Armrest that allows for adjustable raising and lowering

Abstract

Armrest that allows for adjustable raising and lowering, including: a main tube (1), wherein one end of which is suitable for mounting on a chair and the other end extends upwards and is provided on one side with several positioning holes (11) and the side of the main tube (1) opposite the several positioning holes (11) is provided with a slot (12) and furthermore a receiving channel (13) is provided inside the upwardly extending end of the main tube (1), wherein the several positioning holes (11) and the slot (12) are continuously connected to the receiving channel (13) and the top of the receiving channel (13) is open; an outer seat tube (2) which is slidably arranged outside the upwardly extending end of the main tube (1) and has an outer tube section (21) and a leaning section (22), wherein the outer tube section (21) is slidably arranged around and surrounds the upwardly extending end of the main tube (1), and the leaning section (22) is connected to the outer tube section (21) and is not arranged parallel to the main tube (1), wherein the outer tube section (21) drives the leaning section (22) to raise and lower, wherein furthermore an opening (23) is provided at the point where the outer tube section (21) is connected to the leaning section (22), wherein the outer tube section (21) and the leaning section (22) of the outer seat tube (2) are removable structures, wherein the outer tube section (21) is a hollow tube body.wherein corresponding to the pivot connection section (31) of a control element (3), the outer tube section (21) has two projecting frame plates (211), wherein the two frame plates (211) are spaced apart and the upper ends of the two frame plates (211) are each recessed and formed as an arc notch (212), wherein the position of the opening (23) corresponds to the two frame plates (211); the control element (3), wherein one end of it is housed in the receiving channel (13) of the main tube (1) and the other end protrudes from the receiving channel (13), wherein the control element (3) comprises the pivot connection section (31), a pressure control section (32), a control section (33) and a limiting section (34) and is furthermore pivotably arranged on the inner wall of the outer tube section (21) by means of the pivot connection section (31), and the pressure control section (32) is opposite the pivot connection section (31) and protrudes from the opening (23), and the control section (33) is normally inserted into one of the several positioning holes (11), and the limiting section (34) is located opposite the control section (33) and is normally detached from the slot (12).wherein, in contrast, the pressure control section (32) is engaged from the outside inwards into the outer seat tube (2) and drives the control section (33) so that it is released from a positioning hole (11) for insertion, wherein the limiting section (34) engages with the slot (12) for limiting, wherein furthermore a recess (37) is provided between the pivot connection section (31) and the pressure control section (32) on the top of the control element (3) and a positioning rod (371) projects vertically from the bottom of the recess (37); and , a spring (4) surrounding the positioning rod (371), wherein the two ends of the spring (4) each bear elastically against the bottom surface of the recess (37) and against the leaning section (22), wherein the pressure control section (32) of the control element (3) is pressed towards the interior of the outer seat tube (2) and snapped into it and is simultaneously pressed against the spring (4) so ​​that the spring stores energy, wherein when the energy exerted on the pressure control section (32) and used for snapping is released, the energy-storing end of the spring (4) bears elastically against the pressure control section (32) so that the pressure control section (32) is reset towards the opening (23).

Description

[0001] The armrest according to the invention, which allows for adjustable raising and lowering, relates in particular to a technology used in the field of chairs. The objective of the present invention is to enable the user to rest their hands comfortably on the armrest. The key technical aspect is that the present invention, through its simple design, can be quickly and easily adjusted to a comfortable hand position.

[0002] For most people who sit for extended periods doing homework, working in an office, etc., comfort during prolonged sitting and the ability to rest their hands are paramount. Therefore, some chairs are equipped with armrests on both sides to provide support and a place to rest the hands. However, users have varying needs regarding how their hands are positioned on the armrests due to differences in arm length. Consequently, most of the related industry incorporates adjustable armrest designs. The height and angle of the armrest can be adjusted to accommodate different arm lengths, allowing users to rest their hands in the most comfortable way.However, chairs with adjustable armrests on the market today are too complicated in their construction, which is why maintenance costs are often high.

[0003] CN 2 04 519 954 U discloses an armrest comprising a fixed support base, a movable backrest section, and an adjustment control element. The fixed support base comprises a mounting section and a support section, which are integrally joined. A receiving space is formed at the upper end of the support section. The upper end of the support section is provided with a limiting plate to hold the adjustment control element within the receiving space. The movable backrest section comprises a base body and a cover. A sleeve extends downward from the bottom of the base body, enclosing part of the support section. A knob element is mounted on the control section. The knob element projects through an opening in the sleeve. The lower end of the adjustment control element has a latch that engages with one of several holes.The adjustment control is normally pivoted outwards, so that a spring holds a latch in the corresponding hole. To adjust the height, pressing the control section of the adjustment control first compresses the spring, causing the lower end of the adjustment control to pivot inwards around its axis and release the latch from the corresponding hole. Once the movable backrest has been moved up or down into the correct position, the actuating section is released. The spring is reset, and the latch engages in a different hole.

[0004] CN 2 09 018 154 U discloses a structure comprising a bracket, an outer cover, a pull hook, a handle, a base plate, front and rear sliding elements, a pivot element, and a plate. The upper end of the bracket has a receiving chamber. The receiving chamber is provided with a plurality of vertically arranged first locking positions. The bracket includes a mounting plate, a sleeve, and a vertically arranged iron tube. The outer cover encases the outside of the bracket. The upper end of the outer cover is connected to a connecting element. The pull hook is pivotally connected to the top of the outer cover and extends into the receiving chamber. The handle can be pressed against the outer cover, is connected to the upper end of the pull hook, and drives the pull hook to pivot. The handle is provided with a switching spring that causes the handle to reset.

[0005] The object of the present invention is to enable the armrest to be raised and lowered with a simpler design, without increasing maintenance costs.

[0006] This task is solved by an armrest in accordance with the independent claim.

[0007] Preferred embodiments of the invention are the subject of the dependent claims. Fig. Figure 1 shows a schematic view according to the present invention; Fig. Figure 2 shows a perspective exploded view according to the present invention; Fig. Figure 3 shows a schematic partial view according to Fig. 2; Fig. 4 shows a further schematic perspective view of the main tube according to the present invention; Fig. Figure 5 shows an enlarged schematic view of the base of the outer seat tube according to the present invention; Fig. Figure 6 shows a schematic sectional view along section line VI-VI according to Fig. 1; Fig. Figure 7 shows a schematic view of the release mechanism according to Fig. 6; Fig. Figure 8 shows a schematic view of the pull-up actuation according to Fig. 7; Fig. Figure 9 shows a schematic view of the release mechanism according to Fig. 8; Fig. Figure 10 shows a schematic view according to the present invention, in which the lifting operation is carried out to the uppermost position; Fig. 11 and Fig. Figures 12 show schematic views of the continuous actuations according to the present invention, in which the respective leaning section is brought into engagement with the corresponding detent element; Fig. Figure 13 shows a schematic sectional view along section line XIII-XIII according to Fig. 1.

[0008] It will be directed to the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12 to Fig. 13 Reference is made to the following. The armrest according to the invention, which enables adjustable raising and lowering, comprises the following: a main tube 1, wherein one end of this is mounted on a chair (not shown) and the other end extends upwards and is provided on one side with several positioning holes 11 and the side of the main tube 1 opposite the several positioning holes 11 is provided with a slot 12 and furthermore the upwardly extending end of the main tube 1 is hollowed out and a receiving channel 13 is provided inside it, wherein the several positioning holes 11 and the slot 12 are continuously connected to the receiving channel 13 and the top of the receiving channel 13 is open;an outer seat tube 2, which has a T-shape and is slidably arranged outside the upwardly extending end of the main tube 1 and has an outer tube section 21 and a leaning section 22, wherein the outer tube section 21 is slidable relative to and surrounds the upwardly extending end of the main tube 1 and the leaning section 22 is connected to one end of the outer tube section 21 and is not arranged parallel to the main tube 1, wherein the leaning section 22 serves to allow the user to rest his arm on it, wherein the outer tube section 21 is slidable relative to the main tube 1 and drives the leaning section 22 to raise and lower, wherein furthermore an opening 23 is provided at the point where the outer tube section 21 is connected to the leaning section 22;

[0009] a control element 3, wherein one end of this is housed in the receiving channel 13 of the main tube 1 and the other end protrudes from the receiving channel 13 and is housed in the outer seat tube 2, wherein the control element 3 has a pivot connection section 31, a pressure control section 32, a control section 33 and a limiting section 34 and is furthermore pivotably arranged on the inner wall of the outer tube section 21 by means of a pivot connection section 31 and the pressure control section 32 is opposite the pivot connection section 31 and protrudes from the opening 23 and the control section 33 is normally inserted into one of the several positioning holes 11 and the limiting section 34 is located opposite the control section 33 and is normally detached from the slot 12,wherein, in contrast, the pressure control section 32 is engaged from the outside inwards into the outer seat tube 2 and drives the control section 33 so that it is released from a positioning hole 11 for insertion, wherein the limiting section 34 engages with the slot 12 for limiting, wherein, furthermore, most importantly with respect to the control element 3, a recess 37 is provided between the pivot connection section 31 and the pressure control section 32 on the top of the control element and a positioning rod 371 projects vertically from the bottom of the recess 37; and a spring 4 surrounds the positioning rod 371, wherein the two ends of the spring 4 bear elastically against the bottom surface of the recess 37 and against the leaning section 22, respectively.wherein the pressure control section 32 of the control element 3 is pressed towards the interior of the outer seat tube 2 and engages in it, and simultaneously pressed against the spring 4 so that the spring stores energy, wherein when the energy exerted on the pressure control section 32 and used for engagement is released, the spring 4 stores energy and elastically rests against the pressure control section 32 so that the pressure control section is reset towards the opening 23.

[0010] The present invention can be discussed in two parts: the adjustment state and the positioning state. In the adjustment state, the control section 33 is usually inserted into the corresponding positioning hole 11 under normal circumstances. If the height position of the outer seat tube 2 is to be adjusted, the pressure control section 32 must be pressed by hand (as indicated by the hollow arrow in the figure). Fig. (shown in Figure 7). Furthermore, the pivot connection section 31 and the outer seat tube 2 are pivotably combined so that, upon engagement, the pivot connection section 31 is used as an axis and the pressure control section 32 is pivoted 15° to 25° towards the interior of the leaning section 22. Simultaneously, the pivoting action presses the pressure control section 32 against the spring 4, thus elastically deforming the spring to store energy. At the same time, the pivoting action of the pressure control section 32 releases the control section 33 from the corresponding positioning hole 11, and the limiting section 34 is inserted into the slot 12 (as indicated by the solid arrow in Figure 7). Fig. 7 shown). After the control section 33 has been released from the corresponding positioning hole 11, the height position of the outer seat tube 2 relative to the main tube 1 can be adjusted up and down (as indicated by the hollow arrow in Fig. 8 shown). At this point, the pressure control section 32 is held in the locked position by force and the control element 3 moves together with the outer seat tube 2 (cf. Fig. 7 and Fig. 8) After the user has positioned the outer seat tube 2 by adjusting it, the locking mechanism of the control section 33 is released in the positioning state (as indicated by the hollow arrow in Fig. (9 shown). The spring 4 was previously loaded and thus elastically deformed to store energy, so that when the detent force is released, the pressure control section 32 is pressed by the spring 4 and moved back towards the opening 23. Simultaneously, the return of the pressure control section 32 causes the control section 33 to be inserted into the corresponding positioning hole 11 (as indicated by the solid arrow in Figure 9). Fig. 9 shown) and also causes the limiting section 34 to move away from the slot 12, thus completing the positioning after adjustment.

[0011] As can be seen from the description above, the outer tube section 21 and the leaning section 22 of the outer seat tube 2 are removable structures (see Fig. 2) The outer tube section 21 is a hollow tube body. Corresponding to the pivot connection section 31 of the control element 3, the outer tube section 21 has two projecting frame plates 211, the two frame plates 211 being spaced apart, and the upper ends of the two frame plates 211 being recessed and formed as arc-shaped notches 212, the position of the opening 23 corresponding to the two frame plates 211, and the pivot connection section 31 being cylindrical and arranged at the arc-shaped notches 212 of the two frame plates 211. The main purpose of the arrangement of the two frame plates 211 is to enable a combination with the pivot connection section 31 of the control element 3, so that the pivot connection section 31 acts as an axis and the control element 3 can be pivoted about the pivot connection section.Furthermore, the outer tube section 21 of the outer seat tube 2 is further subdivided into an outer ring plate 213 and a base 214, wherein the outer ring plate 213 is arranged annularly around the main tube 1 and the base 214 is formed integrally with the outer ring plate 213 and is arranged at one end of the outer ring plate 213, wherein at least one locking element 215 is arranged projecting on the outer circumference of the base 214 and a mounting recess 221 is formed as a depression on the underside of the leaning section 22, wherein, corresponding to the respective locking element 215 on the outer circumference of the base 214, the wall of the respective mounting recess 221 is provided with a locking section 222, wherein, when the leaning section 22 is attached to the outer tube section 21, the base 214 is inserted into the mounting recess 221 and the respective locking element 215 is engaged in the corresponding locking section 222 (cf. . Fig. 11, Fig. 12 to Fig. 13) The method for mounting the leaning section 22 with the base 214 consists mainly in that a locking element 215 located on any side of the base 214 is extended horizontally outwards, and the respective locking element 215 is furthermore a fan-shaped column body and has an upper inclined surface 2151, wherein the leaning section 22 is engaged with the corresponding horizontally extended locking element 215 and then pivoted, and is slidably engaged with the outer circumference of the base 214 and pivoted by the upper inclined surfaces 2151 of the remaining locking elements 215. This arrangement of the upper inclined surfaces 2151 allows the leaning section 22 to be easily pressed downwards so that the remaining locking elements 215 can be engaged with the corresponding locking sections 222.In this way, the user can easily and quickly attach the leaning section 22 to the base.

[0012] Furthermore, the control element 3 is T-shaped and has a horizontal connecting segment 35 and an upright segment 36, the upright segment 36 being vertically connected to the horizontal connecting segment 35 and slidably arranged on the upwardly extending end of the main tube 1. The pivot connecting section 31 and the pressure control section 32 represent the two ends of the horizontal connecting segment 35. A rib block 372 is also arranged projecting between the side of the upright segment 36 provided with the limiting section 34 and the horizontal connecting segment 35. The rib block 372 extends obliquely from the end located near the limiting section 34 towards the horizontal connecting segment 35 and gradually widens outwards. The rib block 372 stiffens the connection between the horizontal connecting segment 35 and the upright segment 36.The control section 33 and the limiting section 34 are located at the end of the upright segment 36 and each correspond to the multiple positioning holes 11 and the slot 12. The pivoting connecting section 31 acts as a pivot axis for the control element 3. When the pressure control section 32 engages inside the leaning section 22, the horizontal connecting segment 35 pivots and is pressed against the spring, causing the spring to deform and store energy. When the horizontal connecting segment 35 pivots, the upright segment 36 is simultaneously driven to pivot, so that the control section 33 located on the upright segment 36 disengages from the corresponding positioning hole 11, and during the raising and lowering adjustment of the outer seat tube 2, the limiting section 34 slides within the slot 12 (see the figure). Fig. 7, Fig. 8 to Fig. 9 and, to supplement this, simultaneously the Fig. 2 and Fig. 3).

[0013] To offer the manufacturer greater ease of assembly, the slot 12 is further subdivided into a sliding segment 121 and a transition segment 122. The sliding segment 121 and the transition segment 122 are continuously connected. The transition segment 122 is located closer to the end face of the main tube 1, but still maintains a certain distance from it. The width diameter of the transition segment 122 is larger than the width diameter of the sliding segment 121, giving the slot 12 a T-shape. Furthermore, two guide arcs 123 are formed at the junction of the sliding segment 121 and the transition segment 122, with the two guide arcs 123 corresponding to each other. Therefore, if the manufacturer wants to insert the upright segment 36 of the control element 3 into the main tube 1, the limiting section 34 located at one end of the upright segment 36 slides into the transition segment 122 in advance.Since the width diameter of the transition segment 122 is larger, the limiting section 34 can be accommodated without requiring alignment within the transition segment 122. By using the arcs of the two guide arc angles 123, the limiting section 34 can be inserted into the sliding segment 121. In this way, the assembly of the control element 3 with the main tube 1 can be facilitated (see . Fig. 3).

[0014] Finally, it is worth mentioning that, in order to make it easier for the user to identify the position of the pressure control section 32 of the control element 3 and to facilitate learning and operation, the base surface of the pressure control section 32 is further formed as an arc-shaped recess by means of a directional control arc recess 321. The directional control arc recess 321 controls and drives the pressure control section 32 so that it protrudes from the opening 23 of the outer seat tube 2 and pivots within it. The user only needs to touch the underside of the base 214 with their hand. Once they have touched the directional control arc recess 321, they can push upwards in the direction of the arc, which allows for convenient and simple operation (cf. Fig. 2 and Fig. 4). Reference symbol list 1 main pipe 11 Positioning hole 12 slots 121 Sliding segment 122 Transition segment 123 Guide arc angle 13 Recording channel 2 outer seat tube 21 Outer pipe section 211 Frame plate 212 Bow notch 213 Outer ring plate 214 Base 215 Latching element 2151 upper inclined surface 22 Loan section 221 Mounting recess 222 Rest area 23 Opening 3 Control element 31 Swivel connection section 32 Pressure control section 321 Directional control arc exit 33 Control section 34 Boundary section 35 horizontal connecting segment 36 upright segment 37 Exclusion 371 Positioning rod 372 Rib block 4 springs

Claims

[1] Armrest that allows adjustable raising and lowering, comprising: a main tube (1), wherein one end of which is suitable for mounting on a chair and the other end extends upwards and is provided on one side with several positioning holes (11) and the side of the main tube (1) opposite the several positioning holes (11) is provided with a slot (12) and furthermore a receiving channel (13) is provided inside the upwardly extending end of the main tube (1), wherein the several positioning holes (11) and the slot (12) are continuously connected to the receiving channel (13) and the top of the receiving channel (13) is open; an outer seat tube (2) which is slidably arranged outside the upwardly extending end of the main tube (1) and has an outer tube section (21) and a leaning section (22), wherein the outer tube section (21) is slidably arranged around and surrounds the upwardly extending end of the main tube (1), and the leaning section (22) is connected to the outer tube section (21) and is not arranged parallel to the main tube (1), wherein the outer tube section (21) drives the leaning section (22) to raise and lower, wherein furthermore an opening (23) is provided at the point where the outer tube section (21) is connected to the leaning section (22), wherein the outer tube section (21) and the leaning section (22) of the outer seat tube (2) are removable structures, wherein the outer tube section (21) is a hollow tube body.wherein corresponding to the pivot connection section (31) of a control element (3) the outer tube section (21) has two projecting frame plates (211), wherein the two frame plates (211) are spaced apart and the upper ends of the two frame plates (211) are each recessed and formed as an arc notch (212), wherein the position of the opening (23) corresponds to the two frame plates (211); the control element (3), wherein one end of it is housed in the receiving channel (13) of the main tube (1) and the other end protrudes from the receiving channel (13), wherein the control element (3) comprises the pivot connection section (31), a pressure control section (32), a control section (33) and a limiting section (34) and is furthermore pivotably arranged on the inner wall of the outer tube section (21) by means of the pivot connection section (31), and the pressure control section (32) is opposite the pivot connection section (31) and protrudes from the opening (23), and the control section (33) is normally inserted into one of the several positioning holes (11), and the limiting section (34) is located opposite the control section (33) and is normally detached from the slot (12).wherein, in contrast, the pressure control section (32) is engaged from the outside inwards into the outer seat tube (2) and drives the control section (33) so that it is released from a positioning hole (11) for insertion, wherein the limiting section (34) engages with the slot (12) for limiting, wherein furthermore a recess (37) is provided between the pivot connection section (31) and the pressure control section (32) on the top of the control element (3) and a positioning rod (371) projects vertically from the bottom of the recess (37); and, a spring (4) surrounding the positioning rod (371), wherein the two ends of the spring (4) each bear elastically against the bottom surface of the recess (37) and against the leaning section (22), wherein the pressure control section (32) of the control element (3) is pressed towards the interior of the outer seat tube (2) and snapped into it and is simultaneously pressed against the spring (4) so ​​that the spring stores energy, wherein when the energy exerted on the pressure control section (32) and used for snapping is released, the energy-storing end of the spring (4) bears elastically against the pressure control section (32) so that the pressure control section (32) is reset towards the opening (23). [2] Armrest according to claim 1, wherein the control element (3) is T-shaped and has a horizontal connecting segment (35) and an upright segment (36), wherein the upright segment (36) is vertically connected to the horizontal connecting segment (35) and is slidably arranged on the upwardly extending end of the main tube (1), wherein the pivot connecting section (31) and the pressure control section (32) represent the two ends of the horizontal connecting segment (35), wherein the control section (33) and the limiting section (34) are located at the end of the upright segment (36) and each correspond to the multiple positioning holes (11) and the slot (12), wherein the pivot connecting section (31) acts as a pivot axis for the control element (3), wherein when the pressure control section (32) is engaged in the interior of the leaning section (22) of the outer seat tube (2),the horizontal connecting segment (35) is pivoted and pressed against the spring (4) so ​​that the spring is deformed to store energy, wherein, when the horizontal connecting segment (35) is pivoted, the upright segment (36) is simultaneously driven to pivot, so that the control section (33) located on the upright segment (36) disengages from the corresponding positioning hole (11) and, during the raising and lowering adjustment of the outer seat tube (2), the limiting section (34) slides within the slot (12). [3] Armrest according to claim 2, wherein the slot (12) is further subdivided into a sliding segment (121) and a transition segment (122), wherein the sliding segment (121) and the transition segment (122) are continuously connected to each other and the transition segment (122) is located closer to the end face of the main tube (1), wherein the width diameter of the transition segment (122) is larger than the width diameter of the sliding segment (121), wherein furthermore two guide arc angles (123) are formed at the connection point of the sliding segment (121) with the transition segment (122), wherein the two guide arc angles (123) correspond to each other, wherein, when the upright segment (36) of the control element (3) is inserted into the main tube (1), the limiting section (34) located at one end of the upright segment (36) slides into the transition segment (122) in advance.so that, by using the arcs of the two guide arc angles (123), the limiting section (34) can be introduced into the sliding segment (121). [4] Armrest according to claim 3, in which a rib block (372) is further arranged projecting between the side of the upright segment (36) provided with the limiting section (34) and the horizontal connecting segment (35), wherein the rib block (372) extends obliquely from the end located near the limiting section (34) towards the horizontal connecting segment (35) and gradually widens outwards, wherein the rib block (372) stiffens the connection between the horizontal connecting segment (35) and the upright segment (36). [5] Armrest according to one of the preceding claims, wherein the outer tube section (21) of the outer seat tube (2) is further subdivided into an outer ring plate (213) and a base (214), wherein the outer ring plate (213) is arranged annularly around the main tube (1) and the base (214) is formed integrally with the outer ring plate (213) and is arranged at one end of the outer ring plate (213), wherein furthermore at least one locking element (215) is arranged projecting on the outer circumference of the base (214) and a mounting recess (221) is formed as a depression on the underside of the leaning section (22), wherein, corresponding to the respective locking element (215) on the outer circumference of the base (214), the wall of the respective mounting recess (221) is provided with a locking section (222), wherein, when the leaning section (22) is attached to the outer tube section (21),the base (214) is inserted into the mounting recess (221) and the respective locking element (215) is engaged in the corresponding locking section (222). [6] Armrest according to one of the preceding claims, wherein a locking element (215) located on any side is extended horizontally outwards on the outer circumference of the base (214) and the locking element (215) located on the opposite side is furthermore a fan-shaped column body and has an upper inclined surface (2151), wherein the backrest section (22) is brought into engagement with the corresponding horizontally extended locking element (215) and then pivoted and is brought into engagement and pivoted by the upper inclined surfaces (2151) of the remaining locking elements (215) slidingly with the outer circumference of the base (214), whereby the remaining locking elements (215) can be brought into engagement with the corresponding locking sections (222). [7] Armrest according to one of the preceding claims, wherein the bottom surface of the pressure control section (32) is further formed as an arc-shaped recess by means of a directional control arc recess (321), wherein the directional control arc recess (321) controls and drives the pressure control section (32) such that it protrudes from the opening (23) of the outer seat tube (2) and is pivoted within it.

Images