Quick adjusting shaft for sofa bed

Abstract

The utility model discloses a quick adjusting shaft for a sofa bed, which relates to the technical field of sofa beds and comprises a main shaft and a lantern ring, the main shaft is fixed with the bottom of the sofa bed, the lantern ring is fixed with a backrest of the sofa bed, an adjusting shaft is fixedly arranged at the top end of the main shaft, the adjusting shaft is provided with a sliding groove with an outward opening, and a sliding seat is slidably arranged in the sliding groove. The sliding seat is connected with the bottom of the sliding groove through an extension spring, a sliding rail is arranged on the side wall of the sliding groove, a limiting block penetrating through the sliding rail is fixedly arranged on the sliding seat, the adjusting shaft is sleeved with the lantern ring, a limiting seat is fixedly arranged on the lantern ring, clamping grooves in a circumferential array are formed in the side, facing the adjusting shaft, of the limiting seat, and an arc-shaped column is fixedly arranged on the outer wall of the adjusting shaft. The arc-shaped columns are sleeved with supporting springs. The sofa bed backrest support is simple in structure, convenient to operate, high in practicability and suitable for popularization, the sofa bed backrest can be put down and erected through the spring mechanism, the angle of the sofa bed backrest can be adjusted by pressing down the tilting rod, and the sofa bed backrest can be fixed by loosening the tilting rod.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sofa bed technical field, concretely relates to a sofa bed quick adjustment axle. BACKGROUND

[0002] Sofa bed refers to the furniture that can be used as sofa and bed. Modern room layout advocates simplicity, and multi-functional furniture is becoming the choice of the public, and sofa bed is one of them. When the backrest of sofa bed is erected, it can be used as sofa, and when the backrest of sofa bed is laid flat, it can be used as bed.

[0003] The existing sofa bed backrest is erected and laid flat, and its adjusting mechanism is various. The common way is to connect the sofa bed backrest with the bottom of sofa bed through slide rail or pivot. The sofa bed backrest needs to be fixed when it is erected. The existing sofa bed locking mechanism is inconvenient to adjust, and the sofa bed backrest can be adjusted to a multi-angle sofa bed rotating mechanism which is too complex. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a sofa bed quick adjustment axle, simple structure, through spring mechanism can realize to sofa bed backrest's lay down, erection, convenient operation, press down the jack-up rod can adjust the angle of sofa bed backrest, loosen the jack-up rod can make sofa bed backrest fixed, practicality is strong, is fit for promoting.

[0005] The utility model provides the following technical scheme: a sofa bed quick adjustment axle, including spindle, sleeve ring, the spindle is fixed with the bottom of sofa bed, the sleeve ring is fixed with the backrest of sofa bed, the top of spindle is equipped with the adjusting axle, the adjusting axle is equipped with the sliding groove of opening towards outside, the sliding groove is equipped with the sliding seat in sliding, the sliding seat is connected with the bottom of sliding groove through the tensile spring, the other side of sliding seat is equipped with the jacking structure, the side wall of sliding groove is equipped with the sliding rail of through, the sliding seat is fixedly equipped with the limiting block of through sliding rail,

[0006] The sleeve ring is sleeved on the adjusting axle, the limiting seat is fixedly arranged on the sleeve ring, the limiting seat is in the shape of an arc around the adjusting axle, the limiting seat is provided with a circumferential array of clamping grooves on the side facing the adjusting axle, and the shape of the clamping grooves matches the limiting block.

[0007] The arc-shaped column is fixedly arranged on the outer wall of the adjusting axle, extends around the adjusting axle and is inserted into the arc-shaped groove of the limiting seat, and the part of the arc-shaped column outside the arc-shaped groove is sleeved with a supporting spring.

[0008] Preferably, the jacking structure comprises a jack-up rod, the jack-up rod is installed on the side of the sliding seat away from the tensile spring through a connecting shaft, and the jack-up rod extends over the adjusting axle and is provided with a handle.

[0009] Preferably, the limiting block is provided with an inclined top surface towards one side of the sliding groove, and the limiting seat is provided with an inclined surface inclined towards the clamping groove.

[0010] Preferably, the strength of the supporting spring meets the pushing of the limiting seat, and the lowermost clamping groove is combined with the limiting block, and the strength of the stretching spring meets the extrusion of the arc-shaped groove by the inclined top surface, so that the limiting seat is rotated to the position opposite to the limiting block.

[0011] The sofa bed backrest adjusting mechanism has the advantages of simple structure, convenient operation, and strong practicability.

[0012] When the sofa bed backrest needs to be adjusted, the handle of the jack lever is pressed down, the jack lever is supported on the side wall of the sliding groove, the limiting seat is pulled outwards, the limiting block is separated from the clamping groove, the supporting spring supports the limiting seat, the sofa bed backrest is moved to the vertical state relative to the base, the sofa bed backrest is pushed to rotate along the main shaft, the angle of the sofa bed backrest is adjusted, when the jack lever is loosened, the limiting block is pulled back by the stretching spring, if the limiting block does not coincide with the adjacent clamping groove, the inclined top surface on the limiting block extrudes the inclined surface at the opening of the clamping groove under the pulling of the stretching spring, the limiting seat is deflected to coincide with the adjacent clamping groove, the limiting block is pressed into the clamping groove, the limiting seat and the main shaft are fixed, and the sofa bed backrest is fixed. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation to the present application. In the drawings:

[0014] Figure 1 is a sectional view of the present application;

[0015] Figure 2 is a sectional view of the present application;

[0016] Figure 3 is an enlarged view of A of the present application;

[0017] In the drawings, 1 is a main shaft, 2 is an adjusting shaft, 3 is a sleeve ring, 4 is a limiting seat, 5 is a sliding seat, 6 is a sliding groove, 7 is a limiting block, 8 is a sliding rail, 9 is a clamping groove, 10 is an inclined surface, 11 is a stretching spring, 12 is an arc-shaped column, 13 is a supporting spring, 14 is a connecting shaft, 15 is a jack lever, 16 is an inclined top surface, and 17 is an arc-shaped groove. DETAILED DESCRIPTION

[0018] Clearly and completely describe the technical scheme in the embodiments of the utility model in combination with the drawings in the embodiments of the utility model; apparently, the described embodiments are only some of the embodiments of the utility model, not all the embodiments, and all other embodiments obtained by the person skilled in the art without making creative labor based on the embodiments in the utility model belong to the scope of protection of the utility model.

[0019] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0020] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be connected inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0021] Now, the structural characteristics of the utility model will be described in detail in combination with the drawings in the description.

[0022] Referring to Figures 1-2The utility model provides a sofa bed quick adjustment axle, including main shaft 1, collar 3, main shaft 1 is fixed with the bottom of sofa bed, collar 3 is fixed with the back of sofa bed, and the top of main shaft 1 is fixedly arranged with adjustment axle 2, and adjustment axle 2 is equipped with the sliding groove 6 of opening towards outside, and sliding groove 6 is slidably arranged with sliding seat 5, and sliding seat 5 is connected with the bottom of sliding groove 6 through tension spring 11, and sliding seat 5 is reset through tension spring 11, and the other side of sliding seat 5 is equipped with jacking structure, and jacking structure includes warping bar 15, and the side of sliding seat 5 away from tension spring 11 is installed warping bar 15 through connecting shaft 14, and warping bar 15 extends through adjustment axle 2 and is equipped with handle, and by pressing the handle of warping bar 15, warping bar 15 is supported on the side wall of sliding groove 6, and limit seat 4 is pulled outwards, and the side wall of sliding groove 6 is equipped with the sliding rail 8 of through, and sliding seat 5 is fixedly arranged with the limit block 7 of through sliding rail 8, and collar 3 is sleeved in adjustment axle 2, and collar 3 is fixedly arranged with limit seat 4, and limit seat 4 is the arc shape of surrounding adjustment axle 2, and the side of limit seat 4 towards adjustment axle 2 is equipped with the circumferential array of clamping groove 9, and the shape of clamping groove 9 is matched with limit block 7, and when limit block 7 is clamped into clamping groove 9, collar 3 is fixed with the position of adjustment axle 2, and the side of limit block 7 towards sliding groove 6 is equipped with inclined top surface 16, and limit seat 4 is located between clamping groove 9 and is equipped with the inclined surface 10 of deflection towards clamping groove 9, and the strength of tension spring 11 satisfies when inclined top surface 16 extrudes arc groove 17, limit seat 4 rotates to the position of clamping groove 9 and limit block 7, and if limit block 7 and its adjacent clamping groove 9 do not coincide, the inclined top surface 16 on it extrudes the inclined surface 10 of the opening of clamping groove 9 under the pulling of tension spring 11, and limit seat 4 is deflected to limit block 7 and its adjacent clamping groove 9 coincide.

[0023] Referring to Figure 1 、 3 , the outer wall of adjustment axle 2 is fixedly arranged with arc column 12, and arc column 12 extends around adjustment axle 2 and is inserted into the arc groove 17 of limit seat 4, and the part of arc column 12 outside arc groove 17 is sleeved with supporting spring 13, and the strength of supporting spring 13 satisfies pushing limit seat 4, and the lowermost clamping groove 9 of limit seat 4 is combined with limit block 7, and limit seat 4 is supported through supporting spring 13, and the backrest of sofa bed can be moved to the vertical state of base, so that the backrest of sofa bed can automatically rebound in the laid-down state.

[0024] The sofa bed quick adjustment axle of the utility model has simple structure, and the sofa bed backrest can be laid down and erected through spring mechanism, and the angle of sofa bed backrest can be adjusted by pressing warping bar, and the sofa bed backrest can be fixed by releasing warping bar, so that the utility model is practical and suitable for promotion.

[0025] Specific use, refer to Figure 1-3When the sofa bed backrest needs to be adjusted, the handle of the kick lever 15 is pressed down, the kick lever 15 is supported on the side wall of the sliding groove 6, the limiting seat 4 is pulled outwards, the limiting block 7 is separated from the clamping groove 9, at this time the supporting spring 13 supports the limiting seat 4, the sofa bed backrest is moved to the vertical state with the base, the sofa bed backrest is pushed to rotate along the main shaft 1, the angle of the sofa bed backrest can be adjusted, when the kick lever 15 is released, the limiting block 7 is pulled back by the tension spring 11, at this time if the limiting block 7 does not coincide with the clamping groove 9 adjacent thereto, the inclined top surface 16 on the limiting block 7 extrudes the inclined surface 10 at the opening of the clamping groove 9 under the pulling of the tension spring 11, the limiting seat 4 is deflected to the clamping groove 9 adjacent to the limiting block 7, the limiting block 7 is pressed into the clamping groove 9, the limiting seat 4 is fixed with the main shaft 1, and the fixing of the sofa bed backrest can be realized.

[0026] The above only provides preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sofa bed quick adjustment shaft, comprising a main shaft (1) and a sleeve ring (3), the main shaft (1) is fixed with the bottom of the sofa bed, and the sleeve ring (3) is fixed with the backrest of the sofa bed, characterized in that, The main shaft (1) top end is fixedly provided with an adjusting shaft (2), the adjusting shaft (2) is provided with a sliding groove (6) with an opening facing the outside, the sliding groove (6) is slidably provided with a sliding seat (5), the sliding seat (5) is connected with the bottom of the sliding groove (6) through a tension spring (11), the other side of the sliding seat (5) is provided with a jacking structure, the side wall of the sliding groove (6) is provided with a through sliding rail (8), the sliding seat (5) is fixedly provided with a limiting block (7) penetrating through the sliding rail (8); The sleeve ring (3) is sleeved on the adjusting shaft (2), the sleeve ring (3) is fixedly provided with a limiting seat (4), the limiting seat (4) is an arc shape surrounding the adjusting shaft (2), the limiting seat (4) is provided with a circumferential array of clamping grooves (9) on the side facing the adjusting shaft (2), the shape of the clamping groove (9) is matched with the limiting block (7); The outer wall of the adjusting shaft (2) is fixedly provided with an arc-shaped column (12), the arc-shaped column (12) extends around the adjusting shaft (2) and is inserted into the arc-shaped groove (17) of the limiting seat (4), the part of the arc-shaped column (12) outside the arc-shaped groove (17) is sleeved with a supporting spring (13).

2. The quick adjustment axle for a sofa bed according to claim 1, wherein, The jacking structure comprises a lever (15), the sliding seat (5) is installed with the lever (15) through a connecting shaft (14) away from the side of the tension spring (11), the lever (15) extends over the adjusting shaft (2) and is provided with a handle.

3. The quick adjustment shaft for a sofa bed according to claim 1, wherein, The limiting block (7) is provided with an inclined top surface (16) on the side facing the sliding groove (6), the limiting seat (4) is provided with an inclined surface (10) inclined to the clamping groove (9) between the clamping grooves (9).

4. The quick adjustment shaft for a sofa bed according to claim 3, wherein, The strength of the supporting spring (13) meets the requirement of pushing the limiting seat (4), the lowermost clamping groove (9) of the limiting seat (4) is combined with the limiting block (7), the strength of the tension spring (11) meets the requirement of rotating the limiting seat (4) to the position opposite to the clamping groove (9) and the limiting block (7) when the inclined top surface (16) extrudes the arc-shaped groove (17). The jacking structure comprises a lever (15), the sliding seat (5) is installed with the lever (15) through a connecting shaft (14) away from the side of the tension spring (11), the lever (15) extends over the adjusting shaft (2) and is provided with a handle. The limiting block (7) is provided with an inclined top surface (16) on the side facing the sliding groove (6), the limiting seat (4) is provided with an inclined surface (10) inclined to the clamping groove (9) between the clamping grooves (9). The strength of the supporting spring (13) meets the requirement of pushing the limiting seat (4), the lowermost clamping groove (9) of the limiting seat (4) is combined with the limiting block (7), the strength of the tension spring (11) meets the requirement of rotating the limiting seat (4) to the position opposite to the clamping groove (9) and the limiting block (7) when the inclined top surface (16) extrudes the arc-shaped groove (17).

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