Armrest frame with adjustable position

Abstract

The utility model provides a position adjustable armrest frame, which comprises a base and an armrest box, the base is connected with the armrest box, a height adjusting mechanism is arranged between the base and the armrest box, the height adjusting mechanism comprises a sliding plate, a driving assembly is arranged on the sliding plate, the armrest box is provided with a moving plate, and the moving plate is connected with the base. A horizontal adjusting mechanism is arranged between the movable plate and the sliding plate, the movable plate and the sliding plate are connected in a sliding mode, the structure is firm, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically to a handrail with an adjustable position. Background Technology

[0002] In engineering vehicles, such as bulldozers, to improve driver comfort and work efficiency, armrest boxes are usually installed in the cab. The armrest box not only provides space for storing items but also supports the arm and reduces fatigue. Considering that drivers of different heights may need different armrest heights and positions, the armrest box is designed to be adjustable, allowing the driver to easily adjust the armrest height according to personal preferences and body size. In addition, while adjusting the height of the armrest box, it also has a horizontal adjustment function, allowing the driver to move the armrest box back and forth to accommodate different arm span requirements. To ensure the stability and safety of the armrest box when adjusting its height and horizontal position, a reliable adjustment device structure is required to ensure the stability and reliability of the armrest box under various working conditions.

[0003] For example, patent application number 202220504845.4, published on June 17, 2022, discloses an armrest, a seat, and engineering machinery, belonging to the field of engineering machinery technology. The armrest includes: a base; an armrest box; a lifting mechanism connected to the armrest box, the lifting mechanism being able to adjust the vertical position of the armrest box; and a horizontal adjustment mechanism disposed between the armrest box and the lifting mechanism, or between the lifting mechanism and the base, the horizontal adjustment mechanism being able to adjust the horizontal position of the armrest box. This utility model provides an armrest that uses a lifting mechanism to adjust the vertical position of the armrest box and a horizontal adjustment mechanism to adjust the horizontal position of the armrest box. Therefore, passengers can adjust the height and fore-aft position of the armrest according to their needs, meeting their comfort requirements.

[0004] The above literature describes adjusting the angle between two hinged rods via a drive mechanism to adjust the height of the top plate. When the handrail height is adjusted to its highest point, the angle between the two rods is at its smallest. At this point, when the same force is applied to the handrail, due to the small angle between the two rods, which are connected by a hinge, if a horizontal adjustment mechanism is installed to increase the load on the lifting mechanism, the connection must remain stable under the load. However, the hinged joint of the two rods may loosen under long-term load, leading to a loose handrail and potentially causing accidents. Furthermore, when the handrail box rises to its moving height during the lifting process, the horizontal adjustment mechanism is only fixed to the lifting mechanism, causing the center of gravity of the entire handrail box to shift upwards. Since there is no limiting mechanism between the lifting mechanism and the horizontal adjustment mechanism, the stability of the lifting process cannot be guaranteed, and the structure is complex. Summary of the Invention

[0005] This invention provides a handrail with an adjustable position, which has a simple structure and good lifting stability.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: an adjustable handrail frame, comprising a base and a handrail box, wherein a height adjustment mechanism is provided between the base and the handrail box, the height adjustment mechanism comprising a sliding plate, the upper end of the sliding plate being fixedly connected to the handrail box, a driving assembly being provided on the base, the driving assembly being fixedly connected to the sliding plate and driving the sliding plate to move up and down, a movable plate being provided in the handrail box, a horizontal adjustment mechanism being provided between the movable plate and the sliding plate, the horizontal adjustment mechanism driving the movable plate and the sliding plate to slide together, a limiting assembly being provided between the movable plate and the sliding plate, the limiting assembly being connected to the movable plate, and the limiting assembly being connected to the sliding plate in an opening and closing manner; when the limiting assembly is opened and connected to the sliding plate, the horizontal adjustment mechanism drives the movable plate to move horizontally on the sliding plate.

[0007] The above configuration includes an armrest box on the base, and a sliding plate between the base and the armrest box. The sliding plate is connected to the armrest box. When the armrest box needs to move up and down, the limiting component is closed, making the sliding plate and the moving plate a single unit through the limiting component, and limiting the sliding plate. This allows the sliding plate to move up and down under the drive component, which in turn moves the moving plate and the armrest box, thus improving the reliability of lifting. When horizontal movement is required, the limiting component is opened, preventing the moving plate and the sliding plate from connecting. The horizontal adjustment mechanism then drives the moving plate to slide on the sliding plate to achieve horizontal movement. Horizontal and vertical movement can be achieved using only the sliding plate, the moving plate, the drive component, and the horizontal adjustment mechanism, resulting in a simple structure.

[0008] Furthermore, the drive assembly includes a drive rod, the output end of which is fixedly connected to a sliding plate. A first guide rod is provided on one side of the drive rod, and the first guide rod is fixedly connected to the sliding plate. A first fixing plate and a second fixing plate are respectively provided on both sides of the base. The first fixing plate has a notch, and a universal joint is fitted onto the notch. The universal joint is slidably connected to the first guide rod.

[0009] With the above configuration, when the drive rod drives the sliding plate to move, the first guide rod can move along the universal joint. The universal joint allows the first guide rod to be adjusted in multiple directions, thereby providing a buffer for the first guide rod during movement. Even under external impact or vibration, the first guide rod can maintain smooth movement. The universal joint and the first guide rod are slidably connected, which can maintain the relative position between the sliding plate and the base.

[0010] Furthermore, a third fixing plate is connected between the first fixing plate and the second fixing plate. The third fixing plate is provided with a fixing seat and a guide sleeve. The fixing seat is connected to one end of the drive rod, and a second guide rod is provided on the other side of the drive rod. The second guide rod is slidably connected to the guide sleeve, and the second guide rod sliding plate is fixedly connected.

[0011] With the above configuration, when the output shaft of the drive rod drives the sliding plate to move, the second guide rod can move along the guide sleeve to guide the movement of the sliding plate, so that the movement of the sliding plate will not deviate from the predetermined trajectory. The sliding connection between the second guide rod and the guide sleeve can maintain the relative position of the sliding plate and the base.

[0012] Furthermore, the drive rod output shaft extends and retracts along the vertical direction of the sliding plate.

[0013] In the above configuration, one end of the drive rod output shaft is connected to the fixed base. When the drive rod output shaft drives the sliding plate to move, the fixed base bears the weight of the sliding plate, and the end of the drive rod away from the output shaft moves, thereby driving the sliding plate to move.

[0014] Furthermore, a support platform is provided on the sliding plate, and the support platform abuts against the moving plate.

[0015] The armrest box is equipped with a movable plate, and a support platform is provided on the sliding plate. The support platform and the movable plate can abut against each other to provide support for the armrest box.

[0016] Furthermore, the horizontal adjustment mechanism includes a fixed sleeve and a third guide rod. The fixed sleeve is fixedly mounted on the upper side of the sliding plate, and the third guide rod is mounted on the moving plate. The third guide rod is slidably connected to the fixed sleeve.

[0017] The above configuration allows the moving plate to slide horizontally relative to the sliding plate along the fixed sleeve via the third guide rod. The moving plate is connected to the armrest box, which in turn allows the armrest box to move horizontally relative to the sliding plate. The horizontal movement of the armrest box relative to the sliding plate can be achieved by pushing the armrest box.

[0018] Furthermore, the limiting component includes a limiting rod and a positioning plate. The positioning plate is disposed on the sliding plate and has two or more positioning cavities. The moving plate is provided with an ear plate. The limiting rod is hinged to the ear plate. A limiting block is provided on the side of the positioning plate corresponding to the limiting rod. The limiting block is matched with the positioning cavity.

[0019] In the above configuration, a positioning plate is provided on one side of the sliding plate, and a positioning cavity is provided on the positioning plate. An ear plate is connected to one side of the moving plate, and a limit plate is connected to the ear plate. The limit plate is provided with a limit block. When the limit rod is moved so that the limit block moves away from the positioning cavity, the moving plate can move relative to the sliding plate. When the limit rod is moved so that the limit block is fitted into the positioning cavity, the moving plate and the sliding plate cannot move relative to each other, thereby completing the limiting between the limit plate and the sliding plate.

[0020] Furthermore, the armrest box includes an upper cover and a lower cover. The lower cover is provided with a front bottom plate, and the front bottom plate is provided with an elastic element. The front bottom plate is connected to a limiting rod through the elastic element. The upper cover has a through hole on one side, and the limiting rod passes through the through hole.

[0021] The above configuration involves connecting the limit rod to the front base plate via an elastic element on one side. When the limit rod is moved, the elastic element extends and deforms, causing the limit block to move away from the positioning cavity. The moving plate and the sliding plate can then move relative to each other. When the limit rod is not subjected to external force, the elastic element returns to its original shape, causing the limit rod to move. This allows the limit block to be fitted into the positioning cavity, preventing relative displacement between the moving plate and the sliding plate. Furthermore, a through hole extends from one side of the stop rod, allowing the limit rod to be operated from the outside of the armrest box.

[0022] Furthermore, one side panel of the lower cover is a movable plate.

[0023] With the above configuration, the upper and lower covers are fixedly connected, and the lower cover is equipped with a movable plate. External force can be applied to the armrest box to move the movable plate, making operation convenient.

[0024] Furthermore, a handrail frame is provided on the upper side of the handrail box.

[0025] The above settings provide hand support for the driver and generate horizontal driving force. Attached Figure Description

[0026] Figure 1 This is the front view of the present invention.

[0027] Figure 2 This utility model contains partial explosion images. Figure 1 .

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0029] Figure 4 This is the front view of the base in this utility model.

[0030] Figure 5 Partial explosion in this utility model Figure 2 .

[0031] Figure 6 for Figure 5 Enlarged view of section B in the middle.

[0032] Figure 7 This is the front view of the sliding plate in this utility model.

[0033] Figure 8 for Figure 7 Enlarged view of point C.

[0034] Figure 9 This is an exploded view of the handrail in this utility model.

[0035] Figure 10 Partial explosion in this utility model Figure 3 .

[0036] Figure 11 for Figure 10 Enlarged view of point D in the middle.

[0037] Figure 12 Partial explosion in this utility model Figure 4 .

[0038] Reference numerals: 1-Base; 11-Sliding plate; 111-Drive rod; 1111-Output shaft; 112-First guide rod; 113-Second guide rod; 114-Fixing sleeve; 115-Third guide rod; 12-First fixing plate; 121-Notch; 1211-Universal joint; 12110-Connecting rod; 12111-Sleeve ring; 12112-Connecting seat; 13-Second fixing plate; 14-Third fixing plate; 141-Guide sleeve; 142-Fixing seat; 115-Support platform; 116-Positioning plate; 1161-Positioning cavity; 2-Armrest box; 21-Lower cover; 211-Moving plate; 2111-Ear plate; 212-Elastic element; 213-Front bottom plate; 22-Upper cover; 221-Through hole; 23-Armrest frame; 3-Limiting rod; 31-Limiting block. Detailed Implementation

[0039] Example 1.

[0040] like Figure 1-12 As shown, an adjustable handrail includes a base 1 and a handrail box 2 connected together. The handrail box 2 is mounted on the base 1, and a height adjustment mechanism is provided between the base 1 and the handrail box 2. The height adjustment mechanism includes a sliding plate 11 with a driving component on it. The handrail box 2 has a moving plate 211, and a horizontal adjustment mechanism and a limiting component are provided between the moving plate 211 and the sliding plate 11. The moving plate 211 and the sliding plate 11 are slidably connected. The sliding plate 11 is provided between the base 1 and the handrail box 2. 1 is connected to the armrest box 2. A drive component is provided on the sliding plate 11. The drive component can drive the sliding plate 11 to move, thereby driving the armrest box 2 to move. The armrest box 2 is provided with a moving plate 211. The moving plate 211 moves horizontally relative to the sliding plate 11, thereby completing the horizontal movement of the armrest box 2. A limiting component is connected to the moving plate 211. The limiting component is connected to the sliding plate 11 in an opening and closing connection. When the limiting component is opened and connected to the sliding plate 11, the horizontal adjustment mechanism drives the moving plate 211 to move horizontally on the sliding plate 11.

[0041] like Figure 1-4As shown, the drive assembly includes a drive motor and a drive rod 111. A first guide rod 112 is provided on one side of the drive rod 111. A first fixing plate 12 and a second fixing plate 13 are respectively provided on both sides of the base 1. The first fixing plate 12 is provided with a notch 121, and a universal joint 1211 is fitted onto the notch 121. The universal joint 1211 is slidably connected to the first guide rod 112. The upper end of the drive rod 111 is fixedly connected to the sliding plate 11. The drive motor and the drive rod 111 are fixed to the base 1. On seat 1, the first guide rod 111 is fixedly connected to the sliding plate 11. The universal joint 1211 includes a connecting rod 12110, a sleeve ring 12111, and a connecting seat 12112. The sleeve ring 12111 is sleeved on the first guide rod 112. One end of the connecting rod 12110 is fixedly connected to the sleeve ring 12111, and the other end of the connecting rod 12110 swings on the connecting seat 12112. The swinging structure of the connecting rod 12110 and the connecting seat 12112 is related to the swinging structure of the handle. The structure is the same. A drive rod 111 and a first guide rod 112 are provided on the sliding plate 11. The first guide rod 112 is located on one side of the drive rod 111, and a first fixing plate 12 is provided on one side of the base 1. The first fixing plate 12 is fitted with a universal joint 1211. The universal joint 1211 is slidably connected to the first guide rod 112, so that when the drive motor works and causes the drive rod 111 to move up and down, thereby driving the sliding plate 11 to move, the first guide rod 112 can move along the universal joint 1211. Since the connecting rod 12110 swings on the connecting seat 12112, the universal joint 1211 allows the first guide rod 112 to be adjusted in multiple directions, thereby providing a buffer for the first guide rod 112 when moving. Even under external impact or vibration, the first guide rod 112 can maintain smooth movement. The relative position between the sliding plate 11 and the base 1 can be maintained by the slidable connection between the universal joint 1211 and the first guide rod 112.

[0042] like Figure 3 and Figure 12As shown, a third fixing plate 14 is connected between the first fixing plate 12 and the second fixing plate 13. The third fixing plate 14 is fixedly connected to the base 1. The third fixing plate 14 is provided with a fixing seat 142 and a guide sleeve 141. The fixing seat 142 is connected to the output shaft 1111 of the drive rod 111. A second guide rod 113 is provided on the other side of the drive rod 111. The second guide rod 113 is fixedly connected to the sliding plate 11 and slidably connected to the guide sleeve 141. The fixing seat 142 is provided with a fixing hole (not shown in the figure). The third fixing plate 14 is provided with a mounting hole at the corresponding position of the fixing hole. The fixing seat 142 and the third fixing plate 14 are fixedly connected by screws provided in the fixing hole and the mounting hole. A third fixed plate 14 is fixedly disposed between the second fixed plate 13 and the third fixed plate 14. A guide sleeve 141 and a fixed seat 142 are fixedly disposed on the third fixed plate 14. A second guide rod 113 is disposed on the other side of the drive rod 111 on the sliding plate 11. The second guide rod 113 and the guide sleeve 141 are slidably connected. The output shaft 1111 of the drive rod 111 is connected to the fixed seat 142. When the output shaft 1111 of the drive rod 111 drives the sliding plate 11 to move, the second guide rod 113 can move along the guide sleeve 141 to provide guidance for the movement of the sliding plate 11, so that the movement of the sliding plate 11 will not deviate from the predetermined trajectory. The relative position of the sliding plate 11 and the base 1 can be maintained by the slidable connection between the second guide rod 113 and the guide sleeve 141.

[0043] The output shaft 1111 of the drive rod 111 can extend and retract in the vertical direction. One end of the output shaft 1111 of the drive rod 111 is connected to the fixed base 142. When the output shaft 1111 of the drive rod 111 drives the sliding plate 11 to move, the fixed base 142 bears the weight of the sliding plate 11. The end of the drive rod 111 away from the output shaft 1111 moves, thereby driving the sliding plate 11 to move.

[0044] like Figure 5-8 As shown, the horizontal adjustment mechanism includes a fixed sleeve 114 and a third guide rod 115. The fixed sleeve is fixedly mounted on the upper side of the sliding plate 11, and the third guide rod 115 is mounted on the moving plate 211. The third guide rod 115 is slidably connected to the fixed sleeve 114. The moving plate 211 can move horizontally relative to the sliding plate 11 along the fixed sleeve 114 by sliding the third guide rod 115 within the fixed sleeve 114. The moving plate 211 is connected to the armrest box 2, so the armrest box 2 can move horizontally relative to the sliding plate 11. The horizontal movement of the armrest box 2 relative to the sliding plate 11 can be completed by pushing the armrest box 2.

[0045] like Figure 10 and 11As shown, the limiting assembly includes a limiting rod 3 and a positioning plate 116. The positioning plate 116 is disposed on the sliding plate 11 and is fixedly connected to the upper end of the sliding plate 11. The positioning plate 116 is provided with two or more positioning cavities 1161. The moving plate 211 is provided with an ear plate 2111. The limiting rod 3 is hinged to the ear plate 2111. A limiting block 31 is provided on the side of the positioning plate 116 corresponding to the limiting rod 3. The limiting block 31 is matched with the positioning cavity 1161. The positioning cavities 1161 are spaced apart along the horizontal direction of the positioning plate 116. The limiting block 31 protrudes outward from the limiting rod 3. A positioning plate 116 is provided on one side of the sliding plate 11, and a positioning cavity 1161 is provided on the positioning plate 116. An ear plate 2111 is connected to one side of the moving plate 211, and a limit plate is connected to the ear plate 2111. The limit plate is provided with a limit block 31. When the limit rod 3 is moved so that the limit block 31 moves away from the positioning cavity 1161, the moving plate 211 can move relative to the sliding plate 11. When the limit rod 3 is moved so that the limit block 31 is fitted into the positioning cavity 1161, the moving plate 211 and the sliding plate 11 cannot move relative to each other, thereby completing the limiting between the limit plate and the sliding plate 11.

[0046] like Figure 9-12 As shown, a support platform 115 is provided on the sliding plate 11, which abuts against the moving plate 211. The support platform 115 is provided with a hole for the positioning plate 116 to protrude. The positioning plate 116 protrudes from the support platform 115, so that the positioning plate 116 can be connected to the limiting rod 3 to realize the opening and closing connection between the sliding plate and the moving plate. On the other hand, the moving plate 211 can be moved and abut against the side of the positioning plate 116 to limit the movement position of the moving plate 211. The armrest box 2 is provided with the moving plate 211, and the support platform 115 is provided on the sliding plate 11. The support platform 115 and the moving plate 211 abut against each other to provide support for the armrest box 2.

[0047] like Figure 9 , 10As shown, the armrest box 2 includes an upper cover 22 and a lower cover 21. The lower cover 21 is provided with a front bottom plate 213, and the front bottom plate 213 is provided with an elastic element 212. The front bottom plate 213 is connected to the limiting rod 3 through the elastic element 212. The upper cover 22 has a through hole 221 on one side, through which the limiting rod 3 is installed. The limiting rod 3 is connected to the front bottom plate 213 on one side through the elastic element 212. When the limiting rod 3 is moved, the elastic element 212 extends and deforms. At this time, the limiting block 31 is far away from the positioning cavity 1161, and the moving plate 211 can be relatively displaced with the sliding plate 11. When the limiting rod 3 is not subjected to external force, the elastic element 212 returns to its original state, driving the limiting rod 3 to move, so that the limiting block 31 is sleeved in the positioning cavity 1161, the moving plate 211 and the sliding plate 11 cannot be relatively displaced, and the through hole 221 extends out from one side of the stop rod, so that the limiting rod 3 can be controlled from the outside of the armrest box 2.

[0048] The lower cover 21 has a movable plate 211 on one side panel. The upper cover 22 is fixedly connected to the lower cover 21. The lower cover 21 is provided with a movable plate 211, which can be moved by external force applied to the armrest box 2, making it easy to operate.

[0049] The armrest box 2 is equipped with an armrest frame 23 on the upper side, which can provide hand support for the driver. When the armrest box 2 needs to be moved horizontally, the armrest box 2 is moved horizontally on the support platform by the armrest frame 23.

[0050] The working principle of this utility model is as follows: A first fixing plate 12 and a second fixing plate 13 are respectively provided on both sides of the base 1. A universal joint 1211 is provided on the first fixing plate 12. A sliding plate 11 is provided between the base 1 and the armrest box 2. The sliding plate 11 is connected to the drive rod 111. A first guide rod 112 is provided on one side of the drive rod 111. The first guide rod 112 is slidably connected to the universal joint 1211. A third fixing plate 14 is fixedly provided between the first fixing plate 12 and the second fixing plate 13. A guide sleeve 141 and a fixed seat 142 are fixedly installed on the third fixed plate 14. A second guide rod 113 is provided on the other side of the drive rod 111 on the sliding plate 11. The second guide rod 113 and the guide sleeve 141 are slidably connected. The output shaft 1111 of the drive rod 111 is connected to the fixed seat 142. When the output shaft 1111 of the drive rod 111 drives the sliding plate 11 to move up and down, the second guide rod 113 can move along the guide sleeve 141 to provide guidance for the movement of the sliding plate 11.

[0051] A fixed sleeve is fixedly mounted on the upper side of the sliding plate 11. A third guide rod is mounted on the moving plate 211 and is slidably connected to the fixed sleeve. The moving plate 211 can move horizontally relative to the sliding plate 11 along the fixed sleeve by sliding the third guide rod within the fixed sleeve. The moving plate 211 is connected to the armrest box 2, which in turn can move horizontally relative to the sliding plate 11. Horizontal movement with the sliding plate 11 can be achieved by pushing the armrest box 2. An elastic element 212 connects the limiting rod 3 to the front base plate. When the limit rod 3 is moved, the elastic element 212 deforms and the limit block 31 moves away from the positioning cavity 1161. The moving plate 211 can move relative to the sliding plate 11. When the limit rod 3 is not subjected to external force, the elastic element 212 returns to its original state and moves the limit rod 3, so that the limit block 31 is fitted into the positioning cavity 1161. The moving plate 211 and the sliding plate 11 cannot move relative to each other. The limit rod extends out of the through hole 221 on one side, so that the limit rod 3 can be controlled from the outside of the armrest box 2.

Claims

1. A handrail frame with an adjustable position, comprising a base and a handrail box, wherein the base and the handrail box are connected, characterized in that: A height adjustment mechanism is provided between the base and the armrest box. The height adjustment mechanism includes a sliding plate, the upper end of which is fixedly connected to the armrest box. A driving component is provided on the base, which is fixedly connected to the sliding plate and drives the sliding plate to move up and down. The armrest box is provided with a movable plate. A horizontal adjustment mechanism is provided between the movable plate and the sliding plate. The horizontal adjustment mechanism drives the movable plate and the sliding plate to slide together. A limiting component is provided between the movable plate and the sliding plate, which is connected to the movable plate and is open and closed to the sliding plate. When the limiting component is opened and connected to the sliding plate, the horizontal adjustment mechanism drives the movable plate to move horizontally on the sliding plate.

2. The handrail frame with adjustable position according to claim 1, characterized in that: The drive assembly includes a drive rod, the output end of which is fixedly connected to a sliding plate. A first guide rod is provided on one side of the drive rod and is fixedly connected to the sliding plate. A first fixing plate and a second fixing plate are respectively provided on both sides of the base. The first fixing plate has a notch, and a universal joint is fitted onto the notch. The universal joint is slidably connected to the first guide rod.

3. A handrail frame with an adjustable position according to claim 2, characterized in that: A third fixing plate is connected between the first fixing plate and the second fixing plate. The third fixing plate is provided with a fixing seat and a guide sleeve. The fixing seat is connected to one end of the drive rod. A second guide rod is provided on the other side of the drive rod. The second guide rod is slidably connected to the guide sleeve and fixedly connected to the sliding plate.

4. A handrail frame with an adjustable position according to claim 2, characterized in that: The output shaft of the drive rod extends and retracts along the vertical direction of the sliding plate.

5. A handrail frame with an adjustable position according to claim 1, characterized in that: A support platform is provided on the sliding plate, and the support platform abuts against the moving plate.

6. A handrail frame with an adjustable position according to claim 1, characterized in that: The horizontal adjustment mechanism includes a fixed sleeve and a third guide rod. The fixed sleeve is fixedly mounted on the upper side of the sliding plate, and the third guide rod is mounted on the moving plate. The third guide rod is slidably connected to the fixed sleeve.

7. A handrail frame with an adjustable position according to claim 1, characterized in that: The limiting component includes a limiting rod and a positioning plate. The positioning plate is disposed on a sliding plate and has two or more positioning cavities. The moving plate is provided with an ear plate. The limiting rod is hinged to the ear plate. A limiting block is provided on one side of the positioning plate corresponding to the limiting rod. The limiting block is matched with the positioning cavity.

8. A handrail frame with an adjustable position according to claim 1, characterized in that: The armrest box includes an upper cover and a lower cover. The lower cover is provided with a front bottom plate, and the front bottom plate is provided with an elastic element. The front bottom plate is connected to a limiting rod through the elastic element. The upper cover has a through hole on one side, and the limiting rod is provided through the through hole.

9. A handrail frame with an adjustable position according to claim 8, characterized in that: The lower cover has a movable panel on one side.

10. A handrail frame with an adjustable position according to claim 1, characterized in that: A handrail frame is provided on the upper side of the handrail box.

Images