CN202567262U

CN202567262U - Sofa bed

Info

Publication number: CN202567262U
Application number: CN 201220138546
Authority: CN
Inventors: 蔡泓钧
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-05
Filing date: 2012-04-05
Publication date: 2012-12-05
Anticipated expiration: 2022-04-05

Abstract

The utility model discloses a sofa bed. The sofa bed can be transformed into a dual-layer bed with an upper berth and a lower berth from the sofa form. The sofa bed comprises a basic structure, a lower berth mechanism and an upper berth mechanism, wherein the basic structure is provided with a substrate frame and a back frame, and the back frame is fixedly and vertically arranged at the rear side of the substrate frame; the lower berth mechanism is provided with a lower bed component and a four-bar mechanism, the lower bed component is arranged on the substrate frame through the four-bar mechanism and can move to the position of the lower berth form from the position of the sofa form; the upper berth mechanism is provided with an upper bed component and a turnover support mechanism, the upper bed component is provided with a seat surface and a bed surface, in the sofa form, the upper bed component is folded on the lower bed component and the seat surface faces upwards, the lower bed component is firstly lifted to a turnover height through the turnover support mechanism, the upper bed component is then overturned to be in the upper berth form, in the lifting and overturning process, the turnover support mechanism also moves the lower berth mechanism to the position of the lower berth form in a linkage manner.

Description

Divan

Technical field

The utility model relates to a kind of divan, particularly a kind of divan that can be launched to become upper berth and lower berth form by the sofa form.

Background technology

As its name suggests; A kind of sofa that both can be used as of divan also can be used as the furniture that bed uses, and uses the reason of divan to have many kinds, and is still relevant with the utilization in space basically; Because divan has sofa and two kinds of purposes of bed; And when the sofa form, can dwindle occupation space again, limited or pay attention to for the user of personal space for the space, real is a kind of furniture of practicality.

Known divan has many different designs and moulding; Wherein a kind of is to adopt two cushion and back cushions as the sofa chair back of repeatedly putting each other together to form; Two cushions that stack togather each other normally utilize cloth or the surfacing of sofa links together; Repeatedly as seat, the cushion of below is as sofa seat support or chair pin when the sofa form for up cushion; When becoming bed, the cushion that the cushion of top is opened with the below lies against ground simultaneously, back cushion is shakeout simultaneously just to have become the bed shop on ground again; The structure of this divan is very simple, when expanding into bed and use, possibly have partly as seat or the part of bed surface and to share, and makes seat become the part of bed surface, obviously health not too; When expanding into the bed use, there is most surface can paste the surface that is put in ground and has made divan easily dirty, even if when mobile, may make the surperficial impaired of divan because of carelessness again.

A kind of in addition known divan structure, when the sofa form, the cushion that is positioned at the below is provided with the chair pin; Can avoid the bottom surface kiss the earth of divan and then made dirty or impaired, but this divan can be provided with handrail usually, handrail is except providing support the function of arm when the sofa form; When expanding into the bed form; Can utilize handrail as another cabinet base partly or the supporter of bed bottom again, therefore, still make dirty easily or sustain damage in the surface of handrail.

Known divan kind and size are numerous; Narrower after launching, can be used as single bed, broad after expansion, can be used as double bed, the divan of especially deployable one-tenth double bed; Though can supply two people to use, still need enough roomy plane space to place; On the other hand; The divan of known major part all can't become the double-deck bed with upper berth and lower berth; If divan can launch to become the double-deck bed with upper berth and lower berth; For the user that enough two people of the limited needs again of plane space use, should be able to satisfy the demand that the user makes full use of the space.

Summary of the invention

The utility model technical problem to be solved is: to the problem of divan in the above-mentioned prior art and for the needs of Kong Jian Li Lu; A kind of divan that can be become upper berth and lower berth form by the sofa model deformation is provided, is fit to the limited and user of the enough two people uses of needs again of plane space; This divan is operated easily, and is to adopt the upwards design of expansion, does not need too big plane space just can use.

In order to solve the problems of the technologies described above; The technical scheme that the utility model adopted is: a kind of divan, can change the bunk beds of upper berth and lower berth form by the sofa form into, and comprise foundation structure; This foundation structure has substrate frame and back of the body frame, the fixing upright rear side of being located at this substrate frame of this back of the body frame; Be characterized in: also comprise lower berth mechanism and upper berth mechanism, wherein:

This lower berth mechanism has group of leaving the bed and quadric chain; This quadric chain comprises first connecting rod, second connecting rod, third connecting rod and the 4th connecting rod; This group of leaving the bed is installed on this substrate frame through this quadric chain, and this group of leaving the bed can move to the position of this lower berth form from the position of this sofa form;

This upper berth mechanism has group of going to bed and upset supporting mechanism; This group of going to bed has seat and bed surface; When this sofa form, this group of going to bed repeatedly places on this group of leaving the bed and this seat makes progress, and this group of leaving the bed is lifted to a turning height earlier by this upset supporting mechanism; Again this group upset of going to bed is become this upper berth form that this bed surface makes progress, this upset supporting mechanism also can this lower berth mechanism of interlock moves to the position of this lower berth form in the process of lifting upset.

The said group of leaving the bed comprises cushion and following bedstead; These both sides of leaving the bed group have this quadric chain; This time bedstead is installed on this substrate frame through this quadric chain, makes this group of leaving the bed can move to the position of this lower berth form from the position of this sofa form, again; This first connecting rod is served as by this substrate frame; This second connecting rod is served as by this time bedstead, and the two ends of this third connecting rod and the 4th connecting rod are respectively with this first connecting rod and this second connecting rod is rotating is articulated, and this first connecting rod is parallel with this second connecting rod.

The said group of going to bed has two-sided cushion and bed frame; Bigger surface, the relative both sides of this two-sided cushion is respectively as seat and upper berth bed surface; This group of going to bed is repeatedly put above this group of leaving the bed during the sofa form, and this seat of this two-sided cushion becomes the seat of sofa up, when this divan expands into this upper berth and lower berth form; This upper berth bed surface of this two-sided cushion can overturn and become the bed surface on upper berth up and supply the user to doss; Wherein this seat and this upper berth bed surface can be selected the material different manufacturing respectively for use, and the front side of this bed frame is equiped with preceding side shield, and the front side plate washer is to extending below to shelter from this group of leaving the bed of this lower berth mechanism.

Said upset supporting mechanism comprises front support rod and back supporting component; The rotating position that is articulated in this substrate frame near this divan leading edge, the bottom of this front support rod; The top of this front support rod is rotating to be articulated in this bed frame side and near the rearward position of this group of going to bed; At the rotating trace that is articulated with in position near the bottom of this front support rod; The rotating middle that is articulated in the 4th connecting rod in this quadric chain of the other end of this trace; Can expand in the process of upper berth and lower berth form in this group of going to bed of this upper berth mechanism of pulling, can utilize this front support rod and this trace interlock quadric chain, this group of leaving the bed of this lower berth mechanism is moved to the position of this lower berth form; This back supporting component comprises diarthrosis mechanism, the first power-assisted assembly, the second power-assisted assembly and last support arm; This diarthrosis mechanism has the substrate that lays respectively at this divan left and right sides, leans against bracing frame and three pivoting points; This leans against the support that bracing frame is made up of rod member; These two ends that lean against bracing frame are fixedly connected respectively in this substrate of this divan left and right sides; The end that should go up support arm is fixed in this substrate, the rotating centre position that is articulated in this bed frame side of the front end of support arm on this; The rotating position that is articulated in this back of the body frame near the top of the 3rd pivoting point among three pivoting points of this of this diarthrosis mechanism, this first pivoting point and the rotating respectively end of exerting oneself that is articulated in exert oneself end and this second power-assisted assembly of this first power-assisted assembly of this second pivoting point; Rotating one the 4th pivoting point that is articulated in this back of the body frame of the other end of this first power-assisted assembly, the rotating Wushu contact that is articulated in this back of the body frame of the other end of this second power-assisted assembly; Again, this first power-assisted assembly and this second power-assisted assembly are the Power Components that can make axially reciprocating, and this first power-assisted assembly and this second power-assisted assembly pressure accumulation type hydraulically extensible bar that is closed, to produce axial thrust.

Said divan also has back cushion; This back cushion is fixed on the surface of sofa back of the body lid with slide fastener or devil's felt; This sofa back of the body covers the bracing frame that leans against that is installed in this upper berth mechanism with connection assembly, and these two ends that lean against bracing frame are separately fixed at upward this support arm of the left and right sides of this divan.

Said divan also has backboard, left handrail and right handrail; This backboard is installed on this back of the body frame with coupling unit; This left side handrail and this right side handrail also are installed on this substrate frame of this divan left and right sides with this coupling unit, this coupling unit is that dovetail groove and dovetail block are formed.

Said upper berth mechanism also has the left guardrail and the right guardrail of the left and right sides of the bed frame of being located at this group of going to bed; This left guardrail and this right guardrail are installed on the left and right sides of this bed frame with hinge; But this upper berth mechanism also has the folding or the ladder of expansion; This ladder is a parallel four-bar linkage; Have a pair of first parallel longitudinal rod, second longitudinal rod and several transverse links between this first longitudinal rod and this second longitudinal rod; Those connecting rods are rotating to each other to be articulated, the rotating front side that is articulated in this bed frame of pivoting point of this first longitudinal rod and this second longitudinal rod, this first longitudinal rod and this second longitudinal rod can with this pivoting point be pivot and this whole transverse links be rocked to together one with the green collapsed position of aliging of the front side edge of this bed frame.

Said upper berth mechanism also have can with the preceding side rail of this ladder interlock together; Should preceding side rail be parallel four-bar linkage; Comprise drive connecting rod, passive connecting rod and tranverse connecting rod; The rotating forward position that is articulated in this bed frame in the centre of this drive connecting rod, the tail end of this drive connecting rod is connecting this second longitudinal rod, and this second longitudinal rod has same pivoting point with this drive connecting rod; The rotating forward position that is articulated in this bed frame in the bottom of this passive connecting rod, the rotating top that is articulated in this drive connecting rod and this passive connecting rod respectively, the two ends of this tranverse connecting rod.

Said lean against bracing frame two ends be separately fixed at this substrate of laying respectively at this divan left and right sides in this diarthrosis mechanism than rearward position.

Said upper berth mechanism has liftable bed frame; This liftable bed frame has a compound parallel four-bar linkage and a guide mechanism in this group position, the left and right sides of going to bed respectively; This compound parallel four-bar linkage has parallel four connecting rods with second of first parallel four connecting rods of two shared connecting rods; The first connecting rod of these first parallel four connecting rods is fixed in the side of this bed frame; The second connecting rod of these first parallel four connecting rods is parallel with this first connecting rod, rotating this first connecting rod and this second connecting rod of being articulated in respectively in the two ends of the third connecting rod of these first parallel four connecting rods and the 4th connecting rod, and these second parallel four connecting rods are shared this second connecting rod with these first parallel four connecting rods; The two ends of the first connecting rod of these second parallel four connecting rods are gone up the support arm pivot joint with this front support rod of this upset supporting mechanism with being somebody's turn to do respectively; The third connecting rod of these second parallel four connecting rods and rotating this first connecting rod and this second connecting rod that is articulated in these second parallel four connecting rods respectively in the two ends of the 4th connecting rod, an end of this first connecting rod of these second parallel four connecting rods also is set with guide bar, and this guide bar is vertical with this first connecting rod of these second parallel four connecting rods; This guide bar has guide channel; The tail end of this first connecting rod of these first parallel four connecting rods has the protruded stigma that can in this guide channel, slide, and the centre position of this second connecting rod has outstanding force column, and support arm has the force arm of extension on this; This force arm has the driving ditch of arc, and this force column can penetrate this driving ditch just.So, when divan expands into upper berth and lower berth form, can make the user in lower berth have more roomy head space, the also unexpected head that collides of unlikely generation constriction further with the upwards rising of height of the group of going to bed.

Description of contents by above the utility model can be understood, and this divan and known divan are compared following several the advantages of obvious tool:

1, this divan can be become the divan of upper berth and lower berth form by the sofa model deformation, is fit to the limited and user of the enough two people uses of needs again of plane space.

2, the foundation structure of this divan has the substrate frame, can support the group of leaving the bed of divan, avoids leaving the bed groups of contact ground and is made dirty or impaired.

3, the upper berth mechanism of this divan design of adopting reversible, the seat when the sofa form can not shared with the bed surface of upper berth form, do not have the problem of health aspect.

4, but the upper berth mechanism of this divan also has guardrail and the folding or the ladder of expansion of being located at bedside, has safety and effect easily.

Other effect and the embodiment of relevant the utility model will cooperate graphic explanation following.

Description of drawings:

Figure 1A is the structural map of first embodiment of the utility model, shows that divan is launched into the D structure of upper berth and lower berth form.

Figure 1B is the planar side view of Figure 1A.

Fig. 2 is the routine structural map that first of the utility model is implemented, and shows the D structure of divan in the sofa form.

Fig. 3 is the operation chart of first embodiment structure of the utility model, shows the situation that back cushion is taken down.

Fig. 4 A is the operation chart of first embodiment structure of the utility model, shows back cushion is taken down structure afterwards.

Fig. 4 B is the planar side view of Fig. 4 A.

Fig. 5 A is the operation chart of first embodiment structure of the utility model, shows the group of going to bed of upper berth mechanism is gently drawn resupinate situation simultaneously towards user's direction.

Fig. 5 B is the planar side view of Fig. 5 A.

Fig. 6 A is the operation chart of first embodiment structure of the utility model, shows the group of going to bed of upper berth mechanism is gently drawn resupinate situation simultaneously towards user's direction.

Fig. 6 B is the planar side view of Fig. 6 A.

Fig. 6 C is the operation chart of first embodiment structure of the utility model, along the action of continuous Fig. 6 A, shows the group of going to bed of upper berth mechanism is gently drawn resupinate situation towards user's direction.

Fig. 6 D is the planar side view of Fig. 6 C.

Fig. 7 A is the first embodiment structural map of the utility model, shows that divan is launched into after upper berth and the lower berth form, the D structure that two side guardrails are opened.

Fig. 7 B is the planar elevation view of Fig. 7 A.

Fig. 7 C is the planar side view of Fig. 7 A.

Fig. 8 A is the first embodiment structural map of the utility model, shows that divan is launched into after upper berth and the lower berth form, the D structure that two side guardrails and ladder are opened.

Fig. 8 B is the planar elevation view of Fig. 8 A.

Fig. 8 C is the planar side view of Fig. 8 A.

Fig. 9 is the first embodiment structural map of the utility model, shows that sofa back of the body lid is installed in the position relation that leans against bracing frame.

Figure 10 is the first embodiment structural map of the utility model, shows the detachable situation of separating of backboard, left handrail and right handrail.

Figure 11 is the structural map of Figure 10 at another visual angle.

Figure 12 is the second embodiment structural map of the utility model, shows the structure that leans against bracing frame of improvement.

Figure 13 is the 3rd embodiment structural map of the utility model, shows that upper berth mechanism has the structure of a kind of liftable bed frame in the sofa form.

Figure 14 is the operation chart of Figure 13, shows that gently drawing the while interlock to go to bed towards user's direction the group of going to bed of upper berth mechanism organizes the situation that rises gradually.

Figure 15 is the operation chart of Figure 13, shows that divan is launched in upper berth and the lower berth form, the raised situation of the group of going to bed.

Label declaration:

11 ... Substrate frame 12 ... Back of the body frame

21 ... Leave the bed and organize 211 ... Cushion

212 ... Following bedstead 22 ... Quadric chain

221 ... First connecting rod 222 ... Second connecting rod

223 ... Third connecting rod 224 ... The 4th connecting rod

31 ... Go to bed and organize 32 ... Two-sided cushion

321 ... Seat 322 ... The upper berth bed surface

33 ... Bed frame 34 ... Preceding side shield

35L ... Left guardrail 35R ... Right guardrail

351 ... Hinge 41 ... Front support rod

42 ... Trace 43 ... The first power-assisted assembly

44 ... The second power-assisted assembly 45 ... Last support arm

450 ... Last support arm 451 ... Force arm

452 ... Drive ditch 46 ... Substrate

47A ... Lean against bracing frame 47 ... Lean against bracing frame

481 ... First pivoting point 482 ... Second pivoting point

483 ... The 3rd pivoting point 484 ... The 4th pivoting point

485 ... Wushu contact 50 ... Back cushion

51 ... The sofa back of the body covers 52 ... Backboard

53L ... Left side handrail 53R ... Right handrail

541 ... Dovetail groove 542 ... Dovetail block

60 ... Ladder 61 ... First longitudinal rod

62 ... Second longitudinal rod 63 ... Transverse link

64 ... Preceding side rail 641 ... Drive connecting rod

642 ... Passive connecting rod 643 ... Tranverse connecting rod

644 ... Tail end 70 ... Liftable bed frame

71A ... The first parallel four connecting rod 71B ... Second parallel four connecting rods

A ... Pivoting point C1 ... The joint

C2 ... Joint A1 ... First connecting rod

A2 ... Second connecting rod A3 ... Third connecting rod

A4 ... The 4th connecting rod B1 ... First connecting rod

B3 ... Third connecting rod B4 ... The 4th connecting rod

B5 ... Guide bar B51 ... Guide channel

A11 ... Protruded stigma A21 ... Force column

L ... The safety arrestment lock

The specific embodiment:

The divan that the utility model proposes can be changed into the bunk beds (seeing Figure 1A) of upper berth and lower berth form by sofa form (see figure 2), and the structure of first embodiment of the utility model shown in Figure 1A and Figure 1B, comprising:

Foundation structure has substrate frame 11 and back of the body frame 12, the back of the body frame 12 fixing upright rear sides of being located at substrate frame 11;

Lower berth mechanism having group of leaving the bed 21 and quadric chain 22, and the group 21 of leaving the bed is installed on substrate frame 11 by quadric chain 22, and the group 21 of leaving the bed can move to the position of lower berth form from the position of sofa form; With

Upper berth mechanism; Have group of going to bed 31 and upset supporting mechanism, the group 31 of going to bed has seat and bed surface, when the sofa form; The group 31 of going to bed repeatedly places on the group 21 of leaving the bed and seat makes progress; The group 21 of leaving the bed can be lifted to a turning height earlier by the upset supporting mechanism, and the group of will going to bed again 21 upsets become the upper berth form that bed surface makes progress, and the upset supporting mechanism also can interlock lower berth mechanism moves to the position of lower berth form in the process of lifting upset.

According to a kind of embodiment of the utility model, the embodiment detailed construction of foundation structure wherein is shown in Figure 1A; Substrate frame 11 is the main support structures as divan with the function of back of the body frame 12, and the weight of burden divan also is supported on a liftoff position, a kind of embodiment structure that in Figure 1A, discloses with divan; Be to select the metal frame manufacturing for use; But be not as limit, if select for use other firm material such as wood materials also can, can certainly metal and wood materials and using.

The embodiment structure of lower berth mechanism has group of leaving the bed 21 and quadric chain 22; The group 21 of leaving the bed comprises cushion 211 and following bedstead 212; Cushion 211 is the abundant cushions of a kind of softness; When divan expanded into upper berth and lower berth form, cushion 211 promptly supplied the user to doss as the bed surface in lower berth, and following bedstead 212 is positioned at the below of cushion 211 in order to support cushion 211; Both sides branch in the group 21 of leaving the bed has quadric chain 22; The both sides of the group 21 of leaving the bed particularly are meant the left and right sides of sofa or the two ends end to end of the group 21 of leaving the bed, and following bedstead 212 is installed on substrate frame 11 by quadric chain 22, make the group 21 of leaving the bed can move to the position (seeing Figure 1A and Figure 1B) of lower berth form from the position (seeing Fig. 4 A and Fig. 4 B) of sofa form; Embodiment shown in Figure 1A and Figure 1B; Quadric chain 22 comprises first connecting rod 221, second connecting rod 222, third connecting rod 223 and the 4th connecting rod 224, and wherein first connecting rod 221 is served as by substrate frame 11, and second connecting rod 222 is served as by following bedstead 212; The two ends of third connecting rod 223 and the 4th connecting rod 224 are articulated with rotating relation with first connecting rod 221 and second connecting rod 222 respectively; First connecting rod 221 is parallel with second connecting rod 222, therefore, and the position when the sofa form; Following bedstead 212 is to adhere on the substrate frame 11; Divan is unfolded in upper berth and the lower berth form, because the effect of quadric chain 22, following bedstead 212 can be by third connecting rod 223 with the 4th connecting rod 224 lifts and summary is moved (promptly the left to Figure 1B moves) to the place ahead of sofa direction with cushion 211.

Upper berth mechanism has group of going to bed 31 and upset supporting mechanism, and the group 31 of going to bed has a kind of two-sided cushion 32 and bed frame 33; Two-sided cushion 32 is the abundant cushions of a kind of softness; Use as seat 321 and upper berth bed surface 322 respectively on bigger surface, the relative both sides of two-sided cushion 32, and during the sofa form, the group 31 of going to bed is repeatedly put above the group 21 of leaving the bed; The seat 321 of two-sided cushion 32 becomes the seat (seeing Fig. 2 and Fig. 4 B) of sofa up; When divan expanded into upper berth and lower berth form, 322 of the upper berth bed surfaces of two-sided cushion 32 can overturn and become the bed surface on upper berth up and supply the user to doss, according to the structure of present embodiment; Seat 321 can be selected the material different manufacturing respectively for use with upper berth bed surface 322, to meet the demand of sitting and crouching two kinds of different purposes; Bed frame 33 is that firm framework is used to carry two-sided cushion 32; A kind of embodiment structure that in Figure 1A and Figure 1B, discloses is to select made for use, but is not as limit, if select for use other firm material such as wood materials also can, can certainly metal and wood materials and usefulness.

A kind of embodiment according to the utility model; Side shield 34 before wherein also being equiped with in the front side (when referring to the sofa form, the front side of divan) of bed frame 33, front side plate washer 34 is to extending below the group 21 of leaving the bed that can shelter from lower berth mechanism; Make divan when the sofa form, have a clean and tidy outward appearance; When divan was launched into upper berth and lower berth form, 34 of front side plate washers can turn to the rear side of the upper berth bed surface 322 of upper berth form, provided to prevent the security protection (seeing Figure 1A and Figure 1B) dropped.

The major function of upset supporting mechanism is that divan expands in the form of upper berth; The group 31 of going to bed is upwards lifted simultaneously the go to bed two-sided cushion 32 of group 31 of upset; Make the bed surface on upper berth bed surface 322 upsets the becoming upper berth of two-sided cushion 32 supply the user to doss up; Make seat 321 and upper berth bed surface 322 can not share, meet the standard of health.

Both sides in the group of going to bed all are provided with the upset supporting mechanism, and the both sides of the group of going to bed particularly are meant the left and right sides of sofa or the two ends end to end of the group of going to bed, and are that example is explained as follows with the upset supporting mechanism shown in Figure 1B.

The upset supporting mechanism comprises front support rod 41 and back supporting component; The bottom of front support rod 41 is articulated in the position (see left side in Figure 1B) of substrate frame 11 near the divan leading edge with rotating relation; The top of front support rod 41 is articulated in bed frame 33 sides with rotating relation and near group 31 the rearward position of going to bed; The rearward position of the group 31 of particularly going to bed is meant the rear side (see Fig. 4 B) of divan when the sofa form; But when divan expanded into upper berth and lower berth form, the position that the top of front support rod 41 and bed frame 33 are articulated in bed frame 33 sides can become the leftward position in Figure 1B because of the upset of the group 31 of going to bed.Position near the bottom of front support rod 41 also is articulated with trace 42 with rotating relation; The other end of trace 42 is articulated in the middle of the 4th connecting rod 224 in the quadric chain 22 with rotating relation; Can expand in the process of upper berth and lower berth form in the group 31 of going to bed that spurs upper berth mechanism by this; Can utilize front support rod 41 and trace 42 interlock quadric chains 22, the group 21 of leaving the bed of lower berth mechanism moved to the position of lower berth form.

The back supporting component of upset supporting mechanism comprises: diarthrosis mechanism, the first power-assisted assembly 43, the second power-assisted assembly 44 and last support arm 45; Diarthrosis mechanism has the substrate 46 that lays respectively at the divan left and right sides, leans against bracing frame 47 and three pivoting points; Leaning against bracing frame 47 is a kind of supports of being made up of rod member; The two ends that lean against bracing frame 47 are fixedly connected respectively in the substrate 46 of the divan left and right sides; One end of last support arm 45 is fixed in substrate 46, and the front end 450 of last support arm 45 is articulated in the centre position of bed frame 33 sides with rotating relation; The 3rd pivoting point 483 among three pivoting points of diarthrosis mechanism is articulated in the position of back of the body frame 12 near the top with rotating relation, and first pivoting point 481 and second pivoting point 482 are articulated in the end of exerting oneself of the exert oneself end and the second power-assisted assembly 44 of the first power-assisted assembly 43 respectively with rotating relation; The other end of the first power-assisted assembly 43 is articulated in the 4th pivoting point 484 of back of the body frame 12 with rotating relation; The other end of the second power-assisted assembly 44 is articulated in the Wushu contact 485 of back of the body frame 12 with rotating relation; The first power-assisted assembly 43 and the second power-assisted assembly 44 all are a kind of Power Components that can make axially reciprocating; The embodiment structure of Figure 1A and Figure 1B; The first power-assisted assembly 43 and the second power-assisted assembly 44 all are a kind of hydraulic packages; Particularly be a kind of pressure accumulation type hydraulically extensible bar of closed, can produce axial thrust, promote first pivoting point 481 and second pivoting point 482 respectively by the axial thrust of the first power-assisted assembly 43 and the second power-assisted assembly 44; With and to make substrate 46 and last support arm 45 can be that the center rotates with first pivoting point 481, and utilize and go up support arm 45 group 31 of will going to bed and be supported on (containing two-sided cushion 32 and bed frame 33) position of upper berth form; Embodiment according to the utility model; Wherein the first power-assisted assembly 43 and the second power-assisted assembly 44 also can be replaced by electric screw mechanism; When expanding into upper berth and lower berth form at divan; Suitable augmented thrust is provided, makes the user comparatively laborsaving in the operating process that launches divan.

The structure of the divan of the utility model when the sofa form is as shown in Figure 2; The group 31 of going to bed is repeatedly put above the group 21 of leaving the bed; The seat of two-sided cushion 32 becomes the seat (seeing Fig. 2 and Fig. 4 B) of sofa up; Divan also has back cushion 50; Back cushion 50 utilizes a kind of engagement means (such as but not limited to wherein any of slide fastener or devil's felt) to be fixed on the sofa back of the body and covers 51 surperficial (see figure 3); Use with the chair back of back cushion 50 as sofa; The sofa back of the body cover 51 can utilize that connection assembly (such as but not limited to wherein any of bolt, trip or latch) is installed in upper berth mechanism lean against bracing frame 47 (see figure 9)s, the two ends that lean against bracing frame 47 wherein are separately fixed at the last support arm 45 of the left and right sides of divan, are to utilize bolt to pass sofa to carry on the back and cover three perforation of 51 and be installed on and lean against bracing frame 47 at a kind of embodiment of Figure 10; This divan also has backboard 52, left handrail 53L and right handrail 53R; Backboard 52 is installed on the substrate frame 11 (seeing Figure 10 and Figure 11) that back of the body frame 12, left handrail 53L and right handrail 53R also can be installed on the left and right sides of divan by identical coupling unit by a kind of coupling unit; The loading and unloading of backboard 52, left handrail 53L and right handrail 53R for ease, coupling unit can be selected the for example dovetail groove shown in Figure 11 541 and dovetail block 542 or other equivalent elements for use.

The expansion process of relevant the utility model divan, explain as follows:

At first, back cushion 50 is taken off (see figure 3), takes off structure after the back cushion 50 shown in Fig. 4 A and Fig. 4 B, for the ease of position and the action of understanding each assembly, among Fig. 4 A and Fig. 4 B with sofa carry on the back cover 51 and left handrail 53L be represented by dotted lines;

Then the user stands in the place ahead (sofa form) of divan, and the application of force is gently drawn simultaneously upwards upset (shown in Fig. 5 A and Fig. 5 B) with the group 31 of going to bed of upper berth mechanism (containing two-sided cushion 32, bed frame 33 and preceding side shield 34) towards user's direction;

Continue the group 31 of going to bed of pulling upper berth mechanism, the upper berth bed surface 322 of two-sided cushion 32 can begin turning in this process, and the process of upset is shown in Fig. 6 A, Fig. 6 B, Fig. 6 C, Fig. 6 D, Fig. 7 A and Fig. 7 B.

When divan is launched into upper berth and lower berth form (seeing Figure 1A and Figure 1B), the bed surface that the upper berth bed surface 322 of two-sided cushion 32 can upset becomes the upper berth up supplies the user to doss, and makes seat 321 and upper berth bed surface 322 can not share, and meets the standard of health.

According to one of embodiment of this divan; Upper berth mechanism wherein also has the guardrail (seeing Fig. 8 A) of being located at group 31 sides of going to bed; The left guardrail 35L and the right guardrail 35R that comprise the left and right sides of the bed frame 33 of being located at the group 31 of going to bed; Left guardrail 35L and right guardrail 35R are installed on the left and right sides of bed frame 33 by hinge 351, and when the sofa form, left guardrail 35L and right guardrail 35R attach by hinge 351 upsets and be accommodated in upper berth bed surface 322.

According to one of embodiment of this divan; But upper berth mechanism wherein also has a folding (seeing Fig. 7 A, Fig. 7 B and Fig. 7 C) or the ladder 60 (seeing Fig. 8 A, Fig. 8 B and Fig. 8 C) that launches; Ladder 60 is a kind of parallel four-bar linkages; Have a pair of parallel first longitudinal rod 61, second longitudinal rod 62 and several transverse links 63 between first longitudinal rod 61 and second longitudinal rod 62; These connecting rods are articulated with rotating relation to each other; The pivoting point of first longitudinal rod 61 and second longitudinal rod 62 is articulated in the front side (front side under the sofa form) of bed frame 33 with rotating relation, first longitudinal rod 61 and second longitudinal rod 62 can be with the pivoting point pivot and whole transverse links 63 be rocked to together one with the green collapsed position of aliging of the front side edge of bed frame 33 (shown in Fig. 7 A).

According to one of embodiment of this divan, upper berth mechanism wherein also have can with the preceding side rail 64 of ladder 60 interlock together, preceding side rail 64 also is a kind of parallel four-bar linkage; Comprise drive connecting rod 641, passive connecting rod 642 and tranverse connecting rod 643; The centre of drive connecting rod 641 is articulated in the forward position of bed frame 33 with rotating relation, and the tail end 644 of drive connecting rod 641 is connecting second longitudinal rod 62 of ladder, a kind of embodiment structure that Fig. 8 A is shown; Wherein second longitudinal rod 62 of ladder 60 has same pivoting point A with drive connecting rod 641; In other words second longitudinal rod 62 can be considered same connecting rod with drive connecting rod 641, and the bottom of passive connecting rod 642 is articulated in the forward position of bed frame 33 with rotating relation, and the two ends of tranverse connecting rod 643 are articulated in the top of drive connecting rod 641 and passive connecting rod 642 respectively with rotating relation; When ladder 60 be rocked to one with bed frame 33 before side align collapsed position the time; Can drive drive connecting rod 641 swings, simultaneously preceding side rail 64 is rocked to the position of folding, the preceding side rail 64 of this moment can and be posted by the forward edge of bed frame 33 by folding; Otherwise; When ladder 60 was opened into use location (seeing Fig. 8 A), second longitudinal rod 62 also can drive drive connecting rod 641 swings, and then preceding side rail 64 is raised up to a use location.

Said ladder longitudinal link 61 the first 60 and second longitudinal link 62 also each have a folding joint and joint C1 C2, implemented in a way, that the first longitudinal rod 61 and the second link 62 of each of the longitudinal the two rod, and then use a rotatable pivot rod to two C1 position of the joint connected to the first link 61 Zong, also the use of a rotatable rod pivot the two position of the joint C2 connecting a second longitudinal rod 62 when the ladder 60 is open to the use position (see Figure 8A) when the first longitudinal rod 61 of the ladder and second longitudinal link 62, respectively, in the joints can be C1 and C2 at the joints slightly bent in the direction of the front of the sofa, forming a kind of one o'clock tilt angle ladder 60, user climb.

According to one of embodiment of this divan; The another kind of embodiment of upper berth mechanism wherein; What also have an improvement leans against bracing frame 47A; Embodiment shown in figure 12 structure, the two ends that lean against bracing frame 47A be separately fixed at the left and right sides that lays respectively at divan in the diarthrosis mechanism substrate 46 than rearward position, the embodiment of this design and Fig. 9 constructs and compares; Can let the sofa back of the body cover 51 in the middle of part can be again to the rear direction retraction of sofa, and then bigger space is provided in the sofa form.

According to one of embodiment of this divan; The another kind of embodiment structure of upper berth mechanism wherein also has a kind of liftable bed frame 70; When divan expands into upper berth and lower berth form; Can be further with the height of the group 31 of going to bed to rising, make the user in lower berth have higher space, the also unexpected head that collides of unlikely generation constriction; The embodiment structure of liftable bed frame 70 is extremely shown in Figure 15 like Figure 13; Wherein liftable bed frame 70 has respectively compound parallel four-bar linkage and the guide mechanism of position in the position, the left and right sides of the group 31 of going to bed; Compound parallel four-bar linkage wherein has the parallel four connecting rod 71B with second of the first parallel four connecting rod 71A of two shared connecting rods; The first connecting rod A1 of the first parallel four connecting rod 71A is fixed in the side of bed frame 33; The second connecting rod A2 of the first parallel four connecting rod 71A is parallel with first connecting rod A1, and the two ends of third connecting rod A3 and the 4th connecting rod A4 are articulated in first connecting rod A1 and second connecting rod A2 respectively with rotating relation, and the parallel four connecting rod 71A with first of the second parallel four connecting rod 71B share second connecting rod A2; The two ends of the first connecting rod B1 of the second parallel four connecting rod 71B articulate with last support arm 45 with the front support rod 41 of upset supporting mechanism respectively; The third connecting rod B3 of the second parallel four connecting rod 71B and the two ends of the 4th connecting rod B4 are articulated in first connecting rod B1 and second connecting rod A2 respectively with rotating relation, and the end of the first connecting rod B1 of the second parallel four connecting rod 71B also is set with a guide bar B5, and the first connecting rod B1 of the parallel four connecting rod 71B with second of guide bar B5 is vertical; Guide bar B5 has a guide channel B51; The tail end of first connecting rod A1 among the aforementioned first parallel four connecting rod 71A has the protruded stigma A11 that can in guide channel B51, slide, and the centre position of second connecting rod A2 has an outstanding force column A21, and last support arm 45 has the force arm 451 of an extension; Force arm 451 has the driving ditch 452 of an arc; Aforesaid force column A21 can penetrate just and drive ditch 452, therefore, and when divan is launched into upper berth and lower berth form; The force arm 451 of last support arm 45 can utilize driving ditch 452 to force in force column A21; And then the second connecting rod A2 in the compound parallel four-bar linkage of interlock, make bed frame 33 upwards raise (seeing Figure 14), and the protruded stigma A11 of the tail end of the first connecting rod A1 of the first parallel four connecting rod 71A; Just can among guide channel B51, slide, in order to let bed frame 33 rising (seeing Figure 15) that can make progress stably; Otherwise, when replying the divan of upper berth and lower berth form for the sofa form, then can bed frame 33 be fallen and return back to original height.

The person of advancing can install safety arrestment lock L, is turned into sofa in order to avoid bed group malfunction, causes user's danger.In safety arrestment lock L do not remove, the kenel of divan can't start change over sofa.

Though the utility model has seen through the above embodiments and has disclosed as above; Right its is not in order to limit the utility model; Any those skilled in the art is not in breaking away from the utility model spirit and scope; When can doing a little change and retouching, thus the scope of patent protection of the utility model must look this specification appended request terms defined is as the criterion.

Claims

1. divan can be changed into the bunk beds of upper berth and lower berth form by the sofa form, comprises foundation structure, and this foundation structure has substrate frame and back of the body frame, the fixing rear side of being located at this substrate frame that stands of this back of the body frame; It is characterized in that: also comprise lower berth mechanism and upper berth mechanism, wherein:

2. divan as claimed in claim 1; It is characterized in that: the said group of leaving the bed comprises cushion and following bedstead, and these both sides of leaving the bed group have this quadric chain, and this time bedstead is installed on this substrate frame through this quadric chain; Make this group of leaving the bed to move to the position of this lower berth form from the position of this sofa form; Again, this first connecting rod is served as by this substrate frame, and this second connecting rod is served as by this time bedstead; The two ends of this third connecting rod and the 4th connecting rod are respectively with this first connecting rod and this second connecting rod is rotating is articulated, and this first connecting rod is parallel with this second connecting rod.

3. divan as claimed in claim 1; It is characterized in that: the said group of going to bed has two-sided cushion and bed frame; Bigger surface, the relative both sides of this two-sided cushion is respectively as seat and upper berth bed surface; This group of going to bed is repeatedly put above this group of leaving the bed during the sofa form, and this seat of this two-sided cushion becomes the seat of sofa up, when this divan expands into this upper berth and lower berth form; This upper berth bed surface of this two-sided cushion can overturn and become the bed surface on upper berth up and supply the user to doss; Wherein this seat and this upper berth bed surface can be selected the material different manufacturing respectively for use, and the front side of this bed frame is equiped with preceding side shield, and the front side plate washer is to extending below to shelter from this group of leaving the bed of this lower berth mechanism.

4. divan as claimed in claim 1; It is characterized in that: said upset supporting mechanism comprises front support rod and back supporting component; The rotating position that is articulated in this substrate frame near this divan leading edge, the bottom of this front support rod; The top of this front support rod is rotating to be articulated in this bed frame side and near the rearward position of this group of going to bed; At the rotating trace that is articulated with in position near the bottom of this front support rod, the rotating middle that is articulated in the 4th connecting rod in this quadric chain of the other end of this trace can expand in the process of upper berth and lower berth form in this group of going to bed of this upper berth mechanism of pulling; Can utilize this front support rod and this trace interlock quadric chain, this group of leaving the bed of this lower berth mechanism moved to the position of this lower berth form; This back supporting component comprises diarthrosis mechanism, the first power-assisted assembly, the second power-assisted assembly and last support arm; This diarthrosis mechanism has the substrate that lays respectively at this divan left and right sides, leans against bracing frame and three pivoting points; This leans against the support that bracing frame is made up of rod member; These two ends that lean against bracing frame are fixedly connected respectively in this substrate of this divan left and right sides; The end that should go up support arm is fixed in this substrate, the rotating centre position that is articulated in this bed frame side of the front end of support arm on this; The rotating position that is articulated in this back of the body frame near the top of the 3rd pivoting point among three pivoting points of this of this diarthrosis mechanism, this first pivoting point and the rotating respectively end of exerting oneself that is articulated in exert oneself end and this second power-assisted assembly of this first power-assisted assembly of this second pivoting point; Rotating one the 4th pivoting point that is articulated in this back of the body frame of the other end of this first power-assisted assembly, the rotating Wushu contact that is articulated in this back of the body frame of the other end of this second power-assisted assembly; Again, this first power-assisted assembly and this second power-assisted assembly are the Power Components that can make axially reciprocating, and this first power-assisted assembly and this second power-assisted assembly pressure accumulation type hydraulically extensible bar that is closed, to produce axial thrust.

5. divan as claimed in claim 4; It is characterized in that: said divan also has back cushion; This back cushion is fixed on the surface of sofa back of the body lid with slide fastener or devil's felt; This sofa back of the body covers the bracing frame that leans against that is installed in this upper berth mechanism with connection assembly, and these two ends that lean against bracing frame are separately fixed at upward this support arm of the left and right sides of this divan.

6. divan as claimed in claim 5; It is characterized in that: said divan also has backboard, left handrail and right handrail; This backboard is installed on this back of the body frame with coupling unit; This left side handrail and this right side handrail also are installed on this substrate frame of this divan left and right sides with this coupling unit, this coupling unit is that dovetail groove and dovetail block are formed.

7. divan as claimed in claim 6; It is characterized in that: said upper berth mechanism also has the left guardrail and the right guardrail of the left and right sides of the bed frame of being located at this group of going to bed; This left guardrail and this right guardrail are installed on the left and right sides of this bed frame with hinge; But this upper berth mechanism also has the folding or the ladder of expansion; This ladder is a parallel four-bar linkage; Have a pair of first parallel longitudinal rod, second longitudinal rod and several transverse links between this first longitudinal rod and this second longitudinal rod; Those connecting rods are rotating to each other to be articulated, the rotating front side that is articulated in this bed frame of pivoting point of this first longitudinal rod and this second longitudinal rod, this first longitudinal rod and this second longitudinal rod can with this pivoting point be pivot and this whole transverse links be rocked to together one with the green collapsed position of aliging of the front side edge of this bed frame.

8. divan as claimed in claim 7; It is characterized in that: said upper berth mechanism also have can with the preceding side rail of this ladder interlock together; Should preceding side rail be parallel four-bar linkage, comprise drive connecting rod, passive connecting rod and tranverse connecting rod, the rotating forward position that is articulated in this bed frame in the centre of this drive connecting rod; The tail end of this drive connecting rod is connecting this second longitudinal rod; This second longitudinal rod has same pivoting point with this drive connecting rod, the rotating forward position that is articulated in this bed frame in the bottom of this passive connecting rod, the rotating top that is articulated in this drive connecting rod and this passive connecting rod respectively, the two ends of this tranverse connecting rod.

9. divan as claimed in claim 8 is characterized in that: said lean against bracing frame two ends be separately fixed at this substrate of laying respectively at this divan left and right sides in this diarthrosis mechanism than rearward position.

10. divan as claimed in claim 8; It is characterized in that: said upper berth mechanism has liftable bed frame; This liftable bed frame has a compound parallel four-bar linkage and a guide mechanism in this group position, the left and right sides of going to bed respectively; This compound parallel four-bar linkage has parallel four connecting rods with second of first parallel four connecting rods of two shared connecting rods; The first connecting rod of these first parallel four connecting rods is fixed in the side of this bed frame; The second connecting rod of these first parallel four connecting rods is parallel with this first connecting rod, rotating this first connecting rod and this second connecting rod of being articulated in respectively in the two ends of the third connecting rod of these first parallel four connecting rods and the 4th connecting rod, and these second parallel four connecting rods are shared this second connecting rod with these first parallel four connecting rods; The two ends of the first connecting rod of these second parallel four connecting rods are gone up the support arm pivot joint with this front support rod of this upset supporting mechanism with being somebody's turn to do respectively; The third connecting rod of these second parallel four connecting rods and rotating this first connecting rod and this second connecting rod that is articulated in these second parallel four connecting rods respectively in the two ends of the 4th connecting rod, an end of this first connecting rod of these second parallel four connecting rods also is set with guide bar, and this guide bar is vertical with this first connecting rod of these second parallel four connecting rods; This guide bar has guide channel; The tail end of this first connecting rod of these first parallel four connecting rods has the protruded stigma that can in this guide channel, slide, and the centre position of this second connecting rod has outstanding force column, and support arm has the force arm of extension on this; This force arm has the driving ditch of arc, and this force column can penetrate this driving ditch just.