Sliding impact prevention structure and sliding extension bed applying same

Abstract

Provided is a sliding impact prevention structure applicable to a bed having an extension bed extending in a sliding manner. The sliding impact prevention structure includes a damping assembly that provides a damping force against a runner that moves relative to a seating position. The damping assembly includes: a damping rail provided on a damping stage and disposed adjacent to a running trajectory of the runner; a catcher guided by the damping rail to move; and a damper having opposite ends rotatably connected to the damping stage and the catcher, respectively. The damping rail includes a first section in which the catcher rotates and moves, and a second section which is disposed between the first section and the seating position and in which the catcher moves in parallel with the runner. In at least a partial section of the first section, as the catcher rotates while moving toward the second section, the damper is operated.

Description

Sliding shock-resistant structure and sliding extension bed using the same

[0001] This application claims the benefit of priority from Republic of Korea Patent Application No. 10-2024-0003160, filed January 8, 2024, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a sliding impact prevention structure applied to an extendable bed having a main body bed and an extension bed that extends from the main body bed in a sliding manner.

[0003] As quality of life improves, medical devices or massage beds equipped with heating elements for physical treatments like spinal massage and traction are becoming more widespread. Furthermore, beds offering these features are becoming widespread, even in homes. Since massage and medical devices used at home are not intended for continuous use, they are often folded or stacked for compact storage when not in use, minimizing space consumption.

[0004] This type of medical device, such as a bed, comprises a main body bed with a built-in physical treatment unit, and an extension bed that slides or extends longitudinally from the main body bed. The main body bed is manufactured to a length that allows the upper body of a human body to lie flat, and the extension bed is also manufactured to a corresponding length and can be extended or retracted longitudinally.

[0005] The above-mentioned extension bed extends or retracts horizontally. To achieve this motion, a guide rail may be installed on one of the main bed and the extension bed, and a runner, such as a travel roller, that moves under the guidance of the guide rail may be provided on the other.

[0006] Meanwhile, in order to stably maintain the extension bed in the retracted or extended position, an inclined section may be provided at the longitudinal end of the guide rail. However, when the extension bed is extended or retracted, if the runner reaches the inclined section provided at the end of the guide rail, the runner accelerates as it descends the incline, and the accelerated runner hits the surrounding components, etc., at the final position, causing an impact.

[0007] These impacts can damage not only the sliding components but also various components built into the bed. Furthermore, they can cause significant vibration and noise, potentially contributing to noise between floors.

[0008] In particular, the inclined section of the guide rail for maintaining the position of the extension bed further accelerates the relative movement of the runner, making it difficult to smoothly absorb the shock with the shock-prevention structure of the existing damping method.

[0009] In addition, the existing damping method applied a damping structure that catches a separate stopper rather than directly catching the driving roll, which increased the number of parts and had the problem of requiring additional space to install the shock-absorbing structure.

[0010] Meanwhile, damping can be made smoother and more seamless by varying the damping pattern as it progresses. However, implementing these different damping methods necessitates the use of two or more dampers, or custom-made dampers. This improvement in perceived quality inevitably leads to an increase in the number of components and higher manufacturing costs.

[0011] The present invention has been devised to solve the above-described problem, and its purpose is to provide a shock-preventing structure capable of preventing shock that may occur at the expansion completion point or the introduction completion point of a sliding expansion bed, and a sliding expansion bed applying the same.

[0012] The purpose of the present invention is to provide a shock-absorbing structure capable of sufficiently absorbing shock corresponding to further acceleration of a runner in an inclined section of a guide rail provided to maintain an extension bed fixed at a sliding completion point of the extension bed, and a sliding extension bed using the same.

[0013] The present invention aims to provide a shock-prevention structure and a sliding expansion bed using the same, which can minimize the space occupied by the shock-prevention structure and minimize the increase in the number of parts even when applying the shock-prevention structure by absorbing the shock by catching the runner itself without separate parts.

[0014] The purpose of the present invention is to provide a shock-resistant structure that implements various forms of damping with a minimum number of parts, thereby realizing high emotional quality without increasing the number of parts or manufacturing costs, and a sliding expansion bed using the same.

[0015] The technical objectives of the present invention are not limited to the purposes mentioned above. Other objectives and advantages of the present invention not mentioned above can be understood through the following description and will be more clearly understood through the embodiments of the present invention. Furthermore, it will be readily apparent that the objectives and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims.

[0016] The present invention, which aims to solve the above-described problem, provides a damping assembly that provides a damping force to a runner that moves relatively toward a settling position.

[0017] The above damping assembly has a damping stage having a damping rail arranged adjacent to the running trajectory of the runner.

[0018] On the above damping rail, a catcher that moves under the guidance of the damping rail is installed so as to be able to slide.

[0019] The above damping assembly has a damper that connects the damping stage and the catcher and provides a damping force for the operation of the catcher.

[0020] One end of the damper is rotatably connected to an input connection of the catcher, and the other end is rotatably connected to a damping support of the damping stage.

[0021] The above damper provides a damping force while the gap between the input connection and the damping support changes.

[0022] The above damping rail includes a first section along which the catcher rotates and moves.

[0023] When the catcher moves the first section toward the settling position, the catcher rotates by a predetermined angle.

[0024] The damping rail may further include a second section in which the catcher moves in parallel with the runner. The second section may be provided between the first section and the settling position.

[0025] The catcher may be positioned in a standby position without contacting the runner. The first section may be positioned between the standby position and the second section.

[0026] The gap between the input connection portion and the damping support portion may be gradually narrowed as the catcher moves and rotates toward the settling position in at least a portion of the first section.

[0027] The gap between the input connection portion and the damping support portion may gradually widen as the catcher moves toward the settling position in the second section.

[0028] Meanwhile, the gap between the input connection portion and the damping support portion may gradually widen as the catcher moves and rotates toward the settling position in at least a portion of the first section.

[0029] When the runner reaches the settling position, the catcher can be positioned at the settling position.

[0030] The damper can provide an elastic force to the input connection in a direction opposite to a direction in which the input connection moves relative to the damping support as the catcher moves and rotates toward the settling position in at least a portion of the first section.

[0031] The damper may provide an elastic force to the input connection in a direction that impedes relative movement of the input connection with respect to the damping support as the catcher moves and rotates toward the settling position in at least a portion of the first section.

[0032] The above damper can provide elastic force in a direction in which the input connection part moves away from the damping support part.

[0033] As the catcher moves and rotates toward the settling position in at least a portion of the first section, the gap between the input connection and the damping support may gradually narrow, and the damper may provide an elastic force in a direction in which the input connection moves away from the damping support.

[0034] The above damper may include a gas spring having a first damping member and a second damping member that slide relative to each other along the longitudinal direction.

[0035] The above damper can be installed by connecting the damping stage and the catcher so that the distance from the settling position to the damping support is longer than the distance from the settling position to the input connection.

[0036] The above damper can be installed to connect the damping stage and the catcher such that the input connection portion is positioned between the damping support portion and the seating position.

[0037] The above damper can be installed by connecting the damping stage and the catcher so that the distance from the settling position to the damper is longer than the distance from the settling position to the catcher.

[0038] The above damper can be installed to connect the damping stage and the catcher so that the catcher is positioned between the damper and the settling position.

[0039] The damping rail may include a connecting section extending toward the settling position and approaching the movement trajectory of the runner.

[0040] The above connecting section can be extended in a smooth curved shape.

[0041] The above damping rail may include a settling travel section extending parallel to the movement trajectory of the runner as it extends toward the settling position.

[0042] The above-mentioned settling section can be arranged between the above-mentioned connecting section and the above-mentioned settling position.

[0043] The above damping rail may include a waiting travel section that extends toward the settling position and is close to the movement trajectory of the runner and is connected to the connecting section.

[0044] The above waiting driving section may be in the form of a straight extension.

[0045] The above connecting section may be arranged between the above waiting driving section and the above settling driving section.

[0046] The above catcher may have a first contact part that moves in contact with the damping rail in the above settling driving section.

[0047] The catcher may further include a second joint that is positioned a predetermined distance apart from the first joint and moves in contact with the damping rail.

[0048] The above first joint can move parallel to the runner while the catcher moves through the first section and the second section.

[0049] On the other hand, the second joint part can move in the connection section of the damping rail while the catcher moves in the first section, and can move in parallel with the runner in the settling section of the damping rail while the catcher moves in the second section.

[0050] The distance between the first contact portion and the input connection portion may be longer than the distance between the first contact portion and the second contact portion.

[0051] The second connecting portion may be positioned between the first connecting portion and the input connecting portion.

[0052] The above connecting section may include a reaction section and a compliance section arranged between the reaction section and the settling driving section.

[0053] In a state where the second joint is located in the reaction section, the second joint serves as a fulcrum for the elastic force applied by the damper to the input connection, so that the first joint can be elastically applied in a direction away from the seating position.

[0054] In a state where the second joint is located in the compliance section, the elastic force can elastically apply the second joint toward the seating position.

[0055] The catcher may have a catching surface that catches the runner in the second section. The catching surface may have a surface corresponding to at least a portion of the outer circumferential surface of the runner. The surface of the catching surface may define a predetermined virtual center.

[0056] The distance between the rotation center of the catcher and the input connection part can be set to be longer than the distance between the rotation center and the virtual center of the catching surface.

[0057] The present invention provides a bed having the above damping assembly.

[0058] The above bed includes a main body bed and an extension bed that moves relative to the main body bed to expand or contract the bed.

[0059] In one example, the damping assembly may be installed on the main body bed, and the runner may be installed on the extension bed. In another example, the damping assembly may be installed on the extension bed, and the runner may be installed on the main body bed.

[0060] The above bed is not limited to a form that provides a horizontal support surface, but can also be understood as a concept that includes a form that provides an inclined support surface, such as a sofa or recliner. Furthermore, the above bed can be understood as a concept that encompasses furniture that supports the user's weight, or a massage device or treatment device.

[0061] The relative movement between the main body bed and the extension bed may include sliding movement. The trajectory of the sliding movement is not limited to a straight line. For example, the trajectory may include a concept including a curved trajectory.

[0062] The above relative movement is not limited to sliding movement. For example, the above movement can be understood as a concept that includes various other forms of movement, such as rotational movement and pivotal movement, and combinations of other forms of movement.

[0063] By applying the damping assembly of the present invention, it is possible to reliably prevent impact that may occur at the expansion completion point or the retraction completion point of the sliding expansion bed.

[0064] According to the damping assembly of the present invention, the impact force applied at the beginning of damping is reliably absorbed and temporarily stored, and the temporarily stored energy is used in a state where sufficient damping is achieved to ensure smooth running of the runner, thereby achieving even damping in the damping section and thus improving the quality of sensation.

[0065] The damping assembly of the present invention can minimize the increase in the number of parts by applying a method of catching the runner itself without a separate part, and also minimize the space occupied by the shock-absorbing structure.

[0066] The damping assembly of the present invention can further enhance the initial damping effect by utilizing the action of a catcher that rotates to catch a runner in the initial stage of damping.

[0067] The damping assembly of the present invention can have an excellent initial damping effect and can stably move the runner at a constant speed to a settling point after sufficient damping is achieved by linking the operation of the catcher rotating to catch the runner in the initial stage of damping and the operation of the catcher moving in translation after catching the runner with two different operating directions of a single damper.

[0068] According to the present invention, the operation of the damper linked to the rotation of the catcher is such that both the elastic force and the damping force of the damper absorb shock, and the operation of the damper linked to the translational movement of the catcher is such that the elastic force provides the movement force of the catcher, while the damping force suppresses an increase in the movement speed of the catcher. Thus, the present invention can implement all the various operations necessary for damping the runner's movement with just one gas spring.

[0069] According to the present invention, the standby position and standby posture maintenance functions of the catcher can be implemented using only the gas spring without any additional configuration.

[0070] In addition to the effects described above, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

[0071] Figure 1 is a perspective view of the bed in the retracted state to which the sliding impact prevention structure of the embodiment can be applied.

[0072] Figure 2 is a plan view of Figure 1.

[0073] Figure 3 is a cross-sectional view taken along line III-III of Figure 2.

[0074] Figure 4 is an exploded perspective view of Figure 3.

[0075] Fig. 5 is an enlarged view of the damping assembly portion of Fig. 4.

[0076] Figure 6 is a cross-sectional view taken along line VI-VI of Figure 2.

[0077] Figure 7 is an exploded perspective view of Figure 6.

[0078] Fig. 8 is an enlarged view of the damping assembly portion of Fig. 7.

[0079] Figure 9 is a perspective view of the bed of Figure 1 in a pulled-out state.

[0080] Figure 10 is a plan view of Figure 9.

[0081] Fig. 11 is a cross-sectional view taken along line XI-XI of Fig. 10.

[0082] Figure 12 is a cross-sectional view taken along line XII-XII of Figure 10.

[0083] Figure 13 is a perspective view of the bed of Figure 9 with the cover removed.

[0084] Fig. 14 is a cross-sectional view of Fig. 3.

[0085] Fig. 15 is a cross-sectional view of Fig. 11.

[0086] Figure 16 is an enlarged view of the damping rail section.

[0087] Figure 17 is an enlarged view of the catcher.

[0088] Figures 18 to 24 sequentially illustrate the operation of the damping assembly. Figures 18 to 22 illustrate the process in which the driving roll moves to and settles at the end of the damping assembly, and Figures 23 and 24 illustrate the process in which the driving roll exits the damping assembly toward the slide driving surface.

[0089] [Explanation of symbols]

[0090] 10: Bed (medical device) 11: Main body bed 13: Installation space 14: Opening 15: Cover 16: Extension bed 20: Physical treatment section 21: Heating electrode 30: Sliding assembly 40: Guide assembly 50: Guide rail member 51: Guide surface 52: Slide running surface 53: Settling running surface (inclined surface) 60: Damping assembly 61: Damping stage 613: Damping support shaft (axial projection) 62: Stage cover 623: Damping support groove (receiving groove) 63: Damping support part 64: Damping rail (track groove) 641: Settling running section 642: Settling end 644: Waiting running section 645: Waiting end 647: Connection section 65: Damper (gas spring) 66: First damping member (cylinder) 661: Support connection (first hinge hole) 67: Second damping member (piston) 671: Input support (second hinge hole) G: Gap 68: Catcher seating part 70: Catcher 71: Catching surface C: Virtual center 72: Catching end 73: Return end 74: First sliding part (first travel projection, rotation center) 75: Second sliding part (second travel projection) 76: Input connection part (snap shaft) d1: First distance d2: Second distance d3: Third distance 80: Travel roll (runner) 81: Travel surface 82: Step

[0091] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0092] The present invention is not limited to the embodiments disclosed below, but can be implemented in various forms and with various modifications. However, these embodiments are provided to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. Therefore, the present invention is not limited to the embodiments disclosed below, but should be understood to include all modifications, equivalents, and substitutes included within the technical spirit and scope of the present invention, as well as substitutions or additions of the components of one embodiment with those of another embodiment.

[0093] The attached drawings are merely intended to facilitate understanding of the embodiments disclosed in this specification, and should not be construed as limiting the technical ideas disclosed in this specification, but should be understood to encompass all modifications, equivalents, and substitutes included within the spirit and technical scope of the present invention. In the drawings, the components may be expressed in exaggerated sizes or thicknesses for ease of understanding, but the scope of protection of the present invention should not be construed as being limited thereby.

[0094] The terminology used in this specification is only used to describe specific implementations or examples and is not intended to limit the present invention. In addition, the singular expression includes the plural expression unless the context clearly indicates otherwise. In the specification, terms such as "comprises" and "consists of" are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification. In other words, it should be understood that terms such as "comprises" and "consists of" in the specification do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0095] While terms including ordinal numbers, such as "first" and "second," may be used to describe various components, these components are not limited by these terms. These terms are used solely to distinguish one component from another. Therefore, unless otherwise stated, a "first" component may also be a "second" component.

[0096] When a component is referred to as being "connected" or "in contact with" another component, it should be understood that it may be directly connected or in contact with that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "in direct contact with" another component, it should be understood that there are no other components intervening.

[0097] When a component is referred to as being "above" or "below" another component, it should be understood that it is not only positioned directly above that other component, but that there may also be other components present in between.

[0098] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0099] Throughout the specification, when reference is made to "A and / or B", this means A, B, or A and B, unless otherwise stated, and when reference is made to "C through D", this means C or more and D or less, unless otherwise stated.

[0100] <Sliding Extension Bed>

[0101] Referring to FIGS. 1, 2, 9, and 10, the sliding extension bed (10) of the embodiment includes a main body bed (11) and an extension bed (16) that can slide in a direction parallel to the longitudinal direction of the spine of a lying person to expand or contract a bed on which a user can lie down. When a person lies down with the bed (10) extended, the upper body can be placed on the main body bed (11), and the lower body can be placed on the extension bed (16).

[0102] When the user lies down directly on the bed (10), the user looks upward. For convenience of explanation, the direction the user looks when lying down directly on the bed (10) is referred to as the first direction.

[0103] The above bed (10) can be extended by sliding the extension bed (16) horizontally from the main body bed (11), and can be introduced by sliding in the opposite direction to the second direction. For convenience of explanation, the direction in which the extension bed (16) slides and extends from the main body bed (11) is referred to as the second direction.

[0104] According to an embodiment, the bed (10) may be installed horizontally. Accordingly, the first direction may be parallel to the direction of gravity but opposite to the direction of gravity, and the second direction may be parallel to the horizontal direction but in a direction from the cranial to the caudal direction of the spine.

[0105] However, the first and second directions are not necessarily limited to or related to the direction of gravity or the horizontal direction. Furthermore, the first and second directions do not necessarily have to be orthogonal; they can simply be intersecting directions. However, it is preferable that the first and second directions intersect more perpendicularly than parallel.

[0106] Referring to Fig. 13, a physical treatment unit (20), such as a heater, capable of performing physical treatment such as spinal massage or traction, may be installed on the main body bed (11). The physical treatment unit (20) may massage the spine area of ​​the user's upper body while the user is lying directly on the bed (10). For this purpose, the physical treatment unit (20) may be positioned at the center of the width direction of the main body bed (11). For convenience of explanation, the width direction of the bed (10) is referred to as a third direction. Then, it will be understood that the third direction is a direction that intersects both the first direction and the second direction.

[0107] Referring to Fig. 13, a predetermined installation space (13) in which the physical treatment unit (20) is installed is provided on the lower surface of the main body bed (11), and an opening (14) is provided on the surface of the main body bed (11) so as to communicate with the installation space (13). The opening (14) may be elongated in the second direction to correspond to the human spine. The surface of the main body bed (11) may be covered with a cover (15) so as to prevent the physical treatment unit (20) from being directly exposed to the outside through the opening (14).

[0108] The above physical treatment unit (20) may include a thermal electrode (21) that contacts the user's back, and the thermal electrode (21) may travel in a second direction and an opposite direction and contact different locations of the user's spine. The thermal electrode (21) may ascend in the first direction to apply pressure to the vicinity of the user's spine and may descend in a direction opposite to the first direction to release the pressure. In conjunction with or independently of this, the thermal electrode (21) may travel in the second direction to scan or massage the spine, and may travel in a direction opposite to the second direction to massage or tract the spine.

[0109] However, this is only an example, and the physical treatment performed by the physical treatment unit (20) may be diverse, and the operation method for this may also be diverse.

[0110] Sliding Assembly

[0111] Referring to FIGS. 1 to 24 below, a sliding assembly (30) installed on the main body bed (11) and the extension bed (16) for sliding expansion of the bed (10) will be described.

[0112] Referring to FIGS. 1 to 12, when the extension bed (16) is inserted into the main body bed (11), the extension bed (16) and the main body bed (11) overlap in the longitudinal direction by a considerable section. And when the extension bed (16) is extended from the main body bed (11), the extension bed (16) overlaps in the longitudinal direction with the main body bed (11) by only a portion of the section.

[0113] The sliding assembly (30) includes a runner (80) and a guide assembly (40) that guides the movement of the runner (80). For example, the runner (80) may be a travel roll (80) that is in rolling contact with a guide surface (51) of the guide assembly (40). The guide surface (51) defines a travel trajectory of the travel roll (80). Accordingly, the guide surface (51) may be extended at least as long as the sliding distance of the extension bed (16).

[0114] A running surface (81) that makes rolling contact with the guide surface (51) is provided around the circumference of the running roll (80). In addition, a step portion (82) is provided on one side of the running surface (81) in the third direction to prevent the running roll (80) from being separated from the guide surface (51) in the third direction. The diameter of the step portion (82) is larger than the diameter of the running surface (81). Accordingly, the third-direction side surface of the step portion (82) interferes with the third-direction side surface of a guide rail member (50) to be described later, thereby regulating the third-direction position of the running roll (80) with respect to the guide surface (51).

[0115] Referring to FIGS. 2 to 4, 10, and 11, in the first example, the guide assembly (40) may be provided on the main body bed (11), and a driving roll (80) may be provided on an extension bed (16) that slides relative to the main body bed (11).

[0116] According to this, the guide assembly (40) is fixed, the load of the extension bed (16) is applied to the driving roll (80), and the driving roll (80) can move in rolling contact on the guide surface (51) of the guide assembly (40) while the extension bed (16) slides.

[0117] Referring to FIGS. 2, 6, 7, 10 and 12, in the second example, the guide assembly (40) is provided on an extension bed (16) that slides relative to the main body bed (11), and a driving roll (80) may be provided on the main body bed (11).

[0118] According to this, the driving roll (80) is fixed, the load of the extension bed (16) is applied to the guide assembly (40), and the guide surface (51) of the guide assembly (40) can move while making rolling contact on the driving roll (80) while the extension bed (16) slides.

[0119] That is, in the sliding assembly (30), the guide assembly (40) and the travel roll (80) slide relative to each other, and it is not necessarily the case that the guide assembly (40) is fixed and the travel roll (80) moves. However, for the sake of convenience of explanation, the following explanation will be given on the assumption that the guide assembly (40) is fixed and the travel roll (80) slides relative to the guide assembly (40). It is obvious that this explanation describes both the first and second examples described above.

[0120] The guide assembly (40) has a guide rail member (50) that provides a guide surface (51) along which a driving roll (80) runs. The guide surface (51) includes a slide running surface (52) that extends substantially in a second direction, and a settling running surface (53) provided at a longitudinal end of the slide running surface (52). The settling running surface (53) has an inclined surface shape that extends obliquely in a first direction with respect to the extension direction of the slide running surface (52).

[0121] The above-mentioned driving roll (80) moves in the second direction under the guidance of the slide driving surface (52) as the extension bed (16) is slid out from the main body bed (11). When the extension bed (16) reaches the vicinity of the maximum extension position, the driving roll (80) moves along the settling driving surface (53).

[0122] The driving roll (80) accelerates and moves along the inclined settling running surface (53). When the driving roll (80) reaches the end of the settling running surface (53) as illustrated in Fig. 22, it is settling at that position. Accordingly, to the extent that the extension bed (16) receives a weak force in the incoming direction, the driving roll (80) maintains that position without leaving the settling running surface (53).

[0123] In order to maintain the extended position of this extension bed (16), since the settling running surface (53) is inclined, when the running roll (80) moves along the settling running surface (53), the running roll (80) is accelerated.

[0124] In order to prevent impact due to acceleration of the driving roll (80), a damping assembly (60) is installed near the mounting driving surface (53) provided at the longitudinal end of the guide rail member (50).

[0125] Referring to FIGS. 5, 8, 16 and 17, the damping assembly (60) includes a damping stage (61) provided on the guide rail member (50) and a stage cover (62) covering the damping stage (61) in a third direction. The damper (65) and catcher (70) of the damping assembly (60), which will be described later, are installed in an internal space defined by the damping stage (61) and the stage cover (62).

[0126] The damper (65) has a support connection portion (661) and an input support portion (671). The damper (65) can provide a damping force when the distance between the support connection portion (661) and the input support portion (671) changes. The damping force of the damper (65) can increase as the rate of change in the distance between the support connection portion (661) and the input support portion (671) increases.

[0127] As an example, the damper (65) may be a gas spring damper. The damper (65) may include a first damping member (66) in a cylinder shape and a second damping member (67) in a piston shape that is slidably connected to the first damping member (66).

[0128] The gas spring type damper (65) can provide elastic force in the direction in which the second damping member (67) is withdrawn from the first damping member (66). In addition, the damper (65) can provide damping force when the second damping member (67) is withdrawn from the first damping member (66).

[0129] The damping stage (61) and the stage cover (62) are provided with a damping support member (63) that is connected to the support connection member (661) of the damper (65) and supports the damper (65). The damping support member (63) may include a damping support shaft (613) that protrudes and extends in a third direction from the damping stage (61) toward the stage cover (62), and a damping support groove (623) that is provided in the stage cover (62) and has a receiving groove shape that receives and is fastened to the tip of the damping support shaft (613). Accordingly, both ends of the damping support member (63) can be firmly supported by the damping stage (61) and the stage cover (62).

[0130] Of course, a damping support groove may be provided in the above damping stage (61) and a damping support shaft may be provided in the above stage cover (62). In addition, it goes without saying that both ends of a separate damping support shaft may be fixed to the damping stage (61) and the stage cover (62), respectively.

[0131] The support connection part (661) of the above damper (65) may be a first hinge hole (661) in the form of a hole into which the damping support shaft (613) is inserted. The first hinge hole (661) may be provided, for example, at an end of the first damping member (66). Since the damper (65) provides damping by the expansion and contraction of the first damping member (66) and the second damping member (67), it goes without saying that the support connection part (661) may also be provided at an end of the second damping member (67).

[0132] Accordingly, the damper (65) is installed so as to be rotatable around the damping support member (63).

[0133] The input support (671) of the damper (65) is connected to a catcher (70) to be described later, and receives an input of a motion in which the catcher (70) catches and moves the travel roll (80). The input support (671) of the damper (65) can be rotatably connected to an input connection (76) of the catcher (70) to be described later. The input support (671) and the input connection (76) can be rotatably connected about a center of rotation parallel to the third direction.

[0134] The input support portion (671) of the above damper (65) may be a second hinge hole (671) in the form of a hole that is hinge-connected to the input connection portion (76). The second hinge hole (671) may be provided, for example, at an end of the second damping member (67). Since the damper (65) provides damping by the expansion and contraction of the first damping member (66) and the second damping member (67), it goes without saying that the input support portion (671) may also be provided at an end of the first damping member (66).

[0135] Accordingly, one end of the damper (65) can rotate around the damping support (63), and the other end of the damper (65) can rotate around the input connection (76), and the damper (65) provides damping force by being extended in length between the damping support (63) and the input connection (76). That is, the damper (65) provides damping force when the gap (G) between the damping support (63) and the input connection (76) changes.

[0136] Meanwhile, the damper (65) of the embodiment is of a gas spring type, and continuously provides elastic force to the input connection portion (76) in a direction in which the input connection portion (76) moves away from the damping support portion (63). Accordingly, the damper (65) can exhibit a greater shock absorption function when an operation in which the gap (G) decreases occurs. In addition, the damper (65) can provide a uniform damping force even when an operation in which the gap (G) increases occurs.

[0137] The above damping assembly (60) has a damping rail (64) that regulates the movement trajectory of the catcher (70) and the posture according to the position of the catcher (70). The damping rail (64) regulates the posture of the catcher (70) and guides its movement. The embodiment exemplifies that the damping rail (64) is implemented in the form of a trajectory groove extending along a predetermined trajectory. The damping rail (64) may be provided on both the damping stage (61) and the stage cover (62).

[0138] The above damping rail (64) includes a settling travel section (641) that defines a trajectory of a catcher (70) that moves together with the travel roll (80) while stably catching the travel roll (80) running in the section of the settling travel surface (53) of the guide surface (51). The settling travel section (641) may extend parallel to the settling travel surface (53). At one longitudinal end of the settling travel section (641), a settling end (642) is provided on which a first sliding portion (74) of the catcher (70), which will be described later, is stably settling.

[0139] The longitudinal end of the settling running section (641) of the above damping rail (64) extends to the vicinity of the boundary between the slide running surface and the settling running surface (53) of the above guide surface (51).

[0140] The longitudinal other end of the settling section (641) of the damping rail (64) is connected to the waiting section (644) through a connecting section (647) that extends in a smooth curved arc shape. The connecting section (647) and the waiting section (644) extend in a direction away from the settling running surface (53) from the longitudinal other end of the settling section (641). The extending direction of the settling section (641) and the extending direction of the waiting section (644) extend to have an internal angle of less than approximately 90 degrees, and both ends of the connecting section (647) are smoothly connected to the settling section (641) and the waiting section (644). Accordingly, the second contact portion (75) of the catcher (70) moving along the damping rail (64), which will be described later, can be smoothly guided when moving between the waiting driving section (644), the connecting section (647), and the settling driving section (641).

[0141] The catcher (70) guided by the damping rail (64) has a catching surface (71) that at least partly protrudes outward from the settling running surface (53) and grips the running roll (80) running on the settling running surface (53). The surface of the catching surface (71) may have a profile of at least a portion of a circle corresponding to the running surface (81) of the running roll (80). The embodiment exemplifies that the catching surface (71) has a surface corresponding to a circumferential section of about 170 degrees of the circle.

[0142] The catcher (70) has a first sliding portion (74) and a second sliding portion (75) that define the movement trajectory and posture of the catcher (70) by sliding and engaging with the damping rail (64). The first sliding portion (74) and the second sliding portion (75) may be, for example, a first traveling projection (74) and a second traveling projection (75) that are inserted into the damping rail (64) in the form of a trajectory groove, respectively. Corresponding to the fact that the damping rail (64) is provided on both the damping stage (61) and the stage cover (62), the first traveling projection (74) and the second traveling projection (75) may also be provided on both sides of the catcher (70) in the third direction.

[0143] The first driving projection (74) and the second driving projection (75) may have a circumferential surface that is approximately cylindrical. Accordingly, the first driving projection (74) and the second driving projection (75) are allowed to rotate relatively while inserted into the damping rail (64).

[0144] The first driving projection (74) and the second driving projection (75) can be spaced apart by a first distance (d1). Then, as the first driving projection (74) and the second driving projection (75) are both inserted into the damping rail (64) and move along the longitudinal direction of the damping rail (64), the posture of the catcher (70) can be controlled.

[0145] The first running projection (74), which is positioned closer to the settling end (642) of the damping rail (64), runs in the settling running section (641), which is a section that extends substantially straight. In contrast, the second running projection (75), which is positioned closer to the waiting end (645) of the damping rail (64), can run in all of the waiting running section (644), the connecting section (647), and the settling running section (641).

[0146] The first driving protrusion (74) can reciprocate along the settling driving section (641) parallel to the settling driving surface (53). Accordingly, the first driving protrusion (74) can substantially reciprocate in a straight line as the catcher (70) moves along the damping rail (64).

[0147] When the second driving projection (75) moves along the settling driving section (641), the catcher (70) moves in a direction parallel to the settling driving surface (53) without changing its posture. The posture that the catcher (70) has in this section may be a gripping posture in which the catching surface (71) completely grips the driving roll (80). In the gripping posture, the center of the driving roll (80) and the virtual center (C) of the catching surface (71) may substantially coincide.

[0148] On the other hand, when the second driving protrusion (75) runs through the waiting driving section (644) and the connecting section (647), the catcher (70) rotates with respect to the first driving protrusion (74) and its posture changes. As the second driving protrusion (75) gets closer to the imaginary straight line including the settling driving section (641), the posture of the catcher (70) becomes closer to the gripping posture.

[0149] The catching end (72) positioned closer to the end of the settling running surface (53) among the circumferential ends of the catching surface (71) protrudes outward from the settling running surface (53) at all positions of the movement trajectory of the catcher (70).

[0150] On the other hand, the return end (73) positioned closer to the boundary between the slide running surface (52) and the settling running surface (53) among the circumferential ends of the catching surface (71) is raised and lowered relative to the settling running surface (53) as the catcher (70) moves along the settling running section (641).

[0151] When the second driving projection (75) is located at the waiting end (645), the return end (73) is located below the settling running surface (53). The return end (73) gradually protrudes from the settling running surface (53) while the second driving projection (75) travels from the waiting end (645) through the waiting running section (644) and the connecting section (647) to reach the settling running section (641).

[0152] If necessary, even while the catcher (70) is in the gripping position, the virtual circle constituting the catching surface (71) may be made to intersect the virtual straight line constituting the settling running surface (53) at two points that are in contact with or very close to the virtual straight line constituting the settling running surface (53), thereby allowing the run roll (80) to come into contact with the settling running surface (53), thereby allowing the load of the extension bed (16) transmitted through the run roll (80) to be distributed and transmitted to the settling running surface and the catcher (70).

[0153] If necessary, while the catcher (70) is in the gripping position, the virtual circle constituting the catching surface (71) may not be in contact with or intersect with the virtual straight line constituting the settling running surface (53), so that the running roll (80) is completely gripped by the catching surface (71), thereby preventing slippage between the settling running surface (53) and the running roll (80).

[0154] The virtual center (C) of the above catching surface (71) is positioned a second distance (d2) away from the first traveling projection (74). The first traveling projection (74) becomes the center of rotation (74) around which the catching surface (71) rotates as the posture of the catcher (70) changes.

[0155] When the second contact portion (75) is at the standby end (645), the virtual line segment (d2 portion) connecting the virtual center (C) and the rotation center (74) extends in a direction inclined from the rotation center (74) toward the slide driving surface (52). That is, the virtual center (C) of the catching surface (71) is arranged to be tilted toward the slide driving surface (52).

[0156] In order to expand the above extension bed (16), the slide is moved so that when the driving roll (80) starts to drive on the settling running surface (53), the driving roll (80) pushes the catching end (72) of the catching surface (71) in the running direction. Then, the first sliding part (74) moves from the settling running section (641) toward the settling end (642), and the second sliding part (75) moves from the waiting end (645) in a direction approaching the settling running section (641). Accordingly, the catcher (70) rotates relatively around the first sliding part (74). While the posture of the catcher (70) changes, the virtual center (C) rotates relatively to the first sliding part (74) so ​​that the virtual line segment (d2) moves to a position orthogonal to the settling running surface (53).

[0157] And when the second contact part (75) enters the settling driving section (641), the catcher (70) assumes a gripping posture, and at this time, the line segment (d2) can be substantially perpendicular to the settling driving surface (53).

[0158] The input connection part (76) connected to the input support part (671) of the above damper (65) may be provided in the form of a snap shaft (76) that can be inserted into the second hinge hole (671). Of course, the input connection part (76) does not necessarily have to have a snap shaft structure, and various modifications are possible as long as the input support part (671) and the input connection part (76) have a structure that can be hinge-connected.

[0159] The above input connection part (76) is spaced apart from the first contact part (74) by a third distance (d3).

[0160] In a standby state where there is no interaction with the driving roll (80), the second contact portion (75) of the catcher (70) is located at the standby end (645) of the damping rail (64), and the return end (73) of the catching surface (71) is placed below the settling driving surface (53).

[0161] When the driving roll (80) drives and meets the catching end (72) of the catcher (70) in the standby state, and pushes the catching end (72) in the driving direction, the catcher (70) rotates around the first sliding part (74) and moves along the extension direction of the settling driving section (641) until the second contacting part (75) passes the standby driving section (644) and the connecting section (647) and reaches the settling driving section (641).

[0162] Accordingly, the input connection part (76) rotates relatively around the first contact part (74). Then, the gap (G) between the damping support part (63) and the input connection part (76) changes, and accordingly, the damping force of the damper (65) acts. That is, the damper (65) dissipates the kinetic energy transmitted to the damper (65) by the driving roll (80) pushing the catcher (70).

[0163] Even after the second contact member (75) reaches the settling travel section (641), if the travel roll (80) continues to travel, the catcher (70) slides while maintaining the gripping posture, and accordingly, the input connection member (76) of the catcher (70) also slides.

[0164] Then, the gap (G) between the damping support (63) and the input connection (76) changes, and accordingly, the damping force of the damper (65) is applied.

[0165] In a preferred embodiment, the third distance (d3) is longer than the second distance (d2) between the first contact portion (74) and the virtual center (C) of the catching surface (71). Accordingly, the distance by which the input connection portion (76) rotates and moves in the circumferential direction relative to the first contact portion (74) is increased more than the circumferential distance by which the virtual center (C) rotates and moves relative to the first contact portion (74).

[0166] Then, the travel distance of the input connection part (76) can be increased compared to the distance traveled by the actual travel roll (80) pushing the catcher (70), and the damping force of the damper (65) connected thereto can be more greatly applied. Accordingly, at the initial stage of damping entry, the kinetic energy of the extension bed (16) entering the settling travel surface (53) with a large momentum can be quickly dissipated by the high damping force of the damper (65).

[0167] In particular, the second joint (75) is spaced apart from the first joint (74) by a first distance (d1) and rotates relatively around the first joint (74). If the damper (65) does not initially exert a high damping force, the second joint (75) may be strongly pressed against the inner surface of the standby end (645) of the damping rail (64), which may cause wear and damage to the second joint (75) and the damping rail (64).

[0168] In the embodiment, the third distance (d3) is made longer than the second distance (d2), thereby increasing the damping force of the damper (65) from the beginning of damping, thereby preventing all of the above phenomena.

[0169] Meanwhile, when the driving roll (80) pushes the catching end (72), so that the catcher (70) rotates relative to the first sliding part (74), and the direction in which the input connection part (76) rotates in the circumferential direction corresponds to the direction in which the input connection part (76) approaches the damping support part (63), the elastic force of the damper (65) acting in the direction in which the input connection part (76) moves away from the damping support part (63) acts together with the damping force of the damper (65), so that the kinetic energy applied simultaneously from the driving roll (80) at the beginning of damping can be absorbed more quickly.

[0170] If the damper (65) only exerts damping force and not elastic force, it will not be able to dissipate all of the kinetic energy initially input as an impact. As a result, the kinetic energy that is not dissipated will be transferred to the guide rail member (50) as is, causing an impact.

[0171] However, if the damping capacity of the damper (65) is further increased to prevent this phenomenon, when the damper (65) dissipates kinetic energy with a large damping force, the speed of the driving roll (80) is drastically reduced, which acts as a large impact on the kinetic energy transfer path from the driving roll (80) to the damper (65).

[0172] In addition, after the damper (65) has completely dissipated the kinetic energy transferred to the impact, the potential energy of the extension bed (16) determined by the height in the first direction of the slope and transferred to the damper (65) through the travel roll (80) becomes excessively small compared to the damping force of the damper (65). Then, the travel roll (80) may move very slowly along the slope or stop altogether.

[0173] According to the embodiment, the elastic force and damping force of the damper (65) work together to absorb and dissipate the shock at the initial stage of the impact. In particular, since the elastic body temporarily stores energy rather than dissipates it, it can quickly store the kinetic energy transmitted at once at the initial stage of the damping and, by elastic deformation, quickly absorb the energy.

[0174] In addition, the elastically deformed elastic body is elastically restored again and quickly releases the kinetic energy that was absorbed and stored, and in the process, the damping force of the damper (65) is applied, so that the shock caused by the damping force of the damper (65) being applied rapidly at the initial stage of the shock can be alleviated.

[0175] Since the guide rail member (50) having the guide surface (51) extended in the second direction is also extended in the second direction, there is no particular difficulty in securing the damping stage (61) space in the second direction. Accordingly, the embodiment discloses a structure in which the damping support member (63) is arranged to be further from the seating end (642) of the damping rail (64) in the second direction than the input connection member (76) so that the input connection member (76) that rotates with respect to the first sliding member (74) comes closer to the damping support member (63) as the catcher (70) changes its posture from the standby posture to the gripping posture.

[0176] Meanwhile, the third distance (d3) between the first sliding member (74) and the input connection member (76) may be set longer than the first distance (d1) between the first sliding member (74) and the second sliding member (75). Then, the distance that the catcher (70) moves in a direction parallel to the travel direction of the travel roll (80) while the catcher (70) rotates relative to the first sliding member (74) so ​​as to take a gripping posture in a standby state can be further limited. Then, the phenomenon in which the circumferential rotation distance of the input connection member (76) with respect to the first sliding member (74) is offset by the distance that the catcher (70) moves in the travel direction while the posture of the catcher (70) is changed can be minimized, thereby allowing the damping force to be applied more greatly in the initial stage of damping.

[0177] Next, the second distance (d2) between the first contact portion (74) and the virtual center (C) of the catching surface (71) can be determined by considering the diameter of the driving roll (80). In addition, the first distance (d1) between the first contact portion (74) and the second contact portion (75) can be determined by considering the second distance (d2).

[0178] For example, the smaller the first distance (d1) is compared to the second distance (d2), the shorter the travel distance that the travel roll (80) moves while pushing the catching end (72) of the catching surface (71) while the catcher (70) rotates from the standby position to the gripping position is. Then, the time available for absorbing the impact is shortened, and the impact force applied to the damping assembly (60) increases accordingly. This may cause the vulnerable part of the damping assembly (60) to be damaged. Therefore, it is preferable that the first distance (d1) be set to at least 0.5 times or more of the second distance (d2).

[0179] Conversely, the longer the first distance (d1) is compared to the second distance (d2), the longer the travel distance that the travel roll (80) moves while pushing the catching end (72) of the catching surface (71) while the catcher (70) rotates from the standby position to the gripping position increases. In addition, since the size of the catcher (70) must be increased accordingly, and the length of the standby travel section (644) and the connecting section (647) of the damping rail (64) must be increased, it is unavoidable that the size of the damping assembly (60) increases. Therefore, it is preferable that the first distance (d1) be set not to exceed 1.5 times the second distance (d2).

[0180] Preferably, the first distance (d1) may be set to 0.8 to 1.1 times the second distance (d2). The embodiment exemplifies that the first distance (d1) is approximately 0.9 times the second distance (d2).

[0181] Referring to FIGS. 18 to 24 below, the operation of the sliding assembly (30) of the embodiment installed on the bed (10) will be described.

[0182] When the user pulls out the extension bed (16) of the bed (10) illustrated in FIG. 1 in the second direction from the main body bed (11) as illustrated in FIG. 9 to use the heater (20), the travel roll (80) located at the other end of the guide rail member (50) having a damping assembly (60) at one end as illustrated in FIG. 14 is guided along the slide travel surface (52) and moves relatively to reach the settling travel surface (53) as illustrated in FIG. 15.

[0183] As sequentially illustrated in FIGS. 18 to 20, the travel roll (80) that has reached the settling travel surface (53) is guided by the settling travel surface (53) and moves relatively along the slope to meet the catching end (72) of the catcher (70) that has been in a standby posture at the standby position. Then, the travel roll (80) pushes the catching end (72) in the travel direction, and accordingly, the first sliding part (74) slides along the settling travel section (641) and the second sliding part (75) travels along the standby travel section (644), so that the catcher (70) moves in the travel direction and also rotates around the first sliding part (74).

[0184] The catcher (70) moves in the driving direction, but the input connection part (76) rotates in the direction opposite to the driving direction of the catcher (70). Since the third distance (d3) from the center of rotation (74) to the input connection part (76) is greater than the first distance (d1) and the second distance (d2), the input connection part (76) moves in a direction closer to the damping support part (63). Accordingly, the gap (G) of the damper (65) is reduced, and the damping force of the damper (65) is applied. In addition, as the gap (G) of the damper (65) is reduced and the damper (65) is elastically compressed, the shock is absorbed.

[0185] While the damping assembly (60) operates from the state illustrated in FIG. 18 to the state illustrated in FIG. 20, the gap (G) of the damper (65) is reduced. Accordingly, most of the kinetic energy possessed by the extension bed (16) while traveling on the slide travel surface (52) is transferred to the damper (65) through the travel roll (80) and the catcher (70). In this process, some of the energy is stored as the gas spring is elastically compressed in the compression direction, and some of the energy is dissipated.

[0186] As illustrated in FIG. 20, when the second contact member (75) approaches the settling travel section (641) and the virtual center (C) of the catching surface (71) approaches the center of the travel roll (80), and the catcher (70) begins to reach a gripping posture, the catcher (70) hardly changes its posture any more, and moves together with the travel roll (80) in a gripping state along the settling travel section (641), as illustrated in FIGS. 21 and 22. Accordingly, the gap (G) of the damper (65) begins to increase again. As the gap (G) of the damper (65) increases, the damping force of the damper (65) continues to act, and the travel roll (80) slowly moves downward along the settling travel surface (53) to reach its final position.

[0187] At this time, as described above, the catcher (70) rotates and is transmitted to the damper (65) and elastically compressed, and the damper (65) is elastically restored in the direction in which its length (G) is extended by the stored elastic energy. Accordingly, the catcher (70) that has entered the gripping posture receives elasticity from the elastic restoring force and moves stably along the driving direction.

[0188] The above damper (65) moves the catcher (70) toward the mounting end (642) through elastic restoring force, while continuously exerting a damping force to prevent the catcher (70) from moving with acceleration.

[0189] As shown in Fig. 22, when the catcher (70) reaches the settling end (642), the catcher (70) is stably placed on the catcher settling portion (68) provided on the damping stage (61), and the catcher settling portion (68) supports the load of the extension bed (16).

[0190] Accordingly, when the extension bed (16) reaches the vicinity of the expansion completion position, damping is evenly performed throughout the entire damping section without an imbalance in which damping occurs abruptly in a specific section.

[0191] The user can lie on the bed (10) with the bed (10) slid and extended in this manner and receive physical treatment such as massage through the physical treatment unit (20).

[0192] After use, the user slides the extension bed (16) back in the opposite direction to the second direction.

[0193] Then, the driving roll (80) rides on the settling running surface (53) together with the catcher (70). When the catcher (70) moves along the damping rail (64) and the second sliding part (75) enters the connecting section (647), the catcher (70) rotates in the opposite direction to the first sliding part (74), so that the gripping posture of the catcher (70) is released and the return end (73) gradually enters below the settling running surface (53).

[0194] Even as the above driving roll (80) goes down to the return end (73), it comes into contact with the return end (73) as shown in Fig. 23 and pushes the return end (73) all the way.

[0195] When the return end (73) is almost lowered below the settling running surface (53), as shown in Fig. 24, the running roll (80) passes over the return end (73) and presses it, thereby reliably moving the second contact part (75) to the waiting end (645).

[0196] Referring to Fig. 24, even after the driving roll (80) leaves the settling driving surface (53), the elastic force of the gas spring (65) applies to the input connection part (76) in a direction away from the damping support part (63). Then, the second sliding part (75) becomes a fulcrum and the first sliding part (74) receives an elastic force toward the sliding driving surface (81), and the catcher (70) stably maintains a standby posture at the standby position by the elastic force of the gas spring (65).

[0197] In order to maintain a stable standby posture, the first distance (d1) between the first contact portion (74) and the second contact portion (75) may be set so that, in the standby position of the catcher (70), the second contact portion (75) is positioned adjacent to the standby end (645) in the standby driving section (644), and the first contact portion (74) is positioned adjacent to the connecting section (647) in the settling driving section (641).

[0198] In addition, the extension direction of the above-mentioned waiting driving section (644) can be set to have a slope such that slipping of the second contact portion (75) does not occur when the elastic force of the damper (65) is applied.

[0199] Meanwhile, the connecting section (647) extending in the shape of an arc can be divided into a reaction section and a compliance section arranged between the reaction section and the settling driving section. When the second contact portion (75) is in the reaction section, the second contact portion (75) functions as a fulcrum of a lever, and accordingly, the elastic force applied by the gas spring (65) to the input connecting section (76) elastically applies the first contact portion (74) in a direction away from the settling end (642).

[0200] Meanwhile, when the second contact member (75) is in the compliance section, the second contact member (75) no longer functions as a fulcrum of a lever, and accordingly, the elastic force applied by the gas spring (65) to the input connection member (76) elastically applies the second contact member (75) in the direction in which the second contact member (75) moves toward the mounting end (642).

[0201] Considering that the tangent direction of the connecting section (647) gets closer to the extension direction of the settling section (641) as it gets closer to the settling section (641), it can be expected that the reaction section and the compliance section can be distinguished by, for example, the frictional force acting between the second sliding member (75) and the side wall of the damping rail (64). As shown in FIGS. 23 and 24, it can be understood that when returning the driving roll (80), the elastic force of the damper (65) must be overcome to push up the driving roll (80) until the second sliding member (75) reaches the reaction section.

[0202] In the embodiment, a structure in which a damping assembly (60) is provided at one end of a sliding assembly (30) is exemplified. However, the present invention is not limited thereto.

[0203] For example, the above damping assembly (60) may be provided at both ends of the sliding assembly (30).

[0204] In addition, the sliding assembly (30) installed on one side of the third direction of the bed (10) may be provided with a damping assembly (60) on one end of the second direction, and the sliding assembly (30) installed on the other side of the third direction of the bed (10) may be provided with a damping assembly (60) on the other end of the second direction.

[0205] In addition, a pair of sliding assemblies (30) are installed on one side of the third direction of the bed (10), and one of them may be equipped with a damping assembly (60) on one side of the second direction, and the other may be equipped with a damping assembly (60) on the other side of the second direction.

[0206] In addition, a pair of sliding assemblies (30) may be installed on one side of the third direction of the bed (10), one of which may have the guide assembly (40) installed on the main body bed (11) and the driving roll (80) installed on the extension bed (16), and the other may have the guide assembly (40) installed on the extension bed (16) and the driving roll (80) installed on the main body bed (11).

[0207] Meanwhile, the embodiment exemplifies that the damper (65) is installed so that the direction in which the input connection part (76) rotates in the circumferential direction corresponds to the direction in which the input connection part (76) moves closer to the damping support part (63) when the driving roll (80) pushes the catching end part (72) so that the catcher (70) rotates relatively to the first sliding part (74). However, it goes without saying that the damper (65) may be installed at a position such that the direction in which the input connection part (76) rotates in the circumferential direction corresponds to the direction in which the input connection part (76) moves away from the damping support part (63). In addition, in response to such deformation, a damper (65) in which an elastic force acts in the direction in which the input connection part (76) approaches the damping support part (63) may be additionally applied. Then, as in the previously described embodiment, the elastic force of the damper (65) can be made to act together with the damping force of the damper (65).

[0208] In addition to this, it is obvious that various modifications according to the present invention are possible.

[0209] It should be understood that the above-described embodiments are illustrative in all respects and not restrictive, and the scope of the present invention will be determined by the claims that follow, rather than by the detailed description set forth above. Furthermore, the meaning and scope of the claims that follow, as well as all possible modifications and variations derived from their equivalent concepts, should be construed as encompassing the scope of the present invention.

[0210] Although the present invention has been described with reference to the drawings exemplified above, it is to be understood that the present invention is not limited to the embodiments and drawings disclosed herein, and that various modifications may be made by those skilled in the art within the scope of the technical idea of ​​the present invention. Furthermore, even if the operational effects according to the configuration of the present invention have not been explicitly described while describing the embodiments of the present invention, it is natural that the effects predictable by the corresponding configuration should also be acknowledged.

Claims

1. A damping assembly that provides damping force to a runner moving relatively toward a settling position. damping stage; A damping rail provided on the above damping stage and positioned adjacent to the running trajectory of the runner; A catcher moving under the guidance of the above damping rail; and A damper having one end rotatably connected to an input connection of the catcher and the other end rotatably connected to a damping support of the damping stage; The above damping rail includes a first section in which the catcher rotates and moves, and a second section disposed between the first section and the settling position and in which the catcher moves parallel to the runner. A damping assembly wherein the above damper provides a damping force while the gap between the input connection portion and the damping support portion changes.

2. In claim 1, as the catcher rotates while moving toward the second section, the gap gradually narrows in at least a portion of the first section, A damping assembly wherein the gap gradually widens as the catcher moves toward the settling position in the second section.

3. A damping assembly according to claim 1, wherein the damper provides elastic force in a direction in which the input connection part moves away from the damping support part.

4. In claim 3, the damper is a damping assembly including a gas spring having a first damping member and a second damping member that slide relative to each other along the longitudinal direction.

5. A damping assembly according to claim 1, wherein a distance from the mounting position to the damping support is longer than a distance from the mounting position to the input connection.

6. A damping assembly according to claim 5, wherein the input connection part is disposed between the damping support part and the seating position.

7. A damping assembly according to claim 1, wherein a distance from the mounting position to the damper is longer than a distance from the mounting position to the catcher.

8. A damping assembly according to claim 7, wherein the catcher is disposed between the damper and the seating position.

9. In claim 1, the catcher is positioned in a standby position without contacting the runner, A damping assembly, wherein the first section is positioned between the above-described waiting position and the second section.

10. A damping assembly according to claim 1, wherein the catcher is positioned at the settling position when the runner has reached the settling position.

11. In claim 1, the damping rail: A connecting section that approaches the movement trajectory of the runner as it extends toward the above-mentioned settling position; and A damping assembly, comprising: a settling travel section disposed between the connecting section and the settling position, and extending parallel to the movement trajectory of the runner as it extends toward the settling position.

12. A damping assembly according to claim 11, wherein the connecting section extends in a smooth curved shape.

13. A damping assembly according to claim 11, wherein the damping rail further includes a waiting travel section that is connected to the connecting section and approaches the movement trajectory of the runner as it extends toward the settling position.

14. In claim 11, the catcher has a first contact portion that moves in contact with the damping rail in the settling travel section, A damping assembly in which the first contact member moves parallel to the runner while the catcher moves through the first and second sections.

15. In claim 14, the catcher further includes a second engaging portion that is positioned a predetermined distance apart from the first engaging portion and moves in contact with the damping rail. While the catcher moves in the first section, the second contact member moves in the connecting section of the damping rail, A damping assembly in which, while the catcher moves in the second section, the second contact member moves in parallel with the runner in the settling travel section of the damping rail.

16. A damping assembly according to claim 15, wherein the distance between the first contact portion and the input connection portion is longer than the distance between the first contact portion and the second contact portion.

17. A damping assembly according to claim 15, wherein the second contact member is disposed between the first contact member and the input connection member.

18. In claim 17, the damper provides elasticity to the input connection, The above connecting section includes a reaction section and a compliance section arranged between the reaction section and the settling driving section, In a state where the second contact part is located in the reaction section, the second contact part becomes a fulcrum for the elastic force, and the first contact part is elastically applied in a direction away from the seating position. A damping assembly, wherein the elastic force applies elasticity to the second joint in a direction toward the seating position while the second joint is positioned in the compliance section.

19. In claim 1, the catcher has a catching surface that catches the runner in the second section, A damping assembly, wherein the distance between the rotation center of the catcher and the input connection is longer than the distance between the rotation center and the virtual center of the catching surface.

20. A bed having a damping assembly according to any one of claims 1 to 19, wherein the bed comprises: A main body bed having the above damping assembly installed; and A bed comprising an extension bed on which the runner is installed and moves relative to the main body bed to expand or contract the bed;

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