Strength type leg trainer

Abstract

The utility model discloses a strength type leg trainer which comprises a main frame, the bottom of the main frame is fixedly arranged on the ground, thrust frames are arranged on the two sides of the top of the main frame, adjustable counterweight units are arranged on the sides of the thrust frames, leg training units are arranged at the head ends of the thrust frames, the tail ends of the thrust frames are hinged to the top of the main frame, and L-shaped supporting rods are arranged below the tail ends of the thrust frames. A seat plate and a backrest plate are arranged at the top of the L-shaped supporting rod; the adjustable counterweight unit comprises a U-shaped counterweight rod which is fixedly arranged on the side of the thrust frame and is perpendicular to the thrust frame, sliding rods are fixedly arranged on rod bodies at the two ends of the U-shaped counterweight rod, and a plurality of counterweight sheets are arranged on the sliding rods in a sliding mode and are axially limited through limiting assemblies and the sliding rods. The balance weight of the leg trainer can be adjusted by adjusting the position of the balance weight sheet on the sliding rod; the position of the weight stack relative to the sliding rod is limited through the limiting assembly, the situation that the weight is changed due to displacement in the using process is prevented, meanwhile, the anti-theft effect can be achieved through the U-shaped weight lever, and the anti-theft device is suitable for the technical field of sports equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of sports equipment, and specifically relates to a strength type leg training device. Background Art

[0002] Leg trainers can be used for thigh strength training. Exercising lower limb muscles with leg trainers can improve body balance, increase explosive power and stability. In traditional technology, most outdoor leg trainers have fixed weights, and their weights cannot be adjusted, which cannot meet the needs of different groups. Utility Model Content

[0003] The utility model provides a strength type leg trainer, which is used to solve the problem that most of the outdoor leg trainers in the traditional technology have fixed weights and the weights cannot be adjusted, thus failing to meet the use needs of different groups.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A strength-type leg training device comprises a main frame, characterized in that: the bottom of the main frame is fixed to the ground, thrust frames are arranged on both sides of the top, adjustable counterweight units are arranged on the sides of the thrust frames, a leg training unit is arranged at the head end of the thrust frame, the tail end of the thrust frame is hinged to the top of the main frame, an L-shaped support rod is fixed below the tail end of the thrust frame, the L-shaped support rod is fixedly connected to the main frame through a crossbeam, and a seat plate and a backrest plate are arranged on the top of the L-shaped support rod;

[0006] The leg training unit comprises a linkage rod and a leg hook frame, the top end of the linkage rod is hinged to the head end of the thrust frame through a pin, the bottom end of the linkage rod is hinged to the middle part of the leg hook frame through a pin, the tail end of the leg hook frame is hinged to the middle part of the main frame through a U-shaped seat, and the head end of the leg hook frame is covered with a protective cover;

[0007] The adjustable counterweight unit includes a U-shaped counterweight rod fixedly arranged on the side of the thrust frame and perpendicular to it, a sliding rod is fixedly arranged on the rod body at both ends of the U-shaped counterweight rod, and a plurality of counterweight plates are slidably arranged on the sliding rod and axially limited by a limit assembly and the sliding rod.

[0008] Furthermore, the limiting assembly includes a limiting protrusion and an annular ring, and several limiting protrusions are arranged perpendicular to the axis of the sliding rod and are arranged at intervals along its axial direction. An annular ring is fixed on the two end surfaces of each counterweight plate, and a limiting groove with an annular structure that is adapted to the limiting protrusion is formed between the annular rings on the two end surfaces of each counterweight plate.

[0009] Furthermore, the annular ring is provided with a groove matched with the limiting protrusion, and the grooves of the two annular rings on the same counterweight plate are symmetrically arranged relative to the counterweight plate.

[0010] Furthermore, the thrust frame includes an upper arm, a forearm and a connecting arm, the upper arm and the head end of the forearm are fixedly connected, the tail end of the forearm is fixedly connected to the head end of the connecting arm, and is hinged to the top end of the connecting rod through a pin shaft, and the tail end of the upper arm and the tail end of the connecting arm are rotatably connected to the hinge seat at the top end of the main frame through a limiting main shaft.

[0011] Furthermore, the main frame includes two columns, which are fixedly connected by a crossbeam, a reference rod is fixedly arranged parallel to the lower part of the crossbeam, both ends of the reference rod are fixedly connected to the two columns, a hinged seat is fixedly arranged at the top of the column, and a U-shaped seat is fixedly arranged in the middle of the column.

[0012] Furthermore, the rod bodies at both ends of the U-shaped counterweight rod pass through the limiting shaft and are vertically fixedly connected to the upper arm of the thrust frame through pins, and the limiting shaft is vertically fixedly connected to the upper arm of the thrust frame.

[0013] As the utility model adopts the above structure, compared with the prior art, the technical progress achieved is:

[0014] When in use, the trainee sits on the seat board with his back close to the backrest board, holds the armrests with both hands, hooks his feet on the position of the protective cover, and repeatedly lifts and lowers the hooked leg frame slowly. The hooked leg frame pushes the thrust frame to swing up and down with the limiting spindle as the center through the connecting rod, and the counterweight is adjustable by adjusting the position of the counterweight plate on the sliding bar; the position of the counterweight plate relative to the sliding bar is limited by the limiting component to prevent the counterweight plate from being displaced relative to the sliding bar to change the counterweight during use; at the same time, a number of counterweight plates are limited to the thrust frame by the U-shaped counterweight rod and cannot be separated from the thrust frame. While achieving adjustable counterweight, it can also play an anti-theft role when used for outdoor sports equipment, and is suitable for the field of sports equipment technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached picture:

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of an adjustable counterweight unit in an embodiment of the utility model;

[0019] Figure 3 It is a structural schematic diagram of a U-shaped counterweight rod in an embodiment of the utility model;

[0020] Figure 4 It is a cross-sectional view of a weight plate in an embodiment of the utility model;

[0021] Figure 5 It is an assembly diagram of the counterweight plate and the U-shaped counterweight rod in the embodiment of the utility model.

[0022] Annotated parts:

[0023] 01-adjustable counterweight unit, 11-U-shaped counterweight rod, 12-sliding rod, 121-sliding rod body, 122-limiting protrusion, 123-limiting shaft, 13-counterweight plate, 131-counterweight plate body, 132-annular ring, 133-groove, 134-limiting groove;

[0024] 02-main frame, 21-reference rod, 22-limit spindle, 23-armrest, 03-crossbeam, 04-L-shaped support rod, 05-seat plate, 06-backrest plate, 07-leg training unit, 71-linking rod, 72-leg hook frame, 73-protective cover, 08-forearm, 09-upper arm, 10-connecting arm, 00-pin. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] The utility model discloses a strength type leg training device, such as Figure 1 As shown, it includes a main frame 02, the bottom of which is fixed to the ground, and thrust frames are provided on both sides of the top. An adjustable counterweight unit 01 is provided on the side of the thrust frame, and the adjustable counterweight unit 01 is located on the outside of the thrust frame and in the middle of the top of the thrust frame. A leg training unit is provided at the head end of the thrust frame, and the tail end of the thrust frame is hinged to the top of the main frame 02, and an L-shaped support rod 04 is fixed below the tail end of the thrust frame, and the L-shaped support rod 04 is fixedly connected to the main frame 02 through a crossbeam 03, and a seat plate 05 and a backrest plate 06 are provided on the top of the L-shaped support rod 04; the L-shaped support rod 04 is inverted, and the L-shaped support rod 04 and the seat plate 05 are provided on one side of the tail end of the thrust frame, and its bottom is buried in the ground, which can support the main frame 02 and improve the overall stability of the equipment, and the top is fixedly connected to the crossbeam 03. When in use, the trainee sits on the seat plate 05 with his back close to the backrest plate 06, holds the armrests 23 with both hands, and repeatedly lifts and lowers the hook leg frame slowly. The hook leg frame pushes the thrust frame to swing up and down with the limit spindle 22 as the center through the connecting rod.

[0027] As a specific implementation method, Figure 2 As shown, the adjustable counterweight unit 01 includes a U-shaped counterweight rod 11 fixedly arranged on the side of the thrust frame and perpendicular to it, a sliding rod 12 is fixedly arranged on the rod body at both ends of the U-shaped counterweight rod 11, and a plurality of counterweight plates 13 are slidably arranged on the sliding rod 12 and axially limited by the sliding rod 12 through a limit assembly.

[0028] The U-shaped counterweight rod 11 limits the moving range of the counterweight plate 13, so that it cannot leave the main frame 02 and can only move on the U-shaped counterweight rod 11. Several counterweight plates 13 can be reasonably distributed according to the strength of different groups. When the required counterweight is larger, the rear counterweight plate 13 can be appropriately moved to the front. When the required counterweight is smaller, the front counterweight plate 13 can be appropriately moved to the back.

[0029] As a specific implementation method, Figure 3-5 As shown, the limiting assembly includes a limiting protrusion 122 and an annular ring 132. A plurality of limiting protrusions 122 are arranged perpendicular to the axis of the slide bar 12 and are arranged at intervals along the axial direction thereof. An annular ring 132 is fixedly provided on both end surfaces of each weight plate 13. A limiting groove 134 of an annular structure adapted to the limiting protrusion 122 is formed between the annular rings 132 on both end surfaces of each weight plate 13. A groove 133 adapted to the limiting protrusion 122 is provided on the annular ring 132. The grooves 133 of the two annular rings 132 on the same weight plate 13 are symmetrically arranged relative to the weight plate 13. The distance between two adjacent protrusions is consistent with the distance between the limiting grooves 134 on two adjacent weight plates 13. The slide bar 12 includes a slide bar body 121 of a tubular structure. A plurality of limiting protrusions 122 are fixedly provided on the slide bar body 121. The weight plate 13 comprises a weight plate body 131 , and an annular ring 132 is fixedly mounted on both end surfaces of the weight plate body 131 by means of pins 00 .

[0030] During training, the limiting protrusion 122 is located in the limiting groove 134 between the two annular rings 132 on the weight plate 13, and the weight plate 13 is stuck by the limiting protrusion 122, and the limiting protrusion 122 limits the weight plate 13; when it is necessary to adjust the position of the weight plate 13 at both ends of the U-shaped counterweight rod 11, the weight plate 13 is rotated to make the groove 133 on the annular ring 132 rotate to the position of the limiting protrusion 122, and the restriction of the limiting protrusion 122 is released, and the weight plate 13 can be moved along the sliding rod 12 until it passes the middle position of the U-shaped counterweight rod 11 and reaches the other end, and then the weight plate 13 is limited according to the above reverse steps to achieve weight adjustment. This structure can realize the adjustable position of the weight plate 13, and then realize the adjustable weight of the equipment training. Through the limiting structure of the limiting protrusion 122 and the limiting groove 134, the position of the weight plate 13 relative to the U-shaped weight bar 11 can be relatively fixed, preventing the weight plate 13 from being displaced during training and causing the weight to change. When used outdoors, the U-shaped weight bar 11 can also play an anti-theft role.

[0031] As a specific implementation method, Figure 1As shown, the thrust frame includes an upper arm 09, a forearm 08 and a connecting arm 10, wherein the upper arm 09 and the head end of the forearm 08 are fixedly connected, the tail end of the forearm 08 is fixedly connected to the head end of the connecting arm 10, and is hinged to the top end of the linkage rod 71 through a pin, and the tail end of the upper arm 09 and the tail end of the connecting arm 10 are rotatably connected to the hinge seat at the top end of the main frame 02 through a limiting main shaft 22. The connecting arm 10 forms a stable structure for the upper arm 09 and the forearm 08. The leg rod 07 is an inwardly bent L-shaped structure, and different strengths and muscle groups can be trained by holding different positions.

[0032] As a specific implementation method, Figure 1 As shown, the main frame 02 includes two columns, which are fixedly connected by a crossbeam 03. A reference rod 21 is fixedly arranged parallel to the crossbeam 03. The two ends of the reference rod 21 are fixedly connected to the two columns. The hinge seat is fixedly arranged at the top of the column, and the U-shaped seat is fixedly arranged in the middle of the column. The rod bodies at both ends of the U-shaped counterweight rod 11 pass through the limit shaft 123 and are vertically fixedly connected to the upper arm 09 of the thrust frame through the pin 00. The limit shaft 123 is vertically fixedly connected to the upper arm 09 of the thrust frame. The tops of the two columns are tilted at a certain angle. The bottom of the column and the bottom of the L-shaped support rod 04 are buried below the ground, and the reference rod 21 is the horizon.

[0033] In summary, the utility model solves the problem in traditional technology that the weight of outdoor leg trainers cannot be adjusted and cannot meet the usage needs of different groups, and is suitable for the field of sports equipment technology.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of protection of the claims of the utility model.

Claims

1. A strength type leg trainer, comprising a main frame, characterized in that: The bottom of the main frame is fixed to the ground, thrust racks are arranged on both sides of the top, adjustable counterweight units are arranged on the sides of the thrust racks, a leg training unit is arranged at the head end of the thrust rack, the tail end of the thrust rack is hinged to the top of the main frame, an L-shaped support rod is fixed below the tail end of the thrust rack, the L-shaped support rod is fixedly connected to the main frame through a crossbeam, and a seat plate and a backrest plate are arranged on the top of the L-shaped support rod; The leg training unit comprises a linkage rod and a leg hook frame, the top end of the linkage rod is hinged to the head end of the thrust frame through a pin, the bottom end of the linkage rod is hinged to the middle part of the leg hook frame through a pin, the tail end of the leg hook frame is hinged to the middle part of the main frame through a U-shaped seat, and the head end of the leg hook frame is covered with a protective cover; The adjustable counterweight unit includes a U-shaped counterweight rod fixedly arranged on the side of the thrust frame and perpendicular to it, a sliding rod is fixedly arranged on the rod body at both ends of the U-shaped counterweight rod, and a plurality of counterweight plates are slidably arranged on the sliding rod and axially limited by a limit assembly and the sliding rod.

2. A strength type leg training device according to claim 1, characterized in that: The limiting assembly includes a limiting protrusion and an annular ring. Several limiting protrusions are arranged perpendicular to the axis of the slide rod and are arranged at intervals along its axial direction. An annular ring is fixed on the two end surfaces of each counterweight plate, and a limiting groove of an annular structure adapted to the limiting protrusion is formed between the annular rings on the two end surfaces of each counterweight plate.

3. A strength type leg training device according to claim 2, characterized in that: The annular ring is provided with a groove matched with the limiting protrusion, and the grooves of the two annular rings on the same counterweight plate are symmetrically arranged relative to the counterweight plate.

4. A strength type leg training device according to claim 1, characterized in that: The thrust frame includes an upper arm, a forearm and a connecting arm. The upper arm and the head end of the forearm are fixedly connected, the tail end of the forearm is fixedly connected to the head end of the connecting arm, and is hinged to the top end of the connecting rod through a pin shaft, and the tail end of the upper arm and the tail end of the connecting arm are rotatably connected to the hinge seat at the top end of the main frame through a limiting main shaft.

5. A strength type leg training device according to claim 4, characterized in that: The main frame includes two columns, which are fixedly connected by a crossbeam. A reference rod is fixedly arranged parallel to the lower part of the crossbeam. Both ends of the reference rod are fixedly connected to the two columns. A hinged seat is fixedly arranged at the top of the column, and a U-shaped seat is fixedly arranged in the middle of the column.

6. A strength type leg training device according to claim 4, characterized in that: The rod bodies at both ends of the U-shaped counterweight rod pass through the limiting shaft and are vertically fixedly connected to the upper arm of the thrust frame through pins, and the limiting shaft is vertically fixedly connected to the upper arm of the thrust frame.

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