Handrail structure

Abstract

The utility model provides a handrail structure, through connecting handrail body on support arm, set up telescopic arm and support arm sliding sleeve joint and the cooperation telescopic adjusting mechanism, realize the multi -gear adjustment of handrail body height position, and still through second adjusting mechanism between support arm and handrail body are connected, realize and make multi -gear front -and -back movement adjustment and multi -gear rotation adjustment between both, the handrail structure in the utility model can carry out height position, front -and -back position and angle adjustment, thereby whole adjustment function is strong, good adaptability, adaptation to user different use demand, and the comfort is good.

Description

Technical Field

[0001] This utility model relates to the field of chair accessories technology, and in particular to an armrest structure. Background Technology

[0002] Chairs are seating furniture used for office work, meetings, study, and leisure. Modern furniture chairs are multifunctional and widely used in offices, conference rooms, hotels, and homes. Armchairs can meet the user's need for armrests.

[0003] Chinese patent CN201720381279.1 discloses a chair with retractable armrests, including a chair, a stop block, a movable shaft, an armrest assembly, and a clamping assembly. A chair back is fixedly connected to one side of the upper end of the chair. A stop block is fixedly connected to the side of the chair back. The armrest assembly is movably mounted above the stop block via the movable shaft. The movable shaft is fixedly mounted to the side of the chair back. The armrest assembly has armrests, one end of which is movably mounted on the movable shaft, and the other end has a telescopic rod movably mounted in its central hole. The top of the telescopic rod has an arc-shaped groove. A clamping assembly is located above the armrest assembly. This utility model has a simple structure, good performance, and strong practicality, greatly facilitating people's lives.

[0004] However, in existing technical solutions, the position of chair armrests is usually not adjustable, resulting in limited armrest functionality, poor adaptability, and poor comfort. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a handrail structure. This structure connects the handrail body to a support arm, incorporates a telescopic arm that slides within the support arm, and includes a corresponding telescopic adjustment mechanism. This allows for multi-position adjustment of the handrail body's height. Furthermore, a second adjustment mechanism connects the support arm and the handrail body, enabling multi-position adjustment of their relative position through forward / backward movement and rotation. This handrail structure allows for height, forward / backward position, and angle adjustment, resulting in strong overall functionality, good adaptability, and suitability for diverse user needs, providing excellent comfort.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A handrail structure includes a handrail body and a support arm, wherein the handrail body is mounted on the support arm, and further includes a telescopic arm and a telescopic adjustment mechanism. The telescopic arm is slidably sleeved inside the support arm, and the telescopic adjustment mechanism is connected between the support arm and the telescopic arm, and locks or unlocks the sliding telescopic movement of the telescopic arm.

[0008] Preferably, the support arm is hollow and has an opening at the bottom, the telescopic arm is installed from the bottom opening of the support arm into the hollow space of the support arm, the telescopic adjustment mechanism is installed at the top of the hollow space of the support arm, and the handrail body is installed at the top of the support arm.

[0009] Preferably, the telescopic adjustment mechanism is installed inside the support arm and includes: a first rotating shaft rotatably mounted on the support arm; an adjustment arm connected to the first rotating shaft and extending vertically, with a locking block extending laterally from its extended end; and locking grooves spaced vertically along the side wall of the telescopic arm, the rotation of the first rotating shaft causing the locking block to engage or disengage from the locking groove; and a control arm connected to the first rotating shaft and extending laterally, with a control button connected to its extended end, the control button extending outside the support arm for pressing operation; pressing the control button causes the first rotating shaft to rotate and disengages the locking block from the locking groove.

[0010] Preferably, the top of the control button is spaced apart from the top surface of the support arm so that the control button can be pressed upward, and an elastic element A is provided between the control button and the support arm to drive the control button to automatically reset downward.

[0011] Preferably, the telescopic arm has a receiving groove on its side wall, and the adjusting arm is matched and accommodated in the receiving groove. The receiving groove is connected to the slot on one side. The width of the receiving groove is greater than the width of the adjusting arm to provide swing space for the adjusting arm. Both the slot and the receiving groove are formed by the inward recess of the side wall of the telescopic arm.

[0012] Preferably, the arm also includes a second adjustment mechanism, through which the top of the support arm is connected to the armrest body to adjust the relative position between the two.

[0013] Preferably, the second adjustment mechanism is installed in the hollow space of the handrail body, enabling relative forward and backward movement between the handrail body and the support arm. A slide rail is provided on the bottom plate of the handrail body along the forward and backward direction, and wave-shaped stop grooves A are symmetrically arranged on the left and right sides of the slide rail. The second adjustment mechanism includes a sliding seat that is slidably installed in the slide rail. The left and right sides of the sliding seat are provided with protrusions A that are matched and limited within the stop grooves A to lock the sliding position of the sliding seat. The protrusions A adopt an elastic self-stretching structure or a non-rigid material so that the protrusions A can cross the stop grooves A when the sliding seat slides forward and backward.

[0014] In this embodiment, the top plate of the support arm is fixedly connected to the sliding seat, and a through groove is provided on the bottom plate to allow the top plate to connect with the sliding seat.

[0015] Preferably, the bump A is made of rubber.

[0016] Preferably, the second adjustment mechanism also allows for relative rotational adjustment between the armrest body and the support arm. The second adjustment mechanism further includes a rotating seat, which is rotatably mounted on the sliding seat. The rotating seat is connected to the top plate of the support arm for synchronous rotation. The sliding seat has wave-shaped shift grooves B distributed along the circumferential direction. The rotating seat has two symmetrically arranged protrusions B that are matched and limited within the shift grooves B to lock the rotational position of the rotating seat. The protrusions B adopt an elastic self-stretching structure or a non-rigid material so that the protrusions B can cross the shift grooves B when the rotating seat rotates.

[0017] Preferably, the rotating seat is recessed with a mounting groove, the protrusion B is disposed in the mounting groove, and an elastic element B is provided between the bottom surface of the mounting groove and the protrusion B.

[0018] Preferably, both elastic element A and elastic element B are springs.

[0019] The beneficial effects of this utility model are as follows:

[0020] (1) This utility model achieves the telescopic adjustment of the height position of the handrail body by connecting the handrail body to the support arm, setting the telescopic arm to slide and sleeve the support arm, and setting the telescopic adjustment mechanism in cooperation to achieve multi-level telescopic adjustment and effective locking of the height position of the handrail body. The height position of the handrail body is stably locked and kept in the required position. The structure is stable and the operation is convenient.

[0021] (2) The present invention connects the support arm and the handrail body through a second adjustment mechanism. The second adjustment mechanism includes a sliding seat that is slidably mounted on the handrail body and a rotating seat that is rotatably mounted on the sliding seat and connected to the support arm. This enables the handrail body to move and adjust its position relative to the support arm, as well as to adjust its angle position.

[0022] (3) In this utility model, the sliding seat and the slide rail and the rotating seat and the sliding seat are automatically engaged in multiple positions, so that the process of sliding and rotating the armrest body has a sense of position, the adjustment process is faster and more convenient, and the position can be automatically locked, making the operation convenient and the structure more stable. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 This is a schematic diagram of the telescopic adjustment mechanism in this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the second adjustment mechanism in this utility model;

[0028] Figure 6 for Figure 5 Top view;

[0029] Figure 7 This is a partial front view of the second adjustment mechanism in this utility model. Detailed Implementation

[0030] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Example 1

[0034] like Figure 1-2As shown, a handrail structure includes a handrail body 1 and a support arm 2. The handrail body 1 is mounted on the support arm 2. The handrail also includes a telescopic arm 3 and a telescopic adjustment mechanism 4. The telescopic arm 3 is slidably sleeved inside the support arm 2. The telescopic adjustment mechanism 4 is connected between the support arm 2 and the telescopic arm 3 and locks or unlocks the sliding telescopic movement of the telescopic arm 3.

[0035] As a preferred option, such as Figure 2 As shown, the support arm 2 is hollow and has an opening at the bottom. The telescopic arm 3 is installed from the bottom opening of the support arm 2 into the hollow space of the support arm 2. The telescopic adjustment mechanism 4 is installed at the top of the hollow space of the support arm 2. The handrail body 1 is installed at the top of the support arm 2.

[0036] As a preferred option, such as Figure 3-4 As shown, the telescopic adjustment mechanism 4 is installed inside the support arm 2, and includes: a first rotating shaft 41, which is rotatably mounted on the support arm 2; an adjustment arm 42, which is connected to the first rotating shaft 41 and extends vertically, with a locking block 421 extending laterally from its extended end; and locking grooves 301 are provided vertically at intervals on the side wall of the telescopic arm 3, with the rotation of the first rotating shaft 41 causing the locking block 421 to engage or disengage from the locking groove 301; and a control arm 43, which is connected to the first rotating shaft 41 and extends laterally, with a control button 431 connected to its extended end, which extends outside the support arm 2 for pressing operation. Pressing the control button 431 causes the first rotating shaft 41 to rotate and disengages the locking block 421 from the locking groove 301.

[0037] Preferably, the top of the control button 431 is spaced apart from the top surface of the support arm 2 so that the control button 431 can be pressed upward, and an elastic element A44 is provided between the control button 431 and the support arm 2 to drive the control button 431 to automatically reset downward.

[0038] In this embodiment, the control button 431 is exposed. When the control button 431 is pressed, the first rotating shaft 41 rotates and causes the locking block 421 to disengage from the slot 301. At this time, the telescopic arm 3 can be freely slid and extended to adjust the height of the handrail body 1. When the height is adjusted to a suitable height, the control button 431 is released. Under the action of the elastic element A44, the control button 431 automatically resets and causes the locking block 421 to engage in the corresponding slot 301, thereby locking the height position.

[0039] Preferably, the telescopic arm 3 has a receiving groove 302 on its side wall, and the adjusting arm 42 is matched and accommodated in the receiving groove 302. The receiving groove 302 has a slot 301 connected to one side of it. The width of the receiving groove 302 is greater than the width of the adjusting arm 42 to provide swing space for the adjusting arm 42. Both the slot 301 and the receiving groove 302 are formed by the inward recess of the side wall of the telescopic arm 3. The structure is compact, makes full use of space, and has good structural stability.

[0040] Example 2

[0041] The components in this embodiment that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals as those in the above embodiments. For the sake of simplicity, only the differences between this embodiment and the above embodiments are described below. The difference between this embodiment and the above embodiments is that:

[0042] As a preferred option, such as Figure 5 As shown, it also includes a second adjustment mechanism 5, which is installed in the hollow space of the handrail body 1. The top of the support arm 2 is connected to the handrail body 1 through the second adjustment mechanism 5 so that the relative position between the two can be adjusted.

[0043] As a preferred option, combined with Figure 6 As shown, the second adjustment mechanism 5 enables relative forward and backward movement adjustment between the handrail body 1 and the support arm 2: a slide rail 12 is provided on the bottom plate 11 of the handrail body 1 along the forward and backward direction, and wave-shaped stop grooves A13 are symmetrically arranged on the left and right sides of the slide rail 12. The second adjustment mechanism 5 includes a sliding seat 51 that is slidably installed in the slide rail 12. The top plate 22 of the support arm 2 is fixedly connected to the sliding seat 51. The left and right sides of the sliding seat 51 are provided with protrusions A52 that are matched and limited in the stop grooves A13 to lock the sliding position of the sliding seat 51. The protrusions A52 adopt an elastic self-stretching structure or a non-rigid material so that the protrusions A52 can cross the stop grooves A13 when the sliding seat 51 slides forward and backward.

[0044] In this embodiment, when force is applied to the armrest body 1 in the front-back direction, the sliding seat 51 slides along the slide rail 12 and the protrusion A52 passes over the previous gear slot A13 and locks into the next gear slot A13, realizing the movement adjustment of the armrest body 1 in the front and back. Moreover, through the elastic automatic engagement between the protrusion A52 and the wave-shaped gear slot A13, the position is automatically locked while the adjustment process has a gear feel, making the adjustment process faster and more convenient.

[0045] In this embodiment, a through groove is provided on the base plate 11 so that the top plate 22 can be connected to the sliding seat 51.

[0046] Preferably, the bump A52 is made of rubber.

[0047] Example 3

[0048] The components in this embodiment that are the same as or corresponding to those in Embodiment 2 above are referred to by the same reference numerals as those in Embodiment 2 above. For the sake of simplicity, only the differences from Embodiment 2 above will be described below. The difference between this embodiment and Embodiment 2 above is that:

[0049] As a preferred option, such as Figure 5-6 As shown, the second adjustment mechanism 5 also enables relative rotational adjustment between the armrest body 1 and the support arm 2. The second adjustment mechanism 5 also includes a rotating seat 53, which is rotatably mounted on the sliding seat 51. The rotating seat 53 is connected to the top plate 22 of the support arm 2 for synchronous rotation. The sliding seat 51 is provided with wave-shaped shift grooves B54 distributed along the circumferential direction. The rotating seat 53 is symmetrically provided with two protrusions B55 that are matched and limited within the shift grooves B54 to lock the rotation position of the rotating seat 53. The protrusions B55 adopt an elastic self-stretching structure or a non-rigid material so that the protrusions B55 can cross the shift grooves B54 when the rotating seat 53 rotates.

[0050] In this embodiment, when a torsional force is applied to the armrest body 1, the protrusion B55 of the rotating seat 53 switches on the wave-shaped gear slot B54, that is, the protrusion B55 passes over the previous gear slot B54 and is engaged in the next gear slot B54, thereby realizing the angle rotation adjustment and automatic locking of the angle position of the armrest body 1. Moreover, through the elastic automatic engagement between the protrusion B55 and the gear slot B54, the position state is automatically locked while making the adjustment process have a gear feel, making the adjustment process faster and more convenient.

[0051] As a preferred option, such as Figure 7 As shown, the rotating seat 53 is recessed with a mounting groove 531, the protrusion B55 is disposed in the mounting groove 531, and an elastic element B56 is provided between the bottom surface of the mounting groove 531 and the protrusion B55.

[0052] Preferably, both the elastic element A44 and the elastic element B56 are springs.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A handrail structure, characterized in that, The armrest includes a handrail body (1) and a support arm (2), the handrail body (1) being mounted on the support arm (2), and also includes a telescopic arm (3) and a telescopic adjustment mechanism (4). The telescopic arm (3) is slidably fitted inside the support arm (2), and the telescopic adjustment mechanism (4) is connected between the support arm (2) and the telescopic arm (3), which locks or unlocks the sliding telescopic movement of the telescopic arm (3). It also includes a second adjustment mechanism (5), the top of the support arm (2) is connected to the handrail body (1) through the second adjustment mechanism (5) so that the relative position between the two can be adjusted; the second adjustment mechanism (5) is installed in the hollow space of the handrail body (1) so that the handrail body (1) and the support arm (2) can be adjusted to move back and forth relative to each other; The bottom plate (11) of the handrail body (1) is provided with a slide rail (12) along the front-back direction. The left and right sides of the slide rail (12) are symmetrically provided with wave-shaped gear grooves A (13). The second adjustment mechanism (5) includes a sliding seat (51) that is slidably installed in the slide rail (12). The left and right sides of the sliding seat (51) are provided with protrusions A (52) that are matched and limited in the gear grooves A (13) to lock the sliding position of the sliding seat (51). The protrusions A (52) adopt an elastic self-stretching structure or a non-rigid material so that the protrusions A (52) can cross the gear grooves A (13) when the sliding seat (51) slides back and forth.

2. The handrail structure according to claim 1, characterized in that, The support arm (2) is hollow and has an opening at the bottom. The telescopic arm (3) is installed from the bottom opening of the support arm (2) into the hollow space of the support arm (2). The telescopic adjustment mechanism (4) is installed at the top of the hollow space of the support arm (2). The handrail body (1) is installed at the top of the support arm (2).

3. The handrail structure according to claim 1, characterized in that, The telescopic adjustment mechanism (4) includes: The first rotating shaft (41) is rotatably mounted on the support arm (2); An adjusting arm (42) is connected to and extends vertically from the first rotating shaft (41). A locking block (421) extends laterally from the end of the adjusting arm (3). A slot (301) is vertically spaced along the side wall of the telescopic arm (3). The rotation of the first rotating shaft (41) causes the locking block (421) to engage or disengage from the slot (301). The control arm (43) is connected to the first rotating shaft (41) and extends laterally. The extended end is connected to a control button (431). The control button (431) extends out of the support arm (2) for pressing operation. Pressing the control button (431) will drive the first rotating shaft (41) to rotate and cause the card block (421) to disengage from the card slot (301).

4. The handrail structure according to claim 3, characterized in that, The top of the control button (431) is spaced apart from the top surface of the support arm (2) so that the control button (431) can be pressed upward, and an elastic element A (44) is provided between the control button (431) and the support arm (2) to drive the control button (431) to automatically reset downward.

5. A handrail structure according to claim 3, characterized in that, The telescopic arm (3) has a receiving groove (302) on its side wall. The adjusting arm (42) is matched and accommodated in the receiving groove (302). The receiving groove (301) is arranged in connection with one side of the receiving groove (302). The width of the receiving groove (302) is greater than the width of the adjusting arm (42) to provide swing space for the adjusting arm (42). The receiving groove (301) and the receiving groove (302) are both formed by the inward recess of the side wall of the telescopic arm (3).

6. A handrail structure according to any one of claims 1-5, characterized in that, The bump A (52) is made of rubber.

7. A handrail structure according to any one of claims 1-5, characterized in that, The second adjustment mechanism (5) also enables relative rotation adjustment between the armrest body (1) and the support arm (2). The second adjustment mechanism (5) also includes a rotating seat (53), which is rotatably placed on the sliding seat (51). The rotating seat (53) is connected to the top plate (22) of the support arm (2) to rotate synchronously. The sliding seat (51) is provided with wave-shaped gear slots B (54) distributed along the circumferential direction. The rotating seat (53) is symmetrically provided with two matching protrusions B (55) that are located in the gear slots B (54) to lock the rotation position of the rotating seat (53). The protrusions B (55) adopt an elastic self-stretching structure or a non-rigid material so that the protrusions B (55) can cross the gear slots B (54) when the rotating seat (53) rotates.

8. A handrail structure according to claim 7, characterized in that, The rotating seat (53) is recessed with an installation groove (531), the protrusion B (55) is disposed in the installation groove (531), and an elastic element B (56) is provided between the bottom surface of the installation groove (531) and the protrusion B (55).

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