A support foldable baby bath stand

Abstract

The utility model discloses a child shower frame with foldable support, aiming at solving the core defects of traditional products, such as single-stage locking failure, poor reliability of wet hand operation and low utilization rate of folding space. It comprises a base and a support rotatably arranged thereon. A composite locking system is arranged between the base and the support. The second locking mechanism automatically drives the clamping block to be embedded in the lock hole of the support when the base bears weight, realizing gravity self-locking without human intervention. The first locking mechanism adopts a wrench structure, and the end of the wrench structure is forced to engage with the support locking stop platform to form a mechanical dead lock. The first locking mechanism and the second locking mechanism work independently and cooperatively to ensure that accidental folding can be prevented when single-stage failure occurs. The wrench design eliminates the hidden danger of wet hand operation. In combination with the folding mechanism of the handrail, the folding plate configuration significantly reduces the packaging cost.

Description

[Technical Field]

[0001] This utility model relates to the field of infant and toddler care products, and in particular to a children's bath rack with a foldable support. [Background Technology]

[0002] Currently, most children's bath racks on the market suffer from structural defects that make it difficult to balance safety and convenience. Traditional designs often employ a single locking mechanism for the folding mechanism: some products rely on manual latches or buckles, but users can easily cause the lock to fail due to carelessness; others use load-bearing trigger locking, but these are only single-stage locking mechanisms, still posing a risk of accidental unlocking under vibration or lateral force. If such products are accidentally folded during a baby's bath, it could lead to serious safety accidents and fails to meet mandatory safety standards for children's products.

[0003] Furthermore, traditional designs often overlook a crucial point: caregivers frequently need to operate with one hand, and their hands are often slippery. Manual locking mechanisms, such as knob-type buckles, require a certain amount of force, which can easily lead to operational errors when hands are wet. Moreover, it is difficult to visually determine whether some buckles are fully engaged, leaving the risk of "false locking." This kind of safety mechanism that relies on the user's subjective judgment is not safe.

[0004] Furthermore, traditional children's bath racks suffer from poor transportation efficiency due to structural design flaws. Their folding mechanisms only achieve a superficial folding, with many ineffective spaces remaining between components. Even after folding, they retain a three-dimensional frame shape, requiring extensive cushioning material in the packaging, yet still struggling to prevent component collisions. This results in a triple burden of wasted transportation space, redundant protection, and excessive manpower, leading to persistently high transportation costs.

[0005] Therefore, this utility model was developed to address the aforementioned problems. [Utility Model Content]

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a foldable children's bath rack, aiming to solve the core defects of traditional products such as easy failure of single-level locking, poor reliability of operation with wet hands, and low utilization of folding space. It includes a base and a bracket rotatably mounted on it, with a composite locking system between the base and the bracket: a second locking mechanism drives a locking block to engage with the locking hole of the bracket when the base bears a preset load, achieving gravity self-locking without human intervention; the first locking mechanism adopts a wrench structure, with its end locking protrusion forcibly engaging the locking stop of the bracket to form a mechanical lock. The second and first locking mechanisms work independently and collaboratively to ensure that accidental folding is prevented even if a single-level mechanism fails; the wrench design eliminates the risk of operation with wet hands; combined with the folding mechanism of the armrest, the folded flat structure significantly reduces packaging costs.

[0007] To solve the above-mentioned technical problems, this utility model provides a foldable children's bath rack, comprising:

[0008] Base 1, for resting against the ground;

[0009] The bracket 2, the lower part of which is rotatably connected to the base 1 via a pivot 21;

[0010] Handrail 3 is provided on the upper part of the bracket 2;

[0011] A first locking mechanism 6 is disposed between the base 1 and the lower part of the bracket 2. The first locking mechanism 6 locks the two together when the bracket 2 is unfolded relative to the base 1.

[0012] The second locking mechanism 5 is disposed between the base 1 and the lower part of the bracket 2, and includes: a movable locking block 52 and a locking hole 53. The locking hole 53 is disposed at the bottom of the bracket 2. The locking block 52 is disposed vertically on the base and can be inserted and engaged with the locking hole 53 to lock the base 1 and the bracket 2.

[0013] The second locking mechanism 5 is configured such that when the bracket 2 is unfolded relative to the base 1 and locked by the first locking mechanism 6, and the base 1 abuts against the ground and bears a preset load, the locking block 52 is inserted into the locking hole 53 to lock the bracket 2 relative to the base 1 again.

[0014] As described above, in a foldable children's bath stand, the bracket 2 is unfolded relative to the base 1 and locked by the first locking mechanism 6. When the base 1 is in contact with the ground and bears a preset load, the locking block 52 is inserted into the locking hole 53 to lock the bracket 2 relative to the base 1 again. When the base 1 is in contact with the ground and the preset load disappears or decreases, the locking block 52 elastically exits the locking hole 53.

[0015] As described above, a foldable children's bath rack has a pressure-bearing surface 521 at the bottom of the locking block 52. The pressure-bearing surface 521 is configured such that when the base 1 is placed on the ground, the pressure-bearing surface 521 contacts the ground; when the base 1 bears a preset load, the ground generates a vertically upward reverse force, which drives the locking block 52 to move upward and embed into the locking hole 53.

[0016] As described above, in a foldable child bath stand, the first locking mechanism 6 includes:

[0017] The wrench 61 is hinged to the base 1 via a hinge shaft 64, and its end is provided with a locking protrusion 611.

[0018] A locking baffle 62 is mounted on the bracket 2;

[0019] The wrench 61 can rotate around the hinge axis 64 between the locking position and the unlocking position. When the wrench 61 is in the locking position, the locking protrusion 611 abuts against the locking stop 62 to form a first locking mechanism. When the wrench 61 rotates to the unlocking position, the locking protrusion 611 disengages from the locking stop 62 to unlock.

[0020] As described above, in a foldable children's bath stand, the first locking mechanism 6 further includes an elastic reset member configured to keep the wrench 61 in the locked position under normal conditions.

[0021] As described above, in a foldable children's bathing stand, the elastic reset element is a torsion spring 63, which is sleeved on the hinge shaft 64 of the wrench 61; one end of the torsion spring 63 is fixed to the base 1, and the other end abuts against the wrench 61, and its pre-tightening force drives the wrench 61 toward the locking position.

[0022] As described above, in a foldable child bath stand, the second locking mechanism 5 further includes:

[0023] A sliding groove 51 is provided through the base 1; the locking block 52 is slidably disposed in the sliding groove 51, and the top end of the locking block 52 extends to the bottom area of ​​the bracket 2;

[0024] The return spring 54 has two ends that abut against the inner wall of the slide groove 51 and the locking block 52 respectively. Under normal conditions, it pushes the locking block 52 to the lower unlock position, so that the top of the locking block 52 is below the lock hole 53.

[0025] As described above, in a foldable children's bath stand, an anti-detachment structure is provided between the locking block 52 and the base 1, the anti-detachment structure comprising:

[0026] A screw hole 511 is provided on the side wall of the slide groove 51;

[0027] Through hole 522, penetrating the locking block 52;

[0028] The anti-loosening screw has its shank passing through the through hole 522 and threadedly connected to the screw hole 511;

[0029] The shank of the anti-loosening screw is clearance-fitted with the through hole 522. The head diameter of the anti-loosening screw is larger than the hole diameter of the through hole 522. The anti-loosening screw is configured such that when the locking block 52 moves down to the lower unlocked position under the action of the reset spring 54, the head of the anti-loosening screw abuts against the locking block 52 to form a limit, preventing the locking block 52 from disengaging from the slide groove 51.

[0030] As described above, a foldable children's bath rack has a first limiting step 11 on the base 1 and a second limiting step 22 on the bracket 2. When the bracket 2 is upright, the second limiting step 22 presses against the first limiting step 11.

[0031] As described above, a foldable child bath stand has a support 2 including a telescopic component 23, which includes:

[0032] Rotate the lower sleeve 231 connected to the base 1;

[0033] The upper tube 232 is coaxially sleeved with the lower sleeve 231, and the upper tube 232 can slide up and down along the axis;

[0034] The height locking component 230 is configured to automatically lock the height when the upper tube 232 slides to the target position; the height locking component 230 is a pin structure: it includes a positioning hole 2321 provided in the upper tube 232 and a latch 233 passing through the lower sleeve 231, the latch 233 is inserted into the positioning hole 2321 to lock the relative movement of the lower sleeve 231 and the upper tube 232.

[0035] Compared with the prior art, the present invention has the following advantages:

[0036] 1. The composite locking system of this utility model forms a collaborative mechanism between the second locking mechanism and the first locking mechanism. The second locking mechanism automatically responds to the user's bearing action by relying on a trigger device: when the base is placed on the bearing surface, the bearing surface at the bottom of the locking block is pushed upward by a reverse force, driving the locking block to overcome the resistance of the return spring and embed into the locking hole of the bracket. This process completely eliminates human intervention and achieves basic anti-folding protection. The first locking mechanism, on the other hand, uses the elastic return characteristic of the wrench—the torsion spring presses the locking protrusion tightly against the locking stop of the bracket under normal conditions, and can only be released by actively turning the wrench to the unlocking position. The dual locking mechanisms operate independently, and even if a single-level lock fails, it can still provide sufficient protection margin to prevent accidental folding.

[0037] 2. Addressing the pain point of operation in slippery environments, the second locking mechanism features a base-loaded locking mechanism that unlocks upon lifting, achieving zero-contact operation and eliminating the impact of slippery environments on the locking process from the outset. The wrench design of the first locking mechanism significantly improves ease of operation and reduces the probability of operational failure. It is safer than traditional locks.

[0038] 3. The base and support can be rotated and folded, the support can be extended and retracted, and the handrail can also be folded and moved. Relying on the synergy of multiple folding structures, efficient compression is achieved, reducing the packaging volume.

[0039] 4. The return spring of the second locking mechanism and the return elastic element of the first locking mechanism work together to achieve one-button deployment. After the bracket is erected and placed on the bearing surface, the double locks are triggered, quickly completing the safe deployment. [Attached Image Description]

[0040] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0041] Figure 1 This is a schematic diagram of the overall structure of a foldable children's bath rack according to the present invention.

[0042] Figure 2 This is an exploded view of the second locking mechanism 5 of this utility model;

[0043] Figure 3 This is an exploded view of the first locking mechanism 6 of this utility model;

[0044] Figure 4 This is a cross-sectional view of a foldable children's bath rack according to the present invention;

[0045] Figure 5 for Figure 4 A magnified view of part A;

[0046] Figure 6 for Figure 4 A magnified view of part B;

[0047] Figure 7 This is a schematic diagram of the opening and closing assembly and the flipping assembly of the handrail 3 of this utility model;

[0048] Figure 8 This is a cross-sectional view of a foldable children's bath rack according to the present invention;

[0049] Figure 9 for Figure 8 A magnified view of part C;

[0050] Figure 10 A schematic diagram of the overall structure of this utility model;

[0051] Figure 11 A schematic diagram of the overall structure of this utility model.

Detailed Implementation Methods

[0052] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0053] like Figures 1 to 11As shown, in one embodiment of this utility model, it includes: a base 1 for abutting against the ground; a support 2, the lower part of which is rotatably connected to the base 1 via a pivot 21; a handrail 3 disposed on the upper part of the support 2; a first locking mechanism 6 disposed between the base 1 and the lower part of the support 2, which locks the two together when the support 2 is unfolded relative to the base 1; and a second locking mechanism 5 disposed between the base 1 and the lower part of the support 2, including: a movable locking block 52 and a locking hole 53, the locking hole 53 being disposed at the bottom of the support 2; the locking block 52 being disposed vertically on the base and engaging with the locking hole 53 to lock the base 1 and the support 2; the second locking mechanism 5 is configured such that when the support 2 is unfolded relative to the base 1 and locked by the first locking mechanism 6, and the base 1 abuts against the ground and bears a preset load, the locking block 52 inserts into the locking hole 53 to lock the support 2 relative to the base 1 again. When the base 1 abuts against the ground and the preset load disappears or decreases, the locking block 52 elastically exits the locking hole 53. The second locking mechanism 5 and the first locking mechanism 6 form a collaborative mechanism. The two locking mechanisms operate independently, and even if a single-level lock fails, they can still provide sufficient protection margin to prevent accidental folding.

[0054] Specifically, it includes: a base 1; a bracket 2, rotatably connected to the base 1 via a pivot 21; a handrail 3, mounted on the bracket 2; a composite locking system between the base 1 and the bracket 2, the composite locking system including a second locking mechanism 5 and a first locking mechanism 6; the second locking mechanism 5 includes: a slide groove 51, passing through the base 1; a locking block 52, slidably mounted vertically in the slide groove 51, its top extending to the bottom area of ​​the bracket 2; a lock hole 53, located at the bottom of the bracket 2; a return spring 54, with both ends abutting against the base 1 and the locking block 52 respectively, configured to keep the locking block 52 in a normally lowered unlocked state; and a triggering device configured to drive the locking block 52 to compress the return spring 54. The first locking mechanism 6 includes a wrench 61 hinged to the base 1, with a locking protrusion 611 at its end; and a locking stop 62 mounted on the bracket 2. The wrench 61 includes a locking position and an unlocking position. When the wrench 61 rotates relative to the base 1 to the locking position, the locking protrusion 611 abuts against the locking stop 62 to form the first locking mechanism. When the wrench 61 rotates relative to the base 1 to the unlocking position, the locking protrusion 611 disengages from the locking stop 62 to unlock. The composite locking system is configured such that when the block 52 disengages from the lock hole 53 and the wrench 61 is in the unlocking position, the bracket 2 can rotate and fold relative to the base 1. This invention solves the core defects of traditional products, such as easy failure of single-level locking, poor reliability during wet operation, and low utilization of folding space. The device includes a base 1 and a bracket 2 rotatably mounted on it. A composite locking system is installed between the base 1 and the bracket 2: a second locking mechanism 5 automatically drives a locking block 52 to engage with the locking hole 53 of the bracket 2 when the base 1 bears weight, achieving gravity self-locking without human intervention; a first locking mechanism 6 adopts a wrench 61 structure, whose end locking protrusion 611 forcibly engages with the locking stop 62 of the bracket 2 to form a mechanical lock. The second locking mechanism and the first locking mechanism work independently and collaboratively to ensure that accidental folding is prevented even in the event of a single-stage failure; the wrench 61 design eliminates the risk of operation with wet hands; combined with the folding mechanism of the handle 3, the folded flat structure significantly reduces packaging costs.

[0055] The basic connection between the base 1 and the support 2 is described in detail below with reference to the accompanying drawings. The main body of the base 1 is formed by injection molding, creating a rigid platform with a stable support surface. Two parallel support blocks extend upwards from the rear edge of the base 1. These two support blocks are parallel to each other and aligned at their centers. Coaxial horizontal circular holes are formed on the blocks. The main body of the support 2 is a tubular component with a U-shape at one end. Pivots 21 are symmetrically arranged on both sides of the U-shaped end. The pivots 21 pass through the circular holes in the support blocks, allowing the support 2 to rotate around the axis of the pivots 21 between a vertical use position and a horizontal folding position. Preferably, to limit the rotational stroke and prevent the support 2 from tipping backward, a first limiting step 11 is provided on the rear side of the base 1. Preferably, this first limiting step 11 is a planar structure. A second limiting step 22 is correspondingly provided on the U-shaped end of the support 2. Preferably, the second limiting step 22 is also a planar structure, complementing the first limiting step 11. When the support 2 is rotated to the vertical working position, the plane of the second limiting step 22 is in close contact with the plane of the first limiting step 11, forming a rigid physical stop to prevent the support 2 from tilting excessively backward.

[0056] like Figure 2As shown, the second locking mechanism 5 in the composite locking system of this utility model is a locking mechanism disposed between the base 1 and the bracket 2. Specifically, a longitudinal groove 51 penetrating the main body is provided inside the base 1, and the axis of the groove 51 is perpendicular to the ground of the base 1. A locking block 52 is embedded in the groove 51, and the top of the locking block 52 protrudes from the upper surface of the base 1 and extends to the bottom area of ​​the bracket 2. The bottom of the locking block 52 extends to form a horizontal pressure-bearing surface 521. Preferably, the locking block 52 is machined from metal to increase its service life; preferably, the top of the locking block 52 is provided with a guide slope or guide curved surface to facilitate the upward insertion of the locking block 52. A locking hole 53 is provided on the U-shaped end of the bracket 2, and the bottom shape of the locking hole 53 matches the top shape of the locking block 52. A side-mounted return spring 54 receiving cavity is provided on the groove 51. The return spring 54 is disposed in the cavity, and one end of the return spring 54 abuts against the inner wall of the cavity, and the other end abuts against the locking block 52. In its natural state, the return spring 54 is extended, pushing the locking block 52 to maintain its initial unlocked position away from the lock hole 53. A triggering device is configured to drive the locking block 52 to compress the return spring 54, causing the top of the locking block 52 to engage with the lock hole 53 to form a second locking mechanism. Preferably, the triggering device includes a pressure-bearing surface 521 at the bottom of the locking block 52. The pressure-bearing surface 521 is configured such that when the base 1 is placed on the bearing surface, the pressure-bearing surface 521 directly contacts the bearing surface; when the base 1 bears weight, the reverse force exerted by the bearing surface on the pressure-bearing surface 521 drives the locking block 52 to compress the return spring 54, causing the top of the locking block 52 to engage with the lock hole 53 to form the second locking mechanism. When the base 1 is placed on a support surface, such as a bathroom floor, the pressure-bearing surface 521 at the bottom of the locking block 52 contacts the support surface. After the user places the baby into the bath rack, the base 1 experiences downward pressure, and the support surface generates a vertically upward counterforce. This force drives the pressure-bearing surface 521 to move the locking block 52 upward along the slide groove 51, compressing the return spring 54, causing the top of the locking block 52 to engage with the locking hole 53 at the bottom of the bracket 2, thus completing gravity self-locking. In some embodiments, the second locking mechanism 5 also includes a manual unlocking button, which is linked to the locking block 52. Pressing the manual unlocking button can drive the locking block 52 downward to disengage from the locking hole 53. Specifically, the manual unlocking button is located on the side wall of the base 1 and is linked to the locking block 52 through an inclined plane transmission mechanism. When the button is pressed, the inclined plane converts the horizontal thrust into a vertical downward displacement of the locking block 52, forcibly disengaging it from the locking hole 53. This manual control structure is simple, applicable, and easy to maintain.

[0057] like Figure 5 As shown, in some embodiments, to prevent the locking block 52 from dislodging from the slide groove 51, such as... Figure 2As shown, the anti-detachment mechanism is implemented as follows: A screw hole 511 is machined on the base 1 body on the side wall of the slide groove 51, and a through circular hole 522 is opened at the corresponding position on the side of the locking block 52. The shank of the anti-detachment screw passes through the through hole 522 and is screwed into the screw hole 511 for fixation. The shank of the anti-detachment screw and the through hole 522 of the locking block 52 are in clearance fit, and the diameter of the anti-detachment screw head is larger than the diameter of the through hole 522. When the locking block 52 moves down to the lowest point, the head of the anti-detachment screw contacts the side of the locking block 52 to form a mechanical limit, preventing the locking block 52 from detaching from the slide groove 51. The clearance fit between the shank of the anti-detachment screw and the through hole 522 allows the locking block 52 to slide freely along the slide groove 51.

[0058] like Figure 3 As shown, the first locking mechanism 6 in the composite locking system of this utility model is a locking mechanism disposed between the base 1 and the bracket 2. Specifically, the wrench 61 is an L-shaped part, and its short arm end integrates a locking boss 611. The locking boss 611 includes a flat surface and a curved surface that abut against the locking stop 62 of the bracket 2. Preferably, the surface of the long arm of the wrench 61 is textured to enhance friction. The base 1 is provided with a hinge support for the wrench 61, and a horizontal hinge shaft 64 passes through the circular hole at the short arm of the wrench 61 and the hinge support for the wrench 61, realizing the rotational movement of the wrench 61 around the hinge shaft 64. The U-shaped end of the bracket 2 is provided with a locking stop 62, which has a contact surface that is geometrically complementary to the locking boss 611. When the wrench 61 is in the locked position, the mating surfaces of the locking boss 611 and the locking stop 62 abut against each other to form a contact engagement. When the wrench 61 is in the unlocked position, the locking boss 611 and the locking stop 62 are completely separated. Preferably, the rotation of the wrench 61 can be operated manually. When the bracket 2 is vertical, pressing the wrench 61 will cause the locking protrusion 611 to mechanically engage with the locking stop 62 to achieve locking. To unlock, lifting the wrench 61 will cause the locking protrusion 611 to rotate and disengage from the locking stop 62. The structure is simple and easy to operate. Preferably, in some embodiments, an elastic reset element is sleeved on the hinge shaft 64 between the wrench 61 and the base 1. This elastic reset element can be a torsion spring 63. The torsion spring 63 is sleeved on the hinge shaft 64, with one end fixed in the slot of the base 1 and the other end hooked on the inside of the wrench 61. The preload force drives the wrench 61 to automatically reset to the locked position. Lifting and rotating the wrench 61 overcomes the torsion spring 63, allowing it to rotate to the unlocked position to achieve unlocking. By setting the torsion spring 63 to press the locking protrusion 611 tightly against the locking stop 62 of the bracket 2, and requiring the wrench 61 to be actively moved to the unlocked position to release it, accidents can be reduced and safety performance enhanced.

[0059] like Figure 7As shown, in some embodiments, the support 2 is provided with a telescopic component 23. Specifically, the lower end of the support 2 is a lower sleeve 231, which is rotatably connected to the base 1. The upper tube 232 is sleeved on the lower sleeve 231 and can slide up and down along the lower sleeve 231. The handrail 3 of the shower rack is provided on the upper tube 232 and also includes a height locking component 230, configured to automatically lock the height when the upper tube 232 slides to the target position. Preferably, the height locking component 230 includes a plurality of positioning holes 2321 arranged in a straight line on the upper tube 232, and a latch 233 passing through the lower sleeve 231. When the upper tube 232 slides on the lower sleeve 231, the latch 233 inserts into the positioning holes 2321 to lock the relative movement of the lower sleeve 231 and the upper tube 232.

[0060] In some embodiments, two handrails 3 are symmetrically arranged on the support 2, including a left handrail 31 and a right handrail 32; the handrails 3 are provided with an opening and closing component and a flipping component, the opening and closing component is configured to drive the left handrail 31 and the right handrail 32 to move horizontally synchronously; the flipping component is configured to drive the left handrail 31 and the right handrail 32 to flip up and down as a whole. The opening and closing component includes an opening and closing locking component for locking the opening and closing angle of the handrail 3; the flipping component includes a flipping locking component for locking the flipping of the handrail 3. Specifically, the fixed housing 28 is fixedly connected to the upper part of the support 2; the flip seat 4 is rotatably connected to the fixed housing 28 via a horizontally arranged pivot; the pivot axis of the flip seat 4 and the fixed housing 28 is parallel to the pivot axis of the base 1 and the support 2; the two handrails 3 include a symmetrically arranged left handrail 31 and a right handrail 32, the left handrail 31 and the right handrail 32 are arc-shaped structural members covered with flexible material, both handrails 3 are rotatably arranged on the flip seat 4, and the pivot axis of the handrail 3 and the flip seat 4 is perpendicular to the pivot axis of the flip seat 4 and the support 2. The opening and closing assembly includes: a first sector gear 311 fixed to the end of the left armrest 31 and a second sector gear 321 fixed to the end of the right armrest 32; at least one transmission gear, preferably two transmission gears suitable for large-sized shower racks, namely a first transmission gear 71 and a second transmission gear 72. The first transmission gear 71 meshes with the first sector gear 311, and the second transmission gear 72 meshes with the second sector gear 321. The first transmission gear 71 meshes with the second transmission gear 72, forming a complete gear transmission mechanism. When one armrest 3 of the left armrest 31 and the right armrest 32 is rotated, the other armrest 3 moves synchronously under the action of the gear transmission mechanism, realizing linkage, which can realize the synchronous closing or synchronous unfolding of the armrests 3. Preferably, in some embodiments, an opening and closing locking assembly is also included. Specifically, the opening and closing locking assembly can be provided on the left armrest 31 or the right armrest 32, or both armrests 3 can be provided. Preferably, as shown in the figure... Figure 7The opening and closing locking assembly is located on the right handrail 32. The opening and closing locking assembly includes a stop 8 that is engaged with the handrail 3 via a keyway. The handrail 3 has a handrail hole 322 through which the stop 8 passes. The inner wall of the handrail hole 322 has an axial keyway 323, and the outer periphery of the stop 8 has a protruding key 82. The handrail 3 is rotatably mounted on the handrail connecting part 41 of the flip seat 4. The handrail connecting part 41 has a first annular toothed surface 411. A second annular toothed surface 81 is provided on the stop 8, which is coaxial with and engages with the first annular toothed surface 411. Since the handrail 3 and the stop 8 are engaged via a keyway, the stop 8 can slide up and down relative to the handrail 3 but cannot rotate. The armrest 3 also contains a spring cavity, within which an armrest spring 83 is housed. One end of the armrest spring 83 abuts against the inner wall of the spring cavity of the armrest 3, and the other end abuts against the stop 8. Under normal conditions, this causes the stop 8 to move downwards, engaging and locking the first annular toothed surface 411 and the second annular toothed surface 81. When locked, the armrest 3 cannot rotate relative to the tilting seat 4. Pushing the stop 8 upwards compresses the armrest spring 83, causing the first annular toothed surface 411 and the second annular toothed surface 81 to separate, thus unlocking the armrest 3, which can then rotate relative to the tilting seat 4. Preferably, the first annular toothed surface 411 and the second annular toothed surface 81 form a ratchet engagement. When the armrest 3 rotates towards the closing direction, the ratchet engagement allows rotation; when rotating towards the opening direction, the ratchet engagement locks.

[0061] like Figure 7As shown, the flip seat 4, as the core motion unit, can be composed of a sturdy base plate and two vertically rotating disks 44 on both sides. The outer edge of the rotating disk 44 is provided with a T-shaped convex rail, which forms a sliding engagement relationship with the annular guide rail 27 of the fixed housing 28, together constituting a rotating mechanism. This allows the flip seat 4 to complete a backward tilting action on the support 2. Specifically, the flip assembly also includes a flip locking assembly disposed between the flip seat 4 and the support 2. The flip seat 4 can rotate around the support 2, driving the two handrails 3 and the transmission gear to rotate synchronously. Preferably, the flip locking assembly includes a flip locking groove 42 disposed in the flip seat 4, with a flip locking block 9 disposed within the flip locking groove 42. A fixing seat 24 is disposed on the fixed housing 28, with a limiting part 241 for abutting against the flip locking block 9. A flip spring 422 abuts against the inner wall of the flip locking groove 42 at one end and against the flip locking block 9 at the other end. Under normal conditions, it drives the flip locking block 9 to protrude from the flip locking groove 42 and abut against the limiting part 241 for locking. Preferably, the limiting part 241 can also be configured as a groove, allowing the flip locking block 9 to be inserted to restrict the freedom of two flipping directions. An unlocking push block 25 for unlocking is slidably disposed on the fixed housing 28. The end of the unlocking push block 25 abuts against the flip locking block 9. When the unlocking push block 25 is pushed, it drives the flip locking block 9 to retract along the flip locking groove 42, disengaging the flip locking block 9 from the limiting part 241, thereby unlocking the flipping seat 4 and allowing it to flip around the bracket 2. The base 1 and bracket 2 are rotatable and foldable, the bracket 2 is telescopic, and the handle 3 is also foldable. Relying on the synergy of multiple folding structures, efficient compression is achieved, reducing packaging volume. Preferably, to prevent the locking block 9 from disengaging from the locking groove 42 during flipping, a strip-shaped anti-disengagement hole 421 is provided on the side wall of the locking groove 42. The flip locking block 9 is laterally provided with an anti-disengagement protrusion 91 extending into this hole, limiting the sliding stroke of the flip locking block 9 to not exceed a preset threshold.

[0062] In some embodiments, such as Figure 9 As shown, to enhance anti-tipping capability, a baffle 26 is provided on the support 2. A second locking block 43 is provided at the corresponding position on the flip seat 4. When the flip seat 4 is in a horizontal position, the vertical edge of the second locking block 43 is tightly fitted with the baffle 26, physically preventing the flip seat 4 from flipping downwards. This avoids the handrail 3 from flipping downwards and causing a safety accident. When the preset backward folding action is performed, the second locking block 43 naturally disengages from the contact surface of the baffle 26 along the rotation trajectory of the flip seat 4, without any movement interference.

Claims

1. A foldable child bath stand, characterized in that... include: The base (1) is used to rest against the ground; The bracket (2) is rotatably connected to the base (1) via a pivot (21) at its lower part; Handrail (3) is provided on the upper part of the bracket (2); A first locking mechanism (6) is provided between the lower part of the base (1) and the bracket (2), and the first locking mechanism (6) locks the two together when the bracket (2) is unfolded relative to the base (1); The second locking mechanism (5) is disposed between the base (1) and the lower part of the bracket (2), and includes: a movable locking block (52) and a locking hole (53), wherein the locking hole (53) is disposed at the bottom of the bracket (2); The locking block (52) is vertically positioned on the base and can be inserted into the locking hole (53) to lock the base (1) and the bracket (2). The second locking mechanism (5) is configured such that when the bracket (2) is unfolded relative to the base (1) and locked by the first locking mechanism (6), and the base (1) abuts against the ground and bears a preset load, the locking block (52) is inserted into the locking hole (53) to lock the bracket (2) relative to the base (1) again.

2. The foldable child bathing stand as described in claim 1, characterized in that... When the bracket (2) is unfolded relative to the base (1) and locked by the first locking mechanism (6), and the base (1) is in contact with the ground and bears a preset load, the locking block (52) is inserted into the locking hole (53) to lock the bracket (2) relative to the base (1) again. When the base (1) comes into contact with the ground and the preset load disappears or decreases, the locking block (52) elastically exits the lock hole (53).

3. A foldable child bathing stand as described in claim 1, characterized in that... The bottom of the card block (52) is provided with a pressure-bearing surface (521). The pressure-bearing surface (521) is configured such that when the base (1) is placed on the ground, the pressure-bearing surface (521) contacts the ground; when the base (1) bears a preset load, the ground generates a vertically upward reverse force, which drives the card block (52) to move upward and embed into the lock hole (53).

4. A foldable child bathing stand as described in claim 1, characterized in that... The first locking mechanism (6) includes: The wrench (61) is hinged to the base (1) via a hinge shaft (64), and its end is provided with a locking boss (611); A locking stop (62) is provided on the bracket (2); The wrench (61) can rotate around the hinge axis (64) between the locking position and the unlocking position. When the wrench (61) is in the locking position, the locking boss (611) abuts against the locking stop (62) to form a lock. When the wrench (61) rotates to the unlocking position, the locking boss (611) disengages from the locking stop (62) to achieve unlocking.

5. A foldable child bathing stand as described in claim 4, characterized in that... The first locking mechanism (6) further includes an elastic reset member configured to keep the wrench (61) in the locked position under normal conditions.

6. A foldable child bathing stand as described in claim 5, characterized in that... The elastic reset component is a torsion spring (63), which is sleeved on the hinge shaft (64) of the wrench (61); one end of the torsion spring (63) is fixed to the base (1), and the other end abuts against the wrench (61), and its preload force drives the wrench (61) to the locking position.

7. A foldable child bathing stand as described in claim 1, characterized in that... The second locking mechanism (5) also includes: A slide groove (51) is provided through the base (1); the locking block (52) is slidably disposed in the slide groove (51), and the top end of the locking block (52) extends to the bottom area of ​​the bracket (2); The return spring (54) has its two ends abutting against the inner wall of the slide groove (51) and the locking block (52) respectively. Under normal conditions, it pushes the locking block (52) to the lower unlock position, so that the top of the locking block (52) is below the lock hole (53).

8. A foldable child bathing stand as described in claim 7, characterized in that... An anti-detachment structure is provided between the card block (52) and the base (1), the anti-detachment structure including: A screw hole (511) is provided on the side wall of the slide groove (51); A through hole (522) penetrates the card block (52); The anti-loosening screw has its shank passing through the through hole (522) and threadedly connected to the screw hole (511); The shank of the anti-loosening screw is clearance-fitted with the through hole (522), and the head diameter of the anti-loosening screw is larger than the hole diameter of the through hole (522). The anti-loosening screw is configured such that when the locking block (52) moves down to the lower unlocked position under the action of the reset spring (54), the head of the anti-loosening screw abuts against the locking block (52) to form a limit, preventing the locking block (52) from disengaging from the slide groove (51).

9. A foldable child bathing stand as described in claim 1, characterized in that... The base (1) is provided with a first limiting step (11), and the bracket (2) is provided with a second limiting step (22). When the bracket (2) is erected, the second limiting step (22) presses against the first limiting step (11).

10. A foldable child bath stand as described in claim 1, characterized in that... The support (2) includes a telescopic assembly (23), the telescopic assembly (23) comprising: Rotate the lower sleeve (231) connected to the base (1); The upper tube (232) is coaxially sleeved with the lower sleeve (231), and the upper tube (232) can slide up and down along the axis; A height locking component (230) is configured to automatically lock the height when the upper tube (232) slides to the target position; the height locking component (230) is a pin structure: including a positioning hole (2321) provided in the upper tube (232) and a latch (233) passing through the lower sleeve (231), the latch (233) being inserted into the positioning hole (2321) to lock the relative movement of the lower sleeve (231) and the upper tube (232).

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