TWI858937B - Armrest structure of chair - Google Patents

Abstract

The present invention relates to a armrest structure of a chair, primarily consisting of an armrest bracket, a rotating base pivotally connected to the armrest bracket, a sliding base pivotally provided on the rotating base and an armrest cover provided on the sliding base. By the pivotal connection of the sliding base to the rotating base, the armrest can be properly adjusted in a rotation angle and at a front-to-back position according to a user's arm posture, as well as the sliding base deflecting inwards or outwards along with the action of the rotating base can be aligned with the armrest cover, so that the sliding base and the armrest cover can be set forward or backward to meet ergonomic requirements and improve the seating comfort of the chair.

Description

Chair armrest structure

The present invention relates to the field of chair technology, and in particular to a chair armrest structure.

Generally, chairs are equipped with armrests for users to place their arms on, which improves the comfort of the chair. Most existing chair armrests are fixed, and some are equipped with adjustable height structures to adjust the height of the user.

Although the height-adjustable armrest can be adjusted according to the user's height, when the user is sitting on the chair, his or her arms will be in different positions due to different activities such as reading newspapers, using the computer or doing paperwork. However, the height-adjustable armrest cannot make necessary adjustments such as the front and back position and angle according to the different arm positions of the user, so it still cannot provide the user with a comfortable arm support.

Therefore, the inventor, in view of the above-mentioned deficiencies in the use and implementation of the existing chair armrests, has developed this invention with the assistance of his many years of manufacturing and design experience and knowledge in related fields and through various ingenuity.

The present invention relates to a chair armrest structure, the main purpose of which is to provide a chair armrest structure that can adjust the angle and front and back position according to the user's arm posture.

In order to achieve the above-mentioned implementation purpose, the inventors have developed the following chair armrest structure, which includes: an armrest bracket, wherein a set seat is provided at the upper end of the armrest bracket, and a first locking hole and a second locking hole are provided on the set seat, and a first positioning portion is provided on the set seat of the armrest bracket; a rotating seat, wherein the rotating seat is arranged above the set seat of the armrest bracket, and a third locking hole and a first pivot hole are provided on the rotating seat, and an arc-shaped limiting hole is provided between the third locking hole and the first pivot hole of the rotating seat, and The arc-shaped limiting hole is made to correspond to the first locking hole position of the armrest bracket and its assembly seat, and a limiting piece is provided to penetrate the arc-shaped limiting hole and be locked and combined with the first locking hole. The first pivot hole is made to correspond to the second locking hole position of the armrest bracket and its assembly seat, and a first pivot piece is provided to penetrate the first pivot hole and be locked and combined with the second locking hole. A second positioning part is provided on the bottom surface of the rotating seat to correspond to the first positioning part of the armrest bracket and its assembly seat for locking and positioning; a first cover plate is provided to make the first pivot hole correspond to the second locking hole position of the armrest bracket and its assembly seat, and a second pivot piece is provided to penetrate the first pivot hole and be locked and combined with the second locking hole. A cover plate covers the upper end of the rotating seat and is combined with the rotating seat. A limiting groove is provided on the first cover plate, and a through hole is provided at the bottom of the limiting groove to correspond to the position of the third lock hole of the rotating seat; a sliding seat is arranged above the first cover plate, and a sliding groove is provided on the sliding seat, and a long slot hole is formed at the bottom of the sliding groove along the length of the sliding seat; a fixing member is arranged in the sliding groove of the sliding seat, and a limiting block is provided on the bottom surface of the fixing member. The limit block is penetrated through the long slot hole of the sliding seat and arranged in the limit slot of the first cover plate. A second pivot hole is provided on the fixing member to correspond to the through hole position of the limit slot of the first cover plate. A second pivot member is provided to penetrate the second pivot hole and the through hole of the first cover plate in sequence and lock and combine with the third lock hole of the rotating seat; An armrest cover is formed with a covering space on the bottom surface of the armrest cover, and the fixing member and the sliding seat cover are arranged in the covering space, and the armrest cover is combined with the sliding seat.

The armrest structure of the chair as described above, wherein the first positioning portion of the assembly seat of the armrest bracket includes a groove, and an elastic member and a positioning member are sequentially arranged in the groove, and the second positioning portion of the rotating seat includes a plurality of positioning pits arranged in an arc shape, so as to correspond to the positioning member of the first positioning portion of the assembly seat of the armrest bracket for locking and positioning.

In the armrest structure of the chair as described above, the limiting groove of the first cover plate is provided with a third positioning portion at the bottom of the groove, and the limiting block of the fixing member is provided with a sixth positioning portion on the bottom surface to correspond to the third positioning portion provided in the limiting groove of the first cover plate for locking and positioning.

The armrest structure of the chair as described above, wherein the third positioning portion of the limiting groove of the first cover plate includes a number of positioning pits arranged in an arc shape, and the sixth positioning portion of the limiting block of the fixing member includes a receiving groove, and an elastic member and a positioning member are sequentially arranged in the receiving groove, and the positioning member is locked and positioned correspondingly with the number of positioning pits provided in the third positioning portion of the limiting groove of the first cover plate.

In the armrest structure of the chair as described above, the sliding seat is formed with a fourth positioning portion on each of the two side groove walls of the sliding groove, and the fixing member is formed with a fifth positioning portion on each of its two sides to respectively engage with the fourth positioning portions of the two side groove walls of the sliding seat for locking and positioning.

In the armrest structure of the chair as described above, the fourth positioning part provided on the groove walls on both sides of the sliding groove of the sliding seat is a row of wave-shaped grooves provided along the length of the sliding seat, and the fifth positioning part provided on both sides of the fixing part is a locking flange, which is respectively locked and positioned correspondingly with the wave-shaped grooves provided on the fourth positioning part of the groove walls on both sides of the sliding groove of the sliding seat.

The chair armrest structure as described above, wherein the chair armrest structure further comprises a second cover plate, the second cover plate is correspondingly covered on the first cover plate and combined with the first cover plate, and a hollow hole is provided on the second cover plate, the hollow hole corresponds to the shape and position of the limiting groove of the first cover plate, the sliding seat is arranged above the second cover plate, and the limiting block of the fixing member is arranged in the limiting groove of the first cover plate through the hollow hole of the second cover plate.

Thus, the armrest structure of the chair of the present invention utilizes the setting of the sliding seat and the rotating seat, so that the armrest of the present invention can be adjusted in rotation angle and front and rear position according to the user's arm posture, and through the hinge design of the sliding seat and the rotating seat, the sliding seat and the armrest cover that are deflected inward or outward along with the rotating seat can be placed straight, so that the sliding seat and the armrest cover are set forward and backward to meet the needs of ergonomics and improve the sitting comfort of the chair.

1: Handrail bracket

11: Assembly seat

12: First keyhole

13: Second keyhole

14: First positioning part

141: Container

142: Elastic parts

143: Positioning piece

2: Rotating seat

21: Third keyhole

22: First hinge

23: Arc-shaped limit hole

24: Limiting parts

25: First joint

26: Second positioning part

3: First cover plate

31: Limiting slot

32: The third positioning part

33: Through hole

4: Second cover plate

41: Hollow hole

5: Sliding seat

51: Chute

52: Long slot hole

53: Fourth positioning part

6: Fixing parts

61: Fifth positioning part

62: Limit block

63: Sixth positioning unit

631: Storage tank

632: Elastic parts

633: Positioning piece

64: Second hinge

65: Second hinged part

7: Handrail cover

71: Covering space

Figure 1: 3D exploded view of the present invention

Figure 2: Front cross-sectional view of the present invention

Figure 3: Another front cross-sectional view of the present invention

Figure 4: Top view of the present invention

Figure 5: A three-dimensional diagram of the appearance of the present invention

Figure 6: Front view of the appearance of the present invention

Figure 7: Top view of the present invention in use (I)

Figure 8: Top view of the present invention in use (II)

Figure 9: Top view of the present invention in use (III)

In order to make the technical means of the present invention and the effects that can be achieved more completely and clearly disclosed, the following is a detailed description. Please refer to the disclosed drawings and drawing numbers: First, please refer to the first to fourth figures, which are the armrest structure of the chair of the present invention, which mainly includes: an armrest bracket (1), wherein a stand (11) is provided at the upper end of the armrest bracket (1), and a first lock hole (12) and a second lock hole (13) are provided on the stand (11) opposite to each other at the front and rear, and a first positioning portion (14) is provided between the first lock hole (12) and the second lock hole (13), and the first The positioning portion (14) comprises a receiving groove (141), and an elastic member (142) and a spherical positioning member (143) are sequentially arranged in the receiving groove (141); a rotating seat (2), wherein the rotating seat (2) is arranged above the assembly seat (11) of the armrest bracket (1), and a third locking hole (21) and a first pivot hole (22) are arranged opposite to each other in the front and rear of the rotating seat (2); and an arc-shaped limiting hole (23) is arranged between the third locking hole (21) and the first pivot hole (22), and the arc-shaped limiting hole (23) and the first pivot hole (22) of the assembly seat (11) of the armrest bracket (1) are aligned with each other. A locking hole (12) is corresponding to the position of the first locking hole (12), and a limiting member (24) is provided to penetrate the arc limiting hole (23) and be locked and combined with the first locking hole (12). The first pivot hole (22) corresponds to the position of the second locking hole (13) of the assembly seat (11) of the handrail bracket (1). A first pivot member (25) is provided to penetrate the first pivot hole (22) and be locked and combined with the second locking hole (13). A second positioning portion (26) is provided on the bottom surface of the rotating seat (2). The second positioning portion (26) includes a plurality of positioning pits arranged in an arc shape to be aligned with the assembly seat (11) of the handrail bracket (1). The spherical positioning member (143) of the first positioning portion provided on the upper surface corresponds to the latch positioning; a first cover plate (3), so that the first cover plate (3) corresponds to the upper end of the rotating seat (2) and is combined with the rotating seat (2), and a limiting groove (31) is provided on the top surface of the first cover plate (3), and the shape of the limiting groove (31) is generally formed by connecting two front and rear opposite sectors, and a third positioning portion (32) is provided at the bottom of the limiting groove (31), and the third positioning portion (32) includes a plurality of positioning pits arranged in an arc shape, and a through hole (33) is provided at the bottom of the limiting groove (31) to engage with the third locking portion of the rotating seat (2). The second cover plate (4) is configured to cover the first cover plate (3) and is combined with the first cover plate (3). The second cover plate (4) is provided with a hollow hole (41), and the hollow hole (41) corresponds to the position of the limiting groove (31) of the first cover plate (3). A sliding seat (5) is configured to be arranged above the second cover plate (4), and a rectangular sliding groove (51) is provided on the sliding seat (5) and is arranged in a forward and backward direction. A long sliding groove (51) is formed at the bottom of the sliding groove (51) and is arranged along the length of the sliding seat (5). A slot hole (52) is formed on the left and right side walls of the slide slot (51), and a row of fourth positioning parts (53) are formed along the length of the slide seat (5) and are in the form of a wave-shaped groove; a fixing member (6) is arranged in the slide slot (51) of the slide seat (5), and a fifth positioning part (61) is formed on the left and right sides of the fixing member (6) as a clamping convex edge to correspond to the fourth positioning parts (53) of the wave-shaped groove provided on the two side walls of the slide slot (51) of the slide seat (5) for clamping and positioning, and a limiting block (62) is provided on the bottom surface of the fixing member (6), and the limiting block (62) is provided. ) is located in the long slot hole (52) of the sliding seat (5), and passes through the hollow hole (41) of the second cover plate (4) and is set in the limiting groove (31) of the first cover plate (3). In addition, a sixth positioning portion (63) is provided on the bottom surface of the limiting block (62). The sixth positioning portion (63) includes a receiving groove (631), and an elastic member (632) and a spherical positioning member (633) are sequentially arranged in the receiving groove (631). The spherical positioning member (633) is correspondingly locked with a number of positioning recesses of the third positioning portion (32) provided at the limiting groove (31) of the first cover plate (3). The fixing member (631) is provided with a sixth positioning portion (63) on the bottom surface of the limiting block (62). The sixth positioning portion (63) includes a receiving groove (631), and an elastic member (632) and a spherical positioning member (633) are sequentially arranged in the receiving groove (631). The spherical positioning member (633) is locked with a number of positioning recesses of the third positioning portion (32) provided at the limiting groove (31) of the first cover plate (3). ) is provided with a second pivot hole (64) at the front side thereof to correspond to the position of the through hole (33) of the limiting groove (31) of the first cover plate (3), and a second pivot member (65) is provided to penetrate the second pivot hole (64), the hollow hole (41) of the second cover plate (4) and the through hole (33) of the first cover plate (3) in sequence, and to be locked and combined with the third locking hole (21) provided at the front side of the rotating seat (2); an armrest cover (7), wherein a covering space (71) is formed on the bottom surface of the armrest cover (7), and the fixing member (6) and the sliding seat (5) are covered therein, and the armrest cover (7) is combined with the sliding seat (5).

Accordingly, when the user sits on the chair, please refer to the fifth and sixth figures, and the user's arm can be placed on the armrest cover (7), and can be adjusted according to the user's comfortable arm placement position and angle. Please refer to the seventh figure, and force is applied to the armrest cover (7) to make the sliding seat (5) combined with the armrest cover (7) move forward and backward along the slide groove (51) to the desired position, and the fifth positioning part (61) with a convex edge on both sides of the fixing member (6) is arranged to engage with the fourth positioning part (53) with a wave-shaped groove on both sides of the slide groove (51) of the sliding seat (5), so as to position the sliding seat (5) and the armrest cover (7) at the desired position.

Furthermore, when the angles of the armrest cover (7) and the sliding seat (5) are to be adjusted, please refer to FIG. 8, which shows that the armrest cover (7) can be rotated by applying force to push the limit block (62) of the fixing member (6) through the long slot hole (52) of the sliding seat (5) combined with the armrest cover (7), and then the limit block (62) of the fixing member (6) pushes the groove wall of the limit groove (31) of the first cover plate (3), so as to drive the rotating seat (2) combined with the first cover plate (3) to rotate, and then the first hinge (25) is used as the rotation center. When the two ends of the arc-shaped limit hole (23) of the rotating seat (2) are aligned with the limit member (2 4) When in contact, the rotating seat (2) cannot rotate and swing, so that the left and right rotation angles of the armrest cover (7) are limited to an appropriate range, and the arc-shaped positioning pits arranged on the second positioning portion (26) on the bottom surface of the rotating seat (2) and the corresponding snap-fit design of the spherical positioning member (143) of the first positioning portion (14) of the assembly seat (11) of the armrest bracket (1) are used to position the rotating seat (2) together with the sliding seat (5) and the armrest cover (7) at the required angle. In this way, the front and rear position and angle can be adjusted to match the different arm postures of the user, so as to provide the user with a comfortable arm rest.

After the armrest cover (7) is rotated and swung toward the inner or outer side of the seat of the chair by the sliding seat (5), please refer to FIG. 9. The user can then apply force to the armrest cover (7) to drive the fixing member (6) to rotate via the sliding seat (5). At this time, the armrest cover (7) that was originally swung toward the inner or outer side of the seat of the chair by the rotating seat (2) is rotated and swung. , the sliding seat (5) and the fixing member (6) can be deflected at appropriate angles with the second pivot member (65) as the rotation center, and in particular, the armrest cover (7), the sliding seat (5) and the fixing member (6) can be arranged in a forward and backward direction. In this way, the user's arm placed on the armrest cover (7) can be placed correctly to better meet ergonomic requirements and further improve the riding comfort of the chair.

The aforementioned embodiments or drawings do not limit the implementation of the present invention. The present invention can also omit the second cover plate (4) according to the production requirements. Any appropriate changes or modifications made by a person with ordinary knowledge in the relevant technical field should be regarded as not departing from the patent scope of the present invention.

From the above structure and implementation method, it can be seen that the present invention has the following advantages:

1. The armrest structure of the chair of the present invention is provided with a sliding seat and a rotating seat, so that the armrest cover of the present invention can be adjusted according to the arm posture of the user when sitting on the chair, and the angle and front and rear position of the armrest can be adjusted to allow the user's arm to be rested comfortably.

2. The armrest structure of the chair of the present invention is to make the fixing member provided in the sliding seat pivotally connected with the rotating seat. Thus, when the sliding seat and the armrest cover swing inward or outward along with the rotating seat, the pivoting design of the fixing member and the rotating seat can further make the sliding seat do appropriate deflection, and can also make the sliding seat and the armrest cover move forward or backward to better meet the requirements of ergonomics, and further improve the riding comfort of the chair.

In summary, the embodiments of the present invention can achieve the expected effects, and the specific structure disclosed is not only not seen in similar products, but also has not been disclosed before the application. It fully complies with the provisions and requirements of the Patent Law. Therefore, an application for invention patent is filed in accordance with the law. I sincerely request your review and grant of patent. I would really appreciate the convenience.

1: Handrail bracket

11: Assembly seat

12: First keyhole

13: Second keyhole

14: First positioning part

2: Rotating seat

21: Third keyhole

22: First hinge

23: Arc-shaped limit hole

24: Limiting parts

25: First joint

26: Second positioning part

3: First cover plate

31: Limiting slot

32: The third positioning part

33: Through hole

4: Second cover plate

41: Hollow hole

5: Sliding seat

51: Chute

52: Long slot hole

53: Fourth positioning part

6: Fixing parts

61: Fifth positioning part

62: Limit block

63: Sixth positioning unit

64: Second hinge

65: Second hinged part

7: Handrail cover

Claims (7)

A chair armrest structure includes: an armrest bracket, wherein an assembly seat is provided at the upper end of the armrest bracket, and a first locking hole and a second locking hole are provided on the assembly seat, and a first positioning portion is provided on the assembly seat of the armrest bracket; a rotating seat is arranged above the assembly seat of the armrest bracket, and a third locking hole and a first pivot hole are provided on the rotating seat, and an arc-shaped limiting hole is provided between the third locking hole and the first pivot hole of the rotating seat, and the arc-shaped limiting hole and the armrest bracket are interlocked. The first locking hole of the assembly seat corresponds to the position of the first locking hole, and a limiting member is provided to penetrate the arc limiting hole and lock and combine with the first locking hole, and the first pivot hole corresponds to the position of the second locking hole of the assembly seat of the armrest bracket, and a first pivot member is provided to penetrate the first pivot hole and lock and combine with the second locking hole, and a second positioning portion is provided on the bottom surface of the rotating seat to correspond to the first positioning portion of the assembly seat of the armrest bracket and lock and position; a first cover plate is provided so that the first cover plate corresponds to and covers the first locking hole of the armrest bracket. The upper end of the rotating seat is combined with the rotating seat, and a limiting groove is provided on the first cover plate, and a through hole is provided at the bottom of the limiting groove to correspond to the position of the third lock hole of the rotating seat; a sliding seat is arranged on the upper part of the first cover plate, and a sliding groove is provided on the sliding seat, and a long slot hole is formed along the length of the sliding seat at the bottom of the sliding groove; a fixing member is arranged in the sliding groove of the sliding seat, and a limiting block is provided on the bottom surface of the fixing member, and the limiting block is provided. The block is penetrated through the long slot hole of the sliding seat and is arranged in the limiting groove of the first cover plate. A second pivot hole is provided on the fixing part to correspond to the through hole position of the limiting groove of the first cover plate. A second pivot part is provided to penetrate the second pivot hole and the through hole of the first cover plate in sequence and be locked and combined with the third locking hole of the rotating seat; an armrest cover is formed with a covering space on the bottom surface of the armrest cover, and the fixing part and the sliding seat cover are arranged in the covering space, and the armrest cover is combined with the sliding seat. As described in claim 1, the first positioning portion of the assembly seat of the armrest bracket includes a groove, and an elastic member and a positioning member are sequentially arranged in the groove, and the second positioning portion of the rotating seat includes a plurality of positioning pits arranged in an arc shape, so as to correspond to the positioning member of the first positioning portion of the assembly seat of the armrest bracket for locking and positioning. As described in claim 1, the armrest structure of the chair, wherein the limiting groove of the first cover plate is provided with a third positioning portion at the bottom of the groove, and the limiting block of the fixing member is provided with a sixth positioning portion on the bottom surface to correspond to the third positioning portion provided in the limiting groove of the first cover plate for locking and positioning. As described in claim 3, the armrest structure of the chair, wherein the third positioning portion of the limiting groove of the first cover plate includes a number of positioning pits arranged in an arc shape, and the sixth positioning portion of the limiting block of the fixing member includes a receiving groove, and an elastic member and a positioning member are sequentially arranged in the receiving groove, and the positioning member is locked and positioned correspondingly with the number of positioning pits provided in the third positioning portion of the limiting groove of the first cover plate. As described in claim 1, the armrest structure of the chair, wherein the sliding seat is formed with a fourth positioning portion on each of the two side groove walls of the sliding groove, and the fixing member is formed with a fifth positioning portion on each of its two sides, so as to respectively engage with the fourth positioning portions of the two side groove walls of the sliding seat for locking and positioning. As described in claim 5, the fourth positioning part provided on the two side groove walls of the sliding seat is a row of wave-shaped grooves provided along the length of the sliding seat, and the fifth positioning part provided on the two sides of the fixing member is a locking flange, which is respectively locked and positioned with the wave-shaped grooves provided on the fourth positioning part of the two side groove walls of the sliding seat. As described in claim 1, the chair armrest structure further comprises a second cover plate, which is correspondingly covered on the first cover plate and combined with the first cover plate, and a hollow hole is provided on the second cover plate, and the hollow hole corresponds to the shape and position of the limiting groove of the first cover plate, the sliding seat is arranged above the second cover plate, and the limiting block of the fixing member is arranged in the limiting groove of the first cover plate through the hollow hole of the second cover plate.

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