TW202537552A - Folding mechanism and baby crib - Google Patents

Abstract

A folding mechanism for a baby crib includes a handrail tube pivotable between an unfolded position and a folded position, a fixing base having a lateral end pivotably connected to the handrail tube, a locking member movably sleeved into a pivoting end of the handrail tube and slidable between a first locking position and a first unlocking position, and an operating member slidably connected to the fixing base and slidable between a second locking position and a second unlocking position. When the operating member slides from the second locking position to the second unlocking position, the operating member drives the locking member to slide from the first locking position to the first unlocking position. In the first locking position, the locking member prohibits the handrail tube from pivoting, and in the first unlocking position, the locking member allows the handrail tube to pivot.

Description

Closure facilities and baby beds

This application relates to the field of technology for children's products, and in particular to a folding mechanism for a crib.

To facilitate storage, cribs are often equipped with folding mechanisms so that they can be folded up when not in use, reducing space occupied. However, current common folding mechanisms are often complex in structure and have high manufacturing costs.

Therefore, it is necessary to provide a folding mechanism and a crib for use in infants, which is simple in structure and low in manufacturing cost.

According to one aspect of this application, a folding mechanism for a crib is provided, the folding mechanism comprising: an armrest tube; a fixed base; a locking element; and an operating element. The armrest tube is pivotable between an extended position and a folded position. A side end of the fixed base is pivotally connected to the armrest tube. The locking element is movably sleeved on the pivot end of the armrest tube, and the locking element is slidable between a first locked position and a first unlocked position. The operating element is slidably connected to the fixed base, and the operating element is slidable between a second locked position and a second unlocked position. When the operating member slides from the second locked position to the second unlocked position, the operating member drives the locking member to slide from the first locked position to the first unlocked position. In the first locked position, the locking member restricts the rotation of the handrail tube; in the first unlocked position, the locking member allows the rotation of the handrail tube.

In the folding mechanism according to the embodiment of this application, by operating the drive, the locking member can be driven to the first unlocked position, allowing the armrest tube to pivot relative to the fixed seat, thereby realizing the folding of the crib. This folding mechanism has a simple structure, low manufacturing cost, and is easy to operate; simply operating the drive allows the armrest tube to pivot, thus folding the crib.

In one embodiment, the locking end of the locking member is provided with a mating ramp, and the operating member is provided with a driving ramp that drives the mating ramp. When the operating member slides from the second locking position to the second unlocking position, the driving ramp abuts against and presses against the mating ramp, thereby driving the locking member to slide from the first locking position to the first unlocking position.

In one embodiment, the end face of the locking end is formed with a recess, the bottom surface of which is inclined relative to the end face of the locking end to form the mating slope.

In one embodiment, the actuating element includes a driving portion extending in a longitudinal direction, the end of the driving portion having a driving ramp formed thereon, the driving ramp engaging with the mating ramp within the recess.

In one embodiment, the hinge end of the handrail tube is provided with a first hole, the locking member is provided with a second hole, and the fixing seat is provided with a third hole. The hinge passes through the first hole, the second hole, and the third hole to allow the handrail tube and the locking member to pivot relative to the fixing seat.

In one embodiment, the locking member includes: a fixing part; and a locking part. The fixing part is non-slidable in the axial direction of the handrail tube, and the second hole is provided on the fixing part and is circular. The locking part is slidably connected to the fixing part and is capable of sliding between a first locked position and a first unlocked position along the axial direction of the handrail tube.

In one embodiment, the second hole is an elongated hole, allowing the locking member to slide between the first locked position and the first unlocked position along the axial direction of the handrail tube.

In one embodiment, the retracting mechanism further includes a first elastic member. One end of the first elastic member abuts against the fixed part, and the other end of the first elastic member abuts against the locking part. When the handrail tube is in the extended position, the first elastic member biases the locking part toward the first locking position.

In one embodiment, the retracting mechanism further includes a first elastic member. One end of the first elastic member abuts against the connecting member, and the other end of the elastic member abuts against the locking member. When the handrail tube is in the extended position, the first elastic member biases the locking member toward the first locked position.

In one embodiment, a locking hole is formed inside the fixing base. When the locking member is in the first locked position, the locking end of the locking member enters the locking hole to restrict the rotation of the handrail tube relative to the fixing base. When the locking member is in the first unlocked position, the locking end of the locking member exits the locking hole to allow the rotation of the handrail tube relative to the fixing base.

In one embodiment, the locking hole is located on the upper side of the fixing seat and extends in the lateral direction of the fixing seat.

In one embodiment, the mounting base is provided with a guide rib extending from the lower side of the locking hole toward the lateral end of the mounting base. The guide rib forms a guide arc surface on one side toward the handrail tube. When the handrail tube pivots relative to the mounting base, the locking end of the locking member slides on the guide arc surface.

In one embodiment, the mounting base further includes a limiting portion disposed on one side of the guide rib near the lateral end of the mounting base, the limiting portion restricting the rotation of the handrail tube toward the extended position when the handrail tube is in the retracted position.

In one embodiment, the limiting part includes a limiting step and a limiting surface, the limiting step being disposed between the limiting surface and the guide arc surface, and the distance between the limiting surface and the pivot center of the handrail tube being greater than the distance between the guide arc surface and the pivot center of the handrail tube.

In one embodiment, the mounting base defines a receiving cavity in which the operating member is at least partially received.

In one embodiment, the operating member is provided with a connecting protrusion, and the side wall of the receiving cavity is provided with a connecting groove that mates with the connecting protrusion. When the operating member slides relative to the fixed seat, the connecting protrusion slides along the connecting groove.

In one embodiment, the connecting groove is an elongated groove extending in the longitudinal direction.

In one embodiment, the upper wall of the accommodating cavity is provided with a through hole that communicates with the locking hole, and the operating member includes a driving part extending in the longitudinal direction that passes through the through hole and engages with the locking end of the locking member.

In one embodiment, the retraction mechanism further includes a second elastic member, one end of which abuts against the operating member and the other end of which abuts against the fixed seat, the second elastic member biasing the operating member toward the second locking position.

In one embodiment, the mounting base includes a bottom wall that at least partially covers the interior space of the mounting base.

In the closing mechanism according to this embodiment, the internal space of the fixing base is shielded by the bottom wall. When the user performs the closing operation, the user's fingers are blocked by the bottom wall and cannot enter the internal space of the fixing base. This avoids the risk of the user's fingers being pinched by components in the internal space of the fixing base, such as the operating parts, locking parts, or part of the armrest tube.

According to one aspect of this application, a baby bed is provided, including the folding mechanism of the aforementioned embodiments. The baby bed according to the embodiments of this application has a simple structure and low manufacturing cost.

To facilitate understanding of this application, a more comprehensive description of it will be provided below with reference to the accompanying figures. The figures illustrate preferred embodiments of this application. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this application more thorough and complete.

It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "installed," "one end," "the other end," and similar expressions used in this article are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art within the scope of this application. The terms used in the description of this application are for the purpose of describing specific embodiments only and are not intended to limit the application. The term "and/or" as used herein includes any and all combinations of one or more of the related listed items.

Referring to Figures 1A, 1B, and 2, one embodiment of this application provides a crib 2, which includes a folding mechanism 1 and a support column 80. The user can fold the crib 2 from the unfolded state shown in Figures 1A and 1B to the folded state shown in Figure 2 by operating the folding mechanism 1. In this application, the direction perpendicular to the horizontal surface on which the crib 2 is placed is defined as the "longitudinal direction," as shown by direction D1 in Figure 1A. Referring to Figures 3, 4A, 4B, and 4C, in this application, the left-right direction shown in Figure 4B is defined as the "lateral direction," as shown by direction D2 in Figure 4B, wherein direction D2 is perpendicular to direction D1. In one embodiment, the retraction mechanism 1 includes: a handrail tube 10; a fixed base 20; a locking element 30; and an operating element 40. The handrail tube 10 includes a hinge end 101, which is inserted into and hinged in the fixed base 20. A side end of the fixed base 20 is hinged to the handrail tube 10. The handrail tube 10 is pivotable relative to the fixed base 20 between an extended position and a retracted position. The locking element 30 is at least partially movably fitted into the inner hole of the hinge end 101 of the handrail tube 10. The locking element 30 is slidable between a first locked position and a first unlocked position. The operating element 40 is slidably connected to the fixed base 20 and is slidable between a second locked position and a second unlocked position. When the operating member 40 slides from the second locked position to the second unlocked position, the operating member 40 can drive the locking member 30 to slide from the first locked position to the first unlocked position. In the first locked position, the locking member 30 restricts the rotation of the handrail tube 10 relative to the fixed base 20; in the first unlocked position, the locking member 30 allows the handrail tube 10 to rotate relative to the fixed base 20. Specifically, the user operates the operating member 40, causing the operating member 40 to slide from the second locked position to the second unlocked position, which in turn drives the locking member 30 to slide from the first locked position to the first unlocked position. Thus, the locking element 30 releases the locking of the armrest tube 10, allowing the user to rotate the armrest tube 10 from the extended position to the folded position, thereby folding the crib 2.

Referring to Figures 4C and 9, in one embodiment, the locking end 301 of the locking member 30 is provided with a mating ramp 3011, and the operating member 40 is provided with a driving ramp 4011 that drives the mating ramp 3011. When the operating member 40 slides from the second locking position to the second unlocking position, the driving ramp 4011 abuts against and presses against the mating ramp 3011 to drive the locking member 30 to slide from the first locking position to the first unlocking position. A locking hole 201 is formed inside the fixed base 20. When the locking member 30 is in the first locking position, the locking end 301 enters the locking hole 201 to restrict the rotation of the handrail tube 10 relative to the fixed base 20. When the locking member 30 is in the first unlocked position, the locking end 301 exits the locking hole 201 to allow the armrest tube 10 to rotate relative to the fixed seat 20.

Referring to Figures 4C and 6C, in Figure 4C, the locking member 30 is in the first locked position and the operating member 40 is in the second locked position; in Figure 6C, the locking member 30 is in the first unlocked position and the operating member 40 is in the second unlocked position. In the state shown in Figure 4C, the locking end 301 of the locking member 30 is inserted into the locking hole 201, and the driving ramp 4011 of the operating member 40 does not apply pressure to the mating ramp 3011 of the locking member 30, or only applies slight pressure to the mating ramp 3011, thus preventing the locking end 301 of the locking member 30 from exiting the locking hole 201. At this time, since the portion of the locking member 30 other than the locking end 301 is inserted into the inner hole of the pivot end 101 of the handrail tube 10, and the locking end 301 of the locking member 30 is inserted into the locking hole 201, the handrail tube 10 cannot pivot relative to the fixed base 20. In the state shown in Figure 4C, the user operates (e.g., presses) the operating member 40, and the driving ramp 4011 of the operating member 40 applies pressure to the mating ramp 3011 of the locking member 30. Through the driving engagement of the driving ramp 4011 and the mating ramp 3011, the locking member 30 slides away from the locking hole 201 until the locking end 301 of the locking member 30 exits the locking hole 201. At this time, the handrail tube 10 can rotate relative to the fixed base 20.

Referring again to Figure 9, in one embodiment, the locking member 30 is generally cylindrical. Alternatively, the locking member 30 can also be other suitable shapes, such as prisms, as long as they meet the fitting requirements with the pivot end 101 and locking hole 201 of the handrail tube 10. The end face 3012 of the locking end 301 has a recess 3013, the bottom surface of which is inclined relative to the end face 3012 of the locking end 301 to form a mating slope 3011.

Referring to Figures 5C and 7C, in Figure 5C, the locking member 30 is in a first locked position and the operating member 40 is in a second locked position; in Figure 7C, the locking member 30 is in a first unlocked position and the operating member 40 is in a second unlocked position. In one embodiment, the portion of the locking end 301 of the locking member 30, other than the recess 3013, forms an anti-rotation portion 3014. In the state shown in Figure 5C, the locking end 301 of the locking member 30 is inserted into the locking hole 201, and the engagement between the anti-rotation portion 3014 and the inner wall of the locking hole 201 prevents the locking member 30 from rotating, thereby preventing the handrail tube 10 from rotating relative to the fixed base 20. In the state shown in Figure 7C, the locking end 301 of the locking member 30 is disengaged from the locking hole 201, and the handrail tube 10 can rotate relative to the fixed seat 20.

Referring to Figure 11, in one embodiment, the operating member 40 includes a driving portion 401 extending in the longitudinal direction, and a driving ramp 4011 is formed on the end of the driving portion 401. The driving ramp 4011 can drive and engage with the mating ramp 3011 within the recess 3013.

Referring to Figures 4C, 9, and 10, specifically, the end of the driving part 401 of the operating member 40 enters the recess 3013 of the locking end 301 of the locking member 30, thereby causing the driving ramp 4011 and the mating ramp 3011 to come into contact with each other, realizing the driving engagement between the two.

Referring to Figures 2, 3, 4C, and 10, in one embodiment, the hinge end 101 of the handrail tube 10 is provided with a first hole 1011, the locking member 30 is provided with a second hole 302, and the fixing seat 20 is provided with a third hole 202. The hinge member 50 passes through the first hole 1011, the second hole 302, and the third hole 202 to allow the handrail tube 10 and the locking member 30 to pivot about the pivot axis X (see Figure 2) relative to the fixing seat 20. Alternatively, the second hole 302 is an elongated hole, allowing the locking member 30 to slide between a first locked position and a first unlocked position along the axial direction of the handrail tube 10.

Referring to Figure 4C, in one embodiment, the retracting mechanism 1 further includes a first elastic element 60. One end of the first elastic element 60 abuts against the connecting member 50, and the other end of the first elastic element 60 abuts against the locking member 30. When the handrail tube 10 is in the extended position, the first elastic element 60 biases the locking member 30 toward a first locked position. In this embodiment, the first elastic element 60 is a spring. Alternatively, the first elastic element 60 can also be other suitable elastic elements, such as a spring sheet, torsion spring, etc., as long as it meets the requirement of biasing the locking member 30 toward the first locked position. As shown in Figure 4C, because the first elastic member 60 biases the locking member 30 toward the first locking position, the locking end 301 of the locking member 30 constantly has a tendency to slide toward the locking hole 201. When no external force is applied to the operating member 40, the locking end 301 of the locking member 30 is held in the locking hole 201 under the action of the first elastic member 60, that is, the locking member 30 is held in the first locking position. In this way, on the one hand, the crib can be kept in the unfolded state for convenient use, and on the other hand, the accidental folding of the crib can be avoided, ensuring safety during use. In this embodiment, one end of the first elastic member 60 abuts against the hinge member 50, and the other end of the first elastic member 60 abuts against the locking member 30. The hinge member 50 can slide in the second hole 302 in the form of an elongated slot to allow the locking member 30 to slide between a first locked position and a first unlocked position along the axial direction of the handrail tube 10. In other embodiments not shown, the locking member 30 may also include a fixing part and a locking part, with the locking part slidably connected to the fixing part. For example, the locking part is sleeved within the fixing part, and the locking part is retractable relative to the fixing part. The locking end 301 is provided at the end of the locking part away from the fixing part. In this embodiment, the structure of the locking end 301 is the same as that of the locking end 301 in the aforementioned embodiment. A second hole 302 is provided on the fixing part and is circular. The diameter of the second hole is slightly larger than the outer diameter of the hinge 50 to allow the hinge 50 to pass through the second hole 302. When the hinge 50 passes through the first hole 1011, the second hole 302, and the third hole 202, the fixing part cannot slide in the axial direction of the handrail tube 10. One end of the first elastic member 60 abuts against the fixed part, and the other end of the first elastic member 60 abuts against the locking part. Thus, the locking part is slidably connected to the fixed part via the first elastic member 60. The locking part can slide between a first locked position and a first unlocked position along the axial direction of the handrail tube 10. The first elastic member 60 biases the locking part toward the first locked position, and the locking end 301 of the locking part constantly has a tendency to slide toward the locking hole 201. When no external force is applied to the operating member 40, the locking end 301 of the locking member 30 is held in the locking hole 201 by the action of the first elastic member 60, preventing the handrail tube 10 from rotating relative to the fixed seat 20. When an external force drives the operating member 40, the driving inclined surface 4011 of the operating member 40 applies pressure to the mating inclined surface 3011 of the locking end 301, and the locking end 301 of the locking member 30 slides away from the locking hole 201 until it is completely disengaged from the locking hole 201, so that the handrail tube 10 can rotate relative to the fixed seat 20.

Referring to Figures 4C and 10, in one embodiment, the fixed base 20 defines a receiving cavity 203, in which the operating member 40 is at least partially received. The closing mechanism 1 further includes a second elastic member 70, one end of which abuts against the operating member 40, and the other end of which abuts against the fixed base 20. The second elastic member 70 biases the operating member 40 toward a second locked position. In this embodiment, the second elastic member 70 is a spring. Alternatively, the second elastic member 70 may be other suitable elastic elements, such as a spring sheet, a torsion spring, etc., as long as they satisfy the requirement of biasing the operating member 40 toward the second locked position. Because the second elastic member 70 biases the operating member 40 toward the second locking position, the operating member 40 always has a downward tendency to move in the longitudinal direction. When no external force is applied to the operating member 40, the operating member 40 remains in the second locking position. At this time, the driving ramp 4011 of the operating member 40 does not apply pressure to the mating ramp 3011 of the locking member 30, or only applies slight pressure to the mating ramp 3011. The locking end 301 of the locking member 30 is held in the locking hole 201 under the action of the first elastic member 60. That is, the unlocking member 40 remains in the second locking position, while the locking member 30 remains in the first locking position.

Referring to Figures 4C, 10, and 11, in one embodiment, the operating member 40 is provided with a connecting protrusion 402, and the side wall of the receiving cavity 203 is provided with a connecting groove 204 that mates with the connecting protrusion 402. When the operating member 40 slides relative to the fixed base 20, the connecting protrusion 402 slides along the connecting groove 204. The connecting groove 204 is an elongated groove extending in the longitudinal direction. Specifically, the lower end of the connecting groove 204 in the longitudinal direction is positioned such that when the operating member 40 slides to the point where the connecting protrusion 402 abuts against the lower end of the connecting groove 204 in the longitudinal direction, the operating member 40 is in a second locked position; the upper end of the connecting groove 204 in the longitudinal direction is positioned such that when the operating member 40 slides to the point where the connecting protrusion 402 abuts against the upper end of the connecting groove 204 in the longitudinal direction, the operating member 40 is in a second unlocked position.

Referring to Figure 10, the upper wall of the accommodating cavity 203 is provided with a through hole 205, which communicates with the locking hole 201. The driving part 401 passes through the through hole 205 and engages with the locking end 301 of the locking member 30. Optionally, the locking hole 201 is located on the upper side of the fixing base 20 and extends along the lateral direction of the fixing base 20.

Referring to Figures 6C and 8C, a guide rib 206 is provided within the fixing base 20, extending from the lower side of the locking hole 201 towards the lateral end of the fixing base 20. The guide rib 206 forms a guide arc surface 2061 on the side facing the armrest tube 10. When the armrest tube 10 pivots relative to the fixing base 20, the locking end 301 of the locking member 30 slides on the guide arc surface 2061. Specifically, when the locking member 30 is in the first unlocked state shown in Figure 6C, the user pivots the armrest tube 10 from the unfolded position around the pivot axis X (see Figure 2) to the folded position shown in Figure 8C.

Referring again to Figures 6C and 8C, in one embodiment, the mounting base 20 further includes a limiting portion 207 disposed on the side of the guide rib 206 near the lateral end of the mounting base 20. When the handrail tube 10 is in the retracted position, the limiting portion 207 restricts the rotation of the handrail tube 10 toward the extended position. The limiting portion 207 includes a limiting step 2071 and a limiting surface 2072, with the limiting step 2071 disposed between the limiting surface 2072 and the guide arc surface 2061. The mounting base 20 also includes a bottom wall 208 and a side wall 209. The limiting surface 2072 is disposed on the side of the bottom wall 209 facing the interior space of the mounting base 20. The bottom wall 209 at least partially covers the interior space of the mounting base 20.

In this embodiment, the guide arc surface 2061, the limiting step 2071, the limiting surface 2072, and the side wall 209 together define the rotation space. When the handrail tube 10 pivots, the pivot end 101 of the handrail tube 10 pivots in this rotation space, and the locking end 301 of the locking member 30 slides on the guide arc surface 2061, the limiting step 2071, and the limiting surface 2072. Specifically, when the handrail tube 10 pivots from the unfolded position shown in Figure 6C to the folded position shown in Figure 8C, the pivot end 101 of the handrail tube 10 pivots from a generally horizontal position to a generally vertical position. Under the action of the second elastic element 70, the locking end 301 of the locking element 30 presses against and slides sequentially on the guide arc surface 2061, the limiting step 2071, and the limiting surface 2072. When the locking end 301 slides past the limiting step 2071 and reaches the limiting surface 2072, since the distance W between the limiting surface 2072 and the pivot center of the handrail tube 10 is greater than the distance R between the guide arc surface 2061 and the pivot center of the handrail tube 10, the locking element 30 extends a small distance away from the pivot center under the action of the second elastic element 70 to press against the limiting surface 2072. At this time, the anti-rotation part 3014 of the locking member 30 will abut against the limiting surface 2072, thereby preventing the handrail tube 10 from rotating toward the unfolded position. This is used to prevent the handrail tube 10 from accidentally unfolding when it is in the folded position, thus improving the safety of use.

In this embodiment, the limiting step 2071 has an arcuate surface. When the handrail tube 10 has a tendency to rotate toward the extended position, the engagement of the arcuate surface with the anti-rotation portion 3014 can apply pressure toward the rotation center to the anti-rotation portion 3014. As the tendency of the handrail tube 10 to rotate toward the extended position increases, for example, as the force driving the handrail tube 10 to rotate toward the extended position increases, the pressure applied by the arcuate surface to the anti-rotation portion 3014 toward the rotation center increases. When the pressure applied by the curved surface to the anti-rotation part 3014 toward the pivot center is greater than the elastic force provided by the second elastic member 70, the anti-rotation part 3014 of the locking member 30 retracts toward the pivot center, and the anti-rotation part 3014 can slide past the limiting step 2071 and slide to the guide curved surface 2061. At this point, the limiting step 2071 no longer obstructs the pivoting of the armrest tube 10 toward the unfolded position. Specifically, in use, the user only needs to apply a certain external force to the armrest tube 10 to overcome the obstruction of the limiting step 2071, so that the armrest tube 10 pivots toward the unfolded position to unfold the crib 2.

Referring again to Figure 10, the bottom wall 208 at least partially obscures the interior space of the mounting base 20. When the user presses the operating element 40, the user's fingers will be blocked by the bottom wall 208 and will not enter the interior space of the mounting base 20. This avoids the risk of the user's fingers being pinched by components in the interior space of the mounting base 20 (such as the operating element 40, the locking element 30, or the hinge end 101 of the armrest tube 10). Alternatively, the mounting base 20 may also include side walls that at least partially obscure the interior space of the mounting base 20, preventing the user's fingers from being pinched by inserting them into the mounting base from the side.

The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The embodiments described above merely illustrate several implementations of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application shall be determined by the appended claims.

1: Folding mechanism 2: Baby bed 10: Armrest tube 101: Connecting end 1011: First hole 20: Fixing base 201: Locking hole 202: Third hole 203: Reception cavity 204: Connecting groove 205: Through hole 206: Guide rib 2061: Guide arc surface 207: Limiting part 2071: Limiting step 2072: Limiting surface 208: Folding mechanism 209: Side wall 30: Locking element 301: Locking end 3011: Mating slope; 3012: End face; 3013: Recessed portion; 3014: Anti-rotation portion; 302: Second hole; 40: Operating component; 401: Driving part; 402: Connecting protrusion; 4011: Driving slope; 50: Connector; 60: First elastic component; 70: Second elastic component; 80: Support column; A, B, C, D, E: Section lines; D1, D2: Direction; H, I, J, K, L: Part; R, W: Distance; X: Rotation axis.

Figure 1A is a schematic perspective view of a crib according to an embodiment of the present application in its unfolded state. Figure 1B is a schematic perspective view of the crib shown in Figure 1A from a bottom angle. Figure 2 is a schematic perspective view of a crib according to an embodiment of the present application in its folded state. Figure 3 is a schematic diagram of the hinge end structure of the armrest tube according to an embodiment of the present application, wherein other parts of the armrest tube are omitted. Figure 4A is a schematic top view of a crib according to an embodiment of the present application in its unfolded state, wherein half of the crib structure is omitted and the locking member is in the first locked position. Figure 4B is a cross-sectional view taken along line A-A shown in Figure 4A. Figure 4C is a partial enlarged view of portion H in Figure 4B. Figure 5A is a schematic top view of a crib in an unfolded state according to an embodiment of the present application, wherein half of the crib structure is omitted and the locking element is in a first locked position. Figure 5B is a cross-sectional view taken along line B-B shown in Figure 5A. Figure 5C is a partially enlarged view of portion I in Figure 5B. Figure 6A is a schematic top view of a crib in an unfolded state according to an embodiment of the present application, wherein half of the crib structure is omitted and the locking element is in a first unlocked position. Figure 6B is a cross-sectional view taken along line C-C shown in Figure 6A. Figure 6C is a partially enlarged view of portion J in Figure 6B. Figure 7A is a schematic top view of a crib in an unfolded state according to an embodiment of the present application, omitting half of the crib structure, with the locking element in the first unlocked position. Figure 7B is a cross-sectional view taken along line D-D shown in Figure 7A. Figure 7C is a partially enlarged view of portion K in Figure 7B. Figure 8A is a schematic top view of a crib in a folded state according to an embodiment of the present application. Figure 8B is a cross-sectional view taken along line E-E shown in Figure 8A. Figure 8C is a partially enlarged view of portion L in Figure 8B. Figure 9 is a structural schematic diagram of the locking element according to an embodiment of the present application. Figure 10 is a structural schematic diagram of the fixing base according to an embodiment of the present application. Figure 11 is a schematic diagram of the structure of an operating component according to an embodiment of this application.

1: Collection and Distribution Mechanism

2: Baby crib

10: Handrail tubes

20: Fixed base

40: Operating components

80: Support Column

D1: Direction

Claims (10)

A folding mechanism for a crib includes: an armrest tube pivotable between an extended position and a folded position; a mounting base pivotally connected to the armrest tube at one end; a locking member movably sleeved on the pivoted end of the armrest tube and slidable between a first locked position and a first unlocked position; and an operating member slidably connected to the mounting base and slidable between a second locked position and a second unlocked position; wherein, when the operating member slides from the second locked position to the second unlocked position... The operating member drives the locking member to slide from the first locked position to the first unlocked position; wherein, in the first locked position, the locking member restricts the rotation of the handrail tube; in the first unlocked position, the locking member allows the rotation of the handrail tube; the end face of the locking end of the locking member forms a mating inclined surface, and the operating member is provided with a driving inclined surface that drives and engages with the mating inclined surface; when the operating member slides from the second locked position to the second unlocked position, the driving inclined surface abuts against and presses against the mating inclined surface to drive the locking member to slide from the first locked position to the first unlocked position. The retraction mechanism as described in claim 1, wherein a locking hole is formed inside the fixing base; when the locking member is in the first locking position, the locking end enters the locking hole to restrict the rotation of the handrail tube relative to the fixing base; when the locking member is in the first unlocking position, the locking end exits the locking hole to allow the rotation of the handrail tube relative to the fixing base. As described in claim 2, the locking mechanism has a recessed portion on the end face of the locking end of the locking member, the bottom surface of the recessed portion being inclined relative to the end face to form the mating inclined surface, and the portion other than the recessed portion forming an anti-rotation portion. When the locking end of the locking member is inserted into the locking hole, the anti-rotation portion engages with the inner wall of the locking hole to prevent the locking member from rotating, thereby preventing the handrail tube from rotating relative to the fixed base. The retraction mechanism as described in claim 3, wherein the operating member includes a drive portion extending in a longitudinal direction, the drive ramp being formed on the end of the drive portion, the drive ramp engaging with the mating ramp within the recess. As described in claim 4, the retracting mechanism includes a receiving cavity defined within the fixed base, in which the operating member is at least partially received. The upper wall of the receiving cavity is provided with a through hole that communicates with the locking hole, and the driving part passes through the through hole and engages with the locking end of the locking member. The retracting mechanism as described in claim 2, wherein the locking hole is provided on the upper side of the fixing seat and extends in the lateral direction of the fixing seat. As described in claim 2, the retracting mechanism includes a guide rib inside the fixing base, the guide rib extending from the lower side of the locking hole to the lateral end of the fixing base, and the guide rib forming a guide arc surface on one side facing the handrail tube; when the handrail tube pivots relative to the fixing base, the locking end of the locking member slides on the guide arc surface. The retractable mechanism as described in claim 7, wherein the fixed base further includes a limiting portion disposed on one side of the guide rib near the lateral end of the fixed base, wherein when the handrail tube is in the retracted position, the limiting portion restricts the rotation of the handrail tube toward the extended position. As described in claim 8, the retraction mechanism includes a limiting step and a limiting surface. The limiting step is disposed between the limiting surface and the guide arc surface. The distance between the limiting surface and the pivot center of the handrail tube is greater than the distance between the guide arc surface and the pivot center of the handrail tube. A baby bed comprising a folding mechanism as described in any one of claims 1 to 9.