Chair and armrest mounting structure thereof

Abstract

The present invention discloses a chair and an armrest mounting structure thereof, comprising an armrest member, a slider, a chair column and a locking mechanism, wherein the slider is slidably mounted on the chair column, the armrest member is rotatably mounted on the slider, the locking mechanism has a locking state and an unlocking state, when the locking mechanism is in the locking state, the locking mechanism can limit the slider from sliding on the chair column, when the locking mechanism is in the unlocking state, the slider can slide up and down on the chair column, wherein when the armrest member is rotated upward from a starting position to a first stop position, the locking mechanism can switch from the locking state to the unlocking state; in the present technical solution, the armrest member can not only adjust the angle, but also adjust the height, thereby adapting to passengers of different physiques.

Description

Technical Field

[0001] The invention relates to the technical field of office furniture, in particular to a chair and an armrest mounting structure thereof. Background Art

[0002] For the purpose of comfort and safety, the seats in a car are usually provided with armrests on both sides or one side of the backrest. The position of the armrests can be adjusted. When the passenger sits on the seat, the armrests can be lowered (horizontally or approximately horizontally) and the passenger can put his arms on the armrests. When the passenger leaves the seat, the armrests can be folded up (vertically or approximately vertically) to facilitate the passenger to get in and out.

[0003] However, the height of such adjustable armrests currently on the market is fixed and cannot adapt to passengers of different physiques. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the purpose of the present invention is to overcome the shortcomings of the prior art and provide a chair and its armrest mounting structure, which armrest can not only rotate to achieve the two states of lowering and folding, but also move up and down to achieve height adjustment, thereby adapting to passengers of different physiques.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0006] An armrest installation structure comprises an armrest piece, a slider and a chair column, wherein the slider is slidably mounted on the chair column, and the armrest piece is rotatably mounted on the slider.

[0007] A latch, a toggle plate and a first spring are also provided, and a plurality of vertically arranged shift holes are provided on the chair column;

[0008] The slider is provided with a first mounting hole, and the latch is located in the first mounting hole;

[0009] The first spring sleeve is installed on the latch pin and makes the latch pin extend out of the shift hole or have a tendency to extend out of the shift hole;

[0010] The toggle piece is installed on the armrest;

[0011] Wherein, when the armrest is located at the starting position, the latch extends into the shift hole under the thrust of the toggle piece;

[0012] During the process of the armrest member rotating upward to the first stop position, the thrust of the toggle plate on the latch gradually decreases. When the armrest member rotates to the first stop position, the latch protrudes out of the shift hole under the thrust of the first spring.

[0013] Preferably, the slider is provided with a rotating column and a rotating protrusion, the armrest is provided with a through hole and an arc-shaped rotating groove, the armrest is sleeved on the rotating column through the through hole, when the rotating protrusion is located at one end of the rotating groove, the armrest is located at the starting position, and when the armrest is located at the first stop position, the rotating protrusion is located in the middle part of the rotating groove or at the other end of the rotating groove.

[0014] Preferably, a guide rail is further provided, the guide rail is fixedly mounted on the chair column, and the plurality of vertically arranged shift holes are located on the guide rail;

[0015] The sliding block is provided with a sliding hole, and the sliding block is sleeved and installed on the guide rail through the sliding hole.

[0016] Preferably, a mounting wall is further provided in the sliding hole, the mounting wall is located in front of the guide rail, a second mounting hole is provided on the mounting wall, the second mounting hole is coaxially distributed with the first mounting hole, and the latch is located in the first mounting hole and the second mounting hole;

[0017] The rear end of the first spring abuts against the mounting wall, and the front end of the first spring abuts against the latch or a retaining ring axially fixed on the latch.

[0018] Preferably, the armrest is further provided with an arc-shaped installation groove, and the toggle piece is installed in the installation groove;

[0019] The two ends of the toggle plate are end A and end B respectively. From end B to end A of the toggle plate, the toggle plate gradually moves away from the bottom wall of the mounting groove. When the armrest is in the starting position, the latch is opposite to end A of the toggle plate and extends into the shift hole under the action of end A of the toggle plate.

[0020] Preferably, a second spring is further provided, wherein the second spring is located at one end of the mounting groove;

[0021] The B end of the toggle plate is fixedly mounted on the other end of the mounting slot, and the A end of the toggle plate abuts against the second spring to put the second spring in a compressed state.

[0022] Preferably, the toggle plate is a metal plate.

[0023] Preferably, one end of the mounting groove is also fixedly connected or integrally formed with a limiting member, the limiting member is close to the second spring, and the limiting member can abut against the outer surface of the toggle plate to force the second spring to always be in a compressed state.

[0024] Preferably, a first stopper is provided, which is located in the sliding hole and movably mounted on the inner wall of the sliding hole through an elastic connection. During the up and down movement of the guide rail, the first stopper can extend out and into multiple stopper holes in sequence.

[0025] A chair comprises the armrest mounting structure as described above.

[0026] The beneficial effect of the present invention is that the armrest can not only adjust the angle but also adjust the height, thereby adapting to passengers of different physiques. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the handrail installation structure of the present invention;

[0028] Figure 2 It is an exploded schematic diagram of the handrail installation structure of the present invention;

[0029] Figure 3 It is a schematic diagram of the installation of the armrest member, the second spring, the toggle piece and the limit member of the present invention;

[0030] Figure 4 It is a schematic diagram of the installation of the armrest member, the second spring and the limit member of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the slider of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the guide rail of the present invention;

[0033] Figure 7 The figure is a schematic diagram of the installation of the latch, the first spring and the retaining ring of the present invention.

[0034] Explanation of the reference numerals in the accompanying drawings: 1. armrest; 2. chair column; 3. slider; 30. rotating column; 31. rotating protrusion; 10. through hole; 11. rotating groove; 4. guide rail; 40. shift hole; 32. first mounting hole; 5. latch; 6. first spring; 12. mounting groove; 7. toggle plate; 8. second spring; 9. limit member; 50. retaining ring; 33. mounting wall; 34. sliding hole. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] Embodiment 1:

[0041] like Figure 1 and Figure 2The chair seat comprises an armrest 1, a slider 3, a chair column 2 and a locking mechanism, wherein the slider 3 is slidably mounted on the chair column 2, the armrest 1 is rotatably mounted on the slider 3, and the locking mechanism has a locking state and an unlocking state. When the locking mechanism is in the locking state, the locking mechanism can limit the slider 3 from sliding on the chair column 2, and when the locking mechanism is in the unlocking state, the slider 3 can slide up and down on the chair column 2, wherein when the armrest 1 is rotated upward from the starting position to the first stop position, the locking mechanism can be switched from the locking state to the unlocking state;

[0042] The chair column 2 may be a part of the chair back, or may not be a part of the chair back and be installed separately on the chair seat;

[0043] And, the starting position of the armrest member 1 refers to the position where the armrest member 1 performs the armrest function, and at this time the armrest member 1 is horizontal or approximately horizontal.

[0044] In this way, the armrest 1 can not only adjust the angle, but also the height, thereby adapting to passengers of different physiques;

[0045] In addition, the rotation of the armrest is designed as a switch of the locking mechanism, which is ingenious and avoids the need to set up an additional switch to control the locking mechanism, thereby reducing the number of parts and components and saving costs.

[0046] In the embodiment of the present invention, Figure 2 , Figure 3 and Figure 4 As shown, the slider 3 is provided with a rotating column 30 and a rotating protrusion 31, and the armrest 1 is provided with a through hole 10 and an arc-shaped rotating groove 11. The armrest 1 is sleeved on the rotating column 30 through the through hole 10. When the rotating protrusion 31 is located at one end of the rotating groove 11, the armrest 1 is located at the starting position. When the armrest 1 is located at the first stop position, the rotating protrusion 31 is located in the middle part of the rotating groove 11 or at the other end of the rotating groove 11.

[0047] In the embodiment of the present invention, Figure 2 and Figure 6 As shown, the locking mechanism includes a guide rail 4 and a latch 5. The guide rail 4 is fixedly mounted on the chair column 2, and a plurality of vertically arranged shift holes 40 are provided on the guide rail 4; the slider 3 is slidably mounted on the guide rail 4, and a first mounting hole 32 is provided on the slider 3, and the latch 5 is located in the first mounting hole 32;

[0048] When the locking mechanism is in a locked state, the latch pin 5 is located in the shift hole 40 , and when the locking mechanism is in an unlocked state, the latch pin 5 is located outside the shift hole 40 .

[0049] In this way, the locking state and the unlocking state of the locking mechanism are switched by the cooperation between the latch pin 5 and the shift hole 40, which has a simple structure and saves costs, while also ensuring the stability of the armrest installation structure.

[0050] In the embodiment of the present invention, Figure 2 , Figure 4 and Figure 7 As shown, the locking mechanism further includes a first spring 6 and a toggle plate 7. The first spring 6 is sleeved and mounted on the latch 5, and enables the latch 5 to extend out of the shift hole 40 or have a tendency to extend out of the shift hole 40;

[0051] The armrest 1 is also provided with an arc-shaped installation groove 12, and the toggle piece 7 is installed in the installation groove 12;

[0052] When the armrest 1 is located at the first stop position, the first spring 6 causes the latch 5 to extend out of the shift hole 40;

[0053] When the armrest 1 leaves the first resting position and rotates downward, the toggle piece 7 causes the latch 5 to extend into the shift hole 40 .

[0054] Further preferably, the two ends of the toggle piece 7 are end A and end B respectively. From end B to end A of the toggle piece 7, the toggle piece 7 gradually moves away from the bottom wall of the mounting groove 12. When the armrest member 1 is in the starting position, the latch 5 is opposite to end A of the toggle piece 7 and extends into the shift hole 40 under the action of end A of the toggle piece 7.

[0055] In this way, the present invention mainly realizes the extension of the latch 5 into the shift hole 40 through the joint action of the first spring 6 and the toggle piece 7. Specifically, when the armrest 1 is located at the starting position, the force of the toggle piece 7 on the latch 5 is greater than the force of the first spring 6 on the latch 5. At this time, the latch 5 extends into the shift hole 40 under the action of the toggle piece 7. When the armrest 1 rotates upward from the starting position, the force of the toggle piece 7 on the latch 5 gradually decreases. When the armrest 1 rotates to the first stop position, the force of the first spring 6 on the latch 5 is greater than the force of the toggle piece 7 on the latch 5, and then the latch 5 extends out of the shift hole 40 under the action of the first spring 6.

[0056] In the embodiment of the present invention, Figure 4 As shown, a second spring 8 is also provided, and the second spring 8 is located at one end in the mounting groove 12;

[0057] The B end of the paddle plate 7 is fixedly mounted on the other end of the mounting groove 12 , and the A end of the paddle plate 7 abuts against the second spring 8 to put the second spring 8 in a compressed state.

[0058] In this way, the elasticity of the toggle piece 7 is further increased, so that during the rotation of the armrest 1 , the contact between the toggle piece 7 and the latch 5 is smoother, thereby ensuring the smoothness of the rotation of the armrest 1 .

[0059] Further preferably, one end of the installation slot 12 is fixedly connected or integrally formed with a stopper 9, the stopper 9 is close to the second spring 8, and the stopper 9 can abut against the outer surface of the toggle piece 7 to force the second spring 8 to always be in a compressed state. This not only ensures the stability of the installation of the toggle piece 7, but also reduces the travel distance of the latch 5, thereby improving the smoothness of the height adjustment switching between the locked state and the unlocked state.

[0060] Further preferably, the paddle plate 7 is a metal plate.

[0061] The slide block 3 can be slidably mounted on the guide rail 4 through a dovetail groove or a T-slot structure; Figure 5 As shown, the slider 3 is provided with a sliding hole 34 , and the slider 3 is sleeved on the guide rail 4 through the sliding hole 34 , thereby achieving the fixation of the slider 3 and the guide rail 4 in the horizontal direction.

[0062] Further preferably, a mounting wall 33 is further provided in the sliding hole 34, the mounting wall 33 is located in front of the guide rail 4, a second mounting hole is provided on the mounting wall 33, the second mounting hole is coaxially distributed with the first mounting hole 32, and the latch 5 is located in the first mounting hole 32 and the second mounting hole;

[0063] The specific structure of the first spring 6 pushing the latch 5 out of the shift hole 40 can be as follows: Figure 7 As shown: a retaining ring 50 is axially fixed on the latch 5, and the first spring 6 pushes the latch 5 by abutting against the retaining ring 50;

[0064] Alternatively, the latch pin 5 is a stepped shaft, the first spring 6 is sleeved on a shaft body with a smaller diameter on the latch pin 5 , and abuts against an end face of the shaft body with a larger diameter on the latch pin 5 , thereby achieving the purpose of pushing the latch pin 5 .

[0065] In the embodiment of the present invention, a first shifting member is further provided. The first shifting member is located in the sliding hole 34 and is movably mounted on the inner wall of the sliding hole 34 through an elastic connection. During the up and down movement of the guide rail 4, the first shifting member can be extended into the plurality of shifting holes 40 in sequence. Further preferably, the first shifting member can be the movable end of an elastic arm arranged in the sliding hole 34, or can be a spherical member installed in the sliding hole 34 through a spring member. This arrangement can not only bring a sense of shifting, but also provide guidance to the passengers: when the movable end of the elastic arm extends into the shifting hole 40, it means that the latch 5 is aligned with the shifting hole 40 at this time, so that when the armrest member 1 is rotated downward, the latch 5 can extend into the shifting hole 40.

[0066] It is worth noting here that a similar structure can also be provided in the rotational cooperation structure between the armrest 1 and the slider 3 , so that the rotation of the armrest 1 also has a gear sense.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0068] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An armrest installation structure, comprising an armrest member (1), a slider (3) and a chair column (2), wherein the slider (3) is slidably mounted on the chair column (2), and the armrest member (1) is rotatably mounted on the slider (3), characterized in that; A latch (5), a toggle plate (7) and a first spring (6) are also provided. The chair column (2) is provided with a plurality of vertically arranged shift holes (40); the slider (3) is provided with a first mounting hole (32), and the latch (5) is located in the first mounting hole (32); the first spring (6) is sleeved and installed on the latch (5) and enables the latch (5) to extend out of the shift hole (40) or have a tendency to extend out of the shift hole (40); the toggle plate (7) is arranged The armrest (1) is mounted on the armrest member; wherein, when the armrest member (1) is located at the starting position, the latch (5) extends into the shift hole (40) under the thrust of the toggle plate (7); during the process of the armrest member (1) rotating upward to the first stop position, the thrust of the toggle plate (7) on the latch (5) gradually decreases, and when the armrest member (1) rotates to the first stop position, the latch (5) extends out of the shift hole (40) under the thrust of the first spring (6); The armrest member (1) is also provided with an arc-shaped mounting groove (12), and the toggle plate (7) is mounted in the mounting groove (12); the two ends of the toggle plate (7) are respectively an A end and a B end, and from the B end to the A end of the toggle plate (7), the toggle plate (7) gradually moves away from the bottom wall of the mounting groove (12), and when the armrest member (1) is located at the starting position, the latch (5) faces the A end of the toggle plate (7) and extends into the shift hole (40) under the action of the A end of the toggle plate (7).

2. The handrail installation structure according to claim 1, characterized in that: The slider (3) is provided with a rotating column (30) and a rotating protrusion (31); the armrest (1) is provided with a through hole (10) and an arc-shaped rotating groove (11); the armrest (1) is sleeved on the rotating column (30) through the through hole (10); when the rotating protrusion (31) is located at one end of the rotating groove (11), the armrest (1) is located at a starting position; when the armrest (1) is located at a first stop position, the rotating protrusion (31) is located at a middle part of the rotating groove (11) or at the other end of the rotating groove (11).

3. The handrail installation structure according to claim 1 or 2, characterized in that: A guide rail (4) is also provided, the guide rail (4) is fixedly mounted on the chair column (2), and the plurality of vertically arranged shift holes (40) are located on the guide rail (4); a sliding hole (34) is provided on the slider (3), and the slider (3) is sleeved and mounted on the guide rail (4) through the sliding hole (34).

4. The handrail installation structure according to claim 3, characterized in that: A mounting wall (33) is also provided in the sliding hole (34), the mounting wall (33) is located in front of the guide rail (4), a second mounting hole is provided on the mounting wall (33), the second mounting hole is coaxially distributed with the first mounting hole (32), the latch (5) is located in the first mounting hole (32) and the second mounting hole; the rear end of the first spring (6) abuts against the mounting wall (33), and the front end of the first spring (6) abuts against the latch (5) or a retaining ring (50) axially fixed on the latch (5).

5. The handrail installation structure according to claim 1, characterized in that: A second spring (8) is also provided, and one end of the second spring (8) is located in the mounting groove (12); the B end of the toggle plate (7) is fixedly mounted on the other end of the mounting groove (12), and the A end of the toggle plate (7) abuts against the second spring (8) and places the second spring (8) in a compressed state.

6. The handrail installation structure according to claim 1, characterized in that: The toggle plate (7) is a metal plate.

7. The handrail installation structure according to claim 1, characterized in that: One end of the installation groove (12) is also fixedly connected or integrally formed with a limiting member (9), the limiting member (9) is close to the second spring (8), and the limiting member (9) can abut against the outer surface of the shifting plate (7) to force the second spring (8) to always be in a compressed state.

8. The handrail installation structure according to claim 3, characterized in that: A first stopper is also provided. The first stopper is located in the sliding hole (34) and is movably mounted on the inner wall of the sliding hole (34) through an elastic connection. During the upward and downward movement of the guide rail (4), the first stopper can extend out and into the plurality of stopper holes (40) in sequence.

9. A chair, characterized in that: It comprises a handrail mounting structure according to any one of claims 1-8.

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