An elliptical machine for fitness

Abstract

The present invention discloses an elliptical machine for fitness, comprising a main frame, a track, an adjustment assembly, and two sliding link assemblies symmetrically arranged on both sides of the main frame, wherein the main frame at least comprises a base frame, the track comprises a first end and a second end, the first end of the track is pivotally connected to the base frame, the sliding link assembly comprises a rolling element supported on the track and sliding along the track; the adjustment assembly is a length-adjustable assembly, the length-adjustable assembly is coupled and arranged between the second end adjacent to the track and the base frame of the main frame, and the three constitute a triangular structure to adjust and fix the inclination angle of the track relative to the base frame. Through the above structure, the present invention can conveniently adjust the inclination angle of the track, thereby adjusting the height of the pedals to adapt to users of different heights, and has stronger adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of fitness equipment, and in particular to an elliptical machine for fitness. Background Art

[0002] The elliptical machine, also known as the space walker, is a device used for cardiopulmonary exercise. The main structure of the elliptical machine in the existing technology is that a flywheel and other components are arranged in the base frame to connect pedals located on both sides of the base frame. The user drives the flywheel to rotate by stepping on the two pedals, thereby achieving the effect of exercising the hands, waist and legs at the same time.

[0003] However, the pedal inclination angle of traditional elliptical machines is fixed, and users cannot adjust the pedal inclination angle according to their height. The pedals may be too high or too low, resulting in improper exercise and muscle damage, which reduces the user's experience. Or part of the elliptical machine's method of adjusting the pedal inclination angle is relatively cumbersome and complicated. For example, the Chinese invention patent number is "CN201720848328.8", and the patent name is "A pedal slope adjustment mechanism", which discloses a base frame and a guide rail frame rotatably connected to the base frame; it also includes a lifting assembly connected between the base frame and the guide rail frame; the lifting assembly includes a lifting motor and a rotating connecting member movably connected to the base frame, the other end of the lifting motor is movably connected to the rotating connecting member through a telescopic rod, and the rotating connecting member is also provided with a rolling wheel group; the guide rail frame is provided with a guide rail support, and the guide rail support is pressed on the rolling wheel group by its own weight to make the rolling wheel roll along the guide rail support; this application uses the telescopic rod of the lifting motor to extend and retract so that the rolling wheel group directly applies force to the guide rail frame, thereby achieving the purpose of adjusting the pedal slope. The application has a complex structure and requires a separate lifting motor. In addition, the user needs to adjust the telescopic rod of the lifting motor, and the position of the telescopic rod is relatively hidden, which makes the operation very inconvenient and the adjustment process time-consuming and labor-intensive. Summary of the Invention

[0004] Therefore, the present invention provides an elliptical machine for fitness, which is used to solve the technical problem that the inclination angle of the pedal cannot be adjusted or is inconvenient to adjust.

[0005] The present invention is implemented by the following technical solutions:

[0006] The present invention proposes an elliptical machine for fitness, including a main frame, a track, an adjustment component and two sliding link assemblies symmetrically arranged on both sides of the main frame, the main frame at least including a base frame, the track including a first end and a second end, the first end of the track being pivotally connected to the base frame, the sliding link assembly including a rolling member supported on the track and sliding along the track; the adjustment component is a length-adjustable component, the length-adjustable component being coupled and arranged between the second end adjacent to the track and the base frame of the main frame, the three forming a triangular structure to adjust and fix the inclination angle of the track relative to the base frame.

[0007] Among them, in order to facilitate the adjustment of the length-adjustable component, the length-adjustable component is specifically a telescopic sleeve rod component with adjustable and fixed length, having a fixed end and a movable end, the fixed end is pivotally connected to the base frame, and the movable end is also pivotally connected to the track.

[0008] Among them, based on the considerations of installation convenience and assembly optimization, the length-adjustable component includes an outer sleeve that slides onto each other, a sliding rod, and an adjustable positioning component for limiting the position of the sliding rod on the outer sleeve. The outer end of the outer sleeve serves as the fixed end, and the outer end of the sliding rod serves as the movable end.

[0009] Among them, in order to facilitate the operation of the sliding rod, the adjustable positioning component includes: a plurality of gear card holes arranged along the length direction of the outer sleeve, a card block arranged at the inner end of the sliding rod, and an operating component for driving the card block to move. The operating component drives the card block to move, so that the card block is inserted into one of the gear card holes to limit the position or the card block is removed from the gear card hole to adjust the length.

[0010] Among them, based on the consideration of the stability of the connection between the card block and the gear card hole, the multiple gear card holes are symmetrically arranged on the two side walls of the outer sleeve, and there are two card blocks, which are symmetrically arranged on both sides of the inner end of the sliding rod. The two card blocks are driven to move by the operating component, so that the two card blocks are simultaneously inserted into one of the gear card holes arranged on the two side walls of the outer sleeve or the two card blocks are disengaged from the gear card holes.

[0011] wherein, based on the considerations of installation convenience and assembly optimization, the two blocking blocks include a first protrusion, a second protrusion and an abutment portion arranged in sequence from the inside to the outside, the first protrusion being used to engage with the gear card hole, and the second protrusion including an abutment surface being used to abut against the inner end of the slide rod, and the operating component including a pushing block, the pushing block being provided with two inclined pushing surfaces which respectively act on the abutment portions of the two blocking blocks, and the inclined pushing surfaces are driven to move so as to slide obliquely along the inclined pushing surfaces with the abutment portions of the two blocking blocks respectively, thereby driving the first protrusions of the two blocking blocks away from or approaching, thereby realizing the engagement in the gear card hole or disengagement from the gear card hole; and including an elastic reset component which applies force to the two blocking blocks for reverse reset.

[0012] Among them, in order to ensure that the movement of the card block is smoother and more stable, grooves are opened on the two side walls of the inner end of the sliding rod, and the bottom surface of the groove is for the abutment surface of the second protrusion to abut. The two card blocks are provided with a hinge shaft at the position on the other side of the second protrusion, and a pin shaft passes through the hinge shaft and the sliding rod so that the card blocks can rotate relative to each other.

[0013] In order to ensure that the sliding rod has a limiting effect on the second protrusion, the width of the groove is consistent with the thickness of the second protrusion, and the thickness of the hinge shaft is consistent with the thickness of the sliding rod to limit the block.

[0014] Among them, in order to simplify the adjustment action and facilitate the adjustment, the operating component also includes an operating end, the operating end is connected to an elastic member, the pushing block is connected to the operating end through a connecting rod, and the operating end is exposed at the outer end of the sliding rod. The pushing block is driven to move by operating the operating end, and the elastic member applies force to the connecting rod to perform reverse reset.

[0015] In consideration of user convenience, an operating handle is further connected to the outer end of the slide rod, and a through hole is provided on the operating handle for the operating end to extend out.

[0016] After adopting the above scheme, the present invention has the following beneficial effects: the first end of the track of the present invention is pivotally connected to the base frame, the adjustment component is a length-adjustable component, and is coupled and arranged between the second end adjacent to the track and the base frame of the main frame. The three form a triangular structure. When the user does not adjust the pedal height, the triangular structure can stably support the track during normal use, and the user's movement is more stable and safe. When the user adjusts the pedal height, it is only necessary to adjust the adjustment component to adjust the track inclination angle and adjust the pedal height. The operation process is convenient and simple.

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a partially exploded perspective view of an embodiment;

[0019] Figure 2 Shown is a schematic diagram of the structure of an embodiment from one angle Figure 1 ;

[0020] Figure 3 Shown is a structural diagram of another angle of the embodiment Figure 2 ;

[0021] Figure 4 Shown is a schematic structural diagram of the adjustment assembly of the embodiment;

[0022] Figure 5 Shown Figure 4 A cross-section view from one angle Figure 1 ;

[0023] Figure 6 Shown is an exploded schematic diagram of an adjustment assembly of an embodiment;

[0024] Figure 7 Shown is a cross-sectional view from another angle of the embodiment Figure 2 ;

[0025] Figure 8 Shown is a schematic structural diagram of a card block according to an embodiment.

[0026] Description of labels:

[0027] Main frame 1, bottom frame 11, mounting slot 111, vertical frame 12, flywheel 13;

[0028] Track 2, first end 21, second end 22;

[0029] Adjustment component 3, fixed end 301, movable end 302, sliding support sleeve 303, outer sleeve 31, gear locking hole 311, sliding rod 32, groove 321;

[0030] Sliding link assembly 4, first movable rod 41, pedal 421, second movable rod 42, rolling element 411, crank 43, handle 431;

[0031] Adjustable positioning assembly 5, blocking block 51, first protrusion 511, second protrusion 512, abutting surface 5121, abutting portion 513, elastic reset member 514, hinge shaft 515, operating assembly 52, pushing block 521, inclined pushing surface 5211, operating end 522, elastic member 5221, connecting rod 5222, operating handle 523. DETAILED DESCRIPTION

[0032] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the present disclosure and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, one of ordinary skill in the art will understand other possible embodiments and the advantages of the present invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0033] At the same time, the directions such as front, back, left, and right involved in this embodiment are only used as a reference for directions and do not represent directions in actual use.

[0034] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0035] This embodiment provides an elliptical machine for fitness, see Figures 1 to 8 As shown, the fitness elliptical machine includes a main frame 1, a track 2, an adjustment assembly 3 and two sliding link assemblies 4 symmetrically arranged on both sides of the main frame 1. Among them, the main frame 1 includes a base frame 11, a vertical frame 12 and a flywheel 13. The flywheel 13 is installed on one side of the base frame 11, the vertical frame 12 is arranged on the top side of the flywheel 13, and the track 2 is arranged on the other side of the base frame 11. The two sliding link assemblies 4 include a first movable rod 41, a second movable rod 42 and a crank 43. The first movable rod 41 and the second movable rod 42 are cross-arranged and fixedly connected at the cross connection. A pedal 421 is installed at one end of the first movable rod 41, and the other end of the first movable rod 41 is connected to one end of the crank 43. The other end of the crank 43 is fixedly installed on the vertical frame 12. The crank 43 is fixedly installed on one end of the vertical frame 12 and extends outward to form a handle 431 that can be grasped by a person. One end of the second movable rod 42 is connected to the handle 431. The flywheel 13 is connected, and the other end of the second movable rod 42 is connected to a rolling member 411. The rolling member 411 slides along the track 2. In this way, when the user uses it, the handle 431 is swung back and forth by the user's hand, and the foot steps on the pedal 421 to make a forward and backward movement. The first movable rod 41 drives the flywheel 13 to rotate, which is then transmitted to the second movable rod 42 to drive the rolling member 411 to slide on the track 2. The above is the operation process of the fitness elliptical machine, and the user can achieve the effect of exercising the hands, waist and legs at the same time. In this embodiment, the direction of the elliptical machine in the state of being fixed on the ground is described as the direction, that is, the side of the base frame 11 is the bottom side, and the side facing the stand 12 is the top side.

[0036] See Figures 1 to 3As shown, the track 2 includes a first end 21 and a second end 22. The first end 21 of the track 2 is pivotally connected to the base frame 11. Specifically, the base frame 11 is provided with a hinge slot, and the track 2 is connected to the hinge slot via a hinge axis, allowing this end of the track 2 to rotate about the hinge axis. The adjustment assembly 3 is a length-adjustable assembly. The adjustment assembly is coupled and disposed between the second end 22 of the adjacent track 2 and the base frame 11 of the main frame 1. The three components form a triangular structure to adjust and fix the inclination angle of the track 2 relative to the base frame 11. In this embodiment, a mounting slot 111 is provided on the base frame 11, and the adjustment assembly 3 is hingedly mounted in this mounting slot 11, limiting the rotation range of the adjustment assembly 3 to between 0° and 90°. This rotation of the adjustment assembly 3, combined with the positional relationship between the track 2 and the adjustment assembly 3, allows the track 2 to have a wider range of adjustable inclination angles, i.e., a wider range of pedal height differences, and greater adaptability. Of course, in other embodiments, the adjustment assembly 3 can also be fixed to the base frame 11 at a certain inclination angle, which is not a limitation herein.

[0037] Among them, the track 2 is arranged in two parallel ways to allow the rolling elements 411 of the two sliding link assemblies 4 to slide, and the adjustment assembly 3 is located in the middle of the two tracks 2 and is hinged to the two tracks 2 respectively. Therefore, the adjustment assembly 3 is located at a position adjacent to the second end 22 of the track 2; in other embodiments, the track 2 can be a plate-like structure, and guide rails are provided on both sides of the plate-like structure for support of the rolling elements 411, so that the adjustment assembly 3 can only be arranged at the end of the second end 22 of the track 2, but in this embodiment, the track is arranged in two parallel and symmetrical ways, so that the triangular structure formed by the adjustment assembly, the track 2 and the base frame 11 is more compact, and a smaller force can be applied to drive the inclination angle of the two tracks 2 relative to the base frame 11 to be adjusted and fixed, and the structure is more stable.

[0038] See Figures 4 to 6 As shown, the adjustment assembly 3 is a length-adjustable assembly, specifically a telescopic sleeve assembly with adjustable and fixed length, having a fixed end 301 and a movable end 302. The fixed end 301 is pivotally connected to the base frame 11, and the movable end 302 is also pivotally connected to the track 2. This structure is used in the present application to facilitate adjustment of the adjustment assembly 3. Specifically, the length-adjustable assembly includes an outer sleeve 31 that slides onto each other, a slide rod 32, and an adjustable positioning assembly 5 for limiting the position of the slide rod 32 on the outer sleeve 31. The outer end of the outer sleeve 31 serves as the fixed end 301, and the outer end of the slide rod 32 serves as the movable end 302. A sliding support sleeve 303 is fixedly provided at the inner end of the outer sleeve 31, and the slide rod 32 slides into the sliding support sleeve 303. The sliding support sleeve 303 can be made of plastic or other materials, or a buffer part is provided on the slide rod 32 to reduce the friction between the sliding support sleeve 303 and the slide rod 32, so that the sliding action of the slide rod 32 is smoother.

[0039] Continue reading Figure 6 As shown, the adjustable positioning assembly 5 includes: a plurality of gear-positioning holes 311 arranged along the length of the outer sleeve 31, a clamping block 51 disposed at the inner end of the slide bar 32, and an operating assembly 52 for actuating the clamping block 51. The operating assembly 52 actuates the clamping block 51, causing the clamping block 51 to engage with one of the gear-positioning holes 311 to define its position or to disengage from the gear-positioning hole 311 to adjust its length. Therefore, to adjust the inclination angle of the track 2, the user only needs to operate the operating assembly 52, which is convenient and convenient for the user. To ensure that the clamping block 51 is stably engaged with one of the gear-positioning holes 311, multiple gear-positioning holes 311 are symmetrically provided on both side walls of the outer sleeve 31. The number of gear-positioning holes 311 can be adjusted based on the actual size of the elliptical trainer. In this embodiment, there are four gear-positioning holes 311, which are evenly spaced. There are two clamping blocks 51, which are symmetrically arranged on both sides of the inner end of the slide rod 32. The two clamping blocks 51 are driven to move by the operating component 52, so that the two clamping blocks 51 are simultaneously clamped into one of the gear clamping holes 311 set on the two side walls of the outer sleeve 31 or the two clamping blocks 51 are disengaged from the gear clamping holes 311.

[0040] See Figures 7 and 8As shown, the two clamping blocks 51 include a first protrusion 511, a second protrusion 512, an abutting portion 513 and an elastic return member 514 which are sequentially arranged from the inside to the outside. The first protrusion 511 is used to engage with the gear clamping hole 311, and the second protrusion 512 includes an abutting surface 5121 for abutting against the inner end of the slide rod 32. The operating assembly 52 includes a pushing block 521, which is provided with two inclined pushing surfaces 5211 that respectively act on the abutting portions 513 of the two clamping blocks 51. By driving the pushing block 521 to move, the inclined pushing surfaces 5211 respectively slide along the inclined pushing surfaces 5211 with the abutting portions 513 of the two clamping blocks 51, thereby driving the first protrusions 511 of the two clamping blocks 51 to move away from or approach, thereby achieving the engagement of the gear clamping hole 311 or the disengagement of the gear clamping hole 311; the elastic return member 514 applies force to the two clamping blocks 51 to perform reverse reset. In this embodiment, grooves 321 are defined on both side walls of the inner end of the slide bar 32. The bottom surfaces of the grooves 321 serve as abutment surfaces 5121 of the second protrusion 512. The two clamping blocks 51 are provided with hinge shafts 515 on the other side of the second protrusion 512. A pin passes through the hinge shafts 515 and the slide bar 32, enabling relative rotation of the clamping blocks 51. To ensure that the slide bar 32 retains the second protrusion 512, the width of the grooves 321 matches the thickness of the second protrusion 512, and the thickness of the hinge shafts 515 matches the thickness of the slide bar 32, thereby limiting the clamping blocks 51. In this way, the clamping block 51 uses the hinge shaft 515 as a fulcrum, so that the first protrusions 511 and the abutting portions 513 on both sides of the clamping block 51 move in opposite directions. By driving the pushing block 521 to drive the abutting portions 513 to move, the first protrusions 511 are thereby driven to move, causing the first protrusions 511 to engage with or disengage from the gear engaging holes 311. Furthermore, in this embodiment, when the first protrusions 511 are engaged with the gear engaging holes 311, the surface of the first protrusions 511 abutting against the gear engaging holes 311 is parallel to the abutting surface 5121 of the second protrusions 512. In this way, the direction of the force applied by the pushing block 521 is perpendicular to the first protrusions 511, maximizing the effect of the force of the pushing block 521 on the clamping block 51.

[0041] In this embodiment, participants Figure 7As shown, the elastic reset member 514 can be an elastic member such as a reset spring or a tension spring. The two inclined push surfaces 5211 of the push block 521 are inclined outward from the inside to the outside. The first protrusion 511, the second protrusion 512, and the abutment portion 513 are gradually narrowed. By driving the push block 521 to move inward, the push block 521 abuts against the abutment portions 513 of the two card blocks 51, driving the abutment portions 513 of the two card blocks 51 to move away from each other along the inclined push surfaces 5211, thereby The first protrusion 511 disengages from the gear locking hole 311, and the elastic return member 514 contracts; by driving the pushing block 521 to move outward, the pushing block 521 does not abut against the abutting portions 513 of the two locking blocks 51, and the first protrusions 511 of the two locking blocks 51 return under the action of the elastic return member 514, move away from each other, and are locked in one of the gear locking holes 311, so that the operation of the pushing block 521 is realized to control whether the locking block 51 is locked with the gear locking hole 311. The two locking blocks 51 are locked in place by the two locking portions 513, and the locking portions 513 of the two locking blocks 51 are locked.

[0042] In this embodiment, the first state (initial state) of the adjustment assembly is described as follows: the push block 521 does not abut the abutting portion 513 of the clamping block 51, and the clamping block 51 is clamped in the gear clamping hole 311. The second state of the injection mold is described as follows: the push block 521 is driven forward, abuts the abutting portion 513 of the clamping block 51, and the clamping block 51 is disengaged from the gear clamping hole 311. In other applications, the first and second states of the clamping block 51 and the gear clamping hole 311 may be interchangeable.

[0043] In order to facilitate the operation of the push block 521, refer to Figure 6As shown, the operating assembly 52 also includes an operating end 522, which is connected to an elastic member 5221. The push block 521 is connected to the operating end 522 via a connecting rod 5222. The operating end 522 is exposed at the outer end of the slide bar 32. By operating the operating end 522, the push block 521 is driven to move, and the elastic member 5221 applies force to the connecting rod 5222 to reset the block in the opposite direction. For example, in this embodiment, the operating end 522 is a button. By pressing the button, the push block 521 moves inward, causing the locking block 51 to disengage from the gear locking hole 311, and the elastic member 5221 retracts. When the button is released, the elastic member 5221 returns to its original position due to the elastic restoring force, and drives the push block 521 to move outward, causing the locking block 51 to engage with the gear locking hole 311. Or in other embodiments, the operating end 522 may be a pull ring, etc., which can be pulled to drive the push block 521 to move outward, so that the card block 51 is disengaged from the gear card hole 311, and the elastic member 5221 retracts; when the pull ring is released, the elastic member 5221 recovers under the action of the elastic restoring force, and drives the push block 521 to move outward, so that the card block 51 is engaged in the gear card hole 311. This article does not impose any restrictions.

[0044] Furthermore, in order to facilitate the user's grasp and to better operate the operating component 52, an operating handle 523 is connected to the outer end of the slide rod 32, and a through hole is provided on the operating handle 523 for the operating end 522 to extend out. In this way, the user grasps the operating handle 523 with the palm of his hand, and the thumb can conveniently operate the operating end 522. The palm and the remaining four fingers grasp the operating handle, which can also conveniently pull or push the operating end 522. Only one hand is needed to complete the adjustment of the track inclination angle, that is, the pedal height, which is very convenient.

[0045] The specific process of adjusting the track inclination angle of the fitness elliptical machine is as follows:

[0046] When the inclination angle of the track 2 needs to be adjusted, the user grasps the operating handle 523 and presses the button with his thumb, driving the pushing block 521 to move inward, so that the abutting portions 513 of the two clamping blocks 51 move away from each other along the inclined pushing surface 5211 of the pushing block 521, driving the first protrusions 511 of the two clamping blocks 51 to move closer to each other, and the elastic reset member 514 retracts, so that the first protrusion 511 of the clamping block 51 disengages from the gear clamping hole 311; then pushes the slide bar 32 to make the slide bar 32 slide relative to the outer sleeve 31, thereby driving the track 2 The tilt angle of the track 2 changes. According to the user's own situation, the position relationship between the slide bar 32 and the outer sleeve 31 is adjusted so that the outer sleeve 31 is aligned with the gear engaging hole 311 in the appropriate position. The button is released, driving the push block 521 to move outward. The push block 521 does not abut against the abutment portion 513. Under the elastic restoring force of the elastic return member 514, the first protrusions 511 of the two engaging blocks 51 are engaged with the gear engaging hole 311, thereby adjusting the tilt angle of the track 2, that is, adjusting the height of the pedal 421. The above operation process is simple and can be completed by the user with only one hand, making it convenient for the user to adjust the pedal height according to their own situation.

[0047] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it should be understood by those skilled in the art that various changes in form and details made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims fall within the scope of protection of the present invention.

Claims

1. An elliptical machine for fitness, comprising a main frame, a track, an adjustment assembly, and two sliding link assemblies symmetrically arranged on both sides of the main frame, characterized in that: The main frame includes at least a base frame, the track includes a first end and a second end, the first end of the track is pivotally connected to the base frame, the sliding link assembly includes a rolling element supported by the track and sliding along the track; the adjustment assembly is a length-adjustable assembly, the length-adjustable assembly is coupled and disposed between the second end adjacent to the track and the base frame of the main frame, the three forming a triangular structure to adjust and fix the inclination angle of the track relative to the base frame; The length-adjustable component is specifically a length-adjustable and fixed telescopic sleeve rod component having a fixed end and a movable end, wherein the fixed end is pivotally connected to the base frame, and the movable end is also pivotally connected to the track; The length-adjustable assembly includes an outer sleeve and a slide rod that slide onto each other, and an adjustable positioning assembly for limiting the position of the slide rod on the outer sleeve, wherein the outer end of the outer sleeve serves as the fixed end, and the outer end of the slide rod serves as the movable end; The adjustable positioning assembly includes: a plurality of gear-position locking holes arranged along the length direction of the outer sleeve, a clamping block provided at the inner end of the slide rod, and an operating assembly for driving the clamping block to move, wherein the operating assembly drives the clamping block to move, so that the clamping block is clamped into one of the gear-position locking holes to define the position or is removed from the gear-position locking hole to adjust the length; The plurality of gear-position locking holes are symmetrically arranged on both side walls of the outer sleeve, and the number of the locking blocks is two, which are symmetrically arranged on both sides of the inner end of the slide rod. The two locking blocks are driven to move by the operating component so that the two locking blocks are simultaneously engaged in one of the gear-position locking holes arranged on the two side walls of the outer sleeve or are disengaged from the gear-position locking holes. The two card blocks include a first protrusion, a second protrusion and an abutment portion which are arranged in sequence from the inside to the outside, the first protrusion being used to engage with the gear card hole, and the second protrusion including an abutment surface for abutting against the inner end of the slide rod, and the operating assembly including a pushing block, the pushing block being provided with two inclined pushing surfaces which respectively act on the abutment portions of the two card blocks, and the pushing block being driven to move so that the inclined pushing surfaces respectively slide obliquely with the abutment portions of the two card blocks along the inclined pushing surfaces, thereby driving the first protrusions of the two card blocks away from or closer to each other, thereby achieving engagement in the gear card hole or disengagement from the gear card hole; and including an elastic reset component, the elastic reset component applying force to the two card blocks for reverse reset.

2. The elliptical machine for fitness according to claim 1, characterized in that: Grooves are provided on the two side walls of the inner end of the sliding rod, and the bottom surface of the groove is for the abutment surface of the second protrusion to abut. The two blocks are provided with hinge shafts at the position on the other side of the second protrusion, and a pin shaft passes through the hinge shaft and the sliding rod so that the blocks can rotate relative to each other.

3. The elliptical machine for fitness according to claim 2, characterized in that: The width of the groove is consistent with the thickness of the second protrusion, and the thickness of the hinge shaft is consistent with the thickness of the slide bar, so as to limit the blocking block.

4. The fitness elliptical machine according to claim 1, characterized in that: The operating component also includes an operating end, which is connected to an elastic member. The pushing block is connected to the operating end through a connecting rod. The operating end is exposed at the outer end of the sliding rod. The pushing block is driven to move by operating the operating end, and the elastic member applies force to the connecting rod to perform reverse reset.

5. The fitness elliptical machine according to claim 4, characterized in that: The outer end of the slide rod is further connected to an operating handle, and the operating handle is provided with a through hole for the operating end to extend out.

Images