CN201911670U - Office chair lumbar support - Google Patents

Abstract

The utility model discloses an office chair waist leans on device, the device includes one and installs the back of the chair on the chair utensil, and this back of the chair includes again that one supplies the person of taking the back to lean on the portion, and a pin joint in leaning on the portion lower extreme and leaning on the portion in the waist that the piece constitutes for two waists of bilateral symmetry pivot together admittedly, and make these two waists lean on the effect that the piece has inside elasticity pendulum to change and close, make two waists simultaneously lean on the solid department of pivot between the piece pin joint one joint seat again, make this joint seat again and install the elasticity support unit pin joint on office chair together, and then make the waist lean on the portion simultaneously have the effect that elasticity supported, outside the waist that the person of taking the event can receive appropriate elasticity support, two waists lean on the portion also can hold the waist of the person of taking the seat just like the hand, consequently, the waist that the person of taking the seat obtains more to paste comfortable support.

Description

Office chair lumbar support

technical field

The utility model relates to the lumbar part of the back of an office chair. In addition to the function of elastic support, the lumbar part is designed in two pieces, so that the waist of the occupant can be hugged and supported.

Background technique

Modern people may spend much more time in the office than at home, and a comfortable office chair plays a very important role, but the sitting posture that remains unchanged for a long time can also cause lower back pain for the occupants However, the efficacy of belt protectors currently on the market that claim to prevent lower back pain has not yet been proven, and over-reliance on belts may have adverse effects. For computer users who may suffer from lower back pain due to prolonged static sitting , you must consider choosing a suitable seat.

Generally speaking, the sitting posture with the trunk upright or slightly forward (at this time, the angle between the thigh and the upper body is less than 90 degrees), the pressure on the lumbar intervertebral disc is greater than that of the standing posture, so long-term static sitting posture (lack of posture changes) can also easily lead to fatigue , so we often see that after sitting for a long time, people's bodies will move around to relieve discomfort. At the same time, the backrest supports part of the body weight, reduces the stress on the lumbar spine, and relaxes the muscles. Therefore, it is very important for the waist to be supported by the backrest during work to reduce lower back fatigue.

Therefore, when the chair surface is too deep, the lumbar spine cannot touch the back of the chair and cannot be supported, or when the backrest is too high or too low, the lumbar spine cannot get proper support.

In addition, in order to obtain proper support for the waist of the occupant on the chair, the designer is a utility model such as the "elastic waist leaning device that can rise and fall with the backrest of the chair" with the application number of 201020116243, which includes an adjustable An elastic support unit with elastic expansion and contraction is pivotally connected between the lower end of the backrest and the chair, and the support unit is composed of two supporting inner rods that are interwoven and elastically condensable with a spring drawn between them. And support the outer rod, and make the two ends of the elastic support unit pivot, respectively sleeve the spring that can make the support unit and the backrest swing towards the predetermined direction, and then not only allow the backrest to be adjusted to different heights, but also make the lower end of the backrest The lumbar part has the function of elastic leaning, so that passengers of different heights can lean ergonomically, and the waist of the passengers can be supported comfortably, so that the back pain of long-time passengers can be relieved; although The above-mentioned method has provided good support for the waist of the occupant, but if there is a better design, the waist of the occupant can be supported more completely, which is the greatest purpose of the present invention.

Utility model content

Therefore, in order to achieve the above-mentioned effect of allowing the occupant's waist to obtain more complete support, the new model is to allow the lower end of the seat back to be connected with a lumbar support that can swing back and forth and is supported by an elastic support unit at the back. The part is that the left and right waist rests are pivotally connected together symmetrically, and the two waist rests have the function of elastic clamping, so that the waist of the occupant is not only supported by the elastic force, but also has the function of supporting and hugging.

The technical solution adopted by the utility model to solve the technical problem is: a waist support device for an office chair, the device is a chair with a backrest, and the backrest includes a backrest, and a backrest that can be connected under the backrest. The lumbar part swings back and forth, and an elastic support unit is arranged between the back of the lumbar part and the chair, wherein the lumbar part includes two symmetrical lumbar plates pivoted together, and the two lumbar A spring that allows the two waist leaners to be elastically clamped is installed at the pivotal position of the leaner.

Moreover, the above-mentioned joint between the two waist rests of the utility model is pivotally connected to a seat, and then the seat is pivotally connected to the elastic support unit installed on the office chair.

The beneficial effect of the utility model is that, in addition to allowing the occupant's waist to be elastically supported through the elastic support unit, the two lumbar support pieces of the chair back support the occupant's waist like hands , so that the occupant's waist can be leaned more comfortably.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the three-dimensional schematic view of the utility model;

Fig. 2 is a side view of the utility model;

Fig. 3 is the exploded schematic diagram of the utility model chair back;

Fig. 4 is a side sectional view of the utility model chair back;

Fig. 5 is an enlarged schematic view of the section A-A of Fig. 4 .

Among the figure 1. Chair, 2. Chair back, 21. Backrest, 211. Groove, 212. Back cover, 22. Waist rest, 221. Waist rest, 222, 223. Pivot seat, 224. Pivot Shaft, 225. T word portion, 226. pivot, 227. seat, 228. spring, 3. elastic support unit.

Detailed ways

Please refer to Figures 1 and 2, the chair 1 of the present utility model is provided with a chair back 2, and between the lower end of the chair back 2 and the chair 1, an elastic support unit 3 is connected therebetween, and the chair back 2 also includes a backrest 21 and a lumbar support 22 connected to the lower end of the backrest 21, and as shown in Figures 3 and 4, the lumbar support 22 also includes two left and right symmetrical lumbar support pieces 221, And make the upper and lower parts of the two waist rests 221 adjacent to the side, respectively fixed with relative pivotal seats 222,223, and the two relative pivotal seats 222,223 above are provided with a pivot 224 to wear together At the same time, the pivot 224 extends upwards to form a T-shaped portion 225 at its end, and at the back of the lower end of the backrest 21 corresponding to the T-shaped portion 225, a groove 211 that can accommodate the T-shaped portion 225 is recessed. , and a back cover 212 can be locked in the groove 211, so that the T-shaped part 225 will not come out of the groove 211, and the pivot 224 can swing back and forth, that is, the waistrest 22 can be used Back and forth swinging action.

In addition, between the two pivotal seats 222 and 223 below the two lumbar support pieces 221, another pivotal shaft 226 is also used to pass through the pivotal seat, and another connecting seat 227 is also provided through the pivotal shaft 226 and the pivotal seat at the same time. The two pivot seats 222, 223 are worn together, and the other side of the seat 227 is pivotally connected with one end of the aforementioned elastic support unit 3, and the other end of the elastic support unit 3 is pivotally connected. At the predetermined position corresponding to the chair 1, the lumbar support part 22 can be supported by the elastic support unit 3, so that the lumbar support part 22 has the function of elastic support.

In addition, the upper and lower pivotal seats 222, 223 of the above-mentioned pivotal two waist support pieces 221 are threaded and engaged on the pivot shafts 224, 226 therebetween, and several springs 228 are sheathed at the same time, and the two springs 228 The end legs abut against the corresponding pivot seats 222, 223, so that the two waist rests 221 can be elastically closed inward (as shown in FIG. 5 ).

Therefore, when the occupant sits on the chair 1 and his waist leans against the lumbar support portion 22, the lumbar support portion 22 is pushed by the elastic support unit 3 at the back, so that the lumbar support portion 22 can be tightly Keep fit on the waist of the occupant, and the two waist panels 221 of the lumbar support part 22 can hold the occupant's waist like hands, so that the occupant's waist feels more appropriate and comfortable.

Claims (4)

1. office chair lumbar support apparatus, it is characterized in that, this device is to establish the chair back on the chair tool, but and this chair back includes that a back-rest and is connected under the back-rest and the waist of swing by portion, and make this waist establish an elasticity supporter by connecing between portion behind and the chair tool, wherein this waist by portion be comprise left-right symmetry and pivot admittedly together two waists and make two waists be equiped with can making the spring of two waists by sheet by the clamping of sheet elasticity by the pin fixed part of sheet.

2. office chair lumbar support apparatus according to claim 1, it is characterized in that, this two waist is located upper and lower by the next-door neighbour relative edge of sheet, be installed with respectively relatively and respectively and wear the solid seat of He Shugu pivot together with a pivot, and with being arranged with spring on each pivot season, and the two ends pin that makes spring is resisted against respectively on the solid seat of corresponding pivot, and then orders about the effect that two waists have elasticity and close by sheet.

3. office chair lumbar support apparatus according to claim 1, it is characterized in that this two waist is by sheet below pivot together the solid seat of two pivots admittedly, its pivot is worn simultaneously again and is closed on another joint chair, allow this joint chair and elasticity supporter articulate, the other end of elasticity supporter then is that pivot is fixed on the chair tool.

4. office chair lumbar support apparatus according to claim 1, it is characterized in that, this two waist is by sheet top pivot together the solid seat of two pivots admittedly, its pivot extends upward and forms a T word portion in the upper end, then be arranged with a groove that can be installed with this T word portion corresponding to the back-rest part, then at groove locking one back of the body lid and T word portion can not deviate from.

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