TWI580381B - Chair armrest adjustment mechanism module - Google Patents

Description

Chair armrest adjustment mechanism module

The invention relates to an adjustment mechanism module for a chair armrest, in particular to an adjustment mechanism module composed of a sliding member, a fixing member and a button member, which can be conveniently installed on the top end of the straight arm of the armrest of the chair.

In order to improve the convenience and comfort of the chair armrest, the armrests of the chair are equipped with various adjustment mechanisms, but the various adjustment mechanisms must meet the needs of mass production and cost control in structural design or manufacturing, otherwise it is not conducive to the chair. Competition in the armrest market.

The armrest of the chair generally comprises an armrest bracket and an armrest cushion which are locked on the left and right sides of the seat (in the direction of the seat), and the armrest cushion is assembled and wrapped on the armrest bracket. On the top of the branch. The adjustment mechanism of the conventional chair armrest includes: a front-rear position or a left-right position adjustment mechanism, which is generally locked and assembled on the top end of the straight support of the armrest bracket, for example, locked on the top surface of an outer straight bracket in the armrest of the chair The top surface of the upper or inner T-shaped frame is not limited; and the height-adjusting mechanism is generally stored in the straight branch of the armrest bracket. For example, US2008/0084103 discloses a movable adjustment armrest pad for forward and backward, left and right. Towards and up and down. However, conventional adjustment mechanisms generally have the disadvantages of more components and more complicated structures, which leads to the troublesome and difficult assembly of the armrests. In particular, the assembly work of the adjustment mechanism in the conventional armrests is the use of the adjustment mechanism. Separate components are first collected at a workstation, and then the staff separates the separate components one by one. It is sequentially locked on an armrest bracket to complete a chair armrest finished product in one assembly; moreover, the separate components of the conventional adjustment mechanism are first assembled into an adjustment mechanism semi-finished product (or module), and then provided to the subsequent The assembly operation is used, but the components in the semi-finished product (module) may be assembled from top to bottom or from bottom to top, and cannot be integrated into one body, which is extremely easy to change direction during handling, transportation or subsequent assembly. Or the orientation is inverted and separated, detached or lost, which is relatively inconvenient for subsequent assembly, which is not conducive to the production management, mass production and market competition of the armrest.

It can be seen from the above that for the adjustment mechanism of the armrest of the chair, the structure and/or the process of the prior art in the prior art is difficult to meet the requirements of actual use, so there is still room for further improvement.

The main purpose of the present invention is to provide an adjustment mechanism module for a chair armrest, comprising a sliding member, a fixing member and a button member, wherein the fixing member is slidably embedded in the concave space of the sliding member, The bottom surface of the fixing member is provided with two protrusions for respectively correspondingly sleeved and slidably disposed on the bottom surface of the sliding member, and the two protrusions are respectively provided with corresponding perforations for correspondingly locking in the chair. a top end of the straight arm of the armrest so that the armrest pad of the armrest of the chair can be assembled on the sliding member and then adjusted for forward and backward movement; wherein the button member is sandwiched between the sliding member and the fixing member The protrusion is elastically displaced or reset when pressed, and the button member is provided with a tooth row for correspondingly engaging or disengaging a tooth row provided by the fixing member, wherein when the button member is pressed, the button The tooth row of the piece will leave the tooth row of the fixing member, and the sliding member can move forward and backward relative to the fixing member to synchronously adjust the front and rear position of the armrest pad, thereby making the adjusting mechanism module convenient for handling. , transport or subsequent assembly process, Into a modular and mass production effect.

In order to achieve the above object, the adjustment mechanism module of the chair armrest of the present invention comprises: The sliding member is a front and rear elongated casing and has a front, rear, left and right circumferential wall and a concave space surrounded by the circumferential wall, and the upper part is assembled and combined with the chair The armrest pad of the armrest comprises: at least one inwardly protruding hook is respectively disposed on an inner surface of the left and right dimple walls; and the second rear row is formed in a straight line on the bottom surface of the recessed space a notch is disposed on one of the left and right dike walls; and at least one stop rib is protruded from the bottom surface of the concave space and adjacent to the notch; a fixing member is slid to a length Before the small piece, the long piece can be embedded in the concave space of the sliding member and can be slid, including: two front and rear long grooves are respectively disposed on the left and right edges of the top surface thereof to correspond to the sliding The protruding hook of the piece is capable of pressing down and sliding on the long groove; the two protruding columns are respectively disposed on the rear side of the bottom surface thereof, and the respective protruding columns can respectively be sleeved and slid in the sliding The front and rear of the piece are longitudinally grooved, wherein the two protrusions are each provided with a consistent perforation for correspondingly locking on the armrest of the chair. The top end of the branch is relatively fixed and fixed; and a front and rear tooth row is arranged on one of the left and right sides of the bottom surface to correspond to the notch of the sliding member; and a button member is movably embedded in the The sliding portion of the sliding member is sandwiched between the sliding member and the fixing member, and includes: a pressing portion is protruded outside the notch for pressing; a convex portion is integrally provided on one side of the pressing portion and Extending toward the concave space of the sliding member; a front and rear tooth row is integrally disposed on the top surface of the convex key portion for forwardly correspondingly engaging or disengaging the fixing member before the rearward tooth row; and at least one elastic portion is provided a pressing force of the button member after being pressed; wherein when the fixing member is pressed against the at least one protruding hook of the sliding member to be embedded in the concave space of the sliding member, the protruding hook of the sliding member can Pressing down on the long groove of the fixing member, so that the fixing member, the sliding member and the button member can be combined into one body without being easily dispersed or peeled off; wherein when the button member is pressed into the sliding member At least one elasticity when the concave space is extended That is compressed, the row of teeth of the button member i.e. the row of teeth will be displaced away from the fixing member, the sliding member can be relatively i.e. Performing forward and backward displacement on the fixing member to synchronously adjust a forward rearward position of the armrest pad relative to the straight arm of the chair armrest; wherein when the slider is adjusted and the pressing of the button member is released, the button member is Resetting by the elastic force of the at least one elastic portion, the tooth row is also reset and re-engaged to a new position on the tooth row of the fixing member, and the sliding member cannot move forward and backward relative to the fixing member. The armrest pad 2 is positioned in a new adjusted position relative to one of the straight branches of the armrest of the chair.

1‧‧‧Adjustment mechanism module

2‧‧‧ Chair armrest

201‧‧‧ straight support

202‧‧‧arm pad

10‧‧‧Sliding parts

11‧‧‧

11a‧‧‧

12‧‧‧ recessed space

13‧‧‧Hook

14‧‧‧ bottom

15‧‧‧Long slot

16‧‧‧ gap

17‧‧‧stop ribs

18‧‧‧Spring fixed end

19‧‧‧ Gear slot

20‧‧‧Fixed parts

21‧‧‧ top surface

22‧‧‧Long groove

23‧‧‧Bump

24‧‧‧ bottom

25‧‧‧through holes

26‧‧‧ teeth row

27‧‧‧ teeth row

30‧‧‧ button pieces

31‧‧‧ Pressing Department

32‧‧‧ convex key

33‧‧‧ teeth row

34‧‧‧Flexible Department

35‧‧‧Spring fixed end

40‧‧‧Compression spring

50‧‧‧ damping gear

51‧‧‧ Gears

60‧‧‧Upper cover

1 is a schematic view showing the adjustment mechanism module of the present invention installed on a straight arm of a chair armrest.

2 is an exploded perspective view of the adjustment mechanism module of the present invention.

3 is another exploded perspective view of the adjustment mechanism module of the present invention.

4 is a perspective view showing a combination of a button member and a slider in the adjustment mechanism module of the present invention.

FIG. 5 is a perspective view showing a combination of a button member, a slider, and a fixing member in the adjustment mechanism module of the present invention.

6 is a top plan view of the adjustment mechanism module of the present invention when it is not adjusted.

7 is a top plan view of the adjustment mechanism module of the present invention during adjustment.

In order to make the present invention clearer and more detailed, the preferred embodiment and the following drawings are used to describe the structure and technical features of the present invention as follows: Referring to Figures 1-5, the adjustment mechanism module of the armrest of the present invention 1, for mounting on the top end of the straight branch 201 of the chair armrest 2, so that the armrest pad 202 of the chair armrest 2 can be adjusted by the chair armrest adjustment mechanism module 1 for forward and backward movement as shown in FIG. 7 is shown by the double arrow A. The armrest adjustment mechanism module 1 mainly includes a sliding member 10, a fixing member 20 and a button member 30.

The sliding member 10 is a front and rear elongated casing, and has front, rear, left and right circumferential wall 11 and a concave space 12 surrounded by the circumferential wall 11. The sliding member 10 The upper portion is used to assemble the armrest pad 202 that is coupled to the armrest 2 of the chair. The sliding member 10 includes: at least one inwardly projecting convex hook 13 respectively disposed on the inner surfaces of the left and right second embankment walls 11a. As in the embodiment, four convex hooks 13 are respectively disposed on the left and right sides. The inner surface of the bank 11a is not limited; the second row of straight grooves 15 are respectively disposed on the bottom surface 14 of the recessed space 12; a notch 16 is provided on the left and right walls 11a thereof. One of the banks 11a; and at least one of the blocking ribs 17 are protruded from the bottom surface 14 of the recessed space 12 and adjacent to the notch 16.

The fixing member 20 is configured to be embedded in the concave space 12 of the sliding member 10 before the sliding member 10 is smaller than the sliding member 10. The fixing member 20 comprises: two longitudinally extending grooves 22 respectively The convex hooks 13 corresponding to the sliding member 10 are provided on the left and right edges of the top surface 21 for the male hooks 13 to be pressed down and slid on the long recesses 22; the two studs 23 are respectively disposed on the same The front end 24 of the bottom surface 24 and the respective protrusions 23 can be correspondingly sleeved and slid in the rearward long groove 15 before the sliding member 10, wherein the two protrusions 23 are respectively provided with the same perforations 25 for corresponding locking. The top end of the straight arm 201 of the chair armrest 2 is relatively fixed (not shown in the locked state); and the front and rear tooth row 26 is disposed on the edge of one of the left and right sides of the bottom surface 24 thereof. Corresponding to the notch 16 of the slider 10.

The button member 30 is movably embedded in the notch 16 of the sliding member 10 and sandwiched between the sliding member 10 and the fixing member 20; the button member 30 includes: a pressing portion 31 protruding from the notch 16 is externally used for pressing; a convex key portion 32 is integrally provided on one side of the pressing portion 31 and extends toward the concave space 12 of the sliding member 10; a front and rear tooth row 33 is integrally provided on the convex key unit The top surface of the 32 is adapted to engage or disengage the front member 26 before the fixing member 20; and the at least one elastic portion 34 is configured to provide a return elastic force of the button member 30 after being pressed.

Referring to FIGS. 4-5, when the fixing member 20 is pressed against the at least one protruding hook 13 of the sliding member 10 to be embedded in the concave space 12 of the sliding member 10, the convex hook of the sliding member 10 13 can be pressed down on the long groove 22 of the fixing member 20, so that the fixing member 20, the sliding member 10 and the button member 30 are combined into a module without being easily dispersed or disengaged, thereby facilitating the module. And subsequent assembly operations.

Referring to FIGS. 6-7, when the button member 30 is pressed into the recessed space 12 of the slider 10, as shown by an arrow B in FIG. 7, the at least one elastic portion 34 is in contact with the slider. The blocking ribs 17 of the 10 are elastically deformed and compressed, and the tooth row 33 of the button member 30 is simultaneously displaced away from the tooth row 26 of the fixing member 20, and the sliding member 10 can be moved forward and backward relative to the fixing member 20. The position is as shown by the double arrow A in Fig. 7, to synchronously adjust the forward position of the armrest pad 202 relative to the straight leg 201 of the chair armrest 2.

Referring again to FIGS. 6-7, after the slider 10 is adjusted and the pressing of the button member 30 is released, the button member 30 is reset by the elastic force of the at least one elastic portion 34 as shown in FIG. As shown in C, the tooth row 33 is also reset and re-engaged in a new position on the tooth row 26 of the fixing member 20. At this time, the sliding member 10 is positioned and can no longer move forward and backward relative to the fixing member 20. The armrest pad 202 is also positioned at a new adjusted position relative to the straight leg 201 of the chair armrest 2.

Referring to FIGS. 2-7, in an embodiment of the present invention, the outer shape of the sliding member 10 is designed to be symmetrical before and after the left and right sides, so that the upper portion of the sliding member 10 is assembled and assembled. The armrest pad 202 can simultaneously include a chair armrest 2 for use on the left or right side of the seat.

Referring to FIG. 2-3, in an embodiment of the present invention, at least the button member 30 is An elastic portion 34 includes at least one obliquely extending elastic leg (34). The at least one obliquely extending elastic leg (34) is integrally formed on the pressing portion 31 and is identical to the protruding portion 32 at the pressing portion 31. On the side, and toward the concave space 12 of the sliding member 10, obliquely extending to block at least one blocking rib 17 of the sliding member 10 to form a pressing state.

Referring to FIGS. 2-3, in an embodiment of the present invention, the elastic portion 34 includes two obliquely extending elastic legs (34) and is symmetrically disposed outside the two sides of the male key portion 32.

Referring to FIG. 2-3, in an embodiment of the present invention, the front end of the convex key portion 32 of the button member 30 is further provided with a spring fixing end 35; further, the sliding member 10 is further provided with a spring fixing end 18 for Corresponding to the spring fixing end 35 of the button member 30; a compression spring 40 is further disposed between the spring fixing end 35 and the spring fixing end 18, thereby providing a reset for the button member 30 after being pressed. Respond to elasticity.

Referring to FIGS. 2-3, in an embodiment of the present invention, an anti-inside tooth row 27 is provided on the opposite side of the fixing member 20 on the opposite side of the front and rear tooth rows 26. In addition, a gear groove 19 is further disposed on the bottom surface 14 of the recessed space 12 of the sliding member 10, and a damping gear 50 is further disposed in the gear groove 19, so that the tooth row 27 of the fixing member 20 is provided. The damper-rotating gear 51 of the damper gear 50 can be correspondingly engaged to improve the stability and smoothness of the sliding member 10 when slidingly displaced relative to the fixing member 20. That is, when the slider 10 is displaced forward and backward relative to the fixing member 20, as shown by the double-headed arrow A in FIG. 7, there is a type between the damper gear 50 and the tooth row 27 provided on the fixing member 20. The moving type of the damping effect, therefore, allows the slider 10 (or the armrest pad 202) to exhibit a stable, smooth, quiet movement during the displacement process.

In addition, referring to FIG. 2-3, in an embodiment of the invention, the slider 10 Further, an upper cover 60 can be assembled and assembled on the upper side of the fixing member 20, for example, by means of a snapping or screwing manner of the protruding end and the screw hole, but the armrest pad 202 of the chair armrest 2 can be covered. The assembly is bonded to the upper cover 60.

It can be seen from the above that the adjustment mechanism module 1 of the armrest of the chair of the present invention is simple in structure, has a small number of components and is easy to manufacture (for example, using a plastic injection molding process to manufacture an integrally formed body), and the assembly work is relatively simplified and more It is conducive to handling, transportation and subsequent assembly process, achieving modularization and mass production, so it is novel and progressive compared with conventional technology.

The above is only the preferred embodiments of the present invention, and is intended to be illustrative, and not restrictive, and it is understood by those of ordinary skill in the art that Many changes, modifications, and even equivalents may be made without departing from the scope of the invention.

1‧‧‧Adjustment mechanism module

202‧‧‧arm pad

10‧‧‧Sliding parts

11‧‧‧

11a‧‧‧

12‧‧‧ recessed space

13‧‧‧Hook

14‧‧‧ bottom

15‧‧‧Long slot

16‧‧‧ gap

17‧‧‧stop ribs

18‧‧‧Spring fixed end

19‧‧‧ Gear slot

20‧‧‧Fixed parts

21‧‧‧ top surface

22‧‧‧Long groove

24‧‧‧ bottom

25‧‧‧through holes

26‧‧‧ teeth row

30‧‧‧ button pieces

31‧‧‧ Pressing Department

33‧‧‧ teeth row

34‧‧‧Flexible Department

35‧‧‧Spring fixed end

40‧‧‧Compression spring

60‧‧‧Upper cover

Claims (9)

An adjustment mechanism module for a chair armrest for mounting on a top end of a straight armrest of a chair armrest for adjusting the armrest pad of the armrest of the chair for forward and backward movement, comprising: a sliding member, which is longitudinally elongated The housing has a circumferential wall and a concave space surrounded by the circumferential wall. The upper part of the housing is assembled with the armrest pad of the chair armrest, and comprises: at least one protruding hook protruding toward the concave space respectively It is arranged on the inner surface of the left and right dike walls; the rearward long troughs are respectively arranged on the bottom surface of the concave space before the two rows are straight; a notch is provided on one of the left and right dike walls And at least one blocking rib protruding from the bottom surface of the concave space and adjacent to the notch; a fixing member, the length of which is smaller than the sliding member, and the rearward elongated piece is buried in the sliding member In the concave space, the second forward and backward long grooves are respectively disposed on the left and right edges of the top surface thereof to correspond to the convex hooks of the sliding member, and the convex hooks can be pressed downward and slide on the long grooves. The two protruding columns are respectively disposed on the back side of the bottom surface and the respective protruding columns can be respectively sleeved and Moving forwardly in the long groove before the sliding member, wherein the two protrusions are respectively provided with corresponding perforations for correspondingly locking on the top end of the straight arm of the armrest of the chair to relatively maintain no movement; and a front-to-back first tooth a notch disposed on one of the bottom surfaces thereof to correspond to the notch of the sliding member; and a button member movably embedded on the notch of the sliding member and sandwiched between the sliding member and the fixing member The method includes: a pressing portion is exposed outside the notch for pressing; a convex key portion is integrally disposed on one side of the pressing portion and extends toward the concave space of the sliding member; The top surface of the convex key portion is disposed to be backwardly coupled to the first tooth row before being correspondingly engaged or separated from the fixing member; and the at least one elastic portion is configured to provide an elastic restoring force of the button member after being pressed; wherein When the fixing member is pressed against the at least one protruding hook of the sliding member to be embedded in the concave space of the sliding member, the protruding hook of the sliding member can be pressed downward against the long groove of the fixing member. So that the fixing member, the sliding member and the button member can be combined into one body without being easily separated and separated; wherein when the button member is pressed and protrudes into the concave space of the sliding member, the at least one elastic portion is Compressed and deformed, the second tooth row of the button member is displaced away from the first tooth row of the fixing member, and the sliding member can be moved forward and backward relative to the fixing member to synchronously adjust the armrest pad relative to the The front armrest position of the straight armrest of the chair armrest; wherein when the slider is adjusted to a new position after adjustment and the pressing of the button member is released, the button member is reset by the elastic restoring force of the at least one elastic portion The second tooth row of the button member is also reset and re-engaged in a new position on the first tooth row of the fixing member. At this time, the sliding member cannot move forward and backward relative to the fixing member, and the armrest pad is Set to the new position after the adjustment. The adjustment mechanism module of the armrest of the chair of claim 1, wherein the outer shape of the sliding member is formed as a left and right symmetrical front and rear elongated housing, so that the armrest pad assembled above the sliding member can be It also includes the armrests for the left or right side of the seat. The adjustment mechanism module of the armrest of the chair of claim 1, wherein at least one elastic portion of the button member comprises at least one obliquely extending elastic leg, and the at least one obliquely extending elastic leg is integrally disposed on the pressing portion. And the convex key portion is on the same side of the pressing portion, and extends obliquely toward the concave space of the sliding member to block on at least one stopping rib of the sliding member to form a pressing state. The adjustment mechanism module of the armrest of the chair of claim 3, wherein the at least one elastic portion comprises two obliquely extending elastic legs and symmetrically disposed outside the two sides of the convex key portion. The adjustment mechanism module of the armrest of the chair as claimed in claim 4 Where the button is Convex key The head end is further provided with a first spring fixed end. The adjustment mechanism module of the armrest of the chair of claim 5, wherein the sliding member is further provided with a second spring fixing end corresponding to the first spring fixing end of the button member, and further provided with a compression spring positioned on the button a first spring fixed end of the piece and a second spring fixed end of the sliding member Between, to provide the return elastic force of the button member after being pressed. The adjustment mechanism module of the armrest of the chair of claim 1, wherein a third tooth row facing the concave space is disposed on an edge of the fixing member opposite to the opposite side of the first tooth row. The adjustment mechanism module of the armrest of the chair of claim 7, wherein a bottom surface of the concave space of the sliding member is further provided with a gear groove, and further a damping gear is embedded in the gear groove to fix the fixing The third tooth row provided by the piece can be correspondingly engaged with the damperable gear of the damper gear. The adjustment mechanism module of the armrest of the chair of claim 1, wherein the upper part of the sliding member is further assembled with an upper cover, so that the armrest pad of the chair armrest is assembled and assembled on the upper cover.