CN110946434A

CN110946434A - Supporting leg and crib

Info

Publication number: CN110946434A
Application number: CN201911054208.0A
Authority: CN
Inventors: 丁斌; 苏长明; 赵国松
Original assignee: Zhejiang Chenhui Yingbao Children Products Co ltd
Current assignee: Zhejiang Chenhui Yingbao Children Products Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-04-03

Abstract

The application discloses supporting legs and crib, wherein the supporting legs includes: the top ends of the first support leg and the second support leg are in rotating fit around a rotating axis through a first joint and a second joint, and the first joint and the second joint surround to form a mounting cavity; a locking ratchet located within the mounting cavity and slidable along the rotational axis, the locking ratchet having a locking position that simultaneously engages the first joint and the second joint; a drive assembly including a ratchet spring to retain the locking ratchet in a locking position and a driver to drive the locking ratchet out of the locking position. According to the technical scheme disclosed by the application, the supporting legs can be unfolded and folded through mutual rotation of the first joint and the second joint, so that the double requirements of large volume and small volume in storage and transportation of similar products are met; the locking ratchet can guarantee the stability of supporting legs spatial state, has guaranteed the security when improving the convenience.

Description

Supporting leg and crib

Technical Field

The application relates to the field of children products, in particular to supporting legs and a children bed.

Background

A child's bed is a common product for children. Because the parents have different heights and changeable use scenes, more and more cribs are added with the height adjusting function for the convenience of the parents to use.

For example, chinese patent publication No. CN209346495U discloses a height adjustable cradle, which belongs to the technical field of furniture design and manufacture, and comprises a cradle main body and a support frame; the support frames are arranged at two ends of the crib main body; the support frame is connected with the baby crib main body through a locking device; the locking device comprises a rear fixed shell arranged on the baby crib main body and a front fixed shell arranged on the support frame. The utility model provides a supporting frame of a baby cradle with adjustable height, which can support the main body of the baby cradle and can swing the main body of the baby cradle or lock the main body of the baby cradle through a locking device; meanwhile, the height of the baby crib main body is convenient to adjust. However, in the technical scheme, if the user needs to store the child bed, the main body and the support frame are relatively complicated to disassemble; in the use process, the position of adjusting the height is easy to cause the clearance of the clamping hands. There is still room for improvement in convenience and safety.

Meanwhile, the inventor also finds that the child bed product in the related technology is large in size and inconvenient in the storage and transportation process, improves the logistics distribution cost, and causes inconvenience to storage and transportation of users in the use process.

Disclosure of Invention

For the lift of the realization crib of safety, improve the convenience, guarantee the security when making things convenient for the warehousing and transportation, the application discloses the supporting legs includes:

the top ends of the first supporting leg and the second supporting leg are in rotating fit around a rotating axis through a first joint and a second joint, and the first joint and the second joint surround to form a mounting cavity;

a locking ratchet within the mounting cavity and slidable along the axis of rotation, the locking ratchet having a locking position that engages both the first and second joints simultaneously and a release position that engages only one;

a drive assembly including a ratchet spring to retain the locking ratchet in a locked position and a driver to drive the locking ratchet into a release position.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, first joint includes around the first disc of rotation axis, the second joint includes around the second disc of rotation axis, first disc and second disc are in draw close each other in order to enclose formation on the rotation axis the installation cavity, be equipped with first locking groove on the inner wall of first disc, be equipped with the second locking groove on the inner wall of second disc, first locking groove with the second locking groove can with locking ratchet intermeshing.

Optionally, the first support leg and the second support leg have a folding state in which they are mutually folded and a working state in which they are mutually rotated around the rotation axis to be separated;

in an operative state, the first and second lock slots are aligned, and the locking ratchet is slidable to a locked position within the first and second lock slots; the locking ratchet is simultaneously positioned in the first locking groove and the second locking groove under the locking position.

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

Optionally, the driving member includes:

the push plate is slidably mounted in the mounting cavity and is used for driving the locking ratchet to slide along the rotating axis;

and the button is used for driving the push plate and directly abuts against the push plate or abuts against the push plate through a linkage rod.

Optionally, the supporting leg further includes a shielding cover covering the first joint and the second joint, the button is slidably mounted on the outer side of the shielding cover, the locking ratchet is disposed on the inner side of the shielding cover, and the linkage rod penetrates through the shielding cover and is in linkage contact with and pressed between the push plate and the button.

Optionally, a side of the shielding cover facing away from the button is provided with an adapter hole for mounting an expansion device, and the rotation axis penetrates through the adapter hole.

The application also discloses crib, supporting legs among bed frame and the above-mentioned technical scheme, the double-phase offside of bed frame rotates respectively and installs the support arm, the supporting legs has two sets, installs the sliding tray on each set of supporting legs respectively, the support arm activity is pegged graft in the sliding tray that corresponds one set of supporting legs, and the grafting degree of depth is adjustable.

Optionally, a rotating pivot is provided on the sliding slot, the rotating pivot is mounted on the first joint and/or the second joint, and each support arm has:

the working state that the bed frame is vertical to the plane of the bed frame and is inserted into the sliding groove; and

is parallel to the plane of the bed frame and is separated from the folding state of the sliding groove.

Optionally, a groove wall of the sliding groove is provided with a limiting hole and a plurality of locking holes sequentially arranged along the height direction;

the bed frame is connected with a supporting arm, the supporting arm is inserted into the sliding groove, and the supporting arm is provided with a locking pin and an anti-falling pin which are independently controlled;

the supporting arm is provided with a plurality of middle gears and limit gears which rise relative to the sliding groove, the locking pins are clamped with the corresponding locking holes under each middle gear, and the locking pins cross all the locking holes along a rising path under the limit gears, and are clamped with the limiting holes.

Optionally, be equipped with on the bed frame and prevent putting the mechanism, prevent putting the mechanism and include:

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

the positioning arm is slidably mounted in the guide groove, a U-shaped bayonet is arranged at one end of the sliding groove, and when the bayonet is clamped with the sliding groove, the positioning arm is in a positioning state for preventing the bed frame from swinging relative to the sliding groove.

The technical scheme that this application discloses through the mutual rotation of first joint and second joint, can realize the expansion and fold up of supporting legs, consequently satisfied the dual demand of like product needs great volume and less volume when storing up and transporting simultaneously to locking the ratchet can guarantee the stability of supporting legs spatial state, has guaranteed the security when improving the convenience.

Specific advantageous technical effects will be further explained in conjunction with specific structures or steps in the detailed description.

Drawings

FIG. 1 is a schematic view of a support leg according to an embodiment;

FIG. 2 is an exploded view of the support leg of FIG. 1;

FIG. 3 is a schematic view of an application of the leg of FIG. 1;

FIG. 4 is a schematic view of a cot in one embodiment;

FIG. 5 is an exploded view of the cot of FIG. 4 (with portions of the support legs omitted);

FIG. 6 is an enlarged view of the point A in FIG. 5;

FIG. 7 is an enlarged view of the point B in FIG. 5;

FIG. 8 is an enlarged view of FIG. 5 at C;

FIG. 9 is an enlarged view of FIG. 5 at D;

FIG. 10 is an enlarged view of E in FIG. 5;

FIG. 11 is a bottom schematic view of the cot of FIG. 4;

FIG. 12 is a schematic view of an anti-sway mechanism;

FIG. 13 is a schematic view of the anti-sway mechanism of FIG. 12 with the guide groove omitted;

FIG. 14 is a schematic view of the positioning block of FIG. 12;

figure 15 is a schematic view of a limiting structure in the support arm.

The reference numerals in the figures are illustrated as follows:

1. a bed frame; 11. a support arm; 111. a locking pin; 1111. a latch bolt; 1112. a guide seat; 112. the anti-drop pin; 1121. a drive ramp; 1122. an anti-drop elastic member; 113. a lift locking mechanism; 1131. a guide block; 1132. a locking pin elastic member; 1133. a guide ramp; 1134. a guide hole; 1135. driving the slide block; 1136. A traction cable; 1137. a guide block elastic member; 1138. a driving slider elastic member; 1141. a first guide groove; 1142. a second guide groove; 1143. a third guide groove; 1151. a first plate member; 1152. a second plate member; 1153. a housing; 12. a limiting structure;

2. supporting legs; 21. a sliding groove; 211. a locking hole; 212. a limiting hole; 2121. anti-pinch chamfering; 2122. An avoidance zone; 22. a second joint; 221. a second leg; 222. a second disc; 23. a first joint; 231. a first leg; 232. a first disc; 233. a first locking groove; 24. a locking ratchet; 241. locking teeth; 25. a drive assembly; 251. a ratchet elastic member; 252. pushing the plate; 2521. a guide tooth; 253. a button; 254. a linkage rod; 26. a shielding cover; 261. an adapter hole; 27. a transverse connecting rod;

3. a swing prevention mechanism; 31. a bed bottom plate; 32. a guide groove; 33. a positioning arm; 331. a bayonet; 332. a I-shaped groove; 34. positioning blocks; 341. and (6) positioning and chamfering.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

With reference to fig. 1 to 2, the present application discloses a support foot 2 comprising:

the top ends of the first supporting leg 231 and the second supporting leg 221 are rotationally matched around a rotating axis (not numbered) through a first joint 23 and a second joint 22, and the first joint 23 and the second joint 22 surround to form a mounting cavity (not numbered);

a locking ratchet 24 located in the installation cavity and slidable along the rotational axis, the locking ratchet 24 having a locking position that engages both the first joint 23 and the second joint 22 at the same time and a release position that engages only one;

the driving assembly 25 includes a ratchet spring 251 for holding the locking ratchet 24 at the locking position and a driving member for driving the locking ratchet 24 into the unlocking position.

The mutual rotation of the first joint 23 and the second joint 22 in this embodiment enables the unfolding and folding of the support foot 2. When the locking ratchet 24 is in the locking position, the space state of the supporting leg 2 is kept stable, and the use requirements of users are met by installing accessories such as a crib, a dining chair, a child seat and the like on the supporting leg 2; when the driving assembly 25 drives the locking ratchet 24 to exit from the locking position, the supporting leg 2 can adjust the spatial state, thereby satisfying multiple use environments, such as when a smaller volume is required for storage and transportation, when the height of the supporting leg is adjusted by adjusting the included angle between the first leg 231 and the second leg 221, and the like. The technical scheme in the embodiment can facilitate the adjustment of a user according to actual requirements, and improves convenience.

Meanwhile, the technical scheme in the embodiment also ensures the safety. The installation cavity for installing the locking ratchet 24 is formed by surrounding the first joint 23 and the second joint 22, so that the movable part can be accommodated in a relatively closed space, and the possibility of clamping a hand is avoided.

In a specific matching relationship between the first joint 23 and the second joint 22, in an embodiment, the first joint 23 includes a first disc 232 surrounding the rotation axis, the second joint 22 includes a second disc 222 surrounding the rotation axis, the first disc 232 and the second disc 222 are close to each other on the rotation axis to form a mounting cavity, a first locking groove 233 is provided on an inner wall of the first disc 232, a second locking groove (not shown) is provided on an inner wall of the second disc 222, and the first locking groove 233 and the second locking groove can be engaged with the locking ratchet 24.

The first joint 23 and the second joint 22 need to be rotated with respect to each other, the locking ratchet 24 is housed in the mounting cavity, and the shape of the disc is reasonably preferred. Wherein the shape of the disc mainly refers to the part surrounding the axis of rotation for forming the mounting cavity. The first and

second disks

232 and 222 are provided to form a part of the installation cavity, respectively, and the first and

second disks

232 and 222 cannot be rotated with respect to each other centering on the rotation axis by the locking ratchet 24 simultaneously engaged with the first and second locking

grooves

233 and 222, thereby locking the spatial positions of the first and

second knuckles

23 and 22.

In the working principle of the locking ratchet 24, in an embodiment, the first leg 231 and the second leg 221 have a collapsed state in which they are close to each other and an operative state in which they are rotated away from each other about the rotation axis; in the operating 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 simultaneously in the first locking groove 233 and the second locking groove.

The first locking groove 233 is rotated with the rotation of the first knuckle 23, and correspondingly, the second locking groove is rotated with the rotation of the second knuckle 22, when one of the first locking grooves 233 and one of the second locking grooves are aligned, the locking ratchet 24 has a basis for engaging both, and 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, thereby realizing locking.

In the specific arrangement of the locking ratchet 24, in an embodiment, a plurality of locking teeth 241 are arranged on the outer peripheral surface of the locking ratchet 24, a plurality of first locking grooves 233 and second locking grooves are arranged, the first knuckle 23 and the second knuckle 22 are in an operating 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 positioned in the aligned first locking grooves 233 and the aligned second locking grooves.

The locking ratchet 24 restricts relative rotation of the first joint 23 and the second joint 22 by the locking tooth 241. As shown, the locking teeth 241 are disposed in the radial direction of the locking ratchet 24 and have a square cross section, thereby increasing the locking torque. When the locking teeth 241 are provided in plural, the number of the first locking grooves 233 and the second locking grooves which are aligned needs to be equal to or greater than the number of the locking teeth 241 to ensure the movement of the locking ratchet 24, otherwise the groove walls of the first locking grooves 233 or the second locking grooves which are not aligned interfere with the movement of the locking ratchet 24.

In terms of specific selection of the number, in an embodiment, the number of the locking teeth 241 is N, the number of the first locking grooves 233 and the second locking grooves is M, and M is greater than N, the outer circumference of the push plate 252 is provided with M guide teeth 2521, and the guide teeth 2521 can slide in the first locking grooves 233 or the second locking grooves.

The locking teeth 241, the first locking grooves 233 and the second locking grooves are increased in number, so that more locking positions can be provided, and more possibility is provided for the change of the spatial form of the support leg; accordingly, however, the increase in the number of the locking teeth 241, the first locking grooves 233 and the second locking grooves results in the shortening of the interval between the adjacent locking teeth 241 and the shortening of the interval between the adjacent first locking grooves 233 and the interval between the adjacent second locking grooves, resulting in the deterioration of the strength of the locking teeth 241, the first locking grooves 233 and the second locking grooves. Thus, the support legs shown in the figures are intended to fit a child's bed, and the number of locking teeth 241 is preferably 5 and the number of first 233 and second 233 locking grooves is preferably 7, depending on the design requirements of the product. The corresponding push plate 252 also guides its movement by the guide teeth 2521 for better driving the locking ratchet 24, and the number of the guide teeth 2521 is preferably 7 corresponding to the number of the first and second locking

grooves

233 and 233.

In the arrangement of the driving member, in one embodiment, the driving member includes:

a push plate 252 slidably mounted in the mounting cavity and for driving the locking ratchet 24 to slide along the rotation axis;

a button 253 provided outside the support leg;

and a linkage 254 which is pressed between the push plate 252 and the button 253.

As shown, the ratchet elastic member 251 is a compression spring pressed between the first disk 232 and the locking ratchet 24 for holding the locking ratchet 24 at the locking position. The ratchet elastic member 251 is wound around the rotation axis, and the design can improve the stability of the ratchet elastic member 251; in other designs, the ratchet elastic member 251 may be distributed on one side of the rotation axis, but this design may cause the movement of the locking ratchet 24 along the rotation axis to be unstable, and easily cause jamming, and a corresponding structure is required to optimize the movement of the locking ratchet 24.

Accordingly, the push plate 252 can uniformly apply the force of the force button 253 to the locking ratchet 24, and the clamping stagnation caused by uneven force is avoided. The linkage rods 254 are four in the technical scheme of the figure, and the number of the linkage rods in actual products can be changed mainly in consideration of the stability of the transmission moment and the manufacturing cost.

In the arrangement that the button 253 is installed and adapted, in one embodiment, the supporting foot 2 further comprises a shielding cover 26 covering the first joint 23 and the second joint 22, the button 253 is slidably installed on the outer side of the shielding cover 26, the locking ratchet 24 is arranged on the inner side of the shielding cover 26, and the linkage rod 254 penetrates through the shielding cover 26 and is linked and pressed between the push plate 252 and the button 253.

The first shielding cover 26 can accommodate the driving part, so that the assembly installation is convenient; secondly, the possible hand clamping gap in the mutual rotation process of the first joint 23 and the second joint 22 is shielded, and the safety is improved; thirdly, foreign matters are prevented from entering between the first joint 23 and the second joint 22, and stability is guaranteed. As shown in the figure, the shielding cover 26 is installed with the button 253 through a one-way buckle, and the button 253 is prevented from being separated from the shielding cover 26 under the action of the linkage rod 254.

In one embodiment, the side of the shield cover 26 facing away from the button 253 is provided with an adapter hole 261 for mounting the expansion device, and the rotation axis penetrates through the adapter hole 261.

The adaptor hole 261 is used for mounting an extension device, such as a cot as mentioned hereinafter. In practice, the extension device may be a dining chair, a child seat, or the like. The adapter hole 261 provides a standard interface for ease of installation and adjustment. The rotation axis as the hinge position of the first leg 231 and the second leg 221 has better mechanical properties, so that the fitting opening is reasonably preferred at this time. The fitting hole 261 plays a guiding role in view of the transmission of the force actually applied, and the first joint 23 and the second joint 22 are the components actually applied with the force.

In the application of the support feet 2, referring to fig. 3, the support feet 2 can be connected by a transverse link 27 to form a three-dimensional frame to bear the load without affecting the unfolding and folding of the support feet 2.

With reference to fig. 4 to 15, the present application also discloses a children's bed, which comprises a bed frame 1 and the supporting legs 2 in the above technical solutions, wherein a sliding slot 21 is provided with a rotating pivot (not shown), the rotating pivot is installed on a first joint 23 and/or a second joint 22, and each supporting arm 11 has:

the working state that the bed frame is vertical to the plane of the bed frame 1 and is inserted into the sliding groove 21; and

is parallel to the plane of the bed frame 1 and is separated from the folding state of the sliding groove 21.

In the embodiment shown in the figure, the first joint 23 and the second joint 22 are provided with an adapter hole 261 avoiding the rotation axis at their surrounding portions, and the slide groove 21 is rotatably mounted in the adapter hole 261 by a rotary pivot. The pivot may be formed by extending the material of the sliding groove 21 itself, or may be replaced with a fastener.

In one embodiment, the supporting leg 2 is fixed with a sliding groove 21, and a groove wall of the sliding groove 21 is provided with a limiting hole 212 and a plurality of locking holes 211 sequentially arranged along the height direction;

the bed frame 1 is connected with a supporting arm 11, the supporting arm 11 is inserted in the sliding groove 21, and the supporting arm 11 is provided with a locking pin 111 and an anti-falling pin 112 which are independently controlled;

the support arm 11 has a plurality of intermediate positions where the lock pins 111 are engaged with the corresponding lock holes 211 and a plurality of limit positions where the lock pins 111 pass through all the lock holes 211 along the ascending path and the separation preventing pins 112 are engaged with the stopper holes 212, which are raised relative to the slide groove 21.

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, and during the operation, the supporting arm 11 may be completely separated from the sliding slot 21 due to the reason of too large lifting force or misoperation, and at this time, if the child is still in the child bed supported by the bed frame 1, a safety hazard may be generated. According to the technical scheme disclosed by the embodiment, the locking pin 111 and the anti-falling pin 112 are arranged, so that the height of the bed frame 1 can be adjusted, meanwhile, the situation that the bed frame 1 is integrally separated from the supporting legs 2 due to misoperation can be avoided, meanwhile, the movable part for adjusting the height is completely accommodated in the sliding groove 21, a user is not easy to contact with a child, the possibility of hand clamping gaps is avoided, and the safety is improved; in the use process, the user can unlock the anti-drop pin 112 to completely disassemble the bed frame 1 and the supporting legs 2, the operation is convenient, and the adaptability is improved.

After the user unlocks the locking pins 111, the anti-falling pins 112 cannot change the working state along with the unlocking of the locking pins 111, when the user lifts the bed frame 1 to the limit gear, all the locking pins 111 already pass through the positions of the locking holes 211, and the anti-falling pins 112 can be automatically clamped into the limit holes 212, so that the situation that the support arm 11 and the sliding groove 21 are directly separated is avoided. If the user still needs to separate the support arm 11 from the sliding groove 21, the user only needs to manually unlock the anti-slip pin 112 to conveniently separate the support arm 11 from the sliding groove 21, i.e. separate the bed frame 1 and the support foot 2, so as to facilitate storage and transportation.

In the operation process, a user hopes to reduce the operation steps as much as possible while ensuring the safety so as to facilitate the 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 ends of the entire row of locking holes 211; the locking pin 111 and the locking hole 211 are complementary in engaging shape and have a first shape, and the anti-slip-off pin 112 and the stopper hole 212 are complementary in engaging shape and have a second shape.

The locking pin 111 and the anti-slip pin 112 having different shapes can avoid interference of the anti-slip pin 112 and the locking hole 211. When the user lifts up the bed frame 1, the lock pin 111 is already in the unlocked state and does not interfere with the lock hole 211, but the separation preventing pin 112 is still in the operating state. Therefore, if the anti-slip pin 112 can be snapped into the locking hole 211, it will interfere with the process of lifting the bed frame 1 by the user, and will affect the user experience. The anti-slip pin 112 can only be clamped into the limiting hole 212, so that the use influence on a user is reduced to the minimum while the safety is ensured.

The first shape and the second shape may not only differ in shape, (e.g. one being a five-pointed star, one being a circle) but also differ in size. For example, in one embodiment, the first shape and the second shape are both oblong and the area of the second shape is larger than the area of the first shape.

In children's product field, rectangular pin body is often used because its characteristic that can bear multidirectional load and can prevent to twist reverse, still has low in manufacturing cost simultaneously, convenient assembling's advantage. Through the selection of the size, the anti-drop pin 112 can enter the limiting hole 212 without being clamped with the locking hole 211. The design can reduce the production and assembly costs and facilitate popularization while ensuring the use effect.

The anti-slip pin 112 functions to prevent the separation of the support arm 11 from the slide groove 21, but does not require an intervention for the insertion of the support arm 11 into the slide groove 21. Therefore, in an embodiment, the lower edge of the anti-slip pin 112 in the height direction is provided with a driving inclined surface 1121 for driving itself to withdraw from the engagement with the limiting hole 212.

The driving inclined surface 1121 can prevent the anti-slip pin 112 from interfering with the stopper hole 212 when the support arm 11 is inserted into the slide groove 21. When the supporting arm 11 is inserted into the sliding slot 21 from top to bottom, the anti-slip pin 112 first interferes with the top of the sliding slot 21, and at this time, the driving inclined surface 1121 can drive the anti-slip pin 112 to retreat into the supporting arm 11, so that the supporting arm 11 continues to descend; when the supporting arm 11 moves downward until the anti-slip pin 112 is aligned with the limiting hole 212, the anti-slip pin 112 is engaged with the limiting hole 212, and at this time, the user continues to press down the supporting arm 11 with force, and the driving inclined surface 1121 can drive the anti-slip pin 112 to return back into the supporting arm 11, so that the supporting arm 11 continues to move downward until the locking pin 111 is engaged with the first locking hole 211, and at this time, the supporting arm 11 is located at the middle position with the highest height.

The anti-slip pin 112 can be unlocked by the driving inclined surface 1121 when the support arm 11 moves downward, and the user is required to unlock the support arm 11 to ensure safety when the support arm 11 moves upward. In one embodiment, the anti-slip pin 112 moves perpendicular to the height direction and has an anti-slip locking state protruding out of the supporting arm 11, the anti-slip pin 112 has an anti-slip elastic member 1122 for keeping itself in the anti-slip locking state, the anti-slip pin 112 needs to be forced to exit the limiting hole 212 by overcoming the anti-slip elastic member 1122, and the outer edge of the limiting hole 212 is provided with an anti-pinch chamfer 2121.

When the user needs to separate the bed frame 1 and the supporting legs 2, the user needs to apply acting 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 stopper hole 212, the user continues to lift the support arm 11. At this time, the supporting arm 11 drives the anti-slip pin 112 to move upward to generate the shearing motion of the limiting hole 212, and the user needs to keep the position of the anti-slip pin 112 by hand to prevent the anti-slip pin 112 from being re-engaged with the limiting hole 212, so that the user is easily injured. Prevent tong chamfer 2121 and can effectively avoid this problem, in the technical scheme that illustrates, prevent tong chamfer 2121 still includes one and dodges district 2122, further reduces the possibility of tong.

The unlocking of the anti-slip pin 112 is manually performed by the user, which is inconvenient, since the locking pin 111 needs to be continuously maintained in the unlocked state during the movement of the support arm 11. In one embodiment, the supporting arm 11 is provided with a lift locking mechanism 113 for controlling the locking pin 111, and the lift locking mechanism 113 includes:

a locking pin elastic member 1132 for driving the locking pin 111 to protrude out of the support arm 11 and to be engaged with the locking hole 211;

and a guide block 1131 slidably mounted on the support arm 11 to cooperate with the locking pin 111 through a guide slope 1133, for driving the locking pin 111 to exit the locking hole 211 against the elastic force of the locking pin elastic member 1132.

The guide block 1131 can convert the movement of itself into the movement of locking out of the locking hole 211 through the guide inclined surface 1133, and the design can accommodate the moving part in the support arm 11, thereby avoiding the exposure of the moving part and avoiding the hand clamping gap, and improving the safety. Referring to the technical scheme shown in the figure, because the locking pin 111 enters the locking hole 211 and is driven by the locking pin elastic member 1132, and the locking pin 111 exits the locking hole 211 and is driven by the guide block 1131, the locking pin 111 does not need to be designed with a guide slope, and the whole part of the locking pin 111 matched with the locking hole 211 is a cuboid.

The movement of the locking pin 111 requires a guide member in addition to the driving member, and the guide member is provided to effectively improve the stability of the movement of the locking pin 111. In one embodiment, the guide block 1131 is provided with a guide hole 1134, the guide inclined surface 1133 is provided on a 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 penetrates through the guide hole 1134 and protrudes out of the support arm 11 to be engaged with the locking hole 211, and the guide seat 1112 is slidably engaged with the support arm 11 and is driven by the guide inclined surface 1133.

Lock tongue 1111 passes through guide hole 1134, has avoided the influence of foreign matter to lock tongue 1111, has guaranteed the stability of locking pin 111 action. Meanwhile, guide hole 1134 requires a design margin in the moving direction of guide block 1131 to avoid interference with latch 1111.

To further enhance the user's operational experience, in one embodiment, the lift lock mechanism 113 further includes a drive slider 1135, the drive slider 1135 is slidably mounted on the support arm 11 in the height direction, and the drive slider 1135 drives the guide block 1131 to slide in the height direction via a pull cable 1136 to drive the locking pin 111 out of the locking hole 211.

The drive slide 1135, in cooperation with the pull cable 1136, can change the user's operating position. Referring to the technical scheme shown in the figure, the driving slider 1135 is arranged at a position close to the bed frame 1, so that a user can conveniently combine the two actions of holding the bed frame 1 and applying acting force to the driving slider 1135, the user can conveniently change the height of the bed frame 1 while unlocking the locking pin 111, and after the position is adjusted to a required position, the user can release the hand action; even if the locking pins 111 and the locking holes 211 are not aligned at this time, the bed frame 1 automatically slides down to the state that the locking pins 111 and the locking holes 211 are aligned under the action of gravity, and then the locking pins 111 and the locking holes 211 can automatically complete locking.

The locking pin 111 is driven out of the locking hole 211 by the guide block 1131, which is actuated by the user applying a force, so that a sufficient force can be ensured, but the locking pin 111 is driven into the locking hole 211 by the locking pin elastic member 1132, and 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 cable 1136, and the drive slider 1135, so that a locking failure condition caused by insufficient driving force may possibly occur. To avoid this problem, in one embodiment, the lift lock mechanism 113 further includes:

a guide block elastic member 1137 force-fitted between the guide block 1131 and the support arm 11, wherein the guide block 1131 needs to overcome the elastic force of the guide block elastic member 1137 to drive the locking pin 111;

the driving slider elastic member 1138 is installed between the driving slider 1135 and the supporting arm 11 under stress, and the driving slider 1135 drives the guiding block 1131 to overcome the elastic force of the driving slider elastic member 1138.

Under the cooperation of guide block elastic component 1137, drive slider elastic component 1138 and locking pin elastic component 1132, except that towline 1136, each part all has the drive elastic component that resets of self, and the spring action direction of guide block elastic component 1137, drive slider elastic component 1138 and locking pin elastic component 1132 is the direction that locking pin 111 got into locking hole 211, consequently can effectively guarantee the security of locking.

While ensuring the driving force, the stability of the movement of the parts is ensured, and in one embodiment, the supporting arm 11 is provided with:

the first guide groove 1141 is used for installing the guide block 1131, and the guide block elastic member 1137 is a pressure spring and is pressed against the top of the first guide groove 1141 and the top of the guide block 1131;

a second guide groove 1142 opened below the first guide groove 1141 for mounting the locking pin 111, the guide hole 1134 of the guide block 1131 extending into the second guide groove 1142;

and a third guide groove 1143 opened below the second guide groove 1142 and to which the separation preventing pin 112 is mounted.

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-drop pin 112, and the locking process can be ensured to be stable and reliable by matching with each elastic member.

In the illustrated embodiment, support arm 11 is actually formed of a plurality of plates, including first and

second plates

1151 and 1152 that are coupled to each other and a housing 1153 that houses first and

second plates

1151 and 1152, first and

second plates

1151 and 1152 being coupled to each other to house lift lock mechanism 113, and reference to locking pin 111 and anti-slip pin 112 extending out of support arm 11 means that locking pin 111 and anti-slip pin 112 extend through corresponding holes in housing 1153.

Referring to fig. 11 to 14, in an embodiment, the bed frame 1 is provided with a swing preventing mechanism 3, and the swing preventing mechanism 3 includes:

a guide groove 32 that is attached to the bed frame 1 and forms a guide path in which the rotation axis extends;

the positioning arm 33 is slidably fitted in the guide groove 32, and a U-shaped bayonet 331 is provided toward one end of the slide groove 21, and when the bayonet 331 is engaged with the slide groove 21, the positioning arm 33 is in a positioned state in which the bed frame 1 is prevented from swinging with respect to the slide groove 21.

The positioning arm 33 can be retracted into the guide groove 32 to release the bed frame 1 from swinging relative to the slide groove 21, and can be extended out of the guide groove 32 to prevent the bed frame 1 from swinging relative to the slide groove 21 by engaging the bayonet 331 with the slide groove 21. The guide groove 32 is in the embodiment shown mounted on the bed bottom plate 31, and the bed bottom plate 31 is connected with the bed frame 1. The anti-swing mechanism 3 is installed at both ends of the bed bottom plate 31, and the bayonet 331 of the positioning arm 33 is matched with the lower end of the sliding groove 21 to provide a moment for restraining the bed frame 1 from swinging relative to the sliding groove 21.

A positioning block 34 for limiting the relative position of the positioning arm 33 and the guide groove 32 is further arranged between the positioning arm 33 and the guide groove 32, the locking block is slidably arranged in the positioning hole of the guide groove 32, and an I-shaped groove 332 for releasing the positioning block 34 is arranged on the positioning arm 33. When the positioning blocks 34 are located at both ends of the i-shaped groove 332, the positioning arms 33 are located in the positioning state and retracted into the guide grooves 32, respectively. The bottom of the positioning block 34 is enlarged and just fits the two ends of the i-shaped slot 332, so that the movement of the positioning arm 33 can be released only when the positioning block 34 moves toward the bed bottom plate 31 to achieve the misalignment of the bottom of the positioning block 34 with the i-shaped slot 332. Meanwhile, a pressure spring (not shown) is arranged 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. One side of the bottom of the positioning block 34 is further provided with a positioning chamfer 341, and when the positioning arm 33 moves towards the supporting arm 11, the I-shaped groove 332 can automatically unlock the positioning block 34, so that the operation of a user is facilitated.

Referring to fig. 5, 10 and 15, in an embodiment, in order to further improve the space performance of the child's bed during storage and transportation, one end of the supporting arm 11 is rotatably mounted on the bed frame 1, and a limiting structure 12 is arranged between the supporting arm 11 and the bed frame 1 to prevent the supporting arm 11 from rotating without limitation. The two support arms 11 are in a relatively square state except for the upright state of the support arms 11, and at the moment, the two support arms 11 are accommodated in the bed frame 1 and are coplanar with the bed frame 1, so that the overall planar folding of the structure of the bed frame 1 can be realized by matching with flexible bed cloth, and more excellent storage and transportation performance is provided.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims

1. Supporting legs, its characterized in that includes:

2. The support foot according to claim 1, wherein the first joint comprises a first disk surrounding the rotation axis, the second joint comprises 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 formed in the inner wall of the first disk, a second locking groove is formed in the inner wall of the second disk, and the first locking groove and the second locking groove can be meshed with the locking ratchet.

3. A support foot according to claim 2, characterised in that the first and second legs have a collapsed condition in which they are brought together and an operative condition in which they are rotated away from each other about the axis of rotation;

in the operating state, the first locking groove and the second locking groove are aligned, the locking ratchet can slide in the first locking groove and the second locking groove to a locking position, and the locking ratchet is simultaneously positioned in the first locking groove and the second locking groove in the locking position.

4. The support foot according to claim 3, wherein a plurality of locking tongues are provided on the outer peripheral surface of the locking ratchet teeth, a plurality of first locking grooves and a plurality of second locking grooves are provided, 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 second locking grooves.

5. A support foot according to claim 4, characterised in that the drive member comprises:

6. The support foot according to claim 5, further comprising a shielding cover covering the first joint and the second joint, wherein the button is slidably mounted on the outer side of the shielding cover, the locking ratchet is arranged on the inner side of the shielding cover, and the linkage rod penetrates through the shielding cover and is in linkage contact with and pressed between the push plate and the button;

one side of the shielding cover, which faces away from the button, is provided with an adapting hole for installing expansion equipment, and the rotating axis penetrates through the adapting hole.

7. Child bed, characterized in that, including the bed frame and according to claim 1 to 6 any one the supporting legs, the double contralateral of bed frame is respectively rotated and is installed the support arm, the supporting legs has two sets, installs the sliding tray on each set of supporting legs respectively, the support arm activity is pegged graft in the sliding tray of a corresponding set of supporting legs, and grafting depth is adjustable.

8. Child's bed according to claim 7, characterized in that the sliding channel is provided with a pivot axis of rotation, which pivot axis of rotation is mounted on the first joint and/or the second joint, each support arm having, in a positional relationship with the bed frame and the respective support foot:

9. The child bed according to claim 7, wherein a groove wall of the sliding groove is provided with a limiting hole and a plurality of locking holes which are sequentially arranged along the height direction; the supporting arm is provided with a locking pin and an anti-falling pin which are independently controlled;

10. Child's bed according to claim 7, characterized in that the bed frame is provided with a swing-proof mechanism comprising: