Elastic module comprising elastic units having adjustable distance therebetween, bendable elastic pad, and sofa bed

Abstract

An elastic module comprising elastic units having an adjustable distance therebetween, comprising at least two elastic units (1), one of the elastic units (1) being provided with an insertion member, the other elastic unit (1) being provided with a fitting member, the fitting member having an elongated groove (23), and the insertion member being provided with a sliding block (22); and the sliding block (22) moving in the elongated groove (23) to adjust the distance between the two elastic units (1). Also provided is a bendable elastic pad, comprising elastic units (1) arranged in an array. The elastic units (1) arranged in an array are at least divided into a first region and a second region, wherein adjacent elastic units (1) in the first region and the second region are arranged as distance-adjustable elastic modules (2). Also provided is a sofa bed equipped with a bendable elastic pad.

Description

Elastic module with adjustable distance between elastic units, bendable elastic pad and sofa bed

[0001] Cross-reference to related applications

[0002] This application claims priority to:

[0003] The Chinese patent applications with the application numbers 202410634260.8, filed on May 21, 2024, and 2024109851686, filed on July 22, 2024, to the China National Intellectual Property Office, entitled “Elastic module with adjustable distance between elastic units, bendable elastic pad and sofa bed” and “Adjusting mechanism of bendable elastic pad and bendable elastic pad”, respectively, are hereby incorporated by reference in their entirety. TECHNICAL FIELD

[0004] The present application relates to a kind of furniture, in particular to a kind of elastic module with adjustable distance between elastic units, bendable elastic pad and sofa bed. BACKGROUND

[0005] Elastic pad angle adjusting technology is a new type of functional design, aiming to improve the comfort and convenience of the elastic pad. This technology allows users to adjust the angle of the elastic pad according to different needs, allowing the elastic pad to have both flat and backrest modes, and is widely used in sofa beds.

[0006] Since the elastic pad is composed of individual elastic units, a certain space must be formed between two elastic units to allow rotation. However, this space has no support in the flat position, making users feel that there is a collapsed area in the elastic pad, which is not good for user experience. SUMMARY

[0007] The main technical problem to be solved by the present application is to provide an elastic module with adjustable distance between elastic units, which can allow the elastic units of the elastic pad to have a bending space, and still have support in the flat position.

[0008] To solve the above technical problems, the present application provides an elastic module with adjustable distance between elastic units, comprising at least two elastic units, one of which is provided with a plug-in part, and the other of which is provided with a plug-in part, the plug-in part has a long slot, and the plug-in part has a sliding block; The sliding block moves in the long slot to adjust the distance between the two elastic units.

[0009] In some embodiments, the elastic unit is fixedly connected with a connecting strip along the width direction, and the two ends of the connecting strip protrude outward from the two sides of the elastic unit along the width direction;

[0010] One end of the connecting strip is provided with the sliding block, and the other end is provided with the long slot; between the two elastic units, the sliding block of one elastic unit is arranged in the sliding slot of the other elastic unit, and has translational freedom in the direction of extending along the sliding slot and rotational freedom around the axis of the sliding block.

[0011] The application further provides an elastic module with adjustable distance between elastic units, comprising at least two elastic units, and a connecting rod assembly connected between the two elastic units through hinged connection; the connecting rod assembly is folded or unfolded to adjust the distance between the two elastic units.

[0012] In some embodiments, the connecting rod assembly is in V shape or X shape or W shape.

[0013] In some embodiments, the V-shaped connecting rod assembly comprises a first connecting rod and a second connecting rod, one end of each of which is hinged to the waist ring of the adjacent two elastic units, and the other end of each of which is hinged.

[0014] In some embodiments, the connecting rod assembly further comprises a third connecting rod and a fourth connecting rod, one end of each of which is hinged to the base of the adjacent two elastic units, and the other end of each of which is hinged.

[0015] The rod body of the third connecting rod is hinged to the rod body of the first connecting rod, and the rod body of the second connecting rod is hinged to the rod body of the fourth connecting rod.

[0016] In some embodiments, the two elastic units are connected through a hinged connection of a scissors assembly; the scissors assembly is folded or unfolded to adjust the distance between the two elastic units.

[0017] In some embodiments, the scissors assembly comprises a first branch arm and a second branch arm hinged in X shape; the two ends of the first branch arm are respectively hinged to the waist ring of one elastic unit and the base of the other elastic unit; the two ends of the second branch arm are respectively hinged to the base of one elastic unit and the waist ring of the other elastic unit.

[0018] In some embodiments, the first branch arm and the second branch arm respectively comprise a first sub-branch arm in T shape and a second sub-branch arm in strip shape; one end of the first sub-branch arm and the second sub-branch arm is hinged; the first sub-branch arm in the first branch arm and the second branch arm is hinged.

[0019] The application also provides a flexible module with adjustable distance between flexible units, comprising at least two flexible units and a connecting member connecting the two flexible units; the connecting member has a long slot, and the flexible units are provided with sliding blocks; the sliding blocks move in the long slot to adjust the distance between the two flexible units.

[0020] In some embodiments, the sliding blocks have translational freedom along the direction in which the sliding blocks extend in the sliding slots and rotational freedom about the axes of the sliding blocks.

[0021] The application also provides a flexible module with adjustable distance between flexible units, comprising at least two flexible units, and adjacent flexible units are connected by waist rings; the top cover of the flexible units has a width smaller than the bottom cover of the flexible units to form a space between the adjacent flexible units to adjust the distance between the two flexible units.

[0022] The application also provides a flexible cushion, characterized by comprising an array of flexible units; the array of flexible units is divided into at least a first region and a second region; and adjacent flexible units in the first region and the second region are arranged as the flexible module described above to form a space between the adjacent flexible units in the first region and the second region for bending of the second region relative to the first region.

[0023] In some embodiments, the flexible cushion further comprises a support adjusting mechanism for fixing the relative position of the second region and the first region.

[0024] In some embodiments, the support adjusting mechanism comprises a base fixed to the bottom of the first region, and the base is provided with a guide rail along the length direction; and an adjusting rod is arranged at the bottom of the second region, and one end of the adjusting rod is slidably connected with the guide rail.

[0025] In some embodiments, one end of the adjusting rod is slidably connected with the guide rail through a sliding sleeve, and the adjusting rod and the sliding sleeve are connected by a hinge.

[0026] In some embodiments, the sliding sleeve is further provided with a fastener for fixing the relative position of the sliding sleeve and the guide rail.

[0027] In some embodiments, the flexible cushion further comprises a support rod, and both ends of the support rod are connected with the adjusting rod and the base by hinges, respectively.

[0028] In some embodiments, the adjusting member is a connecting rod hinged to the elastic unit, one end of the connecting rod is hinged to a waist ring of the elastic unit, the waist ring is further provided with a first clamping groove for fixing the other end of the connecting rod, the bottom of the second area is provided with a second clamping groove for fixing the other end of the connecting rod, and the other end of the connecting rod can be switched between the first clamping groove and the second clamping groove, so that the elastic pad can be switched between the bending state and the flat lying state.

[0029] The support adjusting mechanism can also adopt the following structure, comprising: a base, a backrest frame rod and an arc-shaped guide rail; the arc-shaped guide rail is fixed to the base, and the backrest frame rod is in sliding fit with the arc-shaped guide rail, so as to change the included angle between the backrest frame and the horizontal plane by sliding the backrest frame rod along the extending direction of the arc-shaped guide rail, and part or all of the elastic units of the second area are arranged on the backrest frame rod.

[0030] The application also provides a sofa bed equipped with the elastic pad.

[0031] Compared with the prior art, the technical scheme of the application has the following beneficial effects:

[0032] The elastic module with adjustable distance between elastic units provided by the application realizes that the distance between the two elastic units increases when the two elastic units rotate relative to each other, and provides a space for rotation. When the two elastic units are in the same plane, the distance between the two elastic units also decreases. In this way, the feeling of collapse caused by the too large center distance of the elastic units when the elastic pad is in the flat lying state can be avoided, and the user experience is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] Fig. 1 is a schematic view of the elastic pad in the flat lying mode in the preferred embodiment 1 of the application;

[0034] Fig. 2 is a schematic view of the elastic pad in the backrest mode in the preferred embodiment 1 of the application;

[0035] Fig. 3 is a schematic view of the elastic pad when bent to the maximum angle in the preferred embodiment 1 of the application;

[0036] Fig. 4 is a schematic view of the connecting structure of the elastic unit with variable center distance in the folded state in the preferred embodiment 1 of the application;

[0037] Fig. 5 is a schematic view of the connecting structure of the elastic unit with variable center distance in the unfolded state in the preferred embodiment 1 of the application;

[0038] Fig. 6 is a schematic view of the elastic pad in the flat lying mode in the preferred embodiment 2 of the application;

[0039] Fig. 7 is a schematic view of the elastic pad in the backrest mode in the preferred embodiment 2 of the application;

[0040] Figure 8 is a schematic view of the flexible cushion in a flat position in accordance with a preferred embodiment 3 of the present application;

[0041] Figures 9-11 are schematic views of the flexing of the flexible cushion in accordance with a preferred embodiment 3 of the present application;

[0042] Figure 12 is a schematic view of the flexible cushion in a flat position in accordance with a preferred embodiment 4 of the present application;

[0043] Figures 13-14 are schematic views of the flexing of the flexible cushion in accordance with a preferred embodiment 4 of the present application;

[0044] Figure 15 is a schematic view of the flexible cushion in a flat position in accordance with a preferred embodiment 5 of the present application;

[0045] Figure 16 is a schematic view of the flexible cushion in a reclined position in accordance with a preferred embodiment 5 of the present application.

[0046] Figure 17 is a schematic view of the flexible cushion in a flat position in accordance with a preferred embodiment 6 of the present application;

[0047] Figure 18 is a schematic view of the flexible cushion in a reclined position in accordance with a preferred embodiment 6 of the present application;

[0048] Figures 19 and 20 are schematic views of the angle adjustment of the backrest frame in accordance with a preferred embodiment 6 of the present application;

[0049] Figure 21 is a schematic view of the flexible locking member in accordance with a preferred embodiment 6 of the present application;

[0050] Figure 22 is a top view of the base in accordance with a preferred embodiment 6 of the present application;

[0051] Figure 23 is a schematic view of the backrest frame in accordance with a preferred embodiment 6 of the present application;

[0052] Figure 24 is a schematic view of the flexible cushion in a flat position in accordance with a preferred embodiment 7 of the present application;

[0053] Figure 25 is a schematic view of the flexible cushion in a reclined position in accordance with a preferred embodiment 7 of the present application;

[0054] Figure 26 is a schematic view of the adjustment mechanism in accordance with a preferred embodiment 7 of the present application;

[0055] Figure 27 is a schematic view of the flexible cushion in a flat position in accordance with a preferred embodiment 8 of the present application;

[0056] Figure 28 is a schematic view of the flexible cushion in a reclined position in accordance with a preferred embodiment 8 of the present application;

[0057] Figures 29 and 30 are schematic views of the angle adjustment of the backrest frame in accordance with a preferred embodiment 8 of the present application; DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0059] In the description of the present application, it should be noted 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 present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0060] In the description of the present application, it should be noted 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 wall-mounted connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements, and for a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the embodiments, the elastic unit includes a cover, a base, a cloth sleeve and a flexible band connected between the cover and the base, a spring is arranged in the cloth sleeve or the flexible band, or is a spring directly. The distal end and the proximal end described in the embodiments refer to the two opposite ends of an object, which are respectively described for the two ends, and are not limited to the distance of the distal end and the proximal end.

[0061] Embodiment 1

[0062] Referring to FIG. 1-5, the present embodiment provides a flexible cushion applied to a sofa bed, comprising an array of elastic modules composed of elastic units 1; the array of elastic modules is divided into a first area and a second area, the elastic units 1 in adjacent rows in the first area and the second area are arranged as elastic units 2 with adjustable distance between the elastic units 1, the distance between the elastic units in adjacent rows in the second area is partially adjustable or fully adjustable. So that when the second area is bent relative to the first area, the distance between the elastic units 1 in the second area and the adjacent rows of the first area is increased. That is, the elastic units 1 in the row adjacent to the second area in the first area, and the elastic units 1 in the adjacent row adjacent to the first area in the second area, are arranged as elastic units 2 with adjustable distance between the elastic units 1. In this way, when the flexible cushion is bent, that is, when the flexible cushion is switched from a flat mode to a backrest mode, the distance between the elastic units 1 in the second area and the adjacent rows in the first area is increased, thereby providing space for bending. When the elastic units 1 in the adjacent rows of the first area and the second area are in the same plane, that is, when the flexible cushion is in a flat mode, the center distance of the elastic units 1 in the two areas is also reduced. In this way, the user's feeling of collapse caused by the center distance of the elastic units 1 being too large when the flexible cushion is in a flat state can be avoided, and the user experience can be effectively improved.

[0063] In the present embodiment, part of the elastic units 1 in the second area can also be arranged as elastic modules with adjustable distance between the elastic units 1. In this way, the second area is further divided into several sub-areas, and the sub-areas are also bendable, that is, the distance between the elastic units in multiple rows is adjustable. Through the expansion of multiple rows of elastic units, the angle range that can be adjusted by bending is further increased, or the expansion angle between adjacent rows is relatively small, which is convenient for user use and structural design.

[0064] The elastic module 2 with adjustable distance between the elastic units 1 in the present embodiment comprises at least two elastic units, one of which has a plug-in part at the waist, and the other of which has a plug-in part corresponding to the waist, the plug-in part has a long slot 23, and the plug-in part has a sliding block 22; the sliding block 22 moves in the long slot 23 to adjust the distance between the two elastic units 1.

[0065] Specifically, the elastic module 2 further comprises a connecting strip 21 fixedly connected to the elastic unit 1, and the two ends of the connecting strip 21 protrude outward from the two sides of the elastic unit 1 along the width direction; in this way, one end of the connecting strip 21 forms a plug-in part connected to the adjacent elastic unit 1, and the other end forms a plug-in part connected to the adjacent elastic unit 1.

[0066] One end of the connecting strip 21 is provided with a slider 22 as the plug-in part, and the other end is provided with a long slot 23 extending along the horizontal direction as the plug-in part; two elastic units 1 are connected to each other through the above-mentioned connecting structure 2, the slider 22 of one elastic unit 1 is placed in the long slot 23 of the other elastic unit 1, and has translational freedom in the direction of extending along the long slot 23, and has rotational freedom around the axis of the slider 22 itself.

[0067] In use, the user can drive the slider 22 to move along the long slot 23 by rotating the second area, so as to increase the center distance between the second area and the adjacent elastic unit 1 in the first area. When the elastic unit 1 in the second area is abutted against the upper end of the elastic unit 1 in the first area or reaches the farthest end of the long slot 23, the bending angle between the second area and the first area reaches the maximum value. At this time, if it is necessary to continue to adjust the bending angle, the adjustment of the bending part can be realized by rotating one or more sub-areas in the second area. In this way, the user can adjust the backrest part of the elastic pad to a suitable angle for use.

[0068] In order to provide support for the elastic units in the first area and the second area, the elastic pad of the embodiment further comprises a support adjusting mechanism for fixing the relative position of the second area and the first area.

[0069] Specifically, the bottom of the elastic unit in the first area is fixedly arranged on a base 3, and the base 3 is provided with a guide rail 4 along the length direction; the bottom of the elastic unit in the second area is arranged on an adjusting rod 5, and the bottom of the elastic unit in the second area is arranged on a bottom plate or a chassis, and the chassis is abutted against the adjusting rod 5, one end of the adjusting rod 5 is slidably connected with the guide rail 4; in order to realize the above-mentioned sliding connection, one end of the adjusting rod 5 is slidably connected with the guide rail 4 through a sliding sleeve 6; the adjusting rod 5 is hinged with the sliding sleeve 6. Therefore, in the process of driving the sliding sleeve 6 to move along the slide rail by the adjusting rod 5, the angle between the adjusting rod 5 and the sliding sleeve 6 also increases, and the adjusting rod 5 is fixedly connected with the second area, so that in the process of lifting the adjusting rod 5, the second area is also lifted relative to the first area, and the bending of the elastic pad is realized.

[0070] In addition, the sliding sleeve 6 is further provided with a fastener for fixing the relative position of the sliding sleeve 6 and the guide rail 4. In the embodiment, the fastener is a bolt 7, and the bolt 7 passes through the sliding sleeve 6 and abuts against the guide rail 4 by pressing the bolt 7, so as to fix the sliding sleeve 6 and the guide rail 4 together. When the bolt 7 is released, the bolt 7 leaves the insertion hole of the guide rail 4, and the sliding sleeve 6 can slide relative to the guide rail 4 freely.

[0071] Finally, the embodiment further comprises a side support rod 8, and the two ends of the side support rod 8 are respectively hinged with the adjusting rod 5 and the base 3.

[0072] Embodiment 2

[0073] Referring to Figs. 6 and 7, the difference between this embodiment and Embodiment 1 is that a linkage assembly is used in the distance-adjustable elastic module 2 in this embodiment to replace the connecting member and the connecting fitting member in Embodiment 1.

[0074] Specifically, the linkage assembly uses two hingedly formed V-shaped linkages to achieve the folding and unfolding of the connecting structure 2. In order to increase the stability when bending and support the second region, two sets of V-shaped linkages are provided. Specifically, the linkage assembly includes a first linkage 24 and a second linkage 25, one end of each of which is hingedly connected to the waist ring of two adjacent elastic units 1, and the other end of each of the first linkage 24 and the second linkage 25 is hingedly connected; the linkage assembly also includes a third linkage 26 and a fourth linkage 27, one end of each of which is hingedly connected to the base of two adjacent elastic units 1, and the other end of each of the third linkage 26 and the fourth linkage 27 is hingedly connected; the shaft of the third linkage 26 is hingedly connected to the shaft of the first linkage 24, and the shaft of the second linkage 25 is hingedly connected to the shaft of the fourth linkage 27.

[0075] As a simple alternative of this embodiment, the linkage assembly can also be provided in an X shape, a W shape, etc.

[0076] Embodiment 3

[0077] Referring to Figs. 8-11, the difference between this embodiment and Embodiment 1 is that a scissors assembly is used in the distance-adjustable elastic module 2 in this embodiment to replace the connecting member and the connecting fitting member in Embodiment 1. The elastic pad of this embodiment includes first regions 1, 11 at two ends, an elastic module 2 connecting the second regions of the two ends, and the elastic units in the elastic module 2 are connected to the elastic units of the first regions at the two ends by a scissors assembly.

[0078] The scissors assembly includes a first branch 28 and a second branch 29 hingedly connected in an X shape; the two ends of the first branch 28 are hingedly connected to the waist ring of one elastic unit 1 and the base of another elastic unit 1, respectively; the two ends of the second branch 29 are hingedly connected to the base of one elastic unit 1 and the waist ring of another elastic unit 1, respectively.

[0079] In some embodiments, the first branch 28 and the second branch 29 each include a first sub-branch 281, 291 in the shape of a T and a second sub-branch 282, 292 in the shape of a bar; one end of each of the first sub-branch 281, 291 and the second sub-branch 282, 292 is hingedly connected; and the first sub-branch 281, 291 in each of the first branch 28 and the second branch 29 is hingedly connected.

[0080] The scissors assembly can realize the adjustment of multiple angles. For example, when the second region starts to rotate relative to the first region, the first sub-arms 281, 291 of the T-shaped first sub-arms 281, 291 start to rotate. When the first sub-arms 281, 291 of the first sub-arms 28 and the second sub-arms 29 rotate to the maximum angle, the second sub-arms 282, 292 start to rotate relatively.

[0081] The bottom support adjustment mechanism of the elastic unit 1, 11 of the first region is similar to that of the first embodiment. Specifically, the bottom of the elastic unit of the first region is fixedly arranged on a base 3, the base 3 is provided with a guide rail 4 in an upward oblique direction; the distal end of the bottom of the elastic unit of the first region is hingedly connected to an adjustment rod 5, the other end of the adjustment rod 5 is slidably connected to the guide rail 4; pushing the adjustment rod 5 to slide upward, the distance between the elastic units of the scissors assembly is pulled out, the distal end of the first region is bent upward, forming a bent elastic pad.

[0082] Embodiment 4

[0083] Referring to FIGS. 12-14, the difference between this embodiment and the first embodiment is that the distance-adjustable elastic module 2 includes a strip-shaped connecting piece 20 connected to the waist rings of the two elastic units 1, the strip-shaped connecting piece 20 is provided with an arc-shaped sliding groove 201, one of the elastic units 1 is hingedly connected to the strip-shaped connecting piece 20, and the other elastic unit 1 is provided with a sliding block 202 arranged in the sliding groove 201; the sliding block 202 has an arc-shaped sliding space in the direction of extension of the sliding groove 201, and the sliding block slides along the arc-shaped guide in the sliding groove, driving the elastic unit 1 connected to the sliding block 202 to bend.

[0084] The base connecting mechanism of the first region 1, 11 at both ends of the elastic pad is similar to the embodiment.

[0085] Embodiment 5

[0086] Referring to FIGS. 15-16, the embodiment provides a bendable elastic pad, which includes an array of elastic units 1; the array of elastic units 1 has first regions at both ends and a second region 2 in the middle, the waist rings of adjacent elastic units 1 in the first regions and the second region are hingedly connected; the top cover 200 of the elastic unit 2 in the second region has a smaller width than the top cover 10 of the elastic unit 1 in the first region, so as to form a space between the adjacent elastic units 1 in the first regions and the second region for the elastic unit 2 in the second region to bend relative to the first region.

[0087] In order to fix the relative position of the first region and the second region, a two-section hinged connecting rod 13 is used in this embodiment, the waist rings of the elastic units 1 are connected together, and the first region elastic units 1, 11 at both ends are provided with a first clamping groove 14 fixed with one end of the connecting rod 13. The bottom of the distal end first region is also provided with a second clamping groove 15 fixed with the other end of the connecting rod 13.

[0088] In the lying mode, the connecting rod is in the collapsed state, and the two ends are respectively placed in the first clamping groove 14 of the waist of the two elastic units 1 in the distal end first region, as shown in FIG. 15, and in the second clamping groove 15 of the bottom of the distal end elastic unit. When the second region needs to be bent relative to the first region, the end of the connecting rod 13 placed in the second clamping groove 15 is removed from the second clamping groove 15, and then the connecting rod 13 is unfolded and placed in the first clamping groove 14 of the elastic unit 1 provided in the proximal end first region, so that the two ends of the first region are supported by the connecting rod 13.

[0089] Embodiment 6

[0090] Referring to FIGS. 17-24, this embodiment provides a bendable elastic pad 1 which is equipped with a support adjusting mechanism, so as to adjust the bending angle of the elastic pad through the adjusting mechanism.

[0091] The adjusting mechanism includes a base 3, a backrest frame rod 51 and an arc-shaped guide rail 33; the arc-shaped guide rail 33 is fixed to the base 31, and the backrest frame rod 51 is in sliding fit with the arc-shaped guide rail 33, so as to change the included angle between the backrest frame rod 51 and the horizontal plane by sliding the backrest frame rod 51 along the extending direction of the arc-shaped guide rail 33.

[0092] The bendable elastic pad 1 includes a soft pad and an array of elastic units, which are divided into a first region or mattress region 11 arranged on the base 3 and a second region or backrest region 12 linked with the backrest frame rod 51 according to the region. In this way, when the backrest frame rod 351 slides along the extending direction of the arc-shaped guide rail 33, the elastic units of the backrest region 12 also move relative to the elastic units of the mattress first region 1 or 11, thereby realizing the bending of the elastic pad. The distance between the elastic units of the second region or backrest region and the adjacent first elastic units is adjustable, and the distance between the elastic units in the second region or backrest region is adjustable. The structure of embodiment 1 or the technical solutions of the foregoing embodiments are adopted, which will not be repeated here.

[0093] To realize the flexible elastic pad 1 can be fixed at any bending angle, the above-mentioned adjusting mechanism further comprises a elastic locking member for fixing the relative position of the backrest frame rod 51 and the arc-shaped guide rail 33; the elastic locking member is switched from the locked state to the unlocked state under the action of external force; when the elastic locking member is in the locked state, the backrest frame rod 51 and the elastic locking member are limitedly matched along the extension direction of the arc-shaped guide rail 33; when the elastic locking member is in the unlocked state, the backrest frame rod 51 and the elastic locking member are released from the limited matching along the extension direction of the arc-shaped guide rail 33.

[0094] In the embodiment, the elastic locking member 34 comprises a positioning pin and a spring, one end of the spring is abutted on the base 3 to form a fixed end, and the other end is abutted on the positioning pin to form a movable end; when the elastic locking member 34 is in the unlocked state, the positioning pin compresses the spring to accumulate elastic restoring force.

[0095] In order to increase the stability during angle adjustment, the arc-shaped guide rail 33 is two, which are arranged in the width direction of the base 3; the elastic locking member 34 is arranged one by one corresponding to the arc-shaped guide rail 33, and the opposite sides of the two positioning pins are connected by a release rope 35, which pulls the positioning pin to compress the spring under the action of external force to move the elastic locking member 34 to the unlocked state. Corresponding to the arc-shaped guide rail 33, the backrest frame rod 51 in the embodiment is in the shape of a door, and the two vertical rods are respectively slidably matched with the arc-shaped guide rail 33.

[0096] In the embodiment, the backrest frame rod 51 comprises a roller 52

[0097] In addition, the embodiment further comprises a push-pull mechanism 36 for pushing or pulling the backrest frame 32 to move along the slide rail, and the push-pull mechanism 36 is used to pull the backrest frame rod 51; the push-pull mechanism can select the widely used electric push rod or hydraulic push rod or controllable gas spring in the prior art.

[0098] Embodiment 7

[0099] Referring to FIGS. 24-26, the difference between the embodiment and embodiment 6 is that: in the embodiment, the arc-shaped guide rail 33 is located above the plane on which the elastic unit array of the base 2 is placed, so that the arc-shaped guide rail 33 can be hidden inside the elastic unit array, which is more beautiful.

[0100] Embodiment 8

[0101] Referring to Figs. 27-30, the difference between this embodiment and embodiment 6 is that the backrest frame rod 51 in this embodiment is clamped on the arc-shaped guide rail 33 by a clamping mechanism 53, and the clamping mechanism 53 includes two pairs of rollers 52, each pair of rollers 52 is arranged on the two sides of the arc-shaped guide rail 33, and the two pairs of rollers 52 slideably clamp the backrest frame rod 51 on the arc-shaped guide rail 33, and the rollers 52 are fixed to the backrest frame at the shaft center.

[0102] The above merely describes preferred embodiments of the present application, but the design concept of the present application is not limited thereto, and any person skilled in the art can make non-essential changes to the present application within the technical scope disclosed by the present application, and such changes shall not be deemed to be within the scope of the present application. Industrial applicability

[0103] The present application provides a kind of elastic module with adjustable distance between elastic units, including at least two elastic units, one of which is provided with plug connector, and the other is provided with connector, the connector has a long slot, and the plug connector has a slider;The slider moves in the long slot, and adjusts the distance between two elastic units.The present application also provides a flexible elastic pad, including arrayed elastic units;The arrayed elastic units are at least divided into first area and second area;Wherein the adjacent elastic units in first area and second area are arranged as the elastic module described above.The present application also provides a sofa bed, equipped with the elastic pad described above, with industrial applicability.

Claims

1. An elastic module in which the distance between elastic units is adjustable, characterized by The elastic unit comprises at least two elastic units, one of which is provided with a plug, and the other is provided with a connector, the connector has a long slot, and the plug has a slider; the slider moves in the long slot to adjust the distance between the two elastic units.

2. The elastic module of claim 1, wherein, The connecting strip is fixedly arranged along the width direction of the elastic unit, and the two ends of the connecting strip protrude outward from the two sides of the elastic unit along the width direction; One end of the connecting strip is provided with the slider, and the other end is provided with the long slot; between the two elastic units, the slider of one elastic unit is placed in the sliding groove of the other elastic unit, and has translational freedom in the direction along the sliding groove, and has rotational freedom around the axis of the slider.

3. An elastic module with adjustable distance between elastic units, characterized in that The elastic unit comprises at least two elastic units, which are connected by a hinged connecting rod assembly; the connecting rod assembly is folded or unfolded to adjust the distance between the two elastic units.

4. The elastic module of claim 3, wherein, The connecting rod assembly is in V shape or X shape or W shape.

5. The elastic module of claim 4, wherein, The V-shaped connecting rod assembly comprises a first connecting rod and a second connecting rod, one end of which is hinged to the waist ring of the adjacent two elastic units, and the other end of the first connecting rod and the second connecting rod is hinged.

6. The elastic module of claim 5, wherein, The connecting rod assembly further comprises a third connecting rod and a fourth connecting rod, one end of which is hinged to the base of the adjacent two elastic units, and the other end of the third connecting rod and the fourth connecting rod is hinged. The rod body of the third connecting rod is hinged with the rod body of the first connecting rod, and the rod body of the second connecting rod is hinged with the rod body of the fourth connecting rod.

7. An elastic module with adjustable distance between elastic units, characterized in that The elastic unit comprises at least two elastic units, which are connected by a hinged scissors assembly; the scissors assembly is folded or unfolded to adjust the distance between the two elastic units.

8. The elastic module of claim 7, wherein, The scissors assembly comprises a first branch and a second branch hinged in X shape; the two ends of the first branch are respectively hinged with the waist ring of one elastic unit and the base of the other elastic unit; the two ends of the second branch are respectively hinged with the base of one elastic unit and the waist ring of the other elastic unit.

9. The elastic module of claim 8, wherein, The first branch and the second branch respectively comprise a T-shaped first sub-branch and a strip-shaped second sub-branch; one end of the first sub-branch and the second sub-branch is hinged; the first sub-branch in the first branch and the second branch is hinged.

10. An elastic module with adjustable distance between elastic units, characterized in that The elastic unit comprises at least two rows of elastic units, and a connecting piece connected between two elastic units in the two rows; the connecting piece is provided with an arc-shaped sliding groove in the waist of one of the elastic units, and the adjacent elastic unit is provided with a sliding block; the sliding block moves in the arc-shaped sliding groove to adjust the distance between the two elastic units.

11. The elastic module of claim 10, wherein, The sliding block has an arc-shaped sliding space in the direction along the sliding groove, and the sliding block slides along the arc-shaped guide in the sliding groove.

12. An elastic module with adjustable distance between elastic units, characterized in that The elastic unit comprises two end elastic units and a middle elastic unit, the elastic unit is provided with a waist ring, and the waist rings of adjacent elastic units are hinged; the width of the top end of the middle elastic unit is smaller than the width of the bottom cover or the middle part of the elastic unit, and a space is formed between the adjacent elastic units to make the two elastic units rotate and bend; a connecting rod is connected to the waist rings of the two end elastic units to support the bent elastic unit.

13. A bendable elastic pad comprising an array of elastic units; the array of elastic units is divided into at least a first region and a second region; characterized in that The adjacent elastic units in the first region and the second region, or the partial second region, are arranged as the elastic module of any one of claims 1-12, and the distance between the adjacent rows of elastic units in the first region and the elastic units of the partial second region is adjustable to form a space for the second region to bend relative to the first region.

14. A flexible cushion according to claim 13, wherein, The support adjustment mechanism is further provided to adjust the relative position of the elastic units of the second region and the elastic units of the first region.

15. A flexible cushion according to claim 14, wherein, The support adjustment mechanism is a base fixed at the bottom of the elastic units of the first region, and the base is provided with a guide rail along the length direction; the bottom of the second region is provided with an adjustment rod, and one end of the adjustment rod is in sliding connection with the guide rail.

16. A flexible cushion according to claim 15, wherein, One end of the adjustment rod is in sliding connection with the guide rail through a sliding sleeve; the adjustment rod and the sliding sleeve are hinged.

17. A flexible cushion according to claim 16, wherein, The sliding sleeve is further provided with a fastener for fixing the relative position of the sliding sleeve and the guide rail.

18. The flexible cushion of claim 15, wherein, The support adjustment mechanism further comprises a support rod, and two ends of the support rod are respectively hinged to the adjustment rod and the base.

19. The flexible cushion of claim 14, wherein, The elastic pad has two first regions at the two ends and a second region in the middle, and the waist rings of the adjacent elastic units in the first region and the second region are hinged; the support adjustment member is a connecting rod, one end of the connecting rod is hinged to the waist ring of the elastic unit of the proximal first region, and the other end of the connecting rod is connected to the waist ring of the elastic unit of the distal first region, thereby supporting the elastic unit of the distal first region to bend; when the connection between the connecting rod and the elastic units at both ends is released, the elastic pad returns to the flat state.

20. The flexible cushion of claim 14, wherein, The support adjustment mechanism comprises a base, a backrest frame rod and an arc-shaped guide rail; the arc-shaped guide rail is fixed to the base, and the backrest frame rod is in sliding connection with the arc-shaped guide rail, so that the angle between the backrest frame and the horizontal plane is changed by sliding the backrest frame rod along the direction in which the arc-shaped guide rail extends, and the partial or all elastic units of the second region are arranged on the backrest frame rod.

21. A bendable resilient mat according to claim 20, wherein: The support adjustment mechanism further comprises an elastic locking member for fixing the relative position of the backrest frame rod and the arc-shaped guide rail. The elastic locking member comprises a positioning pin and a spring, one end of the spring is abutted on the base to form a fixed end, and the other end is abutted on the positioning pin to form a movable end; in the unlocked state of the elastic locking member, the positioning pin is compressed on the outer surface of the backrest frame rod by the compressed spring; in the locked state of the elastic locking member, the positioning pin is inserted into the backrest frame rod.

22. A bendable resilient mat according to claim 21, wherein: The arc-shaped guide rail is provided in two, and the two arc-shaped guide rails are arranged in a spaced manner along the width direction of the base; the elastic locking member is arranged in one-to-one correspondence with the arc-shaped guide rail, and the two positioning pins are connected through a release rope on the side facing each other, and the release rope pulls the positioning pin to compress the spring under the action of external force, so that the elastic locking member moves to the unlocked state.

23. The flexible cushion of claim 4, wherein: The backrest frame rod is in the shape of a door, and the two vertical rods of the backrest frame rod are in sliding connection with the arc-shaped guide rails, respectively.

24. The bendable cushion of claim 20, wherein: The backrest frame comprises rollers in sliding connection with the arc-shaped guide rails.

25. A bendable resilient mat according to claim 20, wherein: The backrest frame rod is clamped on the arc-shaped guide rail by a clamping mechanism, and the clamping mechanism comprises two pairs of rollers, and one pair of rollers 52 is arranged on both sides of the arc-shaped guide rail.

26. A flexible cushion according to any one of claims 20-25, wherein: The support adjustment mechanism further comprises an electric push rod or a controllable gas spring for pushing or pulling the backrest frame to move along the sliding rail.

27. A sofa bed characterized in that An elastic pad according to any one of claims 13-26 is assembled.

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