Rotating guard safety mechanism

Abstract

The utility model relates to a kind of rotating guardrail safety mechanisms, which utilizes a safety mechanism to mount a door on one side of a fence. The safety mechanism restricts the door from being opened, preventing patients from getting out of bed at will and achieving a protective effect of safety. The safety mechanism controls the door to open at an angle relative to the fence, facilitating patients to get out of bed. The bottom of the fence extends two rods, which are detachably inserted into the edge of a bed to support the opening of the door.

Description

Technical Field

[0001] This utility model relates to the field of bed protection, and in particular to a safety mechanism that prevents the door of a rotating guardrail from being opened arbitrarily, thus avoiding the patient from getting out of bed at will and achieving a safety protection effect. Background Technology

[0002] Traditional hospital beds have guardrails on both sides to prevent patients from falling. Typically, at least one guardrail has a sliding door; once opened, the patient can easily exit. Returning to the bed and closing the door ensures the guardrail's safety.

[0003] A lock is added to a standard guardrail as a security mechanism for the sliding door, serving as the means to open or close it. By observing how caregivers operate it, they can learn the door-opening techniques, enabling patients to push open the sliding door and easily get out of bed.

[0004] Taiwanese Patent No. TWM607585 discloses a guardrail structure that utilizes a safety locking mechanism to mount a movable part to the side of a fixed part. The safety locking mechanism includes an outer tube, an inner tube, and a control element. The top edge of the outer tube wall forms two L-shaped guide grooves, and a U-shaped positioning groove is formed in the middle of the tube wall. The inner tube is inserted into the outer tube, and its wall has a transverse groove and a positioning rod. The transverse groove faces the two guide grooves, and the positioning rod protrudes from the inner tube and is inserted into the positioning groove, determining whether the movable part moves relative to the fixed part to a closed position or an open position. A connecting rod extends below the control element and is inserted into the inner tube. The connecting rod protrudes a guide rod, passes through the transverse groove of the inner tube, and inserts into one of the two guide grooves, causing the movable part to stop in either the closed or open position.

[0005] The movable part, which opens approximately 90 degrees outward from the closed position to the open position, can no longer prevent the patient from getting out of bed. Most patients can return to bed on their own after getting out. However, patients with severe dementia, even in long-term living environments, are usually unable to return to bed on their own after getting out, unnecessarily increasing the burden on caregivers, medical staff, relatives, friends, or family members searching for them.

[0006] Secondly, the transverse grooves cut into the inner tube at angles greater than 90° cause an irreparable loss in the structural strength of the tube wall, which relatively shortens the service life of the guardrail, making it necessary to improve it. Utility Model Content

[0007] To overcome the problem of previous technologies where the opening of the door was always the same, the main purpose of this utility model is to provide a rotating guardrail safety mechanism. It adopts a multi-segment mechanical structure, is suitable for rotating guardrails, improves the angle control of the door opening, prevents mentally disabled persons from getting out of bed at will, protects patient safety, and reduces the chance of being searched.

[0008] In order to overcome the problem that the previous technology weakened the structural strength and affected the service life, the main purpose of this utility model is to provide a rotating guardrail safety mechanism. By using a button and handle assembly mechanism, the basic structural strength is preserved, the opening and closing of the rotating guardrail is controlled, and the service life is relatively extended.

[0009] To achieve the above objectives, this utility model provides a rotating guardrail safety mechanism, comprising:

[0010] A fence;

[0011] A gate that can be rotatably mounted on one side of the fence;

[0012] A positioning piece is fixed between the fence and the gate, with multiple recesses formed around its periphery and multiple equally spaced protrusions separated by each recess.

[0013] A pivot seat, disposed between the gate and the fence, includes:

[0014] A single body that can rotate relative to the positioning plate;

[0015] A positioning hole is provided inside the body, which can rotate with the body and corresponds to a recess of the positioning piece;

[0016] An assembly chamber is located inside the main body and communicates with the positioning hole;

[0017] A handle is mounted on the body in a swinging manner;

[0018] A rod is inserted into the positioning hole and has a pop-out function. One end is connected to the handle and extends out of the body, while the other end can be inserted into the recess of the positioning plate and disengage from the recess when the handle is pulled up.

[0019] A button, located within the assembly chamber and ejected in a direction opposite to the direction in which the handle is pulled up, includes:

[0020] A tongue extends outward from the button and across the positioning hole;

[0021] The tongue forms a locking hole for the rod to pass through;

[0022] Specifically, when the tongue does not interfere with the rod, the handle can be pulled up; when the tongue blocks the rod from passing through the keyhole, the handle cannot be pulled up, thus preventing the door from being opened arbitrarily.

[0023] Wherein: the rod has an enlarged head that passes freely through the lock hole; the tongue does not obstruct the rod, allowing the handle to be pulled up; the tongue obstructs the head, preventing the handle from being pulled up.

[0024] Wherein: the assembly chamber is connected to the positioning hole via a narrow hole and a longitudinal hole, and there is a partition between the narrow hole and the longitudinal hole;

[0025] The button also includes a hook extending outward from the button, which hooks onto the partition through the longitudinal hole to keep the button pressed, and guides the tongue into the positioning hole through the elongated hole to restrict the rod from passing through the lock hole.

[0026] Wherein: the assembly chamber is connected to the positioning hole via a narrow hole and a longitudinal hole, and there is a partition between the narrow hole and the longitudinal hole;

[0027] The button also includes a hook piece inserted into the button along with the tongue piece. The hook piece passes through the longitudinal hole and hooks onto the partition to keep the button pressed. The tongue piece is guided into the positioning hole through the elongated hole to restrict the rod from passing through the lock hole.

[0028] The advantages of this utility model are: it can protect the safety of patients, reduce the probability of being searched, retain the structural strength of the basic structure, control the opening and closing of the rotating guardrail, and relatively extend the service life. Attached Figure Description

[0029] Figure 1 To draw a schematic diagram of a bed with guardrails.

[0030] Figure 2 This is a schematic diagram showing the fence of a rotating guardrail.

[0031] Figure 3 A schematic diagram illustrating a gate with a rotating guardrail.

[0032] Figure 4 This is a perspective view of a preferred embodiment of the safety mechanism of this utility model.

[0033] Figure 5 An exploded 3D view of the security agency.

[0034] Figure 6 This is a schematic diagram showing the functional shape of the handle from another angle.

[0035] Figure 7 , Figure 8 A schematic diagram showing the functional shape of the pivot seat from different angles.

[0036] Figure 9 This is a composite sectional view, illustrating the locked state of the safety mechanism.

[0037] Figure 10 This is a composite sectional view, illustrating the usage state of the unlocked security mechanism.

[0038] Figure 11Draw a schematic diagram of the safety mechanism performing adjustment actions as part of the composite sectional view.

[0039] Figure 12 A three-dimensional diagram showing the rotating guardrail opening (with the pivot seat removed).

[0040] Figure 13 A combined cross-sectional view of other embodiments of the button.

[0041] Explanation of reference numerals in the attached drawings: Bed 10; Bed frame 11; Leg 12; Fixed guardrail 13; Board 14; Rotating guardrail 15; Fence 16; Door 17; Rod 18; Upper pivot structure 20; Lower pivot structure 21; Support rod 22; Tube 23; Long axis 24; Short axis 25; Hole 26; Central pivot structure 27; Safety mechanism 30; Positioning plate 31; Recess 32; Protrusion 33; Handle 34; Ring 35; Neck 36; Sphere 37; Slanted hole 38; Reinforcing part 39; Rotary bearing seat 40; Body 41; Base 42; Extension 43; Chamber 44; Through hole 45; Locking hole 46 Fasteners 47, 90; Bead groove 48; Horizontal groove 49; Assembly chamber 50; Wall 51; Slide groove 52; Bottom 53; Divider 54; Narrow hole 55; Longitudinal hole 56; Positioning hole 60; Small diameter section 61; Spring groove 62; Covering part 63; Shoulder 64; Button 70; Key 71; Pin 72; Through hole 73; Hook piece 74; Tongue piece 75; Inner post 76; Elastic element 77; Positioning hole 78; Locking hole 79; Rod 80; External thread section 81; Washer 82, 91; Nut 83; Spring 84; Flange 85; Head 86; Sleeve 87; Bushing 92; Washer 93. Detailed Implementation

[0042] As shown in the figure, this utility model provides a rotating guardrail safety mechanism, including:

[0043] A fence 16;

[0044] A door 17 is rotatably disposed on one side of the fence 16;

[0045] A positioning piece 31 is fixed between the fence 16 and the gate 17, and its periphery forms a plurality of recesses 32, and the recesses 32 are divided into a plurality of equally spaced protrusions 33.

[0046] A pivot seat 40 is disposed between the door 17 and the fence 16, and includes:

[0047] A body 41 is rotatable relative to the positioning piece 31;

[0048] A positioning hole 60 is provided inside the body 41, which can rotate with the body 41 and corresponds to a recess 32 of the positioning piece 31;

[0049] An assembly chamber 50 is located inside the main body 41 and communicates with the positioning hole 60;

[0050] A handle 34 is pivotally mounted on the body 41;

[0051] A rod 80 is inserted into the positioning hole 60 and has a pop-out function. One end is connected to the handle 34 and extends out from the body 41, while the other end can be inserted into the recess 32 of the positioning piece 31 and disengage from the recess 32 when the handle 34 is pulled up.

[0052] A button 70 is disposed within the assembly chamber 50 and pops out in a direction opposite to the pull-up direction of the handle 34. The button 70 includes:

[0053] A tongue 75 extends outward from the button 70 and across the positioning hole 60;

[0054] The tongue 75 forms a keyhole 79 for the rod 80 to pass through;

[0055] Specifically, when the tongue 75 does not interfere with the rod 80, the handle 34 can be pulled up; when the tongue 75 blocks the rod 80 from passing through the lock hole 79, the handle 34 is restricted from being pulled up, thereby preventing the door 17 from being opened arbitrarily.

[0056] The rod 80 has a head 86 with a larger diameter, which can pass freely through the lock hole 79. The tongue 75 does not obstruct the rod 80, allowing the handle 34 to be pulled up. When the tongue 75 obstructs the head 86, the rod 80 prevents the handle 34 from being pulled up.

[0057] The assembly chamber 50 is connected to the positioning hole 60 via an elongated hole 55 and a longitudinal hole 56, and there is a partition 54 between the elongated hole 55 and the longitudinal hole 56.

[0058] The button 70 also includes a hook 74 extending outward from the button 70. The hook 74 hooks the partition 54 through the longitudinal hole 56, keeping the button 70 in a pressed state. The tongue 75 is guided into the positioning hole 60 through the elongated hole 55, restricting the rod 80 from passing through the lock hole 79.

[0059] The assembly chamber 50 is connected to the positioning hole 60 via an elongated hole 55 and a longitudinal hole 56, and there is a partition 54 between the elongated hole 55 and the longitudinal hole 56.

[0060] The button 70 also includes a hook 74, which, along with the tongue 75, is inserted into the button 70. The hook 74 hooks the partition 54 through the longitudinal hole 56, keeping the button 70 in a pressed state. The tongue 75 is guided into the positioning hole 60 by the elongated hole 55, restricting the rod 80 from passing through the lock hole 79.

[0061] like Figure 1 As shown, a bed 10 has a bed frame 11, multiple legs 12, a fixed guardrail 13, two panels 14, and a rotating guardrail 15. Each leg 12 is fixed to the underside of the bed frame 11 and shares the weight of the bed frame 11, such as a mattress, patient, or other items. The two panels 14 are fixed to both ends of the bed frame 11 to protect the patient's head and feet. The fixed guardrail 13 is detachably installed on one side of the bed frame 11, typically near a wall in the room (not shown). The rotating guardrail 15 is detachably installed on the other side of the bed frame 11, near a passageway in the room (not shown). If both sides of the bed frame 11 are passageways, the fixed guardrail 13 can be removed and replaced with another rotating guardrail 15. In other words, the two rotating guardrails 15 are located on both sides of the bed frame 11.

[0062] The rotating guardrail 15 utilizes a safety mechanism 30 to attach a door 17 to one side of a fence 16. This safety mechanism 30 ensures that the door 17 cannot be opened arbitrarily, preventing the patient from getting out of bed unnecessarily and providing safety protection. Alternatively, the safety mechanism 30 can operate the door 17 at an angle relative to the fence 16, facilitating the patient's exit from the bed. Two rods 18 extend from the bottom of the fence 16 and are detachably inserted into the edge of the bed frame 11 to support the opening and closing of the door 17.

[0063] Next, the construction of the rotating guardrail 15 will be described in detail to help readers gain a deeper understanding of the function of the safety mechanism 30.

[0064] exist Figure 2 In the fence 16, three pivot structures are arranged side by side, defined from top to bottom as: upper pivot structure 20, middle pivot structure 27, and lower pivot structure 21. The upper pivot structure 20 consists of a support rod 22 welded to a pipe 23, with the support rod 22 protruding outside the fence 16. The middle pivot structure 27 has the same construction as the lower pivot structure 21, such that the axes of the three pipes 23 lie on a virtual center line (not shown).

[0065] exist Figure 3 In the middle, the door 17 is provided with two shafts on one side, which are kept coaxial with each other. These two shafts are defined as the major shaft 24 and the minor shaft 25. The major shaft 24 is inserted into the tube 23 of the upper pivot structure 20 (see [link]). Figure 2 The short shaft 25 is inserted into the tube 23 of the lower pivot structure 21 (as shown), and passes through multiple holes 26 in equal intervals. Figure 2 (as shown) inside.

[0066] like Figure 4As shown, the safety mechanism 30 includes, but is not limited to, a handle 34, a pivot seat 40, and a button 70. The pivot seat 40 is disposed within the rotating guardrail 15, forming the basis of the safety mechanism 30. The handle 34 is disposed within the pivot seat 40; operating the door 17 opens it, facilitating the patient's exit from the bed 10; alternatively, the patient can return to the bed 10 and operate the handle 34 to close the door 17 (see [link to relevant documentation]). Figure 1 (As shown). The button 70 is located on the pivot seat 40 and moves back and forth between an open position and a closed position. In the open position, the handle 34 operates the door 17 to open or close. In the closed position, the handle 34 cannot move, and the door 17 cannot be opened arbitrarily, preventing the patient from getting out of bed at will and achieving a safety protection effect.

[0067] exist Figure 5 In the middle, loosen one fastener 90, and remove a washer 91, a liner 92, and a washer 93. Loosen the other fasteners 47, so that the pivot seat 40 is separated from the long shaft 24 and a positioning piece 31. The positioning piece 31 is fixed to the tube 23 of the central connection structure 27, and has a plurality of recesses 32 and an equal number of protrusions 33 around it. The protrusions 33 are located between adjacent recesses 32, making the positioning piece 31 resemble a gear.

[0068] Loosen a nut 83, remove a rod 80, other washers 82 and a spring 84, and remove the handle 34 from the pivot 40. Remove a pin 72, and the button 70 can be detached to reveal a tongue 75 and a spring element 77.

[0069] like Figure 6 As shown, the handle 34 extends diagonally from a higher section to a lower ring 35, and an anti-slip texture (unnumbered) is formed on the back of the higher section. A narrow neck 36 stands upright on the back of the ring 35, and the end of the narrow neck 36 has a ball 37, which connects to an oblique hole 38 (see [reference]). Figure 9 The inlet (shown) is located on both sides of the central hole of the ring body 35. The outlet of the oblique hole 38 is located on the front of the ring body 35, and is surrounded by a reinforcement 39, which protrudes at the junction of the ring body 35 and the oblique section to enhance the structural strength of the entire handle 34.

[0070] from Figure 7It is understood that the pivot seat 40 has a body 41, the lower end of which forms a base 42, and an extension 43 protruding from the body 41 near the base 42. The body 41 has three equally spaced locking holes 46, each positioned relative to the hole 26 of the long shaft 24. Each locking hole 46 leads directly to a through hole 45 inside the body 41. The through hole 45 extends from the top of the body 41 to a chamber 44 inside the base 42, such that the through hole 45 is parallel to a positioning hole 60 inside the body 41. Along the radial direction of the through hole 45, the body 41 forms a bead groove 48. The bead groove 48 extends longitudinally to the upper end of the body 41 and has a transverse groove 49 cut into it. The width of the transverse groove 49 is smaller than the diameter of the bead groove 48.

[0071] like Figure 9 As shown, the narrow neck 36 passes through the transverse groove 49, allowing the ball 37 to enter the bead groove 48, supporting the handle 34 to swing relative to the body 41. The ring 35 covers the upper end of the body 41, with the through hole 45 aligned with the center hole of the ring 35, and the entrance of the oblique hole 38 corresponding to a small-diameter segment 61 of the positioning hole 60. The positioning hole 60 also has a spring groove 62 and a sleeve 87. The diameter of the spring groove 62 is larger than the diameter of the small-diameter segment 61, and there is a shoulder 64 between them. The body 41 is injection molded and wrapped around the outside of the sleeve 87 to form a covering portion 63.

[0072] Next, one end of the rod 80 is a threaded section 81, which passes through the spring 84, enters the positioning hole 60, and extends out of the oblique hole 38 and the washer 82, thereby locking the nut 83. The other end of the rod 80 is a head 86 with a polygonal groove (unlabeled) that transmits the torque of a tool (e.g., a screwdriver) to the threaded section 81. One end of the spring 84 resists the shoulder 64, and the other end abuts against a flange 85 in the middle of the rod 80, so that a force from the spring 84 acts on the rod 80, pushing the free end of the head 86 out of the positioning hole 60 and restricting the ring 35 from covering the upper end of the body 41. In addition, the rigidity of the sleeve 87 is greater than that of the body 41, ensuring the smooth movement of the head 86 in and out of the positioning hole 60.

[0073] Furthermore, the long shaft 24 enters the through hole 45 of the pivot seat 40 through the central hole of the ring 35. The three fasteners 47 respectively enter the corresponding locking holes 46 of the pivot seat 40, thereby locking the long shaft 24, fixing the pivot seat 40 to the long shaft 24, and covering the positioning piece 31 with the base 42. The positioning piece 31 is located in the chamber 44, so that the positioning hole 60 communicates with a recess 32 therein. The fastener 90 passes through the gasket 91 and the liner 92, and locks into the free end of the long shaft 24, so that the ring 35 together with the pivot seat 40 is installed between the upper pivot structure 20 and the central pivot structure 27. At the same time, the gasket 93 is fitted over the liner 92 to reduce friction between it and the tube 23 and reduce noise generation.

[0074] from Figure 8 , Figure 9 As shown, the extension 43 has a wall 51 that encloses an assembly chamber 50 for mounting the button 70. Two symmetrical grooves 52 are formed on the inner side of the wall 51. One end of each groove 52 leads to the outlet of the assembly chamber 50, and the other end connects to a bottom 53 of the assembly chamber 50. The bottom 53 connects to the spring groove 62 of the positioning hole 60 via a shaped hole. The assembly chamber 50 has a partition 54 that divides the shaped hole into an elongated hole 55 and a longitudinal hole 56. The longitudinal hole 56 communicates with the spring groove 62. The partition 54 is located at the junction of the longitudinal hole 56 and the spring groove 62. The elongated hole 55 intersects with the spring groove 62 and extends towards the through hole 45.

[0075] like Figure 5 , Figure 9 As shown, the tongue 75 has a positioning hole 78 and a locking hole 79. The tongue 75 is inserted into an inner post 76 of the button 70, such that the positioning hole 78 is located between two through holes 73 of the button 70. The pin 72 is inserted through one of the through holes 73 into the overlapping tongue 75 and inner post 76, so that the tongue 75 is integrated with the button 70 and extends out of the portion of the tongue 75 with the locking hole 79. A hook 74 extends outward from the inner post 76, with its hook end facing the locking hole 79 of the tongue 75.

[0076] from Figure 13 It is understood that in some embodiments, the hook 74 is designed as a separate component, which can be inserted into the inner post 76 and is parallel to the tongue 75. The pin 72 passes through the overlapping hook 74, tongue 75 and inner post 76 to combine the button 70 into one unit.

[0077] Looking back Figure 9When the rod 80 passes through the lock hole 79, the elastic element 77 is fitted around the inner post 76. One end of the elastic element resists the bottom 53 of the assembly chamber 50, while the other end pushes the button 70 out of the extension 43. This causes the tongue 75 to contact the rod 80, preventing the button 70 from popping out of the extension 43. The head 86 partially protrudes from the positioning hole 60 and enters a recess 32 therein, blocking the protrusions 33 on both sides and preventing the door 17 from rotating relative to the fence 16. Therefore, the button 70 is locked. Simultaneously, the tongue 75 moves along the narrow hole 55, contacting the smaller-diameter rod 80 and blocking the larger-diameter head 86, preventing the handle 34 from pulling up relative to the pivot seat 40.

[0078] Furthermore, the button 70 has two symmetrical protruding keys 71 on its exterior. These two keys 71 are aligned with the opposite grooves 52 on the wall 51, guiding the button 70 into the assembly chamber 50. The grooves 52 guide the key 71 to reciprocate, restricting the button 70 to linear displacement and preventing it from rotating relative to the extension 43.

[0079] exist Figure 10 In the process, the button 70 is pushed into the assembly chamber 50, causing the hook 74 and the tongue 75 to move in the same direction. The hook 74 passes over the partition 54, enters the spring groove 62 through the longitudinal hole 56, and, relying on its own elasticity, hooks the partition 54 with its hook end, resisting the force of the elastic element 77 and preventing the button 70 from returning to its original position. The tongue 75 continues to enter the depth of the narrow hole 55, with the locking hole 79 facing the head 86, releasing the locking relationship of the rod 80. At this moment, the button 70 is in the unlocked state.

[0080] exist Figure 11 When the handle 34 is pulled upwards, the ring 35 pulls up the rod 80 via the nut 83, causing the head 86 to pass through the lock hole 79, push open the hook end, and retract into the spring groove 62, no longer obstructing the protrusion 33. At this moment, the flange 85, in conjunction with the shoulder 64, compresses the spring 84, accumulating the elastic force required for reset. Moreover, the hook 74 is free and returns to the longitudinal hole 56. However, the elastic element 77 pushes the button 70 slightly outwards, but does not completely return to its original position. Of course, the door 17 is free and can swing relative to the fence 16 to an angle.

[0081] like Figure 12 As shown, after the handle 34 is released, the spring 84 pushes the flange 85, driving the rod 80 back to its original position. The head 86 inserts into the other recesses 32, blocking the protrusions 33 on both sides, determining the swing amplitude of the door 17, and preventing the rotating guardrail 15 from continuing to open or close. At this moment, the tongue 75 contacts the rod 80, blocking the head 86 again, restoring the handle 34 to its disabled state. Simultaneously, the button 70 returns to its original position, ready for the next use.

[0082] If the handle 34 is pulled up for a short time and then released instantly, the head 86 will usually get stuck in the next recess 32, causing the opening angle of the door 17 to be equivalent to the angle between the two recesses 32.

[0083] If the handle 34 is pulled up for an extended period of time, the door 17 will open to its maximum angle, making it easier for the patient to get out of bed and leave.

[0084] In particular, the operating direction of the button 70 differs from the pulling direction of the handle 34, which is clearly different from the operating mode of prior art. This utility model utilizes a two-handed interactive mode to help medical or caregivers manage the patient's health status, prevent mentally disabled individuals from getting out of bed arbitrarily, protect patient safety, and reduce the chance of needing assistance. Moreover, the button 70, in conjunction with the handle 34, is assembled onto the pivot seat, preserving the structural strength of the basic structure of the rotating guardrail 15, controlling the opening and closing range of the door 17, and relatively extending its service life.

Claims

1. A rotating guardrail safety mechanism, characterized in that, include: A fence (16); A door (17) is rotatably disposed on one side of the fence (16) relative to the fence (16); A positioning piece (31) is fixed between the fence (16) and the gate (17), and its periphery forms a plurality of recesses (32), and the recesses (32) are separated into a plurality of equally spaced protrusions (33); A pivot seat (40) is disposed between the door (17) and the fence (16), and includes: A body (41) is capable of rotating relative to the positioning piece (31); A positioning hole (60) is provided inside the body (41), which can rotate with the body (41) and corresponds to a recess (32) of the positioning piece (31); An assembly chamber (50) is located inside the body (41) and communicates with the positioning hole (60); A handle (34) is pivotally mounted on the body (41); A rod (80) is inserted into the positioning hole (60) and has a pop-out function. One end is connected to the handle (34) and extends out from the body (41), while the other end can be inserted into the recess (32) of the positioning piece (31) and disengage from the recess (32) when the handle (34) is pulled up. A button (70) is located within the assembly chamber (50) and pops out in a direction opposite to the pull-up direction of the handle (34). The button (70) includes: A tongue (75) extends outward from the button (70) and across the positioning hole (60); The tongue (75) forms a keyhole (79) for the rod (80) to pass through; When the tongue (75) does not interfere with the rod (80), the handle (34) can be pulled up; when the tongue (75) blocks the rod (80) from passing through the lock hole (79), the handle (34) is restricted from being pulled up, thereby preventing the door (17) from being opened arbitrarily.

2. The rotating guardrail safety mechanism as described in claim 1, characterized in that: The rod (80) has an enlarged head (86) that passes freely through the lock hole (79). The tongue (75) does not obstruct the rod (80), allowing the handle (34) to be pulled up. The tongue (75) obstructs the head (86), preventing the handle (34) from being pulled up.

3. The rotating guardrail safety mechanism as described in claim 1, characterized in that: The assembly chamber (50) is connected to the positioning hole (60) via an elongated hole (55) and a longitudinal hole (56), and there is a partition (54) between the elongated hole (55) and the longitudinal hole (56); The button (70) also includes a hook (74) extending outward from the button (70), which hooks the partition (54) through the longitudinal hole (56) to keep the button (70) pressed, and guides the tongue (75) into the positioning hole (60) through the elongated hole (55) to restrict the rod (80) from passing through the lock hole (79).

4. The rotating guardrail safety mechanism as described in claim 1, characterized in that: The assembly chamber (50) is connected to the positioning hole (60) via an elongated hole (55) and a longitudinal hole (56), and there is a partition (54) between the elongated hole (55) and the longitudinal hole (56); The button (70) also includes a hook (74) inserted into the button (70) along with the tongue (75). The hook (74) hooks the partition (54) through the longitudinal hole (56) to keep the button (70) pressed. The tongue (75) is guided into the positioning hole (60) through the narrow hole (55) to restrict the rod (80) from passing through the lock hole (79).

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