TWI414256B - Mechanism of chair armrest - Google Patents

Abstract

The invention discloses a mechanism of chair armrest. The mechanism includes a lower cover having a receiving space having a front-rear guiding block and a left-right guiding block and then makes these two components being positioned on a support of the chair armrest. One side of the front-rear guiding block pivots two sliding gear wheels and a control element is installed on the front-rear guiding block so that tooth of gear at one side of the control element can engage with the sliding gear wheels and then the outer periphery of the lower cover connects with a chair armrest. Thus, while adjusting the position of the chair armrest, users only need to press the control element protruding outwardly to make a guiding portion the control element moving upward along the against portion of the lower cover so as to make the tooth of gear at the side of the control element release from the sliding gear wheels and protrudent ribs of the control element release from cavities of the left-right guiding block to let the chair armrest can be adjusted upwardly and downwardly; leftward and rightward simultaneously.

Description

Handrail structure

The invention provides a handrail structure, mainly for adjusting the orientation of the handrails arranged on both sides of the seat in the forward/backward/leftward direction, and only pressing the control member on one side to control the forward and backward directions The left and right displacement members form a free state, which facilitates the user to synchronize the forward and backward and left and right armrest orientation adjustment designers.

According to the relevant industry, in the manufacture of various kinds of seats for the comfort function of the use, the seat cushion, the backrest and the armrests of the seat are effectively designed to make the whole seat in use. Adjust the best according to the individual body shape. In this case, the armrest actuation group of the seat is used for the description. The existing seat armrest is usually divided into an up and down direction lifting body, a front and rear azimuth displacement adjusting body, or an internal and external displacement. The position adjustment group, the adjustment group for tilting up and down, and the inner and outer yaws, through the preset action groups, the handrail can be adjusted according to the needs of the individual elbows for better orientation; The adjustment group of the front and rear displacement of the existing seat armrest and the adjustment group of the internal and external displacement are quite diverse in the embodiment, and the user can appropriately select according to personal operation habits.

The invention is designed according to the adjustment group of the front and rear displacement/internal and external displacement of the armrests which are arranged on both sides of the seat, in order to adjust the orientation of the handrail in the forward/backward/leftward direction. It is only necessary to press the control member on one side to make the front and rear and the left and right displacement members of the control state free, which facilitates the user to perform the synchronization of the forward and backward and left and right handrail orientation adjustments.

The main purpose of the present invention is to provide a lower cover, a front and rear guide block, two sliding gears pivoted in a preset orientation of the front and rear guide blocks, a left and right guide block, and an active side. Forming a control member having a tooth portion and an armrest; wherein an inner space is formed in the lower cover through the through hole, so as to allow the front and rear guide blocks to be placed therebetween and between the front and rear guide blocks The recessed space of the passage is to allow a pair of left and right guide blocks to be correspondingly inserted, and then the threaded solid element passes through the slot defined by the left and right guide blocks and the middle section of the front and rear guide blocks, and is positioned at the upper end of the armrest support member. And a side portion of the front and rear guide blocks is provided with a portion protruding in the recessed space to allow the sliding gear to be pivoted therebetween and to engage with the tooth formed by the side layer in the lower cover. The predetermined orientation of the lower cover on the side of the tooth portion is formed by a notch to allow the control member to be placed in a meandering shape, and the toothed portion is formed on the side of the control member to be pivoted before and after The sliding gears on both sides of the guide block are engaged At the bottom of the control member, a predetermined orientation is provided with a plurality of protruding ribs at a distance to fit all the recesses between the plurality of spaced ribs of the corresponding portions of the left and right guide blocks, and the other side of the control member Both sides are recessed with holes to allow the elastic member to be inserted and the outer end can be in contact with the corresponding inner circumference of the lower cover; and the control member protruding from the outer side of the lower cover is formed at the bottom. The inner upwardly inclined guiding portion is in contact with the outwardly inclined downward abutting portion of the corresponding portion of the lower cover, and a protruding portion is protruded on both sides of the upper surface of the control member to allow The elastic member is nested; then, the outer periphery of the lower cover is correspondingly covered with an armrest, and the two members are fixedly integrated by a screwing member, and a side of the armrest is recessed to allow a gap to allow The control member can protrude outwardly from the outer end; accordingly, when the armrest assembly is to be adjusted in the direction of the front-rear direction or the left-right direction, the control member that protrudes outward only needs to be pressed. The intercepting portion of the control member is pushed along the abutting portion of the lower cover, and Control unit The toothing of one side is disengaged from the engagement of the corresponding two sliding gears, and the protruding rib of the bottom part is also separated from the concave portion between the corresponding spacing protrusion ribs of the left and right guide blocks to form a free state, which is favorable for the user to perform synchronous forward and backward directions. And the left and right handrail orientation adjustment.

A second object of the present invention is to form a tilting auxiliary guiding portion on the side of the other side of the sliding gear on the front and rear guide blocks of the armrest assembly, which are placed in the lower cover, as the upper end of the assembly. The control member is pressed inwardly so that the intercepting portion of the control member is pushed and displaced along the abutting portion of the lower cover, and the end of the control member can also be formed according to the two auxiliary guiding portions. The block maintains an internal shift of height.

The third object of the present invention is that the front and rear guide blocks of the armrest assembly body that are placed in the lower cover of the accommodating space are formed with convex portions on both sides of the preset section at the bottom thereof, so as to fit the predetermined groove of the corresponding orientation of the lower cover. It is advantageous for the lower cover to have better smoothness when displaced along the front and rear guide blocks.

The fourth object of the present invention is that the left and right guide blocks of the recessed space of the front and rear guide blocks are placed at the bottom of the armrest assembly to form a convex portion to match the corresponding orientation of the front and rear guide blocks. The holes, while facilitating the left and right displacement of the handrail, can be guided by the protrusions of the left and right guide blocks to maintain a better smoothness.

The armrest structure (such as the first and second figures) designed by the present invention mainly comprises the armrest assembly (7) disposed on both sides of the seat, including a lower cover (1), a front and rear guide block (2), and two pivots. The sliding gear (3) with a preset orientation of the front and rear guide blocks (2), a left and right guide block (4), a control member (5) having a tooth portion (51) formed on the active side, and an armrest (6) . Wherein; the lower cover (1) has a receiving space (11) through which the intermediate passage is formed through the through hole (12), and an inner surface on the side of the lower cover (1) is a tooth portion (13). A notch (14) is formed in a predetermined orientation by the lower cover (1) on the side of the tooth portion (13), and is in place. The outer layer of the notch (14) is an abutting portion (15) protruding downwardly (as shown in the fourth figure), and at the same time, the predetermined passage of the receiving space (11) of the lower cover (1) is formed Strip (16).

a front and rear guide block (2), which is a slightly shorter length component according to the receiving space (11) of the lower cover (1), and a space (21) is recessed in the middle section of the front and rear guide blocks (2) And in the space (21) is a transverse slot (22) penetrating at two intervals, and a side layer of the front and rear guide blocks (2) is provided with a convex portion on both sides of the recessed space (23) (24), in order to allow the sliding gear (3) to be pivoted therebetween, and then a tilting auxiliary guiding portion (25) is formed on both sides of the other side layer of the front and rear guide blocks (2) of the sliding gear (3), At the bottom of the front and rear guide blocks (2), the front side of the preset section is formed with a convex portion (26) to fit the corresponding groove (16) cut into the corresponding orientation of the lower cover (1), and the lower cover (1) is facilitated It has better smoothness when displaced along the front and rear guide blocks (2).

a left and right guide block (4), which is a component that guides the left and right displacement according to the recessed space (21) of the front and rear guide blocks (2), and the outer periphery of the left and right guide blocks (4) is a plurality of spaced ribs (41) are provided, and a recess (42) is formed between each of the two ribs (41) (as shown in the fourth figure), and the front and rear spacing is formed by the bottom of the left and right guide blocks (4). The convex portion (43) is matched with the slot (22) which is preset to the corresponding orientation of the front and rear guide blocks (2), and the left and right displacement of the handrail (6) is facilitated to drive the left and right guide blocks (2) to be guided by the left and right guides. The block (4) is limited by the convex portion (43) to maintain a better degree of smoothness.

a control member (5) which is a squeezing member which is sleeve-shaped and can be sleeved into the accommodating space (11) of the lower cover (1), and a tooth portion (51) is formed on one side of the control member (5) And at the bottom of the control member (5), a predetermined orientation is provided with a plurality of protruding ribs (52) (as shown in the fourth figure), and a hole is formed on both sides of the control member (5). ) to allow the elastic member (54) to be inserted and to be placed against the corresponding inner periphery of the lower cover (1) while the outer end is in contact with At the bottom of the outer end of the control member (5), an inwardly inclined guiding portion (55) is formed, and on both sides of the upper surface of the control member (5), a truncated portion (56) is protruded to allow The elastic element (57) is nested.

An armrest (6) is a hand restrest member according to the outer periphery of the lower cover (1), and a notch (61) is recessed around one side of the armrest (6) to allow the control member (5) Its outward end can protrude (as shown in the fourth figure).

The above-mentioned lower cover (1), front and rear guide blocks (2), two sliding gears (3), left and right guide blocks (4), control members (5), and handrails (6) are arranged (for example, second , three or four diagrams), the front and rear guide blocks (2) are correspondingly placed into the lower cover (1) of the accommodation space (11), and the space (21) recessed in the middle section of the front and rear guide blocks (2) is allowed The left and right guide blocks (4) are correspondingly placed, and are passed through the left and right guide blocks (4) and the slots (22) defined by the middle and the middle of the front and rear guide blocks (2) by the screwing member (44), and are positioned at a bearing portion (72) at an upper end of the armrest support member (71); and correspondingly fitting the two sliding gears (3) into a branch portion (24) of a space (23) on both sides of the front and rear guide blocks (2) The two sliding gears (3) are pivoted and can be engaged with the teeth (13) of the side layer of the lower cover (1).

In addition, the control member (5) of the dome shape is placed between the lower cover (1) and the upper ends of the left and right guide blocks (4) and the front and rear guide blocks (2), and the teeth of one side of the control member (5) are provided. The portion (51) can be engaged with the two sliding gears (3), and the plurality of projecting ribs (52) spaced apart from the bottom of the control member (5) are a plurality of paths corresponding to the left and right guide blocks (4) The recess (42) between the pitch ribs (41) is in the all-in state (as shown in the fourth figure); and the end of the control member (5) protrudes from the lower cover (1) on the corresponding side of the gap (14) So that the truncated inwardly inclined guiding portion (55) at the bottom of the end of the control member (5) is in a position facing the portion of the lower cover (1) which is directed downwardly toward the lower abutting portion (15) In contact with the convex portion (56) on both sides of the upper layer of the control member (5), the elastic member (57) is inserted; after that, an armrest (6) is correspondingly placed under the cover The cover (1) has its outer periphery and is fixedly integrated by means of a screwing element (17), thereby forming an armrest assembly (7) (as shown in the first figure).

The armrest assembly (7) is adjusted in the forward/rear direction or the left-right direction (as shown in the fifth figure), and the control member (5) that protrudes outward is only required to be pressed inward (as shown in the fifth figure). In the direction of the arrow, the control member (5) can be pushed along the lower cover (1) with its abutment portion (15) (as shown in the seventh figure), and when the control member (5) Simultaneously pushing the upward displacement, the end of the control member (5) can be formed to maintain a height internal displacement with the left and right guide blocks (4) according to the two auxiliary guiding portions (25), and control The tooth portion (51) on one side of the piece (5) is disengaged from the engagement of the corresponding two sliding gears (3) (as shown in the sixth figure), and the protruding rib (52) at the bottom thereof is also separated from the corresponding spacing of the left and right guide blocks (4). The concave portion (42) between the protruding ribs (41) is restricted (as shown in the seventh figure) to form a free state. At this time, the user can hold the handrail (6) by hand to perform synchronous forward and backward directions. Azimuth adjustment in the left and right direction (such as the imaginary line displacement in the eighth figure).

The control member (5) can be released by directly waiting for the handrail (6) to complete the required forward and backward and left and right positions, so that the tooth portion (51) on one side is again engaged with the two sliding gears (3) ( As shown in the third figure), the bottom rib (52) is again cut into the left and right guide blocks (4) between the corresponding pitch ribs (41) between the recesses (42) (as shown in the fourth figure), forming an exact The armrest orientation is limited.

〔this invention〕

(1)‧‧‧下盖

(11)‧‧‧ accommodating space

(12) ‧‧‧through holes

(13, 51) ‧ ‧ teeth

(14, 61) ‧ ‧ gap

(15) ‧‧‧Responsible Department

(16) ‧‧‧ slots

(17, 44) ‧ ‧ snail components

(2) ‧ ‧ front and rear guide blocks

(21, 23) ‧ ‧ space

(22) ‧‧‧Slots

(24) ‧ ‧ branch

(25) ‧ ‧ Auxiliary Guidance Department

(26, 43, 56) ‧ ‧ convex

(3)‧‧‧Sliding gears

(4) ‧ ‧ left and right guide blocks

(41, 52) ‧ ‧ rib

(42) ‧ ‧ recess

(5) ‧‧‧Controls

(53) ‧ ‧ holes

(54, 57) ‧‧‧Flexible components

(55) ‧ ‧ Guidance Department

(6) ‧‧‧Handrails

(7) ‧‧‧Handrail body

(71) ‧‧‧Support

(72) ‧ ‧ Carrying Department

First figure: a perspective view of the armrest assembly of the present invention

Second: Schematic diagram of the disassembly of the armrest assembly of the present invention

Third: a schematic top view of the armrest assembly of the present invention

Figure 4: Schematic representation of the A-A section of the third diagram

Figure 5: Schematic diagram of the implementation of the control member of the armrest of the present invention before being actuated

Fig. 6 is a schematic view showing the state in which the tooth portion of the sliding gear and the control member of the present invention is disengaged

Figure 7: Schematic diagram of the B-B section of the sixth figure

Figure 8: Schematic diagram of the implementation of the handrail of the present invention for front-back and left-right displacement

(1)‧‧‧下盖

(13, 51) ‧ ‧ teeth

(2) ‧ ‧ front and rear guide blocks

(3)‧‧‧Sliding gears

(4) ‧ ‧ left and right guide blocks

(5) ‧‧‧Controls

(54, 57) ‧‧‧Flexible components

(6) ‧‧‧Handrails

(7) ‧‧‧Handrail body

Claims (4)

The utility model relates to an armrest structure, which comprises a bearing part coupled to an upper end of an armrest support member, and an armrest assembly which is arranged for front-back/left-right displacement by an upper end of the carrying portion; the armrest assembly is characterized in that: the armrest assembly The utility model comprises a lower cover, a front and rear guide block, two sliding gears pivoted in a preset orientation of the front and rear guide blocks, a left and right guide block, a control member formed with a toothed portion on the active side, and an armrest; The interior is formed with a receiving space through which the middle section passes through the through hole, so that the front and rear guide blocks can be placed therebetween, and the space recessed in the middle section of the front and rear guide blocks allows a left and right guide blocks to be correspondingly inserted, and then the snail is inserted. The solid component passes through the slot defined by the left and right guide blocks and the middle and rear sections of the front and rear guide blocks, and is positioned at the upper end of the armrest support member; and the one side of the front and rear guide blocks is surrounded by the recessed space. Providing a portion for allowing the sliding gear to be pivoted therebetween and engaging a tooth portion formed by the side layer of the lower cover; the predetermined orientation of the lower cover on the side of the tooth portion is a gap To allow for the control of the shape In the middle of the control member, a tooth portion is formed on one side of the control member to cooperate with the sliding gear pivoted on both sides of the front and rear guide blocks; at the bottom of the control member, a plurality of protruding ribs are arranged at a predetermined interval. The recesses between the plurality of spaced ribs provided in the corresponding portions of the left and right guide blocks are all inserted and/or detached, and on both sides of the control member, holes are recessed to allow the elastic members to be placed therein. The outer end can be in contact with the corresponding inner circumference of the lower cover; and the control member protruding from the outer side of the lower cover forms an inwardly inclined guiding portion at the bottom to cooperate with the corresponding portion of the lower cover. Leaning outwards For one-way contact, a pair of protrusions are protruded on both sides of the upper surface of the control member to allow the elastic member to be nested; and then the outer periphery of the lower cover is correspondingly covered with an armrest, and the two are fixed by the screwing member. The component is fixedly integrated, and a side of the armrest is recessed with a notch to allow the control member to protrude toward the outer end; accordingly, the armrest assembly is intended to be front and rear/or left and right. When the orientation is adjusted, the control member only needs to press the outer protruding control member, so that the intercepting portion of the control member is pushed along the abutting portion of the lower cover, and the control member side is pushed. The teeth are disengaged from the engagement of the corresponding two sliding gears, and the protruding ribs at the bottom thereof are also separated from the recesses between the corresponding pitch ribs of the left and right guide blocks to form a free state, which facilitates the user to perform synchronous forward and backward directions. The orientation of the handrail is adjusted. The armrest structure of claim 1, wherein the armrest assembly is placed in the lower cover, and the front and rear guide blocks of the receiving space are formed on the other side of the sliding gear to form an upward tilting auxiliary guide. The control member disposed at the upper end thereof is biased inwardly so that the intercepting portion of the control member is pushed and displaced along the abutting portion of the lower cover, and the end of the control member can also be guided by the two auxiliary guides. The portion is formed to maintain a height internal shift with the left and right guide blocks. The armrest structure of claim 1, wherein the armrest assembly is placed in the lower cover, and the front and rear guide blocks of the receiving space are formed on the sides of the preset section at the bottom thereof to form a convex portion to match the corresponding orientation of the lower cover. The groove is provided to facilitate the smoothness of the lower cover when it is displaced along the front and rear guide blocks. The armrest structure of claim 1, wherein the armrest assembly is placed in the front and rear guide blocks, and the left and right guide blocks of the recessed space are formed with a convex portion at a bottom portion thereof to match the front and rear guide blocks. Oriented slot, which is good for handrails The left and right displacements can be guided by the protrusions of the left and right guide blocks while driving the front and rear guides to maintain a better degree of smoothness.