Seat back cushion

Abstract

The utility model relates to a seat back cushion which comprises a backrest and a headrest, the headrest is arranged on the back side of the backrest in a sliding mode through a headrest rod, and the seat back cushion is characterized in that a fixing rod is arranged on the back side face of the backrest, a sliding cavity is formed in the fixing rod in the vertical direction of the fixing rod, the upper portion and the lower portion of the sliding cavity are open, and the headrest rod is arranged in the sliding cavity in a sliding mode. A gear structure is arranged between the fixing rod and the headrest rod to adjust the height of the headrest rod, the headrest is hinged to the upper end of the headrest rod, the headrest has a storage state and a use state, when the headrest is in the use state, the headrest is turned forwards to be consistent with the backrest in orientation, and when the headrest is in the storage state, the headrest is turned backwards to be opposite to the backrest in orientation. The limiting piece is used for limiting the headrest rod so as to prevent the headrest rod from being separated from the fixed rod. By the adoption of the technical scheme, the seat back cushion can be rapidly folded and stored behind the backrest when the function of a headrest is not needed, and the seat back cushion is simple in structure, rapid to operate in the storing and unfolding process and extremely high in practical value.

Description

Technical Field

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

[0002] Currently, some student nap chairs, reclining chairs, and office chairs have headrests on the backrests for users to lean on. However, the headrests in the existing technology cannot be folded and stored through a simple structure and operation; they can only be adjusted in height, which is not very practical. The headrests can only be disassembled when not in use. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides a seat pillow that can be quickly folded and stored behind the backrest when the headrest function is not needed. It has a simple structure, and the folding and unfolding process is quick and easy, making it highly practical.

[0004] The technical solution of this utility model is as follows: A seat cushion includes a backrest and a headrest. The headrest is slidably mounted on the backrest via a headrest rod. A fixing rod is provided on the backrest side. A sliding cavity is provided on the fixing rod along its vertical direction. The sliding cavity is open at the top and bottom. The headrest rod is slidably mounted in the sliding cavity. A stop structure is provided between the fixing rod and the headrest rod to adjust the height of the headrest rod. The headrest is hinged to the upper end of the headrest rod. The headrest has a storage state and a use state. When in use, the headrest flips forward to face the backrest. When in storage, the headrest flips backward to face the opposite direction of the backrest. It also includes a limiting member to limit the headrest rod to prevent it from detaching from the fixing rod.

[0005] Using the above technical solution, the headrest can be adjusted in height and stored without disassembly. When storage is needed, the headrest is flipped backward around the headrest rod so that the headrest faces the opposite direction to the backrest, and the headrest rod is slid downward until the top of the headrest is level with or lower than the top of the backrest. The headrest rod is then locked by a limiting component to achieve storage. When in use, the headrest rod is pulled upward, and the headrest flips forward around the headrest rod. The height of the headrest can be adjusted through the gear mechanism to suit different heights. This prevents the headrest rod from retracting into the fixed rod. The headrest can also be rotated around the headrest rod to adjust different usage angles.

[0006] Further features of this invention: The limiting member is provided with a limiting boss, and the inner sidewall of the sliding cavity is provided with a limiting surface. When the limiting boss abuts against the limiting surface, the headrest rod is in the highest position. The limiting member includes a limiting member and a locking groove. The limiting member is provided with a locking block, and the lower end of the headrest rod is provided with the locking groove. The locking block is inserted into the locking groove to realize the connection between the headrest rod and the limiting member.

[0007] With the above-mentioned further configuration, the limiting member slides synchronously with the headrest rod, and the limiting member can prevent the headrest rod from detaching from the fixed rod.

[0008] A further feature of this invention is that the locking block is located on the outer side of the limiting member, the lower end of the headrest rod is open so that the limiting member can be inserted into the headrest rod, and the upper end of the locking block is provided with an inclined surface that slopes from top to bottom.

[0009] The above-mentioned further design facilitates the connection between the headrest rod and the limiting component.

[0010] A further improvement of this utility model is as follows: the gear structure includes a gear pin and a gear groove, the upper end of the fixing rod is provided with a receiving cavity, the gear pin is located in the receiving cavity and partially exposed outside the receiving cavity, and the headrest rod is provided with a plurality of the aforementioned gear grooves along its vertical direction, the gear pin and the gear grooves cooperate to position the headrest rod.

[0011] With the above-mentioned further settings, the headrest height can be adjusted according to the user's height. After adjusting to a suitable height, the headrest rod is positioned by the cooperation of the stop pin and the stop groove, so as to fix it at the current height and prevent the headrest rod from sliding into the sliding cavity. The operation is convenient and can be carried out with one hand.

[0012] A further feature of this invention is that: a connecting plate is provided at the upper end of the fixing rod, the connecting plate is connected to the backrest by fasteners, a limiting plate is connected to the front side of the connecting plate, and an installation groove is provided on the backrest, with the limiting plate located in the installation groove.

[0013] With the above-mentioned further design, the fixing rod and the backrest are detachable, and the headrest can be installed according to the usage needs. The limiting plate is located in the mounting groove to restrict the forward and backward sliding of the fixing rod.

[0014] A further feature of this invention is as follows: a connector is provided on the rear side of the backrest, the limiting member is located above the connector, the connector is provided with a first connecting hole, the lower end of the fixing rod is provided with a second connecting hole, and screws are inserted into the two connecting holes to achieve the connection between the fixing rod and the backrest.

[0015] With the above-mentioned further design, the structure is simple and easy to install. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the seat according to a specific embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the headrest in use according to a specific embodiment of the present invention;

[0018] Figure 3This is a schematic diagram of a specific embodiment of the present invention, showing the fixing rod installed on the backrest side;

[0019] Figure 4 This is a schematic diagram of the rear side of a specific embodiment of the present utility model;

[0020] Figure 5 This is a cross-sectional view of the headrest in use according to a specific embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the headrest and headrest rod according to a specific embodiment of the present utility model;

[0022] Figure 7 This is a schematic diagram of the headrest in a stowed state according to a specific embodiment of the present invention;

[0023] Figure 8 This is a cross-sectional view of the headrest in its stowed state according to a specific embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the limiting component in a specific embodiment of the present utility model.

[0025] In the diagram, 1 is the backrest; 11 is the mounting slot; 12 is the connector; 121 is the first connecting hole; 2 is the headrest; 21 is the connecting block; 3 is the headrest rod; 31 is the locking groove; 4 is the fixing rod; 41 is the sliding cavity; 411 is the limiting surface; 42 is the receiving cavity; 43 is the connecting plate; 431 is the groove; 44 is the limiting plate; 45 is the second connecting hole; 5 is the limiting component; 51 is the locking block; 52 is the inclined surface; 53 is the limiting boss; 61 is the stop pin; 62 is the stop groove. Detailed Implementation

[0026] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] It should be noted that all directional indicators (such as up, down, forward, backward, etc.) in the description of this utility model are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] like Figure 1-9 As shown, a seat cushion includes a backrest 1 and a headrest 2. The headrest 2 is slidably mounted on the rear side of the backrest 1 via a headrest rod 3. A fixing rod 4 is provided on the rear side of the backrest 1. A sliding cavity 41 is provided on the fixing rod 4 along its vertical direction. The sliding cavity 41 is open at the top and bottom. The headrest rod 3 is slidably mounted in the sliding cavity 41. A stop structure is provided between the fixing rod 4 and the headrest rod 3 to adjust the height of the headrest rod 3. The headrest 2 is hinged to the upper end of the headrest rod 3. The headrest 2 has a storage state and a use state. When in use, the headrest 2 flips forward to face the backrest 1. When in storage, the headrest 2 flips backward to face the opposite direction of the backrest 1. It also includes a limiting member 5 to limit the headrest rod 3 to prevent the headrest from falling. When the headrest rod 3 detaches from the fixed rod 4, the limiting component 5 can limit its movement when the headrest rod 3 slides to its highest position. The headrest 2 can be adjusted in height and stored without disassembly. When storage is required, the headrest 2 is flipped backward around the headrest rod 3 so that the headrest 2 faces the opposite direction to the backrest 1. The headrest rod 3 is then slid downward until the top of the headrest 2 is level with or lower than the top of the backrest 1. The limiting component locks the headrest rod 3 in place, thus achieving storage. When in use, the headrest rod 3 is pulled upward, and the headrest 2 flips forward around the headrest rod 3. The height of the headrest 2 can be adjusted through the gear mechanism to suit different heights. This prevents the headrest rod 3 from retracting into the fixed rod 4. The headrest 2 can also rotate around the headrest rod 3 to adjust different usage angles.

[0031] The limiting member 5 is provided with a limiting boss 53, and the inner side wall of the sliding cavity 41 is provided with a limiting surface 411. When the limiting boss 53 abuts against the limiting surface 411, the headrest rod 3 can no longer be pulled upward. The limiting member 5 is provided with a locking block 51, and the lower end of the headrest rod 3 is provided with a locking groove 31. The locking block 51 is inserted into the locking groove 31 to realize the connection between the headrest rod 3 and the limiting member 5. The locking block 51 is provided on the outer side of the limiting member 5. The lower end of the headrest rod 3 is open so that the limiting member 5 can be inserted into the headrest rod 3. The upper end of the locking block 51 is provided with an inclined surface 52 that slopes from top to bottom, which facilitates the connection between the headrest rod 3 and the limiting member 5 and makes the structure stable.

[0032] The gear mechanism includes a gear pin 61 and a gear groove 62. The upper end of the fixing rod 4 is provided with a receiving cavity 42. The gear pin 61 is located inside the receiving cavity 42 and partially exposed outside the receiving cavity 42. The headrest rod 3 is provided with several gear grooves 62 along its vertical direction. The gear pin 61 and the gear groove 62 cooperate to position the headrest rod 3. The height of the headrest 2 can be adjusted according to the user's height. After adjusting to a suitable height, the headrest rod 3 is positioned by the cooperation of the gear pin 61 and the gear groove 62, fixing it at the current height and preventing the headrest rod 3 from sliding into the sliding cavity 41. The operation is convenient and can be performed with one hand.

[0033] The upper end of the fixing rod 4 is provided with a connecting plate 43, which is connected to the backrest 1 by fasteners. The front side of the connecting plate 43 is connected to a limiting plate 44. The backrest 1 is provided with a mounting groove 11, and the limiting plate 44 is located in the mounting groove 11. The fixing rod 4 and the backrest 1 are detachable, and the headrest 2 can be installed according to usage needs. The limiting plate 44 located in the mounting groove 11 can restrict the forward and backward sliding of the fixing rod 4. The connecting plate 43 is provided with a groove 431, and the sliding cavity 41 communicates with the groove 431. The headrest 2 is provided with a connecting block 21. When the headrest 2 is in the storage state, the connecting block 21 is located in the groove 431, which is compact and avoids occupying a large space. The rear side of the backrest 1 is provided with a connector 12, which is provided with a first connecting hole 121. The lower end of the fixing rod 4 is provided with a second connecting hole 45. Screws are inserted into the two connecting holes to connect the fixing rod 4 and the backrest 1. The structure is simple and easy to install.

Claims

1. A seat headrest comprising a backrest (1) and a headrest (2) which is slidably provided on the rear side of the backrest (1) by a headrest rod (3), characterized in that, The backrest (1) is provided with a fixing rod (4) on its rear side. The fixing rod (4) is provided with a sliding cavity (41) along its vertical direction. The sliding cavity (41) is open at the top and bottom. The headrest rod (3) is slidably disposed in the sliding cavity (41). A stop structure is provided between the fixing rod (4) and the headrest rod (3) to adjust the height of the headrest rod (3). The headrest (2) is hinged to the upper end of the headrest rod (3). The headrest (2) has a storage state and a use state. When it is in use state, the headrest (2) flips forward to face the backrest (1). When it is in storage state, the headrest (2) flips backward to face the backrest (1). It also includes a limiting member (5) connected to the headrest rod (3) to limit the headrest rod (3) to prevent the headrest rod (3) from detaching from the fixing rod (4).

2. The seat pillow of claim 1, wherein The limiting member (5) is provided with a limiting boss (53), and the inner wall of the sliding cavity (41) is provided with a limiting surface (411). When the limiting boss (53) and the limiting surface (411) are in contact, the headrest rod (3) is in the highest position.

3. The seat pillow according to claim 1 or 2, characterized in that The limiting member (5) is provided with a locking block (51), and the lower end of the headrest rod (3) is provided with a locking groove (31). The locking block (51) is inserted into the locking groove (31) to realize the connection between the limiting member (5) and the headrest rod (3).

4. The seat pillow of claim 3, wherein The locking block (51) is located on the outer side of the limiting member (5), and the lower end of the headrest rod (3) is open so that the limiting member (5) can be inserted into the headrest rod (3). The upper end of the locking block (51) is provided with an inclined surface (52) that slopes from top to bottom.

5. The seat pillow according to claim 1 or 2, characterized in that, The gear structure includes a gear pin (61) and a gear groove (62). The upper end of the fixing rod (4) is provided with a receiving cavity (42). The gear pin (61) is located inside the receiving cavity (42) and partially exposed outside the receiving cavity (42). The headrest rod (3) is provided with a plurality of the aforementioned gear grooves (62) along its vertical direction. The gear pin (61) and the gear grooves (62) cooperate to position the headrest rod (3).

6. The seat pillow according to claim 1 or 2, characterized in that, The upper end of the fixing rod (4) is provided with a connecting plate (43), which is connected to the backrest (1) by fasteners. A limiting plate (44) is connected to the front side of the connecting plate (43). The backrest (1) is provided with an installation through groove (11), and the limiting plate (44) is located in the installation through groove (11).

7. The seat pillow according to claim 1 or 2, characterized in that, The backrest (1) has a connector (12) on its rear side. The connector (12) has a first connecting hole (121) and the lower end of the fixing rod (4) has a second connecting hole (45). Screws are inserted into the two connecting holes to connect the fixing rod (4) and the backrest (1).

8. The seat pillow of claim 6, wherein, The connecting plate (43) has a groove (431) and the sliding cavity (41) communicates with the groove (431). The headrest (2) has a connecting block (21). When the headrest (2) is in the storage state, the connecting block (21) is located in the groove (431).

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