Bed

Abstract

A bed according to an aspect of the present invention comprises: a bed frame including a main frame and a sub-frame provided to be relatively movable with respect to the main frame; a main link rotatably connected to the main frame and the sub-frame; and a damper which is extended or contracted by the rotation of the main link to reduce the moving speed of the sub-frame when the sub-frame is moved down, wherein the sub-frame may be arranged, by the rotation of the main link, in a first state in which the central portion thereof is disposed above the main frame to overlap the main frame or in a second state in which the central portion thereof is disposed further forward than the first state, and the damper is contracted when the sub-frame is in the first state and is extended when the sub-frame is in the second state, or is contracted when the sub-frame is in the second state and is extended when the sub-frame is in the first state.

Description

bed

[0001] The present invention relates to a bed.

[0002] Typically, beds can be provided as standard beds on which the user can lie down, or as folding beds that can be converted to fold. Folding beds can be moved by rotating the leg rests that support the user's legs forward and backward, or by sliding them forward and backward.

[0003] Meanwhile, massage devices provide physical stimulation or pressure to the entire body or specific areas, promoting blood circulation and facilitating metabolism. Furthermore, massage devices apply pressure to muscles, relieving tension and thus relieving physical and mental fatigue, and contributing to fatigue recovery, disease prevention, and beauty. Massage beds, which incorporate massage devices, may also be available. These beds can massage the user's body while lying down or sitting.

[0004] In this regard, applicant Jeong Chan-in's Korean Patent Publication No. 10-2003-0087599, "Multifunctional bed with massage device" (Patent Document 1), discloses a bed equipped with a massage device so that a user can receive a massage function while lying down.

[0005] However, the multifunctional bed with a massage device of Patent Document 1 is composed of a single frame, so the bed must always be unfolded. In other words, the multifunctional bed of Patent Document 1 remains unfolded not only when the user is using the massage device, but also when the massage device is not in use. This presents a problem: the multifunctional bed is always unfolded, even when the user is not using the massage device, thus taking up a lot of space.

[0006] Korean Patent Publication No. 10-1206967 "Sliding type thermal therapy device" (Patent Document 2) of the applicant, Seragem Co., Ltd., discloses a thermal therapy device that provides a treatment function to a user and a lower bed member that can slide relative to the body to cover the thermal therapy device.

[0007] However, in the thermal therapy device of Patent Document 2, friction occurs as the lower bed member moves because the lower bed member slides horizontally along a guide groove formed in the body. In other words, there is a problem in that friction occurs between the lower bed member and the body while the lower bed member slides, which may damage the lower bed member.

[0008] One embodiment of the present invention aims to provide a bed capable of reducing damage to a subframe when the subframe constituting the bedframe moves relative to the main frame.

[0009] According to one aspect of the present invention, a bed includes a bed frame including a main frame and a subframe provided to be relatively movable with respect to the main frame; a main link rotatably connected to the main frame and the subframe; and a damper that extends or contracts by rotation of the main link so as to reduce a moving speed of the subframe when the subframe is moved and lowered, wherein the subframe can be placed in a first state in which a center portion is disposed above the main frame so as to overlap the main frame, or in a second state in which the center portion is disposed further forward than the first state, by rotation of the main link, and the damper contracts when the subframe is placed in the first state and extends when the subframe is placed in the second state, or contracts when the subframe is placed in the second state and extends when the subframe is placed in the first state.

[0010] In addition, the damper is composed of a plurality of dampers, and includes a first damper supported on the main frame so as to be compressed by the main link when the subframe is placed in the first state; and a second damper supported on the main frame in front of the first damper so as to be compressed by the main link when the subframe is placed in the second state, wherein the first damper can be extended when the pressurization of the main link is released when the subframe is rotated from the first state toward the second state, and the second damper can be extended when the pressurization of the main link is released when the subframe is rotated from the second state toward the first state.

[0011] Additionally, the damper may include a first damper supported on the main frame and extending toward the front upper side of the main frame.

[0012] Additionally, the damper may include a second damper supported on the main frame and extending toward the rear upper side of the main frame.

[0013] In addition, the main link includes a first main link end rotatably connected to the main frame and a second main link end rotatably connected to the subframe, and when the subframe rotates, the first main link end rotates around the first main link end, and the first main link end can be positioned between the first damper and the second damper.

[0014] Additionally, a bracket supported on the main frame and pressurizing the damper may be further included.

[0015] In addition, the damper may be formed in a plurality of pieces, and the plurality of dampers may include a first damper supported on the main link so as to extend in a direction perpendicular to the direction in which the main link extends; and a second damper supported on the main link so as to extend in a direction perpendicular to the direction in which the main link extends, but extending in a direction opposite to the first damper.

[0016] In addition, the bracket is formed in a plurality of pieces, and the main link includes a first main link end rotatably connected to the main frame and a second main link end rotatably connected to the subframe, and when the subframe rotates, it rotates around the first main link end, and the first main link end can be positioned between the plurality of brackets.

[0017] In addition, the plurality of brackets may include a first bracket having a contact surface formed to contact the first damper when the subframe is in the first state; and a second bracket disposed forward of the first bracket and having a contact surface formed to contact the second damper when the subframe is in the second state, wherein the contact surface of the first bracket may be disposed to be inclined downwardly in the forward direction, and the contact surface of the second bracket may be disposed to be inclined upwardly in the forward direction.

[0018] In addition, the device may further include an elastic member that is coupled to the main link at one end and to the main frame at the other end to apply elastic force to the main link.

[0019] In addition, the main link may include a lower main link portion rotatably connected to the main frame; an upper main link portion rotatably connected to the subframe; and a main link bending portion connected between the lower main link portion and the upper main link portion so that the lower main link portion and the upper main link portion are misaligned with each other, and having a curved shape, and disposed on an upper portion of the main frame when the subframe is in a second state and disposed on an upper portion of the main frame when the subframe is in a first state.

[0020] In addition, the lower main link portion may be arranged so that the upper side thereof is inclined forward so as to form a first angle with respect to a virtual line extending in a vertical direction when the subframe is placed in the second state, and the upper main link portion may be arranged so that the upper side thereof is inclined forward so as to form a second angle smaller than the first angle with respect to the virtual line when the subframe is placed in the second state.

[0021] According to one aspect of the present invention, when the subframe moves, the shock applied to the subframe can be reduced because the moving speed of the subframe can be reduced by the damper by extending or contracting due to the rotation of the main link.

[0022] Additionally, the damper can be extended when the subframe is raised, so that the subframe can be easily moved from the first state or the second state.

[0023] In addition, since the elastic member is supported by the main link and the main frame and can apply elastic force to the main link, the moving speed of the subframe can be reduced when the subframe is lowered.

[0024] Additionally, since any one of the plurality of dampers can be pressurized when the subframe is in the first state or the second state by the plurality of brackets, the rotational speed of the main link can be reduced.

[0025] Additionally, since the contact surfaces of each of the plurality of brackets can be formed to be inclined, the plurality of dampers can be pressurized even when supported on the main link and rotated together with the main link.

[0026] FIG. 1 is a perspective view showing a subframe of a bed according to a first embodiment of the present invention in a first state.

[0027] Figure 2 is a side view of the bed of Figure 1.

[0028] FIG. 3 is a perspective view showing a subframe of a bed according to a first embodiment of the present invention rotated so that the subframe faces the first state or the second state.

[0029] Figure 4 is a side view of the bed of Figure 3.

[0030] FIG. 5 is a perspective view showing the subframe of the bed according to the first embodiment of the present invention in a second state.

[0031] Figure 6 is a side view of the bed of Figure 5.

[0032] Fig. 7 is a side view showing the subframe of the bed according to the second embodiment of the present invention in the first state.

[0033] FIG. 8 is a side view showing the subframe of the bed according to the second embodiment of the present invention rotated so that the subframe faces the first state or the second state.

[0034] Fig. 9 is a side view showing the subframe of the bed according to the second embodiment of the present invention in a second state.

[0035] Hereinafter, specific embodiments for implementing the technical idea of ​​the present invention will be described in detail with reference to the drawings.

[0036] In addition, when explaining the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0037] Additionally, when it is said that a component is 'connected' or 'flows' to another component, it should be understood that it may be directly connected or flowed to that other component, but there may also be other components in between.

[0038] The terminology used herein is intended solely to describe specific embodiments and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

[0039] Additionally, please note that the terms "upper side," "lower side," and "side" in this specification are based on the illustrations in the drawings and may be expressed differently if the orientation of the subject changes. For the same reason, some components in the attached drawings are exaggerated, omitted, or schematically depicted, and the sizes of each component do not fully reflect the actual size.

[0040] Additionally, terms that include ordinal numbers, such as "first," "second," etc., may be used to describe various components, but these components are not limited by such terms. These terms are used solely to distinguish one component from another.

[0041] The term "comprising" as used in the specification means specifying a particular characteristic, region, integer, step, operation, element and / or component, but does not exclude the presence or addition of other particular characteristics, regions, integers, steps, operations, elements, components and / or groups.

[0042] Hereinafter, a bed (1) according to the first embodiment of the present invention will be described.

[0043] Referring to FIGS. 1 to 6, a bed (1) according to a first embodiment of the present invention may be provided as a folding bed that can be converted to be folded. Such a bed (1) may include a main body (100), a bed frame (200), a main link (300), a sub link (400), an elastic member (500), and a damper (600).

[0044] The main body (100) can support a bed frame (200). The main body (100) can include an upper mattress on which the user's upper body can lie and a lower mattress on which the user's legs can be placed. A massage module that can massage the user by applying pressure to a body part of the user can be placed on the main body (100).

[0045] The bed frame (200) can support the upper and lower mattresses of the main body (100). In addition, the bed frame (200) can support a massage module. In addition, the bed frame (200) can include a main frame (210) and a subframe (220).

[0046] The main frame (210) can support the upper mattress of the main body (100) that can support the user's upper body. The main frame (210) can be connected to the subframe (220) via the main link (300) and the sub link (400). The first main link end (300a) of the main link (300) and the first sub link end (400a) of the sub link (400) can be rotatably connected to the lower part of the main frame (210).

[0047] The subframe (220) may be provided to be relatively movable with respect to the mainframe (210). For example, when the subframe (220) is moved by the rotation of the main link (300) and the sublink (400), the subframe (220) may be placed in a first state or a second state. The first state may be a state in which the center of the subframe (220) is positioned above the mainframe (210) so as to overlap with the mainframe (210). The second state may be a state in which the center of the subframe (220) is positioned further forward than in the first state. These first and second states may be referred to as an overlapping state and an extended state, respectively.

[0048] Referring back to FIGS. 3 to 6, the main link (300) can be movably connected to the subframe (220) relative to the mainframe (210). The main link (300) can be rotatably connected to the mainframe (210) and the subframe (220). In other words, the first main link end (300a) of the main link (300) can be rotatably connected to the mainframe (210), and the second main link end (300b) of the main link (300) can be rotatably connected to the subframe (220). The main link (300) can be rotated about the first main link end (300a) when the subframe (220) is rotated. The main link (300) can be bent to form a predetermined angle that is greater than a right angle and less than a flat angle. A main link (300) may be provided in multiple pieces, and the multiple main links (300) may be arranged on the left and right sides of the main frame (210). The main link (300) may include a lower main link portion (310), an upper main link portion (320), and a main link bending portion (330).

[0049] The lower main link part (310) can be rotatably connected to the main frame (210). An end of the lower main link part (310) can be a first main link end part (300a) rotatably connected to the main frame (210). The lower main link part (310) can extend in a different direction from the upper main link part (320). The lower main link part (310) can have a longer length than the upper main link part (320), the lower sub-link part (410) to be described later, and the upper sub-link part (420) to be described later. The lower sub-link part (410) can be connected to the upper sub-link part (420) so as to form a predetermined angle with each other. For example, the lower main link portion (310) may be arranged with its upper side tilted forward so as to form a predetermined first angle with a virtual line extending in the vertical direction when the subframe (220) is placed in the second state.

[0050] The upper main link part (320) may be rotatably connected to the subframe (220). An end of the upper main link part (320) may be a second main link end part (300b) rotatably connected to the subframe (220). The upper main link part (320) may extend in a different direction from the lower main link part (310). The upper main link part (320) may be connected to the lower main link part (310) to form a predetermined angle that is greater than a right angle and less than a flat angle. The upper main link part (320) may be arranged so that its upper side is inclined forward so as to form a second angle that is smaller than a first angle with respect to an imaginary line when the subframe (220) is placed in a second state.

[0051] The main link bending part (330) can connect the lower main link part (310) and the upper main link part (320). The main link bending part (330) can have a curved shape. The main link bending part (330) can be bent and connected between the lower main link part (310) and the upper main link part (320) so that the lower main link part (310) and the upper main link part (320) are arranged to be misaligned with each other. When the subframe (220) is placed in the second state, the main link bending part (330) can be arranged on the upper part of the main frame (210), and when the subframe (220) is placed in the first state, the main link bending part (330) can be arranged on the upper part of the main frame (210). In the drawing according to the present embodiment, the main link bending portion (330) is illustrated, but the main link bending portion (330) may be omitted. In other words, the lower main link portion (310) and the upper main link portion (320) may be directly connected to form a corner.

[0052] The sub-link (400) can movably connect the sub-frame (220) to the main frame (210). In addition, the sub-link (400) can be rotatably connected to the main frame (210) and the sub-frame (220) so as to be positioned forward of the main link (300). The first sub-link end (400a) of the sub-link (400) can be rotatably connected to the main frame (210), and the second sub-link end (400b) of the sub-link (400) can be rotatably connected to the sub-frame (220). The sub-link (400) can be rotated about the first sub-link end (400a) when the sub-frame (220) is rotated. The bent portion of the sub-link (400) can be formed to form a predetermined angle that is greater than a right angle and less than a flat angle. A plurality of sub-links (400) may be provided, and the plurality of sub-links (400) may be arranged on the left and right sides of the main frame (210). The sub-link (400) may include a lower sub-link portion (410), a sub-link bending portion (430), and an upper sub-link portion (420).

[0053] The lower sub-link unit (410) can be rotatably connected to the main frame (210). The lower sub-link unit (410) can extend in a different direction from the upper sub-link unit (420). The lower sub-link unit (410) can be connected to the upper sub-link unit (420) to form a predetermined angle with respect to each other. For example, the lower sub-link unit (410) can be connected to the upper sub-link unit (420) in the forward-rear direction through the sub-link bending unit (430) so that the angle formed with the upper sub-link unit (420) is less than a parallel angle and greater than a right angle. The lower sub-link unit (410) can extend forward when the sub-frame (220) is placed in the second state. The lower sub-link portion (410) may be arranged with its upper side tilted forward so as to form a third angle smaller than the first and second angles formed with a virtual line extending in the vertical direction when the sub-frame (220) is placed in the second state.

[0054] The upper sub-link portion (420) can be rotatably connected to the sub-frame (220). The upper sub-link portion (420) can extend in a different direction from the lower sub-link portion (410). The upper sub-link portion (420) can be connected to the lower sub-link portion (410) through the sub-link bend portion (430) so as to form an angle that is less than a straight angle and greater than a right angle. The upper sub-link portion (420) can be arranged parallel to the horizontal direction when the sub-frame (220) is in the second state.

[0055] The sub-link bending portion (430) may have a curved shape with a curvature. The sub-link bending portion (430) may be bent and connected between the lower sub-link portion (410) and the upper sub-link portion (420). When the sub-frame (220) is placed in the second state, the sub-link bending portion (430) may be placed on the upper side of the main frame (210), and when the sub-frame (220) is placed in the first state, the sub-link bending portion (430) may be placed on the lower side of the main frame (210). Although the sub-link bending portion (430) is illustrated in the drawing according to the present embodiment, the sub-link bending portion (430) may be omitted. In other words, the lower sub-link portion (410) and the upper sub-link portion (420) may be directly connected while forming a corner.

[0056] The elastic member (500) can be coupled to the main link (300) and the main frame (210) to apply elastic force to the main link (300). The elastic member (500) can be rotated by the rotation of the subframe (220). The elastic member (500) can apply elastic force in the direction in which the subframe (220) rises when the subframe (220) rotates and rises or falls. The elastic member (500) can be arranged such that one end is rotatably connected to the main link (300) and the other end is rotatably connected to the main frame (210), and one end is positioned higher than the other end. The elastic member (500) can be rotated about one end by the rotation of the subframe (220). The center of rotation of the elastic member (500) can be positioned higher than the centers of rotation of the main link (300) and the sublink (400).

[0057] The damper (600) is disposed on the main frame (210) and can be extended or contracted by the rotation of the main link (300) so as to reduce the transport speed of the subframe (220) when the subframe (220) moves and descends. The damper (600) can be disposed on the lower side of the main frame (210). The damper (600) can be disposed so as to contract when the subframe (220) is placed in a first state and extend when the subframe (220) is placed in a second state, or can be disposed so as to contract when the subframe (220) is placed in the second state and extend when the subframe (220) is placed in the first state. The damper (600) can be formed in multiple units. The multiple dampers (600) can include a first damper (610) and a second damper (620).

[0058] The first damper (610) may be supported on the main frame (210) so as to be compressed by the main link (300) when the subframe (220) is in the first state. In addition, the first damper (610) may be extended when the main link (300) is released from the pressurization when the subframe (220) is rotated from the first state to the second state. The first damper (610) may be supported on the main frame (210) so as to be extended toward the front upper side of the main frame (210). In other words, the first damper (610) may be arranged to be inclined so that the front end is arranged higher than the rear end.

[0059] The second damper (620) may be supported on the main frame (210) in front of the first damper (610) so as to be compressed by the main link (300) when the subframe (220) is placed in the second state. The first main link end (300a) of the main link (300) may be positioned between the second damper (620) and the first damper (610). In addition, the second damper (620) may be extended when the pressurization of the main link (300) is released when the subframe (220) is rotated from the second state toward the first state. The second damper (620) may be supported on the main frame (210) so as to be extended toward the rear upper side of the main frame (210). In other words, the second damper (620) can be supported on the main frame (210) at an angle so that the rear end is positioned higher than the front end.

[0060] Hereinafter, the operation and effect according to the first embodiment of the present invention will be described.

[0061] The damper (600) of the bed (1) according to the first embodiment of the present invention can reduce the moving speed of the subframe (220) by expanding or contracting due to the rotation of the main link (300) when the subframe (220) moves and descends, and thus can reduce the impact applied to the subframe (220) when the subframe (220) is placed in the first state or the second state.

[0062] Additionally, the damper (600) can be extended when the subframe (220) rises, so that the subframe (220) can be easily moved from the first state or the second state.

[0063] In addition, since the elastic member (500) is supported by the main link (300) and the main frame (210) and can apply elastic force to the main link (300), when the subframe (220) is lowered, the elastic member (500) can reduce the moving speed of the subframe (220).

[0064] Hereinafter, a bed (1) according to a second embodiment of the present invention will be described with reference to FIGS. 7 to 9. In describing the second embodiment, there is a difference in that the damper (600) is supported on the main link (300) and a bracket (700) is additionally provided. Therefore, the description will focus on these differences.

[0065] The first damper (610) can be supported on the main link (300) and rotated together with the main link (300) so as to extend in a direction perpendicular to the direction in which the main link (300) extends. In other words, the first damper (610) can be supported on the lower main link part (310). The first damper (610) can be tilted so that the front side is positioned lower than the rear side when the subframe (220) is in the first state. In addition, the first damper (610) can be positioned so that the front side is positioned higher than the rear side when the subframe (220) is in the second state.

[0066] The second damper (620) may be supported on the main link (300) so as to extend in a direction perpendicular to the direction in which the main link (300) extends and may rotate together with the main link (300). In other words, the first damper (610) may be supported on the lower main link portion (310). In addition, the second damper (620) may be arranged so as to extend in the opposite direction to the first damper (610). This second damper (620) may be inclined so that the front side is positioned lower than the rear side when the subframe (220) is in the second state. In addition, the second damper (620) may be positioned so that the front side is positioned higher than the rear side when the subframe (220) is in the first state.

[0067] A bracket (700) can pressurize a plurality of dampers (600). A plurality of brackets (700) can be formed and supported on a main frame (210) while being spaced apart from each other in the front-rear direction. A first main link end (300a) of a main link (300) can be positioned between the plurality of brackets (700). The plurality of brackets (700) can include a first bracket (710) and a second bracket (720).

[0068] The first bracket (710) can pressurize the first damper (610) when the subframe (220) is placed in the first state. By the first bracket (710), the first damper (610) can be contracted by coming into contact with the first bracket (710) when the subframe (220) is rotated toward the first state. The contact surface of the first bracket (710) can be arranged to be inclined downwardly forward so as to come into contact with the first damper (610). The contact surface of the first bracket (710) can be formed to be larger than the front surface of the first damper (610) so as to come into contact with the front surface of the first damper (610). In addition, the first bracket (710) can be spaced apart from the first damper (610) when the subframe (220) is placed in the second state.

[0069] The second bracket (720) can pressurize the second damper (620) when the subframe (220) is placed in the second state. By the second bracket (720), the second damper (620) can be contracted by coming into contact with the second bracket (720) when the subframe (220) is rotated toward the second state. The contact surface of the first bracket (710) can be arranged to be inclined forward and upward so as to come into contact with the second damper (620). The contact surface of the second bracket (720) can be formed to be larger than the rear surface of the second damper (620) so as to come into contact with the rear surface of the second damper (620). In addition, the second bracket (720) can be spaced apart from the second damper (620) when the subframe (220) is placed in the first state.

[0070] Hereinafter, the operation and effect of the bed (1) according to the second embodiment of the present invention will be described.

[0071] According to the second embodiment of the present invention, when the subframe (220) is in the first state or the second state, any one of the plurality of dampers (600) can be pressurized by the plurality of brackets (700) of the bed (1), so that the rotational speed of the main link (300) can be reduced.

[0072] In addition, since the contact surface of each of the plurality of brackets (700) can be formed to be inclined, the plurality of dampers (600) can be pressurized even when supported by the main link (300) and rotated together with the main link (300).

[0073] Although specific embodiments of the present invention have been described, these are merely examples, and the present invention is not limited thereto, but should be construed to have the broadest scope consistent with the technical concepts disclosed herein. Those skilled in the art may combine / substitute the disclosed embodiments to implement patterns of shapes not specified, but this also does not depart from the scope of the present invention. In addition, those skilled in the art may easily modify or alter the disclosed embodiments based on the present specification, and it is clear that such modifications and alterations also fall within the scope of the present invention.

Claims

1. A bed frame including a main frame and a sub frame provided to be movable relative to the main frame; a main link rotatably connected to the main frame and the subframe; and When the subframe moves and descends, a damper is included that extends or contracts by the rotation of the main link so that the moving speed of the subframe is reduced. The above subframe can be placed in a first state in which the center is positioned on the upper side of the main frame so as to overlap the main frame by the rotation of the main link, or in a second state in which the center is positioned further forward than the first state. The above damper, When the subframe is placed in the first state, it contracts, and when the subframe is placed in the second state, it expands, The subframe contracts when placed in the second state, and the subframe expands when placed in the first state. Bed.

2. In paragraph 1, The above damper is composed of multiple pieces, A first damper supported on the main frame so as to be compressed and contracted by the main link when the subframe is placed in the first state; and When the subframe is placed in the second state, a second damper is supported on the main frame in front of the first damper so as to be compressed by the main link, The first damper is extended when the subframe is rotated from the first state to the second state, and the pressure of the main link is released. The second damper is configured to release the pressure on the main link and extend when the subframe rotates from the second state toward the first state. Bed.

3. In paragraph 1, The above damper includes a first damper supported on the main frame and extending toward the front upper side of the main frame. Bed.

4. In paragraph 1, The above damper includes a second damper supported on the main frame and extending toward the rear upper side of the main frame. Bed.

5. In paragraph 2, The above main link is, It includes a first main link end rotatably connected to the main frame and a second main link end rotatably connected to the subframe, and when the subframe rotates, it rotates around the first main link end. The first main link end is located between the first damper and the second damper. Bed.

6. In paragraph 1, Further comprising a bracket supported on the main frame and pressurizing the damper, Bed.

7. In paragraph 6, The above damper is formed in multiple pieces, The above plurality of dampers, A first damper supported on the main link so as to extend in a direction perpendicular to the direction in which the main link extends; and A second damper supported on the main link so as to extend in a direction perpendicular to the direction in which the main link extends, but extending in the opposite direction to the first damper, Bed.

8. In paragraph 7, The above brackets are formed in multiple pieces, The above main link is, It includes a first main link end rotatably connected to the main frame, and a second main link end rotatably connected to the subframe, and when the subframe rotates, it rotates around the first main link end, The first main link end is positioned between the plurality of brackets, Bed.

9. In paragraph 8, The above plurality of brackets are, A first bracket having a contact surface formed to contact the first damper when the subframe is placed in the first state; and A second bracket is disposed in front of the first bracket and has a contact surface formed to contact the second damper when the subframe is in the second state, The contact surface of the above first bracket is arranged to be inclined downward toward the front, The contact surface of the second bracket is arranged to be inclined upwardly toward the front, Bed.

10. In paragraph 1, Further comprising an elastic member, one end of which is coupled to the main link and the other end of which is coupled to the main frame to apply elastic force to the main link. Bed.

11. In paragraph 1, The above main link is, A lower main link part rotatably connected to the above main frame; An upper main link portion rotatably connected to the above subframe; and A main link bending portion having a curved shape and connected between the lower main link portion and the upper main link portion so that the lower main link portion and the upper main link portion are arranged out of alignment with each other, and is arranged on the upper side of the main frame when the subframe is in the second state, and is arranged on the upper side of the main frame when the subframe is in the first state. Bed.

12. In paragraph 11, The above lower main link section is, When the above subframe is placed in the second state, the upper side is tilted forward so as to form a predetermined first angle with an imaginary line extending in the vertical direction, The above upper main link section is, When the above subframe is placed in the second state, the upper side is tilted forward to form a second angle smaller than the first angle with respect to the virtual line. Bed.

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