CN108477911B - Travelling bed - Google Patents

Abstract

The invention discloses a travel bed, which comprises an upper surrounding frame assembly, a chassis assembly, a plurality of vertical rods and a locking mechanism, wherein the upper surrounding frame assembly comprises a transverse surrounding rod assembly and a side surrounding rod assembly, one transverse surrounding rod assembly and the side surrounding rod assembly which are adjacent are rotationally connected with the same vertical rod, the chassis assembly comprises a plurality of bottom supporting rods and a connecting seat rotationally connected with the bottom supporting rods, the travel bed also comprises a sliding assembly, a first connecting rod, a second connecting rod and a third connecting rod, the sliding assembly is arranged on the vertical rods in a sliding manner, the first connecting rod is respectively rotationally connected with the sliding assembly and the transverse surrounding rod assembly, the second connecting rod is respectively rotationally connected with the sliding assembly and the side surrounding rod assembly, the third connecting rod is respectively rotationally connected with the vertical rods and the bottom supporting rods, and the bottom supporting rods are rotationally connected with the sliding assembly. The whole travel bed can be locked in an unfolding state through a set of locking mechanisms, and the travel bed can also realize that the upper surrounding frame assembly is driven to synchronously and orderly turn over and fold when the chassis assembly is folded, so that folding and unfolding operations of the travel bed are facilitated.

Description

travel cot

Technical field

The invention relates specifically to a travel cot.

Background technique

A general foldable travel bed includes an upper frame assembly with expanded and folded states, a chassis assembly with expanded and folded states, and a vertical pole supported between the upper frame assembly and the chassis assembly. The travel bed in the prior art is provided with at least two sets of locking mechanisms, through which the upper frame assembly and the chassis assembly are respectively locked in the unfolded state. When the travel bed is folded, these two sets of locking mechanisms need to be locked one by one. Unlocking, or it is necessary to set up a linkage mechanism so that the process of unlocking one set of locking mechanisms can simultaneously unlock the other set of locking mechanisms. Regardless of the above method, the operation is complicated; and the upper frame assembly and chassis of some travel beds There is no linkage structure between the components, so when the travel bed is folded, the upper frame assembly and the chassis assembly are flipped and folded separately. This will cause the problem of the travel bed being scattered during the folding process.

Contents of the invention

The object of the present invention is to provide an improved travel bed to address the deficiencies in the prior art.

In order to achieve the above object, the technical solution adopted by the present invention is:

A travel bed having an unfolded and folded state, the travel bed comprising an upper frame assembly having an unfolded and folded state, a chassis assembly having an unfolded and folded state, located between the upper frame assembly and the chassis assembly And there are a plurality of vertical rods extending in the up and down direction and a locking mechanism for locking the travel bed in an unfolded state. The upper frame assembly includes a plurality of transverse rail assemblies and side rails that both have unfolded and folded states. assembly, the adjacent one of the horizontal rail assembly and the side rail assembly are respectively rotatably connected to the same vertical pole, the chassis assembly includes a plurality of bottom support rods, and each of the bottom support rods The travel bed also includes a sliding assembly that can be slidably disposed on the upright pole along the length extension direction of the upright pole, and the two ends are respectively connected to the upper part of the sliding assembly. The first link is rotatably connected to the transverse rail assembly, the second link is rotatably connected to the upper part of the sliding assembly and the side rail assembly at both ends, and the second link is rotatably connected to the side rail assembly at both ends. A third connecting rod is rotatably connected to the vertical rod and the bottom support rod, and the other end of each bottom support rod is rotationally connected to the lower part of the sliding assembly.

Preferably, the adjacent horizontal rail assembly and the side rail assembly are rotatably connected to the same vertical pole through a first shaft and a second shaft respectively, and both ends of the first connecting rod are The second link is rotatably connected to the sliding assembly and the transverse rod assembly through the third and fourth axes respectively, and the two ends of the second connecting rod are connected to the sliding assembly through the fifth and sixth axes respectively. It is rotatably connected to the side rail assembly, and the two ends of the third connecting rod are rotatably connected to the upright rod and the bottom support rod through the seventh and eighth axes respectively. The bottom support rod The sliding assembly is rotatably connected to the sliding assembly through a ninth axis, the first axis and the second axis are arranged perpendicularly, and the first axis, the third axis and the fourth axis are arranged in parallel, so The second axis, the fifth axis and the sixth axis are arranged in parallel, and the seventh axis, the eighth axis and the ninth axis are arranged in parallel.

Preferably, the locking mechanism is provided between the vertical rod and the sliding assembly for locking the relative positions of the two.

Preferably, the travel bed further includes an unlocking mechanism for unlocking the locking mechanism. The unlocking mechanism includes an unlocking handle and a traction rope provided on the connection base. One end of the traction rope is connected to the The unlocking handle is connected, and the other end of the pulling rope is connected with the locking mechanism.

Preferably, the sliding assembly includes a main rod extending in the up and down direction and an upper sliding sleeve and a lower sliding sleeve respectively fixedly connected to the upper and lower ends of the main rod, and the first connecting rod and the second connecting rod. They are respectively rotatably connected to the upper sliding sleeve, and the other end of the bottom support rod is rotatably connected to the lower sliding sleeve.

Further, each of the vertical rods has a lumen extending along its length direction, the main rod is located in the lumen of the vertical rod, and the upper sliding sleeve and the lower sliding sleeve are respectively sleeved on the said vertical rod. The outside of the pole.

Furthermore, the main rod and the upper sliding sleeve are fixedly connected through a first fixed column, the main rod and the lower sliding sleeve are fixedly connected through a second fixed column, and the third connecting rod is fixedly connected to the vertical rod. Rotatingly connected through the seventh axis, the upper part of the vertical pole is provided with a first limiting groove, the lower part of the vertical pole is provided with a second limiting groove, and the main rod is provided with a third limiting groove, so The first limiting groove, the second limiting groove and the third limiting groove all extend in the up and down direction, and the first fixing post is partially located in the first limiting groove and can move along the third limiting groove. A limiting groove is slidably disposed in the length extending direction, the second fixing post is partially located in the second limiting groove and can be slidably disposed along the length extending direction of the second limiting groove, and the seventh fixing post is disposed slidably in the length extending direction of the second limiting groove. The shaft passes through the third limiting groove and is slidably disposed along the length extension direction of the third limiting groove.

Further, the main rod is located outside the upright pole and is arranged parallel to the upright pole, and the upper sliding sleeve and the lower sliding sleeve are respectively sleeved on the outside of the upright pole.

Preferably, each of the transverse rail assemblies includes two transverse rails with one end portions rotationally connected to each other, and each of the side rail assembly includes two side rails with one end portions rotationally connected to each other. The other end of the surrounding rod and the other end of the side surrounding rod are rotatably connected to the upright rod respectively.

Preferably, each of the vertical poles includes a vertical pole support extending in the up and down direction and a connector fixedly provided at the upper end of the vertical pole. The transverse rail assembly and the side rail assembly are Rotatingly connected to the connecting pieces respectively.

Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the travel bed of the present invention has a simple structure, and the entire travel bed can be locked in the unfolded state only through a set of locking mechanisms, which makes the unfolding of the travel bed The folding operation is convenient, and the travel bed can also drive the upper frame assembly to flip and fold synchronously and orderly when the chassis assembly is folded, thereby making the folding operation of the travel bed more convenient.

Description of drawings

Figure 1 is a schematic structural diagram of the travel cot of the present invention in an unfolded state (Embodiment 1);

Figure 2 is an exploded view of the travel cot of the present invention (Embodiment 1);

Figure 3 is a schematic structural diagram of the travel bed of the present invention during the folding process (Embodiment 1);

Figure 4 is a schematic structural diagram of the travel bed of the present invention in a folded state (Embodiment 1);

Figure 5 is a schematic structural diagram of the travel cot of the present invention in an unfolded state (Embodiment 2);

Figure 6 is an exploded view of the travel cot of the present invention (Embodiment 2);

Figure 7 is a schematic structural diagram of the travel bed of the present invention during the folding process (Embodiment 2);

Figure 8 is a schematic structural diagram of the travel bed of the present invention in a folded state (Embodiment 2).

Among them: 1. Upper frame assembly; 11. Cross rail assembly; 12. Side rail assembly; 2. Chassis assembly; 21. Connecting seat; 22. Bottom support pole; 23. Foot support pole; 3. Vertical pole; 31. Vertical pole support; 311. First limiting groove; 312. Second limiting groove; 32. Connector; 4. Sliding component; 41. Main rod; 411. Third limiting groove; 42. Upper slide sleeve; 43, lower sleeve; 51, first connecting rod; 52, second connecting rod; 53, third connecting rod; 61, first shaft; 62, second shaft; 63, third shaft; 64, fourth Axis; 65, fifth axis; 66, sixth axis; 67, seventh axis; 68, eighth axis; 69, ninth axis; 7, unlocking handle.

Detailed ways

The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in Figures 1 to 4, the travel bed of the present invention has an unfolded and folded state, and specifically includes an upper frame assembly 1, a chassis assembly 2, and a travel bed located between the upper frame assembly 1 and the chassis assembly 2 and extending in the up and down direction. The plurality of vertical poles 3, the upper frame assembly 1 and the chassis assembly 2 all have unfolded and folded states. The travel bed also includes a locking mechanism for locking the travel bed in the unfolded state.

The upper frame assembly 1 includes transverse rail assemblies 11 located at the front and rear sides of the travel bed and side rail assemblies 12 located at the left and right sides of the travel bed. The adjacent transverse rail assembly 11 and the side rail assembly 12 are both connected with each other. The same vertical pole 3 is rotationally connected. The horizontal fence rod assembly 11 includes two horizontal fence rods with one end portion rotationally connected. The other ends of the two horizontal fence rods are respectively rotationally connected with the vertical pole 3. The side fence rod assembly 12 includes One end of the two side rails is rotatably connected to each other, and the other ends of the two side rails are rotatably connected to the vertical pole 3 respectively.

Each vertical pole 3 includes a vertical pole support 31 extending in the up and down direction and a connector 32 fixedly provided on the upper end of the vertical pole support 31 . The horizontal rail assembly 11 and the side rail assembly 12 are respectively connected to the connector 32 Turn the connection.

The chassis assembly 2 includes a connecting base 21 located at the center of the bottom of the travel bed, a plurality of bottom support rods 22 with one end rotatably connected to the connecting base 21, and a plurality of foot support rods 23 with one end rotatably connected to the connecting base 21. Each foot The other ends of the support rods 23 are supported on the ground. In this embodiment, the number of the bottom support rods 22 and the upright poles 3 are the same, and each is provided with four. The four bottom support rods 22 are connected with the connecting base 21 to form an "X"-shaped structure, and there are two foot support rods 23. The two foot support rods 23 are arranged symmetrically.

The travel bed also includes a sliding assembly 4, a first link 51, a second link 52 and a third link 53. The sliding assembly 4 can be slidably disposed on the upright 3 along the length extension direction of the upright 3. The first The two ends of the connecting rod 51 are rotatably connected to the upper part of the sliding assembly 4 and the side rail assembly 11 respectively, and the two ends of the second connecting rod 52 are rotatably connected to the upper part of the sliding assembly 4 and the side rail assembly 12 respectively. Both ends of the third connecting rod 53 are rotatably connected to the vertical pole 3 and the bottom support rod 22 respectively, and the other end of each bottom support rod 22 is rotationally connected to the lower part of the sliding assembly 4 respectively. In this way, a crank slider mechanism is formed between the horizontal wall rod assembly 11, the vertical rod 3, the sliding assembly 4 and the first connecting rod 51, and between the side wall rod assembly 12, the vertical rod 3, the sliding assembly 4 and the second connecting rod. A crank sliding mechanism is formed between 52, and a crank sliding block mechanism is also formed between the bottom support rod 22, the sliding assembly 4, the vertical rod 3 and the third connecting rod 53. In this way, the entire travel can be locked through a set of locking mechanisms. The bed is locked in the unfolded state, and when the bottom support rod 22 is flipped and folded, the above three sets of crank slider mechanisms can drive the upper frame assembly 1 to flip and fold synchronously and orderly.

In this embodiment, a locking mechanism is provided between the upright pole 3 and the sliding assembly 4 to lock the positions of the two. When the position between the upright pole 3 and the sliding assembly 4 is locked, the entire travel bed is in a stable deployment state. state.

In this embodiment, an adjacent horizontal rail assembly 11 and a side rail assembly 12 are rotationally connected to the same upright pole 3 through the first shaft 61 and the second shaft 62 respectively. The two ends of the first connecting rod 51 The second connecting rod 52 is rotatably connected to the sliding assembly 4 and the transverse rod assembly 11 through the third shaft 63 and the fourth shaft 64 respectively. The two ends of the second connecting rod 52 are connected to the sliding assembly 4 and the sliding assembly 4 through the fifth shaft 65 and the sixth shaft 66 respectively. The side wall rod assembly 12 is rotationally connected, and the two ends of the third connecting rod 53 are rotationally connected to the upright rod 3 and the bottom support rod 22 through the seventh axis 67 and the eighth axis 68 respectively. The bottom support rod 22 is connected to the sliding assembly 4 The first axis 61 and the second axis 62 are rotationally connected through the ninth axis 69. The first axis 61, the third axis 63 and the fourth axis 64 are arranged in parallel. The second axis 62, the fifth axis 65 and the fourth axis 64 are arranged in parallel. The sixth axis 66 is arranged in parallel, and the seventh axis 67, the eighth axis 68 and the ninth axis 69 are arranged in parallel.

Specifically, the sliding assembly 4 includes a main rod 41 extending in the up and down direction and an upper sliding sleeve 42 and a lower sliding sleeve 43 respectively fixedly connected to the upper and lower ends of the main rod 41. The first connecting rod 51 and the second connecting rod 52 are respectively It is rotatably connected with the upper sliding sleeve 42 , and the other end of the bottom support rod 22 is rotatably connected with the lower sliding sleeve 43 .

In this embodiment, each vertical pole 3 has a lumen extending along its length direction. The main rod 41 is located in the lumen of the vertical pole 3. The upper sliding sleeve 42 and the lower sliding sleeve 43 are respectively set on the outside of the vertical pole 3. The main rod 41 and the upper sliding sleeve 42 are fixedly connected through the first fixed column, and the main rod 41 and the lower sliding sleeve 43 are fixedly connected through the second fixed column.

A first limiting groove 311 is provided on the upper part of the vertical pole support 31 , a second limiting groove 312 is provided on the lower part of the vertical pole support 31 , and a third limiting groove 411 is provided on the main pole 41 . The limiting groove 311, the second limiting groove 312 and the third limiting groove 411 all extend in the up and down direction. During the unfolding or folding process of the travel bed, the first fixing column is partially located in the first limiting groove 311 and can be moved along the first limiting groove 311. The first limiting groove 311 is slidably disposed in the length extending direction. The second fixing post is partially located in the second limiting groove 312 and can be slidably disposed along the length extending direction of the second limiting groove 312 . The seventh shaft 67 passes through The third limiting groove 411 is slidably disposed along the length extension direction of the third limiting groove 411 .

In this embodiment, the central axes of the first limiting groove 311 and the second limiting groove 312 extend in the same linear direction.

The travel bed also includes an unlocking mechanism for driving the locking mechanism to unlock and fold the travel bed. Specifically, the unlocking mechanism includes an unlocking handle 7 provided on the connection base 21 and a traction cable with one end connected to the unlocking handle 7. The traction cable The other end is connected to the locking mechanism. When the unlocking handle 7 is pulled upward, the locking mechanism is pulled by the pulling rope to unlock it.

When the travel bed is in the unfolded state, the locking mechanisms are in the locked state, as shown in Figure 1.

When the travel cot needs to be folded, pull up the unlocking handle 7 and pull the locking mechanism through the pulling cable to unlock it; when you continue to pull up the unlocking handle 7, the bottom support rod 22 is rotated relative to the connecting seat 21. In the process, The third link 53 causes the sliding assembly 4 to slide downward relative to the vertical pole 3 along the length extension direction of the vertical pole 3. When the sliding assembly 4 slides downward, the first connecting rod 51 drives the horizontal rod assembly 11 around the first axis. 61 flips downward and moves closer to the vertical pole 3. The second connecting rod 52 drives the side rail assembly 12 to flip downward around the second axis 62 and moves closer to the vertical pole 3, so that each vertical pole 3 gradually moves closer to the chassis assembly 2. Finally, Fold as shown in Figure 4.

When the travel bed is unfolded from the folded state, hold the opposite sides or diagonal corners of the travel bed with both hands to gradually unfold it, and the rods that make up the travel bed will flip over and open each other, and then press the connecting seat 21, so that Just lock the locking mechanism.

Example 2

As shown in Figures 5 to 8, in this embodiment, the upper sliding sleeve 42 and the lower sliding sleeve 43 are respectively set on the outside of the vertical pole 3. The main pole 41 is also located on the outside of the vertical pole 3 and is arranged parallel to the vertical pole 3. , in this way, the main rod 41, the upper sliding sleeve 42 and the lower sliding sleeve 43 can be arranged in one piece without being connected through the first fixed column and the second fixed column, that is, there is no need to open the first limiting groove 311 and the second limiting groove 311 on the vertical pole 3. As for the limiting groove 312, there is no need to provide a third limiting groove 411 on the main rod 41, and the rest is the same as in Embodiment 1.

The travel bed of the invention has a simple structure, and the entire travel bed is provided with only one set of locking mechanisms, so that the locking and unlocking operations of the travel bed are very convenient, and the failure rate that occurs when there are many locking mechanisms can be reduced. At the same time, when the travel bed is folded, by pulling and unlocking the handle to fold the chassis assembly, the upper frame assembly can be driven to fold automatically and orderly. When the travel bed is unfolded, by operating the upper frame assembly, the chassis assembly can be caused to fold. It also unfolds automatically and orderly, making the folding and unfolding operations of the travel bed more convenient and making the travel bed more convenient to use.

The above embodiments are only for illustrating the technical concepts and characteristics of the present invention. Their purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly. They cannot limit the scope of protection of the present invention. All equivalent changes or modifications made based on the spirit and essence of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A travel bed, which has an unfolded and folded state. The travel bed includes an upper frame assembly with an unfolded and folded state, a chassis assembly with an unfolded and folded state, and is located on the upper frame assembly and the chassis assembly. There are a plurality of vertical rods extending in the up and down direction and a locking mechanism for locking the travel bed in an unfolded state. The upper frame assembly includes a plurality of transverse frame assemblies and side rails each having an unfolded and folded state. Surrounding rod assembly, the adjacent horizontal surrounding rod assembly and the side surrounding rod assembly are respectively rotatably connected with the same vertical pole, the chassis assembly includes a plurality of bottom support rods, and each of the bottom supporting rods is A connecting seat with one end of the support rod rotatably connected, characterized in that: the travel bed further includes a sliding component that can be slidably disposed on the vertical rod along the length extension direction of the vertical rod, and the two ends are respectively connected to the connecting seat. The upper part of the sliding assembly and the first connecting rod are rotatably connected to the side rail assembly, and the two ends of the second connecting rod are respectively rotatably connected to the upper part of the sliding assembly and the side rail assembly. The ends of the third connecting rod are rotatably connected to the upright rod and the bottom support rod respectively, and the other end of each bottom support rod is rotatably connected to the lower part of the sliding assembly. 2. The travel bed according to claim 1, characterized in that: the adjacent horizontal rail assembly and the side rail assembly are connected to the same vertical pole through a first axis and a second axis respectively. The two ends of the first link are rotatably connected to the sliding assembly and the transverse rod assembly through the third axis and the fourth axis respectively, and the two ends of the second link are respectively The fifth and sixth axes are rotatably connected to the sliding assembly and the side rod assembly, and the two ends of the third link are connected to the upright rod and the side rod assembly through the seventh and eighth axes respectively. The bottom support rod is rotationally connected to the sliding assembly through a ninth axis. The first axis and the second axis are arranged perpendicularly. The three axes and the fourth axis are arranged in parallel, the second axis, the fifth axis and the sixth axis are arranged in parallel, and the seventh axis, the eighth axis and the ninth axis are arranged in parallel. Set in parallel. 3. The travel bed according to claim 1, characterized in that the locking mechanism is provided between the upright rod and the sliding assembly for locking the relative positions of the two. 4. The travel bed according to claim 1, characterized in that: the travel bed further includes an unlocking mechanism for unlocking the locking mechanism, and the unlocking mechanism includes an unlocking handle provided on the connecting base and Pulling rope, one end of the pulling rope is connected to the unlocking handle, and the other end of the pulling rope is connected to the locking mechanism. 5. The travel bed according to claim 1, characterized in that: the sliding assembly includes a main rod extending in the up and down direction and an upper sliding sleeve and a lower sliding sleeve fixedly connected to the upper and lower ends of the main rod respectively. The first connecting rod and the second connecting rod are rotatably connected to the upper sliding sleeve respectively, and the other end of the bottom support rod is rotatably connected to the lower sliding sleeve. 6. The travel bed according to claim 5, characterized in that: each of the upright poles has a lumen extending along its length direction, the main pole is located in the lumen of the upright pole, and the upper The sliding sleeve and the lowering sleeve are respectively sleeved on the outside of the vertical pole. 7. The travel bed according to claim 6, characterized in that: the main rod and the upper sliding sleeve are fixedly connected through a first fixed column, and the main rod and the lower sliding sleeve are fixedly connected through a second fixed column. , the third connecting rod and the upright rod are rotationally connected through a seventh axis, the upper part of the upright rod is provided with a first limiting groove, and the lower part of the upright rod is provided with a second limiting groove, the The main rod is provided with a third limiting groove, the first limiting groove, the second limiting groove and the third limiting groove all extend in the up and down direction, and the first fixing post is partially located on the The second fixing post is partially located in the second limiting groove and can be slidably arranged along the length extension direction of the first limiting groove. The seventh shaft passes through the third limiting groove and is slidably disposed along the length extending direction of the third limiting groove. 8. The travel bed according to claim 5, characterized in that: the main rod is located outside the vertical rod and is arranged parallel to the vertical rod, and the upper sliding sleeve and the lower sliding sleeve are respectively sleeved. on the outside of the pole. 9. The travel cot according to claim 1, characterized in that: each of the transverse rail assemblies includes two transverse rails with one end portion rotationally connected to each other, and each of the side rail assemblies includes one end portion. Two side rails are rotatably connected to each other, and the other end of the transverse rail and the other end of the side rail are rotatably connected to the vertical pole respectively. 10. The travel bed according to claim 1 or 9, characterized in that: each of the vertical poles includes a vertical pole support extending in the up and down direction and a connection fixed on the upper end of the vertical pole. components, the transverse rail assembly and the side rail assembly are rotatably connected to the connecting piece respectively.