Frame folding mechanism and bed frame

Abstract

To provide a frame folding mechanism used for a bed frame.SOLUTION: A bed frame includes a frame part and a support part. A frame folding mechanism of the current invention includes a crossbar, a link, and an engagement assembly, with the crossbar positioned below the frame part, the link whose first end pivotally connected to the support part, and the engagement assembly externally engaging the crossbar. Here, a second end opposite the first end of the link is pivotally connected to the engagement assembly, and the engagement assembly is operated so as to fix the engagement assembly to the crossbar or slide the engagement assembly relative to the crossbar. The frame folding mechanism has a stable structure when used, and is unlikely to oscillate.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the field of cribs, and in particular to a frame folding mechanism and a bed frame having a frame folding mechanism. [Background technology]

[0002] A baby crib is a baby product that allows babies to rest and is convenient for caregivers to care for babies. However, it is often the case that bed frames with foldable support legs on the market today have support legs that are prone to shaking when unfolded, making the crib not stable enough when in use, resulting in an uncomfortable experience. Summary of the Invention [Problem to be solved by the invention]

[0003] An object of the present application is to provide a frame folding mechanism that can stabilize a bed frame when in use and is less likely to shake.

[0004] Another object of the present invention is to provide a frame folding mechanism that is highly reliable in structure and easy to operate.

[0005] It is a further object of the present invention to provide a frame folding mechanism that can mitigate or eliminate at least one of the above-mentioned deficiencies.

[0006] It is a further object of the present invention to provide a bed frame including the frame folding mechanism described above. [Means for solving the problem]

[0007] To achieve the above-mentioned object, one aspect of the present application provides a frame folding mechanism used in a bed frame including a frame portion and a support portion, the frame folding mechanism including a cross bar, a link, and an engagement assembly, wherein the cross bar is positioned below the frame portion, the link has a first end pivotally connected to the support portion, the engagement assembly is fitted onto the cross bar, and a second end of the link opposite to the first end is pivotally connected to the engagement assembly, and the engagement assembly is operated to fix the engagement assembly to the cross bar or to slide the engagement assembly relative to the cross bar.

[0008] In one embodiment, the engagement assembly can be secured to the cross bar in at least two positions.

[0009] In one embodiment, the support part of the bed frame is rotatable relative to the frame part between an unfolded position and a folded position, and the cross bar is formed with a folding locking groove and an unfolded locking groove, and when the support part is in the unfolded position, the engagement assembly is fixed to the unfolded locking groove, and when the support part is in the folded position, the engagement assembly is fixed to the folding locking groove.

[0010] In one embodiment, the engagement assembly includes a sleeve, an unlock button, an engagement portion, and a reset member, the sleeve being formed as a housing for the engagement assembly, the unlock button being at least partially exposed to the outside of the sleeve and operable, the engagement portion being displaced in a first direction in response to actuation of the unlock button, and the reset member applying a force to the engagement portion in a second direction opposite to the first direction such that when the unlock button is not actuated, the reset member tends to displace the engagement portion along the second direction.

[0011] In one embodiment, the outer periphery of the engaging portion corresponds to the dimension of the expanding and fixing groove.

[0012] In one embodiment, the engagement portion has a close fit with the deployment locking groove.

[0013] In one embodiment, the engagement assembly includes an unlocking button and an engagement portion, the unlocking button and the engagement portion being formed on both sides of the horizontal bar, and the horizontal bar including a folding locking groove and an unfolding locking groove corresponding to the engagement portion.

[0014] In one embodiment, the engagement assembly includes one or two reset members.

[0015] In one embodiment, the first direction is away from the crossbar and the second direction is towards the crossbar.

[0016] In one embodiment, the engaging portion is provided with a guide portion, and the guide portion can guide the engaging portion into the folding fixing groove and / or the unfolding fixing groove.

[0017] In one embodiment, a recess is formed in the horizontal bar, and in the longitudinal direction of the horizontal bar, the recess is formed at a position corresponding to the folding fixing groove and / or the unfolding fixing groove, and the sleeve is provided with a protrusion that engages with the recess; or a protrusion is formed in the horizontal bar, and in the longitudinal direction of the horizontal bar, the protrusion is formed at a position corresponding to the folding fixing groove and / or the unfolding fixing groove, and the sleeve is provided with a recess that engages with the protrusion.

[0018] In one embodiment, when the recess is formed in the cross bar, an elastic deformation portion is formed in the sleeve and the protrusion portion is provided on the inner surface of the elastic deformation portion, or when the protrusion portion is formed in the cross bar, an elastic deformation portion is formed in the sleeve and the recess is provided on the inner surface of the elastic deformation portion.

[0019] In one embodiment, the sleeve includes an upper case and a lower case that cooperate with each other, and the elastic deformation portion is provided on the upper case and / or the lower case.

[0020] In one embodiment, the link includes a first pivot shaft, a second pivot shaft, a first link portion, and a second link portion, wherein the first pivot shaft is rotatably mounted on the support portion, the second pivot shaft is rotatably mounted on the engagement assembly, the first link portion is connected to one end of the first pivot shaft and the second pivot shaft, and the second link portion is connected to the other end of the first pivot shaft and the second pivot shaft, and the first link portion and the second link portion are formed on both sides of the cross bar, respectively.

[0021] In one embodiment, the first link portion and the second link portion are formed in a folded shape and are mirror images of each other.

[0022] In one embodiment, the bending angle formed by the first link portion and the second link portion is greater than 90°.

[0023] In one embodiment, the horizontal height of each end of the crossbar is greater than the horizontal height of the middle portion of the crossbar.

[0024] One aspect of the present application provides a bed frame including a frame portion, a support portion, and the above-described frame folding mechanism.

[0025] In one embodiment, the bed frame includes two support parts, the frame folding mechanism includes two links and two engagement assemblies, and a folding locking groove and an unfolding locking groove are formed on opposite sides of the cross bar.

[0026] The frame folding mechanism of the present invention stabilizes the structure of the bed frame when in use, making it less likely to shake, and the connection between the frame part and the support part of the bed frame is reliable, tight, and free of undesirable gaps, while making the folding operation of the bed frame simple, convenient, labor-saving, and less prone to misoperation.

[0027] The various objects, features, and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiment of the invention when considered in conjunction with the drawings, which are merely illustrative illustrations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always represent the same or similar parts. [Brief explanation of the drawings]

[0028] [Figure 1] FIG. 1 is a perspective view of a bed frame according to the present invention. [Figure 2] FIG. 2 is an enlarged view of a portion of FIG. [Figure 3] FIG. 2 is another perspective view of the bed frame of the present application. [Figure 4] FIG. 4 is an enlarged view of a portion of FIG. [Figure 5] FIG. 2 is a perspective view of the support portion of the bed frame of the present application in the folded position. [Figure 6] FIG. 6 is an enlarged view of a portion of FIG. 5. [Figure 7] 1 is a schematic, partially cutaway perspective view of a frame folding mechanism of the present application; [Figure 8] FIG. 10 is another schematic, partially cutaway perspective view of the frame folding mechanism of the present application. [Figure 9] FIG. 10 is another schematic, partially cutaway perspective view of the frame folding mechanism of the present application. [Figure 10] FIG. 10 is another schematic, partially cutaway perspective view of the frame folding mechanism of the present application. [Figure 11] FIG. 1 is an exploded perspective view of one embodiment of an engagement assembly of the frame folding mechanism of the present application. [Figure 12] FIG. 10 is an exploded perspective view of an embodiment of the engagement assembly of the frame folding mechanism of the present application, viewed from another angle. [Figure 13] FIG. 10 is a bottom perspective view of a partial element of another embodiment of the frame folding mechanism of the present application. [Figure 14] 10 is a cross-sectional view of a partial element of another embodiment of the frame folding mechanism of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0029] In order to further explain the principle and structure of the present application, a preferred embodiment of the present application will be described in detail based on the accompanying drawings. However, this embodiment is used for explanation and interpretation only and cannot be used to limit the patent protection scope of the present application.

[0030] The terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the present specification. As used in this application and the appended claims, the singular forms "a," "an," "an," and "that" are also intended to include the plural form unless the context clearly dictates otherwise. The term "and / or" as used herein should also be understood to mean and include any and all possible combinations of one or more of the associated listed items. Directional terms such as "first direction," "second direction," and the like, as used herein, are not limiting but are used to distinguish.

[0031] There is a need to provide a crib frame that is lockable, stable, and resistant to shaking.

[0032] 1, 2, and 5, the bed frame 1 of the present application is foldable and allows a baby or child to sleep or play when in use. The bed frame 1 may include a frame portion 10 and a support portion 20. The frame portion 10 can be used to provide an activity space for the baby or child. The number of support portions 20 may be two. The two support portions 20 may be provided below both longitudinal ends of the frame portion 10. The present application does not limit the number of support portions 20. The support portions 20 are pivotable relative to the frame portion 10 between an unfolded position (shown in FIG. 1) and a folded position. The folded position may be a position in which all of the support portions 20 are pivoted to approach a horizontal position. In the folded position, the bed frame 1 can have a smaller volume for easier storage and transportation.

[0033] The frame folding mechanism 30 can be connected to the frame portion 10 and the support portion 20, respectively, so as to facilitate manipulating and folding the support portion 20, and to firmly hold the support portion 20 in the unfolded or folded position.

[0034] The frame folding mechanism 30 includes a cross bar 320, a link 310, and an engagement assembly 330, where the cross bar 320 is positioned below the frame portion 10, the link 310 has a right end (non-limiting) (see FIG. 2 ) pivotally connected to the support portion 20, and the engagement assembly 330 is fitted onto the cross bar 320. The left end (non-limiting) of the link 310 is pivotally connected to the engagement assembly 330. The engagement assembly 330 is operated to fix the engagement assembly 330 to the cross bar 320 or to slide the engagement assembly 330 relative to the cross bar 320.

[0035] The cross bar 320 may be provided at the center below the underside of the frame unit 10 along the longitudinal direction of the frame unit 10 (the left-right direction in FIG. 1 ). The cross bar 320 may have a hollow structure. Both ends of the cross bar 320 may be connected to the frame unit 10 or to a position where the frame unit 10 and the support unit 20 are joined, and optionally, both ends of the cross bar 320 may be fixed to the frame unit 10 or to a position where the frame unit 10 is connected to the support unit 20. The cross bar 320 may remain stationary while the support unit 20 pivots.

[0036] The cross bar 320 may be formed with a folding locking groove 321 and an unfolding locking groove 322 (shown in FIGS. 8 and 9). When the support part 20 is in the unfolded position, the engagement assembly 330 may be fixed to the unfolding locking groove 322 so that the frame part 10 is stably supported without shaking, and when the support part 20 is in the folded position, the engagement assembly 330 may be fixed to the folding locking groove 321 so that the support part 20 is maintained in the folded position and prevented from undesirably unfolding.

[0037] Optionally, the cross bar 320 may be provided with fixing grooves other than the folding fixing groove 321 and the unfolding fixing groove 322 so that the support part 20 can be held at a desired angle or position as needed.

[0038] In this embodiment, the cross bar 320 has one folding locking groove 321 and one unfolding locking groove 322 on each side. The present application does not limit the number of folding locking grooves 321 and unfolding locking grooves 322. Correspondingly, in this embodiment, the frame folding mechanism 30 may have two links 310 and two engagement assemblies 330. The present application does not limit the number of links 310 and engagement assemblies 330. Optionally, the cross bar 320 may have other numbers of folding locking grooves 321 and unfolding locking grooves 322, and the frame folding mechanism 30 may have other numbers of links 310. Optionally, the numbers of folding locking grooves 321 and unfolding locking grooves 322 correspond to the number of links 310 and the number of engagement assemblies 330. In this embodiment, the frame folding mechanism 30 has one cross bar 320. Optionally, the frame folding mechanism 30 may have other numbers of cross bars 320 that may be arranged parallel or at angles to one another.

[0039] As shown in Figures 2, 4, 6 to 8, the engagement assembly 330 includes a sleeve 331, an unlock button 332, an engagement portion 333, and a reset member 334, wherein the sleeve 331 is formed as a housing for the engagement assembly 330, the unlock button 332 is at least partially exposed to the outside of the sleeve 331 and is operable, the engagement portion 333 displaces (or moves a certain distance) in a direction away from the cross bar 320 (a first direction) in response to actuation of the unlock button 332, and the reset member 334 constantly applies a force to the engagement portion 333 in a direction toward the cross bar 320 relative to the unlock button 332 when the unlock button 332 is not actuated, so that the reset member 334 tends to displace the unlock button 332 in a direction toward the cross bar 320 (a second direction).

[0040] The sleeve 331 may be formed in a relatively flat, approximately hexahedral shape for easy gripping and operation. The unlocking buttons 332 may be two, one on each side of the sleeve 331, and may be easily activated by pressing inward (toward the horizontal bar 320) with fingers (e.g., thumb and index finger). Two unlocking buttons 332 may provide more stable fixation, and the two unlocking buttons 332 may be arranged symmetrically. Other numbers of unlocking buttons 332 may be used, and the present application does not limit the number of unlocking buttons 332.

[0041] 7 to 10, one side of the engagement portion 333 may have a receiving groove 3331. A lever member 335 may be provided between the unlock button 332 and the receiving groove 3331, so that when the reset member 334 is pressed inward (as indicated by the arrow in FIG. 7), the lever member 335 presses the engagement portion 333 outward via the receiving groove 3331.

[0042] The reset member 334 can be formed as an elastic member as shown in Figures 7 to 10. 334' in Figure 10 is the shape of the reset member 334 in its natural state. Therefore, when the reset member 334 is provided in the receiving grooves 3331 of the two engagement portions 333, the reset member 334 is in an elastically deformed state and can apply a certain inward force to the two engagement portions 333. The number of engagement portions 333 may be other numbers, and the present application does not limit the number of engagement portions 333.

[0043] In other embodiments, the reset member 334 may be formed as a spring disposed between the engagement portion 333 and the inner wall of the sleeve 331. The reset member 334 may have other configurations as long as it can apply an inward thrust to the engagement portion 333.

[0044] In other embodiments, the engagement assembly 330 may have one unlock button 332 and one engagement portion 333. The reset member 334 may be one, two or more, as required.

[0045] The outer dimensions of the engaging portion 333 can correspond to the dimensions of the folding locking groove 321 and the unfolding locking groove 322 so that the engaging portion 333 can fit snugly into the folding locking groove 321 or the unfolding locking groove 322 for retention. When the engaging portion 333 fits into the folding locking groove 321 or the unfolding locking groove 322, the gap between the engaging portion 333 and the folding locking groove 321 or the unfolding locking groove 322 is as small as possible, or a tight fit is formed. The elastic restoring force of the reset member 334 prevents the sleeve 331 from sliding easily, making the bed frame 1 more stable and less likely to shake when unfolded. More specifically, the unfolding locking groove 322 is a through-hole, and the engaging portion 333 fits directly into the through-hole, increasing the engagement area between the engaging portion 333 and the unfolding locking groove 322 for more secure positioning of the sleeve 331 and the cross bar 320. That is, the frame part 10 and the support part 20 are prevented from swinging relative to each other, ensuring the overall stability of the bed frame 1 after unfolding. In particular, under the action of the reset member 334, the engagement part 333 engages deeper into the through-hole, resulting in a larger engagement area, and the bed frame 1 is more stable and less likely to swing after unfolding. Meanwhile, since a large locking force is not required when folding, the folding locking groove 321 can be a sunken groove. In this way, a good positional fixation can be formed between the engagement part 333 and the folding locking groove 321, preventing the support part 20 from falling after folding and allowing the engagement part 333 to easily come out of the folding locking groove 321, facilitating unfolding of the support part 20, i.e., unfolding and using the bed frame 1.

[0046] The engagement portion 333 may be provided with a guide portion 3332. The guide portion 3332 may be a chamfered or tapered surface. The guide portion 3332 can guide the engagement portion 333 into the folding fixing groove 321 and / or the unfolding fixing groove 322. Due to the thrust from the guide portion 3332 and the reset member 334, when the guide portion 3332 contacts the folding fixing groove 321 or the unfolding fixing groove 322, the engagement portion 333 can automatically enter the folding fixing groove 321 or the unfolding fixing groove 322, or at least the force required to further move the engagement assembly 330 can be reduced.

[0047] 2 and 4, one end of the link 310 is pivotally connected to the support 20, and the other end of the link 310 is pivotally connected to the engagement assembly 330. The link 310 includes a first pivot shaft 311 rotatably provided on the engagement assembly 330, a second pivot shaft 312 rotatably provided on the support 20, a first link portion 313 connecting one end of the first pivot shaft 311 and the second pivot shaft 312, and a second link portion 314 connecting the other end of the first pivot shaft 311 and the second pivot shaft 312. The first link portion 313 and the second link portion 314 may be formed on both sides of the cross bar 320, respectively.

[0048] Optionally, the link 310 may have only the first link portion 313 or only the second link portion 314 .

[0049] The first link portion 313 and the second link portion 314 are formed in a curved shape and can be mirror images of each other. Optionally, the first link portion 313 and the second link portion 314 can be asymmetrical with respect to each other. The bent shape allows the link 310 to occupy less space below the frame portion 10 while stabilizing the support portion 20 relative to the frame portion 10.

[0050] The bending angle formed by the first link portion 313 and the second link portion 314 may be greater than 90°. The bending angle formed by the first link portion 313 and the second link portion 314 may be less than 180°. The bending formed by the first link portion 313 and the second link portion 314 may be a gradual transition.

[0051] Referring to FIG. 6, when the support part 20 is folded, the first link part 313 and the second link part 314 can be partially positioned above the cross bar 320 .

[0052] 8 to 14, the horizontal bar 320 may have recesses such as an upper recess 323 (see FIG. 14) and a lower recess 324. In the longitudinal direction of the horizontal bar 320, the upper recess 323 and the lower recess 324 are formed at positions corresponding to the folding and fixing groove 321 and / or the unfolding and fixing groove 322. Specifically, the upper recess 323 and the lower recess 324 may be formed as spherical recesses, and the center point of the upper recess 323 or the lower recess 324 may be biased toward the folding and fixing groove 321 or the unfolding and fixing groove 322. This allows the sleeve 331 to have an elastically deformable portion 336. The sleeve 331 may have an upper protrusion 337 and a lower protrusion 338 (see FIG. 14) that engage with the upper recess 323 and the lower recess 324. The upper protrusion 337 and the lower protrusion 338 may be provided on the inner surface of the elastically deformable portion 336 that faces the horizontal bar 320. When the engagement assembly 330 passes through the upper recess 323 and the lower recess 324, the upper protrusion 337 and the lower protrusion 338 of the elastic deformation portion 336 can enter into the upper recess 323 and the lower recess 324 due to the elasticity of the elastic deformation portion 336. This generates a certain resistance force when the engagement assembly 330 is further moved, indicating to the operator that it is approaching the folding lock groove 321 or the unfolding lock groove 322. When the upper protrusion 337 and the lower protrusion 338 of the elastic deformation portion 336 completely enter the upper recess 323 and the lower recess 324, the engagement portion 333 is perfectly aligned with the folding lock groove 321 or the unfolding lock groove 322. The cross bar 320 may have only one of the upper recess 323 and the lower recess 324. Therefore, the sleeve 331 may be provided with only one of the upper protrusion 337 and the lower protrusion 338. The upper recess 323 and the lower recess 324 may be provided in one or more, respectively, so as to correspond to the folding fixing groove 321, the unfolding fixing groove 322, or other fixing grooves as desired. The upper recess 323 or the lower recess 324 may be formed in a circular, elongated, rectangular, or other shape.

[0053] In another embodiment (not shown), the upper recess 323 and the lower recess 324 can be formed on the elastically deformable portion 336, and the upper protrusion 337 and the lower protrusion 338 can be formed on the cross bar 320. That is, the upper recess 323 and the lower recess 324 and the upper protrusion 337 and the lower protrusion 338 in this embodiment are interchanged with those in the previous embodiment.

[0054] Furthermore, the recesses 323, 324 and protrusions 337, 338 of the cross bar 320 and the elastic deformation portion 336 indicate the positions of the folding locking groove 321, the unfolding locking groove 322, or other locking grooves, so that even if the operator cannot directly observe the positions of the folding locking groove 321, the unfolding locking groove 322, or other locking grooves, the operator can still easily identify the positions. The positions of the protrusions 337, 338 and the recesses 323, 324 are interchangeable.

[0055] 11 to 14, the sleeve 331 may include an upper case 3311 and a lower case 3312 that cooperate with each other. The upper case 3311 and / or the lower case 3312 may be provided with an elastically deformable portion 336. The elastically deformable portion 336 may be provided on the upper case 3311 and / or the lower case 3312. That is, the elastically deformable portion 336 of the upper case 3311 and the lower case 3312 may be provided with protrusions 337 and 338 that fit into the recesses 323 and 324 of the horizontal bar 320. When the protrusions 337 and 338 are provided on the upper case 3311 and the lower case 3312, the horizontal bar 320 may be provided with corresponding recesses 323 and 324 on the upper and lower sides. In another embodiment (not shown), when recesses 323, 324 are provided in the upper case 3311 and the lower case 3312, the cross bar 320 may be provided with corresponding protrusions 337, 338 on the upper and lower sides.

[0056] 6, the horizontal height of both ends of the horizontal bar 320 can be greater than the horizontal height of the middle portion of the horizontal bar 320. In this way, when the support part 20 is folded, the first link part 313 and the part of the support part 20 that houses the first link part 313 do not interfere with the horizontal bar 320, and the support part 20 can be further folded to a basic horizontal position.

[0057] Other embodiments of the present application will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modifications, uses, or adaptations of the present application in accordance with the general principles of the present disclosure, including common sense or customary technical means known in the art but not disclosed herein. The specification and examples are considered to be exemplary only, with the true scope and spirit of the present application being indicated by the following claims.

[0058] Although the present specification has been enumerated and described with reference to exemplary embodiments, the terms used are exemplary and illustrative, rather than limiting. Since the present application can be specifically embodied in various forms without departing from the spirit and substance of the present application, the above-described embodiments should not be limited to the details set forth above, but should be interpreted in the broadest possible manner within the scope of the claims. Therefore, it should be understood that all changes falling within the scope of the claims or their equivalents should be embraced within the scope of the claims. [Explanation of symbols]

[0059] 1 bed frame 10 Frame section 20 Support part 30 Frame folding mechanism 310 Link 311 First Pivot Axis 312 Second Pivot Axis 313 First Link 314 Second Link 320 horizontal bar 321 Folding fixing groove 322 Deployment fixing groove 323 Upper recess 324 Lower recess 330 Engagement Assembly 331 Sleeve 3311 Upper case 3312 Lower case 332 Unlock button 333 Engagement part 3331 Receiving groove 3332 Guide part 334, 334' reset member 335 Lever member 336 Elastic deformation part 337 Upper projection 338 Lower protrusion

Claims

1. A frame folding mechanism for use in a bed frame including a frame portion and a support portion, a cross bar, a link, and an engagement assembly; the cross bar is positioned below the frame portion; the link has a first end pivotally connected to the support; The engagement assembly is fitted onto the cross bar; a second end of the link opposite the first end is pivotally connected to the engagement assembly, and the engagement assembly is manipulated to fix the engagement assembly to the cross bar or to slide the engagement assembly relative to the cross bar; A frame folding mechanism characterized by:

2. The engagement assembly can be secured to the cross bar in at least two positions.

2. The frame folding mechanism according to claim 1, wherein the frame folding mechanism comprises: a frame support;

3. The support part of the bed frame is rotatable relative to the frame part between an unfolded position and a folded position, and a folding fixing groove and an unfolded fixing groove are formed on the cross bar, and when the support part is in the unfolded position, the engagement assembly is fixed to the unfolded fixing groove, and when the support part is in the folded position, the engagement assembly is fixed to the folding fixing groove.

3. The frame folding mechanism according to claim 1 or 2.

4. the engagement assembly includes a sleeve, an unlock button, an engagement portion, and a reset member; The sleeve is formed as a housing for the engagement assembly; At least a portion of the unlock button is exposed to the outside of the sleeve and is operable; the engagement portion is displaced in a first direction in response to actuation of the unlock button, the reset member applies a force to the engagement portion in a second direction opposite to the first direction, so that when the unlock button is not actuated, the reset member tends to displace the engagement portion along the second direction.

4. The frame folding mechanism according to claim 3.

5. The outer circumferential dimension of the engaging portion corresponds to the dimension of the deployment fixing groove.

5. The frame folding mechanism according to claim 4.

6. The engaging portion is tightly fitted into the deployment fixing groove.

6. The frame folding mechanism according to claim 5, wherein the frame folding mechanism comprises:

7. The engagement assembly includes an unlocking button and an engagement portion, the unlocking button and the engagement portion are formed on both sides of the horizontal bar, and the horizontal bar includes a folding locking groove and an unfolding locking groove corresponding to the engagement portion; 5. The frame folding mechanism according to claim 4.

8. The engagement assembly has one or two reset members.

8. The frame folding mechanism according to claim 7, wherein:

9. The first direction is a direction away from the crossbar, and the second direction is a direction toward the crossbar.

5. The frame folding mechanism according to claim 4.

10. a guide portion is provided on the engaging portion, and the guide portion can guide the engaging portion to the folding fixing groove and / or the unfolding fixing groove; 5. The frame folding mechanism according to claim 4.

11. A recess is formed on the horizontal bar, and the recess is formed at a position corresponding to the folding fixing groove and / or the unfolding fixing groove in the longitudinal direction of the horizontal bar, and a protrusion is provided on the sleeve to engage with the recess; or a protrusion is formed on the horizontal bar, and the protrusion is formed at a position corresponding to the folding fixing groove and / or the unfolding fixing groove in the longitudinal direction of the horizontal bar, and a recess is provided on the sleeve to engage with the protrusion.

5. The frame folding mechanism according to claim 4.

12. When the recess is formed in the horizontal bar, an elastic deformation portion is formed in the sleeve, and the protrusion is provided on the inner surface of the elastic deformation portion, or when the protrusion is formed in the horizontal bar, an elastic deformation portion is formed in the sleeve, and the recess is provided on the inner surface of the elastic deformation portion.

12. The frame folding mechanism of claim 11.

13. The sleeve includes an upper case and a lower case that cooperate with each other, and the elastic deformation portion is provided on the upper case and / or the lower case.

13. The frame folding mechanism of claim 12.

14. the link includes a first pivot shaft, a second pivot shaft, a first link portion, and a second link portion; the first pivot shaft is rotatably provided on the support portion, the second pivot shaft is rotatably mounted on the engagement assembly; the first link portion is connected to one end of the first pivot shaft and one end of the second pivot shaft; the second link portion is connected to the other end of the first pivot shaft and the other end of the second pivot shaft, The first link portion and the second link portion are formed on both sides of the horizontal bar, respectively.

3. The frame folding mechanism according to claim 1 or 2.

15. The first link portion and the second link portion are formed in a bent shape and are mirror images of each other.

15. A frame folding mechanism according to claim 14.

16. The bending angle formed by the first link portion and the second link portion is greater than 90°.

16. A frame folding mechanism according to claim 15.

17. The horizontal height of both ends of the horizontal bar is greater than the horizontal height of the middle part of the horizontal bar.

3. The frame folding mechanism according to claim 1 or 2.

18. A frame folding mechanism comprising a frame portion, a support portion, and the frame folding mechanism according to claim 1 or 2. A bed frame characterized by:

19. The bed frame includes two support parts, the frame folding mechanism includes two links and two engagement assemblies, and the cross bar has a folding locking groove and an unfolding locking groove on both sides thereof.

19. A bed frame according to claim 18.

Images