CN212939052U - Foldable infant bed - Google Patents

Abstract

A foldable infant bed comprises a plurality of vertical supporting frames and chassis supporting frames arranged among the vertical supporting frames, wherein each chassis supporting frame comprises a central seat positioned in the middle and a plurality of groups of connecting rod mechanisms arranged around the central seat, each group of connecting rod mechanisms is respectively connected between the corresponding vertical supporting frame and the central seat, each group of connecting rod mechanisms comprises an upper bottom rod positioned on the upper part and a lower bottom rod positioned below the upper bottom rod, one end part of the upper bottom rod is pivotally connected with the upper part of the central seat around a first bottom shaft, the other end part of the upper bottom rod is rotationally arranged with the corresponding vertical supporting frame through a first ball joint, one end part of the lower bottom rod is pivotally connected with the lower part of the central seat around a second bottom shaft, the other end part of the lower bottom rod is rotationally arranged with the corresponding vertical supporting frame through a second ball joint, the foldable infant bed is driven by the plurality of groups of connecting rod mechanisms to enable the vertical supporting frames to be synchronously closed or opened, and then realize accomplishing the folding or the expansion of bed, folding or expand convenient operation, folding back is small and easily deposit, convenient to carry.

Description

Foldable infant bed

Technical Field

The utility model relates to a foldable infant bed.

Background

Foldable cots are widely used for their convenience, especially as the current two-child policy is released, there are increasing demands for foldable cots, and there are also increasing demands for their performance, especially maneuverability and size.

In the prior art, as shown in the publication No. CN109619911A, the lower frame includes a central seat located in the middle, and a plurality of bottom link groups connected between the central seat and the corresponding corner joints of the lower frame, the central seat includes an upper central group and a lower central group capable of moving up and down relatively, a deformable triangular mechanism is formed between each bottom link group and the upper central group, and a deformable four-bar mechanism is formed between each bottom link group and the vertical rod.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a foldable infant bed.

In order to solve the technical problem, the utility model discloses a technical scheme is: a foldable infant bed with an unfolded position and a folded position comprises a plurality of upright brackets and a chassis bracket arranged between the upright brackets, wherein the chassis bracket comprises a central seat positioned in the middle part and a plurality of groups of link mechanisms arranged around the central seat, each group of link mechanisms is respectively connected between the corresponding upright bracket and the central seat, each group of link mechanisms comprises an upper bottom rod positioned on the upper part and a lower bottom rod positioned below the upper bottom rod, one end part of the upper bottom rod is pivotally connected with the upper part of the central seat around a first bottom shaft, the other end part of the upper bottom rod is rotationally arranged with the corresponding upright bracket through a first ball joint, one end part of the lower bottom rod is pivotally connected with the lower part of the central seat around a second bottom shaft, and the other end part of the lower bottom rod is rotationally arranged with the corresponding upright bracket through a second ball joint, and in the process that the center seat moves upwards, the plurality of vertical support frames are driven to approach synchronously under the drive of the plurality of groups of connecting rod mechanisms, and in the process that the center seat returns to move downwards, the plurality of vertical support frames are driven to open synchronously under the drive of the plurality of groups of connecting rod mechanisms.

In some embodiments, an upper expansion limiting mechanism is disposed between each upper bottom rod and the central seat, and/or between each upper bottom rod and the corresponding vertical support rod, and a lower expansion limiting mechanism is disposed between each lower bottom rod and the central seat, and/or between each lower bottom rod and the corresponding vertical support rod.

In some embodiments, the upper unfolding limiting mechanism comprises a plurality of upper one-way joints fixed on the upper part of the central seat, the lower unfolding limiting mechanism comprises a plurality of lower one-way joints fixed on the lower part of the central seat, one end of the upper bottom rod is pivotally connected with the upper one-way joints around a first bottom shaft, one end of the lower bottom rod is pivotally connected with the lower one-way joints around a second bottom shaft, when the foldable infant bed is in the unfolded position, the upper bottom rod is abutted against the closed top part of the upper one-way joints, the lower bottom rod is abutted against the closed top part of the lower one-way joints, and the upper one-way joints and the lower one-way joints are integrally formed on the central seat.

In some embodiments, the first bottom axis of each set of said linkages is disposed parallel to said second bottom axis.

In some embodiments, the number of the upright brackets is four, the upright brackets include two first upright brackets and two second upright brackets, the upper portions of the two first upright brackets are respectively pivotally connected with the upper portions of the corresponding second upright brackets to form side bedsteads positioned at the left side and the right side, the side bedsteads at each side further include a first bed enclosure seat and a second bed enclosure seat, the upper portion of the first upright bracket, the upper portion of the second upright bracket, the first bed enclosure seat and the second bed enclosure seat at each side are rotatably connected through concentric shafts, and a side bracket lock mechanism for controlling the locking position is arranged between the four parts.

In some embodiments, the first bed fence comprises two first bed fence rods with one ends rotatably connected through a first unidirectional rotating joint, the other ends of the first bed fence rods are rotatably connected on the first bed fence seat through first fence rod shafts,

the second bed enclosure comprises two second bed enclosure rods, one end parts of the second bed enclosure rods are rotatably connected through second one-way rotating joints, the other end parts of the second bed enclosure rods are rotatably connected to the second bed enclosure seats through second enclosure rod shafts,

the first pin shaft is arranged in parallel with the rotating shaft of the first unidirectional rotation joint and is arranged in a space perpendicular to the concentric shaft, and the second pin shaft is arranged in parallel with the rotating shaft of the second unidirectional rotation joint and is also arranged in a space perpendicular to the concentric shaft.

In some embodiments, the linkage mechanism has four sets, with the central seat in between being X-shaped in the deployed position.

The scope of the present invention is not limited to the technical solutions formed by specific combinations of the above technical features, and other technical solutions formed by arbitrary combinations of the above technical features or equivalent features should be covered. For example, the above features and the technical features (but not limited to) having similar functions disclosed in the present application are mutually replaced to form the technical solution.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model provides a collapsible infant's bed makes many upright strut frame draw close or strut mutually in step through the drive at multiunit link mechanism down, and then realizes accomplishing the folding or the expansion of bed, folding or expand convenient operation, folding back is small and easily deposit convenient to carry.

Drawings

FIG. 1 is a schematic perspective view of a foldable infant bed in an unfolded state;

FIG. 2 is a side view of the foldable infant bed in an expanded state;

FIG. 3 is a schematic perspective view of the collapsible infant bed in a collapsed state;

FIG. 4 is an enlarged exploded view taken at A of FIG. 1;

FIG. 5 is a schematic view of the internal structure of the side bed frame in the unfolded position;

FIG. 6 is a schematic view showing the internal structure of the side frame during folding;

wherein 1, a side bed frame; 11. a first vertical support frame; 12. a second vertical support frame; 13. a first bed rail seat; 14. a second bed fence seat;

15. a side bracket lock mechanism; 151. a moving member; 152. a first drive slot; 153. a second driving groove; 154. a first guide groove; 154a, a first channel section; 154b, a first keyway segment; 155. a second guide groove; 155a, a second guide groove section; 155b, a second keyway section; 156. an elastic limiting part; 156a, a limit bump; 157. a slider slot; 158. reinforcing iron sheets; 159. a slider; 159a, a slider positioning member; 2. a first bed rail; 21. a first boom shaft; 22. a first unidirectional rotational joint; 3. a second bed rail; 31. a second boom shaft; 32. a second unidirectional rotation joint; 4. a chassis strut; 41. a center seat; 411. a first bottom shaft pivot; 412. a second bottom shaft pivot; 413. an upper one-way joint; 414. a lower one-way joint; 42. a link mechanism; 421. an upper bottom rod; 422. and a lower bottom rod.

Detailed Description

As shown in the figures, the invention provides a foldable infant bed with an unfolding position and a folding position, which comprises four upright brackets and a chassis bracket 4 arranged among the upright brackets, wherein the chassis bracket 4 comprises a central seat 41 positioned in the middle and four groups of link mechanisms 42 arranged around the central seat 41, the central seat 41 is an X-shaped seat divided into an upper part and a lower part which are integrally formed, and the upper part and the lower part are respectively provided with four bottom shaft pivots which are symmetrical up and down.

Four sets of link mechanisms 42 are respectively connected between the corresponding upright support frames and the central base 41, each set of link mechanisms 42 is respectively connected between the corresponding upright support frame and the central base, each set of link mechanisms 42 comprises an upper bottom rod 421 positioned on the upper part and a lower bottom rod 422 positioned below the upper bottom rod 421, one end part of the upper bottom rod 421 is pivotally connected with the upper part of the central base 41 around a first bottom shaft 411, the other end part of the upper bottom rod 421 is rotatably arranged with the corresponding upright support frame through a first ball joint, one end part of the lower bottom rod 422 is pivotally connected with the lower part of the central base 41 around a second bottom shaft 412, and the other end part of the lower bottom rod 422 is rotatably arranged with the corresponding upright support frame through a second ball joint. An upper unfolding limiting mechanism is arranged between each upper bottom rod 421 and the central seat 41, a lower unfolding limiting mechanism is arranged between each lower bottom rod 422 and the central seat 41, wherein the upper unfolding limiting mechanism comprises a plurality of upper one-way joints 413 which are fixed on the upper part of the central seat 41, the lower unfolding limiting mechanism comprises a plurality of lower one-way joints 414 which are fixed on the upper part of the lower part of the central seat 41, one end part of each upper bottom rod 421 is pivotally connected with the upper one-way joints 413 around a first bottom shaft 411, one end part of each lower bottom rod 422 is pivotally connected with the lower one-way joints 414 around a second bottom shaft 412, when the foldable infant bed is in the unfolded position, the upper bottom rods 421 abut against the top parts of the upper one-way joints 413, the lower bottom rods 422 abut against the top parts of the lower one-way joints 414, and the upper one-way joints 413 and the lower one-way joints 414 form a whole on the central seat 41.

In this embodiment, as shown in fig. 1-3, each first upright frame 11 is pivotally connected to a corresponding second upright frame 12 to form a side frame 1 on one side, so as to form two side frames 1 symmetrically disposed on both sides of the foldable infant bed, and each side frame 1 further includes a first bed surrounding seat 13 and a second bed surrounding seat 14, one end of each of which is rotatably disposed around a concentric axis with the first upright frame 11 and the second upright frame 12.

As shown in fig. 1-3, each side frame 1 further comprises a side frame locking mechanism 15, in this embodiment, the side frame locking mechanism 15 can adopt the embodiment 1 of synchronously folding and unfolding:

the side bracket lock mechanism 15 includes a moving member 151 using a pin, a first driving groove 152 disposed on the first standing frame 11, a second driving groove 153 disposed on the second standing frame 12, a first guiding groove 154 disposed on the first bed surrounding seat 13, and a second guiding groove 155 disposed on the second bed surrounding seat 14.

In this embodiment, as shown in fig. 2, the first guide groove 154 includes a first guide groove section 154a, a first locking groove section 154b bent with respect to the extending direction of the first guide groove section 154a and communicating with one end thereof, the second guide groove 155 includes a second guide groove section 155a, a second locking groove section 155b bent with respect to the extending direction of the second guide groove section 155a and communicating with one end thereof, the first locking groove section 154b and the second locking groove section 155b are both straight grooves, when the side frame 1 is located in the unfolded position, the moving member 151 of the pin is located in the first locking groove section 154b and the second locking groove section 155b at the same time, at this time, the center lines of the first locking groove section 154b and the second locking groove section 155b coincide with the connecting line between the center of the moving member 151 and the axis of the concentric shaft, the first bed fence seat 13 and the second bed fence seat 14 cannot slide relative to the moving member 151, that is, the positions of the first bed fence seat 13 and the second bed fence seat 14 are locked. At this time, the first standing frame 11 and the second standing frame 12 are angularly spread to the pole root position, so the position of the moving member 151 is positioned under the action of the first driving groove 152 and the second driving groove 153, and the first bedrail seat 13 and the second bedrail seat 14 are fixed relative to the first standing frame 11 and the second standing frame 12.

As shown in fig. 4-6, the second guiding groove segment 155a has an elastic stop 156 extending outward from a part of the groove wall and forming a stop protrusion 156a at an end thereof, the stop protrusion 156a is adjacent to the other end of the second guiding groove segment 155a, and the stop protrusion 156a is partially blocked on the moving path of the moving member 151, during the folding process, the moving member 151 overcomes the stop protrusion 156a and enters the other end of the second guiding groove segment 155a, at this time, the stop protrusion 156a plays a role in damping the unfolding of the moving member 151, and the user needs to rotate the second bed surrounding base 14 upward with a slight force to unfold the foldable infant bed, that is, the elastic stop 156 having the stop protrusion 156a plays a role in positioning the folded position of the whole foldable infant bed.

As shown in FIG. 4, a reinforcing iron plate 158 is fixed to the first bed rail 13, a reinforcing iron plate groove corresponding to the first guide groove 154 is formed in each reinforcing iron plate 158, and the moving member 151 is inserted into the reinforcing iron plate groove, so that the pressure resistance of the whole side stand lock mechanism 15 is enhanced, and the side stand lock mechanism 15 is prevented from being broken when the whole foldable infant bed is subjected to a large pressure.

In this embodiment, as shown in fig. 4, the first driving groove 152 and the second driving groove 153 are respectively straight grooves, a line connecting the centers of the moving member 151 passing through the two driving grooves and the axis of the concentric shaft forms a symmetry line, the first driving groove 152 and the second driving groove 153 are symmetrical with respect to the symmetry line, and the moving member 151 approaches to or departs from the concentric shaft along a straight line.

As shown in fig. 4, the side stand lock mechanism 15 further includes a slider groove 157 formed in the second standing frame 12, a slider 159 slidably disposed in the slider groove 157, and a slider positioning member 159a fixed to the slider groove 157 and the slider 159, the slider groove 157 is a cross-shaped groove, the second driving groove 153 is located at the center of the corresponding slider groove 157, the slider positioning member 159a is formed with a slider positioning member groove corresponding to the second driving groove 153, and the moving member 151 penetrates the slider 159 and is inserted into the slider positioning member groove, so that the entire moving member 151 can stably slide in the driving groove when the foldable infant bed is unfolded or folded, and the center line of the moving member 151 is not twisted.

During folding or unfolding of the infant bed, the moving member 151 slides along the first driving groove 152, the second driving groove 153, the first guide groove 154, and the second guide groove 155, and the moving member 151 gradually moves toward or away from the concentric axis in a radial direction.

The distances from one end to the other end of the first driving groove 152, from one end to the other end of the second driving groove 153, from one end to the other end of the first guide groove 154, and from one end to the other end of the second guide groove 155 to the concentric shafts gradually decrease, and intersect with the radial direction of the circle where the axes of the concentric shafts are located.

In this embodiment, as shown in FIGS. 1-3, the foldable infant bed further includes: one end of the first bed surrounding rod 2 is rotatably connected to the first bed surrounding seat 13 on each side through a first surrounding rod shaft 21, and one end of the second bed surrounding rod 3 is rotatably connected to the second bed surrounding seat 14 on each side through a second surrounding rod shaft 31; a first unidirectional rotation joint 22 is arranged between the other ends of the first bed surrounding rods 2 at two sides, and a second unidirectional rotation joint 32 is arranged between the other ends of the second bed surrounding rods 3 at two sides.

The first boom shaft 21 is disposed parallel to the rotation shaft of the first unidirectional rotation joint 22 and is disposed spatially perpendicular to the concentric axis, and the second boom shaft 31 is disposed parallel to the rotation shaft of the second unidirectional rotation joint 32 and is also disposed spatially perpendicular to the concentric axis. The first unidirectional rotation joint 22 and the second unidirectional rotation joint 32 are prior art and will not be described in detail.

The working principle of the invention is as follows: taking the embodiment 1 of the side stand lock mechanism 15 as an example, when the stroller is unfolded or folded, and the center seat 41 moves upward, under the action of the upper bottom bar 421 and the lower bottom bar 422, the two first standing brackets 11 and the two second standing brackets 12 are driven, and the four stand brackets move to the center synchronously and get close, or in other words, the adjacent first standing brackets 11 and the second standing brackets 12, between the two first standing brackets 11, and between the two second standing brackets 12 get close together respectively, so as to drive the side stand lock mechanism 15 to fold the whole foldable infant bed.

When the central seat 41 moves downward, under the action of the upper bottom bar 421 and the lower bottom bar 422, the two first standing frames 11 and the two second standing frames 12 are driven to be synchronously stretched out, or in other words, when the adjacent first standing frames 11 and the second standing frames 12, between the two first standing frames 11, and between the two second standing frames 12 are respectively separated, the side frame lock mechanism 15 is driven to realize the unfolding of the whole foldable infant bed, and when the four groups of connecting rods are unfolded to the upper unfolding limit mechanism and the lower unfolding limit mechanism on the central seat 41, the upper folding limit mechanism and the lower folding limit mechanism on the upper one-way joint 413 and the lower one-way joint 414 are abutted and stopped, and the adjacent first standing frames 11 and the second standing frames 12, between the two first standing frames 11, and between the two second standing frames 12 are unfolded to the limit positions.

And two side bedstead 1 are around concentric axis expandes or folding in-process, drive two first bed surrounding rod 2 and open up the exhibition or draw close through first unidirectional rotation joint 22, second bed surrounding rod 3 opens up the exhibition or draw close through second unidirectional rotation joint 32, through making many upright strut frame synchronous phase draw close or draw open under multiunit link mechanism's drive like this, rethread side support latch mechanism 15, drive first bed surrounding rod 2, second bed surrounding rod 3 extends or draws close along with it, and then realize accomplishing folding or expansion of bed, folding or expansion convenient operation, small and easily depositing, convenient to carry.

In addition, in the embodiment, the unidirectional rotating joints are adopted between the two first bed surrounding rods 2 and the two second bed surrounding rods 3, only one rotating shaft is arranged inside the unidirectional rotating joints to match with the unfolding or folding of the whole foldable infant bed, and a double-rotating-shaft mode can also be adopted, so long as the purpose of synchronously unfolding upwards or folding downwards along with the matching of the unfolding or folding of the foldable infant bed is achieved, and the unidirectional rotating joints belong to the protection scope of the invention.

In addition, the side stand lock mechanism may also adopt other structures, such as the side stand lock mechanism shown in patent publication No. CN 209733216U, which cannot perform the function of simultaneous folding, but can also be locked in the unfolded position.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (7)

1. A foldable infant bed with an unfolded position and a folded position, comprising a plurality of standing brackets and a chassis bracket (4) arranged between the standing brackets, wherein the chassis bracket (4) comprises a central seat (41) positioned in the middle and a plurality of groups of link mechanisms (42) arranged around the central seat (41), each group of link mechanisms (42) is respectively connected between the corresponding standing bracket and the central seat, characterized in that: each group of the link mechanisms (42) comprises an upper bottom rod (421) positioned at the upper part and a lower bottom rod (422) positioned below the upper bottom rod (421), one end part of the upper bottom rod (421) is pivotally connected with the upper part of the central seat (41) around a first bottom shaft (411), the other end of the upper bottom rod (421) and the corresponding upright support frame are rotationally arranged through a first ball joint, one end part of the lower bottom rod (422) is pivotally connected with the lower part of the central seat (41) around a second bottom shaft (412), the other end of the lower bottom rod (422) and the corresponding upright support frame are rotationally arranged through a second ball joint, in the process that the central seat moves upwards, a plurality of upright brackets are driven to synchronously approach together by a plurality of groups of connecting rod mechanisms (42), and in the process that the central seat returns to move downwards, the plurality of upright brackets are driven to be synchronously unfolded under the driving of the plurality of groups of connecting rod mechanisms (42).

2. A foldable infant bed according to claim 1, characterized in that: an upper expansion limiting mechanism is arranged between each upper bottom rod (421) and the central seat (41) and/or between each upper bottom rod (421) and the corresponding vertical support rod, and a lower expansion limiting mechanism is arranged between each lower bottom rod (422) and the central seat (41) and/or between each lower bottom rod (422) and the corresponding vertical support rod.

3. A foldable infant bed according to claim 2, characterized in that: the upper unfolding limiting mechanism comprises a plurality of upper capped one-way joints (413) fixed on the upper part of the central seat (41), the lower unfolding limiting mechanism comprises a plurality of lower single-direction joints (414) which are fixed on the upper capping part at the lower part of the central seat (41), one end part of the upper bottom rod (421) is pivotally connected with the upper one-way joint (413) around a first bottom shaft (411), one end of the lower bottom rod (422) is pivotally connected with the lower one-way joint (414) around a second bottom shaft (412), when the foldable infant bed is in the unfolded position, the upper bottom bar (421) abuts against the top seal of the upper one-way joint (413), the lower bottom rod (422) is abutted against the top sealing part of the lower one-way joint (414), the upper one-way joint (413) and the lower one-way joint (414) form a whole on the central seat (41).

4. A foldable infant bed according to claim 3, characterized in that: the first bottom shaft (411) and the second bottom shaft (412) on each group of the link mechanisms (42) are arranged in parallel.

5. A foldable infant bed according to any one of claims 1-4, characterized in that: the four upright support frames comprise two first upright support frames (11) and two second upright support frames (12), the upper parts of the two first upright support frames (11) are respectively in pivot connection with the upper parts of the corresponding second upright support frames (12) to form side bed frames positioned at the left side and the right side, the side bed frame at each side further comprises a first bed surrounding seat (13) and a second bed surrounding seat (14), the upper parts of the first upright support frames (11), the upper parts of the second upright support frames (12), the first bed surrounding seat (13) and the second bed surrounding seat (14) at each side are rotatably connected through concentric shafts, and a side frame lock mechanism for controlling a locking position is arranged between the four upright support frames.

6. A foldable infant bed according to claim 5, characterized in that: the first bed enclosure comprises two first bed enclosure rods (2) with one end parts rotationally connected through a first one-way rotating joint (22), the other end of the first bed surrounding rod (2) is rotatably connected to the first bed surrounding seat (13) through a first surrounding rod shaft (21), the second bed enclosure comprises two second bed enclosure rods (3) with one end parts rotatably connected through second one-way rotary joints (32), the other end of the second bed surrounding rod (3) is rotatably connected to the second bed surrounding seat (14) through a second surrounding rod shaft (31), the first surrounding rod shaft (21) is arranged in parallel with a rotating shaft on the first unidirectional rotating joint (22) and is arranged in a space vertical to the concentric shaft, the second enclosing rod shaft (31) is arranged in parallel with a rotating shaft on the second unidirectional rotating joint (32) and is also arranged in a space vertical mode with the concentric shaft.

7. A foldable infant bed according to claim 5, characterized in that: the linkage (42) has four sets, with the central seat (41) in the middle in the deployed position being X-shaped.

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