High-stability leisure chair with height-adjustable backup plate

Abstract

The utility model belongs to the technical field of seat structures, and particularly relates to a high-stability leisure chair with a height-adjustable backup plate. According to the high-stability leisure chair with the height-adjustable backup plate, the main body backup plate, the armrests, the supporting plate, the same-side connecting plate, the movable backup plate unit with the groove, the rear cross rod and the lower cross rod are arranged on the seat plate, so that 1, an inserting structure of the main body backup plate and the movable backup plate unit with the groove is the main body backup plate; therefore, the back plate has the advantages of large size and high strength of the insertion structure, and can ensure that the whole back plate has higher structural stability; and 2, the two support frame bodies which are originally relatively independent can be further reinforced and connected through the rear cross rod and the lower cross rod, so that the leisure chair has relatively high support stability.

Description

Technical Field

[0001] This utility model belongs to the field of seat structure technology, and in particular relates to a highly stable leisure chair with an adjustable backrest height. Background Technology

[0002] Generally speaking, apart from chairs with relatively specific uses such as dining chairs, bar stools, recliners, and office chairs, all other types of chairs can be called lounge chairs. For example, parks and shopping malls use a large number of lounge chairs.

[0003] The structure of a lounge chair is relatively simple, mainly consisting of a seat, backrest, armrests, and legs. It generally doesn't use auxiliary structures like gas springs or lumbar supports. However, lounge chairs also need to possess high structural stability and appropriate comfort adjustments. The former ensures its stability even after prolonged outdoor use and frequent movement, while the latter reflects its comfort and relaxation characteristics. These comfort adjustments include, for example, adjustable backrest height and adjustable seat length.

[0004] The adjustable height of the backrest is generally achieved by dividing the original backrest structure into a fixed part and a movable part, which are plugged into each other. The latter can be adjusted by plugging and unplugging into the former, and then fixed, thus achieving an adjustable and relatively stable movable backrest effect.

[0005] For example, Chinese utility model patent with authorization announcement number CN217792128U and authorization announcement date of 2022.11.15 discloses a highly stable leisure chair, whose structural components include: a seat frame, a seat cushion, a roller frame, a connecting seat, a sliding groove, a support rod, a backrest, a movable groove, a telescopic rod, a spring, a trapezoidal movable block, a trapezoidal fixed block, and rollers.

[0006] The advantages of the leisure chair in this utility model patent are as follows: it can be adjusted as needed, and the adjustment method is simple and quick, saving a lot of time and ensuring its comfort.

[0007] However, in actual use, this lounge chair still has at least the following two shortcomings, which are also the technical problems that this utility model aims to solve:

[0008] First, the seat cushion and backrest connection structure only includes two support rods. This connection structure has the problems of small size and low strength. When the backrest is subjected to long-term backward pressure, the above-mentioned support rod structure is prone to breakage, which is very dangerous.

[0009] Secondly, the chair has two seat frame structures, which lack the necessary lateral connection structure between them, resulting in the two seat frame structures being relatively independent, which is not conducive to the structural stability of the lounge chair.

[0010] Therefore, in summary, there is an urgent need for a new type of leisure chair with a highly stable adjustable backrest structure and a relatively stable supporting frame structure. Utility Model Content

[0011] This utility model provides a highly stable lounge chair with an adjustable backrest height. By incorporating a main backrest, armrests, support plates, a connecting plate on the same side, a slotted movable backrest unit, a rear crossbar, and a lower crossbar on the seat, the following advantages are achieved: 1. The main backrest and the slotted movable backrest unit are connected by the main backrest itself, thus possessing the advantages of large size and high strength, ensuring high structural stability of the entire backrest; 2. The two originally relatively independent support frames can be further reinforced and connected by the rear and lower crossbars, ensuring high support stability for the lounge chair.

[0012] The technical solution adopted by this utility model to solve the above problems is: a high-stability leisure chair with adjustable backrest height, the structure of which includes a seat, a main backrest, armrests, support plates, and connecting plates on the same side, and also includes a slotted movable backrest unit for inserting into the main backrest, a rear crossbar set on the two armrests and used to support the slotted movable backrest unit, and a lower crossbar set on the two support plates on opposite sides.

[0013] A further preferred technical solution is that the slotted movable backrest unit includes a plate body and a mounting groove disposed on the lower surface of the plate body for inserting the main backrest.

[0014] A further preferred technical solution is that the grooved movable backing plate unit further includes a mounting hole provided on the side of the plate body, and a fastening bolt provided on the mounting hole and used to clamp the main backing plate.

[0015] A further preferred technical solution is that: a positioning groove is provided on the side of the main body back plate; and the number of mounting holes on one side is 3-5.

[0016] A further preferred technical solution is that the handrail is also provided with a connection hole for installing the fastening bolt.

[0017] A further preferred technical solution is that a reinforcing cover plate for covering the mounting hole is provided between the handrail and the support plate behind it.

[0018] A further preferred technical solution is that the grooved movable backing plate unit further includes a connecting groove disposed on the upper surface and two sides of the plate body and used for setting the mounting hole, and a locking strip disposed on the connecting groove and used for covering the mounting hole.

[0019] A further preferred technical solution is that the slotted movable backing plate unit further includes a storage hole disposed on the communicating groove and used to insert the folded section of the locking strip.

[0020] A further preferred technical solution is that the storage hole is disposed on the upper surface of the plate.

[0021] A further preferred technical solution is that the grooved movable backing plate unit also includes a rear opening for lifting provided on the plate body. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram showing the position of the positioning groove in this utility model.

[0024] Figure 3 This is a schematic diagram showing the positions of the rear crossbar, the lower crossbar, and the reinforcing cover plate in this utility model.

[0025] Figure 4 This is a schematic diagram of the position and structure of the slotted movable backing plate unit in this utility model.

[0026] Figure 5 This is a schematic diagram showing the positions of the connecting groove and the engaging strip in this utility model.

[0027] Figure 6 This is a schematic diagram illustrating the usage of the storage hole in this utility model.

[0028] Figure 7 This is a schematic diagram showing the position and shape of the storage hole and the rear opening for lifting in this utility model.

[0029] The meanings of the markings in the diagram are as follows:

[0030] 11. Seat plate, 12. Main backrest, 13. Armrest, 14. Support plate, 15. Connecting plate on the same side, 16. Seat plate connecting groove, 17. Connecting bolt, 18. Support plate mounting hole;

[0031] 1. Grooved movable backrest unit; 2. Rear crossbar; 3. Lower crossbar; 4. Positioning groove; 5. Connecting hole; 6. Reinforcing cover plate.

[0032] Plate 101, mounting groove 102, mounting hole 103, fastening bolt 104, connecting groove 105, locking strip 106, storage hole 107, rear opening for lifting 108. Detailed Implementation

[0033] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0034] As attached Figure 1-7 As shown, a high-stability lounge chair with an adjustable backrest height includes a seat 11, a main backrest 12, armrests 13, support plates 14, and a connecting plate 15 on the same side. It also includes a slotted movable backrest unit 1 for inserting into the main backrest 12, a rear crossbar 2 disposed on the two armrests 13 and used to support the slotted movable backrest unit 1, and a lower crossbar 3 disposed on the two support plates 14 on opposite sides.

[0035] In this embodiment, the high stability of the lounge chair is mainly reflected in the following three aspects:

[0036] First, the adjustable height of the backrest is achieved through the plug-in structure of the main backrest 12 and the slotted movable backrest unit 1. The direct plug-in part of this structure is the main backrest 12 itself and the slotted movable backrest unit 1 itself. Therefore, it has the advantages of large plug-in structure size and high strength, which can ensure that the entire movable backrest structure has high structural stability.

[0037] Secondly, the armrest 13, two support plates 14 and one connecting plate 15 on the same side together form the support frame of the lounge chair. The lounge chair has a total of two such support frame structures. The rear crossbar 2 and the lower crossbar 3 can further connect the two such support frame structures into a whole, ensuring that the lounge chair has a more stable support frame structure.

[0038] Third, the rear crossbar 2 also serves to support the slotted movable backrest unit 1, and the support effect remains effective throughout the entire lifting and lowering process.

[0039] The seat 11 and the main backrest 12 are integrally formed or screwed together. The side of the chair closest to the main backrest 12 is the rear, and the opposite side is the front. The armrest 13 is integrally formed with one of the front support plates 14 and fixed to the other, the rear support plate 14. The connecting plate 15 on the same side is fixed to both the front and rear support plates 14. There are two connecting bolts 17 on each side, which connect the mounting holes 18 of the support plates and the connecting grooves 16 of the seat, ensuring that the support frame and the main body of the chair are effectively fixed.

[0040] On the other hand, the grooved movable backrest unit 1 is generally rectangular in shape. It is inserted downwards into the main backrest 12 and its vertical height is fully fixed, so that the dual advantages of adjustable backrest height and high overall structural stability of the backrest can be achieved.

[0041] Furthermore, the rear crossbar 2 is integrally formed with the two armrests 13, and it always supports the grooved movable backrest unit 1, even if the height of the latter is not fixed. The number of the lower crossbars 3 is two, which are respectively connected to the two front support plates 14 and the two rear support plates 14.

[0042] Therefore, the chair structure can be identified as a highly stable lounge chair with an adjustable backrest height.

[0043] The slotted movable backrest unit 1 includes a plate 101 and a mounting groove 102 disposed on the lower surface of the plate 101 for inserting the main backrest 12.

[0044] In this embodiment, the plate 101, seat 11, main backrest 12, armrest 13, and support plate 14 can all be equipped with existing chamfered structures and soft-pack materials as needed. The groove size and shape of the mounting groove 102 correspond to the main backrest 12, so that the plate 101 can only move vertically or tilted vertically on the main backrest 12, and is not easy to loosen.

[0045] One way to maintain the desired height of the plate 101 after adjustment is through a proper interference fit between the mounting groove 102 and the plate 101. On the other hand, during normal use, the direction of pressure on the plate 101 does not completely coincide with the insertion direction of the plate 101. Therefore, the insertion structure is not the main stress-bearing location for the plate support function, and the fixing strength generated by the interference fit is sufficient.

[0046] Correspondingly, one of the necessary conditions for the high stability of this lounge chair is that the seat 11, the main backrest 12, and the grooved movable backrest unit 1 all have sufficient material strength. For example, the main materials of the above three components can all be selected from engineering plastics with relatively high strength.

[0047] The grooved movable backing plate unit 1 also includes a mounting hole 103 provided on the side of the plate 101, and a fastening bolt 104 provided on the mounting hole 103 for clamping the main backing plate 12.

[0048] In this embodiment, the fastening method in which the fastening bolt 104 screws into the mounting hole 103 and clamps the main body back plate 12 inward can be used as a replacement and supplement to the above-mentioned interference fit method.

[0049] Correspondingly, the front of the plate 101 is used to support the passenger, its back is supported by the rear crossbar 2, and both sides are provided with the fastening bolts 104. Its lower surface is used to open the mounting groove 102, and the two ends of its upper surface can be provided with a comfort chamfer structure as needed.

[0050] The main body back plate 12 is also provided with a positioning groove 4 on its side; the number of mounting holes 103 on one side is 3-5.

[0051] In this embodiment, the positioning groove 4 is used to screw in the fastening bolt 104. Whether or not it has its own threads is optional. Its function is to upgrade the frictional clamping force originally generated by the fastening bolt 104 on the main body plate 12 to a combination of clamping and insertion. Although this method has the limitation of only one level of adjustment, it can greatly improve the height stability of the plate 101 after adjustment, making it less likely to fall or drop out.

[0052] The handrail 13 is also provided with a connection hole 5 for installing the fastening bolt 104.

[0053] In this embodiment, another function of the fastening bolt 104 is to reinforce the armrest 13 together with it. That is, the fastening bolt 104 passes through the connecting hole 5, the mounting hole 103 and the positioning groove 4 in sequence, connecting the armrest 13, the plate 101 and the main backrest 12 into a whole, which greatly improves the structural stability of the lounge chair.

[0054] Originally, the armrest 13 and the backrest were relatively independent, which was detrimental to the structural stability of the lounge chair. Accordingly, the connecting hole 5 is always aligned with the positioning groove 4, while the mounting hole 103 can be aligned with either of the above two, and the connecting hole 5 can be either threaded or not.

[0055] A reinforcing cover plate 6 for covering the mounting hole 103 is also provided between the handrail 13 and the support plate 14 behind it.

[0056] In this embodiment, the reinforcing cover plate 6 has at least the following two functions:

[0057] First, the connection between the armrest 13 and the rear support plate 14 is reinforced to improve the structural stability of the support frame of the lounge chair.

[0058] Secondly, the mounting holes 103, which may be located below the armrest 13 and were originally directly exposed, are blocked and covered to prevent a large amount of debris from entering the holes and to improve the overall appearance of the lounge chair.

[0059] The grooved movable backing plate unit 1 further includes a connecting groove 105 disposed on the upper surface and two sides of the plate body 101 and used for setting the mounting hole 103, and a locking strip 106 disposed on the connecting groove 105 and used for covering the mounting hole 103.

[0060] In this embodiment, the mounting hole 103 is located on the central side of the connecting groove 105, and the groove width of the latter is greater than the head size of the fastening bolt 104, so that the fastening bolt 104 can be fully screwed into the connecting groove 105.

[0061] The locking strip 106 is made of ordinary elastic rubber. Its function is to block and cover the mounting hole 103 that may be located above the handrail 13 and was originally directly exposed, so as to prevent a large amount of debris from entering the hole. Its function is similar to that of the reinforcing cover plate 6.

[0062] On the other hand, the locking strip 106 can also serve as a decorative strip or trademark strip for the lounge chair.

[0063] The slotted movable backrest unit 1 also includes a storage hole 107 disposed on the connecting groove 105 and used to insert the folded section of the locking strip 106.

[0064] In this embodiment, since the fastening bolts 104 need to be paired with one of the multiple mounting holes 103 at different heights, the number of mounting holes 103 that are originally directly exposed above the handrail 13 is variable, and therefore the actual length required for the locking strip 106 is also variable.

[0065] Generally, the higher the mounting hole 103 of the fastening bolt 104, the smaller the actual length required for the locking strip 106, and vice versa. The function of the receiving hole 107 is to allow the folded portion of the locking strip 106 to be inserted, so that it still fits into the connecting groove 105 while having a shorter, adjustable effective length. See the attached diagram for details. Figure 6 .

[0066] The storage hole 107 is provided on the upper surface of the plate 101.

[0067] In this embodiment, the connecting groove 105 can be divided into the following three sections according to its position on the plate 101: one section on the upper surface of the plate 101, and one section on each of the two sides of the plate 101.

[0068] If the receiving hole 107 is located in the connecting groove 105 portion of the latter two, the inwardly protruding, folded locking strip 106 will block the main body back plate 12 inserted into the mounting groove 102 relatively earlier, thereby affecting and limiting the optional insertion depth of the main body back plate 12, which is disadvantageous.

[0069] Therefore, the storage hole 107 is located on the upper surface of the plate 101, making it less likely for the inwardly protruding and folded area on the locking strip 106 to obstruct the main body backing plate 12. See the attached diagram for details. Figure 6 and 7 .

[0070] The grooved movable backrest unit 1 also includes a rear opening 108 for lifting provided on the plate body 101.

[0071] In this embodiment, the rear opening 108 for lifting is positioned relatively high, so that even when the main body back plate 12 is at its maximum insertion depth in the mounting groove 102, the former will not block the rear opening 108 for lifting, ensuring that the lifting force gripping function at the opening is always effective.

[0072] On the other hand, even if the main backrest 12 has blocked the rear opening 108 for lifting, the latter's function of providing a force application position is still effective, because the rear opening 108 for lifting has a certain opening depth. At this time, the hollow plate 101 still has a certain wall thickness. By inserting four fingers into this position, the lounge chair can be lifted relatively conveniently and comfortably.

[0073] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings. However, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of this utility model. These are non-inventive modifications and are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. A highly stable lounge chair with an adjustable backrest height, comprising a seat (11), a main backrest (12), armrests (13), a support plate (14), and a connecting plate (15) on the same side, characterized in that: It also includes a slotted movable backrest unit (1) for inserting into the main backrest (12), a rear crossbar (2) disposed on the two armrests (13) and used to support the slotted movable backrest unit (1), and a lower crossbar (3) disposed on the two support plates (14) on opposite sides.

2. The high-stability lounge chair with adjustable backrest height according to claim 1, characterized in that: The slotted movable backrest unit (1) includes a plate (101) and a mounting groove (102) disposed on the lower surface of the plate (101) for inserting the main backrest (12).

3. A highly stable lounge chair with an adjustable backrest height according to claim 2, characterized in that: The grooved movable backing plate unit (1) also includes a mounting hole (103) provided on the side of the plate (101) and a fastening bolt (104) provided on the mounting hole (103) for clamping the main backing plate (12).

4. A highly stable lounge chair with an adjustable backrest height according to claim 3, characterized in that: The main body back plate (12) is also provided with a positioning groove (4) on its side; the number of mounting holes (103) on one side is 3-5.

5. A highly stable lounge chair with an adjustable backrest height according to claim 3, characterized in that: The handrail (13) is also provided with a connection hole (5) for installing the fastening bolt (104).

6. A highly stable lounge chair with an adjustable backrest height according to claim 4, characterized in that: A reinforcing cover plate (6) for covering the mounting hole (103) is also provided between the handrail (13) and the support plate (14) behind it.

7. A highly stable lounge chair with an adjustable backrest height according to claim 4, characterized in that: The grooved movable backing plate unit (1) further includes a connecting groove (105) disposed on the upper surface and two sides of the plate body (101) and used to provide the mounting hole (103), and a locking strip (106) disposed on the connecting groove (105) and used to cover the mounting hole (103).

8. A high-stability lounge chair with adjustable backrest height according to claim 7, characterized in that: The slotted movable backrest unit (1) also includes a storage hole (107) disposed on the connecting groove (105) and used to insert the folded section of the locking strip (106).

9. A highly stable lounge chair with an adjustable backrest height according to claim 8, characterized in that: The storage hole (107) is provided on the upper surface of the plate (101).

10. A highly stable lounge chair with an adjustable backrest height according to claim 2, characterized in that: The grooved movable backrest unit (1) also includes a rear opening (108) for lifting provided on the plate (101).

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