CN111419038B - Lower folding mechanism of children game bed - Google Patents
Lower folding mechanism of children game bed Download PDFInfo
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- CN111419038B CN111419038B CN202010240026.9A CN202010240026A CN111419038B CN 111419038 B CN111419038 B CN 111419038B CN 202010240026 A CN202010240026 A CN 202010240026A CN 111419038 B CN111419038 B CN 111419038B
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- unlocking
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- 230000007246 mechanism Effects 0.000 title claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims description 40
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- 238000003825 pressing Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 238000001125 extrusion Methods 0.000 description 12
- 230000033001 locomotion Effects 0.000 description 10
- 230000006872 improvement Effects 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002337 anti-port Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47D—FURNITURE SPECIALLY ADAPTED FOR CHILDREN
- A47D7/00—Children's beds
- A47D7/002—Children's beds foldable
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47D—FURNITURE SPECIALLY ADAPTED FOR CHILDREN
- A47D13/00—Other nursery furniture
- A47D13/06—Children's play- pens
- A47D13/061—Children's play- pens foldable
- A47D13/063—Children's play- pens foldable with soft walls
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47D—FURNITURE SPECIALLY ADAPTED FOR CHILDREN
- A47D13/00—Other nursery furniture
- A47D13/06—Children's play- pens
- A47D13/061—Children's play- pens foldable
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47D—FURNITURE SPECIALLY ADAPTED FOR CHILDREN
- A47D15/00—Accessories for children's furniture, e.g. safety belts or baby-bottle holders
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pediatric Medicine (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
The invention relates to a lower folding mechanism of a children game bed, which comprises a base, a connecting rod and a swinging block, wherein the swinging block can be arranged in an inner cavity at the lower part of the base in a swinging manner, the connecting rod consists of an upper connecting rod and a lower connecting rod, one end of the upper connecting rod and one end of the lower connecting rod are respectively and rotatably connected with the corresponding position of a frame body, the other end of the upper connecting rod can be rotatably connected with the base, the other end of the lower connecting rod is rotatably connected with the base, the end part of the lower connecting rod extending into the inner cavity at the lower part of the base is linked with the swinging block, a driving roller which can be contacted with the end part of the lower connecting rod in a propping manner and can push the swinging block to swing leftwards and a connecting shaft which can be connected with a pull rope are arranged on the swinging block at the lower part at the left lower part of a lower shaft pin, and the connecting shaft connected with the pull rope is fixed at the left side of the swinging shaft, the invention has the advantages that: the structure is ingenious and firm, the use is flexible and convenient, and the production cost is low.
Description
Technical Field
The invention relates to the technical field of child bed manufacturing, in particular to a lower folding mechanism of a child game bed.
Background
The original Chinese patent application with the application number of CN201810225905.7 named as 'lower folding device of children game bed' of the applicant discloses a lower folding device of a children game bed, which comprises bed legs, an upper connecting rod and a lower connecting rod, wherein one end of the upper connecting rod and one end of the lower connecting rod are respectively movably connected with corresponding positions of a central controller, the other ends of the upper connecting rod and the lower connecting rod are respectively movably connected with corresponding positions at the bottom of the bed legs, and the structure that the lower connecting rod is movably connected with the bed legs is as follows: the lower connecting rod extends into the bed leg concave cavity and is connected with the middle part of the transverse shaft pin, two ends of the transverse shaft pin can be correspondingly and movably arranged in the bent sliding grooves at two sides of the bed leg concave cavity, the bent sliding grooves are symmetrically arranged at two sides of the bed leg concave cavity, and the upper connecting rod is movably connected with the lower connecting rod close to the transverse shaft pin through the linkage rod. The advantages are that: the central controller supports the cross rod to be unfolded in place when the bed body is at a high position, the bed body is convenient to unfold, the end part of the lower connecting rod is guided by the geometric shape of the curved sliding groove, the bottom of the bed leg is in turn limited by the limiting effect of the transverse shaft pin, and the curved sliding groove limits the position change track of the bottom of the bed leg and the deviation angle of the top of the bed leg relative to the central controller. However, the lower folding device is complex, and in order to realize the process that the bed legs are unfolded obliquely outwards and then return to the vertical state, a bent sliding groove needs to be arranged, so that the lower folding device is inconvenient to manufacture, has high manufacturing cost, and has a structure which needs to be improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a lower folding mechanism of a child game bed, which has the advantages of ingenious and firm structure, flexible and convenient use and low production cost.
The technical scheme adopted by the invention for solving the technical problems is as follows: lower folding mechanism of children's recreation bed, including connecting at the base of every footpost bottom, one end can with base swing joint other end can with the bed end middle part can fold and expand the connecting rod that the folding drive device activity of the bed body is connected, its characterized in that: the lower folding mechanism also comprises a swinging block which is arranged in the inner cavity of the base and can pull the pull rope, the swinging block can be arranged in the inner cavity of the lower part of the base in a swinging way through a swinging shaft, a connecting rod which is movably connected with each base is composed of an upper connecting rod and a lower connecting rod which are arranged up and down, one end of each of the upper connecting rod and the lower connecting rod is respectively and rotatably connected with the corresponding position of a frame body in the folding driving device, the other end of each of the upper connecting rods extends into the inner cavity of the upper part of the base and is rotatably connected with the base through an upper shaft pin, the other end of each of the lower connecting rods extends into the inner cavity of the lower part of the base and is rotatably connected with the base through a lower shaft pin, the end part of each of the lower connecting rods extending into the inner cavity of the lower part of the base is linked with the swinging block, the lower shaft pin is arranged in the inner cavity of the base at the right upper part of the swinging block, a driving roller which can push the swinging block to swing leftwards through the end part of the lower connecting rod and a connecting shaft which can be connected with the pull rope, the swinging shaft is arranged at the lower part of the swinging block at the left lower part of the lower shaft pin, and the connecting shaft connected with the pull rope is fixed at the left side of the swinging shaft.
As an improvement, the swinging block is an integral structure formed by symmetrically connecting two fan-shaped swinging pieces, the middle part between the two swinging pieces is fixed together by a swinging piece connecting column, and an inner cavity in the swinging block is a cavity formed between the two swinging pieces.
Further improve, driving roller, connecting axle are arranged in the cavity of swing piece respectively, the lower connecting rod tip that is arranged in the base inner chamber stretches into the cavity of swing piece, the lower connecting rod tip that stretches into in the swing piece cavity is the arc tip, when child's recreation bed expandes completely and makes the other end downwardly movement of lower connecting rod to the lowest end, the bottom and the driving roller of the arc tip of lower connecting rod support together, when child's recreation bed packed up gradually and folding, the terminal surface of the arc tip of lower connecting rod keeps away from the driving roller axle center around the driving roller and moves, when moving to the highest end on the support body, a side edge and the driving roller of arc tip support together.
The transmission roller is composed of positioning shaft pins which are connected to the two swinging pieces in a penetrating way and a transmission wheel which is sleeved on the positioning shaft pins in the inner cavity of the swinging block in a rotating way, and the side wall of the transmission wheel can be in contact with the end part of the cambered surface; two ends of the connecting shaft are respectively fixed on two swing pieces which are arranged in parallel left and right in a penetrating way, the pull rope is connected with the lantern ring, and the lantern ring is sleeved on the connecting shaft.
As an improvement, the bottom of the base is provided with rollers which facilitate the bed legs to move back and forth.
As an improvement, the folding driving device comprises a frame body which can move up and down relative to the bed legs, a guide rod which is vertically fixed at the middle part of the frame body and extends downwards from the middle part of the bottom surface of the frame body, and a sliding seat which can move up and down along the guide rod, the other ends of the upper connecting rod and the lower connecting rod which are movably connected with each bed leg are respectively connected with the corresponding positions of the frame body in a rotating way through the upper rotating shaft pin and the lower rotating shaft pin, the sliding seat is movably connected with the corresponding lower connecting rod through a transmission rod, the lower end of the transmission rod is rotatably connected with the corresponding side surface of the sliding seat through a lower transmission pin shaft, the upper end of the transmission rod is connected with the lower connecting rod in a rotating way through an upper transmission shaft pin, when the child game bed is completely unfolded, the upper transmission shaft pin is positioned on the connecting line of the upper rotating shaft pin and the lower transmission shaft pin, or the upper transmission shaft pin is positioned above or below the connecting line of the upper rotating shaft pin and the lower transmission shaft pin.
The bed body is further improved, a locking mechanism which can keep an unfolded state after the bed body is completely unfolded is further arranged on the frame body, the locking mechanism comprises an unlocking pull rod and a locking piece, the unlocking pull rod can be arranged in an inner cavity of the guide rod in a vertically movable mode, a vertical through hole which penetrates through the center of the frame body from top to bottom is formed in the center of the frame body, the guide rod penetrates through the vertical through hole which is fixed in the frame body, the top surface of the guide rod is flush with the top surface of the frame body, the lower end of the guide rod extends downwards from the bottom surface of the frame body, an unlocking structure of the unlocking pull rod is arranged on the top surface of the frame body, the locking piece is located in the inner cavity of the unlocking pull rod, when the folding driving device moves downwards to the lowest position and the bed body is completely unfolded, the locking piece can extend out of the corresponding side surfaces of the unlocking pull rod and is supported and locked with the bottom surface of the sliding seat, and when the bed body needs to be folded and unlocked, the locking piece is driven by the unlocking structure to retract into the inner cavity of the unlocking pull rod and slide The movable seat is separated, so that the sliding seat can move downwards to be unlocked.
As an improvement, the locking piece is positioned in the lower inner cavity of the unlocking pull rod and consists of at least two positioning pieces, the lower part of each positioning piece is provided with a connecting hole for inserting a transverse shaft pin, the positioning piece above the connecting hole is provided with an inclined strip-shaped hole, the positioning pieces are folded together like a folding fan, the lower parts of the positioning pieces are inserted together through the connecting hole by the transverse shaft pin so that the positioning pieces can be unfolded and folded left and right like the folding fan, the left end and the right end of the transverse shaft pin are respectively fixed on the left side and the right side corresponding to the lower part of the guide rod, a folding pull shaft capable of moving up and down in the inclined strip-shaped hole to unfold and fold the positioning piece is arranged in the inclined strip-shaped hole in a penetrating manner, the left end and the right end of the folding pull shaft are fixed on the left side and the right side corresponding to the unlocking pull rod in a radial direction, and the unlocking pull rod is provided with a notch capable of extending out the side of the unlocking pull rod when the positioning pieces are unfolded left and right, the left side surface and the right side surface of the guide rod corresponding to the notch are respectively provided with a through cavity which extends out of the side surface of the guide rod after the positioning piece passes through the notch when the positioning piece is unfolded, the top surface of the positioning piece extending out of the through cavity can be supported with the bottom surface of the sliding seat, the left side surface and the right side surface of the unlocking pull rod positioned at the upper part of the middle inner cavity of the unlocking pull rod are respectively provided with a vertical waist-shaped hole, a fixed shaft pin radially penetrates through the waist-shaped holes, the left end of the fixed shaft pin penetrates through the left side surface of the unlocking pull rod and is fixed with the corresponding left side surface of the guide rod, the right end of the fixed shaft pin penetrates through the right side surface of the unlocking pull rod and is fixed with the corresponding right side surface of the guide rod, a return spring is arranged in the inner cavity of the unlocking pull rod positioned above the notch, the bottom of the return spring is supported with the supporting part in the inner cavity of the unlocking pull rod above the notch, and the upper end of the return spring can be supported with the fixed shaft pin in a propping manner, the distance between the upper hole and the lower hole of the waist-shaped hole is larger than the maximum distance of the positioning piece after the positioning piece is completely folded by the vertical movement of the folding pull shaft.
The unlocking structure comprises a pull ring and a pull rope body, and when the pull ring is selected, two ends of the pull ring are connected with a pull shaft which is connected to the top surface of the unlocking pull rod and can rotate.
The improved structure is characterized in that the top of the frame body is connected with a pulling part capable of pulling the frame body upwards, the unlocking structure is that an unlocking pull rod extends out of a pressing extending end of a vertical through hole or a pressing leveling end of the top surface of the unlocking pull rod leveling with the top surface of the vertical through hole, a locking sheet is positioned in an inner cavity of the lower part of the unlocking pull rod and consists of at least two positioning sheets, the upper part of each positioning sheet is provided with a connecting hole for inserting a transverse shaft pin, oblique strip-shaped holes are arranged on the positioning sheets below the connecting hole, the positioning sheets are folded together like a folding fan, the upper parts of the positioning sheets are inserted together through the connecting holes by the transverse shaft pin so that the positioning sheets can be unfolded and folded like the folding fan, the left end and the right end of the transverse shaft pin are respectively fixed on the left corresponding side surface and the right side surface of the upper part of the guide rod, a folding pull shaft capable of moving up and down in the oblique strip-shaped holes is inserted in the oblique strip-shaped holes so as to unfold and fold the positioning sheets, the left end and the right end of the folding pull shaft are radially fixed on the left side surface and the right side surface corresponding to the unlocking pull rod, the unlocking pull rod is provided with a notch which can extend out of the side surface of the unlocking pull rod when a positioning sheet is unfolded left and right, the left side surface and the right side surface of the guide rod corresponding to the notch are respectively provided with a through cavity which extends out of the side surface of the guide rod after the positioning sheet is unfolded, a buckling surface of the positioning sheet extending out of the through cavity can be buckled with the bottom surface of the sliding seat, the left side surface and the right side surface of the unlocking pull rod positioned at the upper part of the middle inner cavity of the unlocking pull rod are respectively provided with a vertical waist-shaped hole, the transverse shaft pin is radially penetrated in the waist-shaped hole, a return spring is arranged in the inner cavity of the guide rod positioned below the through cavity, the upper end of the return spring is in contact with the unlocking pull rod, the lower end of the return spring is supported with a support rod positioned in the inner cavity of the guide rod, and the distance between the upper hole and the lower hole of the waist-shaped hole is larger than the maximum distance when the folding pull shaft moves up and down to enable the positioning sheet to be completely folded, after the top of the unlocking pull rod is pressed, the locking piece is driven to retract into the inner cavity of the unlocking pull rod and is separated from the sliding seat, and the pull part pulled upwards enables the sliding seat to move downwards to unlock.
Compared with the prior art, the invention has the advantages that: the folding and unfolding of the lower part of the children game bed are realized through the folding driving device and the swinging block together, the folding driving device and the swinging block realize linkage through the connecting rod, the connecting rod and the swinging block are both of a rigid structure with simple motion tracks, and the linkage mode is rolling friction, so the transmission efficiency is high and the children game bed is not easy to damage; the linkage of the swinging block and the lower connecting rod converts the complex motion of pulling the pull rope by the connecting rod into the swinging of the swinging block driven by the end part of the lower connecting rod; when the child folding bed is completely unfolded, the transmission roller is abutted against the lower cambered surface of the cambered end part of the lower connecting rod, and the transmission roller plays a role in locking the lower connecting rod, so that the frame body is prevented from being arched, and the whole underframe is smooth; the four-bar mechanism is formed by ingeniously designing the connecting positions of the upper connecting bar and the lower connecting bar, so that when the child game bed is unfolded, the bed legs can generate a motion track which inclines outwards firstly and then returns to be vertical, the unfolding process can be divided into two sections, when the bed body is just unfolded, the unfolding amplitude of the upper ends of the bed legs is larger than that of the lower ends of the bed legs, the bed legs incline outwards, the guard bars on the upper part of the bed body can be in place firstly, and the guard bars of the bed body can be positioned in advance; in the process of continuously unfolding the bed body, the lower ends of the bed legs are continuously unfolded to the range of the upper ends of the bed legs, and the bed legs are restored to the vertical normal use state again, so that the complete unfolding of the bed body is realized. The design of the mechanism is beneficial to the expansion of the guard bar, so that the game bed can be opened and closed by a single person; because of the ingenious connecting rod connecting structure design, the bed legs of the children game bed have the two different unfolding processes when the children game bed is unfolded, all parts of the bed body are locked and detached in sequence and can be carried out step by step, after the upper surrounding rod of the bed body is positioned, the bed body can be completely opened only by continuously pushing the folding driving device downwards; when the bed body is folded, the folding driving device is pulled, so that the lower connecting rod can drive the transmission mechanism to be further linked with the pull rope to realize the folding operation of the protective rod, and the automatic operation of complete unlocking at one place by force is realized; when the folding bed is operated, the folding driving device controls the bed body to be opened and folded, the folding bed can be operated by one hand, the operation is safer, the folding bed is convenient and good in stability, and the middle part of the guard bar is provided with an elastic positioning body which can reversely pull the pull rope to reset the transmission mechanism at the bottom of the bed leg when the guard bar needs to be folded, so that the bed body is folded more smoothly.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention applied to a folding bed;
FIG. 2 is a perspective view of a base of FIG. 1 with half of the housing removed;
FIG. 3 is a schematic view of the base of FIG. 2 with half of the enclosure removed and half of the swing block cut away;
FIG. 4 is a perspective view of FIG. 2 after folding;
FIG. 5 is a perspective view of the folding of FIG. 4 continued until the folding is complete;
FIG. 6 is a schematic view of the arrangement of FIG. 4 showing the positional relationship of the drive rollers to the arcuate end portions;
FIG. 7 is a schematic view of the arrangement of FIG. 5 showing the positional relationship of the drive rollers to the arcuate end portions;
FIG. 8 is a top view of the leg and upper leg attachment shown in FIG. 1 with the leg and upper leg attachment removed;
FIG. 9 is a top view of FIG. 8 in exchange for a second type of locking mechanism;
FIG. 10 is a cross-sectional view taken along line A-A of FIG. 8;
FIG. 11 is a cross-sectional view of the pull portion of FIG. 10 after being pulled upwardly to unlock the latch;
FIG. 12 is a cross-sectional view taken along line B-B of FIG. 9;
FIG. 13 is a cross-sectional view of the pull portion of FIG. 12 after the release lever has been depressed;
FIG. 14 is a schematic view of the linkage of FIG. 2 connected to the respective leg, base (partial), folding drive;
FIG. 15 is a front perspective view of FIG. 14 with one of the sets of links remaining and with the set of links facing laterally;
FIG. 16 is a schematic view of the linkage of FIG. 15 with the folding drive, base and legs moved to different positions;
FIG. 17 is a perspective view of a guard bar of FIG. 2 with half of the housing removed from the middle;
FIG. 18 is a perspective view of the guard bar of FIG. 17 taken alone to show a particular construction of the guard bar;
FIG. 19 is a front elevational view of FIG. 18;
FIG. 20 is a schematic view of the configuration of the unlocking rotating portion of the elastic positioning body when the transmission mechanism in FIG. 19 releases the pull cord;
FIG. 21 is an exploded view of the structure of FIG. 18;
fig. 22 is an exploded view of the structure of fig. 11.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 22, the lower folding mechanism of the children game bed comprises a base 2 connected to the bottom of each leg 1, a connecting rod having one end movably connected with the base 2 and the other end movably connected with a folding driving device capable of folding and unfolding the bed body at the middle part of the bed bottom, a swinging block 3 arranged in the inner cavity of the base and capable of pulling a pulling rope 4, the swinging block 3 being swingably arranged in the inner cavity 23 of the lower part of the base 2 through a swinging shaft 37, the connecting rod movably connected with each base 2 consists of an upper connecting rod 21 and a lower connecting rod 31 arranged up and down, one end of the upper connecting rod 21 and one end of the lower connecting rod 31 are respectively rotatably connected with the corresponding position of a frame body 6 in the folding driving device, the other end of the upper connecting rod 21 extends into the inner cavity 22 of the upper part of the base 2 and is rotatably connected with the base 2 through an upper shaft pin 221, the other end of the lower connecting rod 31 extends into the inner cavity 23 of the lower part of the base 2 and is rotatably connected with the base 2 through a lower shaft pin 231, the end of the lower connecting rod extending into the lower cavity 23 of the base 2 is linked with the swing block 3, the lower shaft pin 231 is arranged in the inner cavity of the base at the right upper position of the swing block 3, the swing block 3 is provided with a driving roller 34 which can be contacted with the end of the lower connecting rod to push the swing block 3 to swing leftwards and a connecting shaft 36 which can be connected with the pull rope 4, the swing shaft 37 is arranged at the lower position of the swing block 3 at the left lower side of the lower shaft pin 231, and the connecting shaft 36 which is connected with the pull rope 4 is fixed at the left side of the swing shaft 37.
The swinging block 3 is an integral structure formed by symmetrically connecting two fan-shaped swinging pieces, the middle part between the two swinging pieces is fixed together by a swinging piece connecting column 35, and the inner cavity in the swinging block 3 is a cavity formed between the two swinging pieces. When the bed body is folded, the driving roller 34 is positioned at the right side of the swinging shaft 37, the driving roller 34 and the connecting shaft 36 are respectively positioned in the cavity of the swinging block 3, the end part of the lower connecting rod positioned in the inner cavity of the base extends into the cavity of the swinging block 3, the end part of the lower connecting rod extending into the cavity of the swinging block 3 is an arc-shaped end part 32, when the child game bed is completely unfolded and the other end of the lower connecting rod 31 moves downwards to the lowest end, the bottom end of the arc-shaped end part 32 of the lower connecting rod 31 is supported with the driving roller 34, when the child game bed is gradually folded and folded, the end surface of the arc-shaped end part 32 of the lower connecting rod 31 moves around the driving roller 34 away from the axis of the driving roller until the frame body 6 moves upwards to the highest end, and one side edge of the arc-shaped end part 32 is supported with the driving roller 34. The driving roller 34 is composed of a positioning shaft pin 33 which is penetrated and connected with the two swinging pieces and a driving wheel 341 which is rotatably sleeved on the positioning shaft pin 33 in the inner cavity of the swinging piece, and the side wall of the driving wheel 341 can be contacted with the end part 32 of the cambered surface; two ends of the connecting shaft 36 are respectively fixed on two swing pieces arranged in parallel left and right in a penetrating way, the pull rope 4 is connected with a lantern ring, and the lantern ring is sleeved on the connecting shaft 36. The bottom of the base 2 is provided with rollers 25 which facilitate the back and forth movement of the bed legs 1. The distance between two points of the upper shaft pin 221 and the upper rotating shaft pin 222 on the upper connecting rod 21 is smaller than the distance between two points of the lower shaft pin 231 and the lower rotating shaft pin 232 on the lower connecting rod 31. The bottom of the base 2 is provided with rollers 25 which facilitate the back and forth movement of the bed legs 1. The bottom of the lower cavity 23 is provided with a third cavity 24, and a roller 25 is positioned in the third cavity 24.
The folding driving device comprises a frame body 6 which can move up and down relative to the bed legs 1, a guide rod 61 which is vertically fixed in the middle of the frame body 6 and extends downwards from the middle of the bottom surface of the frame body, and a sliding seat 7 which can move up and down along the guide rod 61, wherein the other end of an upper connecting rod 21 and the other end of a lower connecting rod 31 which are movably connected with each bed leg 1 are respectively and rotatably connected with the corresponding position of the frame body 6 through an upper rotating shaft pin 222 and a lower rotating shaft pin 232, the sliding seat 7 is movably connected with the corresponding lower connecting rod 31 through a transmission rod 38, the lower end of the transmission rod 38 is rotatably connected with the corresponding side surface of the sliding seat 7 through a lower transmission shaft pin 224, and the upper end.
The frame body 6 is also provided with a locking mechanism which can keep an unfolded state after the bed body is completely unfolded, the locking mechanism comprises an unlocking pull rod 64 and a locking piece, the unlocking pull rod 64 can be arranged in the inner cavity of the guide rod 61 in a vertically movable manner, the center of the frame body 6 is provided with a vertical through hole 62 which penetrates through the frame body 6 from top to bottom, the guide rod 61 is fixedly arranged in the vertical through hole 62 of the frame body 6 in a penetrating manner, the top surface of the guide rod 61 is flush with the top surface of the frame body, the lower end of the guide rod 61 extends downwards from the bottom surface of the frame body 6, the top surface of the frame body 6 is provided with an unlocking structure of the unlocking pull rod 64, the locking piece is positioned in the inner cavity of the unlocking pull rod 64, when the folding driving device moves downwards to the lowest position and the bed body is completely unfolded, the locking piece can extend out from the corresponding side surfaces of the unlocking pull rod 64 and the guide rod 61 and is supported and locked with the bottom surface of the sliding seat 7, when the bed body needs to be folded and unlocked, the locking piece is driven by the unlocking structure to retract into the inner cavity of the unlocking pull rod 64 and separate from the sliding seat 7, the slide base 7 can be moved downward to be unlocked.
The locking piece is positioned in the lower inner cavity of the unlocking pull rod 64 and consists of at least two positioning pieces 63, the lower part of each positioning piece 63 is provided with a connecting hole for inserting a transverse shaft pin 66, the positioning piece 63 above the connecting hole is provided with an inclined strip-shaped hole 631, the positioning pieces 63 are folded together like a folding fan, the lower parts of the positioning pieces are inserted together through the connecting hole by the transverse shaft pin 66 so that the positioning pieces 63 can be unfolded and folded left and right like the folding fan, the left end and the right end of the transverse shaft pin 66 are respectively fixed on the left side and the right side corresponding to the lower part of the guide rod 61, a folding pull shaft 65 which can move up and down in the inclined strip-shaped hole 631 to unfold and fold the positioning pieces 63 is arranged in the inclined strip-shaped hole 631 in a penetrating way, the left end and the right end of the folding pull shaft 65 are fixed on the left side and the right side corresponding to the unlocking pull rod 64 in a radial direction, the unlocking pull rod 64 is provided with a notch 641 which can extend out of the side surface of the unlocking pull rod when the positioning pieces 63 are unfolded left and right, the left and right sides of the guide rod 61 corresponding to the notch 641 are also respectively provided with a through cavity 611 through which the positioning piece 63 passes and extends out of the side of the guide rod when the positioning piece 63 is unfolded, the top surface of the positioning piece 63 extending out of the through cavity 611 can be supported with the bottom surface of the sliding seat 7, the left and right sides of the unlocking pull rod 64 positioned at the upper part of the inner cavity in the middle of the unlocking pull rod are respectively provided with a vertical waist-shaped hole 642, a fixed shaft pin 68 radially penetrates through the waist-shaped hole 642, the left end of the fixed shaft pin 68 penetrates through the left side of the unlocking pull rod and is fixed with the corresponding left side of the guide rod 61, the right end of the fixed shaft pin 68 penetrates through the right side of the unlocking pull rod and is fixed with the corresponding right side of the guide rod 61, a return spring 71 is arranged in the inner cavity of the unlocking pull rod above the notch 641, the bottom of the return spring 71 is supported with the supporting part in the inner cavity of the unlocking pull rod above the notch 641, and the upper end of the return spring 71 can be supported with the fixed shaft pin 68 in a propping manner, the distance L between the upper and lower holes of the kidney-shaped hole 642 is larger than the maximum distance K when the folding pulling shaft 65 moves up and down to completely fold the positioning piece 63. The unlocking structure includes a pull ring 67, a pull rope body, and when the pull ring is selected, both ends of the pull ring are connected with a rotatable pull shaft connected to the top surface of the unlocking lever 64.
Or, the top of the frame body 6 is connected with a pulling part 671 capable of pulling the frame body 6 upwards, the unlocking structure is that the unlocking pull rod 64 extends out of the pressing extending end of the vertical through hole 62 or the pressing leveling end of the unlocking pull rod top surface leveling with the vertical through hole 62, the locking piece is positioned in the lower inner cavity of the unlocking pull rod 64 and consists of at least two positioning pieces 63, the upper part of each positioning piece 63 is provided with a connecting hole for inserting a horizontal shaft pin 66, the positioning piece 63 below the connecting hole is provided with an oblique strip-shaped hole 632, the positioning pieces 63 are folded together like a folding fan, the upper parts of the positioning pieces are inserted together through the connecting holes by the horizontal shaft pin 66 so that the positioning pieces 63 can be unfolded and folded like the folding fan, the left and right ends of the horizontal shaft pin 66 are respectively fixed on the left and right corresponding side surfaces of the upper part of the guide rod 61, the folding pull shaft 65 capable of moving upwards and downwards in the oblique strip-shaped hole 632 to unfold and fold the positioning pieces 63 is inserted in the oblique strip-shaped hole 632, the left and right ends of the folding pull shaft 65 are fixed on the left and right sides corresponding to the unlocking pull rod 64 in the radial direction, the unlocking pull rod 64 is provided with a notch 641 which can extend out of the side surface of the unlocking pull rod when the positioning sheet 63 is unfolded left and right, the left and right sides of the guide rod 61 corresponding to the notch 641 are also respectively provided with a through cavity 611 which passes through the notch 641 and extends out of the side surface of the guide rod when the positioning sheet 63 is unfolded, the buckling surface of the positioning sheet 63 extending out of the through cavity 611 can be buckled with the bottom surface of the sliding seat 7, the left and right sides of the unlocking pull rod positioned at the upper part of the middle inner cavity of the unlocking pull rod are respectively provided with a vertical waist-shaped hole 642, a transverse shaft pin 66 is radially penetrated in the waist-shaped hole 642, a return spring 71 is arranged in the inner cavity of the guide rod positioned below the through cavity 611, the upper end of the return spring 71 is in contact with the unlocking pull rod 64, and the lower end of the return spring 71 is supported with the support rod 69 positioned in the inner cavity of the guide rod, the distance L between the upper and lower holes of the waist-shaped hole 642 is greater than the maximum distance K of the positioning piece 63 after the folding pull shaft 65 moves up and down to be completely folded, the locking piece is driven to retract into the inner cavity of the unlocking pull rod 64 to be separated from the sliding seat 7 after the top of the unlocking pull rod 64 is pressed, and the pull part 671 pulled upwards can enable the sliding seat 7 to move downwards to be unlocked.
The upper enclosing rod of the children game bed is enclosed by four protecting rods 12, the protecting rods 12 comprise a left rod body 12a and a right rod body 12b which can be movably connected with the top of the corresponding bed leg 1 and a folding part which is positioned between the left rod body 12a and the right rod body 12b and can fold the left rod body 12a and the right rod body 12b, the folding part comprises a shell 8, an elastic positioning body 9 positioned in the middle of the inner cavity of the shell 8, a left rotating part positioned on the left side of the elastic positioning body 9 and a right rotating part positioned on the right side of the elastic positioning body 9, the right part of the left rod body 12a extends into the inner cavity of the left part of the shell 8 and can be rotatably connected with the shell 8, the right end of the left rod body 12a is in transmission connection with the left rotating part, the left rotating part is connected with a pull rope 4 extending from the base of the left bed leg, the left part of the right rod body 12b extends into the inner cavity of the right part of the shell and can be rotatably connected with the shell 8, the left end of the right rod body 12b is in transmission connection with the right rotating part, the stay cord 4 that comes is connected in extending in right side rotation portion and the right side footpost base, when the bed body expandes, the left side body of rod 12a expandes through the folding portion with the right side body of rod 12b, and corresponding stay cord 4 taut corresponding rotation portion simultaneously, make the corresponding supporting part of two rotation portions support mutually with the corresponding position on the elastic positioning body 9 respectively and make the folding portion locking together, when the bed body is folding, corresponding stay cord 4 relaxs, the elastic positioning body 9 promotes corresponding rotation portion antiport and makes the folding portion unblock, make the guard bar 12 fold and drive the bed body and fold.
Each rotating part comprises a rotating block 81 and a positioning block 82, the middle part of the rotating block 81 is rotatably connected in the inner cavity of the corresponding shell through a rotating block shaft pin 812, one end of the rotating block 81 is movably connected with one end of the positioning block 82, the other end of the positioning block 82 is rotatably connected with the end part of the corresponding left rod body 12a or the right rod body 12b, and a positioning convex part 821 which can be contacted with the elastic positioning body 9 is arranged on the positioning block 82.
The positioning block 82 is composed of two positioning sheet bodies with the same shape, the two positioning sheet bodies are symmetrically arranged, one end of each positioning sheet body clamps one end of the corresponding rotating block 81 therein and can be movably connected together relatively through the rotating shaft 84, the other end of each positioning sheet body clamps the end part of the corresponding left rod body 12a or the corresponding right rod body 12b therein and is mutually connected together through the sheet body shaft pin 813, and one end of the corresponding pull rope 4 bypasses the arc-shaped side wall of the corresponding rotating block 81 and is connected with the rotating shaft 84.
The elastic positioning body 9 comprises an extrusion spring 91 and an extrusion rod 92 which can be contacted with the positioning convex part 821, two spring cavities 93 for placing the corresponding extrusion springs 91 are arranged on the elastic positioning body 9, one end of the extrusion spring 91 arranged in the spring cavities 93 is contacted with the bottom surface of the corresponding spring cavity 93 respectively, the other end of the extrusion spring 91 is contacted with the corresponding extrusion rod 92 respectively, the side wall of the shell at the corresponding position with the extrusion springs 91 is provided with a limit waist-shaped through hole 83 respectively, the extrusion rod 92 is penetrated in the corresponding limit waist-shaped through hole 83, when the protection rod 12 is unfolded, the extrusion rod 92 can be supported with the positioning convex part 821 on the positioning block 82, at the moment, the connecting line of three points of the corresponding group of the sheet body shaft pin 813, the rotating shaft 84 and the rotating block shaft pin 812 is positioned on a straight line from top to bottom, when the protection rod 12 is folded, the extrusion rod 92 pushes the positioning convex part 821 to unlock the rotating shaft 84, the positioning block 82 rotates to separate the pressing rod 92 from the positioning boss 821. The side wall of the elastic positioning body 9 corresponding to the spring cavity 93 is provided with a side wall notch 94 capable of accommodating the corresponding pressing rod 92. Hook-shaped protrusions 811 capable of being engaged with the corresponding pull cord 4 are provided at intervals on the circular arc-shaped side wall of the rotating block 81. A limiting groove 814 capable of being embedded into the corresponding pull rope 4 is arranged on the circular arc-shaped side surface of the rotating block 81, and the rope body corresponding to the pull rope 4 is positioned in the limiting groove 814.
Be connected with left stay cord spring 41 on stay cord 4 of left body of rod 12a below, the one end of left stay cord spring 41 is connected with the 4 outer ends of stay cord on the left rotation piece, the other end of left stay cord spring 41 links together through the stay cord transmission mechanism in the inner chamber that the stay cord passed left footpost 1 downwards and corresponding base 2, be connected with right stay cord spring on stay cord 4 of right body of rod 12b below, the one end of right stay cord spring is connected with the 4 outer ends of stay cord on the right rotation piece, the other end of right stay cord spring links together through the stay cord transmission mechanism in the inner chamber that the stay cord passed right footpost 1 downwards and corresponding base 2. The lowest end B of the stay cord 4 connected with the folding part is lower than the position of an extending point C of the stay cord 4 extending into the inner cavity of the corresponding bed leg. The steel wire rope is obliquely arranged, so that the pull rope 4 has an upward lifting function on the folded part, the folded part in the middle of the guard bar is easier to open, and the pull rope 4 has an upward component force on the folded part, so that the lifting function is realized.
The bed leg 1 is hollow, and the pull rope 4 extends into the bed leg 1 and extends out of the opening of the side wall of the upper part of the bed leg 1 to be connected with the middle part of the guard bar 12. When the child game bed is completely unfolded, the included angle between the upper connecting rod 21 and the lower connecting rod 31 is 1.5-4 degrees. The frame body 6 is provided with an auxiliary support rod 601 which can rotate relative to the frame body 6, the auxiliary support rod 601 is L-shaped, and when the bed legs 1 are completely opened, the end part of the L-shaped auxiliary support rod 601 is pressed against the ground. The other end of the pull rope 4 passes through the inner cavity of the bed leg and penetrates out of the inner cavity of the upper part of the bed leg to be connected with the folding part. The transmission mechanism can be connected with the folding part in the middle of the guard bar 12 at the top of the folding bed through the pull rope 4, and the arc-shaped end part 32 is an oval end part.
The connecting rod movably connected with each base 2 is composed of an upper connecting rod 21 and a lower connecting rod 31 which are arranged up and down, one end of the upper connecting rod 21 extends into the upper inner cavity 22 of the base 2 and is rotatably connected with the base 2 through an upper shaft pin 221, the other end of the upper connecting rod 21 is rotatably connected with the frame body 6 in the folding driving device through an upper shaft pin 222, one end of the lower connecting rod 31 extends into the lower inner cavity 23 of the base 2 and is rotatably connected with the base 2 through a lower shaft pin 231, the end part of the lower connecting rod extending into the lower inner cavity 23 of the base 2 is linked with a transmission mechanism, the lower shaft pin 231 is positioned below the upper shaft pin 221 and is rotatably connected with the base 2, the other end of the lower connecting rod 31 is rotatably connected with the frame body 6 through a lower shaft pin 232, and the positioning point of the lower shaft pin 232 on the frame body 6 is positioned above the right oblique shaft pin of the virtual point A and is lower than the upper rotating shaft pin 222, the virtual point a is a fourth point position of a parallelogram formed by connecting three points of the upper axis pin 221, the upper axis pin 222, and the lower axis pin 231 together. An angle a between a line connecting the positioning point of the lower rotating shaft pin 232 and the virtual point a and the horizontal line is 45 °.
The working principle is as follows: when the child game bed is in a folded state, the folding driving device is pressed to move downwards, the four-bar mechanism consisting of the upper connecting bar and the lower connecting bar drives the bed legs to incline outwards gradually in the process of moving outwards, so that the top of the bed legs is unfolded quickly and the bottom of the bed legs is unfolded slowly, the arc-shaped end portion 32 of the lower connecting bar pushes the transmission roller 34 to enable the swinging block 3 to swing in the anticlockwise direction, the connecting shaft 36 is driven to move downwards in an arc shape to enable the pull rope 4 to pull downwards, the protection rod is driven to be locked, after the top is completely unfolded, the folding driving device continues to move downwards to enable the connecting bar to continue to push the bottom of the bed legs to be unfolded outwards until the bottom of the bed legs is completely unfolded to a normal use state, and when the folding driving device is pulled upwards to fold the bed body, the steps are recovered.
The whole unfolding and folding process is described in detail below with reference to the attached drawings:
the deployment process of the present invention is shown in FIG. 5 → FIG. 4 → FIG. 1.
And (3) unfolding: when the child play yard is in a folded state, the folding driving device is positioned at the highest position of the position passed by the folding driving device in the displacement process, the upper connecting rod 21 rotates upwards to the vertical position, and the left rod body and the right rod body of all the guard rods rotate downwards to enable the guard rods to be folded, as shown in fig. 5. The folding driving device is pressed downwards, the folding driving device drives the upper connecting rod 21 and the lower connecting rod 31 to rotate, when the upper connecting rod 21 and the lower connecting rod 31 rotate, the base 2 and the bed legs 1 are driven to move outwards (away from the center) and simultaneously incline outwards gradually, and the left rod body and the right rod body are synchronously driven to rotate (as shown in the position H1 in fig. 16); the upper link 21 and the lower link 31 are in a substantially parallel state with the legs 1 at the maximum tilt angle (position H2 shown in fig. 16); continuing to press the folding driving device downwards, when the upper connecting rod 21 and the lower connecting rod 31 rotate, the base 2 and the bed leg 1 are driven to move outwards and incline inwards gradually, at the moment, the bed leg 1 pulls the connecting seat 5 corresponding to the top of the bed leg 1 outwards to make the connecting seat 5 far away from each other, and the guard bar 12 is driven to be unfolded to be close to a horizontal state, as shown in fig. 4; continuing to press the folding driving device downwards, wherein the folding driving device drives the upper connecting rod 21 and the lower connecting rod 31 to rotate, the arc-shaped end part 32 of the lower connecting rod 31 pushes the transmission roller 34 to enable the swinging block 3 to swing in the anticlockwise direction, and drives the connecting shaft 36 to move downwards in an arc shape so as to enable the pull rope 4 to be pulled downwards, so that the corresponding protection rod 12 is driven to be unfolded to a horizontal use state, and a folding part is locked; the folding driving device is continuously pressed downwards until the child play bed is completely unfolded, the upper connecting rod 21 and the lower connecting rod 31 rotate to drive the base 2 and the bed legs 1 to move outwards and simultaneously gradually incline inwards to a vertical state, as shown in fig. 1, in the process, the connecting shaft 36 continuously moves downwards in an arc shape to enable the pull rope 4 to be pulled downwards, the tension spring 41 is in a stressed state, and the folding part is ensured to be in a constant force state all the time. The tension spring 41 plays a tensioning role, and if the tension spring 41 is not used, high requirements are provided for manufacturing and processing the pull rope 4, the processing precision of the length of the pull rope 4 is difficult to ensure by a general production process, and the length of the pull rope 4 between the connecting shaft 36 and the rotating shaft 84 is slightly long, so that the rotating part of the folding part cannot be pulled timely, and the folding part is not in a locking state; the length of the pull rope 4 between the connecting shaft 36 and the rotating shaft 84 is slightly short, and the transmission mechanism capable of pulling the pull rope 4 in the inner cavity of the base 2 enables the pull rope to be stressed and can exceed the maximum load force of the pull rope to break. And the elastic force of the tension spring 41 is far greater than the elastic force of the extrusion spring 91 on the elastic positioning body 9, when the transmission mechanism capable of pulling the pull rope 4 in the inner cavity of the base 2 drives the folding part to be locked, firstly, the gravity of the guard bar is overcome to expand the guard bar, meanwhile, the elastic resistance of the extrusion spring 91 is overcome, the pull rope 4 tensions the corresponding rotating part, the rotating part is driven to enable the three-point connecting line of the corresponding group of the sheet body shaft pin 813, the rotating shaft 84 and the rotating block shaft pin 812 to be positioned on a straight line from top to bottom, so that the folding part is locked, and then, the transmission mechanism continues to drive the pull rope 4 to enable the tension spring 41 to be in a tension state. The locking piece extends out from the corresponding side surface of the unlocking pull rod 64 and the guide rod 61 and is supported and locked with the bottom surface of the sliding seat 7, so that the folding bed is in a fully opened and locked state.
The folding process of the present invention is shown in FIG. 1 → FIG. 4 → FIG. 5.
Folding process: when the children game bed is in the unfolding state, as shown in figure 1; the tab 67 on the folding drive can be lifted by only one hand, unlocking the folding drive by the unlocking mechanism, to allow the folding drive to continue moving in an upward direction; the pull ring 67 is continuously lifted, the folding driving device drives the upper connecting rod 21 and the lower connecting rod 31 to rotate, and the upper connecting rod 21 and the lower connecting rod 31 drive the base 2 and the bed legs 1 to move inwards and incline outwards gradually when rotating; the end face of the arc end part 32 of the lower connecting rod 31 moves around the driving roller 34 and away from the axis of the driving roller, so that the pulling force of the pulling rope 4 is gradually lost, and the elastic positioning body 9 in the folding part pushes the corresponding rotating part to rotate, so that the folding part is unlocked, and the guard bar is folded, as shown in fig. 4; the pull ring 67 is lifted up continuously, the protection rod drives the corresponding bed leg 1 to move towards the folding driving device continuously, the left rod body and the right rod body of the protection rod 12 rotate downwards to the vertical position, and the children game bed is in the folding state, as shown in fig. 5.
The four-bar mechanism formed by skillfully designing the connecting positions of the upper connecting rod 21 and the lower connecting rod 31 ensures that when the child game bed is unfolded, the bed legs 1 can generate a motion track which inclines outwards firstly and then returns to the vertical direction, and can be divided into two unfolding processes; in the process that the bed body continues to be unfolded, the lower ends of the bed legs are gradually unfolded to catch up with the unfolding range of the upper ends of the bed legs, the bed legs are restored to be in a vertical state again, the complete unfolding of the bed body is realized, and the unfolding bed body which is not easy to fall down, suitable for children to jump and run, firm and durable is formed.
It will be apparent that the invention has the significant advantageous feature of a one-step operation in which the folding drive is pushed down or lowered to open the bed and pulled up or raised to fold the bed. Movement of the folding drive in either direction can cause movement of all other components and structures of the bed simultaneously when the bed is opened and folded.
Claims (10)
1. The utility model provides a lower folding mechanism of children's recreation bed, can fold and expand the connecting rod that the folding drive arrangement activity of the bed body is connected, its characterized in that with base (2) swing joint other end and base (2) swing joint other end with the bed bottom middle part: the lower folding mechanism also comprises a swinging block (3) which is arranged in the inner cavity of the base and can pull the pull rope (4), the swinging block (3) can be arranged in the inner cavity (23) of the lower part of the base (2) in a swinging way through a swinging shaft (37), a connecting rod which is movably connected with each base (2) consists of an upper connecting rod (21) and a lower connecting rod (31) which are arranged up and down, one end of each of the upper connecting rod (21) and the lower connecting rod (31) is respectively and rotatably connected with the corresponding position of the frame body (6) in the folding driving device, the other end of each of the upper connecting rods (21) extends into the inner cavity (22) of the upper part of the base (2) and is rotatably connected with the base (2) through an upper shaft pin (221), the other end of each of the lower connecting rods (31) extends into the inner cavity (23) of the lower part of the base (2) and is rotatably connected with the base (2) through a lower shaft pin (231), and the end of each of the lower connecting rods which extends into the inner cavity (23) of the base (2) is linked with the swinging block (3), the lower shaft pin (231) is arranged in a base inner cavity at the upper right position of the swinging block (3), the swinging block (3) is provided with a driving roller (34) which can be in contact with the end part of the lower connecting rod in a propping manner and can push the swinging block (3) to swing leftwards and a connecting shaft (36) which can be connected with the pull rope (4), the swinging shaft (37) is arranged at the lower part of the swinging block (3) at the lower left side of the lower shaft pin (231), and the connecting shaft (36) which is connected with the pull rope (4) is fixed at the left side of the swinging shaft (37).
2. The bottom folding mechanism of claim 1, wherein: the swinging block (3) is of an integral structure formed by symmetrically connecting two fan-shaped swinging pieces, the middle part between the two swinging pieces is fixed together by a swinging piece connecting column (35), and an inner cavity in the swinging block (3) is a cavity formed between the two swinging pieces.
3. The bottom folding mechanism of claim 2, wherein: the driving roller (34) and the connecting shaft (36) are respectively located in a cavity of the swinging block (3), the end portion of the lower connecting rod located in the inner cavity of the base extends into the cavity of the swinging block (3), the end portion of the lower connecting rod extending into the cavity of the swinging block (3) is an arc-shaped end portion (32), when the child game bed is completely unfolded and the other end of the lower connecting rod (31) moves downwards to the lowest end, the bottom end of the arc-shaped end portion (32) of the lower connecting rod (31) is supported with the driving roller (34), when the child game bed is gradually folded and folded, the end face of the arc-shaped end portion (32) of the lower connecting rod (31) moves away from the axis of the driving roller around the driving roller (34), and when the frame body (6) moves upwards to the highest end, one side edge of the arc-shaped end portion (32) is supported with the driving roller (34).
4. The bottom folding mechanism of claim 3, wherein: the transmission roller (34) consists of positioning shaft pins (33) which are connected to the two swinging pieces in a penetrating way and a transmission wheel (341) which is rotatably sleeved on the positioning shaft pins (33) in the inner cavity of the swinging block, and the side wall of the transmission wheel (341) can be in contact with the end part (32) of the cambered surface; two ends of the connecting shaft (36) are respectively fixed on two swing pieces which are arranged in parallel left and right in a penetrating way, the pull rope (4) is connected with a lantern ring, and the lantern ring is sleeved on the connecting shaft (36).
5. The fold-down mechanism of any of claims 1 to 4, wherein: the bottom of the base (2) is provided with rollers (25) which facilitate the bed legs (1) to move back and forth.
6. The fold-down mechanism of any of claims 1 to 4, wherein: the folding driving device comprises a frame body (6) which can move up and down relative to the bed legs (1), a guide rod (61) which is vertically fixed at the middle part of the frame body (6) and extends downwards from the middle part of the bottom surface of the frame body, and a sliding seat (7) which can move up and down along the guide rod (61), the other ends of the upper connecting rod (21) and the lower connecting rod (31) which are movably connected with each bed leg (1) are respectively connected with the corresponding positions of the frame body (6) in a rotating way through an upper rotating shaft pin (222) and a lower rotating shaft pin (232), the sliding seat (7) is movably connected with the corresponding lower connecting rod (31) through a transmission rod (38), the lower end of the transmission rod (38) is rotatably connected with the corresponding side surface of the sliding seat (7) through a lower transmission pin shaft (224), and the upper end of the transmission rod (38) is rotatably connected with the lower connecting rod (31) through an upper transmission shaft pin (223).
7. The bottom folding mechanism of claim 6, wherein: still be provided with on support body (6) and can keep the locking mechanical system who expandes the state after the bed body expandes completely, locking mechanical system is including unblock pull rod (64) and locking plate, unblock pull rod (64) can reciprocate to arrange in the inner chamber of guide bar (61), the center of support body (6) sets up vertical through-hole (62) that run through from top to bottom, guide bar (61) wear to put and are fixed in vertical through-hole (62) of support body (6), the top surface and the support body top surface looks parallel and level of guide bar (61), and the lower extreme of guide bar (61) downwardly extending from the bottom surface of support body (6) be provided with the unlocking structure of unblock pull rod (64) on the top surface of support body (6), the locking plate is arranged in the inner chamber of unblock pull rod (64), works as when folding drive arrangement moves to the lowest position and expandes the bed body completely, the locking plate can stretch out and with the sliding seat in the corresponding side of unblock pull rod (64) and guide bar (61) and stretch out (7) The bottom surface is supported and locked, when the bed body needs to be folded and unlocked, the unlocking structure drives the locking piece to retract into the inner cavity of the unlocking pull rod (64) to be separated from the sliding seat (7), so that the sliding seat (7) can move downwards to be unlocked.
8. The bottom folding mechanism of claim 7, wherein: the locking piece is positioned in the inner cavity of the lower part of the unlocking pull rod (64), the locking piece is composed of at least two positioning pieces (63), the lower part of each positioning piece (63) is provided with a connecting hole for inserting a transverse shaft pin (66), an inclined strip-shaped hole (631) is arranged on the positioning piece (63) above the connecting hole, the positioning piece (63) is folded together like a folding fan, the lower part of the positioning piece is inserted together through the connecting hole through the transverse shaft pin (66) so that the positioning piece (63) can be unfolded and folded left and right like the folding fan, the left end and the right end of the transverse shaft pin (66) are respectively fixed on the left side and the right side corresponding to the lower part of the guide rod (61), a folding pull shaft (65) capable of moving up and down in the inclined strip-shaped hole (631) to unfold and fold the positioning piece (63) is inserted in the inclined strip-shaped hole (631), and the left end and the right end of the folding pull shaft (65) are radially fixed on the left side and the right side corresponding to the unlocking pull rod (64), a notch (641) which can extend out of the side surface of the unlocking pull rod when the positioning piece (63) is unfolded left and right is arranged on the unlocking pull rod (64), a through cavity (611) which passes through the notch (641) and extends out of the side surface of the guide rod when the positioning piece (63) is unfolded is also respectively arranged on the left side surface and the right side surface of the guide rod (61) at the position corresponding to the notch (641), the top surface of the positioning piece (63) extending out of the through cavity (611) can be supported with the bottom surface of the sliding seat (7), vertical waist-shaped holes (642) are respectively arranged on the left side surface and the right side surface of the unlocking pull rod (64) positioned at the upper part of the middle inner cavity of the unlocking pull rod, a fixed shaft pin (68) is radially penetrated in the waist-shaped holes (642), the left end of the fixed shaft pin (68) penetrates through the left side surface of the unlocking pull rod and is fixed with the corresponding left side surface of the guide rod (61), the right end of the fixed shaft pin (68) penetrates through the right side surface of the unlocking pull rod and is fixed with the corresponding to the right side surface of the guide rod (61), a return spring (71) is arranged in the inner cavity of the unlocking pull rod above the notch (641), the bottom of the return spring (71) is supported by the supporting part in the inner cavity of the unlocking pull rod above the notch (641), the upper end of the return spring (71) can be supported together by being in contact with the fixed shaft pin (68), and the distance (L) between the upper hole and the lower hole of the waist-shaped hole (642) is larger than the maximum distance (K) of the positioning piece (63) after the folding pull shaft (65) moves up and down completely folds.
9. The bottom folding mechanism of claim 8, wherein: the unlocking structure comprises a pull ring (67) and a pull rope body, and when the pull ring is selected, two ends of the pull ring are connected with a pull shaft which is connected to the top surface of the unlocking pull rod (64) and can rotate.
10. The bottom folding mechanism of claim 7, wherein: the top of the frame body (6) is connected with a pulling part (671) capable of upwards pulling the frame body (6), the unlocking structure is a pressing extending end of the unlocking pull rod extending out of the vertical through hole (62) or a pressing parallel end of the unlocking pull rod top surface parallel to the top surface of the vertical through hole (62), the locking piece is positioned in the inner cavity of the lower part of the unlocking pull rod and consists of at least two positioning pieces (63), the upper part of each positioning piece (63) is provided with a connecting hole for inserting a transverse shaft pin (66), the positioning pieces (63) below the connecting holes are provided with inclined strip-shaped holes (632), the positioning pieces (63) are folded together like folding fans, the upper parts of the positioning pieces are inserted together through the connecting holes through the transverse shaft pin (66) so that the positioning pieces (63) can be unfolded and folded left and right like folding fans, the left ends and the right ends of the transverse shaft pin (66) are respectively fixed on the left and right corresponding side surfaces of the upper, a folding pull shaft (65) which can move up and down in the inclined strip-shaped hole (632) to unfold and fold the positioning sheet (63) is arranged in the inclined strip-shaped hole (632) in a penetrating way, the left end and the right end of the folding pull shaft (65) are fixed on the left side surface and the right side surface corresponding to the unlocking pull rod (64) in a radial direction, a notch (641) which can extend out of the side surface of the unlocking pull rod when the positioning sheet (63) is unfolded left and right is arranged on the unlocking pull rod (64), a through cavity (611) which passes through the notch (641) and extends out of the side surface of the guiding rod when the positioning sheet (63) is unfolded left and right is also respectively arranged on the left side surface and the right side surface of the guiding rod (61) corresponding to the notch (641), a buckling surface of the positioning sheet (63) extending out of the through cavity (611) can be buckled with the bottom surface of the sliding seat (7), vertical waist-shaped holes (642) are respectively arranged on the left side surface and the unlocking pull rod positioned on the upper part of the middle inner cavity of the unlocking pull rod, and the transverse shaft pin (66) are radially arranged in the waist-shaped hole (642), a return spring (71) is arranged in an inner cavity of the guide rod below the through cavity (611), the upper end of the return spring (71) is in contact with the unlocking pull rod (64) in a propping mode, the lower end of the return spring (71) is supported by a support rod (69) in the inner cavity of the guide rod, the distance (L) between the upper hole and the lower hole of the waist-shaped hole (642) is larger than the maximum distance (K) of the folding pull shaft (65) after moving up and down to enable the positioning sheet (63) to be folded completely, the top of the unlocking pull rod (64) is pressed to drive the locking sheet to retract into the inner cavity of the unlocking pull rod (64) to be separated from the sliding seat (7), and the pull part (671) pulled upwards can enable the sliding seat (7) to move downwards to be unlocked.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010240026.9A CN111419038B (en) | 2020-03-31 | 2020-03-31 | Lower folding mechanism of children game bed |
| PCT/CN2021/073967 WO2021196844A1 (en) | 2020-03-31 | 2021-01-27 | Lower folding mechanism of child game bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010240026.9A CN111419038B (en) | 2020-03-31 | 2020-03-31 | Lower folding mechanism of children game bed |
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| Publication Number | Publication Date |
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| CN111419038A CN111419038A (en) | 2020-07-17 |
| CN111419038B true CN111419038B (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010240026.9A Active CN111419038B (en) | 2020-03-31 | 2020-03-31 | Lower folding mechanism of children game bed |
Country Status (2)
| Country | Link |
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| CN (1) | CN111419038B (en) |
| WO (1) | WO2021196844A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220296007A1 (en) * | 2020-03-31 | 2022-09-22 | Anhui Coolbaby Science & Technology Development Corporation | Portable child game bed |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111214041B (en) * | 2020-03-31 | 2021-12-21 | 安徽酷豆丁科技发展股份有限公司 | Lower folding control mechanism of children folding bed |
| CN111419038B (en) * | 2020-03-31 | 2021-08-31 | 安徽酷豆丁科技发展股份有限公司 | Lower folding mechanism of children game bed |
| CN113974640B (en) * | 2021-10-29 | 2023-07-28 | 杨红艳 | Electrocardiogram examination automatic calibration positioning device and method |
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| Publication number | Publication date |
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| CN111419038A (en) | 2020-07-17 |
| WO2021196844A1 (en) | 2021-10-07 |
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Denomination of invention: Lower folding mechanism of children's game bed Effective date of registration: 20230309 Granted publication date: 20210831 Pledgee: Lu'an Jin'an financing Company limited by guarantee Pledgor: ANHUI COOLBABY SCIENCE & TECHNOLOGY DEVELOPMENT Corp. Registration number: Y2023980034488 |
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