JP2016034577A - treadmill - Google Patents

Abstract

Provided is a treadmill that realizes maintenance-free with respect to frictional resistance between an endless belt and a supporting floor material. An endless belt wound around a drive roller means (8) and a driven roller means (9) by driving and rotating the drive roller means (8) by a drive mechanism (12) including an electric motor (11). (10) is moved around, and a support floor material (20) for supporting a user's load is provided below the forward movement portion (10a) on the upper side of the belt, and the forward movement portion (10a) is provided as the support floor material. (20) In the treadmill to be rubbed, a lubricant adding mechanism (40) for supplying a lubricant to the sliding portion of the forward movement portion and the support floor material is provided, and a tank (41) for storing the lubricant And a detection means (47) for detecting the overload when the load of the electric motor (11) exceeds the load during constant speed operation, and when the overload is detected, Means (44, 46) for supplying a lubricant to the rubbing portion are configured. [Selection] Figure 3

Description

The present invention relates to a treadmill that realizes maintenance-free with respect to frictional resistance between an endless belt and a supporting floor material .

Conventionally, a treadmill is known as a health device for running and walking indoors. A driving roller means and a driven roller means are arranged in the front-rear direction of a pair of left and right support frames installed on the floor, and both An endless belt is wound between the roller means, and the driving roller means is driven and rotated by a driving mechanism, so that the forward movement portion on the upper side of the endless belt is rotated so as to move backward from the driving roller means to the driven roller means. The user who has moved and boarded the forward movement part is configured to perform a walking exercise or a running exercise.

JP 2003-38679 A JP 2007-159879 A

As described above, the treadmill has an endless belt wound between the driving roller means and the driven roller means. Therefore, in order to make the endless belt move well, a desired tension is applied to the endless belt. It is necessary.

For this reason, in the prior art, the mounting position of the driven roller means can be adjusted in the front-rear direction with respect to the driving roller means that is mounted and fixed at a predetermined position. When the driven roller means is assembled at the production site, In addition, a desired tension is formed on the endless belt while adjusting the mounting position, and the product is shipped after inspection.

However, due to the nature of the treadmill, the endless belt is forced to rotate and drive repeatedly for a long time under the load of the user during walking or running, and repeatedly expands and contracts, so it gradually expands or deteriorates due to fatigue deterioration. There is a problem in that slipping occurs on the roller means by reducing the contraction force and reducing the desired tension.

In this case, structurally, the driven roller means can adjust the mounting position. Therefore, it is possible to form tension on the endless belt anew by removing the exterior parts and adjusting it again. Not only does it require tools, it is too difficult for a general user to perform, and eventually it is forced to be repaired by a professional repairer.

Therefore, it is preferable to provide a treadmill that realizes maintenance-free in this regard. That is, as described above, when the tension of the endless belt decreases, the attachment position of the driven roller means is automatically adjusted while following the decrease of the tension, and the endless belt can be appropriately adjusted without any change. It is preferable to provide a treadmill capable of holding tension.

By the way , the present invention is a treadmill that can reduce frictional resistance generated when the endless belt makes a circular movement, as in an embodiment to be described later, to ensure a smooth circular movement and prevent the belt from being worn. Offering is an issue.

As known in the art, the endless belt wound between the driving roller means and the driven roller means performs walking or running motion while the user is on the upper forward movement portion. It is comprised so that a user's load may be supported by installing a support flooring in the lower side. Accordingly, the forward movement portion moves while rubbing the portion bent downward by the load against the surface of the support flooring.

Therefore, conventionally, a lubricant such as oil is added to the inside of the endless belt and / or the upper surface of the supporting floor material during assembly at the production site. This is because the lubricant reduces the frictional resistance of the sliding movement portion described above, prevents overload of the drive mechanism, and prevents wear of the belt.

However, it is inevitable that the lubricant not only deteriorates due to aging but also disappears for a long period of time, and as a result, the electric motor of the drive mechanism is damaged by the overload, or the belt is worn. There is a problem.

Therefore, the present invention is to provide a treadmill that achieves maintenance-free in this respect and challenge. That is, purpose of the present invention, when the malfunction due to the so-called lubricant out as described above has occurred, which was detected immediately, activated until conditions improve, and configured to automatically add the lubricant The point is to provide a treadmill.

Therefore, the present invention is configured as means, in which an endless belt is wound around driving roller means and driven roller means arranged in parallel with a space in the front and rear, and the driving roller means is driven and rotated by a driving mechanism including an electric motor. By doing so, the upper forward movement part of the endless belt that circulates between both roller means is moved forward and the lower backward movement part is moved backward to support the load of the user who rides on the forward movement part. In a treadmill that moves forward in a state where the forward movement portion is slid against the support floor material by providing the support floor material below the forward movement portion, the friction between the forward movement portion and the support floor material is obtained. A lubricant addition mechanism for supplying a lubricant to the portion is provided, and the lubricant addition mechanism is an overload in which the load of the electric motor exceeds the tank for storing the lubricant and the load at the constant speed operation. When the overload is detected Detection means for, certain lubricant of the tank to a point made is constituted by means for supplying to the rubbing portion when said overload is detected.

In an embodiment of the present invention, the lubricant addition mechanism includes discharge means for dripping the lubricant at a plurality of positions in the width direction on the inner surface of the return portion of the endless belt, and is dropped onto the return portion. The lubricant is spread over the entire width of the inner surface of the endless belt through contact with the roller means, and is supplied toward the rubbing portion through movement of the endless belt .

In a preferred embodiment, the lubricant addition mechanism detects a motor current of an electric motor, and detects the overload current when the motor current rises from a load current during constant speed operation to an overload current. Detecting means; control means for outputting a supply command signal when the overload current is detected; supply means for supplying the tank lubricant by receiving the supply command signal; and supplying the lubricant to the tank Discharging means for discharging toward the rubbing portion is provided .

At this time, the control means repeatedly outputs the supply command signal when the overload current continues to be detected, and outputs a warning signal when the detection signal is not canceled even after repeating the output several times. Is configured to do .

According to the present invention, when a malfunction occurs due to lack of lubrication in the rubbing portion between the endless belt 10 and the support floor material 20, this is immediately detected and automatically lubricated until the operating state is improved. Since the agent can be added, the endless belt is always maintained in a maintenance-free state without damaging the electric motor of the drive mechanism due to overload or causing belt wear. It is possible to provide a treadmill that can move around in a favorable manner .

It is a perspective view showing the treadmill concerning one embodiment of the present invention from the back side. It is a perspective view explaining the folding method of the said treadmill from the back side. It is a perspective view which shows the structural example of the drive mechanism and lubricant addition mechanism in the said treadmill. It is a perspective view which shows the structural example of the tension | tensile_strength addition mechanism provided in the driven roller means in the said treadmill. It is a disassembled perspective view which shows one Example of the said tension addition mechanism. It is sectional drawing which shows the initial setting state with respect to the newly provided endless belt regarding the effect | action of the said tension | tensile_strength addition mechanism. It is sectional drawing which shows the state in which tension | tensile_strength was applied following the expansion | extension of an endless belt regarding the effect | action of the said tension | tensile_strength addition mechanism. It is sectional drawing which shows the deformation | transformation Example of a tension | tensile_strength addition mechanism. It is a block diagram explaining the effect | action of a lubrication agent addition mechanism.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the appearance of a treadmill according to an embodiment of the present invention. With respect to the user's movement posture, the support columns 1, 1, which are positioned at the front and erected in parallel with a predetermined interval in the Y-axis direction, with respect to the X-axis in the front-rear direction and the Y-axis in the horizontal direction orthogonal to each other A driving unit 3 having a housing 2 is disposed between the lower ends of the traveling unit 5, and a traveling unit 5 having a pair of left and right support frames 4, 4 extending from both sides of the housing 2 toward the rear of the X axis. Is configured. In the case of the illustrated example, the support frame 4 is almost entirely covered with a decorative cover 6 and has a decorative cap 7 at the tail end.

Driving roller means 8 and driven roller means 9 extending in the Y-axis direction are arranged at an interval in the X-axis direction of the support frames 4 and 4, and an endless belt 10 is wound around both roller means 8 and 9. It has been. The driving roller means 8 is installed in the vicinity of the front ends of the support frames 4, 4 inside the housing 2, and the driven roller means 9 is installed in the vicinity of the tail ends of the support frames 4, 4. The housing 2 includes a drive mechanism 12 including an electric motor 11, and drives and rotates the drive roller means 8 via a transmission mechanism 13.

As shown in FIG. 3, the drive roller means 8 includes a shaft member 14 having shaft end portions 14 a and 14 a at both ends mounted on the support frames 4 and 4, and a roller member that is rotatably inserted on the shaft member 14. 15, and the shaft end portion 14 a of the shaft member 14 is fixedly supported by the support frame 4 by the support means 16.

The support means 16 and 16 are fixed to the support frames 4 and 4 by welding or the like, and fix the shaft end portions 14a and 14a at predetermined positions. The support means 16 is provided with adjusting means for adjusting the mounting position of the shaft end portion 14a in the X-axis direction, and the shaft end portion 14a is fixed at a predetermined position after adjustment. Therefore, the roller member 15 is rotatably supported on the outer periphery of the shaft member 14 installed and fixed to the support frames 4 and 4.

As shown in FIG. 4, the driven roller means 9 includes a shaft member 17 having shaft end portions 17a and 17a at both ends mounted on the support frames 4 and 4 and a roller member rotatably inserted on the shaft member 17. 18, and the shaft end portion 17 a of the shaft member 17 is supported by the support frame 4 via a tension applying mechanism 19. Accordingly, the roller member 18 is rotatably supported on the outer periphery of the shaft member 17 installed on the support frames 4 and 4.

In the case of the illustrated embodiment, as shown in FIG. 3, the transmission mechanism 13 is configured by spanning a belt between a pulley provided at one end of the roller member 15 of the driving roller means 8 and the output shaft of the electric motor 11. Then, the roller member 15 is driven and rotated as shown by an arrow R in the drawing, and the endless belt 10 is moved between the driving roller means 8 and the driven roller means 9 in a circular manner. The endless belt 10 constitutes an upper forward movement portion 10a and a lower backward movement portion 10b between the winding portions for the roller means 8 and 9, and the forward movement portion 10b is changed from the driving roller means 8 to the driven roller means. The user moves on the forward movement part 10a and moves backward so that the backward movement part 10b moves forward from the driven roller means 9 toward the driving roller means 8, and the user who has boarded the forward movement part 10a performs walking or running motion. Is configured as

In order to support the load of the user who rides on the forward movement part 10a, a support floor 20 is provided below the forward movement part 10a. The support flooring 20 is disposed in a state where both side edges are fixed to the support frames 4 and 4 and / or the decorative covers 6 and 6 and close to the lower surface of the forward movement portion 10a. Therefore, when the user performs a walking or running motion, the forward movement portion 10a moves while rubbing the portion bent downward by the load against the surface of the support floor 20.

As shown in FIG. 1, an upper unit 23 having handrail frames 21, 21 extending toward the traveling unit 5 and control panel means 22 installed on both handrail frames 21, 21 at the upper ends of the columns 1, 1. Is provided. The handrail frame 21 constitutes a grip that the user can hold during exercise, and a pulse detection sensor is provided on the grip. The control panel means 22 includes an operation panel 22a which is fixed to the handrail frames 21 and 21 in a substantially horizontal posture and a display panel 22b which can be raised and lowered from the front edge of the operation panel 22a. The operation panel 22a can start and stop driving the drive mechanism 12, select a drive pattern program, and the like, and display various information on the display panel 22b.

The illustrated treadmill is configured to be foldable as shown in FIG. The control panel means 22 is superposed on the operation panel 22a by rotating the display panel 22b as indicated by the arrow F1, and in this state, the upper unit 23 is connected to the upper ends of the columns 1 and 1 as indicated by the arrow F2. The heads 1 and 1 are superposed on the front surfaces of the support columns 1 and 1 by being turned upside down via the pivot axis. Further, the driving unit 3 and the traveling unit 5 that are integrally configured are overlapped between the columns 1 and 1 by standing up via the pivot at the lower end of the columns 1 and 1 as indicated by an arrow F3. The treadmill has a seat 24 formed at the lower end of the support columns 1 and 1, an installation leg 25 extending rearward from the support columns 1 and 1 in the X-axis direction, and a running leg when used on the floor. The adjustment seat 26 provided near the tail end of the portion 5 is grounded. And when it folds as mentioned above, the drive part 3 and the driving | running | working part 5 are made to stand and rotate in the state which grounded the seat 24 and the installation leg 25. FIG. At this time, a link bar 27 is provided to connect the tail end portion of the installation leg 25 and the support frames 4, 4 or the decorative cover 6, and the drive unit 3 in an upright posture by raising the link bar 27. And the fall of the traveling part 5 is prevented.

(Tension applying mechanism)
The tension applying mechanism 19 for fixing and supporting the shaft end portions 17a and 17a of the shaft member 17 in the driven roller means 9 is disposed in front of the shaft end portion 17a in the X-axis direction as shown in FIGS. A spring receiving member 28, a compression spring 29 comprising a coil spring interposed between the shaft end portion 17a and the spring receiving member 28, and the spring receiving member 28 at a predetermined position where the compression spring 29 is compressed. It is comprised by the fixed position setting means 30 which fixes.

In the case of the illustrated embodiment, a support rail 31 extending in the X-axis direction along the inside of the support frame 4 from the tail end portion of the support frame 4 is fixed by welding or the like, and the tension applying mechanism 19 is provided on the support rail 31. The fixing bracket 32 is provided at the tail end portion of the support rail 31. The fixed bracket 32 is fixed to the support frame 4 and the support rail 31 by welding or the like, and penetrates the shaft support hole 33.

The fixed position setting means 30 is constituted by a bolt means 34 with a head, and is inserted through the bolt means 34 slidably in the diameter direction of the shaft end portion 17a of the shaft member 17 in the driven roller means 9. A hole 35 is formed.

In the case of the embodiment shown in FIGS. 5 to 7, the bolt means 34 has the screw shaft portion 34 b in order with the shaft support hole 33, the insertion hole 35, and the head portion 34 a positioned on the back of the fixing bracket 31. After the coil spring 29 is inserted, the spring receiving member 28 is screwed into the insertion end of the screw shaft portion 34b so as to be able to advance and retract. For this reason, the spring receiving member 28 forms a screw means 36 composed of a female screw. At this time, the spring receiving member 28 is preferably formed of a rectangular plate material that engages with the upper surface of the support rail 31 and the side surface of the support frame 4, and thereby, by engaging the rotary tool with the head 34 a. When the bolt means 34 is rotated, the spring receiving member 28 moves forward and backward in the X-axis direction along the support rail 31 while being restrained so as not to rotate.

When assembling the treadmill at the production site, the driving roller means 8 is mounted at a predetermined position by the support means 16 and 16 with the endless belt 10 wound between the driving roller means 8 and the driven roller means 9 as described above. After the fixing, the driven roller means 9 is installed on the support frames 4 and 4 by the tension applying mechanism 19. As shown in FIG. 6, the screw shaft portion 34 b of the bolt means 34 is inserted into the shaft support hole 33 of the fixed bracket 32, inserted into the insertion hole 35 of the shaft end portion 17 a of the driven roller means 9, and then to the coil spring 29. The screw means 36 of the spring receiving member 28 is screwed into the tip end portion of the screw shaft portion 34b. Such an operation of inserting and screwing the bolt means 34 can be performed with the shaft end portion 17a of the driven roller means 9 temporarily placed on the support rail 31, so that the driven roller means 9 is relatively heavy. Work is facilitated even when constructing an object.

Therefore, when the rotary tool is engaged with the head portion 34a of the bolt means 34 and rotated, the spring receiving member 28 is drawn toward the shaft end portion 17a, and a coil spring is formed between the spring receiving member 28 and the shaft end portion 17a. 29 is compressed, and the elastic resilience is accumulated.

As shown in FIG. 6, the endless belt 10 newly provided at the production site is wound around the drive roller means 8 and the driven roller means 9 in the X-axis direction, as shown in FIG. Is set at a predetermined position P1 in the X-axis direction so as to have a length L1 to which a predetermined tension is applied without causing slack. In this state, the shaft end 17a and the fixed bracket A predetermined interval S is formed between 31.

Accordingly, when the coil spring 29 is completely compressed in the X-axis direction and the length in the axial direction is M1, and the diameter of the shaft end portion 17a is D, as shown by a chain line in FIG. The member 28 is first screwed into the screw shaft portion 34b of the bolt means 34 at the preparation position Q1 (Q1> S + D + M1). Accordingly, at this time, the coil spring 29 is not completely compressed.

From this state, when the rotary tool is engaged with the head 34a of the bolt means 34 and rotated, the spring receiving member 28 is drawn toward the shaft end 17a and moved to the set position Q2 (Q2 = S + R + M1). The coil spring 29 is completely compressed until the length M1 is reached. The driven roller means 9 holds the roller member 18 by the endless belt 10 having a predetermined length L1 that does not sag, so that the shaft end portion 17a is moved to the predetermined position P1 during the operation of pulling and moving the spring receiving member 28. The coil spring 29 is compressed in this state.

When the spring receiving member 28 is moved to the set position Q2, the coil spring 29 cannot be further compressed, so that the operation force necessary for the rotation of the rotary tool is suddenly increased. Therefore, if the operator stops the rotation of the bolt means 34 by sensing the operating force, the spring receiving member 28 is set to be in a fixed state at an intended setting position Q2.

In other words, if the bolt means 34 continues to rotate even after the coil spring 29 is completely compressed, the shaft member 17 of the driven roller means 9 is further pushed by the movement of the spring receiving member 28, and excessive force is applied to the endless belt 10. Although there is a problem that tension is generated, the spring receiving member 28 is stopped and fixed at the set position Q2 as described above, so that the shaft member 17 of the driven roller means 9 has a spring of the coil spring 29. Only the urging force acts, and the tension of the endless belt 10 is made appropriate.

In this set state, since the coil spring 29 is completely compressed, the shaft end portion 17a cannot move forward in the X-axis direction. Therefore, the driven roller means 9 does not move in the direction of loosening the endless belt 10 by an external force during the conveyance of the treadmill, and the endless belt 10 is not displaced in the width direction.

After the treadmill is shipped with the tension applying mechanism 19 set as described above, the treadmill is repeatedly used for walking or running by being used by the user. At this time, even when the endless belt 10 gradually expands or the contraction force is reduced due to fatigue deterioration or the like and the cause of the slack is generated, the shaft end portion 17a is elastically urged by the coil spring 29, and the endless belt 10 is always applied to the endless belt 10. Since the driven roller means 9 is urged so as to apply tension, before the tension of the endless belt 10 decreases, the coil spring 29 has a length M2 (M2> M1) as shown in FIG. As shown, the shaft end 17a is pushed from the predetermined position P1 toward the adjustment position P2. As a result, the endless belt 10 is elastically urged so that the length wound around the driving roller means 8 and the driven roller means 9 becomes an adjustment length L2 without slack, and continues to maintain an appropriate tension.

(Variation implementation profit)
FIG. 8 shows a modified embodiment of the screw means 36 in the tension applying mechanism 19. The bolt means 34 installed between the fixing bracket 31 and the spring receiving member 28 has a head portion 34 a on the front surface of the spring receiving member 28. The screw shaft portion 34b is inserted into the through hole of the spring receiving member 28 in the state where the screw shaft portion 34 is disposed, and the screw means 36 is formed at the tip end portion of the screw shaft portion 34b inserted from the shaft support hole 33 of the fixing bracket 31. A nut 37 is screwed. Other configurations are the same as those of the embodiment described above with reference to FIGS.

According to this modified embodiment, by rotating the nut 37 with a rotary tool, it is possible to draw the spring receiving member 28 together with the bolt means 34 and compress the coil spring 29, based on FIG. 5 to FIG. The operation is the same as in the above-described embodiment. Therefore, in the case of this modified embodiment, the spring receiving member 28 can be formed integrally with the head portion 34a of the bolt means 34.

(Lubricant addition mechanism)
In the present invention, the treadmill is provided with a lubricant addition mechanism 40 as shown in FIGS. When the treadmill is assembled at the production site, a lubricant such as oil is added to the inside of the endless belt 10 and / or the upper surface of the support floor material 20, thereby the forward movement of the endless belt 10 on which the user rides. Although the frictional resistance of the sliding movement part between the part 10a and the support flooring 20 is reduced, the lubricant added at the production site deteriorates due to secular change and disappears by long-term operation, A so-called lubrication failure occurs. Therefore, the lubricant addition mechanism 39 is configured to detect immediately when such a lubrication failure occurs and to automatically add the lubricant.

The lubricant addition mechanism 40 includes a tank 41 that stores a lubricant such as silicon oil, a detection unit 42 that detects the load of the electric motor 11, a control unit 43 that operates in response to a detection signal from the detection unit 42, A supply means 44 for supplying the lubricant of the tank 41 by being driven and controlled by the control means 43 and a discharge means 46 for discharging the lubricant supplied from the supply means 44 through the supply path 45. Yes. In the case of the illustrated embodiment, the tank 41, the detection means 42, the control means 43, and the supply means 44 are housed in the housing 2, and the discharge means 46 is a predetermined place that requires the addition of a lubricant, preferably an endless. The belt 10 extends in the width direction of the backward moving portion 10b at a position above the backward moving portion 10b.

The electric motor 11 is operated at a constant speed with a load current in a state where a generated torque generated by the motor and a predetermined load torque are balanced, and the endless belt 10 is moved around at a constant speed. At this time, the forward movement part 10a on which the user is boarded moves while sliding on the surface of the support floor 20 with the portion bent downward by the load, but the lubricant is working properly, and excessive friction resistance Unless this occurs, the motor current does not greatly exceed the load current during constant speed operation.

However, if a large frictional resistance is generated in the rubbing portion due to the lack of lubrication, an overload is applied to the electric motor 11, and the motor current generates an overload current that greatly exceeds the load current during constant speed operation .

Therefore, the detection means 42 is constituted by a sensor that detects the motor current of the electric motor 11, and when a rise in the motor current is detected, a detection signal is output and input to the control means 43.

As shown in FIG. 9, whether or not the increased motor current MC is the above-described overload current is detected by configuring the detection means 42 with a sensor as described above and using the sensitivity setting means 47a of the sensor. Alternatively, it may be configured to detect the detection signal input from the detection means 42 by making a determination against the threshold value by the determination means 47b of the control means 43. Such sensitivity setting means The detecting means 47 for detecting that the motor current has increased to the overload current can be configured by 47a and the judging means 47b .

Therefore, when an overload current is detected, the control unit 43 outputs a supply command signal SG to the supply unit 44. The supply unit 44 includes, for example, a pump that sucks and discharges the lubricant in the tank 41, and an on-off valve such as a solenoid valve provided between the discharge port of the pump and the supply path 45, and is always open and closed. Although the valve is closed, the lubricant is supplied to the supply passage 45 by opening the on-off valve when the supply command signal SG of the control means 43 is received. At this time, it is preferable that the supply command signal SG of the control unit 43 includes a command of the amount and / or supply time of the lubricant supplied by the supply unit 44.

The lubricant supplied from the supply means 44 is fed to the discharge means 46 through the supply path 45, and from the opening of a nozzle or an orifice provided on the lower side of the discharge means 46, the lubricant of the return portion 10 b of the endless belt 10. It is dropped toward the inner side surface (the upper surface in the figure). At this time, it is preferable that the lubricant is dropped at a plurality of locations at predetermined intervals in the width direction of the backward moving portion 10b.

In this way, according to the configuration in which the lubricant is dropped onto the backward moving portion 10b, the endless belt 10 onto which the lubricant has been dropped moves around between the driving roller means 8 and the driven roller means 9, so that each roller means By receiving the contact of 8 and 9, the endless belt 10 is stretched so as to reach the entire inner surface.

As a result, the lubricant is supplied to the sliding portion of the forward movement portion 10a and the support floor 20 through the movement of the endless belt 10, and when the lack of lubrication is eliminated, the overload of the electric motor 11 is also eliminated. Return to normal operation.

As described above, since the load of the electric motor 11 is constantly monitored by the detection unit 42, for example, the overload is not eliminated by the first supply of the lubricant, and the detection unit 47 subsequently detects the overload current. Is continuously detected until the supply command signal is output again by the control means 43 and the overload of the electric motor 11 is eliminated. Then, even after repeated several operations, when the overload persists, outputs a warning signal from the control means 43, based on the warning signal, and displays a warning message on the display panel 22b, the electric motor 11 It is preferable to configure so as to stop.

According to the above-described lubricant addition mechanism 40, when a malfunction occurs due to lack of lubrication in the rubbing portion between the endless belt 10 and the support floor material 20, it is detected immediately and automatically until the operating state is improved. In addition, since the lubricant is added, the electric motor 11 is not damaged by the overload, and the endless belt 10 is not worn.

DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Housing 3 Drive part 4 Support frame 5 Traveling part 8 Drive roller means 9 Driven roller means 10 Endless belt 10a Forward part 10b Return part 11 Electric motor 12 Drive mechanism 14 Shaft member 14a Shaft end 15 Roller member 16 Support Means 17 Shaft member 17a Shaft end 18 Roller member 19 Tension applying mechanism 20 Support floor material 28 Spring receiving member 29 Compression spring 30 Fixing position setting means 31 Support rail 32 Fixing bracket 33 Shaft support hole 34 Bolt means 34a Head 34b Screw shaft Part 35 Insertion hole 36 Screw means 40 Lubricant addition mechanism 41 Tank 42 Detection means 43 Control means 44 Supply means 45 Supply path 46 Discharge means 47 Detection means 47a Sensitivity setting means 47b Determination means

Claims (4)

An endless belt (10) is wound around a drive roller means (8) and a driven roller means (9) arranged in parallel with a space in the front and rear, and the drive roller means is driven by a drive mechanism (12) including an electric motor (11). Driving and rotating the upper movement part (10a) of the endless belt that circulates between the two roller means, and the lower movement part (10b) is moved backward to move the forward movement part. In the state where the forward movement portion (10a) is slid on the support floor material (20) by providing a support floor material (20) for supporting the load of the user who rides on the lower side of the forward movement portion. In the treadmill that moves forward, a lubricant addition mechanism (40) that supplies a lubricant to the sliding portion of the forward movement portion and the supporting floor material is provided,
The lubricant addition mechanism (40) detects the overload when the load of the tank (41) for storing the lubricant and the load of the electric motor (11) exceeds the load during constant speed operation. A treadmill comprising: a detecting means (47); and means (44, 46) for supplying a lubricant of the tank to the rubbing portion when the overload is detected. The lubricant addition mechanism (40) includes discharge means (46) for dropping the lubricant at a plurality of positions in the width direction on the inner surface of the return part (10b) of the endless belt,
The lubricant dropped on the backward movement portion (10b) is spread over the entire width of the inner side surface of the endless belt (10) through contact with the roller means (8, 9), and the endless belt (10) The treadmill according to claim 1, wherein the treadmill is configured to be supplied toward the rubbing portion through movement. The lubricant addition mechanism (40) includes detection means (42) for detecting a motor current (MC) of the electric motor (11), and the motor current (MC) is from a load current during constant speed operation to an overload current. A detection means (47) for detecting the overload current when it rises, a control means (43) for outputting a supply command signal (SG) when the overload current is detected, and the supply command signal (SG). It is characterized by comprising supply means (44) for supplying the lubricant of the tank (41) by receiving and discharge means (46) for discharging the supplied lubricant toward the rubbing portion. The treadmill according to claim 1 or 2. The control means (43) repeats the output of the supply command signal (SG) when the overload current continues to be detected, and warns if the detection signal is not canceled even after repeating the output several times. The treadmill according to claim 3, wherein the treadmill is configured to output a signal.

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