TW200944258A - Treadmill with endless belt tension adjusting device - Google Patents

Abstract

A treadmill comprises a frame having a base (12), a transmission device having a front roller and a rear roller (21) connected between two sides of said base (12), an endless belt (22) driven over said front and rear rollers, and an adjusting device for adjusting the tension of the endless belt (22) that includes two identical units (32) respectively connected to the two sides of the base (12), each unit (32) comprising a movable member (31) which is a substantially C-shaped member and has a passage defined therethrough, a threaded rod (37) connected to said passage, and an adjusting nut (35) rotatably mounted to a distal end of said threaded rod (37) extending beyond said movable member (31). A shaft of the rear roller (21) is connected to the two movable members (31) of the adjusting device so that, by operating the two adjusting nuts (35), the two movable members (31) are moved in the horizontal direction so as to adjust the distance between the front and rear rollers and the tension of the endless belt (22) without using electric power and with a simple and compact mechanism.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walker having an endless belt tension adjusting device, and more particularly to a walker having a device for manually adjusting the tension of an endless belt. [Prior Art] Conventional walking machines generally include means for adjusting the tension of the endless belt by controlling the distance between the two rollers driven by the endless belt on the upper side. This is often achieved by moving a rear roller having a shaft with a projecting threaded end section, wherein each end section engages a respective threaded rod member which in turn is driven by a motor The worm gear reduction device is engaged. When the endless belt is slack, the user can activate the motor to drive the worm gear reduction device and the threaded rod that rotates under horizontal movement, while the threaded end section of the rear roller shaft moves to adjust between the two rollers the distance. Although effective, such an adjustment device involves two motors and two worm gear reduction mechanisms, both of which are costly. Moreover, these components, in combination with the threaded rod and the threaded end sections of the roller shaft, constitute a relatively bulky device that takes up valuable space. In addition, the 'electrical adjustment device obviously indicates that electric power must be used, so it cannot be applied to a non-electric walking machine, that is, the endless belt is driven on two rollers by the push of the user while walking on the belt. Step machine. SUMMARY OF THE INVENTION -f- 200944258 An object of the present invention is to provide a walker having an endless belt tension adjusting device that overcomes the above disadvantages. This is achieved by a walking machine in which the distance between the two rollers can be manually adjusted and the adjustment device contains a small and simple mechanism. The present invention relates to a walker comprising a frame having a base, the front and rear rollers being coupled between the two sides of the base, and the endless belt being driven by the front and rear rollers. The adjustment device comprises two identical units that are respectively connected to the two sides of the base. Each unit has a movable member that is a substantially or substantially C-shaped member and includes a passage therethrough, a threaded rod coupled to the passage, and an adjustment nut rotatably mounted to the distal end of the threaded rod. The shaft of the rear roller is connected to the two movable members of the adjusting device so that the two movable members can be moved in the horizontal direction by operating the two adjusting nuts to adjust the distance between the front and rear rollers and the endless The tension of the belt. The invention will be more apparent from the following description of the preferred embodiments of the preferred embodiments of the invention. [Embodiment] Referring to Figures 1 to 3, the walking machine of the present invention comprises a frame 10 having a rectangular base 12 and two struts 11, wherein the struts 11 extend from the base 12 to be coupled to the handle and the control panel. The transmission 20 is coupled between the two sides of the base 12 and includes a motor (not shown), a front roller 210, and a rear roller 21. The front roller 210 200944258 is coupled to the front end portion of the base 12 between the two side portions of the base 12, and the rear roller 21 is coupled to the rear end portion of the base 12 between the two side portions of the base 12. The endless belt 22 is driven by the motor via the front and rear rollers 210,21. The adjustment device 30 is coupled to the rear end portion of the base 12 and includes two identical units 32 that are respectively coupled to the two sides of the base 12. Each unit 32 has a movable member 31 which is a substantially or substantially C-shaped member and is movably received in the two casings 33, respectively, and the two casings 33 are respectively It is fixed to the two inner sides of the two side portions of the base 12. Each of the movable members 31 defines a passage through which a stepped shoulder is passed, and the threaded rod member 37 extends through the passage of each movable member 31 and has a head that is stopped by the stepped shoulder. The distal end of the threaded rod member 37 extends beyond the sides of the movable member 31 and the casing 33, and the adjustment nut 35 is rotatably mounted to the distal end portion of the threaded rod member 37. Each movable member 31 defines a feedthrough slot that communicates with an opening 322 defined by the top of the movable member 31. The groove has an inner end portion 321 and the shaft of the rear roller 21 enters the groove through the opening 322 and is displaced to the inner end portion 321 of the contact groove, as shown in Figs. Each movable member 31 has a tick mark 36 defined on its top surface, and each cover 33 has a window 34 defined at its top such that the tick mark 36 of the movable member 31 is positioned to correspond to the window 3 4. As shown in Fig. 5, when the adjustment nut 35 is rotated, the threaded rod member 37 moves together with the movable member 31 due to the engagement of the head portion of the threaded rod member 37 with the stepped shoulder portion in the passage. The user can check the scale mark 3 6 via window 34 200944258 to confirm the distance of the two movable members 3 1 . Therefore, the tension of the endless belt 22 can be easily and accurately adjusted under the use of electric power. While the above-described embodiments of the present invention have been shown and described herein, it will be apparent to those skilled in the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; A perspective view of an endless belt tension pacifier of the present invention is shown. Fig. 2 is a partially exploded perspective view showing the details of the end belt tension adjusting device. Fig. 3 is a partially cutaway perspective view showing the shaft of the rear roller engaged with the groove of the endless belt tension adjusting device. Figure 4 is a partial view showing the shaft of the rear roller engaged with the groove of the movable unit via an opening defined in the movable portion. Figure 5 is a view similar to Figure 4, showing how the rear roller is displaced by the adjustment screw of the belt force adjustment device. Figure 6 is a view showing the two sides of the base of the endless belt tension adjustment loader of the present invention. Partial perspective top view. [Explanation of main component symbols] 10: The frame is shifted by the same one, but the specific application is applied. The whole device is shown in the top section of the moving member showing no moving unit. The longitudinal section is connected to the endless view of the rotating endless connection. 200944258 ❹: Pillar: Base z Transmission: Rear roller: Endless belt: Adjustment device: Movable member: Unit = hood: window: adjustment nut = tick mark: threaded rod 〇: front roller 1: inner end ❿ 322: opening

Claims (1)

200944258 X. Patent application scope 1. A walking machine comprising a frame (10) having a base (12), a front roller (210) connected between two sides of the base (12) and a rear roller a transmission (20) of the sub (21), an endless belt (22) driven on the front and rear rollers (210, 21), and an adjustment device for adjusting the tension of the endless belt (22), Characterized in that the tension adjusting device comprises two identical units (32) respectively connected to the two sides of the base (12), each unit (32) comprising a member that is substantially C-shaped and defined with a through-through a movable member (31) of the passage, a threaded rod member (37) coupled to the passage, and an adjustment of a distal end portion of the threaded rod member (37) rotatably mounted beyond the movable member (31) A nut (35), the shaft of the rear roller (21) is coupled to the two movable members (31) of the adjustment device. 2. The walker of claim 1, wherein each movable member (31) defines a feedthrough groove defined to pass over the top of the movable member (31) The opening (322) is in communication, the groove has an inner end portion (321), and the shaft of the rear roller (21) enters the groove through the opening (322) and is displaced to contact the groove The inner end portion (321) of the groove. 3. The walker of claim 1 or 2, wherein each of the movable members (31) has a scale mark (36) defined on a top surface thereof. 4. The walking machine according to claim 1 or 2, wherein two casings (33) are respectively connected to the two sides of the base (12) -to-200944258' and Two movable members (31) are movably received in the two casings (33), respectively. 5. The walking machine of claim 3, wherein two casings (33) are respectively connected to the two sides of the base (丨2), and the two movable members ( 31) are respectively movably received in the two casings (33). 6. The walker of claim 5, wherein each of the 0 casings (33) has a window (34) defined at a top thereof and received in each casing (33) The scale mark (36) of the movable member (31) is positioned to correspond to the window (34). 7. The walking machine of claim 1 or 2, wherein the passage defined to pass through each movable member (31) comprises a stepped shoulder, and the threaded rod (37) comprises The stepped shoulder stops the head. 8. The walking machine of claim 3, wherein the passage defined to penetrate the movable member (31) comprises a stepped shoulder, and the threaded rod (37) comprises the stepped shape The head of the shoulder stop. 9. The walker of claim 4, wherein the passage defined to pass through each of the movable members (31) comprises a stepped shoulder, and the threaded rod (37) comprises the stepped shoulder The head of the stop. 10) The walker of claim 5, wherein the passage defined to pass through each movable member (31) comprises a stepped shoulder, and the threaded rod (37) comprises the stepped shoulder The head of the stop. 11. The walking machine described in claim 6 of the patent scope, wherein the boundary is -v\ - 200944258 Each of the movable members (31) is fixed to be passed by g 1 2 . The endless belt (22) is driven by a motor. 1 3. If the first end of the patent application range (22) is in front of and move. 1 4. If the first end of the patent application range (22) is in front of and move. 1 5. If the first end of the patent application range (22) is in front of and move. 1 6. If the first end of the patent application range (22) is in front of and move. The passage includes a stepped shoulder and a stepped shoulder stop head. The walking machine according to item 1 or item 2, wherein the walking machine of the preceding and following rollers (210, 21) has three steps, wherein the no-roller (2 1 0, 2 1 ) The walker described in the fourth aspect of the present invention, wherein the no-tweezers (2 1 0, 2 1 ) are driven by the motor drive 6 of the walker, wherein the t-roller (2 1 0, 2 1) The walker described in the seventh item of the motor drive, wherein the roller (210, 21) is driven by a motor -V)-