Tension trainer for fitness

Abstract

The invention discloses a tension trainer for fitness, which relates to the technical field of training instruments and comprises a support frame, supports arranged on two sides of the upper end face of the support frame, a plurality of groups of reinforcing plates arranged between the supports on the two sides, movable arm frames arranged on the supports on the two sides respectively, first telescopic plates arranged at the bottom ends of the movable arm frames on the two sides, and reinforcing rods arranged in the first telescopic plates on the two sides. According to the device, vertical kinetic energy is converted into elastic potential energy through cooperation of an inserting piece and an auxiliary piece, muscle confrontation loads and counter weight impact noise are reduced, and the device has the advantages of being capable of reducing vibration, capable of reducing vibration, capable of reducing noise and high in practicability. By adjusting the position of the balancing weight on the outer side of the reinforcing rod, the power arm is accurately shortened, the load peak value of the fragile joints such as shoulders and knees can be remarkably reduced, and the loss of instruments caused by repeated disassembly and assembly is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fitness equipment, more particularly, it relates to a body-building tensile training device. BACKGROUND

[0002] The body-building tensile training device is a common fitness equipment for simulating various resistance training actions, and its core principle is that when a user pulls a handle or a grip, resistance set inside the equipment needs to be overcome to complete the action, so as to effectively stimulate the target muscle group, and achieve the purpose of enhancing muscle strength, improving endurance, shaping body shape and improving sports performance.

[0003] The traditional resistance training equipment, especially in the system relying on weight blocks or barbell pieces, has inherent use experience and design bottlenecks. When the user performs actions such as high-position pull-down or rowing involving vertical trajectory, the violent impact of the weight block when released at the end of the action will continuously produce significant noise pollution, which not only disturbs the training environment, but also causes impact loss to the equipment itself. Since the weight block is only driven by gravity, the muscle is often forced to resist the gravitational potential energy in an inefficient state, making it difficult to achieve truly constant tension or compliant resistance output. Therefore, we propose a body-building tensile training device. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the present application is to provide a body-building tensile training device.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a support frame is provided, support frames are arranged on both sides of the upper end surface of the support frame, a plurality of reinforcing plates are arranged between the two support frames, a movable arm frame is arranged on each of the two support frames, a telescopic plate one is arranged at the bottom end of each movable arm frame, a reinforcing rod is arranged in each telescopic plate one, a weight block is arranged on the outer wall of each reinforcing rod, a connecting plate is arranged at the middle position of each reinforcing rod, an auxiliary mechanism is arranged on the upper end surface of each movable arm frame, the auxiliary mechanism and the connecting plate cooperate to buffer the training device, the auxiliary mechanism includes a support piece, a deformation piece is arranged on the upper end surface of the support piece, an inserting piece is arranged at the bottom end of the connecting plate, an auxiliary piece is arranged on the upper end surface of the support piece, the inserting piece and the auxiliary piece cooperate, and an adjusting mechanism is further included, the adjusting mechanism includes a driving piece arranged at the bottom end of the support piece, a ring-shaped piece is arranged on the upper end surface of the driving piece, a movable piece is arranged on the inner side of the ring-shaped piece, and the ring-shaped piece and the movable piece cooperate to adjust the weight block.

[0006] Preferably, the support piece includes an auxiliary plate arranged on both sides of the upper end surface of the support frame, a circular plate is arranged between the two auxiliary plates, a sliding groove is arranged on the upper end surface of each auxiliary plate, and a slot is arranged on the upper end surface of the circular plate.

[0007] Preferably, the deforming piece comprises a volute ring arranged on the slotted upper end face, a variable diameter portion and an annular portion are formed in the volute ring, an annular clamping groove is formed in the volute ring, the inserting piece comprises a shaft seat arranged on the bottom end of the connecting plate, a plug rod is arranged on the bottom end of the shaft seat, and a positioning block is arranged on the outer wall of the plug rod.

[0008] Preferably, the auxiliary piece comprises a sleeve arranged on the slotted upper end face, an auxiliary groove is formed in the inner wall of the sleeve, an arc-shaped groove is formed in the inner wall of the auxiliary groove, the positioning block is slidably connected in the arc-shaped groove, a clamping rod is arranged on the outer wall of the sleeve, and the clamping rod is slidably connected in the annular clamping groove.

[0009] Preferably, the driving piece comprises a motor arranged on the bottom end of the circular plate, a gear is arranged on one end of the motor rotor shaft penetrating through the circular plate, an annular strip is arranged on the upper end face of the circular plate, a gear ring is arranged on the inner wall of the annular strip, the gear is engaged with the gear ring, a support strip is circumferentially arranged on the upper end face of the annular strip, and a plurality of groups of support strips are slidably connected on the outer wall of the sleeve.

[0010] Preferably, the annular piece comprises an annular plate arranged on the upper end faces of a plurality of groups of support strips, an annular groove is formed in the inner side of the annular plate, and a deflection groove is circumferentially arranged on the inner wall of the annular groove.

[0011] Preferably, the movable piece comprises a sliding plate slidably connected on the upper end faces of two side sliding grooves, a strip-shaped plate is arranged on one end of the two side sliding plates away from each other, a limiting rod is arranged on the bottom end of the two side strip-shaped plates, the limiting rod is slidably connected in the deflection groove, a second telescopic plate is arranged on one end of the two side sliding plates away from each other, a locking block is arranged on the upper end face of the two side second telescopic plates, and the locking block is correspondingly arranged on the bottom end of the counterweight block.

[0012] Preferably, the displacement mechanism comprises a rotating piece arranged on the upper end face of the annular plate, a positioning piece is arranged on the outer wall of the reinforcing rod, the positioning piece and the rotating piece are matched, the rotating piece comprises a protruding block arranged on the upper end face of the annular plate, a center hole is formed in the center position of the protruding block, and an inclined groove is circumferentially arranged on the outer side of the protruding block.

[0013] Preferably, the positioning piece comprises a positioning portion arranged in the two side inclined grooves, a third telescopic plate is arranged on the outer side of the two side positioning portions, and the extending end of the two side third telescopic plates is arranged on the outer wall of the reinforcing rod.

[0014] Preferably, a combination plate is arranged on the upper end face of the support frame, a vertical plate is arranged on the upper end face of the combination plate, a seat cushion is arranged in the vertical plate, a reinforcing seat is arranged on the upper end face of the combination plate, limiting rollers are arranged on the inner wall of the reinforcing seat, and a back cushion is arranged on one end of the reinforcing plate.

[0015] Compared with the prior art, the present application has the following advantages: 1. In the present application, the counterweight on the telescopic plate is driven upward, and the user can control the number of counterweights according to his needs. When the user exerts force to the center to lift the counterweight, the vertical kinetic energy is converted into elastic potential energy through the cooperation of the inserted part and the auxiliary part. When the muscle relaxes in the centrifugal stage, the deformed part rebounds to release potential energy, which reversely pushes the counterweight to slow down, and simultaneously reduces the muscle resistance load and the impact noise of the counterweight.

[0016] 2. In the present application, the support bar drives the ring plate to rotate synchronously, and the deflection of the deflection groove drives the linear motion of the two side slides in the horizontal direction, thereby driving the linear motion of the counterweights on the two telescopic plates in the horizontal direction. This can accurately shorten the power arm and significantly reduce the load peak of fragile joints such as shoulders and knees. The training effect in unstable state is much better than the linear load caused by simply increasing weight, and the damage to the equipment caused by repeated disassembly and assembly is avoided.

[0017] 3. In the present application, the ring plate drives the convex block to rotate, and the inclined grooves on both sides of the convex block rotate synchronously. The positioning part inside the telescopic plate three is slidingly connected in the inclined groove, and the displacement of the telescopic plate three in the vertical direction is driven by the deflection of the inclined groove. When the reinforcing rod moves up, it is easier for the trainer to start, the shoulder and elbow pressure is small, and it is suitable for explosive force training. When the reinforcing rod moves down, the action stroke is lengthened, and the muscle stretching feeling is enhanced, so as to adapt to different training groups.

[0018] 4. In the present application, the adjustable seat cushion is arranged in the vertical plate, and the adjustable backrest is arranged in the reinforcing seat. The backrest and the seat cushion support the human body, assist the user to exercise the device, and also can be used for exercising the muscles of the waist, abdomen and back of the user. At the same time, the limiting roller is fixed inside the reinforcing seat to further support the user and ensure the stability during exercise. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The present application proposes a whole structure schematic diagram of a body-building tension training device; Figure 2 The present application proposes a side view schematic diagram of a body-building tension training device; Figure 3 The present application proposes a displacement mechanism schematic diagram of a body-building tension training device; Figure 4 The present application proposes an adjusting mechanism schematic diagram of a body-building tension training device; Figure 5 The present application proposes an internal schematic diagram of a body-building tension training device; Figure 6 The present application proposes an inserted part schematic diagram of a body-building tension training device; Figure 7The application provides a schematic view of a ring-shaped part of a body-building tensile force trainer. Figure 8 The application provides a top view of a circular plate of a body-building tensile force trainer.

[0020] In the figure: 100, a support frame; 101, a support; 102, a reinforcing plate; 103, a movable arm frame; 104, an extension plate one; 105, a reinforcing rod; 106, a counterweight; 107, a connecting plate; 108, a combination plate; 109, a vertical plate; 110, a cushion; 111, a reinforcing seat; 112, a limiting roller; 113, a back cushion; 200, an auxiliary mechanism; 201, a supporting part; 202, a deforming part; 203, an inserting part; 204, an auxiliary part; 300, an adjusting mechanism; 301, a driving part; 302, a ring-shaped part; 303, a movable part; 400, a displacement mechanism; 401, a rotating part; 402, a positioning part; 201a, an auxiliary plate; 201b, a circular plate; 201c, a sliding groove; 201d, a slotted hole; 202a, a spiral ring; 202b, a variable-diameter part; 202c, a ring-shaped part; 202d, a ring-shaped clamping groove; 203a, a shaft seat; 203b, an inserting rod; 203c, a positioning block; 204a, a sleeve; 204b, an auxiliary groove; 204c, an arc-shaped groove; 204d, a clamping rod; 301a, a motor; 301b, a gear; 301c, a ring-shaped strip; 301d, a gear ring; 301e, a supporting strip; 302a, a ring-shaped plate; 302b, a ring-shaped groove; 302c, a deflection groove; 303a, a sliding plate; 303b, a strip-shaped plate; 303c, a limiting rod; 303d, an extension plate two; 303e, a locking block; 401a, a protruding block; 401b, a center hole; 401c, an inclined groove; 402a, a positioning part; 402b, an extension plate three. DETAILED DESCRIPTION

[0021] In order to make the above objectives, features and advantages of the application more obvious and understandable, the specific embodiments of the application are described in detail below with reference to the accompanying drawings.

[0022] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the application, but the application can also be implemented in other ways different from the description, and those skilled in the art can make similar generalizations without departing from the concept of the application, so the application is not limited to the specific embodiments disclosed below.

[0023] Secondly, "one embodiment" or "an embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor does it mean an embodiment that is separate from or mutually exclusive with other embodiments.

[0024] Example 1 further illustrates the resistance training device for fitness proposed in this invention, including a support frame 100. Support brackets 101 are detachably mounted on both sides of the upper surface of the support frame 100 via bolts. Multiple sets of reinforcing plates 102 are fixedly connected between the two support brackets 101. Movable boom frames 103 are rotatably connected to the two support brackets 101 respectively. Telescopic plates 104 are rotatably connected to the bottom ends of the two telescopic boom frames 103. When the displacement mechanism 400 is adjusted, the position of the telescopic plates 104 is locked, preventing telescopic movement. Reinforcing rods 105 are fixedly connected inside the two telescopic plates 104. Reinforcing rods 105 can be placed on the outer walls of the two reinforcing rods 105. The counterweight 106 has cylindrical locking heads installed on the outer walls of the reinforcing rods 105 on both sides. A connecting plate 107 is fixedly connected to the middle of the reinforcing rods 105. An auxiliary mechanism 200 is provided on the upper end face of the boom frame 103. The auxiliary mechanism 200 and the connecting plate 107 cooperate to buffer the trainer. A connecting plate 108 is fixedly connected to the upper end face of the support frame 100. A vertical plate 109 is fixedly connected to the upper end face of the connecting plate 108. A seat cushion 110 is detachably installed inside the vertical plate 109. A reinforcing seat 111 is fixedly connected to the upper end face of the connecting plate 108. Limit rollers 112 are provided on both sides of the inner wall of the reinforcing seat 111. A backrest 113 is detachably installed on one end of the reinforcing plate 102. Depend on Figures 1 to 2 It can be seen that the boom frame 103 is rotatably connected to the support 101. Fitness personnel can perform arm bending exercises through the boom frame 103. The boom frame 103 is equipped with a reinforcing bar 105 through two sets of telescopic plates 104. Counterweights 106 can be installed on both sides of the reinforcing bar 105. Fitness personnel can increase the number of counterweights 106 on the outer wall of the reinforcing bar 105 to meet the exercise needs of different groups. The muscles of the human upper arm mainly include the biceps brachii and triceps brachii. The biceps brachii is a muscle with two heads. Its main function is to flex the arm. When flexing the arm, another muscle, the triceps brachii, is also used. Through some forearm raising movements, the brachialis can be fully exercised. The device features an adjustable seat 110 within the vertical plate 109 and an adjustable backrest 113 within the reinforcing seat 111. The backrest 113 and seat 110 support the human body, assisting the user in exercising with the device while also exercising the user's abdominal and back muscles. Additionally, the device has a limit roller 112 fixed inside the reinforcing seat 111 for further support, ensuring stability during exercise. Because the energy of muscle eccentric contraction phase is wasted in traditional counterweight training, in order to reduce the muscle burden of the user during use, the device is provided with an auxiliary mechanism 200, which includes a support 201, the upper end surface of the support 201 is provided with a deformation part 202, the bottom end of the connecting plate 107 is provided with an inserting part 203, and the upper end surface of the support 201 is provided with an auxiliary part 204; when the user exerts force to lift the counterweight block 106, the vertical kinetic energy is converted into elastic potential energy through the cooperation of the inserting part 203 and the auxiliary part 204; when the muscle relaxes in the eccentric phase, the deformation part 202 rebounds to release potential energy, and the counterweight block 106 is pushed in the opposite direction to slow down, thereby reducing the muscle resistance load and the impact noise of the counterweight; And the device further adjusts the training device, and another way of adjusting except adding the counterweight block 106 is added, which includes an adjusting mechanism 300, the adjusting mechanism 300 includes a driving part 301 arranged at the bottom end of the support 201, the upper end surface of the driving part 301 is provided with an annular part 302, the inner side of the annular part 302 is provided with a movable part 303, and the annular part 302 and the movable part 303 cooperate to adjust the counterweight block 106; in actual use, the position of the counterweight block 106 outside the reinforcing rod 105 is adjusted, the power arm is accurately shortened, the load peak of fragile joints such as shoulders and knees can be significantly reduced, the anti-rotation torque is induced to activate the deep stabilizer muscle group, the proprioceptive nerve adaptation is improved, and the training effect in unstable state is far better than the linear load caused by simply increasing the weight, and the damage of repeatedly disassembling and assembling to the equipment is avoided; The displacement mechanism 400 further includes a rotating part 401 arranged on the upper end surface of the annular plate 302a, and a positioning part 402 arranged on the outer wall of the reinforcing rod 105, which cooperates with the rotating part 401 to adjust the position of the reinforcing rod 105 in the vertical direction; when the reinforcing rod 105 moves upward, the user starts more easily, the shoulder and elbow pressure is small, and it is suitable for explosive force training; when the reinforcing rod 105 moves downward, the action stroke is lengthened, and the muscle stretching feeling is enhanced; Working principle: in use, the user sits on the cushion 110, then holds the two sets of movable arm frame 103 hand-held part, then the user exerts an external force, so that the movable arm frame 103 rotates on the support 101, so that the telescopic plate 104 drives the counterweight 106 on the reinforcing rod 105 to move upward, the user can control the number of counterweight 106 according to his own needs, when the user exerts force to the center to lift the counterweight 106, through the cooperation of the insert piece 203 and the auxiliary piece 204, the vertical kinetic energy is converted into elastic potential energy, when the centrifugal stage muscle relaxes, the deforming piece 202 rebounds to release potential energy, reversely pushes the counterweight 106 to slow down, synchronously reduces the muscle resistance load and the counterweight impact noise, and the device adjusts the position of the counterweight 106 outside the reinforcing rod 105, accurately shortens the power arm, can significantly reduce the load peak value of the fragile joints such as shoulders and knees, and the training effect in unstable state is far better than that of linear load caused by simple weight increase, avoids the damage of repeated disassembly and assembly to the equipment, and adjusts the displacement of the reinforcing rod 105 in the vertical direction through the displacement mechanism 400, when the reinforcing rod 105 moves upward, the training personnel start more easily, the shoulder and elbow pressure is small, and it is suitable for explosive force training, when the reinforcing rod 105 moves downward, the action stroke is lengthened, and the muscle stretching feeling is enhanced.

[0025] The second embodiment increases the following technical features on the basis of the first embodiment: the auxiliary mechanism 200 converts the vertical kinetic energy into elastic potential energy through the cooperation of the insert piece 203 and the auxiliary piece 204, reduces the muscle resistance load and the counterweight impact noise, and the supporting piece 201 includes the auxiliary plates 201a fixedly connected to the two sides of the end surface of the support frame 100, the circular plates 201b integrally formed between the two sides of the auxiliary plates 201a, the sliding grooves 201c provided on the upper end surfaces of the two sides of the auxiliary plates 201a, and the slotted 201d provided on the upper end surfaces of the circular plates 201b. From Figures 3 to 8 It can be known that the L-shaped auxiliary plates 201a are fixedly connected to the two sides of the upper end surface of the supporting plate, the circular plates 201b are integrally formed between the two sides of the L-shaped auxiliary plates 201a, the circular slotted 201d is recessed on the upper end surface of the circular plate 201b, and the T-shaped sliding grooves 201c are correspondingly provided on the upper end surfaces of the two sides of the auxiliary plates 201a, the movable piece 303 is slidingly connected in the sliding grooves 201c, and the stability of the whole device is ensured. The deformable component 202 includes a spiral ring 202a fixedly connected to the upper end face of the slot 201d. The spiral ring 202a is made of elastic rubber. A variable diameter portion 202b and an annular portion 202c are formed inside the spiral ring 202a. An annular groove 202d is formed inside the spiral ring 202a. The insert component 203 includes a bearing 203a rotatably connected to the bottom end of the connecting plate 107. An insert rod 203b is fixedly connected to the bottom end of the bearing 203a. The outer wall of the insert rod 203b... The upper part is fixedly connected to the positioning block 203c. The auxiliary component 204 includes a sleeve 204a rotatably connected to the upper end face of the slot 201d. An auxiliary groove 204b is formed on the inner wall of the sleeve 204a. An arc groove 204c is formed on the inner wall of the auxiliary groove 204b. The positioning block 203c is slidably connected in the arc groove 204c. A locking rod 204d is fixedly connected to the outer wall of the sleeve 204a. The locking rod 204d is slidably connected in the annular locking groove 202d. Depend on Figures 4 to 8 It can be seen that the spiral ring 202a is an annular structure with a continuously changing diameter. The spiral ring 202a is made of elastic rubber and is fixedly connected to the upper end face of the slot 201d. The spiral ring 202a includes a variable diameter part 202b and an annular part 202c. The diameter of the annular part 202c remains unchanged, while the diameter of the variable diameter part 202b gradually increases. An annular groove 202d is formed on the inner side of the spiral ring 202a. The upper end face of the circular slot 201d is rotatably connected to the sleeve 204a through a bearing. A fixed connection is made to the outer wall of the sleeve 204a. The locking rod 204d is slidably connected in the annular groove 202d. A cylindrical auxiliary groove 204b is formed in the sleeve 204a, and an arc groove 204c is formed in the auxiliary groove 204b. The bottom end of the connecting plate 107 is rotatably connected to the bearing 203a. At the same time, a cylindrical insert rod 203b is fixedly connected to the bottom end of the bearing 203a. A positioning block 203c is fixedly connected to the outer wall of the insert rod 203b. A compression spring (not shown in the figure) is fixedly connected to the bottom end of the auxiliary groove 204b. The bottom end of the insert rod 203b is fixed to the upper end face of the compression spring. When the positioning block 203c on the insertion rod 203b moves downward, the corresponding positioning block 203c is slidably connected in the arc groove 204c. Through the deflection of the arc groove 204c, the locking rod 204d on the outer wall of the sleeve 204a is slidably connected in the annular locking groove 202d. The locking rod 204d abuts against the spiral ring 202a. When the muscle relaxes during the centrifugal stage, the deformable part 202 releases potential energy and pushes the counterweight block 106 to descend slowly in the opposite direction. Working principle: in use, the user sits on the cushion 110, then both hands hold the two sets of movable arm frame 103 hand-held part, then the user applies external force, so that the movable arm frame 103 rotates on the support 101, so that the telescopic plate 104 drives the counterweight 106 on the reinforcing rod 105 to move upward, the reinforcing rod 105 moves upward, drives the plug rod 203b at the bottom of the connecting plate 107 to move upward, at this time the positioning block 203c on the outer wall of the plug rod 203b is slidingly connected in the arc-shaped groove 204c, due to the deflection of the arc-shaped groove 204c, the clamping rod 204d on the outer wall of the sleeve 204a is slidingly connected in the annular clamping groove 202d, at this time the clamping rod 204d rotates clockwise, the clamping rod 204d gradually decreases along the diameter of the vortex ring 202a, when the centrifugal stage muscle relaxes, the clamping rod 204d is driven counterclockwise due to the downward movement of the plug rod 203b, at this time the clamping rod 204d gradually increases along the diameter of the vortex ring 202a, the vortex ring 202a pushes the counterweight 106 downward, synchronously reducing the muscle resistance load and the impact noise of the counterweight.

[0026] The third embodiment is based on the second embodiment and adds the following technical features: further comprising an adjusting mechanism 300, the adjusting mechanism 300 adjusts the counterweight 106 by cooperating with the ring-shaped part 302 and the movable part 303, the driving part 301 includes a motor 301a detachably installed at the bottom end of the circular plate 201b, the motor 301a is adjusted by an external controller, one end of the rotor shaft of the motor 301a penetrates through the circular plate 201b and is fixedly connected with a gear 301b, the circular plate 201b is rotatably connected with a ring-shaped strip 301c on the upper end surface through a bearing, the ring-shaped strip 301c is fixedly connected with a gear ring 301d on the inner wall, the gear 301b is engaged with the gear ring 301d, the ring-shaped strip 301c is circumferentially fixedly connected with a support strip 301e on the upper end surface, and a plurality of support strips 301e are slidingly connected on the outer wall of the sleeve 204a; From Figures 3 to 8 It can be seen that the motor 301a is detachably installed at the bottom end of the circular plate 201b, the motor 301a is controlled by an external controller, the motor 301a drives the gear 301b to rotate, and since the gear 301b is engaged with the gear ring 301d, the ring-shaped strip 301c outside the gear ring 301d is driven to rotate, and when the ring-shaped strip 301c rotates, the support strip 301e above it rotates synchronously; The annular component 302 includes an annular plate 302a fixedly connected to the upper surface of multiple sets of support bars 301e. An annular groove 302b is formed on the inner side of the annular plate 302a. A deflection groove 302c is circumferentially provided on the inner wall of the annular groove 302b. The movable component 303 includes a sliding plate 303a slidably connected to the upper surface of two sliding grooves 201c. A strip plate 303b is fixedly connected to one end of the two sliding plates 303a that is close to each other. A limit rod 303c is fixedly connected to the bottom end of the two strip plates 303b. The limit rod 303c is slidably connected within the deflection groove 302c. The two sliding plates 302a... Telescopic plate 303d is fixedly connected to one end of 3a that is far apart from each other. Locking block 303e is fixedly connected to the upper surface of telescopic plate 303d on both sides. Locking block 303e is installed at the bottom of counterweight 106. The locking block 303e can be clamped with bolts to fix the position of counterweight 106. This device can significantly reduce the peak load of vulnerable joints such as shoulder and knee by adjusting the position of counterweight 106 outside the reinforcing rod 105 and precisely shortening the power arm. The training effect in unstable state is far better than the linear load brought by simply increasing weight, and avoids the wear and tear of the equipment caused by repeated disassembly and assembly. Depend on Figures 3 to 8 It can be seen that an annular groove 302b is formed on the outer side of the annular plate 302a. The annular groove 302b is located in the middle of the annular plate 302a. At this time, the inner wall of the annular groove 302b is circumferentially provided with a deflection groove 302c. A strip plate 303b is slidably connected in the deflection groove 302c through a limiting rod 303c. A sliding plate 303a is integrally formed at the bottom end of the strip plate 303b. The sliding plate 303a is slidably connected in the slide groove 201c through a T-shaped block. Due to the deflection effect of the deflection groove 302c, the sliding plates 303a on both sides are driven to make linear motion in the horizontal direction. The ends of the sliding plates 303a on both sides that are far apart from each other are fixedly connected to a telescopic plate 303d, thereby driving the counterweight 106 on the telescopic plates 303d on both sides to make linear motion in the horizontal direction. Working principle: In actual use, the motor 301a is adjusted by an external controller, which drives the gear 301b to rotate. Since the gear 301b meshes with the gear ring 301d, it drives the annular bar 301c on the outside of the gear ring 301d to rotate. When the annular bar 301c rotates, it drives the support bar 301e above it to rotate synchronously. When the support bar 301e rotates, it drives the annular plate 302a to rotate synchronously. The deflection effect of the deflection groove 302c drives the two sliding plates 303a to make linear movements in the horizontal direction. The ends of the two sliding plates 303a that are far apart from each other are fixedly connected to the telescopic plate 303d, which drives the counterweights 106 on the two telescopic plates 303d to make linear movements in the horizontal direction. In this way, the power arm can be shortened precisely, which can significantly reduce the peak load on vulnerable joints such as the shoulder and knee. The training effect in unstable state is far better than the linear load brought by simply adding weight, and the wear and tear on the equipment caused by repeated disassembly and assembly is avoided.

[0027] The embodiment four adds the following technical features on the basis of the embodiment three: further comprising displacement mechanism 400, displacement mechanism 400 comprises rotating piece 401 arranged on the upper end face of annular plate 302a, positioning piece 402 is arranged on the outer wall of reinforcing rod 105, positioning piece 402 and rotating piece 401 are matched, rotating piece 401 comprises protrusion 401a integrally formed on the upper end face of annular plate 302a, central hole 401b is formed in the center position of protrusion 401a, and inclined grooves 401c are arranged on the outer side of protrusion 401a in a circle; When the adjusting mechanism 300 is used, the displacement mechanism 400 is driven to operate synchronously, the positioning piece 402 and the rotating piece 401 are matched to adjust the position of the reinforcing rod 105 in the vertical direction, when the reinforcing rod 105 moves upward, the training personnel starts more easily, the shoulder and elbow pressure is small, and it is suitable for explosive force training, when the reinforcing rod 105 moves downward, the action stroke is lengthened, and the muscle stretching feeling is enhanced, Figures 1 to 8 It can be known that the hollow protrusion 401a is integrally formed above the annular plate 302a, the two groups of inclined grooves 401c are arranged on the outer wall of the protrusion 401a in a circle, the positioning part 402a is slidably connected in the two side inclined grooves 401c, the telescopic plate three 402b is fixedly connected outside the two side positioning parts 402a, and the extending end of the telescopic plate three 402b is fixedly connected on the outer wall of the reinforcing rod 105; Working principle: as can be known from the embodiment 3, when the annular plate 302a rotates, the annular plate 302a drives the protrusion 401a to rotate, the two side inclined grooves 401c of the protrusion 401a rotate synchronously, the positioning part 402a inside the telescopic plate three 402b is slidably connected in the inclined groove 401c, the telescopic plate three 402b is driven to displace in the vertical direction by the deflection of the inclined groove 401c, when the reinforcing rod 105 moves upward, the training personnel starts more easily, the shoulder and elbow pressure is small, and it is suitable for explosive force training, when the reinforcing rod 105 moves downward, the action stroke is lengthened, and the muscle stretching feeling is enhanced, so as to adapt to different training groups.

[0028] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical scheme belonging to the idea of the present application also belongs to the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principle of the present application are also regarded as the protection scope of the present application.

Claims

1. A resistance training device for fitness, comprising a support frame (100), wherein brackets (101) are provided on both sides of the upper end face of the support frame (100), a plurality of reinforcing plates (102) are provided between the two brackets (101), a boom frame (103) is provided on each of the two brackets (101), a telescopic plate (104) is provided at the bottom end of the two boom frames (103), a reinforcing rod (105) is provided inside the two telescopic plates (104), and a counterweight (106) is provided on the outer wall of the two reinforcing rods (105), characterized in that, A connecting plate (107) is provided in the middle of the reinforcing rod (105), and an auxiliary mechanism (200) is provided on the upper end face of the boom (103). The auxiliary mechanism (200) and the connecting plate (107) work together to buffer the trainer. The auxiliary mechanism (200) includes a support member (201), a deformable member (202) is provided on the upper end surface of the support member (201), an insert member (203) is provided on the bottom end of the connecting plate (107), and an auxiliary member (204) is provided on the upper end surface of the support member (201). The insert member (203) and the auxiliary member (204) cooperate with each other. It also includes an adjustment mechanism (300), which includes a drive member (301) disposed at the bottom of the support member (201), an annular member (302) disposed on the upper surface of the drive member (301), and a movable member (303) disposed on the inner side of the annular member (302). The annular member (302) and the movable member (303) cooperate to adjust the counterweight (106).

2. The resistance training device for fitness according to claim 1, characterized in that, The support member (201) includes auxiliary plates (201a) disposed on both sides of the upper end face of the support frame (100), a circular plate (201b) disposed between the two auxiliary plates (201a), a sliding groove (201c) provided on the upper end face of the two auxiliary plates (201a), and a slot (201d) provided on the upper end face of the circular plate (201b).

3. The resistance training device for fitness according to claim 2, characterized in that, The deformable part (202) includes a spiral ring (202a) disposed on the upper end face of the slot (201d), the spiral ring (202a) having a variable diameter part (202b) and an annular part (202c) formed therein, the spiral ring (202a) having an annular groove (202d) formed therein, the insert (203) includes a bearing seat (203a) disposed at the bottom end of the connecting plate (107), the bottom end of the bearing seat (203a) being provided with an insert rod (203b), and a positioning block (203c) being provided on the outer wall of the insert rod (203b).

4. A resistance training device for fitness according to claim 3, characterized in that, The auxiliary component (204) includes a sleeve (204a) disposed on the upper end face of the slot (201d), an auxiliary groove (204b) is formed on the inner wall of the sleeve (204a), an arc groove (204c) is formed on the inner wall of the auxiliary groove (204b), the positioning block (203c) is correspondingly slidably connected in the arc groove (204c), and a locking rod (204d) is disposed on the outer wall of the sleeve (204a), the locking rod (204d) is slidably connected in the annular locking groove (202d).

5. A resistance training device for fitness according to claim 4, characterized in that, The driving component (301) includes a motor (301a) disposed at the bottom end of a circular plate (201b). A gear (301b) is disposed at one end of the rotor shaft of the motor (301a) that passes through the circular plate (201b). An annular bar (301c) is disposed on the upper surface of the circular plate (201b). A gear ring (301d) is disposed on the inner wall of the annular bar (301c). The gear (301b) meshes with the gear ring (301d). A support bar (301e) is disposed circumferentially on the upper surface of the annular bar (301c). Multiple sets of the support bars (301e) are slidably connected to the outer wall of the sleeve (204a).

6. A resistance training device for fitness according to claim 5, characterized in that, The annular component (302) includes an annular plate (302a) disposed on the upper end face of multiple sets of support bars (301e), an annular groove (302b) is formed on the inner side of the annular plate (302a), and a deflection groove (302c) is provided on the inner wall of the annular groove (302b) in a circular shape.

7. A resistance training device for fitness according to claim 6, characterized in that, The movable component (303) includes a sliding plate (303a) slidably connected to the upper surface of the two sliding grooves (201c). A strip plate (303b) is provided at the end of the two sliding plates (303a) that are close to each other. A limit rod (303c) is provided at the bottom end of the two strip plates (303b). The limit rod (303c) is slidably connected to the deflection groove (302c). A telescopic plate (303d) is provided at the end of the two sliding plates (303a) that are far apart from each other. A locking block (303e) is provided on the upper surface of the two telescopic plates (303d). The locking block (303e) is correspondingly provided at the bottom end of the counterweight (106).

8. A resistance training device for fitness according to claim 7, characterized in that, It also includes a displacement mechanism (400), which includes a rotating component (401) disposed on the upper end face of the annular plate (302a). A positioning component (402) is disposed on the outer wall of the reinforcing rod (105). The positioning component (402) and the rotating component (401) cooperate with each other. The rotating component (401) includes a protrusion (401a) disposed on the upper end face of the annular plate (302a). A central hole (401b) is formed at the center of the protrusion (401a). A circumferential groove (401c) is provided on the outer side of the protrusion (401a).

9. A resistance training device for fitness according to claim 8, characterized in that, The positioning component (402) includes a positioning part (402a) disposed in the inclined grooves (401c) on both sides, and a telescopic plate three (402b) is disposed on the outer side of the positioning part (402a) on both sides, and the extended end of the telescopic plate three (402b) on both sides is disposed on the outer wall of the reinforcing rod (105).

10. A resistance training device for fitness according to claim 9, characterized in that, The support frame (100) is provided with a connecting plate (108) on its upper end surface. The connecting plate (108) is provided with a vertical plate (109) on its upper end surface. A cushion (110) is provided inside the vertical plate (109). A reinforcing seat (111) is provided on the upper end surface of the connecting plate (108). Limiting rollers (112) are provided on both sides of the inner wall of the reinforcing seat (111). A backrest (113) is provided at one end of the reinforcing plate (102).

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