阅读说明：本技术 一种蝶泳训练机器人 (Butterfly stroke training robot ) 是由 杨树芬 于 2021-01-15 设计创作，主要内容包括：本发明提供一种蝶泳训练机器人,包括底板、腿部滑板、腿部软垫、腿部减震弹簧、小腿垫、牵引绳、砝码牵引连杆、砝码等；手臂中心轴连杆上固定安装有牵引绳,牵引绳上固定安装砝码牵引连杆；腿部软垫上转动安装有小腿垫,腿部软垫下方设置有腿部滑轨,腿部软垫可以在腿部滑轨上滑动,本发明可以完成一套蝶泳泳姿,并且可以达到力量训练目的机器人。(The invention provides a butterfly stroke training robot which comprises a bottom plate, a leg sliding plate, a leg cushion, a leg damping spring, a shank cushion, a traction rope, a weight traction connecting rod, weights and the like, wherein the bottom plate is provided with a base; a traction rope is fixedly arranged on the arm central shaft connecting rod, and a weight traction connecting rod is fixedly arranged on the traction rope; the butterfly swimming device can complete a set of butterfly swimming strokes and can achieve the aim of strength training.)

1. A butterfly stroke training robot, comprising: the device comprises a base plate (1), an arm trainer upright post (2), a chest and abdomen pad upright post (3), a first fixed pulley upright post (10), a second fixed pulley upright post (11), a fixed pulley (12), an arm sliding cylinder (13), an arm spring (14), a chest and abdomen pad sliding cylinder (15), a chest and abdomen pad spring (16), a chest and abdomen pad (17), an arm central shaft sleeve (18), an arm central shaft movable gap (19), an arm first connecting rod (20), an arm second connecting rod (21), a bracelet fixing ring (22), an arm first connecting rod pulley bracket (23), an arm second connecting rod traction rope fixing frame (24), an arm first connecting rod pulley (25), an arm central shaft traction rope matching hole (26), an arm central shaft connecting rod (27), a leg training mechanism and a weight mechanism;

the arm training device is characterized in that two arm training device upright columns (2) are fixedly installed on the bottom plate (1), arm springs (14) are fixedly installed on the arm training device upright columns (2), arm center shaft sleeves (18) are fixedly installed above the arm springs (14), arm sliding cylinders (13) are fixedly installed below the arm center shaft sleeves (18), and the arm sliding cylinders (13) are sleeved inside the arm springs (14) and are installed with the arm training device upright columns (2) in a sliding mode; arm center pin sleeve (18) in install arm center pin connecting rod (27), arm center pin connecting rod (27) include: an arm center shaft center rod (2701), an arm center shaft vertical inclined connecting rod (2702), an arm center shaft telescopic connecting ring (2703) and an arm center shaft center rod hinge seat (2704); an arm center shaft center rod (2701) on an arm center shaft connecting rod (27) is rotatably installed with an arm center shaft sleeve (18), an arm first connecting rod (20) is rotatably connected to arm center shaft center rod hinged seats (2704) at two ends, an arm first connecting rod pulley support (23) is fixedly installed on the arm first connecting rod (20), an arm first connecting rod pulley (25) is rotatably installed on the arm first connecting rod pulley support (23), an arm second connecting rod (21) is installed at the other end of the arm first connecting rod (20), an arm second connecting rod traction rope fixing frame (24) is arranged on the side face of the arm second connecting rod (21), and a bracelet fixing ring (22) is fixedly installed above the tail end of the arm second connecting rod (21);

an arm central shaft movable gap (19) is formed in the arm central shaft sleeve (18), arm central shaft traction rope matching holes (26) are fixedly arranged on the left side and the right side, tension spring ropes are fixedly arranged on arm second connecting rod traction rope fixing frames (24) at the left end and the right end, and the tension spring ropes penetrate through an arm first connecting rod pulley (25) and the arm central shaft traction rope matching holes (26); the bottom plate (1) is fixedly provided with two chest and abdomen pad upright columns (3), the chest and abdomen pad upright columns (3) are fixedly provided with chest and abdomen cushion springs (16), the upper ends of the chest and abdomen cushion springs (16) are fixedly provided with chest and abdomen cushions (17), two chest and abdomen cushion sliding cylinders (15) are fixedly arranged below the chest and abdomen cushions (17), and the chest and abdomen cushion sliding cylinders (15) are sleeved inside the chest and abdomen cushion springs (16) and are slidably arranged with the chest and abdomen pad upright columns (3); a leg training mechanism and a weight mechanism are sequentially arranged on the rear side of the bottom plate (1) from left to right.

2. The vertical automatic packaging robot of claim 1, wherein the leg training mechanism comprises: the leg cushion comprises a leg slide rail first upright post (4), a leg slide rail second upright post (5), a leg slide rail (6), a leg spring (7), a leg sliding block (8), a leg sliding plate (28), a leg sliding plate upright post (29), a leg cushion rotating frame (30), a leg cushion (31), a leg damping support (32), a leg damping cylinder (33), a leg damping spring (34), a leg damping spring shaft (35), a shank cushion (36), an ankle fixing ring (37) and a shank cushion damping mounting seat (38);

the leg cushion turning mechanism is characterized in that four leg slide rail first upright columns (4) are fixedly mounted on a bottom plate (1), leg slide rails (6) are fixedly mounted on the leg slide rail first upright columns (4), leg slide blocks (8) are slidably mounted on the leg slide rails (6), the four leg slide blocks (8) are fixedly mounted on leg sliding plates (28), leg springs (7) are respectively and fixedly mounted on the two leg slide blocks (8), the other ends of the leg springs (7) are fixedly mounted on the leg slide rail first upright columns (4), leg slide upright columns (29) and leg damping supports (32) are fixedly mounted on the leg sliding plates (28), leg cushion turning frames (30) are mounted on the leg slide upright columns (29), and leg cushions (31) are mounted on the leg cushion turning frames (30);

the leg cushion (31) includes: a leg cushion main body (3101), a leg cushion connecting groove (3102), a leg cushion connecting hole (3103), a leg cushion hinging seat (3104) and a leg cushion gap space (3105); the leg cushion hinge base (3104) below the leg cushion (31) and the leg cushion rotating frame (30) are rotatably installed, a shank cushion (36) is rotatably installed on a shank cushion connecting groove (3102) and a shank cushion connecting hole (3103), an ankle fixing ring (37) is arranged on the shank cushion (36), a shank cushion shock-absorbing mounting base (38) is arranged below the shank cushion (36), a leg shock-absorbing cylinder (33) is rotatably installed on the leg shock-absorbing support (32), a leg shock-absorbing spring shaft (35) is slidably installed in the leg shock-absorbing cylinder (33), one end of the leg shock-absorbing spring (34) is fixedly connected with the leg shock-absorbing spring shaft (35), the other end of the leg shock-absorbing spring shaft is fixedly connected with the leg shock-absorbing cylinder (33), and the top of the leg shock-absorbing spring shaft (35) is rotatably connected with the shank cushion shock-.

3. The vertical automatic packaging robot as claimed in claim 1, wherein the weight mechanism comprises: the weight traction device comprises a weight column (9), a weight column fixed pulley (39), a traction rope (40), a weight traction connecting rod (41), a weight traction connecting rod hole (42), a weight sliding column (43), a weight (44) and a weight pin (45);

the weight traction device is characterized in that two weight columns (9) are fixedly installed on the base plate (1), a weight column fixed pulley (39) is fixedly and rotatably installed on the weight columns (9), a weight sliding column (43) is fixedly installed on the base plate (1), weights (44) are placed on the weight sliding column (43), a weight pin (45) is inserted into the weights (44) to be matched with the weights, a weight traction connecting rod (41) is arranged in the weights (44), a weight traction connecting rod hole (42) is formed in the weight traction connecting rod (41), and the weight pin (45) is inserted into the weight traction connecting rod hole (42) to be fixed together with the weight traction connecting rod hole; a traction rope (40) is fixedly installed above the weight traction connecting rod (41), a first fixed pulley upright post (10) and a second fixed pulley upright post (11) are arranged in the middle of the front end and the rear end of the bottom plate (1), fixed pulleys (12) are arranged on the first fixed pulley upright post (10) and the second fixed pulley upright post (11), and the traction rope (40) penetrates through the two fixed pulleys (12) to be fixedly connected with an arm center shaft telescopic connecting ring (2703).

Technical Field

The invention relates to the technical field of robots, in particular to a butterfly stroke training robot.

Background

As more and more people are building up body, swimming is also a very good aerobic exercise, which can improve the heart and lung function well, but at present, there are few swimming pools, and people are troublesome to go to the swimming pool for swimming, so a device which can complete butterfly swimming training in a room is needed, for example, CN201510114485.1 discloses a butterfly swimming posture land trainer, which comprises: the top ends of all the lugs are connected together to form a relatively smooth wave curved surface so as to finish a set of butterfly stroke actions, but the invention can only finish the training of swimming postures and cannot finish the training of strength; CN201120472500.7 discloses a butterfly swimming type whole body fitness device, comprising: the adjustable bed, the gear device and the soft cushion are characterized in that the adjustable bed is composed of a handle, a plate surface and a steel pipe foot rest, and the soft cushion is positioned on the central plate surface of the adjustable bed; a gear device is arranged between the adjusting bed and the soft cushion, and the gear is connected with the handle and the soft cushion of the adjusting bed, so that the invention can only complete simple training contents of upper limbs, can not complete the whole set of actions of butterfly stroke training, and has poor training effect;

therefore, a robot which can complete a set of butterfly swimming strokes and can achieve the purpose of strength training is needed to solve the problems.

Disclosure of Invention

Aiming at the problems, the invention provides a butterfly stroke training robot which is simple in structure and convenient to use and can finish training of butterfly stroke indoors.

The technical scheme adopted by the invention is as follows: a butterfly stroke training robot comprises a bottom plate, an arm trainer stand column, a chest and abdomen pad stand column, a first fixed pulley stand column, a second fixed pulley stand column, a fixed pulley, an arm sliding cylinder, an arm spring, a chest and abdomen pad sliding cylinder, a chest and abdomen pad spring, a chest and abdomen pad, an arm central shaft sleeve, an arm central shaft movable gap, an arm first connecting rod, an arm second connecting rod, a bracelet fixing ring, an arm first connecting rod pulley support, an arm second connecting rod traction rope fixing frame, an arm first connecting rod pulley, an arm central shaft traction rope matching hole, an arm central shaft connecting rod, a leg training mechanism and a weight mechanism;

the arm central shaft connecting rod comprises an arm central shaft central rod, an arm central shaft vertical inclined connecting rod, an arm central shaft telescopic connecting ring and an arm central shaft central rod hinging seat;

the leg cushion comprises a leg cushion main body, a leg cushion connecting groove, a leg cushion connecting hole, a leg cushion hinged seat and a leg cushion gap space;

leg training mechanism includes: the leg damping device comprises a leg sliding rail first upright post, a leg sliding rail second upright post, a leg sliding rail, a leg spring, a leg sliding block, a leg sliding plate upright post, a leg cushion rotating frame, a leg cushion, a leg damping support, a leg damping cylinder, a leg damping spring shaft, a shank cushion, an ankle fixing ring and a shank cushion damping mounting seat;

the weight mechanism includes: the weight traction device comprises a weight upright column, a weight upright column fixed pulley, a traction rope, a weight traction connecting rod hole, a weight sliding upright column, weights and weight pins;

the base plate is fixedly provided with two arm trainer stand columns, arm springs are fixedly arranged on the arm trainer stand columns, arm center shaft sleeves are fixedly arranged above the arm springs, arm sliding cylinders are fixedly arranged below the arm center shaft sleeves, and the arm sliding cylinders are sleeved inside the arm springs and are slidably arranged with the arm trainer stand columns; an arm central shaft connecting rod is installed in the arm central shaft sleeve, an arm central shaft on the arm central shaft connecting rod is rotatably installed with the arm central shaft sleeve, arm first connecting rods are rotatably connected to arm central shaft hinged seats at two ends, an arm first connecting rod pulley support is fixedly installed on the arm first connecting rod, an arm first connecting rod pulley is rotatably installed on the arm first connecting rod pulley support, an arm second connecting rod is installed at the other end of the arm first connecting rod, an arm second connecting rod traction rope fixing frame is arranged on the side face of the arm second connecting rod, and a bracelet fixing ring is fixedly installed above the tail end of the arm second connecting rod; an arm central shaft movable gap is formed in the arm central shaft sleeve, arm central shaft traction rope matching holes are fixedly formed in the left side and the right side of the arm central shaft sleeve, tension spring ropes are fixedly mounted on arm second connecting rod traction rope fixing frames at the left end and the right end of the arm central shaft, and the tension spring ropes penetrate through the arm first connecting rod pulley and the arm central shaft traction rope matching holes; the bottom plate is fixedly provided with two breast and abdomen pad stand columns, the breast and abdomen pad stand columns are fixedly provided with breast and abdomen cushion springs, the upper ends of the breast and abdomen cushion springs are fixedly provided with breast and abdomen cushions, two breast and abdomen cushion sliding cylinders are fixedly arranged below the breast and abdomen cushion springs, and the breast and abdomen cushion sliding cylinders are sleeved in the breast and abdomen cushion springs and are arranged with the breast and abdomen pad stand columns in a sliding manner; the leg cushion connecting device comprises a bottom plate, a leg sliding rail, four leg sliding blocks, leg springs, leg cushion connecting seats, leg cushion connecting grooves and leg cushion connecting holes, wherein the bottom plate is fixedly provided with four leg sliding rail first stand columns, the leg sliding rail is fixedly provided with the leg sliding blocks, the four leg sliding blocks are fixedly arranged on a leg sliding plate, the two leg sliding blocks are respectively and fixedly provided with the leg springs, the other end of each leg spring is fixedly arranged on the leg sliding rail first stand column, the leg sliding plate is fixedly provided with the leg sliding plate stand column and the leg damping support, the leg cushion rotating frame is arranged on the leg sliding plate stand column, the leg cushion rotating frame is provided with a leg cushion, the leg cushion hinge seat below the leg cushion is rotatably arranged with the leg cushion rotating frame, the leg cushion connecting grooves and the leg cushion connecting holes are rotatably provided with leg cushions, the leg cushion fixing rings are arranged on the leg cushions, a leg damping spring shaft is slidably mounted in the leg damping cylinder, one end of the leg damping spring is fixedly connected with the leg damping spring shaft, the other end of the leg damping spring is fixedly connected with the leg damping cylinder, and the top of the leg damping spring shaft is rotatably connected with a shank pad damping mounting seat; the weight traction connecting rod is arranged in the weight, a weight traction connecting rod hole is formed in the weight traction connecting rod, and the weight pin is inserted into the weight traction connecting rod hole and fixed together with the weight traction connecting rod hole; a traction rope is fixedly mounted above the weight traction connecting rod, a first fixed pulley column and a second fixed pulley column are arranged in the middle of the front end and the rear end of the bottom plate, fixed pulleys are arranged on the first fixed pulley column and the second fixed pulley column, and the traction rope penetrates through the two fixed pulleys and the arm center shaft telescopic connecting ring to be fixedly connected.

The invention has the beneficial effects that:

(1) the butterfly stroke training robot is simple in structure and convenient to use; the action of butterfly stroke is simulated, and the training effect can be achieved without launching water;

(2) the robot for butterfly stroke training can move, and can adapt to more body sizes;

(3) the weight of the robot for butterfly stroke training is adjustable, and the robot can adapt to people with different strength.

Drawings

Fig. 1 and 2 are schematic diagrams of the overall mechanism of the present invention.

Fig. 3 and 4 are schematic views of the three-dimensional assembly of the present invention.

Fig. 5 is a schematic view of the structure of the leg pad of the present invention.

FIG. 6 is a schematic view of the arm center shaft link of the present invention.

Reference numerals: 1-bottom plate, 2-arm trainer upright post, 3-thoracoabdominal pad upright post, 4-leg slide rail first upright post, 5-leg slide rail second upright post, 6-leg slide rail, 7-leg spring, 8-leg slide block, 9-weight upright post, 10-first fixed pulley upright post, 11-second fixed pulley upright post, 12-fixed pulley, 13-arm sliding cylinder, 14-arm spring, 15-thoracoabdominal pad sliding cylinder, 16-thoracoabdominal pad spring, 17-thoracoabdominal pad, 18-arm central shaft sleeve, 19-arm central shaft movable gap, 20-arm first connecting rod, 21-arm second connecting rod, 22-hand ring fixing ring, 23-arm first connecting rod pulley support, 24-arm second connecting rod traction rope fixing frame, 25-arm first connecting rod pulley, 26-arm central shaft traction rope matching hole, 27-arm central shaft connecting rod, 28-leg sliding plate, 29-leg sliding plate upright post, 30-leg cushion rotating frame, 31-leg cushion, 32-leg damping support, 33-leg damping cylinder, 34-leg damping spring, 35-leg damping spring shaft, 36-shank cushion, 37-ankle fixing ring, 38-shank cushion damping mounting seat, 39-weight upright post fixed pulley, 40-traction rope, 41-weight traction connecting rod, 42-traction weight connecting rod hole, 43-weight sliding upright post, 44-weight, 45-weight pin, 2701-arm central shaft central rod, 2702-arm central shaft vertical inclined connecting rod, 2703-arm central shaft telescopic connecting ring, 2704-arm central shaft center rod hinging seat, 3101-leg cushion main body, 3102-crus pad connecting groove, 3103-crus pad connecting hole, 3104-leg cushion hinging seat and 3105-leg cushion gap space.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

In an embodiment, as shown in fig. 1, 2, 3, 4, 5 and 6, a butterfly stroke training robot includes a base plate 1, an arm trainer column 2, a chest-abdomen pad column 3, a leg slide rail first column 4, a leg slide rail second column 5, a leg slide rail 6, a leg spring 7, a leg slider 8, a weight column 9, a first fixed pulley column 10, a second fixed pulley column 11, a fixed pulley 12, an arm slide cylinder 13, an arm spring 14, a chest-abdomen cushion slide cylinder 15, a chest-abdomen cushion spring 16, a chest-abdomen cushion 17, an arm central shaft sleeve 18, an arm central shaft movable gap 19, an arm first link 20, an arm second link 21, a bracelet fixing ring 22, an arm first link pulley support 23, an arm second link traction rope fixing frame 24, an arm first link pulley 25, an arm central shaft traction rope matching hole 26, an arm central shaft link rod 27, a butterfly stroke training robot, A leg sliding plate 28, a leg sliding plate column 29, a leg cushion rotating frame 30, a leg cushion 31, a leg damping support 32, a leg damping cylinder 33, a leg damping spring 34, a leg damping spring shaft 35, a shank cushion 36, an ankle fixing ring 37, a shank cushion damping mounting seat 38, a weight column fixed pulley 39, a traction rope 40, a weight traction link 41, a weight traction link hole 42, a weight sliding column 43, a weight 44 and a weight pin 45; the arm center shaft link 27 includes an arm center shaft 2701, an arm center shaft vertical inclined link 2702, an arm center shaft telescopic link ring 2703, and an arm center shaft hinge base 2704; a leg cushion 31 including a leg cushion body 3101, a shank cushion connecting groove 3102, a shank cushion connecting hole 3103, a leg cushion hinge base 3104, a leg cushion gap space 3105;

two arm trainer stand columns 2 are fixedly arranged on the bottom plate 1, arm springs 14 are fixedly arranged on the arm trainer stand columns 2, arm center shaft sleeves 18 are fixedly arranged above the arm springs 14, arm sliding cylinders 13 are fixedly arranged below the arm center shaft sleeves 18, and the arm sliding cylinders 13 are sleeved inside the arm springs 14 and are slidably arranged with the arm trainer stand columns 2; an arm central shaft connecting rod 27 is installed in the arm central shaft sleeve 18, an arm central shaft center rod 2701 on the arm central shaft connecting rod 27 and the arm central shaft sleeve 18 are rotatably installed, arm first connecting rods 20 are rotatably connected to arm central shaft center rod hinged seats 2704 at two ends, an arm first connecting rod pulley support 23 is fixedly installed on the arm first connecting rod 20, an arm first connecting rod pulley 25 is rotatably installed on the arm first connecting rod pulley support 23, an arm second connecting rod 21 is installed at the other end of the arm first connecting rod 20, an arm second connecting rod traction rope fixing frame 24 is arranged on the side face of the arm second connecting rod 21, and a hand ring fixing ring 22 is fixedly installed above the tail end of the arm second connecting rod 21; an arm central shaft movable gap 19 is arranged on the arm central shaft sleeve 18, arm central shaft traction rope matching holes 26 are fixedly arranged on the left side and the right side, tension spring ropes are fixedly arranged on arm second connecting rod traction rope fixing frames 24 at the left end and the right end, and the tension spring ropes pass through an arm first connecting rod pulley 25 and the arm central shaft traction rope matching holes 26; two thoracico-abdominal pad upright posts 3 are fixedly arranged on the bottom plate 1, thoracico-abdominal pad springs 16 are fixedly arranged on the thoracico-abdominal pad upright posts 3, thoracico-abdominal pads 17 are fixedly arranged at the upper ends of the thoracico-abdominal pad springs 16, two thoracico-abdominal pad sliding cylinders 15 are fixedly arranged below the thoracico-abdominal pads 17, and the thoracico-abdominal pad sliding cylinders 15 are sleeved inside the thoracico-abdominal pad springs 16 and are slidably arranged with the thoracico-abdominal pad upright posts 3; the leg cushion rotating frame is characterized in that four leg slide rail first upright columns 4 are fixedly mounted on a bottom plate 1, leg slide rails 6 are fixedly mounted on the leg slide rail first upright columns 4, leg slide blocks 8 are slidably mounted on the leg slide rails 6, the four leg slide blocks 8 are fixedly mounted on leg slide plates 28, leg springs 7 are respectively fixedly mounted on the two leg slide blocks 8, the other ends of the leg springs 7 are fixedly mounted on the leg slide rail first upright columns 4, leg slide plate upright columns 29 and leg damping supports 32 are fixedly mounted on the leg slide plates 28, and leg cushion rotating frames 30 are mounted on the leg slide plate upright columns 29;

in an optional implementation manner of the embodiment of the present invention, except for the same structure as the above embodiment, the leg cushion rotating frame 30 is provided with a leg cushion 31, a leg cushion hinge seat 3104 below the leg cushion 31 is rotatably installed with the leg cushion rotating frame 30, a lower leg cushion 36 is rotatably installed on a lower leg cushion connecting groove 3102 and a lower leg cushion connecting hole 3103, the lower leg cushion 36 is provided with an ankle fixing ring 37, a lower leg cushion shock-absorbing mounting seat 38 is arranged below the lower leg cushion 36, a leg shock-absorbing cylinder 33 is rotatably installed on the leg shock-absorbing support 32, a leg shock-absorbing spring shaft 35 is slidably installed in the leg shock-absorbing cylinder 33, one end of the leg shock-absorbing spring 34 is fixedly connected with the leg shock-absorbing spring shaft 35, the other end of the leg shock-absorbing spring shaft is fixedly connected with the leg shock-absorbing cylinder 33, and the top of the; the weight traction device is characterized in that two weight columns 9 are fixedly installed on the base plate 1, weight column fixed pulleys 39 are fixedly and rotatably installed on the weight columns 9, weight sliding columns 43 are fixedly installed on the base plate 1, weights 44 are placed on the weight sliding columns 43, weight pins 45 are inserted into the weights 44 to be matched with the weights, weight traction connecting rods 41 are arranged in the weights 44, weight traction connecting rod holes 42 are formed in the weight traction connecting rods 41, and the weight pins 45 are inserted into the weight traction connecting rod holes 42 and fixed with the weight traction connecting rods; a traction rope 40 is fixedly arranged above the weight traction connecting rod 41, a first fixed pulley upright post 10 and a second fixed pulley upright post 11 are arranged in the middle parts of the front end and the rear end of the bottom plate 1, fixed pulleys 12 are arranged on the first fixed pulley upright post 10 and the second fixed pulley upright post 11, and the traction rope 40 penetrates through the two fixed pulleys 12 and is fixedly connected with an arm central shaft telescopic connecting ring 2703.

The working principle of the invention is as follows: during the use, the abdomen of training person presses on chest abdomen cushion 17, the shank is placed on shank cushion 31, the arm is placed on first connecting rod 20 of arm and arm second connecting rod 21, it is fixed that the solid fixed ring 22 of bracelet is passed through to both hands, it is fixed that the foot passes through the solid fixed ring 37 of ankle, training person's arm motion drives arm center pin connecting rod 27 and rotates, and then drive the motion of haulage rope 40 through fixed pulley 12, and on the same way, training person's foot motion drives shank slide 28 and slides on shank slide rail 6, thereby reach the purpose of butterfly stroke training.

In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be embodied in many different forms other than those described herein, and it will be apparent to those skilled in the art that similar modifications may be made without departing from the spirit of the invention, and therefore the invention is not limited to the specific embodiments disclosed above.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.