Seat armrest

Abstract

The invention relates to a seat armrest which comprises a fixed armrest plate and a turnover armrest plate hinged to the fixed armrest plate, and further comprises a hinge lock mechanism which enables the fixed armrest plate to be fixed relative to the fixed armrest plate after the turnover armrest plate is turned over to adjust the angle. At least part of the hinge lock mechanism is arranged on the fixed armrest plate, the remaining part of the hinge lock mechanism is arranged on the turnover armrest plate, and at least part of the hinge lock mechanism and the remaining part of the hinge lock mechanism are locked in a matched mode through a concave-convex structure. The hinge lock mechanism has the advantages that the designed hinge lock mechanism can facilitate angle adjustment and angle locking after adjustment, so that the convenience and reliability of operation are improved.

Description

Technical Field

[0001] The present application belongs to the field of furniture, and in particular relates to a chair armrest. Background Art

[0002] A seat is a kind of seating furniture with a backrest and some also have armrests. Most seats rely on seat frames for support. With the development of modern technology, most seat armrests basically have adjustment functions, such as lateral movement, longitudinal movement and so on.

[0003] Patent CN219249649U discloses a chair armrest, including an armrest frame and an armrest body hinged to the armrest frame, the armrest body including an armrest base and an armrest cover installed on the armrest base, the armrest base including a front end base and a rear end base, the rear end base is provided with a sliding guide mechanism arranged in an axial direction, the sliding guide mechanism is provided with a hinge seat assembly and a corresponding rotating shaft, the rotating shaft is connected to a support arm extending in the direction of the front end base, the front end base is connected and fixed to the support arm, so that the front end base can be warped upward relative to the rear end base.

[0004] In the prior art, a locking connection method such as a spring sheet is usually used between the fixed armrest plate and the flip armrest plate. When the spring sheet is used for angle adjustment, the production cost is high and the processing is difficult. The subsequent maintenance cost is high, and the convenience of adjusting the angle of the armrest plate is poor. Summary of the invention

[0005] The purpose of the present invention is to provide a chair armrest that can solve the above technical problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A seat armrest, comprising a fixed armrest plate and a flip armrest plate hinged to the fixed armrest plate, the seat armrest also comprising an articulated lock mechanism which fixes the fixed armrest plate relative to the fixed armrest plate when the flip armrest plate is flipped to adjust the angle, the articulated lock mechanism is at least partially arranged on the fixed armrest plate, and the remaining part of the articulated lock mechanism is arranged on the flip armrest plate, and at least part of the articulated lock mechanism is locked with the remaining part of the articulated lock mechanism through a concave-convex structure.

[0007] Furthermore, the articulated lock mechanism is a push-type telescopic lock mechanism, and in the width direction of the fixed armrest plate, the articulated lock mechanism is alternately telescoped between an unlocking position and a canceling unlocking position.

[0008] Furthermore, the fixed armrest plate and the flip armrest plate are connected via a hinge mechanism spaced apart from the hinge lock mechanism, and an elastic member is provided between the hinge lock mechanism and the hinge mechanism.

[0009] Furthermore, the hinged locking mechanism includes a fixed shaft tube arranged on the rear side of the flip armrest plate, a pressing piece is movably inserted in the width direction of the front side of the fixed armrest plate, and at least a part of the pressing piece is sleeved with the fixed shaft tube, and the pressing piece and the fixed shaft tube, as well as the pressing piece and the fixed armrest plate are respectively connected through the concave-convex structure; when the pressing piece and the concave-convex structure of the fixed armrest plate are no longer matched, the flip armrest plate can be flipped relative to the fixed armrest plate.

[0010] Furthermore, at least a portion of the pressing piece is always inserted in the fixed shaft tube, and the concave-convex structure includes a plurality of locking teeth and a plurality of locking tooth grooves that are meshed with each other and can move axially, and any one of the locking teeth and the locking tooth grooves is respectively arranged on the axial direction of the fixed shaft tube and the fixed armrest plate, and the remaining one is arranged on the axial direction of the pressing piece.

[0011] Furthermore, a stop cylinder sleeved on the pressing piece is provided on the fixed armrest plate, any one of the locking tooth and the locking tooth groove is provided at the inner end of the inner wall of the stop cylinder, and the remaining one is provided in the axial direction of the pressing piece.

[0012] Furthermore, the stop cylinder is movably sleeved with a corresponding end of the fixed shaft tube.

[0013] Furthermore, the articulated mechanism includes an articulated kit fixed to the front side of the fixed armrest plate and movably connected to the corresponding end of the fixed shaft tube, and an insertion piece at least partially extending into the fixed shaft tube is provided in the articulated kit, the elastic piece is a spring, and one end of the elastic piece acts on the insertion piece.

[0014] Furthermore, a number of the locking teeth form a fan-shaped tooth portion and are respectively arranged in the axial direction of the fixed shaft tube and the fixed armrest plate, a number of the locking tooth grooves form a fan-shaped tooth groove portion and are arranged in the axial direction of the pressing member, the total number of teeth of the locking teeth arranged on the fixed shaft tube is equal to the total number of teeth of the locking teeth arranged on the fixed armrest plate, and the total number of teeth of the locking teeth on the fixed shaft tube or the fixed armrest plate is greater than the total number of teeth of the locking tooth grooves.

[0015] Furthermore, a curved convex surface is provided on the front side of the fixed armrest plate, and a curved concave surface is provided on the rear side of the flip armrest plate, and the curved convex surface and the curved concave surface are adapted to each other.

[0016] Compared with the existing technology, the advantages of this application are: The specially designed hinged lock mechanism can facilitate the adjustment of the angle and lock the adjusted angle to improve the convenience and reliability of operation.

[0017] The installation and production cost of the articulated lock mechanism is lower, the parts are simpler, and the concave and convex structure is used to lock the angle, so its service life is longer and the subsequent maintenance cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the assembly of the finished product of the chair armrest body of the present invention; Figure 2 It is a schematic diagram of the assembly of the main internal components of the chair armrest of the present invention; Figure 3 for Figure 2 A magnified view of the details of the main components in area A; Figure 4 It is an exploded view of the right front of the main components of the seat armrest of the present invention; Figure 5 It is an exploded view of the left front of the main components of the seat armrest of the present invention; Figure 6 A detailed view of the inner part of the armrest frame of the chair armrest of the present invention; Figure 7 It is a transmission schematic diagram of the height adjustment mechanism of the present invention.

[0019] In the figure, there are a fixed armrest plate 1, a stop cylinder 10, an arc-shaped convex surface 11, a flip armrest plate 2, an arc-shaped concave surface 20, an articulated locking mechanism 3, a fixed shaft tube 30, a pressing piece 31, a locking tooth 32, a locking tooth groove 33, an articulated mechanism 4, an articulated kit 40, an insertion piece 400, an elastic piece 5, an armrest frame 6, a posture adjustment system 7, a front and rear adjustment mechanism 70, a first wave gear 700, a first protrusion 701, an angle adjustment mechanism 71, a second wave gear 710, a second protrusion 711, a height adjustment mechanism 72, a shaft rod 720, a lever arm rod 721, an adjustment button 721-1, a tooth groove gear structure 722, a tooth block 722-1, and a hole groove 722-2. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0021] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] 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.

[0023] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0024] Embodiment 1

[0025] like Figure 1 As shown, the seat armrest includes a fixed armrest plate 1 and a flip armrest plate 2 hinged to the fixed armrest plate 1, wherein there is an articulated lock mechanism 3 between the fixed armrest plate 1 and the flip armrest plate 2, and the articulated lock mechanism 3 can make the flip armrest plate 2 flip and adjust the angle so that the fixed armrest plate 1 is fixed relative to the fixed armrest plate 1, and at the same time, the remaining part of the articulated lock mechanism 3 is arranged on the flip armrest plate 2, and at least part of the articulated lock mechanism 3 is locked with the remaining part of the articulated lock mechanism 3 through a concave-convex structure. Specifically, the structure of the articulated lock mechanism 3 includes a plurality of locking nodes, which can be fixed and adjusted to different degrees according to the needs of the user. When the flip armrest plate 2 flips upward, once it flips to a predetermined angle, the locking nodes in the articulated lock mechanism 3 are engaged, so that the flip armrest plate 2 is firmly fixed.

[0026] Specifically, in the present embodiment, the articulated lock mechanism 3 is a push-type telescopic lock mechanism. In the width direction of the fixed armrest panel 1, the articulated lock mechanism 3 is alternately telescoped between the unlocked position and the canceled unlocked position. In the working state, when the user presses the switch of the articulated lock mechanism 3, the articulated lock mechanism 3 enters the unlocked position, allowing the flip armrest panel 2 to flip freely. Once the user adjusts to a satisfactory angle and gently releases the press switch, the articulated lock mechanism 3 will automatically switch to the canceled unlocked position. In this state, the locking component quickly recovers and extends, firmly fixing the flip armrest panel 2 to ensure its safety and stability during use. Among them, the fixed armrest panel 1 and the flip armrest panel 2 are connected by an articulated mechanism 4 spaced from the articulated lock mechanism 3, and an elastic member 5 with a restoring function is provided between the articulated mechanism 4 and the above-mentioned articulated lock mechanism 3. Its function is to lock the position between the flip armrest panel 2 and the fixed armrest panel 1, and to provide a restoring force from the unlocked position to the canceled unlocked position. In the present embodiment, a spring is used as the elastic member 5, which can be optimized according to the specific working environment. Further, as Figure 4-Figure 5 The shown articulated mechanism 4 includes an articulated kit 40 fixed to the front side of the fixed armrest plate 1 and movably connected to the corresponding end of the fixed shaft tube 30, and an insertion piece 400 at least partially inserted into the fixed shaft tube 30 is provided in the articulated kit 40, and one end of the elastic member 5 acts on the insertion piece 400, and the insertion piece 400 and the articulated kit 40 are assembled structures. A stop shoulder is provided on the inner wall of the articulated kit 40, and a stop portion is provided on the outer side of the insertion piece 400. When the stop shoulder and the stop portion abut against each other, the insertion piece 400 and the articulated kit 40 are assembled in place.

[0027] like Figure 4-Figure 5 As shown, the hinged lock mechanism 3 includes a fixed shaft tube 30 arranged at the rear side of the flip armrest board 2, and a pressing piece (i.e., the locking component) that is movable in the width direction and penetrates the front side of the fixed armrest board 1, and at least a portion of the pressing piece 31 is sleeved with the fixed shaft tube 30, and the pressing piece 31 and the fixed shaft tube 30, as well as the pressing piece 31 and the fixed armrest board 1 are respectively connected by a concave-convex structure, which is a locking structure. When the concave-convex structure of the pressing piece 31 and the fixed armrest board 1 is unmatched, the flip armrest board 2 can be flipped relative to the fixed armrest board 1; At least part of the pressing member 31 is always inserted in the fixed shaft tube 30, and the concave-convex structure includes a plurality of locking teeth 32 and a plurality of locking tooth grooves 33 that are meshed with each other and can move axially. Any one of the locking teeth 32 and the locking tooth grooves 33 is respectively arranged on the axial direction of the fixed shaft tube 30 and the fixed handrail plate 1, and the remaining one is arranged on the axial direction of the pressing member 31, wherein the locking teeth 32 extend axially respectively, and the locking tooth grooves 33 cooperate with the position of the locking teeth to ensure that when the pressing member 31 is in a locked state, the flip The armrest board 2 can remain stable and will not loosen due to external force. The locking teeth 32 form a fan-shaped tooth portion and are respectively arranged on the axial direction of the fixed shaft tube 30 and the fixed armrest board 1. A number of locking tooth grooves 33 form a fan-shaped tooth groove portion and are arranged in the axial direction of the pressing piece 31. The total number of teeth of the locking teeth 32 arranged on the fixed shaft tube 30 is equal to the total number of teeth of the locking teeth 32 arranged on the fixed armrest board 1, and the total number of teeth of the locking teeth 32 on the fixed shaft tube 30 or the fixed armrest board 1 is greater than the total number of teeth of the locking tooth grooves 33.

[0028] In order to prevent the elastic member 5 from ejecting the pressing member 31 out of the armrest, a stop cylinder 10 is provided on the fixed armrest plate 1 to cooperate with the elastic member 5 and is sleeved on the pressing member 31. The stop cylinder 10 is used to constrain and regulate the stop position of the pressing member 31, and any one of the locking teeth 32 and the locking tooth groove 33 is arranged at the inner end of the inner wall of the stop cylinder 10, and the remaining one is arranged in the axial direction of the pressing member 31. At the same time, the stop cylinder 10 is movably sleeved with the corresponding end of the fixed shaft tube 30. In this embodiment, the locking tooth 32 is arranged in the axial direction of the pressing piece 31, and the locking tooth groove 33 is arranged in the stop cylinder 10 and the fixed shaft tube 30. When the locking tooth 32 in the pressing piece 31 is engaged with the locking tooth groove 33 in the stop cylinder 10 and the fixed shaft tube 30 at the same time, the articulated locking mechanism 3 is in a canceled unlocking position state; when the locking tooth 32 in the pressing piece 31 is engaged with the locking tooth groove 33 in the stop cylinder 10 or the fixed shaft tube 30 alone, the articulated locking mechanism 3 is in an unlocking position state.

[0029] Furthermore, in order to ensure smooth flipping between the fixed armrest board 1 and the flip armrest board 2, an arcuate convex surface 11 is provided on the front side of the fixed armrest board 1, and an arcuate concave surface 20 is provided on the rear side of the flip armrest board 2, and the arcuate convex surface 11 and the arcuate concave surface 20 are adapted to each other.

[0030] Embodiment 2

[0031] The structure and principle of this embodiment are basically the same as those of the first embodiment. The difference lies in that, with respect to the seat armrest of the first embodiment, this embodiment describes other main components of the seat armrest.

[0032] like Figure 2-Figure 3 As shown, the chair armrest also includes an armrest frame 6 connected to the fixed armrest board 1 at one end, and the other end of the armrest frame 6 is fixedly connected to the seat. Specifically, the armrest frame 6 is directly connected to the fixed armrest board 1 through the posture adjustment system 7, as shown in FIG. Figure 2-Figure 3 As shown, the posture adjustment system 7 includes a front-to-back adjustment mechanism 70, and the front-to-back adjustment mechanism 70 is at least partially arranged on the fixed armrest board 1, and the remaining part of the front-to-back adjustment mechanism 70 is arranged on the armrest frame 6, and at least part of the front-to-back adjustment mechanism 70 is connected to the remaining part through a first concave-convex structure. In this embodiment, the first concave-convex structure includes a first wave gear 700 arranged on the fixed armrest board 1, and a first protrusion 701 arranged on the armrest frame 6. The first protrusion 701 has a convex surface that matches the groove contour of the first wave gear 700. When the user needs to adjust the front-to-back position of the fixed armrest board 1, it is only necessary to directly apply an appropriate force along the length direction of the fixed armrest board 1 to adjust the front-to-back position of the fixed armrest board 1. When the force is removed, the first protrusion 701 will, under the action of the elastic member, press against the groove of the first wave gear 700 to lock the front-to-back position of the fixed armrest board 1.

[0033] In addition, the posture adjustment system 7 also includes an angle adjustment mechanism 71 that allows the fixed armrest board 1 to rotate relative to the axis of the armrest frame 6. Similar to the above-mentioned front and rear adjustment mechanism 70, the angle adjustment mechanism 71 includes a first concave-convex structure that is at least partially provided on the fixed armrest board 1, and the remaining part of the first concave-convex structure is provided on the armrest frame 6. Specifically, the first concave-convex structure includes a second wave gear 710 provided on the fixed armrest board 1, and a second protrusion 711 provided on the armrest frame 6. The above-mentioned second protrusion 711 also has a convex surface that matches the contour of the wave groove of the second wave gear 710. When the user needs to adjust the angular position of the fixed armrest board 1, it only needs to directly apply an appropriate torsional force around the axis of the armrest frame 6 to adjust the angular position of the fixed armrest board 1. When the force is removed, the second protrusion 711 will, under the action of the elastic member, press against the wave groove of the second wave gear 710 to lock the angular position of the fixed armrest board 1.

[0034] Furthermore, in this embodiment, the handrail frame 6 is a hollow structure. Figure 6-Figure 7As shown, a height adjustment mechanism 72 for adjusting the height of the fixed armrest board 1 is arranged inside the armrest frame 6, and the height adjustment mechanism 72 includes a shaft rod 720 and two lever arms 721 fixedly connected to the shaft rod 720. Specifically, one of the lever arms 721 is at least partially exposed from the armrest frame 6 and is provided with an adjustment button 721-1, and a tooth groove gear structure 722 is provided between the other lever arm 721 and the armrest frame 6. The tooth groove gear structure 722 includes a tooth block 722-1 arranged on the lever arm 721, and a plurality of tooth blocks 722-1 arranged on the axial direction of the armrest frame 6. The hole groove 722-2, specific operation steps: when the user needs to adjust the height position of the fixed armrest board 1, only need to press the above-mentioned adjustment button 721-1, under the action of the force arm, the force arm rod 721 provided with the tooth block 722-1 will rotate around the shaft 720, at the same time, the tooth block 722-1 will be separated from the hole groove 722-2, and enter the height unlocking state, the user adjusts the fixed armrest board 1 to the required position, releases the adjustment button 721-1, and the tooth block 722-1 will re-engage the hole groove 722-2 under the action of the elastic member to lock the height position.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A chair armrest, comprising a fixed armrest plate (1), and a flip armrest plate (2) hinged to the fixed armrest plate (1), characterized in that: The chair armrest also includes an articulated locking mechanism (3) which fixes the fixed armrest plate (1) relative to the fixed armrest plate (1) when the flip armrest plate (2) is flipped to adjust the angle, wherein at least a portion of the articulated locking mechanism (3) is arranged on the fixed armrest plate (1), and the remaining portion of the articulated locking mechanism (3) is arranged on the flip armrest plate (2), and at least a portion of the articulated locking mechanism (3) is locked with the remaining portion of the articulated locking mechanism (3) by means of a concave-convex structure.

2. The chair armrest according to claim 1, characterized in that: The hinged lock mechanism (3) is a push-type telescopic lock mechanism, and in the width direction of the fixed armrest plate (1), the hinged lock mechanism (3) is alternately telescoped between an unlocking position and a canceling unlocking position.

3. The chair armrest according to claim 1 or 2, characterized in that: The fixed armrest plate (1) and the flip armrest plate (2) are connected via a hinge mechanism (4) spaced apart from the hinge lock mechanism (3), and an elastic member (5) is provided between the hinge lock mechanism (3) and the hinge mechanism (4).

4. The chair armrest according to claim 3, characterized in that: The hinge lock mechanism (3) comprises a fixed shaft tube (30) arranged at the rear side of the flip armrest plate (2), a pressing piece (31) is movably inserted in the width direction of the front side of the fixed armrest plate (1), and at least a part of the pressing piece (31) is sleeved with the fixed shaft tube (30), and the pressing piece (31) and the fixed shaft tube (30) are respectively connected through the concave-convex structure; when the pressing piece (31) and the concave-convex structure of the fixed armrest plate (1) are no longer matched, the flip armrest plate (2) can be flipped relative to the fixed armrest plate (1).

5. The chair armrest according to claim 4, characterized in that: At least a portion of the pressing member (31) is always inserted into the fixed shaft tube (30), and the concave-convex structure comprises a plurality of locking teeth (32) and a plurality of locking tooth grooves (33) that mesh with each other and can move axially, wherein any one of the locking teeth (32) and the locking tooth grooves (33) is respectively arranged on the axial direction of the fixed shaft tube (30) and the fixed armrest plate (1), and the remaining one is arranged on the axial direction of the pressing member (31).

6. The chair armrest according to claim 5, characterized in that: A stop cylinder (10) sleeved on the pressing piece (31) is provided on the fixed armrest plate (1), and any one of the locking tooth (32) and the locking tooth groove (33) is provided at the inner end of the inner wall of the stop cylinder (10), and the remaining one is provided in the axial direction of the pressing piece (31).

7. The chair armrest according to claim 5, characterized in that: The stop cylinder (10) is movably sleeved with corresponding ends of the fixed shaft tube (30).

8. The chair armrest according to claim 4, characterized in that: The hinge mechanism (4) comprises a hinge assembly (40) fixed to the front side of the fixed armrest plate (1) and movably sleeved with the corresponding end of the fixed shaft tube (30), an insertion piece (400) at least partially extending into the fixed shaft tube (30) is provided in the hinge assembly (40), and the elastic piece (5) is a spring, and one end of the elastic piece (5) acts on the insertion piece (400).

9. The chair armrest according to claim 5, characterized in that: A plurality of the locking teeth (32) form a fan-shaped tooth portion and are respectively arranged on the axial direction of the fixed shaft tube (30) and the fixed armrest plate (1); a plurality of the locking tooth grooves (33) form a fan-shaped tooth groove portion and are arranged on the axial direction of the pressing member (31); the total number of teeth of the locking teeth (32) arranged on the fixed shaft tube (30) is equal to the total number of teeth of the locking teeth (32) arranged on the fixed armrest plate (1); the total number of teeth of the locking teeth (32) on the fixed shaft tube (30) or the fixed armrest plate (1) is greater than the total number of teeth of the locking tooth grooves (33).

10. The chair armrest according to claim 1, characterized in that: The front side of the fixed armrest plate (1) is provided with an arc-shaped convex surface (11), and the rear side of the flip armrest plate (2) is provided with an arc-shaped concave surface (20), and the arc-shaped convex surface (11) and the arc-shaped concave surface (20) are adapted to each other.

Images