Muscle trainer for physical training

Abstract

The invention relates to the technical field of physical fitness equipment, and discloses a muscle trainer for physical training, which comprises a deck chair and protective bars fixedly connected to two sides of the deck chair, and further comprises buffer parts respectively connected to two sides of the deck chair and used for slowing down the instantaneous falling speed of a barbell, and each buffer part comprises an energy absorption assembly, a limiting assembly, a pin disengaging assembly and an instantaneous triggering assembly, the energy absorption assembly comprises a base horizontally and fixedly connected with the side wall of the deck chair through a support, a supporting plate located above the base, a corrugated pipe fixedly connected between the base and the supporting plate and a plurality of compression springs used for resetting, the base is provided with a plurality of air inlet holes, and the limiting assembly comprises a sliding rail horizontally and fixedly connected to the support and a spring clamping pin sliding in the sliding rail; the side wall of the supporting plate is provided with an insertion hole allowing the spring clamping pin to be inserted therein, the pin disengaging assembly comprises a shaft body fixedly connected to the side wall of the spring clamping pin, a wedge-shaped body and a cam, and the instantaneous triggering assembly comprises a ratchet wheel fixedly arranged on a wheel shaft in a sleeving mode, a rotary disc and multiple sets of one-way elastic swing pieces hinged to the peripheral side of the rotary disc.

Description

Technical Field

[0001] The invention relates to the technical field of sports fitness equipment, in particular to a muscle trainer for sports training. Background Art

[0002] Physical exercise refers to physical activities that people choose according to their physical needs, use various sports methods, and combine natural forces and health measures to develop the body, improve health, enhance physical fitness, regulate the mind, enrich cultural life and manage leisure time. Physical pulling training is indispensable. Among them, barbell training equipment is a common training equipment for arm and shoulder muscle training, especially bench press barbell training equipment, which can fully achieve strength training for the trainee's shoulders, arms and other local muscles.

[0003] The current bench press barbell training equipment includes a base, a reclining chair installed on the base so that the trainee can lie flat, and a support frame fixedly installed on the base and close to the head of the reclining chair, wherein an antler frame for horizontally limiting the placement of a barbell grip is provided on the upper side of the support frame close to the reclining chair, wherein protective bars parallel to the length extension direction of the reclining chair are provided on both sides of the reclining chair, and the protective height of the protective bars is usually higher than the upper surface of the reclining chair, so as to prevent the barbell from falling and crushing the chest of the trainee. When training, the trainee usually evenly inserts the weight plates from both ends of the grip, lies flat on the reclining chair, and lifts up the grip placed on the antler frame, thereby controlling the up and down displacement of the entire barbell by extending and retracting the arms.

[0004] When the trainee is performing muscle limit training of the bench press, the energy of the arms is frequently consumed, and the trainee's arms are prone to fatigue. When the arms are in the state of limit strength fatigue, the trainee's arms can hardly provide resistance to the gravity of the barbell, and can't continue to lift the barbell and place it on the antler rack. At this time, the barbell will fall onto the protective bar by gravity. In this process, the trainee is in an extreme fatigue state and it is usually difficult for the arms to quickly let go at the moment of force release. The barbell will exert gravity acceleration on the trainee's arms, which can easily cause external force strain on the trainee's arm muscles. In addition, the barbell grip will produce a large vibration after hitting the protective bar, causing extreme discomfort to the trainee during the training process. Summary of the invention

[0005] The invention provides a muscle trainer for sports training, which can slow down the instantaneous falling speed of a barbell, thereby avoiding strain on the arm muscles of a trainee due to difficulty in quickly letting go of the arm in an extreme fatigue state after the arm loses its force.

[0006] The present invention provides a muscle trainer for sports training, comprising a reclining chair and protective bars fixedly connected to both sides of the reclining chair, and also comprising buffer parts respectively connected to both sides of the reclining chair for slowing down the instantaneous falling speed of a barbell, the buffer parts comprising: an energy absorbing component, a limiting component, a pin-off component, and an instantaneous triggering component, the energy absorbing component comprising a base horizontally fixedly connected to the side wall of the reclining chair through a bracket, a supporting plate located above the base for lifting a barbell weight plate, a bellows fixedly connected between the base and the supporting plate, and a plurality of compression springs for resetting, a portion of the base located within the minimum diameter of the bellows is vertically provided with a plurality of air inlet holes, each of the air inlet holes is provided with a flow limiting valve that only reduces the outflow of gas in the bellows, and the limiting valve The positioning component includes a slide rail horizontally fixed on the bracket and a spring pin sliding in the slide rail. The side wall of the support plate is provided with a socket for inserting the spring pin. The pin removal component includes a shaft body fixed to the side wall of the spring pin, a wedge body placed under the shaft body and slidably connected to the bracket, and a cam located under the wedge body. The cam is rotatably connected to the bracket through a wheel axle. The instantaneous trigger component includes a ratchet fixedly mounted on the wheel axle, a turntable located under the ratchet, and multiple groups of unidirectional elastic pendulums hinged on the circumference of the turntable. The turntable is rotatably connected to the bracket through a rotating shaft. The instantaneous fall of the barbell drives the turntable to rotate at a high speed. Each unidirectional elastic pendulum extends outward through centrifugal force and drives the ratchet to rotate.

[0007] Preferably, there are multiple air inlet holes, which are evenly distributed in a coaxial ring shape.

[0008] Preferably, the two protection bars are provided with guide grooves in the vertical direction, and the instantaneous trigger assembly is connected to the handle of the barbell through a driving member, and the driving member includes: a guide rail, a rack plate, and a gear. The guide rail is fixedly connected to the upper end of the guide groove of the protection bar, and a slider is slidably connected in the guide rail. The two ends of the handle of the barbell respectively pass through the sliders on both sides, and the rack plate is fixedly connected to the bottom of the guide rail. The tooth surface of the rack plate faces one side of the tail of the recliner. The gear is fixedly sleeved on the rotating shaft of the turntable, the gear is located at the bottom of the guide groove, and the rack plate is meshed with the gear.

[0009] Preferably, the flow limiting valve includes two semi-annular air blocking plates and tension springs respectively fixed to the lower surfaces of the two air blocking plates. The two air blocking plates are placed on the upper surface of the base and are respectively hinged to the two sides of the air inlet. The base is provided with two countersunk grooves. The other end of the tension spring is placed in the countersunk groove and fixed to the inner wall of the base. When the two air blocking plates are rotated in similar directions, they are spliced ​​into a complete annular plate.

[0010] Preferably, there are multiple compression springs evenly distributed around the bellows, and a guide rod is vertically inserted in the middle of each compression spring. The upper end of the guide rod is fixedly connected to the lower surface of the support plate, and the lower end of the guide rod passes through the base and is slidably connected to the base.

[0011] Preferably, the unidirectional elastic pendulum includes a crescent plate, a counterweight ball and a preload spring, one end of the crescent plate is hinged to the side wall of the turntable, the counterweight ball is fixedly connected to the outer convex surface of the crescent plate and one side close to the hinge point, the turntable is provided with a flange block on the inner concave surface of the crescent plate, the turntable is fixedly connected to the rotating shaft, a flange is fixedly mounted on the rotating shaft, one end of the preload spring is fixedly connected to the inner concave surface of the crescent plate, and the other end is fixedly connected to the flange, the ratchet teeth of the ratchet wheel are in the opposite direction to the direction of each crescent plate, and the high-speed rotation of the rotating shaft drives each crescent plate to be thrown out of the turntable and engage with the ratchet teeth of the ratchet wheel to drive the ratchet wheel axle to rotate.

[0012] Preferably, two adjacent crescent plates are hinged via a connecting rod, the connecting rod is parallel to the shortest straight line between the hinge points of the two crescent plates, and a plurality of connecting rods are used to synchronize the expansion or contraction of the crescent plates.

[0013] Preferably, a support seat is fixedly connected to one side of the base away from the tail of the recliner, a support leg is connected to one side of the support seat, a concave cavity is opened in the support seat, the concave cavity is connected to an opening on a side close to the bracket, a liquid storage tank is fixedly connected in the concave cavity, the liquid storage tank is filled with buffer solution, one end of the wheel axle away from the cam is inserted into the liquid storage tank, and the two are sealed and rotatably connected, and a plurality of stirring blades are fixedly connected to the circumference of the part of the wheel axle extending into the liquid storage tank.

[0014] Preferably, the wheel axle is sealed with the fluid storage tank via a dynamic sealing ring.

[0015] Preferably, a groove matching the arc surface at the bottom of the weighted bell piece is provided on the upper portion of the support plate to limit the displacement of the weighted bell piece, and a rubber layer for vibration damping is provided in the groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the energy absorbing component in the buffer part includes a base, a support plate, a bellows and a plurality of compression springs, wherein the bellows is placed between the base and the support plate, and when the base and the support plate are close to or away from each other, the bellows can realize follow-up vertical extension and vertical contraction, and the bellows is hollow and can be filled with air. Specifically, the air inlet holes can be used to drive the bellows to extend upward during the upward movement of the support plate, and at this time, the air will be sucked into the bellows by the multiple air inlet holes at a high speed under negative pressure, thereby The hollow cavity in the bellows is filled. The flow limiting valve arranged therein can reduce the aperture of each air inlet hole as the bellows contracts, thereby increasing the resistance effect. At this time, if the support plate continues to apply downward force, the bellows will continue to compress until all the gas in the cavity is discharged. The compression spring arranged therein can be compressed after being subjected to pressure. When the applied force is released, it will automatically extend by relying on its elastic reset ability. The automatic upward movement of the support plate can be achieved by setting multiple compression springs. The limit assembly can limit the longitudinal movement of the support plate. When the latch is facing away from the support plate, the limit assembly will be used to limit the longitudinal movement of the support plate. After one side of the socket slides, the return spring is in a stretched state. At this time, the support plate achieves the effect of disengaging from the latch limit, and through the action of the compression spring, it moves upward quickly. The pin-off assembly provided therein is used to control the latch to slide horizontally toward one side of the recliner. Specifically, when the wedge-shaped body moves upward along the bracket, the wedge-shaped surface of the wedge-shaped body will contact the shaft body, and the shaft body will move on the wedge-shaped surface. During this process, the latch will gradually slide in the direction close to the recliner. As the shaft body approaches the vertical surface of the wedge-shaped body, the latch will eventually be disengaged. The cam is rotatably connected to the bracket through a fixed wheel axle. Through the instantaneous trigger assembly, it can sense the acceleration of the barbell through the mechanical and physical components, thereby driving the rotation of the wheel axle. Furthermore, when the barbell lacks the support of the trainer's arm strength and falls instantly at high speed, the high-speed rotation of the rotating shaft will be driven at this time. The rotation of the rotating shaft will drive the rotation of the turntable and multiple groups of unidirectional elastic pendulums on the turntable. Each unidirectional elastic pendulum extends outward through centrifugal force, thereby increasing the contact distance with the ratchet teeth of the ratchet wheel, thereby completing the rotation of the ratchet wheel, and the ratchet wheel realizes the synchronous rotation of the wheel axle.

[0017] In summary, the present invention provides buffer parts on both sides of the recliner, so that during the trainee's bench press muscle limit training, when the energy of both arms is frequently consumed and enters the extreme fatigue state and it is difficult to provide resistance to the gravity of the barbell, the buffer parts can mechanically detect the gravity acceleration of the barbell and apply a downward buffer force to the barbell to slow down the instantaneous falling speed of the barbell, thereby avoiding the trainee's arm muscle strain caused by the difficulty in quickly letting go of the arms in the extreme fatigue state after the force is released, and the provided buffer parts can prevent the barbell from hitting the protective bar and generating large vibrations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the front side structural view of a muscle training device for sports training provided by an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A partial enlarged view of part A;

[0020] Figure 3 A schematic diagram of the structure of a liquid storage tank from a front side perspective of a muscle training device for sports training provided by an embodiment of the present invention;

[0021] Figure 4 A structural schematic diagram of a first embodiment of a partial instantaneous trigger component in a muscle trainer for sports training provided by an embodiment of the present invention from a left side perspective;

[0022] Figure 5 A schematic diagram of the structure of a flow limiting valve in a muscle training device for sports training provided by an embodiment of the present invention from a top view;

[0023] Figure 6 A structural schematic diagram of a second embodiment of a part of an instantaneous trigger component in a muscle trainer for sports training provided by an embodiment of the present invention from a left side perspective;

[0024] Figure 7 A schematic diagram of the structure of a rack plate of a muscle trainer for sports training provided by an embodiment of the present invention from a left side perspective;

[0025] Figure 8 A schematic diagram of the structure of a cam of a muscle trainer for sports training provided by an embodiment of the present invention from a left side perspective.

[0026] Description of reference numerals:

[0027] 1. recliner; 2. buffer part; 21. energy absorbing component; 211. support plate; 2111. jack; 212. compression spring; 213. base; 2131. air inlet; 214. flow limiting valve; 2141. wind blocking plate; 2142. tension spring; 215. bellows; 22. limiter component; 221. slide rail; 222. spring latch; 2221. latch; 2222. reset spring; 23. release pin component; 231. shaft body; 232. wedge-shaped body; 233. convex Wheel; 24, instantaneous trigger assembly; 241, ratchet; 242, turntable; 243, one-way elastic pendulum; 2431, crescent plate; 2432, counterweight ball; 2433, preload spring; 2434, flange block; 3, protective bar; 31, guide groove; 4, driving part; 41, guide rail; 42, slider; 43, rack plate; 44, gear; 5, guide rod; 6, connecting rod; 7, support seat; 71, concave cavity; 8, liquid storage tank; 9, stirring blade; 10, rotating shaft; 11, wheel axle. DETAILED DESCRIPTION

[0028] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0029] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] refer to Figure 1 and Figure 2 The present invention provides a muscle trainer for sports training, comprising a reclining chair 1 and protective bars 3 fixedly connected to both sides of the reclining chair 1, and also comprising a buffer part 2 respectively connected to both sides of the reclining chair 1 for slowing down the instantaneous falling speed of a barbell, the buffer part 2 comprising: an energy absorbing component 21, a limit component 22, a pin-off component 23, and an instantaneous trigger component 24, the energy absorbing component 21 comprising a base 213 fixedly connected to the side wall of the reclining chair 1 horizontally through a bracket, a support plate 211 located above the base 213 for lifting a barbell weight plate, a bellows 215 fixedly connected between the base 213 and the support plate 211, and a plurality of compression springs 212 for resetting, a portion of the base 213 located within the minimum diameter of the bellows 215 is vertically provided with a plurality of air inlet holes 2131, each of the air inlet holes 213 1 is provided with a flow limiting valve 214 for only reducing the outflow of gas in the bellows 215, the limiting assembly 22 includes a slide rail 221 horizontally fixed to the bracket and a spring latch 222 sliding in the slide rail 221, the spring latch 222 includes a transverse latch 2221 and a return spring 2222 with one end fixed to the end of the latch 2221, wherein the latch 2221 can slide horizontally along the slide rail 221, the side wall of the support plate 211 is provided with a plug hole 2111 for inserting the spring latch 222, the pin removal assembly 23 includes a shaft 231 fixed to the side wall of the spring latch 222, specifically the latch 2221, a wedge 232 disposed below the shaft 231 and slidably connected to the bracket, and a cam 233 located below the wedge 232, as shown in FIG. Figure 8As shown, the cam 233 is rotatably connected to the bracket via the axle 11, the instantaneous trigger assembly 24 includes a ratchet 241 fixedly mounted on the axle 11, a turntable 242 located below the ratchet 241, and a plurality of groups of one-way elastic pendulums 243 hinged to the circumference of the turntable 242. The turntable 242 is rotatably connected to the bracket via the rotating shaft 10. The instantaneous fall of the barbell drives the turntable 242 to rotate at a high speed, and each one-way elastic pendulum 243 extends outward by centrifugal force and drives the ratchet 241 to rotate.

[0031] In the above embodiments, the energy absorbing component 21 in the buffer part 2 includes a base 213, a support plate 211, a bellows 215 and a plurality of compression springs 212, wherein the bellows 215 is placed between the base 213 and the support plate 211, and the bellows 215 can realize follow-up vertical extension and vertical contraction when the base 213 and the support plate 211 are close to or away from each other. The bellows 215 is hollow and can be filled with air. Specifically, the air inlet holes 2131 are provided, and the bellows 215 can be driven to extend upward during the upward movement of the support plate 211. At this time, the air will be drawn into the bellows 215 by the plurality of air inlet holes 213. 1 High-speed negative pressure is sucked into the bellows 215, thereby filling the cavity in the bellows 215. The flow limiting valve 214 provided therein is a one-way rotating valve, which is similar to the principle of a pneumatic check valve, but does not completely block the discharge of air from the bellows 215. Instead, after the support plate 211 is pressed downward, as the bellows 215 contracts, the aperture of each air inlet hole 2131 can be reduced, thereby increasing the resistance effect. At this time, if the support plate 211 continues to apply a downward force, the bellows 215 will continue to compress until all the gas in the cavity is discharged. The compression spring 212 provided therein will be compressed after being subjected to pressure. It can be compressed. When the applied force is released, it will automatically extend by relying on its elastic reset ability. The automatic upward movement of the support plate 211 can be achieved by setting multiple compression springs 212, wherein the limit assembly 22 includes a slide rail 221 and a spring latch 222 slidably connected to the slide rail 221. The spring latch 222 is a conventional press-retract component. This embodiment provides one of the specific structures. Specifically, when the bellows 215 is in the entire compression state, the latch 2221 moves toward one side of the socket 2111 of the support plate 211 and can be directly inserted into the socket 2111, thereby achieving the limitation of the longitudinal movement of the support plate 211. The return spring 2222 is in a normal, unextended state at this time. Furthermore, the other end of the return spring 2222 is fixedly connected to the slide rail 221 through a connecting plate, wherein a clearance opening is provided on the connecting plate corresponding to the latch 2221, and a vertical plate is fixedly connected to the upper surface of the latch 2221. The return spring 2222 is placed between the connecting plate and the vertical plate, and is fixedly connected to the two respectively. When the latch 2221 slides toward the side away from the socket 2111, the return spring 2222 is in a stretched state. At this time, the support plate 211 achieves the effect of disengaging from the limit of the latch 2221, and moves upward quickly through the action of the compression spring 212.

[0032] The pin-off assembly 23 is provided therein for realizing the control pin 2221 to slide horizontally toward one side of the recliner 1. Specifically, a horizontal shaft 231 is fixedly connected to the front side of the pin 2221, and a wedge-shaped body 232 is provided thereunder, and the wedge-shaped surface of the wedge-shaped body 232 faces the shaft 231. When the wedge-shaped body 232 moves upward along the bracket, the wedge-shaped surface of the wedge-shaped body 232 will contact the shaft 231, and the shaft 231 will move on the wedge surface. In this process, the pin 2221 will gradually slide toward the direction close to the recliner 1. As the shaft 231 approaches the vertical surface of the wedge-shaped body 232, the external disengagement effect of the pin 2221 is finally achieved. The cam 233 provided therein is rotatably connected to the bracket through the fixed wheel shaft 11. Preferably, in this embodiment, a contact cross plate is provided on the lower surface of the wedge-shaped body 232. When the wheel shaft 11 rotates, it will drive the cam 233 to rotate, and the cam 233 will frequently push the wedge-shaped body 232 upward to rise and fall.

[0033] By setting up the instantaneous trigger component 24, the acceleration of the barbell can be sensed through the mechanical and physical components, thereby driving the rotation of the wheel axle 11. Furthermore, when the barbell lacks the support of the trainer's arm strength and falls instantly at high speed, the high-speed rotation of the rotating shaft 10 will be driven. The rotation of the rotating shaft 10 will drive the rotation of the turntable 242 and the multiple groups of unidirectional elastic pendulums 243 on the turntable 242. Each unidirectional elastic pendulum 243 extends outward due to centrifugal force, thereby increasing the contact distance with the ratchet teeth of the ratchet 241, thereby completing the rotation of the ratchet 241, and the ratchet 241 can realize the synchronous rotation of the wheel axle 11.

[0034] In summary, the present invention provides buffer parts 2 on both sides of the recliner 1. During the trainee's bench press muscle limit training, when the energy of both arms is frequently consumed and enters the extreme fatigue state and it is difficult to provide resistance to the gravity of the barbell, the buffer parts 2 can mechanically detect the gravity acceleration of the barbell and apply a downward buffering force to the barbell to slow down the instantaneous falling speed of the barbell, thereby avoiding the trainee's arm muscle strain caused by the difficulty in quickly letting go of the arms in the extreme fatigue state after the force is released. In addition, the buffer parts 2 can prevent the barbell from generating large vibrations after hitting the protective bar 3.

[0035] Further, refer to Figure 1 There are multiple air inlet holes 2131, and they are evenly distributed in a coaxial ring shape.

[0036] In the above embodiments, by providing a plurality of air inlet holes 2131 , the efficiency of inflating the cavity in the bellows 215 can be ensured during the upward movement of the supporting plate 211 .

[0037] Further, refer to Figure 1 , Figure 3 and Figure 7, the two protection bars 3 are provided with guide grooves 31 in the vertical direction, the instantaneous trigger assembly 24 is connected to the handle of the barbell through the driving member 4, the driving member 4 includes: a guide rail 41, a rack plate 43, and a gear 44. The guide rail 41 is fixedly connected to the upper end of the guide groove 31 of the protection bar 3, and a slider 42 is slidably connected in the guide rail 41. The two ends of the handle of the barbell respectively penetrate the sliders 42 on both sides, the rack plate 43 is fixedly connected to the bottom of the guide rail 41, and the tooth surface of the rack plate 43 faces one side of the tail of the recliner 1. The gear 44 is fixedly sleeved on the rotating shaft 10 of the turntable 242, the gear 44 is located at the bottom of the guide groove 31, and the rack plate 43 is meshed with the gear 44, as shown in FIG. Figure 5 As shown, the flow limiting valve 214 includes two semi-annular air blocking plates 2141 and tensioning springs 2142 respectively fixedly connected to the lower surfaces of the two air blocking plates 2141. The two air blocking plates 2141 are both placed on the upper surface of the base 213 and are respectively hinged on both sides of the air inlet 2131. The base 213 is provided with two countersunk grooves. The other end of the tensioning spring 2142 is placed in the countersunk groove and fixedly connected to the inner wall of the base 213. When the two air blocking plates 2141 are rotated in similar directions, they are spliced ​​into a complete annular plate.

[0038] In the above embodiment, the two protection bars 3 are both located between the two brackets, and the guide grooves 31 are arranged to be U-shaped grooves with an upper opening. Specifically, the spacing between the guide grooves 31 is larger than the outer diameter of the barbell grip, and the up and down movement of the barbell can drive the two sliders 42 and the rack plate 43 to move vertically synchronously. The downward displacement of the rack plate 43 can mesh with the gear 44 of the rotating shaft 10. Since the rack plate 43 is located on the front side of the gear 44 and the tooth surface of the rack plate 43 extends backward, it can drive the rotating shaft 10 and the gear 44 to rotate clockwise. At this time, the turntable 242 will rotate at a high speed together with the rotating shaft 10, so as to achieve the disengagement of the driving pin 2221 from the socket 2111, thereby prompting the compression spring 212 to reset. Height, during this process, the two air blocking plates 2141 will rotate upward, providing a high-speed entry space for the gas that rushes into the bellows 215 at high speed, so that the bellows 215 can be quickly inflated, and the support plate 211 will give an upward lifting force to the barbell during the upward movement. At this time, the barbell relies on its downward kinetic energy to give downward pressure to the support plate 211. At this time, the gas in the bellows 215 will rush downward to each air inlet hole 2131, and the two air blocking plates 2141 of each air inlet hole 2131 will close. The air in the bellows 215 is squeezed and quickly passes through the middle hole of the air blocking plate 2141 with a smaller aperture. At this time, under the buffering of the compression spring 212 and the damping force of the air blocking plate 2141, an effect of slowly lowering the support plate 211 is formed.

[0039] Further, refer to Figure 1 and Figure 3There are multiple compression springs 212, which are evenly distributed around the bellows 215. A guide rod 5 is vertically inserted in the middle of each compression spring 212. The upper end of the guide rod 5 is fixedly connected to the lower surface of the support plate 211, and the lower end of the guide rod 5 passes through the base 213 and is slidably connected to the base 213.

[0040] In the above embodiments, by setting the number of compression springs 212 to be multiple and evenly distributed, the stability of the support plate 211 can be improved when its elastic force is compressed or restored. By setting the guide rod 5, the guiding and limiting effect of the support plate 211 during longitudinal displacement can be further achieved.

[0041] Further, refer to Figure 3 and Figure 4 The unidirectional elastic pendulum 243 includes a crescent plate 2431, a counterweight ball 2432 and a preload spring 2433. One end of the crescent plate 2431 is hinged to the side wall of the rotating disk 242. The counterweight ball 2432 is fixedly connected to the outer convex surface of the crescent plate 2431 and one side close to the hinge point. The rotating disk 242 is provided with a flange block 2434 on the inner concave surface of the crescent plate 2431. The rotating disk 242 is fixedly connected to the rotating shaft 10. A flange plate is fixedly mounted on the rotating shaft 10. One end of the preload spring 2433 is fixedly connected to the inner concave surface of the crescent plate 2431, and the other end is fixedly connected to the flange plate. The ratchet teeth of the ratchet 241 are in the opposite direction to the direction of each crescent plate 2431. The high-speed rotation of the rotating shaft 10 drives each crescent plate 2431 to be thrown out of the rotating disk 242 and engage with the ratchet teeth of the ratchet 241 to drive the wheel axle 11 of the ratchet 241 to rotate.

[0042] In the above embodiment, when the turntable 242 rotates, the crescent plate 2431 can realize the outward swing of the centrifugal inertia force under the pulling force of the counterweight ball 2432, and its unique crescent curvature tip is inserted into the ratchet tooth gap of the ratchet 241. The pre-tightening spring 2433 provided therein can realize the effect of pre-tightening and resetting the crescent plate 2431. When the turntable 242 does not rotate, the crescent plate 2431 can achieve the retraction effect.

[0043] Further, refer to Figure 6 In order to make the crescent plate 2431 fully contact with the ratchet 241, it is necessary for each crescent plate 2431 to achieve the effect of synchronous rotation as much as possible. Therefore, in this embodiment, the two adjacent crescent plates 2431 are hinged by a connecting rod 6, and the connecting rod 6 is parallel to the shortest straight line between the hinge points of the two crescent plates 2431. Multiple connecting rods 6 are used to synchronize the expansion or contraction of each crescent plate 2431.

[0044] Further, refer to Figure 3In order to further enhance the buffering effect of the bellows 215 on the barbell, the present embodiment has a support seat 7 fixedly connected to the side of the base 213 away from the tail of the recliner 1, a leg connected to one side of the support seat 7, a concave cavity 71 is provided in the support seat 7, the concave cavity 71 is connected to an opening on a side close to the bracket, a liquid storage tank 8 is fixedly connected in the concave cavity 71, the liquid storage tank 8 is filled with a buffer solution, one end of the wheel axle 11 away from the cam 233 is inserted into the liquid storage tank 8, and the two are sealed and rotatably connected, and a plurality of stirring blades 9 are fixedly connected to the circumference of the part of the wheel axle 11 extending into the liquid storage tank 8.

[0045] In the above embodiments, after the wheel axle 11 rotates, the stirring blades 9 in the liquid storage tank 8 can also be driven to rotate synchronously to achieve stirring of the buffer solution, and the buffer solution is used to provide resistance to the stirring blades 9 to achieve the purpose of buffering, wherein the buffer solution can be water or a solution with a certain viscosity.

[0046] Further, refer to Figure 3 The wheel shaft 11 is sealed with the liquid storage tank 8 through a dynamic sealing ring.

[0047] Further, refer to Figure 1 The upper part of the support plate 211 is provided with a groove matching the arc surface at the bottom of the weight bell piece, which is used to limit the deviation of the weight bell piece, and a rubber layer for vibration damping is arranged in the groove.

[0048] During the trainee's muscle limit training of bench press, when the energy of the arms is frequently consumed and enters the extreme fatigue state and it is difficult to provide resistance to the gravity of the barbell, the up and down movement of the barbell can drive the two sliders 42 and the rack plate 43 to move vertically synchronously. The downward displacement of the rack plate 43 can mesh with the gear 44 of the rotating shaft 10. Since the rack plate 43 is located on the front side of the gear 44 and the tooth surface of the rack plate 43 extends backward, it can drive the rotating shaft 10 and the gear 44 to rotate clockwise. At this time, the turntable 242 will rotate at a high speed together with the rotating shaft 10. When the turntable 242 rotates, the crescent plate 2431 can realize the outward swing of the centrifugal inertia force under the pulling force of the counterweight ball 2432, and use its unique crescent curvature tip to get into the ratchet gap of the ratchet wheel 241, thereby driving the rotation of the wheel shaft 11. When the wheel shaft 11 rotates, it will drive the cam 233 to rotate, and the cam 233 will frequently push up the wedge body 232 to rise and fall, thereby realizing the driving pin 2221 and the plug The hole 2111 is disengaged, thereby prompting the compression spring 212 to reset its height. During this process, the two wind blocking plates 2141 will rotate upward to provide a high-speed entry space for the gas flowing into the bellows 215 at high speed, so that the bellows 215 can be quickly inflated. During the upward movement of the support plate 211, an upward lifting force is applied to the barbell. At this time, the barbell relies on its downward kinetic energy to apply downward pressure to the support plate 211. At this time, the gas in the bellows 215 will flow downward to each air inlet hole 2131. Each air inlet hole 2131 The two air baffles 2141 are closed, and the air in the bellows 215 is squeezed and quickly passes through the middle hole of the air baffle 2141 with a smaller aperture. At this time, the buffering of the compression spring 212 and the damping force of the air baffle 2141 form an effect of slowly lowering the support plate 211. At the same time, after the wheel axle 11 rotates, the stirring blade 9 in the liquid storage tank 8 is also driven to rotate synchronously to achieve stirring of the buffer solution, and the resistance given to the stirring blade 9 by the buffer solution is used to achieve the purpose of further buffering.

[0049] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A muscle training device for sports training, characterized in that: It comprises a buffer part (2) respectively connected to both sides of the reclining chair (1) for slowing down the instantaneous falling speed of the barbell, and the buffer part (2) comprises: The energy absorbing component (21) comprises a base (213) horizontally fixedly connected to the side wall of the reclining chair (1) via a bracket, a support plate (211) located above the base (213) and used for supporting a barbell weight plate, a bellows (215) fixedly connected between the base (213) and the support plate (211), and a plurality of compression springs (212), wherein a portion of the base (213) located within the minimum diameter of the bellows (215) is vertically provided with a plurality of air inlet holes (2131), and each air inlet hole (2131) is provided with a flow limiting valve (214) for reducing the outflow of gas in the bellows (215); The limiting assembly (22) comprises a slide rail (221) horizontally fixed to the bracket and a spring latch (222) sliding in the slide rail (221); a plug hole (2111) is formed on the side wall of the support plate (211); The pin removal assembly (23) comprises a shaft (231) fixedly connected to the side wall of the spring latch (222), a wedge-shaped body (232) disposed below the shaft (231) and slidably connected to the bracket, and a cam (233) disposed below the wedge-shaped body (232), wherein the cam (233) is rotatably connected to the bracket via a wheel shaft (11); The instantaneous trigger assembly (24) comprises a ratchet (241) fixedly sleeved on the wheel shaft (11), a rotating disk (242) located below the ratchet (241), and a plurality of groups of one-way elastic swing members (243) connected to the peripheral side of the rotating disk (242). The rotating disk (242) is rotatably connected to the bracket via a rotating shaft (10). The instantaneous fall of the barbell drives the rotating disk (242) to rotate at a high speed, and each one-way elastic swing member (243) extends outwards due to centrifugal force and drives the ratchet (241) to rotate.

2. A muscle training device for sports training as claimed in claim 1, characterized in that: The number of the air inlet holes (2131) is multiple and evenly distributed in a coaxial ring shape.

3. A muscle training device for sports training as claimed in claim 1, characterized in that: The two protection bars (3) are provided with guide grooves (31) in the vertical direction. The instantaneous trigger assembly (24) is connected to the handle of the barbell via a driving member (4). The driving member (4) comprises: A guide rail (41) is fixedly connected to the upper end of the guide groove (31) of the protection bar (3), a slider (42) is slidably connected in the guide rail (41), and two ends of the handle of the barbell respectively penetrate the sliders (42) on both sides; A rack plate (43) is fixedly connected to the bottom of the guide rail (41), and the tooth surface of the rack plate (43) faces one side of the rear of the recliner (1); The gear (44) is fixedly sleeved on the rotating shaft (10) of the rotating disk (242), the gear (44) is located at the bottom of the guide groove (31), and the rack plate (43) is meshed with the gear (44).

4. A muscle training device for sports training as claimed in claim 3, characterized in that: The flow limiting valve (214) comprises two semi-annular air blocking plates (2141) and tension springs (2142) respectively fixedly connected to the lower surfaces of the two air blocking plates (2141); the two air blocking plates (2141) are both placed on the upper surface of the base (213) and are respectively hinged to the two sides of the air inlet (2131); the base (213) is provided with two countersunk grooves; the other end of the tension spring (2142) is placed in the countersunk groove and is fixedly connected to the inner wall of the base (213); when the two air blocking plates (2141) rotate in similar directions, they are spliced ​​to form a complete annular plate.

5. A muscle training device for sports training as claimed in claim 1, characterized in that: The number of the compression springs (212) is multiple and evenly distributed around the bellows (215). A guide rod (5) is vertically inserted in the middle of each compression spring (212). The upper end of the guide rod (5) is fixedly connected to the lower surface of the support plate (211), and the lower end of the guide rod (5) passes through the base (213) and is slidably connected to the base (213).

6. A muscle training device for sports training as claimed in claim 1, characterized in that: The one-way elastic swing element (243) comprises a crescent plate (2431), a weighted ball (2432) and a preload spring (2433); one end of the crescent plate (2431) is hinged to the side wall of the rotating disk (242); the weighted ball (2432) is fixedly connected to the outer convex surface of the crescent plate (2431) and the side close to the hinge point; the rotating disk (242) is provided with a flange block (2434) on the inner concave side of the crescent plate (2431); the rotating disk (242) and the rotating shaft (10 ), a flange is mounted on the rotating shaft (10), one end of the preload spring (2433) is fixedly connected to the inner concave surface of the crescent plate (2431), and the other end is fixedly connected to the flange. The ratchet teeth of the ratchet wheel (241) are oriented in the opposite direction to the crescent plates (2431). The high-speed rotation of the rotating shaft (10) drives the crescent plates (2431) to be thrown out of the rotating disk (242) and engage with the ratchet teeth of the ratchet wheel (241) to drive the wheel shaft (11) of the ratchet wheel (241) to rotate.

7. A muscle training device for sports training as claimed in claim 6, characterized in that: Two adjacent crescent plates (2431) are hingedly connected via a connecting rod (6), the connecting rod (6) is parallel to the shortest straight line between the hinge points of each of the two crescent plates (2431), and a plurality of connecting rods (6) are used to synchronize the expansion or contraction of each crescent plate (2431).

8. A muscle training device for sports training as claimed in claim 1, characterized in that: A support seat (7) is fixedly connected to one side of the base (213) away from the rear of the recliner (1), a support leg is connected to one side of the support seat (7), a concave cavity (71) is provided in the support seat (7), the concave cavity (71) is connected to an opening on one side close to the bracket, a liquid storage tank (8) is fixedly connected in the concave cavity (71), and the liquid storage tank (8) is filled with a buffer solution. One end of the wheel shaft (11) away from the cam (233) is inserted into the liquid storage tank (8), and the two are sealed and rotatably connected. A plurality of stirring blades (9) are fixedly connected to the circumference of the portion of the wheel shaft (11) extending into the liquid storage tank (8).

9. A muscle training device for sports training as claimed in claim 8, characterized in that: The wheel shaft (11) is sealed with the liquid storage tank (8) via a dynamic sealing ring.

10. A muscle training device for sports training as claimed in claim 1, characterized in that: The upper part of the support plate (211) is provided with a groove matching the arc surface of the bottom of the weighted bell piece, which is used to limit the deviation of the weighted bell piece, and a rubber layer for vibration damping is arranged in the groove.

Images