CN203227249U - Stroke adjustment mechanism for fitness equipment - Google Patents

Abstract

The utility model relates to a body-building apparatus's stroke guiding mechanism, include a linkage board, a component pole spare, and a raising device, the linkage board pin joint is in a frame and a pull rod of body-building apparatus, the top pin joint of component pole spare is in a swinging arms of body-building apparatus, the bottom pin joint of component pole spare is in the linkage board, the raising device has a pin joint in the reduction gear case of linkage board, one locates reduction gear case's motor, an adjustment nut who is fixed in the component pole spare, and a lead screw of connecting between reduction gear case and adjustment nut. Therefore, in the process of synchronous action of the pull rod and the swing rod of the body-building apparatus, the component force rod piece can directly bear the repeated acting force transmitted by the pull rod and the swing rod so as to achieve the effect of protecting the lifting device.

Description

Stroke adjustment mechanism for fitness equipment

technical field

The utility model relates to a stroke adjustment mechanism of fitness equipment, in particular to a stroke adjustment mechanism which can prevent the force from being too concentrated on a specific position of a lifting motor.

Background technique

In order to meet the needs of different users, general fitness equipment (such as elliptical machines) will be equipped with a lifting device to provide the function of adjusting the slope or step distance, so that users can more realistically simulate outdoor situations and different exercise modes during operation , in order to achieve the best training effect.

The traditional lifting device uses a motor to transmit power to a lead screw, so that the relative axial movement occurs between the lead screw and an adjusting nut screwed on the lead screw when it rotates, so as to adjust the slope or step distance. Adjustment. However, in the conventional design, most of the lifting devices are installed in a position that directly bears the tension or pressure transmitted from some rods (such as handrails or pedals). The structure of the device is easily affected, especially the threaded relationship between the lead screw and the adjusting nut is damaged, so there is a need for improvement.

Utility model content

The main purpose of the utility model is to provide a stroke adjustment mechanism of fitness equipment, which can avoid repeated force generated during use from being too concentrated on a specific position, so as to provide a good protection effect.

The utility model relates to a stroke adjustment mechanism of fitness equipment. The fitness equipment comprises a frame, a swing bar pivotally arranged on the frame, a runner rotatably arranged on the frame, and a shaft connected to the runner. A crank, and a pull rod connected to the crank, the stroke adjustment mechanism includes: a linkage plate, with a first pivot portion pivotally connected to the frame, a second pivot portion pivotally connected to the pull rod, and a A third pivot joint; a force component rod, pivotally connected to the third pivot joint of the swing rod and the linkage plate at its top and bottom ends; and a lifting device with a reduction gear box, a Motor, an adjusting nut, and a lead screw, the reduction gear box is pivotally connected to the linkage plate, the motor is located in the reduction gear box, the adjusting nut is fixed on the bottom end of the force component rod, and the lead screw One end of the lead screw is connected to the reduction gear box, and the other end of the lead screw is screwed to the adjusting nut.

Wherein, the third pivotal portion of the linkage plate has a socket hole, and at least one bushing is arranged in the socket hole.

Wherein, the linkage plate has a V-shaped plate and a first fixed piece, the bottom end of the V-shaped plate forms the first pivot joint, and the two top ends of the V-shaped plate form the second and second joints respectively. Three pivot joints, the first fixed piece is fixed on the periphery of the V-shaped plate and is adjacent to the first pivot joint; The plates are pivotally connected together by a pivot.

Wherein, the force component rod has a collar, two side plates arranged at intervals, and a second fixed piece, and the collar is pivotally connected to the bottom end of the swing bar through a pivot and connected to the two side plates. Between the bottom end of the side plate and the second fixing piece, the top ends of the two side plates are pivotally connected to the third pivot portion of the linkage plate through a pivot, and the second fixing piece is fixed by the adjusting nut.

Wherein, the force component rod also has at least one positioning piece, the positioning piece is fixed on the second fixing piece and has a positioning protrusion, the second fixing piece has at least one perforation, and the adjusting nut has at least one positioning hole The positioning protrusion of the positioning piece passes through the through hole of the second fixing piece and is embedded in the positioning hole of the adjusting nut.

The beneficial effects of the utility model:

The stroke adjustment mechanism of the utility model includes a linkage plate, a force component rod, and a lifting device. The linkage plate has a first pivotal portion, a second pivotal portion, and a third pivotal portion, the first pivotal portion is pivotally connected to a frame of the fitness equipment, and the second pivotal portion is pivotally connected to a pull rod of the fitness equipment; the top end of the force component rod is pivotally connected to a swing rod of the fitness equipment, and the bottom end of the force component rod is pivotally connected to the third pivotal part of the linkage plate; the lifting device It has a reduction gear box pivotally connected to the linkage plate, a motor connected to the reduction gear box, an adjusting nut fixed on the force component rod, and a motor connected to the reduction gear box and screwed to the adjusting nut. lead screw.

The stroke adjustment mechanism of the utility model utilizes the force component rod to withstand the repeated force transmitted by the pull rod and the swing rod during the actuation process, so as to avoid the lifting device from being directly stressed and achieve a protective effect.

Description of drawings

Fig. 1 is the perspective view of using the fitness equipment of the present utility model.

Fig. 2 is a perspective view of the utility model.

Fig. 3 is a three-dimensional exploded view of the utility model.

Fig. 4 is a plan view of the utility model, mainly showing the state of swinging forward; Fig. 5 is similar to Fig. 4, mainly showing the state of swinging backward.

【Symbol Description】

10 fitness equipment 30 linkage board

11 racks 31 V-shaped boards

12 Armrest 312 First pivot joint

13 swing lever 314 second pivot joint

14 shafts 316 third pivot joint

15 connecting pieces 318 socket holes

16 Runner 32 The first fixed piece

17 crank 322 first piercing

18 tie rod 33 bushing

20 stroke adjustment mechanism 40 component rods

30 linkage plate 41 collar

31 V-shaped plate 42 side plate

312 The first pivot joint 43 The second fixed piece

314 Second pivot joint 432 Second perforation

316 Third pivot joint 44 Positioning piece

318 socket hole 442 positioning convex part

32 The first fixed piece 45 The first pivot

322 first piercing 46 second pivot

10 fitness equipment 47 screws

11 Racks 50 Lifting Devices

10 fitness equipment 51 reduction gearbox

11 racks 512 bumps

12 Handrails 514 Pivot holes

13 swing lever 52 motor

14 shafts 53 adjusting nuts

15 connecting piece 532 positioning hole

16 runners 534 screw holes

17 crank 54 lead screw

18 tie rod 55 third pivot

20 stroke adjustment mechanism

Detailed ways

Please refer to Fig. 1 first, for the fitness equipment 10 using the stroke adjustment mechanism 20 of the present utility model, the fitness equipment 10 shown in the figure mainly includes a frame 11, two relative handrails 12, and two relative swing bars 13, The front end of frame 11 has a rotating shaft 14, and the two ends of rotating shaft 14 extend radially respectively a connecting piece 15, and the bottom end of each handrail 12 is connected in the middle of connecting piece 15, and the top end of each swing bar 13 is pivotally connected to each The ends of the connecting pieces 15 enable each swing lever 13 to swing up and down through the rotation of the rotating shaft 14 . Furthermore, the fitness equipment 10 further has two opposite runners 16, a crank 17, and two relative pull bars 18. The two runners 16 are rotatably arranged at the rear end of the frame 11, and the crank 17 is connected to the second runners 16. In between, the two runners 16 can rotate synchronously, and the rear ends of each pull rod 18 are connected to the crank 17, so that each pull rod 18 can swing back and forth through the action of the crank 17. In addition, the stroke adjustment mechanism 20 of the present invention cooperates with the swing rod 13 and the pull rod 18 to set up a group on both sides of the frame 11. Since the two groups have exactly the same structure, in order to save space, only the A group is explained.

Please refer to FIG. 2 and FIG. 3 , the stroke adjustment mechanism 20 of the present invention includes a linkage plate 30 , a force component rod 40 , and a lifting device 50 .

The linkage plate 30 has a V-shaped plate 31 and a first fixing piece 32 . The bottom end of the V-shaped plate 31 forms a first pivot portion 312, and the two top ends of the V-shaped plate 31 respectively form a second pivot portion 314 and a third pivot portion 316, wherein the first pivot portion 312 is used to pivotally connect the frame 11, the second pivot portion 314 is used to pivotally connect the front end of the crank 17, the third pivot portion 316 has a socket hole 318, and at least one bushing is arranged in the socket hole 318 33, in fact, setting two bushings 33 is the best implementation mode; the first fixed piece 32 is fixed on the periphery of the V-shaped plate 31 and adjacent to the first pivotal part 312, and the two sides of the first fixed piece 32 Each has a first through hole 322 .

The force component bar 40 has a collar 41 , two side plates 42 arranged at intervals, a second fixing piece 43 , and two positioning pieces 44 . The collar 41 is pivotally connected to the bottom end of the swing lever 13 through a first pivot 45 and is connected between the bottom ends of the two side plates 42 and the second fixed piece 43; The third pivotal portion 316 of 30 is embedded, and is pivotally connected with the third pivotal portion 316 of the linkage plate 30 through a second pivot 46 passing through each bushing 33; the second fixed piece 43 Both sides have a second perforation 432 respectively; each positioning piece 44 is locked on one side of the second fixing piece 43 by three screws 47, and has a positioning protrusion 442, and the positioning protrusion 442 is set on the second Inside the second through hole 432 of the fixing piece 43 .

The lifting device 50 has a reduction gear box 51 , a motor 52 , an adjusting nut 53 , and a lead screw 54 . A reduction gear set (not shown) is arranged in the reduction gear box 51, and the end surface of the reduction gear box 51 has a protrusion 512, and the protrusion 512 has a pivot hole 514, which is arranged on the connection through a third pivot 55. The first perforation 322 of the first fixed plate 32 of the moving plate 30 and the pivot hole 514 of the projection 512 of the reduction gear box 51 enable the pivot connection between the reduction gear box 51 and the linkage plate 30; adjust the nut 53 has a positioning hole 532 on both ends respectively, which are used for embedding the positioning protrusions 442 of each positioning piece 44, so that the adjusting nut 53 can be fixed in the second fixing piece 43 of the component rod 40. In addition, the adjustment The nut 53 has a screw hole 534, the axial direction of the screw hole 534 is perpendicular to the axial direction of each positioning hole 532; one end of the lead screw 54 is connected to the reduction gear set of the reduction gear box 51, and the other end of the lead screw 54 is screwed to the adjustment nut. 53 screw holes 534. Thus, when the lead screw 54 is driven by the motor 52 to rotate, the adjusting nut 53 will move along the axial direction of the lead screw 54 and synchronously drive the force component rod 40 relative to the linkage plate 30 during the movement. Pivoting, so that the force component rod 40 adjusts the position of the swing lever 13 synchronously during the pivoting process. When the swing rod 13 moves with the force component rod 40 in the axial direction of the lead screw 54, the range of the swing rod 13 moving up and down is also changed, and the range of motion is linked to the connection between the connecting piece 15 and the rotating shaft 14. The amount of rotation changes the pedal travel.

It can be seen from the above structure that during the use of the fitness equipment 10, as shown in Figure 4 and Figure 5, the swing rod 13 will move up and down through the rotating shaft 14 of the frame 11, and when moving up and down through the force component rod Component 40 drives the linkage plate 30 and the lifting device 50 to move repeatedly. In this case, the thrust and pressure generated by the swing rod 13 will be mainly borne by the force component 40 and will not be excessively concentrated on the lifting device. 50, therefore, the lead screw 54 and the adjusting nut 53 of the lifting device 50 can be effectively protected from damage.

On the other hand, two bushings 33 abutted with each other are arranged between the third pivot portion 316 of the linkage plate 30 and the top end of the force component rod 40 , so that the linkage plate 30 and the force component rod 40 are in contact with each other. Appropriate tightness can be maintained during relative pivoting, which can also help achieve the effect of protecting the lifting device 50 .

Finally, the constituent elements disclosed in the foregoing embodiments of the present invention are for illustration only and are not intended to limit the scope of the present application. Substitution or change of other equivalent elements should also be covered by the scope of the patent application of the present application.

Claims (5)

1. A stroke adjustment mechanism of fitness equipment, characterized in that, the fitness equipment comprises a frame, a swing bar pivotally arranged on the frame, a runner rotatably arranged on the frame, and a connecting wheel connected to the frame. The crank of the runner, and a pull rod connected to the crank, the stroke adjustment mechanism includes: A linkage plate has a first pivotal portion pivotally connected to the frame, a second pivotal portion pivotally connected to the pull rod, and a third pivotal portion; a force component rod, the top and bottom ends of which are respectively pivotally connected to the swing rod and the third pivot joint of the linkage plate; and A lifting device has a reduction gear box, a motor, an adjustment nut, and a lead screw, the reduction gear box is pivotally connected to the linkage plate, the motor is arranged on the reduction gear box, and the adjustment nut is fixed on The bottom end of the force component rod is connected to the reduction gear box at one end of the lead screw, and the other end of the lead screw is screwed to the adjusting nut. 2 . The stroke adjustment mechanism of fitness equipment according to claim 1 , wherein the third pivot portion of the linkage plate has a socket hole, and at least one bushing is arranged in the socket hole. 3 . 3. The stroke adjustment mechanism of fitness equipment as claimed in claim 1 or 2, wherein the linkage plate has a V-shaped plate and a first fixing piece, and the bottom end of the V-shaped plate forms the first A pivot joint, the two top ends of the V-shaped board form the second and third pivot joints respectively, the first fixing piece is fixed on the periphery of the V-shaped board and adjacent to the first pivot joint; The reduction gear box has a projection, which is pivotally connected with the first fixed piece of the linkage plate through a pivot. 4. The stroke adjustment mechanism of fitness equipment as claimed in claim 1 or 2, characterized in that, the force component rod has a collar, two side plates arranged at intervals, and a second fixed piece, the collar The bottom end of the swing rod is pivotally connected by a pivot and is connected between the bottom end of the two side plates and the second fixed plate, and the top end of the two side plates is connected to the third end of the linkage plate by a pivot. The pivot joints are pivotally connected together, and the second fixing piece is fixed by the adjusting nut. 5. The stroke adjustment mechanism of fitness equipment according to claim 4, characterized in that, the force component rod also has at least one positioning piece, the positioning piece is fixed to the second fixing piece and has a positioning protrusion, the The second fixing piece has at least one through hole, and the adjusting nut has at least one positioning hole, and the positioning protrusion of the positioning piece passes through the through hole of the second fixing piece and is embedded in the positioning hole of the adjusting nut.

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