CN219673082U - Novel rotation locking structure and wall-hanging slow-descending folding handrail using same - Google Patents

Abstract

The utility model provides a novel rotation locking structure and a wall-mounted slow-descending folding handrail using the same, which can improve the reliability, economy and comfort of use of a user and ensure the appearance of the whole structure to be concise. The rotation locking structure includes: the wall hanging slow-descending folding handrail comprises a handrail rod which is arranged on the swivel base and can mutually follow the swivel base to rotate, and a rotary damper which is arranged on the base. At least one support plate extending outwards along the vertical direction of the wall surface is arranged on the base; the rotary seat is rotatably arranged on the support plate; the shaft lever is used for rotationally connecting the swivel mount and the support plate, and the swivel mount can rotate around the axis of the shaft lever; the rotary seat is provided with a limiting protruding structure extending along the radial direction of the shaft rod, the base is provided with a folding locking structure for clamping and releasing the limiting protruding structure, and when the limiting protruding structure rotates to be clamped with the folding locking structure along with the rotary seat, the folding locking structure limits the rotary seat in the rotation direction through the limiting protruding structure.

Description

Novel rotation locking structure and wall-hanging slow-descending folding handrail using same

[ field of technology ]

The utility model relates to the technical field of wall-mounted foldable equipment, in particular to a novel rotation locking structure and a wall-mounted slow-descending foldable handrail using the same.

[ background Art ]

The wall-mounted folding handrail is a handrail device which can be unfolded and folded and is used for being gripped by a person, and is favored by users because the wall-mounted folding handrail has the advantages of flexible and convenient use, capability of being folded when not needed, space saving and the like.

The wall-mounted folding handrail is generally rotated and unfolded forward and downward through the handrail rod for people to grab and rotated and folded backward and upward to save space, however, the handrail rod is generally made of metal materials and has large weight, and large gravitational potential energy is generated in the process of rotating and unfolding the handrail rod downward from a folding position, so that series of negative effects are generated: 1. the grab rail impacts and damages the wall surface or the structure of the handrail equipment; 2. generating noise; 3. injury to the user, etc.

When a user uses the folding handrail, the user generally needs to hold the handrail rod to enable the handrail rod to rotate and unfold at a low speed, the use convenience is not enough, and potential safety hazards such as injury caused by falling of old and weak users with the handrail rod are further caused; in addition, there are also folding handrails that prevent the grab bar from being rapidly rotated and unfolded by the action of friction force, but the user is required to pull the grab bar to unfold it, the convenience of use is still insufficient, and the structures such as friction pads therein are easily worn to affect the long-term stability of the folding handrail.

In order to eliminate the negative influence and the potential safety hazard and improve the use experience of users, it is most critical that the grab rail can be rotated and unfolded independently and slowly, and the safety and the comfort of the users in using the wall-mounted folding handrail can be greatly improved.

Therefore, the applicant provides an utility model patent with publication number of CN216787691U, patent number of 202220160956.8 and name of a novel foldable handrail structure, and the technical scheme discloses a wall-mounted foldable handrail with a damper, wherein a handrail rod can be slowly rotated and unfolded, the slow descent effect is obvious, and the negative influence and the potential safety hazard are eliminated.

According to the technical scheme, the grab rail is obliquely arranged and is contacted with the wall surface, and meanwhile, the position of the gravity center of the grab rail is adjusted through bending at a certain angle, so that the folding state of the grab rail is kept stable; however, the implementation of this technique requires setting a large folding inclination of the grab rail to overcome the swirling force released by the rotary damper, and further, the stabilization of the folded state by adjusting the gravity center position of the grab rail alone necessarily has a series of negative effects: 1. the compactness of the whole structure of the folding handrail is poor, and the extension size of the base is large, so that the space is wasted and the folding handrail is not attractive; 2. the shape and the design of the grab rail style and the size are severely restricted; 3. the grab rail contacts with the wall surface, so that the grab rail is easy to collide with the wall surface to cause damage to the wall surface decoration material and the grab rail structure, and noise and the like are easy to generate during operation of a user.

Therefore, the applicant has put forward the utility model patent with publication number CN216984711U, patent number 202220470886.6, name a folding handrail with stable folding state, the technical scheme discloses a structure capable of stably folding handrail, namely locking the folding state of handrail by the magnetic attraction of the magnetic piece, the magnetic piece ensures the reliable and stable folding state and reduces the interference to the design of handrail pattern, however, the technical defects still need to be solved, and the technical defects are as follows: 1. the material quality of the magnetic part, the precondition of the magnetic attraction effect and other basic properties determine that the material commonly used by the magnetic part and the folding handrail is inconvenient to directly connect, combine and use, so that the number of the whole structure and auxiliary parts is difficult to be reduced, and the structure compactness is poor; 2. the magnetic part has the advantages of poor structural strength, fragility, easy corrosion and higher purchase cost, so that the processing, production, use and maintenance costs are high, and the popularization is not facilitated.

Of course, in the prior art, a wall-mounted folding handrail is clamped with a handrail rod through a U-shaped buckle to realize a stable folding state, however, the buckle structure in the technology is generally exposed, and the whole structure is poor in compactness and unattractive; at the same time, the volume size of the overall structure is inevitably increased; particularly, the buckle structure is difficult to be matched with a grab bar with a non-round bar structure such as a square tube, and the application limitation is large.

Besides, the wall-mounted folding handrail is also provided with a reset elastic force generated by a torsion spring arranged between the swivel base and the base so as to ensure that the folding state of the handrail rod is stable; the friction force generated by pressing the friction piece arranged between the swivel base and the base is used for maintaining the folding state of the grab rail; however, both of these techniques have serious interference to the damping action and effect of the damper, resulting in a great reduction in the descent control effect, and thus are not suitable for a folding handrail that achieves the descent control effect by rotating the damper. In summary, the prior art does not disclose a technical scheme which has the advantages of simple and direct principle, simple and compact structure, long-term stability and reliability, comfortable and efficient use, low cost and easy implementation in terms of a folding locking mode of a wall-mounted slow-descending folding handrail.

The present utility model has been developed in response to the above-discussed shortcomings in the art, in whole or in part, in wall-mounted drop-down folding armrests.

[ utility model ]

The utility model aims to solve the technical problem of providing a novel rotation locking structure and a wall-hanging slow-descending folding handrail using the same, wherein the novel rotation locking structure can improve the reliability, economy and comfort of use of a user and ensure the appearance of the whole structure to be concise.

The rotation locking structure is integrated in the rotation connecting structure, has few parts, simple and efficient principle and simple and compact structure, can be flexibly applied to wall-mounted folding handrail structures with various structural forms and styles, even wall-mounted folding structures with other purposes, and has wide applicability; in particular, the rotation locking structure can flexibly set the limiting direction of rotation of the rotary seat so as to meet various application requirements.

The wall-mounted slow-descending folding handrail with the rotation locking structure has the advantages of simple and efficient folding locking mode principle and structure, reliability, stability and high efficiency in long-term operation, easiness in implementation and low implementation and maintenance cost; the wall-mounted folding handrail structure is simple, compact and attractive in overall structure, can be flexibly suitable for various structural forms and styles, achieves a slow-descent effect through the rotary damper, and has wide applicability.

The purpose of the utility model is realized in the following way:

the utility model provides a novel rotation locking structure which characterized in that includes: the base is used for being fixedly installed on the wall surface, and at least one support plate extending outwards along the vertical direction of the wall surface is arranged on the base; the rotary seat is rotatably arranged on the support plate; the shaft lever is used for rotationally connecting the swivel mount and the support plate, and the swivel mount can rotate around the axis of the shaft lever; the rotary seat is provided with a limiting convex structure extending along the radial direction of the shaft rod, the base is provided with a folding locking structure for clamping and releasing the limiting convex structure, and when the limiting convex structure follows the rotary seat to be clamped with the folding locking structure, the folding locking structure limits the rotary seat in the rotation direction through the limiting convex structure.

The utility model adopts the rotating locking structure, the limiting bulge structure is arranged on the rotary seat, the folding locking structure is arranged on the base, namely, the locking related structures are integrated in the rotating connecting structure, thereby ensuring the compactness of the whole structure, and the working principle is simple, direct and efficient; when the limiting protruding structure is clamped with the folding locking structure, the rotation of the rotating seat in any direction can be limited, the rotation of the rotating seat in all directions can be limited in intervals, the rotation of the rotating seat in all directions can be limited at the same time, the limiting protruding structure can be flexibly arranged according to different application scenes and requirements, and of course, the limiting protruding structure and the folding locking structure can be separated according to requirements; the rotation locking structure has compact structure, direct and efficient work, and can flexibly set the limiting direction of rotation of the rotary seat, so that the rotation locking structure has wide applicability.

The wall-mounted slow-descending folding handrail with the rotation locking structure comprises a handrail rod which is arranged on the swivel base and can mutually rotate along with the swivel base, and a rotary damper which is arranged on the base; the rotary damper comprises a stator and a rotor, wherein the stator is used for being fixedly installed, the rotor is rotatably arranged on the stator, and a rotor bayonet is arranged on the rotor; the support plates are two, the swivel mount and the shaft lever are rotatably arranged between the two support plates, the shaft lever is non-rotatably connected with the swivel mount, and at least one end part of the shaft lever is in clamping connection with the rotor bayonet; the rotary damper provides a reverse damping force for the grab rail in the process of rotating and unfolding the grab rail forwards and downwards, and does not provide a damping force for the grab rail in the process of rotating and folding the grab rail backwards and upwards; a spreading limiting part for limiting the maximum spreading angle of the grab rail during rotation spreading is arranged between the grab rail and the base or between the grab rail and the wall surface or between the grab rail and the ground or between the swivel base and the base; the grab rail is in an unfolding state when the grab rail rotates and unfolds to a maximum unfolding angle, and the grab rail is in a folding state when the grab rail rotates and folds to the limit protruding structure to be clamped with the folding locking structure, and the folding locking structure limits the swivel seat to enable the grab rail to be in a folding state.

According to the wall-mounted slow-descending folding handrail, the rotary damper enables the handrail rod to rotate forward and downward to be unfolded slowly and gently, so that the safety and the comfort of use of a user are ensured; the hanging slow-descending folding handrail is provided with a rotating seat with a limiting protruding structure and the handrail rod which can mutually rotate along with each other, the folding locking structure on the base is clamped and limited with the limiting protruding structure to enable the handrail rod to be in a folding locking state, the folding locking mode is ingenious in design, simple and efficient in principle, simple and compact in structure, easy to implement and capable of guaranteeing stability of the folding state; in particular, the folding locking mode is suitable for swivel bases and grab bars with various conventional structures and shapes and various unfolding limiting structures, and has high applicability.

The wall-mounted slow-descending folding handrail is characterized by further comprising a decorative shell sleeved on the base, wherein the decorative shell is provided with an avoidance opening for the handrail rod to move, the interior of the decorative shell is provided with a containing cavity for containing the base, the rotary seat, the shaft rod and the rotary damper, and the limiting protruding structure and the folding locking structure are both arranged in the containing cavity. The limiting bulge structure and the folding locking structure are integrated in the rotating connection structure, so that the whole structure is compact; the two are arranged in the accommodating cavity, no related structure is exposed, and the simple and elegant appearance of the whole structure is ensured.

The wall-mounted slow-descending folding handrail is characterized in that the folding locking structure adopts an elastic structure. The folding locking structure adopts an elastic structure, so that the structure shape and the clamping mode of the folding locking structure and the limiting convex structure are diversified, the space for design selection is enriched, and the wide applicability of the folding locking mode is further ensured; particularly, the folding locking structure adopting the elastic structure can be more widely and flexibly adapted to the structural shape of the limiting convex structure and the dimensional tolerance between the limiting convex structure and the limiting convex structure, and the limiting convex structure can be more easily separated from the clamping state, so that the folding locking mode has good effect, is easy to implement and effectively reduces the implementation and maintenance cost.

The wall-mounted slow-descending folding handrail is characterized in that the folding locking structure is of a spring piece structure and comprises a mounting portion and a deformation portion, the mounting portion is used for being fixedly mounted, and the deformation portion is arranged on the mounting portion and is used for being elastically clamped with the limiting protruding structure. The folding locking structure adopts a spring leaf structure, can flexibly adapt to complex and narrow application scenes, has low cost and is easy to implement, and is particularly suitable for narrow and irregular installation space between the base and the swivel base; in particular, the folding locking structure adopting the spring leaf structure has no mechanical failure, and works stably and reliably, thereby ensuring the long-term stability and reliability of the folding locking mode and having low use and maintenance cost for users.

According to the wall-mounted slow-descending folding handrail, the deformation part can be clamped at the front side of the end part of the limiting protruding structure along the unfolding rotation direction of the handrail rod. The deformation part is clamped at the front side of the limit protruding structure along the unfolding and rotating direction of the grab bar, namely, the direction of the blocking force generated by the deformation part on the limit protruding structure is opposite to the unfolding and rotating direction of the grab bar, so that the working efficiency of the folding locking structure is ensured.

The wall-hanging slow-descending folding handrail comprises the deformation part, the clamping part and the connecting part, wherein the clamping part is used for clamping the limiting convex structure and is clamped with the limiting convex structure, and the connecting part is connected between the clamping part and the mounting part. The clamping part is beneficial to clamping the limiting convex structure so as to clamp and lock the limiting convex structure, so that the grab rail can be smoothly switched to a folded state without clamping, and the use comfort of a user is ensured; in particular, the connecting part can improve the whole effective elastic travel of the deformation part, so that the application range of the deformation part is enlarged, and the service life of the folding locking structure is effectively ensured.

According to the wall-mounted slow-descending folding handrail, the front side of the end portion of the limiting protruding structure along the unfolding rotation direction of the handrail rod is provided with the clamping-removing surface which is beneficial to the separation of the clamping-removing surface and the deformation portion, the clamping-removing surface enables the clamping-removing of the limiting protruding structure and the deformation portion to be smooth and free of clamping, the deformation portion is prevented from being deformed in an overrun mode, and therefore the service life of the folding locking structure and the comfort of a user are guaranteed.

According to the wall-mounted slow-descending folding handrail, the plurality of support plate connecting plates used for reinforcing the structural strength of the support plates are arranged between the two support plates, and the mounting part is mounted on at least one support plate connecting plate. The structural strength of the support plate is improved by the support plate connecting plate; the mounting part is arranged on the support plate connecting plate, which is favorable for design and installation of the folding locking structure, is favorable for ensuring compactness of the whole structure, and particularly, can reduce the implementation cost of the folding locking mode, thereby achieving multiple purposes.

According to the wall-mounted slow-descending folding handrail, the folding limiting part which is used for enabling the limiting protruding structures to abut against and limiting the maximum folding angle of the handrail rod in a rotating and folding mode is arranged between the two supporting plates. The limit bulge structure is abutted against the folding limit part to limit the maximum folding angle of the grab rail, so that the grab rail can be prevented from touching the wall surface in the folding process; the grab rail in a folded state can be parallel to the wall surface through the cooperation with other structures, so that the grab rail meets the aesthetic standard of 'horizontal and vertical' of the masses, and the aesthetic property of the utility model is further ensured.

According to the wall-mounted slow-descending folding handrail, the unfolding limiting part is arranged between the swivel base and the base, and the limiting protruding structure can be used as the unfolding limiting part and is clamped with the base to limit the maximum unfolding angle of the handrail rod. This is one embodiment of the wall hanging slow lowering folding handrail of the present utility model. The limiting bulge structure not only can implement the folding locking function, but also can implement the unfolding limiting function, so that the structure has multiple purposes and ingenious design; further ensuring that the utility model can be flexibly applied to wall-mounted folding armrests with various structural styles.

[ description of the drawings ]

The utility model is described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is an exploded view of a rotational locking mechanism according to the present utility model;

FIG. 2 is an exploded view of the wall hanging slow descending folding handrail of the present utility model;

FIG. 3 is a schematic view of a base according to the present utility model;

FIG. 4 is a schematic structural view of a spacing bump structure according to the present utility model;

FIG. 5 is a schematic view of a rotary damper according to the present utility model;

FIG. 6 is a schematic structural view of the folding locking structure of the present utility model;

FIG. 7 is a schematic diagram of an assembly structure of a damping rotary connection structure for a wall-mounted slow-descent folding handrail according to the present utility model;

FIG. 8 is a schematic view of an exploded view of the swivel mount of the present utility model in a split configuration;

FIG. 9 is a schematic view of the folding structure of the grab rail according to the present utility model;

FIG. 10 is a second schematic view of the folding structure of the grab rail according to the present utility model;

FIG. 11 is a third schematic view of the folding structure of the grab rail according to the present utility model;

FIG. 12 is a schematic view of the grab rail of the present utility model in an expanded configuration;

fig. 13 is a second schematic view of the structure of the grab bar in the unfolded state according to the present utility model.

[ detailed description ] of the utility model

A novel rotational locking structure comprising: the base 1 is used for being fixedly installed on the wall surface 10, and the base 1 is provided with at least one support plate 12 extending outwards along the vertical direction of the wall surface 10; the rotary seat 2 is rotatably arranged on the support plate 12; the shaft lever 4 is used for rotationally connecting the swivel base 2 and the support plate 12, and the swivel base 2 can rotate around the axis of the shaft lever 4; the rotary seat 2 is provided with a limiting convex structure 22 extending along the radial direction of the shaft lever 4, the base 1 is provided with a folding locking structure 13 for clamping and unclamping the limiting convex structure 22, and when the limiting convex structure 22 rotates along with the rotary seat 2 to be clamped with the folding locking structure 13, the folding locking structure 13 limits the rotary seat 2 in the rotating direction through the limiting convex structure 22.

In order to ensure the limit effect of the folding locking structure 13 on the rotary seat 2 and ensure that the limit protruding structure 22 can rotate along with the rotary seat 2, preferably, the limit protruding structure 22 is fixedly arranged on the rotary seat 2, and further, the limit protruding structure 22 is integrally formed on the rotary seat 2, and the arrangement mode also ensures the structural strength of the rotary seat 2 and the limit protruding structure 22; the limiting convex structure 22 and the rotary seat 2 are integrally manufactured so that the limiting convex structure and the rotary seat 2 can synchronously rotate, the working efficiency of the rotary locking structure is guaranteed, the compactness of the whole structure is further guaranteed, and the limiting convex structure is few in parts and easy to implement.

The swivel base 2 (and the spacing protruding structure 22) can rotate around the axis of the shaft lever 4, the folding locking structure 13 limits the swivel base 2 in the rotation direction through the spacing protruding structure 22 (when the two are clamped), and the following spacing effect can be realized according to the specific requirements of the application scene: 1. the folding locking structure 13 can provide a limiting function (limiting the rotation of the rotary seat 2 to any direction, namely, one-way stop), 2 can also provide a limiting function (limiting the rotation of the rotary seat 2 within a certain angle range, namely, interval stop) within a certain range in all the rotation directions, 3 can also provide a limiting function (limiting the rotation of the rotary seat 2 to any direction, namely, rotation positioning) in all the rotation directions, and of course, the limiting convex structure 22 can be released from the clamping state at any time according to the use requirement. It should be noted that, to achieve the above-mentioned limiting effect, the limiting protrusion structure 22 and the folding locking structure 13 may be implemented in various combinations (e.g. the limiting protrusion structure 22 may be a bump structure, a plate structure, a tubular column structure, etc., and the folding locking structure 13 may be a positioning marble structure, a latch structure, a rocker structure, etc.), i.e. the two may be flexibly selected.

The folding locking structure 13 limits the rotating seat 2 in the rotating direction through the limiting convex structure 22 (when the folding locking structure and the rotating seat are clamped), and the rotating locking structure is simple in principle and easy to implement; the limiting bulge structure 22 is arranged on the rotary seat 2, the folding locking structure 13 is arranged on the base 1, and all structures related to the folding locking mode are integrated in the rotating connection structure formed by the base 1, the rotary seat 2 and the shaft lever 4, namely the rotating locking structure is compact in structure; meanwhile, the rotation locking structure can be flexibly applied to wall-mounted folding equipment with various structural forms, and has wide adaptability.

The wall-hanging slow-descending folding handrail with the rotation locking structure comprises a handrail rod 5 which is arranged on a swivel base 2 and can mutually rotate along with the swivel base, and a rotary damper 3 which is arranged on a base 1; at least one rotary damper 3 is arranged outside the support plate 12, the rotary damper 3 comprises a stator 31 for fixed installation and a rotor 32 rotatably arranged on the stator 31, and a rotor bayonet 321 is arranged on the rotor 32; the two support plates 12 are arranged, the swivel mount 2 and the shaft lever 4 are rotatably arranged between the two support plates 12, the shaft lever 4 is non-rotatably connected with the swivel mount 2, and at least one end part of the shaft lever 4 is connected with the rotor bayonet 321 in a clamping way; the rotary damper 3 provides a reverse damping force for the grab rail 5 in the process of rotating and unfolding forward and downward, and the rotary damper 3 does not provide a damping force for the grab rail 5 in the process of rotating and folding backward and upward; a spreading limiting part 6 for limiting the maximum spreading angle of the rotation spreading of the grab rail 5 is arranged between the grab rail 5 and the base 1 or between the grab rail 5 and the wall surface 10 or between the grab rail 5 and the ground or between the swivel base 2 and the base 1; the grab rail 5 is in an unfolding state when the grab rail rotates and unfolds to a maximum unfolding angle, and the grab rail 5 is in a folding state by limiting the swivel seat 2 through the folding locking structure 13 when the grab rail 5 rotates and folds to the limiting protruding structure 22 to be clamped with the folding locking structure 13.

Preferably, for easy installation and improved structural strength, the base 1 includes a bottom plate 11 for fixed installation, and two support plates 12 are disposed on the bottom plate 11; in order to improve the structural strength and ensure the compactness, the shaft lever 4 adopts an integrated structure, which penetrates through the swivel base 2 (the shaft lever 4 and the swivel base 2 are connected in a non-rotatable way) and is inserted on the two support plates 12 (the shaft lever 4 and the support plates 12 are connected in a rotatable way); for easy installation, the rotary damper 3 is fixedly installed on the outer side of the support plate 12; in order to improve the working efficiency of the overall structure and the comfort of the user, the grab rail 5 and the swivel mount 2 (and the limit projection structure 22) can rotate synchronously. The folding lock structure 13 limits the swivel base 2 to stably fold the grab bar 5, and at this time, the grab bar 5 is limited to rotate forward and downward (one-way/interval stop) or to a specific folding angle (rotational positioning). Because the spacing protruding structure 22 extends along the radial direction of the shaft lever 4 and has a certain length of force arm, the folding locking structure 13 can maintain the clamping state with the spacing protruding structure 22 with smaller clamping force, so that the reliability and comfort of the user in use are ensured [ meanwhile, the handrail 5 has a longer force arm, the user can clamp the spacing protruding structure 22 and the folding locking structure 13 together with smaller force, or the spacing protruding structure 22 is separated from the folding locking state (the clamping state of the spacing protruding structure 22 and the folding locking structure 13 ].

From the design concept of the present utility model, the limit projection structure 22 may extend along all radial angles of the shaft lever 4; however, in consideration of factors such as a usual rotation angle range of the grab rail 5, an orientation of the base 1 (support plate 12) with respect to the wall surface 10, and a user's desire for a product volume size (compactness of the overall structure), it is preferable that the movable range of the limit projection structure 22 is set as far as possible on the side of the wall surface 10 bordered by the shaft lever 4; further, the above-mentioned movable range of the limiting protrusion structure 22 can be further limited on the lower side with the shaft lever 4 as a boundary, so as to further ensure the compactness of the whole structure. The limitation (namely, the limit projection structure 22 and the grab bar 5 are arranged along the radial direction of the shaft lever 4 in a reverse extending way) ensures the compactness of the whole structure to the maximum extent.

Particularly, the wall-mounted slow-descending folding handrail is not limited by the design of the selection and the style of the structures such as the handrail rod 5, the swivel base 2 and the base 1, is suitable for various wall-mounted folding handrails, and has high applicability. The unidirectional rotary damper 3 enables the grab rail 5 (after being released from the folding locking structure 13) to rotate and unfold automatically and slowly, thereby ensuring the safety and comfort of the use of users.

The wall-hanging slow-descending folding handrail further comprises a decorative shell 7 sleeved on the base 1, an avoidance opening 71 for the handrail rod 5 to move is formed in the decorative shell 7, a containing cavity 72 for containing the base 1, the swivel base 2, the shaft rod 4 and the rotary damper 3 is formed in the decorative shell 7, and the limiting protruding structure 22 and the folding locking structure 13 are all arranged in the containing cavity 72. The limiting protruding structure 22 and the folding locking structure 13 are highly integrated in the rotating connecting structure, so that the whole structure is compact; and both are arranged in the accommodating cavity 72, namely, the folding locking mode has no exposure of related structures (the appearance is concise and elegant), as shown in fig. 9 and 13, so that the aesthetic property of the whole structure is ensured.

Preferably, the folding locking structure 13 adopts an elastic structure. The folding locking structure 13 may be an elastic structure as a whole or a component provided with (including) an elastic structure; the folding locking structure 13 or the component of the elastic structure can be made of metal or nonmetal, so that the folding locking structure 13 deforms or deforms when acted by force, and recovers or resets after the acting force is removed, thereby ensuring the working efficiency and the convenience and comfort of the user. The folding locking structure 13 adopts an elastic structure, so that the structure form and the clamping mode with the limiting protrusion structure 22 are diversified, the structure form of the limiting protrusion structure 22 can be adapted to a wider range, and the limiting protrusion structure 22 is more beneficial to being separated from the folding locking state (the state clamped with the folding locking structure 13), including but not limited to: 1. the folding locking structure 13 can be an elastic positioning marble structure and is clamped with two sides of the limiting protruding structure 22 along the axial direction of the shaft lever 4; 2. the folding locking structure 13 may be an elastic buckle structure (e.g. a U-shaped buckle) and is engaged with the outer side of the limiting protrusion structure 22 (e.g. a cylindrical shape); 3. the folding locking structure 13 can be an elastic bolt structure, and can be inserted into the limit bulge structure 22 (with a clamping through hole) and pressed and clamped with the limit bulge structure; 4. the folding locking structure 13 may be an elastic nonmetallic structure, and is clamped with the end portion of the limiting protruding structure 22 (deformation extrusion and clamping by friction force).

Of course, the folding locking structure 13 may also adopt an inelastic structure, including but not limited to: the folding locking structure 13 adopts a rocker structure (stress is generated inside and the folding locking structure can reciprocate), and one or two movable ends of the rocker structure are clamped with the end parts of the limiting convex structures 22 to achieve the limiting effect.

In particular, the folding locking structure 13 adopting the elastic structure (no matter what type or mode of elastic structure is adopted), further ensures the wide applicability of the utility model; the folding locking mode can also be elastically and widely adapted to the dimensional tolerance between the limit protrusion structures 22 (the elastic structure has tolerance of the structure), so that the folding locking mode is good in effect, easy to implement and low in implementation and maintenance cost; the elastic structure can further improve the convenience and comfort of the user (the hand feel feedback when the limit protruding structure 22 is clamped or unclamped with the folding locking structure 13).

Preferably, the folding locking structure 13 is a spring leaf structure, and includes a mounting portion 131 for fixing and mounting, and a deformation portion 132 disposed on the mounting portion 131 and adapted to be elastically clamped with the limiting protrusion structure 22. The folding locking structure 13 adopts a spring leaf structure, is suitable for complex and narrow installation space, is reliable and stable, has no mechanical failure, is easy to implement and has low cost. Further, the folding locking structure 13 formed by the mounting part 131 and the deformation part 132 is in a U shape or V shape, so that the compactness of the structure is ensured, as shown in fig. 6, the structure strength is ensured, the installation is easy, the space is saved, and the whole structure is more compact; of course, the whole folding locking structure 13 can be completely in other shapes, such as L-shape.

The deformation part 132 can be clamped at the front side of the end part of the limit protrusion structure 22 along the unfolding and rotating direction of the grab bar 5, namely, the direction of the blocking force generated by the deformation part 132 on the limit protrusion structure 22 is opposite to the unfolding and rotating direction of the grab bar 5, so that the folding locking structure 13 is determined to work directly and efficiently. Of course, the deformation portion 132 of the folding locking structure 13 adopting the spring leaf structure can also be clamped at two sides of the limiting protruding structure 22 along the axial direction of the shaft lever 4. However, the folding lock structure 13 is engaged with the end of the limit projection structure 22 on the front side in the direction of the unfolding rotation of the grab bar 5, and this is preferable in terms of implementation cost, long-term operation reliability, locking effect, compactness of the overall structure, and the like.

Preferably, the deformation portion 132 includes a clamping portion 1321 for the limiting protruding structure 22 to be clamped and connected with the clamping portion 1321, and a connecting portion 1322 connected between the clamping portion 1321 and the mounting portion 131. The end of the limiting protruding structure 22 is abutted with the clamping part 1321 at a large angle (rotation angle), the clamping part 1321 is elastically abutted with the end (during the period that the deformation part 132 is in an elastic deformation state), until the clamping part 1321 is clamped with the front side of the limiting protruding structure 22 along the unfolding rotation direction of the grab rail 5 (the end of the limiting protruding structure 22 falls into the bayonet of the clamping part 1321, and then the deformation part 132 is elastically reset to realize the clamping of the clamping part 1321), as shown in fig. 6 and 10, the grab rail 5 can be switched to a folding state more smoothly (without clamping) by the above process, and the comfort of the user is ensured. The connecting portion 1322 can increase the effective elastic travel of the whole deformation portion 132, so as to expand the application range of the folding locking structure 13. Since the rotation radius of the limiting protrusion structure 22 is fixed, that is, the actual deformation stroke of the deformation portion 132 is always fixed, the effective elastic stroke (deformation allowable range) of the deformation portion 132 can be set to be always larger than the actual deformation stroke, so as to ensure the service life of the folding locking structure 13. In addition, the deformation part 132 can set the magnitude of the elastic clamping force provided by the grab bar 5 according to the weight, style, size and other variables, so as to ensure that the folding state of the grab bar 5 is stable, the clamping and releasing force is moderate, and the safety and comfort of the use of a user are met.

Preferably, the front side of the end of the limit projection structure 22 along the unfolding rotation direction of the grab bar 5 is provided with a release surface 221 which facilitates the separation from the deformation portion 132. As shown in fig. 4, the releasing surface 221 makes the releasing between the limiting protrusion structure 22 and the deformation portion 132 smoother (without jamming), which ensures the comfort of the user in use (switching the grab bar 5 from the folded state to the unfolded state), and also ensures the service life of the folding locking structure 13 (preventing the deformation portion 132 from being deformed excessively when the limiting protrusion structure 22 and the deformation portion 132 are released). In particular, the engaging portion 1321 may be provided with an adapting surface 13211 with a shape, a size, and an angle adapted to the releasing surface 221, where the adapting surface 13211 extends and inclines along the direction of the unfolding rotation of the grab rail 5, so as to further facilitate the separation and releasing of the limiting protruding structure 22 from the deformation portion 132. Preferably, to further facilitate the locking of the limiting protrusion 22 into the locking portion 1321, a rounded portion 222 is provided at the end of the limiting protrusion 22 opposite to the releasing surface 221 (the front side along the folding rotation direction of the grab bar 5).

Preferably, a plurality of support plates 122 for reinforcing structural strength of the support plates 12 are disposed between the two support plates 12, and the mounting portion 131 is mounted on at least one of the support plates 122. The support plate connecting plate 122 improves the structural strength of the support plate 12, the number and the structural form of the support plate connecting plate can be various, the support plate connecting plate can be fixedly connected with two support plates 12, can be detachably connected with two support plates 12, and can be integrally formed with two support plates 12 through bending. Preferably, as shown in fig. 3, the wall hanging slow-descending folding handrail of the present utility model is provided with at least one support plate connecting plate 122 integrally formed with two support plates 12 through bending, and the support plate connecting plate 122 is arranged at the bottommost part between the two support plates 12, i.e. the whole formed by the support plate connecting plate 122 and the two support plates 12 is in a U-shape/V-shape; further, the mounting portion 131 is mounted (by means of screws or clips) on the support plate 122 (i.e. on the support plate 122 at the bottom of the U/V shape). The arrangement scheme of the mounting part 131 is beneficial to the structure selection, style design and mounting and fixing of the folding locking structure 13; meanwhile, the spacing protruding structure 22 reciprocally rotates between the two support plates 12, so that the implementation effect and cost of the folding locking mode can be optimized. Of course, the mounting portion 131 may be mounted on the base 1 (the base plate 11 and/or the support plate 12) at other positions. The support plate 122 has multiple functions.

Preferably, a folding limiting portion 8 for limiting the maximum folding angle of the grab rail 5 by rotating is provided between the two support plates 12 for the limiting protrusion 22 to abut against. The wall hanging slow descending folding handrail can be provided with the folding limiting part 8 no matter whether the limiting effect of the folding locking structure 13 on the limiting convex structure 22 is unidirectional stop, interval stop or rotation positioning. Defining the maximum folding angle of the grab bar 5 prevents the grab bar 5 from contacting or striking the wall 10, and is more beneficial (and can cooperate with the folding locking structure 13) to make the folded state of the grab bar 5 in a vertical posture so as to meet the aesthetic standard of the public 'horizontal and vertical'. Preferably, the front side of the limit protruding structure 22 along the folding rotation direction of the grab rail 5 is abutted against the folding limit part 8, so that the grab rail 5 is at the maximum folding angle, namely, the direction of the stopping force generated by the folding limit part 8 on the limit protruding structure 22 is opposite to the folding rotation direction of the grab rail 5, and the limit mode is ensured to work directly, efficiently, stably and reliably. The structural form of the folding limit part 8 can be various: preferably, a transverse structure (i.e., a support plate 122 structure) is used between two support plates 12, as shown in fig. 10; of course, the folding limiting portion 8 may be any other structure disposed between the two support plates 12. In addition, a crash pad can be arranged on the folding limit part 8 to ensure silence. The support plate 122 has multiple functions.

Preferably, when the expansion limiting part 6 is disposed between the swivel base 2 and the base 1, the limiting protrusion structure 22 can be used as the expansion limiting part 6 and is clamped with the base 1 to limit the maximum expansion angle of the grab rail 5. As described above, the wall hanging slow descending folding handrail of the present utility model is suitable for wall hanging folding handrail with various structural forms and design patterns, and this is one embodiment, as shown in fig. 12. The limit bulge structure not only can implement folding locking function, the unfolding limit function can be implemented, so that multiple purposes are achieved.

The arrangement of the limit projection structure 22 ensures that the utility model can be flexibly applied to folding armrests with various structural styles, and the whole structure is simple and compact. Further, when the limit protrusion structure 22 is clamped with the base 1 as the expansion limit portion 6, as shown in fig. 12, in order to increase the arm length of the limit protrusion structure 22 in a limited space, an avoidance gap 111 for avoiding so as not to interfere with the movement of the limit protrusion structure 22 is provided on the bottom plate 11; in order to improve the stability and strength of the clamping and limiting of the limiting convex structure 22 and the base 1, the upper end part of the avoidance gap 111 is provided with a clamping block 14 which can be used for clamping the limiting convex structure 22 to limit the maximum unfolding angle of the grab bar 5; of course, the limiting protruding structure 22 can also be directly clamped with the top surface of the avoidance gap 111, and even can be directly abutted and clamped with the outer side surface of the bottom plate 11.

The swivel base 2 and the grab bar 5 may be integrally formed (e.g., the swivel base 2 is formed by one end of the grab bar 5); or may be fixedly connected (e.g., welded); but also can be detachably connected, and when the two are detachably connected, the swivel base 2 is preferably provided with a connecting rod seat 23 for detachably connecting the grab rail 5. The connection mode of the swivel base 2 and the handrail rod 5 can be selected according to the specific structural style of the folding handrail, and of course, the detachable connection mode is more beneficial to the integral structure of the decorative shell 7; in addition, in order to improve the touch feeling and the aesthetic property, a sleeve for improving the touch feeling can be sleeved on the grab rail 5; furthermore, in order to enhance the texture, a pad 9 for reducing friction between the two support plates 12 and the swivel base 2 may be provided; even further, a second decorative case may be provided between the swivel base 2 and the grab bar 5 to cover and shield the swivel base 2 and a connection port (not shown) between the swivel base 2 and the grab bar 5 to further enhance the aesthetic appearance.

In order to ensure the assembly connection effect and efficiency of each structure, preferably, as shown in fig. 8, a split structure is adopted by a swivel base 2 and split into a split 20A and a split 20B, and the swivel base 2 compresses and fastens the split 20A and the split 20B on a shaft lever 4 through a connecting piece 201; meanwhile, the shaft lever 4 is connected with the swivel base 2 and the rotary damper 3 in a clamping way and is connected with the two support plates 12 in a rotating way; the swivel base 2 is detachably connected with the grab rail 5 through a connecting rod seat 23.

When the wall hanging slowly lowering folding handrail is folded, a user pulls the handrail 5 to the upper rear, the rotary damper 3 does not generate damping force, when the end part of the limit projection structure 22 is abutted with the clamping part 1321, the deformation part 132 is elastically deformed, and the handrail 5 is continuously pulled to the upper rear (the clamping part 1321 is elastically followed and abutted with the end part of the limit projection structure 22, and no clamping is smoothly carried out), so that the end part of the limit projection structure 22 is clamped with the clamping part 1321, and at this time, the handrail 5 is in a stable folded state, as shown in fig. 10 and 11; the folding limit part 8 can limit the maximum folding angle of the grab rail 5 by limiting the movable range of the limit projection structure 22; the position relation between the folding limit part 8 and the folding locking structure 13 can be preset, so that the grab rail 5 in the folded state is not contacted with the wall surface 10, and the vertical and attractive folding lock is vertical and attractive, and is easy and comfortable to operate.

When the wall hanging slowly-descending folding handrail is unfolded, a user only needs to pull the handrail rod 5 in a folded state forward and downward with a light force under the cooperation of the release surface 221 arranged at the end part of the limiting protruding structure 22, so that the limiting protruding structure 22 and the folding locking structure 13 can be released, at the moment, the handrail rod 5 rotates and unfolds forward and downward at a constant speed independently under the combined action of the gravity and the damping force generated by the rotary damper 3 (the damping force of the rotary damper 3 is preset according to the weight, the length and other variables of the handrail rod 5) until the limiting protruding structure 22 (the unfolding limiting part 6) is abutted and clamped with the base 1, and at the moment, the handrail rod 5 is in a completely unfolded state, as shown in fig. 12 and 13, a stable unfolding angle is formed, and the user can normally rest.

In general, the rotation locking structure and the slowly-descending folding handrail applying the rotation locking structure are ingenious in design, compact in structure, reliable, stable and efficient in long-term operation, low in implementation and maintenance cost and capable of greatly improving convenience, safety and comfort of use of users.

Claims (11)

1. The utility model provides a novel rotation locking structure which characterized in that includes:

the base (1) is used for being fixedly arranged on the wall surface (10), and at least one support plate (12) extending outwards along the vertical direction of the wall surface (10) is arranged on the base (1);

the rotary seat (2) is rotatably arranged on the support plate (12);

the shaft lever (4) is used for rotationally connecting the swivel base (2) and the support plate (12), and the swivel base (2) can rotate around the axis of the shaft lever (4);

be equipped with on the swivel base (2) along spacing protruding structure (22) that radial extension of axostylus axostyle (4), be equipped with on base (1) and supply spacing protruding structure (22) joint and the folding locking structure (13) of taking off the card, work as spacing protruding structure (22) follow swivel base (2) rotate to with folding locking structure (13) joint time, folding locking structure (13) are through spacing protruding structure (22) are right swivel base (2) are spacing in its direction of rotation.

2. A wall-mounted slow-descending folding handrail using the rotation locking structure as claimed in claim 1, which is characterized by comprising a handrail rod (5) which is arranged on the swivel base (2) and can mutually rotate along with the swivel base, and a rotary damper (3) which is arranged on the base (1); the rotary damper (3) is at least one and arranged on the outer side of the support plate (12), the rotary damper (3) comprises a stator (31) used for being fixedly installed and a rotor (32) rotatably arranged on the stator (31), and a rotor bayonet (321) is arranged on the rotor (32); the two support plates (12) are arranged, the swivel mount (2) and the shaft lever (4) are rotatably arranged between the two support plates (12), the shaft lever (4) is non-rotatably connected with the swivel mount (2), and at least one end part of the shaft lever (4) is connected with the rotor bayonet (321) in a clamping way; the rotary damper (3) provides a reverse damping force for the grab rail (5) in the process of rotating and unfolding forward and downward, and the rotary damper (3) does not provide a damping force for the grab rail (5) in the process of rotating and folding backward and upward; an unfolding limiting part (6) for limiting the maximum unfolding angle of the rotation and unfolding of the grab rail (5) is arranged between the grab rail (5) and the base (1) or between the grab rail (5) and the wall surface (10) or between the grab rail (5) and the ground or between the swivel base (2) and the base (1); the grab rail (5) is in an unfolding state when the grab rail rotates and unfolds to a maximum unfolding angle, and the grab rail (5) is folded to a folding locking structure (13) when the limit protrusion structure (22) is clamped with the folding locking structure (13), and the folding locking structure (13) enables the grab rail (5) to be in a folding state by limiting the swivel base (2).

3. The wall-mounted slow-descending folding handrail is characterized by further comprising a decorative shell (7) sleeved on the base (1), wherein an avoidance opening (71) for the handrail rod (5) to move is formed in the decorative shell (7), a containing cavity (72) for containing the base (1), the swivel base (2), the shaft rod (4) and the rotary damper (3) is formed in the decorative shell (7), and the limiting protruding structure (22) and the folding locking structure (13) are arranged in the containing cavity (72).

4. A wall hanging slow descending folding handrail according to claim 2 or 3, characterized in that the folding locking structure (13) adopts an elastic structure.

5. The wall-mounted slow-descending folding handrail according to claim 4, wherein the folding locking structure (13) is a spring leaf structure, and comprises a mounting portion (131) for fixed mounting and a deformation portion (132) arranged on the mounting portion (131) and used for being elastically clamped with the limiting protruding structure (22).

6. The wall-mounted slow-descending folding handrail according to claim 5, wherein the deformation portion (132) is capable of being clamped at the front side of the end portion of the limiting protruding structure (22) along the unfolding rotation direction of the handrail rod (5).

7. The wall-mounted slow-descending folding handrail according to claim 6, wherein the deformation portion (132) comprises a clamping portion (1321) for the limiting protruding structure (22) to clamp in and be clamped with, and a connecting portion (1322) connected between the clamping portion (1321) and the mounting portion (131).

8. The wall-hanging slow-descending folding handrail according to claim 6, wherein the front side of the end portion of the limiting protruding structure (22) along the unfolding rotation direction of the handrail rod (5) is provided with a releasing surface (221) which facilitates the separation of the releasing surface from the deformation portion (132).

9. The wall-mounted slow-descending folding handrail as claimed in claim 6, wherein a plurality of support plate connecting plates (122) for reinforcing structural strength of the support plates (12) are arranged between the two support plates (12), and the mounting portion (131) is mounted on at least one of the support plate connecting plates (122).

10. A wall hanging slow descending folding handrail according to claim 2 or 3, characterized in that a folding limit part (8) for the limit bulge structure (22) to lean against and limiting the maximum folding angle of the handrail rod (5) to fold is arranged between the two support plates (12).

11. A wall hanging slow descending folding handrail according to claim 2 or 3, characterized in that the expansion limit part (6) is arranged between the swivel base (2) and the base (1), and the limit projection structure (22) can be used as the expansion limit part (6) and is clamped with the base (1) to limit the maximum expansion angle of the handrail rod (5).