Folding mechanism

Abstract

A folding mechanism is used for a baby crib and comprises a handrail pipe, a folding mechanism body and a folding mechanism body. A fixed seat; a locking member; and an operation member. The armrest tube is pivotable between a deployed position and a stowed position. And the side end of the fixed seat is pivoted with the armrest tube. The locking piece is movably connected to the pivot joint end of the armrest pipe in a sleeved mode, and the locking piece can slide between a first locking position and a first unlocking position. The operating piece is slidably connected to the fixing base and can slide between a second locking position and a second unlocking position. When the operating piece slides from the second locking position to the second unlocking position, the operating piece drives the locking piece to slide from the first locking position to the first unlocking position, and at the first locking position, the locking piece limits pivoting of the armrest pipe; in the first unlocking position, the locking member allows pivoting of the armrest tube. The folding mechanism is simple in structure, low in manufacturing cost and convenient to operate.

Description

Technical Field

[0001] The present application relates to the technical field of children's products, and in particular to a folding mechanism for a baby crib. Background Art

[0002] In order to facilitate storage and storage, a folding mechanism is often provided in a crib so that the crib can be folded up when not in use to reduce the occupied space. However, the common folding mechanisms currently have a complex structure and a high manufacturing cost. Summary of the invention

[0003] Based on this, it is necessary to provide a folding mechanism for a baby crib and a baby crib, which have a simple structure and low manufacturing cost.

[0004] According to one aspect of the present application, a folding mechanism is provided for a baby crib, the folding mechanism comprising: an armrest tube; a fixed seat; a locking member; and an operating member. The armrest tube is capable of pivoting between an unfolded position and a folded position. The side end of the fixed seat is pivotally connected to the armrest tube. The locking member is movably sleeved on the pivotal end of the armrest tube, and the locking member is capable of sliding between a first locking position and a first unlocking position. The operating member is slidably connected to the fixed seat, and the operating member is capable of sliding between a second locking position and a second unlocking position. When the operating member slides from the second locking position to the second unlocking position, the operating member drives the locking member to slide from the first locking position to the first unlocking position, and in the first locking position, the locking member restricts the pivoting of the armrest tube; in the first unlocking position, the locking member allows the pivoting of the armrest tube.

[0005] In the folding mechanism according to the embodiment of the present application, by operating the driving member, the locking member can be driven to the first unlocking position to allow the armrest tube to pivot relative to the fixing seat, thereby realizing the folding of the baby crib. The folding mechanism has a simple structure, low manufacturing cost, and convenient operation. Only the driving member needs to be operated to allow the armrest tube to pivot to fold the baby crib.

[0006] In one embodiment, the locking end of the locking member is provided with a matching bevel, and the operating member is provided with a driving bevel that is drivingly matched with the matching bevel. When the operating member slides from the second locking position to the second unlocking position, the driving bevel abuts against and presses against the matching bevel to drive the locking member to slide from the first locking position to the first unlocking position.

[0007] In one embodiment, a recessed portion is formed on the end surface of the locking end, and a bottom surface of the recessed portion is inclined relative to the end surface of the locking end to form the matching inclined surface.

[0008] In one embodiment, the operating member includes a driving portion extending along the longitudinal direction, the driving inclined surface is formed at an end of the driving portion, and the driving inclined surface is drivingly matched with the matching inclined surface in the recessed portion.

[0009] In one embodiment, the pivot end of the handrail tube is provided with a first hole, the locking member is provided with a second hole, and the fixing seat is provided with a third hole. The pivot member passes through the first hole, the second hole and the third hole to allow the handrail tube and the locking member to pivot relative to the fixing seat.

[0010] In one embodiment, the locking member comprises: a fixing portion; and a locking portion. The fixing portion is non-slidable in the axial direction of the handrail tube, and the second hole is provided on the fixing portion and is provided as a circular hole. The locking portion is slidably connected to the fixing portion, and the locking portion can slide along the axial direction of the handrail tube between the first locking position and the first unlocking position.

[0011] In one embodiment, the second hole is an elongated hole, so that the locking member can slide along the axial direction of the handrail tube between the first locking position and the first unlocking position.

[0012] In one embodiment, the folding mechanism further comprises a first elastic member, one end of which abuts against the fixing portion, and the other end of which abuts against the locking portion, and when the handrail tube is in the unfolded position, the first elastic member biases the locking portion toward the first locking position.

[0013] In one embodiment, the folding mechanism further comprises a first elastic member, one end of which abuts against the pivot member, and the other end of which abuts against the locking member, and when the handrail tube is in the unfolded position, the first elastic member biases the locking member toward the first locking position.

[0014] In one embodiment, a locking hole is formed inside the fixing seat. When the locking member is in the first locking position, the locking end of the locking member enters the locking hole to limit the pivoting of the handrail tube relative to the fixing seat. When the locking member is in the first unlocking position, the locking end of the locking member exits the locking hole to allow the handrail tube to pivot relative to the fixing seat.

[0015] In one embodiment, the locking hole is disposed on an upper side of the fixing seat and extends along a lateral direction of the fixing seat.

[0016] In one embodiment, the fixing seat is provided with a guide rib, which extends from the lower side of the locking hole to the lateral end of the fixing seat, and the side of the guide rib facing the handrail tube forms a guide arc surface, and when the handrail tube pivots relative to the fixing seat, the locking end of the locking piece slides on the guide arc surface.

[0017] In one embodiment, the fixing seat further includes a limiting portion, which is arranged on a side of the guide rib close to the lateral end of the fixing seat, and when the handrail tube is in the folded position, the limiting portion limits the pivoting of the handrail tube toward the unfolded position.

[0018] In one embodiment, the limiting portion includes a limiting step and a limiting surface, the limiting step is arranged between the limiting surface and the guiding arc surface, and the distance between the limiting surface and the pivot center of the handrail tube is greater than the distance between the guiding arc surface and the pivot center of the handrail tube.

[0019] In one embodiment, a receiving cavity is defined in the fixing seat, and the operating member is at least partially received in the receiving cavity.

[0020] In one embodiment, a connecting protrusion is provided on the operating member, and a connecting groove cooperating with the connecting protrusion is provided on the side wall of the accommodating cavity. When the operating member slides relative to the fixing seat, the connecting protrusion slides along the connecting groove.

[0021] In one embodiment, the connecting groove is an elongated groove extending along the longitudinal direction.

[0022] In one embodiment, the upper wall of the accommodating cavity is provided with a through hole, the through hole is connected to the locking hole, the operating member includes a driving portion extending along the longitudinal direction, the driving portion passes through the through hole and cooperates with the locking end of the locking member.

[0023] In one embodiment, the folding mechanism further includes a second elastic member, one end of the second elastic member abuts against the operating member, the other end of the second elastic member abuts against the fixing seat, and the second elastic member biases the operating member toward the second locking position.

[0024] In one embodiment, the fixing base comprises a bottom wall, and the bottom wall at least partially blocks the inner space of the fixing base.

[0025] In the folding mechanism according to this embodiment, the inner space of the fixing seat is shielded by the bottom wall. When the user performs the folding operation, the user's fingers are shielded by the bottom wall and cannot enter the inner space of the fixing seat. Thus, the risk of the user's fingers being pinched and injured by components in the inner space of the fixing seat, such as the operating member, the locking member, or a part of the handrail tube, is avoided.

[0026] According to one aspect of the present application, a baby crib is provided, including the armrest folding mechanism in the above-mentioned embodiment. The baby crib according to the embodiment of the present application has a simple structure and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other purposes, features and advantages of the present application will become clearer through a more specific description of the preferred embodiments of the present application shown in the accompanying drawings. The same reference numerals indicate the same parts in all the accompanying drawings, and the drawings are not deliberately scaled to the actual size, and the focus is on illustrating the subject matter of the present application.

[0028] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings.

[0029] Figure 1a is a schematic perspective view of a baby crib in an unfolded state according to an embodiment of the present application.

[0030] Figure 1b yes Figure 1a A schematic perspective view of a crib is shown from a bottom up perspective.

[0031] Figure 2 is a schematic perspective view of a baby crib in a folded state according to an embodiment of the present application.

[0032] Figure 3 It is a schematic diagram of the pivot end structure of a handrail tube according to an embodiment of the present application, wherein other parts of the handrail tube are omitted.

[0033] Figure 4a 3 is a schematic top view of a baby crib in an unfolded state according to an embodiment of the present application, wherein half of the structure of the baby crib is omitted, and wherein the locking member 30 is in a first locking position.

[0034] Figure 4b It is along Figure 4a A cross-sectional view taken along line AA is shown in FIG.

[0035] Figure 4c yes Figure 4b A partial enlarged view of part H in the middle.

[0036] Figure 5a3 is a schematic top view of a baby crib in an unfolded state according to an embodiment of the present application, wherein half of the structure of the baby crib is omitted, and wherein the locking member 30 is in a first locking position.

[0037] Figure 5b It is along Figure 5a A cross-sectional view taken along line BB is shown in FIG.

[0038] Figure 5c yes Figure 5b A partial enlarged view of part I.

[0039] Figure 6a 3 is a schematic top view of a baby crib in an unfolded state according to an embodiment of the present application, wherein half of the structure of the baby crib is omitted, and wherein the locking member 30 is in a first unlocking position.

[0040] Figure 6b It is along Figure 6a A cross-sectional view taken along line CC shown in FIG.

[0041] Figure 6c yes Figure 6b A partial enlarged view of part J in the middle.

[0042] Figure 7a 3 is a schematic top view of a baby crib in an unfolded state according to an embodiment of the present application, wherein half of the structure of the baby crib is omitted, and wherein the locking member 30 is in a first unlocking position.

[0043] Figure 7b It is along Figure 7a A cross-sectional view taken along line DD is shown in FIG.

[0044] Figure 7c yes Figure 7b A partial enlarged view of part K in the middle.

[0045] Figure 8a is a schematic top view of a crib in a folded state according to an embodiment of the present application.

[0046] Figure 8b It is along Figure 8a A cross-sectional view taken along line EE is shown in FIG.

[0047] Figure 8c yes Figure 8b A partial enlarged view of the L part.

[0048] Fig. 9 It is a schematic structural diagram of a locking member according to an embodiment of the present application.

[0049] Fig.10 It is a schematic structural diagram of a fixing base according to an embodiment of the present application.

[0050] Fig.11 It is a schematic structural diagram of an operating element according to an embodiment of the present application.

[0051] Reference numerals list

[0052] 1. Folding mechanism, 2. Baby bed,

[0053] 10. Handrail tube, 101. Pivot end, 1011. First hole

[0054] 20. fixing seat, 201. locking hole, 202. third hole, 203. accommodating cavity, 204. connecting groove, 205. through hole, 206. guide rib, 2061. guide arc surface, 207. limiting part, 2071. limiting step, 2072. limiting surface,

[0055] 30. locking member, 301. locking end, 3011. matching inclined surface, 3012. end surface, 3013. recessed portion,

[0056] 3014, anti-rotation part, 302, second hole,

[0057] 40. operating member, 401. driving portion, 4011. driving inclined surface,

[0058] 50. Pivot joint,

[0059] 60. a first elastic member,

[0060] 70. a second elastic member,

[0061] 80. Support column. DETAILED DESCRIPTION

[0062] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0063] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component and integrated with it, or there may be an intermediate component. The terms "installed", "one end", "the other end" and similar expressions used in this article are for illustrative purposes only.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0065] refer to Figure 1a , Figure 1b and Figure 2 An embodiment of the present application provides a baby bed 2, which includes a folding mechanism 1 and a support column 80. The user can operate the folding mechanism 1 to turn the baby bed 2 into a Figure 1a and Figure 1b Expanded state shown collapsed to Figure 2 In the present application, the direction perpendicular to the horizontal surface on which the crib 2 is placed is defined as the "longitudinal direction", as shown in the direction D1 in FIG1 . Figure 3 , Figure 4a , Figure 4b and Figure 4c In this application, Figure 4b The left and right directions shown in are defined as "horizontal directions", such as Figure 4b As shown in the direction D2 in the figure, the direction D2 is perpendicular to the direction D1. In one embodiment, the folding mechanism 1 includes: a handrail tube 10; a fixed seat 20; a locking member 30; and an operating member 40. The handrail tube 10 includes a pivot end 101, which is inserted into and pivoted in the fixed seat 20. The side end of the fixed seat 20 is pivoted to the handrail tube 10. The handrail tube 10 can pivot between the unfolded position and the folded position relative to the fixed seat 20. The locking member 30 is at least partially movably sleeved in the inner hole of the pivot end 101 of the handrail tube 10. The locking member 30 can slide between a first locking position and a first unlocking position. The operating member 40 is slidably connected to the fixed seat 20 and can slide between a second locking position and a second unlocking position. When the operating member 40 slides from the second locking position to the second unlocking position, the operating member 40 can drive the locking member 30 to slide from the first locking position to the first unlocking position. In the first locking position, the locking member 30 restricts the pivoting of the armrest tube 10 relative to the fixing seat 20; in the first unlocking position, the locking member 30 allows the pivoting of the armrest tube 10 relative to the fixing seat 20. Specifically, the user operates the operating member 40 so that the operating member 40 slides from the second locking position to the second unlocking position, and the operating member 40 further drives the locking member 30 to slide from the first locking position to the first unlocking position. Thus, the locking member 30 releases the locking of the pivoting of the armrest tube 10, and the user can pivot the armrest tube 10 from the unfolded position to the folded position to achieve the folding of the crib 2.

[0066] Combined with reference Figure 4c and Fig. 9 In one embodiment, the locking end 301 of the locking member 30 is provided with a matching bevel 3011, and the operating member 40 is provided with a driving bevel 4011 that is drivingly matched with the matching bevel 3011. When the operating member 40 slides from the second locking position to the second unlocking position, the driving bevel 4011 abuts against and presses against the matching bevel 3011 to drive the locking member 30 to slide from the first locking position to the first unlocking position. A locking hole 201 is formed inside the fixing seat 20. When the locking member 30 is in the first locking position, the locking end 301 enters the locking hole 201 to limit the pivoting of the handrail tube 10 relative to the fixing seat 20. When the locking member 30 is in the first unlocking position, the locking end 301 exits the locking hole 201 to allow the pivoting of the handrail tube 10 relative to the fixing seat 20.

[0067] Combined with reference Figure 4c and Figure 6c ,exist Figure 4c In the embodiment, the locking member 30 is in the first locking position, and the operating member 40 is in the second locking position; Figure 6c In the embodiment, the locking member 30 is in the first unlocking position, and the operating member 40 is in the second unlocking position. Figure 4c In the state shown, the locking end 301 of the locking member 30 is inserted into the locking hole 201, and the driving inclined surface 4011 of the operating member 40 does not apply pressure to the matching inclined surface 3011 of the locking member 30, or only applies slight pressure to the matching inclined surface 3011, so that the locking end 301 of the locking member 30 will not be withdrawn from the locking hole 201. At this time, since the portion other than the locking end 301 of the locking member 30 is inserted into the inner hole of the pivot end 101 of the handrail tube 10, and the locking end 301 of the locking member 30 is inserted into the locking hole 201, the handrail tube 10 cannot pivot relative to the fixing seat 20. Figure 4c In the state shown, the user operates, for example, presses, the operating member 40, and the driving inclined surface 4011 of the operating member 40 applies pressure to the matching inclined surface 3011 of the locking member 30. Through the driving cooperation between the driving inclined surface 4011 and the matching inclined surface 3011, the locking member 30 slides in a direction away from the locking hole 201 until the locking end 301 of the locking member 30 exits the locking hole 201. At this time, the handrail tube 10 can pivot relative to the fixing seat 20.

[0068] Continue to refer Fig. 9 In one embodiment, the locking member 301 is a substantially cylindrical body. Optionally, the locking member 301 may also be in other suitable shapes, such as a prism, etc., as long as the matching requirements with the pivot end 101 and the locking hole 201 of the handrail tube 10 are met. The end surface 3012 of the locking end 301 is formed with a recessed portion 3013, and the bottom surface of the recessed portion 3013 is inclined relative to the end surface 3012 of the locking end 301 to form a matching inclined surface 3011.

[0069] refer to Figure 5c and Figure 7c ,exist Figure 5c In the embodiment, the locking member 30 is in the first locking position, and the operating member 40 is in the second locking position; Figure 7c In the embodiment, the locking member 30 is in the first unlocking position, and the operating member 40 is in the second unlocking position. In one embodiment, the portion of the locking end 301 of the locking member 30 other than the recessed portion 3013 forms a rotation stop portion 3014. Figure 5c In the state shown, the locking end 301 of the locking member 30 is inserted into the locking hole 201, and the engagement between the anti-rotation portion 3014 and the inner wall of the locking hole 201 can prevent the locking member 30 from pivoting, thereby preventing the handrail tube 10 from pivoting relative to the fixing seat 20. Figure 7c In the state shown, the locking end 301 of the locking member 30 exits the locking hole 201 , and the handrail tube 10 can pivot relative to the fixing seat 20 .

[0070] refer to Fig.11 In one embodiment, the operating member 40 includes a driving portion 401 extending along the longitudinal direction, and a driving inclined surface 4011 is formed on the end of the driving portion 401 , and the driving inclined surface 4011 can be driven to cooperate with the matching inclined surface 3011 in the recessed portion 3013 .

[0071] Combined with reference Figure 4c , Fig. 9 and Fig.10 Specifically, the end of the driving portion 401 of the operating member 40 enters the recessed portion 3013 of the locking end 301 of the locking member 30, thereby making the driving inclined surface 4011 and the matching inclined surface 3011 contact each other to achieve driving cooperation between the two.

[0072] Combined with reference Figure 2 , Figure 3 , Figure 4c and Fig.10 In one embodiment, the pivot end 101 of the handrail tube 10 is provided with a first hole 1011, the locking member 30 is provided with a second hole 302, and the fixing seat 20 is provided with a third hole 202. The pivot member 50 passes through the first hole 1011, the second hole 302 and the third hole 202 to allow the handrail tube 10 and the locking member 30 to rotate relative to the fixing seat 20 around the pivot axis X (reference Figure 2 Optionally, the second hole 302 is an elongated hole, so that the locking member 30 can slide along the axial direction of the handrail tube 10 between the first locking position and the first unlocking position.

[0073] refer to Figure 4cIn one embodiment, the folding mechanism 1 further includes a first elastic member 60, one end of the first elastic member 60 abuts against the pivot member 50, and the other end of the first elastic member 60 abuts against the locking member 30. When the handrail tube 10 is in the unfolded position, the first elastic member 60 biases the locking member 30 toward the first locking position. In this embodiment, the first elastic member 60 is a spring. Optionally, the first elastic member 60 can also be other suitable elastic elements, such as springs, torsion springs, etc., as long as the requirement of biasing the locking member 30 toward the first locking position is met. Figure 4cAs shown, since the first elastic member 60 biases the locking member 30 toward the first locking position, the locking end 301 of the locking member 30 always has a movement tendency to slide toward the locking hole 201. When no external force acts on the operating member 40, the locking end 301 of the locking member 30 is maintained in the locking hole 201 under the action of the first elastic member 60, that is, the locking member 30 is maintained in the first locking position. In this way, on the one hand, the baby bed can be kept in the unfolded state for convenient use, and on the other hand, the baby bed can be prevented from being unexpectedly folded to ensure safety in use. In this embodiment, one end of the first elastic member 60 abuts against the pivot member 50, and the other end of the first elastic member 60 abuts against the locking member 30, and the pivot member 50 can slide in the second hole 302 in the form of a long slot hole to realize the sliding of the locking member 30 between the first locking position and the first unlocking position along the axial direction of the handrail tube 10. In other embodiments not shown, the locking member 30 may also include a fixing portion and a locking portion, and the locking portion is slidably connected to the fixing portion. For example, the locking portion is sleeved in the fixing portion, and the locking portion is retractable relative to the fixing portion. The locking end 301 is arranged at one end of the locking part away from the fixing part. In such an embodiment, the structure of the locking end 301 is the same as that of the locking end 301 in the aforementioned embodiment. The second hole 302 is arranged on the fixing part and is arranged as a circular hole. The diameter of the second hole is slightly larger than the outer diameter of the pivot member 50 to allow the pivot member 50 to pass through the second hole 302. When the pivot member 50 passes through the first hole 1011, the second hole 302 and the third hole 202, the fixing part cannot slide in the axial direction of the handrail tube 10. One end of the first elastic member 60 abuts against the fixing part, and the other end of the first elastic member 60 abuts against the locking part, whereby the locking part is slidably connected to the fixing part through the first elastic member 60, and the locking part can slide between the first locking position and the first unlocking position along the axial direction of the handrail tube 10. The first elastic member 60 biases the locking part toward the first locking position, and the locking end 301 of the locking part always has a movement tendency to slide toward the locking hole 201. When no external force acts on the operating member 40, the locking end 301 of the locking member 30 is held in the locking hole 201 by the first elastic member 60, so that the handrail tube 10 cannot pivot relative to the fixing seat 20. When the operating member 40 is driven by an external force, the driving inclined surface 4011 of the operating member 40 applies pressure to the matching inclined surface 3011 of the locking end 301, and the locking end 301 of the locking member 30 slides in a direction away from the locking hole 201 until it completely exits the locking hole 201, so that the handrail tube 10 can pivot relative to the fixing seat 20.

[0074] Combined with reference Figure 4c and Fig.10In one embodiment, a receiving cavity 203 is defined in the fixing seat 20, and the operating member 40 is at least partially received in the receiving cavity 203. The folding mechanism 1 also includes a second elastic member 70, one end of the second elastic member 70 abuts against the operating member 40, and the other end of the second elastic member 70 abuts against the fixing seat 20, and the second elastic member 70 biases the operating member 40 toward the second locking position. In the present embodiment, the second elastic member 70 is a spring. Optionally, the second elastic member 70 can also be other suitable elastic elements, such as a spring, a torsion spring, etc., as long as the operating member 40 is biased toward the second locking position. Since the second elastic member 70 biases the operating member 40 toward the second locking position, the operating member 40 always has a tendency to move downward in the longitudinal direction. When no external force acts on the operating member 40, the operating member 40 remains in the second locking position. At this time, the driving inclined surface 4011 of the operating member 40 does not apply pressure to the matching inclined surface 3011 of the locking member 30, or only applies a slight pressure to the matching inclined surface 3011. The locking end 301 of the locking member 30 is maintained in the locking hole 201 under the action of the first elastic member 60, that is, the release member 40 is maintained in the second locking position, and the locking member 30 is maintained in the first locking position.

[0075] Combined with reference Figure 4c , Fig.10 and Fig.11 In one embodiment, a connecting protrusion 402 is provided on the operating member 40, and a connecting groove 204 matching with the connecting protrusion 402 is provided on the side wall of the accommodating cavity 203. When the operating member 40 slides relative to the fixing seat 20, the connecting protrusion 402 slides along the connecting groove 204. The connecting groove 204 is an elongated groove extending along the longitudinal direction. Specifically, the position of the lower end of the connecting groove 204 in the longitudinal direction is set so that when the operating member 40 slides to make the connecting protrusion 402 abut against the lower end of the connecting groove 204 in the longitudinal direction, the operating member 40 can be in the second locking position; the position of the upper end of the connecting groove 204 in the longitudinal direction is set so that when the operating member 40 slides to make the connecting protrusion 402 abut against the upper end of the connecting groove 204 in the longitudinal direction, the operating member 40 can be in the second unlocking position.

[0076] refer to Fig.10 The upper wall of the accommodating cavity 203 is provided with a through hole 205, the through hole 205 is connected with the locking hole 201, and the driving part 401 passes through the through hole 205 to cooperate with the locking end 301 of the locking member 30. Optionally, the locking hole 201 is provided on the upper side of the fixing seat 20 and extends along the lateral direction of the fixing seat 20.

[0077] Combined with reference Figure 6c and Figure 8cThe fixing seat 20 is provided with a guide rib 206, which extends from the lower side of the locking hole 201 to the lateral end of the fixing seat 20. The side of the guide rib 206 facing the handrail tube 10 forms a guide arc surface 2061. When the handrail tube 10 pivots relative to the fixing seat 20, the locking end 301 of the locking member 30 slides on the guide arc surface 2061. Specifically, when the locking member 30 is in Figure 6c In the first unlocked state shown, the user moves the handrail tube 10 from the unfolded position around the axis X (reference Figure 2 ) pivot to Figure 8c Shown in collapsed position.

[0078] Continue to refer Figure 6c and Figure 8c In one embodiment, the fixing seat 20 further includes a limiting portion 207, which is disposed on one side of the guide rib 206 close to the lateral end of the fixing seat 20. When the handrail tube 10 is in the folded position, the limiting portion 207 limits the pivoting of the handrail tube 10 toward the unfolded position. The limiting portion 207 includes a limiting step 2071 and a limiting surface 2072, and the limiting step 2071 is disposed between the limiting surface 2072 and the guide arc surface 2061. The fixing seat 20 further includes a bottom wall 208 and a side wall 209. The limiting surface 2072 is disposed on one side of the bottom wall 209 facing the internal space of the fixing seat 20. The bottom wall 209 at least partially blocks the internal space of the fixing seat 20.

[0079] In this embodiment, the guide arc surface 2061, the limiting step 2071, the limiting surface 2072 and the side wall 209 together define a rotation space. When the handrail tube 10 pivots, the pivot end 101 of the handrail tube 10 pivots in the rotation space, and the locking end 301 of the locking member 30 slides on the guide arc surface 2061, the limiting step 2071 and the limiting surface 2072. Figure 6c The deployed position shown is pivoted to Figure 8c When the handrail tube 10 is in the folded position as shown, the pivot end 101 of the handrail tube 10 pivots from a substantially horizontal position to a substantially vertical position. Under the action of the second elastic member 60, the locking end 301 of the locking member 30 presses against and slides on the guide arc surface 2061, the limiting step 2071 and the limiting surface 2072 in sequence. When the locking end 301 slides over the limiting step 2071 and reaches the limiting surface 2072, since the distance W between the limiting surface 2072 and the pivot center of the handrail tube 10 is greater than the distance R between the guide arc surface 2061 and the pivot center of the handrail tube 10, the locking member 30 extends a short distance away from the pivot center under the action of the second elastic member 60 to press against the limiting surface 2072. At this time, the anti-rotation portion 3014 of the locking member 30 will abut against the limiting surface 2072, thereby preventing the handrail tube 10 from pivoting toward the unfolded position, which is used to prevent the handrail tube 10 in the folded position from being accidentally unfolded, thereby improving the safety of use.

[0080] In this embodiment, the limiting step 2071 has an arcuate surface. When the handrail tube 10 has a tendency to pivot toward the deployed position, the engagement of the arcuate surface with the stopper 3014 can apply pressure toward the pivot center to the stopper 3014. As the tendency of the handrail tube 10 to pivot toward the deployed position increases, for example, as the force driving the handrail tube 10 to pivot toward the deployed position increases, the pressure toward the pivot center applied by the arcuate surface to the stopper 3014 increases. When the pressure toward the pivot center applied by the arcuate surface to the stopper 3014 is greater than the elastic force provided by the second elastic member 60, the stopper 3014 of the locking member 30 retracts toward the pivot center, and the stopper 3014 can slide over the limiting step 2071 to the guide arcuate surface 2061. At this point, the limiting step 2071 no longer hinders the pivoting of the handrail tube 10 toward the deployed position. Specifically, during use, the user only needs to apply a certain external force to the armrest tube 10 to overcome the obstruction of the limiting step 2071 , so that the armrest tube 10 pivots toward the unfolded position to unfold the crib 2 .

[0081] Reference again Fig.10 The bottom wall 208 at least partially blocks the internal space of the fixing seat 20. When the user presses the operating portion 40, the user's finger will be blocked by the bottom wall 208 and will not enter the internal space of the fixing seat 20. This avoids the risk of the user's finger being pinched by components in the internal space of the fixing seat 20 (such as the operating member 40, the locking member 30 or the pivot end 101 of the handrail tube 10, etc.). Optionally, the fixing seat 20 further includes a side wall, which at least partially blocks the internal space of the fixing seat 20 to prevent the user's finger from being pinched by extending into the fixing seat from the side of the fixing seat.

[0082] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A folding mechanism (1) for a baby crib (2), It is characterized in that include: An armrest tube (10) capable of pivoting between an extended position and a retracted position; A fixing seat (20), the side end of which is pivotally connected to the handrail tube (10); A locking member (30), the locking member (30) being movably sleeved on the pivot end (101) of the handrail tube (10), and the locking member (30) being capable of sliding between a first locking position and a first unlocking position; and An operating member (40) is slidably connected to the fixing seat (20), and the operating member (40) is capable of sliding between a second locking position and a second unlocking position. When the operating member (40) slides from the second locking position to the second unlocking position, the operating member (40) drives the locking member (30) to slide from the first locking position to the first unlocking position. Wherein, in the first locking position, the locking member (30) limits the pivoting of the handrail tube (10); and in the first unlocking position, the locking member (30) allows the pivoting of the handrail tube (10).

2. The folding mechanism (10) according to claim 1, It is characterized in that The locking end (301) of the locking member (30) is provided with a matching bevel (3011), and the operating member (40) is provided with a driving bevel (4011) that is driven and matched with the matching bevel (3011). When the operating member (40) slides from the second locking position to the second unlocking position, the driving bevel (4011) abuts against and presses against the matching bevel (3011) to drive the locking member (30) to slide from the first locking position to the first unlocking position.

3. The folding mechanism (10) according to claim 2, It is characterized in that The end surface (3012) of the locking end (301) is formed with a recessed portion (3013), and the bottom surface of the recessed portion (3013) is inclined relative to the end surface (3012) of the locking end (301) to form the matching inclined surface (3011).

4. The folding mechanism (10) according to claim 3, It is characterized in that The operating member (40) comprises a driving portion (401) extending along the longitudinal direction, the end of the driving portion (401) is formed with the driving inclined surface (4011), and the driving inclined surface (4011) is drivingly matched with the matching inclined surface (3011) in the recessed portion (3013).

5. The folding mechanism (10) according to claim 1, It is characterized in that The pivot end (101) of the handrail tube (10) is provided with a first hole (1011), the locking member (30) is provided with a second hole (302), and the fixing seat (20) is provided with a third hole (202); the pivot member (50) passes through the first hole (1011), the second hole (302) and the third hole (202) to allow the handrail tube (10) and the locking member (30) to pivot relative to the fixing seat (20).

6. The folding mechanism (10) according to claim 5, It is characterized in that The locking member (30) comprises: A fixing portion which is non-slidable in the axial direction of the handrail tube (10), wherein the second hole (302) is arranged on the fixing portion and is arranged as a circular hole; and A locking portion is slidably connected to the fixing portion, and the locking portion is capable of sliding along the axial direction of the handrail tube (10) between the first locking position and the first unlocking position.

7. The folding mechanism (10) according to claim 5, It is characterized in that The second hole (302) is an elongated hole, so that the locking member (30) can slide along the axial direction of the handrail tube (10) between the first locking position and the first unlocking position.

8. The folding mechanism (10) according to claim 6, It is characterized in that It also includes a first elastic member (60), one end of the first elastic member (60) abuts against the fixing portion, and the other end of the first elastic member (60) abuts against the locking portion, and when the handrail tube (10) is in the unfolded position, the first elastic member (60) biases the locking portion toward the first locking position.

9. The folding mechanism (10) according to claim 7, It is characterized in that It also includes a first elastic member (60), one end of the first elastic member (60) abuts against the pivot member (50), and the other end of the first elastic member (60) abuts against the locking member (30), and when the handrail tube (10) is in the unfolded position, the first elastic member (60) biases the locking member (30) toward the first locking position.

10. The folding mechanism (10) according to claim 1, It is characterized in that A locking hole (201) is formed inside the fixing seat (20). When the locking member (30) is in the first locking position, the locking end (301) of the locking member (30) enters the locking hole (201) to limit the pivoting of the handrail tube (10) relative to the fixing seat (20); When the locking member (30) is in the first unlocking position, the locking end (301) of the locking member (30) exits the locking hole (201) to allow the handrail tube (10) to pivot relative to the fixing seat (20).

11. The folding mechanism (10) according to claim 10, It is characterized in that The locking hole (201) is arranged on the upper side of the fixing seat (20) and extends along the transverse direction of the fixing seat (20).

12. The folding mechanism (10) according to claim 10, It is characterized in that The fixing seat (20) is provided with a guide rib (206), and the guide rib (206) extends from the lower side of the locking hole (201) to the lateral end of the fixing seat (20), and a guide arc surface (2061) is formed on the side of the guide rib (206) facing the handrail tube (10), and when the handrail tube (10) pivots relative to the fixing seat (20), the locking end (301) of the locking member (30) slides on the guide arc surface (2061).

13. The folding mechanism (10) according to claim 12, It is characterized in that The fixing seat (20) further comprises a limiting portion (207), wherein the limiting portion (207) is arranged on one side of the guide rib (206) close to the lateral end of the fixing seat (20), and when the handrail tube (10) is in the folded position, the limiting portion (207) limits the pivoting of the handrail tube (10) toward the unfolded position.

14. The folding mechanism (10) according to claim 13, It is characterized in that The limiting portion (207) comprises a limiting step (2071) and a limiting surface (2072); the limiting step (2071) is arranged between the limiting surface (2072) and the guiding curved surface (2061); and the distance between the limiting surface (2072) and the pivot center of the handrail tube (10) is greater than the distance between the guiding curved surface (2061) and the pivot center of the handrail tube (10).

15. The folding mechanism (10) according to claim 10, It is characterized in that The fixing seat (20) defines an accommodation cavity (203) therein, and the operating member (40) is at least partially accommodated in the accommodation cavity (203).

16. The folding mechanism (10) according to claim 15, It is characterized in that The operating member (40) is provided with a connecting protrusion (402), and the side wall in the accommodating cavity (203) is provided with a connecting groove (204) that cooperates with the connecting protrusion (402); when the operating member (40) slides relative to the fixing seat (20), the connecting protrusion (402) slides along the connecting groove (204).

17. The folding mechanism (10) according to claim 16, It is characterized in that The connecting groove (204) is an elongated groove extending along the longitudinal direction.

18. The folding mechanism (10) according to claim 15, It is characterized in that The upper wall of the accommodating cavity (203) is provided with a through hole (205), the through hole (205) is connected to the locking hole (201), the operating member (40) comprises a driving portion (401) extending along the longitudinal direction, the driving portion (401) passes through the through hole (205) and cooperates with the locking end (301) of the locking member (30).

19. The folding mechanism (10) according to claim 1, It is characterized in that It also includes a second elastic member (70), one end of the second elastic member (70) abuts against the operating member (40), the other end of the second elastic member (70) abuts against the fixing seat (20), and the second elastic member (70) biases the operating member (40) toward the second locking position.

20. The folding mechanism (10) according to claim 1, It is characterized in that The fixing seat (20) comprises a bottom wall (208), and the bottom wall (208) at least partially blocks the internal space of the fixing seat (20).

21. A baby crib (2), comprising the armrest folding mechanism (10) according to any one of claims 1 to 20.

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