Leg pressing device convenient to adjust

Abstract

The utility model relates to the technical field of sports equipment, in particular to a leg pressing device convenient to adjust, which comprises leg pressing frames and a leg pressing rod, two ends of the leg pressing rod are respectively connected with the leg pressing frames, and the height of the leg pressing rod is adjustable. A protective structure and a bearing block are arranged outside the leg pressing rod; the protection structure comprises a mounting lantern ring, a rotating seat, a damping piece and a curved surface base plate; the mounting lantern ring is fixed outside the leg pressing rod, the bearing blocks are fixed at the top of the mounting lantern ring, the rotating seat is rotationally connected between the two bearing blocks, and the bottom of the curved surface base plate is connected with the rotating seat through the damping piece; the interior of the rotating base is of a hollow structure, and the damping piece shrinks towards the interior of the rotating base under the action of external force. And the top of the curved-surface base plate is arc-shaped and is used for comfortably supporting the body. According to the leg pressing device, flexible adjustment and comfortable supporting of the leg pressing device are achieved, and safer and more comfortable leg pressing experience is brought to a user.

Description

Technical Field

[0001] This utility model relates to the field of sports equipment technology, specifically to an easily adjustable leg press device. Background Technology

[0002] Leg stretchers, as an essential tool for warming up and stretching leg muscles, are widely used in daily exercise and sports training. After maintaining a fixed posture for a long time, muscles are often in a tense state. If exercise is suddenly undertaken without proper stretching and relaxation, muscle strains, especially in the legs, are very likely to occur. Strains not only cause physical pain and discomfort but can also lead to falls, sprains, and other accidents during exercise. Therefore, leg stretchers play a crucial role in warming up before exercise.

[0003] Existing technology CN210278126U discloses an easily adjustable leg-pressing training device for sports. This device uses the relative rotation of a shaft and an arc-shaped fixed gear block, and the engagement of the arc-shaped fixed gear block with a gear, to fix the gear and thus fix the height of the lifting rod. While this method achieves a fixed height through the relative rotation of the shaft and the arc-shaped fixed gear block, and the engagement of the arc-shaped fixed gear block with the gear, it still has significant shortcomings in ankle protection. Specifically, the fixed foot arm of this leg-pressing training device lacks a flexible support structure, which may lead to two problems: first, the leg and ankle may slip during warm-up exercises due to the rod-like structure of the fixed foot arm; second, the skin of the ankle is fragile, and direct contact and pressure with the fixed foot arm can easily cause abrasion, redness, and even local skin discomfort. Utility Model Content

[0004] The purpose of this utility model is to provide an easily adjustable leg press device in order to solve at least one of the above-mentioned technical problems. It aims to improve the safety and comfort of the leg press device by adding a flexible support structure, thereby better meeting the needs of users when warming up and stretching.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] An adjustable leg press device includes a leg press frame and a leg press bar. The two ends of the leg press bar are respectively connected to one of the leg press frames, and the height of the leg press bar is adjustable. The leg press bar is provided with a protective structure and a bearing block on its exterior.

[0007] The protective structure includes a mounting collar, a rotating seat, a damping element, and a curved pad; the mounting collar is fixed to the outside of the leg presser, the bearing block is fixed to the top of the mounting collar, the rotating seat is rotatably connected between the two bearing blocks, and the bottom of the curved pad is connected to the rotating seat through the damping element;

[0008] The rotating seat has a hollow interior, and the damping element retracts into the rotating seat under external force; the top of the curved pad is arc-shaped to provide comfortable support for the body.

[0009] Furthermore, the protective structure also includes: a spring rod, a first limiting rod, an internal gear ring, a second limiting rod, and a limiting gear;

[0010] The spring rod, the first limiting rod, and the second limiting rod are all fixed inside the rotating seat;

[0011] A spring rod is fixed inside the rotating seat. The spring rod is a screw with a buffer spring sleeved at each end. Two hinge blocks are slidably sleeved on the middle of the screw of the spring rod, and the opposite ends of the two hinge blocks are respectively connected to one end of the buffer spring. Each hinge block has a first support rod hinged to its top and a second support rod hinged to its bottom. The bottom of the damping element is hinged to the first support rod, and the bottom of the second support rod is hinged to the first limiting rod.

[0012] The internal gear ring is fixed inside the bearing block, and the bearing block is rotatably connected to the rotating seat through a hollow shaft.

[0013] The first longitudinal limiting rod is sleeved and connected to the second transverse limiting rod; a compression spring is sleeved on the end of the second limiting rod away from the first limiting rod, and the second limiting rod passes through the hollow shaft and is connected to the limiting gear; the end of the sleeved compression spring away from the first limiting rod is connected to the inner wall of the rotating seat;

[0014] The internal gear ring is sized to match the limiting gear. When the first limiting rod applies a downward force to the second limiting rod, the second limiting rod pushes the limiting gear to mesh with the internal gear ring.

[0015] Furthermore, the damping component includes: a fixed cylinder, a telescopic rod, and a damping spring;

[0016] The fixed cylinder is fixed to the top of the rotating seat. A telescopic rod is inserted into the inner side of the fixed cylinder. The top of the telescopic rod is connected to the curved pad, and the bottom passes through the rotating seat and is connected to the first support rod. The damping spring is sleeved on the outside of the telescopic rod, and the bottom of the damping spring is sleeved and fixed to the outside of the fixed cylinder.

[0017] Furthermore, multiple sets of damping elements are uniformly arranged at the bottom of each of the curved pads.

[0018] Furthermore, the leg presser also includes a height adjustment component;

[0019] The height adjustment assembly includes an eccentric wheel, a connecting rod, and a guide screw;

[0020] The leg press frame includes a first leg press frame and a second leg press frame; two sets of eccentric wheels and the connecting rod are disposed inside the first leg press frame; the eccentric wheel is rotatably connected to the connecting rod, the side of the eccentric wheel away from the connecting rod is connected to a pulley, the two pulleys are connected by a belt, and one of the pulleys is rotatably connected to a handle disposed outside the first leg press frame;

[0021] The guide screw is longitudinally arranged inside the second leg presser; one end of the leg presser is connected to the connecting rod, and the other end is slidably connected to the guide screw through a lifting ring.

[0022] Furthermore, the height adjustment assembly also includes: a fixing plate, a threaded sleeve, and a limiting sleeve;

[0023] The fixing plate is disposed on the side of the second leg presser away from the first leg presser. The threaded sleeve is disposed on the side of the lifting ring close to the fixing plate. The limiting cylinder is inserted into the fixing plate, and the front end of the limiting cylinder is screwed to the threaded sleeve. The position of the limiting cylinder on the fixing plate is adjustable.

[0024] Furthermore, the fixing plate has multiple pin holes equidistantly arranged longitudinally on the side opposite to the second leg presser, and the limiting cylinder is connected to the fixing plate through the pin holes.

[0025] Furthermore, the leg press bar is provided with two sets of different heights.

[0026] Furthermore, one of the leg press bars is provided with two sets of the protective structures.

[0027] Furthermore, the inner side of the curved pad has a sponge layer structure.

[0028] The beneficial effects of this utility model are as follows: The easily adjustable leg press device provided by this utility model can provide excellent flexible support for the ankles during leg warm-up exercises. Through a carefully designed protective structure, the mounting ring on the leg press bar is connected to the bearing block. Under normal conditions, the second limiting rod is squeezed by the first limiting rod, which firmly engages the limiting gear in the inner gear ring of the bearing block, effectively preventing relative rotation between the rotating seat and the bearing block. When the legs are placed on the curved pad, the flexible support of its sponge layer and damping components can well adapt to the shape of the ankle. At the same time, the transmitted pressure pushes the telescopic rod to move inward into the rotating seat, and then the buffer spring of the spring rod causes the first limiting rod to retract, releasing the limiting effect of the second limiting rod, allowing the rotating seat and the bearing block to rotate relative to each other. This design ensures that the curved pad can rotate freely in the front and back directions with the ankle during warm-up, greatly reducing the wear and tear on the ankle, and truly achieving flexible protection and comfortable support for the ankle. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an easily adjustable leg presser according to one embodiment of the present invention.

[0030] Figure 2 This is a cross-sectional view of an adjustable leg presser according to one embodiment of the present invention;

[0031] Figure 3 This is a cross-sectional view of the protective structure according to one embodiment of the present invention;

[0032] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0033] Figure 5 This is a schematic diagram of the connection between the internal gear ring and the limiting gear according to one embodiment of the present invention;

[0034] Figure 6 This is a side view of an adjustable leg press device according to one embodiment of the present invention.

[0035] In the diagram: 1. Leg press frame; 2. Leg press rod; 3. Height adjustment assembly; 301. Eccentric wheel; 302. Connecting rod; 303. Guide screw; 304. Fixing plate; 305. Threaded sleeve block; 306. Limiting cylinder; 4. Protective structure; 401. Mounting collar; 402. Rotating seat; 403. Damping component; 4031. Fixing cylinder; 4032. Telescopic rod; 4033. Damping spring; 404. Curved pad; 405. Spring rod; 406. First limiting rod; 407. Internal gear ring; 408. Second limiting rod; 409. Limiting gear; 5. Bearing block; 6. Hollow shaft; 7. Hinge block. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0037] Example 1

[0038] Figure 1 This is a schematic diagram of the overall structure of an easily adjustable leg presser according to one embodiment of the present invention. Figure 2 This is a cross-sectional view of an adjustable leg presser according to one embodiment of the present invention; Figure 3 This is a cross-sectional view of the protective structure according to one embodiment of the present invention. Figure 1-3 As shown, according to one embodiment of the present invention, an easily adjustable leg presser includes a leg press frame 1 and a leg press rod 2. Both ends of the leg press rod 2 are respectively connected to a leg press frame 1, and the height of the leg press rod 2 is adjustable.

[0039] The leg press bar 2 is externally equipped with a protective structure 4 and a bearing block 5;

[0040] The protective structure 4 includes a mounting collar 401, a rotating seat 402, a damping element 403, and a curved pad 404. The mounting collar 401 is fixed to the outside of the leg press rod 2, the bearing block 5 is fixed to the top of the mounting collar 401, the rotating seat 402 is rotatably connected between the two bearing blocks 5, and the bottom of the curved pad 404 is connected to the rotating seat 402 through the damping element 403.

[0041] The rotating seat 402 has a hollow structure inside, and the damping element 403 retracts into the rotating seat 402 under the action of external force; the top of the curved pad 404 is arc-shaped, which is used to provide comfortable support for the body.

[0042] In this embodiment, the easily adjustable leg presser includes a leg press frame 1, a leg press rod 2 slidably connected to the inner side of the leg press frame 1, and a protective structure 4 provided on the outside of the leg press rod 2. The protective structure 4 includes a mounting collar 401, a rotating seat 402, a damping element 403, and a curved pad 404. The mounting collar 401 is fixed to the outside of the leg press rod 2. The rotating seat 402 is rotatably connected to the top of the mounting collar 401. The damping element 403 is fixedly connected to the top of the rotating seat 402. The curved pad 404 is fixedly connected to the top of the damping element 403. Two bearing blocks 5 are fixedly connected to the top of the mounting collar 401. Hollow shafts 6 are fixedly connected to both the left and right sides of the rotating seat 402. The opposite ends of the two hollow shafts 6 are rotatably connected to the inner sides of the two bearing blocks 5 respectively. The inner left and inner right walls of the rotating seat 402 are provided with second through grooves. The two second through grooves are respectively connected to the interior of the two hollow shafts 6.

[0043] The adjustable leg press device includes a leg press frame 1 and a leg press bar 2. The two ends of the leg press bar 2 are slidably connected to the leg press frame 1, and the height of the leg press bar 2 is adjustable. A protective structure 4 is cleverly designed on the outside of the leg press bar 2. This structure consists of a mounting collar 401, a rotating seat 402, a damping element 403, and a curved pad 404. The mounting collar 401 is fastened to the leg press bar 2, and its top is connected to the rotating seat 402 via a bearing block 5. The rotating seat 402 is hollow inside for easy installation and rotation. The damping element 403 is installed on top of the rotating seat 402 and connected to the curved pad 404, which is designed to provide comfortable body support. Under external force, the damping element 403 can retract into the rotating seat 402, achieving flexible adjustment. Meanwhile, the left and right sides of the rotating seat 402 are rotatably connected to the bearing block 5 through the hollow shaft 6, and the second through groove on the inner wall of the rotating seat 402 is connected to the inside of the hollow shaft 6. This design not only ensures the stability of the structure, but also allows the rotating seat 402 to rotate freely within a certain range. At the same time, the characteristics of the damping component 403 are used to maintain a stable support force, providing users with a safer and more comfortable leg pressing experience.

[0044] This invention achieves flexible adjustment and comfortable support for the leg press device through a height-adjustable leg press bar and a cleverly designed protective structure. The rotating seat, damping components, and curved surface pad design in the protective structure not only ensure the stability and free rotation of the structure but also provide stable and comfortable support, bringing users a safer and more comfortable leg press experience.

[0045] Figure 4 for Figure 3 A schematic diagram of the structure at center A; Figure 5 This is a schematic diagram illustrating the connection between the internal gear ring and the limiting gear according to one embodiment of the present invention. Figure 4-5As shown, according to one embodiment of the present invention, the protective structure 4 further includes: a spring rod 405, a first limiting rod 406, an internal gear ring 407, a second limiting rod 408, and a limiting gear 409.

[0046] Spring rod 405, first limiting rod 406 and second limiting rod 408 are all fixed inside rotating seat 402;

[0047] A spring rod 405 is fixed inside the rotating seat 402. The spring rod 405 is a structure in which a buffer spring is sleeved at each end of the lead screw. Two hinge blocks 7 are slidably sleeved on the middle of the lead screw of the spring rod 405, and the opposite ends of the two hinge blocks 7 are respectively connected to one end of the buffer spring. Each hinge block 7 has a first support rod hinged at the top and a second support rod hinged at the bottom. The bottom of the damping element 403 is hinged to the first support rod, and the bottom of the second support rod is hinged to the first limiting rod 406.

[0048] The internal gear ring 407 is fixed inside the bearing block 5, and the bearing block 5 is rotatably connected to the rotating seat 402 through the hollow shaft 6.

[0049] The longitudinal first limiting rod 406 is sleeved and connected to the transverse second limiting rod 408; the end of the second limiting rod 408 away from the first limiting rod 406 is sleeved with a compression spring, and the second limiting rod 408 passes through the hollow shaft rod 6 and is connected to the limiting gear 409; the end of the compression spring sleeved away from the first limiting rod 406 is connected to the inner wall of the rotating seat 402;

[0050] The internal gear ring 407 and the limiting gear 409 are sized to match. When the first limiting rod 406 applies a downward force to the second limiting rod 408, the second limiting rod 408 pushes the limiting gear 409 to mesh with the internal gear ring 407.

[0051] Preferably, the damping component 403 includes: a fixed cylinder 4031, a telescopic rod 4032, and a damping spring 4033;

[0052] The fixed cylinder 4031 is fixed to the top of the rotating seat 402. A telescopic rod 4032 is inserted into the inner side of the fixed cylinder 4031. The top of the telescopic rod 4032 is connected to the curved pad 404, and the bottom passes through the rotating seat 402 and is connected to the first support rod. A damping spring 4033 is sleeved on the outside of the telescopic rod 4032. The bottom of the damping spring 4033 is fixed to the outside of the fixed cylinder 4031. In this embodiment, the protective structure 4 includes a spring rod 405, a first limiting rod 406, an internal gear ring 407, a second limiting rod 408, and a limiting gear 409. The inner top wall of the rotating seat 402 is fixedly connected to the spring rod 405. A hinge block 7 is provided on the outside of the spring rod 405. The hinge block 7 is hinged to the first limiting rod 406 through a second support rod located at the bottom. The top of the mounting collar 401 is provided with an internal gear ring 407. The inside of the rotating seat 402 is movably connected to the second limiting rod 408. The outside of the second limiting rod 408 is fixedly connected to the limiting gear 409. The top of the rotating seat 402 has two through slots of type I. There are two spring rods 405, both of which are buffer springs connected to a lead screw. Each lead screw has two hinge blocks 7 slidably connected to its exterior. The tops of the four hinge blocks 7 are hinged to a support rod of type I. The bottoms of two telescopic rods 4032 pass through the through slots of type I and are hinged to the tops of the four support rods of type I respectively. The bottoms of the four hinge blocks are hinged to a support rod of type II. There are two first limiting rods 406, and the bottoms of the four support rods of type II are hinged to the tops of the two first limiting rods 406 respectively. The top of the mounting collar 401 is fixedly connected to two bearing blocks 5. The left and right sides of the rotating seat 402...

[0053] Hollow shafts 6 are fixedly connected to each other. The opposite ends of the two hollow shafts 6 are rotatably connected to the inner sides of the two bearing blocks 5 respectively. The inner left and inner right walls of the rotating seat 402 are provided with No. 2 through slots. The two No. 2 through slots are respectively connected to the interior of the two hollow shafts 6. There are two internal gear rings 407. The two internal gear rings 407 are respectively fixedly connected to the interior of the two bearing blocks 5. There are two second limiting rods 408 and two limiting gears 409. Compression springs are sleeved on the outside of the two second limiting rods 408. One end of the two compression springs is respectively fixedly connected to the inner left and inner right walls of the rotating seat 402. The two limiting gears 409 pass through the two No. 2 through slots and mesh with the inner sides of the two internal gear rings 407 respectively.

[0054] The protective structure 4 further includes a spring rod 405, a first limiting rod 406, an internal gear ring 407, a second limiting rod 408, and a limiting gear 409. Specifically, the spring rod 405 is fixed to the inner top wall of the rotating seat 402 and is designed as a structure in which buffer springs are sleeved at both ends of a lead screw. Two hinge blocks 7 are slidably sleeved on the middle of the lead screw of the spring rod 405. The hinge blocks 7 are connected to the bottom of the telescopic rod 4032 of the damping element 403 through a first support rod, and the hinge blocks 7 are hinged to the top of the first limiting rod 406 through a second support rod. This design allows the damping element 403 to achieve smoother adjustment under external force through the linkage of the spring rod 405 and the hinge blocks 7. At the same time, the internal gear ring 407 is fixed inside the bearing block 5 and is sized to match the limiting gear 409, which is rotatably connected to the rotating seat 402 through a hollow shaft rod 6. When the telescopic rod 4032 applies pressure to the first support rod and moves downward, the two hinge blocks 7 move away from each other due to the fixed vertical position of the spring rod 405, causing the second support rod to move upward. This causes the first limiting rod 406 to move away from the second limiting rod 408. Under the action of the compression spring, the second limiting rod 408 drives the limiting gear 409 to disengage from the internal gear ring 407, enabling the flexible movement of the curved pad 404. When the external pressure is removed, the first support rod moves upward, further driving the second support rod downward, locking the first limiting rod 406 and the second limiting rod 408 together. This ensures that the limiting gear 409 and the internal gear ring 407 are locked together when no external force is applied, reducing equipment wear. This design not only enhances the stability of the leg presser but also provides users with a more flexible user experience. This utility model achieves smoother adjustment of the damping components and locking and unlocking functions of the rotating seat at a certain angle, enhancing the stability of the leg presser while providing a more flexible user experience and reducing equipment wear.

[0055] According to one embodiment of the present invention, multiple sets of damping elements 403 are uniformly arranged at the bottom of each curved pad 404.

[0056] Preferably, the leg press bar 2 is provided with two sets of different heights.

[0057] Preferably, a leg press bar 2 is provided with two sets of protective structures 4.

[0058] Preferably, the inner side of the curved pad 404 has a sponge layer structure.

[0059] In this embodiment, six sets of damping elements 403 are evenly installed on the bottom of each curved pad 404. These damping elements 403 are connected to the curved pad 404 and the hinge block 7 inside the rotating seat 402 via telescopic rods 4032, providing stable support and cushioning for the curved pad 404. Meanwhile, the leg press bar 2 is configured with two sets of different heights to accommodate different heights or usage needs. Two sets of protective structures 4 are configured on each leg press bar 2, allowing multiple people to use the leg press device simultaneously. Furthermore, the inner side of the curved pad 404 is specially designed with a sponge layer structure, further enhancing user comfort.

[0060] This invention provides users with a stable and comfortable leg-pressing experience, meeting the needs of different users, while enhancing the safety and durability of the equipment.

[0061] According to one embodiment of the present invention, the leg presser further includes: a height adjustment component 3;

[0062] The height adjustment assembly 3 includes an eccentric wheel 301, a connecting rod 302, and a guide screw 303;

[0063] The leg press frame 1 includes a first leg press frame and a second leg press frame; two sets of eccentric wheels 301 and a connecting rod 302 are disposed inside the first leg press frame; the eccentric wheel 301 is rotatably connected to the connecting rod 302, and the side of the eccentric wheel 301 away from the connecting rod 302 is connected to a pulley, the two pulleys are connected by a belt, and one of the pulleys is rotatably connected to a handle disposed outside the first leg press frame;

[0064] The guide screw 303 is longitudinally arranged inside the second leg presser; one end of the leg presser 2 is connected to the connecting rod 302, and the other end is slidably connected to the guide screw 303 through the lifting ring.

[0065] In this embodiment, the leg press frame 1 is internally equipped with a height adjustment component 3, which includes an eccentric wheel 301, a connecting rod 302, and a guide screw 303. The eccentric wheel 301 is rotatably connected inside the leg press frame 1, and the connecting rod 302 is rotatably connected outside the eccentric wheel 301. The guide screw 303 is fixedly connected inside the leg press frame 1. The leg press frame 1 is a vertical column structure with two eccentric wheels. There are two eccentric wheels 301, and each is rotatably connected to the inner left wall of one of the vertical columns (leg press frame 1). A handle is rotatably connected to the left side of one of the vertical columns. A pulley is fixedly connected to the left end of each of the two eccentric wheels 301, and the right end of the handle is fixedly connected to the left end of one of the pulleys.

[0066] The height adjustment component 3 of the leg press device cleverly integrates an eccentric wheel 301, a connecting rod 302, and a guide screw 303. Specifically, two eccentric wheels 301 are rotatably connected to the inner sides of the first leg press frame and are connected to an external handle via pulleys and belts, enabling the synchronous rotation of the two eccentric wheels 301 by rotating the handle. The rotation of the eccentric wheels 301 further drives the movement of the connecting rod 302, the other end of which is connected to one end of the leg press bar 2, thus realizing the height adjustment of the leg press bar 2. At the same time, the other end of the leg press bar 2 is slidably connected to the guide screw 303 longitudinally arranged inside the second leg press frame through a lifting ring, ensuring the stability and linear motion of the leg press bar 2 during the lifting process. This positional relationship and connection design allows users to easily adjust the height of the leg press bar 2 by simply rotating the handle, making the operation simple and the adjustment precise.

[0067] This invention provides users with a convenient and precise height adjustment function for the leg press bar, effectively improving the practicality and user experience of the leg press device, while also showcasing the ingenuity and craftsmanship of the product design.

[0068] Figure 6 This is a side view of an adjustable leg press device according to one embodiment of the present invention. Figure 2 and Figure 6 As shown, according to one embodiment of the present invention, the height adjustment component 3 further includes: a fixing plate 304, a threaded sleeve 305, and a limiting cylinder 306;

[0069] The fixing plate 304 is located on the side of the second leg presser away from the first leg presser. The lifting ring is provided with a threaded sleeve 305 on the side near the fixing plate 304. The limiting cylinder 306 is inserted into the fixing plate 304 and the front end of the limiting cylinder 306 is screwed to the threaded sleeve 305. The position of the limiting cylinder 306 on the fixing plate 304 is adjustable.

[0070] Preferably, the fixing plate 304 has multiple pin holes arranged longitudinally at equal intervals on the side opposite to the second presser leg frame, and the limiting cylinder 306 is connected to the fixing plate 304 through the pin holes.

[0071] In this embodiment, the height adjustment component 3 further includes a fixing plate 304, a threaded sleeve 305, and a limiting cylinder 306. A first groove is provided on the right side of one of the leg pressers 1, and the right end of the connecting rod 302 is rotatably connected to the left ends of the two leg pressers 2 via the first groove. Second grooves are provided on both the left and right sides of one of the leg pressers 1, and the right ends of the two leg pressers 2 are fixedly connected to the left sides of the two lifting rings via one of the second grooves. The left side of the fixing plate 304 is connected through the other second groove. A threaded sleeve 305 is slidably connected to the inner left wall of the fixing plate 304, and a limiting cylinder 306 is inserted into the right side of the fixing plate 304. There are two threaded sleeves 305, which are fixedly connected to the right sides of the two lifting rings via a second groove. A number of pin holes are equidistantly provided on the right side of the fixing plate 304, and a threaded ring adapted to the inner side of the threaded sleeve 305 is provided at the left end of the limiting cylinder 306.

[0072] The height adjustment assembly 3 further includes a fixed plate 304, a threaded sleeve 305, and a limiting cylinder 306. The fixed plate 304 is located on the side of the second leg press frame opposite to the first leg press frame. The threaded sleeve 305 is located on the side of the lifting ring near the fixed plate 304 and is screwed to the front end of the limiting cylinder 306. The limiting cylinder 306 can be inserted into and adjusted in position on the fixed plate 304, and is connected to the fixed plate 304 through multiple longitudinally equidistant pin holes. The leg press rod 2 is connected to the eccentric wheel 301 through a connecting rod 302, and the other end is slidably connected to the guide screw 303 through the lifting ring. Two threaded sleeves 305 are fixedly connected to the right side of the lifting ring, and they are respectively connected to the fixed plate 304 through a second sliding groove. This design allows the user to adjust the height of the leg press rod 2 and then lock it by adjusting the position of the limiting cylinder 306 on the fixed plate 304, thereby increasing the stability and safety of the leg press device.

[0073] This utility model's height adjustment component not only realizes the height adjustment function of the leg press bar, but also, by adding a fixing plate, a threaded sleeve, and a limiting cylinder, allows users to lock the height of the leg press bar after adjusting the height by using the limiting cylinder to cooperate with the pin hole on the fixing plate. This significantly enhances the stability and safety of the leg press device and improves the user experience.

[0074] Example 2

[0075] like Figure 1-6 As shown, according to one embodiment of the present invention, an easily adjustable leg presser includes a leg press frame 1, a leg press rod 2 slidably connected to the inner side of the leg press frame 1, the leg press rod 2 being the leg resting part, a height adjustment component 3 being provided inside the leg press frame 1, and a protective structure 4 being provided outside the leg press rod 2.

[0076] The height adjustment assembly 3 includes an eccentric wheel 301, a connecting rod 302, a guide screw 303, a fixed plate 304, a threaded sleeve 305, and a limiting cylinder 306. The eccentric wheel 301 is rotatably connected inside the leg press frame 1, and the connecting rod 302 is rotatably connected outside the eccentric wheel 301. The eccentric wheel 301 drives the connecting rod 302 to rotate eccentrically. The guide screw 303 is fixedly connected inside the leg press frame 1. The fixed plate 304 is fixedly connected to the right side of the leg press frame 1. The threaded sleeve 305 is slidably connected to the inner left wall of the fixed plate 304. The limiting cylinder 306 is inserted into the right side of the fixed plate 304, and the limiting cylinder 306 limits the upper and lower positions of the threaded sleeve 305.

[0077] The protective structure 4 includes a mounting collar 401, a rotating seat 402, a damping element 403, a curved pad 404, a spring rod 405, a first limiting rod 406, an internal gear ring 407, a second limiting rod 408, and a limiting gear 409. The mounting collar 401 is fixed externally to the leg press rod 2. The rotating seat 402 is rotatably connected to the top of the mounting collar 401. The rotating seat 402 rotates on top of the mounting collar 401 via a bearing block 5. The damping element 403 is fixedly connected to the top of the rotating seat 402, and the curved pad 404 is fixedly connected to the top of the damping element 403. The curved pad 404 and damping element 403 provide flexible support for the legs. A spring rod 405 is fixedly connected to the inner top wall of the rotating seat 402. A first limiting rod 406 is hinged to the outside of the spring rod 405. The first limiting rod 406 clamps and limits the second limiting rod 408. An internal gear ring 407 is provided on the top of the mounting collar 401. The second limiting rod 408 is movably connected inside the rotating seat 402. A limiting gear 409 is fixedly connected to the outside of the second limiting rod 408. The limiting gear 409 enters the internal gear ring 407 to limit the rotation, preventing the rotating seat 402 from rotating.

[0078] like Figure 2 As shown, by rotating the handle, the two eccentric wheels 301 rotate synchronously and in the same direction using the two belt pulleys connected by the transmission. The eccentric wheels 301 drive the connecting rod 302 to rotate eccentrically, so that the leg press rod 2 can slide up and down along the guide screw 303 to adjust the height position of the leg press rod 2.

[0079] like Figure 2 As shown, when the leg press bar 2 moves up and down with the lifting ring, the threaded sleeve block 305 will move synchronously. When the leg press bar 2 is adjusted to a suitable position, the limiting sleeve 306 is inserted through the pin hole and connected to the inner thread of the threaded sleeve block 305 to limit and fix the threaded sleeve block 305, preventing the leg press bar 2 from shifting due to leg pressure, which could lead to injury to the human body.

[0080] The inner side of the curved pad 404 is a sponge layer structure. Together with the damping spring 4033 of the damping component 403, it can provide flexible support for the ankle area and reduce the wear and tear caused by the ankle skin coming into contact with hard objects. When the telescopic rod 4032 located above the first through slot is pressed, it moves into the rotating seat 402. At this time, the telescopic rod 4032 pushes the first support rod that is hinged below. The first support rod pushes the hinge block 7 to move to one side of the buffer spring. The two hinge blocks 7 move away from each other in the horizontal direction, while the vertical height remains unchanged. Thus, the hinge block 7 drives the second support rod to tilt and rise, which in turn drives the first limit rod 406 to rise and retract.

[0081] Since the bottom of the first limiting rod 406 and the right end of the second limiting rod 408 are both inclined structures, when the first limiting rod 406 rises, the right end of the second limiting rod 408 loses its limiting effect. In addition, a compression spring is sleeved on the outside of the second limiting rod 408. One end of the compression spring is connected to the inner wall of the rotating seat 402 and extends and rebounds, causing the second limiting rod 408 to drive the limiting gear 409 to move into the rotating seat 402.

[0082] The limiting gear 409 disengages from the internal gear ring 407, allowing the rotating seat 402 to maintain relative rotation with the bearing block 5 via the hollow shaft 6. This allows the curved pad 404 to rotate freely in the front-back direction with the ankle during warm-up exercises, reducing the possibility of ankle wear. Under normal circumstances, due to the squeezing and limiting effect of the first limiting rod 406, the limiting gear 409 enters the internal gear ring 407 and engages with it, fixing the rotating seat 402 and preventing it from rotating. This reduces the problem of excessive wear of the hollow shaft 6 when idle.

[0083] In summary, this easily adjustable leg press device allows the user's height to be adjusted by rotating the eccentric wheel 301, causing the connecting rod 302 to rotate eccentrically and move the leg press rod 2 up and down along the guide screw 303. When the leg press rod 2 is in the appropriate position, the threaded sleeve 305, connected to the limiting sleeve 306, limits the leg press rod 2, preventing displacement during warm-up and potential leg injury. The easily adjustable leg press device also features a fixed mounting ring 401 fitted onto the leg press rod 2. A bearing block 5 is connected to the top of the mounting ring 401. Under normal conditions, the right end of the second limiting rod 408 is compressed by the first limiting rod 406, causing the limiting gear 409 to extend into the bearing block 5 and engage with the inner side of the internal gear ring 407. At this time, the rotating seat 402 cannot be held in place by the hollow shaft 6 and the bearing block 5. With relative rotation, when the leg is placed in the curved pad 404, the sponge layer of the curved pad 404 and the damping element 403 provide flexible support, and at the same time, pressure is transmitted to the damping element 403, pushing the telescopic rod 4032 to move into the rotating seat 402. The first limiting rod 406 retracts upward by squeezing the buffer spring of the spring rod 405 through the hinge block 7. After the second limiting rod 408 loses its limiting effect, it moves inward to the rotating seat 402, disengaging the limiting gear 409 from the internal gear ring 407. At this time, the rotating seat 402 can maintain relative rotation with the bearing block 5, thereby ensuring that the curved pad 404 can rotate freely in the front and back directions with the ankle during warm-up exercises, reducing the degree of ankle wear and achieving a flexible protection effect. This solves the problem that the fixed foot arm of the leg press trainer in the prior art lacks protective components, which easily causes skin abrasion and swelling in the ankle area.

[0084] This invention achieves height adjustment and stable positioning of the leg press bar through a height adjustment component. At the same time, it provides flexible support by using curved pads and damping components in the protective structure. Through the rotatable rotating seat design, the curved pads can rotate freely in the front and back directions with the ankle, effectively reducing ankle wear and achieving a good flexible protection effect.

[0085] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0086] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An adjustable leg press device, comprising a leg press frame (1) and a leg press rod (2), wherein both ends of the leg press rod (2) are respectively connected to one of the leg press frames (1), and the height of the leg press rod (2) is adjustable; characterized in that: The leg press bar (2) is provided with a protective structure (4) and a bearing block (5) on its exterior. The protective structure (4) includes a mounting collar (401), a rotating seat (402), a damping element (403), and a curved pad (404); the mounting collar (401) is fixed to the outside of the leg press rod (2), the bearing block (5) is fixed to the top of the mounting collar (401), the rotating seat (402) is rotatably connected between the two bearing blocks (5), and the bottom of the curved pad (404) is connected to the rotating seat (402) through the damping element (403); The rotating seat (402) has a hollow structure inside, and the damping element (403) retracts into the rotating seat (402) under the action of external force; the top of the curved pad (404) is arc-shaped and is used to provide comfortable support for the body.

2. The easily adjustable leg presser according to claim 1, characterized in that, The protective structure (4) further includes: a spring rod (405), a first limiting rod (406), an internal gear ring (407), a second limiting rod (408), and a limiting gear (409). The spring rod (405), the first limiting rod (406) and the second limiting rod (408) are all fixed inside the rotating seat (402); The rotating seat (402) has a spring rod (405) fixed inside. The spring rod (405) is a structure in which a buffer spring is sleeved at each end of the lead screw. Two hinge blocks (7) are slidably sleeved on the middle part of the lead screw of the spring rod (405), and the two hinge blocks (7) are respectively connected to one end of the buffer spring at opposite ends. Each hinge block (7) has a first support rod hinged at the top and a second support rod hinged at the bottom. The bottom of the damping element (403) is hinged to the first support rod, and the bottom of the second support rod is hinged to the first limiting rod (406). The internal gear ring (407) is fixed inside the bearing block (5), and the bearing block (5) is rotatably connected to the rotating seat (402) through the hollow shaft (6); The first longitudinal limiting rod (406) is sleeved and connected to the second transverse limiting rod (408); a compression spring is sleeved on the end of the second limiting rod (408) away from the first limiting rod (406), and the second limiting rod (408) passes through the hollow shaft (6) and is connected to the limiting gear (409); the end of the sleeved compression spring away from the first limiting rod (406) is connected to the inner wall of the rotating seat (402); The internal gear ring (407) is sized to match the limiting gear (409). When the first limiting rod (406) applies a downward force to the second limiting rod (408), the second limiting rod (408) pushes the limiting gear (409) to mesh with the internal gear ring (407).

3. The easily adjustable leg presser according to claim 2, characterized in that, The damping component (403) includes: a fixed cylinder (4031), a telescopic rod (4032), and a damping spring (4033); The fixed cylinder (4031) is fixed to the top of the rotating seat (402). A telescopic rod (4032) is inserted into the inner side of the fixed cylinder (4031). The top of the telescopic rod (4032) is connected to the curved pad (404), and the bottom passes through the rotating seat (402) and is connected to the first support rod. The damping spring (4033) is sleeved on the outside of the telescopic rod (4032). The bottom of the damping spring (4033) is sleeved and fixed to the outside of the fixed cylinder (4031).

4. The easily adjustable leg presser according to claim 3, characterized in that: Multiple sets of damping elements (403) are uniformly arranged at the bottom of each of the curved pads (404).

5. The easily adjustable leg presser according to claim 2, characterized in that, The leg presser also includes: a height adjustment component (3); The height adjustment assembly (3) includes an eccentric wheel (301), a connecting rod (302), and a guide screw (303). The leg press frame (1) includes a first leg press frame and a second leg press frame; two sets of eccentric wheels (301) and the connecting rod (302) are disposed inside the first leg press frame; the eccentric wheel (301) is rotatably connected to the connecting rod (302), the side of the eccentric wheel (301) away from the connecting rod (302) is connected to a pulley, the two pulleys are connected by a belt, and one of the pulleys is rotatably connected to a handle disposed outside the first leg press frame; The guide screw (303) is longitudinally arranged inside the second leg presser; one end of the leg presser (2) is connected to the connecting rod (302), and the other end is slidably connected to the guide screw (303) through a lifting ring.

6. The easily adjustable leg presser according to claim 5, characterized in that, The height adjustment assembly (3) further includes: a fixing plate (304), a threaded sleeve (305), and a limiting sleeve (306); The fixing plate (304) is disposed on the side of the second leg presser away from the first leg presser. The lifting ring is provided with the threaded sleeve (305) on the side near the fixing plate (304). The limiting cylinder (306) is inserted into the fixing plate (304) and the front end of the limiting cylinder (306) is screwed to the threaded sleeve (305). The position of the limiting cylinder (306) on the fixing plate (304) is adjustable.

7. The easily adjustable leg presser according to claim 6, characterized in that: The fixing plate (304) is provided with a plurality of pin holes at equal longitudinal intervals on the side opposite to the second leg presser, and the limiting cylinder (306) is connected to the fixing plate (304) through the pin holes.

8. The easily adjustable leg presser according to claim 1, characterized in that: The leg press bar (2) is provided with two sets of different heights.

9. The easily adjustable leg presser according to claim 1, characterized in that: Two sets of protective structures (4) are provided on one of the leg press bars (2).

10. The easily adjustable leg presser according to claim 1, characterized in that: The inner side of the curved pad (404) is a sponge layer structure.

Images