Adjustable leg bending and stretching machine

Abstract

The utility model discloses an adjustable leg flexion and extension machine, and relates to the field of leg flexion and extension machines, the adjustable leg flexion and extension machine comprises a fixing frame, the top of the fixing frame is provided with an adjusting mechanism, and one side of the adjusting mechanism is provided with a lifting mechanism; an adjusting mechanism; comprising a rotating shaft installed in a fixing frame, and a bearing frame is arranged on the outer surface of the rotating shaft and located on one side of the fixing frame. Through the effect of the adjusting mechanism, after the sponge barrel rotates around the rotating shaft to a certain angle, the rotated sponge barrel can be fixed, the inserting pin is manually pulled outwards, the sponge barrel is manually turned over upwards around the rotating shaft, the sponge barrel drives the supporting rod to rotate, and after the sponge barrel is turned over to a certain angle, the sponge barrel is fixed. And when the pulling force applied to the inserting pin is removed, the inserting pin is inserted into a hole corresponding to the hole disc, the balancing weight is arranged on the bearing frame, the shank is arranged on one side of the sponge barrel, training can be performed, and the effect of conveniently adjusting the rotating angle of the sponge barrel is achieved.

Description

Technical Field

[0001] This utility model relates to the field of leg extension machine technology, and in particular to an adjustable leg extension machine. Background Technology

[0002] In the current context of the rapid development of the fitness industry, the leg extension machine has received much attention as an important piece of equipment for exercising the lower limbs. With the improvement of people's health awareness, fitness has become an important part of life, and the focus on lower limb muscle training is constantly increasing. The leg extension machine is used to exercise lower limb muscle groups such as the quadriceps. Professional athletes need high-intensity, targeted training, while fitness beginners need progressive and adjustable training.

[0003] The trainee first sits on the leg extension machine, places their legs on one side of the foam roller, and applies a certain pushing force to the foam roller. The counterweight connected to the foam roller is raised to a certain height when the legs push the foam roller.

[0004] Existing leg extension machines are not convenient for adjusting the rotation angle of the sponge roller during trial use, which makes them unsuitable for use by a wider range of trainees. They also lack the function of training the back of the calf. Therefore, an adjustable leg extension machine is proposed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides an adjustable leg flexion and extension machine.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: an adjustable leg extension machine, including a fixed frame, an adjustment mechanism is provided on the top of the fixed frame, and a lifting mechanism is provided on one side of the adjustment mechanism.

[0009] In a preferred embodiment of the adjustable leg extension machine of this utility model, the adjusting mechanism includes a rotating shaft installed inside a fixed frame. A load-bearing frame is provided on the outer surface of the rotating shaft and on one side of the fixed frame. A support rod is installed on the outer surface of the rotating shaft on the other side of the fixed frame. A sponge tube is installed on one side of the support rod. A perforated plate is provided on one side of the rotating shaft.

[0010] In a preferred embodiment of the adjustable leg extension machine described in this utility model, the lifting mechanism includes a backrest installed inside a fixed frame, a seat cushion hinged to the top of the fixed frame, handles symmetrically arranged on the outer surface of the fixed frame, and a prone board installed inside the fixed frame.

[0011] In a preferred embodiment of the adjustable leg extension machine described in this utility model, a hollow tube is fixedly installed inside the support rod, and a plug pin is provided inside the hollow tube, which is movably inserted into the inside of the perforated plate.

[0012] In a preferred embodiment of the adjustable leg extension machine described in this utility model, a limiting ring is fixedly installed on the outer surface of the insertion pin, and a spring is provided on one side of the limiting ring.

[0013] In a preferred embodiment of the adjustable leg extension machine described in this utility model, the limiting ring is slidably connected inside the hollow tube, the spring is located outside the insertion pin, and the other end of the spring is fixedly connected to the hollow tube.

[0014] In a preferred embodiment of the adjustable leg extension machine described in this utility model, the bottom of the seat cushion is symmetrically equipped with perforated blocks, a fixing pin is provided on one side of the perforated blocks, and a limit pin is provided on one side of the fixing frame.

[0015] In a preferred embodiment of the adjustable leg extension machine of this utility model, the perforated blocks are symmetrically arranged on both sides of the fixed frame, and the fixing pins are sequentially inserted into the perforated blocks, the fixed frame and another perforated block, and the limiting pins are sequentially inserted into the fixed frame and the prone plate.

[0016] (III) Beneficial Effects

[0017] This utility model provides an adjustable leg flexion and extension machine. It has the following beneficial effects:

[0018] 1. Through the adjustment mechanism, after the sponge tube rotates around the axis to a certain angle, it can be fixed. Manually pull the plug pin outward to manually flip the sponge tube upward around the axis. The sponge tube drives the support rod to rotate. After flipping the sponge tube to a certain angle, release the tension applied to the plug pin. At this time, the plug pin is inserted into the corresponding hole of the hole plate. Place the counterweight on the load-bearing frame. At this time, place the lower leg on one side of the sponge tube for training. It has the function of facilitating the adjustment of the sponge tube rotation angle.

[0019] 2. The lifting mechanism facilitates adjustment of the seat's flip angle and the height of the push-up board. Manually pull the fixing pin out of the two holes and the fixing frame, flip the seat upwards around the hinge, and after flipping it to a certain angle, insert the fixing pin in the opposite direction into the two holes and the fixing frame. Manually pull the limiting pin out of the push-up board, and manually pull the push-up board upwards to the appropriate position. After pulling it into the push-up board, insert the limiting pin into the push-up board. After adjusting the seat and push-up board, training can begin, which improves the comfort of the trainee. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the overall structure of the adjustment mechanism of this utility model.

[0023] Figure 3 This is a partial exploded cross-sectional view of the adjustment mechanism of this utility model.

[0024] Figure 4 This is a utility model Figure 3 Enlarged diagram of point A in the middle.

[0025] Figure 5 This is a schematic diagram of the overall structure of the lifting mechanism of this utility model.

[0026] Figure 6 This is a utility model Figure 5 Enlarged diagram of point B in the middle.

[0027] In the diagram, 1 is the fixed frame; 2 is the adjusting mechanism; 201 is the rotating shaft; 202 is the load-bearing frame; 203 is the support rod; 204 is the perforated plate; 205 is the sponge tube; 206 is the plug pin; 207 is the hollow tube; 208 is the limiting ring; 209 is the spring; 3 is the lifting mechanism; 301 is the backrest; 302 is the seat cushion; 303 is the handle; 304 is the prone board; 305 is the perforated block; 306 is the fixing pin; and 307 is the limiting pin. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Example 1

[0030] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This is the first embodiment of the present invention. This embodiment provides an adjustable leg extension machine, including a fixed frame 1, an adjustment mechanism 2 is provided on the top of the fixed frame 1, and a lifting mechanism 3 is provided on one side of the adjustment mechanism 2.

[0031] Adjustment mechanism 2 includes a rotating shaft 201 installed inside the fixed frame 1. A load-bearing frame 202 is provided on the outer surface of the rotating shaft 201 and on one side of the fixed frame 1. A support rod 203 is installed on the outer surface of the rotating shaft 201 and on the other side of the fixed frame 1. A sponge tube 205 is installed on one side of the support rod 203. A perforated plate 204 is provided on one side of the rotating shaft 201.

[0032] Specifically, the rotating shaft 201 is rotatably connected inside the fixed frame 1, the load-bearing frame 202 is fixedly sleeved on the outside of the rotating shaft 201 and located on the outside of the fixed frame 1, the support rod 203 is rotatably connected on the outside of the rotating shaft 201 and located on the other side of the fixed frame 1, and the perforated plate 204 is fixedly installed on one side of the rotating shaft 201. By adjusting the height of the support rod 203, the rotation angle of the sponge tube 205 around the rotating shaft 201 can be adjusted.

[0033] A hollow tube 207 is fixedly installed inside the support rod 203. A plug pin 206 is provided inside the hollow tube 207, and the plug pin 206 is movably inserted into the hole plate 204.

[0034] Specifically, the insertion pin 206 can move left and right inside the hollow tube 207. After the support rod 203 is rotated around the pivot 201 to a certain angle, the insertion pin 206 is inserted into the corresponding hole of the perforated plate 204, thereby adjusting the height of the sponge tube 205 to a certain level.

[0035] A limiting ring 208 is fixedly installed on the outer surface of the insertion pin 206, and a spring 209 is provided on one side of the limiting ring 208.

[0036] Specifically, when the pin 206 is not under external tension, the spring 209 can push the limiting ring 208 toward the hole plate 204. Since the limiting ring 208 is fixedly installed on the outer surface of the pin 206, the pin 206 can be stabilized in the hole of the hole plate 204.

[0037] The limiting ring 208 is slidably connected inside the hollow tube 207, the spring 209 is located outside the insertion pin 206, and the other end of the spring 209 is fixedly connected to the hollow tube 207.

[0038] Furthermore, manually pull the insertion pin 206. The insertion pin 206 moves within the hollow tube 207. The insertion pin 206 causes the limiting ring 208 to compress and deform the spring 209, pulling the insertion pin 206 out of the hole in the perforated plate 204. Manually rotate the sponge tube 205 upwards around the rotating shaft 201. After rotating the sponge tube 205 to a certain angle, release the tension applied to the insertion pin 206. At this point, under the action of the spring 209, the limiting ring 209 will... 08. Push in the opposite direction, the limiting ring 208 drives the insertion pin 206 to move in the opposite direction, inserting the insertion pin 206 into the corresponding hole of the hole plate 204. After adjusting the angle of the sponge tube 205, place the counterweight on the load-bearing frame 202. The lower leg contacts the sponge tube 205 and exerts force upward. At this time, the sponge tube 205 rotates around the rotating shaft 201, and under the action of the insertion pin 206, it drives the load-bearing frame 202 to rotate around the rotating shaft 201 as well, so that leg training can be performed.

[0039] Example 2

[0040] Reference Figure 5 and Figure 6 This is the second embodiment of the present invention, which is based on the previous embodiment and includes a lifting mechanism 3 that can improve the comfort of trainees.

[0041] The lifting mechanism 3 includes a backrest 301 installed inside the fixed frame 1, a seat cushion 302 hinged to the top of the fixed frame 1, handles 303 symmetrically arranged on the outer surface of the fixed frame 1, and a prone board 304 installed inside the fixed frame 1.

[0042] Specifically, the seat cushion 302 can rotate through the hinge, the backrest 301 can move on the fixed frame 1, and the push-up board 304 can be pulled upward. The trainee sits on the adjusted seat cushion 302, holds the symmetrical handles 303 with both hands, leans against the backrest 301, and places the legs on the opposite side of the seat cushion 302 and the push-up board 304. Once the sitting posture is adjusted, training can begin.

[0043] The bottom of the seat cushion 302 is symmetrically equipped with perforated blocks 305, and a fixing pin 306 is provided on one side of the perforated block 305, and a limit pin 307 is provided on one side of the fixing frame 1.

[0044] Specifically, pull the fixing pin 306 out of the two hole blocks 305 and the fixing frame 1, flip the seat cushion 302 upward around the hinge, and after flipping it to a certain angle, manually insert the fixing pin 306 into the hole block 305, the fixing frame 1 and the other hole block 305 in sequence to adjust the flipping angle of the seat cushion 302.

[0045] Hole blocks 305 are symmetrically arranged on both sides of the fixing frame 1, and fixing pins 306 are sequentially inserted into the holes 305, the fixing frame 1 and another hole block 305. Limiting pins 307 are sequentially inserted into the fixing frame 1 and the prone plate 304.

[0046] Specifically, pull the limiting pin 307 outward from inside the fixed frame 1 and disengage it from the prone plate 304. Pull the prone plate 304 upward to a suitable height, and then insert the limiting pin 307 back into the prone plate 304 in the opposite direction to fix the prone plate 304 in the fixed frame 1.

[0047] Next, manually pull the fixing pin 306 outwards and completely disengage it from the two hole blocks 305 and the fixing frame 1. Flip the seat cushion 302 around the hinge. After adjusting the flipping angle of the seat cushion 302, insert the fixing pin 306 into the corresponding hole block 305 and the fixing frame 1. Manually pull the limiting pin 307 out of the prone board 304. Pull the prone board 304 upwards. After adjusting the height of the prone board 304, insert the limiting pin 307 into the prone board 304. At this time, the trainee sits on the seat cushion 302, leans against the backrest 301, and places both legs on the opposite side of the prone board 304 and the fixing frame 1 to perform the training.

[0048] Working principle: Manually pull the fixing pin 306 out of the hole block 305 and the fixing frame 1. Manually flip the seat cushion 302 upward around the hinge. At this time, the seat cushion 302 drives the two hole blocks 305 to move. After flipping to the appropriate angle, manually insert the fixing pin 306 back into the two hole blocks 305 and the fixing frame 1 to complete the adjustment of the seat cushion 302. Manually pull the limiting pin 307 out of the prone board 304. At this time, the limiting pin 307 has not disengaged from the fixing frame 1. Pull the prone board 304 upward to the appropriate height, and then insert the limiting pin 307 back in. In the push-up board 304, the push-up board 304 is fixed in the fixing frame 1. At this time, the trainee sits on the seat cushion 302, leaning against one side of the backrest 301, with both legs placed on the opposite side of the push-up board 304 and the fixing frame 1, with the front of both lower legs placed on the sponge tube 205, and the counterweight placed on the support frame 202. The legs apply a pushing force to the sponge tube 205, causing the sponge tube 205 to drive the support rod 203 to rotate around the pivot 201. Under the action of the insertion pin 206, the insertion pin 206 fixes the support rod 203 and the perforated plate 204. When the sponge tube 205 is pushed... The sponge cylinder 205 drives the support rod 203 to rotate, which in turn drives the perforated plate 204 to rotate. The perforated plate 204 then drives the rotating shaft 201 to rotate, which in turn drives the load-bearing frame 202 to rotate, thus enabling leg training. When it is necessary to adjust the rotation angle of the sponge cylinder 205, manually pull the insertion pin 206 outward. The insertion pin 206 drives the limiting ring 208 to move, and the limiting ring 208 compresses the spring 209, causing it to deform and moving one end of the insertion pin 206 out of the perforated plate 204. At this time, manually flip the sponge cylinder 205, and the sponge cylinder 205 drives the support rod 203 to rotate. Rotating the pivot 201 flips the support rod 203 to a suitable angle, then releasing the tension applied to the insertion pin 206. At this time, under the action of the spring 209, the limiting ring 208 is pushed in the opposite direction. The limiting ring 208 drives the insertion pin 206 to move in the opposite direction, pushing the insertion pin 206 into the corresponding hole in the perforated plate 204, thus completing the flipping requirement of the sponge tube 205. The trainee's legs are trained by pushing the sponge tube 205. When it is necessary to train the back of the calf, the trainee lies on the push-up board 304 and contacts the back of the leg with the sponge tube 205 to train.

[0049] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. An adjustable leg curl and extension machine comprising a stationary frame (1), characterized in that: The top of the fixed frame (1) is provided with an adjusting mechanism (2), one side of the adjusting mechanism (2) is provided with a lifting mechanism (3); The adjusting mechanism (2) comprises a rotating shaft (201) mounted in the fixed frame (1), the outer surface of the rotating shaft (201) and located on one side of the fixed frame (1) is provided with a bearing frame (202), the outer surface of the rotating shaft (201) and located on the other side of the fixed frame (1) is provided with a support rod (203), one side of the support rod (203) is provided with a sponge cylinder (205), one side of the rotating shaft (201) is provided with a hole disc (204); The lifting mechanism (3) comprises a backrest (301) mounted in the fixed frame (1), the top of the fixed frame (1) is hinged with a cushion (302), the outer surface of the fixed frame (1) is symmetrically provided with a handle (303), the inside of the fixed frame (1) is provided with a prone plate (304).

2. An adjustable leg curl machine as recited in claim 1, wherein: The inside of the support rod (203) is fixedly provided with a hollow tube (207), the inside of the hollow tube (207) is provided with a plug-in pin (206), the plug-in pin (206) is movably plugged into the inside of the hole disc (204).

3. An adjustable leg curl machine as recited in claim 2, wherein: The outer surface of the plug-in pin (206) is fixedly provided with a limiting ring (208), one side of the limiting ring (208) is provided with a spring (209).

4. An adjustable leg curl machine as recited in claim 3, wherein: The limiting ring (208) is slidingly connected in the inside of the hollow tube (207), the spring (209) is located outside the plug-in pin (206), and the other end of the spring (209) is fixedly connected with the hollow tube (207).

5. An adjustable leg curl machine as recited in claim 1, wherein: The bottom of the cushion (302) is symmetrically provided with a hole block (305), one side of the hole block (305) is provided with a fixed pin (306), one side of the fixed frame (1) is provided with a limiting pin (307).

6. An adjustable leg curl machine as recited in claim 5, wherein: The hole block (305) is symmetrically provided on both sides of the fixed frame (1), and the fixed pin (306) is sequentially plugged into the inside of the hole block (305), the fixed frame (1) and the other hole block (305), and the limiting pin (307) is sequentially plugged into the fixed frame (1) and the prone plate (304).

Images