Child X-ray imaging auxiliary device for radiology department

Abstract

The invention relates to the technical field of medicine, in particular to a radiology department child X-ray imaging auxiliary device which comprises a base, the top of the base is connected with a bed surface, one side of the bed surface is rotationally connected with a swing plate through a first rotating shaft, and the swing plate is rotationally connected with a supporting table used for supporting a child through a second rotating shaft. The supporting table is connected with an elastic binding belt used for fixing a child. Through cooperation of a first rotating shaft, a swing plate, a second rotating shaft, a supporting table, an elastic binding belt and a driving assembly, a child can be fixed to complete side position shooting, a medical worker does not need to manually hold the child which does not have the autonomous cooperation ability to complete the side position posture, operation is easy, and the X-ray examination and diagnosis efficiency and effect are greatly improved; through cooperation of a U-shaped plate, a third rotating shaft, a clamping arm and a locking mechanism, the arm of the child can be clamped and fixed, and it is effectively prevented that the arm of the child moves at will in the examination process to affect examination.

Description

Technical Field

[0001] This invention relates to the field of medical technology, and in particular to a pediatric X-ray imaging aid for radiology. Background Technology

[0002] With the development of medical imaging technology, X-ray imaging has become an important tool for diagnosing a variety of diseases. It is widely used in clinical practice to diagnose diseases such as fractures, lung infections, and heart abnormalities, playing an indispensable role.

[0003] X-ray diagnostic equipment typically includes an examination bed to assist patients during examinations. Its main function is to support the patient's position to facilitate imaging examinations. While currently used examination beds can meet the needs of routine examinations to some extent, their structure is generally quite simple, consisting of a base and a bed surface. They lack features such as fixation structures for young children and functions to assist in lateral imaging.

[0004] X-ray examinations require not only anteroposterior imaging but also, in some cases, lateral imaging to obtain more comprehensive image information. However, for young children who lack the ability to cooperate independently, traditional examination beds cannot provide effective fixation and positional adjustment support. Medical staff often need to manually support the child or assist them in lateral positioning, which is inconvenient, affects examination efficiency, and may also reduce image quality due to unstable positioning, thus affecting diagnostic results. Summary of the Invention

[0005] The purpose of this invention is to provide a pediatric X-ray imaging auxiliary device for radiology that has the function of fixing young children to complete lateral X-ray imaging in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pediatric X-ray imaging auxiliary device for radiology, comprising a base, a bed surface connected to the top of the base, a swing plate rotatably connected to one side of the bed surface via a pivot shaft, two pivot shafts being provided, the swing plate rotating upwards to contact the top of the bed surface, and the swing plate rotating downwards to contact the bottom of the bed surface, a support platform for supporting a child being rotatably connected to the swing plate via a pivot shaft, an elastic strap for fixing the child being connected to the support platform, a U-shaped plate slidably provided on one side of the support platform, clamping arms for holding the child's arms being rotatably connected to the upper parts of both sides of the U-shaped plate via a pivot shaft, a locking mechanism for locking the pivot shaft being provided on the outside of the U-shaped plate, and a driving component for driving the pivot shaft to rotate on the swing plate.

[0007] Preferably, the clamping arm includes an arc-shaped clamping plate 1 connected to a rotating shaft 3, an arc-shaped clamping plate 2 hinged to the arc-shaped clamping plate 1, an elastic rope connected to the outer wall of the arc-shaped clamping plate 2, and a hanging rod for suspending the elastic rope connected to the outer wall of the arc-shaped clamping plate 1.

[0008] Preferably, the locking mechanism includes a U-shaped insert rod that is slidably disposed outside the U-shaped plate. A spring is connected between the U-shaped insert rod and the U-shaped plate. Insert holes matching the U-shaped insert rod are spaced apart along the circumference of the rotating shaft three. Two positioning blocks are spaced apart along the circumference of the rotating shaft three. Two positioning blocks are connected to both sides of the U-shaped plate. The positioning blocks can rotate to contact the positioning blocks on the same side to position the rotating shaft three.

[0009] Preferably, the drive assembly includes a rotating rod rotatably connected to the swing plate, a worm gear connected to the rotating rod, a worm wheel connected to the second rotating shaft, the worm wheel meshing with the worm gear, and a crank handle connected to the rotating rod.

[0010] Preferably, a head support mechanism is provided on the side of the support platform facing away from the swing plate. The head support mechanism includes a connecting block connected to the side of the support platform facing away from the swing plate. A guide sleeve is rotatably connected to the connecting block. A slide rod is slidably provided inside the guide sleeve. A U-shaped block is connected to the end of the slide rod. A soft pad is connected inside the U-shaped block. An opening is provided on the side of the support platform facing away from the swing plate to provide clearance space for the swing of the slide rod.

[0011] Preferably, a disc is connected to each of the two rotating shafts on opposite sides, and a support block is connected to the eccentric position of the disc. A positioning plate for supporting the support block is slidably provided on the side of the bed surface near the swing plate.

[0012] Preferably, a buffer mechanism is provided on the side of the bottom of the bed surface near the first rotating shaft. The buffer mechanism includes a mounting plate installed on the side of the bottom of the bed surface near the first rotating shaft. A cylinder is mounted on the mounting plate. A piston is slidably connected inside the cylinder. A spring is connected between the piston and the cylinder. Air holes are spaced apart at the top and bottom of the cylinder. A support rod extending out of the cylinder is connected to the top of the piston. A push rod is connected at the eccentric position of the disc. The push rod can rotate to contact the support rod on the same side and push the support rod down.

[0013] Preferably, two support plates are symmetrically connected to the swing plate, and the support plates can contact the top of the bed surface as the swing plate rotates upward.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. Through the cooperation of rotating shaft one, swing plate, rotating shaft two, support platform, elastic strap and drive component, it can fix the child to complete the lateral view imaging. Medical staff do not need to manually support the child who does not yet have the ability to cooperate independently to complete the lateral view posture. The operation is simple and greatly improves the efficiency and effect of X-ray examination and diagnosis. Through the cooperation of U-shaped plate, rotating shaft three, clamp arm and locking mechanism, it can clamp and fix the child's arm, effectively preventing the child's arm from moving randomly during the examination and affecting the examination.

[0015] 2. The U-shaped blocks can support and limit the child's head, effectively preventing the child's head from moving randomly during the examination and affecting the examination. The soft pads can improve comfort and safety, and the position of the U-shaped blocks can be adjusted left and right according to the child's height, thus making it suitable for children of different heights.

[0016] 3. The rotating shaft can be positioned by the cooperation of the disc, support block and positioning plate, thereby positioning the support platform, so that the support platform and elastic strap are kept in an inclined state, so that the child can be placed in the elastic strap.

[0017] 4. The buffer mechanism, consisting of a cylinder, piston, spring 2, strut, push rod, and support plate, can provide buffer support for the support platform to prevent the positioning plate from moving and disengaging from the support block. After the positioning of the rotating shaft 1 is released, the support platform immediately and quickly swings downward, thereby improving stability and safety. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0020] Figure 3 This is a schematic diagram showing the connection between the bed surface, rotating shaft one, swing plate and support platform of the present invention.

[0021] Figure 4 This is a schematic diagram showing the connection between the U-shaped plate, the rotating shaft, and the clamping arm of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the clamping arm and locking mechanism of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the locking mechanism of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the driving component of the present invention.

[0025] Figure 8 This is a schematic diagram of the installation of the head support mechanism and clamping arm of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of the head support mechanism and clamping arm of the present invention.

[0027] Figure 10 This is a schematic diagram of the installation of the head support mechanism and the buffer mechanism of the present invention.

[0028] Figure 11 This is a three-dimensional structural diagram of the buffer mechanism of the present invention.

[0029] Numbered in the diagram: 1-Base, 2-Bed surface, 3-Spinning shaft one, 4-Swing plate, 41-Spinning shaft two, 5-Support platform, 6-Elastic strap, 7-U-shaped plate, 71-Spinning shaft three, 8-Clamping arm, 81-Arc-shaped clamping plate one, 82-Arc-shaped clamping plate two, 83-Elastic rope, 84-Hanging rod, 91-Insertion hole, 92-U-shaped insertion rod, 93-Slot, 94-Guide block, 95-Positioning block one, 96-Positioning block two, 97-Spring one, 101- Rotating rod, 102-worm gear, 103-worm wheel, 104-handle, 111-connecting block, 112-guide sleeve, 113-slide rod, 114-U-shaped block, 115-soft pad, 121-disc, 122-support block, 123-positioning plate, 131-mounting plate, 132-cylinder body, 133-piston, 134-spring two, 135-air hole, 136-support rod, 137-push rod, 14-support plate, 15-X-ray diagnostic equipment. Detailed Implementation

[0030] See Figures 1-7A pediatric X-ray imaging auxiliary device for radiology includes a base 1, a bed surface 2, a first rotating shaft 3, a swing plate 4, a second rotating shaft 41, a support platform 5, an elastic strap 6, a U-shaped plate 7, a third rotating shaft 71, a clamping arm 8, a locking mechanism, and a drive assembly. The bed surface 2 is connected to the top of the base 1. The right sides of both the front and rear sides of the bed surface 2 are rotatably connected to the first rotating shaft 3. The swing plate 4 is connected to the two first rotating shafts 3. The swing plate 4 can rotate upward to contact the top of the bed surface 2, and rotate downward to contact the bottom of the bed surface 2. The right side of the swing plate 4 is curved to ensure smooth up-and-down movement. A pivot 41 is rotatably connected to the center of the swing plate 4. A support platform 5 for supporting the child is connected to the pivot 41. An elastic strap 6 for securing the child is connected to the top of the support platform 5. The elastic strap 6 has a square structure and is made of elastic textile material, which will not interfere with the imaging process of the X-ray diagnostic equipment 15. The side of the elastic strap 6 facing away from the swing plate 4 has an open design, facilitating the placement and removal of the child, while ensuring stability during the examination process. The support platform 5 has grooves on the left side of both the front and rear sides, and sliders are slidably connected in both grooves. A U-shaped plate 7 is connected to the two sliders. Rotary shafts 71 are rotatably connected to the upper parts of both the front and rear sides of the U-shaped plate 7. Clamping arms 8 for holding the child's arms are connected to the ends of the two shafts 71 that are close to each other. Each clamping arm 8 includes an arc-shaped clamping plate 81 connected to the shaft 71. An arc-shaped clamping plate 82 is hinged to the arc-shaped clamping plate 81. The outer wall of the arc-shaped clamping plate 82... An elastic rope 83 is connected to the outer wall of the arc-shaped clamp 81, and a hanging rod 84 for suspending the elastic rope 83 is connected to it. A locking mechanism for locking the rotating shaft 71 is provided on the outside of the U-shaped plate 7. A drive assembly for driving the rotating shaft 41 to rotate is provided on the swing plate 4. The drive assembly includes a rotating rod 101 rotatably connected to the front side of the swing plate 4. A worm gear 102 is connected to the rear side of the rotating rod 101. A worm wheel 103 is connected to the rotating shaft 41. The worm wheel 103 meshes with the worm gear 102. A crank handle 104 is connected to the front end of the rotating rod 101.

[0031] See Figures 4-6The locking mechanism includes a U-shaped insert 92 disposed outside the U-shaped plate 7. A slot 93 is formed on both the front and rear sides of the U-shaped insert 92. Guide blocks 94 are connected to both the front and rear sides of the U-shaped plate 7. The two guide blocks 94 are located within the two slots 93, respectively, and are used to guide and limit the lifting and lowering movement of the U-shaped insert 92. Two springs 97 are symmetrically connected between the inner bottom surface of the U-shaped insert 92 and the bottom of the U-shaped plate 7. Four insertion holes 91 matching the U-shaped insert 92 are spaced apart along the circumferential direction on the rotating shaft 71. The four insertion holes 91 are interconnected. Two positioning blocks 96 are spaced apart along the circumferential direction on the rotating shaft 71. Two positioning blocks 95 are connected to both the front and rear sides of the U-shaped plate 7. The positioning blocks 96 can rotate to contact the positioning blocks 95 on the same side to position the rotating shaft 71, thereby positioning the clamping arm 8 and preventing excessive rotation of the clamping arm 8, ensuring that the clamping arm 8 rotates accurately upwards or downwards by 90 degrees.

[0032] When placing this device in front of the X-ray diagnostic equipment 15, and performing X-ray examinations on young children who are not yet capable of independent cooperation, first rotate the swing plate 4 to the upper left until it is horizontal and in close contact with the top of the bed surface 2. The support platform 5 then rotates the elastic strap 6 to the upper left until it is horizontal. Next, place the child inside the elastic strap 6, securing the child to the support platform 5 for subsequent orthogonal imaging. Place the child's arms into the arc-shaped clamps 81 of the two clamping arms 8, then rotate and close the arc-shaped clamp 82. Hang the elastic rope 83 on the hanging rod 84, locking the arc-shaped clamp 82 onto the arc-shaped clamp 81. The cooperation of the arc-shaped clamps 81 and 82 effectively clamps and secures the child's arms, preventing uncontrolled arm movement during the examination. By moving the U-shaped plate 7 to the left or right, the position of the clamping arm 8 can be adjusted to accommodate children of different heights.

[0033] When a side view is required, first pull the U-shaped insert 92 downwards out of the insert 91 to release the lock on the rotating shaft 71. The spring 97 will then be stretched. Then rotate the clamping arm 8 to the upper left to a vertical position (see...). Figure 8 This allows the child's arms to be raised to a vertical position. Releasing the U-shaped insert 92, under the reset action of spring 97, causes the U-shaped insert 92 to insert upwards into the corresponding insertion hole 91, relocking the rotating shaft 71, thereby locking the clamping arm 8. Then, rotating the crank 104 drives the rotating rod 101 to drive the worm gear 102 to rotate, which in turn drives the worm wheel 103 to drive the rotating shaft 41 to rotate, thereby causing the support platform 5 and its components to rotate 45 degrees around the rotating shaft 41. The support platform 5 and the elastic strap 6 then rotate to a vertical position, thereby rotating the child to a side-lying position (see...). Figure 9This facilitates subsequent side-view photography of the young child. At this time, the clamping arm 8 rotates around the pivot 41 to a horizontal position and faces forward (see...). Figure 9 This allows the child's arms to face forward, preventing them from obstructing the lateral imaging. Thus, this device effectively secures the child for lateral imaging, eliminating the need for medical staff to manually support the child who lacks the ability to cooperate independently. The operation is simple, greatly improving the efficiency and effectiveness of X-ray examinations. Removing the elastic rope 83 from the hanging rod 84 releases the lock on the arc-shaped clamp 82, loosening the child's arms, and then the child can be taken out from the elastic strap 6. Rotating the swing plate 4 to the lower right side of the bed surface 2 (see...) Figure 3 This causes the support platform 5 and its components to rotate to the lower right, creating space so that adult patients or young children with the ability to cooperate can lie on the bed 2 for X-ray examination and diagnosis.

[0034] See Figure 8 A head support mechanism is provided on the side of the support platform 5 facing away from the swing plate 4. The head support mechanism includes two sets of connecting blocks 111 connected to the side of the support platform 5 facing away from the swing plate 4. Each set of connecting blocks 111 consists of two blocks, which are arranged one in front of the other. The connecting blocks 111 are L-shaped. Each set of connecting blocks 111 is rotatably connected to a guide sleeve 112. A sliding rod 113 is slidably provided inside the guide sleeve 112. A U-shaped block 114 is connected between the ends of the two sliding rods 113. A soft pad 115 is connected inside the U-shaped block 114. The side of the support platform 5 facing away from the swing plate 4 has two openings, one in front and one behind, to provide clearance space for the swing of the sliding rod 113.

[0035] The U-shaped block 114 supports and limits the child's head, effectively preventing the child's head from moving freely during the examination and affecting the examination. The soft pad 115 enhances comfort and safety. At the same time, the position of the U-shaped block 114 can be adjusted left and right according to the child's height, thus accommodating children of different heights.

[0036] See Figure 2 and Figure 10 Two rotating shafts 3 are connected to a disc 121 on opposite sides. A support block 122 is connected to the eccentric position of the disc 121. A guide groove is opened on the right side of the bed surface 2. A positioning plate 123 for supporting the support block 122 is slidably connected in the guide groove.

[0037] When placing a child into the elastic strap 6, first move the positioning plate 123 to the right, then cause the swing plate 4 to swing the support platform 5 upwards to an inclined state. During this process, the rotating shaft 3 drives the disc 121 to rotate, thereby causing the support block 122 to rotate until it contacts the top of the positioning plate 123. The positioning plate 123 supports the positioning support block 122, thereby positioning the rotating shaft 3 and the swing plate 4, and thus positioning the support platform 5, so that the support platform 5 remains in an inclined state (see...). Figure 10 This keeps the elastic strap 6 tilted, making it easier to place the child inside. Before placing the child inside the elastic strap 6, rotate the U-shaped block 114 to the left, so that the U-shaped block 114 is away from the elastic strap 6, making it easier to place the child inside. After the child is placed inside the elastic strap 6, rotate the U-shaped block 114 back to the right and move the U-shaped block 114 to the right until it is below the child's head, to support and limit the child's head. Move the positioning plate 123 to the left until it disengages from the support block 122, thereby releasing the positioning of the rotating shaft 3. Under the action of gravity, the support platform 5 swings to the lower left to a horizontal position.

[0038] See Figures 10-11 The bottom right side of the bed surface 2 is provided with two front and rear buffer mechanisms. The two buffer mechanisms are located on the left side of the two rotating shafts 3 respectively. The buffer mechanism includes a mounting plate 131 connected to the bottom right side of the bed surface 2. A cylinder 132 is mounted on the mounting plate 131. A piston 133 is slidably connected inside the cylinder 132. A spring 134 is connected between the top of the piston 133 and the top of the inner side of the cylinder 132. There are two air holes 135 spaced apart at the top and bottom of the cylinder 132. A support rod 136 extending outside the cylinder 132 is connected to the top of the piston 133. The support rod 136 is slidably engaged with the top of the cylinder 132. The support rod 136 is L-shaped. Push rods 137 are connected to the eccentric positions of the two discs 121 on opposite sides. The push rods 137 can rotate to contact the support rods 136 on the same side and push the support rods 136 downward.

[0039] As the disc 121 rotates the support block 122 until it contacts the top of the positioning plate 123, it also rotates the push rod 137 until it contacts the support rod 136 on the same side. At this time, under the combined action of the gas in the cylinder 132, the piston 133, and the second spring 134, the support rod 136 provides buffer support for the push rod 137. This prevents the positioning plate 123 from moving to the left and disengaging from the support block 122, thus releasing the positioning of the rotating shaft 3. After this, the support platform 5 immediately and quickly swings downwards and to the left, thereby improving stability and safety. When the positioning plate 123 moves to the left and disengages from the support block 122, releasing the positioning of the rotating shaft 3, the support platform 5 swings downwards and to the left under the action of gravity. This causes the rotating shaft 3 to continue rotating via the swing plate 4, which in turn causes the push rod 137 to rotate and press down on the support rod 136 via the disc 121. The downward movement of the strut 136 pushes the piston 133 downward, stretching the second spring 134. The downward movement of the piston 133 draws outside air into the cylinder 132 through the upper air hole 135, and discharges the gas in the lower part of the cylinder 132 through the lower air hole 135, thus providing buffer support for the support platform 5 and further preventing it from falling rapidly. When the swing plate 4 drives the support platform 5 to swing to the lower right side of the bed surface 2, the rotating shaft 3 reverses and drives the disc 121 to reverse, causing the push rod 137 to disengage from the strut 136. Under the reset action of the second spring 134, the piston 133 is pulled upward, moving the strut 136 back to its original position. The upward movement of the piston 133 draws outside air into the cylinder 132 through the lower air hole 135, and discharges the gas in the upper part of the cylinder 132 through the upper air hole 135.

[0040] See Figure 2 Two support plates 14 are symmetrically connected to the front and back of the swing plate 4. The support plates 14 can rotate upward with the swing plate 4 and contact the top of the bed surface 2, thereby improving the support stability.

Claims

1. A pediatric X-ray imaging aid for radiology, comprising a base (1), with a bed surface (2) connected to the top of the base (1), characterized in that, A swing plate (4) is rotatably connected to one side of the bed surface (2) via a pivot (3). There are two pivots (3). The swing plate (4) can rotate upward to contact the top of the bed surface (2) and rotate downward to contact the bottom of the bed surface (2). A support platform (5) for supporting a toddler is rotatably connected to the swing plate (4) via a pivot (41). An elastic strap (6) for fixing the toddler is connected to the support platform (5). A U-shaped plate (7) is slidably provided on one side of the support platform (5). The upper parts of both sides of the U-shaped plate (7) are rotatably connected to clamp arms (8) for holding the toddler's arms via a pivot (71). A locking mechanism for locking the pivot (71) is provided on the outside of the U-shaped plate (7). A drive assembly for driving the pivot (41) to rotate is provided on the swing plate (4).

2. The pediatric X-ray imaging auxiliary device for radiology according to claim 1, characterized in that, The clamp arm (8) includes an arc-shaped clamp plate (81) connected to a rotating shaft (71), an arc-shaped clamp plate (82) hinged to the arc-shaped clamp plate (81), an elastic rope (83) connected to the outer wall of the arc-shaped clamp plate (82), and a hanging rod (84) for suspending the elastic rope (83) connected to the outer wall of the arc-shaped clamp plate (81).

3. The pediatric X-ray imaging auxiliary device for radiology according to claim 2, characterized in that, The locking mechanism includes a U-shaped insert (92) that is slidably disposed outside the U-shaped plate (7). A spring (97) is connected between the U-shaped insert (92) and the U-shaped plate (7). The rotating shaft (71) has circumferentially spaced insertion holes (91) that match the U-shaped insert (92). Two positioning blocks (96) are circumferentially spaced on the rotating shaft (71). Two positioning blocks (95) are connected to both sides of the U-shaped plate (7). The positioning blocks (96) can rotate to contact the positioning blocks (95) on the same side to position the rotating shaft (71).

4. The pediatric X-ray imaging auxiliary device for radiology according to claim 3, characterized in that, The drive assembly includes a rotating rod (101) rotatably connected to the swing plate (4), a worm gear (102) connected to the rotating rod (101), a worm wheel (103) connected to the rotating shaft (41), the worm wheel (103) meshing with the worm gear (102), and a crank handle (104) connected to the rotating rod (101).

5. A pediatric X-ray imaging auxiliary device for radiology according to claim 4, characterized in that, A head support mechanism is provided on the side of the support platform (5) facing away from the swing plate (4). The head support mechanism includes a connecting block (111) connected to the side of the support platform (5) facing away from the swing plate (4). A guide sleeve (112) is rotatably connected to the connecting block (111). A slide rod (113) is slidably provided inside the guide sleeve (112). A U-shaped block (114) is connected to the end of the slide rod (113). A soft pad (115) is connected inside the U-shaped block (114). An opening is provided on the side of the support platform (5) facing away from the swing plate (4) to provide clearance space for the swing of the slide rod (113).

6. A pediatric X-ray imaging auxiliary device for radiology according to claim 5, characterized in that, Two rotating shafts (3) are connected to a disc (121) on the side away from each other. A support block (122) is connected to the eccentric position of the disc (121). A positioning plate (123) for supporting the support block (122) is slidably provided on the side of the bed surface (2) near the swing plate (4).

7. A pediatric X-ray imaging auxiliary device for radiology according to claim 6, characterized in that, A buffer mechanism is provided on the bottom side of the bed surface (2) near the rotating shaft (3). The buffer mechanism includes a mounting plate (131) installed on the bottom side of the bed surface (2) near the rotating shaft (3). A cylinder (132) is installed on the mounting plate (131). A piston (133) is slidably connected inside the cylinder (132). A spring (134) is connected between the piston (133) and the cylinder (132). Air holes (135) are spaced apart at the top and bottom of the cylinder (132). A support rod (136) extending outside the cylinder (132) is connected to the top of the piston (133). A push rod (137) is connected to the eccentric position of the disc (121). The push rod (137) can rotate to contact the support rod (136) on the same side and push the support rod (136) to move down.

8. A pediatric X-ray imaging auxiliary device for radiology according to claim 7, characterized in that, Two support plates (14) are symmetrically connected to the swing plate (4). The support plates (14) rotate upward with the swing plate (4) and can contact the top of the bed surface (2).

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