Universal joint seat with rocker arm

Abstract

The utility model relates to a universal joint chair with a rocker arm, which belongs to the technical field of office or household chairs and comprises a main chair surface, a base and a movable chair surface, the main chair surface is connected with the movable chair surface through turnover shafts and hinges, the turnover shafts on two sides are connected with a connecting shaft through universal joints, the connecting shaft is fixedly provided with the rocker arm, and the rocker arm is fixedly connected with the base. The rocker arm is connected with an elastic pulling piece capable of adjusting pre-tightening elastic force. The outer end of the pull rod is connected with an adjusting knob, the connecting rod is sleeved with a compressed spring, one end of the compressed spring makes contact with the adjusting knob, and the other end of the compressed spring makes contact with the base. According to the universal joint seat with the rocker arm, the pre-tightening elasticity can be adjusted through the elastic pull piece, so that the seat can adapt to individual signs of different users. And meanwhile, the ratchet wheel and the pawl are matched for use, so that the position of the connecting shaft can be locked. Furthermore, through adjustment of a controllable air spring, any angle position of the connecting shaft can be locked, the degree of freedom is higher, and the comfort performance is higher.

Description

Technical Field

[0001] The utility model relates to a universal joint seat with a rocker arm, belonging to the technical field of office or home seats. Background Art

[0002] With the upgrading of consumption and the extension of working hours, more and more working groups and consumers have put forward diversified requirements for the comfort and multifunctionality of seats. Therefore, our company has developed a universal joint seat. The main seat surface and the left and right flip seat surfaces are connected by a flip shaft and a hinge. The flip shafts on both sides are connected to the connecting shaft through a universal joint. The flip shaft is equipped with a torsion spring, which has a simple structure and is easy to adjust. However, the elastic coefficient of the elastic part of the original universal joint seat flip shaft is fixed and cannot be adjusted, which cannot meet the personalized needs of different users. Utility Model Content

[0003] The utility model provides a universal joint seat with a rocker arm, which solves the problem that the elastic coefficient of the elastic part of the current universal joint seat turning shaft is fixed and cannot be adjusted, and cannot adapt to the personalized needs of different users.

[0004] The utility model relates to a universal joint seat with a rocker arm, comprising a main seat surface, a base and a movable seat surface, wherein the main seat surface and the movable seat surface are connected via a tilting shaft and a hinge, the tilting shafts on both sides are connected to a connecting shaft via a universal joint, the connecting shaft is fixedly mounted with a rocker arm, and the rocker arm is connected with an elastic puller capable of adjusting the pre-tightening elastic force.

[0005] As a preferred embodiment, the elastic pull member includes a pull rod rotatably mounted on the outer end of the rocker arm, the outer end of the pull rod is connected to an adjustment knob, a compression spring is sleeved on the outside of the pull rod, one end of the compression spring contacts the adjustment knob, and the other end of the compression spring contacts the base. The compression spring pressure is pre-adjusted by adjusting the knob, so that the seat can adapt to the individual physical characteristics of different users.

[0006] As a preferred embodiment, the hinge includes a fixed hinge fixed to the main seat surface and a movable hinge fixed to the movable seat surface. The movable hinge is installed to rotate concentrically with the fixed hinge through a flip axis, so that the movable seat surface can be flipped better.

[0007] As a preferred embodiment, a ratchet is fixedly mounted on the connecting shaft, and a pawl for locking the ratchet is mounted next to the ratchet. The ratchet and the pawl are used in coordination to lock the position of the connecting shaft.

[0008] As a preferred embodiment, the connecting shaft is rotatably mounted on the base, and the pawl is rotatably mounted on the base.

[0009] As a preferred embodiment, a ratchet switch is fixed to the outer end of the pawl to facilitate the control of locking and opening of the pawl.

[0010] As a preferred embodiment, the elastic puller is a gas spring. The size of the preload force can be adjusted directly by replacing gas springs with different elastic forces.

[0011] As a preferred embodiment, a controllable gas spring is installed between the rocker arm and the base. By adjusting the controllable gas spring, the connecting shaft can be locked at any angle position, which has a higher degree of freedom and a stronger comfort performance.

[0012] As a preferred embodiment, an electric push rod is installed between the rocker arm and the base, and intelligent control can be achieved through the control of the electric push rod.

[0013] The utility model has the following beneficial effects:

[0014] The universal joint seat with a rocker arm can adjust the preload force through an elastic puller, so that the seat can adapt to the individual physical characteristics of different users and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a side structural schematic diagram of the utility model;

[0017] Figure 3 It is a partial three-dimensional structural schematic diagram of the utility model;

[0018] In the figure: 1. movable seat, 2. main seat, 3. base, 4. connecting shaft, 5. universal joint, 6. rocker arm, 7. pull rod, 8. adjustment knob, 9. compression spring, 10. movable hinge, 11. controllable gas spring, 12. ratchet switch, 13. flip shaft, 14. ratchet, 15. pawl. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with embodiments.

[0020] Embodiment 1, as Figures 1 to 3 As shown, the utility model is a universal joint seat with a rocker arm, comprising a main seat surface 2, a base 3 and a movable seat surface 1, the main seat surface 2 and the movable seat surface 1 are connected by a flip shaft 13 and a hinge, the flip shafts 13 on both sides are connected to the connecting shaft 4 through a universal joint 5, the connecting shaft 4 is fixedly installed with a rocker arm 6, and the rocker arm 6 is connected to an elastic puller that can adjust the preload elastic force.

[0021] Before working, the pre-tightening force of the elastic puller can be adjusted according to the needs of the user. During working: when sitting normally, there is no inclination angle between the main seat surface 2 and the movable seat surface 1. When the user sits on the seat, when the movable seat surface 1 needs to change its angle position, the user presses down the movable seat surface 1. The flipping of the movable seat surface 1 will drive the flip shaft 13 to rotate, and the connecting shaft 4 will rotate through the universal joint 5. The connecting shaft 4 drives the rocker arm 6 to overcome the pre-tightening force of the elastic puller to rotate. When it is adjusted to a comfortable angle, the sitting posture can be maintained.

[0022] Embodiment 2, based on embodiment 1, the elastic puller comprises a pull rod 7 rotatably mounted on the outer end of the rocker arm 6, the outer end of the pull rod 7 is threadedly connected with an adjusting knob 8, a compression spring 9 is sleeved on the outside of the pull rod 7, one end of the compression spring 9 contacts the adjusting knob 8, and the other end of the compression spring 9 contacts the base 3. Before use, the adjusting knob 8 can be rotated according to the individual physical characteristics of the user to adjust the pre-compression force of the compression spring 9.

[0023] The hinge includes a fixed hinge fixed on the main seat surface 2 and a movable hinge 10 fixed on the movable seat surface 1, and the movable hinge 10 is installed to rotate concentrically with the fixed hinge through a flip shaft 13. The connecting shaft 4 and the rocker arm 6 are fixedly installed through a knurled pin shaft.

[0024] Embodiment 3, on the basis of embodiment 1 or 2, a ratchet 14 is fixedly mounted on the connecting shaft 4, and a pawl 15 for locking the ratchet 14 is mounted next to the ratchet 14. The ratchet 14 and the pawl 15 are used in combination to lock the position of the connecting shaft 4.

[0025] The connecting shaft 4 is rotatably mounted on the base 3 , and the ratchet 15 is rotatably mounted on the base 3 .

[0026] A ratchet switch 12 is fixed to the outer end of the pawl 15 .

[0027] Embodiment 4, based on embodiment 1, the elastic puller is a gas spring. The preload force can be adjusted by replacing different gas springs.

[0028] Embodiment 5, on the basis of embodiment 1 or 2, a controllable gas spring 11 is installed between the rocker arm 6 and the base 3. One end of the controllable gas spring 11 is hinged to the rocker arm 6, and the other end of the controllable gas spring 11 is hinged to the base 3.

[0029] Embodiment 6, on the basis of embodiment 1 or 2, an electric push rod is installed between the rocker arm 6 and the base 3. One end of the electric push rod is hinged to the rocker arm 6, and the other end of the electric push rod is hinged to the base 3.

[0030] This seat is not limited to use in the field of office or home seats, but can also be used in the fields of elderly cars, airplane seats, etc.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0032] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. A universal joint seat with a rocker arm, comprising a main seat surface (2), a base (3) and a movable seat surface (1), wherein the main seat surface (2) and the movable seat surface (1) are connected via a tilting shaft (13) and a hinge, and the tilting shafts (13) on both sides are connected to a connecting shaft (4) via a universal joint (5), characterized in that: A rocker arm (6) is fixedly mounted on the connecting shaft (4), and the rocker arm (6) is connected to an elastic puller capable of adjusting the pre-tightening elastic force.

2. A universal joint seat with a rocker arm according to claim 1, characterized in that: The elastic pull member comprises a pull rod (7) rotatably mounted on the outer end of the rocker arm (6), the outer end of the pull rod (7) is connected to an adjusting knob (8), a compression spring (9) is sleeved on the outside of the pull rod (7), one end of the compression spring (9) contacts the adjusting knob (8), and the other end of the compression spring (9) contacts the base (3).

3. A universal joint seat with a rocker arm according to claim 1 or 2, characterized in that: The hinge comprises a fixed hinge fixed on the main seat surface (2) and a movable hinge (10) fixed on the movable seat surface (1); the movable hinge (10) is installed to rotate coaxially with the fixed hinge via a turning shaft (13).

4. A universal joint seat with a rocker arm according to claim 1 or 2, characterized in that: A ratchet (14) is fixedly mounted on the connecting shaft (4), and a ratchet pawl (15) for locking the ratchet (14) is mounted beside the ratchet (14).

5. A universal joint seat with a rocker arm according to claim 4, characterized in that: The connecting shaft (4) is rotatably mounted on the base (3), and the ratchet pawl (15) is rotatably mounted on the base (3).

6. A universal joint seat with a rocker arm according to claim 5, characterized in that: A ratchet switch (12) is fixed to the outer end of the pawl (15).

7. A universal joint seat with a rocker arm according to claim 1, characterized in that: The elastic puller is a gas spring.

8. A universal joint seat with a rocker arm according to claim 1 or 2, characterized in that: A controllable gas spring (11) is installed between the rocker arm (6) and the base (3).

9. A universal joint seat with a rocker arm according to claim 1 or 2, characterized in that: An electric push rod is installed between the rocker arm (6) and the base (3).

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