Footrest assembly and sitting and lying device

Abstract

The embodiments of this specification provide a footrest assembly and a sitting and lying device, wherein the footrest assembly includes a support portion and an assembly portion, wherein the support portion includes a support rod and a footrest member, wherein the footrest member is provided at the first end of the support rod and supports the user's foot during operation, and when the footrest assembly is connected to the sitting and lying device, the assembly portion assembles the second end of the support rod with the mounting portion of the sitting and lying device, wherein the mounting portion is provided with a mounting through-hole, and the cross-sectional dimension of the second end of the support rod is smaller than d, which is the cross-sectional dimension of the smallest mounting through-hole in a variety of sitting and lying devices. When the footrest assembly is assembled to any of the various sitting and lying devices, the second end of the support rod passes through the mounting through-hole, and the assembly portion is fixed to the second end of the support rod and clamps the mounting portion in the axial direction of the mounting through-hole to fix the position of the support rod in the axial and radial directions of the mounting through-hole. The above-mentioned footrest assembly can be assembled to a variety of sitting and lying devices to support the user's feet and improve the user's sitting and lying comfort.

Description

Technical Field

[0001] The embodiments of this specification relate to the field of mechanical technology, and more particularly to a footrest assembly and a sitting and lying device. Background Art

[0002] A sitting and lying device can refer to a device that allows a user to sit and / or lie down. These devices can take various forms and be used in a variety of scenarios. For example, during a gynecological examination, a user may lie on a gynecological examination bed to assist with the doctor's examination. During childbirth, a user may lie on a delivery bed to deliver the baby. A user with a leg injury may use a wheelchair for mobility, and so on.

[0003] Typically, a sitting and lying device includes a back support component and a hip support component, which can support the user's back and hips. Some sitting and lying devices are also provided with a leg support component, which can provide certain support for the user's calf area. When the user uses the above-mentioned sitting and lying device, the feet are in a suspended state, which makes the comfort poor. Especially in scenarios such as gynecological examinations and childbirth, the user needs to maintain a certain leg posture and needs to cooperate with the force (such as the force during childbirth). When the feet are in a suspended state, it is difficult for the user to maintain the leg posture for a long time and it is difficult to cooperate with the force. Therefore, the above-mentioned sitting and lying device is not conducive to the smooth progress of gynecological examinations and childbirth.

[0004] The content of the background technology section is merely information known to the inventor personally, and does not mean that the above information has entered the public domain before the application date of this disclosure, nor does it mean that it can become the prior art of the present disclosure. Summary of the Invention

[0005] The embodiments of this specification provide a footrest assembly and a sitting / reclining device. The footrest assembly can be assembled into a variety of sitting / reclining devices to support the user's feet and enhance the user's comfort while sitting or lying. In particular, during gynecological examinations and childbirth, the footrest assembly helps the user maintain leg posture and exert force, thereby ensuring smooth gynecological examinations and childbirth.

[0006] 14. The foot rest as claimed in claim 13, wherein the foot rest comprises a first end and a second end, the first end of the support rod being fixed to the support rod and a second end of the support rod being fixed to the support rod.

[0007] In some embodiments, the assembly portion includes a first assembly part and a second assembly part, wherein the fixed position of the first assembly part on the support rod is located on the first side of the mounting portion and is abutted against the surface of the first side of the mounting portion, and the fixed position of the second assembly part on the support rod is located on the second side of the mounting portion and is abutted against the surface of the second side of the mounting portion, wherein the first side and the second side are respectively two sides of the mounting portion along the axial direction of the mounting through hole.

[0008] In some embodiments, at least one of the first assembly part and the second assembly part includes: a clamping part and an adjusting part, wherein the clamping part is clamped at the second end of the support rod, and two locking plates are formed at both ends of the clamping part, the two locking plates are arranged opposite to each other and spaced a preset distance apart, and locking through holes are respectively provided at the relative positions of the two locking plates, and the adjusting part passes through the locking through holes and is used to adjust the distance between the two locking plates, wherein the clamping force of the clamping part on the support rod increases when the distance between the two locking plates is compressed, and the clamping force of the clamping part on the support rod decreases when the distance between the two locking plates is expanded.

[0009] In some embodiments, the adjusting component includes a connecting rod, a limit block and an adjusting handle, wherein one end of the connecting rod passes through the locking through hole, and the other end abuts against one of the two locking plates, the limit block is connected to the end of the connecting rod passing through the locking through hole, and abuts against the other of the two locking plates, one end of the adjusting handle is rotatably connected to the end of the connecting rod passing through the locking through hole, and is provided with a cam structure, the surface of the cam structure abuts against the limit block, wherein when the adjusting handle is pulled in a first direction, the cam structure compresses the distance between the two locking plates, and when the adjusting handle is pulled in a second direction, the cam structure expands the distance between the two locking plates.

[0010] In some embodiments, at least a portion of the outer surface of the second end of the support rod is provided with threads, and at least one of the first assembly part and the second assembly part includes a nut, which is threadedly connected to the second end of the support rod.

[0011] In some embodiments, the nut is a butterfly nut; or, the periphery of the nut is covered with a knob sleeve suitable for manual tightening.

[0012] In some embodiments, at least one of the first assembly part and the second assembly part includes a sleeve and a bolt, the sleeve is sleeved on the second end of the support rod, a bolt hole is opened on the side of the sleeve, and the bolt matches the bolt hole. When the bolt is screwed into the bolt hole and abuts against the side surface of the support rod, the sleeve is fixed to the second end of the support rod.

[0013] In some embodiments, the operating end of the bolt is provided with an operating rod, the operating rod is perpendicular to the length direction of the bolt, and the length of the operating rod is greater than or equal to a preset length, so that the operating rod is suitable for hand-pulling; or, the operating end of the bolt is provided with a knob suitable for manual rotation.

[0014] In some embodiments, the support rod has a preset curvature, which is adapted to the curvature of the legs of the user when using the sitting and lying device.

[0015] In some embodiments, a surface of the foot support that contacts the foot is provided with a plurality of protrusions.

[0016] In some embodiments, a portion of the surface of the foot support that contacts the foot is recessed inward to form a foot contact area. The foot contact area is shaped like a sole of a foot, and the plurality of protrusions are formed in the foot contact area.

[0017] In some embodiments, the foot support is integrally formed at the first end of the support rod.

[0018] In some embodiments, the foot support is detachably connected to the first end of the support rod.

[0019] In some embodiments, the installation angle of the foot support relative to the first end is adjustable and can be relatively fixed.

[0020] In some embodiments, the first end of the support rod is provided with a first mounting platform, the first mounting platform is provided with a first mounting hole, the foot support is provided with a second mounting platform, the second mounting platform is provided with a second mounting hole matching the first mounting hole, the first end of the support rod and the foot support are fixed through the first mounting hole and the second mounting hole, wherein at least one of the first mounting hole and the second mounting hole is an adjustable mounting hole, so that the mounting angle of the first end of the support rod and the foot support is adjustable.

[0021] In a second aspect, the present specification also provides a sitting and lying device, comprising: a bracket, a sitting and lying portion, and a footrest assembly as described in any one of the first aspects, wherein the bracket is provided with a mounting portion, the mounting portion is provided with a mounting through hole, the sitting and lying portion is provided on the bracket for the user to sit and lie, the footrest assembly is detachably connected to the mounting portion, and when the user uses the sitting and lying device, the footrest assembly supports the user's feet.

[0022] It can be seen that the footrest assembly provided in the embodiments of this specification can be assembled on a variety of sitting and lying devices to support the user's feet and improve the user's sitting and lying comfort; especially in scenarios such as gynecological examinations and childbirth, the footrest assembly helps the user maintain leg posture and cooperate with the force, thereby ensuring the smooth progress of gynecological examinations and childbirth. In addition, because the footrest assembly can be assembled on an existing sitting and lying device by reusing the mounting portion of the existing sitting and lying device, the purchaser only needs to purchase the footrest assembly and assemble the footrest assembly on the existing sitting and lying device to obtain a sitting and lying device with foot support function, without having to purchase a new sitting and lying device, thereby saving purchase costs.

[0023] Other functions of the footrest assembly and the sitting and lying device provided by this specification will be partially listed in the following description. The creative aspects of the footrest assembly and the sitting and lying device provided by this specification can be fully explained by practicing or using the methods, devices and combinations described in the following detailed examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of this specification, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 A structural schematic diagram of a sitting and lying device is shown;

[0026] Figure 2 Shows a schematic structural diagram of the assembly of the footrest assembly and the sitting and lying device;

[0027] Figure 3 Shown Figure 2 The schematic diagram of the partial explosion structure of the footrest assembly and the sitting and lying device shown;

[0028] Figure 4 Shown Figure 2 and Figure 3 A schematic cross-sectional view of the mounting portion along the radial direction of the mounting through hole;

[0029] Figure 5 Shows a structural schematic diagram of a clamping and fastening assembly;

[0030] Figure 6 Shows a structural schematic diagram of another clamping and fastening assembly;

[0031] Figure 7 Shows a structural schematic diagram of a top screw fastening assembly;

[0032] Figure 8 A structural diagram of a threaded fastening assembly is shown;

[0033] Figure 9 A schematic structural diagram of a foot support is shown; and

[0034] Figure 10 A schematic diagram showing a connection method between the foot support member and the support rod. DETAILED DESCRIPTION

[0035] The following description provides specific application scenarios and requirements for this specification, with the goal of enabling those skilled in the art to make and use the contents of this specification. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but is intended to be accorded the broadest scope consistent with the claims.

[0036] The terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. For example, as used herein, the singular forms "a," "an," and "the" may also include the plural forms unless the context clearly indicates otherwise. When used in this specification, the terms "comprise," "include," and / or "contain" are intended to refer to the presence of the associated integers, steps, operations, elements, and / or components, but do not preclude the presence of one or more other features, integers, steps, operations, elements, components, and / or groups or the addition of other features, integers, steps, operations, elements, components, and / or groups in the system / method.

[0037] These and other features of this specification, as well as the operation and function of the associated elements of the structure, and the economical assembly and manufacture of the components, can be significantly improved with consideration of the following description. Reference is made to the accompanying drawings, all of which form a part of this specification. However, it should be expressly understood that the drawings are for illustration and description purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0038] In the embodiments of this specification, prefixes such as "first" and "second" are used solely to distinguish and describe different items belonging to the same category and do not constrain the order or quantity of the items. For example, "first information" and "second information" simply refer to information with different contents or purposes. There is no temporal or priority relationship between the two. The first information may be one or more items, and the second information may also be one or more items.

[0039] In the embodiments of this specification, "at least one" refers to one or more, and "more" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the following three situations: A exists alone; A and B exist at the same time; B exists alone; wherein A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a; b; c; a and b; a and c; b and c; or a, b, and c. wherein a, b, and c can be single or multiple.

[0040] In the embodiments of this specification, a sitting and lying device may refer to a device for a user to sit and / or lie (lying may include but is not limited to half-lying, fully lying, etc.). The sitting and lying device may have various forms and be used in various scenarios. In some embodiments, the sitting and lying device may be in a form similar to a seat, for example, the sitting and lying device may be a wheelchair, a massage chair, etc., in which case the user can sit on the device. In some embodiments, the sitting and lying device may be in a form similar to a bed, for example, the sitting and lying device may be a medical bed (such as a gynecological examination bed, a delivery bed, an operating bed, etc.), a beauty bed, a bed for massage, etc., in which case the user can half-lying / fully lying on the device. In some embodiments, the sitting and lying device may also have a deformable structure, for example, the angle between the backrest and the seat cushion of the sitting and lying device may be adjusted. In this case, the sitting and lying device may be used as both a seat and a bed, that is, the user may sit on the device or lie on the device.

[0041] It should be noted that the above descriptions of the application scenarios of the sitting and reclining device are merely examples of possible scenarios, and the embodiments of this specification do not limit the specific application scenarios of the sitting and reclining device. Those skilled in the art will understand that in addition to the scenarios listed above, the sitting and reclining device provided in the embodiments of this specification can also be applied in other scenarios, such as massage chairs, sofas, etc. For ease of presentation and understanding, the following examples in this specification will use the sitting and reclining device in scenarios such as gynecological examinations and childbirth as examples.

[0042] Figure 1 FIG. 1 shows a structural diagram of a sitting and lying device 100. Figure 1 As shown, the sitting and lying device 100 may include a support 10 and a sitting and lying portion 20 .

[0043] The support frame 10 may serve as the support base for the sitting / reclining device 100. The sitting / reclining portion 20 may be disposed on the support frame 10. The support frame 10 provides stable support for the sitting / reclining portion 20. The support frame 10 may have various configurations, and this specification does not limit the specific configuration of the support frame 10. For example, in some embodiments, the support frame 10 may include multiple support legs. In some embodiments, the support frame 10 may include multiple wheels to facilitate the movement of the sitting / reclining device.

[0044] The sitting and lying portion 20 can be used for the user to sit and / or lie. In some embodiments, the sitting and lying portion 20 can be flat, and the user can lie flat on the sitting and lying device 100. In some embodiments, see Figure 1The sitting / reclining portion 20 may include a back support assembly 21 and a hip support assembly 22. The back support assembly 21 may support the user's back, and the hip support assembly 22 may support the user's hips. The angle between the back support assembly 21 and the hip support assembly 22 is adjustable. Specifically, when the angle between the back support assembly 21 and the hip support assembly 22 is approximately 180 degrees, the user can lie flat on the sitting / reclining device 100. When the angle between the back support assembly 21 and the hip support assembly 22 is approximately 90 degrees, the user can sit on the sitting / reclining device 100. When the angle between the back support assembly 21 and the hip support assembly 22 is greater than 90 degrees and less than 180 degrees, the user can half-recline on the sitting / reclining device 100. Thus, the adjustable angle between the back support assembly 21 and the hip support assembly 22 makes the sitting / reclining device 100 more flexible to use.

[0045] In some embodiments, the sitting and lying device 100 may further include a leg support assembly 30. Figure 1 As shown, the leg rest assembly 30 includes an assembly rod 31 and a leg rest member 32. The leg rest member 32 is disposed at one end of the assembly rod 31. A mounting portion 11 may be provided on the bracket 10 or the sitting / reclining portion 20. The mounting portion 11 is provided with a mounting hole 12 that matches the cross-sectional dimensions of the assembly rod 31. The other end of the assembly rod 31 is secured to the bracket 10 via the mounting hole 12. When a user uses the sitting / reclining device 100, they can place their calves or thighs on the leg rest member 32. This provides some support for the user's legs.

[0046] When users use Figure 1 When using the sitting and lying device shown, although the user's back, buttocks and legs are all supported, the user's feet are in a suspended state, which makes the user uncomfortable. Especially in scenarios such as gynecological examinations and childbirth, the user needs to maintain a certain leg posture and need to exert force (for example, exerting force during childbirth). When the feet are in a suspended state, it is difficult for the user to maintain the leg posture for a long time and it is difficult to cooperate with the force. Figure 1 The sitting and lying device 100 shown is not conducive to the smooth progress of obstetrics and gynecology examinations and childbirth.

[0047] To this end, the present invention provides a footrest assembly for a sitting and lying device. The footrest assembly can be assembled on a Figure 1The footrest assembly is provided on the sitting and lying device shown, and supports the user's feet to prevent the feet from being suspended in the air, thereby improving the user's sitting and lying comfort. Especially in scenarios such as gynecological examinations and childbirth, the support of the user's feet by the footrest assembly is conducive to the user maintaining the leg posture for a long time and coordinating the force, thereby ensuring the smooth progress of gynecological examinations and childbirth. Moreover, the footrest assembly provided in this specification can be assembled on a variety of different sitting and lying devices 100. At the same time, the footrest assembly provided in this specification can be directly installed with a sitting and lying device 100 that does not have a footrest assembly in the prior art through the mounting portion 11 in the sitting and lying device 100. Therefore, the purchaser only needs to purchase the footrest assembly and assemble the footrest assembly to the existing sitting and lying device 100 to obtain a sitting and lying device 100 with a foot support function, without having to purchase a new sitting and lying device 100, thereby saving purchase costs.

[0048] The following combination Figures 2 to 10 The footrest assembly and the assembly of the footrest assembly and the sitting and lying device are described in detail.

[0049] Figure 2 A schematic structural diagram showing the assembly of the footrest assembly 40 and the sitting and lying device 100 is shown; Figure 3 Shown Figure 2 The schematic diagram of the partial explosion structure of the footrest assembly 40 and the sitting and lying device 100 is shown. Figure 2 and Figure 3 As shown, the footrest assembly 40 provided in the embodiment of this specification can be assembled with the sitting and lying device 100. When the user uses the sitting and lying device 100, the footrest assembly 40 can support the user's feet. It should be noted that the footrest assembly 40 can be used in conjunction with a variety of sitting and lying devices 100 of different forms and sizes, rather than being applicable to only a certain type of sitting and lying device 100. For ease of description and understanding, the footrest assembly 40 is used in conjunction with Figure 1 The illustrated sitting and lying device 100 is used as an example for explanation.

[0050] like Figure 2 and Figure 3 As shown, the footrest assembly 40 may include a supporting portion 41 and an assembly portion 42. The assembly portion 42 is used to assemble the footrest assembly 40 with the sitting and lying device 100, and the supporting portion 41 is used to support the feet of the user (the user using the sitting and lying device 100).

[0051] Continue to see Figure 2, the support portion 41 may include a support rod 411 and a foot support member 412. The support rod 411 is generally in the shape of a slender rod and has two ends. For the convenience of description, the two ends of the support rod 411 are referred to as the first end and the second end in this embodiment of the specification. Among them, the foot support member 412 can be provided at the first end of the support rod 411 to support the feet of the user (the user using the sitting and lying device 100) during operation. The second end of the support rod 411 can be used to connect to the sitting and lying device 100. The shape of the support rod 411 can be adapted to the installation of the support rod 411 and the shape of supporting the user's feet. For example, the support rod 411 can have a shape with a certain curvature so that the second end can be installed with the sitting and lying device 100, and the first end can be used to support the user's feet and meet the user's comfort requirements.

[0052] The assembly portion 42 can assemble the second end of the support rod 411 with the mounting portion 11 of the sitting and lying device 100. Figure 2 and Figure 3 The footrest assembly 40 and the sitting and lying device 100 can be assembled as follows: the second end of the support rod 411 passes through the mounting hole 12, the assembly portion 42 is fixed to the second end of the support rod 411 and clamps the mounting portion 11 in the axial direction of the mounting hole 12, so that the position of the support rod 411 in the axial and radial directions of the mounting hole 12 is fixed, thereby realizing the assembly of the footrest assembly 40 and the sitting and lying device 100 together.

[0053] After the footrest assembly 40 is assembled on the sitting and lying device 100, the user can place his feet on the footrest 412 when using the sitting and lying device 100. In this way, the footrest 412 supports the user's feet, preventing the user's feet from being suspended in the air, and improving the user's comfort. Furthermore, especially in scenarios such as gynecological examinations and childbirth, the support of the user's feet by the footrest assembly 40 is conducive to the user maintaining the leg posture for a long time and coordinating the force, reducing the user's pain, thereby ensuring the smooth progress of gynecological examinations and childbirth. In addition, the support of the feet by the footrest 412 allows the user's legs to have a certain amount of space for movement, improves the flexibility of the legs, and facilitates the user to adopt a more comfortable posture for medical examinations or childbirth.

[0054] As can be seen from the foregoing, the footrest assembly 40 provided in the embodiment of this specification can be used with Figure 1 The mounting parts 11 in the sitting and lying device 100 are assembled together, that is, by reusing the mounting part 11 originally used to assemble the leg support assembly 30, the foot support assembly 40 can be assembled to the sitting and lying device 100. In this way, the purchaser (such as a hospital, clinic, etc.) can Figure 1In the case of the sitting and lying device 100 shown, one only needs to purchase the footrest assembly 40 and assemble the footrest assembly 40 to the existing sitting and lying device 100 to obtain a sitting and lying device with foot support function without having to purchase a new sitting and lying device, thereby saving purchase costs.

[0055] Furthermore, considering that the diameters of the mounting holes 12 of sitting and reclining devices 100 produced by different manufacturers vary, embodiments of the present disclosure can design the cross-sectional dimensions of the second end of the support rod 411 so that the footrest assembly 40 can be adapted to a variety of different sitting and reclining devices 100. For example, the cross-sectional dimensions of the mounting holes 12 corresponding to various sitting and reclining devices 100 available on the market can be collected, and the smallest cross-sectional dimension of the mounting hole 12 among the various sitting and reclining devices 100 can be denoted as d. In this case, embodiments of the present disclosure can design the cross-sectional dimensions of the second end of the support rod 411 to be smaller than d, that is, smaller than the smallest cross-sectional dimension of the mounting holes 12 among the various sitting and reclining devices 100. In this way, the second end of the support rod 411 can pass through the mounting hole 12 of any of the various sitting and reclining devices 100, thereby adapting the footrest assembly 40 to a variety of sitting and reclining devices.

[0056] It should be noted that in the embodiments of this specification, cross-sectional dimensions represent the size of the cross section. Depending on the cross-sectional shape, the cross-sectional dimensions can be represented by different physical quantities. For example, when the cross-sectional shape is circular, the cross-sectional dimensions can include radius, diameter, area, circumference, etc.

[0057] For any sitting and reclining device 100 among the multiple sitting and reclining devices 100, since the cross-sectional size of the second end of the support rod 411 is smaller than the cross-sectional size of the mounting hole 12 of the sitting and reclining device 100, after the second end of the support rod 411 passes through the mounting hole 12, the support rod 411 has freedom in both the axial and radial directions of the mounting hole 12. Figure 4 Shown Figure 2 and Figure 3 The schematic cross-sectional view of the mounting portion along the radial direction of the mounting through hole. Figure 4 As shown, assuming that the cross-sectional shape of the mounting hole 12 and the cross-sectional shape of the second end of the support rod 411 are both circular, the cross-sectional diameter d1 of the second end of the support rod 411 is smaller than the cross-sectional diameter d2 of the mounting hole 12. Therefore, the support rod 411 has freedom in both the axial and radial directions of the mounting hole 12.

[0058] In this case, by fixing the assembly portion 42 to the second end of the support rod 411 and clamping the mounting portion 11 in the axial direction of the mounting hole 12, the axial and radial degrees of freedom of the support rod 411 in the mounting hole 12 are restricted, so that the position of the support rod 411 in the axial and radial directions of the mounting hole 12 is fixed, thereby achieving the assembly of the footrest assembly 40 with any sitting or reclining device 100. Thus, by designing the cross-sectional dimension of the second end of the support rod 411 to be smaller than d, the embodiment of this specification allows the footrest assembly 40 to be adapted to a variety of different sitting or reclining devices 100, thereby increasing the applicability of the footrest assembly 40.

[0059] In the embodiments of this specification, the assembly portion 42 may include one or more assembly parts that assemble the second end of the support rod 411 with the mounting portion 11 of the sitting / reclining device 100. It should be noted that the assembly portion 42 can be implemented in a variety of ways, and this embodiment only uses a few possible implementations as examples. Those skilled in the art will appreciate that in addition to the possible implementations described below, the assembly portion 42 may also have other implementations, which are not specifically described in this embodiment.

[0060] In some embodiments, the assembly portion 42 may include a first assembly part 421 and a second assembly part 422. When the footrest assembly 40 is assembled to the sitting / reclining device 100, the first assembly part 421 is fixed on the support rod 411 at a first side of the mounting portion 11 and abuts against the surface of the first side of the mounting portion 11, and the second assembly part 422 is fixed on the support rod 411 at a second side of the mounting portion 11 and abuts against the surface of the second side of the mounting portion 11. The first side and the second side are respectively two sides of the mounting portion 11 along the axial direction of the mounting through hole 12.

[0061] Combine Figure 2 and Figure 3 As shown, the first assembly part 421 and the second assembly part 421 are both fixed to the second end of the support rod 411, wherein the first assembly part 421 can be located on the upper side of the mounting portion 11 and abut against the upper surface of the mounting portion 11, and the second assembly part 422 can be located on the lower side of the mounting portion 11 and abut against the lower surface of the mounting portion 11. Since the first assembly part 421 and the second assembly part 422 respectively abut against the upper and lower surfaces of the mounting portion 11, and both are fixed to the support rod 411, the first assembly part 421, the second assembly part 422 and the mounting portion 11 cooperate with each other, limiting the degree of freedom of the support rod 411 in the mounting through hole 12, so that the position of the support rod 411 in the axial and radial directions of the mounting through hole 12 is fixed.

[0062] In the embodiments of this specification, to ensure that the first assembly member 421 can abut against the upper surface of the mounting portion 11 of any of the various sitting / reclining devices 100, the shape and / or dimensions of the first assembly member 421 may be specially designed. For example, the outer contour shape and / or dimensions of the first assembly member 421 may satisfy the following condition: the cross-sectional dimension of the first assembly member 421 in the axial direction perpendicular to the mounting through-hole 12 is greater than the cross-sectional dimension of the largest mounting through-hole 12 in the various sitting / reclining devices 100.

[0063] For example, assuming the mounting hole 12 in the mounting portion 11 has a circular cross-section, and the largest mounting hole 12 in the various seating and reclining devices 100 has a diameter D, the outer contour of the cross section of the first assembly member 421 in a direction perpendicular to the axial direction of the mounting hole 12 can be circular, with the diameter of the circle greater than D. Alternatively, the outer contour of the cross section of the first assembly member 421 in a direction perpendicular to the axial direction of the mounting hole 12 can be elliptical, with the major axis of the ellipse greater than D, or with both the major and minor axes greater than D. Alternatively, the outer contour of the cross section of the first assembly member 421 in a direction perpendicular to the axial direction of the mounting hole 12 can be square, with the diagonal dimension of the square greater than D.

[0064] Those skilled in the art will understand that the above-mentioned implementation methods of the shape and / or size of the first assembly part 421 are only some possible examples. The first assembly part 421 can also adopt other design methods, as long as the first assembly part 421 can cover at least part of the edge of the mounting hole 12 when the second end of the support rod 411 is inserted into the largest mounting hole 12 in the various sitting and lying devices 100. The embodiments of this specification do not list them one by one.

[0065] In the embodiments of this specification, in order to enable the second assembly member 422 to abut against the lower surface of the mounting portion 11 in any of the various sitting and reclining devices 100, the shape and / or size of the second assembly member 422 may be specially designed. Those skilled in the art will appreciate that the shape and / or size of the second assembly member 422 are designed in a similar manner to those of the first assembly member 421, and detailed description thereof will not be given herein.

[0066] The first assembly part 421 and the second assembly part 422 are described above from the perspective of shape and / or size. The first assembly part 421 and the second assembly part 422 are described in more detail below from the perspective of the fixing method with the support rod 411.

[0067] In some embodiments, the first assembly part 421 can be a clamping fastening assembly part, that is, it is fixed to the second end of the support rod 411 by clamping and fastening. Figure 5 and Figure 6 Give an example.

[0068] Figure 5 FIG. 5 shows a schematic structural diagram of a clamping and fastening assembly 50. Figure 5 As shown, the clamping and fastening assembly 50 includes: a clamping component 51 and an adjusting component 52. The clamping component 51 is clamped at the second end of the support rod 411. Two locking plates 511 are formed at both ends of the clamping component 51. The two locking plates 511 are arranged opposite to each other and spaced apart by a preset distance. Locking through holes are respectively provided at the relative positions of the two locking plates 511. When the distance between the two locking plates 511 is compressed, the clamping force of the clamping component 51 on the support rod 411 increases; when the distance between the two locking plates 511 increases, the clamping force of the clamping component 51 on the support rod 411 decreases.

[0069] Continue to see Figure 5 The adjusting component 52 passes through the locking through-hole and is used to adjust the distance between the two locking plates 511. The adjusting component 52 may include a bolt 521 and a nut 522. The free end of the bolt 521 passes through the two locking through-holes 512, and the screw head of the bolt 521 abuts against one of the two locking plates 511. The nut 522 is threadedly connected to the free end of the bolt 521. When the nut 522 is tightened against the screw head of the bolt 521, the distance between the two locking plates 511 is compressed, thereby causing the clamping component 51 to clamp the support rod 411.

[0070] When using Figure 5 When the clamping and fastening assembly part 50 shown is used as the first assembly part 421, the user can tighten the nut 522 to make the clamping part 51 clamp the support rod 411, and loosen the nut 522 to make the clamping part 51 loosen the support rod 411, thereby improving the convenience of the assembly operation.

[0071] Figure 6 A schematic structural diagram of another clamping and fastening assembly 60 is shown. Figure 6 The clamping and fastening assembly 60 shown may include a clamping component 61 and an adjusting component 62. The clamping component 61 is clamped at the second end of the support rod 411. Two locking plates 611 are formed at both ends of the clamping component 61. The two locking plates 611 are arranged opposite to each other and spaced a preset distance apart. Locking through holes are respectively provided at the relative positions of the two locking plates 611. When the distance between the two locking plates 611 is compressed, the clamping force of the clamping component 61 on the support rod 411 increases; when the distance between the two locking plates 611 increases, the clamping force of the clamping component 61 on the support rod 411 decreases.

[0072] The adjusting component 62 passes through the locking through-hole and is used to adjust the distance between the two locking plates 611. The adjusting component 62 may include a connecting rod 623, a limiting block 624 and an adjusting handle 625. One end of the connecting rod 623 passes through the locking through-holes on the two locking plates 611, and the other end abuts against one of the two locking plates 611. The limiting block 624 is connected to the end of the connecting rod 623 passing through the locking through-hole and abuts against the other of the two locking plates 611. One end of the adjusting handle 625 is rotatably connected to the end of the connecting rod 623 passing through the two locking plates 611. The rotation axis is perpendicular to the central axis of the connecting rod 623. A cam structure 626 is provided between one end of the adjusting handle 625 and one end of the connecting rod 623 passing through the two locking plates 611. The surface of the cam structure 626 abuts against the limiting block 624. When the adjustment handle 625 is pulled in the first direction, the cam structure 626 pushes the limit block 624 to compress the distance between the two locking plates 611. When the adjustment handle 625 is pulled in the second direction, the cam structure 626 releases the limit block 624 to expand the distance between the two locking plates 611.

[0073] When using Figure 6 When the clamping and fastening assembly part 60 is used as the first assembly part 421, the user can pull the adjustment handle 625 in a first direction to make the clamping part 61 clamp the support rod 411, and pull the adjustment handle 625 in a second direction to make the clamping part 61 loosen the support rod 411. As can be seen, the user can conveniently fix the assembly part 60 to the support rod 411 or loosen the support rod 411 without the need for external tools, further improving the convenience of the assembly operation.

[0074] In some embodiments, the first assembly part 421 can also be fastened with a top screw, that is, it is fixed to the second end of the support member 411 by a top screw fastening method. Figure 7 Give an example.

[0075] Figure 7 FIG. 1 shows a schematic structural diagram of a top screw fastening assembly 70. Figure 7 As shown, the jackscrew fastening assembly 70 may include a sleeve 71 and a bolt 72. Sleeve 71 is sleeved onto the second end of support rod 411, and a bolt hole 711 is defined on the side of sleeve 71. Bolt 72 matches bolt hole 711. When bolt 72 is screwed into bolt hole 711 and abuts against the side surface of support rod 411, sleeve 71 is secured to the second end of support rod 411. In this arrangement, the user secures sleeve 71 to the second end of support rod 411 by tightening bolt 72, improving assembly convenience.

[0076] Continue to see Figure 7In some embodiments, the operating end of the bolt 72 may be provided with a knob 721. The shape of the knob 721 is suitable for manual rotation. For example, the outer diameter of the knob 721 matches the width of the palm, so as to be suitable for hand gripping and twisting. In this way, the user can conveniently twist the bolt 72 by operating the knob 721, thereby improving the convenience of the assembly operation. In addition, in some embodiments, the operating end of the bolt 72 may be provided with an operating lever ( Figure 7 (not shown), the operating rod is perpendicular to the length direction of the bolt 72, and the length of the operating rod is greater than or equal to a predetermined length, so that the operating rod is suitable for manual operation. In this way, the user can conveniently tighten the bolt 72 by pulling the operating rod, thereby improving the convenience of the assembly operation.

[0077] In some embodiments, the first assembly part 421 can also be a threaded fastening assembly part, that is, it is fixed to the second end of the support rod 411 by threaded fastening. Figure 8 Give an example.

[0078] Figure 8 FIG. 8 is a schematic structural diagram of a threaded fastening assembly 80. Figure 8 As shown, at least a portion of the surface of the second end of the support rod 411 may be provided with threads. The threaded fastening assembly 80 may include a nut that matches the threads, and the nut is fixed to the second end of the support rod 411 via the threads. In this manner, the user can tighten the nut to secure it to the second end of the support rod 411, improving the convenience of the assembly operation.

[0079] In some embodiments, the nut can be a butterfly nut, which is convenient for the user to manually screw, thereby further improving the convenience of the assembly operation. Alternatively, in some embodiments, the periphery of the nut can be covered with a knob sleeve suitable for manual screwing, thereby further improving the convenience of the assembly operation.

[0080] The above describes an example of how the first assembly part 421 and the support rod 411 are fixed. It should be noted that in addition to the three fixing methods of clamping, screw fastening, and threaded fastening, other similar fixing methods can be used between the first assembly part 421 and the support rod 411, which are not listed one by one in this specification.

[0081] Those skilled in the art will understand that the way in which the second assembly part 422 is fixed to the support rod 411 is similar to the way in which the first assembly part 421 is fixed to the support rod 411, that is, the second assembly part 422 can also be fixed to the second end of the support rod 411 by clamping fastening, screw fastening, threaded fastening or other fastening methods as described above, and this specification does not elaborate on this.

[0082] Furthermore, the way the first assembly part 421 is fixed to the support rod 411 and the way the second assembly part 422 is fixed to the support rod 411 can be the same or different. For example:

[0083] In some embodiments, the first assembly part 421 and the second assembly part 422 can be fastened by clamping (eg Figure 5 or Figure 6 as shown) is fixed to the second end of the support rod 411.

[0084] In some embodiments, the first assembly member 421 can be clamped and fastened (eg Figure 5 or Figure 6 As shown) is fixed to the second end of the support rod 411, and the second assembly part 422 can be fastened by a top screw (as shown) Figure 7 as shown) is fixed to the second end of the support rod 411.

[0085] In some embodiments, the first assembly member 421 can be clamped and fastened (eg Figure 5 or Figure 6 ) is fixed to the second end of the support rod 411, and the second assembly part 422 can be fastened by thread (as shown Figure 8 as shown) is fixed to the second end of the support rod 411.

[0086] In some embodiments, the first assembly member 421 can be fastened by a top screw (eg Figure 7 As shown) is fixed to the second end of the support rod, and the second assembly part 422 can be clamped and fastened (as shown) Figure 5 or Figure 6 as shown) is fixed to the second end of the support rod 411.

[0087] In some embodiments, the first assembly part 421 and the second assembly part 422 can be fastened by means of top screws (eg Figure 7 as shown) is fixed to the second end of the support rod 411.

[0088] In some embodiments, the first assembly member 421 can be fastened by a top screw (eg Figure 7 As shown) is fixed to the second end of the support rod, and the second assembly part 422 can be fastened by thread (as shown) Figure 8 as shown) is fixed to the second end of the support rod 411.

[0089] In some embodiments, the first assembly part 421 can be fastened by screw thread (eg Figure 8 As shown) is fixed to the second end of the support rod 411, and the second assembly part 422 can be clamped and fastened (as shown) Figure 5 or Figure 6 ) is fixed to the second end of the support rod.

[0090] In some embodiments, the first assembly part 421 can be fastened by screw thread (eg Figure 8 As shown) is fixed to the second end of the support rod 411, and the second assembly part 422 can be fastened by a top screw (as shown) Figure 7 ) is fixed to the second end of the support rod.

[0091] In some embodiments, the first assembly part 421 and the second assembly part 422 can be fastened by screw threads (eg Figure 8 as shown) is fixed to the second end of the support rod 411.

[0092] Next, the first assembly part 421 is clamped and fastened (eg Figure 5 or Figure 6 As shown) is fixed to the second end of the support rod 411, and the first assembly part 422 is fastened by a thread (as shown Figure 8 Taking the second end of the footrest assembly 40 fixed to the support rod 411 as an example, the assembly process of the footrest assembly 40 is described in detail.

[0093] (1) The first assembly part 421 (such as Figure 5 or Figure 6 The clamping and fastening assembly shown) is clamped and fastened to the second end of the support rod 411.

[0094] (2) Insert the second end of the support rod 411 through the mounting hole 12 and move it downward. Due to the shape and / or size of the first assembly part 421, after the second end of the support rod 411 descends to a certain position, the mounting portion 11 will limit the downward movement of the support rod 411. At this time, the first assembly part 421 abuts against the upper surface of the mounting portion 11.

[0095] (3) Assemble the second assembly part 422 (such as Figure 8 Due to the shape and / or size of the second assembly member 422, when the second assembly member 422 moves upward along the thread of the support rod 411, it will abut against the lower surface of the mounting portion 11, so that the first assembly member 421 and the second assembly member 422 clamp the mounting portion 11 in the axial direction of the mounting through hole, thereby fixing the position of the support rod 411 in the axial and radial directions of the mounting through hole 12.

[0096] After the above assembly steps (1) to (3), the footrest assembly 40 is assembled with the mounting portion 11 of the sitting and reclining device 100. When the user uses the sitting and reclining device 100, the height of the footrest 412 and the distance between the two footrests 412 (corresponding to the angle of the user's legs) can be adjusted according to the user's height, habitual sitting and reclining posture, etc.

[0097] To adjust the distance between the two foot supports 412, first loosen the second assembly 422 to allow the support rod 411 to rotate about the axis of the mounting hole 12. Then, rotate the two support rods 411 separately. After adjusting the distance between the two foot supports 412 to the desired distance, tighten the second assembly 422. To adjust the height of the foot supports 412, first loosen the first and second assembly 421, 422 to allow the support rod 411 to move axially along the mounting hole 12. Once the height is reached, tighten the first and second assembly 421, 422.

[0098] As can be seen from the above, the footrest assembly 40 provided in the embodiment of this specification can conveniently adjust the assembly height and assembly angle of the footrest assembly 40 in the sitting and lying device 100, thereby meeting the special needs of different groups of people.

[0099] In the embodiments of this specification, support rod 411 can be a metal rod, such as an iron pipe or steel pipe. This provides greater strength and provides a more secure support for footrest 412. In some embodiments, support rod 411 can be a solid rod to further enhance support stability. In other embodiments, support rod 411 can be a hollow rod to reduce the overall weight of footrest assembly 40, thereby facilitating assembly.

[0100] In some embodiments, the support rod 411 may have a preset curvature. Figure 2 and Figure 3 As shown, the curvature of the support rod 411 can be adapted to the curvature of the legs of the user when using the sitting and lying device 100. In this way, the support rod 411 and the foot support member 412 can provide a more stable supporting effect on the user's feet.

[0101] Figure 9 FIG. 1 shows a schematic structural diagram of a foot support. Figure 9 As shown, in some embodiments, the surface of the foot support 412 that contacts the foot may be provided with a plurality of protrusions 4121. It should be noted that the embodiments of this specification do not limit the shape of the protrusions, for example, the shape of the protrusions may be circular, oval, rounded rectangular, etc. Figure 9 A circular protrusion is used as an example for illustration.

[0102] The multiple protrusions 4121 can provide an anti-slip function, thereby preventing the user's feet from sliding on the footrest 412. During gynecological examinations, childbirth, and other scenarios, the user may experience pain and need to exert force, at which point the user's feet may easily slip on the footrest 412. Therefore, the embodiments of this specification provide multiple protrusions on the footrest 412 to prevent the user's feet from slipping, allowing the footrest 412 to effectively support the foot and improve the user's comfort when sitting or lying down. In addition, the multiple protrusions can also massage the foot, further improving the user's comfort.

[0103] In some embodiments, see Figure 9 The surface of the foot support 412 may be formed with a foot contact area 4122 and a non-foot contact area 4123. The foot contact area 4122 is recessed inward relative to the non-foot contact area 4123. In other words, the foot contact area 4122 is an inwardly recessed area on the surface of the foot support 412. The foot contact area 4122 is shaped similar to the sole of the foot, and a plurality of protrusions 4121 are formed in the foot contact area 4122. Because the foot contact area 4122 is shaped like the sole of the foot, it can intuitively guide the user to place their foot in this area, preventing the user from adopting an incorrect leg posture. In addition, because the foot contact area 4122 is recessed relative to the surrounding area, it can prevent the user's foot from sliding out of the foot contact area 4122, helping the user maintain a correct leg posture for a long time.

[0104] The embodiments of this specification do not limit the connection method between the footrest member 412 and the first end of the support rod 411. In some embodiments, the footrest member 412 can be integrally formed with the first end of the support rod 411. In this way, the overall stability of the footrest assembly 40 is higher. In other embodiments, the footrest member 412 can be detachably connected to the first end of the support rod 411. In this way, on the one hand, the storage and transportation of the footrest assembly 40 are more convenient, and on the other hand, the assembly method between the footrest member 412 and the support rod 411 is more flexible.

[0105] Furthermore, when the foot support 412 is detachably connected to the first end of the support rod 411, the installation angle between the foot support 412 and the support rod 411 is adjustable and relatively fixed. Figure 10 Give an example.

[0106] Figure 10 A schematic diagram showing a connection method between the foot support and the support rod is shown. Figure 10As shown, the first end of the support rod 411 is provided with a first mounting platform 413, and the first mounting platform 413 is provided with first mounting holes 414a and 414b. The foot support member 412 is provided with a second mounting platform 415, and the second mounting platform 415 is provided with second mounting holes 416a and 416b that match the first mounting hole 414. Among them, at least one of the first mounting hole 414 and the second mounting hole 416 is an adjustable mounting hole. For example, see Figure 10 , the first mounting holes 414a and 414b can be circular holes, and the second mounting holes 416a and 416b can be arc-shaped holes, and the diameter of the circular holes is equal to the width of the arc-shaped holes. The first mounting hole 414a and the second mounting hole 416a can be connected by bolts, and the first mounting hole 414b and the second mounting hole 416b brackets can be connected by bolts, so as to realize the connection between the foot support member 412 and the first end of the support rod 411. Since the second mounting holes 416a and 416b are arc-shaped holes, the position of the bolt passing through the arc-shaped hole is adjustable, so that the installation angle between the first end of the support rod 411 and the foot support member 412 is adjustable. After adjusting to the appropriate installation angle, the bolts can be tightened by fasteners, and the installation angle between the first end of the support rod 411 and the foot support member 412 is fixed.

[0107] Those skilled in the art will appreciate that the first mounting platform 413 and the second mounting platform 415 may be of any shape, such as circular, rectangular, trapezoidal, etc. Figure 10 The circle is used as an example. Figure 10 The shapes of the first mounting holes 414a and 414b and the second mounting holes 416a and 416b shown in the figure are merely examples. Other shapes of first and second mounting holes may also be employed in the embodiments of this specification. For example, the first mounting platform 413 may have multiple first mounting holes spaced evenly along the circumference, and the second mounting platform 415 may have multiple second mounting holes spaced evenly along the circumference, with the first and second mounting holes matching in size. When bolts are inserted through different first and second mounting holes, different mounting angles may be formed between the foot support 412 and the first end of the support rod 411.

[0108] When users use a sitting or lying device, especially in scenarios such as gynecological examinations and childbirth, different users often have different sitting or lying postures. Therefore, the embodiment of this specification makes the installation angle between the footrest 412 and the support rod 411 adjustable, making the use of the footrest assembly 40 more flexible and able to adapt to different users' sitting or lying postures, meeting different users' sitting or lying needs.

[0109] In summary, the embodiments of the present specification provide a footrest assembly and a sitting and lying device, the footrest assembly includes a support portion and an assembly portion, the support portion includes a support rod and a footrest member, the footrest member is arranged at the first end of the support rod, and supports the user's foot during operation, when the footrest assembly is connected to the sitting and lying device, the assembly portion assembles the second end of the support rod with the mounting portion of the sitting and lying device, wherein the mounting portion is provided with a mounting through hole, the cross-sectional dimension of the second end of the support rod is smaller than d, and d is the smallest cross-sectional dimension of the mounting through hole in a variety of sitting and lying devices, when the footrest assembly is assembled to any of the various sitting and lying devices, the second end of the support rod passes through the mounting through hole, the assembly portion is fixed to the second end of the support rod and clamps the mounting portion in the axial direction of the mounting through hole to fix the position of the support rod in the axial and radial directions of the mounting through hole. It can be seen that the footrest assembly provided in the embodiments of this specification can be assembled on a variety of sitting and lying devices to support the user's feet and improve the user's sitting and lying comfort; especially in scenarios such as gynecological examinations and childbirth, the footrest assembly helps the user maintain leg posture and cooperate with the force, thereby ensuring the smooth progress of gynecological examinations and childbirth. In addition, because the footrest assembly can be assembled on an existing sitting and lying device by reusing the mounting portion of the existing sitting and lying device, the purchaser only needs to purchase the footrest assembly and assemble the footrest assembly on the existing sitting and lying device to obtain a sitting and lying device with foot support function, without having to purchase a new sitting and lying device, thereby saving purchase costs.

[0110] After reading this detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure may be presented by way of example only and may not be limiting. Although not expressly stated herein, those skilled in the art will understand that this specification encompasses various reasonable changes, improvements, and modifications to the embodiments. Such changes, improvements, and modifications are intended to be suggested by this specification and are within the spirit and scope of the exemplary embodiments of this specification.

[0111] Furthermore, certain terms in this specification have been used to describe embodiments of this specification. For example, “one embodiment,” “an embodiment,” and / or “some embodiments” mean that a particular feature, structure, or characteristic described in connection with that embodiment may be included in at least one embodiment of this specification. Therefore, it is emphasized and should be understood that two or more references to “an embodiment,” “one embodiment,” or “an alternative embodiment” in various parts of this specification do not necessarily refer to the same embodiment. Furthermore, particular features, structures, or characteristics may be appropriately combined in one or more embodiments of this specification.

[0112] It should be understood that in the foregoing descriptions of the embodiments of this specification, to facilitate understanding of a feature and to simplify this specification, various features are combined in a single embodiment, figure, or description thereof. However, this does not necessarily mean that these features are combined. When reading this specification, a person skilled in the art may label some of the devices as separate embodiments. In other words, the embodiments of this specification can also be understood as the integration of multiple sub-embodiments. The content of each sub-embodiment is also valid even when it includes fewer than all the features of a single previously disclosed embodiment.

[0113] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, documents, articles, and the like, cited herein, except to the extent that it is inconsistent or conflicting with this document or that it has a limiting effect on the broadest scope of the claims, is hereby incorporated by reference for all purposes now or hereafter connected with this document. In addition, in the event of any inconsistency or conflict between the description, definition, and / or use of a term in any material and the description, definition, and / or use of a term in this document, the term in this document shall control.

[0114] Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of this specification. Other modified embodiments are also within the scope of this specification. Therefore, the embodiments disclosed in this specification are merely examples and not limitations. Those skilled in the art can adopt alternative configurations based on the embodiments in this specification to implement the application in this specification. Therefore, the embodiments of this specification are not limited to the embodiments precisely described in the application.

Claims

1. A footrest assembly for a sitting or lying device, characterized in that: include: The support part includes: a support rod having a first end and a second end, and The foot support is provided at the first end of the support rod and supports the user's feet during operation. The surface of the foot support member in contact with the foot is provided with a plurality of protrusions; and An assembly portion, which assembles the second end of the support rod with the mounting portion of the sitting and lying device when the footrest assembly is connected to the sitting and lying device, wherein: The mounting portion is provided with a mounting through hole, and the cross-sectional dimension of the second end of the support rod is smaller than d. Said d is the smallest cross-sectional dimension of the mounting through hole in a variety of sitting and lying devices, When the footrest assembly is assembled on any of the multiple sitting and lying devices, the second end of the support rod passes through the mounting through hole, the assembly portion is fixed to the second end of the support rod and clamps the mounting portion in the axial direction of the mounting through hole to fix the position of the support rod in the axial and radial directions of the mounting through hole. The assembly portion includes a first assembly part, wherein the fixed position of the first assembly part on the support rod is located on a first side of the mounting portion in the axial direction of the mounting through hole and abuts against a surface of the first side of the mounting portion, and the first assembly part includes: A clamping member clamped at the second end of the support rod, two locking plates formed at both ends of the clamping member, the two locking plates being arranged opposite to each other and spaced a preset distance apart, and locking through holes being respectively provided at the relative positions of the two locking plates, and An adjusting component passes through the locking through hole and is used to adjust the distance between the two locking plates, wherein the clamping force of the clamping component on the support rod increases when the distance between the two locking plates is compressed, and the clamping force of the clamping component on the support rod decreases when the distance between the two locking plates is expanded.

2. The footrest assembly according to claim 1, wherein: The adjusting component comprises: a connecting rod, one end of which passes through the locking through hole and the other end of which abuts against one of the two locking pieces; a limiting block connected to one end of the connecting rod passing through the locking through hole and abutting against the other of the two locking pieces; and The adjusting handle has one end rotatably connected to one end of the connecting rod passing through the locking through hole, and is provided with a cam structure, the surface of the cam structure abuts against the limit block, wherein When the adjustment handle is pulled in a first direction, the cam structure compresses the distance between the two locking plates. When the adjustment handle is pulled in the second direction, the cam structure expands the distance between the two locking plates.

3. The footrest assembly according to claim 1, wherein: The assembly portion further includes a second assembly part, the fixing position of the second assembly part on the support rod is located on the second side of the mounting portion in the axial direction of the mounting through hole and abuts against the surface of the second side of the mounting portion.

4. The footrest assembly according to claim 3, wherein: At least a portion of the outer surface of the second end of the support rod is provided with threads, and The second assembly part includes a nut threadedly connected to the second end of the support rod.

5. The footrest assembly according to claim 4, wherein: The nut is a butterfly nut; or The periphery of the nut is covered with a knob sleeve suitable for manual screwing.

6. The footrest assembly according to claim 3, wherein: The second assembly includes: a shaft sleeve, sleeved on the second end of the support rod, with a bolt hole formed on a side surface of the shaft sleeve; and A bolt matches the bolt hole. When the bolt is screwed into the bolt hole and abuts against the side surface of the support rod, the sleeve is fixed to the second end of the support rod.

7. The footrest assembly according to claim 6, wherein: The operating end of the bolt is provided with an operating rod, the operating rod is perpendicular to the length direction of the bolt, and the length of the operating rod is greater than or equal to a preset length, so that the operating rod is suitable for being pulled by hand; or The operating end of the bolt is provided with a knob suitable for manual rotation.

8. The footrest assembly according to claim 1, wherein: The support rod has a preset curvature, which is adapted to the curvature of the legs of the user when using the sitting and lying device.

9. The footrest assembly according to claim 1, wherein: A portion of the surface of the foot support member that contacts the foot is inwardly recessed to form a foot contact area, and the foot contact area is in the shape of a foot sole; as well as The plurality of protrusions are formed in the foot contact area.

10. The footrest assembly according to claim 1, wherein: The foot support is integrally formed at the first end of the support rod.

11. The footrest assembly according to claim 1, wherein: The foot support is detachably connected to the first end of the support rod.

12. The footrest assembly according to claim 11, wherein: The installation angle of the foot support relative to the first end is adjustable and can be relatively fixed.

13. The footrest assembly according to claim 12, wherein: The first end of the support rod is provided with a first mounting platform, and the first mounting platform is provided with a first mounting hole. The foot support is provided with a second mounting platform, and the second mounting platform is provided with a second mounting hole matching the first mounting hole. The first end of the support rod and the foot support are fixed through the first mounting hole and the second mounting hole, wherein at least one of the first mounting hole and the second mounting hole is an adjustable mounting hole, so that the mounting angle between the first end of the support rod and the foot support is adjustable.

14. A sitting and lying device, characterized in that: include: The bracket is provided with a mounting portion, wherein the mounting portion is provided with a mounting through hole; A sitting or lying portion is provided on the support for a user to sit or lie down; as well as The footrest assembly according to any one of claims 1 to 13 is detachably connected to the mounting portion to support the user's foot during operation.

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