Leg stretching and bending trainer

Abstract

The utility model relates to the technical field of leg stretching and bending training devices, in particular to a leg stretching and bending training device which comprises a leg stretching and bending training device body, a rotatable driving rod is rotatably connected to the interior of a fixing plate of the leg stretching and bending training device body, and sliding blocks slidably connected to the interior of the fixing plate are symmetrically connected to the driving rod in the fixing plate in a threaded mode. The inner threads of the two sliding blocks are opposite in direction, handles are arranged on the sliding blocks, a locking rod is elastically connected to the interior of the fixing plate, a locking piece is arranged at the end, close to the driving rod, of the locking rod in the fixing plate, and a locking groove matched with the locking piece is formed in the end, close to the locking rod, of the driving rod. Therefore, the position of the handle can be reasonably moved according to the shoulder breadth of a user, the situation that the operation posture of the user is incorrect is avoided, the training effect is guaranteed, adjustment is convenient, and the adjustment time is effectively saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to stretch leg training device technical field especially relates to a stretch leg training device. BACKGROUND

[0002] Stretch leg training device is a kind of equipment specially designed for training thigh muscle, can effectively strengthen and stimulate leg muscle group, mainly used for exercising quadriceps femoris of thigh front side and hamstrings of thigh back side, by the design of sitting or lying, the stretching and bending action of thigh can be realized, to enhance leg strength and muscle circumference, sitting stretch leg training device is used, usually needs user to sit on the seat of training device, upper body leans on the backboard of equipment, the wrist of two feet is supported in front of equipment foot block, two legs are naturally bent along with equipment, both hands hold equipment handle.

[0003] At present, the existing stretch leg training device, equipment handle usually cannot be adjusted, however, the body shape of user is not fixed, the equipment handle of unadjustable position, it is easy to make user appear incorrect operation posture, influence the training effect of user, it is inconvenient to use.

[0004] How can the position of handle be reasonably moved according to the shoulder width of user, avoid the incorrect operation posture of user, ensure training effect, and be convenient to adjust, effectively save adjustment time, become a technical problem needing to be broken through.

[0005] As above, the prior art is obviously inconvenient and defective in actual use, so it is necessary to improve. UTILITY MODEL CONTENT

[0006] In view of the above-mentioned defects, the utility model aims at providing a stretch leg training device, which can reasonably move the position of handle according to the shoulder width of user, avoid the incorrect operation posture of user, ensure training effect, and be convenient to adjust, effectively save adjustment time.

[0007] In order to realize the above-mentioned purpose, the utility model provides a stretch leg training device, including stretch leg training device body, the inside of the fixed plate of stretch leg training device body is rotatably connected with rotatable drive rod, the drive rod in the fixed plate is symmetrically screw-connected with the sliding block slidingly connected in the fixed plate inside, and the inner thread direction of two sliding blocks is opposite, and the sliding block is equipped with handle.

[0008] The inside of the fixed plate is elastically connected with locking rod, one end of the locking rod in the fixed plate is close to drive rod and is equipped with locking piece, one end of the drive rod close to locking rod is equipped with the locking groove matched with locking piece.

[0009] According to the stretch and bend leg training device, the locking rods inside the fixed plates are symmetrically provided with insertion blocks, the fixed plates are internally provided with insertion grooves matched with the insertion blocks, the insertion blocks are slidably arranged in the insertion grooves, and elastic elements are arranged between the insertion blocks and the insertion grooves.

[0010] According to the stretch and bend leg training device, the locking rods inside the fixed plates are symmetrically provided with insertion blocks, the fixed plates are internally provided with insertion grooves matched with the insertion blocks, the insertion blocks are slidably arranged in the insertion grooves, and elastic elements are arranged between the insertion blocks and the insertion grooves.

[0011] According to the stretch and bend leg training device, the handles are externally sleeved with anti-skid sleeves.

[0012] According to the stretch and bend leg training device, the fixed plates are provided with elastic pads away from the handles.

[0013] According to the stretch and bend leg training device, the locking members are splines, and the locking grooves are key grooves.

[0014] According to the stretch and bend leg training device, the driving rods and the locking rods are arranged to be penetrated out of the fixed plates at the ends away from each other, and the locking rods and the driving rods penetrated out of the fixed plates are provided with fixed blocks.

[0015] The stretch and bend leg training device can move the positions of the handles according to the shoulder widths of users, avoids incorrect operation postures of the users, guarantees training effects, and is convenient to adjust and effectively saves adjustment time. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural view of the stretch and bend leg training device;

[0017] Fig. 2 It is a structural view of the handle;

[0018] Fig. 3 It is a sectional view of the sliding block;

[0019] In the drawings: 1 - stretch and bend leg training device body, 11 - fixed plate, 111 - avoiding groove, 12 - handle, 121 - anti-skid sleeve, 2 - driving rod, 3 - sliding block, 4 - locking rod, 41 - locking member, 5 - elastic pad, 6 - elastic element, 7 - fixed block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model clearer and more understandable, the utility model will be further described in detail below in combination with the drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0021] In the description of the utility model, it should be pointed out that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0022] In the description of the utility model, it should be pointed out that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, or can be connected between two elements, and the specific meaning of the above terms in the utility model can be understood according to the specific circumstances by those skilled in the art.

[0023] Referring to Figs. 1-3 The utility model provides a stretch leg training device, including stretch leg training device body 1 (the structure of stretch leg training device body 1 is same with prior art, and it is the mature prior art in the field, and its specific structure and working principle are not repeated here), rotatable driving rod 2 is rotatably connected in the fixed plate 11 of stretch leg training device body 1, one end of driving rod 2 passes out fixed plate 11, driving rod 2 in the fixed plate 11 is symmetrically screw connected with sliding block 3, sliding block 3 is all slidingly connected in the fixed plate 11, and the internal thread direction of two sliding blocks 3 is opposite (the external thread direction of driving rod 2 and two sliding blocks 3 cooperation is also opposite), and handle 12 is all equipped on sliding block 3, and the end of handle 12 away from fixed plate 11 all passes out fixed plate 11, and the avoiding slot 111 that allows handle 12 to move horizontally is equipped on fixed plate 11;Rotating driving rod 2, two sliding blocks 3 cannot rotate with driving rod 2, and can only move on driving rod 2.

[0024] Referring to Figs. 1-3Specifically, limit blocks are symmetrically arranged on the sliding blocks 3 inside the fixed plates 11, limit grooves matched with the limit blocks are arranged in the fixed plates 11, and the limit blocks are slidingly arranged in the limit grooves, so that the sliding blocks 3 can only move horizontally inside the fixed plates 11, further preventing the sliding blocks 3 from rotating inside the fixed plates 11, and improving the stability of the sliding blocks 3.

[0025] Referring to Figs. 1-3 Preferably, anti-skid sleeves 121 are arranged on the handles 12, and the anti-skid sleeves 121 have certain deformation ability, such as rubber sleeves, to increase the friction between the hands of the user and the handles 12 and improve the comfort of the user.

[0026] Referring to Figs. 1-3 Preferably, elastic pads 5 are arranged at the ends of the fixed plates 11 away from the handles 12, and the elastic pads 5 have certain deformation ability, such as rubber pads, to improve the comfort of the user when contacting the ends of the fixed plates 11 away from the handles 12.

[0027] Referring to Figs. 1-3 Further, the locking rods 4 are elastically connected inside the fixed plates 11 (insert blocks are symmetrically arranged on the locking rods 4 inside the fixed plates 11, and insert grooves matched with the insert blocks are arranged in the fixed plates 11, and the insert blocks are slidingly arranged in the insert grooves, and elastic members 6 are arranged between the insert blocks and the insert grooves), the ends of the locking rods 4 away from the fixed plates 11 are arranged to pass through the fixed plates 11, the ends of the locking rods 4 inside the fixed plates 11 close to the driving rods 2 are provided with locking members 41, and the ends of the driving rods 2 close to the locking rods 4 are provided with locking grooves matched with the locking members 41, so that the positions of the driving rods 2 can be temporarily locked when the locking members 41 and the locking grooves are matched (under the limitation of the insert blocks and the insert grooves, the locking rods 4 cannot rotate, but can only move horizontally), preventing the driving rods 2 from rotating.

[0028] Referring to Figs. 1-3 Preferably, the ends of the locking rods 4 and the driving rods 2 passing through the fixed plates 11 are provided with fixed blocks 7, so as to facilitate the user to operate the locking rods 4 and the driving rods 2.

[0029] Referring to Figs. 1-3 Preferably, the elastic members 6 are springs, providing return power.

[0030] Referring to Figs. 1-3 Specifically, the locking members 41 are splines, and the locking grooves are key grooves, facilitating the cooperation of the locking members 41 and the locking grooves.

[0031] Referring to Figs. 1-3 Figs. 1-3When the user needs to adjust the position of the handle 12, the locking rod 4 is pulled away from the driving rod 2, the locking piece 41 is disengaged from the locking groove (at this time, the insert block extrudes the elastic piece 6), then the driving rod 2 is rotated, the position of the handle 12 is adjusted according to the shoulder width of the user, when the handle 12 is adjusted to the appropriate position, the locking rod 4 is released, the locking piece 41 is engaged with the locking groove again, the position of the driving rod 2 is locked, and the driving rod 2 is prevented from being randomly rotated.

[0032] The utility model provides a kind of stretch leg training device, including driving rod, rotating driving rod, the position of handle can be moved reasonably according to the shoulder width of user, avoid the incorrect situation of user's operation posture, ensure training effect;When handle is adjusted to appropriate position, release locking rod, make locking piece cooperate with locking groove, the position of driving rod can be locked, and driving rod is prevented from being randomly rotated;Only need to rotate driving rod, the position of two handles can be changed simultaneously, it is convenient to adjust, effectively save adjustment time.Summariing above, the beneficial effects of the utility model are: the position of handle can be moved reasonably according to the shoulder width of user, avoid the incorrect situation of user's operation posture, ensure training effect, and it is convenient to adjust, effectively save adjustment time.

[0033] Of course, the utility model can also have other various embodiments, without departing from the spirit and essence of the utility model, skilled in the art person when can make various corresponding changes and deformation according to the utility model, but these corresponding changes and deformation should all belong to the protection scope of the claims attached to the utility model.

Claims

1. A stretch and curl leg trainer characterized by, The extension and flexion leg trainer comprises an extension and flexion leg trainer body, a rotatable driving rod rotatably connected to the inside of a fixed plate of the extension and flexion leg trainer body, and symmetrically threaded sliders connected to the inside of the fixed plate and slidably connected to the driving rod, with the internal thread directions of the two sliders being opposite. An elastic locking rod is connected to the inside of the fixed plate, and a locking member is arranged on the end of the locking rod close to the driving rod.

2. The curl-straighten leg trainer of claim 1, wherein, Symmetrically arranged insertion blocks are arranged on the locking rod, and an insertion slot is arranged on the inside of the fixed plate and matched with the insertion blocks.

3. The curling leg trainer of claim 1, wherein, Limiting blocks are symmetrically arranged on the sliders, and limiting slots are arranged on the inside of the fixed plate and matched with the limiting blocks.

4. The curling leg trainer of claim 1, wherein, Anti-skid sleeves are arranged on the outside of the handles.

5. The curling and leg training device of claim 4, wherein, An elastic pad is arranged on the end of the fixed plate away from the handles.

6. The curling leg trainer of claim 1, wherein, The locking member is a spline, and the locking slot is a key slot.

7. The curling leg trainer of claim 1, wherein, The ends of the driving rod and the locking rod away from each other are both penetrated through the fixed plate, and a fixed block is arranged on the driving rod and the locking rod penetrated through the fixed plate.

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