Posture fixing module

Abstract

A fixing mechanism according to an embodiment of the present disclosure is configured to selectively fix a movable member which is movably connected to a base member to the base member. The fixing mechanism comprises: a moving block disposed beneath the base member; a latching protrusion mounted on the moving block to be elastically supported, the latching protrusion protruding downward from the lower surface of the moving block; a shaft screw-coupled to the moving block, the shaft including a flange located beneath the moving block so as to define a groove part in which the latching protrusion is accommodated; and an operation knob coupled to one end of the shaft. The moving block moves upward according to the rotation of the operation knob in the locking direction, thereby fixing the movable member to the base member, and moves downward according to the rotation of the operation knob in the releasing direction, thereby allowing the movable member to move with respect to the base member. If moving block approaches the flange at a predetermined interval or less according to the rotation of the operation knob in the releasing direction, the latching protrusion is accommodated in the groove portion, thereby limiting the rotation of the operation knob in the releasing direction.

Description

Posture fixing module

[0001] The present disclosure relates to a posture fixing module.

[0002] A device for fixing the patient's posture may be used. Such a posture fixation device or module can firmly fix a part of the patient's body.

[0003] Some embodiments of the present disclosure may provide, for example, a posture fixing module.

[0004] A fixing mechanism configured to selectively fix a movable member, which is movably connected to a base member according to one embodiment of the present disclosure, may include: a movable block disposed on the lower side of the base member; a locking projection mounted to be elastically supported on the movable block and protruding downward from the lower surface of the movable block; a shaft screw-coupled to the movable block, comprising a flange located on the lower side of the movable block and defining a groove portion into which the locking projection is received; and an operating knob coupled to one end of the shaft. The movable block may fix the movable member to the base member by moving upward according to the rotation of the operating knob in the locking direction, and allow movement of the movable member relative to the base member by moving downward according to the rotation of the operating knob in the unlocking direction. When the movable block approaches the flange to a distance less than a predetermined gap according to the rotation of the operating knob in the unlocking direction, the locking projection is received in the groove portion, thereby restricting the rotation of the operating knob in the unlocking direction.

[0005] In one embodiment, the locking projection is pressed downward by an elastic member, and detachment from the movable block can be prevented by a restraining member coupled to the movable block.

[0006] In one embodiment, the groove may be defined by a bottom surface recessed downward from the upper surface of the flange and an inner wall surface extending from the bottom surface to the upper surface of the flange.

[0007] In one embodiment, the inner wall surface includes a first inner wall surface facing the unwinding direction, and the upper surface of the flange adjacent to the first inner wall surface may define a first locking projection. When the operating knob rotates in the unwinding direction while the movable block is received in the groove, the locking projection may engage with the first locking projection.

[0008] In one embodiment, the catch projection includes a first interference surface that engages with the first catch projection, and the first inner wall surface and the first interference surface may be vertical surfaces.

[0009] In one embodiment, the inner wall surface includes a second inner wall surface facing the locking direction, and the locking projection may include a second interference surface facing the second inner wall surface in the locking direction when received in the groove. At least one of the second interference surface and the second inner wall surface is formed as an inclined surface, so that when the operating knob is rotated in the locking direction, the inclined surface presses the locking projection upward to disengage it from the groove.

[0010] In one embodiment, a pair of guide pins are coupled to the movable block, and the guide pins are inserted into guide holes formed in the base member to guide the linear movement of the movable block.

[0011] In one embodiment, the elastic member may be a coil spring.

[0012] In one embodiment, the restraining member includes a head portion and a screw portion, is coupled to the movable block through the screw portion, and a part of the head portion may overlap a part of the locking projection in the vertical direction.

[0013] In one embodiment, the movable block may include a projection receiving portion configured to accommodate the locking projection and allow vertical movement of the locking projection. When the movable block descends, the locking projection retracts into the interior of the projection receiving portion when it contacts the upper surface of the flange, and when the locking projection is positioned on the groove portion, the locking projection may enter the interior of the groove portion by means of the restoring force of the elastic member.

[0014] According to one embodiment of the present disclosure, a posture fixing module mounted on a bed may include a pair of supports mounted on the bed; and a beam extending in the width direction of the bed, with both ends supported by the pair of supports respectively and capable of sliding in the width direction relative to the supports. The pair of supports are base members and the beam is a movable member, and the movable member may be fixed to the base member by the fixing mechanism.

[0015] According to one embodiment of the present disclosure, a posture fixing module mounted on a bed may include a beam mounted on the bed and extending in the width direction of the bed; and a slider mounted to the beam so as to be slidably mounted in the width direction. The beam is a base member and the slider is a movable member, and the movable member may be fixed to the base member by the fixing mechanism.

[0016] According to some embodiments of the present disclosure, for example, a posture fixing module may be provided.

[0017] FIG. 1 illustrates a posture fixing module mounted on a bed in one embodiment.

[0018] FIG. 2a illustrates a state in which a posture fixing module fixes the head of a patient lying facing the ceiling in one embodiment.

[0019] FIG. 2b illustrates a state in which a posture fixing module fixes the head of a patient lying on their side in one embodiment.

[0020] FIG. 3 is a perspective view of a posture fixing module according to one embodiment.

[0021] FIG. 4 is a perspective view of a posture fixing module with the shoulder support removed according to one embodiment.

[0022] FIG. 5 is a rear perspective view of a posture fixing module according to one embodiment.

[0023] FIG. 6 is a top view of a posture fixing module according to one embodiment.

[0024] FIG. 7 is a side view of a posture fixing module according to one embodiment.

[0025] FIG. 8 is a cross-sectional perspective view taken along line II' of FIG. 3.

[0026] FIG. 9 illustrates the lower part of the support in one embodiment.

[0027] FIG. 10 is an exploded perspective view of the lower part of a support according to one embodiment.

[0028] FIG. 11 illustrates a component coupled to the back surface of a third movable block in one embodiment.

[0029] FIG. 12 illustrates a state in which a locking projection is positioned on a groove portion of a flange in one embodiment.

[0030] FIG. 13 is a cross-sectional view taken along the line II-II' of FIG. 9, showing the state in which the locking projection is spaced upward from the flange.

[0031] FIG. 14 is a cross-sectional view taken along the line II-II' of FIG. 9, showing the state in which the locking projection is inserted into the groove of the flange.

[0032] Figure 15 illustrates the relative circumferential movement between the locking projection and the flange in a linear fashion.

[0033] FIG. 16 illustrates a slider mounted on a beam in one embodiment.

[0034] FIG. 17 is an exploded perspective view of a slider according to one embodiment.

[0035] FIG. 18 is a cross-sectional perspective view taken along the line III-III' of FIG. 16.

[0036] FIG. 19 is an exploded perspective view of a slider and a bar according to one embodiment.

[0037] FIG. 20 is a cross-sectional perspective view taken along the line IV-IV' of FIG. 16.

[0038] FIG. 21 is a cross-sectional view illustrating the state in which the fixation between the slider and the bar is released.

[0039] FIG. 22 is a cross-sectional view illustrating the state in which the slider and the bar are fixed to each other.

[0040] FIG. 23 illustrates a post and neck connected to a bar in one embodiment.

[0041] FIG. 24 is an exploded view of a post according to one embodiment.

[0042] FIG. 25 is a cross-sectional view illustrating the state in which the fixation between the bar and the post is released in one embodiment.

[0043] FIG. 26 is a cross-sectional view illustrating a state in which a bar and a post are fixed to each other in one embodiment.

[0044] FIG. 27 is an exploded perspective view of a post and a neck according to one embodiment.

[0045] FIG. 28 is a cross-sectional perspective view taken along the VI-VI' line of FIG. 23.

[0046] FIG. 29 is a cross-sectional perspective view taken along the line VII-VII' of FIG. 23.

[0047] FIG. 30 is a cross-sectional view illustrating the state in which the fixation between the post and the neck is released in one embodiment.

[0048] FIG. 31 illustrates a state in which the gear block and the moving block are spaced apart from each other in one embodiment.

[0049] FIG. 32 is a cross-sectional view illustrating the state in which the post and the neck are fixed to each other in one embodiment.

[0050] FIG. 33 illustrates the state in which the gear block and the moving block are engaged with each other in one embodiment.

[0051] FIG. 34 illustrates a stopper mounted on a bracket of a neck in one embodiment.

[0052] FIG. 35 is a cross-sectional view taken along the line VIII-VIII' of FIG. 34.

[0053] The embodiments of the present disclosure are illustrative for the purpose of explaining the technical concept of the present disclosure. The scope of rights according to the present disclosure is not limited to the embodiments presented below or the specific description thereof.

[0054] All technical and scientific terms used in this disclosure, unless otherwise defined, have the meaning generally understood by those skilled in the art to which this disclosure pertains. All terms used in this disclosure are selected for the purpose of further clarifying this disclosure and are not selected to limit the scope of the rights under this disclosure.

[0055] Expressions such as “comprising,” “comprising,” “having,” etc. used in this disclosure should be understood as open-ended terms implying the possibility of including other embodiments, unless otherwise stated in the phrase or sentence containing such expressions.

[0056] Unless otherwise stated, singular expressions described in this disclosure may include a plural meaning, and this applies likewise to singular expressions described in the claims.

[0057] Expressions such as "first," "second," etc. used in this disclosure are used to distinguish multiple components from one another and do not limit the order or importance of said components.

[0058] In the present disclosure, where it is stated that a component is "connected" or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, or connected or connected through a new component.

[0059] Embodiments of the present disclosure will be described below with reference to the attached drawings. In the attached drawings, identical or corresponding components are given the same reference numerals. Furthermore, in the description of the embodiments below, the description of identical or corresponding components may be omitted. However, even if a description of a component is omitted, it is not intended that such component is not included in any embodiment.

[0060] [Posture Fixation Module]

[0061] FIG. 1 illustrates a posture fixing module (1) mounted on a bed (10) in one embodiment. FIG. 2a illustrates a state in which the posture fixing module (1) fixes the head of a patient lying facing the ceiling. FIG. 2b illustrates a state in which the posture fixing module (1) fixes the head of a patient lying facing the side. FIG. 3 is a perspective view of a posture fixing module (1) according to one embodiment. FIG. 4 is a perspective view of a posture fixing module (1) with the shoulder support removed according to one embodiment. FIG. 5 is a rear perspective view of a posture fixing module (1) according to one embodiment. FIG. 6 is a top view of a posture fixing module (1) according to one embodiment. FIG. 7 is a side view of a posture fixing module (1) according to one embodiment.

[0062] Referring to FIGS. 1 and 2, a posture fixing module (1) can be mounted on a bed (10) to fix the posture of a patient on the bed (10). Specifically, the posture fixing module (1) can fix the posture of the patient's head relative to the bed (10) (position of the head and direction in which the face is facing). For example, referring to FIGS. 2a and 2b, the posture fixing module (1) can maintain the patient's face facing the ceiling or the patient's face facing the side.

[0063] Referring to FIGS. 1 through 7, the posture fixing module (1) includes a pair of supports (100), a beam (200), a slider (300), a bar (400), a post (500), a neck (600), and a head frame (700). The posture fixing module (1) may further include a shoulder support (800). Through the shoulder support (800), the patient's shoulder area can be supported beyond the end of the bed (10). The posture fixing module (1) is mounted to the bed (10) via the supports (100), and the patient's head is fixed to the head frame (700). The position of the head frame (700) can be flexibly adjusted through movement between the various components (a pair of supports (100), a beam (200), a slider (300), a bar (400), a post (500), and a neck (600)) connecting the bed (10) and the head frame (700).

[0064] Referring to FIG. 1, the bed (10) is provided with rails (12) extending along the longitudinal direction (Y-axis direction) of the bed (10) on both sides. A pair of supports (100) are each mounted on the rails (12) on both sides of the bed (10) and are slidable along the longitudinal direction of the bed (10). After the position of the supports (100) relative to the rails (12) is determined, the first knob (119) can be rotated to fix the supports (100) to the rails (12). Each support (100) extends downward from the bed (10) to support a beam (200).

[0065] The shoulder support (800) is mounted on the support (100) and positioned outside the longitudinal end of the bed (10). After the position of the shoulder support (800) relative to the support (100) is determined, the second knob (155) can be rotated to fix the shoulder support (800) to the support (100).

[0066] Referring to FIGS. 4 through 7, a pair of supports (100) have translational degrees of freedom (P1) in the width direction (X-axis direction) of the bed with respect to the beam (200). A pair of supports (100) are slidably coupled to the beam (200) in the X-axis direction. Through this structure, the posture fixing module (1) is compatible with beds (10) having various widths. After the relative position between the supports (100) and the beam (200) is determined, the supports (100) and the beam (200) can be fixed to each other by rotating a third knob (130) provided at the bottom of the supports (100).

[0067] The slider (300) has a translational degree of freedom (P2) in the width direction (X-axis direction) of the bed (10) with respect to the beam (200). The slider (300) is mounted so as to be slidable in the X-axis direction on the beam (200). After the position of the slider (300) with respect to the beam (200) is determined, the slider (300) can be fixed to the beam (200) by rotating the fourth knob (310) provided at the bottom of the slider (300).

[0068] The bar (400) is capable of two degrees of freedom (R1, P3) of movement relative to the slider (300). First, the bar (400) has a rotational degree of freedom (R1) with respect to the slider (300) with respect to the vertical axis (Z-axis) as the axis of rotation, and second, it has a translational degree of freedom (P3) in the longitudinal direction of the bar (400) relative to the slider (300). After the position and rotation angle of the bar (400) relative to the slider (300) are determined, the bar (400) can be fixed to the slider (300) by rotating the fifth knob (430) provided at the bottom of the slider (300).

[0069] The post (500) has a translational degree of freedom (P3) in a vertical direction (Z-axis direction) relative to the bar (400). The post (500) is mounted on the bar (400) so as to be movable in the Z-axis direction. The post (500) serves to position the neck (600) at an appropriate height. After the vertical position of the post (500) relative to the bar (400) is determined, the post (500) can be fixed to the bar (400) by rotating the sixth knob (440) provided on the side of the bar (400).

[0070] The neck (600) is capable of two degrees of freedom (R2, R3) of movement relative to the post (500). First, the neck (600) has a rotational degree of freedom (R2) with the pitch axis (PA) parallel to the width direction (X-axis direction) of the bed (10) as the axis of rotation, and second, has a rotational degree of freedom (R3) with the yaw axis (YA) in the vertical direction (Z-axis direction) as the axis of rotation. After the pitch angle and yaw angle of the neck (600) relative to the post (500) are determined, the neck (600) can be fixed to the post (500) by rotating the seventh knob (650) provided on the neck (600).

[0071] Referring to FIGS. 1 to 2b, the head frame (700) is provided in the form of a circular ring extending circumferentially around the head axis. The head frame (700) is mounted rotatably about the head axis (HA) with respect to the neck (600). Through this structure, the patient's head can be fixed at various angles. After the rotation angle of the head frame (700) with respect to the neck (600) is determined, the head frame (700) can be fixed to the neck (600) by rotating a second knob (155) provided on one side of the neck (600).

[0072] The position and orientation (direction in which the head axis is facing) of the head frame (700) relative to the bed (10) can be varied by adjusting the relative position or relative angle between each component constituting the posture fixing module (1). As such, the posture fixing module (1) of the present disclosure provides flexibility to respond to various physical conditions and surgical requirements of the patient through a multi-stage multi-degree-of-freedom adjustment mechanism.

[0073] [Relative position adjustment and fixation of rail-support]

[0074] FIG. 8 is a cross-sectional perspective view taken along line II' of FIG. 3. Referring to FIG. 8, the support (100) can be fixed to the rail (12) through a clamping action between the first movable block (115) and the first fixed block (110). The rail (12) is positioned between the first movable block (115) and the first fixed block (110), the first fixed block (110) is fixed to the body (101) of the support (100), and the first movable block (115) is configured to be movable in the up and down direction relative to the first fixed block (110). The first movable block (115) is screw-coupled to the first shaft (120), and a first knob (119) is coupled to one end of the first shaft (120) as an operating part for the rotational movement of the first shaft (120).

[0075] A first shaft (120) is integrally formed or coupled to the first knob (119). A screw hole (121) is provided in the central part of the first moving block (115), having a female screw thread corresponding to the screw thread of the first shaft (120). When the first knob (119) is rotated in one direction, the first moving block (115) rises due to the screw action of the first shaft (120). Referring to FIG. 5, the first moving block (115) is partially received in a guide groove (118) that extends in the vertical direction formed in the body (101), and the guide groove (118) is configured to restrict the movement of the first moving block (115) in the vertical direction. When the first knob (119) is rotated in one direction, the gap between the first moving block (115) and the first fixed block (110) is reduced, thereby clamping the rail (12) placed between them, and accordingly, the support (100) is fixed to the rail (12).

[0076] [Support - Relative posture adjustment and fixation of shoulder support]

[0077] Referring to FIGS. 3 and 4, the shoulder support (800) includes a base portion (810) and a fixing bar (820). The fixing bar (820) extends from the base portion (810) in the longitudinal direction of the bed (10). The fixing bar (820) is slidably mounted on the support (100). A groove (151) is formed on the side of the support (100) to accommodate the fixing bar (820). The position of the shoulder support (800) relative to the bed (10) is adjusted by sliding the fixing bar (820) within the groove (151) of the support (100).

[0078] Referring to FIG. 8, the shoulder support (800) can be fixed to the support (100) through a clamping action between the second movable block (157) and the groove (151). A fixing bar (820) is positioned between the second movable block (157) and the groove (151), and the second movable block (157) is positioned to be movable in the left-right direction (X-axis direction) on the support (100). The second shaft (158) penetrates the second movable block (157), and a screw portion (158a) with a screw thread is formed at the end. The screw portion (158a) is screw-coupled to a screw hole (103) fixedly provided in the support (100). A second knob (155) is coupled to one end of the second shaft (158) as an operating part for the rotational movement of the second shaft (158).

[0079] When the second shaft (158) rotates, the second shaft (158) moves in the left and right directions due to the interaction between the screw portion (158a) and the screw hole (103), and the second knob (155) also moves together. When the second knob (155) moves toward the second moving block (157), the second knob (155) pushes the second moving block (157) toward the groove (151), thereby fixing the fixing bar (820) positioned between the second moving block (157) and the groove (151) to the support (100).

[0080] [Relative position adjustment and fixation of the support beam]

[0081] FIG. 9 illustrates the lower part of the support (100) in one embodiment. FIG. 10 is an exploded perspective view of the lower part of the support (100) according to one embodiment. FIG. 11 illustrates a component coupled to the back surface of the third movable block (135) in one embodiment.

[0082] Referring to FIG. 9, the end of the beam (200) is inserted into a widthwise open hole (102) formed in the lower part of the support (100). The beam (200) includes a step (210) on its surface, and the step (210) limits the range of movement of the support (100) in the inner direction. The step (210) can be defined by the boundary between the edge (212) and the chamfer (213) of the beam (200). The beam (200) is provided with a pin (211) to prevent the support (100) from moving away from the beam (200). That is, the support (100) can slide along the beam (200) in the section between the pin (211) and the step (210).

[0083] Referring to FIGS. 10 and 11, the support (100) is fixed to the beam (200) through a clamping action between the third movable block (135) and the inner surface of the hole (102). The third movable block (135) is positioned at the bottom of the hole (102) and can push the beam (200) inserted into the hole (102) upward. A screw hole (140) is provided in the central part of the third movable block (135), having a female screw formed therein corresponding to the screw portion (139a) of the third shaft (139). The third movable block (135) is screw-coupled to the third shaft (139), and a third knob (130) is coupled to one end of the third shaft (139) as an operating part for the rotational movement of the third shaft (139).

[0084] When the third knob (130) is rotated in one direction, the third moving block (135) rises due to the screw action occurring between the screw portion (139a) of the third shaft (139) and the screw hole (140) of the third moving block (135). As the third moving block (135) rises, it pushes the beam (200) upward, and accordingly, the beam (200) is tightly fitted into the hole (102).

[0085] A pair of guide pins (137) are coupled to the third moving block (135), each positioned on both sides of the screw hole (140). The guide pins (137) extend in the vertical direction and are inserted into vertical guide holes (138) formed in the lower part of the support (100). The guide pins (137) move vertically along the guide holes (138), which guide the vertical movement of the third moving block (135). It is also possible to provide only one of the pair of guide pins (137).

[0086] [3rd knob's knob stick prevention structure]

[0087] FIG. 12 illustrates a state in which a locking projection (141) is positioned on a groove (144) of a flange (143) in one embodiment. FIG. 13 is a cross-sectional view taken along the line II-II' of FIG. 9, showing a state in which the locking projection (141) is spaced upward from the flange (143). FIG. 14 is a cross-sectional view taken along the line II-II' of FIG. 9, showing a state in which the locking projection (141) is inserted into the groove (144) of the flange (143). FIG. 15 illustrates the relative circumferential movement between the locking projection (141) and the flange (143) in a linear fashion.

[0088] The user can lower the third moving block (135) by rotating the third knob (130) in the release direction. However, if the user attempts to rotate the third knob (130) further in the release direction even after the third moving block (135) has been lowered to the lower limit, excessive stress is applied between the third moving block (135), the third shaft (139), and the third knob (130). This may cause damage to these parts. Therefore, a structure is required to prevent the user from rotating the third knob (130) beyond a certain limit.

[0089] Referring to FIGS. 10 and 11, excessive rotation in the loosening direction of the third knob (130) can be prevented through the interaction between the locking projection (141) provided on the third moving block (135) and the flange (143) provided on the third shaft (139). The locking projection (141) is elastically supported by an elastic member (142). The elastic member (142) provides a downward elastic force to the locking projection (141). The elastic member (142) may be provided in the form of a coil spring. A restraining member (145) is provided on the third moving block (135) to prevent the locking projection (141) from moving downward from the third moving block (135). Referring to FIG. 13, the restraining member (145) includes a head portion (145a) and a screw portion (145b), and is coupled to the third moving block (135) through the screw portion. A portion of the head portion (145a) is positioned to overlap vertically with a portion of the locking projection (141).

[0090] The third shaft (139) includes a flange (143). Referring to FIG. 12, the flange (143) defines a groove (144) into which a locking projection (141) can be received. The groove (144) is recessed downward from the upper surface (143a) of the flange (143). The groove (144) is defined by a bottom surface (144a) and an inner wall surface (144b) extending from the bottom surface (144a) to the upper surface of the flange (143). The inner wall surface (144b) includes a first inner wall surface (144c) facing the release direction (RD) and a second inner wall surface (144d) facing the locking direction (LD). The first inner wall surface (144c) and the upper surface of the flange (143) adjacent to the first inner wall surface define a first locking projection (144e). The groove (144) may be provided at one or more locations in the circumferential direction around the axis of rotation of the third shaft (139).

[0091] Referring to FIGS. 12 through 15, when the third knob (130) is rotated in the release direction (RD), the third moving block (135) descends and the locking projection (141) approaches the flange (143) (i.e., changes from the state in FIG. 13 to the state in FIG. 14). When the third moving block (135) descends below a certain height, a portion of the locking projection (141) is received in the groove (144) of the flange (143). In this case, even if the third knob (130) is rotated further in the release direction (RD), the third knob (130) can no longer be rotated further in the release direction (RD) because the locking projection (141) is caught on the first locking projection (144e) of the groove (144).

[0092] Referring to FIG. 15, as the locking projection (141) descends, it comes into contact with the upper surface (143a) of the flange (143). As the locking projection (141) descends further, it retracts toward the projection receiving portion (146). Subsequently, as the locking projection (141) descends further and is positioned on the groove portion (144), the locking projection (141) comes out of the projection receiving portion (146) again due to the restoring force of the elastic member (142), and the end of the locking projection (141) is positioned inside the groove portion (144). The locking projection (141) that enters the groove (144) catches on the first locking projection (144e) positioned on one side of the groove (144), so it cannot exit the groove (144) beyond the first locking projection (144e), thereby restricting the rotation of the third knob (130) in the release direction (RD).

[0093] Referring to FIGS. 11, 12 and 15, the locking projection (141) includes a first interference surface (141a) that engages with the first locking projection (144e). When the locking projection (141) is positioned in the groove (144), the first interference surface (141a) faces the first inner wall surface (144c) in the circumferential direction. After the locking projection (141) is positioned in the groove (144), when the flange (143) rotates in the unwinding direction (RD), the first inner wall surface (144c) interferes with the first interference surface (141a). The rotation of the flange (143), and furthermore the third knob (130), in the unwinding direction (RD) is restricted by the interference between the first inner wall surface (144c) and the first interference surface (141a). The first inner wall surface (144c) and the first interference surface (141a) are formed as vertical surfaces, so that they can provide strong resistance when in contact with each other in a horizontal direction.

[0094] Referring to FIGS. 12 to 14, when the third knob (130) is rotated in the locking direction (LD) after the locking projection (141) is inserted into the groove (144), the third moving block (135) and the locking projection (141) rise (i.e., change from the state of FIG. 14 to the state of FIG. 13).

[0095] Referring to FIG. 15, the locking projection (141) can retract into the inside of the projection receiving portion (146) when passing the second locking projection (144f) in the locking direction, and thus can exit the groove portion (144). Referring to FIG. 11, FIG. 12 and FIG. 15, the locking projection (141) includes a second interference surface (141b) on the opposite side of the first interference surface (141a). The second interference surface (141b) faces the second inner wall surface (144d) in the circumferential direction when the locking projection (141) is positioned in the groove portion (144). The second interference surface (141b) may be provided as an inclined surface. Accordingly, when the stopper (141) passes the second stopper (144f) defined by the upper surface (143a) and the second inner wall surface (144d), the second stopper (144f) can push the stopper (141) upward. In another embodiment, the second interference surface (141b) may be formed as a vertical surface, and the second inner wall surface (144d) may be provided as an inclined surface. In yet another embodiment, both the second interference surface (141b) and the second inner wall surface (144d) may be provided as inclined surfaces.

[0096] The stop prevention structure of the present disclosure physically blocks excessive rotation of the third knob (130) by selectively receiving a stop projection (141), which is elastically supported by the third movable block (135), into a groove (144) formed in the flange (143) of the third shaft (139). This structure provides a reliable limiting effect due to shape interference rather than simple frictional force, and at the same time does not impair operability within the normal operating range.

[0097] Additionally, the above-mentioned anti-stuck structure is configured to allow the third knob (130) to be rotated in the locking direction (LD) even when the locking projection (141) is received in the groove (144). This is achieved by forming the second interference surface (141b) of the locking projection (141) and / or the second inner wall surface (144d) of the groove (144) as an inclined surface, thereby allowing the user to be protected from excessive loosening without hindering normal locking operations.

[0098] The fixing mechanism having a knob-stuck prevention function between the support (100) and the beam (200) described above can be used as a fixing mechanism between a base member and a movable member that move relative to each other, as well as between the support (100) and the beam (200) applied to the posture fixing module (1) shown in the present disclosure. In other words, the fixing mechanism of the present disclosure can be used to selectively fix a movable member that is movably connected to a base member to the base member.

[0099] [Relative attitude adjustment and fixation of beam slider]

[0100] FIG. 16 illustrates a slider (300) mounted on a beam (200) in one embodiment. FIG. 17 is an exploded perspective view of the slider (300) according to one embodiment. FIG. 18 is a cross-sectional perspective view taken along the line III-III' of FIG. 16.

[0101] Referring to FIGS. 16 and 17, the slider (300) includes a hole (302) through which the beam (200) passes. A pad (303) is mounted on the inner surface of the hole (302).

[0102] The slider (300) is fixed to the beam (200) through a clamping action between the fourth movable block (315) and the pad (303). The fourth movable block (315) is positioned to be movable in the vertical direction at the bottom of the hole (302), and the movable pad (316) is fixed to or detachably coupled to the fourth movable block (315) and moves vertically together with the fourth movable block (315). The fourth movable block (315) is screw-coupled to the fourth shaft (319). The screw portion (319a) of the fourth shaft (319) is screw-coupled to the screw hole (315a) of the fourth movable block (315). A fourth knob (310) is coupled to one end of the fourth shaft (319) as an operating part for the rotational movement of the fourth shaft (319). A pair of guide pins (137) are coupled to the fourth moving block (315), each positioned on both sides of the screw hole (140), and the guide pins (137) are inserted into guide holes (305) formed in the slider (300).

[0103] The contact surface (316a) of the moving pad (316) with respect to the beam (200) can be formed as an inclined surface. When the moving pad (316) is raised by the rotation of the fourth knob (310), the contact surface (316a) of the moving pad (316) presses against the inclined surface (200a) of the beam (200). This provides the effect of pushing the beam (200) in the vertical direction (Z-axis direction) and the horizontal direction (X-axis direction), which increases the frictional force between the beam (200) and the pad (303) and allows the slider (300) to be firmly fixed to the beam (200).

[0104] [4th Knob Stuck Prevention Structure]

[0105] The knob-stuck prevention structure for the fourth knob (310) can be configured in the same way as the knob-stuck prevention structure for the third knob (130). A locking projection (322) is mounted on the fourth moving block (315), which is elastically supported by an elastic member (323). The locking projection (322) is prevented from coming off by a restraining member (326). A flange (324) formed on the fourth shaft (319) includes a groove (325), and when the fourth knob (310) is rotated beyond a certain limit in the unwinding direction, the locking projection (322) is inserted into the groove (325). A locking projection formed on one side of the groove (325) interferes with the locking projection (322) and prevents the fourth knob (310) from rotating in the unwinding direction. The interaction between the stopper (322) and the flange (324) is the same as the interaction between the stopper (141) and the flange (143) described in FIGS. 13 to 15, and a detailed description is omitted.

[0106] [Relative posture adjustment and fixation of the slider-bar]

[0107] FIG. 19 is an exploded perspective view of a slider (300) and a bar (400) according to one embodiment. FIG. 20 is a cross-sectional perspective view taken along the line IV-IV' of FIG. 16. FIG. 21 is a cross-sectional view showing the state in which the slider (300) and the bar (400) are released from fixation in one embodiment. FIG. 22 is a cross-sectional view showing the state in which the slider (300) and the bar (400) are fixed to each other in one embodiment.

[0108] Referring to FIGS. 18 to 20, the bar (400) defines a guide groove (412) that extends in the longitudinal direction. A pressure head (337) is mounted in the guide groove (412). The pressure head (337) can slide along the guide groove (412) in the longitudinal direction of the bar (400). A movable shaft (335) is coupled to the lower side of the pressure head (337), and the bar (400) is provided with a slot (401) through which the movable shaft (335) can pass. The pressure head (337) is larger than the slot (401) so that it does not deviate downward through the slot (401).

[0109] The movable shaft (335) is mounted to the slider (300) so as to be rotatable and movable in the up and down direction. The movable shaft (335) is fitted into the shaft hole (338) provided in the slider (300). A bushing (339) is provided in the shaft hole (338), and the bushing (339) holds the movable shaft (335) so that the shaft's rotation axis does not wobble, while allowing the movable shaft (335) to rotate smoothly.

[0110] The movable shaft (335) is screw-coupled to the fifth shaft (431). For example, the screw portion (431a) of the fifth shaft (431) is screw-coupled to the screw hole (335a) formed in the lower part of the movable shaft (335). A fifth knob (430) is coupled to one end of the fifth shaft (431) as an operating part for the rotational operation of the fifth shaft (431). By rotating the fifth knob (430), the fifth shaft (431) can be rotated, and the movable shaft (335) and the pressure head (337) can be moved up and down.

[0111] The bar (400) is pressed downward through the pressure head (337) to fix the bar (400) to the slider (300). When the fifth knob (430) is rotated and the moving shaft (335) descends, the pressure head (337) presses the guide groove (412) of the bar (400) downward. This pressure increases the frictional force between the pressure head (337) and the guide groove (412), which prevents the pressure head (337) from sliding along the guide groove (412). Additionally, the above pressure increases the frictional force acting on the contact surface between the bar (400) and the slider (300), which prevents the bar (400) from moving relative to the slider (300).

[0112] The portion where the pressure head (337) and the guide groove (412) come into contact with each other can be formed as an inclined surface. For example, the lower surface (337a) of the pressure head (337) and the bottom surface (412a) of the guide groove (412) can be provided as inclined surfaces at corresponding angles. This has the effect of increasing the contact area between the pressure head (337) and the guide groove (412), and by increasing the frictional force acting between the pressure head (337) and the guide groove (412), the sliding of the bar (400) against the slider (300) can be effectively suppressed.

[0113] Referring to FIG. 21, when the fifth knob (430) is rotated in the release direction to lift the movable shaft (335), the downward pressure provided by the pressure head (337) to the bar (400) is released, and the bar (400) can be lifted upward from the slider (300). In this state, the position (rotation angle or sliding amount) of the bar (400) relative to the slider (300) can be freely adjusted. Afterward, the position of the bar (400) can be fixed by rotating the fifth knob (430) again in the lock direction.

[0114] Referring to FIGS. 19 through 22, a protrusion (415) extending longitudinally may be mounted on the lower surface of the bar (400). The protrusion (415) may be provided in pairs. A ratchet pattern (330) is provided on the upper surface of the slider (300). The ratchet pattern (330) consists of a plurality of straight grooves. The protrusion (415) may engage with the straight grooves of the ratchet pattern (330). The cross-section of a single straight groove may be provided in a V-shape, and the cross-section of the protrusion (415) may be provided in a shape that fits into the V-shaped groove. For example, the cross-section of the protrusion (415) may be provided in a shape that is pointed downward.

[0115] When the pressure head (337) descends and presses the bar (400) toward the slider (300), the protrusion (415) on the lower surface of the bar (400) engages with the groove of the ratchet pattern (330) on the upper surface of the slider (300), thereby restricting the rotation of the bar (400). As the protrusion (415) is inserted into the groove, a secure angle fixation is achieved through the shape engagement. Additionally, because a strong frictional force acts between the groove of the ratchet pattern (330) and the protrusion (415), sliding of the bar (400) can also be suppressed.

[0116] [Relative posture adjustment and fixation of bar-posts]

[0117] FIG. 23 illustrates a post (500) and a neck (600) connected to a bar (400) in one embodiment. FIG. 24 is an exploded perspective view of the bar (400) and the post (500) according to one embodiment. FIG. 25 is a cross-sectional view illustrating the state in which the fixation between the bar (400) and the post (500) is released in one embodiment. FIG. 26 is a cross-sectional view illustrating the state in which the bar (400) and the post (500) are fixed to each other in one embodiment.

[0118] The post (500) is mounted so as to be movable vertically relative to the bar (400). The post (500) serves to position the neck (600) at an appropriate height.

[0119] Referring to FIGS. 23 and 24, the bar (400) is provided with a post receiving hole (420) into which a post (500) is inserted. The post (500) is movable in the up and down direction within the post receiving hole (420). The post (500) is fixed to the bar (400) through the engagement of the rack gear (or engaging member) (510) and the sixth moving block (445). The rack gear (510) is coupled to the post (500), and the sixth moving block (445) is mounted inside the post receiving hole (420). The sixth moving block (445) is screw-coupled to the sixth shaft (452). The threaded portion (452a) of the sixth shaft (452) is screw-coupled to a threaded hole (445a) formed in the lower part of the sixth moving block (445). A sixth knob (440) is coupled to one end of the sixth shaft (452) as an operating part for the rotational operation of the sixth shaft (452). By rotating the sixth knob (440), the sixth shaft (452) can be rotated, and the sixth moving block (445) can be moved in the left and right direction (X-axis direction).

[0120] The rack gear (510) includes a plurality of teeth arranged in the axial direction (Z-axis direction) of the post (500). The sixth moving block (445) can selectively engage with the rack gear (510) depending on its position inside the post receiving hole (420). A toothed portion (446) configured to engage with the rack gear (510) is formed on the rack gear (510) side surface of the sixth moving block (445).

[0121] Referring to FIGS. 25 and 26, when adjusting the position of the post (500), the sixth knob (440) is rotated in the release direction. The sixth moving block (445) retracts so that the tooth portion (446) disengages from the rack gear (510), and in this state, the post (500) can move up and down relative to the bar (400). After positioning the post (500) at a desired height, the sixth knob (440) is rotated in the lock direction so that the moving block (445) advances and the tooth portion (446) engages with the teeth of the rack gear (510). When the tooth portion (446) of the moving block (445) engages with the rack gear (510), the up and down movement of the post (500) is completely restricted by the shape meshing between the gears. Unlike clamp systems that rely solely on friction, this rack-and-pinion type of fixation provides absolute fixing force through mechanical interference.

[0122] A pair of guide pins (447, 448) are integrally formed or combined with the movable block (445), with the guide pins positioned above and below the screw hole (445a) respectively. The guide pins (447, 448) are inserted into guide holes (449, 450) formed in the bar (400) and guide the movable block (445) to move only in the horizontal direction. When the sixth knob (440) rotates, the rotational force of the sixth shaft (452) is not transmitted to the movable block (445), and only axial linear movement is achieved through screw action. It is also possible to provide only one of the pair of guide pins (447, 448).

[0123] [6th knob's knob stick prevention structure]

[0124] Even if the sixth moving block (445) has moved to the left limit, if the user rotates the sixth knob (440) in the release direction, excessive stress is applied between the sixth moving block (445), the sixth shaft (452), and the sixth knob (440), which may result in damage to these parts.

[0125] Referring to FIGS. 25 and 26, damage to the part can be prevented in a situation where the sixth knob (440) is rotated excessively in the unscrew direction by releasing the screw connection between the sixth moving block (445) and the sixth shaft (452). The sixth shaft (452) defines a threaded portion (452a) and an unthreaded portion (452b) extending from the threaded portion toward the sixth knob (440). The sixth moving block (445) defines a threaded hole (445a) and an unthreaded hole (445b) extending from the threaded hole toward the rack gear (510).

[0126] When the sixth moving block (445) is in contact with or close to the rack gear (510), the threaded portion (452a) engages with the threaded hole (445a). When the sixth moving block (445) retracts more than a predetermined distance from the rack gear (510), the threaded portion (452a) of the sixth shaft (452) disengages from the threaded hole (445a) of the sixth moving block (445), and the screw connection between the sixth shaft (452) and the sixth moving block (445) is released. After the threaded portion (452a) is disengaged from the threaded hole (445a), the threaded portion (452a) is positioned in the non-threaded hole (445b), and the non-threaded portion (452b) is positioned in the threaded hole (445a). The threaded portion (452a) and the non-threaded portion (452b) do not interfere with each other with the non-threaded hole (445b) and the threaded hole (445a), respectively. For example, the non-threaded hole (445b) may have an inner diameter larger than the outer diameter of the threaded portion (452a), and the non-threaded portion (452b) may have an outer diameter smaller than the inner diameter of the threaded hole (445a). In this state, even if the user continues to rotate the sixth knob (440) in the unscrew direction, the threaded portion (452a) rotates freely within the non-threaded hole (445b). Therefore, in this case, since the force of turning the sixth knob (440) is not transmitted to the sixth moving block (445) or the sixth shaft (452), damage to these parts can be prevented.

[0127] An elastic member (454) that provides an elastic force to push the sixth moving block (445) toward the rack gear (510) may be mounted on one side of the sixth moving block (445). The elastic member (454) may be a coil spring fitted onto guide pins (447, 448). The elastic member (454) applies a force toward the rack gear (510) to the moving block (445). When the sixth knob (440) is rotated in the locking direction, the threaded portion (452a) of the sixth shaft (452), which was dislodged from the threaded hole (445a), can be easily engaged into the threaded hole (445a) of the sixth moving block (445) by the restoring force of the elastic member (454).

[0128] The fixing mechanism having a knob-stuck prevention function between the bar (400) and the post (500) described above can be used as a fixing mechanism between the bar (400) and the post (500) applied to the posture fixing module (1) shown in the present disclosure, as well as between a base member and a movable member that move relative to each other. In other words, the fixing mechanism of the present disclosure can be used to selectively fix a movable member that is movably connected to a base member to the base member.

[0129] [Relative posture adjustment and fixation of the post-neck]

[0130] FIG. 27 is an exploded perspective view of a post (500) and a neck (600) according to one embodiment. FIG. 28 is a cross-sectional perspective view taken along the line VI-VI' of FIG. 23. FIG. 29 is a cross-sectional perspective view taken along the line VII-VII' of FIG. 23.

[0131] In the posture fixing module (1) of the present disclosure, the joint between the post (500) and the neck (600) provides two independent rotational degrees of freedom of the neck (600) with respect to the post (500), namely, pitching motion around a horizontal pitch axis (PA) and yawing motion around a vertical yaw axis (YA). In addition, the joint structure is configured to integrally fix the two rotational degrees of freedom (yawing and pitching) using a single operating part (seventh knob (650)).

[0132] Referring to FIGS. 23 and 27, a post head (520) is provided at the top of a post (500). The post head (520) is formed integrally with the post (500) or is coupled to the top of the post (500). A rotation block (620) is mounted on the post head (520) so as to be rotatable about a yaw axis (YA). The rotation block (620) may be provided as two members and may be provided in a form where they are coupled together. An end plate (521) is coupled to the top of the post head (520), which prevents the rotation block (620) from moving upward from the post head (520). A neck (600) is mounted on the rotation block (620), and the neck (600) is rotatable about the rotation block (620) about a pitch axis (PA).

[0133] The neck (600) may include a first bracket (610) and a second bracket (615). The first bracket (610) and the second bracket (615) are respectively positioned on both sides in the X-axis direction of the rotating block (620). The first bracket (610) and the second bracket (615) are coupled to the rotating block (620) through a seventh shaft (651). One end of the seventh shaft (651) is rotatably coupled to the first bracket (610), and the other end is rotatably coupled to the second bracket (615).

[0134] [Yawing Adjustment and Fixing]

[0135] FIG. 30 is a cross-sectional view illustrating a state in which the fixation between the post (500) and the neck (600) is released in one embodiment. FIG. 31 illustrates a state in which the gear block (630) and the movable block (635) are spaced apart from each other in one embodiment. FIG. 32 is a cross-sectional view illustrating a state in which the post (500) and the neck (600) are fixed to each other in one embodiment. FIG. 33 illustrates a state in which the gear block (630) and the movable block (635) are engaged with each other in one embodiment.

[0136] A gear block (or meshing member) (630) is mounted on one side of the post head (520). Referring to FIG. 31, the gear block (630) has a plurality of gear teeth (631) arranged circumferentially around a yaw axis. For example, the gear teeth (631) may be arranged at 5-degree intervals.

[0137] Referring to FIGS. 31 and 33, the seventh moving block (635) includes two protrusions (636a, 636b) that mesh with the gears of the gear block (630). Each of the two protrusions (636a, 636b) may include two projections (638). The projections (638) may have a triangular cross-section.

[0138] The seventh moving block (635) can move in the X-axis direction according to the rotation of the seventh knob (650) and the seventh shaft (651). When the seventh knob (650) is rotated in the locking direction, the seventh moving block (635) engages with the gear block (630). When the seventh moving block (635) approaches the gear block (630), one gear tooth of the gear block (630) is engaged between two protrusions (638). This prevents yawing with respect to the post head (520) of the rotating block (620). When the seventh knob (650) is rotated in the unlocking direction, the seventh moving block (635) can be separated from the gear block (630), and after the engagement between the two is released, the rotating block (620) can freely yawing with respect to the post head (520).

[0139] The seventh moving block (635) engages with the tooth portion of the gear block (630) at two points (F1, F2). Due to the two-point engagement structure, backlash between the gear block (630) and the seventh moving block (635) can be eliminated. This can reliably suppress yawing of the neck (600) when the neck (600) is fixed to the post (500).

[0140] When viewed in the direction in which the yaw axis (YA) extends (Z-axis direction), the two protrusions (636a, 636b) can be symmetrically arranged with respect to a line (L1) passing through the yaw axis (YA), which is the rotation axis of the rotation block (620). For example, the two protrusions (636a, 636b) can be arranged on each side at the same angle in the circumferential direction of the yaw axis (YA) with respect to the line (L1). The angle (A1) formed by the line (L1) and the first protrusion (636a) and the angle (A2) formed by the line (L1) and the second protrusion (636b) are the same. The angles (A1, A2) formed by the line (L1) and the protrusions (636a, 636b) are greater than 0.

[0141] Referring to FIGS. 27 and 28, the rotation block (620) defines a block guide (621) that guides the movement of the gear block (630). The block guide (621) guides the movement in the X-axis direction while blocking the rotation of the gear block (630). The block guide (621) may be provided as a hole having a cross-section corresponding to the gear block (630). For example, the gear block (630) may have a rectangular cross-section when viewed in the X-axis direction, and the block guide (621) may be a rectangular hole.

[0142] [Pitch Adjustment and Fixing]

[0143] A fixed disk (640) is mounted on one side of the rotating block (620). On one side of the fixed disk (640), a plurality of ribs extending radially are arranged in a circumferential direction. A rotating disk (645) positioned opposite to the fixed disk (640) is fixedly coupled to the inside of the second bracket (615). On one side of the rotating disk (645), a plurality of ribs extending radially are arranged in a circumferential direction. When the rotating disk (645) comes into contact with the fixed disk (640), the plurality of ribs of the rotating disk (645) engage with the plurality of ribs of the fixed disk (640), thereby restricting rotational movement between the rotating disk (645) and the fixed disk (640).

[0144] When the 7th knob (650) is rotated in the locking direction, the 7th shaft (651) moves the 7th moving block (635) toward the gear block (630). After the 7th moving block (635) contacts the gear block (630), if the 7th shaft (651) is rotated further in the locking direction, the rotating disk (645) moves toward the fixed disk (640) and engages with the fixed disk (640). This prevents pitching of the neck (600) toward the rotating block (620). When the 7th knob (650) is rotated in the unlocking direction, the rotating disk (645) can be separated from the fixed disk (640), and after the engagement between the two is released, the neck (600) can freely pitch toward the rotating block (620).

[0145] As described above, through the rotation of the seventh knob (650), yawing of the post head (520) of the rotation block (620) and pitching of the neck (600) of the rotation block (620) can be suppressed or allowed at once. This can also be explained by adjusting the gap between the fixed disk (640) and the movable block (635). The fixed disk (640) fixed to the rotation block (620) and the gear block (630) fixed to the post head (520) are positioned between the fixed disk (640) and the movable block (635). When the seventh knob (650) is rotated in the locking direction, the movable block (635) moves toward the fixed disk (640), and the gap between the two is narrowed. The fixed disk (640) and the gear block (630) sandwiched between the two engage with the rotation disk (645) and the movable block (635), respectively. Accordingly, the yawing of the rotating block (620) (neck (600) coupled to the rotating block) and the pitching of the neck (600) are restricted together. Conversely, when the seventh knob (650) is rotated in the loosening direction, the moving block (635) moves away from the fixed disk (640), and the gap between the two widens. The fixed disk (640) and the gear block (630) sandwiched between the two can be separated from the rotating disk (645) and the moving block (635), respectively, which allows the yawing of the rotating block (620) (neck (600) coupled to the rotating block) and the pitching of the neck (600).

[0146] The seventh shaft (651) passes through the through hole (622) of the post head (520). The seventh shaft (651) is yawing about the yaw axis together with the rotation block (620), and the through hole (622) provides sufficient clearance to allow the yawing of the seventh shaft (651). For example, the cross-section of the through hole (622) may be in the shape of a long track in the horizontal direction (Y-axis direction) when viewed in the X-axis direction.

[0147] [7th Knob Stuck Prevention Structure]

[0148] The knob-stuck prevention structure for the 7th knob (650) is similar to the knob-stuck prevention structure for the 6th knob (440). By releasing the screw connection between the 7th moving block (635) and the 7th shaft (651), damage to the part can be prevented in a situation where the 7th knob (650) is rotated excessively in the loosening direction. Referring to FIGS. 30 and 32, the 7th shaft (651) includes a screw portion (652) and a non-screw portion (653) extending from the screw portion (652) toward the 7th moving block (635). When the 7th moving block (635) contacts the gear block (630) or is located close to the gear block (630), the screw hole (637) of the 7th moving block (635) engages with the screw portion (652) ( FIG. 32). When the seventh shaft (651) is rotated in the unwinding direction to retract the seventh moving block (635) from the gear block (630), the screw hole (637) of the seventh moving block (635) comes out of the screw portion (652) of the seventh shaft (651) and is positioned around the non-screw portion (653) (Fig. 30). In this state, the seventh shaft (651) rotates freely in the unwinding direction.

[0149] An elastic member (654) is positioned on one side of the seventh moving block (635) to provide an elastic force that pushes the seventh moving block (635) toward the gear block (630). The elastic member (654) may be a coil spring fitted onto the seventh shaft (651). When the seventh knob (650) is rotated in the locking direction, the threaded portion (652) of the seventh shaft (651), which was disengaged from the screw hole (637), can be easily engaged into the screw hole (637) by the restoring force of the elastic member (454).

[0150] [Pitching Range Limit Stopper]

[0151] FIG. 34 illustrates a stopper (660) mounted on a bracket (610) of a neck (600) in one embodiment. FIG. 35 is a cross-sectional view taken along the line VIII-VIII' of FIG. 34.

[0152] Referring to FIGS. 34 and 36, the neck (600) is provided with a stopper (660) that limits the pitch adjustment range. The stopper (660) may be formed integrally with the first bracket (610) or mounted separately. A portion of the stopper (660) is inserted into a hole (647) defined by a rotation block (620). When the neck (600) rotates around the pitch axis, the stopper (660) also rotates and moves within the hole (647). When the stopper (660) contacts the limiting pin (661) of the hole (647), further pitch rotation is mechanically blocked. Through this structure, the pitch adjustment range is limited to, for example, a range of -45 degrees to +45 degrees, thereby preventing excessive angle adjustment that could compromise patient safety or cause equipment interference.

[0153] Although the joint connecting the post (500) and the neck (600) described above in this disclosure is exemplified as a specific component of a posture fixing module, its technical principles and structural features have the versatility to be applied to a wider range of mechanical connection systems. That is, the joint of this disclosure can provide an effective technical solution in any mechanical system where a movable member must perform two-axis rotational motions of pitching and yawing relative to a fixed member. Specifically, the joint can be applied to mechanical connection parts in various fields, such as joints of industrial robots, direction control devices for cameras and sensors, angle adjustment mechanisms for lighting fixtures, positioning devices for medical devices, and direction control systems for surveying and observation equipment. All of these application fields share the common characteristic that a movable part requires precise angle adjustment and secure position fixation simultaneously relative to a fixed reference part, and the two-axis simultaneous fixation mechanism provided by the joint of this disclosure can effectively satisfy these requirements.

[0154] Although the technical concept of the present disclosure has been described by some embodiments and examples illustrated in the accompanying drawings, it should be understood that various substitutions, modifications, and changes may be made without departing from the technical concept and scope of the present disclosure as understood by those skilled in the art to which the present disclosure pertains. Furthermore, such substitutions, modifications, and changes should be considered to fall within the scope of the appended claims.

Claims

In a fixing mechanism configured to selectively fix a movable member, which is movably connected to a base member, to the base member, A movable block positioned on the lower side of the base member; A locking projection mounted to be elastically supported on the above-mentioned movable block and protruding downward from the lower surface of the above-mentioned movable block; A shaft screw-coupled to the above-mentioned movable block - including a flange located on the lower side of the above-mentioned movable block and defining a groove portion receiving the above-mentioned locking projection; and It includes an operating knob coupled to one end of the shaft, and The above-mentioned moving block fixes the movable member to the base member by moving upward according to the rotation of the operating knob in the locking direction, and allows the movable member to move relative to the base member by moving downward according to the rotation of the operating knob in the unlocking direction. When the movable block approaches the flange by a predetermined distance or less as the operating knob rotates in the loosening direction, the locking projection is received in the groove to restrict the rotation of the operating knob in the loosening direction. Fixed mechanism. In paragraph 1, The above-mentioned stopper is pressed downward by an elastic member, and is prevented from detaching from the movable block by a restraining member coupled to the movable block. Fixed mechanism. In paragraph 1, The above groove is defined by a bottom surface recessed downward from the upper surface of the flange and an inner wall surface extending from the bottom surface to the upper surface of the flange. Fixed mechanism. In paragraph 3, The above inner wall surface includes a first inner wall surface facing the loosening direction, and the upper surface of the flange adjacent to the first inner wall surface defines a first locking projection, and When the above-mentioned moving block is received in the above-mentioned groove, and the above-mentioned operating knob rotates in the above-mentioned release direction, the above-mentioned locking projection engages with the above-mentioned first locking projection. Fixed mechanism. In paragraph 4, The above-mentioned stopper includes a first interference surface that engages with the first stopper, and the first inner wall surface and the first interference surface are vertical surfaces. Fixed mechanism. In paragraph 4, The inner wall surface includes a second inner wall surface facing the locking direction, and the locking projection includes a second interference surface facing the second inner wall surface in the locking direction when received in the groove. At least one of the second interference surface and the second inner wall surface is formed as an inclined surface, so that when the operating knob is rotated in the locking direction, the inclined surface presses the locking projection upward to disengage it from the groove. Fixed mechanism. In paragraph 1, A pair of guide pins are coupled to the above-mentioned movable block, and the guide pins are inserted into guide holes formed in the base member to guide the linear movement of the movable block. Fixed mechanism. In paragraph 2, The above elastic member is a coil spring, Fixed mechanism. In paragraph 2, The above restraining member includes a head portion and a screw portion, is coupled to the movable block through the screw portion, and a part of the head portion overlaps vertically with a part of the locking projection. Fixed mechanism. In paragraph 2, The above-mentioned moving block includes a projection receiving portion configured to accommodate the above-mentioned locking projection and allow vertical movement of the above-mentioned locking projection, and When the above-mentioned movable block descends, when the above-mentioned locking projection contacts the upper surface of the flange, the above-mentioned locking projection retracts into the inside of the projection receiving portion, and when the above-mentioned locking projection is positioned on the groove portion, the above-mentioned locking projection enters the inside of the groove portion by the restoring force of the elastic member. Fixed mechanism. In a posture fixing module mounted on a bed, A pair of supports mounted on the bed; and It includes a beam that extends in the width direction of the bed, with both ends supported by the pair of supports respectively, and is capable of sliding in the width direction relative to the supports. The above pair of supports is a base member and the beam is a movable member, and the movable member is fixed to the base member by a fixing mechanism of any one of claims 1 to 10. Posture fixing module. In a posture fixing module mounted on a bed, A beam mounted on the bed and extending in the width direction of the bed; and It includes a slider mounted to the beam so as to be slidable in the width direction, and The beam is a base member and the slider is a movable member, and the movable member is fixed to the base member by a fixing mechanism of any one of claims 1 to 10. Posture fixing module.

Images