Telescopic folding traction frame

Abstract

The invention relates to a telescopic folding traction frame, which comprises a lying plate and a suspension mechanism, and is characterized in that the suspension mechanism comprises mounting seats, upright posts, a positioning lock handle, a suspension rod, a lockable sliding seat and a quick-opening rope buckling device, the two mounting seats are symmetrically mounted on two sides of the tail end of the lying plate, one upright post is hinged on each mounting seat through a pin shaft, and the other upright post is hinged on the suspension rod through a pin shaft. The stand column can rotate around the pin shaft to be erected or folded to be laid flat, and a positioning lock handle is arranged between the stand column and the installation base. The lifting rod is installed at the upper ends of the two stand columns, at least two lockable sliding seats are installed on the lifting rod, the lower end of each lockable sliding seat is connected with a quick-opening type rope buckling device, and a lower limb hanging rope can penetrate through the quick-opening type rope buckling devices quickly and be fixed. The device is ingenious in structure, reasonable in design, convenient to use, safe and reliable.

Description

Technical Field

[0001] The invention relates to an orthopedic treatment instrument, in particular to a telescopic and foldable traction frame, belonging to the technical field of medical instruments. Background Art

[0002] An orthopedic traction frame is a medical device used to treat orthopedic conditions such as fractures and joint dislocations. It stretches and immobilizes the affected limb, reducing and fixing the fracture ends and maintaining their correct physiological position, thereby promoting fracture healing. It can also relieve muscle spasms, alleviate pain, prevent fracture displacement, and improve joint mobility.

[0003] There are various types of orthopedic traction frames currently in clinical use, including Brown frame, Thomas frame, Russel traction frame, ulnar olecranon traction frame, pediatric lower limb suspension traction frame, etc. Among them, pediatric lower limb suspension traction frame is often used for traction treatment of femoral fracture or hip dislocation in children. It can effectively reduce and fix the fracture site by suspending the patient's lower limbs for traction.

[0004] Currently, commonly used pediatric lower limb suspension and traction frames typically consist of a reclining board for the child to lie on, and a suspension mechanism fixedly mounted on the reclining board, from which the child's lower limbs are suspended. Because children of different ages vary in body and leg length, there is a clear clinical need for adjustable pediatric lower limb suspension and traction frames. However, currently commonly used clinical suspension and traction frames have a single structure and cannot be flexibly adjusted according to the child's body and leg length. Therefore, it is necessary to design a telescopic and foldable traction frame to address this issue. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a telescopic foldable traction frame which has an ingenious structure, a reasonable design, is easy to use, and is safe and reliable.

[0006] The above-mentioned purpose of the present invention is achieved through the following technical solutions:

[0007] A telescopic and foldable traction frame includes a lying board and a suspension mechanism, and is characterized in that: the suspension mechanism includes a mounting seat, a column, a positioning locking handle, a hanging rod, a lockable slide and a quick-opening rope buckle, and the two mounting seats are symmetrically installed on both sides of the tail end of the lying board, and each mounting seat is hinged with a column through a pin shaft, and the column can be rotated upright or folded flat around the pin shaft, and a positioning locking handle is provided between the column and the mounting seat; the hanging rod is installed at the upper ends of the two columns, and at least two lockable slides are installed on the hanging rod, and the lower end of each lockable slide is connected to a quick-opening rope buckle, and the quick-opening rope buckle can allow the lower limb suspension rope to be quickly inserted and fixed.

[0008] As a further improvement of the present invention, a fan-shaped plate is provided on the mounting seat, and the column is located on the inner side of the fan-shaped plate; the positioning lock handle includes an elastic telescopic rod, a cone sleeve and a handle, the elastic telescopic rod is fixedly installed in the column, the front end of the telescopic core of the elastic telescopic rod faces the fan-shaped plate, and an arc-shaped groove corresponding to the front end position of the telescopic core is opened on the fan-shaped plate, and the two ends of the arc-shaped groove are expanded to form a circular first positioning port and a second positioning port, the cone sleeve is fixed on the telescopic core with the small head facing outward, and when the telescopic core is extended, the cone sleeve drives the cone sleeve to be embedded in the first positioning port and the second positioning port; the handle is installed at the head end of the telescopic core.

[0009] As a further improvement of the present invention, the head end of the telescopic core is provided with an external thread, the inner side of the handle is provided with an internal threaded hole, the handle is screwed onto the telescopic core, and an annular ring is installed around the internal threaded hole on the inner side of the handle. The inner diameter of the annular ring is larger than the maximum outer diameter of the tapered sleeve.

[0010] As a further improvement of the present invention, the lockable slide includes a slide body and a locking handwheel. The slide body is slidably installed on the boom, and the locking handwheel is threadedly installed on the slide body. When the inner end of the locking handwheel is screwed inward, it can press against the boom to lock it.

[0011] As a further improvement of the present invention, the quick-open rope lock includes a rope lock body, a movable rope lock rod, a movable sleeve and a locking ring, the rope lock body is runway-shaped, and an opening is provided on one side of the rope lock body, the movable rope lock rod is hinged at the upper end of the opening, and the lower end of the opening is provided with a hook groove that is engaged with the lower end of the movable rope lock rod; a movable sleeve that can move axially but cannot rotate is installed on the movable rope lock rod, and an extension arm is provided on the outer wall of the movable sleeve facing the inside of the rope lock body, and a J-shaped clamping tongue is rotatably installed on the extension arm, and the upper end of the clamping tongue is rotatably installed on the extension arm through the opening hole, and a torsion spring is provided between the clamping tongue and the extension arm to drive the tail end of the clamping tongue to press down, and the lower side surface of the tail end of the clamping tongue is provided with anti-slip teeth; a freely rotatable locking ring is installed on the lower end of the movable sleeve, the lower end of the inner part of the locking ring is provided with an internal thread, and the outer wall of the lower end of the opening of the rope lock body is provided with a matching external thread.

[0012] As a further improvement of the present invention, a connecting ring is provided inside the upper end of the cord lock body.

[0013] As a further improvement of the present invention, a rope-holding groove is provided inside the lower end of the rope lock body, and both sides of the rope-holding groove are arc-shaped protrusions inward.

[0014] As a further improvement of the present invention, the anti-slip teeth are arranged as ratchet teeth with an inclined direction toward the tail end of the pressing tongue.

[0015] As a further improvement of the present invention, the lying board is a folding structure, which includes a main board body and a folding board body, two mounting seats are installed on both sides of the upper surface of the tail end of the main board body, and the tail end of the folding board body is hinged to the head end of the main board body.

[0016] As a further improvement of the present invention, the telescopic folding traction frame is further provided with a multi-purpose lock buckle, and the multi-purpose lock buckle includes a locking rod, a lock body, a screw, a spring, a lock tongue and a lock mortise, wherein the locking rod is fixed to the outer side surface of the head end of the main body, the locking rod includes a square column lower section with a square cross section and a cylindrical upper section with a perfect circular cross section, and the diameter of the perfect circular section is equal to the side length of the square; a mounting hole is opened at the tail end of the lock body, the lower section of the mounting hole is a square hole adapted to the locking rod, and the locking rod is installed in the square hole, and the lock body can only be rotated after being pulled out to a set height; the upper section of the mounting hole is a T-shaped hole, and the screw is installed in the T-shaped hole, the lower end of the screw is connected to the upper end of the locking rod, the spring is sleeved on the screw, the upper end of the spring is connected to the screw head end, and the lower end of the spring abuts against the step inside the lock body, and the lock body automatically resets when no external pulling force is applied; the lock tongue is arranged at the bottom of the head end of the lock body, and the lock mortise is embedded in the outer side surface of the tail end of the folding plate body, and the lock mortise and the lock tongue are adapted to the position and can be correspondingly embedded and magnetically connected.

[0017] As a further improvement of the present invention, the lying board is a telescopic structure, which includes a first dustpan-shaped board and a second dustpan-shaped board. The opening directions of the first dustpan-shaped board and the second dustpan-shaped board are facing each other, and the two side edges of the first dustpan-shaped board are slidably engaged with the two side edges of the second dustpan-shaped board through a slot structure; the bottom plate of the first dustpan-shaped board and the bottom plate of the second dustpan-shaped board are staggered and overlapped to form a concave cavity for installing a mattress.

[0018] As a further improvement of the present invention, the mattress is made of elastically stretchable material, and both ends of the mattress are respectively connected to the inner side surfaces of the bottom edges of the first dustpan-shaped plate and the second dustpan-shaped plate.

[0019] As a further improvement of the present invention, the column includes a lower column tube and an upper column tube. The lower end of the lower column tube is hinged to the mounting seat through a pin shaft. The upper column tube is inserted into the lower column tube and can be moved up and down for adjustment. A locking structure is provided between the lower column tube and the upper column tube.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1) The present invention designs a positioning lock handle with a brand-new structure, so that the column in the suspension mechanism can be quickly turned horizontally or vertically and locked and fixed; by designing a brand-new structure of quick-open rope buckle, the lower limb suspension rope can be quickly inserted and fixed. After the lower limb suspension rope is inserted, it can be pulled upward in one direction to adjust the height, and can prevent the lower limb suspension rope from falling accidentally. It is easy to use and safe and reliable.

[0022] 2) The present invention provides a folding structure or a telescopic structure for the lying board and a telescopic structure for the upright post, so that the telescopic folding traction frame can be easily opened when in use and can be quickly folded when not in use for easy storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of Example 1 of the present invention.

[0024] Figure 2 for Figure 1 side view.

[0025] Figure 3 for Figure 1 A is an enlarged schematic diagram.

[0026] Figure 4 This is a schematic diagram of the structure of the quick-open rope buckle of the present invention when it is opened.

[0027] Figure 5 This is a schematic diagram of the structure of the quick-open rope buckle of the present invention when it is closed and tightens the lower limb suspension rope.

[0028] Figure 6 for Figure 5 side view.

[0029] Figure 7 This is a side view of the structure of embodiment 2 of the present invention in the unfolded state.

[0030] Figure 8 This is a side view of the structure of embodiment 2 of the present invention in a folded state.

[0031] Figure 9 This is a structural side view of the multi-purpose lock in Example 2 of the present invention.

[0032] Figure 10 This is a structural cross-sectional view of the multi-purpose lock in Example 2 of the present invention.

[0033] Figure 11 This is a top view of the structure of the lying board in Example 3 of the present invention.

[0034] Figure 12 for Figure 10 BB structural cross-section view.

[0035] Explanation of reference numerals: 1-lying board, 2-mounting seat, 3-upright column, 4-positioning lock handle, 5-suspending rod, 6-lockable slide, 7-quick-opening rope buckle, 8-lower limb hanging rope, 9-multi-purpose lock buckle, 11-main body, 12-folding board, 13-first dustpan-shaped board, 14-second dustpan-shaped board, 21-fan-shaped board, 22-arc-shaped groove, 23-first positioning port, 24-second positioning port, 31-lower column tube, 32-upper column tube, 41-elastic telescopic rod, 41 a- telescopic core, 42- cone sleeve, 43- handle, 44- annular ring, 61- slide body, 62- locking handwheel, 71- rope lock body, 72- movable buckle rod, 73- movable sleeve, 74- locking ring, 75- opening, 76- hook groove, 77- extension arm, 78- pressing tongue, 79- torsion spring, 91- locking rod, 92- lock body, 93- screw, 94- spring, 95- lock tongue and 96- lock mortise, 91a- lower section of square column, 91b- upper section of cylinder. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to specific drawings and embodiments. It is apparent that the embodiments described are only a portion of the embodiments of the present invention, rather than all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if the embodiments of the present invention include descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0039] Example 1

[0040] like Figures 1 to 6 As shown, Example 1 discloses a telescopic folding traction frame, which is mainly composed of a lying board 1, a mounting seat 2, a column 3, a positioning lock handle 4, a suspension rod 5, a lockable slide 6 and a quick-open rope buckle 7 and other components.

[0041] like Figure 1 、 Figure 2As shown, the reclining board 1 is for the patient to lie on; two mounting seats 2 are symmetrically mounted on both sides of the rear end of the reclining board 1, and each mounting seat 2 is hinged with a column 3 via a pin. A positioning lock handle 4 is provided between the column 3 and the mounting seat 2, and the column 3 can be locked and fixed using the positioning lock handle 4 when it is turned horizontally or vertically. A suspension rod 5 is mounted on the upper ends of the two columns 3, and two lockable slides 6 are mounted on the suspension rod 5. The lower end of each lockable slide 6 is connected to a quick-opening rope buckle 7, which allows the lower limb suspension rope 8 to be quickly inserted and fixed. The above-mentioned mounting seats 2, columns 3, positioning lock handles 4, suspension rods 5, lockable slides 6 and quick-opening rope buckles 7 constitute a suspension mechanism for suspending the patient's legs. When in use, the patient lies on his back on the reclining board 1, and his legs are connected to the quick-opening rope buckle 7 through the lower limb suspension rope 8, thereby achieving suspension traction of the patient's lower limbs, which can effectively reduce and fix the fracture site.

[0042] In this embodiment 1, the mounting base 2 is provided with a sector plate 21, the column 3 is located on the inner side of the sector plate 21, and the lower ends of the two are rotatably connected by a pin; the positioning lock handle 4 is mainly composed of an elastic telescopic rod 41, a cone sleeve 42 and a handle 43. The elastic telescopic rod 41 is fixedly installed in the column 3, and the front end of the telescopic core 41a of the elastic telescopic rod 41 faces the sector plate 21. An arc groove 22 corresponding to the front end position of the telescopic core 41a is opened on the sector plate 21, and the two ends of the arc groove 22 are expanded to form a circular first positioning port 23 and a second positioning port 24. The cone sleeve 42 is fixed to the telescopic core 41 a with the small end facing outwards, when the telescopic core 41a is extended, it drives the cone sleeve 42 to be embedded in the first positioning port 23 and the second positioning port 24; when the cone sleeve 42 is embedded in the first positioning port 23, the column 3 is locked in an upright state; when the cone sleeve 42 is embedded in the second positioning port 24, the column 3 is locked in a horizontally folded state; the handle 43 is installed at the head end of the telescopic core 41a, and the user holds the handle 43 and pushes it inward to retract the telescopic core 41a of the elastic telescopic rod 41, so that the cone sleeve 42 can withdraw from the first positioning port 23 or the second positioning port 24, and the column 3 can rotate around the pin shaft.

[0043] In this embodiment 1, to further enhance locking security, the structure of the positioning lock handle 4 can be further improved as follows: the head end of the telescopic core 41a is provided with an external thread, the inner side of the handle 43 is provided with an internal threaded hole, the handle 43 is threadedly mounted on the telescopic core 41a, and an annular ring 44 is mounted around the internal threaded hole on the inner side of the handle 43. The inner diameter of the annular ring 44 is larger than the maximum outer diameter of the tapered sleeve 42. With this arrangement, when the telescopic core 41a extends and drives the tapered sleeve 42 to fit into the first positioning opening 23 or the second positioning opening 24, the handle 43 can be further screwed inward to press the annular ring 44 tightly against the outer side of the mounting base 2. This prevents the tapered sleeve 42 from accidentally withdrawing and causing the column 3 to become unstable, and also cooperates with the tapered sleeve 42 to tightly connect and secure the column 3 to the mounting base 2.

[0044] In this embodiment 1, the lockable slide 6 includes a slide body 61 and a locking handwheel 62. The slide body 61 is slidably installed on the suspension rod 5, and the locking handwheel 62 is threadedly installed on the slide body 61. When the inner end of the locking handwheel 62 is screwed inward, it can tightly press against the suspension rod 5 to lock it.

[0045] In this embodiment 1, the quick-open rope buckle 7 includes a rope buckle body 71, a movable buckle rod 72, a movable sleeve 73 and a locking ring 74. The rope buckle body 71 is in the shape of a runway, and an opening 75 is provided on one side of the rope buckle body 71. The movable buckle rod 72 is hinged at the upper end of the opening 75, and the lower end of the opening 75 is provided with a hook groove 76 that is engaged with the lower end of the movable buckle rod 72; a movable sleeve 73 that can move axially but cannot rotate is installed on the movable buckle rod 72, and an extension is provided on the outer wall of the movable sleeve 73 facing the inside of the rope buckle body 71. The extension arm 77 has a J-shaped pressing tongue 78 rotatably mounted on the extension arm 77. The upper end of the pressing tongue 78 is rotatably mounted on the extension arm 77 through the mounting hole. A torsion spring 79 is provided between the pressing tongue 78 and the extension arm 77 to drive the tail end of the pressing tongue 78 downward. The lower side surface of the tail end of the pressing tongue 78 is provided with anti-slip teeth. The lower end of the movable sleeve 73 is provided with a freely rotatable locking ring 74. The lower end of the locking ring 74 has an internal thread. The outer wall of the lower end of the opening 75 of the rope lock body 71 has a matching external thread. With this arrangement, when the movable buckle rod 72 is pushed inward, the movable buckle rod 72 drives the movable sleeve ring to swing upward. Figure 4 ], the lower limb suspension rope 8 can be conveniently installed into the rope lock body 71 through the opening 75 on the rope lock body 71. Then, the movable buckle 72 is loosened, the movable buckle 72 is reset, and the lower end of the movable buckle 72 is engaged with the hook groove 76. The movable sleeve 73 is moved downward to the lower end of the movable buckle 72, and the locking ring 74 is screwed so that the locking ring 74 is threadedly connected to the lower end of the opening 75 of the rope lock body 71. At this time, the pressing tongue 78 is tightly pressed against the lower limb suspension rope 8 by the torsion spring 79. The lower limb suspension rope 8 can be pulled unidirectionally toward the side where the pressing tongue 78 is deflected to adjust the suspension height. When the lower limb suspension rope 8 is loosened, the lower limb suspension rope 8 tends to retreat and fall. However, because the pressing tongue 78 is tightly pressed against the lower limb suspension rope 8, the retreat of the lower limb suspension rope 8 causes the pressing tongue 78 to swing in the opposite direction, thereby tightly clamping the lower limb suspension rope 8. Since the locking ring 74 is threadedly connected to the lower end of the opening 75 of the rope buckle body 71, the movable sleeve 73 and the clamping tongue 78 thereon will not move upward due to the reaction force of the lower limb suspension rope 8, ensuring that the lower limb suspension rope 8 is reliably clamped.

[0046] In this first embodiment, the upper end of the cord lock body 71 is internally provided with a connecting ring 71a. This allows the connector on the lockable slide 4 to be directly connected to the connecting ring 71a, ensuring that the quick-release cord lock 7 is stably suspended. The lower end of the cord lock body 71 is internally provided with a cord-gripping groove 71b. Both sides of the cord-gripping groove 71b are curved and protruded inwardly, ensuring that the lower side of the lower limb suspension cord 8 is also effectively clamped and secured. To further ensure that the clamping tongue 78 can compress the lower limb suspension cord 8, the anti-slip teeth are preferably configured as ratchet teeth that are inclined toward the rear end of the clamping tongue 78.

[0047] Example 2

[0048] like Figure 7 、 Figure 8 As shown, Example 2 discloses a telescopic folding traction frame, which differs from Example 1 in that the lying board 1 is a folding structure, and the lying board 1 includes a main board body 11 and a folding board body 12, and two mounting seats 2 are installed on both sides of the upper surface of the tail end of the main board body 11, and the tail end of the folding board body 12 is hinged to the head end of the main board body 11 through a hinge.

[0049] In this embodiment 2, the column 3 is a telescopic structure, and the column 3 includes a lower column tube 31 and an upper column tube 32. The lower end of the lower column tube 31 is hinged to the mounting base 2 through a pin shaft, and the upper column tube 32 is inserted into the lower column tube 31 and can be moved up and down for adjustment. A locking structure is provided between the lower column tube 31 and the upper column tube 32. The locking structure can be an elastic pin, a locking bolt or other structure, as long as the lower column tube 31 and the upper column tube 32 can be locked and fixed.

[0050] like Figures 7 to 10 As shown, in this embodiment 2, the telescopic folding traction frame is further provided with a multi-purpose lock buckle 9, which includes a lock rod 91, a lock body 92, a screw 93, a spring 94, a lock tongue 95 and a lock socket 96. The lock rod 91 is fixed to the outer side of the head end of the main body 11, and the lock rod 91 includes a square column lower section 91a with a square cross section and a cylindrical upper section 91b with a perfect circular cross section, and the diameter of the perfect circular section is equal to the side length of the square; the tail end of the lock body 92 is provided with a mounting hole, and the lower section of the mounting hole is a square hole adapted to the lock rod 91, and the lock rod 91 is mounted in the square hole The lock body 92 can be rotated only after being pulled out to a set height; the upper section of the mounting hole is a T-shaped hole, the screw 93 is installed in the T-shaped hole, the lower end of the screw 93 is connected to the upper end of the locking rod 91, the spring 94 is sleeved on the screw 93, the upper end of the spring 94 is connected to the head end of the screw 93, the lower end of the spring 94 abuts against the step inside the lock body 92, and the lock body 92 automatically resets when it is not subjected to external pulling force; the lock tongue 95 is arranged at the bottom of the head end of the lock body 92, and the lock mortise 96 is embedded in the outer side surface of the tail end of the folding plate body 12, and the lock mortise 96 is adapted to the position of the lock tongue 95 and can be correspondingly embedded and magnetically connected.

[0051] When the lying board 1 is unfolded, Figure 7 In the state, the square hole at the rear end of the lock body 92 is embedded in the entire lock rod 91 and forms a limit with the lower section 91a of the square column [see Figure 10 】, the lock tongue 95 at the head end of the lock body 92 is embedded in the lock socket 96 and connected by magnetism, so that the main body 11 and the folding body 12 of the reclining board 1 can be locked in the horizontal unfolded state. When the reclining board 1 needs to be folded, the lock body 92 is first pulled outward along the lock rod 91 for a certain distance. At this time, only the upper cylindrical section 91b is located in the square hole [see Figure 9 】, the lock tongue 95 at the head end of the lock body 92 leaves the lock socket 96, and the lock body 92 can now rotate around the cylindrical upper section 91b. Then the main body 11 and the folding plate 12 are folded into Figure 8 The lock body 92 is in the state, and then the lock body 92 is rotated 90 degrees clockwise and released. The lock body 92 will move inward along the lock rod 91 under the action of the spring 94 to reset, so that the lock tongue 95 at the head end of the lock body 92 is again embedded in the lock socket 96 and magnetically connected. At this time, the square hole at the tail end of the lock body 92 is embedded in the entire lock rod 91 and forms a limit with the lower section 91a of the square column, locking the main body 11 and the folding plate body 12 in Figure 8 folded state.

[0052] By adopting the above structure, the telescopic foldable traction frame of this embodiment 2 can be conveniently opened into a Figure 7 The state shown can be folded into Figure 8 In addition, it should be noted that in actual processing and manufacturing, the folding plate body 12 can also be located on the upper surface of the main body 11 when in the folded state. At this time, the two sides of the head end of the folding plate body 12 can be provided with gaps to avoid the mounting seat 2 according to the situation, so that the folding plate body 12 can be folded and laid flat.

[0053] Example 3

[0054] like Figure 11 、 Figure 12 As shown, Example 3 discloses a telescopic and foldable traction frame. The difference between Example 2 and Example 2 is that the lying board 1 is a telescopic structure, which includes a first dustpan-shaped board 13 and a second dustpan-shaped board 14. The opening directions of the first dustpan-shaped board 13 and the second dustpan-shaped board 14 are facing each other. The two side edges of the first dustpan-shaped board 13 and the two side edges of the second dustpan-shaped board 14 are slidably engaged with each other through a slot structure; the bottom plate of the first dustpan-shaped board 13 and the bottom plate of the second dustpan-shaped board 14 are staggered and overlapped to form a concave cavity for installing a mattress [not shown in the figure]. Preferably, the mattress is made of an elastically stretchable material, and the two ends of the mattress are respectively connected to the inner side surfaces of the bottom edges of the first dustpan-shaped board 13 and the second dustpan-shaped board 14 [such as by Velcro]. In this way, the mattress can adaptively deform as the lying board 1 is stretched or shortened.

[0055] The above description is merely a preferred embodiment of the present invention, and the above specific embodiment is not intended to limit the present invention. Various variations and modifications are possible within the technical scope of the present invention. Any modifications, alterations, or equivalent substitutions made by a person skilled in the art based on the above description are within the scope of protection of the present invention.

Claims

1. A telescopic and foldable traction frame, comprising a lying board (1) and a suspension mechanism, characterized in that: The suspension mechanism comprises a mounting seat (2), a column (3), a positioning lock handle (4), a suspension rod (5), a lockable slide seat (6) and a quick-open rope buckle (7). The two mounting seats (2) are symmetrically mounted on both sides of the rear end of the lying board (1). Each mounting seat (2) is hinged with a column (3) through a pin shaft. The column (3) can be rotated around the pin shaft to stand upright or folded flat. A positioning lock handle (4) is provided between the column (3) and the mounting seat (2); the suspension rod (5) is mounted on the upper ends of the two columns (3). At least two lockable slide seats (6) are mounted on the suspension rod (5). The lower end of each lockable slide seat (6) is connected to a quick-open rope buckle (7). The quick-open rope buckle (7) can allow the lower limb suspension rope (8) to be quickly inserted and fixed.

2. The telescopic and foldable traction frame according to claim 1, characterized in that: The mounting seat (2) is provided with a sector plate (21), and the column (3) is located on the inner side of the sector plate (21); the positioning lock handle (4) comprises an elastic telescopic rod (41), a cone sleeve (42) and a handle (43); the elastic telescopic rod (41) is fixedly installed in the column (3), the front end of the telescopic core (41a) of the elastic telescopic rod (41) faces the sector plate (21), and the sector plate (21) is provided with an arc groove (22) corresponding to the front end position of the telescopic core (41a), and the two ends of the arc groove (22) are expanded to form a circular first positioning opening (23) and a second positioning opening (24); the cone sleeve (42) is fixed on the telescopic core (41a) with the small end facing outward, and when the telescopic core (41a) is extended, the cone sleeve (42) is driven to be embedded in the first positioning opening (23) and the second positioning opening (24); the handle (43) is installed at the head end of the telescopic core (41a).

3. The telescopic and foldable traction frame according to claim 2, characterized in that: The head end of the telescopic core (41a) is provided with an external thread, the inner side of the handle (43) is provided with an internal thread hole, the handle (43) is screwed onto the telescopic core (41a), and an annular ring (44) is installed around the internal thread hole on the inner side of the handle (43), and the inner diameter of the annular ring (44) is greater than the maximum outer diameter of the tapered sleeve (42).

4. The telescopic and foldable traction frame according to claim 1, wherein: The lockable slide (6) comprises a slide body (61) and a locking hand wheel (62); the slide body (61) is slidably mounted on the suspension rod (5); the locking hand wheel (62) is threadedly mounted on the slide body (61); and the inner end of the locking hand wheel (62) can be screwed inward to press against the suspension rod (5) to lock it.

5. The telescopic and foldable traction frame according to claim 1, characterized in that: The quick-open rope buckle (7) comprises a rope buckle body (71), a movable buckle rod (72), a movable sleeve (73) and a locking ring (74). The rope buckle body (71) is in the shape of a runway. An opening (75) is provided on one side of the rope buckle body (71). The movable buckle rod (72) is hinged at the upper end of the opening (75). The lower end of the opening (75) is provided with a hook groove (76) that is engaged with the lower end of the movable buckle rod (72). The movable buckle rod (72) is provided with a movable sleeve (73) that can move axially but cannot rotate. An extension arm (76) is provided on the outer wall of the movable sleeve (73) facing the inside of the rope buckle body (71). 77), a J-shaped pressing tongue (78) is rotatably mounted on the extension arm (77), the upper end of the pressing tongue (78) is rotatably mounted on the extension arm (77) through an opening, a torsion spring (79) is provided between the pressing tongue (78) and the extension arm (77) to drive the tail end of the pressing tongue (78) to press down, and an anti-slip tooth is provided on the lower side surface of the tail end of the pressing tongue (78); a freely rotatable locking ring (74) is installed at the lower end of the movable sleeve (73), an internal thread is provided at the lower end of the locking ring (74), and a matching external thread is provided on the outer wall of the lower end of the opening (75) of the rope lock body (71).

6. The telescopic and foldable traction frame according to claim 1, characterized in that: A rope clamping groove (71b) is provided inside the lower end of the rope lock body (71), and both sides of the rope clamping groove (71b) are arc-shaped protrusions inward.

7. The telescopic and foldable traction frame according to claim 1, wherein: The lying board (1) is a folding structure, which includes a main board body (11) and a folding board body (12), two mounting seats (2) are installed on both sides of the upper surface of the tail end of the main board body (11), and the tail end of the folding board body (12) is hinged to the head end of the main board body (11).

8. The telescopic and foldable traction frame according to claim 7, characterized in that: The telescopic folding traction frame is also provided with a multi-purpose lock buckle (9), which includes a lock rod (91), a lock body (92), a screw (93), a spring (94), a lock tongue (95) and a lock socket (96). The lock rod (91) is fixed to the outer side surface of the head end of the main body (11), and the lock rod (91) includes a square column lower section (91a) with a square cross section and a cylindrical upper section (91b) with a perfect circular cross section, and the diameter of the perfect circular section is equal to the side length of the square. The tail end of the lock body (92) is provided with a mounting hole, and the lower section of the mounting hole is a square hole adapted to the lock rod (91). The lock rod (91) is installed in the square hole, and the lock body (9 2) It can rotate only after being pulled out to set the height; the upper section of the mounting hole is a T-shaped hole, the screw (93) is installed in the T-shaped hole, the lower end of the screw (93) is connected to the upper end of the lock rod (91), the spring (94) is sleeved on the screw (93), the upper end of the spring (94) is connected to the head end of the screw (93), the lower end of the spring (94) abuts against the step inside the lock body (92), and the lock body (92) automatically resets when it is not subjected to external pulling force; the lock tongue (95) is arranged at the bottom of the head end of the lock body (92), the lock mortise (96) is embedded in the outer side surface of the tail end of the folding plate body (12), and the lock mortise (96) and the lock tongue (95) are adapted to each other and can be correspondingly embedded and magnetically connected.

9. The telescopic and foldable traction frame according to claim 1, wherein: The lying board (1) is a telescopic structure, which includes a first dustpan-shaped board (13) and a second dustpan-shaped board (14). The opening directions of the first dustpan-shaped board (13) and the second dustpan-shaped board (14) are facing each other, and the two side edges of the first dustpan-shaped board (13) and the two side edges of the second dustpan-shaped board (14) are slidably engaged with each other through a slot structure; the bottom plate of the first dustpan-shaped board (13) and the bottom plate of the second dustpan-shaped board (14) are staggered and overlapped to form a concave cavity for installing a mattress; the mattress is made of elastically stretchable material, and the two ends of the mattress are respectively connected to the inner side surfaces of the bottom edges of the first dustpan-shaped board (13) and the second dustpan-shaped board (14).

10. The telescopic and foldable traction frame according to claim 1, wherein: The column (3) comprises a lower column tube (31) and an upper column tube (32); the lower end of the lower column tube (31) is hinged to the mounting seat (2) via a pin shaft; the upper column tube (32) is inserted into the lower column tube (31) and can be moved up and down for adjustment; a locking structure is provided between the lower column tube (31) and the upper column tube (32).

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