Constant tension mechanism for a training device

Abstract

Constant tension mechanism for a training device, comprising a base (10) arranged on the body of the training device; an elastic element (20) supported on the base (10); and a tension wheel unit (30) comprising a movable element (31) movably connected to the base (10) and on which the elastic element (20) is supported, and at least one tension wheel (32) rotatably arranged on the movable element (31) and serving to tension a belt (2) of the device body, wherein the direction of the force of the elastic element (20) on the movable element (31) and the direction of movement of the at least one tension wheel (32) relative to the base (10) are the same.

Description

Technical field

[0001] The invention relates to a constant voltage mechanism, in particular a constant voltage mechanism for a training device. State of the art

[0002] Exercise bikes are usually driven by a belt drive. This consists of a drive wheel, which can be turned by the pedals, a resistance wheel, and a belt that connects the drive wheel and the resistance wheel. The belt is kept under tension so that the drive wheel can effectively rotate the resistance wheel. However, the belt ages easily due to long-term tension, which can cause the drive wheel or the resistance wheel to slip, resulting in ineffective power transmission and poor durability.

[0003] Therefore, it is necessary to provide a new and progressive constant tension mechanism for training equipment in order to solve the problems mentioned above. Object of the invention

[0004] The invention is based on the objective of creating a constant tension mechanism for training equipment that can keep the belt of the training equipment in a tensioned state.

[0005] This problem is solved by the inventive constant tension mechanism for training equipment, comprising a base arranged on the body of the training equipment; an elastic element supported on the base; and a tension wheel unit comprising a movable element movably connected to the base and on which the elastic element is supported, and at least one tension wheel rotatably arranged on the movable element and serving to tension the belt of the equipment body; wherein the direction of the force of the elastic element on the movable element and the direction of movement of the at least one tension wheel relative to the base are the same. List of characters Fig. 1 a perspective view of the preferred embodiment of the invention, Fig. 2 an exploded view of the preferred embodiment of the invention, Fig. 3 an exploded view of the constant voltage mechanism of the preferred embodiment of the invention, Fig. 4 a sectional view of the constant tension mechanism of the preferred embodiment of the invention, Fig. 5 a representation of the state of use of the preferred embodiment of the invention, Fig. 6 an enlarged representation according to Fig. 5. Ways to implement the invention

[0006] The following embodiments serve only to illustrate the present invention and should not, however, limit the scope of protection of the present invention.

[0007] Fig. 1 to Fig. Figure 6 shows a preferred embodiment of the invention. The constant tension mechanism 1 for training equipment according to the invention comprises a base 10, an elastic element 20 and a tension wheel unit 30.

[0008] The base 10 is arranged on the body of the training device. The elastic element 20 is supported on the base 10. The tension wheel unit 30 includes a movable element 31, which is movably connected to the base 10 and on which the elastic element 20 is supported, and at least one tension wheel 32, which is rotatably arranged on the movable element 31 and serves to tension the belt 2 of the device body. The direction of the force exerted by the elastic element 20 on the movable element 31 and the direction of movement of the at least one tension wheel 32 are the same relative to the base 10. This allows the tension wheel 32 to tension the belt 2 via the elastic element 20, so that the belt 2 can be held in a tensioned state and the force transmission effect is effective.

[0009] The movable element 31 comprises a rod 311, which movably extends through the base 10, and a support 312, which is connected to the rod 311. The at least one tension wheel 32 is rotatably mounted on the support 312. The elastic element 20 is supported on the support 312. The support 312 has two opposing side plates 313. The at least one tension wheel 32 is rotatably mounted between the two side plates 313. The two side plates 313 project radially from the circumferential surface of the at least one tension wheel 32. As in Fig. As shown in Figure 4, the belt 2 can be confined between the two side plates 313 to prevent slippage. Preferably, the tensioning wheel unit 30 includes two tensioning wheels 32, which are coaxial and spaced apart. A gap 321 is provided between the two tensioning wheels 32, into which an anti-slip rib 200 of the belt 2 can engage, thus further preventing the belt 2 from slipping laterally and ensuring good confinement. At least one of the two side plates 313 is provided with at least one through-hole 314 for other related components.

[0010] As in Fig. 3 and Fig.As shown in Figure 4, in this embodiment the base 10 has two side walls 11 and a tubular body 12 connected between the two side walls 11. The rod 311 is movably mounted in the tubular body 12. The elastic element 20 is arranged around the rod 311 to prevent tilting of the rod 311, thus ensuring that the direction of movement of the tensioning wheel 32 coincides with the direction of force exerted by the elastic element 20. The tubular body 12 and the rod 311 extend coaxially and linearly. The axial direction of the rod 311 is perpendicular to the axial direction of the at least one tensioning wheel 32. Preferably, the axial direction of the rod 311 and the axial direction of the at least one tensioning wheel 32 overlap. This allows the force of the elastic element 20 to be directly transmitted to the tensioning wheel 32 to effectively press the belt 2, thus improving the tensioning effect.Of course, the pipe body and the rod can also be bent.

[0011] In detail, the elastic element 20 is a helical spring. One end of the helical spring has a reduced diameter and rests against the tube body 12 or a side wall 11. The other end of the helical spring has a reduced diameter and rests against the bracket 312. In this way, the helical spring pushes the bracket 312 away from the tube body 12. The design is simple and easy to assemble. The base 10 also has a main body 13, which is attached to the device body. The side walls 11 are preferably detachably attached to the main body 13 and each has a mounting hole 111. Both ends of the tube body 12 are each provided with an annular step 121, which can rest against the wall of the mounting hole 111, which is advantageous for assembly and provides good stability. The distance between the two side walls 11 can be selected according to the length of the tube body 12, thus allowing for a wide range of applications.In other embodiments, the two side walls can also be firmly attached to the base body. The base can further have a support element on the side of the bracket facing away from the tube body. The rod is provided with a radial projection. The elastic element is elastically clamped between the radial projection and the support element, thereby achieving the same effect.

[0012] In summary, the constant tension mechanism of the invention can be arranged on the body of the training device. The tension wheel can tension the belt of the training device. Since the elastic element constantly presses against the movable element, the tension wheel can maintain stable tension on the belt, thus keeping the belt in a taut state. Therefore, the effect caused by belt loosening is effectively reduced, resulting in good power transmission and durability. Reference symbol list 1 Constant voltage mechanism 10 Base 11 Side wall 111 Mounting hole 12 pipe bodies 121 Ring stage 13 basic shapes 20 elastic element 30 tension wheel unit 31 movable element 311 pole 312 bracket 313 Side panel 314 Through hole 32 tension wheel 321 gap 2 belts 200 anti-slip ribs

Claims

[1] Constant tension mechanism for a training device, comprising a base (10) arranged on the body of the training device; an elastic element (20) supported on the base (10); and a tension wheel unit (30) comprising a movable element (31) movably connected to the base (10) and on which the elastic element (20) is supported, and at least one tension wheel (32) rotatably arranged on the movable element (31) and used to tension the belt (2) of the device body, wherein the direction of the force of the elastic element (20) on the movable element (31) and the direction of movement of the at least one tension wheel (32) relative to the base (10) are the same. [2] Constant voltage mechanism for a training device according to claim 1, characterized by , that the tension wheel unit (30) contains two tension wheels (32) which are designed to be coaxial and spaced apart. [3] Constant voltage mechanism for a training device according to claim 1, characterized by , that the movable element (31) comprises a rod (311) which movably passes through the base (10) and a support (312) which is connected to the rod (311), wherein the at least one tension wheel (32) is rotatably arranged on the support (312), and wherein the elastic element (20) is supported on the support (312). [4] Constant tension mechanism for a training device according to claim 3, characterized by that the holder (312) has two opposing side plates (313), wherein the at least one tension wheel (32) is rotatably arranged between the two side plates (313), the two side plates (313) projecting radially from the circumferential surface of the at least one tension wheel (32). [5] Constant voltage mechanism for a training device according to claim 3, characterized by, that the base (10) has two side walls (11) and a tube body (12) which is connected between the two side walls (11), wherein the rod (311) is movably received in the tube body (12), and wherein the elastic element (20) is arranged around the rod (311). [6] Constant voltage mechanism for a training device according to claim 5, characterized by , that the elastic element (20) is a helical spring, wherein one end of the helical spring has a reduced diameter and rests against the tube body (12) or a side wall (11). [7] Constant voltage mechanism for a training device according to claim 5, characterized by , that the elastic element (20) is a helical spring, wherein the other end of the helical spring has a reduced diameter and rests against the support (312). [8] Constant tension mechanism for a training device according to one of claims 5 to 7, characterized by, that the tube body (12) and the rod (311) extend coaxially and linearly. [9] Constant tension mechanism for a training device according to claim 8, characterized by , that the axial direction of the rod (311) is perpendicular to the axial direction of the at least one tension wheel (32). [10] Constant voltage mechanism for a training device according to claim 9, characterized by , that the axial direction of the rod (311) and the axial direction of the at least one tension wheel (32) overlap. [11] Constant voltage mechanism for a training device according to claim 6, characterized bythat the tension wheel unit (30) comprises two tension wheels (32) which are coaxial and spaced apart, wherein a gap (321) is provided between the two tension wheels (32) into which an anti-slip rib (200) of the belt (2) can engage; that the holder (312) has two opposing side plates (313), wherein the at least one tension wheel (32) is rotatably arranged between the two side plates (313), the two side plates (313) projecting radially from the circumferential surface of the at least one tension wheel (32); that at least one of the two side plates (313) is provided with at least one through-hole (314); that the elastic element (20) is a helical spring, wherein one end of the helical spring has a reduced diameter and rests against the holder (312);that the base (10) further comprises a base body (13) which is arranged on the device body, wherein the side walls (11) are detachably arranged on the base body (13) and each has a mounting hole (111), wherein the two ends of the tube body (12) are each provided with an annular step (121) which can abut the hole wall of the mounting hole (111); that the axial direction of the rod (311) is perpendicular to the axial direction of the at least one tension wheel (32); and that the axial direction of the rod (311) and the axial direction of the at least one tension wheel (32) intersect.

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