TWM510686U - Soft backrest adjustment device - Google Patents

Description

Sofa back adjustment device

The invention relates to a structure of a sofa chair, in particular to a sofa chair back adjusting device capable of adjusting the position of the seat back without a step.

Due to the improvement of material living standards and the advancement of manufacturing technology, the sofa chairs used in modern homes are not limited to traditional designs with fixed styles and functions. Another functional sofa that combines functionality, comfort and styling has become the furniture market. New favorite.

1 is a view showing a configuration of a functional sofa that can be adjusted to the back of a sofa, wherein a middle portion of the sofa back 60 is rotatably pivotally provided with a support rod 61, and the other end of the support rod 61 is rotatably pivoted to The seat 62 of the sofa chair or the inner skeleton of the seat cushion (not shown). By the support and connection of the support rod 61, the user can freely move the sofa back 60 between a first position and a second position, and only needs to raise the sofa back 60 slightly. The seat back 60 is swung to another position with the pivotal center of the support rod 61 and the seat 62 as a center of rotation, so that the sofa back 60 can be repositioned on the seat cushion to complete the position adjustment of the sofa back 60. By adjusting the position of the sofa back 60, the user can freely change the seat depth of the sofa.

The adjustable sofa back of the functional sofa can only provide two position adjustment functions, which is difficult to meet the needs of users of different sizes, and its structural stability, adjustment convenience and durability are insufficient. It is necessary to improve it.

The present invention proposes a sofa back adjustment device that can adjust the position of the back of the sofa without a step. The method of adjusting the back of the sofa can be completed only by pushing and pulling, which has the advantages of easy operation, and the structure and support strength are more. excellent.

In order to achieve the above functions, an embodiment of the novel sofa back adjustment device includes a base, a pulley and a one-way thrust mechanism; the base is fixed to the seat of the sofa, and the base has a slide rail and a a rack; the pulley has a bracket for connecting and supporting the back of the sofa, and the trolley can move back and forth along a sliding rail between a first position and a second position of the slide rail; the one-way thrust mechanism is mounted on the trolley. The one-way thrust mechanism comprises a brake block and an elastic element. In the normal state, the brake block is located in the one-way braking position, so that the sofa back can only move toward the second position, and when the trolley moves to the second position, the brake block can be swung to The release position allows the back of the sofa to be freely moved back to the first position, and when the trolley is moved to the first position, the brake block can be returned to the normal one-way braking position.

In an embodiment of the present invention, the brake block is pivotally disposed at a first pivoting point of the trolley, and the base includes a first stop and a second stop. When the pulley and the brake block move to the second position, the brake block will collide with the second stop, so that the brake block swings to the release position with the first pivot point as the center of rotation, and when the block and the brake block move to the first position. The brake block collides with the first stopping portion, so that the braking block swings to the normal one-way braking position with the first pivoting point as a center of rotation.

Through the sofa back adjustment device disclosed in the present invention, the user can freely move the seat back from the first position toward the second position to adjust the position of the back of the sofa and the depth of the seat, when the sofa The back of the seat is moved to the second position, and the back of the sofa back can be pushed back to the initial first position, and the position of the back of the sofa and the depth of the seat can be freely adjusted in the same manner. Degree, has the advantage of easy operation.

The following description of the drawings is a preferred embodiment for the purpose of the present invention, the embodiments, the technical features and the functions thereof, and is not intended to limit the present invention.

"Knowledge Technology"

60‧‧‧Sofa back

61‧‧‧Support rod

62‧‧‧ seat

"This new type"

P1‧‧‧ first position

P2‧‧‧ second position

S‧‧‧ sofa

S10‧‧‧ seat

S11‧‧‧Cushion

S12‧‧‧Sofa back

10‧‧‧ Pedestal

11‧‧‧Slide rails

12‧‧‧ rack

121‧‧‧ teeth

13‧‧‧First stop

14‧‧‧Second stop

20‧‧‧ tackle

21‧‧‧ bracket

22A‧‧‧First pivot point

23A‧‧‧First pivot

23B‧‧‧Second pivot

30‧‧‧One-way thrust mechanism

40‧‧‧ brake pads

41‧‧‧ ratchet

42‧‧‧first strike end

43‧‧‧second strike end

44‧‧‧First chute

441‧‧‧ first end

442‧‧‧ second end

45‧‧‧Second chute

451‧‧‧Card end

452‧‧‧"

50‧‧‧Flexible components

51‧‧‧Free end

Fig. 1 is a view showing the structure and operation of a functional sofa which can be adjusted to the back of a sofa.

Fig. 2 is an exploded perspective view showing an embodiment of the sofa seat back adjusting device of the present invention.

Fig. 3 is an exploded perspective view showing the structure of an embodiment of the sofa seat back adjusting device of the present invention.

Fig. 4 is a view showing the combined structure of an embodiment of the sofa back adjustment device of the present invention.

FIG. 5 is a schematic view of the use of the sofa back adjustment device of the present invention, showing the situation that the sofa back adjustment device is disposed on the sofa.

FIG. 6 is a side view structural view of FIG. 5, showing the positional relationship between the sofa back adjustment device and the sofa back.

7A to 7D are continuous operation diagrams of the sofa seat back adjusting device of the present invention.

First, please refer to FIG. 2 to FIG. 4 , which are structural exploded views of an embodiment of the sofa back adjustment device of the present invention; an embodiment of the novel sofa back adjustment device includes: a base 10 , a pulley 20 and a single To the thrust mechanism 30.

The base 10 is fixed to the seat S10 of the sofa S (see FIG. 5 and FIG. 6) or the inner skeleton of the seat cushion S11 (not shown in the drawing, because the sofa S is not shown in the dotted line of the novel), the base is shown. The seat 10 has a slide rail 11, a rack 12, a first stop portion 13 and a second stop portion 14 (see Fig. 7A). The rack 12 has a plurality of rows arranged along the long axis of the rack 12. Tooth 121, slide rail 11 and rack 12 The long axis directions are parallel to each other and extend in the same direction, and the embodiment of the slide rail 11 may be any one of a round rod shape, a work rail or other equivalent elements, and the present figure is a pair of mutual Parallel round rod-shaped slide rails 11, but not limited thereto, in other embodiments of the present invention, the slide rails 11 may be any one of a work rail or other equivalent components, the first stop portion 13 and the first The two stopping portions 14 are respectively located at two ends of the sliding rail 11 in the long axis direction. In an embodiment of the present invention, the first stopping portion 13 and the second stopping portion 14 are respectively fixed to the rack 12 . Both ends of the long axis direction.

The trolley 20 has a bracket 21 for coupling and supporting the sofa back S12. The trolley 20 is slidably disposed on the slide rail 11 and can be along the slide rail 11 at a first position P1 of the slide rail 11 (see FIG. 7D). And moving back and forth between a second position P2 (see FIG. 7B) (the first position P1 and the second position P2 can be regarded as positions where the trolley 20 moves to the end of the axial ends of the slide rail 11, respectively).

The one-way thrust mechanism 30 includes a brake block 40 and a resilient member 50. The brake block 40 is pivotally disposed at a first pivot point 22A of the trolley 20. The brake block 40 has a ratchet 41 and a first a striking end 42 and a second striking end 43 , the ratchet 41 can mesh with the tooth portion 121 of the rack 12 , and the brake block 40 can swing to a one-way braking position with the first pivot point 22A as a center of rotation and One of the release positions, in the normal state, the brake block 40 is in the one-way braking position (see FIG. 7A), and the user can freely move the sofa back S12 toward the second position P2, and the brake block is moved during the movement. 40 can swing freely with the first pivot point 22A as a center of rotation, so that the ratchet 41 can slide over the surface of the tooth 121 (see FIG. 7B), and when the sofa back S12 is stopped at any position, the elastic force of the elastic member 50 can be Pushing the ratchet 41 of the brake block 40 back to the position where the tooth portion 121 is engaged, providing a one-way stop function; when the pulley 20 and the brake block 40 are moved to the second position P2, the second strike end 43 is The two stops 14 collide, causing the brake block 40 to swing to the release position (see FIG. 7C), and vice versa when the block 20 and the brake block 40 Movable to a first position P1, a first end 42 will strike the stopper portion 13 of the first collision (see FIG. 7D), so that the brake shoe 40 swings to the normal one-way braking position; the ratchet teeth 41 of the brake block 40 in the one-way braking position mesh with the tooth portions 121 of the rack 12, the ratchet teeth 41 of the brake block 40 and the teeth of the rack 12 in the release position When the portion 121 is separated, the ratchet 41 and the tooth portion 121 can be engaged to restrict the movement of the pulley 20 and the brake block 40 only in a single direction toward the long axis direction of the slide rail 11 and the rack 12, which is an implementation of the novel FIG. For example, the trolley 20 and its associated sofa back S12 can only be moved from the first position P1 toward the second position P2. In other words, the one-way thrust mechanism 30 has a one-way stop function, the ratchet 41 and the tooth portion 121. The pulley 20 and the brake block 40 can be arbitrarily moved in the long axis direction of the slide rail 11 and the rack 12 at the time of separation.

In an embodiment of the present invention, the function of the resilient member 50 is to provide a spring force for maintaining the brake block 40 in either of the one-way braking position and the release position.

To achieve the above functions, an embodiment of the elastic member 50 and the brake block 40 is as follows, but is not limited to the embodiments described below and the corresponding drawings, and those skilled in the art will understand the following. In the embodiment, when other equivalent structures can be easily completed, such a simple transformation should still belong to the technical scope of the present invention.

The elastic member 50 may be any one of a leaf spring, a coil spring and a torsion spring. One end of the elastic member 50 is fixed to the trolley 20, and the other free end 51 of the elastic member 50 is long against the brake block 40 by the elastic member. The spring force of 50 maintains the brake block 40 in either of the one-way braking position and the release position.

The brake block 40 has a first sliding slot 44 and a second sliding slot 45. The first sliding slot 44 can be an elongated slot extending along a straight line or an arc. The second sliding slot 45 is a narrow and long with a turning. The first pivoting point 22A of the trolley 20 is provided with a first pivot 23A. The first pivot 23A corresponds to the first sliding slot 44 in a loose fit relationship, and the trolley 20 further has a second pivot 23B. The second pivot shaft 23B corresponds to the second sliding slot 45 in a loosely fitting relationship, and the first pivot shaft in the normal state. 23A is located at a first end 441 of the first chute 44, and the second pivot 23B is located at a carding end 451 of the second chute 45. When the trolley 20 moves toward the second position P2, the second pivot 23B is The card is placed at the carding end 451 while the brake block 40 is moved together in the direction of the second position P2. In the normal state, the brake block 40 is in the one-way braking position (see FIG. 7A), when the trolley 20 and the brake block 40 are moved to the second position. P2, the second strike end 43 will collide with the second stop portion 14, and the first pivot 23A will slide to a second end 442 at the other end of the first chute 44, while the second pivot 23B will slide to a pushing end 452 (see FIG. 7C) at the other end of the second chute 45, and the ratchet 41 of the brake block 40 is lifted up by the second pivot 23B to the tooth portion of the rack 12. Separating, the brake block 40 is swung to the release position, and the second pivot 23B temporarily stays at the pushing end 452 under the pushing of the elastic force of the elastic member 50, thereby temporarily maintaining the brake block 40 in the release position; The trolley 20 and the brake block 40 are moved to the first position P1, and the first strike end 42 collides with the first stop portion 13, causing the first pivot 23A Returning to a first end 441 of the first chute 44 (ie, the aforementioned normal position), and the second pivot 23B is again returned to the carding end 451 of the second chute 45, and the brake block 40 is swung back to the normal state. One-way braking position.

As can be seen from the description of the above embodiments and the accompanying drawings, the user can freely move the sofa back S12 from the first position P1 toward the second position P2 by the sofa back adjustment device disclosed in the present invention. For adjusting the position of the sofa back S12 and the depth of the seat, when the sofa back S12 is moved to the second position P2, the sofa back S12 can be pushed back to the initial first position P1 and freely in the same manner. Adjusting the position of the sofa back S12 and the depth of the seat has the advantage of being easy to handle.

The embodiments and/or the embodiments described above are merely illustrative of preferred embodiments and/or implementations of the present invention, and are not intended to limit the implementation of the present invention in any form. Without departing from the teachings of this novel content The scope of the invention may be modified or modified as other equivalent embodiments, but still should be considered as the same or the same.

10‧‧‧ Pedestal

11‧‧‧Slide rails

12‧‧‧ rack

121‧‧‧ teeth

13‧‧‧First stop

20‧‧‧ tackle

21‧‧‧ bracket

30‧‧‧One-way thrust mechanism

40‧‧‧ brake pads

43‧‧‧second strike end

Claims (7)

A sofa back adjustment device for adjusting the position of a sofa back of a sofa without a segment, comprising a base, a pulley and a one-way thrust mechanism; the base is fixed to the sofa, the base has a a slide rail, a rack, a first stop portion and a second stop portion, the rack having a plurality of teeth arranged along a long axis direction of the rack; the pulley has a bracket for connecting and supporting a back of the sofa, the trolley is movable back and forth along the slide rail between a first position and a second position; the one-way thrust mechanism is mounted on the trolley, the one-way thrust mechanism includes a brake block And a resilient member, the brake block has a ratchet, the brake block is pivotally disposed at a first pivoting point of the trolley, and in the normal state, the brake block is located at a one-way braking position, the ratchet and the ratchet The toothed engagement causes the sofa back to move only in a direction toward the second position, the trolley moves to the second position, and the brake block collides with the second stop to cause the brake block to be the first The pivot point is swung to a center of rotation to a release position in the release position The ratchet of the brake block is separated from the tooth portion of the rack, the trolley moves to the first position, and the brake block collides with the first stop, so that the brake block is at the first pivot point The center of rotation swings to the normal one-way braking position. The sofa back adjustment device of claim 1, wherein the slide rail is any one of a round bar slide rail and a work rail. The sofa back adjustment device according to claim 2, wherein the slide rail is a pair of parallel rod-shaped slide rails. The sofa back adjustment device according to claim 1, wherein the first stop portion and the second stop portion are respectively fixed to both ends of the rack in the longitudinal direction. The sofa back adjustment device of claim 1, wherein the elastic member is any one of a leaf spring, a coil spring, and a torsion spring. The sofa back adjustment device of claim 1, wherein one end of the elastic member is fixed to the trolley, and the other free end of the elastic member normally faces the brake block. The sofa back adjustment device of claim 1, wherein the brake block has a first sliding slot and a second sliding slot, and the first sliding slot can be an elongated sliding slot extending along a straight line or an arc. The second chute is an elongated trough having a turn, the first pivot point of the trolley is provided with a first pivot, and the first pivot passes through the first chute in a loose fit relationship. The second pivoting shaft has a second pivoting shaft, and the second pivoting shaft passes through the second sliding slot in a loosely fitting relationship. In a normal state, the first pivoting shaft is located at a first end of the first sliding slot. a second pivot is located at a latching end of the second chute, the block and the brake block are moved to the second position, the brake block collides with the second stop, and the first pivot will slide to a second end of the other end of the first chute, and the second pivot will slide to a pushing end at the other end of the second chute, the second pivot pivoting the brake block The ratchet is lifted up to be separated from the tooth; the block and the brake block are moved to the first position, and the brake block is a stop portion collides, causing the first pivot to return to the first end of the first sliding slot, the second pivot returning to the locking end of the second sliding slot, causing the braking block to swing back to the normal state The one-way braking position.