Leg-training exerciser

Abstract

An exerciser has a bottom base, a handle assembly, two swinging arms, a balance linkage assembly, a damper, a supporting rod, a seat post, and a seat. The handle assembly is secured on an end of the bottom base. The two swinging arms are pivotally connected with the bottom base. The balance linkage assembly is arranged between the swinging arms to allow the two swinging arms to swing relative to the bottom base in reverse directions respectively. The damper is arranged between the two swinging arms and the bottom base to provide a resistant force to the swinging arms. The supporting rod is mounted on the bottom base at a position away from the handle assembly and protruding inclinedly toward the handle assembly. The seat post is adjustably inserted into the supporting rod. The seat is adjustably mounted on a top of the seat post.

Description

BACKGROUND OF THE INVENTION1. Field of the Invention

[0001] The present invention relates to an exerciser, and more particularly to an exerciser for training strength and power of muscles of legs for sprint.2. Description of Related Art

[0002] Indoor exercisers can solve weather and location issues for exercising and are popular in nowadays. One conventional exerciser for training muscles of legs for sprint, such as US Patent Application Publication 2023 / 0054522. The '522 Publication uses a damping mechanism composed of pulleys and belts to provide a resistance to a user for leg-training. Thus, the muscles of legs of the user can be trained and improved.

[0003] However, the '522 Publication has a complicated structure and are complex in manufacturing and repairing. Therefore, to reduce the cost for manufacturing and using, U.S. Pat. No. 12,220,606 is provided. The '606 Patent has a simplified structure but to reduce the cost for manufacturing.

[0004] To overcome the shortcomings, the present invention tends to provide an exerciser to mitigate or obviate the aforementioned problems.SUMMARY OF THE INVENTION

[0005] The main objective of the invention is to provide a leg-training exerciser that is adjustable in seat to make the exerciser versatile in use.

[0006] The exerciser has a bottom base, a handle assembly, two swinging arms, a balance linkage assembly, a damper, a supporting rod, a seat post, and a seat. The handle assembly is secured on an end of the bottom base for a user holding the handle assembly. The two swinging arms are pivotally connected with the bottom base, and each swinging arm has a pedal mounted on an end of the swinging arm opposite the bottom base. The balance linkage assembly is arranged between the swinging arms to allow the two swinging arms to swing relative to the bottom base in reverse directions respectively. The damper is arranged between the two swinging arms and the bottom base to provide a resistant force to the swinging arms. The supporting rod is mounted on the bottom base at a position away from the handle assembly and protrudes inclinedly toward the handle assembly. The seat post is inserted retractably and adjustably into the supporting rod. The seat mounted is adjustably forward and backward on the top of the seat post.

[0007] Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0008] FIG. 1 is a perspective view of an exerciser in accordance with the present invention;

[0009] FIG. 2 is a side view of the exerciser in FIG. 1;

[0010] FIG. 3 is an enlarged cross sectional side view of the exerciser in FIG. 1;

[0011] FIG. 4 is an operational cross sectional side view of the exerciser in FIG. 1 showing that the seat is adjustable in height;

[0012] FIG. 5 is an enlarged perspective view of the exerciser in FIG. 1;

[0013] FIG. 6 is an operational perspective view of the exerciser in FIG. 1 showing that the seat is adjustable in position;

[0014] FIG. 7 is an operational embodiment side view of the linkage assembly of the exerciser in FIG. 1;

[0015] FIG. 8 is another operational embodiment side view of the linkage assembly of the exerciser in FIG. 1;

[0016] FIG. 9 is a further operational embodiment side view of the linkage assembly of the exerciser in FIG. 1; and

[0017] FIG. 10 is another further operational embodiment side view of the linkage assembly of the exerciser in FIG. 1.DETAILED DESCRIPTION OF PREFERRED EMBODIMENT

[0018] With reference to FIGS. 1 to 7, a leg-training exerciser in accordance with the present invention comprises a bottom base 10, a handle assembly 20, two swinging arms 30, a balance linkage assembly 40, a damper 50, a supporting rod 14, a seat post 60, and a seat 70. The bottom base 10 is applied to put on a ground and comprises a bottom rod 12 and two lateral rods 13. The two lateral rods 13 are mounted respectively on two ends of the bottom rod 12 to make the bottom base 10 form as an I-shaped structure. Accordingly, the bottom base can be stably put on a flat ground. The handle assembly 20 is mounted securely on and end of the bottom base 10 for hands of a user to hold the handle assembly 20. The handle assembly 20 comprises two curved handle bars 22. Each handle bar 22 has a bottom end attached securely on one of the lateral rods 13 of the bottom base 10. A middle portion of each handle bar 22 may be formed as a reversed U shape, such that the top end of the handle bar 22 extends downward. In addition, the bottom base 10 further comprises a handle connection rod 16 being substantially parallel with the bottom rod 12 and having a front end curved upward. The top ends of the two handle bars 22 are connected to a position near the top end of the handle connection rod 16, such that the handle bars 22 can be arranged securely on the bottom base 10. Furthermore, the bottom base may further comprise an inclined rod 17 connected to the handle connection rod 16. Two ends of the inclined rod 17 are attached respectively to a bottom of the handle connection rod 16 and a top of the bottom rod 12.

[0019] The two swinging arms 30 are pivotally connected with the bottom base 10, and each swinging arm 30 has a pedal 32 mounted on an end of the swinging arm 30 opposite the bottom base 10. The supporting rod 14 is mounted on the bottom base 10 at a position away from the handle assembly 20 and protruding inclinedly toward the handle assembly 20. The supporting rod 14 may be a hollow tube. An end of each swinging arm 30 is pivotally connected to the supporting rod 14. An end of the handle connection rod 16 opposite the handle assembly 20 is connected to the supporting rod 14. In addition, a seat 70 is mounted on a top of the supporting rod 14.

[0020] The balance linkage assembly 40 is arranged between the two swinging arms 30 to allow the two swinging arms 30 to swing relative to the bottom base 10 in reverse directions respectively. The balance linkage assembly 40 may have a structure same as same as those in the '522 Publication or the '606 Patent. However, the difference between the balance linkage assembly 40 from that in the '606 Patent is in that the linking rod 43 is a rod having a fixed length and can be made by powder metallurgy or other methods to reduce the cost of manufacturing.

[0021] The damper 50 is arranged between the two swinging arms 30 and the bottom base 10 to provide a resistant force to the two swinging arms 30. The damper 50 may be a chain assembly as shown in the '522 Publication, a gear assembly as shown in the '606 Patent, or two cylinders. The detail structure of the damper 50 is omitted.

[0022] The seat post 60 is inserted retractably into the supporting rod 14. With further reference to FIGS. 3 and 4, a positioning stub 142 is screwed on the supporting rod 14. An end of the positioning stub 142 extends into the supporting rod 14. Multiple positioning holes 62 are defined in a side of the seat post 60 facing the positioning stub 142. The end of the positioning stub 142 extending into the supporting rod 14 is inserted into one of the positioning holes 62 to hold the seat post 60 at a desired height relative to the supporting rod 14.

[0023] The seat 70 is mounted moveably forward and backward on the top of the seat post 60. With further reference to FIGS. 5 and 6, a fixed base 64 is mounted securely on the top of the seat post 60, and a sliding base 72 is mounted securely on a bottom of the seat 70 and is arranged around the fixed base 64. Preferably, the fixed base 64 and the sliding base 72 may be inversed U-shaped structure. Two elongated adjusting holes 722 are defined respectively in two side tabs of the sliding base 72. A quick releasing mechanism 80 is mounted between the sliding base 72 and the fixed base 64 and extends through the adjusting holes 722. When the quick releasing mechanism 80 is locked, the seat can be positioned at a desired position relative to the seat post 60. When the quick releasing mechanism 80 is unlocked, the sliding base 72 can be slid relative to the fixed base 64 to adjust the relative position between the seat 70 and the seat post 60. After the seat 70 is moved to a desired position, the quick releasing mechanism 80 is locked. Thus, the seat 70 is positioned at the desired position relative to the seat post 60.

[0024] Accordingly, with reference to FIGS. 2, 7, and 8, when in use, two feet of a user can step on the pedals 32 on the swinging arms 30 and two hands of the user can hold the handle bars 22 of the handle assembly 20. The body of the user leans slightly forward and lies down. The feet of the user steps the pedals 32 respectively, such that the swinging arms 30 will be pivoted relative to the supporting rod 14 with the stepping of the user. Accordingly, when one of the swinging arms 30 is pivoted downward with the stepping of the user, the other swinging arms 30 can be pivoted with the transmission of the balance linkage assembly 40. Therefore, the two swinging arms 30 can swing relative to the bottom base 10 in reverse directions respectively with the transmission of the balance linkage assembly 40.

[0025] With reference to FIG. 7, when the exercise in accordance with the present invention is in use, the angle and posture of the body of the user can be changed to train different muscles of legs of the user. FIG. 7 shows a posture for simulating the starting position of a race for the user to train the athlete or the muscle strength and explosive power of the user for sprint.

[0026] In addition, with reference to FIG. 8, the user can step the swinging arms 30 in a stand posture, such that the exerciser in accordance with this invention can be used as a general stepping exerciser. Therefore, the exerciser in accordance with the present invention is versatile in use.

[0027] With reference to FIG. 9, the user can sit on the seat 70 on the top of the supporting rod 14, so that the user can step the swinging arms 30 at small angle range. Accordingly, the users with muscle atrophy can rehabilitate their feet with the exerciser in accordance with the present invention. The exerciser in accordance with the present invention is versatile in use.

[0028] With reference to FIG. 10, the seat post 60 can be slid along the supporting rod 14 after the positioning stub 142 is loosened. Thus, the height of the seat post 60 relative to the supporting rod 14 can be adjusted. In addition, the position of the seat 70 relative to the seat post 60 can also be adjusted after unlocking the quick releasing mechanism 80. Accordingly, the user can sit on the seat 70 and can step the swinging arms 30 at larger angle range even straighten two legs alternately. The muscles of the thighs and calf of the user can be trained at the same time to meet the different demands of different users.

[0029] Furthermore, the inclined angle of the supporting rod 14 toward the handle assembly 20 can be enlarged to keep the legs of the user from being interfered with the balance linkage assembly 40 or the damper 50. Therefore, the exerciser can be used smoothly.

[0030] Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.

Claims

1. An exerciser comprising:a bottom base;a handle assembly secured on an end of the bottom base for a user holding the handle assembly;two swinging arms pivotally connected with the bottom base, and each swinging arm having a pedal mounted on an end of the swinging arm opposite the bottom base;a balance linkage assembly arranged between the swinging arms to allow the two swinging arms to swing relative to the bottom base in reverse directions respectively;a damper arranged between the two swinging arms and the bottom base to provide a resistant force to the swinging arms;a supporting rod mounted on the bottom base at a position away from the handle assembly and protruding inclinedly toward the handle assembly;a seat post inserted retractably and adjustably into the supporting rod; anda seat mounted adjustably forward and backward on the top of the seat post.

2. The exerciser as claimed in claim 1, wherein the two swinging arms are pivotally connected to the supporting rod.

3. The exerciser as claimed in claim 2, wherein the bottom base comprises a bottom rod and two lateral rods mounted respectively on two ends of the bottom rod to make the bottom base form as an I-shaped structure.

4. The exerciser as claimed in claim 3, wherein the handle assembly comprises two curved handle bars, each handle bar has a bottom end attached securely on one of the lateral rods of the bottom base, a middle portion of each handle bar is formed as a reversed U shape, and the top end of the handle bar extends downward.

5. The exerciser as claimed in claim 4, wherein the bottom base further comprises a handle connection rod being substantially parallel with the bottom rod and having a front end curved upward, and the top ends of the two handle bars are connected to a position near the top end of the handle connection rod.

6. The exerciser as claimed in claim 5, wherein a positioning stub is screwed on the supporting rod, an end of the positioning stub extends into the supporting rod, multiple positioning holes are defined in a side of the seat post facing the positioning stub, and the end of the positioning stub extending into the supporting rod is inserted into one of the positioning holes.

7. The exerciser as claimed in claim 6, wherein a fixed base is mounted securely on the top of the seat post, a sliding base is mounted securely on a bottom of the seat and is arranged slidably around the fixed base, an elongated adjusting hole is defined in the sliding base, and a quick releasing mechanism is mounted between the sliding base and the fixed base and extends through the adjusting holes.

8. The exerciser as claimed in claim 1, wherein the bottom base comprises a bottom rod and two lateral rods mounted respectively on two ends of the bottom rod to make the bottom base form as an I-shaped structure.

9. The exerciser as claimed in claim 8, wherein the handle assembly comprises two curved handle bars, each handle bar has a bottom end attached securely on one of the lateral rods of the bottom base, a middle portion of each handle bar is formed as a reversed U shape, and the top end of the handle bar extends downward.

10. The exerciser as claimed in claim 9, wherein the bottom base further comprises a handle connection rod being substantially parallel with the bottom rod and having a front end curved upward, and the top ends of the two handle bars are connected to a position near the top end of the handle connection rod.

11. The exerciser as claimed in claim 10, wherein a positioning stub is screwed on the supporting rod, an end of the positioning stub extends into the supporting rod, multiple positioning holes are defined in a side of the seat post facing the positioning stub, and the end of the positioning stub extending into the supporting rod is inserted into one of the positioning holes.

12. The exerciser as claimed in claim 11, wherein a fixed base is mounted securely on the top of the seat post, a sliding base is mounted securely on a bottom of the seat and is arranged slidably around the fixed base, an elongated adjusting hole is defined in the sliding base, and a quick releasing mechanism is mounted between the sliding base and the fixed base and extends through the adjusting holes.

13. The exerciser as claimed in claim 2, wherein a positioning stub is screwed on the supporting rod, an end of the positioning stub extends into the supporting rod, multiple positioning holes are defined in a side of the seat post facing the positioning stub, and the end of the positioning stub extending into the supporting rod is inserted into one of the positioning holes.

14. The exerciser as claimed in claim 13, wherein a fixed base is mounted securely on the top of the seat post, a sliding base is mounted securely on a bottom of the seat and is arranged slidably around the fixed base, an elongated adjusting hole is defined in the sliding base, and a quick releasing mechanism is mounted between the sliding base and the fixed base and extends through the adjusting holes.

15. The exerciser as claimed in claim 1, wherein a positioning stub is screwed on the supporting rod, an end of the positioning stub extends into the supporting rod, multiple positioning holes are defined in a side of the seat post facing the positioning stub, and the end of the positioning stub extending into the supporting rod is inserted into one of the positioning holes.

16. The exerciser as claimed in claim 15, wherein a fixed base is mounted securely on the top of the seat post, a sliding base is mounted securely on a bottom of the seat and is arranged slidably around the fixed base, an elongated adjusting hole is defined in the sliding base, and a quick releasing mechanism is mounted between the sliding base and the fixed base and extends through the adjusting holes.

17. The exerciser as claimed in claim 2, wherein a fixed base is mounted securely on the top of the seat post, a sliding base is mounted securely on a bottom of the seat and is arranged slidably around the fixed base, an elongated adjusting hole is defined in the sliding base, and a quick releasing mechanism is mounted between the sliding base and the fixed base and extends through the adjusting holes.

18. The exerciser as claimed in claim 1, wherein a fixed base is mounted securely on the top of the seat post, a sliding base is mounted securely on a bottom of the seat and is arranged slidably around the fixed base, an elongated adjusting hole is defined in the sliding base, and a quick releasing mechanism is mounted between the sliding base and the fixed base and extends through the adjusting holes.

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