CN116439522A

CN116439522A - Supporting leg and crib

Info

Publication number: CN116439522A
Application number: CN202210010219.4A
Authority: CN
Inventors: 胡军杰
Original assignee: China Wonderland Nurserygoods Co Ltd
Current assignee: China Wonderland Nurserygoods Co Ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2023-07-18
Also published as: AU2023205315A1; TW202333607A; WO2023131653A1; KR20240129049A

Abstract

The invention provides a supporting leg and a crib. The telescopic part is connected with the main body part in a sliding way and has an extending state and a contracting state relative to the main body part. The telescopic mechanism is arranged between the main body part and the telescopic part and is used for realizing the expansion and contraction of the telescopic part. The buffer mechanism is used for slowing down the extending speed of the telescopic part when the telescopic part is converted from a contracted state to an extended state. The expansion and contraction of the telescopic part of the supporting leg relative to the main body part are realized through the telescopic mechanism, when the telescopic part is converted into the expansion state from the contraction state, the buffer structure can slow down the extending speed of the telescopic part, so that impact noise is avoided, the impact to the body of a user is avoided, the safety coefficient is improved, and the user experience is improved.

Description

Supporting leg and crib

Technical Field

The invention relates to the technical field of cribs, in particular to a supporting leg and a crib.

Background

For the purpose of abutting against a large bed of an adult or facilitating storage, supporting legs of the crib are generally arranged to be automatically ejected under the thrust of an elastic piece. However, the extending speed of the supporting leg from the contracted state to the extended state is often too high, so that striking noise is easily generated, or the supporting leg is bumped against the body of a user, so that a certain potential safety hazard exists, and the user experience is poor.

Disclosure of Invention

Accordingly, it is desirable to provide a support leg and a crib having a function of reducing the extending speed of the support leg, so as to prevent the occurrence of impact noise or impact to a user.

The first aspect of the present invention provides a supporting leg, comprising:

a main body portion;

a telescopic part slidably connected to the main body part and having an extended state and a contracted state with respect to the main body part;

the telescopic mechanism is arranged between the main body part and the telescopic part and is used for realizing the expansion and contraction of the telescopic part; and

And the buffer mechanism is used for slowing down the extending speed of the telescopic part when the telescopic part is converted from a contracted state to an extended state.

The expansion and contraction of the telescopic part of the supporting leg relative to the main body part are realized through the telescopic mechanism, when the telescopic part is converted into the expansion state from the contraction state, the buffer structure can slow down the extending speed of the telescopic part, so that impact noise is avoided, the impact to the body of a user is avoided, the safety coefficient is improved, and the user experience is improved.

In one embodiment, the main body portion includes a hollow sleeve-joint casing, the telescopic portion is partially located in the sleeve-joint casing and can move relative to the sleeve-joint casing, the buffer mechanism includes a sliding plug, the sliding plug is fixed in the telescopic portion is located at one end in the sleeve-joint casing, the sliding plug is in airtight fit with the main body portion to form a volume-variable air accommodating cavity, an air vent is formed in the sliding plug, and the air accommodating cavity is communicated with the outside only through the air vent.

In one embodiment, the main body portion includes a fixing member and a first guiding member disposed in the sleeve-joint casing, the fixing member is fixed in the sleeve-joint casing, one end of the first guiding member is connected with the fixing member and is disposed along the extending direction of the extending portion, the sliding plug has a first accommodating groove disposed along the extending direction of the extending portion, the first guiding member can be partially accommodated in the first accommodating groove, the first guiding member is in airtight fit with a groove wall of the first accommodating groove to form the air accommodating cavity, and the air vent is disposed at the groove bottom of the first accommodating groove.

In one embodiment, an airtight flange is arranged at one end of the first guide part far away from the fixing part in an annular mode, and the airtight flange is in airtight fit with the groove wall of the first accommodating groove to form the air accommodating cavity.

In one embodiment, the size of the vent hole is adjustable.

In one embodiment, the main body further comprises a fixing piece arranged in the sleeve-joint shell, the fixing piece is fixed on the sleeve-joint shell, the telescopic mechanism comprises a resetting piece, and two ends of the resetting piece are respectively abutted to the fixing piece and the sliding plug.

In one embodiment, a second guiding element is further arranged in the main body part along the extending and contracting direction of the extending and contracting part, one end of the second guiding element is connected with the fixing element, and the resetting element is sleeved on the second guiding element.

In one embodiment, the sliding plug is provided with a second accommodating groove arranged along the telescopic direction of the telescopic part, the second guide piece can be partially accommodated in the second accommodating groove, and two ends of the reset piece are respectively propped against the bottoms of the fixing piece and the second accommodating groove.

In one embodiment, the support foot further comprises a locking mechanism for limiting the telescoping portion to an extended state.

In one embodiment, the locking mechanism comprises a first matching piece arranged on the sliding plug and a second matching piece arranged on the fixing piece, the first matching piece and the second matching piece are in sliding fit, one of the first matching piece and the second matching piece is provided with a resistance part, and the other one of the first matching piece and the second matching piece needs to overcome the resistance of the resistance part to realize the conversion of the telescopic part from an extended state to a contracted state.

In one embodiment, the first matching piece is a sliding piece, the sliding piece is provided with a guide groove, the second matching piece is a guide pillar which is in sliding fit with the guide groove, and the resistance part is arranged on the sliding piece.

In one embodiment, when the telescopic part is in the extended state, the guide post presses the resistance part to elastically deform and convert to the contracted state when the telescopic part is stressed.

In one embodiment, the sliding piece is provided with a sliding main body and an elastic piece, the sliding main body and the elastic piece are enclosed to form the guide groove, one end of the elastic piece is connected with the sliding main body, the other end of the elastic piece is arranged at intervals with the sliding main body to form a gap, and one end, close to the gap, of the elastic piece is provided with the resistance portion.

In one embodiment, the resistance part is a blocking protrusion provided on the elastic sheet and extending toward the guide groove.

In one embodiment, the telescopic parts are arranged on two sides of the main body part, and the telescopic mechanisms and the buffer mechanisms are arranged between the main body part and the telescopic parts on two sides of the main body part.

In one embodiment, the sliding plugs of the buffer mechanism positioned at two sides of the main body part are in airtight fit with the main body part to form the air accommodating cavity with variable volume, the sliding plugs positioned at two sides of the main body part are all provided with vent holes, and the air accommodating cavity is communicated with the outside only through the vent holes.

The second aspect of the invention provides a crib, which comprises a crib body, at least one upright post and at least one supporting leg, wherein two ends of the upright post are respectively connected with the bottom of the crib body and the top of the supporting leg.

Drawings

FIG. 1 is a schematic view of a crib according to an embodiment of the invention;

FIG. 2 is a side partial cross-sectional view of FIG. 1 with the telescoping portion in a fully contracted state relative to the main body portion;

FIG. 3 is an enlarged view at A of FIG. 2;

FIG. 4 is a partial cross-sectional view of the other side of FIG. 1 with the telescoping portion partially contracted relative to the main body portion;

FIG. 5 is an enlarged view at B of FIG. 4;

FIG. 6 is a partial cross-sectional view of yet another side of FIG. 1 with the telescoping portion in a fully extended state relative to the main body portion;

fig. 7 is an enlarged view of a portion C of fig. 6;

fig. 8 is a perspective view of the sliding plug of fig. 2.

Description of the reference numerals

100. The bed body, 110, accommodation space, 200, upright, 300, support leg, 310, main body portion, 311, socket housing, 312, fixing member, 313, first guide, 313a, airtight flange, 314, second guide, 320, telescoping portion, 321, roller, 322, mounting opening, 330, locking mechanism, 331, slider, 331a, sliding body, 331b, elastic piece, 331c, guide groove, 331d, notch, 331e, protrusion, 332, guide post, 340, sliding plug, 341, first accommodation portion, 341a, first accommodation groove, 341b, vent, 342, second accommodation portion, 342a, second accommodation groove, 343, connection portion, 344, abutment boss, 350, accommodation chamber, 360, reset member.

Detailed Description

The present invention will be further described in detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. 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. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, an embodiment of the present invention provides a crib, which includes a crib body 100, at least one upright 200, and at least one supporting leg 300. The crib has a function of slowing down the extension speed of the support legs 300, and preventing impact noise or impact to a user.

Specifically, as shown in fig. 1, the bed body 100 has a receiving space 110 for receiving an infant. One end of the column 200 is connected to the bottom of the bed 100, and the other end is connected to the top of the support leg 300. In this manner, the upright 200 and the support foot 300 form a support structure for the bed 100. In this embodiment, two upright posts 200 are respectively disposed on two sides of the crib in the longitudinal direction, and two supporting legs 300 are correspondingly disposed. Of course, in other embodiments, the number and arrangement of the columns 200 and the support legs 300 may be adjusted as desired.

Specifically, as shown in fig. 2 to 7, the support foot 300 includes a main body portion 310, a telescopic portion 320, a buffer mechanism, a telescopic mechanism, and a locking mechanism 330.

Specifically, as shown in fig. 3, 5 and 7, the body part 310 includes a socket housing 311, a fixing member 312, a first guide 313 and a second guide 314. The sleeve housing 311 is a hollow structure, and the fixing member 312, the first guide member 313 and the second guide member 314 are all disposed in the sleeve housing 311. In this embodiment, the fixing member 312 is fixed at a substantially middle portion in the socket housing 311. In this embodiment, the first guide 313, the second guide 314 and the fixing member 312 are integrally formed. Of course, in other embodiments, the first guide 313, the second guide 314, and the fixing member 312 may be separate components.

Specifically, as shown in fig. 3, the first guide 313 has a substantially rod shape, and one end of the first guide 313 is fixed to the fixing member 312 and disposed along the expansion and contraction direction of the expansion and contraction portion 320 (i.e., the horizontal direction in the present embodiment). The end of the first guide member 313 remote from the fixing member 312 is provided with an airtight flange 313a. In this embodiment, the first guide member 313 has two and is symmetrically fixed to both left and right sides of the fixing member 312. Of course, in other embodiments, the number and arrangement positions of the first guide members 313 may be adjusted according to actual needs.

Specifically, as shown in fig. 3, the second guide 314 has a substantially rod shape, and one end of the second guide 314 is fixed to the fixing member 312 and disposed along the expansion and contraction direction of the expansion and contraction portion 320. In this embodiment, two second guiding elements 314 are symmetrically fixed on the left and right sides of the fixing element 312, and the two second guiding elements 314 are respectively located below the two first guiding elements 313. Of course, in other embodiments, the number and the arrangement positions of the second guide members 314 may be adjusted according to actual needs, and the relative positions of the second guide members 314 and the first guide members 313 may be adjusted according to needs, for example, the first guide members 313 may be located below the second guide members 314.

Specifically, as shown in fig. 2 and 3, the telescopic portion 320 has a substantially hollow tubular structure, and the telescopic portion 320 is partially located in the socket housing 311 and can move relative to the socket housing 311. In this embodiment, there are two telescopic portions 320, and the two telescopic portions 320 are respectively located in the sleeve housing 311 and are respectively movable relative to the sleeve housing 311. The end of each telescopic part 320 far away from the sleeve housing 311 is provided with a roller 321, so as to facilitate the movement of the crib.

Specifically, as shown in fig. 2, 3 and 8, the buffer mechanism includes a sliding plug 340, and the sliding plug 340 is fixed to one end of the telescopic portion 320 located in the socket housing 311. The sliding plug 340 includes a first receiving part 341, a second receiving part 342, and a connecting part 343 connected between the first receiving part 341 and the second receiving part 342, the first receiving part 341 is provided with a first receiving groove 341a provided along the expansion and contraction direction of the expansion and contraction part 320, and the second receiving part 342 is provided with a second receiving groove 342a provided along the expansion and contraction direction of the expansion and contraction part 320. During the retraction of the telescopic portion 320, as shown in fig. 7 and 5 to 3, the first guide 313 is gradually inserted into the first receiving groove 341a, and the second guide 314 is gradually inserted into the second receiving groove 342a. This arrangement can provide a certain guiding function for the movement of the telescopic portion 320. The airtight flange 313a is airtight fitted with the groove wall of the first receiving groove 341a to form the variable volume air accommodating chamber 350. The bottom of the first receiving groove 341a has a vent hole 341b communicating with the air-accommodating chamber 350.

As shown in fig. 3 and 8, the sliding plug 340 is provided with an abutment boss 344 around the outer periphery of one end near the notch of the first and second accommodation grooves 341a and 342a. The end of the telescopic part 320 located in the sleeve housing 311 is provided with a mounting opening 322, and the sliding plug 340 is partially inserted into the telescopic part 320 through the mounting opening 322. The abutment boss 344 is located outside the telescopic portion 320, and a side of the abutment boss 344 remote from the fixing member 312 abuts against the mouth wall of the mounting opening 322. .

Further, the size of the vent 341b is adjustable. For example, a movable shutter (not shown) may be provided at the vent hole 341b, and the size of the vent hole 341b may be adjusted by adjusting the range in which the shutter shields the vent hole 341b. Of course, the size of the vent hole 341b may be adjusted in other ways.

In this embodiment, as shown in fig. 2 and 3, the sliding plugs 340 are fixed to the telescopic portions 320 located on both sides of the main body portion 310. In this way, the sliding plugs 340 at both sides of the main body 310 are hermetically matched with the airtight flanges 313a on the corresponding first guide 313 to form the volume-variable air accommodating chamber 350, and the sliding plugs 340 at both sides are provided with the vent holes 341b, so that the air accommodating chamber 350 is communicated with the outside only through the vent holes 341b.

In this way, when the expansion and contraction part 320 is converted from the contracted state to the expanded state (as shown in fig. 3, 5 to 7) relative to the main body part 310, the sliding plug 340 located at one side (or both sides) of the main body part 310 moves along with the expansion and contraction part 320 in a direction away from the fixing member 312, so that the volume of the air-accommodating chamber 350 becomes larger, the air pressure in the air-accommodating chamber 350 is smaller than the external atmospheric pressure, that is, a negative pressure is generated in the air-accommodating chamber 350, and a resistance is formed to the extension of the expansion and contraction part 320 located at one side (or both sides) of the main body part 310, so that the extension speed of the expansion and contraction part 320 located at one side (or both sides) of the main body part 310 is slowed down, and in the process, the external air gradually enters into the air-accommodating chamber 350 through the vent 341b on the sliding plug 340 located at both sides of the main body part 310, so as to gradually reduce the negative pressure in the air-accommodating chamber 350, so that the expansion and contraction part 320 located at one side (or both sides) of the main body part 310 gradually realizes complete extension at a relatively uniform speed under the action of the dynamic balanced air pressure environment such as shown in fig. 6 and 7. In this way, it is possible to prevent the striking noise or the striking to the user due to the excessively high extension speed of the extension part 320. Meanwhile, by adjusting the size of the vent hole 341b, the intake speed of the intake hole can be adjusted, so that the extension speed of the telescopic part 320 can be adjusted according to the user's needs.

Of course, the structure of the buffer mechanism is not limited to this, and may be other forms.

Specifically, as shown in fig. 2 and 3, the telescoping mechanism includes a reset member 360. Alternatively, the return member 360 is a spring, although in other embodiments, the return member 360 may be other elastic members, such as a rubber post, etc. In this embodiment, the spring is sleeved on the second guide 314, and one end of the spring abuts against the fixing member 312, and the other end abuts against the bottom of the second accommodating groove 342a. Thus, when the crib needs to be spliced with a large bed, for example, and is used as a bedside bed, the telescopic part 320 is propped against the large bed and is contracted towards the main body part 310, so that the resetting piece 360 is elastically deformed, as shown in fig. 2 and 3. When the crib is not needed to be spliced with the crib and is moved away from the crib, the telescopic part 320 automatically stretches out under the action of the resetting piece 360, as shown in fig. 6 and 7. In this embodiment, two resetting members 360 are respectively sleeved on the second guiding members 314 at two sides of the fixing member 312, so as to realize automatic ejection of the telescopic portions 320 at two sides of the main body 310.

Of course, in other embodiments, the first guide 313 and the second guide 314 may have the same structure, and the first receiving portion 341 and the second receiving portion 342 may have the same structure, that is, only one guide need be provided on one side of the fixing member 312, and only one receiving portion need be provided on the sliding plug 340. Thus, the structure of the supporting leg 300 can be simplified, and the manufacturing difficulty can be reduced.

Specifically, as shown in fig. 3, 5 and 7, the locking mechanism 330 includes a first mating member and a second mating member. In this embodiment, the first matching member is a sliding member 331, the sliding member 331 has a substantially elongated structure and is disposed along the extending and contracting direction of the extending and contracting portion 320, and one end of the sliding member 331 is connected to the sliding plug 340. In this embodiment, the sliding member 331 and the sliding plug 340 are integrally formed. Of course, in other embodiments, the sliding element 331 and the sliding plug 340 may be two independent components. The sliding piece 331 includes a sliding main body 331a and an elastic piece 331b, the sliding main body 331a and the elastic piece 331b enclose a guide groove 331c, one end of the elastic piece 331b is connected with the sliding main body 331a, the other end of the elastic piece 331b is spaced from the sliding main body 331a to form a gap 331d, and one end of the elastic piece 331b close to the gap 331d is provided with a resistance portion. In the present embodiment, the resistance portion is a blocking protrusion 331e provided on the elastic piece 331b and extending toward the guide groove 331 c. Of course, in other embodiments, the resistance portion may have other structures. The second matching piece is a guide post 332 in sliding fit with the guide groove 331c, and the guide post 332 is arranged on the fixing piece 312.

When the telescopic portion 320 extends outwards, the sliding member 331 moves relative to the fixing member 312, so that the guide post 332 and the guide slot 331c slide relatively until the guide post 332 abuts against the blocking protrusion 331e, at this time, the guide post 332 abuts against the blocking protrusion 331e under the elastic force of the resetting member 360 to deform the blocking protrusion 331e, and then the guide post 332 enters the left end of the guide slot 331c, and the blocking protrusion 331e that is restored to deform is blocked at the left end of the guide slot 331c, so that the telescopic portion 320 is locked in the extended state, as shown in fig. 6 and 7. When the telescopic part 320 is required to be converted from the extended state to the contracted state, a certain external force needs to be applied to the telescopic part 320 so that the guide post 332 overcomes the resistance of the blocking protrusion 331e to unlock the telescopic part 320, and the telescopic part 320 can be contracted to a proper extent to be abutted against a large bed or the like, as shown in fig. 2 to 5. Of course, in other embodiments, the locking mechanism 330 may take other forms.

In summary, the specific working principle of the supporting leg 300 and the crib is as follows:

when the crib is spliced with the bunk or the telescopic part 320 is required to be contracted relative to the main body part 310 in other cases, a certain external force needs to be applied to the telescopic part 320 on one side (or both sides) of the main body part 310, so that the guide post 332 overcomes the resistance of the blocking protrusion 331e to unlock the telescopic part 320. The expansion and contraction part 320 of one side (or both sides) of the main body part 310 is contracted into the main body part 310 by the abutment of a large bed or other objects, so that the restoring member 360 is elastically deformed, as shown in fig. 2 and 3.

When the crib is not needed to be spliced with a bunk bed and is moved away from the bunk bed or other conditions, the telescopic part 320 positioned at one side (or two sides) of the main body 310 is released from abutting with the bunk bed when the telescopic part 320 is required to be stretched relative to the main body 310, the telescopic part 320 moves away from the fixing piece 312 under the action of the elastic force of the resetting piece 360, and simultaneously drives the corresponding sliding plug 340 to move in the same direction, so that the volume of the air accommodating cavity 350 becomes larger, the air pressure in the air accommodating cavity 350 is smaller than the external atmospheric pressure, that is, negative pressure is generated in the air accommodating cavity 350, the stretching speed of the telescopic part 320 positioned at one side (or two sides) of the main body 310 is slowed down, and in the process, the external air gradually enters into the air accommodating cavity 350 through the vent 341b on the sliding plug 340 at two sides of the main body 310, so that the telescopic part positioned at one side (or two sides) of the main body 310 gradually reduces the negative pressure in the air accommodating cavity 350, the telescopic part 320 gradually and the uniform stretching speed is realized under the action of the dynamically balanced air accommodating cavity 320, and the noise can be completely avoided due to the fact that the stretching speed of the telescopic part 320 is stretched completely. Under the elastic force of the reset member 360, the guide post 332 abuts against the blocking protrusion 331e to deform the blocking protrusion 331e, and then the guide post 332 enters the left end of the guide groove 331c, and the blocking protrusion 331e that is restored to be deformed is blocked at the left end of the guide groove 331c, so that the telescopic portion 320 is locked in the extended state, as shown in fig. 6 and 7.

The supporting leg 300 and the crib have at least the following technical effects:

the extension and contraction of the extension portion 320 of the support leg 300 relative to the main body portion 310 is achieved through the extension mechanism, and when the extension portion 320 is converted from the contracted state to the extended state, the buffer mechanism can slow down the extension speed of the extension portion 320, so that impact noise is avoided, impact to the body of a user is avoided, the safety factor is improved, and the user experience is improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A support foot, comprising:

a main body portion;

2. The support foot according to claim 1, wherein the main body portion comprises a hollow sleeve-joint housing, the telescopic portion is partially located in the sleeve-joint housing and can move relative to the sleeve-joint housing, the buffer mechanism comprises a sliding plug, the sliding plug is fixed at one end of the telescopic portion located in the sleeve-joint housing, the sliding plug is in airtight fit with the main body portion to form a volume-variable air accommodating cavity, a vent hole is formed in the sliding plug, and the air accommodating cavity is communicated with the outside only through the vent hole.

3. The support leg according to claim 2, wherein the main body portion includes a fixing member and a first guide member provided in the socket housing, the fixing member is fixed to the socket housing, one end of the first guide member is connected to the fixing member and is provided along the expansion and contraction direction of the expansion and contraction portion, the sliding plug has a first accommodation groove provided along the expansion and contraction direction of the expansion and contraction portion, the first guide member is partially accommodated in the first accommodation groove, the first guide member is air-tightly fitted with a groove wall of the first accommodation groove to form the air accommodating chamber, and the air vent is provided at a groove bottom of the first accommodation groove.

4. A support foot according to claim 3, wherein the end of the first guide member remote from the securing member is provided with an airtight flange which is in airtight engagement with the wall of the first receiving groove to form the air-accommodating chamber.

5. The support foot of claim 2 wherein the vent hole is adjustable in size.

6. The support foot according to claim 2, wherein the main body further comprises a fixing member disposed in the sleeve housing, the fixing member is fixed to the sleeve housing, the telescopic mechanism comprises a reset member, and two ends of the reset member are respectively abutted against the fixing member and the sliding plug.

7. The support foot according to claim 6, wherein a second guide member is further disposed in the main body portion along the extending direction of the extending portion, one end of the second guide member is connected to the fixing member, and the reset member is sleeved on the second guide member.

8. The support leg according to claim 7, wherein the sliding plug has a second accommodation groove provided in a telescoping direction of the telescoping portion, the second guide member is partially accommodated in the second accommodation groove, and both ends of the return member are respectively abutted against bottoms of the fixing member and the second accommodation groove.

9. The support foot of claim 2, further comprising a locking mechanism for limiting the telescoping portion to an extended state.

10. The support foot of claim 9, wherein the locking mechanism comprises a first mating member disposed on the sliding plug and a second mating member disposed on the fixed member, the first mating member and the second mating member being slidably mated, one of the first mating member and the second mating member being provided with a resistive portion, the other of the first mating member and the second mating member being required to overcome the resistive force of the resistive portion to effect a transition of the telescoping portion from the extended state to the collapsed state.

11. The support foot of claim 10, wherein the first engagement member is a slider having a guide slot, the second engagement member is a guide post slidably engaged with the guide slot, and the resistance portion is disposed on the slider.

12. The support foot of claim 11, wherein when the telescoping portion is in the extended state, the telescoping portion is forced to elastically deform the guide post against the resistance portion to transition to the contracted state.

13. The support foot according to claim 12, wherein the sliding member has a sliding body and an elastic sheet, the sliding body and the elastic sheet enclose the guide groove, one end of the elastic sheet is connected to the sliding body, the other end of the elastic sheet is spaced from the sliding body to form a gap, and one end of the elastic sheet adjacent to the gap is provided with the resistance portion.

14. The support foot of claim 13, wherein the resistance portion is a blocking protrusion provided on the elastic sheet and extending toward the guide groove.

15. The support foot according to any one of claims 2 to 14, wherein the telescopic portions are provided on both sides of the main body portion, and the telescopic mechanism and the buffer mechanism are provided between the main body portion and the telescopic portions on both sides of the main body portion.

16. The support foot according to claim 15, wherein the sliding plugs of the buffer mechanism located on both sides of the main body portion are hermetically matched with the main body portion to form the volume-variable air accommodating chamber, the sliding plugs located on both sides of the main body portion are each provided with a vent hole, and the air accommodating chamber is communicated with the outside only through the vent holes.

17. A crib, comprising a crib body, at least one upright post and at least one supporting leg as claimed in any one of claims 1 to 16, wherein two ends of the upright post are respectively connected with the bottom of the crib body and the top of the supporting leg.