A seat arm structure and a seat thereof

Abstract

The utility model relates to a kind of seat armrest structure and its seat, including armrest, armrest includes handle part and support part, the upper end of handle part is shaped with assembly block upwards, multiple clamping grooves are constructed with the side of assembly block radially, and convex block is formed between adjacent clamping groove;Support part includes first connecting plate and second connecting plate, the bottom surface of first butt joint groove is constructed with multiple clamping rib that correspondingly clamps into multiple clamping grooves radially, and the clamping port corresponding to convex block is formed between adjacent clamping rib;Part of convex block is constructed with bolt hole, and the bolt seat that is inserted into bolt hole is equipped in clamping port;First connecting plate and second connecting plate are spliced and fixed and clamped in the two sides of assembly block.In the above scheme, the side wall of armrest assembly block is formed with multiple clamping grooves arranged radially, and the inner surface of support part first connecting plate is equipped with radial setting clamping rib corresponding to clamping into clamping groove from side, greatly improve the connecting area between handle part and support part in armrest, greatly improve the connecting strength between both.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to a seat armrest structure and a seat thereof. Background Technology

[0002] The armrests of existing chairs are located on both sides of the seat cushion. They typically include a handle connected to the seat cushion and an armrest body located at the upper end of the handle. The armrest body is mounted on the upper end of the handle and connected to the handle by bolts. For example, a Chinese utility model patent with publication number CN223068251U discloses a lightweight armrest adapted to a swivel chair. The armrest includes a support frame and an armrest board. The bottom of the support frame is fixed to the bottom of the seat board. The support frame supports upward to form an upright rod-shaped structure. The top of the support frame is fixedly connected to the armrest board. The upper surface of the armrest board is formed as a support surface to support the upper limbs. The armrest board is formed as a flat support plate structure. The armrest board has an arc-shaped gripper. The gripper is bent downward based on the upper surface of the armrest board. The support frame is formed by the bottom of the seat board to create an upward upper limb support section. The armrest board forms the support surface. The armrest board has a flat structure and is fixed to the support frame. The support structure is reliable. The armrest board also has a comfortable grip to make it easy to get up from the seat. The armrest board is simple, reliable and provides stable support.

[0003] In the above design, the handrail board is mounted on top of the support frame and is only fixed to the upper part of the support frame with bolts. This assembly structure results in low connection strength between the support frame and the handrail board. During user use, especially when applying significant force to the handrail when standing up, there is a risk of the handrail board head detaching, affecting the product's lifespan. In addition, the handrail panel is only snapped to the lower handrail plate, making it even more prone to detachment. Summary of the Invention

[0004] To solve the above problems, the first objective of this utility model is to provide a seat armrest structure. By setting an assembly block at the upper end of the handle, and by having the slot on the assembly block engage with the snap-fit ​​rib on the support, the connection strength between the armrest handle and the support is greatly improved, and the assembly and disassembly process is made simpler, thus improving convenience. The second objective of this utility model is to provide a seat having the above-mentioned seat armrest structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A seat armrest structure includes an armrest, the lower end of which is connected to the bottom of a seat cushion; characterized in that: the armrest includes a curved handle and a support fixed to the upper end of the handle, the upper end of the handle is formed with an assembly block, a plurality of slots are radially constructed on one side of the assembly block, the outer ends of the slots extend to the upper surface of the assembly block, and protrusions are formed between adjacent slots.

[0007] The support includes a first connecting plate and a second connecting plate clamped on the left and right sides of the assembly block. The first connecting plate and the second connecting plate have a first mating groove and a second mating groove respectively formed on their opposite sides. The bottom surface of the first mating groove has multiple snap-fit ​​ribs that are corresponding to multiple snap-fit ​​grooves. The upper ends of the snap-fit ​​ribs extend out of the upper end of the assembly block, and the snap-fit ​​ribs form a snap-fit ​​opening corresponding to the protrusions. Some of the protrusions have bolt holes, and the snap-fit ​​openings are provided with bolt seats that are adapted to be inserted into the bolt holes. The first connecting plate and the second connecting plate are spliced ​​and fixed together and clamped on both sides of the assembly block.

[0008] In the above solution, the handrail includes a handle and a support. The upper end of the handle is formed with an assembly block, and multiple radially arranged slots are formed on the side wall of the assembly block. The support is used to support the user's arm and includes a first connecting plate and a second connecting plate clamped on both sides of the assembly block. The inner surface of the first connecting plate is provided with radially arranged snap-fit ​​ribs that correspond to snapping into the slots from the side, effectively preventing displacement between the handle and the support in the front-back and radial directions. This greatly increases the connection area between the handle and the support in the handrail, significantly improves the connection strength between the two, prevents loosening between them, and enables quick installation and positioning of the first connecting plate, improving assembly convenience.

[0009] Preferably, the inner diameter of the slot gradually increases from top to bottom, the thickness of the snap-fit ​​rib gradually increases from top to bottom, and the lower part of the snap-fit ​​rib is adapted to snap into the slot.

[0010] Preferably, the upper end of the snap-fit ​​rib extends upward to form an abutment rib that connects to the inner wall of the first mating groove, and the outer side end of the abutment rib protrudes from the snap-fit ​​rib and abuts against the bottom surface of the second mating groove.

[0011] Preferably, the lower end of the snap-fit ​​rib extends downward to form a first reinforcing rib that connects to the inner wall of the first mating groove.

[0012] Preferably, a weight-reducing groove is formed on the side of the protrusion facing the first connecting plate.

[0013] Preferably, the bottom surface of the first docking groove is provided with a plurality of connecting holes, and a docking seat is provided on the side of the connecting holes facing the second connecting plate. The bottom surface of the second docking groove is provided with a plurality of connecting posts extending into the connecting holes.

[0014] Preferably, the upper ends of some of the abutment ribs extend to connect with the docking seat, and the two sides of the multiple abutment ribs are provided with second reinforcing ribs for connecting the docking seat.

[0015] Preferably, multiple arc-shaped reinforcing plates are connected between the two second reinforcing ribs. The reinforcing plates pass through multiple abutment ribs, and the outer ends of the reinforcing plates are flush with the abutment ribs and abut against the bottom surface of the second mating groove.

[0016] Preferably, a supporting step is formed between the side of the assembly block facing the second connecting plate and the upper end of the handle, and a locking step is formed between the front and rear sides of the assembly block and the upper end of the handle and the supporting step. The lower end of the second connecting plate is attached to the supporting step, and a mating block adapted to abut against the locking step is constructed on the inner edge.

[0017] A seat, characterized in that it includes the armrest structure described in any one of the above descriptions.

[0018] The present invention adopts the above technical solution and has the following technical effects:

[0019] In the above solution, the handrail includes a handle and a support. The upper end of the handle has an assembly block, and the side wall of the assembly block has multiple radially arranged slots. The support supports the user's arm and includes a first connecting plate and a second connecting plate clamped to both sides of the assembly block. The inner surface of the first connecting plate has radially arranged snap-fit ​​ribs that engage with the slots from the side, effectively preventing displacement between the handle and the support in the front-to-back and radial directions. This significantly increases the connection area between the handle and the support, greatly enhancing the connection strength and preventing loosening. It also allows for quick installation and positioning of the first connecting plate, improving assembly convenience. Furthermore, by designing the slots with an inner diameter that gradually increases from top to bottom, and correspondingly increasing the thickness of the snap-fit ​​ribs to form a tapered fit, the first connecting plate (support) is extremely difficult to detach in the upward direction. The handle and support are then tightly fitted by screwing bolts into bolt holes and bolt seats, further improving the stability of the support. Furthermore, the first and second connecting plates are tightly fitted by bolts into the mating seat and connecting column, making the overall structure of the support more reliable and stable. The engaging step engages with the mating block on the second connecting plate, further limiting the front and rear positions of the handle and the support. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the assembly of the armrests and seat cushion.

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the handrail.

[0022] Figure 3 This is a schematic diagram of the assembly of the handle and the support.

[0023] Figure 4 This is an assembly diagram of the handle and support from another perspective.

[0024] Figure 5This is a schematic diagram showing the arrangement of the slots on the handle assembly block.

[0025] Figure 6 A schematic diagram showing the arrangement of the slots on the handle assembly block from another perspective.

[0026] Figure 7 This is a schematic diagram of screwing bolts into the bolt holes on the assembly block.

[0027] Figure 8 This is a schematic diagram showing the arrangement of the supporting steps on the handle.

[0028] Figure 9 This is a schematic diagram of the assembly of the handle and the first connecting plate.

[0029] Figure 10 This is a three-dimensional structural diagram of the first connecting plate.

[0030] Figure 11 This is a three-dimensional structural diagram of the second connecting plate. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] like Figures 1-11 The illustrated seat armrest structure includes an armrest 1, the lower end of which is connected to the bottom of a seat cushion 2. The armrest 1 includes a curved handle 3 and a support 4 fixed to the upper end of the handle 3. An assembly block 5 is formed upwards at the upper end of the handle 3. Multiple slots 6 are radially formed on one side of the assembly block 5, with the outer ends of the slots 6 extending to the upper surface of the assembly block 5. Protrusions 7 are formed between adjacent slots 6. The support 4 includes a first connecting plate 8 and a second connecting plate 9 clamping the left and right sides of the assembly block 5. The first connecting plate... On the opposite side of the first connecting plate 8 and the second connecting plate 9, a first docking groove 10 and a second docking groove 11 are respectively formed. On the bottom surface of the first docking groove 10, multiple snap-fit ​​ribs 12 are radially constructed and corresponding to snap into multiple slots 6. The upper end of the snap-fit ​​ribs 12 extends out of the upper end of the assembly block 5. A snap-fit ​​opening 13 corresponding to the protrusion 7 is formed between adjacent snap-fit ​​ribs 12. Bolt holes 14 are constructed on some of the protrusions 7. Bolt seats 15 adapted to be inserted into the bolt holes 14 are provided in the snap-fit ​​opening 13. The first connecting plate 8 and the second connecting plate 9 are spliced ​​and fixed together.

[0037] In the above technical solution, the handrail includes a handle and a support. The upper end of the handle is formed with an assembly block, and multiple radially arranged slots are formed on the side wall of the assembly block. The support is used to support the user's arm and includes a first connecting plate and a second connecting plate clamped on both sides of the assembly block. The inner surface of the first connecting plate is provided with radially arranged snap-fit ​​ribs that correspond to snapping into the slots from the side, effectively preventing displacement between the handle and the support in the front-back and radial directions. This greatly increases the connection area between the handle and the support in the handrail, significantly improves the connection strength between the two, avoids the risk of the support falling off due to low connection between the handle and the support, and enables quick installation and positioning of the first connecting plate, improving assembly convenience.

[0038] In addition, the support also includes a flexible pad 100, which is disposed on the outer surface of the first connecting plate to improve comfort.

[0039] Then, the shank and the support are tightened by screwing the bolt 200 into the bolt hole and bolt seat to prevent the first connecting seat from separating from the shank from the side, thus further improving the stability of the support.

[0040] Furthermore, the inner diameter of the slot 6 gradually increases from top to bottom, and the thickness of the snap-fit ​​rib 12 gradually increases from top to bottom, with the lower part of the snap-fit ​​rib 12 fitting into the slot 6. In this technical solution, by designing the slot with an inner diameter that gradually increases from top to bottom, and simultaneously increasing the thickness of the snap-fit ​​rib accordingly, a tapered fit is formed, making it extremely difficult for the first connecting plate (support part) to detach in the upward direction, further improving the assembly stability of both, and facilitating the quick insertion of the snap-fit ​​rib into the slot, thus enhancing assembly convenience.

[0041] Furthermore, the upper end of the snap-fit ​​rib 12 extends upward to form an abutment rib 16 that connects to the inner wall of the first mating groove 10. The outer side end of the abutment rib 16 protrudes from the snap-fit ​​rib 12 and abuts against the bottom surface of the second mating groove 11. In this technical solution, the design of the abutment rib greatly improves the structural strength of the first connecting plate and allows its outer side end to directly abut against the bottom surface of the second mating groove, thereby dispersing the stress load on the support part, effectively improving the load-bearing capacity of the support part, preventing deformation or separation during long-term use, and further enhancing the structural strength and durability of the handrail.

[0042] Furthermore, the lower end of the snap-fit ​​rib 12 extends downward to form a first reinforcing rib 17 that connects to the inner wall of the first mating groove 10. In this technical solution, the first reinforcing rib connects the snap-fit ​​rib to the inner wall of the first mating groove, increasing the root and overall rigidity of the snap-fit ​​rib, preventing the snap-fit ​​rib from bending or breaking due to external forces to a certain extent, and improving the fatigue resistance of the connection part.

[0043] Furthermore, a weight-reducing groove 18 is constructed on the side of the protrusion 7 facing the first connecting plate 8. In this technical solution, without affecting the structural connection strength between the handle and the support, a weight-reducing groove is provided on the protrusion, achieving a lightweight design, reducing the overall weight of the armrest, reducing costs, and reducing the connection load between the armrest and the seat cushion.

[0044] Furthermore, the bottom surface of the first docking groove 10 is provided with multiple connecting holes 19, and a docking seat 20 protrudes from the side of the connecting hole 19 facing the second connecting plate 9. The bottom surface of the second docking groove 11 is provided with multiple connecting posts 21 extending into the connecting holes 19. In this technical solution, the first connecting plate and the second connecting plate are fixedly connected through the cooperation of the connecting holes, docking seats and connecting posts, which has high connection stability, prevents relative displacement between the connecting plates, improves the stability and integrity of the overall structure, makes the assembly more precise and firm, and avoids the risk of falling off caused by fixing by snap-fit ​​connections or other methods.

[0045] Furthermore, the upper ends of some of the abutment ribs 16 extend to connect with the docking seat 20, and second reinforcing ribs 22 are provided on both sides of the multiple abutment ribs 16 for connecting the docking seat 20. In this technical solution, the second reinforcing ribs connect the upper and lower docking seats, forming a stronger support network, increasing the structural strength of the first connecting plate, while also improving the strength of the connection point between the first and second connecting plates, and enhancing the torsional and compressive strength of the handrail.

[0046] Furthermore, multiple arc-shaped reinforcing plates 23 are connected between the second reinforcing ribs 22 on both sides. The reinforcing plates 23 pass through multiple abutment ribs 16, and the outer ends of the reinforcing plates 23 are flush with the abutment ribs 16 and abut against the bottom surface of the second docking groove 11. In this technical solution, the arc-shaped reinforcing plates are connected between the second reinforcing ribs and pass through the abutment ribs to form a cross-support structure, which further improves the structural strength of the first connecting plate. Moreover, its side abuts against the bottom surface of the second docking groove, effectively distributing the load, significantly enhancing the bending resistance of the support, preventing damage caused by excessive local stress, improving the long-term safety of the handrail, and not affecting the disassembly and assembly process.

[0047] Furthermore, a supporting step 24 is formed between the side of the assembly block 5 facing the second connecting plate 9 and the upper end of the handle 3. Engaging steps 25 are formed between the front and rear sides of the assembly block 5, the upper end of the handle 3, and the supporting step 24. The lower end of the second connecting plate 9 is attached to the supporting step 24, and a mating block 26 is constructed on its inner edge to fit and abut against the engaging step 25. In this technical solution, the setting of the supporting step and the engaging step provides a clear positioning and supporting surface, allowing the second connecting plate to be quickly assembled onto the handle to correspond with the first connecting plate. This improves the accuracy and efficiency of assembly, ensures the alignment and stability of the handrail structure, reduces installation errors, and simultaneously provides support and limitation for the second supporting plate.

[0048] This utility model also discloses a seat, including the seat armrest structure described above.

[0049] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A seat armrest structure, comprising an armrest (1), the lower end of which is connected to the bottom of a seat cushion (2); characterized in that: The handrail (1) includes a curved handle (3) and a support (4) fixed to the upper end of the handle (3). An assembly block (5) is formed upward at the upper end of the handle (3). A plurality of slots (6) are radially constructed on one side of the assembly block (5). The outer ends of the slots (6) extend to the upper surface of the assembly block (5), and protrusions (7) are formed between adjacent slots (6). The support (4) includes a first connecting plate (8) and a second connecting plate (9) clamped on the left and right sides of the assembly block (5). The first connecting plate (8) and the second connecting plate (9) are respectively on their opposite sides. A first docking groove (10) and a second docking groove (11) are formed. On the bottom surface of the first docking groove (10), multiple snap-fit ​​ribs (12) are radially constructed and corresponding to snap into multiple slots (6). The upper end of the snap-fit ​​ribs (12) extends out of the upper end of the assembly block (5). A snap-fit ​​opening (13) corresponding to the protrusion (7) is formed between adjacent snap-fit ​​ribs (12). Bolt holes (14) are constructed on some of the protrusions (7). Bolt seats (15) that are adapted to be inserted into the bolt holes (14) are provided in the snap-fit ​​opening (13). The first connecting plate (8) and the second connecting plate (9) are spliced ​​and fixed together.

2. The seat armrest structure according to claim 1, characterized in that: The inner diameter of the slot (6) gradually increases from top to bottom, and the thickness of the snap-fit ​​rib (12) gradually increases from top to bottom. The lower part of the snap-fit ​​rib (12) is adapted to be snapped into the slot (6).

3. The seat armrest structure according to claim 2, characterized in that: The upper end of the snap-fit ​​rib (12) extends upward to form an abutment rib (16) that connects to the inner wall of the first docking groove (10). The outer side of the abutment rib (16) protrudes from the snap-fit ​​rib (12) and abuts against the bottom surface of the second docking groove (11).

4. The seat armrest structure according to claim 3, characterized in that: The lower end of the snap-fit ​​rib (12) extends downward to form a first reinforcing rib (17) that connects to the inner wall of the first docking groove (10).

5. The seat armrest structure according to claim 1, characterized in that: The protrusion (7) has a weight-reducing groove (18) on the side facing the first connecting plate (8).

6. The seat armrest structure according to claim 3, characterized in that: The bottom surface of the first docking groove (10) is provided with multiple connecting holes (19), and the connecting holes (19) protrude from the side facing the second connecting plate (9) and are provided with docking seats (20). The bottom surface of the second docking groove (11) is provided with multiple connecting posts (21) that extend into the connecting holes (19).

7. A seat armrest structure according to claim 6, characterized in that: The upper end of some of the abutment ribs (16) extends to connect with the docking seat (20), and the two sides of the multiple abutment ribs (16) are provided with second reinforcing ribs (22) for connecting the docking seat (20).

8. A seat armrest structure according to claim 7, characterized in that: Multiple arc-shaped reinforcing plates (23) are connected between the two second reinforcing ribs (22). The reinforcing plates (23) pass through multiple abutting ribs (16). The outer ends of the reinforcing plates (23) are flush with the abutting ribs (16) and abut against the bottom surface of the second connecting groove (11).

9. A seat armrest structure according to claim 1, characterized in that: The assembly block (5) forms a support step (24) between the side facing the second connecting plate (9) and the upper end of the handle (3). The front and rear sides of the assembly block (5) form a locking step (25) between the upper end of the handle (3) and the support step (24). The lower end of the second connecting plate (9) is attached to the support step (24), and the inner edge is constructed with a mating block (26) that fits against the locking step (25).

10. A type of seat, characterized in that: Includes a seat armrest structure as described in any one of claims 1 to 9.

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