Device for assisting patients to turn over automatically

Abstract

The present invention belongs to the technical field of rehabilitation medical equipment, and specifically relates to a device for assisting patients to turn over automatically, comprising: two electric rollers and a rotating mechanism arranged on both sides of a bed frame; the rotating mechanism comprises: a driven roller, a guardrail cross tube and a guardrail locking tube; the guardrail locking tube is a hollow tube, and a median column, a spring, a locking tube sliding column and a rotating locking rod are arranged in sequence from the middle to both sides of the guardrail locking tube, the median column is fixedly connected to the guardrail cross tube, a sliding sleeve is arranged on the outer sleeve of the guardrail locking tube, the sliding sleeve is fixedly connected to the locking tube sliding column, and a third long hole is provided on the guardrail locking tube; the rotating locking rod is fixedly connected to the locking tube sliding column, a first through hole is provided on a side plate of a turning frame, at least two locking grooves for the rotating locking rod to penetrate are provided on the swing rod, and the rotating locking rod is parallel to the ear axis of the turning frame; two ends of a bed sheet are wound around the two electric rollers, and the middle passes around the driven roller in sequence; the driven rollers on the left and right sides are adjusted to be one high and one low, and the electric roller is driven to realize turning over of the patient.

Description

Technical Field

[0001] The invention belongs to the technical field of rehabilitation medical equipment, and in particular relates to a device for assisting patients to turn over automatically. Background Art

[0002] The aging of my country's population is getting worse. Currently, more than 13% of the population in my country has reached the age of 60 and the number is still increasing. With the increase of age, the risk of many diseases is getting higher and higher. At an advanced age, many elderly people have varying degrees of disability. According to relevant statistics, there are more than 30 million patients in my country with varying degrees of disability. The most common disability is the inability to move autonomously and turn over in bed. Long-term bed rest can cause damage to some other physiological functions. Since patients cannot move autonomously and compress the same part of the body for a long time, blood circulation will be poor and nerves will be damaged, which will cause local necrosis of the part and form bedsores. Therefore, it is particularly important to help patients turn over frequently.

[0003] Compared with the huge number of patients, my country's medical resources are stretched. And helping patients turn over puts a great physical burden on nursing staff. Most of the existing medical beds in my country are low-priced, low-tech and single-function bed products. With the continuous increase in patient demand, medical beds with diversified functions, high technology content and high degree of automation will have a large market in my country. Summary of the invention

[0004] The purpose of the present invention is to overcome the defect in the prior art that manual assistance is required for patients to turn over, and to provide a device that can assist patients to turn over automatically.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A device for assisting patients to turn over automatically, characterized in that it is fixedly installed on the left and right sides of a bed frame through a mounting base, comprising: two electric rollers and two rotating mechanisms arranged on both sides of the bed frame; the rotating mechanism is located above the electric roller, and the rotating mechanism comprises: a driven roller, a guardrail cross tube and a guardrail locking tube arranged in parallel with each other, and both ends of the three are connected to the side plates of the turning frame; the driven roller can be rotatably connected to the side plates of the turning frame at both ends, and the turning frame side plates can be rotatably connected to the rocker rod; the guardrail locking tube is a hollow tube, and a center column, a spring, a locking tube sliding column and a rotating locking rod are sequentially arranged inside the guardrail locking tube from the middle to both sides; the center column is fixedly connected to the guardrail cross tube through a small turning column passing through the guardrail locking tube, and a sliding sleeve is provided on the outside of the guardrail locking tube. The guardrail lock tube is fixedly connected to the lock tube slide column through a fixing screw, and the guardrail lock tube is provided with a third long hole for the fixing screw to slide therein; the rotating lock rod is fixedly connected to the lock tube slide column, and the side plate of the flip frame is provided with a first through hole for the rotating lock rod to pass through, the side plate of the flip frame is pinned to the rocker arm through the ear axis of the flip frame, and the rocker arm has at least two locking grooves for the rotating lock rod to pass through, and the rotating lock rod is parallel to the ear axis of the flip frame; the two ends of a bed sheet are wrapped around the electric rollers on the left and right sides of the bed frame, and the middle part passes around the driven rollers on the left and right sides of the bed frame in turn; the two ends of the electric roller are supported on the mounting base through bearings; the patient sleeps on the bed sheet, and the driven rollers on the left and right sides are adjusted to be one high and one low, and the electric rollers are driven to achieve turning the patient.

[0007] Furthermore, two fixed columns are provided on both sides of the small flip column, one end of the two fixed columns is fixed on the guardrail locking tube, and the other end is fixed on the guardrail cross tube.

[0008] Furthermore, a turning frame shaft seat is fixed to the outer side of the turning frame side plate, and the turning frame shaft seat has a second through hole corresponding to the first through hole.

[0009] Furthermore, a soft protective sleeve is also provided on the end of the sliding sleeve.

[0010] Furthermore, the mounting base includes a U-shaped base and a base bottom plate fixed to the bottom of the U-shaped base by bolts, and the turning device is installed on the base bottom plate.

[0011] Furthermore, the small flip column and the fixed column are provided with protective covers.

[0012] Furthermore, it also includes a height adjustment mechanism arranged on the front and rear sides of the bed frame, the height adjustment mechanism includes: a lock rotating rod, a lock pull rod, a flip plate bracket, a rocker rod and a push rod, one end of the lock rotating rod is hinged to the mounting base, and the other end is rotatably connected to the lock pull rod, the flip plate bracket is fixed to the mounting base, the flip plate bracket has a first long hole extending vertically, the top end of the lock pull rod has a locking pin, and the locking pin passes through the first long hole; the top end of the flip plate bracket is pin-connected to the rocker rod, and the end of the rocker rod pinned to the flip plate bracket has a slot, when the slot is rotated to the bottom end, the locking pin slides into the slot to lock the rocker rod in the working position; one end of the push rod is pin-connected to the mounting base, and the other end is pin-connected to the rocker rod. The driven roller, guardrail cross tube and guardrail lock tube are arranged parallel to each other, and the ends are connected to a flip frame side plate, and the flip frame side plate is rotatably connected to the other end of the rocker rod; the two ends of the pedal long axis are fixedly connected to the lock rotation rod, and a pedal is fixed in the middle of the pedal long axis.

[0013] Furthermore, the center of gravity of the pedal is located on the inner side of the long axis of the pedal close to the bed frame.

[0014] Furthermore, the middle portion of the locking rod is provided with a positioning shaft, the flip plate bracket is provided with a second long hole extending vertically, and the positioning shaft passes through the second long hole.

[0015] Furthermore, the flip plate bracket has two bracket side plates which are arranged parallel to each other and symmetrically, and the rocker pin is connected between the two bracket side plates.

[0016] Compared with the prior art, the device for assisting patients to turn over automatically of the present invention obviously has the following beneficial effects:

[0017] 1. The bed sheet wrapped around the electric rollers on both sides of the bed frame drives the patient to move, and by adjusting the driven rollers on both sides of the bed frame to a high position and a low position respectively, the patient is turned over while the bed sheet moves; and the guardrail cross pipe is used to prevent the patient from falling off the bed. Assisting the patient to turn over automatically greatly reduces the workload of the nursing staff.

[0018] 2. The power device is electrically driven with very little noise, which ensures a good rest environment for the patient.

[0019] 3. A variety of working states can be switched at will, with strong applicability.

[0020] 4. The space occupied is no different from that of ordinary beds, which can greatly save the limited hospital space. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a three-dimensional structural diagram of the patient flipping state according to an embodiment of the present invention;

[0023] Figure 2 It is a stereoscopic diagram of another viewing angle of the patient state in the embodiment of the present invention;

[0024] Figure 3 2. It is a diagram of a turning device according to an embodiment of the present invention;

[0025] Figure 4 This is a structural diagram of a mounting base according to an embodiment of the present invention;

[0026] Figure 5 It is the structural diagram of the flip plate bracket;

[0027] Figure 6 It is the structure diagram of the lock lever;

[0028] Figure 7 It is the structure diagram of the pendulum;

[0029] Figure 8 It is a diagram of the guardrail lock tube and its internal structure;

[0030] Fig. 9 It is a three-dimensional picture of the guardrail lock tube;

[0031] Fig.10 It is the structural diagram of the side plate of the flip frame;

[0032] Fig.11 This is the structural diagram of the turning frame axle seat.

[0033] In the figure: 1, bed frame, 3, electric roller, 4, pedal long axis, 5, driven roller, 6, guardrail cross tube, 7, guardrail lock tube, 71, third long hole, 8, mounting base, 81, U-shaped card seat, 82, card seat bottom plate, 9, lock rotating rod, 10, lock pull rod, 101, lock pin shaft, 102, positioning shaft, 11, flip plate bracket, 111, first long hole, 112, second long hole, 12, swing rod, 121, Card slot, 122, locking slot, 13, push rod, 14, flip frame side plate, 141, first through hole, 15, pedal, 16, center column, 17, spring, 18, lock tube slide column, 19, rotating lock rod, 20, flip small column, 21, sliding sleeve, 22, fixing screw, 23, flip frame ear shaft, 24, fixed column, 25, flip frame shaft seat, 251, second through hole, 26, protective sleeve, 27, protective cover. DETAILED DESCRIPTION

[0034] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0035] In the description of the present invention, it should be understood that the terms "radial", "axial", "upper", "lower", "left", "right", "front", "rear", etc., indicating directions or positional relationships, are based on directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] like Figure 1-Figure 11 The specific embodiment of the device for assisting patients to turn over automatically of the present invention is fixedly mounted on a bed frame 1 and can be used to transform an ordinary bed. The turning over device comprises: height adjustment mechanisms symmetrically arranged on the front and rear sides of the bed frame 1 and an electric roller 3, a pedal long shaft 4, a driven roller 5, a guardrail cross tube 6 and a guardrail lock tube 7 arranged between the height adjustment mechanisms on both sides. The height adjustment mechanism comprises: a mounting base 8 fixed to the bed frame 1, a lock rotation rod 9, a lock pull rod 10, a flip plate bracket 11, a swing rod 12 and a push rod 13. One end of the lock rotation rod 9 is hinged to the mounting base 8, and the other end is rotatably connected to the lock pull rod 10. The flip plate bracket 11 is fixed to the mounting base 8. Figure 5 As shown, the flip plate bracket 11 has a first long hole 111 extending vertically. Figure 6 As shown, the top end of the lock pull rod 10 has a locking pin 101, and the locking pin 101 passes through the first long hole 111; the top end of the flip plate bracket 11 is pin-connected with the swing rod 12, as shown in FIG. Figure 7As shown, the end of the swing rod 12 pinned to the flip plate bracket 11 has a slot 121. When the slot 121 rotates to the bottom, the locking pin 101 slides into the slot 121 to lock the swing rod 12 in the working position. The middle of the lock pull rod 10 also has a positioning shaft 102. The flip plate bracket 11 has a second long hole 112 extending vertically. The positioning shaft 102 passes through the second long hole 112. One end of the push rod 13 is pinned to the mounting base 8, and the other end is pinned to the swing rod 12. The push rod 13 can be a pneumatic push rod 13 or an electric push rod 13, etc. The pneumatic push rod 13 is adopted in this embodiment. The driven roller 5, the guardrail cross tube 6 and the guardrail lock tube 7 are arranged in parallel with each other, and the ends are all connected to a turning frame side plate 14, and the turning frame side plate 14 can be rotatably connected to the other end of the swing rod 12; the two ends of the pedal long axis 4 are fixedly connected to the lock rotation rod 9, and a pedal 15 is fixed to the middle part of the pedal long axis 4, and the center of gravity of the pedal 15 is located on the inner side of the pedal long axis 4 close to the bed frame 1; the two ends of a bed sheet are wrapped around the electric roller 3 of the turning device on the left and right sides of the bed frame 1, and the middle part passes through the driven roller 5 of the turning device on the left and right sides of the bed frame 1 in turn; the two ends of the electric roller 3 are supported on the mounting base 8 by bearings; the patient sleeps on the bed sheet, and the patient is turned over by adjusting the driven rollers 5 on the left and right sides to be one high and one low, and driving the electric roller 3.

[0038] See also Figure 8The driven roller 5, the guardrail cross tube 6 and the guardrail lock tube 7 are an integral whole. The driven roller 5 can be rotated to the top or the guardrail cross tube 6 can be rotated to the top as needed. The three form a rotating mechanism, which is located above the electric roller 3. The rotating mechanism includes: the driven roller 5, the guardrail cross tube 6 and the guardrail lock tube 7 are arranged in parallel with each other, and both ends of the three are connected to the side plates 14 of the turnover frame; the driven roller 5 can be rotatably connected to the side plates 14 of the turnover frame at both ends, the guardrail lock tube 7 is a hollow tube, and the guardrail lock tube 7 is sequentially provided with a center column 16, a spring 17, a lock tube sliding column 18 and a rotating lock rod 19 from the middle to both sides. In order to position the center column 16, the center column 16 is fixed to the guardrail through a small flip column 20 passing through the guardrail lock tube 7. On the guardrail cross tube 6, a sliding sleeve 21 is provided on the outside of the guardrail lock tube 7, and the sliding sleeve 21 passes through the guardrail lock tube 7 and is fixedly connected to the lock tube slide column 18 through a fixing screw 22. The guardrail lock tube 7 has a third long hole 71 for the fixing screw 22 to slide therein; the rotating lock rod 19 is fixedly connected to the lock tube slide column 18, and the flip frame side plate 14 has a first through hole 141 for the rotating lock rod 19 to pass through. The flip frame side plate 14 and the rocker arm 12 are pinned through the flip frame ear shaft 23, and the rocker arm 12 has at least two locking grooves 122 for the rotating lock rod 19 to penetrate. In this embodiment, there are two locking grooves 122, which can realize the positioning and locking of the flip frame side plate 14 relative to the rocker arm 12 at two positions, and the rotating lock rod 19 is parallel to the flip frame ear shaft 23. The sliding sleeve 21 is slid inward to disengage the rotating lock rod 19 from the swing rod 12, and the side plate 14 of the flip frame can be rotated. The rotating lock rod 19 is inserted into different locking grooves 122 to adjust the orientation of the driven roller 5 and the guardrail cross tube 6.

[0039] The flip small column 20 also has two fixed columns 24 on both sides, and one end of the two fixed columns 24 is fixed on the guardrail lock pipe 7, and the other end is fixed on the guardrail cross pipe 6. For aesthetic purposes, the flip small column 20 and the fixed column 24 are provided with a protective cover 27 outside.

[0040] like Figure 4 As shown, the mounting base includes a U-shaped base 81 and a base bottom plate 82 fixed to the bottom of the U-shaped base by bolts. When the turning device is assembled with a common bed, the opening of the U-shaped base 81 is inserted into the longitudinal beam of the bed frame 1 from top to bottom, and the entire turning device assembled with the base bottom plate 82 is fixedly connected to the U-shaped base 81 by bolts.

[0041] The flip plate bracket 11 has two bracket side plates which are parallel and symmetrically arranged to each other, and the swing rod 12 is pin-connected between the two bracket side plates.

[0042] A turning frame shaft seat 25 is also fixed to the outer side of the turning frame side plate 14 . The turning frame shaft seat 25 has a second through hole 251 corresponding to the first through hole 141 .

[0043] In order to prevent the operator's hand from being pinched when operating the sliding sleeve 21 , a soft protective sleeve 26 is further provided on the end of the sliding sleeve 21 .

[0044] Connected to the side plate 14 of the turning frame are three parallel guardrail transverse tubes 6, guardrail lock tubes 7 and driven rollers 5. The function of the guardrail transverse tube 6 is: when the patient is lying in bed, the swing rod 12 is propped up, and the guardrail transverse tube 6 is located above to prevent the patient from falling off the bed. The function of the driven roller 5 is that when the patient needs to turn over, the swing rod 12 of the turning device on one side is in an upward propping state. At this time, the driven roller 5 should be upward, and the bed sheet bypasses the driven roller 5 and is wrapped around the electric roller 3 to provide power for turning over the patient's body. The middle one is the guardrail lock tube 7. After adjusting the orientation of the guardrail transverse tube 6 and the driven roller 5, the turning frame side plate 14 is locked. When it is necessary to change the working state, the rotating lock rod 19 is separated from the swing rod 12, so that the turning frame side plate 14 can rotate freely.

[0045] Specifically, when the patient gets in or out of bed, he or she steps on the pedal 15, at which time the pedal shaft 4 rotates in the opposite direction, driving the end of the lock rotating rod 9 to move downward, thereby causing the lock pull rod 10 to move downward in the first long hole 111 and the second long hole 112, so that the locking pin 101 is disengaged from the slot 121, allowing the rocker arm 12 to rotate freely again under the action of the push rod 13, until the end of the rocker arm 12 connected to the flip frame side plate 14 drops to a lower position.

[0046] When the patient is in bed, in order to prevent accidents such as the patient rolling off the bed, the swing arm 12 is propped up to a high position and locked by the locking pin 101, and the sliding sleeve 21 is adjusted and pulled. When the side plate 14 of the turning frame is adjusted, the guardrail cross tube 6 is located at the top and the driven roller 5 is located at the bottom.

[0047] In the normal state that the swing rod 12 props up the guardrail cross tube 6, if the patient needs to be turned over, the protective sleeve 26 can be held by hand and dragged to the middle of the guardrail lock tube 7. Driven by the protective sleeve 26, the sliding sleeve 21 drives the lock tube slide column 18 to compress the spring 17 inward, and drives the rotating lock rod 19 to move inward. The rotating lock rod 19 can then be separated from the locking groove 122 on the swing rod 12 and re-circle around the turning frame ear shaft 23. When the driven roller 5 is upward, the rotating lock rod 19 will encounter another locking groove 122. At this time, under the pressure of the spring 17, the rotating lock rod 19 is stuck in the locking groove 122 on the swing rod 12. Thus, the turning frame side plate 14 is locked again. The bed sheet under the patient bypasses the driven roller 5 and is connected to the electric roller 3 under the bed. Press the control button of the electric roller 3, and the electric roller 3 pulls the bed sheet through the driven roller 5 to drag the patient, thereby realizing the automatic operation of turning the patient over.

[0048] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A device for assisting a patient to turn over automatically, characterized in that: The bed frame (1) is fixedly mounted on the left and right sides of the bed frame (1) via a mounting base (8), and comprises: two electric rollers (3) and two rotating mechanisms arranged on the two sides of the bed frame (1); the rotating mechanism is located above the electric roller (3), and the rotating mechanism comprises: a driven roller (5), a guardrail cross pipe (6) and a guardrail locking pipe (7) arranged in parallel with each other, and both ends of the three are connected to the turning frame side plates (14); the driven roller (5) is rotatably connected to the turning frame side plates (14) at both ends, and the turning frame side plates (14) can be rotated. The guardrail lock tube (7) is rotatably connected to the swing rod (12); the guardrail lock tube (7) is a hollow tube, and a center column (16), a spring (17), a lock tube sliding column (18) and a rotating lock rod (19) are arranged in sequence from the middle to the two sides of the guardrail lock tube (7); the center column (16) is fixedly connected to the guardrail cross tube (6) through a small flip column (20) extending from the guardrail lock tube (7); the guardrail lock tube (7) is provided with a sliding sleeve (21) on the outside, and the sliding sleeve (21) passes through the guardrail lock tube (7) through a fixing screw (22). The guardrail lock tube (7) is fixedly connected to the lock tube slide column (18), and the guardrail lock tube (7) has a third long hole (71) for the fixing screw (22) to slide therein; the rotating lock rod (19) is fixedly connected to the lock tube slide column (18), and the flip frame side plate (14) has a first through hole (141) for the rotating lock rod (19) to pass through; the flip frame side plate (14) and the swing rod (12) are pin-connected via a flip frame ear shaft (23), and the swing rod (12) has a first through hole (141) for the rotating lock rod (19) to pass through. (19) is inserted into at least two locking grooves (122), the rotating locking rod (19) is parallel to the ear axis (23) of the turning frame; the two ends of a bed sheet are wrapped around the electric rollers (3) on the left and right sides of the bed frame (1), and the middle part is passed through the driven rollers (5) on the left and right sides of the bed frame (1) in sequence; the two ends of the electric roller (3) are supported on the mounting base (8) through bearings; the patient sleeps on the bed sheet, and the driven rollers (5) on the left and right sides are adjusted to be one high and one low, and the electric roller (3) is driven to realize turning the patient.

2. The device for assisting patients to turn over automatically according to claim 1, characterized in that: The two sides of the small flip column (20) are also provided with two fixed columns (24), one end of the two fixed columns (24) is fixed to the guardrail lock tube (7), and the other end is fixed to the guardrail cross tube (6).

3. The device for assisting patients to turn over automatically according to claim 1, characterized in that: A turning frame shaft seat (25) is also fixed to the outer side of the turning frame side plate (14), and the turning frame shaft seat (25) has a second through hole (251) corresponding to the first through hole (141).

4. The device for assisting patients to turn over automatically according to claim 1, characterized in that: The end of the sliding sleeve (21) is also covered with a soft protective sleeve (26).

5. The device for assisting patients to turn over automatically according to claim 1, characterized in that: The mounting base (8) comprises a U-shaped base (81) and a base bottom plate (82) fixed to the bottom of the U-shaped base (81) by bolts, and the turning device is mounted on the base bottom plate (82).

6. The device for assisting patients to turn over automatically according to claim 2, characterized in that: The small flip pillar (20) and the fixed pillar (24) are provided with protective covers (27) outside.

7. The device for assisting patients to turn over automatically according to claim 5, characterized in that: The bed frame (1) also includes a height adjustment mechanism arranged on the front and rear sides of the bed frame (1) and a pedal shaft (4) arranged between the height adjustment mechanisms on both sides; the height adjustment mechanism includes: a lock rotation rod (9), a lock pull rod (10), a flip plate bracket (11), a swing rod (12) and a push rod (13); one end of the lock rotation rod (9) is hinged to the mounting base (8), and the other end is rotatably connected to the lock pull rod (10); the flip plate bracket (11) is fixed to the mounting base (8); the flip plate bracket (11) has a first long hole (111) extending vertically; the top end of the lock pull rod (10) has a locking pin (101), and the locking pin (101) passes through the first long hole (111); the top end of the flip plate bracket (11) is hinged to the swing rod (1 2) pin connection, the end of the swing rod (12) pinned to the flip plate bracket (11) has a slot (121), when the slot (121) is rotated to the bottom end, the locking pin shaft (101) slides into the slot (121) to lock the swing rod (12) in the working position; one end of the push rod (13) is pinned to the mounting base (8), and the other end is pinned to the swing rod (12); the driven roller (5), the guardrail cross tube (6) and the guardrail lock tube (7) are arranged parallel to each other, and the ends are all connected to a flip frame side plate (14), and the flip frame side plate (14) is rotatably connected to the other end of the swing rod (12); the two ends of the pedal long axis (4) are fixedly connected to the lock rotation rod (9), and a pedal (15) is fixed to the middle of the pedal long axis (4).

8. The device for assisting patients to turn over automatically according to claim 7, characterized in that: The center of gravity of the pedal (15) is located on the inner side of the pedal long axis (4) close to the bed frame (1).

9. The device for assisting patients to turn over automatically according to claim 7, characterized in that: The middle portion of the locking rod (10) also has a positioning shaft (102), the flip plate bracket (11) has a second long hole (112) extending vertically, and the positioning shaft (102) passes through the second long hole (112).

10. The device for assisting patients to turn over automatically according to claim 7, characterized in that: The flip plate bracket (11) has two bracket side plates which are arranged parallel to each other and symmetrically, and the swing rod (12) is pin-connected between the two bracket side plates.

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