Prenatal delivery auxiliary training device for pregnant woman for obstetrical nursing

Abstract

The invention discloses a pregnant woman antenatal delivery auxiliary training device for obstetrical nursing, and belongs to the technical field of pregnant woman antenatal delivery training, the pregnant woman antenatal delivery auxiliary training device comprises a supporting frame assembly, a resistance adjusting structure and a controllable limiting protection mechanism, the resistance adjusting structure is arranged on the supporting frame assembly, and the resistance adjusting structure comprises a driving structure and a sliding structure; the controllable limiting protection mechanism comprises a transmission structure and an adjusting limiting structure. By arranging the resistance adjusting structure and the controllable limiting protection mechanism, different exercise requirements of different pregnant women can be met, the pregnant women can be continuously protected in the exercise process of the pregnant women, and the situation that the pregnant women are hurt due to force disengaging in the exercise process is avoided; the problems that most of existing pregnant woman delivery auxiliary training devices in the current market are simple in design and single in function, sufficient resistance adjustment and safety protection cannot be provided, and individual training requirements of different pregnant women are difficult to meet are effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of antenatal delivery training for pregnant women, and specifically refers to an antenatal delivery auxiliary training device for pregnant women in obstetric care. Background Art

[0002] In the field of obstetric care, prenatal delivery training for pregnant women is an important part of ensuring the safety of mothers and babies and improving the efficiency of delivery. Traditional delivery training methods rely on verbal instructions and simulation demonstrations, lacking actual physical assistance and personalized resistance adjustment, which limits the effectiveness and applicability of training. Especially when pregnant women are undergoing prenatal delivery training, a device that can effectively simulate the muscle force and body movements during delivery is needed to help pregnant women better adapt to the delivery process and improve their muscle control ability and physical strength distribution during delivery.

[0003] Most of the existing auxiliary training devices for pregnant women during delivery have simple designs and single functions. They cannot provide sufficient resistance adjustment and safety protection, and are difficult to meet the personalized training needs of different pregnant women. In addition, these devices usually lack precise control and limit protection of the pregnant woman's body movements, which increases the safety risks during training. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a prenatal delivery auxiliary training device for obstetric care for pregnant women. By setting a resistance adjustment structure and a controllable limit protection mechanism, the different exercise needs of different pregnant women can be met, and the pregnant women can be continuously protected during the exercise to avoid self-injury due to exhaustion during the exercise. This effectively solves the problem that most of the existing prenatal delivery auxiliary training devices for pregnant women on the market are simple in design and single in function, and cannot provide sufficient resistance adjustment and safety protection, making it difficult to meet the personalized training needs of different pregnant women.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a prenatal delivery auxiliary training device for obstetric care for pregnant women, including a support frame assembly, a resistance adjustment structure and a controllable limit protection mechanism, the resistance adjustment structure is arranged on the support frame assembly, the resistance adjustment structure includes a driving structure and a sliding structure, the controllable limit protection mechanism includes a transmission structure and an adjustment limit structure, and the controllable limit protection mechanism is arranged on the support frame assembly.

[0006] Furthermore, the driving structure includes a driving gear, a connecting rod, an active bevel gear, a driven bevel gear, a transmission rod, a rotating wheel, a driven turntable, a rotating sleeve, a key shaft, a rotating rod and a rotating protrusion, the connecting rod is fixedly connected to the driving gear, the active bevel gear is fixedly connected to the end of the connecting rod away from the driving gear, the driven bevel gear is meshed and connected to the active bevel gear, the transmission rod passes through and is fixedly connected to the driven bevel gear, the rotating wheel is symmetrically arranged at both ends of the transmission rod, the rotating wheel is fixedly connected to the transmission rod, the driven turntable is meshed and connected to the rotating wheel, the rotating sleeve passes through and is fixedly connected to the driven turntable, the key shaft is slidably connected to the rotating sleeve, the rotating rod is fixedly connected to the key shaft, and the rotating protrusion is fixedly connected to the rotating rod, so as to provide sufficient power for the adjustment of the sliding structure.

[0007] Further, the sliding structure includes a fixed plate, a movable extrusion block, a return spring, a friction plate, a clamping hole, a force rod, a through hole, a limit rod, a movable limit block, a telescopic spring and a fixed clamping tooth, the fixed plate passes through and is slidably connected to the support frame assembly, the movable extrusion block passes through and is slidably connected to the fixed plate, one end of the return spring is fixedly connected to the movable extrusion block, the other end of the return spring is fixedly connected to the fixed plate, the friction plate is fixedly connected to an end of the movable extrusion block away from the fixed plate, a movable groove is provided on the fixed plate, a clamping hole is provided above the movable groove, the force rod is slidably connected to the movable groove, a through hole is provided at one end of the force rod close to the fixed plate, the limit rod is slidably connected to the clamping hole, the limit rod is slidably connected to the through hole, the movable limit block is slidably connected to the support frame assembly, one end of the telescopic spring is fixedly connected to the movable limit block, the other end of the telescopic spring is fixedly connected to the support frame assembly, and the fixed clamping tooth is fixedly connected to the movable limit block, so that the resistance encountered during movement can be adjusted.

[0008] Further, the transmission structure includes a control handle, a mounting rod, a driving bevel gear, a driving bevel gear 1, a rotating shaft, a driving bevel gear 2, a driving bevel gear 3, a driving shaft, a driving bevel gear 4, a follower bevel gear, a fixed shaft and a driving protrusion. The mounting rod is rotatably connected to the support frame assembly, the control handle is fixedly connected to the top of the mounting rod, the driving bevel gear is fixedly connected to the mounting rod, the driving bevel gear 1 is meshed with the driving bevel gear, the rotating shaft is fixedly connected to the driving bevel gear 1, the driving bevel gear 2 is fixedly connected to the end of the rotating shaft away from the driving bevel gear 1, the driving bevel gear 3 is meshed with the driving bevel gear 2, the driving shaft is fixedly connected to the driving bevel gear 3, the driving bevel gear 4 is fixedly connected to the end of the driving shaft away from the driving bevel gear 3, the follower bevel gear is meshed with the driving bevel gear 4, the fixed shaft is fixedly connected to the follower bevel gear, and the driving protrusion is fixedly connected to the end of the fixed shaft away from the follower bevel gear, so that the adjustment of the limiting structure can obtain sufficient driving force.

[0009] Furthermore, the adjustment and limiting structure includes a fixed track, a sliding mounting plate, a limiting support plate, a connecting spring, a positioning shaft, a rotating plate and a torsion spring, the fixed track is symmetrically arranged on the support frame assembly, the fixed track is fixedly connected to the support frame assembly, the sliding mounting plate is slidably connected in the fixed track, the limiting support plate passes through and is slidably connected to the sliding mounting plate, one end of the connecting spring is fixedly connected to the limiting support plate, the other end of the connecting spring is fixedly connected to the sliding mounting plate, the positioning shaft is fixedly connected to the support frame assembly, the rotating plate is rotatably connected to the positioning shaft, one end of the torsion spring is fixedly connected to the positioning shaft, and the other end of the torsion spring is fixedly connected to the rotating plate, which can effectively protect pregnant women when they lose strength during exercise.

[0010] Furthermore, the support frame assembly includes a fixed bracket, a lifting slide, a lifting limit groove, a movable cross bar, a damping spring, an adjustable pull ring, a sliding groove and an adjustment groove. The fixed bracket is provided with a lifting slide, and a lifting limit groove is provided inside the lifting slide. The movable cross bar is slidably connected to the lifting slide and the lifting limit groove. One end of the damping spring is fixedly connected to the movable cross bar, and the other end of the damping spring is fixedly connected to the fixed bracket. The adjustable pull ring is symmetrically arranged on the movable cross bar, and the adjustable pull ring is slidably connected to the movable cross bar. The fixed bracket is provided with a sliding groove, and the fixed bracket is provided with an adjustment groove.

[0011] Furthermore, the rotating sleeve is rotationally connected to the fixed bracket, the transmission rod is rotationally connected to the fixed bracket, and the connecting rod penetrates and is rotationally connected to the fixed bracket.

[0012] Furthermore, the movable limit block is slidably connected in the adjustment slot, and the fixed latch is meshingly connected to the driving gear.

[0013] Furthermore, the driving protrusion abuts against the outer surface of the sliding mounting plate, and the rotating protrusion abuts against an end of the movable extrusion block close to the rotating rod.

[0014] Furthermore, when the rotating plate maintains a horizontal state, the bottom surface of the rotating plate and the upper surface of the limiting support plate are in the same horizontal plane.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: In order to solve the problem that most of the existing auxiliary training devices for pregnant women are simple in design, single in function, unable to provide sufficient resistance adjustment and safety protection, and difficult to meet the personalized training needs of different pregnant women, the present invention can meet the different exercise needs of different pregnant women by setting a resistance adjustment structure and a controllable limit protection mechanism, and can continuously protect the pregnant women during the exercise process, so as to avoid the pregnant women from causing harm to themselves due to exhaustion during the exercise process; Through the synergistic effect of the driving structure and the sliding structure, pregnant women can adjust the resistance of the fixed plate when it moves according to their own needs, and realize personalized delivery training. This adjustment mechanism makes the training more in line with personal physical fitness and training progress, and improves the effectiveness and safety of the training. The device not only trains the main muscle groups used during delivery, but also provides a simple exercise function for the upper limbs through the design of adjustable pull rings and movable crossbars, which comprehensively improves the physical fitness of pregnant women and physical support during delivery. In addition, the position of the stress-bearing rod can be adjusted, and the position of the stress-bearing rod can be fixed by the limit rod, and the adjustable pull ring can be displaced on the movable cross bar, so that the device can meet the different physical conditions of different pregnant women. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a prenatal delivery auxiliary training device for obstetric care proposed by the present invention Figure 1 ; Figure 2 This is a schematic diagram of the exploded structure of a prenatal delivery auxiliary training device for obstetric care for pregnant women proposed by the present invention; Figure 3 A schematic diagram of the three-dimensional structure of a prenatal delivery auxiliary training device for obstetric care proposed by the present invention Figure 2 ; Figure 4 Schematic diagram of the three-dimensional structure of the resistance adjustment structure Figure 1 ; Figure 5 Schematic diagram of the three-dimensional structure of the resistance adjustment structure Figure 2 ; Figure 6 An exploded schematic diagram of the resistance adjustment structure; Figure 7 It is a three-dimensional structural schematic diagram of a controllable limit protection mechanism; Figure 8 Schematic diagram of the installation position of the torsion spring; Fig. 9 Schematic diagram of the exploded structure of the support frame assembly.

[0017] Among them, 1. Support frame assembly; 101. Fixed bracket; 102. Lifting slide; 103. Lifting limit slot; 104. Active cross bar; 105. Damping spring; 106. Adjustable pull ring; 107. Sliding slot; 108. Adjustment slot; 2. Resistance adjustment structure; 201. Driving gear; 202. Connecting rod; 203. Active bevel gear; 204. Driven bevel gear; 205. Transmission rod; 206. Rotating wheel; 207. Driven turntable; 208. Rotating sleeve; 209. Key shaft; 210. Rotating rod; 211. Fixed plate; 212. Rotating convex block; 213. Active extrusion block; 214. Reset spring; 215. Friction plate; 216. Active slot; 217. Clamp hole; 2 18. Force rod; 219. Through hole; 220. Limit rod; 221. Movable limit block; 222. Telescopic spring; 223. Fixed tooth; 3. Controllable limit protection mechanism; 301. Control handle; 302. Mounting rod; 303. Driving bevel gear; 304. Transmission bevel gear one; 305. Rotating shaft; 306. Transmission bevel gear two; 307. Transmission bevel gear three; 308. Transmission shaft; 309. Transmission bevel gear four; 310. Follow-up bevel gear; 311. Fixed shaft; 312. Driving protrusion; 313. Fixed track; 314. Sliding mounting plate; 315. Limit support plate; 316. Connecting spring; 317. Positioning shaft; 318. Rotating plate; 319. Torsion spring.

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying 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 should not be understood as limiting the present invention.

[0021] like Figure 1-Figure 9As shown, the present invention proposes an obstetric care prenatal delivery auxiliary training device for pregnant women, including a support frame assembly 1, a resistance adjustment structure 2 and a controllable limit protection mechanism 3, the resistance adjustment structure 2 is arranged on the support frame assembly 1, the resistance adjustment structure 2 includes a driving structure and a sliding structure, the controllable limit protection mechanism 3 includes a transmission structure and an adjustment limit structure, and the controllable limit protection mechanism 3 is arranged on the support frame assembly 1.

[0022] The driving structure includes a driving gear 201, a connecting rod 202, an active bevel gear 203, a driven bevel gear 204, a transmission rod 205, a rotating wheel 206, a driven rotating disk 207, a rotating sleeve 208, a key shaft 209, a rotating rod 210 and a rotating protrusion 212. The connecting rod 202 is fixedly connected to the driving gear 201, the active bevel gear 203 is fixedly connected to the end of the connecting rod 202 away from the driving gear 201, and the driven bevel gear 204 is meshed with the active bevel gear 206. Wheel 203, transmission rod 205 passes through and is fixedly connected to driven bevel gear 204, rotating wheel 206 is symmetrically arranged at both ends of transmission rod 205, rotating wheel 206 is fixedly connected to transmission rod 205, driven turntable 207 is meshedly connected to rotating wheel 206, rotating sleeve 208 passes through and is fixedly connected to driven turntable 207, key shaft 209 is slidably connected to rotating sleeve 208, rotating rod 210 is fixedly connected to key shaft 209, and rotating protrusion 212 is fixedly connected to rotating rod 210.

[0023] The sliding structure includes a fixed plate 211, a movable extrusion block 213, a return spring 214, a friction plate 215, a clamping hole 217, a force rod 218, a through hole 219, a limit rod 220, a movable limit block 221, a telescopic spring 222 and a fixed clamping tooth 223. The fixed plate 211 passes through and is slidably connected to the support frame assembly 1, the movable extrusion block 213 passes through and is slidably connected to the fixed plate 211, one end of the return spring 214 is fixedly connected to the movable extrusion block 213, and the other end of the return spring 214 is fixedly connected to the fixed plate 211. The friction plate 215 is fixedly connected to the movable extrusion block 213 away from the fixed plate 211. At one end, a movable groove 216 is provided on the fixed plate 211, and a clamping hole 217 is provided above the movable groove 216. The force-bearing rod 218 is slidably connected in the movable groove 216. A through hole 219 is provided at one end of the force-bearing rod 218 close to the fixed plate 211, and a limiting rod 220 is slidably connected in the clamping hole 217. The limiting rod 220 is slidably connected in the through hole 219, and a movable limiting block 221 is slidably connected to the support frame assembly 1. One end of the telescopic spring 222 is fixedly connected to the movable limiting block 221, and the other end of the telescopic spring 222 is fixedly connected to the support frame assembly 1. The fixed clamping tooth 223 is fixedly connected to the movable limiting block 221.

[0024] The transmission structure includes a control handle 301, a mounting rod 302, a driving bevel gear 303, a driving bevel gear 1 304, a rotating shaft 305, a driving bevel gear 2 306, a driving bevel gear 3 307, a transmission shaft 308, a driving bevel gear 4 309, a follower bevel gear 310, a fixed shaft 311 and a driving protrusion 312. The mounting rod 302 is rotatably connected to the support frame assembly 1, the control handle 301 is fixedly connected to the top of the mounting rod 302, the driving bevel gear 303 is fixedly connected to the mounting rod 302, the driving bevel gear 1 304 is meshedly connected to the driving bevel gear 303, and the rotating shaft 305 is fixedly connected to the support frame assembly 1. The transmission bevel gear 1 304 is fixedly connected, the transmission bevel gear 2 306 is fixedly connected to the end of the rotating shaft 305 away from the transmission bevel gear 1 304, the transmission bevel gear 3 307 is meshedly connected to the transmission bevel gear 2 306, the transmission shaft 308 is fixedly connected to the transmission bevel gear 3 307, the transmission bevel gear 4 309 is fixedly connected to the end of the transmission shaft 308 away from the transmission bevel gear 3 307, the follower bevel gear 310 is meshedly connected to the transmission bevel gear 4 309, the fixed shaft 311 is fixedly connected to the follower bevel gear 310, and the driving protrusion 312 is fixedly connected to the end of the fixed shaft 311 away from the follower bevel gear 310.

[0025] The adjustment and limiting structure includes a fixed rail 313, a sliding mounting plate 314, a limiting support plate 315, a connecting spring 316, a positioning shaft 317, a rotating plate 318 and a torsion spring 319. The fixed rail 313 is symmetrically arranged on the support frame assembly 1. The fixed rail 313 is fixedly connected to the support frame assembly 1. The sliding mounting plate 314 is slidably connected in the fixed rail 313. The limiting support plate 315 passes through and is slidably connected to the sliding mounting plate 314. One end of the connecting spring 316 is fixedly connected to the limiting support plate 315, and the other end of the connecting spring 316 is fixedly connected to the sliding mounting plate 314. The positioning shaft 317 is fixedly connected to the support frame assembly 1. The rotating plate 318 is rotatably connected to the positioning shaft 317. One end of the torsion spring 319 is fixedly connected to the positioning shaft 317, and the other end of the torsion spring 319 is fixedly connected to the rotating plate 318.

[0026] The support frame assembly 1 includes a fixed bracket 101, a lifting slide 102, a lifting limit groove 103, a movable cross bar 104, a damping spring 105, an adjustable pull ring 106, a sliding groove 107 and an adjusting groove 108. The fixed bracket 101 is provided with a lifting slide 102, and a lifting limit groove 103 is provided inside the lifting slide 102. The movable cross bar 104 is slidably connected to the lifting slide 102 and the lifting limit groove 103. One end of the damping spring 105 is fixedly connected to the movable cross bar 104, and the other end of the damping spring 105 is fixedly connected to the fixed bracket 101. The adjustable pull ring 106 is symmetrically arranged on the movable cross bar 104, and the adjustable pull ring 106 is slidably connected to the movable cross bar 104. The sliding groove 107 is provided on the fixed bracket 101, and the adjusting groove 108 is provided on the fixed bracket 101.

[0027] The rotating sleeve 208 is rotatably connected to the fixed bracket 101 , the transmission rod 205 is rotatably connected to the fixed bracket 101 , and the connecting rod 202 penetrates and is rotatably connected to the fixed bracket 101 .

[0028] The movable limiting block 221 is slidably connected in the adjusting slot 108 , and the fixed latching teeth 223 are meshedly connected to the driving gear 201 .

[0029] The driving protrusion 312 abuts against the outer surface of the sliding mounting plate 314 , and the rotating protrusion 212 abuts against one end of the movable extrusion block 213 close to the rotating rod 210 .

[0030] When the rotating plate 318 maintains a horizontal state, the bottom surface of the rotating plate 318 and the upper surface of the limiting support plate 315 are in the same horizontal plane.

[0031] When in use, the parts required by the device are assembled, and the pregnant woman stands on the fixed bracket 101 and adjusts the resistance encountered by the fixed plate 211 when it moves according to her own needs.

[0032] The user pulls the movable limit block 221 upwards, and the movable limit block 221 presses the telescopic spring 222 upwards, so that the fixed tooth 223 on the bottom surface of the movable limit block 221 is separated from the driving gear 201. At this time, the driving gear 201 can rotate normally, and the user manually controls the driving gear 201 to rotate. The driving gear 201 drives the active bevel gear 203 to rotate through the connecting rod 202, and the active bevel gear 203 drives the driven bevel gear 204 to rotate. The driven bevel gear 204 drives the rotating wheel 206 to rotate synchronously in the same direction through the transmission rod 205, and the rotating wheel 206 drives the rotating wheel 206 through the driven rotating disk 207. The movable sleeve 208 rotates, and the rotating sleeve 208 drives the rotating rod 210 to rotate through the key shaft 209, so that the rotating protrusion 212 rotates synchronously in the opposite direction. At this time, since the rotating protrusion 212 is in contact with the movable extrusion block 213, as the rotating protrusion 212 rotates, the movable extrusion block 213 overcomes the force of the return spring 214 to move, so that the friction plate 215 provided on the movable extrusion block 213 is squeezed with the outer surface of the fixed bracket 101, the resistance encountered by the movable extrusion block 213 when moving is increased, and the user needs a greater force to drive the fixed plate 211 to move.

[0033] After the position of the movable extrusion block 213 is adjusted, the user releases the movable limit block 221, and the movable limit block 221 moves downward along the adjustment slot 108 under the action of the telescopic spring 222, and the fixed clamping tooth 223 re-engages with the driving gear 201 to keep the angle of the movable extrusion block 213 fixed. Then the user puts the force rod 218 on the shoulder and puts his hand on the force rod 218. The user gradually lifts the fixed plate 211 through the force rod 218, and then squats to the initial position after lifting. The user can also adjust the spacing between the force rods 218 at the same time. When using the device, the limit rod 220 can be removed from the through hole 219 and the clamping hole 217, and then the force rod 218 can be slid along the movable slot 216. After the spacing between the force rods 218 is adjusted, the limit rod 220 is reset and the force rod 218 is fixed again.

[0034] When insufficient force occurs during the process of driving the movable extrusion block 213 to move, the user can drive the mounting rod 302 to rotate by controlling the handle 301, and the mounting rod 302 drives the transmission bevel gear 1 304 to rotate through the driving bevel gear 303, and the transmission bevel gear 1 304 drives the transmission bevel gear 2 306 to rotate through the rotating shaft 305, and the transmission bevel gear 2 306 rotates to drive the transmission bevel gear 3 307 to rotate, and the transmission bevel gear 3 307 drives the transmission bevel gear 4 309 to rotate through the transmission shaft 308, and the transmission bevel gear 4 309 is driven by the transmission shaft 308. The four 309 drives the follower bevel gear 310 to rotate, and the follower bevel gear 310 drives the driving protrusion 312 to rotate through the fixed shaft 311, and the driving protrusion 312 drives the sliding mounting plate 314 to move along the fixed track 313, so that the limiting support plate 315 moves to the bottom of the rotating plate 318, so that the rotating plate 318 cannot rotate downward. At this time, the user releases the fixed plate 211, and the movable extrusion block 213 set on the fixed plate 211 falls on the rotating plate 318. The rotating plate 318 supports the fixed plate 211 to prevent the user from being injured.

[0035] The user can also use the adjustable pull ring 106 to drive the movable cross bar 104 along the lifting limit groove 103 and the lifting slide groove 102 to squeeze the damping spring 105 downward to perform simple upper limb exercises. The above is the overall workflow of the present invention. Just repeat this step next time you use it. The actual operation process is very simple and easy.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0038] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A prenatal delivery auxiliary training device for obstetric care of pregnant women, characterized by: The invention comprises a support frame assembly (1), a resistance adjustment structure (2) and a controllable limit protection mechanism (3), wherein the resistance adjustment structure (2) is arranged on the support frame assembly (1), the resistance adjustment structure (2) comprises a driving structure and a sliding structure, the controllable limit protection mechanism (3) comprises a transmission structure and an adjustment limit structure, and the controllable limit protection mechanism (3) is arranged on the support frame assembly (1).

2. The obstetric nursing prenatal delivery auxiliary training device according to claim 1, characterized in that: The driving structure comprises a driving gear (201), a connecting rod (202), a driving bevel gear (203), a driven bevel gear (204), a transmission rod (205), a rotating wheel (206), a driven rotating disk (207), a rotating sleeve (208), a key shaft (209), a rotating rod (210) and a rotating protrusion (212), wherein the connecting rod (202) is fixedly connected to the driving gear (201), the driving bevel gear (203) is fixedly connected to an end of the connecting rod (202) away from the driving gear (201), and the driven bevel gear (204) is meshedly connected to the driving bevel gear (201). 3), the transmission rod (205) passes through and is fixedly connected to the driven bevel gear (204), the rotating wheels (206) are symmetrically arranged at both ends of the transmission rod (205), the rotating wheels (206) are fixedly connected to the transmission rod (205), the driven rotating disk (207) is meshedly connected to the rotating wheel (206), the rotating sleeve (208) passes through and is fixedly connected to the driven rotating disk (207), the key shaft (209) is slidably connected to the rotating sleeve (208), the rotating rod (210) is fixedly connected to the key shaft (209), and the rotating protrusion (212) is fixedly connected to the rotating rod (210).

3. The obstetric nursing prenatal delivery auxiliary training device according to claim 2, characterized in that: The sliding structure comprises a fixed plate (211), a movable extrusion block (213), a return spring (214), a friction plate (215), a clamping hole (217), a force rod (218), a through hole (219), a limit rod (220), a movable limit block (221), a telescopic spring (222) and a fixed clamping tooth (223); the fixed plate (211) passes through and is slidably connected to the support frame assembly (1); the movable extrusion block (213) passes through and is slidably connected to the fixed plate (211); one end of the return spring (214) is fixedly connected to the movable extrusion block (213); the other end of the return spring (214) is fixedly connected to the fixed plate (211); and the friction plate (215) is fixedly connected to one end of the movable extrusion block (213) away from the fixed plate (211). The fixed plate (211) is provided with a movable groove (216), a clamping hole (217) is provided above the movable groove (216), the force-bearing rod (218) is slidably connected in the movable groove (216), a through hole (219) is provided at one end of the force-bearing rod (218) close to the fixed plate (211), the limiting rod (220) is slidably connected in the clamping hole (217), the limiting rod (220) is slidably connected in the through hole (219), the movable limiting block (221) is slidably connected to the support frame assembly (1), one end of the telescopic spring (222) is fixedly connected to the movable limiting block (221), the other end of the telescopic spring (222) is fixedly connected to the support frame assembly (1), and the fixed clamping tooth (223) is fixedly connected to the movable limiting block (221).

4. The obstetric nursing prenatal delivery auxiliary training device according to claim 3, characterized in that: The transmission structure comprises a control handle (301), a mounting rod (302), a bevel drive gear (303), a bevel drive gear 1 (304), a rotating shaft (305), a bevel drive gear 2 (306), a bevel drive gear 3 (307), a transmission shaft (308), a bevel drive gear 4 (309), a follower bevel gear (310), a fixed shaft (311) and a driving protrusion (312); the mounting rod (302) is rotatably connected to the support frame assembly (1); the control handle (301) is fixedly connected to the top of the mounting rod (302); the bevel drive gear (303) is fixedly connected to the mounting rod (302); the bevel drive gear 1 (304) is meshedly connected to the bevel drive gear (303); the rotating shaft (305 ) is fixedly connected to the transmission bevel gear one (304), the transmission bevel gear two (306) is fixedly connected to the end of the rotating shaft (305) away from the transmission bevel gear one (304), the transmission bevel gear three (307) is meshedly connected to the transmission bevel gear two (306), the transmission shaft (308) is fixedly connected to the transmission bevel gear three (307), the transmission bevel gear four (309) is fixedly connected to the end of the transmission shaft (308) away from the transmission bevel gear three (307), the follower bevel gear (310) is meshedly connected to the transmission bevel gear four (309), the fixed shaft (311) is fixedly connected to the follower bevel gear (310), and the driving protrusion (312) is fixedly connected to the end of the fixed shaft (311) away from the follower bevel gear (310).

5. The obstetric nursing prenatal delivery auxiliary training device according to claim 4, characterized in that: The regulating and limiting structure comprises a fixed rail (313), a sliding mounting plate (314), a limiting support plate (315), a connecting spring (316), a positioning shaft (317), a rotating plate (318) and a torsion spring (319); the fixed rail (313) is symmetrically arranged on the supporting frame assembly (1); the fixed rail (313) is fixedly connected to the supporting frame assembly (1); the sliding mounting plate (314) is slidably connected in the fixed rail (313); and the limiting support plate (315) penetrates and The connecting spring (316) is slidably connected to the sliding mounting plate (314); one end of the connecting spring (316) is fixedly connected to the limiting support plate (315); the other end of the connecting spring (316) is fixedly connected to the sliding mounting plate (314); the positioning shaft (317) is fixedly connected to the support frame assembly (1); the rotating plate (318) is rotationally connected to the positioning shaft (317); one end of the torsion spring (319) is fixedly connected to the positioning shaft (317); and the other end of the torsion spring (319) is fixedly connected to the rotating plate (318).

6. The obstetric nursing prenatal delivery auxiliary training device according to claim 5, characterized in that: The support frame assembly (1) comprises a fixed bracket (101), a lifting slide groove (102), a lifting limit groove (103), a movable cross bar (104), a damping spring (105), an adjustable pull ring (106), a sliding groove (107) and an adjusting groove (108); the fixed bracket (101) is provided with a lifting slide groove (102); a lifting limit groove (103) is provided inside the lifting slide groove (102); the movable cross bar (104) is slidably connected to the lifting slide groove (102) to and in the lifting limit groove (103), one end of the damping spring (105) is fixedly connected to the movable cross bar (104), the other end of the damping spring (105) is fixedly connected to the fixed bracket (101), the adjustable pull ring (106) is symmetrically arranged on the movable cross bar (104), the adjustable pull ring (106) is slidably connected to the movable cross bar (104), the fixed bracket (101) is provided with a sliding groove (107), and the fixed bracket (101) is provided with an adjustment groove (108).

7. The obstetric nursing prenatal delivery auxiliary training device according to claim 6, characterized in that: The rotating sleeve (208) is rotatably connected to the fixed bracket (101), the transmission rod (205) is rotatably connected to the fixed bracket (101), and the connecting rod (202) penetrates and is rotatably connected to the fixed bracket (101).

8. The obstetric nursing prenatal delivery auxiliary training device according to claim 7, characterized in that: The movable limit block (221) is slidably connected in the adjustment slot (108), and the fixed latch tooth (223) is meshingly connected to the driving gear (201).

9. The obstetric nursing prenatal delivery auxiliary training device according to claim 8, characterized in that: The driving protrusion (312) abuts against the outer surface of the sliding mounting plate (314), and the rotating protrusion (212) abuts against one end of the movable extrusion block (213) close to the rotating rod (210).

10. The obstetric nursing prenatal delivery auxiliary training device according to claim 9, characterized in that: When the rotating plate (318) remains in a horizontal state, the bottom surface of the rotating plate (318) and the upper surface of the position-limiting support plate (315) are in the same horizontal plane.

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