A controllable neck cold compress device

Abstract

This invention discloses an adjustable neck cooling device, comprising a connecting rod with multiple housings movably connected to it. Each housing houses a cooling mechanism, a support mechanism, a transmission mechanism, and a drive mechanism. A flexible pad is provided on the support mechanism. The transmission mechanism is movably connected to the support mechanism. The drive mechanism is movably connected to both the transmission mechanism and the cooling mechanism. A positioning mechanism is provided on the connecting rod, and connecting mechanisms are provided at both ends of the connecting rod. A controller is also provided on the connecting rod, electrically connected to the cooling mechanism and the drive mechanism. The device described in this invention is more convenient to use and avoids causing frostbite to the patient, further improving the practicality and convenience of the device.

Description

Technical Field

[0001] This invention relates to an adjustable neck cooling device. Background Technology

[0002] When neck problems arise, doctors typically perform surgery on the neck depending on the specific condition. After surgery, to alleviate postoperative swelling and swallowing difficulties, nurses apply ice packs to the patient. However, ice packs, made from frozen liquid, melt and drip during use. This dripping can cause discomfort to the neck and the patient, and also dampen the patient's clothing. Furthermore, ice packs cannot be applied to the affected area for extended periods, as this can lead to frostbite and further discomfort. To avoid these problems, nurses must frequently remove and place the ice pack, making it extremely inconvenient to use.

[0003] Based on this, the present invention designs an adjustable neck cold compress device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable neck cold compress device to solve the problem mentioned in the background art that the ice compress process can cause liquid production and secondary damage to the patient.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable neck cooling device, comprising a connecting rod, to which multiple housings are movably connected, each housing containing a cooling mechanism, a support mechanism, a transmission mechanism, and a drive mechanism, the support mechanism having a flexible pad, the transmission mechanism being movably connected to the support mechanism, the drive mechanism being movably connected to the transmission mechanism and the cooling mechanism respectively, the connecting rod having a positioning mechanism, the connecting rod having connecting mechanisms at both ends, and the connecting rod having a controller, the controller being electrically connected to the cooling mechanism and the drive mechanism.

[0006] As a further embodiment of the present invention, the refrigeration mechanism includes a first rotating column, a combination mechanism, and a temperature controller. A plurality of first rotating columns are rotatably connected inside the housing, and the plurality of first rotating columns are drivenly connected. A combination mechanism is installed on the first rotating column. The combination mechanism includes a cooling plate and a pad, which form a complete circle. The cooling plate and the pad are fixedly connected to the first rotating column. A temperature controller is installed inside the housing, and the temperature controller is electrically connected to the cooling plate. Both the cooling plate and the pad are located on the underside of the flexible pad.

[0007] As a further embodiment of the present invention, the support mechanism includes a support rod, a first spring, and a protrusion. Two support rods are slidably connected inside the housing. The support rods are n-shaped. Two first springs are fixedly connected between the support rods and the bottom surface of the inner wall of the housing. A protrusion is installed on the bottom surface of the support rods. The flexible pad is located between the two support rods.

[0008] As a further embodiment of the present invention, the transmission mechanism includes a drive shaft, a cam, a self-locking mechanism, a transmission rod, and a first gear. The drive shaft is rotatably connected inside the housing, and two cams are mounted on the drive shaft. The cams are movably connected to the protrusions. The drive shaft is provided with a self-locking mechanism. The transmission rod is rotatably connected inside the housing, and the transmission rod is meshed with the drive shaft. The first gear is mounted on the transmission rod.

[0009] As a further embodiment of the present invention, the self-locking mechanism includes a fixed disk, a lock groove, a rotating disk, a second spring, and a lock block. The fixed disk is fixedly connected to one side of the inner wall of the housing. Multiple lock grooves are opened in the fixed disk. The rotating disk is rotatably connected to the fixed disk. The rotating disk is fixedly connected to the drive shaft. Multiple second springs are fixedly connected in the rotating disk. A lock block is installed at one end of each second spring. The lock block is movably connected in the lock groove.

[0010] As a further embodiment of the present invention, the driving mechanism includes a second rotating column, a third rotating column, a second gear, a drive motor, a telescopic rod, and a block. The second rotating column is rotatably connected inside the housing, and the second rotating column is drivingly connected to one of the first rotating columns. The third rotating column is rotatably connected inside the housing, and a second gear is mounted on the third rotating column. The second gear and the first gear mesh with each other. The drive motor is mounted inside the housing, and a telescopic rod is fixedly connected to the output end of the drive motor. A block is mounted on the telescopic rod, and the block is movably connected to the second rotating column and the third rotating column.

[0011] As a further embodiment of the present invention, the positioning mechanism includes a positioning sleeve, a positioning rod and a groove. The positioning sleeve is installed on one side of the housing and is slidably connected to the connecting rod. The positioning rod is threadedly connected to the positioning sleeve, and a groove is provided on the other side of the housing.

[0012] As a further embodiment of the present invention, the connecting mechanism includes a connecting block, a slot, and a locking block. One end of the connecting rod is fixedly connected to the connecting block, the connecting block has a slot, the other end of the connecting rod is fixedly connected to the locking block, and the locking block is movably connected in the slot.

[0013] In this invention, when the device is placed on the patient's neck, the cooling mechanism cools the cooling plate via a temperature controller, resulting in a low-temperature effect. This low temperature is then transmitted through a flexible pad, allowing the device to apply ice to the area requiring icing. This avoids direct cooling that could harm the patient's neck. The cooling plate also prevents liquid buildup during icing, which would limit its long-term use. The cooling plate can continuously provide icing. After a period of icing, to prevent frostbite and discomfort from prolonged icing, the drive mechanism controls the support mechanism, creating tension on the flexible pad surface and a gap between the housing and the neck. The drive mechanism then rotates the cooling mechanism, replacing the cooling plate with the pad. This allows the device to remain in place on the neck without removal or manual handling, preventing prolonged icing and discomfort. Furthermore, when icing is needed again, the device can be readjusted for a second application, making icing more convenient and comfortable. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a top-view structural schematic diagram of a preferred embodiment of an adjustable neck cooling device according to the present invention.

[0016] Figure 2 This is a partial frontal view structural schematic diagram of a preferred embodiment of an adjustable neck cooling device according to the present invention.

[0017] Figure 3 This is a partial rear-view structural schematic diagram of a preferred embodiment of an adjustable neck cooling device according to the present invention.

[0018] Figure 4 A partial anterior cross-sectional view of a preferred embodiment of an adjustable neck cooling device according to the present invention. Figure 1 ;

[0019] Figure 5 A partial anterior cross-sectional view of a preferred embodiment of an adjustable neck cooling device according to the present invention. Figure 2 ;

[0020] Figure 6This is a partial posterior view sectional structural schematic diagram of a preferred embodiment of an adjustable neck cooling device of the present invention.

[0021] Figure 7 This is a partial lower-view internal structure diagram of a preferred embodiment of the adjustable neck cooling device of the present invention. Figure 1 ;

[0022] Figure 8 This is a partial right-side view of the internal structure of a preferred embodiment of an adjustable neck cooling device according to the present invention.

[0023] Figure 9 This is a partial lower-view internal structure diagram of a preferred embodiment of the adjustable neck cooling device of the present invention. Figure 2 ;

[0024] Figure 10 for Figure 9 Enlarged view of point A in the middle.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Connecting rod; 2. Housing; 3. Refrigeration mechanism; 4. First rotating column; 5. Combination mechanism; 6. Cooling plate; 7. Pad plate; 8. Temperature controller; 9. Support mechanism; 10. Support rod; 11. First spring; 12. Protrusion; 13. Transmission mechanism; 14. Drive shaft; 15. Cam; 16. Self-locking mechanism; 17. Transmission rod; 18. First gear; 19. Fixed plate; 20. Lock groove; 21. Rotating plate; 22. Second spring; 23. Locking block; 24. Drive mechanism; 25. Second rotating column; 26. Third rotating column; 27. Second gear; 28. Drive motor; 29. ​​Telescopic rod; 30. Slotted block; 31. Positioning mechanism; 32. Positioning sleeve; 33. Positioning rod; 34. Groove; 35. Connecting mechanism; 36. Connecting block; 37. Slot; 38. Locking block; 39. Controller; 40. Flexible pad. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-10The present invention provides a technical solution: an adjustable neck cold compress device, comprising a connecting rod 1, a plurality of housings 2 movably connected to the connecting rod 1, a cooling mechanism 3 disposed within the housing 2, a support mechanism 9 disposed within the housing 2, a flexible pad 40 disposed on the support mechanism 9, a transmission mechanism 13 disposed within the housing 2, the transmission mechanism 13 being movably connected to the support mechanism 9, a drive mechanism 24 disposed within the housing 2, the drive mechanism 24 being movably connected to the transmission mechanism 13 and the cooling mechanism 3 respectively, a positioning mechanism 31 disposed on the connecting rod 1, a connecting mechanism 35 disposed at both ends of the connecting rod 1, and a controller 39 disposed on the connecting rod 1, the controller 39 being electrically connected to the cooling mechanism 3 and the drive mechanism 24.

[0029] During operation, the positioning mechanism 31 is adjusted according to the location on the patient's neck requiring ice application, releasing the positioning mechanism 31. Then, the housing 2 is pulled along the connecting rod 1 until it reaches the desired ice application location. The positioning mechanism 31 is then fixed, ensuring the housing 2 fits snugly against the ice application area. The two ends of the connecting rod 1 are then connected via the connecting mechanism 35. At this point, the cooling mechanism 3 is controlled by the controller 39 to provide cooling. The patient can adjust the temperature of the cooling mechanism 3 to suit the ice application temperature. After the device has been providing ice application for a period of time, preventing frostbite, the drive mechanism 24 and the support mechanism 9 are engaged, causing the drive mechanism 24 to control the support mechanism 9 to expand. The flexible pad 40 gradually moves away from the cooling mechanism 3, reducing the distance between the neck and the cooling mechanism 3. A gap is created, and during the adjustment of the support mechanism 9, the self-locking mechanism 16 works simultaneously. After the support mechanism 9 is adjusted, the drive mechanism 24 is disengaged from the support mechanism 9. At this time, the self-locking mechanism 16 fixes the support mechanism 9 and simultaneously controls the drive mechanism 24 to engage with the cooling mechanism 3. Then, the drive mechanism 24 drives the parts in the cooling mechanism 3 to rotate, thereby moving the cooling plate 6 in the cooling mechanism 3 away from the flexible pad 40. At this time, the pad 7 is located under the flexible pad 40, which stops the ice application. The flexible pad 40 provides comfort, and the flexible pad 40 is equipped with a heating component that can be adjusted as needed. Then, the drive mechanism 24 is controlled to reconnect with the support mechanism 9, so that the support mechanism 9 is reset, thus moving the ice application position away from the neck. The pad 7 then replaces the ice application position, making it more suitable for the neck.

[0030] This invention utilizes a metal tube as the connecting rod 1 in the device, allowing it to be bent into different shapes during use. This enables the housing 2 to be arranged in a ring, thus adapting the device to the shape of the neck. A positioning mechanism 31 on the housing 2 can move and fix it, allowing it to be moved according to the patient's desired ice application location. This makes the device more convenient to use and ensures more precise ice application. When the device is placed on the patient's neck, the cooling mechanism 3 cools the cooling plate 6 via a temperature controller 8, resulting in a low-temperature effect. This low temperature is transmitted through the flexible pad 40, allowing the device to apply ice to the patient's desired location while avoiding direct cooling that could harm the patient's neck. Furthermore, the use of the cooling plate 6 prevents the device from producing liquid during ice application, thus avoiding prolonged use. The cooling plate 6 can also provide continuous cooling. When applying ice, to prevent frostbite and discomfort caused by prolonged ice application, the support mechanism 9 can be controlled by the drive mechanism 24 to create tension on the surface of the flexible pad 40, thus creating a gap between the housing 2 and the neck. The drive mechanism 24 then rotates the cooling mechanism 3, causing the pad 7 to replace the cooling plate 6. This allows the device to remain on the neck without removal or manual handling, preventing discomfort from prolonged ice application. Furthermore, when ice application is needed again, the device can be readjusted for easier and more comfortable use. The support mechanism 9, by expanding the flexible pad 40, prevents the cooling mechanism 3 from compressing the patient's affected area during rotation, ensuring safety during adjustment and further improving the device's practicality and ice application effect. This makes ice application more comfortable and precise.

[0031] As a further embodiment of the present invention, the refrigeration mechanism 3 includes a first rotating column 4, a combination mechanism 5, and a temperature controller 8. Multiple first rotating columns 4 are rotatably connected inside the housing 2 and are connected by transmission. The combination mechanism 5 is installed on the first rotating column 4. The combination mechanism 5 includes a cooling plate 6 and a pad 7. The cooling plate 6 and the pad 7 form a complete circle. The cooling plate 6 and the pad 7 are fixedly connected to the first rotating column 4. The temperature controller 8 is installed inside the housing 2 and is electrically connected to the cooling plate 6. The cooling plate 6 and the pad 7 are both located on the lower side of the flexible pad 40.

[0032] In this embodiment, the temperature controller 8 allows the cooling plate 6 to adapt to different temperatures, thus enabling the device to meet the patient's needs. During the ice application process, the cooling plate 6 effectively delivers the cooling effect to the patient's affected area through the flexible pad 40. When the patient does not need ice application, the control drive mechanism 24 drives the first rotating column 4 to rotate. At this time, the first rotating column 4 drives the cooling plate 6 and the pad 7 to rotate. When the cooling plate 6 and the pad 7 rotate, the pad 7 rotates from the lower side to the upper side, while the cooling plate 6 rotates from the upper side to the lower side, thereby completing the replacement of the two. This allows the device to be replaced without removal, making the device more convenient and quick to use.

[0033] As a further embodiment of the present invention, the support mechanism 9 includes a support rod 10, a first spring 11, and a protrusion 12. Two support rods 10 are slidably connected inside the housing 2. The support rods 10 are n-shaped. Two first springs 11 are fixedly connected between the support rods 10 and the bottom surface of the inner wall of the housing 2. The protrusion 12 is installed on the bottom surface of the support rods 10. A flexible pad 40 is located between the two support rods 10. The control drive mechanism 24 is used to drive the transmission mechanism 13 to work. At this time, the cam 15 in the transmission mechanism 13 presses the protrusion 12, causing the support rod 10 to move upward. At the same time, the first spring 11 is stretched. When the support rod moves upward, the flexible pad 40 moves upward at the same time. At this time, the tension of the flexible pad 40 creates a certain gap between the cooling mechanism 3 and the affected area, which makes the adjustment of the cooling mechanism 3 more convenient. At the same time, it avoids the cooling mechanism 3 pressing on the affected area during adjustment, which could cause secondary injury to the patient. This further improves the practicality and convenience of the device.

[0034] As a further embodiment of the present invention, the transmission mechanism 13 includes a drive shaft 14, cams 15, a self-locking mechanism 16, a transmission rod 17, and a first gear 18. The drive shaft 14 is rotatably connected inside the housing 2. Two cams 15 are mounted on the drive shaft 14, and the cams 15 are movably connected to the protrusions 12. The drive shaft 14 is provided with a self-locking mechanism 16. The transmission rod 17 is rotatably connected inside the housing 2, and the transmission rod 17 is meshed with the drive shaft 14. The first gear 18 is mounted on the transmission rod 17.

[0035] When the drive mechanism 24 drives the transmission rod 17 to rotate, the transmission rod 17 drives the drive shaft 14 to rotate. When the drive shaft 14 rotates, the cam 15 installed on the drive shaft 14 squeezes the protrusion 12, which in turn causes the support mechanism 9 to move upward, and then causes the flexible pad 40 to move upward, thereby creating a gap between the device and the affected area, which further improves the adjustment stability and the safety of the device.

[0036] As a further embodiment of the present invention, the self-locking mechanism 16 includes a fixed disk 19, a locking groove 20, a rotating disk 21, a second spring 22, and a locking block 23. The fixed disk 19 is fixedly connected to one side of the inner wall of the housing 2. A plurality of locking grooves 20 are opened in the fixed disk 19. The rotating disk 21 is rotatably connected to the fixed disk 19. The rotating disk 21 is fixedly connected to the drive shaft 14. A plurality of second springs 22 are fixedly connected in the rotating disk 21. A locking block 23 is installed at one end of the second spring 22. The locking block 23 is movably connected in the locking groove 20.

[0037] When the drive shaft 14 rotates, the rotating disk 21 rotates simultaneously. When the rotating disk 21 rotates, the second spring 22 installed on the rotating disk 21 is compressed, and at this time the locking block 23 moves in the locking groove 20, thereby fixing the positions of the fixed disk 19 and the rotating disk 21. This makes it easier for the cam 15 to remain in a fixed position when the drive mechanism 24 and the transmission mechanism 13 are disengaged, thus making the equipment more convenient and stable during adjustment.

[0038] As a further embodiment of the present invention, the drive mechanism 24 includes a second rotating column 25, a third rotating column 26, a second gear 27, a drive motor 28, a telescopic rod 29, and a block 30. The second rotating column 25 is rotatably connected inside the housing 2, and the second rotating column 25 is connected to one of the first rotating columns 4 in a transmission connection. The third rotating column 26 is rotatably connected inside the housing 2, and the second gear 27 is mounted on the third rotating column 26. The second gear 27 meshes with the first gear 18. The drive motor 28 is mounted inside the housing 2, and the output end of the drive motor 28 is fixedly connected to the telescopic rod 29. The block 30 is mounted on the telescopic rod 29, and the block 30 is movably connected to the second rotating column 25 and the third rotating column 26 respectively.

[0039] During operation, when the telescopic rod 29 extends, the locking block 38 on the telescopic rod 29 engages with the second telescopic rod 29. At this time, the drive mechanism 24 can control the refrigeration mechanism 3 to work, thereby enabling the refrigeration mechanism 3 to switch. When the telescopic rod 29 retracts, the locking block 38 on the telescopic rod 29 and the third rotating column 26 rotate. When the third rotating column 26 rotates, the second gear 27 on the third rotating column 26 drives the first gear 18 to rotate, thereby enabling the transmission mechanism 13 to work, which in turn causes the support mechanism 9 to open, thereby controlling the adjustment of the equipment and making the adjustment of the equipment more convenient and faster.

[0040] As a further embodiment of the present invention, the positioning mechanism 31 includes a positioning sleeve 32, a positioning rod 33 and a groove 34. The positioning sleeve 32 is installed on one side of the housing 2 and is slidably connected to the connecting rod 1. The positioning rod 33 is threadedly connected to the positioning sleeve 32, and the groove 34 is provided on the other side of the housing 2.

[0041] During operation, rotating the positioning rod 33 changes its position on the positioning sleeve 32. Then, pulling the housing 2 allows it to move. When the housing 2 moves to the appropriate position, rotating the positioning rod 33 again locks it onto the positioning sleeve 32. Simultaneously, as the housing 2 moves, the two housings 2 can be brought closer together. At this time, the positioning sleeve 32 can be placed in the groove 34 on the other housing 2, thereby reducing the gap between the two housings 2 and making the equipment more convenient to use.

[0042] As a further embodiment of the present invention, the connecting mechanism 35 includes a connecting block 36, a slot 37 and a locking block 38. One end of the connecting rod 1 is fixedly connected to the connecting block 36, the connecting block 36 is provided with a slot 37, and the other end of the connecting rod 1 is fixedly connected to the locking block 38, which is movably connected in the slot 37.

[0043] In practical use, place the device on the neck and fold the connecting rod 1 according to the location of the ice pack. Since the connecting rod 1 is a metal tube, it can be folded without changing its shape. Then, snap the locking block 38 into the slot 37 in the connecting block 36, which makes it easier to fix the device and further improves the practicality and convenience of the device.

Claims

1. A controllable neck cold compress device comprising a connecting rod (1), characterized in that: Multiple housings (2) are movably connected to the connecting rod (1). Each housing (2) is provided with a refrigeration mechanism (3), a support mechanism (9), a transmission mechanism (13), and a drive mechanism (24). A flexible pad (40) is provided on the support mechanism (9). The transmission mechanism (13) and the support mechanism (9) are movably connected. The drive mechanism (24) is movably connected to the transmission mechanism (13) and the refrigeration mechanism (3) respectively. A positioning mechanism (31) and a controller (39) are provided on the housing (2). A connecting mechanism (35) is provided at both ends of the connecting rod (1). The controller (39) is electrically connected to the refrigeration mechanism (3) and the drive mechanism (24). The refrigeration mechanism (3) includes a first rotating column (4), a combination mechanism (5) and a temperature controller (8). Multiple first rotating columns (4) are rotatably connected inside the housing (2). The multiple first rotating columns (4) are connected by transmission. A combination mechanism (5) is installed on the first rotating column (4). The combination mechanism (5) includes a cooling plate (6) and a pad (7). The cooling plate (6) and the pad (7) form a complete circle. The cooling plate (6) and the pad (7) are fixedly connected to the first rotating column (4). A temperature controller (8) is installed inside the housing (2). The temperature controller (8) and the cooling plate (6) are electrically connected. The cooling plate (6) and the pad (7) are both located on the lower side of the flexible pad (40). The support mechanism (9) includes a support rod (10), a first spring (11) and a protrusion (12). Two support rods (10) are slidably connected inside the housing (2). The support rods (10) are N-shaped. Two first springs (11) are fixedly connected between the support rods (10) and the bottom surface of the inner wall of the housing (2). A protrusion (12) is installed on the bottom surface of the support rods (10). The flexible pad (40) is located between the two support rods (10). The transmission mechanism (13) includes a drive shaft (14), a cam (15), a self-locking mechanism (16), a transmission rod (17), and a first gear (18). The drive shaft (14) is rotatably connected inside the housing (2). Two cams (15) are mounted on the drive shaft (14). The cams (15) and the protrusions (12) are movably connected. The drive shaft (14) is provided with a self-locking mechanism (16). The transmission rod (17) is rotatably connected inside the housing (2). The transmission rod (17) and the drive shaft (14) are meshed. The first gear (18) is mounted on the transmission rod (17). The drive mechanism (24) includes a second rotating column (25), a third rotating column (26), a second gear (27), a drive motor (28), a telescopic rod (29), and a block (30). The second rotating column (25) is rotatably connected inside the housing (2). The second rotating column (25) and one of the first rotating columns (4) are connected in a transmission connection. The third rotating column (26) is rotatably connected inside the housing (2). The second gear (27) is installed on the third rotating column (26). The second gear (27) and the first gear (18) mesh with each other. The drive motor (28) is installed inside the housing (2). The output end of the drive motor (28) is fixedly connected to the telescopic rod (29). The block (30) is installed on the telescopic rod (29). The block (30) is movably connected to the second rotating column (25) and the third rotating column (26) respectively.

2. The adjustable neck cooling device according to claim 1, characterized in that: The self-locking mechanism (16) includes a fixed disk (19), a lock groove (20), a rotating disk (21), a second spring (22), and a lock block (23). The fixed disk (19) is fixedly connected to one side of the inner wall of the housing (2). Multiple lock grooves (20) are opened in the fixed disk (19). The rotating disk (21) is rotatably connected to the fixed disk (19). The rotating disk (21) is fixedly connected to the drive shaft (14). Multiple second springs (22) are fixedly connected in the rotating disk (21). A lock block (23) is installed at one end of the second spring (22). The lock block (23) is movably connected in the lock groove (20).

3. The adjustable neck cooling device according to claim 1, characterized in that: The positioning mechanism (31) includes a positioning sleeve (32), a positioning rod (33) and a groove (34). The positioning sleeve (32) is installed on one side of the housing (2). The positioning sleeve (32) is slidably connected to the connecting rod (1). The positioning rod (33) is threadedly connected to the positioning sleeve (32). The groove (34) is provided on the other side of the housing (2).

4. The adjustable neck cooling device according to claim 1, characterized in that: The connecting mechanism (35) includes a connecting block (36), a slot (37) and a block (38). One end of the connecting rod (1) is fixedly connected to the connecting block (36), the connecting block (36) has a slot (37) on it, and the other end of the connecting rod (1) is fixedly connected to the block (38). The block (38) is movably connected in the slot (37).

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