CN114052424B

CN114052424B - Chair armrest

Info

Publication number: CN114052424B
Application number: CN202010759543.7A
Authority: CN
Inventors: 陈得峻; 陈涪铭
Original assignee: Atec International Team Co Ltd
Current assignee: Atec International Team Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2024-05-07
Anticipated expiration: 2040-07-31
Also published as: CN114052424A

Abstract

The invention provides a chair armrest, which comprises an armrest structure, a first element, a second element and a bearing table; the armrest structure is composed of an armrest cover and an armrest seat which are vertically and correspondingly arranged, and a rectangular space is arranged in the armrest structure; the first element is arranged in the rectangular space of the armrest structure body and is arranged on a first chute of the armrest seat; the second element is arranged in the rectangular space of the armrest structure and is arranged on the first element; the bearing table is used for bearing the armrest structure; the armrest structure can move forwards and backwards relative to the first element, the second element, the bearing platform and a convex shaft by virtue of the first sliding groove so as to adjust the position; so that the chair armrest can still achieve the function of adjusting the movement in the front-back direction, the left-right direction or the rotation direction under the condition of effectively reducing the overall thickness.

Description

Chair armrest

Technical Field

The present invention relates to chair armrests, and more particularly, to a chair armrest capable of achieving multiple movement adjustment functions while effectively reducing the overall thickness.

Background

Existing popular chair armrests are designed with at least one movement adjustment function, such as a fore-and-aft movement adjustment function, or include a side-to-side movement and/or rotational adjustment function. The chair armrest adjustment device (Armrest adjustment device) disclosed in US8,474,914 is described herein with reference to fig. 7, 8, and 9 of US8,474,914, wherein the first component (number 50) and the second component (number 60) are generally assembled and positioned on the upper and lower sides of the armrest seat (armrest base, number 20), respectively, such that the overall thickness of the chair armrest is relatively increased, and the overall design aesthetic feeling of the chair armrest and the purchase desire of consumers are relatively impaired.

Disclosure of Invention

The primary objective of the present invention is to provide a chair armrest, wherein a first element and a second element of the chair armrest are disposed in a rectangular space of an armrest structure of the chair armrest and located on an upper side of an armrest seat of the armrest structure, so as to effectively solve the problem of high overall thickness of the existing chair armrest.

To achieve the above object, the present invention provides a chair armrest for mounting on a armrest rod on the left and right sides of a chair, comprising:

The handrail structure body is composed of a handrail cover and a handrail seat which are vertically corresponding to each other, and a rectangular space is formed in the handrail structure body; wherein the armrest cover is covered with an armrest pad; wherein the armrest seat is provided with a first chute and a first slot hole in the front-back direction which is adjacently arranged on the inner bottom surface of the first chute; wherein the armrest cover, the armrest seat and the armrest pad move synchronously;

The first element is arranged in the rectangular space of the armrest structure and is arranged on the first chute of the armrest seat, a second slotted hole in the left-right direction is arranged on the first element, and the second slotted hole corresponds to the first slotted hole; wherein the armrest structure can move forward and backward relative to the first element by virtue of the first chute;

The second element is arranged in the rectangular space of the armrest structure and is arranged on the first element, a lock hole is arranged on the second element, and the lock hole corresponds to the second slot hole and the first slot hole; and

The bearing table is arranged on the top surface of the handrail rod and is provided with a protruding shaft, the protruding shaft can sequentially penetrate through the first slotted hole and the second slotted hole from bottom to top and is propped against the lower surface of the lock hole of the second element, and the protruding shaft penetrates through the lock hole of the second element from top to bottom by virtue of a locking piece to be locked into the protruding shaft of the bearing table, so that the handrail structure is arranged on the bearing table;

when the armrest structure moves forward and backward relative to the bearing platform, the first element, the second element, the bearing platform and the protruding shaft are kept motionless, and the armrest structure can move forward and backward relative to the first element, the second element, the bearing platform and the protruding shaft by virtue of the first sliding groove so as to adjust the position.

The chair armrest is characterized in that a clamping groove is formed in the bottom surface of the second element, and the inner bottom surface of the clamping groove is adjacent to the lock hole; wherein the bearing platform further comprises a rotating groove and a cover plate; wherein the protruding shaft of the bearing table is further detachably arranged in the rotating groove, and the top and the bottom of the protruding shaft are respectively provided with a top protruding block and a bottom rotating disc; wherein the cover plate is provided with a through hole for the protruding shaft and the top protruding block to pass through upwards and be clamped in the clamping groove of the second element, and the protruding shaft and the top protruding block are locked in the protruding shaft and the top protruding block by virtue of the locking piece; when the armrest structure moves in a rotating direction relative to the bearing table, the bearing table and the cover plate keep motionless, and the armrest structure, the first element, the second element, the top protruding block and the bottom turntable can synchronously rotate in the rotating direction relative to the bearing table, the rotating groove and the cover plate by taking the axle center of the protruding shaft as a rotating shaft so as to adjust the position.

The chair armrest is characterized in that the armrest seat is further provided with a first caulking groove, and a damping gear is arranged in the first caulking groove; wherein the bottom surface of the first element is further provided with a first tooth row in the front-back direction; wherein the damping gear is correspondingly engaged with the first gear row; when the armrest structure is moved forwards and backwards to adjust the position, the first element, the second element, the bearing table and the protruding shaft are kept still, and the damping gear can rotate along the first tooth row at the moment so as to enable the armrest structure to perform forward and backward adjustment movement with damping effect.

A chair armrest for mounting on a grab rail on the left and right sides of a chair, comprising:

The first element is arranged in the rectangular space of the armrest structure and is arranged on the first chute of the armrest seat, a second slotted hole and a second chute are arranged on the first element in the left-right direction, and the second slotted hole corresponds to the first slotted hole; wherein the armrest structure can move forward and backward relative to the first element by virtue of the first chute;

The second element is arranged in the rectangular space of the armrest structure and is arranged on the second chute of the first element, a lock hole is arranged on the second element, and the lock hole corresponds to the second slot hole and the first slot hole; wherein the first element can move left and right relative to the second element by virtue of the second chute; and

when the armrest structure moves forwards and backwards relative to the bearing platform, the first element, the second element, the bearing platform and the convex shaft are kept motionless, and the armrest structure can move forwards and backwards relative to the first element, the second element, the bearing platform and the convex shaft by virtue of the first sliding groove so as to adjust the position;

When the armrest structure is moved to the left and right to adjust the position, the second element, the bearing platform and the convex shaft are kept still, and the armrest structure and the first element can move to the left and right to adjust the position relative to the convex shaft by virtue of the first slotted hole and the second slotted hole respectively.

The chair armrest is characterized in that the first element is further provided with a second caulking groove, and a damping gear is arranged in the second caulking groove; wherein the bottom surface of the second element is further provided with a second tooth row in the left-right direction; wherein the damping gear is correspondingly meshed with the second gear row; when the armrest structure is moved to the left and right direction to adjust the position, the second element, the bearing platform and the protruding shaft are kept still, and the damping gear can rotate along the second tooth row at the moment so as to enable the armrest structure to perform the left and right direction adjustment movement with damping function.

The handrail structure body is composed of a handrail cover and a handrail seat which are vertically corresponding to each other, and a rectangular space is formed in the handrail structure body; wherein the armrest cover is covered with an armrest pad; wherein the armrest seat is provided with a first chute and a first slot hole in the front-back direction which is adjacently arranged on the inner bottom surface of the first chute; wherein the armrest cover, the armrest seat and the armrest pad move synchronously; wherein the armrest structure further comprises an armrest opening, and the armrest opening is formed by a notch of the armrest pad, a notch of the armrest cover and a notch of the armrest seat which are vertically and correspondingly combined;

the second element is arranged in the rectangular space of the armrest structure and is arranged on the first element, a lock hole is arranged on the second element, and the lock hole corresponds to the second slot hole and the first slot hole;

The bearing table is arranged on the top surface of the handrail rod and is provided with a protruding shaft, the protruding shaft can sequentially penetrate through the first slotted hole and the second slotted hole from bottom to top and is propped against the lower surface of the lock hole of the second element, and the protruding shaft penetrates through the lock hole of the second element from top to bottom by virtue of a locking piece to be locked into the protruding shaft of the bearing table, so that the handrail structure is arranged on the bearing table; and

The button is inserted into the handrail opening from outside to inside and is positioned on the notch of the handrail seat, the outer end of the button is provided with a flat plate part, the inner end of the button is provided with an elastic piece for being elastically propped against a convex wall at the side edge of the notch of the handrail seat, a front-back connection sliding part is arranged between the flat plate part and the elastic piece, the inner wall of the connection sliding part is provided with a convex handle protruding inwards, and the convex handle is provided with a front-back button tooth row and can be meshed with a third tooth row of the first element;

When the button is pressed inwards, the flat plate part of the button is pressed to elastically move into the armrest opening, the button tooth row on the convex handle of the button moves inwards to be disengaged from the third tooth row of the first element, at the moment, the first element, the second element, the bearing table and the convex shaft are kept still, and the armrest structure can move forwards and backwards relative to the first element, the second element, the bearing table and the convex shaft by virtue of the first sliding groove to adjust the position.

The chair armrest is characterized in that the first element is further provided with a third slot hole in the front-back direction; wherein the bottom surface of the second element is provided with a clamping groove, and the inner bottom surface of the clamping groove is adjacent to the lock hole; wherein the bearing platform further comprises a rotating groove and a cover plate; wherein the protruding shaft of the bearing table is further detachably arranged in the rotating groove, and the top and the bottom of the protruding shaft are respectively provided with a top protruding block and a bottom rotating disc; wherein the cover plate is provided with a through hole for the protruding shaft and the top protruding block to pass through upwards and be clamped in the clamping groove of the second element, and the protruding shaft and the top protruding block are locked in the protruding shaft and the top protruding block by virtue of the locking piece; wherein the bottom surface of the second element is further provided with a fourth tooth row; the convex handle of the button is further provided with a third chute and a sliding block which can be slidably arranged in the third chute, an oblique sliding hole is arranged on the third chute to penetrate through the third chute, a sliding wing is arranged on the sliding block and used for sliding obliquely upwards or obliquely downwards in the oblique sliding hole, the top surface of the sliding block is provided with a sliding block tooth row which can upwards penetrate through the third slot hole and correspondingly engaged with the fourth tooth row of the second element, and a spring is arranged between the bottom of the sliding block and the third chute and used for providing the elastic force of the sliding block; when the button is pressed inwards, the flat plate part of the button is pressed to elastically move into the armrest opening, the sliding block tooth row on the convex handle of the button moves along the oblique slide Kong Xiangxie by virtue of the sliding wing to be in a meshing state with the fourth tooth row of the second element, at the moment, the bearing table and the cover plate are kept still, and the armrest structure, the first element, the second element, the top convex block and the bottom rotary table can synchronously rotate relative to the bearing table, the rotary groove and the cover plate by taking the axle center of the convex shaft as a rotary shaft to move towards the adjustment position.

The second element is arranged in the rectangular space of the armrest structure and is arranged on the second chute of the first element, a lock hole is arranged on the second element, and the lock hole corresponds to the second slot hole and the first slot hole; wherein the first element can move left and right relative to the second element by virtue of the second chute;

When the button is pressed inwards, the flat plate part of the button is pressed to elastically move into the armrest opening, the button tooth row on the convex handle of the button moves inwards to be out of engagement with the third tooth row of the first element, and at the moment, the armrest structure can be moved forwards and backwards to an adjustment position or moved leftwards and rightwards to an adjustment position;

So that the chair armrest can still achieve the function of adjusting the movement in the front-back direction, the left-right direction or the rotation direction under the condition of effectively reducing the overall thickness.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Figure 2 is a schematic perspective view of the invention mounted on a chair.

Fig. 3 is a schematic side plan view of fig. 2.

Fig. 4 is a partially exploded perspective view of fig. 1.

Fig. 5 is an enlarged schematic view of the bearing table, the male shaft and the cover plate of fig. 4.

FIG. 6 is a schematic view of a combination of the support table, the protruding shaft and the cover plate of FIG. 5.

Fig. 7 is an enlarged schematic view of the armrest seat, first element, and second element of fig. 4.

Fig. 8 is a partially exploded perspective view of the split armrest cover and armrest pad of fig. 1.

Fig. 9 is a partial plan side cross-sectional schematic view of fig. 1.

Fig. 10 is a schematic top plan view of fig. 1 (without the carrier).

Fig. 11 is a top plan view of the armrest structure of fig. 10 in an adjusted motion (forward and backward).

Fig. 12 is an enlarged schematic view of the button of fig. 4.

Fig. 13 is a combined schematic of the buttons of fig. 12.

FIG. 14 is a partial side cross-sectional schematic view of a row of slider teeth on a button of the present invention ratcheting into a fourth row of teeth of the second element.

FIG. 15 is a schematic side sectional view of a portion of a row of slider teeth on a button of the present invention spaced from a fourth row of teeth on a second element.

FIG. 16 is a schematic side cross-sectional view of a row of slider teeth on a button of the present invention spaced from a row of fourth teeth on a second element.

Fig. 17 is a schematic top plan view of fig. 1.

Fig. 18 is a top plan view of the armrest structure of fig. 17 in an adjusted motion (rotational orientation).

Fig. 19 is an exploded perspective view of the armrest seat (the first slot of the armrest seat is wide rectangular), the first element, and the second element of the present invention.

Fig. 20 is a schematic top plan view of fig. 1 (wherein the first slot shape of the armrest seat is a wide rectangle).

Fig. 21 is a top plan view of the armrest structure of fig. 20 in an adjusted motion (left-right direction).

Fig. 22 is an exploded perspective view of the armrest seat, first member, and second member (without the button and damper gear) of the present invention.

Reference numerals illustrate: 1-armrests of chairs; 10-an armrest structure; 10 a-rectangular space; 11-an armrest cover; 111-notch; 12-an armrest seat; 121-a first chute; 122-a first slot; 123-first caulking groove; 124-notch; 125-convex wall; 13-arm rest pad; 131-notch; 14-handrail opening; 20-a first element; 21-a second slot; 22-a first row of teeth; 23-a second chute; 24-a second caulking groove; 25-third row of teeth; 26-a third slot; 30-a second element; 31-a lock hole; 32-clamping grooves; 33-a second row of teeth; 34-fourth row of teeth; 40-a bearing table; 41-a convex shaft; 42-locking piece; 43-rotating groove; 44-positioning piece; 45-cover plate; 451-piercing; 46-top bumps; 47-bottom turntable; 471-positioning slot; 50-damping gear; 60-button; 61-plate portion; 62-an elastic member; 63-connecting the sliding part; 64-convex handle; 65-button rows; 66-a third chute; 661-oblique slide hole; 67-slide block; 671-sliding wings; 672-row of slider teeth; 68-springs; 2-a grab bar; 3-chair.

Detailed Description

The following detailed description of the structure and technical features of the present invention is provided with reference to the drawings, wherein each drawing is only for illustrating the structural relationship and related functions of the present invention, and thus the dimensions of each element in each drawing are not drawn to actual scale and are not intended to limit the present invention.

Generally, armrests are locked on the left and right sides of the chair (in terms of the sitting direction), and thus the directions referred to in the following disclosure as "front and back" and "left and right" are in terms of the sitting direction.

Referring to fig. 1 to 4, 9, 10, 17 and 20, the present invention provides a chair armrest 1 for mounting on a grab bar 2 on the left and right sides of a chair 3 as shown in fig. 2, the chair armrest 1 comprising an armrest structure 10, a first member 20, a second member 30, a bearing platform 40 and a button 60, but not limited thereto; the chair armrest 1 can be used without the button 60 as shown in fig. 22, but the button 60 can help the user lock the armrest structure 10 in the adjusted new position, so that the armrest structure 10 is not easy to be moved to the changed position as shown in fig. 10, 17 and 20.

The armrest structure 10 is composed of an armrest cover 11 and an armrest seat 12, which are vertically corresponding to each other, and a rectangular space 10a is provided in the armrest structure 10 as shown in fig. 8 and 9; wherein the armrest cover 11 is covered with an armrest pad 13; wherein the armrest seat 12 is provided with a first sliding slot 121 and a first slot 122 extending in a front-rear direction and adjacent to the inner bottom surface of the first sliding slot 121 as shown in fig. 4, 7, 19 and 22; wherein the armrest cover 11, the armrest seat 12, and the armrest pad 13 move synchronously as shown in fig. 11, 18, and 21; the armrest structure 10 further includes, but is not limited to, an armrest opening 14, wherein the armrest opening 14 is formed by a notch 131 of the armrest pad 13, a notch 111 of the armrest cover 11, and a notch 124 of the armrest seat 12, which are vertically combined as shown in fig. 4; the armrest structure 10 can be used without the armrest opening 14, but if the chair armrest 1 includes the button 60, the button 60 can be installed by providing the armrest opening 14 as shown in fig. 4.

The first element 20 is disposed in the rectangular space 10a of the armrest structure 10 and is mounted on the first chute 121 of the armrest seat 12 as shown in fig. 4 and 7 to 9, the first element 20 is provided with a second slot 21 and a second chute 23, but not limited thereto, and the second slot 21 corresponds to the first slot 122; the armrest structure 10 can move back and forth relative to the first element 20 by means of the first chute 121, as shown by arrow a in fig. 1 and arrow E in fig. 11.

The shape of the first slot 122 is further rectangular, but not limited to that shown in fig. 19, so that the area of the first slot 122 increases in the lateral direction.

The second element 30 is disposed in the rectangular space 10a of the armrest structure 10 and is mounted on the second chute 23 of the first element 20 as shown in fig. 4 and 7 to 9, a lock hole 31 is disposed on the second element 30, and the lock hole 31 corresponds to the second slot 21 and the first slot 122 as shown in fig. 4 and 7; wherein the first element 20 can move left and right relative to the second element 30 by means of the second chute 23 as indicated by arrow C in fig. 1 and arrow K in fig. 21.

The bearing platform 40 is disposed on the top surface of the handrail 2 for bearing the handrail structure 10, as shown in fig. 4, 8 and 9, the bearing platform 40 is provided with a protruding shaft 41, the protruding shaft 41 can sequentially pass through the first slot 122 and the second slot 21 from bottom to top, and is abutted against the lower surface of the locking hole 31 of the second element 30, and passes through the locking hole 31 of the second element 30 from top to bottom by means of a locking member 42 to be locked into the protruding shaft 41 of the bearing platform 40, as shown in fig. 4, 8 and 9, so that the handrail structure 10 is disposed on the bearing platform 40.

The button 60 is inserted into the handrail opening 14 from outside to inside and is located on the notch 124 of the handrail seat 12 as shown in fig. 4, 7, 10 and 20, so as to be convenient for the user to press, the outer end of the button 60 is provided with a flat plate portion 61, the inner end is provided with an elastic member 62 for elastically leaning against a convex wall 125 on the side edge of the notch 124 of the handrail seat 12, a front-back connection sliding portion 63 is provided between the flat plate portion 61 and the elastic member 62, an inner wall of the connection sliding portion 63 is provided with an inwardly protruding handle 64, and the protruding handle 64 is provided with a front-back button tooth row 65 and can be engaged with a third tooth row 25 of the first element 20 as shown in fig. 10.

When the button 60 is pressed inward, as shown by arrow D in fig. 11 and arrow J in fig. 21, the flat plate portion 61 of the button 60 is pressed to elastically move inward of the armrest opening 14, and the button teeth 65 on the boss 64 of the button 60 move inward to be disengaged from the third teeth 25 of the first element 20, as shown in fig. 11 and 21, so that the armrest structure 10 can be moved forward and backward to an adjustment position (as shown by arrow a in fig. 1 and arrow E in fig. 11) or moved leftward and rightward to an adjustment position (as shown by arrow C in fig. 1 and arrow K in fig. 21).

When the armrest structure 10 moves forward and backward relative to the support 40, the first element 20, the second element 30, the support 40 and the protruding shaft 41 remain stationary, and the armrest structure 10 can move forward and backward relative to the first element 20, the second element 30, the support 40 and the protruding shaft 41 by means of the first sliding groove 121 to adjust the position as shown in fig. 10 (before adjustment) and 11 (after adjustment).

When the armrest structure 10 is moved to the left and right to adjust the position, the second element 30, the bearing table 40 and the protruding shaft 41 are kept stationary, and the armrest structure 10 and the first element 20 can be moved to the left and right to adjust the position with respect to the protruding shaft 41 by means of the first slot 122 and the second slot 21, respectively, as shown in fig. 20 (before adjustment) and 21 (after adjustment).

Referring to fig. 4, 7 and 19, the first member 20 is further provided with a third slot 26, but not limited thereto, in a front-to-rear direction; wherein the bottom surface of the second element 30 is provided with a clamping groove 32, and the inner bottom surface of the clamping groove 32 is adjacent to the locking hole 31 as shown in fig. 7; wherein the support table 40 further comprises a rotating slot 43, at least one positioning member 44 and a cover 45, but not limited thereto, as shown in fig. 4 to 6; wherein the protruding shaft 41 of the bearing platform 40 is further detachably disposed in the rotating groove 43, but not limited thereto, the top and bottom of the protruding shaft 41 are further provided with a top protrusion 46 and a bottom turntable 47, respectively, as shown in fig. 5, and at least one positioning groove 471 is disposed on the sidewall of the turntable 47 corresponding to each positioning piece 44 for clamping and fixing each positioning piece 44, as shown in fig. 5; wherein the cover 45 has a through hole 451 for the protruding shaft 41 and the top protrusion 46 to pass through and be fastened in the fastening groove 32 of the second element 30, and the locking member 42 is locked into the protruding shaft 41 and the top protrusion 46 as shown in fig. 4, 8 and 9; wherein the bottom surface of the second member 30 is further provided with a fourth row of teeth 34, but not limited thereto.

The boss 64 of the button 60 further has a third sliding slot 66 and a sliding block 67 slidably disposed in the third sliding slot 66, but not limited to fig. 7, 12 to 16, an inclined sliding hole 661 is formed in the third sliding slot 66 to penetrate through the third sliding slot 66, as shown in fig. 12 to 16, a sliding wing 671 is formed on the sliding block 67 for sliding obliquely upward or downward in the inclined sliding hole 661 as shown by arrow G in fig. 15, a sliding block tooth row 672 on the top surface of the sliding block 67 can pass through the third slot 26 upwards to correspondingly engage with the fourth tooth row 34 of the second element 30, as shown in fig. 14, and a spring 68 is disposed between the bottom of the sliding block 67 and the third sliding slot 66 for providing a rebound force of the sliding block 67 as shown in fig. 12.

When the button 60 is pressed inward (as shown by arrow F in fig. 15 and arrow H in fig. 18), the flat plate portion 61 of the button 60 is pressed to elastically move into the armrest opening 14, the slider teeth 672 on the boss 64 of the button 60 moves obliquely downward (as shown by arrow G in fig. 15) along the oblique sliding hole 661 by the sliding wing 671 to disengage from the fourth teeth 34 of the second member 30, while the rest 40 and the cover 45 remain stationary, and the armrest body 10, the first member 20, the second member 30, the top bump 46 and the bottom turntable 47 can rotate synchronously with respect to the rest 40, the rotation groove 43 and the cover 45 about the axis of the boss 41 (as shown by arrow B in fig. 1 and arrow I in fig. 18) to adjust the position as shown in fig. 18.

When each positioning member 44 is engaged in each positioning groove 471 of the previous or next one during the rotation direction adjustment movement, the rotation direction adjustment movement of the armrest structure 10 is stopped within a limited angle range as shown in fig. 18, so as to facilitate the user to quickly position the armrest structure 10.

Referring to fig. 7, 10 and 11, the armrest seat 12 is further provided with a first caulking groove 123, but not limited thereto, and a damping gear 50 is disposed in the first caulking groove 123; wherein the bottom surface of the first member 20 is further provided with a front-rear first row of teeth 22 as shown in fig. 7, 10 and 11, but not limited thereto; wherein the damping gear 50 is correspondingly engaged with the first gear row 22 as shown in fig. 10; when the armrest structure 10 is moved back and forth to the adjustment position, the first element 20, the second element 30, the bearing platform 40 and the protruding shaft 41 remain stationary, and the damping gear 50 can rotate along the first gear row 22, so that the armrest structure 10 performs a back and forth adjustment movement with damping effect, as shown by arrow E in fig. 11.

Referring to fig. 7, 20 and 21, the first member 20 is further provided with a second slot 24, but not limited thereto, in which a damping gear 50 is disposed; wherein the bottom surface of the second member 30 is further provided with a second tooth row 33 in a left-right direction as shown in fig. 7, 20 and 21, but not limited thereto; wherein the damping gear 50 is correspondingly engaged with the second gear row 33 as shown in fig. 20; when the armrest structure 10 is moved to the left and right adjustment position, the second element 30, the bearing platform 40 and the protruding shaft 41 are kept stationary, and the damping gear 50 can rotate along the second gear row 33, so that the armrest structure 10 can perform the left and right adjustment movement with damping effect, as shown by arrow K in fig. 21.

The chair armrest 1 can be used without the damping gear 50 as shown in fig. 22, but the damping gear 50 can provide a smoother chair armrest operation experience for users, which is beneficial to improving the market competitiveness of the product.

The above description is illustrative of the invention and is not to be construed as limiting, and it will be understood by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A chair armrest for mounting on a grab rail on the left and right sides of a chair, comprising:

the first element is arranged in the rectangular space of the armrest structure and is arranged on the first chute of the armrest seat, the first element cannot be exposed out of the armrest structure, a second slotted hole in the left-right direction is arranged on the first element, and the second slotted hole corresponds to the first slotted hole; wherein the armrest structure can move forward and backward relative to the first element by virtue of the first chute;

The second element is arranged in the rectangular space of the armrest structure body and is arranged on the first element, the second element is not exposed out of the armrest structure body, a lock hole is arranged on the second element, and the lock hole corresponds to the second slot hole and the first slot hole; and

The bottom surface of the second element is provided with a clamping groove, and the inner bottom surface of the clamping groove is adjacent to the lock hole; wherein the bearing platform also comprises a rotating groove and a cover plate; wherein the protruding shaft of the bearing table is detachably arranged in the rotating groove, and the top and the bottom of the protruding shaft are respectively provided with a top protruding block and a bottom rotating disc; wherein the cover plate is provided with a through hole for the protruding shaft and the top protruding block to pass through upwards and be clamped in the clamping groove of the second element, and the protruding shaft and the top protruding block are locked in the protruding shaft and the top protruding block by virtue of the locking piece;

When the armrest structure moves in a rotating direction relative to the bearing table, the bearing table and the cover plate keep motionless, and the armrest structure, the first element, the second element, the top protruding block and the bottom turntable can synchronously rotate in the rotating direction relative to the bearing table, the rotating groove and the cover plate by taking the axle center of the protruding shaft as a rotating shaft so as to adjust the position.

2. The chair armrest according to claim 1, wherein: the armrest seat is also provided with a first caulking groove, and a damping gear is arranged in the first caulking groove; wherein the bottom surface of the first element is also provided with a first tooth row in the front-back direction; wherein the damping gear is correspondingly engaged with the first gear row; when the armrest structure is moved forwards and backwards to adjust the position, the first element, the second element, the bearing table and the protruding shaft are kept still, and the damping gear can rotate along the first tooth row at the moment so as to enable the armrest structure to perform forward and backward adjustment movement with damping effect.

3. A chair armrest for mounting on a grab rail on the left and right sides of a chair, comprising:

The first element is arranged in the rectangular space of the armrest structure and is arranged on the first chute of the armrest seat, the first element is not exposed out of the armrest structure, a second slot hole and a second chute are arranged on the first element in the left-right direction, and the second slot hole corresponds to the first slot hole; wherein the armrest structure can move forward and backward relative to the first element by virtue of the first chute;

The second element is arranged in the rectangular space of the armrest structure and is arranged on the second chute of the first element, the second element is not exposed out of the armrest structure, a lock hole is arranged on the second element, and the lock hole corresponds to the second slot hole and the first slot hole; wherein the first element can move left and right relative to the second element by virtue of the second chute; and

when the armrest structure is moved to the left and right to adjust the position, the second element, the bearing table and the convex shaft are kept still, and the armrest structure and the first element can move to the left and right to adjust the position relative to the convex shaft by virtue of the first slotted hole and the second slotted hole respectively;

4. A chair armrest as claimed in claim 3, wherein: the armrest seat is also provided with a first caulking groove, and a damping gear is arranged in the first caulking groove; wherein the bottom surface of the first element is also provided with a first tooth row in the front-back direction; wherein the damping gear is correspondingly engaged with the first gear row; when the armrest structure is moved forwards and backwards to adjust the position, the first element, the second element, the bearing table and the protruding shaft are kept still, and the damping gear can rotate along the first tooth row at the moment so as to enable the armrest structure to perform forward and backward adjustment movement with damping effect.

5. A chair armrest as claimed in claim 3, wherein: the first element is also provided with a second caulking groove, and a damping gear is arranged in the second caulking groove; wherein the bottom surface of the second element is also provided with a second tooth row in the left-right direction; wherein the damping gear is correspondingly meshed with the second gear row; when the armrest structure is moved to the left and right direction to adjust the position, the second element, the bearing platform and the protruding shaft are kept still, and the damping gear can rotate along the second tooth row at the moment so as to enable the armrest structure to perform the left and right direction adjustment movement with damping function.

6. A chair armrest for mounting on a grab rail on the left and right sides of a chair, comprising:

The second element is arranged in the rectangular space of the armrest structure body and is arranged on the first element, the second element is not exposed out of the armrest structure body, a lock hole is arranged on the second element, and the lock hole corresponds to the second slot hole and the first slot hole;

The button is inserted into the handrail opening from outside to inside and is positioned on the notch of the handrail seat, the outer end of the button is provided with a flat plate part, the inner end of the button is provided with an elastic piece for being elastically propped against a convex wall at the side edge of the notch of the handrail seat, a front-back connection sliding part is arranged between the flat plate part and the elastic piece, the inner side wall of the connection sliding part is provided with a convex handle protruding inwards, and the convex handle is provided with a front-back button tooth row and can be meshed with a third tooth row of the first element;

When the button is pressed inwards, the flat plate part of the button is pressed to elastically move into the armrest opening, the button tooth row on the convex handle of the button moves inwards to be disengaged from the third tooth row of the first element, at the moment, the first element, the second element, the bearing table and the convex shaft are kept still, and the armrest structure can move forwards and backwards relative to the first element, the second element, the bearing table and the convex shaft by virtue of the first sliding groove to adjust the position;

The first element is also provided with a third slot hole in the front-back direction; wherein the bottom surface of the second element is provided with a clamping groove, and the inner bottom surface of the clamping groove is adjacent to the lock hole; wherein the bearing platform also comprises a rotating groove and a cover plate; wherein the protruding shaft of the bearing table is detachably arranged in the rotating groove, and the top and the bottom of the protruding shaft are respectively provided with a top protruding block and a bottom rotating disc; wherein the cover plate is provided with a through hole for the protruding shaft and the top protruding block to pass through upwards and be clamped in the clamping groove of the second element, and the protruding shaft and the top protruding block are locked in the protruding shaft and the top protruding block by virtue of the locking piece; wherein the bottom surface of the second element is also provided with a fourth tooth row; the convex handle of the button is also provided with a third chute and a sliding block which can be slidably arranged in the third chute, an oblique sliding hole is arranged on the third chute to penetrate through the third chute, a sliding wing is arranged on the sliding block and used for sliding obliquely upwards or obliquely downwards in the oblique sliding hole, the top surface of the sliding block is provided with a sliding block tooth row which can upwards penetrate through the third slot hole and correspondingly engaged with the fourth tooth row of the second element, and a spring is arranged between the bottom of the sliding block and the third chute and used for providing the elastic force of the sliding block;

when the button is pressed inwards, the flat plate part of the button is pressed to elastically move into the armrest opening, the sliding block tooth row on the convex handle of the button moves along the oblique slide Kong Xiangxie by virtue of the sliding wing to be in a meshing state with the fourth tooth row of the second element, at the moment, the bearing table and the cover plate are kept still, and the armrest structure, the first element, the second element, the top convex block and the bottom rotary table can synchronously rotate relative to the bearing table, the rotary groove and the cover plate by taking the axle center of the convex shaft as a rotary shaft to move towards the adjustment position.

7. The chair armrest according to claim 6, wherein: the armrest seat is also provided with a first caulking groove, and a damping gear is arranged in the first caulking groove; wherein the bottom surface of the first element is also provided with a first tooth row in the front-back direction; wherein the damping gear is correspondingly engaged with the first gear row; when the armrest structure is moved forwards and backwards to adjust the position, the first element, the second element, the bearing table and the protruding shaft are kept still, and the damping gear can rotate along the first tooth row at the moment so as to enable the armrest structure to perform forward and backward adjustment movement with damping effect.

8. A chair armrest for mounting on a grab rail on the left and right sides of a chair, comprising:

the second element is arranged in the rectangular space of the armrest structure and is arranged on the second chute of the first element, the second element is not exposed out of the armrest structure, a lock hole is arranged on the second element, and the lock hole corresponds to the second slot hole and the first slot hole; wherein the first element can move left and right relative to the second element by virtue of the second chute;

9. The chair armrest according to claim 8, wherein: the armrest seat is further provided with a first caulking groove, and a damping gear is arranged in the first caulking groove; wherein the bottom surface of the first element is further provided with a first tooth row in the front-back direction; wherein the damping gear is correspondingly engaged with the first gear row; when the armrest structure is moved forwards and backwards to adjust the position, the first element, the second element, the bearing table and the protruding shaft are kept still, and the damping gear can rotate along the first tooth row at the moment so as to enable the armrest structure to perform forward and backward adjustment movement with damping effect.

10. The chair armrest according to claim 8, wherein: the first element is further provided with a second caulking groove, and a damping gear is arranged in the second caulking groove; wherein the bottom surface of the second element is further provided with a second tooth row in the left-right direction; wherein the damping gear is correspondingly meshed with the second gear row; when the armrest structure is moved to the left and right direction to adjust the position, the second element, the bearing platform and the protruding shaft are kept still, and the damping gear can rotate along the second tooth row at the moment so as to enable the armrest structure to perform the left and right direction adjustment movement with damping function.