A child bath support with foldable armrests

Abstract

The utility model discloses a folding children's shower frame with foldable handrails, which comprises a base, a support, a fixed shell and a turnover seat capable of rotating around a horizontal second pivot. The core improvement lies in: handrail safety adjustment: the left and right handrails are connected to the turnover seat through a vertical third pivot, a synchronous linkage assembly drives the double handrails to open and close synchronously, an opening and closing locking assembly realizes angle adjustment and one-way locking, and is suitable for different child body types; anti-overturning safety design: a turnover limiting assembly strictly limits the turnover seat to turn over upward and backward only, avoiding accidental falling and forward inclination of the handrails during use; a turnover locking assembly provides double working locking. Efficient folding: after the handrails are folded, the whole body turns over upward and folds, realizing the flattening and storage of the three-dimensional frame, reducing the transportation volume, overcoming the defects of poor handrail adaptability, bearing locking failure and large folding redundant space of traditional products, ensuring the use stability through the physical limiting mechanism, and significantly improving the safety and storage and transportation efficiency.

Description

Technical Field

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

[0002] Currently, children's bath racks on the market have significant defects in terms of safety and folding performance, specifically: 1. Fixed armrest curvature: As described in Chinese invention patent CN 201139498Y, the curvature of the armrest is fixed and cannot be adjusted. Children need to rely on the armrest to maintain balance when standing, but the fixed curvature of the armrest cannot adapt to the differences in arm span of children of different sizes, easily causing the risk of slipping. 2. Defective joint locking structure: Existing folding mechanisms mostly rely on spring-loaded pin structures, which have design flaws under load. When the armrest bears a certain load, the pin may fall off, causing the self-locking function to fail. 3. Maintaining a three-dimensional frame after folding: Traditional children's bath racks suffer from low transportation efficiency due to structural design defects. Their folding mechanisms can only achieve a superficial folding, with many ineffective spaces remaining between components. This means that even with a large amount of cushioning material in the packaging, it is still difficult to avoid component collisions.

[0003] This utility model was developed in response to the aforementioned problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of existing technologies. This utility model discloses a foldable child bathing rack with armrests, which consists of a base, a bracket, a fixed shell, and a flip-up seat that can rotate around a horizontal second pivot. The core improvements are: Armrest safety adjustment: The left and right armrests are connected to the flip-up seat through a vertical third pivot. A synchronous linkage component drives the two armrests to open and close synchronously. An opening and closing locking component realizes angle adjustment and one-way locking to adapt to different children's body shapes. Anti-tipping safety design: The flip-up limiting component strictly limits the flip-up seat to flipping only upward and backward to prevent the armrest from accidentally falling and tilting forward during use; the flip-up locking component provides double working locking. Efficient folding: After the armrests are folded, the whole unit flips upward and folds, realizing the flattening and storage of the three-dimensional frame, reducing the transportation volume. It overcomes the defects of traditional products such as poor armrest adaptability, failure of load-bearing locking, and large redundant folding space. The physical limiting mechanism ensures the stability of use and significantly improves safety and storage and transportation efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides a child bathing stand with foldable armrests, comprising:

[0006] Base 1;

[0007] Support 2, the lower part of which is connected to the base 1;

[0008] A fixed housing 28 is fixedly connected to the upper part of the bracket 2;

[0009] The flip-up base 4 is rotatably connected to the fixed housing 28 via a horizontally positioned second pivot 20;

[0010] A flip-locking assembly 40 is disposed between the flip base 4 and the fixed housing 28 to lock the flip base 4 relative to the fixed housing 28 when the flip base 4 is in the working position relative to the fixed housing 28.

[0011] Left armrest 31 and right armrest 32, which are rotatably connected to the flip seat 4 via a vertically arranged third pivot 30;

[0012] Synchronous linkage component 70 is set on the flip base 4 to link the left armrest 31 and the right armrest 32 to close or open synchronously. The synchronous linkage component 70 can rotate relative to the fixed housing 28 around the second pivot 20 with the flip base 4.

[0013] An opening and closing locking component 80 is provided between the left armrest 31 or the right armrest 32 and the flip seat 4 to lock the left armrest 31 and the right armrest 32 to move synchronously.

[0014] The flipping limiting component 60 is disposed between the flipping seat 4 and the fixed housing 28. When the flipping locking component 40 releases the locking state between the flipping seat 4 and the fixed housing 28, the flipping limiting component 60 restricts the flipping seat 4 from flipping the left handrail 31 and the right handrail 32 downward and forward relative to the fixed housing 28, and makes the flipping seat 4 and the left handrail 31 and the right handrail 32 only able to flip upward and backward relative to the fixed housing 28.

[0015] As described above, a child bathing stand with foldable armrests includes a fixed block 26 disposed inside the fixed housing 28 and a movable block 43 disposed on the flipping seat 4. When the flipping seat 4 is in the working state, the movable block 43 abuts against the fixed block 26 to restrict the flipping seat 4 from driving the left armrest 31 and the right armrest 32 to flip downward and forward.

[0016] As described above, in a child bath stand with a foldable armrest, the opening and closing locking assembly 80 includes:

[0017] The third pivot portion 41 is fixed to the flip seat 4 and the armrest 3 is inserted through it. The third pivot portion 41 is provided with a first annular toothed surface 411.

[0018] The stopper 8 has a second annular toothed surface 81 that meshes with the first annular toothed surface 411.

[0019] The handrail 3 is provided with a mounting part 322 for the stop 8 to pass through, and the mounting part 322 is provided with a keyway 323; the stop 8 is provided with a protruding key 82, which is slidably engaged in the keyway 323, so that the stop 8 can slide along the keyway 323 and prevent the stop 8 from rotating relative to the handrail 3.

[0020] A return spring 83 is provided in the mounting part 322, with one end abutting against the inner wall of the handrail 3 and the other end abutting against the stop member 8. Under normal conditions, it pushes the second annular tooth surface 81 to engage with the first annular tooth surface 411.

[0021] When the stop 8 is pressed to compress the return spring 83, the second annular tooth surface 81 disengages from the first annular tooth surface 411, and at this time the armrest 3 can rotate around the third pivot 41 to adjust the opening and closing angle.

[0022] As described above, in a child bathing stand with foldable armrests, the first annular toothed surface 411 and the second annular toothed surface 81 are ratchet structures. The ratchet is tilted in such a way that when the armrest 3 rotates toward the closing direction, it is allowed to slide over the ratchet; when it rotates toward the opening direction, it is locked.

[0023] As described above, in a child bathing stand with foldable armrests, the synchronous linkage component 70 includes:

[0024] The first gear 311 is fixedly mounted at the end of the left armrest 31;

[0025] The second gear 321 is fixedly mounted at the end of the right armrest 32;

[0026] The transmission gear set includes at least one transmission gear that meshes with the first gear 311 and the second gear 321; the transmission gear set is rotatably mounted on the flip base 4 via bearings.

[0027] As described above, in a child bath stand with a foldable armrest, the transmission gear set includes:

[0028] The first transmission gear 71 meshes with the first gear 311;

[0029] The second transmission gear 72 meshes with the second gear 321;

[0030] The first transmission gear 71 meshes with the second transmission gear 72.

[0031] As described above, in a child bath stand with a foldable armrest, the flip-lock assembly 40 includes:

[0032] Slide groove 42 is provided on the flip seat 4;

[0033] The first locking block 9 is slidably disposed within the slide groove 42.

[0034] A fixed card holder 24 is disposed on the fixed housing 28, and the fixed card holder 24 is provided with a limiting part 241 that engages with the first card block 9;

[0035] The elastic reset member 422 has one end abutting against the inner wall of the slide groove 42 and the other end abutting against the first locking block 9. Under normal conditions, it drives the first locking block 9 to protrude out of the slide groove 42 and abut against and lock against the limiting part 241.

[0036] The unlocking push block 25 is slidably mounted on the fixed housing 28, and the end of the unlocking push block 25 abuts against the first locking block 9;

[0037] When the unlocking push block 25 is pushed, the unlocking push block 25 drives the first locking block 9 to retract along the slide groove 42, causing the first locking block 9 to disengage from the limiting part 241, thereby unlocking the flip seat 4 and allowing the flip seat 4 to flip around the second pivot 20.

[0038] As described above, a child bathing stand with foldable armrests has an anti-detachment hole 421 on the side wall of the slide groove 42, and the first locking block 9 has an anti-detachment protrusion 91 embedded in the anti-detachment hole 421 on its side. The anti-detachment protrusion 91 is used to limit the sliding stroke of the first locking block 9 in the slide groove 42.

[0039] As described above, a child bathing stand with foldable armrests has rotating discs 44 symmetrically arranged on both sides of the flip base 4, and an annular guide rail 27 matching the rotating discs 44 is provided on the fixed housing 28; the outer edge of the rotating discs 44 is slidably fitted into the annular guide rail 27, and the axis of the rotating discs 44 is the second pivot 20.

[0040] As described above, a child bathing stand with a foldable armrest includes a support 2 comprising a telescopic component 23, the telescopic component 23 comprising:

[0041] Rotate the lower sleeve 231 connected to the base 1;

[0042] 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;

[0043] 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-hole mating 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.

[0044] Compared with the prior art, the present invention has the following advantages:

[0045] 1. Handrail Safety Adjustment: The left and right handrails are connected to the flip-up base via a vertical third pivot. A synchronous linkage component drives the two handrails to open and close simultaneously. An opening and closing locking component allows for angle adjustment and one-way locking, adapting to different children's body types. Anti-tipping safety design: The flip-up limit component strictly restricts the flip-up base to only flip upwards and backwards, preventing the handrail from accidentally falling and tilting forward during use; the flip-up locking component provides dual working locking. Efficient Folding: After folding, the handrails fold upwards as a whole, flattening the three-dimensional frame for storage and reducing transportation volume. Overcoming the shortcomings of traditional products such as poor handrail adaptability, load-bearing locking failure, and large redundant folding space, a physical limiting mechanism ensures stability during use, significantly improving safety and storage efficiency.

[0046] 2. The opening and closing locking assembly adopts a ratchet locking mechanism. After the first and second annular tooth surfaces mesh, a one-way dynamic self-locking is formed. When a child pushes the armrest outward, a self-reinforcing locking effect is generated. Only a single press of the stop is needed to unlock in both directions, improving operational efficiency.

[0047] 3. The stop is installed on the handrail as a locking pin, and is provided with a first annular toothed surface that meshes with the second annular toothed surface on the flip seat. The locking structure is stable and effectively solves the problem that the self-locking function may fail when the handrail is subjected to a certain load. Attached Figure Description

[0048] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0049] Figure 1 This is a schematic diagram of the overall structure of a child bathing stand with foldable armrests according to the present invention.

[0050] Figure 2 This is a schematic diagram of the handrail synchronous linkage component and the flip-locking component of this utility model;

[0051] Figure 3 This is a cross-sectional view of a child bathing stand with foldable armrests according to the present invention;

[0052] Figure 4 for Figure 3 A magnified view of part A;

[0053] Figure 5 This is an exploded view of the primary locking pin assembly of this utility model;

[0054] Figure 6 This is an exploded view of the secondary boss locking assembly of this utility model;

[0055] Figure 7This is a cross-sectional view of a child bathing stand with foldable armrests according to the present invention;

[0056] Figure 8 for Figure 7 A magnified view of part B. Detailed Implementation

[0057] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0058] like Figures 1 to 8As shown, this utility model discloses a foldable child bathing rack with foldable armrests, comprising a base 1; a support 2, the lower part of which is connected to the base 1; a fixed housing 28, which is fixedly connected to the upper part of the support 2; a flip base 4, which is rotatably connected to the fixed housing 28 via a horizontally arranged second pivot 20; a flip locking assembly 40, disposed between the flip base 4 and the fixed housing 28 to lock them together when the flip base 4 is in the working position relative to the fixed housing 28; a left armrest 31 and a right armrest 32, which are rotatably connected to the flip base 4 via a vertically arranged third pivot 30; and a synchronous linkage assembly 70, disposed on the flip base 4 to link the left armrest 31 and the right armrest 32. The handrails 32 close or open synchronously, and the synchronous linkage component 70 can rotate relative to the fixed housing 28 around the second pivot 20 with the flip base 4. The opening and closing locking component 80 is set between the left handrail 31 or the right handrail 32 and the flip base 4 to lock the left handrail 31 and the right handrail 32 to move synchronously. The flip limiting component 60 is set between the flip base 4 and the fixed housing 28. When the flip locking component 40 releases the locking state between the flip base 4 and the fixed housing 28, the flip limiting component 60 restricts the flip base 4 from driving the left handrail 31 and the right handrail 32 to flip downward and forward relative to the fixed housing 28, and makes the flip base 4 driving the left handrail 31 and the right handrail 32 to only flip upward and backward relative to the fixed housing 28. Specifically, the flip base 4 being in the working position relative to the support 2 means that when the rotation position of the flip base 4 makes the handrail 3 parallel to the horizontal plane and the handrail 3 is located directly above the base 1, this is the working position of the flip base 4 relative to the support 2. The armrest 3 mentioned in the text includes the left armrest 31 and the right armrest 32. It addresses three major technical shortcomings of existing products: fixed curvature, unstable joint locking, and low utilization of folding space. Armrest safety adjustment: The left and right armrests are connected to the flip base via a vertical third pivot. The synchronous linkage component 70 drives the two armrests to open and close synchronously. The opening and closing locking component 80 enables angle adjustment and one-way locking, adapting to different children's body shapes. Anti-tipping safety design: The flip limit component 60 strictly limits the flip base to only flipping upwards and backwards, preventing the armrest from accidentally falling forward during use; the flip locking component 40 provides dual working locking. Efficient folding: After folding, the armrest flips upwards as a whole, flattening the three-dimensional frame for storage and reducing transportation volume. It overcomes the shortcomings of traditional products such as poor adaptability, load-bearing locking failure, and large redundant folding space. A physical limiting mechanism ensures stability during use, significantly improving safety and storage efficiency.

[0059] Specifically, the main structure of the children's bath rack consists of four main modules: base 1, support 2, flip seat 4, left armrest 31, and right armrest 32. Base 1 serves as the load-bearing foundation, with anti-slip textures and drainage holes on its bottom. The lower end of support 2 forms a rotating joint with base 1 via support pivots 21 (first pivots 10) on both sides, with the axis of the first pivots 10 arranged horizontally. A supporting frame extends from the upper end of support 2, with symmetrical annular guide rails 27 on its two side walls.

[0060] The flip base 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 disks 44 is provided with T-shaped convex rails, which form a sliding engagement relationship with the annular guide rails 27 of the fixed housing 28. Together, they constitute the rotation mechanism of the second pivot 20. The axis of this second pivot 20 is parallel to the axis of the aforementioned first pivot 10, allowing the flip base 4 to perform a backward tilting action on the support 2. A third pivot portion 41 is symmetrically provided at the front end of the flip base 4, and the axis of the third pivot portion 41 is perpendicular to the axis of the second pivot 20.

[0061] The left armrest 31 and right armrest 32 adopt a mirror-symmetrical design, with an arc-shaped anti-slip grip section at one end of the armrest 3. The opening and closing locking assembly 80 is located on either the left armrest 31 or the right armrest 32. Figure 2 As shown, the opening and closing locking assembly 80 is provided on the right handrail 32. Specifically, the other end of the handrail 3 is hinged to the flip seat 4 via a third pivot portion 41. The specific structure is as follows: the third pivot portion 41 is provided with a third pivot hole 412 for the handrail 3 to pass through. The inner wall surface of the third pivot hole 412 is machined with a first annular toothed surface 411, and the tooth shape is distributed in a stepped manner. A cylindrical stop 8 is inserted into the mounting portion 322 of the handrail 3. The circumferential side wall of the stop 8 is machined with a second annular toothed surface 81 that meshes with the first annular toothed surface 411. A protruding key 82 extends axially from the side wall of the stop 8. A matching keyway 323 is opened on the inner wall of the mounting portion 322 of the handrail 3, so that the stop 8 can only slide axially and cannot rotate. A return spring 83 is provided on the top of the stop 8, with its two ends abutting against the inner wall of the handrail 3 and the top stepped surface of the stop 8, respectively. Under normal conditions, it drives the first annular toothed surface 411 and the second annular toothed surface 81 to engage and lock. When the stop 8 is pressed to overcome the spring force of the return spring 83, the annular toothed surface separates and releases the lock, allowing the armrest 3 to rotate around the third pivot 41. Specifically, the first annular toothed surface 411 and the second annular toothed surface 81 are ratchet structures. The ratchet is tilted in such a way that when the armrest 3 rotates toward the closing direction, it is allowed to slide over the ratchet; when it rotates toward the opening direction, it is locked. That is, when the armrest 3 rotates toward the closing direction, i.e., it rotates inward, the tilted toothed surface of the ratchet guides the smooth sliding; when it rotates toward the opening direction, the vertical toothed surface forms a mechanical self-lock to prevent accidental opening.

[0062] In some embodiments, such as Figure 2As shown, the synchronous linkage component 70 includes a gear linkage mechanism. A first gear 311 is integrally formed at the end of the left armrest 31, and a second gear 321 is integrally formed at the end of the right armrest 32. Both gears have identical tooth profiles and modules. Two parallel shafts are fixed to the center of the flip base 4 via bearing seats, on which the first transmission gear 71 and the second transmission gear 72 are respectively mounted. The first transmission gear 71 meshes with the first gear 311, and the second transmission gear 72 meshes with the second gear 321. The two transmission gears then mesh with each other to form a closed-loop linkage system. This dual-transmission gear scheme improves the synchronization accuracy of the opening and closing of the left armrest 31 and the right armrest 32, and avoids angular deviations caused by backlash accumulation in a single gear. It is also suitable for larger children's bath racks.

[0063] In some embodiments, the movement of the flip seat 4 is controlled by the flip locking assembly 40. A transverse groove 42 is formed at the bottom of the flip seat 4, and a first locking block 9 is installed within the groove 42. The tail of the first locking block 9 is connected to the inner wall of the groove 42 via an elastic reset member 422. Preferably, the elastic reset member 422 is a compression spring, and under normal conditions, the spring's thrust causes the front end of the first locking block 9 to protrude out of the groove 42. A fixed locking seat 24 is riveted to the crossbeam of the bracket 2, and a limiting part 241 is provided on it. When the flip seat 4 rotates to the horizontal working position, the front end of the first locking block 9 automatically engages with the limiting part 241 to form a rigid lock. In some embodiments, the limiting part 241 can be a limiting groove whose shape matches the front end of the first locking block 9. The front end of the first locking block 9 is inserted into the limiting groove to achieve locking of two degrees of freedom in the flipping direction. An unlocking pusher 25 is slidably mounted on the fixed housing 28, extending transversely through the inner wall of the fixed housing 282, with one end abutting against the front end of the first locking block 9. When the unlocking pusher 25 is pushed forward, the first locking block 9 is driven to compress the spring and retract into the slide groove 42. At the same time, the first locking block 9 is completely disengaged from the limiting part 241 of the fixed base 24. At this time, the flip base 4 can be flipped and folded upward around the second pivot 20. Preferably, in order to prevent the first locking block 9 from disengaging from the slide groove 42, a strip-shaped anti-disengagement hole 421 is provided on the side wall of the slide groove 42. The first locking block 9 is provided with an anti-disengagement protrusion 91 extending into the hole, which limits the sliding stroke of the first locking block 9 from exceeding a preset threshold.

[0064] like Figure 4 As shown, in some embodiments, to enhance the anti-tipping capability, a fixed stop block 26 is provided on the fixed housing 28. A movable stop 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 movable stop block 43 is tightly fitted with the fixed stop block 26, physically preventing the flip seat 4 from flipping downwards and forwards. This avoids the handrail 3 from flipping downwards and causing a safety accident. When the preset backward folding action is performed, the movable stop block 43 naturally disengages from the contact surface of the fixed stop block 26 along the rotation trajectory of the flip seat 4, without any movement interference.

[0065] like Figure 8As 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.

[0066] 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 the center. 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. Support shafts 21 are symmetrically arranged on both sides of the U-shaped end. The support shafts 21 pass through the circular holes in the support blocks, allowing the support 2 to rotate around the axis of the support shafts 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.

[0067] In some embodiments, a composite locking system is provided between the base 1 and the bracket 2: a primary pin locking component and a secondary boss locking component.

[0068] like Figures 5 to 7As shown, the primary locking assembly has a longitudinal locking groove 51 extending through the main body inside the base 1, with the axis of the groove 51 perpendicular to the ground surface of the base 1. A primary locking pin 52 is embedded in the locking groove 51, with its top protruding from the upper surface of the base 1 and extending to the bottom area of ​​the bracket 2. Preferably, the primary locking pin 52 is machined from metal to increase its service life; preferably, the top of the primary locking pin 52 has a guide slope or guide curve for easy upward insertion. A locking hole 53 is provided on the U-shaped end of the bracket 2, the bottom shape of which matches the top shape of the primary locking pin 52. A spring receiving cavity is provided on the side of the locking groove 51, and a primary spring 54 is disposed within this cavity, with one end of the spring 54 abutting against the inner wall of the cavity and the other end abutting against the primary locking pin 52. In its natural state, the primary spring 54 is in an extended state, pushing the primary locking pin 52 to maintain its initial unlocked position away from the locking hole 53. The triggering device is configured to drive the primary locking pin 52 to compress the primary spring 54, and cause the top of the primary locking pin 52 to embed into the lock hole 53 to form a primary lock. Preferably, the triggering device includes a bearing surface 521 at the bottom of the primary locking pin 52. The bearing surface 521 is configured to contact the bearing surface when the base 1 is placed on a bearing surface, such as a bathroom floor. After the user places the baby in the bath rack, the base 1 is subjected to downward pressure, and the bearing surface generates a vertically upward counterforce. This force drives the bearing surface 521 to move the primary locking pin 52 upward along the locking groove 51, compressing the primary spring 54, so that the top of the primary locking pin 52 embeds into the lock hole 53 at the bottom of the bracket 2, completing gravity self-locking, i.e., completing the primary lock. Preferably, in some embodiments, the primary pin locking assembly adopts manual unlocking, including a manual unlocking button, which is linked to the primary locking pin 52; pressing the manual unlocking button can drive the primary locking pin 52 downward to disengage from the lock hole 53. Specifically, the manual unlocking button is located at the bottom or side of the base 1 and is linked to the primary locking pin 52 via a ramp transmission mechanism. When the button is pressed, the ramp converts the horizontal thrust into a vertical downward displacement of the primary locking pin 52, forcibly disengaging it from the lock hole 53. This manual control structure is simple, practical, and easy to maintain.

[0069] like Figures 5 to 7 As shown, the secondary boss locking assembly specifically includes a wrench 61 rotatably mounted on the base 1. The wrench 61 is L-shaped, with a locking boss 611 integrated at the end of its short arm. 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, enabling the wrench 61 to rotate around the hinge shaft 64. Figure 5As shown, a locking stop 62 is provided on the U-shaped end of the bracket 2. The locking stop 62 has a contact surface that is geometrically complementary to the locking protrusion 611. When the wrench 61 is in the locked position, the mating surfaces of the locking protrusion 611 and the locking stop 62 abut against each other, forming a contact engagement. When the wrench 61 is in the unlocked position, the locking protrusion 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 mechanically engage the locking protrusion 611 with the locking stop 62 to achieve locking. When unlocking is required, lifting the wrench 61 will cause the locking protrusion 611 to rotate and disengage from the locking stop 62. The structure is simple and the operation is convenient. Preferably, in some embodiments, a torsion spring 63 is sleeved on the hinge shaft 64 between the wrench 61 and the base 1. The torsion spring 63 can be a torsion spring 63, which is sleeved on the hinge shaft 64. One end of the torsion spring 63 is fixed in the slot of the base 1, and the other end is hooked on the inside of the wrench 61. The preload force drives the wrench 61 to automatically return to the locked position. When the wrench 61 is lifted and rotated, it overcomes the torsion spring 63 and can be rotated to the unlocked position to unlock. The torsion spring 63 presses the locking protrusion 611 tightly against the locking stop 62 of the bracket 2. It can only be released by actively moving the wrench 61 to the unlocked position, which can reduce the occurrence of accidents and enhance safety performance.

[0070] The primary locking pin assembly and the secondary locking boss assembly form a collaborative mechanism. The primary locking relies on a trigger device to automatically respond to the user's load-bearing action: when the base 1 is placed on the load-bearing surface, the pressure surface 521 at the bottom of the primary locking pin 52 is pushed upwards by a reverse force, driving the primary locking pin 52 to overcome the resistance of the primary spring 54 and embed into the locking hole 53 of the bracket 2. This process completely eliminates human intervention and provides basic anti-folding protection. The secondary locking utilizes the elastic reset characteristic of the wrench 61—under normal conditions, the torsion spring 63 presses the locking boss 611 tightly against the locking stop 62 of the bracket 2, requiring the wrench 61 to be actively moved to the unlocking position to release it. The dual systems operate independently, providing sufficient protection margin even if a single-level lock fails, preventing accidental folding.

Claims

1. A child bathing stand with foldable armrests, characterized in that... include: Base (1); The bracket (2) is connected to the base (1) at its lower part; A fixed housing (28) is fixedly connected to the upper part of the bracket (2); The flip-up seat (4) is rotatably connected to the fixed housing (28) via a horizontally positioned second pivot (20); A flip locking assembly (40) is provided between the flip base (4) and the fixed housing (28) to lock the two together when the flip base (4) is in the working position relative to the fixed housing (28); The left armrest (31) and the right armrest (32) are rotatably connected to the flip seat (4) via a vertically arranged third pivot (30); The synchronous linkage component (70) is set on the flip seat (4) to link the left armrest (31) and the right armrest (32) to close or open synchronously. The synchronous linkage component (70) can rotate relative to the fixed shell (28) around the second pivot (20) with the flip seat (4). An opening and closing locking assembly (80) is provided between the left armrest (31) or the right armrest (32) and the flip seat (4) to lock the left armrest (31) and the right armrest (32) from moving synchronously; The flipping limiting component (60) is located between the flipping seat (4) and the fixed housing (28). When the flipping locking component (40) releases the locking state between the flipping seat (4) and the fixed housing (28), the flipping limiting component (60) restricts the flipping seat (4) from driving the left handrail (31) and the right handrail (32) to flip downward and forward relative to the fixed housing (28), and makes the flipping seat (4) drive the left handrail (31) and the right handrail (32) to only flip upward and backward relative to the fixed housing (28).

2. A child bathing stand with foldable armrests as described in claim 1, characterized in that... The flipping limiting component (60) includes a fixed stop block (26) disposed inside the fixed housing (28) and a movable stop block (43) disposed on the flipping seat (4). When the flipping seat (4) is in working state, the movable stop block (43) abuts against the fixed stop block (26) to restrict the flipping seat (4) from driving the left handrail (31) and right handrail (32) to flip downward and forward.

3. A child bathing stand with foldable armrests as described in claim 1, characterized in that... The opening and closing locking assembly (80) includes: The third pivot part (41) is fixed to the flip seat (4) for the armrest (3) to pass through. The third pivot part (41) is provided with a first annular toothed surface (411). The stop (8) has a second annular toothed surface (81) that meshes with the first annular toothed surface (411). The handrail (3) is provided with a mounting part (322) through which the stop (8) passes, and the mounting part (322) is provided with a keyway (323); the stop (8) is provided with a protruding key (82), and the protruding key (82) is slidably engaged in the keyway (323), so that the stop (8) can slide along the keyway (323) and prevent the stop (8) from rotating relative to the handrail (3); A return spring (83) is provided in the mounting part (322), with one end abutting against the inner wall of the handrail (3) and the other end abutting against the stop (8). Under normal conditions, it pushes the second annular tooth surface (81) to engage the first annular tooth surface (411). When the stop (8) is pressed to compress the return spring (83), the second annular tooth surface (81) disengages from the first annular tooth surface (411), and at this time the armrest (3) can rotate around the third pivot (41) to adjust the opening and closing angle.

4. A child bathing stand with foldable armrests as described in claim 3, characterized in that... The first annular tooth surface (411) and the second annular tooth surface (81) are ratchet structures, and the ratchet tilt direction is set so that the handrail (3) is allowed to slide over the ratchet when it rotates toward the closing direction; It locks when rotated in the opening direction.

5. A child bathing stand with foldable armrests as described in claim 1, characterized in that... The synchronous linkage component (70) includes: The first gear (311) is fixed at the end of the left armrest (31); The second gear (321) is fixed to the end of the right armrest (32); The transmission gear set includes at least one transmission gear that meshes with the first gear (311) and the second gear (321); the transmission gear set is rotatably mounted on the flip seat (4) via bearings.

6. A child bathing stand with foldable armrests as described in claim 5, characterized in that... The transmission gear set includes: The first transmission gear (71) meshes with the first gear (311); The second transmission gear (72) meshes with the second gear (321); The first transmission gear (71) meshes with the second transmission gear (72).

7. A child bathing stand with foldable armrests as described in claim 1, characterized in that... The flip-lock component (40) includes: A slide groove (42) is provided on the flip seat (4); The first locking block (9) is slidably disposed within the groove (42). A fixed card holder (24) is provided on the fixed housing (28), and the fixed card holder (24) is provided with a limiting part (241) that engages with the first card block (9). The elastic reset member (422) abuts against the inner wall of the slide groove (42) at one end and against the first locking block (9) at the other end. Under normal conditions, it drives the first locking block (9) to protrude out of the slide groove (42) and abut against and lock against the limiting part (241). The unlocking push block (25) is slidably mounted on the fixed housing (28), and the end of the unlocking push block (25) abuts against the first locking block (9); When the unlocking push block (25) is pushed, the unlocking push block (25) drives the first locking block (9) to retract along the slide (42), causing the first locking block (9) to disengage from the limiting part (241), thereby unlocking the flip seat (4) and allowing the flip seat (4) to flip around the second pivot (20).

8. A child bathing stand with foldable armrests as described in claim 7, characterized in that... The slide groove (42) has an anti-detachment hole (421) on its side wall, and the first locking block (9) has an anti-detachment protrusion (91) embedded in the anti-detachment hole (421) on its side. The anti-detachment protrusion (91) is used to limit the sliding stroke of the first locking block (9) in the slide groove (42).

9. A child bathing stand with foldable armrests as described in claim 1, characterized in that... The rotating base (4) is symmetrically provided with rotating disks (44) on both sides, and the fixed housing (28) is provided with an annular guide rail (27) that matches the rotating disk (44); the outer edge of the rotating disk (44) is slidably fitted into the annular guide rail (27), and the axis of the rotating disk (44) is the second pivot (20).

10. A child bathing stand with foldable armrests as described in claim 1, characterized in that... The support (2) includes a telescopic assembly (23), which includes: 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; 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-hole mating 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) is 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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