 3, and its outer casing 20 is radially fixed to the rotating shaft 3, meaning the two rotate synchronously. The rotating rod 21 of the damper 4 passes through the hole on the connecting piece 17 and connects to the connecting hole 15 of the cover 6. The cross-sections of the connecting hole 15 and the rotating rod 21 are non-circular to prevent relative rotation; they are polygonal or elliptical, for example. The function of the damper 4 is to generate a damping effect through the rotation of its outer casing 20, thereby slowing down the rotation speed of the handrail 1 and preventing the impact force generated by free fall.

[0028] The rotating base 5 is configured to be fixedly connected to the rotating shaft 3 and rotates relative to the base 2 with the rotating shaft 3. A first keyway 22 is provided on the inner peripheral wall of the rotating base 5, which connects to the first rib 13 on the outer peripheral wall of the rotating shaft 3 to achieve synchronous rotation. A limit block 8 is provided on the rotating base 5 to cooperate with the limit rod 9 or the abutment surface 10 on the base 2 to limit the rotation range of the handrail 1. The design of the limit block 8 ensures that the handrail 1 can accurately reach its position when retracted and extended, avoiding excessive rotation. The design of the rotating base 5 allows the handrail 1 to rotate smoothly while reducing the impact force generated by rapid rotation.

[0029] The cover 6 is configured to be fixed to the outer wall of the fixing plate 11 of the base 2, protecting the internal structure and providing additional fixing points. The cover 6 has a connecting hole 15, into which the rotating rod 21 of the damper 4 is inserted and fixed to the fixing plate 11 by locking elements 24. The locking elements can be bolts or screws; each cover has two locking elements for locking, preventing the cover from rotating relative to the fixing plate. The design of the cover 6 simplifies the assembly process, allowing the rotating shaft 3, damper 4, and other components to be assembled from the side, reducing production and maintenance costs. The fixing method of the cover 6 not only enhances the stability of the structure but also facilitates subsequent maintenance and replacement.

[0030] The wear-resistant component 7 includes a connecting ring 16 and a connecting piece 17, forming a cover shape. The connecting ring 16 is fitted around the outer periphery of the rotating shaft 3 and is adapted to connect with the inner peripheral wall of the perforation 12 and / or the cover 6 to reduce friction. The connecting piece 17 is disposed on the outer end face of the connecting ring 16, with its outer end face abutting against the bottom surface of the inner side of the cover 6, and its inner end face abutting against the outer end face of the rotating shaft 3 and / or the damper 4 housing 20 to prevent wear. The design of the wear-resistant component 7 effectively extends the service life of the device while reducing noise and loosening problems caused by long-term use.

[0031] The limiting structure includes a limiting block 8, a limiting rod 9, and an abutment surface 10. When the handrail 1 is retracted, the limiting block 8 abuts against the limiting rod 9 on the base 2. This limiting rod can be a bolt fixed to two fixed plates. When the handrail 1 is extended, the limiting block 8 abuts against the upper side wall of the groove 18 and / or the lower end face of the baffle 19 on the base 2, limiting the rotation range of the handrail 1. The upper side wall of the groove 18 and the lower end face of the baffle 19 can be located on the same plane. The design of the limiting structure ensures that the handrail 1 remains stable in different states, avoiding safety hazards caused by excessive rotation.

[0032] In actual operation, when the user retracts the handrail 1 from its unfolded state, the rotating seat 5 drives the rotating shaft 3 to rotate. The rotating shaft 3 moves synchronously with the rotating seat 5 via the first rib 13. Since the outer shell 20 of the damper 4 is fixedly connected to the rotating shaft 3, the outer shell 20 also rotates accordingly. The rotating rod 21 of the damper 4 is fixed to the base 2 by a locking device, so it does not rotate. The damping effect of the damper 4 is generated by the rotation of the outer shell 20, which slows down the rotation speed of the handrail 1, allowing it to descend smoothly. When the handrail 1 is retracted to the designated position, the limiting block 8 on the rotating seat 5 contacts the limiting rod 9 on the base 2, preventing the handrail 1 from continuing to rotate. Similarly, when the handrail 1 is unfolded from its retracted state, the limiting block 8 contacts the upper side wall of the groove 18 or the lower end face of the baffle 19 on the base 2, limiting the unfolding range of the handrail 1.

[0033] The technical advantages of this invention are as follows: Through the damping effect of the damper 4, the handrail 1 achieves a smooth and gradual descent during rotation, avoiding the impact force generated by free fall and thus reducing safety hazards. Since the pivot 3 is the main load-bearing component, the damper 4 does not directly bear the weight, improving the overall structural strength. The side-assembly design of the pivot 3, cover 6, and other components simplifies the assembly process and reduces production costs. The wear-resistant part 7 reduces friction and wear, extending the service life of the device. The limiting structure design ensures that the handrail 1 accurately positions itself when retracting and unfolding, preventing excessive rotation and improving reliability.

[0034] This invention is applicable to various scenarios requiring a soft-close armrest function, such as toilet armrests and seat armrests. In these applications, the smooth soft-close function of armrest 1 not only enhances the user experience but also effectively avoids safety hazards caused by rapid rotation. In particular, in high-frequency use environments, the wear-resistant component 7 and the limiting structure design of this invention can significantly extend the service life of the device and reduce maintenance costs.

[0035] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A damped, gently sloping handrail, comprising a base and a handrail, wherein the base is configured to be fixed to a mounting surface, and the handrail is configured to be rotatably connected to the base; characterized in that, Also includes: A pivot, configured to rotate relative to a base; A damper is disposed inside a rotating shaft, the outer shell of the damper is radially fixedly connected to the rotating shaft, and the rotating rod of the damper is configured to be fixedly connected to a base so that the outer shell of the damper can rotate relative to the base; A rotating base, configured to be fixedly connected to a rotating shaft, configured to rotate relative to a base with respect to the rotating shaft, and the armrest can be connected to the rotating base.

2. The damped descent handrail according to claim 1, characterized in that, The shaft is equipped with two dampers, which are located at both ends of the shaft along its axial direction.

3. A damped, gently descent handrail according to claim 2, characterized in that, The rotating shaft is configured to fit within the inner circumference of the rotating seat. The inner circumferential wall of the rotating seat is provided with a first keyway, and the outer circumferential wall of the rotating shaft is provided with a first rib. The first rib is configured to connect with the first keyway to achieve synchronous rotation of the rotating shaft and the rotating seat. The outer circumferential wall of the damper's outer shell is provided with a second rib, and the inner circumferential wall of the rotating shaft is provided with a second keyway. The second rib is configured to connect with the second keyway to achieve synchronous rotation of the rotating shaft and the damper's outer shell.

4. A damped, gently descent handrail according to any one of claims 1-3, characterized in that, It also includes a cover that can be fixed to the base, the cover having a connection hole, the damper's rotating rod being inserted into the connection hole, the damper's rotating rod being configured to not rotate relative to the base.

5. A damped, gently descent handrail according to claim 4, characterized in that, The base is provided with a pair of outwardly protruding fixing plates, each fixing plate having a through hole. The two ends of the rotating shaft are configured to be inserted into the through holes. The rotating seat is configured to be located between the two fixing plates. The cover is configured to be fixed to the outer wall of the fixing plates.

6. A damped, gently descent handrail according to claim 5, characterized in that, It also includes a wear-resistant component, which includes a connecting ring configured to be fitted onto the outer circumference of the rotating shaft, and the outer circumferential wall of the connecting ring being adapted to connect with the inner circumferential wall of the perforation and / or the cover.

7. A damped, gently descent handrail according to claim 6, characterized in that, The wear-resistant component also includes a connecting piece disposed on the outer end face of the connecting ring. The outer end face of the connecting piece is configured to abut against the bottom surface inside the cover body, and the inner end face of the connecting piece is configured to abut against the outer end face of the rotating shaft and / or the damper housing.

8. A damped, gently descent handrail according to claim 7, characterized in that, The rotating rod of the damper passes through the hole on the connecting plate and connects to the connecting hole of the cover. The hole shape of the connecting hole and the cross-section of the damper rotating rod are non-circular so that the rotating rod does not rotate relative to the other side after being inserted into the connecting hole. The cover is fixed together with the fixing plate by a locking device.

9. A damped descent handrail according to any one of claims 5-8, characterized in that, The rotating base is equipped with a limiting block, and a limiting rod is located at the front end of the two fixed plates. When the handrail is retracted, the limiting block can abut against the limiting rod. The base is equipped with an abutting surface, and when the handrail is unfolded, the limiting block can abut against the abutting surface.

10. A damped, gently descent handrail according to claim 9, characterized in that, The base is provided with an inwardly recessed groove, and the upper sidewall of the groove can be configured to form the abutment surface; and / or: the base is provided with a baffle, and the lower end face of the baffle can be configured to form the abutment surface; when the armrest is unfolded, the limiting block can abut against the upper sidewall of the groove and / or the lower end face of the baffle.

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