Infant bed lifting armrest structure capable of preventing mistaken pressing and infant bed

Abstract

A baby crib lifting armrest structure capable of preventing mistaken pressing comprises a joint assembly, the joint assembly comprises a first joint upper pipe, a rotating arm, a sliding piece and a sliding rail, one end of the first joint upper pipe is connected with the rotating arm, and a push-pull piece capable of moving left and right is arranged in the rotating arm; the end, away from the first joint upper pipe, of the push-pull piece is connected with a locking pin, a push-button capable of being pushed and pressed is arranged on one side of the rotating arm, the push-button abuts against the rotating arm in the non-pushing state and cannot be pressed, and after being pushed, the push-pull piece and the locking pin can be pressed to drive the push-pull piece and the locking pin to move. The sliding piece is in vertical sliding fit with the sliding rail, a locking hole is formed in the top of the sliding rail, the end, close to the locking hole, of the locking pin penetrates through the sliding piece and can be inserted into the locking hole, and when the locking pin is inserted into the locking hole, the rotating arm can rotate relative to the locking pin. According to the baby crib, the situation that the lifting grab rail structure descends directly due to the fact that a child presses a button by mistake can be avoided, and the safety of the child in the baby crib is improved.

Description

Technical Field

[0001] This invention relates to the field of children's furniture, specifically to a crib lift armrest structure and a crib designed to prevent accidental pressing. Background Technology

[0002] A crib is one of the pieces of furniture that babies use for the longest time in the first few years after birth. It is not just a place to sleep, but also a private space that needs to be absolutely safe, comfortable, and conducive to development. Currently, patent CN220675639U discloses a new type of adjustable side rail crib, including a base, uprights, a railing, and a side rail. The uprights are installed on the base, and the railing is installed on the upper part of the uprights. The railing includes four corner seats and armrests. The side rail includes two lifting mechanisms. Adjacent corner seats are connected by armrests, and adjacent lifting mechanisms are connected by armrests. The lifting mechanism includes a slide rail and a sliding sleeve. The slide rail is installed on adjacent uprights and has a groove that extends upward to the corner seat. The corner seat has a positioning hole. The sliding sleeve includes a slide base, a button, a slider, a spring, a pin, and a sliding plate. The sliding plate on the slide base is set in the groove. One end of the pin is installed on the slider. The spring pushes the slider to move the pin into or out of the positioning hole. The button and the slider are inclined and abut against each other. Pressing the button can move the pin. Pressing the button causes the pin to disengage from the positioning hole, allowing the sliding sleeve to move downwards along the slide groove, enabling the side rail to be raised and lowered for easy carrying of infants and children.

[0003] In the aforementioned patent, when the side rail needs to be lowered, pressing the button causes the pin to disengage from the positioning hole, allowing the sliding sleeve to move downwards along the groove, thus enabling the side rail to be adjusted in and out, facilitating the carrying of infants and children. However, while the side rail only requires one press to disengage the pin from the positioning hole when unlocking, if a toddler is holding onto the side rail while inside the crib, accidentally pressing the button could trigger the side rail to descend, posing a risk of the toddler falling out of the crib. Summary of the Invention

[0004] The present invention provides a baby crib lifting armrest structure and baby crib to prevent accidental pressing. Its main purpose is to overcome the problem that the button of the existing baby crib side rail is accidentally pressed by the child when it is lowered by a single button.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A crib lifting armrest structure to prevent accidental pressing includes a joint assembly. The joint assembly includes a first joint upper tube, a rotating arm, a sliding member, and a slide rail. One end of the first joint upper tube is connected to the rotating arm. The rotating arm has a push-pull member that can move left and right. The end of the push-pull member away from the first joint upper tube is connected to a locking pin. One side of the rotating arm has a pushable and pressable button. The button cannot be pressed when it is not pushed, as it is in contact with the rotating arm. When the button is pushed, it can be pressed and drives the push-pull member and the locking pin to move. The sliding member slides up and down with the slide rail. The top of the slide rail has a locking hole. The end of the locking pin near the locking hole passes through the sliding member and can be inserted into the locking hole. When the locking pin is inserted into the locking hole, the rotating arm can rotate relative to the locking pin.

[0006] Furthermore, the rotating arm is provided with a button hole, and the button includes a button cover, a button component, and a button limiting component. The button cover is provided with a movable groove, and a first connecting block is provided in the movable groove. The button component is provided with a second connecting block at one end near the button cover. The second connecting block is located in the movable groove, and the length of the movable groove is greater than the length of the second connecting block. The first connecting block and the second connecting block are arranged left and right and connected by a first screw. A first spring is provided between the first connecting block and the second connecting block. The first screw passes through the first spring. When the first spring is extended, the button cover abuts against the rotating arm. The button limiting component is provided with a button mounting cavity at one end near the button cover. The button mounting cavity is located in the button hole, and the button component is located in the button mounting cavity. The button component is provided with a driving part at one end away from the button cover. The driving part passes through the button limiting component and abuts against the push-pull component, and can drive the push-pull component to move. The button limiting component is located in the rotating arm, and the button component and the button limiting component are connected by a second screw.

[0007] Furthermore, the push-pull component is provided with a movable opening and a first transverse groove, the drive part is provided with a first inclined surface, an inner side of the movable opening is provided with a second inclined surface that fits against the first inclined surface, a second spring is provided in the first transverse groove, a first rivet is provided through the rotating arm, the first rivet passes through one end of the first transverse groove, and one end of the second spring abuts against the first rivet.

[0008] Furthermore, one end of the button hole is provided with a cutout to provide pushing space for the button cover, and the other end of the button hole is provided with an abutment to limit the pushing distance of the button cover.

[0009] Furthermore, the rotating arm extends through the left and right sides, and a hinge interface is provided at the end of the rotating arm near the locking pin. The end of the locking pin away from the locking hole is hinged in the hinge interface. When the push-pull member drives the locking pin to disengage from the locking hole, the end of the locking pin away from the locking hole enters the rotating arm and restricts the rotation of the rotating arm.

[0010] Furthermore, the end of the push-pull member near the locking pin is located within the hinge interface and is provided with a second transverse groove and a placement groove. The end of the locking pin away from the locking hole is provided with a third transverse groove. The end of the locking pin away from the locking hole is located within the placement groove. The end of the rotating arm near the locking pin is provided with a second rivet that passes through the second transverse groove and the third transverse groove.

[0011] The crib lifting armrest structure also includes a first hinge member. The joint assembly is provided in two sets, and the two sets of joint assemblies are symmetrical from left to right. The other end of the upper tube of the first joint is hinged to the first hinge member.

[0012] Furthermore, the joint assembly also includes a first lower joint tube, one end of which is hinged to a sliding member, and the other end of which is hinged to a first hinge member.

[0013] Furthermore, the first hinge member is provided with two sets of guide inclined grooves, two sets of guide horizontal grooves, and one set of guide vertical grooves. The two sets of guide inclined grooves are symmetrical from left to right, and the two sets of guide horizontal grooves are symmetrical from left to right. Each set of guide inclined grooves and each set of guide horizontal grooves corresponds to one first joint upper tube. Each set of guide inclined grooves is composed of two guide inclined grooves arranged front to back, each set of guide horizontal grooves is composed of two guide horizontal grooves arranged front to back, and each set of guide vertical grooves is composed of two guide vertical grooves arranged front to back. A third rivet passes through each set of guide inclined grooves, and a fourth rivet passes through each set of guide horizontal grooves. The third and fourth rivets pass through the first joint upper tube. The first hinge member is provided with two first linkage pieces arranged front to back, each first linkage piece corresponding to one first joint lower tube. A fifth rivet passes through one set of guide vertical grooves. The fifth rivet passes through the top ends of the two first linkage pieces, and the bottom ends of the first linkage pieces are hinged to the other end of the first joint lower tube.

[0014] A crib employs an anti-accidental pressing crib lifting armrest structure, comprising four support members, four uprights, four corner pieces, three sets of folding armrest structures, the crib lifting armrest structure, and a folding base. The four uprights are distributed at the four corners, each upright corresponding to one support member and one corner piece. The support members are connected to the bottom of the uprights, and the corner pieces are connected to the top of the uprights. The crib lifting armrest structure and the three sets of folding armrest structures are distributed on the four sides. The crib lifting armrest structure is connected between two corresponding corner pieces, and the three sets of folding armrest structures are hinged between two corresponding corner pieces. A base tube is hinged between each support member and the folding base. The slide rail is connected to the uprights, and the top of the slide rail and the sliding member are located inside the corner piece.

[0015] Furthermore, the folding base includes an upper chassis component, a lower chassis component, a sleeve, a chassis handle, and feet. The upper chassis component has a sleeve hole, the upper part of the sleeve is connected to the sleeve hole, the chassis handle is located inside the sleeve and can be pulled inside the sleeve, the top of the chassis handle extends out of the top of the sleeve and is located outside the upper chassis component, the lower chassis component is located below the upper chassis component and is sleeved on the outer periphery of the sleeve, a second linkage plate is hinged between the chassis tube and the lower chassis component, the feet are connected to the bottom of the sleeve, the feet have two sets of locking plates arranged in an "X" shape, the lower part of the sleeve has two slots for the upper parts of the two sets of locking plates to be engaged, when the chassis handle is lifted, it causes the two sets of locking plates to retract, when the chassis handle is released, the two sets of locking plates automatically return to their original positions, and the upper chassis component is hinged with two symmetrical support rods.

[0016] Furthermore, the upper part of the chassis handle is open to the left and right, and the lower part of the chassis handle is provided with a spring placement groove. One side of the spring placement groove has an opening, and a third spring is provided in the spring placement groove. One side of the chassis handle has a first strip groove, and the other side of the chassis handle has a second strip groove. The second strip groove is located above the opening and communicates with the opening. Both opposite sides of the chassis handle are connected to driving plates, and each driving plate has a third strip groove. A sixth rivet passes through the chassis upper part. The sixth rivet passes through the sleeve, the first strip groove, the second strip groove, and the third strip groove. The top of the third spring abuts against the sixth rivet. The top of the foot piece has a mounting opening. The bottom of the two sets of locking plates is hinged in the mounting opening. Both sets of locking plates have a fourth strip groove. A first pin passes between the bottoms of the two driving plates. The first pin passes through the fourth strip groove of the two sets of locking plates.

[0017] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages: When the lifting armrest structure of the crib needs to be lowered, the button must be pushed first and then pressed. Only then can the button drive the push-pull component and the locking pin to move, so that the locking pin disengages from the locking hole. At this time, the upper tube of the first joint, the rotating arm, and the sliding component can descend along the slide rail. When the lifting armrest structure of the present invention needs to be lowered, the button must be pushed first and then pressed to unlock, thus forming a double-lock structure. This avoids the lifting armrest structure from being lowered directly due to the child accidentally pressing the button, greatly improving the safety of the child in the crib. In addition, when the lifting armrest structure of the crib is applied to a folding crib, with the locking pin inserted into the locking hole, the rotating arm can rotate relative to the locking pin, thus not affecting the folding of the lifting armrest structure of the crib. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the joint assembly of the present invention.

[0019] Figure 2 This is an exploded view of the joint assembly of the present invention.

[0020] Figure 3 This is an exploded view of the joint assembly of the present invention from another angle.

[0021] Figure 4 This is an exploded view of the joint assembly of the present invention from another angle, where the slider and slide rail are not shown.

[0022] Figure 5 This is a structural diagram of the baby crib lifting armrest structure of the present invention.

[0023] Figure 6 This is an exploded view of the lifting armrest structure of the baby crib of the present invention.

[0024] Figure 7 This is a structural diagram of the baby bed of the present invention.

[0025] Figure 8 This is a structural diagram of the folding armrest structure of the baby crib of the present invention.

[0026] Figure 9 This is an exploded view of the folding armrest structure of the baby crib of the present invention.

[0027] Figure 10 This is a structural diagram of the folding base of the baby crib of the present invention.

[0028] Figure 11 This is an exploded view of the structure of the folding base of the baby crib of the present invention.

[0029] Figure 12 This is an exploded view of the sleeve, chassis handle, and base of the folding base of the baby bed of the present invention.

[0030] Figure 13 This is a diagram showing the folded state of the baby crib of the present invention. Detailed Implementation

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] Reference Figure 1 and Figure 2 A crib lifting armrest structure to prevent accidental pressing includes a joint assembly 1, which includes a first joint upper tube 11, a rotating arm 12, a slider 13, and a slide rail 14. One end of the first joint upper tube 11 is connected to the rotating arm 12. The rotating arm 12 has a push-pull member 15 that can move left and right. The end of the push-pull member 15 away from the first joint upper tube 11 is connected to a locking pin 16. One side of the rotating arm 12 has a pushable and pressable button 17. The button 17 cannot be pressed when it is not pushed, but can be pressed when pushed, which moves the push-pull member 15 and the locking pin 16. The slider 13 slides up and down with the slide rail 14. The top of the slide rail 14 has a locking hole 141. The end of the locking pin 16 near the locking hole 141 passes through the slider 13 and can be inserted into the locking hole 141. When the locking pin 16 is inserted into the locking hole 141, the rotating arm 12 can rotate relative to the locking pin 16.

[0035] Reference Figures 1 to 3The rotating arm 12 is provided with a button hole 121. The button 17 includes a button cover 171, a button component 172 and a button limiting component 173. The button cover 171 is provided with a movable groove 1711, and a first connecting block 1712 is provided in the movable groove 1711. The button 172 is provided with a second connecting block 1721 at one end near the button cover 171. The second connecting block 1721 is located in the movable groove 1711. The length of the movable groove 1711 is greater than the length of the second connecting block 1721, so that the button cover 171 has room for movement. The first connecting block 1712 and the second connecting block 1721 are arranged left and right and connected by a first screw 174. After the first screw 174 passes through the first connecting block 1712, it is only threadedly connected to the second connecting block 1721. The first connecting block 1712 can move relative to the second connecting block 1721. A first spring 175 is provided between the first connecting block 1712 and the second connecting block 1721. The first screw 174 passes through the first spring 175. When the first spring 175 is extended, the button cover 171 abuts against the rotating arm 12. The button limiting member 173 has a button mounting cavity 1731 at one end near the button cover 171. The button mounting cavity 1731 is located inside the button hole 121. The button member 172 is located inside the button mounting cavity 1731. The button member 172 has a driving part 1722 at one end away from the button cover 171. The driving part 1722 passes through the button limiting member 173 and abuts against the push-pull member 15 and can drive the push-pull member 15 to move. The button limiting member 173 is located inside the rotating arm 12. The button member 172 and the button limiting member 173 are connected by a second screw 176.

[0036] Reference Figures 1 to 3 The push-pull member 15 is provided with a movable opening 151 and a first transverse groove 152. The drive part 1722 is provided with a first inclined surface 1723. An inner side of the movable opening 151 is provided with a second inclined surface 153 that fits against the first inclined surface 1723. A second spring 154 is provided in the first transverse groove 152. A first rivet 122 passes through the rotating arm 12. The first rivet 122 passes through one end of the first transverse groove 152. One end of the second spring 154 abuts against the first rivet 122.

[0037] Reference Figure 2 One end of the button hole 121 is provided with a cutout 123 to provide pushing space for the button cover 171, and the other end of the button hole 121 is provided with an abutment part 124 to limit the pushing distance of the button cover 171.

[0038] Reference Figure 2 and Figure 4The rotating arm 12 extends through the left and right sides. The end of the rotating arm 12 near the locking pin 16 is provided with a hinge interface 125. The end of the locking pin 16 away from the locking hole 141 is hinged in the hinge interface 125. When the push-pull member 15 drives the locking pin 16 to disengage from the locking hole 141, the end of the locking pin 16 away from the locking hole 141 enters the rotating arm 12 and restricts the rotation of the rotating arm 12.

[0039] Reference Figures 1 to 3 The push-pull member 15, with one end near the locking pin 16 located within the hinge interface 125, is provided with a second transverse groove 155 and a placement groove 156. The locking pin 16, with one end away from the locking hole 141, is provided with a third transverse groove 161, and the other end of the locking pin 16 away from the locking hole 141 is located within the placement groove 156. The rotating arm 12, with one end near the locking pin 16, is provided with a second rivet 126 passing through the second transverse groove 155 and the third transverse groove 161. The placement groove 156 provides placement space for the end of the locking pin 16 away from the locking hole 141, so that the push-pull member 15 can move the locking pin 16 along with it when it moves. The first transverse groove 152 and the second transverse groove 155 provide movement space for the push-pull member 15 when it moves. The movable opening 151 provides movement space for the drive part 1722, and the third transverse groove 161 provides movement space for the locking pin 16 when it moves.

[0040] Reference Figures 1 to 4 When the locking pin 16 is inserted into the locking hole 141, the first spring 175 is in an extended state. Under the elastic force of the first spring 175, the button cover 171 abuts against the notch 123. At this time, the button cover 171 cannot be pressed, and therefore the button 172 cannot be pressed. When the locking pin 16 needs to be unlocked, the button cover 171 is pushed towards the locking pin 16 so that the button cover 171 does not abut against the notch 123. At this time, the button cover 171 can be pressed. When the button cover 171 is pressed, the button 172 is also pressed. With the cooperation of the first inclined surface 1723 of the drive part 1722 and the second inclined surface 153 of the push-pull member 15, when the button 172 is pressed, the push-pull member 15 and the locking pin 16 will move away from the locking hole 141, so that the locking pin 16 disengages from the locking hole 141 and is unlocked. At this time, the first joint upper tube 11, the rotating arm 12, and the sliding member 13 can descend along the slide rail 14. When the locking pin 16 is inserted into the locking hole 141, the end of the locking pin 16 away from the locking hole 141 is only located in the hinge interface 125. At this time, the rotating arm 12 can rotate relative to the locking pin 16. When the button 172 is pressed, it drives the push-pull member 15 and the locking pin 16 to move away from the locking hole 141. The end of the locking pin 16 away from the locking hole 141 enters the rotating arm 12. At this time, the rotating arm 12 will be restricted by the end of the locking pin 16 away from the locking hole 141 and cannot rotate relative to the locking pin 16.

[0041] Reference Figure 5 The crib's adjustable armrest structure also includes a first hinge member 2. The joint assembly 1 has two sets, symmetrically arranged. The other end of the first upper joint tube 11 is hinged to the first hinge member 2. The joint assembly 1 also includes a first lower joint tube 18, one end of which is hinged to a sliding member 13, and the other end of which is hinged to the first hinge member 2. The dual-tube design of the first upper joint tube 11 and the first lower joint tube 18 enhances the stability of the crib's adjustable armrest structure.

[0042] Reference Figure 5 and Figure 6 The first hinge member 2 is provided with two sets of guide inclined grooves 21, two sets of guide horizontal grooves 22, and one set of guide vertical grooves 23. The two sets of guide inclined grooves 21 are symmetrical from left to right, and the two sets of guide horizontal grooves 22 are symmetrical from left to right. Each set of guide inclined grooves 21 and each set of guide horizontal grooves 22 corresponds to one first joint upper tube 11. Each set of guide inclined grooves 21 is composed of two guide inclined grooves 21 arranged front to back, each set of guide horizontal grooves 22 is composed of two guide horizontal grooves 22 arranged front to back, and each set of guide vertical grooves 23 is composed of two guide vertical grooves 23 arranged front to back. Two adjacent guide inclined grooves 21 are arranged in a figure-eight shape, and the top of each guide inclined groove 21 has a retaining groove 24. Each set of guide grooves 21 is provided with a third rivet 25, and each set of guide horizontal grooves 22 is provided with a fourth rivet 26. The third rivet 25 and the fourth rivet 26 pass through the upper tube 11 of the first joint. The first hinge member 2 is provided with two first linkage pieces 27 arranged front and rear. Each first linkage piece 27 corresponds to a lower tube 18 of the first joint. A set of guide vertical grooves 23 is provided with a fifth rivet 28. The fifth rivet 28 passes through the top ends of the two first linkage pieces 27. The bottom end of the first linkage piece 27 is hinged to the other end of the lower tube 18 of the first joint.

[0043] Reference Figure 5 and Figure 6When the upper tube 11 and lower tube 18 of the first joint are in the unfolded state, the third rivet 25 is engaged in the slot 24, the fourth rivet 26 is located at one end of the guide horizontal groove 22 near the guide inclined groove 21, and the fifth rivet 28 is located at the top of the guide vertical groove 23. When the ends of the upper tube 11 and lower tube 18 of the first joint away from the first hinge 2 are subjected to an outward pulling force, the third rivet 25 disengages from the slot 24, and the upper tube 11 and lower tube 18 of the first joint can then be folded. When the upper tube 11 of the first joint is folded, the third rivet 25 slides down along the guide inclined groove 21, while the fourth rivet 26 moves away from the guide inclined groove 21 along the guide horizontal groove 22, and the fifth rivet 28 moves down along the guide vertical groove 23. The cooperation between the fourth rivet 26 and the guide groove 22 can provide an additional fulcrum for the folding of the first joint upper tube 11, so that the rotating end of the first joint upper tube 11 will not wobble when folding. The two first linkage pieces 27 can move with the two first joint lower tubes 18 respectively. At the same time, the fifth rivet 28 moves downward along the guide vertical groove 23, so that the two first joint lower tubes 18 fold synchronously. Since the first joint upper tube 11 and the first joint lower tube 18 on the same side are connected to the same sliding member 13, the two first joint lower tubes 18 drive the two first joint upper tubes 11 to fold synchronously when folding synchronously, so that the folding of the first joint upper tube 11 and the first joint lower tube 18 is smoother.

[0044] Reference Figure 7 This invention also discloses a crib employing the aforementioned anti-accidental pressing crib lifting armrest structure, comprising four support members 3, four uprights 4, four corner pieces 5, three sets of folding armrest structures 6, the crib lifting armrest structure, and a folding base 7. The four uprights 4 are distributed at the four corners, each upright corresponding to one support member 3 and one corner piece 5. The support member 3 is connected to the bottom of the upright 4, and the corner piece 5 is connected to the top of the upright 4. The crib lifting armrest structure and the three sets of folding armrest structures 6 are distributed along the four sides. The crib lifting armrest structure is connected between two corresponding corner pieces 5, and the three sets of folding armrest structures 6 are hinged between two corresponding corner pieces 5. A base tube 8 is hinged between each support member 3 and the folding base 7. The slide rail 14 is connected to the upright 4. The bottom of the support member 3 is provided with rollers 31 for easy movement of the crib.

[0045] Reference Figure 1 , Figure 2 , Figure 5 and Figure 7The tops of the sliding member 13 and the slide rail 14 are located within the corner member 5. This ensures that the corner member 5, which connects to the crib's lifting armrest structure, maintains its integrity and structural consistency with other corner members 5. In contrast, in the prior art, the two corner members connected to the side rail are divided into two parts. This not only makes it impossible for all corner members of the crib to maintain consistency, disrupting the uniformity of their appearance, but also requires the use of different molds to produce different corner members, increasing the company's production costs.

[0046] Reference Figures 5 to 9 It should be noted that the three sets of folding armrest structures 6 have the same structure, each including a second hinge 61, two symmetrical upper second joint tubes 62, and two symmetrical lower second joint tubes 63. One end of the upper second joint tube 62 and one end of the lower second joint tube 63 are hinged to the corner piece 5, and the other end of the upper second joint tube 62 and the other end of the lower second joint tube 63 are hinged to the second hinge 61. The second hinge 61 has the same structure as the first hinge 2, the upper second joint tube 62 has the same structure as the upper first joint tube 11, and the lower second joint tube 63 has the same structure as the lower first joint tube 18. The connection method between the upper second joint tube 62, the lower second joint tube 63 and the second hinge 61 is exactly the same as the connection method between the upper first joint tube 11, the lower first joint tube 18 and the first hinge 2, and will not be described again here.

[0047] Reference Figure 7 , Figures 10 to 12 The folding base 7 includes an upper chassis component 71, a lower chassis component 72, a sleeve 73, a chassis handle 74, and base components 75. The upper chassis component 71 has a sleeve hole 711, the upper part of the sleeve 73 is connected to the sleeve hole 711, the chassis handle 74 is sleeved in the sleeve 73 and can be pulled in the sleeve 73, and the top of the chassis handle 74 extends out of the top of the sleeve 73 and is located outside the upper chassis component 71. The lower chassis component 72 is located below the upper chassis component 71 and is sleeved on the outer periphery of the sleeve 73. A second linkage plate 76 is hinged between the chassis tube 8 and the lower chassis component 72. The foot component 75 is connected to the bottom of the sleeve 73. The foot component 75 is provided with two sets of locking plates 77 arranged in an "X" shape. The lower part of the sleeve 73 is provided with two slots 731 for the upper parts of the two sets of locking plates 77 to be engaged. When the chassis handle 74 is lifted, it causes the two sets of locking plates 77 to retract. When the chassis handle 74 is released, the two sets of locking plates 77 automatically return to their original positions. The upper chassis component 71 is hinged with two symmetrical support rods 78, which provide support for the folding base 7.

[0048] Reference Figures 10 to 12The upper part of the chassis handle 74 extends through the left and right sides. The lower part of the chassis handle 74 is provided with a spring placement groove 741. One side of the spring placement groove 741 is provided with an opening 742. A third spring 743 is provided in the spring placement groove 741. The opening 742 facilitates the installation of the third spring 743 into the spring placement groove 741. One side of the chassis handle 74 is provided with a first strip groove 744. The other side of the chassis handle 74 is provided with a second strip groove 745. The second strip groove 745 is located above the opening 742 and communicates with the opening 742. The chassis handle 74 has drive plates 746 connected to its two opposite sides. The two drive plates 746 are connected to the chassis handle 74 by second pins 747. Each drive plate 746 is provided with a third slot 7461. The chassis upper part 71 is provided with a sixth rivet 748. The sixth rivet 748 passes through the sleeve 73, the first slot 744, the second slot 745 and the third slot 7461. The top of the third spring 743 abuts against the sixth rivet 748. The first slot 744, the second slot 745 and the third slot 7461 provide movement space for the chassis handle 74. When the chassis handle 74 is lifted, the sixth rivet 748 does not move, so the third spring 743 will be compressed. The top of the base member 75 is provided with a mounting port 751. The bottom of the two sets of locking pieces 77 is hinged to the mounting port 751 by two third pins 732. The two third pins 732 pass through the bottom of the sleeve 73. Both sets of locking pieces 77 are provided with a fourth slot 771. A first pin 7462 passes through the bottom of the two driving pieces 746. The first pin 7462 passes through the fourth slot 771 of the two sets of locking pieces 77.

[0049] Reference Figure 7 , Figures 10 to 13When the folding base 7 is locked, the top surface of the lower chassis 72 abuts against the bottom surface of the upper chassis 71. The upper parts of the two sets of locking pieces 77 engage with the two corresponding slots 731 and extend out of the corresponding slots 731. At this time, the two sets of locking pieces 77 can abut and position the bottom of the lower chassis 72. Even if the play bed is moved, the lower chassis 72 will be held in place by the two sets of locking pieces 77 and cannot be lowered. When the chassis handle 74 is not lifted, the two sets of locking pieces 77 will remain engaged in the corresponding slots 731. By positioning the folding base 7 in the locked state through the two sets of locking pieces 77, even when the folding base 7 is locked again, the two sets of locking pieces 77 can still accurately engage in the corresponding slots 731, and there will be no situation where the two sets of locking pieces 77 fail, ensuring that the folding base 7 can be well positioned after unfolding. To unlock the folding base 7, lift the chassis handle 74 upwards. The chassis handle 74 drives two sets of locking plates 77 to retract into the sleeve 73 via two drive plates 746. As the chassis handle 74 continues to lift, the upper chassis component 71, sleeve 73, and base component 75 will rise with the chassis handle 74. The four chassis tubes 8 and two support rods 78 will fold. After the folding base 7 is unlocked, release the chassis handle 74. At this time, the chassis handle 74 will automatically descend by the height of the first strip groove 744. The upper parts of the two sets of locking plates 77 will re-engage in the corresponding slots 731. The lower chassis component 72 is located below the two sets of locking plates 77. When the folding base 7 needs to be locked again, press down on the upper chassis 71. The chassis handle 74, sleeve 73 and foot piece 75 will descend. The upper parts of the two sets of locking pieces 77 will automatically retract under the pressure of the lower chassis 72. When the lower chassis 72 is above the bayonet 731, the upper parts of the two sets of locking pieces 77 will automatically engage in the corresponding bayonet 731. At this time, the four chassis tubes 8 and the two support rods 78 will also fully unfold. After unfolding, the bottom of the two support rods 78 will contact the ground.

[0050] Reference Figure 2 , Figures 4 to 13When the folding base 7 is unlocked, as the chassis handle 74 is lifted, the four chassis tubes 8 fold upwards. During the upward folding of the four chassis tubes 8, the bottoms of the four uprights 4 move inwards and the tops expand outwards. The outward expansion of the tops of the four uprights 4 pulls the first joint upper tube 11 and the first joint lower tube 18 of the crib lifting armrest structure, and the second joint upper tube 62 and the second joint lower tube 63 of the three sets of folding armrest structures 6, so that the first joint upper tube 11 and the first joint lower tube 18 of the crib lifting armrest structure, and the second joint upper tube 62 and the second joint lower tube 63 of the three sets of folding armrest structures 6 are folded, thereby completing the folding of the crib. When the crib needs to be unfolded, pressure is applied downward to the upper chassis 71. The four chassis tubes 8 can unfold downward as the upper chassis 71 descends. The four uprights 4 can unfold outward as the four chassis tubes 8 unfold downward. The first joint upper tube 11 and the first joint lower tube 18 of the crib lifting armrest structure, and the second joint upper tube 62 and the second joint lower tube 63 of the three sets of folding armrest structures 6 unfold upward as the four uprights 4 unfold outward.

[0051] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A crib lifting armrest structure to prevent accidental pressing, characterized in that: The device includes a joint assembly comprising a first joint upper tube, a rotating arm, a sliding member, and a slide rail. One end of the first joint upper tube is connected to the rotating arm. The rotating arm contains a push-pull member that can move left and right. The end of the push-pull member away from the first joint upper tube is connected to a locking pin. One side of the rotating arm has a pushable and pressable button. The button is not pressable as it is in contact with the rotating arm when not pushed. When the button is pushed, it can be pressed and drives the push-pull member and the locking pin to move. The sliding member slides up and down with the slide rail. The top of the slide rail has a locking hole. The end of the locking pin near the locking hole passes through the sliding member and can be inserted into the locking hole. When the locking pin is inserted into the locking hole, the rotating arm can rotate relative to the locking pin.

2. The anti-accidental pressing baby crib lifting armrest structure as described in claim 1, characterized in that: The rotating arm has a button hole. The button includes a button cover, a button component, and a button limiting component. The button cover has a movable groove, and a first connecting block is provided in the movable groove. A second connecting block is provided at the end of the button component near the button cover. The second connecting block is located in the movable groove, and the length of the movable groove is greater than the length of the second connecting block. The first and second connecting blocks are arranged left and right and connected by a first screw. A first spring is provided between the first and second connecting blocks. The first screw passes through the first spring. When the first spring is extended, the button cover abuts against the rotating arm. The button limiting component has a button mounting cavity at the end near the button cover. The button mounting cavity is located in the button hole, and the button component is located in the button mounting cavity. A driving part is provided at the end of the button component away from the button cover. The driving part passes through the button limiting component and abuts against the push-pull component, which can drive the push-pull component to move. The button limiting component is located in the rotating arm, and the button component and the button limiting component are connected by a second screw.

3. The anti-accidental pressing baby crib lifting armrest structure as described in claim 2, characterized in that: The push-pull component has a movable opening and a first horizontal groove. The drive part has a first inclined surface. One inner side of the movable opening has a second inclined surface that fits against the first inclined surface. A second spring is provided in the first horizontal groove. A first rivet passes through the rotating arm. The first rivet passes through one end of the first horizontal groove. One end of the second spring abuts against the first rivet.

4. The anti-accidental pressing baby crib lifting armrest structure as described in claim 2, characterized in that: One end of the button hole is provided with a cutout to provide pushing space for the button cover, and the other end of the button hole is provided with an abutment to limit the pushing distance of the button cover.

5. The anti-accidental pressing baby crib lifting armrest structure as described in claim 1, characterized in that: The rotating arm extends through the left and right sides. The end of the rotating arm near the locking pin is provided with a hinge interface. The end of the locking pin away from the locking hole is hinged in the hinge interface. When the push-pull member drives the locking pin to disengage from the locking hole, the end of the locking pin away from the locking hole enters the rotating arm and restricts the rotation of the rotating arm.

6. The anti-accidental pressing baby crib lifting armrest structure as described in claim 5, characterized in that: The end of the push-pull member near the locking pin is located inside the hinge interface and is provided with a second transverse groove and a placement groove. The end of the locking pin away from the locking hole is provided with a third transverse groove. The end of the locking pin away from the locking hole is located inside the placement groove. The end of the rotating arm near the locking pin is provided with a second rivet that passes through the second transverse groove and the third transverse groove.

7. The anti-accidental pressing baby crib lifting armrest structure as described in claim 1, characterized in that: It also includes a first hinge member. The joint assembly is provided in two sets, and the two sets of joint assemblies are symmetrical from left to right. The other end of the upper tube of the first joint is hinged to the first hinge member.

8. The anti-accidental pressing baby crib lifting armrest structure as described in claim 7, characterized in that: The joint assembly further includes a first joint lower tube, one end of which is hinged to a sliding member, and the other end of which is hinged to a first hinge member.

9. The anti-accidental pressing baby crib lifting armrest structure as described in claim 8, characterized in that: The first hinge member has two sets of guide inclined grooves, two sets of guide horizontal grooves, and one set of guide vertical grooves. The two sets of guide inclined grooves are symmetrical from left to right, and the two sets of guide horizontal grooves are symmetrical from left to right. Each set of guide inclined grooves and each set of guide horizontal grooves corresponds to a first joint upper tube. Each set of guide inclined grooves is composed of two guide inclined grooves arranged front to back, and each set of guide horizontal grooves is composed of two guide horizontal grooves arranged front to back. Each set of guide vertical grooves is composed of two guide vertical grooves arranged front to back. A third rivet passes through each set of guide inclined grooves, and a fourth rivet passes through each set of guide horizontal grooves. The third and fourth rivets pass through the first joint upper tube. The first hinge member has two first linkage plates arranged front to back. Each first linkage plate corresponds to a first joint lower tube. A fifth rivet passes through one set of guide vertical grooves. The fifth rivet passes through the top of the two first linkage plates. The bottom of the first linkage plate is hinged to the other end of the first joint lower tube.

10. A crib, employing the anti-accidental pressing crib lifting armrest structure as described in any one of claims 1-9, characterized in that: The device includes four support members, four uprights, four corner pieces, three sets of folding armrest structures, a crib lifting armrest structure, and a folding base. The four uprights are distributed at the four corners, with each upright corresponding to one support member and one corner piece. The support members are connected to the bottom of the uprights, and the corner pieces are connected to the top of the uprights. The crib lifting armrest structure and the three sets of folding armrest structures are distributed on the four sides. The crib lifting armrest structure is connected between two corresponding corner pieces, and the three sets of folding armrest structures are hinged between two corresponding corner pieces. A base tube is hinged between each support member and the folding base. The slide rail is connected to the uprights, and the top of the sliding member and the slide rail are located inside the corner piece.

11. A crib as described in claim 10, characterized in that: The folding base includes an upper chassis component, a lower chassis component, a sleeve, a chassis handle, and feet. The upper chassis component has a sleeve hole, and the upper part of the sleeve is connected to the sleeve hole. The chassis handle is located inside the sleeve and can be pulled within the sleeve. The top of the chassis handle extends out of the top of the sleeve and is located outside the upper chassis component. The lower chassis component is located below the upper chassis component and is fitted around the outer periphery of the sleeve. A second linkage plate is hinged between the chassis tube and the lower chassis component. The feet are connected to the bottom of the sleeve and have two sets of locking plates arranged in an "X" shape. The lower part of the sleeve has two slots for the upper parts of the two sets of locking plates to be engaged. When the chassis handle is lifted, it causes the two sets of locking plates to retract. When the chassis handle is released, the two sets of locking plates automatically return to their original positions. The upper chassis component is hinged with two symmetrical support rods.

12. A crib as described in claim 11, characterized in that: The upper part of the chassis handle is open to the left and right. The lower part of the chassis handle is provided with a spring placement groove. One side of the spring placement groove has an opening. A third spring is placed in the spring placement groove. One side of the chassis handle has a first strip groove. The other side of the chassis handle has a second strip groove. The second strip groove is located above the opening and communicates with the opening. Both opposite sides of the chassis handle are connected to driving plates. Each driving plate has a third strip groove. A sixth rivet passes through the chassis upper part. The sixth rivet passes through the sleeve, the first strip groove, the second strip groove, and the third strip groove. The top of the third spring abuts against the sixth rivet. The top of the foot piece has a mounting opening. The bottom of the two sets of locking plates is hinged in the mounting opening. Both sets of locking plates have a fourth strip groove. A first pin passes between the bottoms of the two driving plates. The first pin passes through the fourth strip groove of the two sets of locking plates.

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