TWI811100B - Seat back cushion structure - Google Patents

Abstract

The present invention relates to a seat back cushion structure. The upper and lower ends of the cushion are pivotally penetrated by two parallel rods suspended in front of the seat back board, and a push-pullable push-pull is railed on the two parallel rods under the cushion. Embossing block, wherein the upper and lower ends of the cushion are protruded with two wire clip grooves, so that after the two wires that can be reversely pulled by an adjuster are combined, different adjusters are respectively driven to change the curvature of the cushion and change the cushion., the upper and lower positions of the embossing block.

Description

Chair back cushion structure

The invention relates to a chair back structure, in particular to a back cushion structure.

The chair back cushion is a cushion structure installed on the back of the chair. By adjusting the curvature of the back cushion, the back of the chair can change its curve according to the user's back, so that the back of the chair can fit the user's back better. For support, it has become an integral structure of the chair back.

In the known back cushion structure design, the back cushion is an elastic and flexible body with a forward curvature. By changing the length of the upper and lower ends through the wire traction, the curvature of the back cushion is adjusted to change, so that the chair back Can support the user's back. However, the body shape of each user is completely different, so it is difficult for the cushion with the upper and lower ends to be fixed on the back of the chair to fully meet the support needs of the user's back, and the design of the cushion is mainly to support the back corresponding to the lumbar spine. The sacrum (sacral vertebra) located at the buttocks has no support at all, so users with abnormal sitting postures tend to bend backwards from the buttocks. Even if the lumbar spine is supported by cushions, waist and buttock pain cannot be avoided.

In view of the above-mentioned problems, the inventor deeply felt that the structure of the back cushion needs to be further improved. Therefore, based on his years of experience in the design and manufacture of professional back cushions, he actively developed and improved it. After careful consideration of various conditions, he finally created the The composition of this structure will completely solve various problems of conventional use.

The present invention relates to a chair back cushion structure. Mainly, the upper and lower sides of the back cushion are pivotally pierced by two parallel rods suspended in front of the chair back board, and a push-pull push-pull rail is rail-connected to the two parallel rods below the back cushion. In the embossed block, the upper and lower ends of the backrest are protruded with two wire slots, so that the two wires that can be pulled in reverse by an adjuster can be combined, so the following performance can be provided after implementation:

Since the back cushion of the present invention is pivotally pierced by two parallel rods, and the upper and lower ends of the back cushion are protruded with two wire clip grooves for the combination of two wires drawn by an adjuster in reverse, so the back cushion has the original curvature In addition to the changing function, the upper and lower relative positions of the back cushion relative to the chair backboard can also be adjusted and changed, so different users' backs can obtain good supporting effects.

Under the back cushion of the present invention, there is a push-pull embossed block railed on two parallel rods, so the embossed block can be fixedly combined with the back cushion to form an interlocking state, providing support against the sacrum, and preventing the user from starting from the buttocks. The phenomenon of bending backwards can prevent waist and buttock pain. Furthermore, the embossed block can be further protruded with two wire clamping grooves for the combination of two wires pulled in the opposite direction by another adjuster. Therefore, under the benefit that both the back cushion and the embossed block can be adjusted up and down separately, it can More accurately correspond to the lumbar spine and sacrum of different user shapes to provide support.

1: Cushion

11: wire card slot

2: Parallel bar

21: spacer

3: embossed block

31: hook fastener

32: wire card slot

4: Chair back panel

5: Adjuster

51: wire

52: Conduit

[Fig. 1] is a structural diagram of the present invention.

[Fig. 2] refers to Fig. 1 for the composition state of the present invention.

[Fig. 3] refers to Fig. 2 for the composition state of the present invention.

[Fig. 4] is a schematic diagram of the implementation of the present invention.

[Fig. 5] is another structural diagram of the present invention.

[Fig. 6] is another structural implementation diagram of the present invention.

In order to enable your examiners to clearly understand the structure and composition of the present invention and the functional benefits that it can achieve, the remaining examples are listed in conjunction with the drawings, and the detailed description is as follows:

The present invention is a kind of chair back cushion structure. Mainly, the upper and lower ends of the back cushion 1 are pivotally pierced by two parallel rods 2 suspended in front of the chair back board 4 (as shown in FIG. Two parallel rods 2 of the two parallel bars 2 are rail-connected with a forward protruding and push-pull embossing block 3, wherein the upper and lower ends of the back cushion 1 are protrudingly provided with two wire clamping grooves 11 (as shown in Figures 2 and 3), so that After the two wires 51 that can be reversely pulled by an adjuster 5 are combined (the two wires 51 are fixed in reverse by the internal traction element, the operation of pulling and releasing synchronously can be performed after the wire guide 52 is positioned. Conventional design, so only a brief description), by different adjusters 5 respectively drive back cushion 1 curvature change and change the upper and lower positions of back cushion 1, embossed block 3 relative to seat back panel 4 (in this structure, The embossed block 3 can be pushed down by the downward sliding adjustment of the back cushion 1, so that the embossed block 3 is normally located below the two parallel rods 2 to abut against and support the sacrum).

Wherein, the two parallel rods 2 suspended in front of the chair backboard 4 can be locked on the chair backboard 4 by bending downwards at both ends to form a suspension, or pads 21 can be installed at both ends. And the first embodiment of the embossed block 3 can be fixedly combined with the back cushion 1 to form an interlocking state, so in addition to integral molding, bonding, and locking, the corresponding hook and fastener 31 can also be protruded from the embossed block 3 The clamping combination under the back cushion 1 belongs to the known category, and the present invention is not limited by the above-mentioned embodiments, and various changes can be made without departing from the scope of the gist, so there is no need to repeat them here.

Therefore, through the above-mentioned structural design, it can be seen that since the upper and lower ends of the back cushion 1 are pivoted by two parallel rods 2 to form a slidable state, and the upper and lower ends of the back cushion 1 are protrudingly provided with two wires. 11 are combined for two wires 51 of an adjuster 5 reverse traction, therefore rely on Except that the pad 1 has the function of the original curvature change, the upper and lower relative positions of the back pad 1 and the embossed block 3 linked with it relative to the seat back board 4 can also be adjusted and changed (as shown in Figure 4, after adjusting When the device 5 is not in operation, the upper and lower positions of the back cushion 1 and the embossed block 3 will be fixed on the two parallel rods 2), so the backs of different users can obtain a good supporting effect (the adjuster in the drawing Series 5 is a conventional multi-wire adjuster, which can separately pull the backrest 1 to change the curvature, adjust the upper and lower positions of the backrest 1), so that different users' backs can obtain good support effects, and allow the embossed block 3 to resist Top and support the sacrum.

Furthermore, the second embodiment of the above-mentioned embossed block 3 is provided with two wire clamping grooves 32 for the combination of two wires 51 reversely drawn by another adjuster 5 (as shown in Figure 5, since the embossed block 3 does not have a cushion 1 produces the feature of changing the curvature (the distance between the upper and lower ends of the embossed block 3 remains unchanged), so the two wire clamping grooves 32 can be arranged at the upper end, the lower end or the upper and lower ends of the embossed block 3), so in The back cushion 1 and the embossed block 3 can be adjusted up and down separately, and the distance between the back cushion 1 and the embossed block 3 can be changed (as shown in Figure 6), which can more accurately correspond to the lumbar spine of different users. , The sacrum provides the best support.

1: Cushion

2: Parallel bar

21: spacer

3: embossed block

5: Adjuster

51: wire

52: Conduit

Claims (3)

A chair back cushion structure, the main two sides of the upper and lower ends of the back cushion are pivoted by two parallel rods suspended in front of the chair back board, and a forward protrusion is tracked on the two parallel rods below the back cushion It is a push-pull embossed block, wherein the upper and lower ends of the back cushion are protruded with two wire slots, so that after the two wires that can be pulled in the opposite direction by an adjuster are combined, the back cushion arcs are respectively driven by different adjusters. The curvature changes and changes the upper and lower positions of the cushion and the embossed block relative to the seat back board. The chair back cushion structure as described in claim 1, wherein the embossed block is integrally formed, glued, locked or hooked and combined under the back cushion, so that the embossed block and the back cushion are linked. The seat back cushion structure as described in Claim 1, wherein the embossed block is provided with two wire clamping grooves for the combination of two wires pulled in the opposite direction by another adjuster, so as to adjust the distance between the embossed block and the back cushion.

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