CN2784032Y

CN2784032Y - Buffer structure of running platform

Info

Publication number: CN2784032Y
Application number: CN 200420012126
Authority: CN
Inventors: 张煌东
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-23
Filing date: 2004-06-23
Publication date: 2006-05-31
Anticipated expiration: 2014-06-23

Abstract

The utility model relates to a buffering structure for running platforms, the structure of which comprises that both sides of the back end of a running platform are pivoted with a framework into a movable fulcrum; the framework is positioned on both sides of the front end of the running platform and is provided with a symmetrical pivot joint seat which is pivoted with a lever; the front end of the lever is sheathed with a compression spring; the other end of the compression spring is fixedly arranged at a transverse rod on the front end of the framework; the top surface of the other end of the lever is fixedly provided with an elastic body; one end of the elastic body is stuck and contacted with the bottom of the front end of the running platform. The buffering structure for running platforms is composed of the constructional elements. When the running platform is under stress, one end of the running platform can be connected with the compression spring by the elastic body which is stuck and contacted with the bottom of the front end and by applying a lever principle for the efficacy of load energy absorption, vibration mitigation, etc. In addition, a symmetrical adjusting device can be arranged at the lower back part of the pivot joint seat of the lever on the inner side opposite to the framework. One end of the adjusting device is connected with the front end of the lever then. Thus, the purpose of adjusting buffering sizes can be achieved by operating the adjusting device.

Description

Buffer structure of running platform

Technical Field

The utility model relates to machinery, in particular to a buffer structure of a running platform.

Background

At present, the buffering structure of the running platform is generally that the running machine is provided with a frame, and the opposite inner sides of the frame are provided with running belts capable of moving circularly; the two sides of the bottom of the front end are provided with support rods which can support the frame to keep a proper height with the ground, and the bottom of the other end is provided with a fixed seat; a spring plate with the same width as the frame and a proper length, wherein the front end of the spring plate is locked at the bottom of the fixed seat, and two sides of the bottom at the other end are downwards fixedly provided with symmetrical foot stands which can be placed on the ground; the distance between the elastic sheet and the frame is proper, so that the back end of the frame can achieve the function of elastic vibration up and down by the elastic sheet connected with the fixed seat; the adjusting rod is sleeved with a regulating rod, the upper end face and the lower end face of the regulating rod are respectively attached to the opposite inner side faces of the frame and the elastic sheet, the end face of the frame, which is attached to and contacted with the regulating rod, is a rack with a proper length, and the rack can be engaged and positioned by the gear ring of the regulating rod, so that the hanging distance of the rear section part of the elastic sheet and the frame can be changed by moving the regulating rod back and forth, and the shock-absorbing elasticity of the rear end part of the frame can be changed;

although the above structure has the functions of shock absorption and shock absorption elasticity adjustment, it has the following disadvantages:

1. the bottom of the rear end of the frame is only connected and supported by a spring plate, so that the frame can generate the phenomenon of continuous vibration frequency when being vertically stressed, if the frequency is different from the exercise pace frequency of a user, the user can not judge the correct height of the running belt when the foot steps on, and the condition is easy to cause exercise injury of the part;

2. the bottom of the back end of the frame is mainly provided with a spring sheet connected with the back end of the frame, so that the back end of the frame can be in an empty state to achieve the effect of elastic force and shock absorption; accordingly, the length of the elastic sheet connected with the rear end of the frame is limited; if the elastic sheet is too long, the upper edge of the rear end of the elastic sheet can be completely attached to the bottom surface of the frame, and the due function of the elastic sheet is lost; if the length is too short, the shock absorption function is reduced, so the elastic sheet can only be set within a fixed length range, and the efficacy of the structural design for adjusting the shock absorbing structure is not great.

SUMMERY OF THE UTILITY MODEL

According to the purpose of the utility model, aiming at the defects of the buffer structure of the prior running platform, the buffer structure of the running platform is provided, one end of the running platform is pivoted at the rear end of a frame and is arranged at the inner side, the frame is provided with a relative inner side which can be pivoted at the base of the running machine, and the buffer structure is connected and arranged between the two sides of the front end of the running platform and the inner side of the front end of the frame, so that the running platform has better energy absorption and better relaxation elastic force when being stressed and vibrated;

another object of the present invention is to provide a cushion structure with adjustable cushion force, which can adjust the running platform according to different body weights; the structure includes:

a movable pivot is pivoted with the frame at the two sides of the rear end of the running platform; the frame is provided with symmetrical pivoting seats at two sides of the front end of the running platform, the pivoting seats are provided with a lever, the front end of the pivoting seats is sleeved with a compression spring, the other end of the compression spring is fixedly arranged on a cross bar at the front end of the frame, the top surface at the other end of the lever is fixedly provided with an elastic body, and one end of the elastic body is attached to the bottom of the front end of the running platform; by means of the components, when the running platform is stressed, the running platform can be connected with a compression spring from one end by an elastic body which is attached to the bottom of the front end and by applying the lever principle, so that the running platform has the effects of absorbing load energy, alleviating vibration and the like;

furthermore, a symmetrical adjusting device can be arranged at the lower rear part of the lever pin joint seat at the relative inner side of the frame, and one end of the adjusting device is connected with the front end of the lever, thus achieving the purpose of adjusting the size of the buffer by operating the adjusting device.

The utility model has the advantages that: the running platform has an optimal shock absorption effect, a symmetrical adjusting device is arranged at the upper rear part of the lever pin joint seat by utilizing the relative inner side of the frame, and one end of the adjusting device is connected with the front end of the lever, thus achieving the purpose of adjusting the buffer size by operating the adjusting device.

Description of the drawings:

FIG. 1 is a schematic bottom view of a combination of the embodiments of the present invention;

FIG. 2 is a schematic diagram of a combined side view cross section of an embodiment of the present invention;

FIG. 3 is a schematic diagram of a combined side view cross section of an embodiment of the present invention;

fig. 4 is a schematic side view of a three-component assembly according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a fourth partial combination according to an embodiment of the present invention;

FIG. 6 is a side view of a five-combination embodiment of the present invention;

fig. 7 is a schematic side view of five parts of an embodiment of the present invention;

fig. 8 is a schematic side view of a six-combination cross-section according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a six-part combination according to an embodiment of the present invention.

The specific implementation mode is as follows:

as shown in FIGS. 1-2, the treadmill 10 is mounted on the opposite inner sides of a frame 20, and the frame 20 is pivotally mounted on the opposite inner sides of the treadmill base (this part is not the focus of the present invention, so this figure is not shown); between the running board 10 and the frame 20, a buffer device is designed to be installed, which includes:

a movable pivot 11 is pivoted with the frame 20 at the two sides of the rear end of the running platform 10; the frame 20 is located at the front end of the running platform 10 and has symmetrical pivoting seats 21 on both sides, the pivoting seat 21 has a lever 22, the front end is sleeved with a compression spring 23, the other end of the compression spring 23 is fixed on the cross bar 201 at the front end of the frame 20, the top surface at the other end of the lever 22 is fixed with an elastic body 24, one end of the elastic body 24 is contacted with the bottom of the front end of the running platform 10;

wherein, the front end of the lever 22 is bent downwards and then bent forwards to form a sleeve-jointing end 221, so as to provide one end of the compression spring 23 for convenient sleeve-jointing; the rear end of the lever 22 is bent upward and vertically to form an upright section 222, and an elastic body 24 is fixed on the top of the upright section 222; the elastomer 24 may be made of a plastic; the cross bar 201 at the front end of the frame 20 is provided with a positioning point 202 corresponding to the nesting end 221, which can be used for the compression spring 23 to be nested and limited, and can also be designed as a concave ring groove, which also has the function of accommodating and limiting one end of the compression spring; when the running platform 10 is vertically stressed, the elastic body 24 attached to the bottom of the front end transversely pushes the compression spring 23 through the linkage of the lever 22, so as to achieve the effects of absorbing load energy and alleviating vibration;

as shown in fig. 3, in order to implement the second equivalent embodiment of the present invention, the front end of the lever 22 is bent upwards to form a longitudinal engaging end 223, and the cross rod 201 at the front end of the frame 20 extends to form a protruding plate 203 corresponding to the longitudinal end 223, so that the compression spring 23 can be inserted between the longitudinal engaging end 223 and the protruding plate 203, thereby providing the same shock absorbing and buffering effects;

as shown in fig. 4, an equivalent embodiment of the present invention is a third embodiment, in which the front end of the lever 22 is connected to the bottom of the frame 20 by an extension spring 231, so as to have the function of shock absorption and buffering;

as shown in fig. 5, another preferred embodiment of the connection between the elastic body at the rear end of the lever and the running platform of the buffering structure of the present invention is that a through hole 224 is formed at the rear end of the lever 22, a through hole 12 is formed at the running platform 10 corresponding to the through hole 224, an elastic body 24 is sandwiched between the through hole 224 of the lever 22 and the through hole 12 of the running platform 10, and a circular hole 241 is formed therein, and a locking element 25 is inserted through the through

holes

224, 241, 12 to achieve the connection purpose, wherein the locking element 25 can be a screw rod 251 and a nut 252;

as shown in fig. 6, a symmetrical adjusting device 30 connected to the front end of the lever 22 is installed at the lower rear part of the pivoting seat 21 of the lever 22 on the opposite inner side of the frame 20, and the adjusting device 30 has the function of adjusting the cushion size of the running platform; wherein,

the adjusting device 30 includes:

a bottom pulley 31 disposed below the pivot seat and having a circular groove 311 for accommodating and limiting the rope 32;

a duct 33, disposed behind the bottom pulley 31, having a screw hole 331 at the front end in the axial direction and a cut-out 332 with a proper length near the front end edge; a screw tube 34 is threaded in the screw hole 331 of the conduit 33, one end of which extends into the tube hole of the conduit 33 and is fixedly provided with a knob 341 at the section of the cutting groove 332, so that the screw tube 34 can be adjusted to rotate and move back and forth; a front baffle 35, a compression spring 36 and a rear baffle 37 are sequentially sleeved in the conduit 33, wherein the front and rear baffles 35, 37 are axially provided with round holes 351, 371, and the front end surface of the front baffle 35 is abutted against the rear end surface of the spiral tube 34;

a rope 32, one end of which is connected with the front end of the lever 22, the other end of which passes through the tube hole of the solenoid 34, the round hole 351 of the front baffle 35, the central hole of the compression spring 36 and the round hole 371 of the rear baffle 37 after passing around the bottom of the bottom pulley 31, and finally is fixed at the rear end part of the rear baffle 37;

when the running platform 10 is vertically stressed to press the rear end of the lever 22 to sink, the front end of the lever 22 rises upwards immediately, and the rear end of the traction rope 32 moves forwards, and the rear end of the traction rope is fixedly arranged on the rear baffle 37, so that the rear baffle 37 also extrudes the compression spring 36 forwards immediately, and the running platform 10 can absorb the load applied to the running platform 10 by the extrusion of the compression spring 36, so that the running platform 10 obtains an optimal shock absorption and buffering effect;

in addition, the adjusting structure 30 can adjust the front and rear displacement of the screw tube 34 by rotating the knob 341 on the screw tube 34 to drive the front stop piece 35 contacted with the rear end to squeeze or release the compression spring 36, so as to change the compression load of the compression spring 36, thereby achieving the purpose of adjusting the setting of the buffering force and the vibration absorption force of the running platform 10;

as shown in fig. 7, when the running platform 10 is installed on the frame 20, the rotating button 341 of the screw tube 34 is required to be rotated by the operation below the frame 20, which causes inconvenience, so the utility model is characterized in that two side plates of the frame 20 are provided with symmetrical window holes 204 at the positions corresponding to the rotating button 341, and the outside end of the window hole 204 is provided with the scale 205, accordingly, the rotating button 341 which is inserted into the window hole 204 at the side of the frame 20 to adjust the screw tube 34 is rotated, and the scale 205 provides the correct position reference after the rotating button 341 is moved, so that the adjusting devices 30 installed at two sides of the frame 20 can be maintained at the same set value;

as shown in fig. 8 to 9, for the purpose of illustrating an equivalent embodiment of the adjusting device 30 of the present invention, the device is further provided with a through hole 333 for receiving the screw 34 at the front end of the guide pipe 333 in the axial direction, and the through hole 33 is provided with a symmetrical protrusion 3331; symmetrical salient points 3321 are arranged on the upper and lower opposite inner side walls of the cutting groove 332 of the guide pipe 33; the outer edge of the screw 34 is provided with symmetrical guide grooves 342 for the projection 3331 of the through hole 333 to be sleeved, so as to limit the screw 34 to only move back and forth without rotating; a rotating button 341 with an axial screw hole 3411 for being screwed on the screw 34, the outer edge of the rotating button 341 being provided with a concave groove 3412 for accommodating the upper and lower protrusions 3321 of the slot 332, so as to limit the rotating button 341 to be mounted on the protrusion 3321 of the slot 332 for limited fixed-point rotation;

with the above-mentioned components, when the knob 341 is rotated, the screw 34 and the knob 341 are screwed together, and the protrusion 3331 of the screw 34 with the symmetrical guide grooves 342 and the through hole 333 at the front end of the guide tube 33 are engaged with each other, so that the screw 34 is driven to linearly move back and forth, and accordingly, the front stopper 35 at the rear end of the screw 34 is adjusted to press or release the compression spring 36, which also has a linear zooming function.

Claims

1. A cushion apparatus for a treadmill, the treadmill being mounted on opposite inner sides of a frame, the frame having a front end adapted to pivot on opposite inner sides of a base of the treadmill, the cushion apparatus comprising: the buffer device includes:

a movable pivot is pivoted with the frame at the two sides of the rear end of the running platform; the frame is provided with symmetrical pivoting seats at two sides of the front end of the running platform, the pivoting seat is pivoted with a lever, the front end of the pivoting seat is sleeved with a compression spring, the other end of the compression spring is fixedly arranged on a cross bar at the front end of the frame, the top surface at the other end of the lever is fixedly provided with an elastic body, and one end of the elastic body is attached to the bottom of the front end of the running platform or connected by a fixing screw.

2. A cushioning device for a running deck according to claim 1, wherein: the front end of the lever is bent downwards continuously, so that the end part of the lever is provided with a sleeving end for limiting a clamping sleeve at one end of the compression spring; the rear end of the lever is bent upwards and vertically to form a vertical section, and the top of the vertical section is fixedly provided with an elastic body.

3. A cushioning device for a running deck according to claim 1, wherein: the transverse rod at the front end of the frame is provided with positioning points corresponding to the sleeving end of the lever, and the positioning points can be used for limiting the compression spring in a sleeving manner.

4. A cushioning device for a running deck according to claim 1 or 2, wherein: the front end of the lever is bent upwards to form a longitudinal sleeve end, and the cross bar at the front end of the frame extends to a convex plate corresponding to the longitudinal sleeve end, so that the compression spring can be longitudinally sleeved between the longitudinal sleeve end and the convex plate.

5. A cushioning device for a running deck according to claim 1, wherein: the front end of the lever is connected with the bottom of the frame through an extension spring.

6. A cushioning device for a running deck according to claim 1, wherein: the relative inboard rear of being located the pin joint seat of frame establishes symmetrical adjusting device, and this adjusting device includes: the bottom pulley is arranged below the pivoting seat; a conduit is arranged behind the bottom pulley, the front end of the conduit is axially provided with a screw hole, and the near front end edge is provided with a cutting groove; a screw tube is sleeved in the screw hole of the catheter by a screw, one end of the screw tube extends into the tube hole of the catheter, and a rotating button is fixedly arranged at the end position of the cutting section and can adjust the rotation and the front and back displacement of the screw tube; a front baffle, a compression spring and a rear baffle are sequentially sleeved in the guide pipe;

one end of the rope is connected with the front end of the lever, and the other end of the rope winds around the bottom of the bottom pulley, sequentially passes through the pipe hole of the solenoid, the front baffle, the compression spring and the rear baffle and then is fixed at the rear end part of the rear baffle.

7. A cushioning apparatus for a running deck according to claim 6, wherein: the frame is provided with symmetrical window holes at the positions of the two side plates corresponding to the turn buttons, and the outer side ends of the window holes are provided with graduations.

8. A cushioning apparatus for a running deck according to claim 6, wherein: the front end of the guide pipe of the adjusting device is axially provided with a through hole for the screw rod to be sleeved, the through hole is provided with symmetrical lugs, and symmetrical convex points are arranged on the upper inner side wall and the lower inner side wall of the groove of the guide pipe; the outer edge of the screw is provided with symmetrical guide grooves; a screw hole is axially arranged on the rotary knob and can be sleeved on the screw rod in a threaded manner, and a concave ring groove is arranged at the outer edge of the rotary knob.