CN104273978A - Travel bed - Google Patents

Abstract

The invention relates to a travel cot, which comprises a bottom bracket, an upper frame, a vertical rod, and a fixing seat. The upper frame includes a peripheral rod, and the peripheral rod includes a first connecting rod and a The second connecting rod, the bottom bracket includes a bottom rod; the travel bed also includes a first locking mechanism, a locking connection mechanism, a cam assembly, a top rod, a top rod strut, an unlocking device for unlocking the first locking mechanism, and the locking connection mechanism includes a connecting seat And the locking device, the bottom rod is connected to the connecting seat in rotation, the cam assembly includes a cam fixedly connected with the bottom rod on the fixed seat, the ejector rod is connected in rotation with the ejector rod, and the ejector rod is connected to the first connecting rod or the second The connecting rods are connected in rotation, and the unlocking device is respectively connected with the cam and the first locking mechanism. In the present invention, the bottom frame drives the cam assembly and the vertical rod drives the upper frame to complete the folding of the entire vehicle frame, and the bed frame can be folded as soon as it is twisted. The operation is simple, easy and convenient, and the bed frame can quickly complete the folding.

Description

travel cot

technical field

The invention relates to the field of children's products, in particular to a travel cot.

Background technique

In the prior art, a foldable travel bed includes a foldable bed frame. The bed frame mainly includes a bottom frame, an upper frame and a vertical rod supported between the bottom frame and the upper frame. Usually, the bottom frame and the upper frame are The surrounding frame is folded to make the entire bed frame foldable, and the foldable bottom bracket and the upper surrounding frame respectively have locking mechanisms in the unfolded position, so the locking mechanisms of the bottom bracket and the upper surrounding frame need to be unlocked respectively, so that Fold the bottom frame and top rail to complete the entire bed frame; unfold in the same way. On the one hand, the structure of unlocking or locking respectively makes the structure of the travel cot cumbersome, and on the other hand, it is very inconvenient for the user to operate.

Contents of the invention

The object of the present invention is to provide a travel cot.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A travel cot, which has an unfolded state and a folded state, comprising a bottom bracket, an upper frame, a plurality of uprights arranged between the bottom bracket and the upper frame, and respectively arranged at the lower ends of the plurality of uprights part of the fixed seat,

The upper surrounding frame includes a plurality of surrounding rods located on different sides, and the ends of two adjacent surrounding rods are rotatably connected by a first connecting piece fixed on the vertical rod, and each of the surrounding rods The surrounding rod includes a first connecting rod and a second connecting rod whose ends are rotatably connected through a second connecting piece, and the bottom bracket includes a plurality of bottom rods;

The travel cot further includes a first locking mechanism for locking the first and second connecting rods relative to each other, and for connecting one ends of the plurality of bottom rods in rotation and locking with each other. The locking connection mechanism,

The travel cot also includes a cam assembly arranged on each of the fixed seats, a push rod extending along the height direction of the travel cot and whose lower end is supported on the cam assembly, and used to place the push rod The two push rod stays connected to the first connecting rod and the second connecting rod respectively, and the unlocking device for unlocking each of the first locking mechanisms, and the cam assembly includes rotatably arranged on the The cam on the fixed seat and fixedly connected with the other end of the bottom rod, the upper end of the ejector rod is rotatably connected with the lower ends of the two ejector rods, the two The upper ends of the two ejector rods are respectively rotatably connected with the first connecting rod and the second connecting rod, one end of the unlocking device is connected with the cam, and the other end is connected with the first lock Organizations are connected.

Preferably, the cam assembly further includes a lower link of the push rod, one end of the lower link of the push rod is rotatably connected with the cam, and the other end is rotated with the lower end of the push rod connect.

Preferably, the bottom of the push rod has a bent portion, and the bent portion is supported on the cam.

Preferably, the first locking mechanism includes two locking units for locking the first connecting rod and the second connecting rod respectively relative to the second connecting member, and the locking unit includes a set The lockway on the second connecting member is set on the first connecting rod or the second connecting rod to slide along the length direction of the first connecting rod or the second connecting rod and can be inserted into the The deadbolt in the lockway.

Further preferably, the unlocking device includes a plurality of unlocking units, and each of the unlocking units is capable of unlocking two adjacent locking units located on two adjacent surrounding poles, and the unlocking units include The traction cable pulling block connected with the cam, the traction cable connected with the traction cable pulling block at one end, the other end of the traction cable is divided into two paths and the two said second traction cables located on the adjacent side A locking mechanism is attached.

Further preferably, a chute is opened in the cam, and the pulling block of the traction cable is arranged in the chute; The connecting section connected by the cam, the two traction sections connected with the other end of the connecting section at one end, and the other ends of the two traction sections are connected with the two first locking mechanisms respectively. Lock tongue is connected.

Further preferably, the first connecting rod includes a first upper rod and a first lower rod arranged in parallel up and down, and the second connecting rod includes a second upper rod and a second lower rod arranged in parallel up and down. The locking tongues are respectively arranged on the first upper rod and the second upper rod, and the upper ends of the two push rod stays are respectively rotatably connected with the first lower rod and the second lower rod.

Preferably, the locking connection mechanism includes a connecting seat and a connecting rod for respectively connecting the plurality of bottom rods, the connecting seat includes an upper chassis, and is slidably arranged in the upper chassis along the up and down direction One end of the bottom rod is rotatably connected to the upper chassis, one end of the connecting rod is rotatably connected to the bottom rod, and the other end is rotatably connected to the lower chassis.

Further preferably, the locking connection mechanism further includes a locking device for locking the lower chassis relative to the upper chassis, the locking device includes an unlocking handle rotatably connected to the upper chassis, the The unlocking handle has a hook capable of hooking the lower chassis. When the locking device is in the locked state, the hook hooks the lower chassis. When the locking device is in the unlocked state, the The hook breaks away from the lower chassis.

Preferably, the push rod is connected to the vertical rod through a plurality of fixing sleeves.

Preferably, the first connecting rod includes a first upper rod and a first lower rod arranged in parallel up and down, and the second connecting rod includes a second upper rod and a second lower rod arranged in parallel up and down. A locking mechanism is located in the second connecting piece, and the upper ends of the two push rods are respectively rotatably connected to the first lower rod and the second lower rod; the locking connection mechanism includes The connecting seat and the connecting rod respectively connect the plurality of bottom rods, the connecting seat includes an upper chassis, and a lower chassis that is slidably arranged in the upper chassis along the up and down direction, and one end of the bottom rod is connected to the upper chassis. The upper chassis is rotatably connected, one end of the connecting rod is rotatably connected to the bottom rod, and the other end is rotatably connected to the lower chassis.

Further preferably, the unlocking device includes a traction cable block connected to the cam, a traction cable connected at one end to the traction cable block, and the other end of the traction cable is divided into two paths and The two first locking mechanisms on adjacent sides are connected.

Due to the use of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

In the present invention, the bottom frame drives the cam assembly and the vertical rod drives the upper frame to complete the folding of the entire vehicle frame, and the bed frame can be folded as soon as it is twisted. The operation is simple, easy and convenient, and the bed frame can quickly complete the folding.

Description of drawings

Accompanying drawing 1 is the open state schematic diagram of the present invention;

Accompanying drawing 2 is the front view of the present invention;

Accompanying drawing 3 a is the cross-sectional schematic diagram in the partially opened state of the ejector rod and the cam assembly in Embodiment 1;

Accompanying drawing 3b is the perspective view of the push rod and the cam assembly in the partially opened state in the first embodiment;

Accompanying drawing 4a is the schematic cross-sectional view of the push rod and the cam assembly partially folded in the first embodiment;

Accompanying drawing 4b is the perspective view of the push rod and the cam assembly in the half-folded state in the first embodiment;

Accompanying drawing 5a is the schematic cross-sectional view in the partially folded state of the ejector rod and the cam assembly in Embodiment 1;

Accompanying drawing 5b is the perspective view of the partly folded state of the push rod and the cam assembly in the first embodiment;

Accompanying drawing 6a is the schematic cross-sectional view of the ejector rod and the cam assembly in the partially opened state in the second embodiment;

Accompanying drawing 6b is the schematic cross-sectional view of the push rod and the cam assembly partially folded in the second embodiment;

Accompanying drawing 6c is the schematic cross-sectional view of the push rod and the cam assembly in the partially folded state in the second embodiment;

Accompanying drawing 7a is the schematic diagram that the first locking mechanism in the present invention is in locked state;

Accompanying drawing 7b is the schematic diagram that the first locking mechanism in the present invention is in the unlocked state;

Accompanying drawing 8 is the half-folded state schematic diagram of the present invention;

Accompanying drawing 9 is the schematic diagram of the folded state of the present invention.

Among them: 1. Vertical rod; 2. Fixing seat; 3. Surrounding rod; 30. The first connecting rod; 300. The first upper rod; 301. The first lower rod; 31. The second connecting rod; 310. The second upper rod Rod; 311, the second lower rod; 32, the first connector; 33, the second connector; 40, the bottom bar; 41, the upper chassis; 42, the lower chassis; 43, the connecting rod; 44, the unlocking handle; 5, Ejector; 50, fixed sleeve; 51, bending part; 6, ejector strut; 70, cam; 71, lower connecting rod of ejector; 80, pull block of traction cable; 81, traction cable; 810, connecting section; 811, traction section; 82, traction lock branch; 90, deadbolt; 91, lockway.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Embodiment one:

A travel cot as shown in Figure 1 has an unfolded state and a folded state, including a bottom bracket, an upper frame, four vertical rods 1 arranged between the bottom bracket and the upper frame, and four vertical rods arranged on the four vertical rods respectively. 1 the fixing seat 2 at the lower end. The following is a detailed introduction to each component:

The upper surrounding frame includes four surrounding rods 3 located on four sides, and each surrounding rod 3 includes a first connecting rod 30 and a second connecting rod 31, wherein: the first connecting rod 30 includes a first upper rod 300 arranged in parallel up and down, The first lower rod 301 and the second connecting rod 31 include a second upper rod 310 and a second lower rod 311 arranged in parallel up and down. One end of the first upper rod 300 and the first lower rod 301 is rotatably connected with the first connecting piece 32 fixed on the vertical rod 1 through the shaft e and the shaft f, and one end of the second upper rod 310 and the second lower rod 311 The first upper rod 300 and the other end of the first lower rod 301 are rotationally connected with the second connecting member 33 through the shaft m and the shaft o, and the second The other ends of the upper rod 310 and the second lower rod 311 are also rotatably connected to the second connecting member 33 through the shaft n and the shaft p.

The upper frame also includes a first locking mechanism for locking each first link 30 and second link 31 relative to each other, and an unlocking device for unlocking each first locking mechanism. Wherein: as shown in Figures 7a and 7b: the first locking mechanism is arranged in the second connecting piece 33, including two locking mechanisms for locking the first upper rod 300 and the second upper rod 310 with the second connecting member 33 respectively. The locking unit, the locking unit includes a lock channel arranged on the second connecting member 33, and is arranged on the first upper rod 300 and the second upper rod 310 to slide along the length direction of the first upper rod 300 and the second upper rod 310 And it can be inserted into the dead bolt 9 in the lockway. The unlocking device includes a plurality of unlocking units, and each unlocking unit can unlock two adjacent surrounding poles 3 and two adjacent locking units.

The bottom bracket includes four bottom bars 40, and a locking connection mechanism for locking and connecting one end of the four bottom bars 40. The locking connection mechanism includes a connecting seat and a locking device for connecting the four bottom bars 40 respectively. The four bottom bars 40 One end is respectively rotatably connected with the connecting seat. Specifically: the connection seat includes an upper chassis 41, a lower chassis 42 that is slidably arranged in the upper chassis 41 along the up and down direction, one end of the bottom rod 40 is rotationally connected with the upper chassis 41 through the axis b, and the locking connection mechanism also includes A connecting rod 43 with one end rotatably connected to the lower chassis 42 through the axis c1 and the other end rotatably connected to the bottom rod 40 through the axis c2. The locking device includes an unlocking handle 44 that is connected to the upper chassis 41 through the rotation of the shaft a. The unlocking handle 44 has a hook that can hook the lower chassis 42. When the locking device is in the locked state, the hook hooks the lower chassis 42. The locking device is in the In the unlocked state, the hook is separated from the lower chassis 42 .

As shown in Figures 3a-5b: the travel cot further includes a cam assembly arranged on each fixing seat 2, a push rod 5 and a push rod strut 6 extending along the height direction of the travel cot and whose lower end is supported on the cam assembly. Wherein: the ejector rod 5 is connected to the vertical rod 1 through a plurality of fixed sleeves 50; the upper end of one ejector rod 5 is rotationally connected with one end of the two ejector rods 6 through the shaft j and the shaft l at the same time, and the two ejector rods The other end of the rod strut 6 is rotatably connected to the first lower rod 301 and the second lower rod 311 through the axis i and the axis k respectively.

The cam assembly includes a cam 70 rotatably arranged on the fixed base 2 and fixedly connected to the other end of the bottom bar 40 . The bottom of the top bar 5 has a bent portion 51 supported on the cam 70 .

The unlocking unit includes a traction cable pull block 80 connected to the cam 70, a traction cable 81 connected to the traction cable pull block 80 at one end, a chute is provided in the cam 70, and the traction cable pull block 80 is specifically arranged in the chute; The traction cable 81 has two traction sections 811 that are positioned at the connecting section 810 whose end is connected with the cam 70, one end and the other end of the connecting section 810 through the traction lock branch 82 and are located in the vertical rod 1, and the two traction sections 811 The other ends are respectively connected with the deadbolts 9 of the two locking units.

When the locking device is in the locked state, the hook catches the lower chassis 42, and the whole bed frame is in the open state, as shown in Figure 1 .

Lift the unlocking handle 44 upwards, the hook on the unlocking handle 44 is disengaged from the lower chassis 42 to unlock, and the entire connecting seat drives one end of the four bottom rods 40 to move upwards. At this time, the bottom rods 40 will rotate downward around the axis b. At the same time, through the connecting rods 43 drives the lower chassis 42 to slide downward in the upper chassis 41; continue to lift the unlocking handle 44 upwards, the bottom bar 40 and the cam 70 will fold closer to the vertical bar 1 around the axis d, and the cam 70 drives the traction lock block 80 in the chute to Slide down, and pull the dead bolt 9 on the first upper rod 300 and the second upper rod 310 by the two traction sections 811 of the traction lock 81 at the same time, the dead bolt 9 is deviated from the lock groove, and the upper enclosure frame is unlocked; at the same time, the cam 70 The rotation makes the support under the bending part 51 disappear, and the first upper rod 300, the first lower rod 301, the second upper rod 310, and the second lower rod 311 respectively revolve around the axis e, the axis f, the axis g, and the axis h due to their own weight. Rotate, and fold closer to the vertical rod 7, and drive the middle part of the vertical rod 5 to rotate downward through the push rod strut 6, so that the vertical rod 7 moves closer to the middle along the roughly vertical direction, as shown in the half-folded state in Figure 8 , the direction of the four corners of the bed frame is the same principle, when the connecting seat is fully lifted by lifting the unlocking handle 44, the bed frame is finally folded to the state shown in Figure 9 .

When it is necessary to open the bed frame, press down the connecting seat until the connecting seat moves below the horizontal line r of the bottom bar 40, the lower chassis 42 slides upwards due to the driving of the connecting rod 43 and finally gets locked on the hook of the unlocking handle 44, 4 The other end of the bottom rod 40 rotates around the axis d and separates from the vertical rod 1. The bottom rod 40 will drive the top rod 5 to move upwards, and the upper frame will be pushed upward through the top rod strut 6. The first upper rod 300 and the first lower rod 301 , the second upper rod 310 and the second lower rod 311 rotate around the axis e, axis f, axis g, and axis h to a certain angle, and the lock tongue 9 on the first upper rod 300 and the second upper rod 310 is inserted into the lock groove, The upper frame is locked, as shown in Figure 2, at this moment the whole bed frame is opened and tightened.

Embodiment two:

As shown in Figures 6a, 6b, and 6c: this embodiment is basically the same as Embodiment 1, the difference is that the cam assembly includes a cam 70, a lower connecting rod 71 of the push rod, and one end of the lower connecting rod 71 of the push rod passes through the shaft s and the The cam 70 is rotatably connected, and the other end is rotatably connected to the lower end of the push rod 5 through the axis q. When the bed frame is folded, the cam 70 drives the lower connecting rod 71 of the ejector rod and the ejector rod 5 to move downward. Due to the falling of its own weight, the upper frame part of the bed frame will drive the ejector rod 5 to move downward through the ejector rod 6. Complete the fold.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (12)

1. A travel cot has an unfolded state and a folded state, comprising a bottom bracket, an upper frame, a plurality of uprights arranged between the bottom bracket and the upper frame, and a plurality of uprights arranged on the plurality of uprights respectively. Fixing seat at the lower end of the rod, The upper surrounding frame includes a plurality of surrounding rods located on different sides, and the ends of two adjacent surrounding rods are rotatably connected by a first connecting piece fixed on the vertical rod, and each of the surrounding rods The surrounding rod includes a first connecting rod and a second connecting rod whose ends are rotatably connected through a second connecting piece, and the bottom bracket includes a plurality of bottom rods; The travel cot further includes a first locking mechanism for locking the first and second connecting rods relative to each other, and for connecting one ends of the plurality of bottom rods in rotation and locking with each other. A locking connection mechanism, characterized in that: The travel cot also includes a cam assembly arranged on each of the fixed seats, a push rod extending along the height direction of the travel cot and whose lower end is supported on the cam assembly, and used to place the push rod The two push rod stays connected to the first connecting rod and the second connecting rod respectively, and the unlocking device for unlocking each of the first locking mechanisms, and the cam assembly includes rotatably arranged on the The cam on the fixed seat and fixedly connected with the other end of the bottom rod, the upper end of the ejector rod is rotatably connected with the lower ends of the two ejector rods, the two The upper ends of the two ejector rods are respectively rotatably connected with the first connecting rod and the second connecting rod, one end of the unlocking device is connected with the cam, and the other end is connected with the first lock Organizations are connected. 2. The travel cot according to claim 1, characterized in that: the cam assembly further includes a lower link of the push rod, one end of the lower link of the push rod is rotatably connected to the cam, and the other One end is rotatably connected with the lower end of the push rod. 3. The travel cot according to claim 1, wherein the bottom of the push rod has a bent portion, and the bent portion is supported on the cam. 4. The travel cot according to claim 1, characterized in that: the first locking mechanism comprises a mechanism for locking the first connecting rod and the second connecting rod relative to the second connecting piece respectively. The two locking units, the locking unit includes a lock channel set on the second connecting piece, set on the first connecting rod or the second connecting rod along the first connecting rod or the second connecting rod The rod is slidably arranged in the length direction and can be inserted into the lock tongue in the lock channel. 5. The travel cot according to claim 4, characterized in that: said unlocking device comprises a plurality of unlocking units, each of said unlocking units can be located on two adjacent surrounding bars and adjacent two A locking unit is unlocked, the unlocking unit includes a traction cable block connected to the cam, a traction cable connected at one end to the traction cable block, and the other end of the traction cable is divided into two paths Connected to two of said first locking mechanisms on adjacent sides. 6. The travel cot according to claim 5, characterized in that: there is a chute in the cam, and the pulling block of the traction cable is set in the chute; the traction cable has a The connecting section whose end is connected to the cam in the above-mentioned vertical rod, the two traction sections whose one end is connected to the other end of the connecting section, the other ends of the two traction sections are respectively connected to the The deadbolts of the two first locking mechanisms mentioned above are connected. 7. The travel cot according to claim 4, characterized in that: the first connecting rod includes a first upper rod and a first lower rod arranged in parallel up and down, and the second connecting rod includes a first upper rod and a first lower rod arranged in parallel up and down. Two upper rods and second lower rods, the dead bolts are respectively arranged on the first upper rod and the second upper rod, and the upper ends of the two push rods are connected to the first upper rods respectively. The lower rod and the second lower rod are connected in rotation. 8. The travel cot according to claim 1, characterized in that: the locking connection mechanism includes a connecting seat and a connecting rod for respectively connecting the plurality of bottom rods, and the connecting seat includes an upper chassis, a The lower chassis is slidably arranged in the upper chassis in the upper and lower directions, one end of the bottom rod is rotatably connected to the upper chassis, one end of the connecting rod is rotatably connected to the bottom rod, and One end is rotatably connected with the lower chassis. 9. The travel cot according to claim 8, wherein the locking connection mechanism further includes a locking device for locking the lower chassis relative to the upper chassis, and the locking device includes a rotating connection The unlocking handle on the upper chassis, the unlocking handle has a hook capable of hooking the lower chassis, when the locking device is in the locked state, the hook hooks the lower chassis, When the locking device is in the unlocked state, the hook is disengaged from the lower chassis. 10. The travel cot according to claim 1, characterized in that: the push rod is connected to the vertical rod through a plurality of fixing sleeves. 11. The travel cot according to claim 1, characterized in that: the first connecting rod includes a first upper rod and a first lower rod arranged in parallel up and down, and the second connecting rod includes a first upper rod and a first lower rod arranged in parallel up and down. Two upper rods and second lower rods, the first locking mechanism is located in the second connecting piece, the upper ends of the two push rods are respectively connected to the first lower rod and the second lower rod The rods are connected in rotation; the locking connection mechanism includes a connecting seat and a connecting rod for respectively connecting the plurality of bottom rods, the connecting seat includes an upper chassis, and is slidably arranged in the upper chassis along the up and down direction One end of the bottom rod is rotatably connected to the upper chassis, one end of the connecting rod is rotatably connected to the bottom rod, and the other end is rotatably connected to the lower chassis. 12. The travel cot according to claim 11, characterized in that: the unlocking device comprises a traction cable pull block connected to the cam, a traction cable with one end connected to the traction cable pull block, The other end of the pulling rope is divided into two paths and connected with two first locking mechanisms on adjacent sides.