Adjustable handrail

Abstract

According to the scheme, stand columns are ingeniously connected with a handrail in a rotating mode, restraining parts are arranged on the stand columns, and the stand columns are movably matched with connecting rods arranged between the stand columns through the restraining parts, so that when the adjustable handrail is installed on site, the stand columns are not prone to falling off, and the handrail is not prone to falling off. Through movable cooperation of the stand columns, the hand rails and the connecting rods, posture adjustment can be conducted by self-adaption to the inclination angles of the ground and stairs of an installation site, the connecting rods do not need to be screwed and fixed through screws one by one during installation, the number of accessories is reduced, and the installation time is saved; according to the scheme, the adjustable handrail is simple in structure, all the components are matched reliably, and the field installation efficiency and flexibility of installation personnel can be improved.

Description

Technical Field

[0001] The utility model relates to the field of guardrail devices, in particular to an adjustable guardrail. Background Art

[0002] As a common guardrail device on the edge of roads and stairs, railings are not only simple in structure but also easy to install. As people pay more and more attention to the safety of public places and home walking areas, railing devices are widely used on the edges of roads and stairs. Due to the different conditions of different sites, especially the different slopes of stairs in different sites, when installing railings in many sites, most of them need to rely on railing processing personnel to conduct on-site measurements or obtain on-site conditions through other forms before processing the railings. This method makes the railings non-standard parts. For non-standard parts, since the applicable sites are relatively limited and they are often one-to-one customized, there are problems such as difficulty in reuse and high processing costs, which to a certain extent restricts the choice of consumers and the expansion of the processing scale of processing manufacturers. Especially for merchants who sell in the form of telemarketing or blind selection, how to enable them to be installed and adapted on stairs and ground with different slopes through the adaptive structure of railing products without relying on consumers to provide the size of the installation site or the slope of the stairs is a very positive and realistic research topic. Although there are some railing structures on the market with handrails and columns that can rotate relative to each other, most of these products have handrails and columns that can adapt to stairs or floors with different slopes. When connecting rods need to be installed to improve the structural strength between the columns, the connecting rods still need to be customized in length or welded separately, which to a certain extent affects the installation efficiency of the railings and increases the complexity of the operation. Therefore, while improving the railings' ability to adapt to the slope of stairs or the slope of the site, how to further improve their installation convenience and efficiency is a very positive and practical topic. Summary of the invention

[0003] In view of this, the purpose of the utility model is to provide an adjustable handrail which has a simple structure, is easy to install and can adapt to the slope of stairs or installation sites.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the utility model is:

[0005] An adjustable handrail comprises a handrail and a column, wherein the handrail is arranged horizontally or obliquely; the column is more than two and is arranged below the handrail at intervals along the length direction of the handrail, the upper end of the column is rotatably connected to the lower side of the handrail, and the lower end of the column is used to connect to an external support to support the handrail; the adjustable handrail also includes:

[0006] There are more than one connecting rods, and they are arranged between adjacent columns. A restraining part for cooperating with the connecting rod is arranged in the column, and the restraining part includes an escape opening arranged on the column and for the connecting rod to pass through; both ends of the connecting rod respectively pass through the escape openings of the columns adjacent to them, and are dynamically connected with the restraining part of the column;

[0007] Wherein, both ends of the connecting rod are connected with limiting members, and the limiting members are used to prevent the ends of the connecting rod from falling out of the restraining part.

[0008] In this solution, the dynamic connection between the connecting rod and the restraining portion of the column includes a rotational connection, a connection that can move axially within a certain range, etc.

[0009] As a possible implementation manner, further, the connecting rod is parallel to the handrail.

[0010] As a possible implementation manner, further, when the column and the handrail rotate relative to each other, the connecting rod can rotate along with the limiting piece at its end.

[0011] As a possible implementation manner, further, the column is a tubular structure, and the tube wall around the avoidance opening portion, the inner cavity, and the portion that penetrates and cooperates with the connecting rod are set as the restraining portion.

[0012] As a possible implementation manner, further, a connecting seat is provided at the bottom of the column described in this solution.

[0013] As a possible implementation manner, further, in this solution, one, two, three or more connecting rods are provided between adjacent columns, and when there are more than two connecting rods between adjacent columns, the connecting rods are arranged at intervals from top to bottom between adjacent columns.

[0014] Based on the above structure, as a preferred implementation option, preferably, the horizontal width of the avoidance opening is greater than the width of the end of the connecting rod and less than the side wall width of the column.

[0015] As one of the optional implementation structures of the position-limiting member of the present solution, preferably, the position-limiting member of the present solution is a position-limiting pin, both ends of which are respectively fixed on the side walls on both sides of the restraining part of the column;

[0016] Correspondingly, in the present embodiment, a limiting groove cooperating with the limiting pin is provided on the end of the connecting rod that passes through the constraint portion. The limiting groove is a U-shaped structure, and one end of the U-shaped structure extends along the axial end of the connecting rod and forms an open opening. When the end of the connecting rod passes through the constraint portion, the limiting pin enters the limiting groove on the end of the connecting rod from the open opening, so that the connecting rod can be rotatably connected around the limiting pin and overlapped on the limiting pin.

[0017] As a second optional implementation structure of the position-limiting member of the present invention, preferably, the position-limiting member of the present invention is a U-shaped spring piece, and a position-limiting protrusion is provided on the side surfaces separated from each other at both ends of the U-shaped spring piece;

[0018] Correspondingly, in this solution, a receiving cavity is provided on the end of the connecting rod that penetrates into the restraining portion, the U-shaped spring piece is arranged in the receiving cavity, and a through hole is provided on one of the two opposite side walls of the receiving cavity corresponding to the limiting protrusion of the U-shaped spring piece, the limiting protrusion passes through the receiving cavity through the through hole and is higher than the outer side wall of the connecting rod;

[0019] In addition, the column described in this scheme has one of the following structures:

[0020] (1) The side walls on both sides of the restraining part of the column are provided with corresponding limiting holes that cooperate with the limiting protrusions. When the end of the connecting rod passes through the restraining part, the part of the limiting protrusion that is higher than the outer wall of the connecting rod passes through the limiting hole, so that the connecting rod can be rotatably restrained in the restraining part;

[0021] (2) The lower portion of the avoidance opening of the column is a constricted structure, the width of which is greater than the width of the end portion of the connecting rod and less than the sum of the width of the end portion of the connecting rod and the height of the limiting protrusion above the outer wall of the connecting rod; the width of the upper portion of the avoidance opening of the column is greater than the sum of the width of the end portion of the connecting rod and the height of the limiting protrusion above the outer wall of the connecting rod, the end portion of the connecting rod is inserted from the upper portion of the avoidance opening to the upper portion of the constraint portion, and is constrained and cooperated with the limiting protrusion of the U-shaped spring sheet and the constricted structure of the avoidance opening located at the lower portion of the constraint portion.

[0022] As a third optional implementation structure of the limiter of the present invention, preferably, the limiter of the present invention is a limiter rod, the limiter rod is inserted into the end of the connecting rod that penetrates the constraint portion, and the two ends of the limiter rod respectively pass through the two sides of the connecting rod, and both ends are higher than the outer side wall of the connecting rod;

[0023] Correspondingly, the lower part of the avoidance opening of the column described in this scheme is a shrinking structure, the width of which is greater than the width of the end of the connecting rod, and less than the sum of the width of the end of the connecting rod and the height of the two ends of the limiting rod above the outer wall of the connecting rod; the width of the upper part of the avoidance opening of the column is greater than the sum of the width of the end of the connecting rod and the height of the two ends of the limiting rod above the outer wall of the connecting rod, the end of the connecting rod is inserted into the constraint part from the upper part of the avoidance opening, and is constrained and cooperated with the shrinking structure of the avoidance opening located at the lower part of the constraint part through the limiting rod.

[0024] As a fourth optional implementation structure of the position limiting member of this solution, preferably, the position limiting member of this solution includes:

[0025] The bracket is a box-shaped shell structure with an open upper end, which is fixedly arranged at the lower part of the constraint part of the column, and the side of the bracket opposite to the avoidance opening of the constraint part is provided with a penetration opening for the end of the connecting rod to penetrate, and the upper part of the bracket is provided with a lap groove extending upward to form an opening on both sides adjacent to the penetration opening, and the lap groove is a V-shaped or U-shaped structure;

[0026] Correspondingly, in this embodiment, protrusions are provided on both sides of the end of the connecting rod that passes through the constraint part, and the end of the connecting rod passes from the upper part of the avoidance opening to the upper part of the constraint part, and is movably overlapped on the overlap groove through the protrusions.

[0027] As a preferred implementation option, preferably, the bracket of this solution has one or more of the following structures:

[0028] (1) A water guide plate is obliquely provided at the lower part of the bracket, and the oblique lower side of the water guide plate extends to the outer side surface of the bracket provided with the through opening or extends out of the outer side surface provided with the through opening;

[0029] (2) The bracket is provided with a connecting skirt at the lower part of the outer side surface with a through opening, and a slot is formed between the connecting skirt and the outer side surface with the through opening of the bracket. The bracket is plugged into and matched with the lower edge of the avoidance opening through the slot, so that the bracket is plugged and fixed to the lower part of the restraint portion of the column.

[0030] By adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the scheme cleverly connects the column and the handrail by rotation, and provides a constraint part on the column, and the constraint part cooperates with the connecting rod arranged between the columns, so that the adjustable handrail of the scheme can be adjusted according to the inclination angle of the ground and stairs of the adaptive installation site through the active cooperation of the column, handrail and connecting rod during on-site installation, and the installation of the connecting rod does not need to be fixed by tightening screws one by one, which reduces the number of accessories and saves installation time; the adjustable handrail of the scheme is not only simple in structure, but also has reliable cooperation of various components, which helps to improve the on-site installation efficiency and flexibility of the installers. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is one of the three-dimensional perspective diagrams of the simplified implementation structure of Example 1 of this solution;

[0032] Figure 2 This is the second three-dimensional perspective schematic diagram of the simplified implementation structure of Example 1 of the present scheme, in which a partial cutaway schematic diagram and an enlarged view of the portion where the connecting rod and the column cooperate are made;

[0033] Figure 3 It is a side cutaway two-dimensional schematic diagram of a simplified implementation structure of Example 1 of the present scheme;

[0034] Figure 4 This is a brief exploded diagram of the handrail, column, and connecting rod of Example 1 of this solution;

[0035] Figure 5 This is one of the three-dimensional perspective diagrams of the simplified implementation structure of Example 2 of this solution;

[0036] Figure 6 This is the second three-dimensional perspective schematic diagram of the simplified implementation structure of Example 2 of this solution, in which a partial cutaway schematic diagram and an enlarged view of the portion where the connecting rod and the column cooperate are made;

[0037] Figure 7 It is a side cutaway two-dimensional schematic diagram of a simplified implementation structure of Example 2 of the present scheme;

[0038] Figure 8 This is a brief exploded diagram of the handrail, column, and connecting rod of Example 2 of this solution;

[0039] Fig. 9 This is one of the three-dimensional perspective diagrams of the simplified implementation structure of Example 3 of this solution;

[0040] Fig.10 This is the second three-dimensional perspective schematic diagram of the simplified implementation structure of Example 3 of this solution, in which a partial cutaway schematic diagram and an enlarged view of the portion where the connecting rod and the column cooperate are made;

[0041] Fig.11 It is a side cutaway two-dimensional schematic diagram of a simplified implementation structure of Example 3 of the present scheme;

[0042] Fig.12 This is a schematic diagram of the handrail, column and connecting rod in Example 3 of this solution;

[0043] Fig.13 This is one of the three-dimensional perspective diagrams of the simplified implementation structure of Example 4 of this solution;

[0044] Fig.14 This is the second three-dimensional perspective schematic diagram of the simplified implementation structure of Example 4 of this solution, in which a partial cutaway schematic diagram and an enlarged view of the portion where the connecting rod and the column cooperate are made;

[0045] Fig.15 It is a side cutaway two-dimensional schematic diagram of a simplified implementation structure of Example 4 of the present scheme;

[0046] Fig.16 This is a schematic diagram of the handrail, column and connecting rod in Example 4 of this solution;

[0047] Fig.17 This is one of the three-dimensional perspective diagrams of the simplified implementation structure of Example 5 of this solution;

[0048] Fig.18 This is a schematic diagram of the handrail, column and connecting rod in Example 5 of this solution;

[0049] Fig.19 This is the second three-dimensional perspective schematic diagram of the simplified implementation structure of Example 5 of the present solution, in which a partial cutaway schematic diagram and an enlarged view of the portion where the connecting rod and the column cooperate are made;

[0050] Fig. 20 This is one of the three-dimensional schematic diagrams of the implementation structure when the limiting member of Example 5 of this solution is a bracket;

[0051] Fig.21 It is one of the three-dimensional schematic diagrams of the implementation structure when the limiting member of Example 5 of the present scheme is a bracket. DETAILED DESCRIPTION

[0052] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0053] Example 1

[0054] like Figures 1 to 4As shown in one of the figures, the present embodiment provides an adjustable handrail, comprising a handrail 1 and a column 2, wherein the handrail 1 is arranged horizontally or obliquely; the number of the columns 2 is more than two, and the columns 2 are arranged below the handrail 1 at intervals along the length direction of the handrail 1, the upper end of the column 2 is rotatably connected to the lower side of the handrail 1, and the column 2 can be rotatably connected in the form of a rotating shaft 11 or other connecting components, and the lower end of the column 2 is used to be connected to an external support (such as stairs, the ground) to support the handrail 1; in addition, the adjustable handrail of the present embodiment also includes:

[0055] There are more than one connecting rod 3, and they are arranged between adjacent columns 2. A constraint portion 21 for cooperating with the connecting rod 3 is provided inside the column 2. The constraint portion 21 includes an avoidance opening 22 provided on the column 2 and for the connecting rod 3 to pass through; both ends of the connecting rod 3 respectively pass through the avoidance openings 22 of the column 2 adjacent to it, and are movably connected to the constraint portion 21 of the column 2.

[0056] Among them, both ends of the connecting rod 3 are also connected to limiting members 4, and the limiting members 4 are used to prevent the ends of the connecting rod 3 from escaping from the restraining portion 21; when the column 2 and the handrail 1 rotate relative to each other, the connecting rod 3 can rotate around the limiting members 4 at its ends.

[0057] In order to facilitate the installation of the handrail and to adaptively adjust the connecting rod 3 , the connecting rod 3 in this solution is parallel to the handrail 1 .

[0058] In addition, as a possible implementation, further, the column 2 in this solution is a tubular structure, and the tube wall around the avoidance opening 22, the inner cavity and the part that fits with the connecting rod 3 are set as the constraint part. In this embodiment, the connecting rod 3 is a rectangular tubular structure.

[0059] In order to facilitate the installation of the column 2 at the site of use, as a possible implementation method, further, the bottom of the column 2 described in this solution is also provided with a connecting seat 5, and the connecting seat 5 is used to be fixed to an external support, such as a staircase or the ground where the railing is installed.

[0060] Regarding the number of columns 2 and connecting rods 3, specifically, in this embodiment, two columns 2 are shown, and the number of connecting rods 3 between adjacent columns 2 is three; however, in this embodiment, there may be one, two, etc. connecting rods between adjacent columns 2. When there are more than two connecting rods 3 between adjacent columns 2, the connecting rods 3 are arranged at intervals between adjacent columns 2 from top to bottom.

[0061] Based on the above structure, preferably, the horizontal width of the avoidance opening 22 on the column 2 in this solution is greater than the width of the end of the connecting rod 3 and smaller than the side wall width of the column 2.

[0062] Focus on combination Figure 2 , Figure 3 , Figure 4 As shown, as one of the optional implementation structures of the limiting member 4, preferably, the limiting member 4 in this solution is a limiting pin 41, and its two ends are respectively fixed to the side walls on both sides of the restraining portion 21 of the column 2;

[0063] Correspondingly, in the present embodiment, a limiting groove 31 cooperating with the limiting pin 41 is provided on the end of the connecting rod 3 that passes through the constraint portion 21. The limiting groove 31 is a U-shaped structure, and one end of the U-shaped structure extends along the axial end of the connecting rod 3 and forms an open opening. When the end of the connecting rod 3 passes through the constraint portion 21, the limiting pin 41 enters the limiting groove 31 on the end of the connecting rod 3 from the open opening, so that the connecting rod 3 can be rotatably connected to the limiting pin 41 around the limiting pin 41.

[0064] In this scheme, the end of the connecting rod 3 is rotationally constrained in the constraint portion 21 of the column 2 by the limit pin 41, so that when the adjustable railing of this scheme is installed on stairs or uneven ground, the column 2 and the handrail 1 can rotate relative to each other, so that the adjacent column 2 can adjust its angle with the handrail 1 according to the slope of the installation area. When the column 2 and the handrail 1 rotate relative to each other, the connecting rod 3 will also adaptively follow the rotation, that is, the connecting rod 3 rotates around the connection part with the limit pin 41 to adapt to the installation of the column 2 and the handrail 1. Under the structure of this scheme, the handrail 1, the column 2 and the connecting rod 3 can all be adjusted in angle to adapt to the installation site before the installation is completed. Therefore, the installation efficiency of the installer can be greatly improved. At the same time, the adjustable railing can adapt to a wider range of sites, allowing manufacturers to carry out mass production.

[0065] Example 2

[0066] like Figures 5 to 8 As shown in one of the figures, the present embodiment provides an adjustable handrail, comprising a handrail 1 and a column 2, wherein the handrail 1 is arranged horizontally or obliquely; the number of the columns 2 is more than two, and the columns 2 are arranged below the handrail 1 at intervals along the length direction of the handrail 1, the upper end of the column 2 is rotatably connected to the lower side of the handrail 1, and the column 2 can be rotatably connected in the form of a rotating shaft 11 or other connecting components, and the lower end of the column 2 is used to be connected to an external support (such as stairs, the ground) to support the handrail 1; in addition, the adjustable handrail of the present embodiment also includes:

[0067] There are more than one connecting rod 3, and they are arranged between adjacent columns 2. A constraint portion 21 for cooperating with the connecting rod 3 is provided inside the column 2. The constraint portion 21 includes an avoidance opening 22 provided on the column 2 and for the connecting rod 3 to pass through; both ends of the connecting rod 3 respectively pass through the avoidance openings 22 of the column 2 adjacent to it, and are movably connected to the constraint portion 21 of the column 2.

[0068] Among them, both ends of the connecting rod 3 are also connected to limiting members 4, and the limiting members 4 are used to prevent the ends of the connecting rod 3 from escaping from the restraining portion 21; when the column 2 and the handrail 1 rotate relative to each other, the connecting rod 3 can rotate around the limiting members 4 at its ends.

[0069] In order to facilitate the installation of the handrail and to adaptively adjust the connecting rod 3 , the connecting rod 3 in this solution is parallel to the handrail 1 .

[0070] In addition, as a possible implementation, further, the column 2 in this solution is a tubular structure, and the tube wall around the avoidance opening 22, the inner cavity and the part that fits with the connecting rod 3 are set as the constraint part. In this embodiment, the connecting rod 3 is a rectangular tubular structure.

[0071] In order to facilitate the installation of the column 2 at the site of use, as a possible implementation method, further, the bottom of the column 2 described in this solution is also provided with a connecting seat 5, and the connecting seat 5 is used to be fixed to an external support, such as a staircase or the ground where the railing is installed.

[0072] Regarding the number of columns 2 and connecting rods 3, specifically, in this embodiment, two columns 2 are shown, and the number of connecting rods 3 between adjacent columns 2 is three. In this embodiment, the horizontal width of the avoidance opening 22 on the column 2 is greater than the width of the end of the connecting rod 3, and less than the side wall width of the column 2.

[0073] In this embodiment, most of the implementation structures are substantially the same as those in Embodiment 1, except that the limiting member in this embodiment is different from that in Embodiment 1.

[0074] Focus on combination Figure 6 , Figure 7 , Figure 8 As shown, specifically, as the implementation structure of the limiting member 4 of the embodiment, preferably, the limiting member 4 of the embodiment is a U-shaped spring piece 42, and a limiting protrusion 421 is provided on the side surfaces separated from each other at both ends of the U-shaped spring piece 42;

[0075] Correspondingly, in this embodiment, a receiving cavity 32 is provided on the end of the connecting rod 3 that passes through the constraint portion 21, and the U-shaped spring piece 42 is arranged in the receiving cavity 32. A through hole 33 is provided on one of the opposite side walls of the receiving cavity 32 corresponding to the limiting protrusion 421 of the U-shaped spring piece 42, and the limiting protrusion passes through the receiving cavity 32 through the through hole and is higher than the outer wall of the connecting rod 3.

[0076] On the basis of the above structure, the side walls on both sides of the constraint portion 21 of the column 2 described in this scheme are provided with corresponding limiting holes 23 that cooperate with the limiting protrusion 421. When the end of the connecting rod 3 penetrates into the constraint portion 21, the part of the limiting protrusion 421 that is higher than the outer wall of the connecting rod 3 penetrates into the limiting hole 23, so that the connecting rod 3 can be rotatably constrained in the constraint portion 21.

[0077] In this solution, the end of the connecting rod 3 is rotationally constrained in the constraint portion 21 of the column 2 through the limiting protrusion 421 of the U-shaped spring piece 42 and the limiting hole 23 on the column 2, so that when the adjustable handrail of this solution is installed on stairs or uneven ground, the column 2 and the handrail 1 can be relatively rotated to make the adjacent column 2 adaptively adjust its angle with the handrail 1 according to the slope of the installation area, and when the column 2 and the handrail 1 rotate relative to each other, the connecting rod 3 will also adaptively follow the rotation, that is, the connecting rod 3 rotates around the limiting protrusion between it and the limiting protrusion. The mating part of 421 and the limiting hole 23 is rotated to adapt to the installation of the column 2 and the handrail 1. Compared with Example 1, the U-shaped spring piece 42 of this scheme can be manually installed in the accommodating cavity 32 on the connecting rod 3 during on-site installation, so that the limiting protrusion 421 of the U-shaped spring piece 42 is exposed outside the through hole 33. When the connecting rod 3 penetrates into the constraint part 21, the limiting protrusion 421 is squeezed by the side wall of the constraint part 21 and retracted into the through hole 33 to a certain extent. When the limiting protrusion 421 is opposite to the limiting hole 23, it pops out and penetrates into the limiting hole 23 to complete the matching.

[0078] Example 3

[0079] like Figures 9 to 12 As shown in one, most of the implementation structures of the adjustable handrails in this embodiment are roughly the same as those in embodiment 2. The adjustable handrails include a handrail 1, a column 2, a connecting rod 3, a limiter 4 and a connecting seat 5, and their overall matching structure is also roughly the same, so they will not be described in detail here.

[0080] Different from the solution of the second embodiment, the matching structure between the column 2 of the solution of the present embodiment and the U-shaped spring piece 42 serving as the limiting member 4 is different.

[0081] Focus on combination Fig.10 , Fig.11 , Fig.12As shown, specifically, the limiting member 4 in this solution is a U-shaped spring piece 42 , and a limiting protrusion 421 is provided on the side surfaces at both ends of the U-shaped spring piece 42 .

[0082] Correspondingly, in this embodiment, a receiving cavity 32 is provided on the end of the connecting rod 3 that passes through the constraint portion 21, and the U-shaped spring piece is arranged in the receiving cavity 32. A through hole 33 is provided on one of the opposite side walls of the receiving cavity 32 corresponding to the limiting protrusion of the U-shaped spring piece, and the limiting protrusion 421 passes through the through hole 33 to exit the receiving cavity 32 and is higher than the outer wall of the connecting rod 3.

[0083] In terms of the matching structure with the U-shaped spring piece 42, the lower part of the avoidance opening 22 of the column 2 in this scheme is a shrinkage structure 221, and the width of the shrinkage structure 221 is greater than the width of the end of the connecting rod 3, and less than the sum of the width of the end of the connecting rod 3 and the height of the limiting protrusion 421 above the outer wall of the connecting rod 3; the width of the upper part of the avoidance opening 22 of the column 2 is greater than the sum of the width of the end of the connecting rod 3 and the height of the limiting protrusion 421 above the outer wall of the connecting rod 3.

[0084] On the basis of the above structure, when the connecting rod 3 is installed, the end of the connecting rod 3 is inserted from the upper part of the avoidance opening 22 to the upper part of the constraint part 21, and is constrained and cooperated with the limiting protrusion 421 of the U-shaped spring piece 42 and the shrinkage structure 221 of the avoidance opening 22 located at the lower part of the constraint part 21. That is, when the connecting rod 3 is inserted into the constraint part 21, it is moved down to the lower part of the constraint part 21 due to its own weight or the traction of the installer, so that the limiting protrusion 421 of the U-shaped spring piece 42 protrudes from the side wall of the connecting rod 3 to form a constraint structure to prevent the connecting rod 3 from escaping from the constraint part 21. Under this structure, when the connecting rod 3 is inserted into the constraint part 21, it can not only rotate to a certain extent, but also the connecting rod 3 has a certain space to move along its axial direction.

[0085] Compared with Example 2, when the end of the connecting rod 3 of this scheme cooperates with the constraint portion 21 of the column 2, it is also constrained by the shrinkage structure 221 at the lower part of the avoidance opening 22. In the structure of this embodiment, the end of the connecting rod 3 can not only rotate, but also has a certain axial movement space, so that the connecting rod 3 can have more adaptability when the adjustable railing is installed.

[0086] Example 4

[0087] like Figures 13 to 16As shown in one, most of the implementation structures of the adjustable handrails in this embodiment are roughly the same as those in embodiments 1, 2, and 3. The adjustable handrails include a handrail 1, a column 2, a connecting rod 3, a limiter 4, and a connecting seat 5. The overall matching structure is also roughly the same, so it will not be described in detail here.

[0088] Different from the solutions of the first, second and third embodiments, the structure of the position-limiting member 4 of the solution of the present embodiment and the matching structure of the column 2 and the position-limiting member 4 are different.

[0089] Focus on combination Fig.14 , Fig.15 , Fig.16 As shown, the limiting member 4 of this solution is a limiting rod 43, which is inserted into the end of the connecting rod 3 that penetrates the constraint portion 21, and the two ends of the limiting rod 43 respectively pass through the two sides of the connecting rod 3, and both ends are higher than the outer wall of the connecting rod 3;

[0090] Correspondingly, the lower part of the avoidance opening 22 of the column 2 in this scheme is a shrinkage structure 221, the width of which is greater than the width of the end of the connecting rod 3, and less than the sum of the width of the end of the connecting rod 3 and the height of the two ends of the limiting rod 43 above the outer wall of the connecting rod 3; the width of the upper part of the avoidance opening 22 of the column 2 is greater than the sum of the width of the end of the connecting rod 3 and the height of the two ends of the limiting rod 43 above the outer wall of the connecting rod 3.

[0091] On the basis of the above structure, when the connecting rod 3 is installed, the end of the connecting rod 3 is inserted into the constraint part 21 from the upper part of the avoidance opening 22, and is constrained and cooperated with the shrinkage structure 221 of the avoidance opening 22 located at the lower part of the constraint part 21 through the limiting rod 43; that is, when the connecting rod 3 is inserted into the constraint part 21, it is moved down to the lower part of the constraint part 21 due to its own weight or the traction of the installer, so that the part of the limiting rod 43 protruding from the side wall of the connecting rod 3 forms a constraint structure to prevent the connecting rod 3 from escaping from the constraint part 21. Under this structure, when the connecting rod 3 is inserted into the constraint part 21, it can not only rotate to a certain extent, but also the connecting rod 3 has a certain space to move along its axial direction, so that the adjustable railing can make the connecting rod 3 have more adaptability when being installed.

[0092] Example 5

[0093] like Figures 17 to 21As shown in one of the embodiments, an adjustable handrail includes a handrail 1 and a column 2, wherein the handrail 1 is arranged horizontally or obliquely; the column 2 is more than two and is arranged below the handrail 1 at intervals along the length direction of the handrail 1, the upper end of the column 2 is rotatably connected to the lower side of the handrail 1, and can be rotatably connected in the form of a rotating shaft 11 or other connecting components, and the lower end of the column 2 is used to be connected to an external support (such as stairs, the ground) to support the handrail 1; the adjustable handrail also includes:

[0094] There are more than one connecting rod 3, and they are arranged between adjacent columns 2. A constraint portion 21 for cooperating with the connecting rod 3 is provided inside the column 2. The constraint portion 21 includes an avoidance opening 22 provided on the column 2 and for the connecting rod 3 to pass through; both ends of the connecting rod 3 respectively pass through the avoidance openings 22 of the column 2 adjacent to it, and are movably connected to the constraint portion 21 of the column 2.

[0095] Among them, both ends of the connecting rod 3 are also connected to limiting members 4, and the limiting members 4 are used to prevent the ends of the connecting rod 3 from escaping from the restraining portion 21; when the column 2 and the handrail 1 rotate relative to each other, the connecting rod 3 can rotate around the limiting members 4 at its ends.

[0096] In order to facilitate the installation of the handrail and to adaptively adjust the connecting rod 3 , the connecting rod 3 in this solution is parallel to the handrail 1 .

[0097] In addition, as a possible implementation, further, the column 2 in this solution is a tubular structure, and the tube wall around the avoidance opening 22, the inner cavity and the part that fits with the connecting rod 3 are set as the constraint part. In this embodiment, the connecting rod 3 is a rectangular tubular structure.

[0098] In order to facilitate the installation of the column 2 at the site of use, as a possible implementation method, further, the bottom of the column 2 described in this solution is also provided with a connecting seat 5, and the connecting seat 5 is used to be fixed to an external support, such as a staircase or the ground where the railing is installed.

[0099] Regarding the number of columns 2 and connecting rods 3, specifically, in this embodiment, two columns 2 are shown, and the number of connecting rods 3 between adjacent columns 2 is three; however, in this embodiment, there may be one, two, etc. connecting rods between adjacent columns 2. When there are more than two connecting rods 3 between adjacent columns 2, the connecting rods 3 are arranged at intervals between adjacent columns 2 from top to bottom.

[0100] Based on the above structure, preferably, the horizontal width of the avoidance opening 22 on the column 2 in this solution is greater than the width of the end of the connecting rod 3 and smaller than the side wall width of the column 2.

[0101] In this embodiment, the limiting member 4 includes:

[0102] The bracket 44 is a box-shaped shell structure with an open upper end, which is fixedly arranged at the lower part of the constraint portion 21 of the column 2. The side of the bracket 44 opposite to the avoidance opening 22 of the constraint portion 21 is provided with a penetration opening 441 for the end of the connecting rod 3 to penetrate. The upper part of the bracket 44 is provided with lap grooves 442 extending upward to form an opening on both sides adjacent to the penetration opening 441. The lap grooves 442 are V-shaped or U-shaped structures.

[0103] Correspondingly, in the present embodiment, protrusions 33 are provided on both sides of the end of the connecting rod 3 that penetrates into the constraint portion 21. The protrusions 33 can be formed by a penetration rod that is penetrated into the connecting rod 3, that is, both ends of the penetration rod pass through the connecting rod 3, or a protrusion structure can be directly processed or formed on both sides of the end of the connecting rod 3 to serve as a protrusion. During installation, the end of the connecting rod 3 is penetrated from the upper part of the avoidance opening 22 to the upper part of the constraint portion 21, and is movably overlapped on the overlap groove 442 through the protrusion 33.

[0104] Since the column 2 of the present solution is provided with an avoidance opening 22 for inserting the connecting rod 3, when the adjustable handrail is used outdoors, water may enter the avoidance opening 22, resulting in water accumulation in the column 2, leading to problems such as rust. As a better implementation option, preferably, a water guide plate 443 is obliquely provided at the lower portion of the bracket 44 of the present solution, and the inclined lower side of the water guide plate 443 extends to the outer side surface of the bracket provided with the insertion opening 441 or extends out of the outer side surface provided with the insertion opening 441.

[0105] In order to facilitate the installation of the bracket, the bracket 44 of the present embodiment is provided with a connecting skirt 444 at the lower part of the outer side surface of the through opening 441, and a slot 4441 is formed between the connecting skirt 444 and the outer side surface of the bracket 44 with the through opening 441, and the bracket 44 is plugged into and matched with the lower edge of the avoidance opening 22 through the slot 4441, so that the bracket 44 is plugged and fixed to the lower part of the restraint portion 21 of the column 2.

[0106] In order to facilitate the installation of the bracket 44 , the lower edge of the avoidance opening 22 described in this solution is provided with an installation groove 222 that is plugged into and matched with the slot 4441 .

[0107] On the basis of the above structure, when installing the adjustable handrail of the present scheme, the bracket 44 can be pre-installed in the constraint part 21 on the column 2. When the connecting rod 3 is installed, the end of the connecting rod 3 is inserted into the constraint part 21 from the upper part of the avoidance opening 22 of the column 2, and then inserted into the bracket 44 through the penetration opening 441 of the bracket 44, so that the protrusion 33 is movably overlapped on the overlapping groove 442. Under the cooperation of this structure, the protrusion 33 cooperates with the overlapping groove 442 to form a constraint structure to prevent the connecting rod 3 from escaping from the constraint part 21. Under this structure, when the adjustable handrail is installed, if rainwater enters the constraint part 21 from the avoidance opening 22 or falls into the constraint part 21 of the column under the guidance of the connecting rod 3, the water can be guided out through the water guide plate 443 of the bracket 44 to prevent it from accumulating in the column 2.

[0108] The above descriptions are only some embodiments of the present invention, and do not limit the protection scope of the present invention. Any equivalent device or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An adjustable handrail, comprising a handrail and a column, wherein the handrail is arranged horizontally or obliquely; there are two or more columns, which are arranged below the handrail at intervals along the length direction of the handrail, the upper end of the column is rotatably connected to the lower side of the handrail, and the lower end of the column is used to connect with an external support to support the handrail; characterized in that: The adjustable railing also includes: There are more than one connecting rods, and they are arranged between adjacent columns. A restraining part for cooperating with the connecting rod is arranged in the column, and the restraining part includes an escape opening arranged on the column and for the connecting rod to pass through; both ends of the connecting rod respectively pass through the escape openings of the columns adjacent to them, and are dynamically connected with the restraining part of the column; Wherein, both ends of the connecting rod are connected with limiting members, and the limiting members are used to prevent the ends of the connecting rod from falling out of the restraining part.

2. The adjustable handrail according to claim 1, characterized in that: The connecting rod is parallel to the handrail; When the upright column and the handrail rotate relatively, the connecting rod can rotate along with the limiting piece at the end thereof.

3. The adjustable handrail according to claim 1, characterized in that: The column is a tubular structure, and the tube wall around the opening portion, the inner cavity and the portion that penetrates and cooperates with the connecting rod are set as the restraining part.

4. The adjustable handrail according to claim 1, characterized in that: One, two, three or more connecting rods are arranged between adjacent columns. When there are more than two connecting rods between adjacent columns, the connecting rods are arranged at intervals between adjacent columns from top to bottom.

5. The adjustable handrail according to any one of claims 1 to 4, characterized in that: The horizontal width of the avoidance opening is greater than the width of the end of the connecting rod and smaller than the width of the side wall of the column.

6. The adjustable handrail according to claim 5, characterized in that: The limiting member is a limiting pin, both ends of which are respectively fixed on the side walls on both sides of the restraining part of the column; A limiting groove cooperating with the limiting pin is provided on the end of the connecting rod passing through the constraint part. The limiting groove is a U-shaped structure, and one end of the U-shaped structure extends along the axial end of the connecting rod and forms an open opening. When the end of the connecting rod passes through the constraint part, the limiting pin enters the limiting groove on the end of the connecting rod from the open opening, so that the connecting rod can be rotatably connected around the limiting pin and overlapped on the limiting pin.

7. The adjustable handrail according to claim 5, characterized in that: The limiting member is a U-shaped spring piece, and a limiting protrusion is provided on the side surfaces separated from each other at both ends of the U-shaped spring piece; An accommodating cavity is provided on the end of the connecting rod that penetrates into the restraining portion, the U-shaped spring sheet is arranged in the accommodating cavity, and a through hole is provided on one of the two opposite side walls of the accommodating cavity corresponding to the limiting protrusion of the U-shaped spring sheet, the limiting protrusion passes through the accommodating cavity through the through hole and is higher than the outer side wall of the connecting rod; The column has one of the following structures: (1) The side walls on both sides of the restraining part of the column are provided with corresponding limiting holes that cooperate with the limiting protrusions. When the end of the connecting rod passes through the restraining part, the part of the limiting protrusion that is higher than the outer side wall of the connecting rod passes through the limiting hole, so that the connecting rod can be rotatably restrained in the restraining part; (2) The lower portion of the avoidance opening of the column is a constricted structure, the width of which is greater than the width of the end portion of the connecting rod and less than the sum of the width of the end portion of the connecting rod and the height of the limiting protrusion above the outer wall of the connecting rod; the width of the upper portion of the avoidance opening of the column is greater than the sum of the width of the end portion of the connecting rod and the height of the limiting protrusion above the outer wall of the connecting rod, the end portion of the connecting rod is inserted from the upper portion of the avoidance opening to the upper portion of the constraint portion, and is constrained and cooperated with the limiting protrusion of the U-shaped spring sheet and the constricted structure of the avoidance opening located at the lower portion of the constraint portion.

8. The adjustable handrail according to claim 5, characterized in that: The limiting member is a limiting rod, which is inserted into the end of the connecting rod passing through the restraining portion, and the two ends of the limiting rod respectively pass through the two sides of the connecting rod and are higher than the outer side wall of the connecting rod; The lower part of the avoidance opening of the column is a shrinking structure, the width of which is greater than the width of the end of the connecting rod, and less than the sum of the width of the end of the connecting rod and the height of the two ends of the limiting rod above the outer wall of the connecting rod; the width of the upper part of the avoidance opening of the column is greater than the sum of the width of the end of the connecting rod and the height of the two ends of the limiting rod above the outer wall of the connecting rod, the end of the connecting rod is inserted into the constraint part from the upper part of the avoidance opening, and is constrained and cooperated with the shrinking structure of the avoidance opening located at the lower part of the constraint part through the limiting rod.

9. The adjustable handrail according to claim 5, characterized in that: The limiting member comprises: The bracket is a box-shaped shell structure with an open upper end, which is fixedly arranged at the lower part of the constraint part of the column, and the side of the bracket opposite to the avoidance opening of the constraint part is provided with a penetration opening for the end of the connecting rod to penetrate, and the upper part of the bracket is provided with a lap groove extending upward to form an opening on both sides adjacent to the penetration opening, and the lap groove is a V-shaped or U-shaped structure; The ends of the connecting rod passing through the restraining part are provided with raised parts on both sides, and the ends of the connecting rod pass through the upper part of the avoidance opening to the upper part of the restraining part, and are movably overlapped on the overlapping groove through the raised parts.

10. The adjustable handrail according to claim 9, characterized in that The bracket has one or more of the following structures: (1) A water guide plate is obliquely provided at the lower part of the bracket, and the oblique lower side of the water guide plate extends to the outer side surface of the bracket provided with the through opening or extends out of the outer side surface provided with the through opening; (2) The bracket is provided with a connecting skirt at the lower part of the outer side surface with a through opening, and a slot is formed between the connecting skirt and the outer side surface with the through opening of the bracket. The bracket is plugged into and matched with the lower edge of the avoidance opening through the slot, so that the bracket is plugged and fixed to the lower part of the restraint portion of the column.

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