Backrest adjusting mechanism and bathtub

Abstract

The technical scheme belongs to the field of articles for daily use, and particularly relates to a backrest adjusting mechanism and a bathtub, the backrest adjusting mechanism comprises a bathtub body, a backrest plate and a level adjusting assembly, the bathtub body is provided with a supporting frame, the supporting frame extends outwards to the rear side of the backrest plate, and the level adjusting assembly comprises a supporting part, a supporting part and a supporting part, the supporting part is hinged to the supporting frame and used for supporting the backrest plate; the adjusting piece is hinged to the rear side end face of the backrest plate, the end, away from the backrest plate, of the adjusting piece is arranged outside the supporting piece in a sleeving mode, the backrest plate is rotated to drive the adjusting piece, and the adjusting piece can be adjusted in a sliding mode relative to the supporting piece; the blocking structure is arranged between the supporting piece and the adjusting piece; the blocking structure can be switched between a locking state and an unlocking state; when the blocking structure is in the unlocking state, the blocking structure is separated from the supporting piece or the adjusting piece; when the blocking structure is in the locking state, the adjusting piece and the supporting piece are locked by the blocking structure, the backrest plate is adjusted to turn over by operating the blocking structure, the adaptability of the backrest plate is improved, and use is more convenient.

Description

TECHNICAL FIELD

[0001] The technical scheme relates to the technical field of bath tubs, and particularly relates to a backrest adjusting mechanism and a bath tub. BACKGROUND

[0002] A bath tub is a bathing device designed to contain water for the human body to clean, usually placed in the bathroom, and the bath tub has many categories in form and size, providing a comfortable bathing environment.

[0003] For example, Chinese patent CN203953454U discloses a multifunctional baby bath tub, which comprises a bath tub body, a drainage hole with a valve arranged at the bottom of the bath tub body, and a backrest arranged in the bath tub body for the baby to lie obliquely. The backrest gradually increases from the foot end to the head end and is provided with a backrest, so that the user (such as a baby) can maintain a lying posture during bathing, thereby reducing fatigue during bathing.

[0004] Although the baby bath tub has the backrest, the angle and height of the backrest are fixed, so it is difficult to meet the needs of users with different heights, body shapes and sitting postures. For people with higher body shapes, the backrest is too low to effectively support the back. For people with lower body shapes, the backrest is too high, and the back is pressed against the edge of the bath tub, which causes discomfort. Therefore, the backrest cannot provide appropriate back support for most users.

[0005] When the existing bath tub is used, in order to obtain sufficient comfort, a bath tub with a suitable backrest needs to be replaced, or a suitable bath frame needs to be placed in the bath tub. This not only increases the use cost, but also cannot meet the expected effect in terms of use inconvenience and complexity, resulting in trouble in use, which needs to be improved. SUMMARY

[0006] In order to improve the poor self-adaptability of the backrest of the bath tub, which cannot meet the needs of different users and causes trouble in use, the technical scheme provides a backrest adjusting mechanism and a bath tub.

[0007] The purpose of the technical scheme is achieved as follows.

[0008] The backrest adjusting mechanism and the bath tub comprise a tub body, a backrest plate hingedly connected to the end of the tub body, and a level adjusting assembly. The tub body is provided with a support frame extending outward to the back side of the backrest plate. The level adjusting assembly comprises:

[0009] a support member hingedly arranged on the support frame and used for supporting the backrest plate;

[0010] an adjusting member hingedly arranged on the back side end face of the backrest plate. One end of the adjusting member away from the backrest plate is slidingly arranged on the support member. The adjusting member and the support member can be relatively extended or retracted.

[0011] A clamping structure is arranged between the support and the adjusting member; the clamping structure can be switched between a locked state and an unlocked state; when the clamping structure is in the unlocked state, the clamping structure is separated from the support or the adjusting member; when the clamping structure is in the locked state, the clamping structure locks the adjusting member and the support.

[0012] According to the above technical solution, when the backrest adjusting mechanism is normally used, the clamping structure is operated to enter the unlocked state, at this time, the adjusting member can slide along the sleeving direction relative to the support, and the hinge joints of the support and the support frame and the hinge joints of the adjusting member and the backrest plate are correspondingly coordinated to rotate to adapt to various angle changes in the sliding adjustment process. After the adjusting member slides towards the direction of separating from the support, the support effect on the backrest plate is increased, and conversely, after the sleeving range of the adjusting member and the support is increased, the support effect on the backrest plate is reduced, the angle required by the backrest plate for free adjustment is realized, and the position relationship between the adjusting member and the support is fixed by locking the clamping structure again, so that the adjusting member cannot be adjusted, the backrest plate is ensured to be stable and not to shake, the angle adjustment between the components is smooth and the operation is convenient, the adaptability and user experience of the backrest plate are improved, and the use is more convenient.

[0013] Preferably, the clamping structure comprises a locking block hinged to the adjusting member, a clamping groove portion arranged on the support, and an elastic member;

[0014] The clamping groove portion is formed on the end face of the support close to the locking block, and the clamping groove portion comprises a plurality of positioning grooves, and each positioning groove is spaced apart along the sliding direction parallel to the adjusting member;

[0015] The side wall of the adjusting member is provided with a mounting groove, the locking block is hinged in the mounting groove, the lower part of one end of the locking block is provided with a positioning portion, the other end of the locking block is provided with the elastic member, the bottom of the mounting groove is formed with an abutting plate, the elastic member acts between the locking block and the abutting plate to make the positioning portion have a tendency to be embedded in the positioning groove, and the positioning portion can be fitted in different positioning grooves.

[0016] According to the above technical solution, one end of the locking block is pressed to overcome the elastic force of the elastic member to make the locking block rotate around the hinge, at this time, the other end positioning portion is separated from the positioning groove, the clamping structure enters the unlocked state, the positioning portion is not embedded in any positioning groove of the support, then the adjusting member is pushed to slide relative to the support, the locking block is synchronously moved, the positioning portion passes through each positioning groove in turn, each spaced positioning groove is used for step-by-step fitting of the positioning block, the positioning groove required to be fitted is aligned, the manual operation on the locking member is released, the positioning portion is stably embedded in the positioning groove under the elastic force of the elastic member, the clamping structure is locked, and the position relationship between the adjusting member and the support is stably fixed, the operation is simple, and the adjusting method is more convenient.

[0017] Preferably, the inner side wall of the positioning groove away from the support hinge axis side is a positioning face one, and the positioning face one makes the positioning groove gradually widen away from the support from the groove bottom to the groove opening;

[0018] The end face of the positioning part close to the positioning face one has a positioning face two, and the end of the positioning part can be matched with any of the positioning grooves.

[0019] Through the above technical scheme, the positioning face one makes the groove width of the positioning groove flared towards the positioning part, and the positioning part guides the embedding into the positioning groove through the contact of the positioning face two and the positioning face one, so that the embedding operation is more convenient, and the fitting accuracy is improved.

[0020] Preferably, the support has a limiting protrusion protruding from the end face of the support away from the clamping groove part side, the adjusting part corresponds to a limiting channel, and the limiting protrusion is located in the limiting channel;

[0021] The limiting protrusion slides along the limiting channel and can abut against the side end face in the limiting channel opposite to the through end to limit the maximum distance of the relative extension between the adjusting part and the support.

[0022] Through the above technical scheme, the user first unlocks the clamping structure, then slides the adjusting part to adjust the angle of the backrest plate, and as the adjusting part and the support slide relative to each other, the limiting protrusion on the support will smoothly slide along the limiting channel on the adjusting part. When adjusted to the maximum angle or when it is desired to ensure sufficient fitting amount, the limiting protrusion will continue to slide until it abuts against the side wall of the limiting channel. At this time, the fitting amount between the adjusting part and the support is limited within a certain range, ensuring the stability and reliability of the structure, making the adjustment process more intuitive and controllable, preventing the shaking problem caused by insufficient fitting amount, and improving the stability of the backrest plate.

[0023] Preferably, the abutting plate is provided with a positioning pin, the locking part protrudes a positioning sleeve corresponding to the position of the positioning pin, one end of the elastic part is sleeved on the positioning pin, and the other end is embedded in the positioning sleeve.

[0024] Through the above technical scheme, one end of the elastic part is embedded in the positioning sleeve, and the other end is sleeved on the positioning pin, the installation of the elastic part is completed, the falling or displacement of the elastic part is prevented, and the stability and reliability of the elastic part during long-term use are improved.

[0025] Preferably, the backrest plate protrudes a hinge part one, the adjusting part is provided with a hinge groove one corresponding to the end of the hinge part one, and the hinge part one is embedded in the hinge groove one.

[0026] The hinge part one has a hinge hole one, opposite side walls of the hinge groove are provided with hinge protrusions, opposite side walls of the hinge part one in the embedding direction are provided with guide surfaces, and the hinge part one is embedded into the hinge hole one through the guide surfaces guiding the hinge protrusions.

[0027] The hinge groove one on the adjusting part is aligned with the hinge part one of the backrest plate, the guide surfaces of the side walls of the hinge part one guide the smooth entry of the hinge groove one, the guide surfaces gradually guide the two hinge protrusions on the opposite sides of the adjusting part to be embedded into the two end through holes of the hinge hole one in a one-to-one correspondence, and a hinge relationship is formed, so that the accuracy and stability of the hinge between the backrest plate and the adjusting part are ensured, the installation steps are simplified, the inclined guide surfaces make the entire hinge process smoother, and the installation efficiency is improved.

[0028] Preferably, the backrest plate further has a long strip mold, and the hinge part one is formed on the long strip mold.

[0029] Through the above technical solution, the backrest plate is integrally formed with the long strip mold containing the hinge part one through mold stripping, so that the backrest plate can be hinged with the adjusting part through only a single point or a few points of the hinge part one, the hinge conversion from point to line is realized on the long strip mold, the problem of deformation of the backrest plate caused by the concentrated force of the user leaning on the backrest plate is solved, and the support stability and durability are improved.

[0030] Preferably, the support frame is formed with a support groove, the hinge groove two is arranged at the lower part of the support part in the support groove, and the hinge seat for embedding the hinge groove two is arranged at the bottom of the support groove.

[0031] Opposite inner side walls of the hinge groove two corresponding to the hinge axis of the support part are provided with hinge grooves, and opposite sides of the hinge seat are provided with hinge points corresponding to the hinge grooves for embedding, so that the support part and the hinge seat are hinged.

[0032] Opposite inner side walls of the hinge groove two are further provided with displacement grooves, the groove bottom of the displacement groove is inclined so that the groove width of the displacement groove is outwardly expanded away from the hinge groove, and the hinge point is correspondingly provided with an inclined side wall, which cooperates with the displacement groove to guide the embedding of the hinge point into the hinge groove.

[0033] Through the technical scheme, the part of the support member with the second hinging groove is embedded in the support groove, and the second hinging groove is aligned with the hinging seat, the accommodation groove is arranged on the inner side wall of the second hinging groove, the groove bottom is designed to be inclined, the groove width is gradually expanded outward from the hinging groove, the hinging points with the inclined side wall on the hinging seat are guided through the expansion, and the two side hinging points are smoothly and accurately embedded in the hinging groove, the hinging installation of the support member and the hinging seat is completed, the installation steps are simplified, the efficiency of the hinging installation is improved, and the accuracy and smoothness of the hinging process are ensured through the precise matching of the accommodation groove and the inclined side wall.

[0034] Preferably, the opposite sides of the locking member protrude with second hinging parts, the second hinging parts are each provided with a second hinging hole, and the opposite side walls in the installation groove each protrude with a hinging column;

[0035] The second hinging part has an inclined surface one, the inclined surface one is inclined in the direction of embedding and installing the locking member in the installation groove, the hinging column correspondingly has an inclined surface two, and the inclined surface two is connected with the inclined surface one to guide the hinging column to be embedded in the second hinging hole.

[0036] Through the technical scheme, the two second hinging parts of the locking member are embedded in the positions of the two hinging columns in the installation groove, the inclined surface one of the second hinging part is connected with the inclined surface two of the hinging column, the locking member is embedded and installed in the direction of the installation groove, the interaction between the inclined surface one and the inclined surface two guides the two hinging columns to be smoothly and accurately embedded in the two second hinging holes, the hinging installation of the locking member and the installation groove is completed, the installation steps are optimized, the efficiency of the hinging installation is improved, and the accuracy and smoothness of the hinging process are ensured through the precise matching of the accommodation groove and the inclined side wall.

[0037] Preferably, a bathtub comprises a bathtub body, a backrest plate, and a flexible connecting part integrally formed between the backrest plate and the bathtub body.

[0038] An edge frame is formed around an opening at an upper end of the bathtub body, the edge frame is provided with a insertion hole, and the support frame is provided with an insertion part embedded in the insertion hole.

[0039] Through the technical scheme, when the bathtub is normally used, the insertion part of the support frame is accurately aligned with the insertion hole on the edge frame, and then the insertion part is smoothly embedded in the insertion hole, so that the stable connection between the support frame and the bathtub body is realized, the backrest plate is integrally formed with the bathtub body through the flexible connecting part, the overall stability and comfort of the bathtub are enhanced, and the connecting part has sufficient sealing performance during the rotation of the backrest plate.

[0040] Compared with the prior art, the technical scheme has the following prominent and beneficial technical effects:

[0041] 1. This technical solution features a locking mechanism between the support and the adjusting component. This mechanism can switch between locked and unlocked states. When unlocked, the adjusting component slides relative to the support component along the assembly direction, allowing for coordinated rotation of the hinges between the support and the support frame, as well as the hinges between the adjusting component and the backrest panel. This enables free adjustment of the backrest panel angle. When locked, the adjusting component is fixed to the support component to limit adjustment, ensuring the backrest panel is stable and does not wobble. This makes angle adjustment between components smooth and convenient, improving the adaptability of the backrest panel and the user experience, making it more convenient to use. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0043] Figure 2 This is a partial explosion diagram of this embodiment;

[0044] Figure 3 This is a partial exploded view of the modulation component in the embodiment;

[0045] Figure 4 This embodiment Figure 3 Another perspective illustration;

[0046] Figure 5 This is a partial cross-sectional view of this embodiment;

[0047] Figure 6 This embodiment Figure 5 Enlarged view of a portion;

[0048] Figure 7 This embodiment Figure 1 Another state diagram.

[0049] Reference numerals: 1. Basin; 2. Backrest panel; 4. Adjustment assembly; 41. Support component; 42. Adjustment component; 43. Locking structure; 431. Locking block; 432. Slot; 433. Elastic component; 5. Support frame; 6. Positioning slot; 7. Mounting slot; 8. Positioning part; 9. Backing plate; 10. Positioning surface one; 11. Positioning surface two; 12. Limiting protrusion; 13. Limiting channel; 14. Positioning pin; 15. Positioning sleeve; 16. Hinge part one; 17. Hinge groove 18. Hinge Hole 1; 19. Hinge Protrusion; 20. Guide Surface; 21. Long Strip Mold; 22. Support Groove; 23. Hinge Groove 2; 24. Hinge Seat; 25. Hinge Recess; 26. Hinge Point; 27. Clearance Groove; 28. Inclined Side Wall; 29. ​​Hinge Part 2; 30. Hinge Hole 2; 31. Hinge Column; 32. Inclined Surface 1; 33. Inclined Surface 2; 34. Bathtub Body; 36. Flexible Connection Part; 37. Basin Frame; 38. Insertion Hole; 39. Insertion Part. Detailed Implementation

[0050] The specific embodiments of the technical solutions will be described in further detail below with reference to the drawings.

[0051] Embodiments

[0052] Referring to Figure 1 A backrest adjusting mechanism, comprising a basin body 1, a backrest plate 2 and an adjusting assembly 4, the backrest plate 2 is located at one end of the basin body 1, the lower end of the basin body 1 is hinged, and the hinge axis is arranged horizontally, the basin body 1 is provided with a support frame 5, which is located at one end of the basin body 1 provided with the backrest plate 2, and extends outward to the back side of the backrest plate 2.

[0053] Referring to Figure 2 And Figure 4 The adjusting assembly 4 comprises a supporting piece 41, an adjusting piece 42 and a clamping structure 43, the adjusting piece 42 is hinged with the backrest plate 2, and the hinge axis is parallel to the hinge axis of the backrest plate 2, and the specific hinge mode is that the backrest plate 2 has two long strip molds 21, which are integrally formed on the back side end face of the backrest plate 2 away from the basin body 1, and are arranged in the vertical direction on the end face, the backrest plate 2 protrudes with two hinge parts 16, each of which is provided with two corresponding long strip molds 21, each hinge part 16 is integrally formed on the corresponding long strip mold 21, and each hinge part 16 penetrates the hinge hole 18; the adjusting piece 42 is provided with two hinge grooves 17 corresponding to one end of the hinge part 16, the positions of the two hinge grooves 17 are corresponding to the two hinge parts 16, so that the two hinge parts 16 can be embedded in the two hinge grooves 17, the relative end face of each hinge part 16 along the embedding direction has a guide surface 20, and the guide surfaces 20 on both sides cooperate to make the embedding end of the hinge part 16 gradually narrow outward, and the relative inner wall of each hinge groove protrudes with two hinge protrusions 19, when the hinge part 16 is embedded in the corresponding hinge groove 17, the two hinge protrusions 19 are embedded in the through ports at both ends of the hinge hole 18 in pairs, so as to realize the hinge connection between the adjusting piece 42 and the backrest plate 2.

[0054] The adjusting member 42 is sleeved on the outside of the supporting member 41 away from the hinged position of the backrest plate 2, and is capable of sliding adjustment along the sleeving direction relative to the supporting member 41 by rotating the backrest plate 2; the supporting member 41 is hinged with the supporting frame 5, and the hinged axis is parallel to the hinged axis of the adjusting member 42 and the backrest plate 2, and the hinged manner is that a supporting groove 22 is formed on the upper end of the supporting frame 5, which is matched with the lower end of the adjusting member 42 for embedding the adjusting member 42, and a hinged seat 24 is protruded from the inner wall of the supporting groove 22 along the embedding direction of the adjusting member 42, the hinged seat 24 has two hinged points 26, and the two hinged points 26 are respectively protruded from the opposite end faces of the hinged seat 24 along the hinged axis of the supporting member 41; the lower part of the supporting member 41 embedded in the supporting groove 22 is provided with a hinged groove two 23, the groove direction of which faces the hinged seat 24 and is embedded and matched with each other, and the opposite inner side walls of the hinged groove two 23 are both provided with a hinged recess 25, and the two hinged recesses 25 are respectively arranged corresponding to the two hinged points 26, and the opposite inner side walls of the hinged groove two 23 are also provided with a displacement slot 27 corresponding to the two hinged recesses 25, one end of each displacement slot 27 penetrates into the hinged groove two 23, and the other end penetrates out of the supporting member 41, the slot bottom of the displacement slot 27 is inclined so that the slot width of the displacement slot 27 is outwardly flared away from the hinged recess 25, each hinged point 26 has an inclined side wall 28 corresponding thereto, and the two inclined side walls 28 correspond to the two displacement slots 27, and each inclined side wall 28 cooperates with the corresponding displacement slot 27 to guide the hinged point 26 to be embedded in the hinged recess 25, so as to realize the hinging of the supporting member 41 and the supporting frame 5.

[0055] The supporting member 41 has a limiting protrusion 12 protruding from the end face of the supporting member 41 away from the clamping groove part 432, and the adjusting member 42 is correspondingly provided with a limiting channel 13, and the limiting protrusion 12 is located in the limiting channel 13, and when the adjusting member 42 slides relative to the supporting member 41, the limiting protrusion 12 moves along the limiting channel 13, and one end of the limiting protrusion 12 can abut against the inner wall of the limiting channel 13 opposite to the penetrating end.

[0056] Referring to Figure 3 and Figure 4, the clamping structure 43 comprises a locking block 431, a clamping groove 432 and an elastic member 433, the locking block 431 is hinged with the adjusting member 42, the hinged axis is parallel to the hinged axis of the adjusting member 42 and the backrest plate 2, the side wall of the adjusting member 42 is provided with a mounting groove 7, the locking block 431 is embedded in the mounting groove 7, the adjusting member 42 is provided with two hinged parts two 29 on the opposite sides in the embedding direction, each hinged part two 29 is provided with a hinged hole two 30, and each hinged part two 29 has an inclined surface one 32, which is inclined along the embedding direction of the hinged part two 29 relative to the locking block 431, the opposite side walls in the mounting groove 7 are provided with a hinged column 31, the two hinged columns 31 and the two hinged holes one 18 are correspondingly arranged, each hinged column 31 has an inclined surface two 33, the two inclined surfaces two 33 are matched with the two inclined surfaces one 32, so that the two inclined surfaces two 33 and the two inclined surfaces one 32 are connected to guide the hinged column 31 to be embedded in the corresponding hinged hole two 30, and the hinged of the locking block 431 and the adjusting member 42 is realized.

[0057] The bottom of the mounting groove 7 is formed with an abutting plate 9, the abutting plate 9 protrudes towards the inside of the mounting groove 7 and is provided with a positioning pin 14, the locking block 431 is provided with a positioning sleeve 15 corresponding to the lower end surface of the positioning pin 14, one end of the elastic member 433 is sleeved on the positioning pin 14, and the other end is embedded in the positioning sleeve 15, and the locking block 431 further has a positioning part 8 on the side away from the positioning sleeve 15, and the positioning part 8 has a positioning surface two 11, which is arranged in an inclined surface.

[0058] Referring to Figure 3 and Figure 6 , the clamping groove 432 is located on the end face of the supporting member 41 close to the locking block 431, the clamping groove 432 comprises a plurality of positioning grooves 6, each positioning groove 6 is spaced apart along the sliding direction parallel to the adjusting member 42, the inner side wall of each positioning groove 6 away from the hinged axis of the supporting member 41 is a positioning surface one 10, which is arranged in an inclined surface, and each positioning surface one 10 makes the corresponding positioning groove 6 gradually widen from the groove bottom to the groove opening away from the supporting member 41, so that the shape of each positioning groove 6 is matched with the end part provided with the positioning surface two 11 of the positioning part 8, the elastic member 433 acts between the locking block 431 and the abutting plate 9, so that the locking block 431 rotates, the positioning part 8 has a tendency to be embedded in the positioning groove 6, so that the positioning part 8 can be embedded in different positioning grooves 6.

[0059] The clamping structure 43 can be switched between the locked state and the unlocked state, when the positioning part 8 is embedded in the positioning groove 6, at this time the clamping structure 43 is unlocked, the adjusting member 42 slides along the supporting member 41 to adjust the angle of the backrest plate 2, when the locking block 431 is pressed to make the positioning part 8 continuously separate from the positioning groove 6, at this time the clamping structure 43 is locked, and the positional relationship between the adjusting member 42 and the supporting member 41 is relatively fixed.

[0060] Referring toFigure 6 and Figure 7 When the adjusting piece 42 slides away from the supporting piece 41, the limiting protrusion 12 slides along the limiting channel 13 until it abuts against the sidewall of the limiting channel 13, limiting the relative extension between the adjusting piece 42 and the supporting piece 41, at this time, the fitting amount α of the adjusting piece 42 and the supporting piece 41 is greater than or equal to 18mm, and in the embodiment, the α is preferably 18mm.

[0061] The specific working process of the scheme is as follows:

[0062] The technical scheme enters the unlocking state through the operation of the clamping structure 43, at this time, the adjusting piece 42 can slide relative to the supporting piece 41 in the fitting direction, the supporting piece 41 and the hinge of the supporting frame 5 and the hinge of the adjusting piece 42 and the backrest plate 2 are correspondingly coordinated to rotate to adapt to various angle changes in the sliding adjustment process, the adjusting piece 42 slides towards the direction of separating from the supporting piece 41, thereby increasing the supporting effect on the backrest plate 2, on the contrary, after the adjusting piece 42 increases the fitting range of the supporting piece 41, the supporting effect on the backrest plate 2 is reduced, the required angle of the backrest plate 2 is freely adjusted, and through the re-operation of the clamping structure 43, the positional relationship between the adjusting piece 42 and the supporting piece 41 is firmly fixed, the adjustment is limited, the backrest plate 2 is stably fixed and does not shake, the angle adjustment between the components is smooth and the operation is convenient, the adaptability and user experience of the backrest plate 2 are improved, and the use is more convenient.

[0063] Referring to Figure 1 Figure 2 A bathtub includes a bathtub body 34, a backrest plate 2 and a tub body 1 integrally formed with a flexible connecting part 36 between them, which is arranged on both sides of the backrest plate 2 one by one and has a certain flexibility, so that when the backrest plate 2 rotates around the hinge, the flexible connecting part 36 can cooperate with the deformation, the tub body 1 has a tub frame 37 which is formed around the opening at the upper end of the tub body 1, the tub frame 37 has a jack 38 near the two side ends of the supporting frame 5, the supporting frame 5 is provided with two plug-in parts 39, and after the two plug-in parts 39 and the two jacks 38 are fitted one by one, the fixed connection between the supporting frame 5 and the tub frame 37 is realized through bolt connection.

[0064] The basic principles and main features of the technical scheme and the advantages of the technical scheme are shown and described above. It should be understood by those skilled in the art that the technical scheme is not limited by the above embodiments, the above embodiments and the description in the specification are only to illustrate the principles of the technical scheme, and various changes and improvements can be made to the technical scheme without departing from the spirit and scope of the technical scheme, and these changes and improvements all fall within the scope of the claimed technical scheme. The scope of protection of the technical scheme is defined by the appended claims and their equivalents.

Claims

1. A backrest adjustment mechanism comprising a tub (1), a backrest plate (2) hinged to the end of the tub (1), and a step adjustment assembly (4), said tub (1) being provided with a support frame (5) extending outwardly to the rear side of said backrest plate (2), characterized in that, The adjusting assembly (4) comprises: a support (41) hingedly arranged on the support frame (5); an adjusting member (42) hingedly arranged on the rear end surface of the backrest plate (2), the end of the adjusting member (42) away from the backrest plate (2) being slidingly arranged on the support (41); the adjusting member (42) and the support (41) can be relatively extended or retracted; a locking structure (43) arranged between the support (41) and the adjusting member (42); the locking structure (43) can be switched between a locked state and an unlocked state; when the locking structure (43) is in the unlocked state, the locking structure (43) is separated from the support (41) or the adjusting member (42); when the locking structure (43) is in the locked state, the locking structure (43) locks the adjusting member (42) and the support (41).

2. A backrest adjustment mechanism according to claim 1, characterised in that: The locking structure (43) comprises a locking block (431) hingedly arranged on the adjusting member (42), a clamping groove portion (432) arranged on the support (41), and an elastic member (433); The clamping groove portion (432) is formed on the end surface of the support (41) close to the locking block (431), and the clamping groove portion (432) comprises a plurality of positioning grooves (6), each of which is spaced apart along the sliding direction of the adjusting member (42); The side wall of the adjusting member (42) is provided with a mounting groove (7), the locking block (431) is hingedly arranged in the mounting groove (7), the lower part of one end of the locking block (431) is provided with a positioning portion (8), the other end is provided with the elastic member (433), the bottom of the mounting groove (7) is formed with an abutting plate (9), and the elastic member (433) acts between the locking block (431) and the abutting plate (9) to make the positioning portion (8) have a tendency to be embedded in the positioning groove (6), and the positioning portion (8) can be fitted with different positioning grooves (6).

3. A backrest adjustment mechanism according to claim 2, wherein: The inner side wall of the positioning groove (6) away from the axis of the support (41) is a positioning surface one (10), and the positioning surface one (10) makes the positioning groove (6) gradually widen from the groove bottom to the groove opening away from the support (41); The end surface of the positioning portion (8) close to the positioning surface one (10) is provided with a positioning surface two (11), and the end portion of the positioning portion (8) can be fitted with any of the positioning grooves (6).

4. A backrest adjustment mechanism according to claim 1, characterised in that: The support (41) is provided with a limiting protrusion (12) protruding from the end surface of the support (41) away from the clamping groove portion (432), and the adjusting member (42) is correspondingly provided with a limiting channel (13), and the limiting protrusion (12) is located in the limiting channel (13); The limiting protrusion (12) slides along the limiting channel (13) and can abut against the end surface of the limiting channel (13) opposite to the through end to limit the maximum distance of relative extension between the adjusting member (42) and the support (41).

5. A backrest adjustment mechanism according to claim 2, wherein: The abutting plate (9) is provided with a positioning pin (14), the locking block (431) is provided with a positioning sleeve (15) corresponding to the position of the positioning pin (14), one end of the elastic member (433) is sleeved on the positioning pin (14), and the other end is embedded in the positioning sleeve (15).

6. A backrest adjustment mechanism according to claim 5, wherein: The backrest plate (2) is provided with a hinge part one (16), the adjusting member (42) is provided with a hinge groove one (17) corresponding to one end of the hinge part one (16), and the hinge part one (16) is embedded in the hinge groove one (17). The hinge part one (16) is provided with a hinge hole one (18), the opposite side walls of the hinge groove are provided with hinge protrusions (19), the opposite side walls of the hinge part one (16) in the embedding direction are provided with guide surfaces (20), and the hinge part one (16) is guided by the guide surfaces (20) to embed the hinge protrusions (19) into the hinge hole one (18).

7. A backrest adjustment mechanism according to claim 6, wherein: The backrest plate (2) is further provided with a long strip die (21), and the hinge part one (16) is formed on the long strip die (21).

8. A backrest adjustment mechanism according to claim 1, characterised in that: The support frame (5) is formed with a support groove (22), the support member (41) is provided with a hinge groove two (23) at a lower portion in the support groove (22), and the bottom of the support groove (22) is provided with a hinge seat (24) for embedding the hinge groove two (23). The hinge groove two (23) is provided with a hinge groove (25) corresponding to the opposite inner side walls of the hinge axis of the support member (41), the opposite sides of the hinge seat (24) are provided with hinge points (26), the hinge points (26) are embedded in the hinge groove (25) one by one, and the support member (41) is hinged with the hinge seat (24). The opposite inner side walls of the hinge groove two (23) are further provided with a displacement groove (27), the groove bottom of the displacement groove (27) is inclined, the groove width of the displacement groove (27) is expanded outward away from the hinge groove (25), the hinge point (26) corresponds to an inclined side wall (28), and the inclined side wall (28) cooperates with the displacement groove (27) to guide the embedding of the hinge point (26) into the hinge groove (25).

9. A backrest adjustment mechanism according to claim 2, wherein: The opposite sides of the locking block (431) are provided with hinge part two (29), the hinge part two (29) is provided with a hinge hole two (30), and the opposite side walls in the mounting groove (7) are provided with a hinge column (31). The hinge part two (29) is provided with an inclined surface one (32), the inclined surface one (32) is inclined in the direction of embedding the locking block (431) into the mounting groove (7), the hinge column (31) corresponds to an inclined surface two (33), and the inclined surface two (33) cooperates with the inclined surface one (32) to guide the embedding of the hinge column (31) into the hinge hole two (30).

10. A bath comprising a bath body (34), characterised in that: The backrest plate (2) and the basin body (1) are integrally formed with a flexible connecting part (36). The backrest plate (2) and the basin body (1) are integrally formed with a flexible connecting part (36). The basin body (1) is provided with a basin frame (37) around the upper end opening, the basin frame (37) is provided with a insertion hole (38), and the support frame (5) is provided with an insertion part (39) embedded in the insertion hole (38).

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