Backrest locking device for office chair
阅读说明:本技术 一种办公椅用靠背锁定装置 (Backrest locking device for office chair ) 是由 曾小辉 吴金龙 曾小方 于 2019-12-01 设计创作,主要内容包括:本发明公开了一种办公椅用靠背锁定装置,包括支撑板和调节转轴,所述支撑板的一侧下方安装有凸出块,所述支撑板靠近凸出块的一侧开设有通孔,所述支撑板靠近凸出块的一侧上方安装有靠背,所述调节转轴穿过凸出块,且调节转轴的两端与靠背相固定,所述调节转轴设置有锁定装置,所述锁定装置包括调节杆和棘轮,所述棘轮固定在调节转轴靠近两端的位置,且调节杆上与棘轮垂直对应的位置固定有锁死板,本发明调节靠背的角度时,只需要直接按压靠背,并且将靠背按压到所需角度即可,按压到所需角度后扭簧可带动锁死板回位来将棘轮锁死,此时的靠背角度即可被锁死,进而使得整个靠背的调节较为方便,本装置整体结构简单,适宜上班使用。(The invention discloses a backrest locking device for an office chair, which comprises a support plate and an adjusting rotating shaft, wherein a convex block is arranged below one side of the support plate, a through hole is formed in one side of the support plate, which is close to the convex block, a backrest is arranged above one side of the support plate, which is close to the convex block, the adjusting rotating shaft penetrates through the convex block, the two ends of the adjusting rotating shaft are fixed with the backrest, the adjusting rotating shaft is provided with a locking device, the locking device comprises an adjusting rod and a ratchet wheel, the ratchet wheel is fixed at the position, which is close to the two ends, of the adjusting rotating shaft, and a locking plate is fixed at the position, which is vertically corresponding to the ratchet wheel, on the adjusting rod. Therefore, the whole backrest is convenient to adjust, and the device is simple in integral structure and suitable for office use.)
1. The utility model provides a back locking device for office chair, includes backup pad (3) and regulation pivot (7), its characterized in that: protruding piece (31) are installed to one side below of backup pad (3), through-hole (32) have been seted up to one side that backup pad (3) are close to protruding piece (31), backup pad (3) are close to one side top of protruding piece (31) and install back (5), adjust pivot (7) and pass protruding piece (31), and the both ends of adjusting pivot (7) are fixed mutually with back (5), it is provided with locking device (6) to adjust pivot (7), locking device (6) are including adjusting pole (61) and ratchet (62), ratchet (62) are fixed in the position that adjusts pivot (7) and are close to both ends, adjust pole (61) and pass through-hole (32), and adjust the position fixation that pole (61) go up and correspond perpendicularly with ratchet (62) and have locking board (63).
2. An office chair back lock device according to claim 1, wherein: the rear end of the adjusting rod (61) is fixed with a rotating handle (64), and a torsion spring (65) is sleeved outside the part of the circumference of the adjusting rod (61) which is positioned inside the through hole (32).
3. An office chair back lock device according to claim 2, wherein: a groove (321) is formed in the inner wall of the through hole (32), and pins of the torsion spring (65) are inserted into the groove (321).
4. An office chair back lock device according to claim 1, wherein: and a protective shell is arranged outside the ratchet wheel (62) and the locking plate (63).
5. An office chair back lock device according to claim 1, wherein: supporting legs (1) are arranged below the supporting plate (3), and handrails (4) are fixed on two sides above the supporting plate (3).
6. An office chair back lock device according to claim 1, wherein: the upper surface mounting of backup pad (3) has cushion (2), soft portion (51) that adds is installed to one side that back (5) are close to cushion (2).
Technical Field
The invention relates to the technical field of chairs, in particular to a backrest locking device for an office chair.
Background
The office chair is office furniture which is required by office workers every day, the design form of the office chair is more and more abundant along with the improvement of living standard, and the comfort is greatly improved, but the office workers need to sit on the office chair for more than five and six hours every day, even sit on the office chair for more than ten hours every day during working, waist soreness and backache of the workers can still be caused when the office chairs are seated in the same sitting posture for a long time, and fatigue of the workers can be relieved when the office chairs are laid down and facing upward;
Disclosure of Invention
The invention aims to provide a backrest locking device for an office chair, which aims to solve the problems that the office chair with an adjustable backrest in the prior art is complex in structure and troublesome to adjust.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an office chair uses back locking device, includes backup pad and regulation pivot, protruding piece is installed to one side below of backup pad, the backup pad is close to one side of protruding piece and has seted up the through-hole, the backup pad is close to one side top of protruding piece and installs the back, it passes protruding piece to adjust the pivot, and adjusts the both ends of pivot and fix mutually with the back, it is provided with locking device to adjust the pivot, locking device is including adjusting pole and ratchet, the ratchet is fixed in the position that the pivot of adjusting is close to both ends, adjust the pole and pass the through-hole, and the rigidity that corresponds with the ratchet is perpendicular on adjusting the pole has the jam plate.
Preferably, the rear end of the adjusting rod is fixed with a rotating handle, and a torsion spring is sleeved outside the part of the circumference of the adjusting rod, which is positioned inside the through hole.
Preferably, a groove is formed in the inner wall of the through hole, and the pin of the torsion spring is inserted into the groove.
Preferably, a protective shell is arranged outside the ratchet wheel and the dead locking plate.
Preferably, the supporting legs are arranged below the supporting plate, and handrails are fixed on two sides above the supporting plate.
Preferably, a cushion is mounted on the upper surface of the supporting plate, and a soft adding part is mounted on one side, close to the cushion, of the backrest.
Compared with the prior art, the invention has the beneficial effects that: when the angle of the backrest is adjusted, the backrest only needs to be directly pressed, the backrest is pressed to the required angle, the torsion spring can drive the locking plate to return to lock the ratchet wheel after the backrest is pressed to the required angle, the backrest angle can be locked at the moment, and the whole backrest is convenient to adjust.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the locking device of the present invention;
FIG. 3 is a schematic view of the position of the ratchet wheel on the protruding block according to the present invention;
fig. 4 is a schematic view of the internal structure of the adjusting lever of the present invention on the supporting plate.
In the figure: 1. supporting legs; 2. a cushion; 3. a support plate; 31. a protruding block; 32. a through hole; 321. a groove; 4. a handrail; 5. a backrest; 51. a soft addition part; 6. a locking device; 61. adjusting a rod; 62. a ratchet wheel; 63. locking the plate; 64. turning a handle; 65. a torsion spring; 7. and adjusting the rotating shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in the embodiment of the present invention, a backrest locking device for an office chair includes a supporting
referring to fig. 1, a
referring to fig. 2 and 3, the
referring to fig. 2 and 4, a
The working principle and the using process of the invention are as follows: when the device is used, a person sits on the
when the angle of the
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
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