CN207492423U

CN207492423U - A kind of armchair structure for having movable back

Info

Publication number: CN207492423U
Application number: CN201720321227.5U
Authority: CN
Inventors: 刘高潮
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-03-30
Filing date: 2017-03-30
Publication date: 2018-06-15
Anticipated expiration: 2027-03-30

Abstract

A kind of armchair structure for having movable back, including supporting leg, backrest body, turning joint, back bracket, attachment device and limiting device, turning joint is installed on the lower part of backrest body, and turning joint is connected by attachment device with back bracket, and backrest can rotate in the range of limiting device restriction.It can easily movable waist using the seat of this structure.

Description

A kind of armchair structure for having movable back

Technical field

The utility model is related to a kind of armchair structure, particularly it is a kind of can movable waist armchair structure.

Background technology

What much people were different degrees of suffers from chronic low back muscle damage, influences work, study, pain is brought to life. In sitting posture or standing position, upper part of the body weight is pressed on lumbar vertebrae and psoas people, is easily bent lumbar vertebra anterior arch, long-term waist Portion's anterior arch bending is to cause one of waist muscle damage reason.What doctor recommended tempers waist, the side for alleviating the swollen feeling of waist acid Method is all that waist to be made is folded back upon, and it is in the anti-state bent to make lumbar vertebrae., for axis, in the absence of external forces, in the middle part of lumbar vertebrae Maintain lumbar vertebrae it is counter bend it is folded back upon be it is highly difficult, few people can take regular exercise so that waist muscle damage is into being not easy to treat The illness of elimination.

Invention content

Existing difficulty, is more prone to waist exercise during in order to overcome waist exercise, and the utility model provides one kind There is the armchair structure of movable back.

A kind of armchair structure for having movable back, including supporting leg, backrest body, turning joint, back bracket, connection dress It puts and limiting device, turning joint is installed on the lower part of backrest body, turning joint is connected by attachment device with back bracket, Backrest can rotate in the range of limiting device restriction.

The turning joint can be a kind of T fonts pin, and the horizontal end of T font pins is fixed on by back, pin Vertical end is inserted in the hole of attachment device.

The turning joint can be two bolts, and latch body is mounted on by back, and shank is inserted in attachment device pair In the hole answered, bolt rear end can be there are one compression spring.

The turning joint can be an axis, and axis is fixed in itself by back, and the both ends of axis are fixed on attachment device On.

The limiting device, can be back bracket in itself.

The limiting device, at least more than one pair of protrusion that can be mounted in back bracket or attachment device Object.

The attachment device can be at least more than one pair of hole or U-shaped in the relative position of back bracket top Card slot.

The limiting device and attachment device, can be a prismatoids, and there are two protrusion, ladders at the broadside of prismatoid The inside of bottom is there are one hole at body narrow side, close to trapezoidal narrow side at there are one cross-drilled hole, have screw thread at the most narrow end of prismatoid Locking device.

The limiting device and attachment device, it is U-shaped to be that a hollow pipe is converted into, under close at U-shaped cross bar Folding institute is into each there are one protrusion at folding under U-shaped cross bar, two ports of U-shaped bar are connected to screw-threaded coupling device.

This section is deleted

The principle of the utility model：With reference to figure 7, Fig. 8：One lever is placed on the small of the back, the lower end n points of lever resistance arm It is against the middle part of lumbar vertebrae, the upper end b of power arm is attached to back, and fulcrum m makes E times of resistance brachium of power arm in the lower part of lever Degree；When shoulder back is swung back, lever is in non-equilibrium state, can be rotated by axis of fulcrum m, move, be against after the b points of lever power end Resistance arm n ends in the middle part of lumbar vertebrae are moved forward by E times of thrust backward, and mobile distance is the 1/E of shifting distance after b points, is made Waist is in the anti-state bent.

By experiment it is found that by the back of people for original state to 10 ° of layback, when the power arm and resistance arm of lever Ratio E be less than or equal to 1 when, waist only supported, the power very little being subject to；As balance pivot m is moved down, E values increase, The reason of power that waist is subject to gradually increases, and can be slightly reduced after reaching maximum value, reduction is with the increase of E values, under lever The displacement for holding n towards lumbar vertebrae direction reduces, and the forward displacement of waist reduces；So consider, the ratio of power arm and resistance arm Value 4 >=E >=3 are a preferred areas.

Good effect

When people sit on the seat when, backrest lower edge has been attached on lower caging device at this time, by chair top, backrest surface and Cooperation between upper half of human body weight makes the buttocks of people be between chair top and backrest lower edge, and the middle part of lumbar vertebrae is by backrest Lower edge resist, slightly firmly swing back above the waist, back is bonded with backrest, and lumbar vertebrae would be at close to ideal physiology shape State.When needing to temper waist, only need to make shoulder, back again to layback by the strength of waist abdomen or two-arm, backrest upper edge by The promotion of one power F backward because the structure of backrest is a lever, the lower edge of backrest can to waist one be several times as much as The power of F makes lumbar vertebrae forward, in the anti-state bent, loosens after continuing 1--3 seconds, makes lumbar vertebra recovery to original state；Make again Shoulder back is swung back, and lumbar vertebrae is made to loosen again after maintaining 1--3 seconds, in cycles in the anti-state bent.It is damaged by many waist muscles The patient of wound tries out, it is this using itself strength carry out this slow, periodic waist movement, can it is very laborsaving and The effective symptom alleviated waist and ached.

Description of the drawings

Fig. 1 is backrest to latter linked armchair structure schematic diagram；

Fig. 2 is the structure diagram in T-shaped joint；

Fig. 3 is a kind of limiting device and attachment device is integrated armchair structure schematic diagram；

Fig. 4 is a kind of limiting device and attachment device is integrated structure diagram；

Fig. 5 is a kind of limiting device and attachment device is integrated armchair structure schematic diagram；

Fig. 6 is a kind of limiting device and attachment device is integrated structure diagram；

Fig. 7 is the principle schematic of the utility model；

Fig. 8 is the schematic diagram using the utility model activity waist.

Specific embodiment

The utility model is described in detail with embodiment below in conjunction with the accompanying drawings：

Embodiment one：As shown in Figure 1 and Figure 2：The armchair structure of movable waist includes backrest 1, back bracket 6, in work There is turning joint 4 at dynamic backrest middle and lower part 1/4, have hole 3 more than at least one set in back bracket, the pin of turning joint is inserted In the hole of different height, the height of adjustable backrest；In this embodiment, the back rest supports of lower edge play close on backrest The function of limiting device, makes the backrest will not overturn.

Embodiment two：Referring to Fig. 3, Fig. 4：The armchair structure of movable waist includes backrest 1, back bracket 6, and activity is closed Section 4,3 shape of attachment device is similar trapezoidal, and internal there are one hole 11, the diameter in hole is slightly larger than the outer diameter of back bracket；It is connecting There is limiting device 2 in device upper end, and lower end has screw thread to latch 7, and there is hole 8 in middle and lower part；Turning joint at movable back lower part 1/4 4 be an axis, and the both ends of axis are inserted in the hole 8 of attachment device 3, and attachment device 3 is sleeved on back bracket bar, backrest support rods top Portion is opened downwards there are one long mouth, and attachment device 3 can be slided in backrest support rods 6, and to adjust the height of backrest, adjustment is closed Screw thread lock is tightened after suitable.

Embodiment three：Referring to Fig. 5, Fig. 6：There are two movable latch, the ontology installations of movable latch for 1 lower part of movable back At backrest lower part 1/5, pin is inserted in attachment device 3, and bolt rear end can install a spring, and locking pin will not be unexpected Abjection；Attachment device 3 be bent into the pipe passed through in one slightly larger than backrest support rods it is U-shaped, and at U-shaped top cross bar It is formed after downward bending, in bending part installation, there are two protrusions；There are screw thread lock 7 in two ports of U-shaped attachment device, U-shaped For the port sleeve of attachment device in back rest supports, backrest support rods top down opens the height that attachment device 3 is adjusted there are one elongated slot Degree, it is possible to adjust the height of backrest lower edge, after adjusting, tighten two nut locks.

Claims

1. a kind of armchair structure for having movable back, including supporting leg, backrest body, turning joint, back bracket, attachment device And limiting device, it is characterised in that：Turning joint is installed on the lower part of backrest body, and turning joint passes through attachment device and backrest Stent connects, and backrest can rotate in the range of limiting device restriction.

2. a kind of armchair structure for having movable back according to claim 1, it is characterised in that：The turning joint, Can be a kind of T fonts pin, the horizontal ends of T font pins is fixed on by back, and the vertical end below pin is inserted in attachment device Hole in.

3. a kind of armchair structure for having movable back according to claim 1, it is characterised in that：The turning joint, Can be two bolts, latch body is mounted on by back, and shank is inserted in the hole of attachment device, bolt rear end can there are one Compression spring.

4. a kind of armchair structure for having movable back according to claim 1, it is characterised in that：The turning joint, Can be an axis, axis is fixed in itself by back, and the both ends of axis are fixed in attachment device.

5. a kind of armchair structure for having movable back according to claim 1, it is characterised in that：The limiting device, Can be back bracket in itself.

6. a kind of armchair structure for having movable back according to claim 1, it is characterised in that：The limiting device, At least more than one pair of protrusion that can be mounted in back bracket or attachment device.

7. a kind of armchair structure for having movable back according to claim 1, it is characterised in that：The attachment device, Can be at least more than one pair of hole or U-shaped card slot in the relative position of back bracket top.

8. a kind of armchair structure for having movable back according to claim 1, it is characterised in that：The limiting device and Attachment device, can be a prismatoid, and there are two protrusion at the broadside of prismatoid, the inside of bottom has one at prismatoid narrow side Close at trapezoidal narrow side there are one cross-drilled hole, there is screw-threaded coupling device in a hole at the most narrow end of prismatoid.

9. a kind of armchair structure for having movable back according to claim 1, it is characterised in that：The limiting device and Attachment device, it is U-shaped to be that a hollow pipe is converted into, and folding institute is into two ports of U-shaped bar connect under close at U-shaped cross bar There is screw-threaded coupling device, each at folding under U-shaped cross bar there are one protrusions.