TWI429412B - Back support interlocking device - Google Patents

Description

Chair back support linkage

The present invention relates to a support linkage device, and more particularly to a seat back support linkage device.

The back of the chair is mounted at the rear of the seat (ie, the position relative to the back of the human body when the seat is seated) to support the back of the human body for comfortable ride.

The spine of the human body is slightly S-shaped, that is, in terms of the back, the human body is slightly depressed at the waist position. The back of the chair is usually set at a height position relative to the waist of the human body to form a waist portion that protrudes slightly forward to support the waist of the human body, so that the waist portion is supported and supported to protect the waist of the human body and to ride it. More comfortable.

However, when the human body is seated in a seat, the height of the human body may be different, or the different postures may be changed, or the position of the sitting position may be changed, so that the waist of the human body is at different heights in the seat or Front and rear position.

Conventional chair backs are usually fixed in terms of their waist and cannot be adjusted in front and rear and/or high and low positions. When the human body changes its sitting or sitting position, causing its waist to deviate from the waist of the back of the chair, the waist of the human body will not be able to obtain effective support and support of the waist, causing the burden on the waist of the human body, which may easily cause fatigue and fatigue of back pain. phenomenon.

Furthermore, the conventional seat back is not provided with a linkage device. When the human body rides on the seat and habitually leans back and leans against the upper part of the seat back, the lower part of the seat back cannot be interlocked to generate a The force of pushing forward relative to the front does not provide a strong support for the waist and the back muscles on both sides of the human body, resulting in discomfort in the waist of the human body.

Due to the above reasons, the application of the conventional chair back is not good.

In view of the drawbacks of the conventional chair back, it is an object of the present invention to provide a seat back support linkage device that can adjust the front and rear and the high and low positions of the waist guard.

Another object of the present invention is to provide a seat back support linkage device that has an interlocking effect and can provide effective support for the muscles of the human body or the muscles on both sides of the muscles at any time.

In accordance with the above objects, an aspect of the present invention provides a seat back support apparatus comprising: a post having a curved lower portion and a vertical upper portion, the bent lower end being fixed to a seat; a flexible a seat back having an upper end portion and a lower end portion and a waist portion interposed between the upper end portion and the lower end portion, the lower end portion being fixed to the curved lower portion of the pillar, and the flexible seat back having an opposite rear surface and a The front surface has an opposite left side portion and a right side portion; and a supporting linkage unit is disposed on the rear surface of the flexible seat back and is slidably disposed on the vertical upper portion of the pillar. According to the different positions of the supporting linkage unit under the pillars, the flexible seat back can be relatively deformed correspondingly, and the front, back and high and low positions of the waist guard are adjusted accordingly, so that the waist of the human body can be effectively supported and relied at any time.

According to an embodiment of the present invention, a vertical upper portion of the pillar is provided with a straight extending slot; the supporting linkage unit includes a slider and a linkage rod group, and the slider slides on the sliding groove of the pillar, and the linkage rod group has a majority The linkage rod has one end assembled in a joint body, and the joint body is disposed on the slider. According to different height positions of the sliders on the pillars, the interlocking rod group drives the flexible seat back to perform corresponding deformation.

According to an embodiment of the invention, the coupling system is pivoted to the slider such that the linkage rod set is movable relative to the slider.

According to an embodiment of the invention, each side of the slider has a lug, each of the lugs is provided with a perforation, the coupling body is provided with a pivot hole, a pivot pivots through the pivot hole and each of the perforations; The group can move with the pivot as the axis.

According to an embodiment of the invention, the outer end portions of the at least one linkage rod of the plurality of linkage rods are floatingly pushed against the rear surface of the flexible seat back to give the human body a floating ejector support.

According to an embodiment of the invention, the plurality of linkage rods are X-shaped linkage rods, and the first linkage rod and the second linkage rod respectively protrude from the coupling body to the upper left and the upper right, respectively, and are respectively connected by the coupling body a third linkage rod and a fourth linkage rod protruding from the lower left side and the lower right side; the outer end portions of the first linkage rod and the second linkage rod are respectively coupled to the left side portion and the right side of the upper end portion of the rear surface of the flexible seat back The outer end portions of the third linkage rod and the fourth linkage rod are respectively floatingly pushed on the left side portion and the right side portion of the waist portion of the rear surface of the flexible seat back. The outer ends correspond to the shoulder scapula on both sides of the back of the human body and the parts of the back muscles on both sides, so that they can obtain effective support and support.

According to an embodiment of the present invention, the outer end portions of the third linkage rod and the fourth linkage rod are respectively pivotally provided with a back muscle support pad, which is respectively floatingly pushed on the left side of the waist portion of the surface behind the flexible seat back. With the right side, about the part of the back muscle of the human body; according to the rotation adjustment of the back muscle support pad, it can be adapted to the change of the sitting posture of the human body, and the flexible back can be provided for the human body. The parts are strongly supported.

According to an embodiment of the present invention, a plurality of linkage rods are Y-shaped linkage rods, including a first linkage rod and a second linkage rod protruding from the coupling body to the upper left and the upper right respectively, and downwardly from the coupling body a fifth linkage rod protruding; the outer end portions of the first linkage rod and the second linkage rod are respectively coupled to the left side portion and the right side portion of the upper end portion of the rear surface of the flexible seat back, and the outer end portion of the fifth linkage rod floats The ground is pushed against the waist of the surface behind the flexible seat back. The outer ends correspond to the shoulder blades and the waist portions on both sides of the back of the human body, so that they can be effectively relied on and supported.

According to an embodiment of the present invention, the outer end portion of the fifth linkage rod is pivotally provided with a lumbar cushion that is floatingly pushed against the waist portion of the rear surface of the flexible seat back, relative to the waist portion of the human body; The rotation adjustment of the cushion can be adapted to the change of the sitting posture of the human body, and the flexible seat back can be provided at any time to strongly support the waist of the human body.

According to an embodiment of the invention, a positioning unit is disposed between the sliding groove of the pillar and the slider supporting the linkage unit for fixing the position adjusted by the supporting linkage unit.

According to an embodiment of the present invention, the positioning unit includes a plurality of positioning slots that are open to each other, and a positioning slot is disposed on the slider and corresponding to the plurality of positioning slots. And positioning with one of the positioning slots. According to the positioning position of the positioning post and the positioning groove at different height positions, the height position of the supporting linkage unit is adjusted and fixed, and the position of the waist of the flexible seat back is adjusted accordingly.

The foregoing and other technical aspects, features and advantages of the present invention will be apparent from the Detailed Description of the accompanying drawings.

Please refer to FIG. 1 to FIG. 6 , which respectively illustrate an external view, an exploded view, a rear view, a side view, an exploded view of the positioning unit, and a supporting linkage device of the seat back support linkage device according to an embodiment of the present invention. Schematic diagram of the adjustment action. As shown, the seat back support device according to an embodiment of the present invention includes a support post 100, a flexible seat back 200 and a support linkage unit 300.

The strut 100 has a strong support strength with a curved lower portion 110 and a vertical upper portion 120. Wherein, the curved lower portion 110 is fixed at one end thereof to the rear end of a seat 500 (i.e., relative to the back of the human body); the vertical upper portion 120 is connected to the top end of the curved lower portion 110, and the vertical upper portion 120 is oriented toward the seat 500. A chute 121 extending in a straight direction is provided.

The flexible seat back 200 is made of a flexible material that can be deformed. The flexible seat back 200 has a pair of upper end portions 210 and a lower end portion 220 and a waist portion 230 interposed between the end portions and protruding toward the seat 500. The lower end portion 200 is a fixed end portion. It is fixed to the curved lower portion 110 of the strut 100. The flexible seat back 200 has an opposite rear surface 240 (ie, the surface of the seat back away from the seat) and a front surface 250 (ie, the surface of the seat back in the direction of the seat), and an opposite one The left side portion 260 and the right side portion 270.

The support linkage unit 300 is disposed on the rear surface 240 of the flexible seat back 200 and is slidably disposed on the vertical upper portion 120 of the support 100. In practice, the support linkage unit 300 includes a slider 310 and a linkage rod set 320. The slider 310 is slidably disposed on the sliding groove 121 of the vertical upper portion 120 of the pillar 100. The linkage rod group 320 has a plurality of linkage rods, one end of which is collected in a coupling body 326 and then assembled to the slider 310. The coupling body 326 can be integrally connected to the slider 310 or can be pivotally disposed on the slider 310 in a movable manner. In the embodiment of the drawing, the linkage rod set 320 is pivoted with the coupling body 326 to the slider 310. The pivoting structure is implemented. The slider 310 has a lug 311 on each side of the slider 310. Each of the lugs is provided with a through hole 312. The coupling body 326 is disposed between the two lugs 311 and is provided with a pivot hole 327. In addition, a pivot 330 pivots through the pivot hole 327 and the through holes 312 on both sides thereof to achieve pivoting between the linkage rod set 320 and the slider 310.

Most of the linkage rods of the linkage rod set 320 are assembled on the rear surface 240 of the flexible seat back 200, and at least one linkage rod is disposed at the other end of the plurality of linkage rods. The outer end is floatingly pushed against the rear surface of the flexible seat back.

In the embodiment shown in FIGS. 1 to 6, it is shown that the plurality of linkage rods are an X-shaped linkage rod, and the first linkage rod 321 protrudes from the coupling body 326 to the upper left and the upper right respectively. A second linkage rod 322 and a third linkage rod 323 and a fourth linkage rod 324 protrude from the coupling body 326 to the lower left and the lower right respectively. The outer end portions of the first linkage rod 321 and the second linkage rod 322 are respectively coupled to the left side portion 260 and the right side portion 270 of the upper end portion 210 of the rear surface 240 of the flexible seat back 200 (ie, approximately corresponding to the back of the human body) The outer end portions of the third linkage rod 323 and the fourth linkage rod 324 are respectively floatingly pushed up to the left side portion 260 and the right side portion 270 of the waist guard portion 230 of the rear surface 240 of the flexible seat back 200 (ie, Approximating the part of the back muscles on both sides of the back of the human body). Accordingly, the back of the human body, the waist and the sides of the waist and the scapula are more prominent and supportive.

Further, in the supporting linkage unit 300, the floating contact between the third linkage rod 323 and the fourth linkage rod 324 and the flexible seat back 200 is at the outer end portions of the third linkage rod 323 and the fourth linkage rod 324. A reaming back muscle support pad 340 is pivotally mounted to the left side portion 260 and the right side portion 270 of the waist portion 230 of the rear surface 240 of the flexible seat back 200, respectively. Accordingly, the outer end portions of the third linkage rod 323 and the fourth linkage rod 324 are steerable with respect to the expanded muscle portion of the human body corresponding to the flexible seat back 200, and are provided with floating ejector support. The flexible seat back 200 can be correspondingly changed according to the adjustment of the human body's back posture, and provides strong support at any time.

That is, during the seated period, for example, during the office, the human body often has a half-turned body, a back-slung, or a sedentary posture, and the support linkage unit 300 can be linked with the first linkage rod 321 and the second linkage. The rod 322 provides a solid support for the shoulder portion of the human body, and can be pivotally connected by the linkage rod set 320 and the slider 310, and the natural linkage force of the human body leaning against the flexible seat back 200, so that the third linkage rod 323 And the outer end portion of the fourth linkage rod 324 can relatively generate a forward pushing force with the pivot shaft 330 as an axis, and can adjust the 360 degree rotation of the back muscle support pad 340 to support the human body back at any time. The largest area of the back muscles makes the body extremely comfortable to ride.

In addition, according to the design of the support linkage unit 300, the linkage rod set 320 is disposed on the slider 321 and can be moved therewith. When the slider 310 and the linkage rod group 320 move up and down to generate a vertical displacement, due to the change of the vertical position thereof, Moreover, since the lower end portion 220 of the flexible seat back 200 has been fixed, the distance of the flexible seat back 200 in the horizontal depth direction can be changed, so that the position of the waist portion 230 of the flexible seat back 200 is changed. That is, the user can adjust the supporting linkage unit 300 to slide the slider 310 up and down in the sliding slot 121 of the strut 100, and relatively move the flexible seatback 200 with the lower end portion 220 as a fulcrum, so that the upper end portion 210 is made Corresponding actions and deformations of the upper and lower sides, and corresponding movements and deformations of the waist guard 230.

Therefore, according to the design of the support linkage unit 300 and the flexible seat back 200, the front, rear, and high and low positions of the waist guard 230 of the flexible seat back 200 can be adjusted to match the user's different heights or different depth positions. Or the different positions of the waist due to different sitting postures. For example, when the human body is seated on the seat base 500 and the seat depth is in the rear position, the user can adjust the slider 310 of the support linkage unit 300 of the present invention upward along the sliding slot 121 of the pillar 100, and relatively move. The waist portion 230 of the flexible seat back 200 is adjusted backward to support the rearward waist of the human body; when the sitting depth of the human body on the seat 500 is in the front position, the user can support the invention. The slider 310 of the interlocking unit 300 is adjusted downward along the sliding slot 121 of the strut 100, and the waist portion 230 of the flexible seat back 200 is relatively adjusted to support the forward waist of the human body. Therefore, regardless of the posture or the deep position of the human body, the adjustment of the support linkage unit 300 enables the waist portion of the human body to obtain the support and the support of the waist portion 230 of the flexible seat back 200, thereby reducing the burden on the waist of the human body, and Make it comfortable to ride.

The seat back support linkage device according to an embodiment of the present invention further includes a positioning unit 400 disposed on the sliding slot 121 of the support post 100 and the slider 310 supporting the linkage unit 300. between. The positioning unit 400 can be either automatic or manual. In the embodiment of the present invention, the positioning unit 400 includes a plurality of positioning slots 410 that are open to each other, and are formed in the slot wall of the slot 121 extending in the straight direction, and a positioning post 420 is disposed on the slider 310. And corresponding to the plurality of positioning slots, and is engaged with one of the positioning slots 410. When the positioning post 420 is engaged with the positioning slot 410 at different height positions, the height position of the supporting linkage unit 300 can be adjusted and fixed, and the position of the waist portion 230 of the flexible seat back 200 can be adjusted accordingly.

Please refer to FIG. 7 to FIG. 9 , which are respectively an exploded view, a rear view and a side view of the seat back support linkage device according to a second embodiment of the present invention.

The structure of the second embodiment is similar to that of the first embodiment. In the second embodiment, the plurality of linkage rods of the linkage rod set 320 are a Y-shaped linkage rod, and the first linkage rod 321 and the second portion respectively protrude from the coupling body 326 to the upper left and the upper right respectively. The linkage rod 322 and a fifth linkage rod 325 projecting downward from the coupling body 326. The first linkage rod 321 and the second linkage rod 322 have the same structure as that of the first embodiment, that is, the outer end portions thereof are respectively coupled to the left side portion 260 of the upper end portion 210 of the rear surface 240 of the flexible seat back 200 and The right side portion 270 (ie, the portion corresponding to the shoulder blades on both sides of the back of the human body); the outer end portion of the fifth linkage rod 325 is floatingly pushed against the waist portion 230 of the rear surface 240 of the flexible seat back 200 (ie, approximately corresponds to the human body) The waist part). Accordingly, the back and waist of the human body are supported and supported.

Further, in terms of the floating contact of the supporting linkage unit 300 with the fifth linkage rod 325 and the flexible seat back 200, a lumbar cushion 350 is pivotally mounted on the outer end of the fifth linkage rod 325, which is floatingly pushed on The waist portion 230 of the rear surface 240 of the flexible seat back 200. Accordingly, the outer end portion of the fifth linkage rod 325 is steerable relative to the waist portion of the human body corresponding to the flexible seat back 200, and is provided with floating ejector support. Therefore, the flexible seat back 200 is at this portion. It can be changed according to the adjustment of the human back posture, and provide strong support at any time.

That is, during the seated period, for example, during the office, the human body often has a half-turned body, a back-slung, or a sedentary posture, and the support linkage unit 300 can be linked with the first linkage rod 321 and the second linkage. The rod 322 provides a solid support for the shoulder portion of the human body, and can be pivotally connected by the linkage rod set 320 and the slider 310, and the natural linkage of the human body against the flexible seat back 200 makes the fifth linkage rod 325 The outer end portion can relatively generate a forward pushing force with the pivot shaft 330 as an axis, and can adjust the 360 degree rotation of the waist pad 350 to support the waist of the human body at any time, so that the human body is extremely comfortable in riding. .

According to an embodiment of the present invention, the supporting device of the back of the chair can adjust the front, back, and height of the back of the back of the chair according to the body shape or the sitting position or the sitting position, so that the waist of the human body can be effectively supported and relied at any time. To reduce the burden on the waist of the human body, and according to the design of the pivotal connection of the movable rod group, the outer end portion of the linkage rod provides a stable floating push-supporting support at any time with respect to the waist or the back muscle of the human body. And make the human body ride comfortably. As described above, the object of the invention is indeed achieved.

The present invention is disclosed in the above embodiments, and is not intended to limit the scope of the present invention, and various modifications and refinements may be made without departing from the spirit and scope of the invention. It is subject to the definition of the scope of the patent application attached.

100. . . pillar

110. . . Bent lower

120. . . Vertical upper

121. . . Chute

200. . . Flexible seat back

210. . . Upper end

220. . . Lower end

230. . . Waist protection

240. . . Back surface

250. . . Front surface

260. . . Left side

270. . . Right side

300. . . Support linkage unit

310. . . Slider

311. . . Lug

312. . . perforation

320. . . Linkage rod group

321. . . First linkage

322. . . Second linkage

323. . . Third linkage

324. . . Fourth linkage

325. . . Fifth linkage

326. . . Linked body

327. . . Pivot hole

330. . . Pivot

340. . . Expanded back muscle support pad

350. . . Waist cushion

400. . . Positioning unit

410. . . Positioning slot

420. . . Positioning column

500. . . Seat

The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt;

1 is a perspective view showing a seat back support linkage device according to a first embodiment of the present invention.

Fig. 2 is an exploded view showing the seat back supporting interlocking device shown in Fig. 1.

Figure 3 is a rear elevational view of the seat back support linkage shown in Figure 1.

Fig. 4 is a side elevational view showing the seat back support linkage device shown in Fig. 1.

Fig. 5 is an exploded perspective view showing the positioning unit of the seat back supporting linkage device shown in Fig. 1.

Fig. 6 is a schematic view showing the adjustment operation of the seat back support linkage device shown in Fig. 4.

Figure 7 is an exploded view of the seat back support linkage device in accordance with a second embodiment of the present invention.

Figure 8 is a rear elevational view of the seat back support linkage shown in Figure 7.

Figure 9 is a side elevational view showing the seat back support linkage shown in Figure 7.

100. . . pillar

110. . . Bent lower

120. . . Vertical upper

121. . . Chute

200. . . Flexible seat back

210. . . Upper end

220. . . Lower end

230. . . Waist protection

240. . . Back surface

250. . . Front surface

260. . . Left side

300. . . Support linkage unit

310. . . Slider

320. . . Linkage rod group

321. . . First linkage

323. . . Third linkage

326. . . Linked body

330. . . Pivot

340. . . Expanded back muscle support pad

Claims (8)

A seat back support linkage device includes: a pillar having a curved lower portion and a vertical upper portion, wherein one end of the curved lower portion is fixed to a seat, and a vertical upper portion of the pillar is provided with a straight extending slot; a flexible seat back having opposite upper and lower ends and a waist portion between the upper end and the lower end, the lower end being fixed to a curved lower portion of the post; and the flexible seat back Having an opposite rear surface and a front surface, and an opposite left side portion and a right side portion; and a supporting linkage unit disposed on the rear surface of the flexible seat back, the support linkage unit including a slider and a linkage rod group, the slider is slidably disposed on the sliding groove of the pillar, the linkage rod group has a plurality of linkage rods, one end of which is assembled on a coupling body, the coupling body is pivotally disposed on the slider, and the plurality of linkage rods are at least The outer end of a linkage rod is floatingly pushed against the rear surface of the flexible seat back. The seat back support linkage device of claim 1, wherein each side of the slider has a lug, and each of the lugs is provided with a perforation, and the coupling body is provided with a pivot hole and a pivot pivot The pivot hole and each of the perforations are worn. The seat back support linkage device of claim 1, wherein the plurality of linkage rods are X-shaped linkage rods, and the first linkage rod and the first linkage rod protruding from the coupling body to the upper left and the upper right respectively a second linkage rod, and a third linkage rod and a fourth linkage rod protruding from the coupling body to the lower left and the lower right respectively; the outer end portions of the first and second linkage rods The left end portion and the right side portion of the upper end portion of the rear surface of the flexible seat back are respectively connected, and the outer end portions of the third and fourth interlocking rods are respectively floatingly pushed to the left side of the waist portion of the rear surface of the flexible seat back Department and right side. The back support support device of claim 3, wherein the outer end portions of the third and fourth linkage rods are respectively pivotally provided with a back muscle support pad, and each of the expanded muscle support pads floats respectively. Pushing the left side portion and the right side portion of the waist portion of the surface behind the flexible seat back. The seat back support linkage device according to claim 1, wherein the plurality of linkage rods are Y-shaped linkage rods, and the first linkage rod and the first linkage rod protruding from the coupling body to the upper left and the upper right respectively a second linkage rod, and a fifth linkage rod protruding downward from the coupling body; the outer end portions of the first and second linkage rods are respectively coupled to the left side portion of the upper end portion of the rear surface of the flexible seat back In the right side portion, the outer end portion of the fifth linkage rod is floatingly pushed against the waist portion of the rear surface of the flexible seat back. The back support support device of claim 5, wherein the outer end of the fifth linkage rod is pivotally provided with a lumbar cushion, and the lumbar cushion is floatingly pushed against the surface of the back of the flexible seat back. waist. The seatback support linkage device of claim 1, wherein a positioning unit is disposed between the sliding groove of the pillar and the slider of the supporting linkage unit. The seat back support linkage device of claim 7, wherein the positioning unit includes a plurality of positioning slots that are open to each other, and a slot wall that extends in a straight direction to the slot of the pillar, and a positioning post is disposed on the slot The slider corresponds to the plurality of positioning slots and is engaged with one of the positioning slots.