CN218978427U - Arm supporting device of seat - Google Patents

Abstract

The utility model discloses a chair arm supporting device, which comprises a longitudinal supporting rod and a transverse armrest body; the bottom end of the armrest body is provided with a rotary inclined shaft, the top end of the supporting rod is provided with an upper supporting arm which is obliquely arranged forwards and upwards, and the rotary inclined shaft is rotationally connected to the upper supporting arm; the armrest body can circumferentially rotate around the supporting rod through the rotating inclined shaft; the armrest body is provided with a free end which is close to the root end of the rotary inclined shaft and far away from the rotary inclined shaft; the thickness of the rotary inclined shaft is gradually reduced along the direction from the free end of the armrest body to the root end of the armrest body; the rotating inclined shaft is configured such that when the free end of the armrest body rotates forwards relative to the support rod, the free end of the armrest body will simultaneously tilt upwards; the handrail body forms a supporting inclined plane with high front and low rear, which is convenient for a user to read or operate by hand.

Description

Arm supporting device of seat

Technical Field

The utility model relates to the field of seats, in particular to a seat arm supporting device.

Background

In order to improve the comfort of the seat, the existing seat is generally provided with armrests so as to support the arms of a user and improve the riding comfort. Generally, existing armrests of seats are largely divided into stationary armrests and movable armrests, wherein the movable armrests are capable of adjusting the position of the armrests relative to the seat, thereby completing the folding and unfolding actions. However, most existing movable armrests are limited to only horizontal movement, and the armrests can be rotated in place or adjusted to move back and forth. However, for some users who frequently play a game or like to read in a seat, the users sit in the seat for a long time to perform a game operation or read a book, and the users need to have their hands inclined all the time to perform a game operation in front of the chest; most armrests in the prior art obviously cannot effectively support the user's elbow, so that the elbow is in a suspended state; the patients feel ache and tired easily after a long time; this makes it more desirable for the armrests to be able to tilt to provide effective support to the user's arms and elbows for different angles and different handhabits.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide the arm supporting device of the seat, wherein the armrest body is in rotary fit with the upper support arm through the rotary inclined shaft at the bottom end; so that the free end of the armrest body can be tilted upwards simultaneously in the forward rotation process of the free end of the armrest body relative to the supporting rod; the handrail body forms a supporting inclined plane with high front and low rear, which is convenient for a user to read or operate by hand.

The technical scheme of the utility model is realized as follows:

a chair arm supporting device comprises a longitudinal supporting rod and a transverse armrest body; the bottom end of the armrest body is provided with a rotary inclined shaft, the top end of the supporting rod is provided with an upper supporting arm which is obliquely arranged forwards and upwards, and the rotary inclined shaft is rotationally connected to the upper supporting arm; the armrest body can circumferentially rotate around the supporting rod through the rotating inclined shaft; the armrest body is provided with a free end which is close to the root end of the rotary inclined shaft and far away from the rotary inclined shaft; the thickness of the rotary inclined shaft is gradually reduced along the direction from the free end of the armrest body to the root end of the armrest body; and the rotating inclined shaft is configured such that when the free end of the armrest body rotates forward relative to the strut, the free end of the armrest body will simultaneously tilt upward.

Preferably, the top end of the rotary inclined shaft is in rotary connection with the armrest body through a horizontal rotary shaft, and the length direction of the rotary shaft is consistent with the width direction of the armrest body; a torsion piece is arranged between the rotating inclined shaft and the armrest body and is connected to the rotating shaft; the free end of the armrest body rotates up and down relative to the rotating inclined shaft to act on the elastic bending deformation of the torsion piece, and the torsion piece correspondingly provides the torsion for resetting the armrest body. The free end of the armrest body can also elastically press downwards in the longitudinal direction relative to the rotating inclined shaft, so that the arm can be moved, and the armrest functionality is increased.

Preferably, the bottom end of the armrest body is concavely provided with a mounting groove; the top end of the rotary inclined shaft is provided with connecting convex blocks which are respectively positioned at two sides and extend upwards; rotation grooves matched with the connection convex blocks are correspondingly arranged on two sides of the inside of the mounting groove; the rotating inclined shaft is embedded into the mounting groove in the axial direction so that the connecting protruding block is in running fit in the rotating groove, and the rotating shaft sequentially penetrates through the handrail body and the connecting protruding block in the horizontal direction. The rotary structure is stable, and the rotary inclined shaft is embedded in the mounting groove, so that the connecting trace can be hidden, and the structure is simple and attractive.

Preferably, the torsion member has a bilateral symmetry structure, and comprises two torsion springs connected together side by side, and the two torsion springs are sleeved on the rotating shaft; each torsion spring comprises a front torsion arm extending forwards and a rear torsion arm extending backwards; the front torsion arms at the front ends of the two torsion springs are connected together to form a U-shaped structure; screws are correspondingly arranged on the rotary inclined shafts, and the two front torsion arms are sleeved on the screws; the rear torsion arm is propped against the upper wall of the mounting groove. Then when the armrest body rotates longitudinally, the torsion piece can provide enough elasticity, so that the armrest body can rebound automatically after being pressed down.

Preferably, the end part of the upper support arm is provided with a rotary positioning seat which is in rotary fit with the rotary inclined shaft; positioning grooves which are distributed at intervals are arranged on the rotary positioning seat along the circumferential direction; the bottom end of the rotating inclined shaft is provided with an elastic clamping bead which protrudes downwards and can elastically stretch out and draw back; the elastic clamping beads can be clamped with the positioning grooves. The armrest body has obvious gear feel during rotation adjustment.

Preferably, a rotary column which is arranged in the rotary inclined shaft in a penetrating way in an upward rotating way is arranged at the center of the rotary positioning seat; the top end of the rotary inclined shaft is provided with a hollowed groove, and the hollowed groove penetrates through the bottom end of the rotary inclined shaft; an upper limiting plate which is clamped and fixedly connected with the rotary positioning seat is arranged in the hollowed-out groove. So that the rotating inclined shaft cannot be separated from the rotating positioning seat.

Preferably, a circle of annular rotating guide groove is further arranged at the center of the rotating positioning seat, and an arc-shaped limiting block protruding downwards is correspondingly arranged at the bottom end of the rotating inclined shaft; the arc-shaped limiting block is rotationally matched in the rotary guide groove. Further stabilizing the rotating structure.

Preferably, a sinking groove is arranged at the end part of the upper support arm, and the rotary positioning seat is embedded and arranged in the sinking groove. So that the processing is more convenient.

Preferably, a rotary fit inclined plane is formed between the rotary inclined shaft and the upper support arm. Thus, the armrest body can also change in height and tilting when rotating.

The design starting point, the idea and the beneficial effects of the utility model adopting the technical scheme are as follows:

under the action of the rotary inclined shaft, when the armrest rotates forwards relative to the support rod to enable the free end of the armrest body to move forwards, the free end of the armrest body can tilt upwards at the same time, so that the armrest body forms a supporting inclined plane with high front and low back, a user can conveniently read or walk by hand, and the arm can be held on the armrest in an inclined mode; avoiding fatigue caused by suspending arms. In addition, the armrest body is also rotationally connected with the top end of the rotary inclined shaft, so that the free end of the armrest body can also elastically press downwards and automatically elastically return relative to the rotary inclined shaft, and after the arm of a user is placed on the armrest, the free end of the armrest body can further act on the armrest body to rotate up and down, and the arm can be moved; the arm pain of the armrest is avoided when the armrest is used for a long time, and the using interestingness is increased; the handrail body has rich functions.

Drawings

FIG. 1 is a schematic perspective view of an armrest according to an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of the armrest body rotated forward around the strut in an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of the armrest body mated with a rotating diagonal shaft in an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of the armrest body and the rotating inclined shaft in an embodiment of the present utility model;

FIG. 5 is a schematic perspective view of the connection of the armrest body and the rotary inclined shaft in an embodiment of the present utility model;

FIG. 6 is a schematic perspective view of the upper arm in an embodiment of the utility model in butt joint with a rotating tilt shaft;

FIG. 7 is a schematic perspective view showing a limiting connection between a rotary positioning seat and a rotary inclined shaft in an embodiment of the present utility model;

FIG. 8 is a schematic perspective view showing the connection of the rotating positioning seat and the upper arm in the embodiment of the present utility model;

FIG. 9 is a schematic perspective view of the rotary inclined shaft and the rotary positioning seat according to the embodiment of the utility model;

fig. 10 is a schematic perspective view of the armrest body rotated forward around the strut to another angle in an embodiment of the present utility model.

The reference numerals are as follows: a strut 1; a handrail body 2; a free end A; root end B; rotating the inclined shaft 3; a mounting groove 4; a rotating shaft 5; a torsion member 6; a connection bump 7; rotating the positioning seat 8; a rotating column 9; a hollow groove 10; an upper limit plate 11; an upper arm 12; the rotating groove 13; front torsion arm 14; rear torsion arm 15; a screw 16; a sink 18; a positioning groove 19; an elastic clamping bead 20; a rotating guide groove 21; an arcuate stop 22.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, the term "at least one" refers to one or more, unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific embodiments of the present utility model are as follows:

as shown in fig. 1 to 10, the present utility model provides a chair arm supporting apparatus, comprising a longitudinal strut 1 and a handrail body 2 connected to the upper end of the strut 1 in a transverse direction; a rotary inclined shaft 3 is arranged at the bottom end of the armrest body 2; the top end of the supporting rod 1 is provided with an upper supporting arm 12 which is obliquely arranged forwards and upwards, and the rotary inclined shaft 3 is rotatably connected to the upper supporting arm 12; the armrest body 2 can rotate around the support rod 1 in the circumferential direction through the rotating inclined shaft 3; and the armrest body 2 is provided with a root end B close to the rotary inclined shaft 3 and a free end A far away from the rotary inclined shaft; the thickness of the rotary inclined shaft 3 gradually decreases along the direction from the free end A of the armrest body 2 to the root end B thereof, that is, a rotary matched inclined plane is formed between the bottom surface of the rotary inclined shaft 3 and the upper support arm 12, and the inclined plane is higher at the front and lower at the rear; and the rotating inclined shaft 3 is configured such that when the free end a of the armrest body 2 rotates forward with respect to the strut 1, the free end a of the armrest body 2 will simultaneously tilt upward. Therefore, when a user needs to read on the seat or perform a hand-tour operation, the armrest body 2 only needs to be rotated forwards, so that the free end A of the armrest body is tilted upwards, and then the armrest body 2 can effectively support the arm of the user, and the arm is prevented from being suspended.

As shown in fig. 6-9, the rotary inclined shaft 3 has a cylindrical structure, and the rotary inclined shaft 3 is rotatably matched with the upper support arm 12, specifically: the end of the upper arm 12 is shown to be concavely provided with a sink 18, and a rotary positioning seat 8 is embedded and mounted in the sink 18. A rotary column 9 protruding upwards is arranged at the central position of the rotary positioning seat 8, and the rotary column 9 is arranged in the rotary inclined shaft 3 in a penetrating way in an upward rotating way; the upper end of the rotary inclined shaft 3 is provided with a hollow groove 10, and the hollow groove 10 penetrates through the bottom end of the rotary inclined shaft 3; the hollow groove 10 is internally provided with an upper limit plate 11 which is clamped and fixedly connected with the rotary column 9, so that the rotary inclined shaft 3 cannot be separated from the rotary positioning seat 8, and the rotary inclined shaft 3 can rotate relative to the rotary positioning seat 8. In addition, positioning grooves 19 are arranged at intervals on the rotary positioning seat 8 along the circumferential direction of the rotary column 9; an elastic clamping bead 20 which protrudes downwards and can elastically stretch out and draw back is arranged at the bottom end of the rotating inclined shaft 3; the elastic clamping beads 20 can be clamped with the positioning grooves 19; thereby the armrest body 2 has obvious gear feel during rotation adjustment. A circle of annular rotary guide groove 21 is also arranged at the center of the rotary positioning seat 8, and an arc-shaped limiting block 22 protruding downwards is correspondingly arranged at the bottom end of the rotary inclined shaft 3; the arc-shaped limiting block 22 is rotatably matched in the rotary guide groove 21, so that the rotary structure can be further stabilized, and the rotation of the armrest body 2 is limited.

As shown in fig. 3-5, a mounting groove 4 is also arranged at the bottom end of the armrest body 2; the top end of the rotary inclined shaft 3 is embedded in the mounting groove 4, and the rotary inclined shaft 3 is in rotary connection with the armrest body 2 through a rotary shaft 5; the length direction of the rotating shaft 5 is consistent with the width direction of the armrest body 2. The rotating inclined shaft 3 is connected to the bottom end of the armrest body 2 at the root end B thereof, so that the free end a of the armrest body 2 can rotate up and down relative to the rotating inclined shaft 3. In addition, a torsion piece 6 is arranged between the rotating inclined shaft 3 and the armrest body 2, and when the free end A of the armrest body 2 rotates downwards relative to the support rod 1, the torsion piece 6 deforms and provides torsion for resetting the armrest body 2; therefore, the free end A of the armrest body 2 can also be elastically pressed down and automatically elastically returned, so that the free end A of the armrest body 2 can further act on the arm of a user to rotate up and down after the arm of the user is placed on the armrest, and the arm can be moved; the arm pain of the armrest is avoided when the armrest is used for a long time, and the using interestingness is increased.

Specifically: the top end of the rotary inclined shaft 3 is provided with connecting convex blocks 7 which are respectively positioned at the left side and the right side and extend upwards, two sides of the inside of the mounting groove 4 are correspondingly provided with rotating grooves 13 matched with the connecting convex blocks 7, when the rotating inclined shaft 3 is matched with the connecting convex blocks, the rotating inclined shaft 3 is embedded into the mounting groove 4 upwards, the connecting convex blocks 7 are in rotating fit in the rotating grooves 13, then the rotating shaft 5 sequentially penetrates through the handrail body 2 and the connecting convex blocks 7 along the horizontal direction, so that the handrail body 2 is in rotating connection with the rotary inclined shaft 3, and the rotating structure is stable; and the rotary inclined shaft 3 is embedded in the mounting groove 4, so that the connecting trace can be hidden, and the structure is simple and attractive.

As shown in fig. 3-5, the torsion member 6 is arranged on the rotating shaft 5, the torsion member 6 is in a bilateral symmetry structure, the torsion member 6 comprises two torsion springs connected together side by side, and the two torsion springs are sleeved on the rotating shaft 5; and each torsion spring includes a front torsion arm 14 extending forwardly and a rear torsion arm 15 extending rearwardly; and the front torsion arms 14 at the front ends of the two torsion springs are connected together to form a U-shaped structure; screws 16 for connection to the front torsion arms 14 are provided on the rotary oblique shafts 3; the two front torsion arms 14 can just be sleeved on the screw 16. And the rear torsion arm 15 abuts against the upper wall of the mounting groove 4. Then, as shown in fig. 3, when the free end of the armrest body 2 rotates downward relative to the rotating inclined shaft 3, the torsion member 6 will correspondingly deform in torsion to provide torsion for resetting the armrest body 2; so that the armrest body 2 can be elastically pressed down against the support body 1. In addition, the rotating inclined shaft 3 is in rotating fit with the upper support arm 12, so that the armrest body 2 can be rotated and adjusted relative to the support rod 1 under the action of the rotating inclined shaft 3; the handrail body 2 has more abundant functions and ingenious structural design.

Then, as shown in fig. 1, 2 and 10, under the action of the rotating inclined shaft 3, when the armrest body 2 rotates forwards relative to the supporting rod 1 to enable the free end A of the armrest body 2 to move forwards, the free end A of the armrest body 2 can tilt upwards at the same time, so that the armrest body 2 forms a supporting inclined plane with high front and low back, a user can conveniently read or walk by hand, and the arm can keep inclined and supported on the armrest.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims (9)

1. A chair arm support device, characterized in that: comprises a longitudinal strut and a transverse armrest body; the bottom end of the armrest body is provided with a rotary inclined shaft, the top end of the supporting rod is provided with an upper supporting arm which is obliquely arranged forwards and upwards, and the rotary inclined shaft is rotationally connected to the upper supporting arm; the armrest body can circumferentially rotate around the supporting rod through the rotating inclined shaft; the armrest body is provided with a free end which is close to the root end of the rotary inclined shaft and far away from the rotary inclined shaft; the thickness of the rotary inclined shaft is gradually reduced along the direction from the free end of the armrest body to the root end of the armrest body; and the rotating inclined shaft is configured such that when the free end of the armrest body rotates forward relative to the strut, the free end of the armrest body will simultaneously tilt upward.

2. The chair arm support apparatus of claim 1 wherein: the top end of the rotary inclined shaft is in rotary connection with the armrest body through a horizontal rotary shaft, and the length direction of the rotary shaft is consistent with the width direction of the armrest body; a torsion piece is arranged between the rotating inclined shaft and the armrest body and is connected to the rotating shaft; the free end of the armrest body rotates up and down relative to the rotating inclined shaft to act on the elastic bending deformation of the torsion piece, and the torsion piece correspondingly provides the torsion for resetting the armrest body.

3. The chair arm support apparatus of claim 2 wherein: a mounting groove is concavely formed in the bottom end of the armrest body; the top end of the rotary inclined shaft is provided with connecting convex blocks which are respectively positioned at two sides and extend upwards; rotation grooves matched with the connection convex blocks are correspondingly arranged on two sides of the inside of the mounting groove; the rotating inclined shaft is embedded into the mounting groove in the axial direction so that the connecting protruding block is in running fit in the rotating groove, and the rotating shaft sequentially penetrates through the handrail body and the connecting protruding block in the horizontal direction.

4. The chair arm support apparatus of claim 2 wherein: the torsion piece is of a bilateral symmetry structure and comprises two torsion springs which are connected together side by side, and the two torsion springs are sleeved on the rotating shaft; each torsion spring comprises a front torsion arm extending forwards and a rear torsion arm extending backwards; the front torsion arms at the front ends of the two torsion springs are connected together to form a U-shaped structure; screws are correspondingly arranged on the rotary inclined shafts, and the two front torsion arms are sleeved on the screws; the rear torsion arm is propped against the upper wall of the mounting groove.

5. The chair arm support apparatus of claim 1 wherein: the end part of the upper support arm is provided with a rotary positioning seat which is in rotary fit with the rotary inclined shaft; positioning grooves which are distributed at intervals are arranged on the rotary positioning seat along the circumferential direction; the bottom end of the rotating inclined shaft is provided with an elastic clamping bead which protrudes downwards and can elastically stretch out and draw back; the elastic clamping beads can be clamped with the positioning grooves.

6. The chair arm support apparatus of claim 5, wherein: a rotary column which is arranged in the rotary inclined shaft in a penetrating way in an upward rotating way is arranged at the center of the rotary positioning seat; the top end of the rotary inclined shaft is provided with a hollowed groove, and the hollowed groove penetrates through the bottom end of the rotary inclined shaft; an upper limiting plate which is clamped and fixedly connected with the rotary positioning seat is arranged in the hollowed-out groove.

7. The chair arm support apparatus of claim 5, wherein: the center of the rotary positioning seat is also provided with a circle of annular rotary guide groove, and the bottom end of the rotary inclined shaft is correspondingly provided with an arc-shaped limiting block protruding downwards; the arc-shaped limiting block is rotationally matched in the rotary guide groove.

8. The chair arm support apparatus of claim 5, wherein: the end part of the upper support arm is provided with a sinking groove, and the rotary positioning seat is embedded and arranged in the sinking groove.

9. The chair arm support apparatus of claim 1 wherein: and a rotary matched inclined plane is formed between the rotary inclined shaft and the upper support arm.

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