Threaded connection handrail assembly

Abstract

This utility model relates to the field of handrail technology, specifically a threaded connection handrail assembly, including two connecting plates. Two connecting elbows are symmetrically fixedly arranged on the two connecting plates. A connecting block is fixedly arranged at the upper end of each connecting elbow. A handrail tube is fixedly arranged between the two connecting blocks. An external thread is provided on the outer wall of each connecting block, and an internal thread is provided on the inner wall of each end of the handrail tube. The internal and external threads engage to fix the handrail tube to the connecting blocks. A decorative cover is fitted onto each connecting elbow, and the decorative cover is connected to the connecting plate. In this utility model, the handrail tube can be threadedly connected to the two connecting blocks via the connecting blocks on the connecting elbows. The length of the handrail tube can be selected according to actual installation conditions, thereby adjusting the overall length of the handrail and broadening its applicability.

Description

Technical Field

[0001] This utility model relates to the field of handrail technology, specifically a threaded connection handrail assembly. Background Technology

[0002] Handrails installed on fixed objects are generally used to provide auxiliary support for users, thereby improving their stability. Handrails in the current technology are usually made using one-piece molding technology, which makes the length of the handrail relatively fixed and unable to be adjusted according to the actual installation conditions. Utility Model Content

[0003] The purpose of this utility model is to provide a threaded connection handrail assembly to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution:

[0004] A threaded handrail assembly includes two connecting plates. Two connecting elbows are symmetrically fixed on the two connecting plates. A connecting block is fixedly installed at the upper end of each connecting elbow. A handrail tube is fixedly installed between the two connecting blocks. An external thread is provided on the outer wall of the connecting block. An internal thread is provided on the inner wall of each end of the handrail tube. The internal thread and the external thread engage together to fix the handrail tube on the connecting block. A decorative cover is fitted onto the connecting elbow and is connected to the connecting plate.

[0005] Preferably, the connecting elbow includes two symmetrically arranged semi-circular tube shells, and two semi-circular support blocks are symmetrically arranged inside the two semi-circular tube shells. Two protruding joints are provided on the inner wall of the semi-circular tube shells, and two positioning recesses are provided on the outer wall of the semi-circular support blocks. The two protruding joints are slidably inserted into the two positioning recesses to achieve positioning between the semi-circular tube shells and the semi-circular support blocks. The two semi-circular tube shells and the two semi-circular support blocks are all abutted together. Two mounting holes are symmetrically opened at the upper and lower ends of the two semi-circular support blocks, and a nut sleeve is fixedly connected in each mounting hole.

[0006] Preferably, four limiting protrusions are evenly fixedly connected to the connecting plate, and four limiting holes are evenly opened at the lower ends of the two semi-circular tube shells. When the connecting plate abuts against the semi-circular tube shell, the four limiting protrusions are slidably inserted into one limiting hole. A conical countersunk hole is opened at the center of the connecting plate, and a locking bolt is slidably inserted into the conical countersunk hole. The locking bolt is threadedly connected to the nut sleeve below and presses the connecting plate tightly against the semi-circular tube shell.

[0007] Preferably, four limiting protrusions are evenly fixedly connected to the connecting block, and four limiting holes are evenly opened at the upper ends of the two semi-circular tube shells. When the connecting block abuts against the semi-circular tube shell, the four limiting protrusions are slidably inserted into one limiting hole. A cylindrical countersunk hole is opened at the center of the connecting block, and a locking bolt is slidably inserted into the cylindrical countersunk hole. The locking bolt is threadedly connected to the nut sleeve above and presses the connecting block tightly against the semi-circular tube shell.

[0008] Preferably, the decorative cover is attached to the upper surface of the connecting plate, and three locking blocks are evenly arranged on the bottom surface of the decorative cover. Three limiting slots are opened on the outer wall of the connecting plate, and the three locking blocks are respectively located in one limiting slot. The limiting slots can restrict the decorative cover from moving up and down along the connecting bend.

[0009] Preferably, a washer is provided between the handrail tube and the two semi-circular tube shells.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] In this invention, the handrail tube can be threaded onto two connecting blocks by connecting the connecting block set on the connecting elbow. The length of the handrail tube can be selected according to the actual installation conditions, thereby adjusting the overall length of the handrail and making the handrail more widely applicable. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0013] Figure 2 This is a schematic diagram of the connecting elbow structure in Embodiment 1 of this utility model. Figure 1 ;

[0014] Figure 3 This is a schematic diagram of the connecting elbow structure in Embodiment 1 of this utility model. Figure 2 ;

[0015] Figure 4 This is a schematic diagram of the structure of the handrail tube and connecting block in Embodiment 1 of this utility model;

[0016] Figure 5 This is a schematic diagram of the connecting plate and decorative cover in Embodiment 1 of this utility model;

[0017] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0018] Figure 7 This is a schematic diagram of the overall structure of Embodiment 3 of this utility model;

[0019] Figure 8This is a schematic diagram of the overall structure of Embodiment 4 of this utility model;

[0020] Figure 9 This is a schematic diagram of the overall structure of Embodiment 5 of this utility model;

[0021] In the diagram: 1. Connecting plate; 101. Limiting protrusion one; 102. Conical countersunk hole; 103. Limiting groove; 2. Connecting elbow; 201. Semi-circular tube shell; 2011. Protruding joint; 2012. Limiting hole one; 2013. Limiting hole two; 202. Semi-circular support block; 2021. Positioning recess; 203. Mounting hole; 204. Nut sleeve; 3. Connecting block; 301. External thread; 302. Limiting protrusion two; 303. Columnar countersunk hole; 4. Handrail tube; 401. Internal thread; 5. Decorative cover; 501. Locking block; 6. Locking bolt one; 7. Locking bolt two; 8. Washer; 9. Support bracket one; 10. Support bracket two; 11. Support bracket three; 12. Support bracket four. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: Please refer to Figures 1 to 5 This utility model provides a technical solution:

[0024] A threaded handrail assembly includes two connecting plates 1. Two connecting elbows 2 are symmetrically fixed on the two connecting plates 1. A connecting block 3 is fixedly installed on the upper end of the connecting elbow 2. A handrail tube 4 is fixedly installed between the two connecting blocks 3. An external thread 301 is provided on the outer wall of the connecting block 3. An internal thread 401 is provided on the inner wall of both ends of the handrail tube 4. The internal thread 401 and the external thread 301 are engaged together to fix the handrail tube 4 on the connecting block 3. A decorative cover 5 is sleeved on the connecting elbow 2. The decorative cover 5 is connected to the connecting plate 1.

[0025] In this embodiment, several protrusions are evenly provided on the outer surface of the handrail tube 4. These protrusions can increase the friction between the hand and the handrail tube 4 when the hand grips the handrail tube 4, making the handrail tube 4 easier to grip.

[0026] In this embodiment, the connecting elbow 2 includes two symmetrically arranged semi-circular tube shells 201. Two semi-circular support blocks 202 are symmetrically arranged inside the two semi-circular tube shells 201. Two protruding joints 2011 are provided on the inner wall of the semi-circular tube shells 201. Two positioning recesses 2021 are provided on the outer wall of the semi-circular support blocks 202. The two protruding joints 2011 are slidably inserted into the two positioning recesses 2021 to achieve positioning between the semi-circular tube shells 201 and the semi-circular support blocks 202. The two semi-circular tube shells 201 and the two semi-circular support blocks 202 are all abutted together. Two mounting holes 203 are symmetrically opened at the upper and lower ends of the two semi-circular support blocks 202. A nut sleeve 204 is fixedly connected in each mounting hole 203.

[0027] In this embodiment, four limiting protrusions 101 are uniformly fixedly connected to the connecting plate 1, and four limiting holes 2012 are uniformly opened at the lower ends of the two semi-circular tube shells 201. When the connecting plate 1 abuts against the semi-circular tube shell 201, the four limiting protrusions 101 are slidably inserted into one limiting hole 2012 respectively. A tapered countersunk hole 102 is opened at the center of the connecting plate 1, and a locking bolt 6 is slidably inserted into the tapered countersunk hole 102. The locking bolt 6 is threadedly connected to the nut sleeve 204 below and presses the connecting plate 1 tightly onto the semi-circular tube shell 201.

[0028] In this embodiment, four limiting protrusions 302 are uniformly fixedly connected to the connecting block 3, and four limiting holes 2013 are uniformly opened at the upper ends of the two semi-circular tube shells 201. When the connecting block 3 abuts against the semi-circular tube shell 201, the four limiting protrusions 302 are slidably inserted into one limiting hole 2013 respectively. A cylindrical countersunk hole 303 is opened at the center of the connecting block 3, and a locking bolt 7 is slidably inserted into the cylindrical countersunk hole 303. The locking bolt 7 is threadedly connected to the nut sleeve 204 above and presses the connecting block 3 tightly onto the semi-circular tube shell 201.

[0029] In this embodiment, when the limiting protrusion 101 is located in the limiting hole 2012 and the limiting protrusion 302 is located in the limiting hole 2013, both can restrict the two adjacent semi-circular tube shells 201 from separating from each other. Furthermore, the limitation of the limiting hole 2013 on the limiting protrusion 302 can also prevent the connecting block 3 from being rotated along with the handrail tube 4 when the handrail tube 4 rotates on the connecting block 3.

[0030] In this embodiment, the decorative cover 5 is attached to the upper surface of the connecting plate 1. Three locking blocks 501 are evenly arranged on the bottom surface of the decorative cover 5. Three limiting slots 103 are opened on the outer wall of the connecting plate 1. The three locking blocks 501 are respectively located in one limiting slot 103. The limiting slot 103 can restrict the decorative cover 5 from moving upward along the connecting elbow 2.

[0031] In this embodiment, a washer 8 is provided between the handrail tube 4 and the two semi-circular tube shells 201.

[0032] Example 2: Please refer to Figure 6 A threaded handrail assembly includes two connecting plates 1. Two connecting elbows 2 are symmetrically fixed on the two connecting plates 1. A connecting block 3 is fixedly fixed on the upper end of each connecting elbow 2. A handrail tube 4 is fixedly fixed on each connecting block 3. An external thread 301 is provided on the outer wall of the connecting block 3. An internal thread 401 is provided on the inner wall of each end of the handrail tube 4. The internal thread 401 and the external thread 301 are engaged to fix the handrail tube 4 on the connecting block 3. A support bracket 9 is provided between the two handrail tubes 4. The support bracket 9 is threadedly connected to the two handrail tubes 4. The axes of the two handrail tubes 4 are the same. A decorative cover 5 is sleeved on the connecting elbow 2. The decorative cover 5 is connected to the connecting plate 1.

[0033] In this embodiment, several protrusions are evenly provided on the outer surface of the handrail tube 4. These protrusions can increase the friction between the hand and the handrail tube 4 when the hand grips the handrail tube 4, making the handrail tube 4 easier to grip.

[0034] In this embodiment, the connecting elbow 2 includes two symmetrically arranged semi-circular tube shells 201. Two semi-circular support blocks 202 are symmetrically arranged inside the two semi-circular tube shells 201. Two protruding joints 2011 are provided on the inner wall of the semi-circular tube shells 201. Two positioning recesses 2021 are provided on the outer wall of the semi-circular support blocks 202. The two protruding joints 2011 are slidably inserted into the two positioning recesses 2021 to achieve positioning between the semi-circular tube shells 201 and the semi-circular support blocks 202. The two semi-circular tube shells 201 and the two semi-circular support blocks 202 are all abutted together. Two mounting holes 203 are symmetrically opened at the upper and lower ends of the two semi-circular support blocks 202. A nut sleeve 204 is fixedly connected in each mounting hole 203.

[0035] In this embodiment, four limiting protrusions 101 are uniformly fixedly connected to the connecting plate 1, and four limiting holes 2012 are uniformly opened at the lower ends of the two semi-circular tube shells 201. When the connecting plate 1 abuts against the semi-circular tube shell 201, the four limiting protrusions 101 are slidably inserted into one limiting hole 2012 respectively. A tapered countersunk hole 102 is opened at the center of the connecting plate 1, and a locking bolt 6 is slidably inserted into the tapered countersunk hole 102. The locking bolt 6 is threadedly connected to the nut sleeve 204 below and presses the connecting plate 1 tightly onto the semi-circular tube shell 201.

[0036] In this embodiment, four limiting protrusions 302 are uniformly fixedly connected to the connecting block 3, and four limiting holes 2013 are uniformly opened at the upper ends of the two semi-circular tube shells 201. When the connecting block 3 abuts against the semi-circular tube shell 201, the four limiting protrusions 302 are slidably inserted into one limiting hole 2013 respectively. A cylindrical countersunk hole 303 is opened at the center of the connecting block 3, and a locking bolt 7 is slidably inserted into the cylindrical countersunk hole 303. The locking bolt 7 is threadedly connected to the nut sleeve 204 above and presses the connecting block 3 tightly onto the semi-circular tube shell 201.

[0037] In this embodiment, when the limiting protrusion 101 is located in the limiting hole 2012 and the limiting protrusion 302 is located in the limiting hole 2013, both can restrict the two adjacent semi-circular tube shells 201 from separating from each other. Furthermore, the limitation of the limiting hole 2013 on the limiting protrusion 302 can also prevent the connecting block 3 from being rotated along with the handrail tube 4 when the handrail tube 4 rotates on the connecting block 3.

[0038] In this embodiment, the decorative cover 5 is attached to the upper surface of the connecting plate 1. Three locking blocks 501 are evenly arranged on the bottom surface of the decorative cover 5. Three limiting slots 103 are opened on the outer wall of the connecting plate 1. The three locking blocks 501 are respectively located in one limiting slot 103. The limiting slot 103 can restrict the decorative cover 5 from moving upward along the connecting elbow 2.

[0039] In this embodiment, a washer 8 is provided between the handrail tube 4 and the two semi-circular tube shells 201.

[0040] Example 3: Please refer to Figure 7A threaded handrail assembly includes two connecting plates 1, each with a connecting elbow 2 fixedly mounted on it. A connecting block 3 is fixedly mounted on the upper end of each connecting elbow 2. A handrail tube 4 is fixedly mounted on each connecting block 3. An external thread 301 is provided on the outer wall of the connecting block 3, and an internal thread 401 is provided on the inner walls of both ends of the handrail tube 4. The internal thread 401 and the external thread 301 engage together to fix the handrail tube 4 on the connecting block 3. A second support bracket 10 is provided between the two handrail tubes 4, and the second support bracket 10 is threadedly connected to the two handrail tubes 4. The axes of the two handrail tubes 4 are perpendicular. A decorative cover 5 is sleeved on the connecting elbow 2, and the decorative cover 5 is connected to the connecting plate 1.

[0041] In this embodiment, several protrusions are evenly provided on the outer surface of the handrail tube 4. These protrusions can increase the friction between the hand and the handrail tube 4 when the hand grips the handrail tube 4, making the handrail tube 4 easier to grip.

[0042] In this embodiment, the connecting elbow 2 includes two symmetrically arranged semi-circular tube shells 201. Two semi-circular support blocks 202 are symmetrically arranged inside the two semi-circular tube shells 201. Two protruding joints 2011 are provided on the inner wall of the semi-circular tube shells 201. Two positioning recesses 2021 are provided on the outer wall of the semi-circular support blocks 202. The two protruding joints 2011 are slidably inserted into the two positioning recesses 2021 to achieve positioning between the semi-circular tube shells 201 and the semi-circular support blocks 202. The two semi-circular tube shells 201 and the two semi-circular support blocks 202 are all abutted together. Two mounting holes 203 are symmetrically opened at the upper and lower ends of the two semi-circular support blocks 202. A nut sleeve 204 is fixedly connected in each mounting hole 203.

[0043] In this embodiment, four limiting protrusions 101 are uniformly fixedly connected to the connecting plate 1, and four limiting holes 2012 are uniformly opened at the lower ends of the two semi-circular tube shells 201. When the connecting plate 1 abuts against the semi-circular tube shell 201, the four limiting protrusions 101 are slidably inserted into one limiting hole 2012 respectively. A tapered countersunk hole 102 is opened at the center of the connecting plate 1, and a locking bolt 6 is slidably inserted into the tapered countersunk hole 102. The locking bolt 6 is threadedly connected to the nut sleeve 204 below and presses the connecting plate 1 tightly onto the semi-circular tube shell 201.

[0044] In this embodiment, four limiting protrusions 302 are uniformly fixedly connected to the connecting block 3, and four limiting holes 2013 are uniformly opened at the upper ends of the two semi-circular tube shells 201. When the connecting block 3 abuts against the semi-circular tube shell 201, the four limiting protrusions 302 are slidably inserted into one limiting hole 2013 respectively. A cylindrical countersunk hole 303 is opened at the center of the connecting block 3, and a locking bolt 7 is slidably inserted into the cylindrical countersunk hole 303. The locking bolt 7 is threadedly connected to the nut sleeve 204 above and presses the connecting block 3 tightly onto the semi-circular tube shell 201.

[0045] In this embodiment, when the limiting protrusion 101 is located in the limiting hole 2012 and the limiting protrusion 302 is located in the limiting hole 2013, both can restrict the two adjacent semi-circular tube shells 201 from separating from each other. Furthermore, the limitation of the limiting hole 2013 on the limiting protrusion 302 can also prevent the connecting block 3 from being rotated along with the handrail tube 4 when the handrail tube 4 rotates on the connecting block 3.

[0046] In this embodiment, the decorative cover 5 is attached to the upper surface of the connecting plate 1. Three locking blocks 501 are evenly arranged on the bottom surface of the decorative cover 5. Three limiting slots 103 are opened on the outer wall of the connecting plate 1. The three locking blocks 501 are respectively located in one limiting slot 103. The limiting slot 103 can restrict the decorative cover 5 from moving upward along the connecting elbow 2.

[0047] In this embodiment, a washer 8 is provided between the handrail tube 4 and the two semi-circular tube shells 201.

[0048] Example 4: Please refer to Figure 8 A threaded handrail assembly includes two connecting plates 1, each with a connecting elbow 2 fixedly mounted on it. A connecting block 3 is fixedly mounted on the upper end of each connecting elbow 2. A handrail tube 4 is fixedly mounted on each connecting block 3. An external thread 301 is provided on the outer wall of the connecting block 3, and an internal thread 401 is provided on the inner walls of both ends of the handrail tube 4. The internal thread 401 and the external thread 301 engage together to fix the handrail tube 4 on the connecting block 3. A support bracket 3 11 is provided between the two handrail tubes 4, and the support bracket 3 11 is threadedly connected to the two handrail tubes 4. The included angle between the axes of the two handrail tubes 4 is 135°. A decorative cover 5 is sleeved on the connecting elbow 2, and the decorative cover 5 is connected to the connecting plate 1.

[0049] In this embodiment, several protrusions are evenly provided on the outer surface of the handrail tube 4. These protrusions can increase the friction between the hand and the handrail tube 4 when the hand grips the handrail tube 4, making the handrail tube 4 easier to grip.

[0050] In this embodiment, the connecting elbow 2 includes two symmetrically arranged semi-circular tube shells 201. Two semi-circular support blocks 202 are symmetrically arranged inside the two semi-circular tube shells 201. Two protruding joints 2011 are provided on the inner wall of the semi-circular tube shells 201. Two positioning recesses 2021 are provided on the outer wall of the semi-circular support blocks 202. The two protruding joints 2011 are slidably inserted into the two positioning recesses 2021 to achieve positioning between the semi-circular tube shells 201 and the semi-circular support blocks 202. The two semi-circular tube shells 201 and the two semi-circular support blocks 202 are all abutted together. Two mounting holes 203 are symmetrically opened at the upper and lower ends of the two semi-circular support blocks 202. A nut sleeve 204 is fixedly connected in each mounting hole 203.

[0051] In this embodiment, four limiting protrusions 101 are uniformly fixedly connected to the connecting plate 1, and four limiting holes 2012 are uniformly opened at the lower ends of the two semi-circular tube shells 201. When the connecting plate 1 abuts against the semi-circular tube shell 201, the four limiting protrusions 101 are slidably inserted into one limiting hole 2012 respectively. A tapered countersunk hole 102 is opened at the center of the connecting plate 1, and a locking bolt 6 is slidably inserted into the tapered countersunk hole 102. The locking bolt 6 is threadedly connected to the nut sleeve 204 below and presses the connecting plate 1 tightly onto the semi-circular tube shell 201.

[0052] In this embodiment, four limiting protrusions 302 are uniformly fixedly connected to the connecting block 3, and four limiting holes 2013 are uniformly opened at the upper ends of the two semi-circular tube shells 201. When the connecting block 3 abuts against the semi-circular tube shell 201, the four limiting protrusions 302 are slidably inserted into one limiting hole 2013 respectively. A cylindrical countersunk hole 303 is opened at the center of the connecting block 3, and a locking bolt 7 is slidably inserted into the cylindrical countersunk hole 303. The locking bolt 7 is threadedly connected to the nut sleeve 204 above and presses the connecting block 3 tightly onto the semi-circular tube shell 201.

[0053] In this embodiment, when the limiting protrusion 101 is located in the limiting hole 2012 and the limiting protrusion 302 is located in the limiting hole 2013, both can restrict the two adjacent semi-circular tube shells 201 from separating from each other. Furthermore, the limitation of the limiting hole 2013 on the limiting protrusion 302 can also prevent the connecting block 3 from being rotated along with the handrail tube 4 when the handrail tube 4 rotates on the connecting block 3.

[0054] In this embodiment, the decorative cover 5 is attached to the upper surface of the connecting plate 1. Three locking blocks 501 are evenly arranged on the bottom surface of the decorative cover 5. Three limiting slots 103 are opened on the outer wall of the connecting plate 1. The three locking blocks 501 are respectively located in one limiting slot 103. The limiting slot 103 can restrict the decorative cover 5 from moving upward along the connecting elbow 2.

[0055] In this embodiment, a washer 8 is provided between the handrail tube 4 and the two semi-circular tube shells 201.

[0056] Example 5: Please refer to Figure 9 A threaded handrail assembly includes three connecting plates 1, each with a connecting elbow 2 fixedly mounted on it. A connecting block 3 is fixedly mounted on the upper end of each connecting elbow 2. A handrail tube 4 is fixedly mounted on each connecting block 3. An external thread 301 is provided on the outer wall of each connecting block 3, and an internal thread 401 is provided on the inner walls of both ends of each handrail tube 4. The internal thread 401 engages with the external thread 301 to fix the handrail tube 4 to the connecting block 3. A support bracket 4 12 is provided between the three handrail tubes 4, and the support bracket 4 12 is threadedly connected to the three handrail tubes 4. The middle handrail tube 4 is perpendicular to the axis of the two side handrail tubes 4. A decorative cover 5 is fitted onto the connecting elbow 2, and the decorative cover 5 is connected to the connecting plate 1.

[0057] In this embodiment, several protrusions are evenly provided on the outer surface of the handrail tube 4. These protrusions can increase the friction between the hand and the handrail tube 4 when the hand grips the handrail tube 4, making the handrail tube 4 easier to grip.

[0058] In this embodiment, the connecting elbow 2 includes two symmetrically arranged semi-circular tube shells 201. Two semi-circular support blocks 202 are symmetrically arranged inside the two semi-circular tube shells 201. Two protruding joints 2011 are provided on the inner wall of the semi-circular tube shells 201. Two positioning recesses 2021 are provided on the outer wall of the semi-circular support blocks 202. The two protruding joints 2011 are slidably inserted into the two positioning recesses 2021 to achieve positioning between the semi-circular tube shells 201 and the semi-circular support blocks 202. The two semi-circular tube shells 201 and the two semi-circular support blocks 202 are all abutted together. Two mounting holes 203 are symmetrically opened at the upper and lower ends of the two semi-circular support blocks 202. A nut sleeve 204 is fixedly connected in each mounting hole 203.

[0059] In this embodiment, four limiting protrusions 101 are uniformly fixedly connected to the connecting plate 1, and four limiting holes 2012 are uniformly opened at the lower ends of the two semi-circular tube shells 201. When the connecting plate 1 abuts against the semi-circular tube shell 201, the four limiting protrusions 101 are slidably inserted into one limiting hole 2012 respectively. A tapered countersunk hole 102 is opened at the center of the connecting plate 1, and a locking bolt 6 is slidably inserted into the tapered countersunk hole 102. The locking bolt 6 is threadedly connected to the nut sleeve 204 below and presses the connecting plate 1 tightly onto the semi-circular tube shell 201.

[0060] In this embodiment, four limiting protrusions 302 are uniformly fixedly connected to the connecting block 3, and four limiting holes 2013 are uniformly opened at the upper ends of the two semi-circular tube shells 201. When the connecting block 3 abuts against the semi-circular tube shell 201, the four limiting protrusions 302 are slidably inserted into one limiting hole 2013 respectively. A cylindrical countersunk hole 303 is opened at the center of the connecting block 3, and a locking bolt 7 is slidably inserted into the cylindrical countersunk hole 303. The locking bolt 7 is threadedly connected to the nut sleeve 204 above and presses the connecting block 3 tightly onto the semi-circular tube shell 201.

[0061] In this embodiment, when the limiting protrusion 101 is located in the limiting hole 2012 and the limiting protrusion 302 is located in the limiting hole 2013, both can restrict the two adjacent semi-circular tube shells 201 from separating from each other. Furthermore, the limitation of the limiting hole 2013 on the limiting protrusion 302 can also prevent the connecting block 3 from being rotated along with the handrail tube 4 when the handrail tube 4 rotates on the connecting block 3.

[0062] In this embodiment, the decorative cover 5 is attached to the upper surface of the connecting plate 1. Three locking blocks 501 are evenly arranged on the bottom surface of the decorative cover 5. Three limiting slots 103 are opened on the outer wall of the connecting plate 1. The three locking blocks 501 are respectively located in one limiting slot 103. The limiting slot 103 can restrict the decorative cover 5 from moving upward along the connecting elbow 2.

[0063] In this embodiment, a washer 8 is provided between the handrail tube 4 and the two semi-circular tube shells 201.

[0064] The installation process for this type of threaded handrail assembly is as follows:

[0065] During installation, first take a semi-circular support block 202 and a semi-circular tube shell 201. Then, align the positioning recess on the semi-circular support block 202 with the protruding joint 2011 on the semi-circular tube shell 201, and pinch the semi-circular support block 202 and the semi-circular tube shell 201 together. Similarly, assemble the other half of the semi-circular support block 202 and the semi-circular tube shell 201. Then, place two nut sleeves 204 into the half of the mounting holes 203 at both ends of the semi-circular support block 202. Finally, assemble the two assembled semi-circular support blocks 202 with the semi-circular tube. During assembly, the nut sleeves 204 are used for positioning.

[0066] Then, the connecting plate 1 is pressed against the lower end of the semi-circular tube shell 201 and the limiting protrusion 101 is inserted into the limiting hole 2012. Then, the locking bolt 6 is inserted into the conical countersunk hole 102 on the connecting plate 1 and the locking bolt 6 is screwed into the nut sleeve 204 to press the connecting plate 1 tightly onto the semi-circular tube shell 201. Then, the connecting block 3 is inserted into the upper end of the semi-circular tube shell 201 and the limiting protrusion 202 is inserted into the limiting hole 2013. The locking bolt 27 is inserted into the cylindrical countersunk hole 303 on the connecting block 3 and the locking bolt 27 is screwed into the nut sleeve 204 to press the connecting block 3 tightly onto the semi-circular tube shell 201.

[0067] Then, put the decorative cover 5 onto the connecting elbow 2, then put the two washers 8 onto the two connecting blocks 3, and then screw the handrail tube 4 and the two connecting blocks 3 together. The washers 8 are located between the handrail tube 4 and the semi-circular tube shell 201. Finally, the handrail can be fixed in the required position by fixing the connecting plate 1. After fixing, move the decorative cover 5 to make it stick to the connecting plate 1, and then rotate the decorative cover 5 so that the locking block 501 on the decorative cover 5 enters the limiting groove 103 on the connecting plate 1, so that the decorative cover 5 cannot move and completely covers the connecting plate 1. At this time, all the installation is completed.

[0068] When the length of a single handrail tube 4 is insufficient, two handrail tubes 4 can be connected by support bracket 1 9 to extend the handrail length. When the installation of the handrail needs to meet requirements such as verticality, a 135° angle, and a T-junction, two handrail tubes 4 can be connected by support bracket 2 10, support bracket 3 1, or support bracket 4 12 to meet the requirements.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. Threaded handrail assembly comprising two connecting plates 1, characterized in that: Two connecting elbows (2) are symmetrically fixed on the two connecting plates (1). A connecting block (3) is fixedly installed on the upper end of the connecting elbow (2). A handrail tube (4) is fixedly installed between the two connecting blocks (3). An external thread (301) is provided on the outer wall of the connecting block (3). An internal thread (401) is provided on the inner wall of both ends of the handrail tube (4). The internal thread (401) and the external thread (301) are engaged together to fix the handrail tube (4) on the connecting block (3). A decorative cover (5) is sleeved on the connecting elbow (2). The decorative cover (5) is connected to the connecting plate (1).

2. The threaded connection handrail assembly of claim 1, wherein: The connecting elbow (2) includes two symmetrically arranged semi-circular tube shells (201). Two semi-circular support blocks (202) are symmetrically arranged inside the two semi-circular tube shells (201). Two protruding joints (2011) are provided on the inner wall of the semi-circular tube shells (201). Two positioning recesses (2021) are provided on the outer wall of the semi-circular support blocks (202). The two protruding joints (2011) are slidably inserted into the two positioning recesses (2021) to achieve positioning between the semi-circular tube shells (201) and the semi-circular support blocks (202). The two semi-circular tube shells (201) and the two semi-circular support blocks (202) are all in contact with each other. Two mounting holes (203) are symmetrically opened at the upper and lower ends of the two semi-circular support blocks (202). A nut sleeve (204) is fixedly connected in each mounting hole (203).

3. The threaded connection handrail assembly of claim 2, wherein: Four limiting protrusions (101) are evenly fixedly connected on the connecting plate (1). Four limiting holes (2012) are evenly opened at the lower ends of the two semi-circular tube shells (201). When the connecting plate (1) abuts against the semi-circular tube shell (201), the four limiting protrusions (101) are slidably inserted into one limiting hole (2012) respectively. A conical countersunk hole (102) is opened at the center of the connecting plate (1). A locking bolt (6) is slidably inserted into the conical countersunk hole (102). The locking bolt (6) is threadedly connected to the nut sleeve (204) below and presses the connecting plate (1) tightly onto the semi-circular tube shell (201).

4. The threaded connection handrail assembly of claim 2, wherein: Four limiting protrusions (302) are evenly fixedly connected to the connecting block (3). Four limiting holes (2013) are evenly opened at the upper ends of the two semi-circular tube shells (201). When the connecting block (3) abuts against the semi-circular tube shell (201), the four limiting protrusions (302) are slidably inserted into one limiting hole (2013). A cylindrical countersunk hole (303) is opened at the center of the connecting block (3). A locking bolt (7) is slidably inserted into the cylindrical countersunk hole (303). The locking bolt (7) is threadedly connected to the nut sleeve (204) above and presses the connecting block (3) tightly onto the semi-circular tube shell (201).

5. The threaded connection handrail assembly of claim 1, wherein: The decorative cover (5) is attached to the upper surface of the connecting plate (1). Three locking blocks (501) are evenly arranged on the bottom surface of the decorative cover (5). Three limiting slots (103) are opened on the outer wall of the connecting plate (1). The three locking blocks (501) are respectively located in one limiting slot (103). The limiting slot (103) can restrict the decorative cover (5) from moving upward along the connecting elbow (2).

6. The threaded connection handrail assembly of claim 2, wherein: A washer (8) is provided between the handrail tube (4) and the two semi-circular tube shells (201).

Images