Support legs and cribs

Abstract

The present application discloses a support leg and a children's bed, wherein the support leg comprises: a first support leg and a second support leg, the top ends of which are rotated and matched around a rotation axis through a first joint and a second joint, and the first joint and the second joint together form a mounting cavity; a locking ratchet, which is located in the mounting cavity and can slide along the rotation axis, and the locking ratchet has a locking position that is simultaneously engaged with the first joint and the second joint; a driving assembly, including a ratchet elastic member that keeps the locking ratchet in the locking position and a driving member that drives the locking ratchet to exit the locking position. The technical solution disclosed in the present application can realize the unfolding and folding of the support leg through the mutual rotation of the first joint and the second joint, thereby simultaneously meeting the dual requirements of similar products that a larger volume is required during use and a smaller volume is required during storage and transportation; the locking ratchet can ensure the stability of the spatial state of the support leg, improving convenience while ensuring safety.

Description

Technical Field

[0001] The present application relates to the field of children's products, in particular to a support leg and a children's bed. Background Art

[0002] Children's beds are a common children's product. As parents have different heights and use scenarios are varied, more and more children's beds have height adjustment functions added to facilitate parents' use.

[0003] For example, a Chinese patent document with publication number CN209346495U discloses a height-adjustable baby rocking bed, a technical field of furniture design and production, including a baby rocking bed body and a support frame; the support frame is arranged at both ends of the baby rocking bed body; and the support frame is connected to the baby rocking bed body through a locking device; the locking device includes a rear fixed shell arranged on the baby rocking bed body and a front fixed shell arranged on the support frame. The utility model provides a height-adjustable baby rocking bed support frame that can support the baby rocking bed body, and can swing the baby rocking bed body or lock the baby rocking bed body through a locking device; at the same time, the height of the baby rocking bed body is easy to adjust. However, in this technical solution, if the user needs to store the child's bed, the disassembly between the main body and the support frame is relatively cumbersome; during use, the height adjustment position is prone to a gap that can pinch the hand. Therefore, there is still room for improvement in terms of convenience and safety.

[0004] At the same time, the inventors also found that the children's bed products in the related art are large in size and inconvenient in storage and transportation. While increasing the logistics and distribution costs, it also causes inconvenience to users in storage and transportation during use. Summary of the invention

[0005] In order to safely realize the lifting and lowering of the child bed, improve convenience, facilitate storage and transportation while ensuring safety, the present application discloses a support leg, including:

[0006] The first support leg and the second support leg, the top ends of which are rotated and matched around the rotation axis through the first joint and the second joint, and the first joint and the second joint together form a mounting cavity;

[0007] a locking ratchet located in the mounting cavity and capable of sliding along the rotation axis, the locking ratchet having a locking position for simultaneously engaging with both the first joint and the second joint, and a releasing position for engaging with only one of the first joint and the second joint;

[0008] The driving assembly comprises a ratchet elastic member for keeping the locking ratchet in a locking position and a driving member for driving the locking ratchet to enter a releasing position.

[0009] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0010] Optionally, the first joint includes a first disk surrounding the rotation axis, and the second joint includes a second disk surrounding the rotation axis, the first disk and the second disk are close to each other on the rotation axis to enclose the installation cavity, a first locking groove is provided on the inner wall of the first disk, and a second locking groove is provided on the inner wall of the second disk, and the first locking groove and the second locking groove can engage with the locking ratchet.

[0011] Optionally, the first support leg and the second support leg have a folded state where they are close to each other and a working state where they are rotated and separated from each other around the rotation axis;

[0012] In the working state, the first locking groove and the second locking groove are aligned, and the locking ratchet can slide in the first locking groove and the second locking groove to a locking position; in the locking position, the locking ratchet is simultaneously in the first locking groove and the second locking groove.

[0013] Optionally, a plurality of locking tongues are provided on the outer peripheral surface of the locking ratchet, a plurality of the first locking grooves and the second locking grooves are provided, and when the first joint and the second joint are in the working state, at least one pair of the first locking grooves and the second locking grooves are aligned, and the locking tongues are simultaneously in the aligned first locking grooves and the second locking grooves.

[0014] Optionally, the driving member includes:

[0015] A push plate, slidably mounted in the mounting cavity and used to drive the locking ratchet to slide along the rotation axis;

[0016] A button is used to drive the push plate, wherein the button directly abuts against the push plate or abuts against the push plate through a linkage rod.

[0017] Optionally, the supporting foot also includes a shielding cover arranged on the first joint and the second joint, the button is slidably installed on the outside of the shielding cover, the locking ratchet is arranged on the inside of the shielding cover, and the linkage rod passes through the shielding cover and is linked to press between the push plate and the button.

[0018] Optionally, an adapter hole for mounting an expansion device is provided on a side of the shielding cover facing away from the button, and the rotation axis passes through the adapter hole.

[0019] The present application also discloses a children's bed, comprising a bed frame and the supporting legs in the above technical solution, wherein supporting arms are rotatably installed on two opposite sides of the bed frame, the supporting legs have two sets, each set of supporting legs is respectively installed with a sliding groove, the supporting arms are movably inserted into the sliding groove of the corresponding set of supporting legs, and the insertion depth is adjustable.

[0020] Optionally, a rotating pivot is provided on the sliding groove, and the rotating pivot is installed on the first joint and / or the second joint, and each support arm has the following features according to the positional relationship with the bed frame and the corresponding support foot:

[0021] The working state is perpendicular to the plane of the bed frame and inserted into the sliding slot; and

[0022] A folded state parallel to the plane of the bed frame and out of the sliding groove.

[0023] Optionally, a limiting hole and a plurality of locking holes arranged in sequence along the height direction are provided on the groove wall of the sliding groove;

[0024] The bed frame is connected with a support arm, and the support arm is inserted into the sliding groove, and the support arm is provided with an independently controlled locking pin and an anti-dropping pin;

[0025] The support arm has multiple intermediate gears and extreme gears that rise relative to the sliding groove. At each intermediate gear, the locking pin is engaged with the corresponding locking hole. At the extreme gear, the locking pin passes over all the locking holes along the rising path, and the anti-drop pin is engaged with the limit hole.

[0026] Optionally, the bed frame is provided with an anti-sway mechanism, and the anti-sway mechanism comprises:

[0027] a guide groove mounted on the bed frame and forming a guide path along which the rotation axis extends;

[0028] The positioning arm is slidably installed in the guide groove, and a U-shaped bayonet is provided at one end facing the sliding groove. When the bayonet is engaged with the sliding groove, the positioning arm is in a positioning state to prevent the bed frame from swinging relative to the sliding groove.

[0029] The technical solution disclosed in the present application can realize the expansion and folding of the supporting leg through the mutual rotation of the first joint and the second joint, thereby meeting the dual requirements of similar products that a larger volume is required during use and a smaller volume is required during storage and transportation. The locking ratchet can ensure the stability of the spatial state of the supporting leg, thereby improving convenience while ensuring safety.

[0030] The specific beneficial technical effects will be further explained in the specific implementation methods in combination with specific structures or steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of a supporting foot in an embodiment;

[0032] Figure 2 for Figure 1 Exploded view of the middle support leg;

[0033] Figure 3 for Figure 1 A schematic diagram of an application of the middle support leg;

[0034] Figure 4 This is a schematic diagram of a child's bed in one embodiment;

[0035] Figure 5 for Figure 4 Exploded view of a children's bed in (some supporting legs omitted);

[0036] Figure 6 for Figure 5 The enlarged schematic diagram at A in the middle;

[0037] Figure 7 for Figure 5 The enlarged schematic diagram of point B in the middle;

[0038] Figure 8 for Figure 5 The enlarged schematic diagram at C in the middle;

[0039] Fig. 9 for Figure 5 The enlarged schematic diagram at D in the middle;

[0040] Fig.10 for Figure 5 The enlarged schematic diagram at E in the middle;

[0041] Fig.11 for Figure 4 Schematic diagram of the bottom of a child's bed;

[0042] Fig.12 Schematic diagram of anti-sway mechanism;

[0043] Fig.13 for Fig.12 Schematic diagram of the middle anti-sway mechanism after omitting the guide groove;

[0044] Fig.14 for Fig.12 Schematic diagram of the positioning block in;

[0045] Fig.15 Schematic diagram of the limiting structure in the support arm.

[0046] The reference numerals in the figures are described as follows:

[0047] 1. Bed frame; 11. Support arm; 111. Locking pin; 1111. Lock tongue; 1112. Guide seat; 112. Anti-drop pin; 1121. Driving inclined plane; 1122. Anti-drop elastic member; 113. Lifting and locking mechanism; 1131. Guide block; 1132. Locking pin elastic member; 1133. Guide inclined plane; 1134. Guide hole; 1135. Driving slider; 1136. Traction rope; 1137. Guide block elastic member; 1138. Driving slider elastic member; 1141. First guide groove; 1142. Second guide groove; 1143. Third guide groove; 1151. First plate member; 1152. Second plate member; 1153. Shell; 12. Limiting structure;

[0048] 2. Support foot; 21. Sliding groove; 211. Locking hole; 212. Limiting hole; 2121. Anti-pinch chamfer; 2122. Avoidance area; 22. Second joint; 221. Second support foot; 222. Second disc; 23. First joint; 231. First support foot; 232. First disc; 233. First locking groove; 24. Locking ratchet; 241. Locking tooth; 25. Driving assembly; 251. Ratchet elastic member; 252. Push plate; 2521. Guide tooth; 253. Button; 254. Linkage rod; 26. Shielding cover; 261. Adapter hole; 27. Transverse connecting rod;

[0049] 3. Anti-sway mechanism; 31. Bed bottom plate; 32. Guide groove; 33. Positioning arm; 331. Bayonet; 332. I-shaped groove; 34. Positioning block; 341. Positioning chamfer. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0053] refer to Figures 1 to 2 , the present application discloses a supporting foot 2, comprising:

[0054] The top ends of the first support leg 231 and the second support leg 221 are rotated and matched around a rotation axis (not numbered) through the first joint 23 and the second joint 22, and the first joint 23 and the second joint 22 are surrounded to form a mounting cavity (not numbered);

[0055] The locking ratchet 24 is located in the mounting cavity and can slide along the rotation axis. The locking ratchet 24 has a locking position that is engaged with both the first joint 23 and the second joint 22 at the same time, and a releasing position that is engaged with only one of them.

[0056] The driving assembly 25 includes a ratchet elastic member 251 for keeping the locking ratchet 24 in the locking position and a driving member for driving the locking ratchet 24 to enter the unlocking position.

[0057] In this embodiment, the mutual rotation of the first joint 23 and the second joint 22 can realize the expansion and folding of the support leg 2. When the locking ratchet 24 is in the locking position, the spatial state of the support leg 2 remains stable, and the user's use needs are met by installing accessories such as children's beds, dining chairs, and children's seats on the support leg 2; when the driving component 25 drives the locking ratchet 24 to exit the locking position, the support leg 2 can adjust the spatial state to meet multiple use environments, such as when a smaller volume is required during storage and transportation, and when the height of the support leg is adjusted by adjusting the angle between the first support leg 231 and the second support leg 221, etc. The technical solution in this embodiment can facilitate users to adjust according to actual needs, thereby improving convenience.

[0058] At the same time, the technical solution in this embodiment also ensures safety. The installation cavity for installing the locking ratchet 24 is formed by the first joint 23 and the second joint 22, so that the movable parts can be accommodated in a relatively closed space, avoiding the possibility of pinching the hand gap.

[0059] In terms of the specific matching relationship between the first joint 23 and the second joint 22, in one embodiment, the first joint 23 includes a first disk 232 surrounding the rotation axis, and the second joint 22 includes a second disk 222 surrounding the rotation axis. The first disk 232 and the second disk 222 are close to each other on the rotation axis to enclose and form an installation cavity. A first locking groove 233 is provided on the inner wall of the first disk 232, and a second locking groove (not shown) is provided on the inner wall of the second disk 222. The first locking groove 233 and the second locking groove can engage with the locking ratchet 24.

[0060] The first joint 23 and the second joint 22 need to rotate relative to each other, and the locking ratchet 24 is accommodated in the installation cavity. The shape of the disc is a reasonable preference. The shape of the disc mainly refers to the part used to form the installation cavity around the rotation axis. The first disc 232 and the second disc 222 are used to form a part of the installation cavity respectively. By engaging the locking ratchet 24 with the first locking groove 233 and the second locking groove at the same time, the first disc 232 and the second disc 222 cannot rotate relative to each other around the rotation axis, thereby locking the spatial position of the first joint 23 and the second joint 22.

[0061] In terms of the working principle of the locking ratchet 24, in one embodiment, the first leg 231 and the second leg 221 have a folded state where they are close to each other and a working state where they are rotated and separated from each other around the rotation axis; in the working state, the first locking groove 233 and the second locking groove are aligned, and the locking ratchet 24 can slide in the first locking groove 233 and the second locking groove; when the locking ratchet 24 is in the locking position, the locking ratchet 24 is in the first locking groove 233 and the second locking groove at the same time.

[0062] The first locking groove 233 will rotate with the rotation of the first joint 23, and correspondingly, the second locking groove will rotate with the rotation of the second joint 22. When one of the first locking grooves 233 is aligned with one of the second locking grooves, the locking ratchet 24 has the basis for engaging the two. When the locking ratchet 24 is not interfered by other structures, the locking ratchet 24 can simultaneously engage the aligned first locking groove 233 and the second locking groove to achieve locking.

[0063] In the specific setting of the locking ratchet 24, in one embodiment, a plurality of locking teeth 241 are provided on the outer peripheral surface of the locking ratchet 24, a plurality of first locking grooves 233 and second locking grooves are provided, and when the first joint 23 and the second joint 22 are in the working state, at least one pair of the first locking grooves 233 and the second locking grooves are aligned, and the locking teeth 241 are simultaneously in the aligned first locking grooves 233 and the second locking grooves.

[0064] The locking ratchet 24 limits the relative rotation of the first joint 23 and the second joint 22 through the locking teeth 241. As shown in the scheme, the locking teeth 241 are arranged in the radial direction of the locking ratchet 24 and have a square cross-section to increase the locking torque. When there are multiple locking teeth 241, the number of aligned first locking grooves 233 and second locking grooves needs to be greater than or equal to the number of locking teeth 241 to ensure the movement of the locking ratchet 24, otherwise the groove wall of the unaligned first locking groove 233 or the second locking groove will interfere with the movement of the locking ratchet 24.

[0065] In terms of the specific selection of quantity, in one embodiment, there are N locking teeth 241, there are M first locking grooves 233 and second locking grooves, and M is greater than N. The outer periphery of the push plate 252 is provided with M guide teeth 2521, and the guide teeth 2521 can slide in the first locking groove 233 or the second locking groove.

[0066] The increase in the number of locking teeth 241, the first locking groove 233 and the second locking groove can provide more locking positions, thereby providing more possibilities for the spatial morphology change of the support leg; however, correspondingly, the increase in the number of locking teeth 241, the first locking groove 233 and the second locking groove will cause the spacing between adjacent locking teeth 241 to become shorter, as well as the spacing between adjacent first locking grooves 233 and the spacing between adjacent second locking grooves to become shorter, resulting in a decrease in the strength of the locking teeth 241, the first locking groove 233 and the second locking groove. Therefore, the support leg shown in the figure is used to adapt to a children's bed. According to the design requirements of this product, the number of locking teeth 241 is preferably 5, and the number of first locking grooves 233 and second locking grooves is preferably 7. In order to better drive the locking ratchet 24, the corresponding push plate 252 also guides its own movement through the guide teeth 2521. The number of guide teeth 2521 is preferably 7, corresponding to the number of the first locking grooves 233 and the second locking grooves.

[0067] In terms of the arrangement of the driving member, in one embodiment, the driving member includes:

[0068] A push plate 252, slidably mounted in the mounting cavity and used to drive the locking ratchet 24 to slide along the rotation axis;

[0069] Button 253, disposed on the outside of the support leg;

[0070] The linkage rod 254 is pressed between the push plate 252 and the button 253 .

[0071] As shown in the scheme, the ratchet elastic member 251 is a compression spring, which is pressed between the first disc 232 and the locking ratchet 24 to keep the locking ratchet 24 in the locked position. In the figure, the ratchet elastic member 251 is arranged around the rotation axis, and this design can improve the stability of the ratchet elastic member 251; in other designs, the ratchet elastic member 251 can also be distributed on one side of the rotation axis, but this design may cause the locking ratchet 24 to move along the rotation axis. The process is unstable and prone to jamming, and a corresponding structure is required to optimize the movement process of the locking ratchet 24.

[0072] Accordingly, the push plate 252 can evenly apply the force of the force button 253 to the locking ratchet 24, avoiding jamming due to uneven force. In the technical solution in the figure, four linkage rods 254 are provided, mainly considering the stability of the transmitted torque and the manufacturing cost. The number in the actual product may vary.

[0073] In the installation adaptation setting of the button 253, in one embodiment, the supporting foot 2 also includes a shielding cover 26 covering the first joint 23 and the second joint 22, the button 253 is slidably installed on the outside of the shielding cover 26, the locking ratchet 24 is arranged on the inside of the shielding cover 26, and the linkage rod 254 passes through the shielding cover 26 and is linked to press between the push plate 252 and the button 253.

[0074] The shielding cover 26 can accommodate the driving part to facilitate the assembly installation; secondly, it can shield the hand-pinching gap that may occur during the mutual rotation of the first joint 23 and the second joint 22 to improve safety; thirdly, it can prevent foreign matter from entering between the first joint 23 and the second joint 22 to ensure stability. As shown in the figure, the shielding cover 26 and the button 253 are installed by a one-way buckle, which prevents the button 253 from being separated from the shielding cover 26 under the action of the linkage rod 254.

[0075] In one embodiment, an adapting hole 261 for installing an expansion device is provided on a side of the shielding cover 26 facing away from the button 253 , and the rotation axis passes through the adapting hole 261 .

[0076] The adapter hole 261 is used to install an expansion device, such as the children's bed mentioned below. In actual use, the expansion device may also be a dining chair, a child seat, etc. The adapter hole 261 provides a standard interface for easy installation and adjustment. The rotation axis serves as the hinge position of the first leg 231 and the second leg 221, and has good mechanical properties, so it is reasonable to set the adapter port at this time. In fact, from the perspective of force transmission, the adapter hole 261 plays a guiding role, and the actual force-bearing components are the first joint 23 and the second joint 22.

[0077] For the application of support foot 2, refer to Figure 3 The support legs 2 can be connected by a transverse connecting rod 27 to form a three-dimensional frame to bear the load without affecting the unfolding and folding of the support legs 2.

[0078] refer to Figures 4 to 15 The present application also discloses a children's bed, comprising a bed frame 1 and the supporting legs 2 in the above technical solution, a rotating pivot (not shown) is provided on the sliding groove 21, and the rotating pivot is installed on the first joint 23 and / or the second joint 22, and each supporting arm 11 has the following characteristics according to the positional relationship with the bed frame 1 and the corresponding supporting legs 2:

[0079] A working state in which the bed frame 1 is perpendicular to the plane thereof and inserted into the sliding slot 21; and

[0080] The folded state is parallel to the plane where the bed frame 1 is located and is out of the sliding groove 21.

[0081] In the scheme shown in the figure, the first joint 23 and the second joint 22 are surrounded by a matching hole 261 for avoiding the rotation axis, and the sliding slot 21 is rotatably installed in the matching hole 261 through a rotating pivot. The rotating pivot can be formed by extending the material of the sliding slot 21 itself, or it can be replaced by a fastener.

[0082] In one embodiment, a sliding groove 21 is fixed on the support foot 2, and a limiting hole 212 and a plurality of locking holes 211 arranged in sequence along the height direction are provided on the groove wall of the sliding groove 21;

[0083] The bed frame 1 is connected with a support arm 11, and the support arm 11 is inserted into the sliding slot 21. The support arm 11 is provided with an independently controlled locking pin 111 and an anti-drop pin 112;

[0084] The support arm 11 has multiple intermediate gears and extreme gears that rise relative to the sliding groove 21. In each intermediate gear, the locking pin 111 engages with the corresponding locking hole 211. In the extreme gear, the locking pin 111 passes over all the locking holes 211 along the rising path, and the anti-slip pin 112 engages with the limit hole 212.

[0085] When the user adjusts the height of the bed frame 1, the user needs to unlock the locking pin 111 and lift the bed frame 1. During the operation, it is very likely that the support arm 11 will be completely disengaged from the sliding groove 21 due to excessive lifting force or misoperation. At this time, if the child is still in the children's bed supported by the bed frame 1, it will cause a safety hazard. The technical solution disclosed in this embodiment can prevent the bed frame 1 from being separated from the supporting foot 2 as a whole due to misoperation by setting the locking pin 111 and the anti-disengagement pin 112, while being able to adjust the height of the bed frame 1. At the same time, the movable parts for adjusting the height are completely stored in the sliding groove 21, which is not easy for users and children to contact, avoiding the possibility of hand clamping gaps and improving safety; during use, the user can unlock the anti-disengagement pin 112 to completely disassemble the bed frame 1 and the supporting foot 2, which is easy to operate and improves adaptability.

[0086] After the user unlocks the locking pin 111, the anti-drop pin 112 will not change its working state as the locking pin 111 is unlocked. When the user lifts the bed frame 1 to the limit position, all the locking pins 111 have passed the position of the locking hole 211, and the anti-drop pin 112 will automatically snap into the limit hole 212, thereby preventing the support arm 11 and the sliding slot 21 from directly disengaging. If the user still needs to separate the support arm 11 and the sliding slot 21, he only needs to manually unlock the anti-drop pin 112 to conveniently separate the support arm 11 and the sliding slot 21, that is, to separate the bed frame 1 and the support leg 2 for convenient storage and transportation.

[0087] During operation, the user hopes to reduce the operation steps as much as possible while ensuring safety to facilitate operation. In one embodiment, the locking holes 211 are arranged in a row along the ascending path, and the limiting holes 212 are arranged at the end of the entire row of locking holes 211; the locking pin 111 and the locking hole 211 have a complementary engagement shape and the engagement shape is a first shape, and the anti-dropping pin 112 and the limiting hole 212 have a complementary engagement shape and the engagement shape is a second shape.

[0088] The different shapes of the locking pin 111 and the anti-dropout pin 112 can avoid the interference between the anti-dropout pin 112 and the locking hole 211. When the user lifts the bed frame 1, the locking pin 111 is already in the unlocked state and will not interfere with the locking hole 211, but the anti-dropout pin 112 is still in the working state. Therefore, if the anti-dropout pin 112 can be inserted into the locking hole 211, it will interfere with the process of the user lifting the bed frame 1 and affect the user experience. The design that the anti-dropout pin 112 can only be inserted into the limit hole 212 can minimize the impact on the user's use while ensuring safety.

[0089] The first shape and the second shape may not only be different in shape (e.g., one is a five-pointed star and the other is a circle), but may also be different in size. For example, in one embodiment, the first shape and the second shape are both rectangular and the area of ​​the second shape is larger than the area of ​​the first shape.

[0090] In the field of children's products, rectangular pins are often used because they can withstand multi-directional loads and prevent twisting. They also have the advantages of low manufacturing cost and easy assembly. By selecting the size, the anti-drop pin 112 can enter the limit hole 212 without being engaged with the locking hole 211. This design can reduce the cost of production and assembly while ensuring the use effect, and is easy to promote.

[0091] The function of the anti-drop pin 112 is to prevent the support arm 11 from separating from the sliding slot 21, but it does not need to interfere with the insertion of the support arm 11 into the sliding slot 21. Therefore, in one embodiment, the anti-drop pin 112 is provided with a driving inclined surface 1121 at the lower edge in the height direction to drive itself out of the engagement state with the limiting hole 212.

[0092] The driving inclined surface 1121 can avoid the interference between the anti-drop pin 112 and the limiting hole 212 when the support arm 11 is inserted into the sliding groove 21. When the support arm 11 is inserted into the sliding groove 21 from top to bottom, the anti-drop pin 112 first interferes with the top of the sliding groove 21. At this time, the driving inclined surface 1121 can drive the anti-drop pin 112 to retreat into the support arm 11, so that the support arm 11 continues to move downward; when the support arm 11 moves downward until the anti-drop pin 112 is aligned with the limiting hole 212, the anti-drop pin 112 engages with the limiting hole 212. At this time, the user continues to press the support arm 11 downward, and the driving inclined surface 1121 can drive the anti-drop pin 112 to retreat into the support arm 11, so that the support arm 11 continues to move downward until the locking pin 111 engages with the first locking hole 211. At this time, the support arm 11 is at the highest middle gear.

[0093] When the support arm 11 moves downward, the anti-drop pin 112 can be unlocked by itself through the driving inclined surface 1121. When the support arm 11 moves upward, the user needs to unlock it to ensure safety. In one embodiment, the anti-drop pin 112 moves perpendicular to the height direction and has an anti-drop locking state protruding from the support arm 11. The anti-drop pin 112 is provided with an anti-drop elastic member 1122 that keeps itself in the anti-drop locking state. The anti-drop pin 112 needs to be subjected to force to overcome the anti-drop elastic member 1122 from exiting the limiting hole 212. The outer edge of the limiting hole 212 is provided with an anti-pinch chamfer 2121.

[0094] When the user needs to separate the bed frame 1 and the support leg 2, the user needs to apply force to the anti-slip pin 112 to enable the anti-slip pin 112 to exit the limiting hole 212. After the anti-slip pin 112 exits the limiting hole 212, the user continues to lift the support arm 11. At this time, the support arm 11 drives the anti-slip pin 112 upward to produce a shearing movement with the limiting hole 212, and the user also needs to use his hand to hold the position of the anti-slip pin 112 to avoid the anti-slip pin 112 from re-engaging with the limiting hole 212, which can easily cause harm to the user. The anti-pinch chamfer 2121 can effectively avoid this problem. In the illustrated technical solution, the anti-pinch chamfer 2121 also includes an avoidance area 2122 to further reduce the possibility of pinching the hand.

[0095] The unlocking of the anti-drop pin 112 is manually achieved by the user, while the locking pin 111 needs to remain unlocked during the movement of the support arm 11, which is inconvenient for the user to manually achieve. In one embodiment, the support arm 11 is provided with a lifting and locking mechanism 113 for controlling the locking pin 111, and the lifting and locking mechanism 113 includes:

[0096] The locking pin elastic member 1132 is used to drive the locking pin 111 to extend out of the support arm 11 and engage with the locking hole 211;

[0097] The guide block 1131 is slidably mounted on the support arm 11 and cooperates with the locking pin 111 through the guide slope 1133 , and is used to drive the locking pin 111 to overcome the elastic force of the locking pin elastic member 1132 and exit the locking hole 211 .

[0098] The guide block 1131 can convert its own movement into the movement of locking and exiting the locking hole 211 through the guiding slope 1133. This design can accommodate the moving parts in the support arm 11, avoid the exposure of the moving parts and avoid the gap between the fingers, thus improving safety. At the same time, referring to the technical solution shown in the figure, because the locking pin 111 enters the locking hole 211 driven by the locking pin elastic member 1132, and the locking pin 111 exits the locking hole 211 driven by the guide block 1131, the locking pin 111 itself does not need to be designed with a guiding slope, and the part of the locking pin 111 that cooperates with the locking hole 211 is a rectangular parallelepiped as a whole. This design can improve the strength of the locking and avoid the possibility of locking failure under the action of external force.

[0099] The movement of the locking pin 111 requires a guide member in addition to the driving member, and the provision of the guide member can effectively improve the stability of the movement of the locking pin 111. In one embodiment, a guide hole 1134 is provided on the guide block 1131, and a guide slope 1133 is provided on the side of the guide hole 1134 facing away from the locking hole 211. The locking pin 111 is T-shaped and includes a locking tongue 1111 and a guide seat 1112. The locking tongue 1111 passes through the guide hole 1134 and protrudes out of the support arm 11 to engage with the locking hole 211. The guide seat 1112 slides with the support arm 11 and is driven by the guide slope 1133.

[0100] The locking tongue 1111 is inserted into the guide hole 1134, which prevents foreign matter from affecting the locking tongue 1111 and ensures the stability of the locking pin 111. At the same time, the guide hole 1134 needs to be designed with a margin in the movement direction of the guide block 1131 to avoid interference with the locking tongue 1111.

[0101] In order to further enhance the user's operating experience, in one embodiment, the lifting and locking mechanism 113 also includes a driving slider 1135, which is slidably installed on the support arm 11 along the height direction. The driving slider 1135 drives the guide block 1131 to slide along the height direction through the traction rope 1136 to drive the locking pin 111 to exit the locking hole 211.

[0102] The driving slider 1135 cooperates with the traction rope 1136 to change the user's operating position. Referring to the technical solution shown in the figure, the driving slider 1135 is arranged at a position close to the bed frame 1, which can facilitate the user to combine the two actions of holding the bed frame 1 and applying force to the driving slider 1135, so that the user can change the height of the bed frame 1 while unlocking the locking pin 111. When the height is adjusted to the required position, the user can release the hand action; even if the locking pin 111 and the locking hole 211 are not aligned at this time, under the action of gravity, the bed frame 1 automatically slides down until the locking pin 111 and the locking hole 211 are aligned, and the locking pin 111 and the locking hole 211 can also complete the locking by themselves.

[0103] The locking pin 111 exits the locking hole 211 through the guide block 1131, and this action is driven by the user to apply a force, so sufficient force can be ensured. However, the locking pin 111 enters the locking hole 211 through the locking pin elastic member 1132. The locking pin elastic member 1132 not only needs the locking pin 111, but also may drive a series of components such as the guide block 1131, the traction rope 1136, and the driving slider 1135. Therefore, it is very likely that the locking failure caused by insufficient driving force will occur. In order to avoid this problem, in one embodiment, the lifting and locking mechanism 113 also includes:

[0104] The guide block elastic member 1137 is installed between the guide block 1131 and the support arm 11. The guide block 1131 drives the locking pin 111 to overcome the elastic force of the guide block elastic member 1137.

[0105] The driving slider elastic member 1138 is force-installed between the driving slider 1135 and the support arm 11 . The driving slider 1135 drives the guide block 1131 to overcome the elastic force of the driving slider elastic member 1138 .

[0106] With the cooperation of the guide block elastic part 1137, the driving slider elastic part 1138 and the locking pin elastic part 1132, except for the traction rope 1136, each component has its own reset driving elastic part, and the elastic force of the guide block elastic part 1137, the driving slider elastic part 1138 and the locking pin elastic part 1132 is directed in the direction of the locking pin 111 entering the locking hole 211, thereby effectively ensuring the safety of locking.

[0107] While ensuring the driving force, the stability of the movement of each component must also be ensured. In one embodiment, the support arm 11 is provided with:

[0108] The first guide groove 1141 is used to install the guide block 1131. The guide block elastic member 1137 is a compression spring and presses against the first guide groove 1141 and the top of the guide block 1131;

[0109] The second guide groove 1142 is provided below the first guide groove 1141 and is used for installing the locking pin 111. The guide hole 1134 of the guide block 1131 extends into the second guide groove 1142.

[0110] The third guide groove 1143 is provided below the second guide groove 1142 and is used for installing the anti-drop pin 112 .

[0111] The first guide groove 1141 is used to ensure the movement effect of the guide block 1131, the second guide groove 1142 is used to ensure the movement effect of the locking pin 111, and the third guide groove 1143 is used to ensure the movement effect of the anti-dropping pin 112. Together with the elastic parts, the locking process can be ensured to be stable and reliable.

[0112] In the technical solution shown in the figure, the support arm 11 is actually composed of multiple plates, including a first plate 1151 and a second plate 1152 that are interlocked, and a shell 1153 that accommodates the first plate 1151 and the second plate 1152. The first plate 1151 and the second plate 1152 are interlocked to accommodate the lifting locking mechanism 113. The locking pin 111 and the anti-slip pin 112 protruding out of the support arm 11 mentioned in the text refer to the locking pin 111 and the anti-slip pin 112 passing through the corresponding holes in the shell 1153.

[0113] refer to Figures 11 to 14 In one embodiment, the bed frame 1 is provided with an anti-sway mechanism 3, and the anti-sway mechanism 3 includes:

[0114] A guide groove 32, mounted on the bed frame 1 and forming a guide path along which the rotation axis extends;

[0115] The positioning arm 33 is slidably installed in the guide groove 32 and has a U-shaped bayonet 331 at one end facing the sliding groove 21 . When the bayonet 331 is engaged with the sliding groove 21 , the positioning arm 33 is in a positioning state to prevent the bed frame 1 from swinging relative to the sliding groove 21 .

[0116] The positioning arm 33 can be retracted into the guide groove 32 to release the bed frame 1 from swinging relative to the sliding groove 21, and can also extend out of the guide groove 32 to engage with the sliding groove 21 using the bayonet 331 to prevent the bed frame 1 from swinging relative to the sliding groove 21. In the scheme shown in the figure, the guide groove 32 is installed on the bed bottom plate 31, and the bed bottom plate 31 is connected to the bed frame 1. The anti-sway mechanism 3 is installed at both ends of the bed bottom plate 31, and the bayonet 331 of the positioning arm 33 cooperates with the lower end of the sliding groove 21 to provide a torque to prevent the bed frame 1 from swinging relative to the sliding groove 21.

[0117] A positioning block 34 is provided between the positioning arm 33 and the guide groove 32 to limit the relative position of the two. The locking block is slidably installed in the positioning hole of the guide groove 32. The positioning arm 33 is provided with an I-shaped groove 332 for releasing the positioning block 34. When the positioning block 34 is at both ends of the I-shaped groove 332, the positioning arm 33 is respectively located in a positioning state and a state of being retracted into the guide groove 32. The bottom of the positioning block 34 is enlarged and just fits the two ends of the I-shaped groove 332. Therefore, the movement of the positioning arm 33 can only be released when the positioning block 34 moves toward the bed bottom plate 31 to achieve the bottom of the positioning block 34 and the I-shaped groove 332 are offset. At the same time, a compression spring (not shown) is provided between the positioning block 34 and the bed bottom plate 31 to keep the bottom of the positioning block 34 engaged with the I-shaped groove 332. A positioning chamfer 341 is also provided on one side of the bottom of the positioning block 34. When the positioning arm 33 moves toward the support arm 11, the I-shaped groove 332 can automatically unlock the positioning block 34, which is convenient for the user's operation.

[0118] refer to Figure 5 , Fig.10 and Fig.15 In one embodiment, in order to further improve the spatial performance of the children's bed during storage and transportation, one end of the support arm 11 is rotatably mounted on the bed frame 1, and a limit structure 12 is provided between the support arm 11 and the bed frame 1 to prevent the support arm 11 from rotating without restriction. In addition to the upright state shown in the figure, the two support arms 11 also have a relatively flat state. At this time, the two support arms 11 are accommodated in the bed frame 1 and are in the same plane as the bed frame 1. With the flexible bed cloth, the overall planar folding of the bed frame 1 structure can be achieved, thereby providing better storage and transportation performance.

[0119] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned 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. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0120] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A children's bed, characterized in that: The invention comprises a bed frame and supporting legs, wherein supporting arms are rotatably mounted on two opposite sides of the bed frame, and the supporting legs have two sets, each set of supporting legs comprises: a first supporting leg and a second supporting leg, the top ends of the first supporting leg and the second supporting leg being rotatably matched around a rotation axis through a first joint and a second joint, the first joint and the second joint forming a mounting cavity together; a locking ratchet located in the mounting cavity and capable of sliding along the rotation axis, the locking ratchet having a locking position simultaneously engaged with both the first joint and the second joint, and a releasing position engaged with only one of the first joint and the second joint; a driving assembly comprising a ratchet elastic member for keeping the locking ratchet in the locking position and a driving member for driving the locking ratchet into the releasing position; Each set of supporting legs is respectively provided with a sliding groove, and the supporting arm is movably inserted into the sliding groove of the corresponding set of supporting legs, and the insertion depth is adjustable. Each supporting arm has a working state and a folded state according to the positional relationship with the bed frame and the corresponding supporting legs; in the working state, the supporting arm is perpendicular to the plane where the bed frame is located and inserted into the sliding groove; in the folded state, the supporting arm is separated from the sliding groove and is accommodated in the bed frame and is in the same plane as the bed frame, and cooperates with the flexible bed cloth to realize the overall plane folding of the bed frame; The bed frame is provided with an anti-sway mechanism, and the anti-sway mechanism comprises: a guide groove mounted on the bed frame and forming a guide path along which the rotation axis extends; The positioning arm is slidably installed in the guide groove, and a U-shaped bayonet is provided at one end facing the sliding groove. When the bayonet is engaged with the sliding groove, the positioning arm is in a positioning state to prevent the bed frame from swinging relative to the sliding groove.

2. The children's bed according to claim 1, characterized in that: The first joint includes a first disk surrounding the rotation axis, and the second joint includes a second disk surrounding the rotation axis. The first disk and the second disk are close to each other on the rotation axis to enclose the installation cavity. A first locking groove is provided on the inner wall of the first disk, and a second locking groove is provided on the inner wall of the second disk. The first locking groove and the second locking groove can engage with the locking ratchet.

3. The children's bed according to claim 2, characterized in that: The first support leg and the second support leg have a folded state in which they are close to each other and a working state in which they are rotated and separated from each other around the rotation axis; In the working state, the first locking groove and the second locking groove are aligned, and the locking ratchet can slide in the first locking groove and the second locking groove to a locking position, in which the locking ratchet is simultaneously in the first locking groove and the second locking groove.

4. The children's bed according to claim 3, characterized in that: A plurality of locking tongues are provided on the outer peripheral surface of the locking ratchet, a plurality of the first locking grooves and the second locking grooves are provided, and when the first joint and the second joint are in the working state, at least one pair of the first locking grooves and the second locking grooves are aligned, and the locking tongue is simultaneously in the aligned first locking grooves and the second locking grooves.

5. The children's bed according to claim 4, characterized in that: The driving member comprises: A push plate, slidably mounted in the mounting cavity and used to drive the locking ratchet to slide along the rotation axis; A button is used to drive the push plate, wherein the button directly abuts against the push plate or abuts against the push plate through a linkage rod.

6. The children's bed according to claim 5, characterized in that: The support foot further comprises a shielding cover arranged at the first joint and the second joint, the button is slidably mounted on the outside of the shielding cover, the locking ratchet is arranged on the inside of the shielding cover, and the linkage rod passes through the shielding cover and is linked to press between the push plate and the button; An adapting hole for installing an expansion device is provided on a side of the shielding cover facing away from the button, and the rotation axis passes through the adapting hole.

7. The children's bed according to claim 1, characterized in that: The sliding slot is provided with a rotating pivot, and the rotating pivot is installed on the first joint and / or the second joint.

8. The children's bed according to claim 1, characterized in that: The groove wall of the sliding groove is provided with a limit hole and a plurality of locking holes arranged in sequence along the height direction; the support arm is provided with an independently controlled locking pin and an anti-drop pin; The support arm has multiple intermediate gears and extreme gears that rise relative to the sliding groove. At each intermediate gear, the locking pin is engaged with the corresponding locking hole. At the extreme gear, the locking pin passes over all the locking holes along the rising path, and the anti-drop pin is engaged with the limit hole.

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